CN109989150A - A three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft weight flat and weaving method thereof - Google Patents

Abstract

The invention discloses a three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft weight flat and a weaving method thereof. A warp cross-sectional structure cycle includes 2/2 weft flat region segments and plain weave and 2/2 weft flat region segments, the 2/2 weft flat region segments, viewed in warp section, consist of several layers of 2/2 The plain weave and the 2/2 weft-weight and flat combination area section is composed of two layers of upper and lower plain weave and several layers of 2/2 weft-weight and flat weave located between the plain weave from the warp section. The plain weave and the 2/2 weft weight and flat combined area segment are separated by the warp yarns of the 2/2 weft weight flat area to form warp yarns of various layers, a three-dimensional integral sandwich machine constructed by plain weave and 2/2 weft weight flat. The weaving method of the weaving structure is compiled according to the warp cross-sectional diagram into the upper machine pattern for weaving, the design method is simple and practical, and the weaving method is simple and feasible.

Description

A three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft rebalancing and its weaving method

【Technical field】

The invention relates to the technical field of three-dimensional integral weaving, in particular to the technical field of a three-dimensional integral sandwich weaving structure constructed by plain weave and 2/2 weft weight and a weaving method thereof.

【Background technique】

Lightweight is the development trend of composite materials in the future. The commonly used lightweight composite materials are mostly honeycomb sandwich structures and foam sandwich structures. The composite materials made of these sandwich structures have the advantages of light weight and strong performance, and their applications are mature. ,widely. However, the traditional sandwich structure composite materials are bonded to the panel and the core by means of bonding, so there is a problem that the panel and the core are easily detached. In addition, there are also three-dimensional structures such as orthogonal and quasi-orthogonal to form multi-layer hollow fabrics as reinforcements to form sandwich structure composite materials. Additional yarns are used for interlayer bonding. If an ordinary two-dimensional loom is used for weaving, additional yarns are also required for interlayer bonding, which limits the number of layers of the three-dimensional integral sandwich woven structure designed based on it (currently weaving three-dimensional Most of the integral sandwich woven fabrics use modified ordinary two-dimensional looms).

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and to propose a three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft weight and a weaving method thereof. The design method is simple and practical, the weaving method is simple and feasible, and can Effectively alleviate the contradiction between multi-layer structure design and existing weaving equipment.

To achieve the above object, the present invention realizes through the following technical solutions:

A three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft rebalancing, a warp cross-sectional structure cycle includes 2/2 weft rebalancing region segments and plain weave and 2/2 weft rebalancing region segments, so The 2/2 weft-heavy flat area section is composed of several layers of 2/2 weft-heavy flat weave from the warp section, and the plain weave and 2/2 weft-heavy flat area section is viewed from the warp section by two layers of upper and lower layers. The plain weave and several layers of 2/2 weft weave between the plain weave are constituted, and the plain weave and the 2/2 weft combined area segment are separated by the warp yarns of the 2/2 weft weave region to form each layer of weave the warp. The total number of layers of the 2/2 weft-weight flat area section is n, the total number of layers of the plain weave and 2/2 weft-weight flat area section is m, and the plain weave and 2/2 weft-weight flat combination area section Including n-1 layers of 2/2 weft weave and two layers of plain weave, m=n+1. The number of weft yarns in the 2/2 weft region and the plain weave and 2/2 weft combined region segment The number of weft yarns can be the same or different. The number of weft layers of 2/2 weft weight and the number of weft yarns in each area can be designed according to needs.

Preferably, the total number of layers of the 2/2 weft-heavy flat area segment is not greater than a quarter of the number of dobby heald frames.

A weaving method for a three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft weight, comprising the following steps:

a) Design the warp cross-sectional view of the three-dimensional integral core woven structure constructed by plain weave and 2/2 weft rebalancing, and divide a warp cross-sectional structure into 2/2 weft rebalancing area segments and plain weave and 2/2 2-weft-weight-flat combination area segment, each layer of the 2/2-weft-weight-flat area segment is composed of an independent 2/2-weft-weight-flat weave, and the plain weave and 2/2-weft-weight-flat combination area segment are composed of 2/2 The weft-weight flat area segment relies on its own warp yarns to separate and join to form two layers of plain weave and several layers of 2/2 weft-weight flat weave between the plain weave. Mark the 2/2 weft-weight flat area segment and the plain weave and 2/2 weave weave. The warp and weft yarns of each layer of the weft-weight flat combination area segment;

b) Determine the order of weft insertion according to actual needs;

c) compiling the meridional cross-sectional view in step a) into an upper machine pattern;

d) According to the difference in warp consumption, multi-warp weaving is used.

Preferably, the order of weft insertion in the step b) is from front to back, and the order of weft insertion of each part is one per layer, one by one.

Beneficial effects of the present invention:

A warp cross-sectional structure cycle is formed by a 2/2 weft flat area segment and a combined plain weave and 2/2 weft flat area segment, and the plain weave and 2/2 weft are formed by the warp separation of the 2/2 weft flat area segment. The warp yarns of each layer of weave in the combined area are re-flattened to form a three-dimensional overall structure. The weave structure is simple, and there is no additional binding yarn. It can be weaved at one time on the loom, which can effectively alleviate the multi-layer structure design and existing weaving equipment. According to the fineness and density of the yarn used, the required thickness can be converted into the number of layers in the corresponding area segment, and the length can be converted into the number of weft yarns in the corresponding area segment.

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is a warp sectional view of a three-dimensional integral sandwich woven structure constructed by plain weave and 2/2 weft weight of the present invention;

Fig. 2 is the meridional sectional view of embodiment one;

Fig. 3 is the upper machine pattern board diagram of embodiment one;

Fig. 4 is the meridional sectional view of embodiment two;

FIG. 5 is a drawing of the upper machine pattern of the second embodiment.

In the picture: A-2/2 latitude re-levelling area segment;

B-plain and 2/2 weft re-flat combined area segment;

The total number of layers of the n-2/2 latitude and flat area segments;

The total number of layers of m-plain weave and 2/2 weft-weight flat combined area segment;

1, 2, 3, 4... - warp;

①, ②, ③, ④... - weft;

【Detailed ways】

Example 1:

First, design the warp cross-sectional view of the three-dimensional integral core woven structure constructed by plain weave and 2/2 weft rebalancing, and divide a warp cross-sectional structure into 2/2 weft rebalancing area segment A and plain weave and 2 /2 weft-weight flat combined area segment B, each layer of the 2/2 weft-weight flat area segment A is composed of an independent 2/2 weft-weight flat weave, the plain weave and 2/2 weft-weight flat combination area segment B Two layers of plain weave and several layers of 2/2 weft weave between the plain weave are formed from the 2/2 weft flat area segment A by its own warp yarn separation and binding. Let the number of weft yarns in a single layer of the 2/2 weft re-flattening area A be 6, the total number of layers n of the 2/2 weft re-flattening area A is 1, and the combined area section B of the plain weave and 2/2 weft re-flattening area consists of two layers Plain weave structure, the number of weft yarns involved in the interweaving of each layer is 8, the warp yarns of each layer are represented by Arabic numerals, and the weft yarns are represented by ○.

Referring to Fig. 2, in the alternating part of the 2/2 weft flat area section A and plain weave and the 2/2 weft heavy flat area section B, the 2/2 weft flat area section A relies on the separation of its own warp yarns to form a three-dimensional overall structure. Then, the meridional cross-sectional view in step a) is compiled into an upper machine pattern, with reference to FIG. 3 . Finally, according to the difference in warp consumption, multi-warp weaving is used to complete

Embodiment 2:

Referring to Fig. 4 and Fig. 5, the number of weft yarns in a single layer of the 2/2 weft leveling area section A is 6, the total number of layers n of the 2/2 weft leveling area section A is 2, and the plain weave and 2/2 weft leveling are combined. The area section B is composed of two layers of plain weave and a layer of 2/2 weft heavy flat weave in the middle, and the number of weft yarns involved in the interweaving of each layer is 8. Others are the same as in Embodiment 1.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (4)

1. a kind of three-dimensional integrated cellular woven structure constructed by plain weave and 2/2 latitude galassing, it is characterised in that: one through to cutting Face structured loop includes 2/2 latitude galassing area segments and plain weave and 2/2 latitude galassing combination zone section, the 2/2 latitude galassing region Section is made of from warp cross section 2/2 weft rib weave of several layers, the plain weave and 2/2 latitude galassing combination zone Duan Congjing to See that 2/2 weft rib weave of several layers by upper layer and lower layer plain weave and between plain weave is constituted on section, it is described Plain weave and 2/2 latitude galassing combination zone section rely on the 2/2 latitude galassing area segments warp thread to separate the warp thread to form each layer tissue.

2. a kind of three-dimensional integrated cellular woven structure constructed by plain weave and 2/2 latitude galassing as described in claim 1, special Sign is: total number of plies of the 2/2 latitude galassing area segments is not more than a quarter of dobbies heald frame number.

3. a kind of method for weaving of the three-dimensional integrated cellular woven structure constructed by plain weave and 2/2 latitude galassing, it is characterised in that Include the following steps:

A) the warp cross section figure for the three-dimensional integrated cellular woven structure that design is constructed by plain weave and 2/2 latitude galassing, one is passed through It is 2/2 latitude galassing area segments and plain weave and 2/2 latitude galassing combination zone section, the 2/2 latitude weight to cross section structure circulating section Every layer of flat area segments is made of independent 2/2 weft rib weave, and the plain weave and 2/2 latitude galassing combination zone section are by 2/2 latitude Galassing area segments form upper layer and lower layer plain weave and several between plain weave by itself warp thread separation binding 2/2 weft rib weave of layer, marks out each layer warp thread of 2/2 latitude galassing area segments and plain weave and 2/2 latitude galassing combination zone section And weft yarn；

B) wefting insertion order determine according to actual needs；

C) by the warp cross section schema compiler Cheng Shangji pegging plan in step a)；

D) it according to warp thread consumption difference, is weaved and is completed using more warp beams.

4. a kind of three-dimensional integrated cellular woven structure constructed by plain weave with 2/2 latitude galassing as claimed in claim 3 is knitted Make method, it is characterised in that: the wefting insertion order in the step b) is that from front to back, the wefting insertion order of each section is every layer one Root, one by one wefting insertion.