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A flat profiling fabric and its forming process

A molding process and fabric technology, applied in fabrics, multi-strand fabrics, textiles, etc., can solve problems such as uneven addition and subtraction of warp yarns, improve designability, solve equipment capacity limitations, and realize fabric structure diversification Effect

Active Publication Date: 2021-06-15
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a plane profiling fabric and its forming process to solve the problem of concentration of defects caused by uneven addition and subtraction of warp yarns in the forming of variable width plates and cone three-dimensional fabric preforms in the existing 2.5D weaving process technology

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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  • A flat profiling fabric and its forming process
  • A flat profiling fabric and its forming process
  • A flat profiling fabric and its forming process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The developed planar profiling fabric is conical, with a half-cone angle of 12°, a fabric height of 50mm, an outer diameter of the big end of 500mm, and a fabric equal wall thickness of 10mm. The process parameter design is shown in Table 1.

[0082] Table 1 Fabric process parameter table

[0083]

[0084]

[0085] The specific operation steps are as follows:

[0086] (1) Select the quartz fiber whose specification is 190Tex according to Figure 6 Arranged in a matrix as shown, one end of the quartz fiber is connected to the length-fixing device of common three-dimensional weaving equipment, or stored in a yarn storage device or pan head commonly used in textile equipment; the other end of the quartz fiber is fixed to the yarn fixing device.

[0087] (2) According to Figure 6 As shown, the warp yarns are arranged in 4 groups, respectively Z 1 ,Z 2 ,Z 3 ,Z 4 , each group of warp columns is 394 columns.

[0088] (3) After completing step (2), adjust the pos...

Embodiment 2

[0096] The developed planar profiling fabric is cylindrical, the fabric height is 100mm, the fabric outer diameter is 300mm, and the fabric equal wall thickness is 6mm. The process parameter design is shown in Table 2.

[0097] Table 2 fabric process parameter list

[0098]

[0099] The specific operation steps are as follows:

[0100] (1) Select carbon fiber with a specification of 198Tex according to Figure 8 Arranged in a matrix as shown, one end of the carbon fiber is connected to the length-fixing device of common three-dimensional weaving equipment, or stored in a yarn storage device or pan head commonly used in textile equipment; the other end of the quartz fiber is fixed to the yarn fixing device.

[0101] (2) According to Figure 8 As shown, the warp yarns are arranged in 4 groups, respectively Z 1 ,Z 2 ,Z 3 ,Z 4 .

[0102] (3) After completing step (2), adjust the position of the warp shedding device as follows: Figure 8 As shown, the odd column is 2 po...

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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Abstract

The invention discloses a plane profiling fabric and its molding process. The process comprises the following steps: Step 1: Decompose the plane profiling fabric into fabrics of n unit sleeves along the thickness direction, and the thickness of the n unit sleeves is respectively d 1 、d 2 ... d n , the total thickness of the plane profiled fabric D=d 1 +d 2 +...+d n ; Step 2: Carry out planar unfolding and profiling design of the fabric of each unit cover, and weave n unit cover fabrics by using a multi-piece molding method; Step 3: Put the n unit cover fabrics outside the mandrel in turn, Transformation into a three-dimensional form results in the planar profiled fabric. The present invention adopts the arrangement of warp yarns arranged side by side in groups and the reciprocating weft insertion method, which can realize the profiling weaving of large-size and large-diameter fabrics, solve the problem of equipment capacity limitations, and adopt the three-dimensional surface fabric flattening technology for design, with Planar profiling weaving is carried out offline, and mechanized production can be realized by borrowing existing common textile equipment, which has the advantages of high efficiency and low cost.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a plane profiling fabric and a molding process thereof. Background technique [0002] Composite materials have a series of advantages such as high specific strength, high specific modulus, high damage tolerance and fracture toughness, impact resistance, non-delamination and fatigue resistance, and are widely used in aviation, aerospace, nuclear industry, ships and other fields. Fiber reinforcement for composite materials is a key component of high-performance composite materials, which plays a role in increasing strength and improving performance in composite materials, and determines the comprehensive performance of composite materials to a large extent. [0003] The military powers represented by the United States, Russia, France, and the United Kingdom are actively carrying out research on high-performance composite materials, and the reinforcement materials of co...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D03C19/00D03D3/04D03D3/06D03D3/08D03D11/00D03D11/02D03D15/267D03D15/242D03D15/275D03D15/20D03D1/00
CPCD03C19/00D03D1/00D03D3/04D03D3/06D03D3/08D03D11/00D03D11/02D03D15/00
Inventor 赵谦朱梦蝶胡方田赵敬李小欢李丹丹房坤鹏
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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