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Journal articles on the topic 'Knitting-machines'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

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1

Fouda, A., A. El-Hadidy, and A. El-Deeb. "Knitting Force Measurement on Flat Knitting Machines." Journal of Textiles 2014 (August 5, 2014): 1–9. http://dx.doi.org/10.1155/2014/546472.

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Knittability can be defined as the ability of yarns to run on knitting machines without problems. Knittability can be achieved when less stress is applied on the knitting machine parts by the knitting yarns. This paper presents a novel measuring system for the knitting force needed to perform knitting yarns on flat knitting machine based on data acquisition system (DAS). The proposed system is used to measure the knitting force at different machine settings and different properties of the knitting yarns to determine the optimal production conditions. For this reason, three types of knitted fabric structures (single jersey, Rib 1 × 1, and full cardigan) with three different loop lengths and five different twists of ply yarn were produced. The obtained results showed the optimal yarn ply twist factor (αe) which gave minimum knitting force (less stress on needles or knitting yarns) at different loop lengths for each structure.
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2

Simonis, K., Y.-S. Gloy, and T. Gries. "3D knitting using large circular knitting machines." IOP Conference Series: Materials Science and Engineering 254, no. 9 (October 2017): 092004. http://dx.doi.org/10.1088/1757-899x/254/9/092004.

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3

Peiner, Christoph, Henning Löcken, Leon Reinsch, and Thomas Gries. "3D Knitted Preforms Using Large Circular Weft Knitting Machines." Applied Composite Materials 29, no. 1 (October 26, 2021): 273–88. http://dx.doi.org/10.1007/s10443-021-09956-1.

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Abstract3D-knits are typically produced on flat knitting or special circular knitting machines in a time-consuming process. The utilisation of a sewing-like pattern opens up the potential of a 10–50 times faster production on common large circular knitting machines as compared to conventional flat knitting machines. Since common large circular knitting machines are not designed for this technology, the limitations and the stability of process conditions have been rarely studied. To further proof the feasibility and increase technological maturity, agile product development is conducted. As a concept product, a sports bra with customised cups is developed and demonstrated, which is knitted in a single step in approx. 5 min using the sewing-like pattern on a large circular knitting machine. The agile process is utilised to build process knowledge, develop a methodology for product design and to defined a descriptive process terminology. In order to further accelerate and digitize the production process, an algorithm is developed and implemented to convert CAD-data into machine readable knitting structures. The paper presents the basics of the 3D-Knit one large circular knitting machines and a defined terminology. Furthermore, process knowledge is built up and from this a sequence of development steps is derived. The development of a 3D-knitted sports bra is presented as a proof of concept of the technology. Further, the first steps for digitalising the product development process are given. The results open up application possibilities in sportswear, upholstery and aerospace with increased productivity and hence cost reduction.
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Kovalyov, Yuri, Sergey Pleshko, and Evgeny Lopukhov. "DYNAMICS OF A CIRCULAR KNITTING MACHINE WITH A DEVICE OF REDUCTION OF DYNAMIC LOADS WITH TWIN SPRINGS." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 299, no. 4 (October 2021): 123–30. http://dx.doi.org/10.31891/2307-5732-2021-299-4-123-130.

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The issue of improving the efficiency of circular knitting machines remains relevant, so the task of research is to develop a new design of circular knitting machine with a device to reduce dynamic loads with torsion springs, engineering method of choosing rational parameters of the device, and evaluate its efficiency. The aim of the work is to analyze the feasibility of using a device with torsion springs to reduce the dynamic loads in the drive of circular knitting machines, to develop a method for selecting rational parameters of the device and evaluate the effectiveness of its use. The article uses modern methods of the theory of dynamics of mechanical systems in order to assess the feasibility of using a device with a torsion spring to reduce the starting dynamic loads in the drive of machines. Based on the analysis of the dynamics of mechanical systems with elastic ties, an algorithm for calculating the dynamic loads that occur during the start of circular knitting machines, the calculated dynamic model of which is reduced to a three-mass dynamic model with an average leading mass. A new design of the device is proposed to reduce the dynamic loads that occur during the start of circular knitting machines. In contrast to the known devices, the proposed device is made in the form of two cylindrical torsion springs and bypass couplings, which increases its efficiency. The new design of the drive of the circular knitting machine with the device of reduction of dynamic loadings with torsion springs, a method of a choice of rational parameters of the device and results of an estimation of efficiency of its use are presented. A scientific novelty is the development of scientific bases and engineering methods for designing devices for reducing dynamic loads in the drive of knitting machines. The practical significance lies in the development of a new design of the device for reducing dynamic loads in the drive of circular knitting machines and an engineering method for selecting its rational parameters.
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5

SHCHERBAN, V., A. PETKO, O. KOLISKO, Y. SHCHERBAN, and L. HALAVSKA. "SOFTWARE MODULES AND PROCEDURES OF A COMPUTER PROGRAM FOR DETERMINING THE TENSION OF A KEVLAR THREAD WHEN KNITTING USING A RECURSOR ALGORITHM." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 295, no. 2 (May 2021): 271–74. http://dx.doi.org/10.31891/2307-5732-2021-295-2-271-274.

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Improving the process of knitting fabrics from Kevlar complex threads on flat knitting machines is to create the minimum necessary tension in the area of formation of the knitted fabric. To ensure this, it is necessary to determine the change in relative tension in the refueling zones of Kevlar complex threads on flat knitting machines. These zones are formed by arranging the thread guides, tension compensation devices, tension devices and thread break control devices in the working area of the supply system to form a spatial filling line for each specific knitting machine. This complex task for flat knitting machines should be based on the use of specially designed computer programs. Given the specifics of processing Kevlar complex threads on flat knitting machines, when determining the relative tension in each zone, it is necessary to use a recursion algorithm, when the output tension of Kevlar complex threads from the previous zone will be the input for the next zone. When determining the tension of Kevlar complex threads, their interaction with the guides of Kevlar complex threads, tension compensation devices, tension devices and devices for controlling the breakage of Kevlar complex threads, it is necessary to take into account the value of Kevlar complex thread diameter, its physical and mechanical properties, deformation, deformation the coefficient of bending stiffness when determining the actual angle of coverage of the guide surface. Ensuring the minimum necessary tension in the area of formation of the knitted fabric will allow to obtain the parameters of the loop structure of property and tactical equipment of servicemen capable of protecting the human body from fire, cold, cutting, barbed weapons, shock and shotgun impact. Minimizing the tension in each zone of the line of Kevlar complex threads on flat knitting machines will reduce the probability of breakage, which is important for improving knitting processes from the standpoint of improving the productivity of flat knitting machines and product quality. Mathematical support of a computer program requires the development of models of thread guides, tension compensation devices, tension devices and thread break control devices, taking into account the real physical and mechanical properties of Kevlar complex threads and real geometric and structural parameters of structural elements of the feed system.
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6

Shcherban, Volodymyr, Oksana Kolysko, Gennadij Melnyk, Yury Shcherban, and Valentin Ishchenko. "Determining the tension of complex chemical threads during interaction with guide surfaces." Eastern-European Journal of Enterprise Technologies 4, no. 1 (124) (August 31, 2023): 6–18. http://dx.doi.org/10.15587/1729-4061.2023.284599.

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This paper reports a study to determine the tension of complex chemical threads made of Kevlar, carbon, polyethylene, and meta-aramid when interacting with the working bodies of knitting machines in the process of forming technical knitwear. An increase in tension after the guide surface of the working body due to a change in the value of the friction forces in the contact zone was established. It has been proven that the tension of the selected complex chemical threads after the guide surface of the working body is affected by the tension of the thread in front of the guide surface of the working body of the knitting machine. Also, the amount of tension is affected by the radius of curvature of the cylindrical guide surface of the working body and the angle of thread coverage of the guide surface of the working body of the knitting machine. This has made it possible to determine thread tension even at the initial stage of designing the technological process of thread processing on knitting machines, during the production of technical knitwear. On the basis of experimental studies for Kevlar, carbon, polyethylene, and meta-aramid complex threads, regression dependences of the stress after the cylindrical guide surface of the working body of the knitting machine were constructed. The analysis of regression dependences made it possible to establish the value of the radius of curvature of the guides when the tension of complex chemical threads before the knitting zone on knitting machines would take a minimum value. This will minimize the stress on complex threads during their processing. So, there are reasons to assert the possibility of directed regulation of the process of changing the tension of Kevlar, carbon, polyethylene, and meta-aramid complex threads during the formation of technical knitwear on knitting machines by selecting the value of the geometric parameters of the guides
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7

Salsabila, Fairuz Salma, Marwah Annie Syahputri, Aulia Bella Savira, and Sheila Andita Putri. "Substitusi Benang Akrilik Sintetik dengan Benang Alami Bambu Pada Mesin Rajut Ikm Saung Rajut." Jurnal Teknik Industri Terintegrasi 6, no. 1 (April 4, 2023): 225–30. http://dx.doi.org/10.31004/jutin.v6i1.15429.

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Replacing acrylic knitting threads which are the most used material in Knitting production at Saung Knitting IKM, natural bamboo threads can also be another alternative. This research aims to innovate IKM Saung Knitting materials so that they can produce natural knitting products. The approach method used is a qualitative method. With direct experiments on machines, bamboo yarn has the potential to produce knitwear that resembles acrylic because of its soft and environmentally friendly characteristics. Keywords: Bamboo yarn, knitting yarn, acrylic yarn
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8

Chaban, V. V., and B. F. Pipa. "Starting-up of knitting machines with prestressed drive connections." Odes’kyi Politechnichnyi Universytet. Pratsi, no. 1 (June 10, 2014): 88–92. http://dx.doi.org/10.15276/opu.1.43.2014.16.

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9

Chaban, V. V., and B. F. Pipa. "The calculation of warping spools of warp-knitting machines." Odes’kyi Politechnichnyi Universytet. Pratsi, no. 2 (December 15, 2014): 64–70. http://dx.doi.org/10.15276/opu.2.44.2014.13.

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10

Baxtiyorovna, Nizamova Barno, and Karimova Xusnida Djuma qizi. "THE FEATURES OF PATTERN FORMATION ON FLAT KNITTING MACHINES." International Journal of Advance Scientific Research 02, no. 02 (February 1, 2022): 1–11. http://dx.doi.org/10.37547/ijasr-02-02-01.

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The development of the production of knitwear will lead to the further application of new technologies and the expansion of the range of knitwear. In the fields of trade industry, as well as in the service sector, the main requirement is the production of knitwear, which is combined with high manufacturability and wide distribution, which will lead to low cost, with relatively acceptable consumer characteristics and parameters. In this regard, the solution to the above problems in the technological part of the production of knitwear is of particular importance and is necessary. The article explores the features of improving the technology of production of knitted fabrics using knitted elements, the development of practical methods for obtaining knitted knitwear based on scientific generalization, the formation of patterns on flat knitting machines.
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11

Skrivanek, Josef, and Martin Bilek. "New structure of the drive of small-diameter knitting machines." Autex Research Journal 12, no. 1 (March 1, 2012): 14–19. http://dx.doi.org/10.2478/v10304-012-0003-y.

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Abstract: This paper is concerned with the drive of small-diameter knitting machines and its optimal structure in reference to the knitting process. Based on an analysis of existing machines, a new structure is proposed employing controlled drives. In this proposal, emphasis has been laid on minimising the consumption of electric power and on simplifying the mechanical section of the structure. An analysis of the dynamic characteristics of the newly proposed concept, and a comparison with existing machines has been carried out.
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12

Єліна, T. В., Т. А. Дзикович, Л. Є. Галавська, and Т. М. Дмитренко. "РОЗРОБКА ЖІНОЧИХ ПАНЧІХ З ЖАКАРДОВИМ ВІЗЕРУНКОМ." Fashion Industry, no. 4 (February 23, 2021): 26–31. http://dx.doi.org/10.30857/2706-5898.2020.4.1.

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Development of a model of warm and stylish women's stockings with a jacquard pattern, suitable for mass production. Methodology. To achieve this goal, a review of patent and technical іnformation on the manufacture of hosiery with jacquard patterns was realized. Autodesk AutoCAD software is used to increase the effi ciency of product design. Findings. The study developed a collection of women's stockings with animal ornaments and patterns for making the same. A pattern simulating the color of a zebra's fur was chosen for experimental production.A two-color double bed jacquard stockings collection is designed. The production of this knit does not involve the knitting density changes. Correspondence of the stocking surface geometry to the measurements of a person’s leg can be provided by increasing or decreasing working needles. The latter cannot be realized on specialized circular knitting equipment for hosiery production. The models of the collection can be made on fl at knitting machines accord ing to the patterns. An experimental model is made of half-woolen yarn on a semi-industrial fl at knitting machine Brother KH-965i. The linker Hague D280E has been used for the stocking’s parts sewing. A parametric pattern of the unfolded product in Autodesk AutoCAD has been created. To adjust the pattern to the desired size, a customer has to enter the measurements and the boundary will be redrawn automatically. An application in the Autolisp programming language has been developed to automatically calculate the knitting program (increase and decrease the number of working needles). Entering course and wale spacing values of the sample structure in the program allows the automatically calculating the required number of working needles in each part of the product.Practical value. The technology of making women’s hosiery with design patterns on the basis of double jacquard knits on fl at-bed knitting machines has been develope d. Such products can be made both on modern fl at knitting machines with computer control, such as, for example, automated equipment of the Stoll or Shima Seiki brands and on semi-industrial knitting machines, such as Brother, Selver Red and others.
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13

Pusch, T., I. Wünsch, and P. Offermann. "Dynamics of yarn tension on knitting machines." AUTEX Research Journal 1, no. 2 (November 1, 2000): 54–63. http://dx.doi.org/10.1515/aut-2000-010202.

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Abstract The submitted paper reports a study of investigation of the dynamics of yarn tension, i.e. to the time dependence of the yarn tension on large-diameter circular knitting machines (LCKM). The special feature of this study is the fact that predictions are made for the course of the yarn tension during a single stitch-forming process. Only the yarn tension in the area of the yarn feeder and the yarn guide eye can be measured. Some results of such experimental investigations have already been published [1,2]. In this paper, additional results of theoretical model calculations are presented. In particular, by these calculations it will be possible to determine the structure of the yarn tensile force at the knitting point, i.e. in the region between knitting needles. The calculation of the yarn tension required a numerical solution of a system of non-linear differential equations. The special difficulty lies in the formulation of the non-equilibrium state of the running yarn, especially in the formulation of the robbing-back effect.
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14

Đorđević, Miodrag, and Sandra Stojanović. "Analysis of yarn tension forces in the weft knitting phase of circular knitting machines." Tekstilna industrija 70, no. 1 (2022): 42–46. http://dx.doi.org/10.5937/tekstind2201042d.

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In the process of loop formation, the weft knitting phase has a dominant place, both from the aspect of forming the loop as well as determination its length and geometric shape. The loop length is the most important technological parameter in the knitted fabrics structure analysis and it is directly a function of sinking depth. The yarn tension in the weft knitting phase is determined by the following parameters: values of yarn tension at the entrance to the knitting system, yarn friction with knitting needles, yarn guiding speed, yarn bending stiffness and yarn angle coverage with knitting needles. Determination the value of yarn tension in the weft knitting phase is extremely important for the reliability of the knitting process. The obtained results show that the maximum values of yarn tension in the loop formation process occur in the weft knitting phase and that they must not be greater than the forces of the elastic limit of the used yarn.
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15

Girin, I. Ya, and A. V. Volkova. "Processing viscose yarn on basic knitting machines." Fibre Chemistry 17, no. 1 (1985): 8–9. http://dx.doi.org/10.1007/bf00548844.

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16

Sun, Lei, Weimin Shi, Junru Wang, Huimin Mao, Jiajia Tu, and Luojun Wang. "Research on Production Scheduling Technology in Knitting Workshop Based on Improved Genetic Algorithm." Applied Sciences 13, no. 9 (May 5, 2023): 5701. http://dx.doi.org/10.3390/app13095701.

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Production scheduling in a knitting workshop is an important method to improve production efficiency, reduce costs and improve service. In order to achieve a reasonable allocation of parallel machines as well as cooperation between different machines within the workshop, thereby ensuring the optimal scheduling of production plans, this paper proposes a scheduling method using an improved genetic algorithm (IGA) based on tabu search. Firstly, the production scheduling model of a knitting workshop is established. Secondly, an IGA based on the minimum processing time rule, the priority idle machine rule and the production order ranking code is used to optimize the solution. Finally, an experiment platform for knitting workshop production is built to verify the proposed scheduling method. The experimental results show that the proposed IGA based on tabu search performs well in terms of preconvergence speed, global search capability and local search capability. The IGA converges faster than the traditional genetic algorithm by about 25%, reduces the redundancy time of scheduling, meets the production requirements of the knitting intelligent workshop and has a good reference value for promoting the intelligent development of knitting production.
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17

Fang, Yuan, and Fan Tian Xia. "Dynamic Research of Knitting Element for Computerized Flat Knitting Machine Based on ANSYS/LS-DYNA." Advanced Materials Research 472-475 (February 2012): 488–93. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.488.

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Based on research on the knitting processes, an impact mechanic model for knitting elements was established to investigate the variation of the impact force in vertical direction between the cam and the select jack. The variation of the displacement, velocity, acceleration of the select jack and the stability for the needles’ moving has been confirmed by the simulation of knitting process based on the software ANSYS/LS-DYNA. Furthermore, the variation of the select jack has been confirmed by experimental measurement during the knitting process. The data of the experiment results were in accordance with the ANSYS’ simulation which verified the correctness of the ANSYS’ analysis. It provided a theoretic basis for the design of computerized flat knitting machines.
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18

Skrivanek, Josef, Martin Bilek, and Ondrej Batka. "Modified Drive Structure of a Knitting Machine." Machines 10, no. 8 (July 27, 2022): 615. http://dx.doi.org/10.3390/machines10080615.

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This paper deals with the problematic of the drive system of small-diameter knitting machines (hereinafter “knitting machines”). An alternative design of a new drive system is presented that addresses the effective working position of selected operating elements, i.e., a cylinder, a dial, and a roller cutter. The design is protected by patent No. 303578, and the authors of this paper also authored the patent. For the description and simulation of the drive system, mathematical models have been elaborated of the existing and new drive system, which include an additional design of a more suitable stroke for the movement of the cylinder. The output of the simulations are the courses of kinematic quantities, torque, and electric current, elucidating the benefits of the new drive system. Based on the structure of the new drive system, a test device has been designed and manufactured to verify functionality and reliability. The new drive system consumes less energy, simplifies the machine frame and reduces noise emissions. The obtained results can help in researching the issue of knitting machine frames, and in addition, the new system brings new technological possibilities for knitting.
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19

Oldham, K., N. D. Burns, and G. J. Simms. "4—NON-LINEAR CAMS FOR WEFT-KNITTING MACHINES." Journal of The Textile Institute 76, no. 1 (January 1985): 30–37. http://dx.doi.org/10.1080/00405008508631776.

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20

Holderied, Prisca, Thomas Mutschler, Solveig Tresp, Julia Klausmann, Lisa Streitenberger, Marie-Ange Bueno, and Marcus O. Weber. "Development of a new yarn supply for weft knitting machines to produce innovative knitwear." Communications in Development and Assembling of Textile Products 4, no. 1 (February 8, 2023): 51–60. http://dx.doi.org/10.25367/cdatp.2023.4.p51-60.

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The increasing demand for technical textiles makes innovations and acceleration of processes necessary. This research paper presents an innovative knitting technology. The technology, which was funded by the European Regional Development Fund as an R&D-project (EFRE-0400310), reduces production time and creates completely novel innovative knitting structures. This paper introduces the validation process of the innovative technology and therefore brings the theoretical considerations into a practical application. The yarn supply technology enables the production of an innovative double-layered fabric on flat and circular knitting machines. This double-faced fabric consists of two single-faced fabric sides which are knitted by a first yarn in the front needle bed and a second yarn in the rear needle bed. These two fabrics are joined by a third yarn knitting in both needle beds in the same carriage stroke. The method ensures that up to three yarns knit in one system pass. Furthermore, a fourth yarn can be implemented to insert a weft yarn. Additionally, the two single-faced fabrics can be produced simultaneously in the same carriage stroke in the front and rear needle beds. In this case, fewer carriage strokes are required for knitting standard structures such as Milano Rib. This structure can be produced one third faster than with conventional methods. The results show that the technology on the circular knitting machine produces good quality knitted fabrics. On the flat knitting machine, however, further research and development are needed to validate the technology.
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21

Hu, Guo Jun, Fang Feng, and Wei Qiang Zhao. "Design of Control Circuit for Needle-Selected Mechanism of Knitting Machines." Advanced Materials Research 328-330 (September 2011): 2257–60. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.2257.

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The needle-selected technology is one of the key one for the control system of knitting machine. Based on the analysis of the structure and principle for the needle-selected mechanism, the drive circuits of the needle-selected device are designed to ensure the stability when knitting machines run. Additionally, this paper presents the discussion of the software design for needle -selected technology, which provides a theoretical reference for the research and development of the control system.
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22

Skřivánek, Josef, Martin Bílek, and Michal Kašpárek. "Control Optimisation of the New Drive of Small Diameter Knitting Machines." Autex Research Journal 17, no. 1 (March 1, 2017): 1–5. http://dx.doi.org/10.1515/aut-2015-0024.

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Abstract The article is concerned with the issues of the drive of small diameter knitting machines. In connection to the proposal of optimum structure of the driving systems of the machine, there have been analysed the possibilities of precisely controlled servo drives. An optimised structure of the drives allows for the utilisation of precisely defined position and velocity functions. There is applied here the function of a polynomial of 7th degree, proposed for impact-free course of the acceleration, and it is compared with the results corresponding to the existing structure of drives of knitting machines. At the same time, there is analysis and comparison of the consumption of electric power by the original and optimised systems.
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23

Zhang, Zhouqiang, Sihao Bai, Guang-shen Xu, Xuejing Liu, Jiangtao Jia, Zhi Feng, and Feilei Wang. "Knitting needle fault detection system for hosiery machine based on laser detection and machine vision." Textile Research Journal 91, no. 1-2 (June 28, 2020): 143–51. http://dx.doi.org/10.1177/0040517520935210.

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The knitting needle cylinder is one of the core parts of a hosiery machine. The operation of its needles can directly affect the production quality and efficiency of the hosiery machine. To reduce the production loss of a hosiery machine caused by knitting needle faults, a knitting needle fault detection system for hosiery machines based on a synergistic combination of laser detection and machine vision is proposed in this paper. When the system was operating normally, a photoelectric detector collected the laser signal reflected by the knitting needle and the system monitored the operation of the knitting needle using the ratio of adjacent peak-to-peak distances of the signals. When a fault signal was detected, the hosiery machine was stopped by the system immediately, and a charge-coupled device camera was used to take an image of the faulty knitting needle. After image preprocessing, the faulty knitting needle could be identified quickly and accurately using an image region size classifier based on a decision tree. The experimental results showed that a single image classification by the classifier could be performed in as little as 0.002 s.
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24

Araújo, Mário de, André Catarino, and Hu Hong. "Process Control for Total Quality in Circular Knitting." AUTEX Research Journal 1, no. 1 (November 1, 1999): 21–29. http://dx.doi.org/10.1515/aut-1999-010103.

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Abstract This paper deals with a problem of major concern to the knitting industry, which is fabric defects. When a defect occurs, the knitting machine has to be stopped and the fault corrected, thus resulting in time loss which is uneconomic. Eventually, the knitted fabric may be rejected if quality requirements are not met. An effective monitoring of the knitting process is required in order to avoid or detect and locate a defect and its cause as soon as possible, avoiding productivity and quality losses. In circular knitting machines the yarn input tension (Ti) can be used as a means of process control, so that defects may be prevented or quickly detected. This was found to be a valuable approach to accomplish this task, since it reflects the general behaviour of the knitting machine. A measuring system is presented, along with the results obtained. Considerations are made around the problem of automatic detection and some approaches are suggested. Finally, some conclusions are drawn from the work developed.
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25

Ma, Jie, Xiao Feng Zha, Hai Bin Tao, and Jun Fang Ni. "Testing System of Needle Selectors for Jacquard Knitting Machines." Applied Mechanics and Materials 397-400 (September 2013): 1174–77. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1174.

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Based on piezoelectric theory of computer jacquard circular knitting machines, the needle selectors are analyzed under various complicated working conditions. According to characteristics of the inverse piezoelectric effect, the control system for needle mechanisms is designed and the driving program is implemented by C language, which is used to test the functions of needle mechanisms.
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26

Chellali, S., R. Halfaoui, and B. Chemani. "Investigation of short fibers formation on a circular knitting machine using cotton as raw material." Journal of Fundamental and Applied Sciences 12, no. 2 (May 24, 2023): 906–15. http://dx.doi.org/10.4314/jfas.v12i2.26.

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When providing care, to protect a part of the human body against resins and plas ters for certain time, it is necessary to use a circular knitted band in cotton as a raw material. The generating of Cotton fiber fly throughout the knitting process is due to interactions of frictional surfaces with the hairiness of ring spun yarn. During the manufacture short fibers are formed in the machine device, this problem is more important with the use of cotton yarns. In this research paper, the short fibers formation on circular knitting machines from spun yarns such as cotton is investigated The knitting conditions consist of; yarn tension, yarn feeding speed and the angle contact of the yarn with guides and needles. The results obtained illustrate the effect of yarn tension on the short fibers deposit caused by the combination of yarn friction with the knitting elements.
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27

BEREZIN, Leonid. "SYSTEMATIZATION OF CALCULATIONS FOR THE RELIABILITY OF ELEMENTS OF KNITTING MECHANISMS OF SOCKS MACHINES." Herald of Khmelnytskyi National University. Technical sciences 309, no. 3 (May 26, 2022): 184–88. http://dx.doi.org/10.31891/2307-5732-2022-309-3-184-188.

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The paper covers a wide range of issues in terms of longevity and reliability, which are presented in the modern theory and practice of designing for elements of knitting systems of sock machines. The relevance of the work is confirmed by the current trend in the production and modernization of relatively small batches of machines, which requires a reduction in time and cost of design, primarily due to the calculation recommendations. The analysis and generalizations concerning the choice of calculations on longevity in deterministic and reliability in probabilistic statements for details of difficult forms and limited in the sizes are offered, in particular knitting needles and malleable working surface of cams, which are characterized by random loads and variations of strength characteristics of materials. The mathematical apparatus for the analysis of influence on fatigue longevity of needles of increase of speed parameters of the automatic machine and of constructive measures for reduction of loadings in pair of a needle and cams is presented.. A complex approach is presented for knitting needles for the security of the given fatigue longevity using of the position of the dynamic analysis, calculation of the loading, mathematical statistics and the theory of probability, which allows to quickly evaluate the effectiveness of the proposals to constructive and technological solutions. The dependences for the calculations of cams of different construction for fatigue strength in the probabilistic setting, which in comparison with traditional (according to the normalized factor of safely) a sufficient level of reliability while minimizing of size. Specifics for cams with malleable working surface of equal reliability and with the provision of simultaneous beam and double cantilever deformations are presented. Shown the expediency of using trapezoidal consoles of equal resistance and the algorithm for calculating the sizes of their root and end sections according to the coefficient of shape and a given deflection, which minimizes the length of the cam consoles. The advantages of computer modeling by the finite element method are listed, primarily obtaining the final results with sufficient accuracy and convenience for analysis.
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Lin, Jenny, Vidya Narayanan, Yuka Ikarashi, Jonathan Ragan-Kelley, Gilbert Bernstein, and James McCann. "Semantics and Scheduling for Machine Knitting Compilers." ACM Transactions on Graphics 42, no. 4 (July 26, 2023): 1–26. http://dx.doi.org/10.1145/3592449.

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Machine knitting is a well-established fabrication technique for complex soft objects, and both companies and researchers have developed tools for generating machine knitting patterns. However, existing representations for machine knitted objects are incomplete (do not cover the complete domain of machine knittable objects) or overly specific (do not account for symmetries and equivalences among knitting instruction sequences). This makes it difficult to define correctness in machine knitting, let alone verify the correctness of a given program or program transformation. The major contribution of this work is a formal semantics for knitout, a low-level Domain Specific Language for knitting machines. We accomplish this by using what we call the fenced tangle , which extends concepts from knot theory to allow for a mathematical definition of knitting program equivalence that matches the intuition behind knit objects. Finally, using this formal representation, we prove the correctness of a sequence of rewrite rules; and demonstrate how these rewrite rules can form the foundation for higher-level tasks such as compiling a program for a specific machine and optimizing for time/reliability, all while provably generating the same knit object under our proposed semantics. By establishing formal definitions of correctness, this work provides a strong foundation for compiling and optimizing knit programs.
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29

Ren, Wen, Xia Wen, and Sencai Lai. "Digital Real-Time Rotating Speed Measuring and Fuzzy PID Control Algorithm Design for the Multi-Speed Electronic Let-Off System." Fibres and Textiles in Eastern Europe 29, no. 4(148) (August 31, 2021): 48–55. http://dx.doi.org/10.5604/01.3001.0014.8231.

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Aiming at the warp knit fabric horizontal strip problem faced by the multi-speed electronic let-off process of warp knitting machines, a design scheme of a fully digital intelligent multi-speed electronic system is proposed. A wide-range digital speed measurement method is proposed which solves the problem that the traditional analog circuit speed measurement method cannot measure the real-time warp beam speed, and also eliminates the problem of the low-speed feedback blind zone. According to the characteristics of the electronic let-off system of warp knitting machines, the hardware structure and software algorithm of the fuzzy PI control system were designed which can adjust the control parameters of the traditional PI controller in real time according to the fuzzy control table, and realise stable multi-speed electronic let-off. The effectiveness of the design method was verified by simulation.
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30

Hu, Guo Jun, Han Qi, and Wei Qiang Zhao. "Design of Adjustment Devices of the Weaving Density for Computerized Knitting Machines." Advanced Materials Research 201-203 (February 2011): 606–9. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.606.

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The working principle of the adjustment device of the weaving density for the knitting machine is briefly introduced. Compared to the limitation from the adjustment device of the hand-cranked knitting machine, this paper presents another design method that the device is automatically controlled by the stepping motor to change the weaving density.
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31

Prążyńska, Aleksandra, and Zbigniew Mikołajczyk. "Identification of the Process of Dynamic Stretching of Threads in Warp-Knitting Technology." Autex Research Journal 17, no. 4 (December 20, 2017): 334–43. http://dx.doi.org/10.1515/aut-2016-0039.

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Abstract The publication presents a theoretical study of the susceptibility of rheological models of threads to dynamic stretching in the context of modern, highly efficient textile technologies. Input parameters of the four analyzed models, the Kelvin-Voigt model, the Maxwell model, Standard model 2, and the Zener model, corresponded to the actual values of the coefficients of viscosity, elasticity, kinematic and dynamic loading, and stretching speed for the analyzed polyester silk threads produced in a knitting process, with knitting speeds from 700 to 1,600 courses/min. The research proves that the tested thread models behave differently in the stretching process-the Kelvin-Voigt model is sensitive to both the increases in kinematic loading and viscosity coefficient, Standard model 2 is only susceptible to dynamic stiffness, and the Zener model is significantly sensitive to kinematic loading. All responses of the models increase with the increase in stretching speeds. The obtained results indicate substantial “accuracy tolerance” in setting input parameters while identifying dynamics of the knitting process on warp-knitting machines.
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32

Sato, S. "Special issue : electronic control technology in knitting machines.Progress and prospect of electronic control technology in knitting machines." Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 44, no. 4 (1991): P168—P174. http://dx.doi.org/10.4188/transjtmsj.44.4_p168.

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33

Han, Qiang, and Pei Wei Hou. "The Pattern Management Mathematical Method of Computer Flat Knitting Machines Based on Embedded Processor." Applied Mechanics and Materials 43 (December 2010): 156–59. http://dx.doi.org/10.4028/www.scientific.net/amm.43.156.

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Computer flat knitting machine (CFKM) is a kind of high-technology knitting equipment, which integrates computer science, mechatronics technology and knitting technics. The paper anatomized the structure of data information of the CFKM, carefully discussed the pattern management mathematical method of the data processing and then put forward the implementation of pattern management mathematical method in embedded processor.
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34

Kholboyev, Elyor, Dilafruz Khamidova, Maftunakhon Abdurakhimova, and Nilufar Khankhadjaeva. "Exploring the technological possibilities of next-generation flat knitting machines." ACADEMICIA: An International Multidisciplinary Research Journal 11, no. 9 (2021): 163–70. http://dx.doi.org/10.5958/2249-7137.2021.01887.5.

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35

Weber, Marcus O., and Andrea Ehrmann. "Necessary modification of the Euler–Eytelwein formula for knitting machines." Journal of the Textile Institute 103, no. 6 (June 2012): 687–90. http://dx.doi.org/10.1080/00405000.2011.598665.

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36

Fedorko, Gabriel, and Zdeněk Čujan. "Organization of Mounting Division by Use of Material Flow Minimization." Applied Mechanics and Materials 708 (December 2014): 190–95. http://dx.doi.org/10.4028/www.scientific.net/amm.708.190.

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Paper is oriented to the solution of mounting device for knitting machines with nested workplace organization. The proposed solution is related to the transition from the nested organization to the effective circular workplace organization which improves the work environment and also increases the number of final products.
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37

Cong, Honglian, Hui Lei, Yongchao Zhang, Aijun Zhang, and Pibo Ma. "Weft-knitted lace fabric simulation based on the spring-mass model." International Journal of Clothing Science and Technology 29, no. 1 (March 6, 2017): 60–68. http://dx.doi.org/10.1108/ijcst-10-2015-0118.

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Purpose The obtained simulation structures could reflect the appearances and the features of the fabrics. The purpose of this paper is to promote a lot for design and manufacturing of weft-knitted lace fabrics (WKLF). Design/methodology/approach The advantages of WKLF compared with warp-knitted ones were displayed. The formation mechanism of the WKLF was analyzed with employing the mechanics principles. Spring-mass model was proposed in this paper to achieve the simulation of the fabrics. End mass points and intermediate mass points were involved in the model. The displacement of end mass points was considered the dominance and the foundation to settle the positions of all the mass points. Findings A novel jacquard lace style fabric with pattern-background effect knitted on circular knitting machine were put forward, which were different from the traditional lace fabrics manufactured on the warp knitting machines. Originality/value First, as the manufacturing equipment, circular knitting machine costs much less than warp knitting machine; second, the elastic performance along weft direction of WKLF is more excellent than that of warp-knitted ones. Third, the excellent extensibility gives nice comfort; furthermore, long floating threads do not exist on the WKLF surface, so that the snag will be avoided.
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38

Kayumov, A., B. Mamarasulov, B. Doniyarov, and M. Doniyarova. "Analysis of warping technologies for a wide range of knitting machines." ACADEMICIA: An International Multidisciplinary Research Journal 11, no. 3 (2021): 2128–31. http://dx.doi.org/10.5958/2249-7137.2021.00838.7.

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39

Kennon, W. R., T. Dias, and P. Xie. "A Novel Positive Yarn-feed System for Flat-bed Knitting Machines." Journal of the Textile Institute 91, no. 3 (January 2000): 140–50. http://dx.doi.org/10.1080/00405000008659547.

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40

Dai, Ning, Kaixin Xu, Xudong Hu, Yanhong Yuan, and Jiajia Tu. "Research on an Intelligent Piezoelectric Needle Selector System with Closed-Loop Fault Detection Capability." Electronics 12, no. 20 (October 19, 2023): 4331. http://dx.doi.org/10.3390/electronics12204331.

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The piezoelectric needle selector is a crucial component of computerized dobby weft knitting machines. With the continuous development of weft knitting machine technology, enhancing the accuracy of piezoelectric needle selector control is essential. Accurate determination of whether the blades are in the correct position would significantly improve the precision of piezoelectric needle selector control. In this study, piezoelectric ceramic sensors were used to collect impact vibration signals when the blades struck the damper baffle. Key hardware circuits were designed for this purpose. A self-learning algorithm was employed to capture the highest point and the time it takes to reach the highest point in the impact vibration signal. A fault detection algorithm was used to implement closed-loop fault detection for piezoelectric needle selectors. Experimental results and practical applications have demonstrated that this research effectively addresses the accurate determination of whether the piezoelectric needle selector blades are in the correct position. It has reduced the defect rate of fabric production in weft knitting, thereby improving the overall efficiency and profitability of businesses.
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41

Дворжак, В. М. "ЗАСТОСУВАННЯ МЕХАНІЗМУ ЧЕТВЕРТОГО КЛАСУ ДЛЯ ПРИВОДУ ВУШКОВИХ ГОЛОК ОСНОВОВ’ЯЗАЛЬНОЇ МАШИНИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 15–24. http://dx.doi.org/10.30857/1813-6796.2020.3.1.

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Development and research of functionally-adequate target mechanisms of technological machines of light industry with application of applied CAE-programs. Used the apparatus of vector algebra; analytical and numerical methods for determining the position functions of planar mechanisms containing a structural group of the fourth class of the second order, based on the vector transformation of coordinates; random search method for metric synthesis of flat mechanisms; methods of computer visualization and animation of kinematic schemes of flat mechanisms of higher classes. Mathematical models describing the position functions of the mechanism of eyelets of a warp knitting machine containing a structural group of the fourth class of the second order with rotating kinematic pairs in the form of angles of moving links, free vectors constructed on these links and radius vectors of characteristic points of the mechanism as a function of the angle of rotation of the master crank. The geometrical parameters of the flat six-link mechanism of eyelets for the warp knitting machine containing the structural group of the fourth class of the second order with rotating kinematic pairs as a result of metric synthesis of the mechanism by random search in CAE-program are determined; computer circuit modeling of the obtained mechanism is performed; graphs of visualization and animation of the kinematic scheme of the received mechanism are constructed; identification of the kinematic scheme of the obtained mechanism for compliance with the accepted structure; the received graph of function of position of an auricular needle of the mechanism of the fourth class; the functions of the position of the eye needle of the new mechanism and the mechanism of the basic knitting machine OV-7 are compared. The structure of a flat six-link mechanism, containing structural groups of the fourth class of the second order with rotating kinematic pairs, is proposed for use as a drive in a warp knitting machine on the example of the mechanism of oscillating movement of eyelets. The geometric dimensions of the moving parts of the functionally adequate mechanism of the fourth class for the drive of the eye needles of the basic knitting machine are determined. Software blocks for automated computer metric synthesis and calculation of link angles and radius vectors of characteristic points of the mechanism in the CAE program have been created. Practical Value is to use the results for the design and construction of flat mechanisms of the fourth class with rotating kinematic pairs of warp knitting machines, in which the working bodies make stops during the work process.
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42

Дворжак, В. М. "ЗАСТОСУВАННЯ МЕХАНІЗМУ ЧЕТВЕРТОГО КЛАСУ ДЛЯ ПРИВОДУ ВУШКОВИХ ГОЛОК ОСНОВОВ’ЯЗАЛЬНОЇ МАШИНИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 15–24. http://dx.doi.org/10.30857/1813-6796.2020.3.1.

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Development and research of functionally-adequate target mechanisms of technological machines of light industry with application of applied CAE-programs. Used the apparatus of vector algebra; analytical and numerical methods for determining the position functions of planar mechanisms containing a structural group of the fourth class of the second order, based on the vector transformation of coordinates; random search method for metric synthesis of flat mechanisms; methods of computer visualization and animation of kinematic schemes of flat mechanisms of higher classes. Mathematical models describing the position functions of the mechanism of eyelets of a warp knitting machine containing a structural group of the fourth class of the second order with rotating kinematic pairs in the form of angles of moving links, free vectors constructed on these links and radius vectors of characteristic points of the mechanism as a function of the angle of rotation of the master crank. The geometrical parameters of the flat six-link mechanism of eyelets for the warp knitting machine containing the structural group of the fourth class of the second order with rotating kinematic pairs as a result of metric synthesis of the mechanism by random search in CAE-program are determined; computer circuit modeling of the obtained mechanism is performed; graphs of visualization and animation of the kinematic scheme of the received mechanism are constructed; identification of the kinematic scheme of the obtained mechanism for compliance with the accepted structure; the received graph of function of position of an auricular needle of the mechanism of the fourth class; the functions of the position of the eye needle of the new mechanism and the mechanism of the basic knitting machine OV-7 are compared. The structure of a flat six-link mechanism, containing structural groups of the fourth class of the second order with rotating kinematic pairs, is proposed for use as a drive in a warp knitting machine on the example of the mechanism of oscillating movement of eyelets. The geometric dimensions of the moving parts of the functionally adequate mechanism of the fourth class for the drive of the eye needles of the basic knitting machine are determined. Software blocks for automated computer metric synthesis and calculation of link angles and radius vectors of characteristic points of the mechanism in the CAE program have been created. Practical Value is to use the results for the design and construction of flat mechanisms of the fourth class with rotating kinematic pairs of warp knitting machines, in which the working bodies make stops during the work process.
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43

SHCHERBAN, VOLODYMYR, OKSANA KOLISKO, MARJANA KOLISKO, VALERIJ KALASHNIK, and YURYJ SHCHERBAN. "SOFTWARE OF THE ALCHORITHM OF THE DICHOTOMY AT COMPUTER DETERMINATION OF TENSION OF COMPLEX THREADS." Herald of Khmelnytskyi National University 301, no. 5 (October 2021): 240–43. http://dx.doi.org/10.31891/2307-5732-2021-301-5-240-243.

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Improving the existing technological processes of processing complex threads on knitting machines and looms requires determining the change in relative tension in the areas of refueling. The change of tension occurs due to the interaction of complex threads with guides of large curvature, taking into account and without taking into account the radial coverage of the complex thread by the surface of the guide. The task of determining the tension should be based on the use of dichotomy algorithm software in computer determination of the tension of complex threads. Determining the change in relative tension in the areas of filling of complex threads on knitting machines and looms, taking into account and without taking into account the radial coverage of the complex thread by the guide surface, will improve the technology of production of knitwear and fabrics. Improvement of technological processes of the knitting and textile industry should be based on complex researches of process of interaction of complex threads with directing surfaces of big curvature. Obtaining theoretical dependences will allow to obtain equations for determining the tension of the thread in the area of fabric formation and knitwear, reduce the percentage of thread breaks, improve the quality of finished products. Many studies do not take into account the nonlinear relationship between force and coefficient of friction in obtaining the final equations. All this leads to significant differences between theoretical and experimental dependences, which does not allow the use of the former in specific calculations. Downtime of technological equipment associated with the elimination of cliffs is 75-80% of the total downtime. It is possible to significantly reduce the number of breaks by using quality raw materials and optimizing the conditions of thread processing on knitted and textile machines, where their interaction with the guides and working bodies of great curvature takes place. The tension dependences of complex threads have the form of a system of transcendental equations, for the solution of which it is necessary to use numerical methods. The dichotomy method is the most effective.
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44

Kapllani, Levi, Chelsea Amanatides, Genevieve Dion, and David E. Breen. "Loop Order Analysis of Weft-Knitted Textiles." Textiles 2, no. 2 (May 18, 2022): 275–95. http://dx.doi.org/10.3390/textiles2020015.

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In this paper, we describe algorithms that perform loop order analysis of weft-knitted textiles, which build upon the foundational TopoKnit topological data structure and associated query functions. During knitting, loops of yarn may be overlayed on top of each other and then stitched together with another piece of yarn. Loop order analysis aims to determine the front-to-back ordering of these overlapping loops, given a stitch pattern that defines the knitted fabric. Loop order information is crucial for the simulation of electrical current, water, force, and heat flow within functional fabrics. The new algorithms are based on the assumption that stitch instructions are executed row-by-row and for each row the instructions can be executed in any temporal order. To make our algorithms knitting-machine-independent, loop order analysis utilizes precedence rules that capture the order that stitch commands are executed when a row of yarn loops are being knitted by a two-bed flat weft knitting machine. Basing the algorithms on precedence rules allows them to be modified to adapt to the analysis of fabrics manufactured on a variety of knitting machines that may execute stitch commands in different temporal orders. Additionally, we have developed visualization methods for displaying the loop order information within the context of a TopoKnit yarn topology graph.
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45

Jeong, K. Y., and Y.-B. Kim. "Dynamic modelling of the latch needle cam system of weft knitting machines." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 217, no. 2 (February 1, 2003): 219–27. http://dx.doi.org/10.1243/095440603762826530.

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Knitted textile fabrics are usually produced on weft knitting machines. The basic mechanism of the machines to convert textile yarn into knitted fabric is called a latch needle cam system. A rigid-body model with five bodies is set up to analyse the motion of the needle of the latch needle cam system. The force element is modelled as a spring damper element between the needle butt and each virtual body on the cam curves. The spring constant is obtained from the cam angle, the friction coefficient and the stiffness of the needle. Numerical examples are given to show the path of the needle butt and the forces between the needle and the cams. For various rotational speeds of the cylinder, the maximum vertical and horizontal forces are obtained.
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46

Melnyk, Liudmyla, Olena Kyzymchuk, and Liudmyla Zubkova. "Ukrainian Folk Ornaments in Modern Knitting." TEKSTILEC 64, no. 2 (March 27, 2021): 84–95. http://dx.doi.org/10.14502/tekstilec2021.64.84-95.

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National arts and crafts are not only the skills of an individual nation but an ethnic phenomenon that has unique features and serves as a source of information on national history and culture. Decorative and applied art in Ukraine combines the traditions and techniques of manufacturing and decoration, which have been developed and passed down from generation to generation. It has a clear national identity and numerous regional differ¬ences in ornamental motifs, compositions and favourite colours. Therefore, the Ukrainian folk art has a significant potential and is a source of ideas in creating modern clothing as well as interior items. Embroidery as a way of creating ornamental motifs on a textile material using various techniques is a common process for decorating clothes and interiors for the Ukrainians. Today, ornamental compositions of embroidered folk textiles could be transmitted into modern clothes using various technologies. However, the use of a knitting machine allows creating a pattern during the item production. The ornament transformation into a pattern for knitting can be carried out with graphic software by creating a grid with a cell size similar to the loop size of a knitted structure for corresponding interlooping. A number of clothing and interior items with ethnic motifs was created using the capabilities of flat knitting machines within the masters programme “Knitting Technology and Design” at the Textile Technology and Design Department of the Kyiv National University of Technologies and Design.
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47

BEREZIN, Leonid. "TO CALCULATE THE LOADING OF KNITTING NEEDLES OF AUTOMATIC HALF-HOSE MACHINES." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 299, no. 4 (October 2021): 131–35. http://dx.doi.org/10.31891/2307-5732-2021-299-4-131-135.

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An important link in the analysis of the longevity of details by the criterion of fatigue strength is the calculation of parameters that take into account the peculiarities of the technological regime in terms of load and the corresponding number of cycles that affect the accumulation of fatigue failure. The final range of loads of knitting needles of automatic half-hose machine was based on the systematization of amplitudes of forces depending on the frequency of their implementation. Previous works has assumed the assumption of a one interaction of the needle heel with the cams, which is experimentally refuted by the example of modern high-speed automatic half-hose machine. The aim of the work is to adjust the provisions of calculating the load of knitting needles of half-hose machines for design estimate of longevity, taking into account the specific features of the impacts of needles with the cams of the knitting system, which affect the total number of load cycles. The condition of rupture of the contact in the pair of the needle heel and the inclined cam after their impact is considered, taking into account the inertial and rigid parameters of the system, including the resisting force of the needle in the groove of the cylinder. According to the results of the dynamic analysis, the expressions of the minimum speed at which the needle can rebound from the cam and the vertical component of the needle rebound speed at the moment of its separation from the cam are obtained. The analysis of the influence of the force of resistance of the needle movement in the race on the vertical speed of the needle is performed. The issue of the bounce of the heels of unselected needles from the lower edge of the inclined cam due to their inertial run-out was studied separately. It is established that at certain circular speeds of the needle cylinder leads to additional impacts of the needles with the horizontal limiting cams and increases their destruction. The results of studies of the possible rebound of the needle heel from the inclined cam and the interaction of the needle with the limiting horizontal cams are a supplement to the method of calculating the loading of needles and are aimed at improving the accuracy of design longevity of needles.
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48

Shlennikova, O. A., and V. A. Zinov’eva. "Damageability of glass fibres on knitting machines and possibility of eliminating it." Fibre Chemistry 42, no. 5 (March 2011): 326–28. http://dx.doi.org/10.1007/s10692-011-9280-9.

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49

Pujianto, Hendri, Bambang Yulianto, Hamdan S. Bintang, and Dinda Amelia Pramesti. "Optimum Splice Thickness Ratio Splicer of a Winding Machine to PE20KT Thread Splicing Quality." Sainteks: Jurnal Sains dan Teknik 5, no. 2 (September 27, 2023): 228–35. http://dx.doi.org/10.37577/sainteks.v5i2.605.

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Winding machines are needed after the spinning process on ring-spinning machines because small packages of spinnerets are mostly not suitable for efficiently carrying out subsequent processes such as weaving and knitting. The splicer is independently actuated to optimize splicing cycles. PT Delta Dunia Tekstil II (DDT 2) is a company operating in the spinning industry, with the CD line producing 100% polyester yarn, which is used to make fabric in the knitting process. Based on observations, thread defects occur, such as loops and holes in the knitted fabric, because the thread splices resulting from the winding process are brittle and thin. Experiments on setting joint thickness parameters on splicer adjustment indicators 1–5 with a ratio of 0.25 were carried out. After carrying out the experiment, 3 ratios were obtained for sampling visual tests and joint strength, namely a ratio of 2.5, 2.75, and 3. Observing and calculating the splice strength of the three splicer ratios sampled, it was found that the ratio of parameter 3 in the splicer was visually very good and consistent. Strange results also meet the standard, of 92.37%. The optimal splicer ratio setting that can be used for the Carded 20 KT production process is setting the splicer ratio with a splice thickness parameter of 3.
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50

Ainul Huda, Abu Talib, Misron Siti Nuranis Syazana, Mohd Fu'ad Nurul 'Izzah, Zamri Nurul Ariesha, and Nasir Eryna. "PHYSICAL PROPERTIES OF SINGLE JERSEY BAMBOO COTTON FABRIC PRODUCED ON HOME KNITTING MACHINE." Borneo Akademika 4, no. 1 (March 1, 2020): 13–24. http://dx.doi.org/10.24191/ba/v4i1/35338.

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The Silver Reed Model LK150 knitting machine is a home knitting machine which is extremely lightweight and compact, making it preferable by most home knitters. There are various knit wears with interesting patterns can be made using this model. In the field of garments manufacturing by using flatbed knitting machines, it is important to understand the physical properties of fabric so that their impact on dimensional changes can be predicted to produce the most suitable end use. The samples were produced by using a blended bamboo/cotton yarn, with a composition of 30% cotton and 70% bamboo. The main objectives of this study are to to evaluate the physical properties of single jersey fabric knitted on home knitting machine by using different stitch dials and to relate the physical properties with different stitch lengths. Then, all tests were conducted to compare the physical properties of samples between three different stitch dials and the effects of before and after washing. The physical properties measured in this research were stitch length, stitch density, weight, thickness, absorbency and shrinkage. The result indicated that the longer the stitch length, the higher the percentage of the water impact penetration. Meanwhile, there was a slight reduction on the density, thickness and fabric weight. In addition, the result after three times washing showed that the samples only had slight changes in density, thickness, weight and stitch length, but has significant changes on the water impact penetration.
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