CN110318140B - Weaving method for realizing integrated weaving of unequal-layer fabrics by four-step method - Google Patents
Weaving method for realizing integrated weaving of unequal-layer fabrics by four-step method Download PDFInfo
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- CN110318140B CN110318140B CN201910365887.7A CN201910365887A CN110318140B CN 110318140 B CN110318140 B CN 110318140B CN 201910365887 A CN201910365887 A CN 201910365887A CN 110318140 B CN110318140 B CN 110318140B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
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Abstract
The invention discloses a weaving method for realizing the integrated weaving of unequal-layer fabrics by a four-step method, in a weaving array of the four-step method, the number of rows is recorded as m, the number of columns is recorded as n,the four-step three-dimensional woven preform is represented as "four-step m × n weaving", four-step m × n weaving1And m × n2Knitting i.e. n1And n2The layer fabric is integrally woven by a four-step method, and n1≠n2. The method has flexible and various knitting forms, simple preparation process and easy realization, and can ensure the interlayer performance of the knitted prefabricated body.
Description
Technical Field
The invention belongs to the technical field of three-dimensional weaving, and relates to a weaving method for three-dimensional weaving of unequal-layer fabrics, in particular to a weaving method for weaving unequal-layer fabrics by a four-step method.
Background
Compared with the traditional material, the three-dimensional braided structure composite material has the characteristics of high specific strength, light weight, high specific rigidity, corrosion resistance, material designability and the like, so that the three-dimensional braided structure composite material is widely applied to a plurality of high-technology fields of aerospace, weapon industry, bioengineering, building materials, transportation and the like. The three-dimensional braided structure composite material is prepared by weaving fiber bundles into a preform according to a certain space structure, and then solidifying the preform and a matrix to form the composite material. The three-dimensional knitted prefabricated member is a high and new textile technology product which is developed in the early seventies of the twentieth century and is mainly used as a composite material reinforcement or framework. The three-dimensional woven composite material taking the three-dimensional fabric as the reinforcement well overcomes the defects of poor interlayer binding force and easy delamination damage of the composite material of the laminated plate. The three-dimensional woven prefabricated member has good structural integrity and is not layered, so the three-dimensional woven prefabricated member is a novel woven product in the special fields of military industry, national defense, aerospace and civil use.
The four-step method three-dimensional woven fabric is the most common woven structure, and is based on the four-step method weaving technology, fiber bundles are mutually wound according to a certain rule to form a space net-shaped structure with a plurality of direction fiber bundles alternately inserted and staggered, the concept of 'layer' is eliminated, and the defects that other structures are poor in strength and modulus performance in the thickness direction, low in interlayer shear strength and damage tolerance level and the like are thoroughly overcome. Meanwhile, the four-step three-dimensional weaving technology has excellent adaptability, and not only can weave fabrics with conventional structures such as rectangular and tubular sections, but also can weave fabrics with special sections such as T-shaped beams, L-shaped beams or I-shaped beams, and the like, even fabrics with variable sections.
However, the existing four-step method knitting technology only aims at the equal-layer fabric knitting, can only meet the requirement of a single knitting style, and is not flexible.
Disclosure of Invention
The invention aims to provide a weaving method for realizing the integrated weaving of unequal-layer fabrics by a four-step method, and solves the problems of single weaving form and inflexibility of the existing four-step method.
The purpose of the invention can be realized by adopting the following technical scheme:
a weaving method for realizing the integrated weaving of the unequal-layer fabrics by the four-step method is characterized in that in a weaving array of the four-step method, the number of rows is recorded as m, the number of columns is recorded as n, and a three-dimensional weaving prefabricated member by the four-step method is expressed as'm × n weaving ' by the four-step method, and m × n weaving ' by the four-step method1And m × n2Knitting i.e. n1And n2The layer fabric is integrally woven by a four-step method, and n1≠n2The method comprises the following specific operation steps:
first step, m × n1Knitting i.e. knitting n1Odd rows of the fabric layer are moved by a step distance in the Y direction and even rows are moved by a step distance in the reverse direction, the last row being stationary, while m × n2Knitting i.e. n2The layer even number row moves a step distance along the Y direction, the odd number row moves a step distance in the reverse direction, and the first row is fixed;
second step, m × n1Knitting i.e. knitting n1The even rows of the layer fabric move a step distance in the X direction and the odd rows move a step distance in the reverse direction, while m × n2Knitting i.e. n2The even lines of the layer move a stepping distance along the X direction, and the odd lines move a stepping distance in the reverse direction; at this time n1And n2The first row and the last row are fixed during layer weaving;
thirdly, n is added2The yarn on the last yarn carrying bar in the first row of the layer weaving is transferred to n1The last vacant position of the last row of the layer weaving carries the yarn pole; sequentially adding n1The last row of layer knitting is transferred to n along the yarn on the yarn carrying rod at a position spaced from the empty position2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be2First row of layer weavesThe yarn on the yarn-carrying bar is transferred to n1The last line of yarn changing and carrying rods for layer weaving; n is to be1The yarn on the second yarn-carrying bar in the last row of the layer knitting is transferred to n2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be1The yarn on the first yarn-carrying rod in the last row of layer knitting is transferred to n1The last line of yarn changing and carrying rods for layer weaving;
fourth step, m × n1Knitting i.e. knitting n1The even rows of the fabric layer are moved by a step distance in the Y direction and the odd rows are moved by a step distance in the reverse direction, the last row being stationary, while m × n2Knitting i.e. n2The odd-numbered columns of the layer move a step distance along the Y direction, the even-numbered columns move a step distance in the reverse direction, and the first column is fixed;
fifth step, m × n1Knitting i.e. knitting n1The odd rows of the layer fabric move a step distance in the X direction and the even rows move a step distance in the reverse direction, and m × n2Knitting i.e. n2The odd rows of the layer move a step distance in the X direction and the even rows move a step distance in the reverse direction, where n1And n2The first row and the last row are fixed during layer weaving;
a sixth step of adding n2The yarns of the first yarn-carrying bar of the first row of the layer weave are transferred to n1The last row of the first vacant position yarn carrying rods in the layer weaving process; sequentially adding n1The last row of layer knitting is transferred to n along the yarn on the yarn carrying rod at a position spaced from the empty position2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be2The yarn on the last yarn carrying bar in the first row of the layer weaving is transferred to n1The last line of yarn changing and carrying rods for layer weaving; n is to be1The yarn on the last penultimate yarn carrying rod in the layer weaving is transferred to n2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be1The yarn on the last yarn-carrying bar in the last row of the layer knitting is transferred to n1The last line of yarn changing and carrying rods for layer weaving;
and seventhly, after the yarns are changed, the original position is recovered, and the 6 steps are repeated, and the tightening movement and the fabric output movement are added to finish the weaving process.
As a preferred technical scheme, n1 is 9 layers of fabrics, n2 is 5 layers of fabrics, and the method comprises the following specific operation steps:
step one, respectively moving a step distance downwards in a 1 st row and a 3 rd row of 9 layers of fabrics, moving a step distance upwards in a 2 nd row, and keeping a 4 th row unchanged; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move downwards by a step distance respectively, the 3 rd row moves upwards by a step distance, and the 1 st row is fixed;
secondly, respectively moving the 2 nd, 4 th, 6 th and 8 th rows of the 9 layers of fabrics to the right by a step distance, and respectively moving the 3 rd, 5 th, 7 th and 9 th rows of fabrics to the left by a step distance; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move rightwards respectively by a step distance, the 3 rd row and the 5 th row move leftwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
thirdly, after moving in the transverse direction, transferring the yarns at the 2 position of the 5-layer weaving to the 1 position of the 9-layer weaving; sequentially transferring the yarns at the 3 position of the 9-layer knitting to the 2 position of the 5-layer knitting; transferring the yarns at the 4 positions on the 5 layers of knitting to the 3 positions on the 9 layers of knitting; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
fourthly, respectively moving the 1 st row and the 3 rd row of the 9 layers of fabrics upwards by a step distance, moving the 2 nd row downwards by a step distance, and keeping the 4 th row still; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move upwards by a step distance respectively, the 3 rd row moves downwards by a step distance, and the 1 st row is fixed;
fifthly, respectively moving the 2 nd, 4 th, 6 th and 8 th rows of the 9-layer fabric to the left by a step distance, and respectively moving the 3 rd, 5 th, 7 th and 9 th rows of the 9-layer fabric to the right by a step distance; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move leftwards respectively by a step distance, the 3 rd row and the 5 th row move rightwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
sixthly, after moving in the transverse direction, transferring the yarns at the 2 position of 5-layer weaving to the 1 position of 9-layer weaving; sequentially transferring the yarns at the position 3 of the 9 layers of knitting to the position 2 of the 5 layers of knitting; transferring the yarns in the 4 positions of the 5-layer weaving to the 3 positions of the 9-layer weaving; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
and seventhly, after the yarns are changed, the position is recovered, and the weaving process is completed by repeating the 6 steps and tightening movement and fabric output movement.
The invention has the beneficial effects that:
the method has flexible and various knitting forms, simple preparation process and easy realization, and can ensure the interlayer performance of the knitted prefabricated body.
Drawings
FIG. 1 is a schematic diagram of a weaving process according to step one of the method of the present invention.
FIG. 2 is a schematic diagram of a weaving process in step two of the method of the present invention.
FIG. 3 is a schematic diagram of the weaving process in step three of the method of the present invention.
FIG. 4 is a schematic diagram of a weaving process in step four of the method of the present invention.
FIG. 5 is a schematic diagram of a knitting process in step five of the method of the present invention.
FIG. 6 is a schematic diagram of the six steps of the weaving process of the present invention.
Fig. 7 is a schematic diagram of a seven-step weaving structure of the method of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and the detailed description
The invention relates to a weaving method for realizing integration of four-step method unequal-layer fabrics, wherein the motion rule of yarns in the weaving process (taking weaving of 9 layers of fabrics and 5 layers of fabrics as an example) is as follows:
as shown in fig. 1, column 1 and column 3 of the 9-layer fabric were each moved downward a step distance, column 2 was moved upward a step distance, and column 4 was stationary; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move downwards by a step distance respectively, the 3 rd row moves upwards by a step distance, and the 1 st row is fixed;
as shown in fig. 2, lines 2, 4, 6, and 8 of the 9-layer fabric are each moved a step distance to the right, and lines 3, 5, 7, and 9 are each moved a step distance to the left; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move rightwards respectively by a step distance, the 3 rd row and the 5 th row move leftwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
as shown in fig. 3, after moving in the transverse direction, the yarns in the 2 position of the 5-layer weave are transferred to the 1 position of the 9-layer weave; sequentially transferring the yarns at the 3 position of the 9-layer knitting to the 2 position of the 5-layer knitting; transferring the yarns at the 4 positions on the 5 layers of knitting to the 3 positions on the 9 layers of knitting; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
as shown in fig. 4, row 1 and row 3 of 9 layers of fabric were each moved up a step distance, row 2 was moved down a step distance, and row 4 was stationary; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move upwards by a step distance respectively, the 3 rd row moves downwards by a step distance, and the 1 st row is fixed;
as shown in fig. 5, lines 2, 4, 6, and 8 of the 9-layer fabric are each moved a step distance to the left, and lines 3, 5, 7, and 9 are each moved a step distance to the right; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move leftwards respectively by a step distance, the 3 rd row and the 5 th row move rightwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
as shown in fig. 6, after the transverse movement, the yarns in the 2 position of the 5-layer weave are transferred to the 1 position of the 9-layer weave; sequentially transferring the yarns at the position 3 of the 9 layers of knitting to the position 2 of the 5 layers of knitting; transferring the yarns in the 4 positions of the 5-layer weaving to the 3 positions of the 9-layer weaving; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
as shown in fig. 7, the position is restored after the yarn change. The weaving process can be completed by continuously repeating the 6 steps and the tightening movement and the fabric output movement.
The method has flexible and various knitting forms, simple preparation process and easy realization, and can ensure the interlayer performance of the knitted prefabricated body.
Claims (2)
1. A weaving method for realizing the integrated weaving of the four-step method unequal-layer fabric is characterized in that in a four-step method weaving array, the number of rows is recorded as m, the number of columns is recorded as n, and a four-step method three-dimensional weaving prefabricated member is expressed as 'four-step method m × n weaving', four-step method m × n weaving1And m × n2Knitting i.e. n1And n2The layer fabric is integrally woven by a four-step method, and n1≠n2The method comprises the following specific operation steps:
first step, m × n1Knitting i.e. knitting n1Odd rows of the fabric layer are moved by a step distance in the Y direction and even rows are moved by a step distance in the reverse direction, the last row being stationary, while m × n2Knitting i.e. n2The layer even number row moves a step distance along the Y direction, the odd number row moves a step distance in the reverse direction, and the first row is fixed;
second step, m × n1Knitting i.e. knitting n1The even rows of the layer fabric move a step distance in the X direction and the odd rows move a step distance in the reverse direction, while m × n2Knitting i.e. n2The even lines of the layer move a stepping distance along the X direction, and the odd lines move a stepping distance in the reverse direction; at this time n1And n2The first row and the last row are fixed during layer weaving;
thirdly, n is added2The yarn on the last yarn carrying bar in the first row of the layer weaving is transferred to n1The last vacant position of the last row of the layer weaving carries the yarn pole; sequentially adding n1The last row of layer knitting is transferred to n along the yarn on the yarn carrying rod at a position spaced from the empty position2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be2The yarns of the first yarn-carrying bar of the first row of the layer weave are transferred to n1The last line of yarn changing and carrying rods for layer weaving; n is to be1The yarn on the second yarn-carrying bar in the last row of the layer knitting is transferred to n2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be1The yarn on the first yarn-carrying rod in the last row of layer knitting is transferred to n1By weaving layersThe last line of yarn changing and carrying rods;
fourth step, m × n1Knitting i.e. knitting n1The even rows of the fabric layer are moved by a step distance in the Y direction and the odd rows are moved by a step distance in the reverse direction, the last row being stationary, while m × n2Knitting i.e. n2The odd-numbered columns of the layer move a step distance along the Y direction, the even-numbered columns move a step distance in the reverse direction, and the first column is fixed;
fifth step, m × n1Knitting i.e. knitting n1The odd rows of the layer fabric move a step distance in the X direction and the even rows move a step distance in the reverse direction, and m × n2Knitting i.e. n2The odd rows of the layer move a step distance in the X direction and the even rows move a step distance in the reverse direction, where n1And n2The first row and the last row are fixed during layer weaving;
a sixth step of adding n2The yarns of the first yarn-carrying bar of the first row of the layer weave are transferred to n1The last row of the first vacant position yarn carrying rods in the layer weaving process; sequentially adding n1The last row of layer knitting is transferred to n along the yarn on the yarn carrying rod at a position spaced from the empty position2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be2The yarn on the last yarn carrying bar in the first row of the layer weaving is transferred to n1The last line of yarn changing and carrying rods for layer weaving; n is to be1The yarn on the last penultimate yarn carrying rod in the layer weaving is transferred to n2Weaving a first row of yarn changing and carrying rods layer by layer; n is to be1The yarn on the last yarn-carrying bar in the last row of the layer knitting is transferred to n1The last line of yarn changing and carrying rods for layer weaving;
and seventhly, after the yarns are changed, the original position is recovered, and the 6 steps are repeated, and the tightening movement and the fabric output movement are added to finish the weaving process.
2. Weaving method according to claim 1, characterized in that n1 is a 9-layer fabric and n2 is a 5-layer fabric, the method being carried out in particular by:
step one, respectively moving a step distance downwards in a 1 st row and a 3 rd row of 9 layers of fabrics, moving a step distance upwards in a 2 nd row, and keeping a 4 th row unchanged; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move downwards by a step distance respectively, the 3 rd row moves upwards by a step distance, and the 1 st row is fixed;
secondly, respectively moving the 2 nd, 4 th, 6 th and 8 th rows of the 9 layers of fabrics to the right by a step distance, and respectively moving the 3 rd, 5 th, 7 th and 9 th rows of fabrics to the left by a step distance; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move rightwards respectively by a step distance, the 3 rd row and the 5 th row move leftwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
thirdly, after moving in the transverse direction, transferring the yarns at the 2 position of the 5-layer weaving to the 1 position of the 9-layer weaving; sequentially transferring the yarns at the 3 position of the 9-layer knitting to the 2 position of the 5-layer knitting; transferring the yarns at the 4 positions on the 5 layers of knitting to the 3 positions on the 9 layers of knitting; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
fourthly, respectively moving the 1 st row and the 3 rd row of the 9 layers of fabrics upwards by a step distance, moving the 2 nd row downwards by a step distance, and keeping the 4 th row still; simultaneously, the 2 nd row and the 4 th row of the 5-layer fabric move upwards by a step distance respectively, the 3 rd row moves downwards by a step distance, and the 1 st row is fixed;
fifthly, respectively moving the 2 nd, 4 th, 6 th and 8 th rows of the 9-layer fabric to the left by a step distance, and respectively moving the 3 rd, 5 th, 7 th and 9 th rows of the 9-layer fabric to the right by a step distance; simultaneously, the 2 nd row and the 4 th row of the 5 layers of fabrics move leftwards respectively by a step distance, the 3 rd row and the 5 th row move rightwards respectively by a step distance, and the first row and the last row are fixed when the 9 layers and the 5 layers are woven;
sixthly, after moving in the transverse direction, transferring the yarns at the 2 position of 5-layer weaving to the 1 position of 9-layer weaving; sequentially transferring the yarns at the position 3 of the 9 layers of knitting to the position 2 of the 5 layers of knitting; transferring the yarns in the 4 positions of the 5-layer weaving to the 3 positions of the 9-layer weaving; transferring the yarns at the 5 position of the 9-layer knitting to the 4 position of the 5-layer knitting; transferring the yarns at the 6 position of the 9-layer weaving to the 5 position of the 9-layer weaving;
and seventhly, after the yarns are changed, the original position is recovered, and the 6 steps are repeated, and the tightening movement and the fabric output movement are added to finish the weaving process.
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| US20160305050A1 (en) * | 2015-04-16 | 2016-10-20 | The Secant Group, Llc | Woven textile and method for making a woven textile |
| EP3121317B1 (en) * | 2015-07-23 | 2021-01-06 | STÄUBLI BAYREUTH GmbH | Method for weaving a fabric, near-net shape fabric woven via such a method and weaving loom for implementing this method |
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Address after: 214200 Fangqiao Street industrial concentration area, Yixing City, Wuxi City, Jiangsu Province Patentee after: YIXING XINLI WEAVING Co.,Ltd. Address before: 214212 Dajian village, Wanshi Town, Yixing City, Wuxi City, Jiangsu Province Patentee before: YIXING XINLI WEAVING Co.,Ltd. |