• Journal of ILASS-Korea
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• v.8 no.2
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• pp.16-23
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• 2003

The Air-jet loom represents a major step in the development of shutterless weaving due to its ability to weave a wide range of yarns at high speeds. The Air-jet weaving involvers, inserting a pre-measured length of yam through the wrap, is sheds by meads of compressed air. The analysis of air flow characteristic of the main nozzle and acceleration tube is required for the loom performance. h this paper We examined the effect of the main nozzle with different acceleration tubes as well as diameters. And also, we compared the performance of straight type tube with laval type tube and of according to be suction hole on the acceleration tube, respectively.

• 한국기계연구소 소보
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• s.19
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• pp.171-180
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• 1989

The automation of textile machinery in the fabric manufacture is strongly demanded in order to improve the industrial structure related to labour-force and cost curtailment, in addition, to keep step with the various and small production system and the consumption tendency requesting a high quality fabrics. In this thesis, the technology applying the computer to an air jet loom and characteristics obtained from it are derived. To efficently apply an automized and unmanned textile machinery, an air jet loom is equipped with the let-off, take-up and weft insertion device attached a central processing unit(CPU) which can automatically operate according to a program. As a result, an air jet loom is available for the factory automation, which has advantages including productivity promotion, high quality security, energy savings, specification & variety, efficient production control, in fabric manufacturing process.

• Textile Coloration and Finishing
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• v.12 no.6
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• pp.337-343
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• 2000

In this study, the five harness satins are weaved in rapier loom and air-jet loom each using the pure wool Nm 2/72, also the physical characteristics of fabrics that are produced in these weaving machinery in same condition are measured by using the KES-FB system. The results of analysis and comparison on each fabric are presented by classifying items, that is to say, the tensile, bending properties. The results we as follows ; The extensibility of grey fabric woven by rapier in the weft direction is larger than that by air-jet loom. The variation of bending property of grey fabric woven by rapier in the weft direction is more irregular than that by air-jet loom. However, these properties are similar both rapier and air jet fabrics.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.34 no.9
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• pp.1235-1240
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• 2010

Wire-woven Bulk Kagome (WBK) is fabricated by assembling helically formed wires in six directions. To date, WBK samples have been assembled manually. For industrial application, the assembly process must be automated. Furthermore, if WBK is to be fabricated using flexible wires that cannot maintain their helical shape during fabrication, a specialized automatic machine, i.e., a loom needs to be developed. In this work, we designed and constructed a loom for fabricating WBKs using flexible wires. This loom is operated by one rotation of the upper plate, two translations of the insertion device, and insertion of wires. So-called "comb devices" are placed between multiple layers of Kagome nets to prevent the wires that are already in place from getting entangled with those that are being inserted. This loom can be also used to fabricate semi-WBKs composed of helically formed wires and rigid straight wires.

• 연구논문집
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• s.30
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• pp.101-110
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• 2000

Weft insertion mechanism is for completing the structure of yarn and weft yarn and its driving method is screw type. In the high speed rapier loom, weft yarn is thrown by insert rapier and carrier rapier into the shed which make divide two parts of upper part ant lower part for warp yarn. It is possible for this mechannism to reduce the size of rapier and wheel, and directly connected to the main shaft without gear belt. Therefore, exact rapier motion through realization of arbitrary acceleration diagram requested rapier and optimal design for high speedization and operating rate increasing are necessary. In this study, with a view to exact system analysis for understanding of overall trace and high speedization of rapier loom through computer simulation. we report not only deduction of displacement, velocity, and acceleration components of rapier for analysis theory establishment, of weft insertion mechanism and exact motion induction according to screw rotation, but also development of simulation program for realization these on the monitor.

• 제어로봇시스템학회:학술대회논문집
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• 1986.10a
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• pp.153-157
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• 1986

This paper describes the design of a monitoring system of automatic loom operation, which can provide valuable data for production and management by monitoring the operation of upto 512 looms.

• Archives of design research
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• v.15 no.1
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• pp.81-92
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• 2002

Through network draft, it′s possible to describe curve draft with main motive in a lobby loom and to fulfill draft design more conveniently thanks to the development of computer device. Network draft was introduced by Alice Schlein, who is an American weaving artist, and I had ever published research paper on "The unfolding and development of network draft using computer dobby system" . The purpose of the next study was to develop the design of network draft while do make a design network draft in a dobby loom with 16 shafts, and could reach follow conclusion as a result of designing a variety of drafts. The initial of 4-end in a loom with 16 shafts was a basic condition to describe more perfect shape in comparison with draft in 8 shafts through the development of network. The development of draft line was essential to deride the pattern of fabric, and the pattern of draft is decided according to selecting key peg plan. Thereby, could get a variety of draft patterns derive from mix key peg plan with initial selected by developing the kind of draft line and applying diverse key peg plan. As for the variation and diversification of draft line, the shape of patters varied depending col the curve extent and connectivity of draft line and the size of curve. The pattern of network draft can be changed infinitely by free round curve of draft line. In addition, a variety of draft designs shall be developed by increasing the number of shaft, enlarging the scale of draft line, and developing more creative draft line.

• Fashion & Textile Research Journal
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• v.12 no.3
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• pp.272-278
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• 2010

The purpose of this study was to research about Dobby weave design using Computer-Aided Weaving System. For performing this design study, first, it was researched the characteristics of the classified woven fabrics, weaving processing, structure of Dobby loom, and Computer-Aided Dobby Weaving system theoretically. To develop Dobby woven design, Patternland Weave Simulator(U.S.A) for computer weave system was used. Among the developed Dobby woven designs by computer weaving system, mainly three of them were selected and woven into Dobby loom. To see the visual image of the fabric end-use, some of the scanned Dobby fabrics were simulated to the three-dimensional virtual images by Alias CAD system. The result of this study can be summarized as follows. Before the step of weaving Dobby fabrics on the woven design works, Computer-Aided Weaving system can be done very easily to apply the design step of Dobby woven fabrics, specially in case of the complicated woven structure. Also the usage of the simulation CAD system in visual image of the final products, ultimately can be saved cost and developed the higher value-added goods in more response to consumer demands.

• Journal of the Korean Society of Costume
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• v.18
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• pp.97-110
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• 1992

West African's traditional looms, weaving and raw materials, structural patterning, dyeing and basic forms of dress were examines in the present study in order to deepen the appreciation of the cultural heritage of West Africa, and to make a contribution to the policy planning for export market developing The research method employed was the analysis f written materials. The study was limited to the traditional clothing habit which is preserved and practicing by them at the present day and the origin and the process of the historical development of those are not included in the scope of the present study. Followings are the results of the study: (1) They have vertical single-heddle loom horizontal or ground single-heddle loom, and double-heddle loom. The width of the cloth produced on the single-heddle loom varies about 38.5cm to 123cm and double-heddle looms all produced on the single-heddle looms all produced narrow strips of cloth varying in width from about 1.3cm to 75cm, although the average is about 10-20cm. (2) Despite the relative simplicity of the llom technology a remarkable variety of textiles are produced. (3) The most popular decorative technique in West African compound weaves is extra-weft patterning which is produced on both single-heddle and double-heddle loom by men and women weavers. Other forms of secondary patterning on textiles in West Africa are dyeing, applique, patchwork and embroidery. (4) Two basic forms of dress have spread throughout West Africa, the poncho (bpibpi) and the wrapper. Some versions of these basic forms are supplemented by western inspired trousers, shirts and blouses coupled with accessories usually complete their traditional outfits. They have a great variety of basic poncho, like as Khasa, Gandura, Tuareg-poncho, Babariga, Rigas (agba-da), Grand-boubou, Afteck, Tagua, buba, Danshike etc. Although West Africa has long been in contact with the peoples of the Nile region as well as the Maghreb and Sahara, both the boubou styles and the wrapper styles appear to have developed with a minimum of outside influence. African Islam was the principal agent for the diffusion of the boubou styles.

• Textile Coloration and Finishing
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• v.16 no.4
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• pp.26-35
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• 2004

This study surveys the tension differences between Korean domestic and foreign looms and analyses fabric mechanical properties due to warp and weft tension differences using KES-FB system. Paper is divided by two parts. In this 1st paper, fabric is designed as 5 harness satin weave using 75d/36f warp and 100d/192f weft polyester filaments, and is woven by $Omega^\circledR$ rapier loom by Textec Co.Ltd and Picanol$-GTX^\circledR$ rapier loom by Picanol Co.Ltd respectively. These grey fabrics are processed on the same dyeing and finishing processes. Weavability is also analysed by measuring warp tension variation according to the warp position, the relationship between shed amount and the warp tension on one fixed heald frame is surveyed, and the relationship between end breaks and warp and weft tensions is also discussed.