Weft insertion device and method for multilayer braided prefabricated body

A technology for weft insertion device and preform, which is applied in the directions of textile, loom, textile and paper making, etc., can solve the problems of low weaving efficiency of multi-layer woven preform and single-size weft insertion.

Active Publication Date: 2018-05-15
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a weft insertion device and a weft insertion method for a multi-layer woven prefabricated body, so as

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Weft insertion device and method for multilayer braided prefabricated body
  • Weft insertion device and method for multilayer braided prefabricated body
  • Weft insertion device and method for multilayer braided prefabricated body

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Experimental program
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Effect test

Embodiment 1

[0049] Such as Figure 1-6 As shown, a weft insertion device for a multi-layer braided prefabricated body includes a support, the support includes a base and a lifting device 1 arranged on the base, and a yarn storage mechanism is sequentially arranged on the lifting device 1 along the advancing direction of the weft insertion yarn bundle 8. Yarn selection mechanism 6, closing mechanism 7, cutting mechanism 5 and traction mechanism 2.

[0050] The traction mechanism includes a first motor and a rapier bracket fixed on the lifting device, a rigid rapier 3 is movably arranged on the rapier bracket, a first gear is arranged on the output shaft of the first motor, and the rigid rapier 3 A plurality of teeth are arranged on one side along its length direction to form a first rack, the first gear meshes with the first rack, and the first motor can drive the rigid rapier to reciprocate in the horizontal direction; the rapier bracket The end is provided with the first limit switch, a...

Embodiment 2

[0078] Flat multi-layer three-dimensional preforms (such as Figure 7 , 8 ) as an example, the multi-layer three-dimensional preform is designed to have a length of 500 mm, a width of 200 mm, and a thickness of 30 mm. It adopts a shallow cross-bend weaving structure, and the warp and weft yarns are designed to be T800 carbon fiber. The warp yarn specification is 24K×1 strand, and the density is 9 threads / cm; the weft yarn design has 6 specifications: specification 1 is 12K×1 strand, specification 2 is 12K× 2 strands, specification 3 is 12K×3 strands, specification 4 is 24K×1 strands, specification 5 is 24K×2 strands, specification 6 is 48K×1 strands, the total thickness of the weft yarn is 30 layers, and weft yarns of 6 specifications are staggered. The inter-layer distribution of specification weft yarns is shown in Table 1, and only three specifications of yarns need to be installed on the yarn storage device, and the yarn specifications on each yarn package are shown in Ta...

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Abstract

The invention discloses a weft insertion device and method for a multilayer braided prefabricated body. The weft insertion device comprises a support, the support comprises a base and a lifting devicearranged on the base, and a yarn storing mechanism, a yarn selecting mechanism, a merging mechanism, a cutting mechanism and a traction mechanism are arranged on the lifting device in sequence in theweft insertion yarn forward direction. A rapier is used for weft insertion, a tension detection and control mechanism is arranged on a spool, real-time monitoring and compensation on weft yarn tension are achieved, and by means of a yarn selector, automatic selection on yarns of different specifications can be achieved. According to the weft insertion method for the multilayer braided prefabricated body, the adopted device is simple in structure, small in occupied area and convenient to operate; when weft insertion is conducted, the mechanism movement is easy, weft insertion of high-thicknessbraided prefabricated body braiding can be achieved, and the braiding efficiency is significantly improved; meanwhile, online automatic yarn selection and merging can be achieved for the yarns of different specifications, and the braising quality is improved; the multilayer braided prefabricated body is high in structural design; the device and method are suitable for preparing platy prefabricated bodies with complex shapes.

Description

technical field [0001] The invention relates to a weft insertion device and a weft insertion method for a multi-layer woven preform, belonging to the field of weaving a multi-layer three-dimensional preform. Background technique [0002] Multi-layer three-dimensional preforms usually have high thickness, large size and complex shape. Due to the large number of preform layers and various weft yarn specifications, the weft insertion movement has become one of the technical keys of preform weaving and forming. Usually, the traditional multi-layer three-dimensional preform adopts three or more rapier alternate weft insertion motions and single rapier single specification movable weft insertion motion, among which the rapiers used for more than three rapier alternate weft insertion motions are distributed in the weaving On the same side of the prefabricated body, each rapier inserts weft yarns in a certain area. In this area, the rapiers sequentially introduce weft yarns from top...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D03D47/18D03D47/34D03D47/36
CPCD03D47/18D03D47/34D03D47/36
Inventor 赵谦宋坤张立泉李超郭洪伟
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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