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1
Hioe, Yunior. "Mold thermal design and quasi steady state cycle time analysis in injection molding." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1141840509.
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Vrátný, Martin. "Návrh technologie výroby závitové koncovky z plastu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318751.
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This diploma thesis submits a proposal of technology design manufacturing threaded plastic ends. In the first part it deals with literary studies of plastics and plastic injection molding. In the second part is the design of an injection form for the specified component. Part of the practical part is also the right choice of material and the injection mold, which was designed based on the calculations of technological parameters. In the conclusion of this thesis is technical economic evaluation.
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Nevřivý, Lukáš. "Technologie výroby plastového držáku střešního nosiče." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241702.
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This master’s thesis focuses on a design of injection mold which is used for manufacturing of a plastic holder of roof rack. The first part includes shape analysis of the holder and explains function of the product as well as specify essential requirements which must be met. The choice of the most suitable manufacturing technology is followed by theoretical part which deals with literature review of plastic materials, technology of injection molding and basics of injection mold designing. Practical part includes overall design of the mold for the holder of roof rack based on technological calculations. Practical part is followed by mold flow analysis simulation showing suitability of designed mold along with selection of suitable injection molding machine based on product construction design and technological process of manufacturing. The conclusion of master’s thesis includes an economical evaluation of proposed manufacturing technology.
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Betáš, Martin. "Řešení výroby součásti "Klapka APZ13"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402501.
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This master‘s thesis deals with the solution of the production of the given part "APZ13". The structural analysis of the component is followed by the choice of the available manufacturing technology. The following is a theoretical description of the chosen technology and injection mold. Its solution is practically described in the following chapter and then the creation of TPV documentation of the whole project. The conclusion of this master’s thesis is a technical-economic evaluation of the chosen technology and discussion.
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Ivan, Matin. "Modularni sistem za projektovanje alata za injekciono presovanje plastike." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2014. http://www.cris.uns.ac.rs/record.jsf?recordId=85564&source=NDLTD&language=en.
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U disertaciji se prikazuje modularni sistem za projektovanje alata zainjekciono presovanje plastike. Analizirani su različiti prilazi uprojektovanu alata. Prikazana je koncepcija i funkcionisanjerazvijenog sistema. Verifikacija sistema je izvršena na konkretnimplastičnim proizvodima. Na kraju su dati odgovarajući zaključci imogući pravci budućih istraživanja.The dissertation shows the development of the modular system formold design for plastic injection molding. Different approaches wereanalyzed in the field of mold design. The concept and functioning ofthe developed modular system is presented. Validation of theproposed system is made with the specific plastic parts. At the endthe appropriate conclusions and possible directions for futureresearch are given.
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Mikulenka, Martin. "Technologie výroby plastové pružné spony." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229926.
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Currently, the plastics industry has a wide range of applications due to the possibility of a fully automated process or through increased production efficiencies. The reason for this choice of the thesis was to understand the whole issue of plastic injection molding process. The specified component is used to atach the sail, which serves to protect workers in the welding sector. A specified number of the series is 350 000. The work includes a theoretical problem of injection molding process, selection of technology, material selection and design of mold. An integral part of every design mold is a simulation of injection, which is also included. In conclusion of thesis is the calculation of the various stages of production and operation of the injection mold.
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Masuku, Eric S. "Intelligent CAD mould design for injection moulding." Thesis, University of Bath, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323605.
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Costa, Carlos Alberto. "Product range models in injection mould tool design." Thesis, Loughborough University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327657.
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Wong, Teng. "Slicing of 3D CAD models for mould design /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19670424.
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黃挺 and Teng Wong. "Slicing of 3D CAD models for mould design." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B29875122.
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Buchok, Aaron (Aaron J. ). "The design, manufacturing and use of economically friendly injection molds." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43170.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.Includes bibliographical references (leaf 71).
Much of the polymer manufacturing done today involves the process of injection molding. It can be difficult to gain experience in the art of designing and building tooling for this process outside of industry. The goal of this project is to simplify the process involved in the design of an injection mold to a level suitable for use by motivated undergraduate engineering students. Discussion is centered on the state of the art of mold building. A great deal of attention is also paid to the use of the Battenfeld Plus 250 injection molder and the use of Solidworks MoldTools as tools for the design and use of mold tooling. By following the design, manufacturing, and use of a mold, a great deal of insight into the process and work required to produce the plastic items that we use every day is provided.
by Aaron Buchok.
S.B.
12
Cedorge, Thomas. "Surface roughness and draft angle effects on stereolithography molds." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/18199.
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Šobáň, Jakub. "Technologie výroby plastové součásti pro automobilový průmysl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416435.
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The diploma thesis presents a production technology design of an automotive industry component – a resonator holder. The initial production run of the part is 500 000 pcs. Injection production has been selected based on variant analysis of available technologies. Technological calculations have been performed. The selected material PP 56M10 will be used for operation in granules. A quadruple shaped cavity injection mold with a tunnel gate has been designed. Based on estimated technological properties an Arburg Allrounder 470 A machine has been selected. The break-even point (BEP) shows economic return at the production of 185 595 pcs.
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Fu, Tingrui. "PP/clay nanocomposites : compounding and thin-wall injection moulding." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/24655.
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This research investigates formulation, compounding and thin-wall injection moulding of Polypropylene/clay nanocomposites (PPCNs) prepared using conventional melt-state processes. An independent study on single screw extrusion dynamics using Design of Experiments (DoE) was performed first. Then the optimum formulation of PPCNs and compounding conditions were determined using this strategy. The outcomes from the DoE study were then applied to produce PPCN compounds for the subsequent study of thin-wall injection moulding, for which a novel four-cavity injection moulding system was designed using CAD software and a new moulding tool was constructed based upon this design. Subsequently, the effects of moulding conditions, nanoclay concentration and wall thickness on the injection moulded PPCN parts were investigated. Moreover, simulation of the injection moulding process was carried out to compare the predicted performance with that obtained in practice by measurement of real-time data using an in-cavity pressure sensor. For the selected materials, the optimum formulation is 4 wt% organoclay (DK4), 4 wt% compatibiliser (Polybond 3200, PPgMA) and 1.5 wt% co-intercalant (erucamide), as the maximum interlayer spacing of clay can be achieved in the selected experimental range. Furthermore, DoE investigations determined that a screw speed of 159 rpm and a feed rate of 5.4 kg/h are the optimum compounding conditions for the twin screw extruder used to obtain the highest tensile modulus and yield strength from the PPCN compounds. The optimised formulation of PPCNs and compounding conditions were adopted to manufacture PPCN materials for the study of thin-wall injection moulding. In the selected processing window, tensile modulus and yield strength increase significantly with decreasing injection speed, due to shear-induced orientation effects, exemplified by a significantly increased frozen layer thickness observed by optical microscopy (OM) and Moldflow® simulation. Furthermore, the TEM images indicate a strong orientation of clay particles in the flow direction, so the PPCN test pieces cut parallel to the flow direction have 36.4% higher tensile modulus and 13.6 % higher yield strength than those cut perpendicular to the flow direction, demonstrating the effects of shear induced orientation on the tensile properties of thin-wall injection moulded PPCN parts. In comparison to injection speed, mould temperature has very limited effects in the selected range investigated (25-55 °C), in this study. The changes in moulding conditions show no distinctive effects on PP crystallinity and intercalation behaviour of clay. Impact toughness of thin wall injection moulded PPCN parts is not significantly affected by either the changes in moulding conditions or clay concentration (1-5 %). The SEM images show no clear difference between the fracture surfaces of PPCN samples with different clay concentrations. TEM and XRD results suggest that higher intercalation but lower exfoliation is achieved in PPCN parts with higher clay content. The composites in the thin sections (at the end of flow) have 34 % higher tensile modulus and 11 % higher yield strength than in the thicker sections, although the thin sections show reduced d001 values. This is attributed to the significantly enhanced shear-induced particle/molecular orientation and more highly oriented frozen layer, according to TEM, OM and process simulation results. In terms of the reduced d001 values in the thin sections, it is proposed that the extreme shear conditions in the thin sections stretch the PP chains in the clay galleries to a much higher level, compaction of clay stacks occurs as less interspacing is needed to accommodate the stretched chains, but rapid cooling allows no time for the chains to relax and expand the galleries back. Overall, data obtained from both actual moulding and simulation indicate that injection speed is of utmost importance to the thin-wall injection moulding process, development of microstructure, and thus the resulting properties of the moulded PPCN parts, in the selected experimental ranges of this research.
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Urbahn, John A. (John Arthur). "The design and performance of a twenty barrel hydrogen pellet injector for Alcator C-Mod." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11627.
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Moammer, A. A. "Thermal management of moulds and dies : a contribution to improved design and manufacture of tooling for injection moulding." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6652.
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Thesis (PhD (Industrial Engineering))--University of Stellenbosch, 2011.ENGLISH ABSTRACT: Injection moulding of polymer components is subject to ever increasing demands for improved part quality and production rate. It is widely recognised that the mould cooling strategy employed is crucial to achieving these goals. A brief overview of injection moulding units and different types of injection moulds is given. The modern Additive Manufacturing (AM) technology for processing metal powders such as Direct Metal Laser Sintering (DMLS) and Selective Laser Melting (SLM) offers almost full freedom to the mould designer. Some of these modern manufacturing methods based on metal powders, which are able to produce complex cooling channels are analysed. A drastic change has entered the mould design domain - shifting the paradigm from design for manufacture to manufacture for design. In combination with suitable AM methods the concept of surface cooling moulds can now be efficiently implemented. This study presents a new approach of predicting the minimum cooling time required for the produced part. Different cooling layouts are analysed taking the heat transfer into consideration. The lumped heat capacity method is implemented in this research in order to determine the minimum cooling cycle time required. A new approach was developed to determine the most suitable cooling layout configuration, such as conventional cooling, conformal cooling or surface cooling, required for a moulded part based on its characteristics such as shape complexity, space available for the cooling layout, part quality requirements, production volume, and product life cycle. A mould cooling design process including simulation, reverse engineering and manufacturing of the mould insert was implemented in this study. In order to validate the generic model developed during the course of this research comparative experiments were carried out to determine the difference in performance of injection moulding using conventional or surface cooling methods. The experimental results showed a significant improvement in part quality produced with reduced cycle times using the surface cooling method.
AFRIKAANSE OPSOMMING: ‘Injection Moulding’ van polimeer komponente word al meer gedruk vir verbeterde kwaliteit en vinniger produksie tyd. Dit is orals bekend dat die gietvorm afkoeling strategie ‘n groot rol speel om hierdie twee doelwitte te bereik. Eers word ‘n kort oorslag gegee van ‘Injection Moulding’ eenhede en van verskillende ‘Injection Moulding’ vorms. Die moderne Aditatiewe Vervaardigingstegnologie vir die prosessering van metaal poeiers soos bv. Direkte Metaal Laser Sintering (DMLS) en Selektiewe Laser Smelting (SLM) bied basies volle vryheid ten opsigte van gietvorm ontwerp. Party van die moderne vervaadigings metodes, wat op metaal poeiers gebaseer is, wat komplekse koelings kanale kan produseer word geanaliseer. Die ontwerpers arena het ‘n groot verandering ondergaan deurdat die fokus van ontwerp vir vervaardiging verskuif het na vervaardiging vir ontwerp. In kombinasie met toepaslike aditatiewe vervaardigings metodes kan oppervlak verkoeling nou effektief geïmplementeer word. Hierdie studie bied a nuwe manier om die minimum verkoelings tyd benodig vir ‘n part te voorspel. Verskeie verkoelings uitlegte word geanaliseer waar hitte oordrag in ag geneem word. Die “lumped heat capacity” metode word gebruik om die minimum siklus tyd te bepaal. ‘n Nuwe benadering is ontwikkel om die mees geskikste verkoelings uitleg soos bv. konvensionele verkoeling, konvorme verkoeling of oppervlak verkoeling te bepaal vir ‘n spesifieke part gebaseer op die part se vorm kompleksiteit, spasie beskikbaar vir verkoelings kanale, kwaliteit vereistes en produk lewensiklus. Die volgende is in die studie geïmplementeer: ‘n vorm verkoelings ontwerp proses met simulasie, ‘reverse engineering’ en vervaardiging van die vorm insetsel. Om die generiese model te verifieer gedurende die studie is vergelykende eksperimente uitgevoer om die verskil in prestasie te bepaal tussen die gebruik van konvensionele en oppervlak verkoelings metodes. Die eksperimentele resultate het ‘n beduidende verbetering in part kwaliteit getoon met ‘n verkorte siklus tyd tydens die gebruik van die oppervlag verkoelings metode.
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Adamec, Lukáš. "Návrh technologie výroby plastové páčky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228847.
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The aim of this project is to design the most suitable technology for manufacturing of the set component. The project contains theoretical and practical part. The theoretical part deals with division of polymer material and the description of the technology suitable for production of the set component. The practical part concentrates on the mould design of the set component including calculations and needed technological parameters of injection moulding operation.
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Štrimaitis, Mantas. "Liejimo slegiant formų projektavimo, gamybos technologinio paruošimo ir gamybos problemų analizė ir sprendimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090623_110855-78181.
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Baigiamajame magistro darbe nagrinėjamos liejimo slegiant formų projektavimo, ga-mybos technologinio paruošimo bei gamybos proceso problemos ir aptariami novatoriški jų sprendimo būdai. Apžvelgiami plastinių medžiagų perdirbimo procesai. Analizuojamas tradi-cinis liejimo slegiant formų gamybos procesas ir jo trūkumai. Pateikiami organizaciniai ir te-chniniai tradicinio gamybos proceso tobulinimo būdai, panaudojant naujausią programinę įrangą, įrankius, medžiagas ir stakles. Tiriamojoje dalyje atliekamas ruošinio parinkimo įtakos liejimo formos detalių savikainai modeliavimas. Išanalizavus visas liejimo slegiant formų ga-mybos problemas, pateikiamos baigiamojo darbo išvados ir siūlymai. Darbą sudaro 7 dalys: įvadas, plastikų perdirbimas, tradicinio liejimo slegiant formų gamybos proceso analizė, liejimo slegiant formų gamybos proceso šiuolaikinės tobulinimo kryptys, ruošinio parinkimo įtakos liejimo formos detalių savikainai modeliavimas, išvados ir pasiūlymai, literatūros sąrašas. Darbo apimtis – 73 p. teksto be priedų, 50 iliustr., 14 lent., 21 bibliografinis šaltinis. Atskirai pridedami darbo priedai.In this final master work are investigated plastic injection moulds design, production technological preparation and production problems and discussed innovative solution ways of these problems. Reviewed remake processes of plastic meterials. Analysed tradicional plastic injection mould production process and its weaknesses. Gived organizational and technical tra-dicional production process improvement ways handling the modern software, tools, materials and machines. In investigational part is performed modeling of billet selection influence to cost price of mould parts. After analysis of all the plastic injection moulds production problems gived conclusions and suggestions of this final work. Structure: introduction, remake of plastics, traditional plastic injection moulds production process analysis, modern improvement ways of plastic injection moulds production process, modeling of billet selection influence to cost price of mould parts, conclusions and suggestions, references. Thesis consist of: 73 p. text without appendixes, 50 pictures, 14 tables, 21 bibliographi-cal entries. Appendixes included.
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Lin, Tsung-sheng, and 林宗聖. "Injection Mold Design with Ontology." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/43713629909498579228.
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碩士國立臺灣科技大學
機械工程系
95
Design of injection mold for plastics parts have been developed and investigated for many years. Conventionally, the basic design knowledge is learned from shop floor practice, books and senior engineers. When senior engineers quit or retire, the knowledge and experience can not be fully transferred to the successors. For knowledge sharing and reusing it should establish a complete mold design knowledge management system to collect all the useful mold design knowledge and to assist in solving the defects of injected parts. This research is to develop a professional mold knowledge system based on Ontology. Many empirical cases have been implemental to cooperate with Microsoft Access software as a way to look up the reason that cause defects of plastics products. Thus, the users can search for professional help with this developed database efficiently, share and reuse the professional knowledge to meet the needs of the industry.
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李啟維. "Injection Tool Design for Rubber Shoues Injection Mold." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/wgvxeb.
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碩士逢甲大學
智能化機電系統設計產業碩士專班
107
In the current process of manufacturing vulcanized shoes, the rubber parts are separately made before combing into the shoes body followed by a plurality of steps in the end forming stage then are sent to the heating tank to be shaped at a high temperature and a high pressure, which is complicated and labor-intensive. Therefore, in this paper, it will be discussed how to design a mold that achieves the online output level by first spraying these rubber parts in an injection machine integrally, and allowing them exiting the machine directly after the injection is completed, finally pressurize and heating the outside to wait for the completion of vulcanization. In this mold design, the concept is to shoot by the plastic three-plate mold, and the core is divided into upper and lower molds by the side line splitting, wherein the inclined pin drives the slider to avoid the outer barb portion. The first section is opened when the front head is retracted and the second section will be opened to separate the upper and lower dies. The relevant parameters of the injection machine are calculated to verify the feasibility of the design by Moldflow. The Moldflow mold flow analysis verifies the research results, and shows that the flow balance analysis of the mold design results is based on the calculated parameters. The flow balance of the left and right finished products is equalized and the time difference between the front and rear ends is less than 0.5 second. The exhaust and package analysis is also verified on the front. Although there will be a small part of the toe cap portion but, the exhaust gap will be solved by using the slider gap, and the calculated injection machine parameters will be consistent with the analysis results.
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Lin, Shih-Kai, and 林世凱. "Analysis of mold design and characteristics on ultrasonic-assisted injection mold." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/19011213432384119425.
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碩士國立高雄應用科技大學
模具工程系碩士班
101
This study was to investigate the ultrasonic technology used in assisted injection molding and mold design. Applying the ultrasonic device installed in the mold, the melt was vibrated with ultrasonic, converts kinetic energy into thermal energy to maintain the desired temperature in the melt flow, avoids the higher shear and frozen thickness around the skin layer, to enhance the injection molding filling efficiency and reduce the residual stress inside the injection molded part. In this paper, a flat specimen (75 mm x 47 mm x 1 mm) of ultrasonic-assisted injection mold was to develop and set a 45 mm diameter ultrasonic vibration device in the central of cavity with frequency of 20 kHz to vibrate Polycarbonate (PC) melt. Besides, cavity pressure sensors were located on the front and rear of the vibration region to analyze the melt flow behavior and product quality between ultrasonic assisted injection molding efficiency and injection molding conditions. The results showed that ultrasonic vibrations can effectively reduce the melt pressure loss through the cavity. In this paper, the pressure loss of the flat specimen used ultrasonic assisted injection was lower than conventional injection molding (non-ultrasonic assisted) about 28%, but no significant effect with the power of ultrasonic. Cause of the direct ultrasonic vibrations destroyed the melt flow stress and thermal stress, and therefore in the region showed the uniform distribution of stress. In this case of the flat specimen, the deviation of maximum / minimum stress was about 0.93 MPa for ultrasonic assisted injection molding and the deviation of maximum / minimum stress was about 1.38 MPa for conventional injection molding. By surface roughness measuring, ultrasonic vibration is found to affect the surface roughness during the melt solidification. In this case of the flat specimen, the ultrasonic power is lower than 70%, no significant increase in the surface roughness for ultrasonic assisted injection molding, but the ultrasonic power higher than 70%, the surface roughness can be 10 times higher than conventional injection.
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Chiu, Yu-Ching, and 邱昱晴. "Effect of Mold Design on Mold Surface Heating in Injection Molding." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/30191465086532073753.
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碩士國立成功大學
航空太空工程學系碩博士班
97
Injection molding is an important fabrication process for polymer plastics with the advantages of mass production, fast and low cost. Its applications are quite broad in appliance, electronics, and anformative, etc. In this decade, a lot of commercial products become smaller and lighter. The relevant techniques for high demand on appearance and quality improvement bring the better products to consumers. Thin-walled injection molding is usually molded under high mold temperature and high injection pressure. Methods to raise the mold surface temperature have been investigated by many scholars. The research concentrates on the study of a rapid surface heating system for injection molding. This study explores the effects on mold surface heating efficient by changing the mold structure and design by inserting PTFE. The result shows that the simply open channel on mold surface doesn’t have the effect of increasing heating efficient. The mold design with an inserting PTFE into the bottom of cavity can raise the surface temperature about 33℃and it doesn’t affect the cooling time.
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Li, Guo-Hao, and 李國豪. "Design and Fabrication of Injection Mold Using Gypsum." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/j2kabw.
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碩士國立虎尾科技大學
機械與電腦輔助工程系碩士班
104
This study addresses the potential of gypsum as a candidate for the mold insert for injection mold. The design and fabrication process of the mold insert is implemented, starting with the gypsum powder, mixing the powder with binder, forming and machining the powder block into the mold insert, assembly and validation by injection test. This work provides an alternative mold-making process that can create tools quickly and with minimum labor cost for pilot run during product development. Traditionally the mold made of gypsum only can be applied in low pressure molding process such as casting, vacuum forming, etc. as result of its porosity. However the weak strength of gypsum makes it too brittle to be used in injection mold directly. In an attempt to develop a rapid and feasible method for making the mold insert with better Compressive strength, some processing parameters for gypsum preparation were investigated in this study. The mold insert made of gypsum were mechanically characterized and the influences of binder with different ratios, mechanical compression for the mold insert preparation, and thickness of the mold insert were assessed. The results showed the potential of the mold insert made of gypsum to compete with conventional techniques for improving venting, especially for the injection molding of small quantity of parts; also, it was showed that this technique allows the injection molded parts with adequate mechanical performance in welding line and, therefore, does not need to be restricted to the production of mockups and prototypes.
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Lin, Chia-Wei, and 林佳緯. "Customizable Commercial Moldbase Platform for Injection Mold Design." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/85121467854754293690.
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碩士中原大學
機械工程研究所
105
In recent years, the upgrading of mold technology makes the mold industry more intense competition. Therefore, the high-quality mold design and mold is the target of every manufacturers. Mold base is important components which connected the mold and injection machine. Different designers would design different molds even based on the same product. Most designers rely on the experiences and there is no consistent design methods, resulting in new staff is not easy to get started. Thus, creating a standard mold base design process can guide the designer to complete the mold base design effectively. In order to help designers to quickly select the mold base and design the mold base, this study integrates the CAD software secondary development tools, network technology and database. This study established two common standard mold bases (Futaba and DME) and stored in the database cooperated with the parameter control in Pro / Web. Link, so that users select the mold base (SA, SB, SC, etc.) and automatically to retrieve the selected module parameters from the database. The navigating process in this study allow users to choose and modify parameters, and then through the database access to achieve the purpose of customization database. In order to automatically assembly the mold, this study sets up a datum plane on the mold base, so that the parts (thimble, slider, etc.) would have a corresponding plane to assembly. This can greatly reduce the time of assembly.
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Tseng, Chia-Yi, and 曾嘉儀. "Knowledge-based Automatic Assembly for Injection Mold Design." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/02651300820977665491.
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碩士中原大學
機械工程研究所
104
With the rapid development of technology and the diverse products, users has higher requirements about the product’s appearance and the mechanism. Therefore, there are kinds of mold parts can be chose, and the size of parts need to be changed since some special requires, resulting in hard to manage the different parts. Because the interference between the template and the parts, the designer should design the escape hole, which is a time-consuming work. This study imports the navigating process in CAD software to the standardize process and led the user to complete the design and combines NET Framework and Structured Query Language (SQL) to build up the mold part standard database on webpage. Changing the parameter in database can achieve the goal of customization. There are three kinds of building parts in Pro/ENGINNEER, which are general type, program type and family table type. This study uses the family table type to create the part samples and applies on the parts that have many sizes. The system will create assembly features and cutting surfaces on parts and this surface corresponds to the size of part on family table. The information will be record by charts and maintained in database controlled via Pro/Web.Link. According to the above, not only can effectively manage the parts, but also with the different needs of the production of customized parts database. Finally, based on the features and surface of parts to assembly and cut automatically so that it can ensure consistency of mold design and designers can reduce time on drawing and assembling. By the mold part database in this study and assembly automatically, the click of mouse in design stage can save 92.1% times.
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Li-Chi, Xiao, and 蕭立奇. "Virtual Prototyping System Design for Injection Mold Base." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/83869192156925251056.
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碩士大葉大學
機械工程研究所碩士班
94
Today’s rapidly growing demand of plastic product in market and shortening product life cycle, the integrated design and manufacturing knowledge into computer-aided injection mold design system becomes an emergent tool in industry. How to integrate efficiently the KBS techniques during complete mould design process, from CAD file of moulded part, parting direction and surface, ejection system and other critical component design till mold-base selection, motivates strongly the research in industry and academic field. In respond to needs described above, the strategies for the solution are concerned in three respective topics which are related to the establish of virtual prototyping system for mold-base , for moulded part design, and for injection mold design based on the concept driven by design for manufacturing and for assembly. The proposal presented is aimed at the first research topic “mold-base virtual prototyping management system”. The system is constructed under Solidwork CAD environments, use Solidwork API and VB language for the interface function program to link between system and Acess database. Using knowledge management technique, system is operatong either interactively or automatically, and is designed for functions (1)efficient and optimum selection of mold-base as user input the intended design data, (2) automatic assembly of mold-base and core, (3) efficiently manage the design change by parametric design concept as moulded part size varied , and finally computer simulation for the interference detection of die opening, closing and moulded part ejecting in order for design quality assurance.
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Chen, Chien-chung, and 陳建忠. "Learning Knowledge for Injection Mold Design of Automotive Lamp." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/s7y634.
Full textAbstract:
碩士國立虎尾科技大學
機械與機電工程研究所
95
Abstract The technology was advanced. The new product schedule was challenge the ability of product development. The mold manufacture was important for project schedule. The mold design was most important for mold development. The mold design will make large influence to manufacture time, quality and cost. Furthermore, it will correlate the possibility of the mass production. So, the mold design was the soul of mold. This research was used the software of knowledge engineer of CATIA V5 to set the knowledge sample. It will set by customer’s form or easy command. It was combine the series step command complex operation process to simple and easy understand command. it will Through the character group application. It will become knowledge setting to design. Then use the parameter to build the variable dimension for design control. It was easy for design change and quickly finish. Furthermore build the automatically command of parts to knowledge rule. It will limit the improper command of designer. By using the package software to make a new intelligent program which was auto setting the dimension parameter. Through the new design software, linking the dimension of parts into the EXCEL table of engineer drawing. The drawing will prepare the material directly. It will reduce the fault of manual work. By using the knowledge function of CATIA V5 to develop the humanize command. Let the mold design can be quickly and correctly finished. Parallel extend to machine work. It will be large reduce the schedule time of mold development. It will more easily control the cost and rise up the competition ability.
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Chow, Ming-Ho, and 周明和. "A Study of Cooling Pipe Design of Injection Mold Die." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/04540353561716018647.
Full textAbstract:
碩士國立臺灣科技大學
機械工程系
87
The purpose of this study is used paradigm of the Holonic Manufacturing System to simplify the layout of the cooling pipe design of Injection Mold Die. On base the experience rule, energy equilibration and the shape factor. It is building the relation of the Mold for the layout, supply the structural model and speeding up to finish the flow chart of the optimization and writing program. We can get the optimal cooling time and the layout of cooling pipe design. In this research we are base on the energy equilibration and use the experience rule as the constraint domain to build the optimization model, speed up to finish optimal design and reduce the period of time for the optimization. We aim the difference shape of the product generation the problem that layout the pipe, and refer the vector and mathematics follow to build the characterize shape’s single and database. The first case, we aim the rectangle plate and use the finite difference method to identify the practicability. We follow the shape of product and employ the construct characterize shape to indicate it. Using the equivalent area conception to simplify the irregular shape and layout the cooling pipe. On the other hand, whereat the ㄇ-shape. We use the length’s expand concept to layout the cooling pipe
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Li, Chang-Chou, and 李昌周. "Studies on Concurrent Mold Design System Framework for Injection Molding." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/98633950135771227885.
Full textAbstract:
碩士國立成功大學
製造工程研究所
84
Mold design plays one of the key roles in net shape product and process development. Conventionally, it performed by experienced designer without sufficient communication with product designers, mold manufacturing process planners and mold fabrication engineers. This leads to the high cost, long development time and inconsistent quality of mold design. In resent years, the concept of concurrent engineering has been widely employed to improve product and process development efficiency and quality by resolving all product life cycle issue at the early design stage. However, how concurrent engineering can help in mold development is still a research issue. The objective of this research is to facilitate the rationalization, concurrentization and automation of mold development process and thus improve the efficiency and quality, and reduce the cost of mold development by: (1) developing a systematic and concurrent mold development model, (2) developing a computer-based mold design framework based on the model, that concurrently takes issues of product design, process design and mold fabrication into consideration, and (3) developing knowledge bases to assist concurrent type of mold design. IDEF structural analysis methodology was employed to investigate the characteristics of mold development process. The concepts of concurrent engineering and the technology of system engineering were used to develop the computer-based concurrent mold design framework. In consideration of other molding product and process development activities, databases and knowledge bases for mold design were developed using technologies of data engineering, knowledge engineering, and object-oriented modeling.
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Huang, Ya-Lu, and 黃雅蓼. "The Development of Optimal Design of Gypsum Mold for Injection." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8j2bkm.
Full textAbstract:
碩士國立虎尾科技大學
飛機工程系航空與電子科技碩士班
105
A temporary plastic injection mold made of gypsum material is proposed. The advantage of this molding method includes shorter fabrication process, less material cost, and lower impact to the environment. Traditionally, gypsum mold only can be used for low pressure molding process such as casting. The critical requirement for the gypsum mold used in injection process is the compressive strength of gypsum. The ingredient of hemihydrates/water, the applied load, and vibration frequency are three factors that influence the compressive strength of gypsum molds. In this work, we used Taguchi method to determine the optimal parameters for gypsum mold fabrication. The result of experiments revealed that the optimum combination of parameters was for each gram gypsum adding 0.375 gram water to form the mixture under 3 Kg weight load and 323.1 power watt of the vibration. The error of compressive strength from the Taguchi confirmation experiment was 0.05dB compared with the simulation value. The results show that a plastic part made by the gypsum mold in injection process is produced successfully. The lifetime of the gypsum mold can endure over 100 times of use. This work proves that gypsum material can be used as a rapid tool for small quantity production.
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Jeng, Ying-Tsung, and 鄭穎聰. "Process Analysis and Mold Design for Injection Molded Plastic Lenses." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/25x94e.
Full textAbstract:
碩士國立高雄應用科技大學
模具工程系碩士班
92
For the injection molded plastic optical lenses, the molding conditions and mold design have critical effects on the quality of the molded lenses. This research included three parts：(1) A spherical and aspherical lens analysis was done through the optical software ZEMAX. This analysis was aimed to use the aspherical lens to reduce the spherical lens mass and aberration, (2) CAE software “Moldex 3D”was applied to simulate flow balance and cooling system for several mold designs to obtain the optimum mold design and molding conditions based on Taugchi Method. The experiments were also performed to verify the simulation. The molding conditions contained melt temperature, injection speed, packing pressure, packing time, mold temperature and cooling time. Measurement of warpage and weld line were selected as the quality characteristics. The results showed that mold temperature and packing pressure were the most effective molding condition on warpage. However, melt temperature and injection speed were the most effective on weld line. (3) Residual stresses were investigated in the molded lenses. The experimental data were obtained from the digital photoelasticity. It was shown that higher packing pressure could reduce the residual principal- stress difference. Nevertheless, the higher mold temperature could increase the residual principal-stress difference.
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Wu, Hui-Sian, and 吳慧賢. "Use of NX to Develop a Design Guiding System for Mold Base of Plastic Injection Mold." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/66714143319270382548.
Full textAbstract:
碩士國立臺灣科技大學
機械工程系
103
With the increasingly frequent use of plastic products in a rapidly changing global market, companies face problems such as shorter product life cycles, price competition, and high capital costs. There is therefore a need to accelerate the development of products and standardize the operation and manufacturing processes to enhance industrial competitiveness.In this thesis, we built a web-based database website for standard mold base components in the ASP.NET development platform and used the application programming interface NXOpen provided by Siemens’s 3D CAD/CAM software NX to develop a design guiding system for mold bases of plastic injection molds. This system enables users to select and download the standard mold base files from the web server and automate assembly of mold plates and conduct the following mold base design work in NX: (1) import the mold assembly: defining the mold cavity, and cut out the required mold cavity that is placed in the mold; (2) automate assembly of mold standard parts: automate assembly of all mold base components, automate generation of large numbers of mold standard parts, and assemble the standard parts onto each exclusive mold plate; (3) changing mold design: the mold design change was performed by a user in response to the requirement of mold designs.In this thesis, we develop an internet-based design-change-oriented database system for mold base parts. This system provides an easy-to-operate user interface, allowing the user to select the mold base specifications, calculate the related geometric parameters, and retrieve the required information for every mold base component automatically. The system can also be used to automate the modification and rebuilding of each mold base component. Therefore, all mold base components were imported into the mold base design guiding system to perform the three tasks of import the mold assembly, automate assembly of mold standard parts, and changing the mold design. By using the simple operating interface in the NX system, the user is able to complete the mold base design quickly, thus enhancing the speed of the operational workflow of mold products, and reducing the human negligence and error of the mold design engineer.
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Huang, Jen-Yan, and 黃正元. "Design and Analysis of the Injection Mold of Light Guide Plate." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62719639522509985447.
Full textAbstract:
碩士逢甲大學
材料與製造工程所
98
Liquid crystal display has been widely used in the present lives of people, for example, Mobile phone, Notebook, Monitor and Satellite navigation. Light guide plate in the module plays a very important role, it makes uniform distribution of light and that is an important element affecting the efficiency of light. The producing process of light guide plate is from mechanical design, optical design, CAE mold flow analysis, mold design, Precision Mold (CNC machining, EDM, wire cutting, grinding), Measurement, assembly, injection molding and optical authentication. Development time throughout the light guide plate mold design and mold machining spends the most time. So the mold design and parts have to be standardization. In the past, it was required for 28 days from the mold design to group established but it is just 15 days now. This study can be used to improve this problem and made the development time of the light guide plate to be completed in time. This article is to study the injection molding of LGP (Light Guide Plate) and reduced mold design and process by using ANSYS to analyze the adequacy of the structural rigidity and find out the influence of the slider with different thickness of template and material. Finally, a number of useful conclusions are provided in this article and some recommendations are taken for future research
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CHANG, YU-CHENG, and 張育誠. "Mold Design and Injection Molding Analysis of a Parking Sensor Component." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4a55vz.
Full textAbstract:
碩士國立高雄應用科技大學
模具系碩士在職專班
106
Car industry has grown vigorously for the past decade, leading to the increasing of vehicle numbers and drivers. Therefore, people pay more and more attention on driving safety system than before. High-Tech techniques are combined into active or passive safety equipment. Among them, parking sonar system is an important driving assistant equipment, for offering more comprehensive safety and convenience to car-driving. In fact, parking sonar system with complex design has several components. One of the important components is “Parking sonar sensor head cover”. It’s for fixing the sonar sensor onto bumper steadily and prevention of sensor falling off. Because head cover is installed at the outside of bumper, even after being wind-blown, sunshine-exposure, rain-spread, dust-dirt-grit-attacked, or shocked by high-pressured water gun when washing car, it still has to stay well-structured. As a result, head cover needs to contain precise scale and weatherability. Hence, this thesis focuses on commercializing new designed sensor cover. Firstly, we design and manufacture the sensor cover mold through mold-flow analysis. Secondly, produce sensor cover prototypes by injection molding with composite material of PBT mixing glass fiber, and investigate the key parameters of injection molding, which determine the forming precision and quality of head cover. Finally, analyze the root causes of cover defects when forming, review the countermeasures, and find the optimistic parameters to mass-produce parking sonar sensor head cover. Keywords：Parking sonar, Parking sonar sensor head cover, Injection Molding, PBT, Glass fiber.
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Ma, Shih-Chen, and 馬識承. "Study on Mold Design and Injection Molding of Sealed Can Body." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/b3h8p7.
Full textAbstract:
碩士遠東科技大學
機械工程研究所在職專班
107
With the improvement of human being's living standards and the wide application of plastic related products, the demand for plastic container products has also increased. In order to meet the needs of users, this study try to use the existing one-cavity mold to optimize as a two-cavity mold. Furthermore, it use the mold flow analysis software to verify the feasibility of the mold design before developing a two-cavity mold, and the existing mold structure can be improved with using hot runner to develop the mold. With the way of optimizing the molding injection, we try to find the best molding parameter, and then optimize the mass production to be best. The results of the research in this paper show that the results of the simulation analysis by CAE are quite consistent with the actual injection parameters. For those molds with bigger ratio flow of length and wall thickness, the positioning method of the mold will changed from the mold base positioning to the mold core positioning. It actually improves the appearance of uneven wall thickness caused by the run-out as result of bigger ratio flow of length and wall thickness of the parts. The actual wall thickness of the mold is between 2.1 ~ 2.15mm. The actual optimization of the molding method makes the 2-cavity mold increased 32.7% compared with 1-cavity mold, and it actually improves the molding cycle time greatly. Under the verification of various test methods, the molding injection will make the mass production to be more stable.
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Hsieh, FengChun, and 謝豐存. "Design and Analysis of an Injection Mold for the Plastic Baffle." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/29647294108877974233.
Full textAbstract:
碩士國立高雄應用科技大學
模具工程系
97
This paper is focus on the design and the analysis of the injection mold for the plastic baffle. According to the established process of the improvement in the filling, the packing, the pressure, the injection, the fluidity, and the warping, the product can gain the best molding condition that reduce the production cost and enhance production efficiency which can extend the injection mold usage and increase the product competitiveness. The analysis of this study is expected to achieve "the best mold-design and molding conditions,” the research methods are mainly targeted at products and molds, and the use of the injection molding machine. Using the molding analysis of Computer Aided Engineering (CAE) that start from the molding process, the analysis results, and the initial design conditions and to discuss and seek to resolve problems in the molding improved. This paper stays on the mold-design and the molding simulation analysis. Firstly, the analysis of molding conditions: There are the mold temperature, the melt temperature, the packing pressure, the packing time, the viscosity, the clamp force, and the mold cooling system that set up the best conditions for the analysis of molding. Secondly, the both size of mutual authentication in the product and the mold-design changes and the simulation. Based on the original design for the plastic partition of the injection molding in the post-warping deformation that is to improve the cost structural and the appropriate considerations in the product design and the mold-design changes made and mold flow analysis assessed the feasibility of change again after the injection molding experiments. At the end, the total amount of warping will improve from 0.526 mm to 0.076 mm. The expectation of the deformation’s tolerance is less than 0.1 mm and also increases the product usage’s efficiency twice.
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YEH, YA-TING, and 葉雅婷. "The Conceptual Design for Plastic Injection Mold of Notebook PC Housing." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/62643039320172282313.
Full textAbstract:
碩士聖約翰科技大學
自動化及機電整合研究所
96
This paper is studying to explore the applicability of computer aided engineering (CAE) technology to estimate the design development for plastic injection mold of notebook PC housing. The main points include the neural network, the design of plastic injection mold, the knowledge-based system (KBS) application, and programming a user interface. Using the neural network to group the plastic notebook housing into there types for getting the dimension of the core and mold. The application of the plastic injection mold design is discussed to avoid the interference between the injection mold and molding parts design. To study the application of knowledge-based system technology to the plastic injection mold design. A framework of a computer aided engineering system is proposed in the paper, which can select the appropriate core and mold material and generate the major injection mold design dimension.
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LIN, Lian-Shyang, and 林廉翔. "The applications of Product Data Management in plastic injection molding mold design." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/16303364445513344884.
Full textAbstract:
碩士逢甲大學
機械與電腦輔助工程學系
101
Technology progresses year by year, various industries have different growth patterns. In the information technology industry, from product development to software design, they innovate all the time; while the traditional manufacturing industries which based on the basis of the past, fewer changes in the growth process, in addition to gradually to fully automated production, the effective use of management to improve the production cycle is also a point. As mold industry for example, mold design emphasizes experience heritage, traditional design method has been used a long time. In a status of lesser improve extend, try different methods of the past, find out better modes, and to enhance greater industrial competitiveness . This paper proposed that use product data management system “Teamcenter”, and to build mold parts database, then use classifications to name the parts, the database could be the parts source of designing mold, design and combine the characteristics of product data management, the mold development process can continue to use the product data management system functions, include user control, design data protection and other characteristics of the cloud database. In order to establish the method what is unlike the previous mold design, and apply the functions of management, to enhance development effectiveness and safety. In this paper, the instances of a plastic mold design, the parts files in Teamcenter database as mold parts, and apply a new mold design process. Finally, questionnaires are mold designers for the survey, and verify the feasibility of the design method. Take advantage of the built parts database, without the use of additional mold aided tools of CAD software, and it’s free to add the database part type, to be a more complete database. Set of users and data access rules in Teamcenter, guarantee the correctness of the files; system through the Internet, as a communication platform for personnel, and to accomplish collaborative engineering designs.
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Chen, Thomas, and 陳青森. "Investigation of Cooling Channel Design for Injection Mold with Free-Form Surface." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/42762556677072163673.
Full textAbstract:
碩士國立臺灣科技大學
機械工程系
104
In recent years, evolution of additive lamination technology has become a tendency. Mold industry is also added with 3D laser additive scanning process for application to mold core manufacturing, allowing cooling channel to carry out manufacturing while conforming with the surface, tremendously enhancing the cooling efficiency. In the past the studies of cooling channel optimization mostly took plane samples as the targets for investigation. This study innovatively proposes making free-form surface area of a mold into an equivalent plane area. Employing a concept similar to straight-line section, each curved surface is turned to be an equivalent plane area. At the same time, the paper calculates the length of the bending cooling channel on each mold with curved surface. After that, equivalent plane area concept is brought to the equation of heat balance theory of the cooling water inside the cooling channel of mold and the material injected in the mold under high temperature. The paper also proposes an optimized calculation method that uses the least cooling time to design the layout of cooling channel of the mold with free-form surface. The process of such an optimization calculation method include objective function, constraint, equation of theory, positions of different line segments of cooling channel, diameter of cooling channel, water temperature and flow amount, equivalent plane area and iteration method. The paper also suggests that the layout design of the cooling channel of core mold and cavity mold has different quantity of cooling channels and layout methods, making the upper and lower surface temperatures of the injected material inside the mold to be converged within the set range. Finally, the paper explores two cases of molds with free-form surface. According to the optimized design method of cooling channel of mold with free-form surface developed by the study, analytic calculation is made. The paper also adopts a mold flow analysis tool, Moldflow, to perform simulation and verification, thus effectively finding an optimized cooling channel design before the mold is made.
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Li, Jie-Hong, and 李玠宏. "Combined design of ejector and mold clamping mechanisms for plastic injection machine." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/35900439151730145690.
Full textAbstract:
碩士國立高雄應用科技大學
模具工程系碩士班
102
This study aim to existing plastic injection mold that ejection-clamping mechanism of two-freedom and double-toggle creative design various and feasible ejection-clamping mechanism of one-freedom. This paper recount structural analysis of original ejection-clamping mechanism firstly, and doing kinematic analysis by AutoDesk Inventor mechanism simulation software. The result of kinematic analysis get design condition and requirement of this study that design three ejection-clamping mechanism of much practical, low cost, simple structure and maximum ejection stroke. The first type is (8,10) mechanism that add movable link to attach between toggle link and movable ejector plate of clamping mechanism, and its concept is from four-bar linkage. The second type is (10,13) mechanism that add a (6,7) linkage to attach between toggle link and movable ejector plate of clamping mechanism, and its concept is from Robert’s straight line mechanism. The third type is (10,13) mechanism that add a (6,7) linkage to attach between toggle link and movable ejector plate of clamping mechanism, and its concept is from Hoeken straight line mechanism. This study use triangle geometry analytic method by Mathematica software and vector-loop numerical analysis by Matlab software that determine ejector stroke, and simulate by AutoDesk Inventor mechanism simulation software.
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Chen, Sheng-Hsun, and 陳昇勳. "Study on Mold Design /Analysis of Precision Injection Molding for Micro Electrical Fan." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/03384047263803820668.
Full textAbstract:
碩士龍華科技大學
機械系碩士班
91
Precision injection molding is a branch of MST (Micro System Technology). The size and precision of product is closing to nanometer is an epoch. Precision injection molding is also called micro-injection molding. It is more important to produce in micro-injection molding technology. Actually, the research of micro-injection molding is just beginning on the world. This research is to probe and explore in pratice. Presently, the using software of moldflow is MoldFlow. This research uses the MoldFlow to analysis with different polymers (such as PP、PA、ABS、ABS+PC、POM)、process parameters (gate location、mold temperature、injection temperature、injection pressure、injection time、packing time、packing pressure) for micro electrical fan. In order to obtain optimum result, the applicant introduces Taguchi method and Gray theory to discuss the influence of each parameter in micro-injection molding. Match development it Micro electrical fan mold, From study before income data conduct and actions mold development it basis, And actual operation , do out the finished product, experiment and theories to verify mutually. In experimenting to analyze with Mold Flow and the gray theories analyze inside, PA material for micro electrical fan, has optimum the forming property, mold temperature in proportion to micro-injection molding not need high to glass transition temperature of material.
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Zhong, Ren-Fan, and 鍾仁凡. "Design and Analysis of Halogen Lampshade for Rapid Micro-injection Mold Surface Heating." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/99318669567188989746.
Full textAbstract:
碩士國立高雄應用科技大學
模具工程系碩士班
93
Abstract The objectives of this paper were to investigate the rapid micro-injection mold surface heating with infrared halogen lamps as well as lampshade designs. Taguchi’s method was used to obtain the optimal lampshade design. Four control factors were selected, which were reflector, focus of reflector, layout of lamps and gap size between the lampshade opening and mold surface. Their levels were as follows: Reflector had sphere, hyperboloid or paraboloid; Focus was 40mm, 50mm or 60mm; Layout of lamps had two-rows, one-row or arc-row; gap size was 2mm, 3mm or 4mm. In the analysis, first, the ray tracing for halogen lamp was simulated by CAE software-TracePro and heat-flux on the mold surface were obtained. Then, thermal analysis of the micro-injection mold was done by ANSYS. Finally, temperatures distributions on the mold surface V.S. heating time were obtained. In the experiment, first, three kinds of lampshades were made to heat the micro-injection mold surface , which were sphere-reflector with two rows lamps, sphere-reflector with arc row lamps and “ㄇ” pattern-reflector with one row lamps. Temperatures on the mold surface measured by infrared camera were to verify the accuracy of analysis. Secondly, a spiral mold was made for injection experiment, and flow lengths were measured for observing the effects of heating mold surface. Results showed that analysis results were in agreement with experiments. Also, sphere-reflector had higher heating efficiency than “ㄇ” pattern-reflector, because infrared rays could be easily concentrated by sphere-reflector. And also two-rows lamp layout had higher heating efficiency than arc row, that is, two rows lamps were mostly in the center of the lampshade, infrared rays could be easily concentrated. This paper presented that concentration of infrared ray was of great importance for lampshade designs. Optimum lampshade can be developed from this point, that is, small power lamp might be enough to heat large mold. And also, the heating efficiency of lampshade can be further improved if the reflector can be coated with a layer of high reflectance material and the mold surface plated with a layer of high absorptivity material.
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Chang, Fu-Chieh, and 張富傑. "Kinematic Design of a Toggled Mold-Clamping Mechanism for Vertical Injection Molding Machines." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/q899vr.
Full textAbstract:
碩士國立臺灣科技大學
機械工程系
103
Toggled mold-clamping mechanism is an important element for vertical injection molding machine. Currently adopted directly from the mechanism in the horizontal counterpart. However, in order to make the mass center of gravity near the ground and to fix the lower mold on the frame, the driving motor of the toggled mold-clamping mechanism has to be installed on a moving plate. Such an installation will unfortunately ask the motor to bear the weight itself, which induces high power consumption and increases the maximum demanding motor torque to the machine. Therefore, this thesis aims to figure out a new toggled mold-clamping mechanism design, which is suitable for use in vertical injection molding machines. We first reviewed literatures about the toggle mechanism design and used the available structural synthesis method to find an Watt’s six-bar linkage with different link-type assortment to the existing design. Then, we established a mathematical model to formulate the kinematics and inverse dynamics of the mechanism. Accordingly, three optimal dimensional designs of the mechanism were derived including the 1) minimal maximum motor torque, 2) minimal average input power, and 3) minimum of maximum input torque and mean input power subject to the same total weight, molding speed, clamping force and workspace as the existing commercially-available machines. The design results indicated that: 1) Case 1: Under the optimal mechanism dimension in this case, the maximum motor torque is only about 13% of that in the existing machine. And the motor average power is about 44.9% of that in the existing machine. 2) Case 2: Under the optimal mechanism dimension in this case, the maximum motor torque is only about 19% of that in the existing machine. And the motor average power is about 44.6% of that in the existing machine. 3) Case 3: Under the optimal mechanism dimension in this case, the maximum motor torque is only about 16% of that in the existing machine. And the motor average power is about 44.9% of that in the existing machine.
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Chang, Chien-Hsing, and 張健興. "Study on injection of non-spherical lens of multi-cavity mold and design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/vzxv3n.
Full textAbstract:
碩士國立虎尾科技大學
機械與機電工程研究所
95
The plastic optics lenses are difficult to manufacture in processing plasticity area. And they have homogeneous thickness characteristic shrink phenomenon of warping during formation process. It results in difficult to control the good rate in producing multi caves of optics products. This study focuses on the sixteen caves with one model of the non-sphere optic lens of camera. In the fabrication of plastic optic lens, the parameters of shaping conditions and mold design have major influence in this processing. Consequently, it is divided into two sessions to discuss. First of all, we use the mold flowing analysis software (Moldex 3D) to imitate the different runner geometry forms and design the independent cooling system to control the temperature of mould which is easily to control the shaping quality of model’s caves. The output data and picture are used as the basis of mold design. Secondly, the temperature of mold and plastic is controlled separately during the practical process of shooting experiment to clarify the effect of cold mold wall to the residue stress. From the experiment results , raising the temperature of mold will reduce the residue stress. In the writing transformation section, we used the mould and final product are measured by non-sphere rough instrument and the results shown that the condition of transformable writing is quite well.
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Huang, Chi-Tsun, and 黃啟村. "The Optimum Design of Tool Path and Dimensional Accuracy for the Plastic Injection Mold." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/70457600332779460095.
Full textAbstract:
碩士逢甲大學
材料與製造工程所
93
In cutting practice, the cutting time, work piece quality, cutting cost were the important parameters to upgrade the competition. How to obtain the optimum cutting time (path) and machining accuracy, in order to shorten the mold manufacturing time, is the same goal for industry. The objective of this research is to investigate how to decrease the CAM programming time and machining time, and to accomplish the demand of machining accuracy in the same time , when the cutting-use simulation software and actuality machining were applied to High Speed Machining of plastic injection mold manufacturing. There are four factors will be discussed in the following ：(1) During end mill or bull nose type end mill machining, under the condition of no retained material ,the setting of tool displacement. (2) The selection of optimum shape contours tolerance. (3) For the U shape contour core with core depth to tool diameter ratio >5, to investigate the effects of the tool type (end mill tool and ball type mill tool) and the cutting direction (top and side direction) on the cutting time and accuracy. (4) For the mobile body with appearance consideration, to investigate the effects of cutting conditions include cutting feed and cutting path etc., on the burr quantity, cutting time, total cutting cost at the parting plane area. The experimental results show that：(1) Under the condition of no retained material, the optimum tool displacement equal to 70% of the tool diameter. (2) According to the work piece contour tolerance value, under the satisfication of request for cutting accuracy and cutting time, the optimum value equal to 0.01mm. (3) For the U shape contour core with a core depth to tool diameter ratio >5, under the conditions of side cutting direction and end mill tool, the cutting accuracy is the best . (4) For the parting plane region, under the conditions of 0.05mm cutting feed, single direction(from inside to outside) tool path, the burr is smallest within acceptable range.
46
Liu, Cheng Yu, and 柳承裕. "Mold Design and Injection Molding Process Analysis of aLight-Guided Block for Automotive Lighting." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/2q75fb.
Full textAbstract:
碩士國立高雄應用科技大學
模具系碩士在職專班
102
Over years of development, illumination components for automotive use have gradually changed its direction from pursuing pure brightness to both taking aesthetics and brightness into considerations. Applications of Light-Emitting-Diode (LED) make this goal doable and, further have become symbolic item for automotive brands. For an automotive light-emitting component, the main courses of designing are geometry and optical control. For example, thickness of light guide & lens and application of light guide technology have grown importance for avant-garde car lens design. This study focus on research of superficial contour rate and the contour mold shrinkage effects after samples conditions are changed. The optical tests and superficial contour spectroscopy are introduced. In this study, the contraction effects on geometry size and brightness of two different base size of light guide samples: Original thicknese 2.5mm, Improved thicknese 5mm, Block structure is defined by automotive factory (No change in appearance) are compared. Molding shrinkage includes change of contour rate on light guide. Brightness is light-emitting angle and luminance. The result shows that thickness of original sample thicknese 2.5mm has obvious molding shrinkage phenomenon in superficial contour spectroscopy analysis. In optical photometry, original sample is also influenced greatly by molding shrinkage effect on luminance and light-emitting angles which reduce the brightness and have Astigmatism. On the other hand, improved sample thicknese 5mm gets evidence improved results on molding shrinkage effect, light-emitting angle, and luminance. Keywords: Light guide, Sink Mark, differential dimension, warpage.
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Hsieh, Tsung-Hsien, and 謝宗顯. "Investigation on Heating Injection Mold of 3D Structure Design by Using External Induction Heating." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/psma5b.
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碩士中原大學
機械工程研究所
103
By growing of the consumer market, the amount of production and the surface quality of 3C product are gradually emphasized. Because of plastic products, made by injection molding, the utilizing of dynamic mold temperature control raised up mold temperature and cool down in a short time brings about the defect of the product appearance solved; additionally, decreasing of shorter cycle time to provide higher economic benefits. In this study, we used 3D induction coil design for exterior heating, and investigated the heating feasibility and temperature uniformity. For investigation, at first, we used ANSYS to evaluate the heating feasibility between 2D traditional coil and 3D induction coil design. Secondly, heating experiment was conducted by changing mold temperature, heating distance, and heating time. Finally, we tried to improve the temperature uniformity by four different kind of coil designs and verified with ANSYS results. The results shows that the 3D design can heat up non-planarity of mold surface efficiently instead of the 2D design’s. Moreover, the experiment results reveal that the ideal temperature uniformity was appeared under 3s heating time, and the temperature difference of two trapezoidal sidewall mold surfaces are 41.3% and 47.5%. In the last part, we succeeded to improve temperature discrepancy on two sidewall surfaces. The temperature discrepancy are from 41.3% and 47.5% to the better result of 21.3% and 24.5%, respectively. In other words, the temperature uniformity was enhanced as well, especially, in the Design 3. Furthermore, the design in which put magnetic block in the center of induction coil can improve the heating uniformity. In the experiment and analysis, IHTC test of 3D induction coil was built successfully, and verifying with the simulation results.
48
SU, YI-HSUAN, and 蘇倚萱. "Optimizing design of mold core for injection-molded respiratory equipment connectors with conformal cooling." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/85aufc.
Full textAbstract:
碩士明志科技大學
工業設計系碩士班
107
According to surveys, respiratory equipment connectors have a 9.14% chance of being accidentally disconnected at hospitals. Disconnections cause patients to lack oxygen and may even result in patient death or medical disputes. The main cause of disconnections is poor connector quality. The designs of molds with conventional cooling can easily lead to uneven heat distribution, thereby causing warpage and deformation. In view of this, we adopted an experimental approach. To enhance injection quality, we used a mold core with conformal cooling. The mold core was made using laser additive manufacturing technology. The optimal printing parameters obtained using the Taguchi method included laser power 50 w, layer thickness 40 μm, hatch space 0.06 mm, and scan speed 200 mm/s. These parameters were then used for actual testing, injection, and verification. The results indicate that the conformal cooling mold created using laser additive manufacturing technology can produce respiratory equipment connectors that meet ISO standards. Compared to conventional cooling, conformal cooling results in more stable product quality and increases product yield.
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Huang, Ching-Che, and 黃敬哲. "Design and Simulation of Cooling Channel in the Medical Disposal Container Plastic Injection Mold." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/55721452365972052299.
Full textAbstract:
碩士國立高雄應用科技大學
模具系碩士在職專班
101
This study explores the stress distribution of a medical disposal container product and the associated plastic injection mold during fabricating with different configuration ratio of cooling channel and different mold material. A detailed mold flow analysis in conjunction with structure analysis in the mold design process not only can determine whether the designed structural stiffness of mold is sufficient but also reduce the times of mold testing and the costs of mold modification, which improve the production efficiency dramatically. In the medical disposal container, the risk of sharps injury can also be reduced by the strengthened product stiffness. This study especially focuses on the needle-remover mechanism of medical disposal container in the objective to enhance its strength. By taking the ratio of cooling channel as variable factor, 1:3:5, 1:2.5:5 and 1:2:5, a mold flow analysis was first carried to simulate the temperature distribution on the mold. A structure analysis was then introduced to study the stress generated during the molding process. Each analysis is investigated after 20 molding process. Analysis results indicated that lower product stress could be obtained while the ratio of cooling channel configuration was 1:2:5, and the mold core insert material was beryllium copper. However, with the same ratio channel configurations and the material of core insert was AISI-P20 steel, the stress value can be similar to that of beryllium copper material. In addition, the analysis results also show that the total warpage on the bottom of the container in the vertical direction of the core insert with the AISI-P20 steel material is similar to that of beryllium copper. Keywords: Plastic Injection Mold, Cooling Channel Configuration, Mold Flow Analysis, Stress Analysis
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Lin, Jen-Chieh, and 林仁傑. "A Study on Design Framework of Plastic Injection Mold - An Example of Mobile Phone." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51918314107664578705.
Full textAbstract:
碩士逢甲大學
經營管理碩士在職專班
98
Due to shorter and shorter product life of mobile phones, the development of new mobile phone often faces time pressure. This causes mold industry firms are requested to speed up the mold-development. Introducing Early Supplier Involvement (ESI) model into mold firms and integrating the information among product development units become important issues for mold industry. This research explores the current problems of product development process for mobile phone firms and proposes an information framework for incorporating ESI model in mold-development process for mold industry. The research uses the method of WBS (Work Breakdown Structure) to decompose, to refine and to regroup the activities of original mold-development process and then using the method of IDEF (Integration Definition for Function Modeling ) to analyze and to integrate information flows of activities of mold-development process. The proposed framework seems more-lean than the original one. Finally, a case study is used to illustrate the improving procedure and to study the performance of the new framework in this thesis. The results of case study show that both required labors and information feedbacks are fewer than before. Activity units in new framework are more cohesive than before. The relationship between development units and clients are closer through the integrated information linkage. Based on new framework, mold firms can speed-up mold-development through less information loops.