CN109537137B - 2.5D profiling woven sleeve and weaving method thereof - Google Patents
2.5D profiling woven sleeve and weaving method thereof Download PDFInfo
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- CN109537137B CN109537137B CN201811607016.3A CN201811607016A CN109537137B CN 109537137 B CN109537137 B CN 109537137B CN 201811607016 A CN201811607016 A CN 201811607016A CN 109537137 B CN109537137 B CN 109537137B
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- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
Abstract
The invention discloses a 2.5D profiling woven sleeve and a weaving method thereof, wherein the warp arrangement method of the woven sleeve is a gradient yarn distribution process, namely after the main warp is distributed, two rows of edge warps are respectively distributed in a gradient decreasing mode from the middle to two edges of the main warp, the edge warps are decreased gradually from an inner layer to an outer layer, the 2.5D cylindrical or conical profiling woven sleeve is prepared by utilizing the gradient yarn distribution process, no gap exists between an upper piece and a lower piece of the prepared woven sleeve, and no uneven phenomenon exists.
Description
Technical Field
The invention relates to the technical field of 2.5D stereoscopic weaving, in particular to a 2.5D profiling woven sleeve and a weaving method thereof.
Background
2.5D weaving is a novel weaving process technology developed in recent years, has the advantages of good large-scale production capacity, relatively simple structural design, relatively stable manufacturing technology and the like, and is a novel composite material structure which is promising at present. The 2.5D textile prepared preformed fabric has good structural integrity, thereby being beneficial to improving the performance of the composite material, endowing the composite material with excellent interlaminar shear strength, excellent impact damage resistance, proper toughness and higher specific strength and specific modulus, and being capable of weaving fabrics with different profiles according to requirements.
The uniform cross-section or variable cross-section tubular fabric has wide application, can be used for conveying gas and liquid to manufacture dust filtering belts in modern industry, and can also be used as a reinforcing material of a composite material, the variable cross-section tubular fabric is a preformed fabric, can be used as pipelines and pipeline connecting pieces with different diameters and different thicknesses, and can also be used for manufacturing other parts: such as the nozzle of an engine, the bullet skin of a missile, a cover body and the like.
In the prior art, when a tubular fabric is woven by a circular weaving machine, gaps and unevenness exist on two sides of the woven tubular fabric, and the use performance of the fabric is reduced.
Disclosure of Invention
The invention aims to provide a 2.5D profiling woven sleeve and a weaving method thereof, which can eliminate gaps and unevenness on two sides of a fabric when the cylindrical or conical woven sleeve is manufactured by the method.
The technical scheme adopted by the invention is as follows:
A2.5D profiling woven sleeve is composed of an upper piece and a lower piece, m is the total number of layers of fabric warp yarns, and m/2 layers of warp yarns contribute to the thickness of the fabric; n is the total row number of the fabric warp yarns, and n/2 rows of warp yarns contribute to the width of the fabric; m is an even number greater than or equal to 2, determined by the total thickness of the fabric warp yarns; n is a positive integer greater than 1, determined by the total number of rows of fabric warp yarns; the method for arranging the warp yarns of the woven sleeve is characterized by comprising the following steps of:
1) main warp yarns are arranged in an upper piece and a lower piece in a matrix mode, and more than 2 heddle eyes are arranged in the upper piece and the lower piece at intervals;
2) after the main body warp yarns are arranged, two rows of edge warp yarns are arranged in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, and the edge warp yarns decrease gradually from the inner layer to the outer layer.
Furthermore, the edge warps are arranged in m/2+1 rows, and gradually decrease from the inner layer to the outer layer in a group of two rows.
Gradient cloth yarn arrangement is added on two sides of the main warp. In the weaving process, no matter whether the warp yarns are attenuated or not, the arrangement of the gradient warp yarns is unchanged, and the arrangement of the gradient warp yarns effectively avoids the phenomena of gaps and unevenness on two sides of the fabric formed by spiral weft insertion in the weaving process.
A weaving method of a 2.5D cylindrical profiling woven sleeve comprises the following steps connected in sequence:
3.1) determining the total column number n of the fabric warp yarns according to the perimeter of the fabric, and determining the total layer number m of the fabric warp yarns according to the thickness of the fabric;
3.2) main body warp arrangement: main warp yarns are arranged in matrix in an upper piece and a lower piece, and the upper piece and the lower piece are separated by 2 or more than 2 heddle eyes;
3.3) edge warp yarn arrangement: after the main body warp yarns are arranged, arranging edge warp yarns in two rows and one group in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, wherein the edge warp yarns decrease gradually from the inner layer to the outer layer;
3.4) spiral weft insertion: setting the heald frames where odd-numbered rows of warp yarns are positioned as front heald frames, and setting the heald frames where even-numbered rows of warp yarns are positioned as rear heald frames; the positions of the front and rear heald frames are in a parallel and level state in an initial state, the positions of the front and rear heald frames are correspondingly adjusted according to different weaving structures during weft insertion, when the heald frames move to a warp yarn to form a certain opening angle, the first weft is spirally introduced from the outer layer to the inner layer, the second weft is spirally introduced from the inner layer to the outer layer, the third weft is spirally introduced from the outer layer to the inner layer, the circular introduction and the extraction are sequentially carried out, the weft insertion is completed, and the weaving of the 2.5D woven cylinder is completed.
Further, the braided structure of the 2.5D cylindrical profiling woven sleeve comprises shallow cross-bending connection or shallow cross-straight connection.
The 2.5D cylindrical profiling woven sleeve is prepared by utilizing a gradient cloth warp yarn mode, no gap exists between an upper sheet and a lower sheet of the prepared woven sleeve, and the phenomenon of nonuniformity does not exist.
A weaving method of a 2.5D conical profiling woven sleeve, comprising the following steps connected in sequence:
5.1) determining the total column number n of the fabric warp yarns according to the perimeter of the fabric, and determining the total layer number m of the fabric warp yarns according to the thickness of the fabric;
5.2) main body warp arrangement: main warp yarns are arranged in matrix in an upper piece and a lower piece, and the upper piece and the lower piece are separated by 2 or more than 2 heddle eyes;
5.3) edge warp yarn arrangement: after the main body warp yarns are arranged, arranging edge warp yarns in two rows and one group in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, wherein the edge warp yarns decrease gradually from the inner layer to the outer layer;
5.4) spiral weft insertion: setting the heald frames where odd-numbered rows of warp yarns are positioned as front heald frames, and setting the heald frames where even-numbered rows of warp yarns are positioned as rear heald frames; the positions of the front and rear heald frames are in a parallel and level state in an initial state, the positions of the front and rear heald frames are correspondingly adjusted according to different weaving structures during weft insertion, when the heald frames move to a certain opening angle of warp yarns, a first weft is spirally introduced from an outer layer to an inner layer, a second weft is spirally introduced from the inner layer to the outer layer, a third weft is spirally introduced from the outer layer to the inner layer, the third weft is sequentially and circularly introduced and extracted to complete weft insertion, and main warp yarns are attenuated according to the change of the fabric width during the weft insertion;
5.5) beating-up: and after the main body warp is attenuated, the reed is pushed along the main body warp direction with certain assistance, so that the weft density is kept consistent, and the weaving of the 2.5D woven cone is completed.
Further, the first weft of the 2.5D conical profiling woven sleeve does not attenuate warp yarns, the second weft attenuates corresponding number of warp yarns in the middle, the third weft does not attenuate warp yarns, and the fourth weft attenuates corresponding number of warp yarns in the middle, and the weaving and weaving are sequentially circulated.
Further, the edge warp yarns of the 2.5D conical profiling woven sleeve are arranged in m/2+1 rows, and gradually decrease from the inner layer to the outer layer in a group of two rows.
Further, the knitting structure of the 2.5D conical profiling woven sleeve comprises shallow cross-linking or shallow cross-linking.
The 2.5D conical profiling woven sleeve is prepared by utilizing a gradient cloth warp yarn mode, no gap exists between an upper sheet and a lower sheet of the prepared woven sleeve, and the phenomenon of nonuniformity does not exist.
The invention has the beneficial effects that: the method of adopting gradient cloth warp yarns can be applied to weaving any 2.5D variable-section or equal-variable-section tubular fabric, and no gap and no unevenness exist between the upper and lower pieces of the prepared woven sleeve.
Drawings
Fig. 1 is a schematic view of gradient cloth yarn of a cylindrical woven sleeve of embodiment 1 of the present invention.
Fig. 2 is a warp yarn diagram for the front heald frame higher than the rear heald frame of the cylindrical woven cover according to embodiment 1 of the present invention.
Figure 3 is a warp yarn diagram for the rear heald frame to be higher than the front heald frame of the cylindrical woven cover according to embodiment 1 of the present invention.
Fig. 4 is a schematic view of the gradient cloth yarn of the conical woven sleeve of embodiment 3 of the present invention.
Figure 5 is a warp yarn diagram for a conical woven jacket embodiment 3 of the present invention with the front heddle frame higher than the rear heddle frame.
Figure 6 is a warp yarn diagram for a conical woven jacket embodiment 3 of the present invention with the rear heald frame higher than the front heald frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and preferred embodiments.
Embodiment mode 1
A2.5D cylindrical profiling woven sleeve is prepared by a gradient cloth warp yarn mode. The cylindrical copying woven sleeve adopts 480Tex multiplied by 1 strand high-strength glass fiber as warp yarn and 480Tex multiplied by 1 strand high-strength glass fiber as weft yarn, the theoretical thickness of the cylindrical copying woven sleeve is 3mm, the diameter of the cylinder is 70mm, the length of the cylindrical copying woven sleeve is 200mm, and the diameter of the cylindrical copying woven sleeve is equal in the length direction. The fabric structure is a 2.5D woven shallow cross-linking structure, the warp density of the fabric is 9 pieces/cm, and the weft density of the fabric is 3.3 pieces/cm.
The weaving method of the woven sleeve comprises the following steps:
the method comprises the following steps that firstly, the total column number n of fabric warp yarns is determined to be 200 according to the perimeter of a fabric, and the total layer number m of the fabric warp yarns is determined to be 10 according to the thickness of the fabric;
secondly, arranging main warp yarns: the arrangement mode of the warps is an upper 5 layers and a lower 5 layers, 2 heddle eyes are separated in the upper layer and the lower layer, and a No. 45 reed is adopted, and every two lines of 200 rows of warps sequentially penetrate into the reed dent.
Thirdly, arranging edge warps: referring to FIG. 1, six rows of edge warp yarns are stepped in a gradient pattern on either side of the body warp yarn. As shown by a dotted line frame in fig. 1, 8 warps are respectively distributed in the 1 st, 2 nd, 3 rd and 4 th layers of two adjacent columns at the left and right sides of the main warp, and the 5 th layer is empty; the 6 th layer is empty, and 8 warps are respectively distributed in the 7 th, 8 th, 9 th and 10 th layers. 6 warps are respectively distributed in the 1 st, 2 nd and 3 rd layers of two rows which are next adjacent on the left and right sides of the main warp, and the 4 th and 5 th layers are empty; 6 th and 7 th layers are empty, and 6 warp yarns are respectively distributed in the 8 th, 9 th and 10 th layers. Four warp yarns are respectively distributed in the 1 st layer, the 2 nd layer and the 5 th layer of the two adjacent rows of the left side and the right side of the main warp yarns, namely the two rows of the edges of the gradient yarn distribution, and the 3 rd layer, the 4 th layer and the 5 th layer are empty; the 6 th, 7 th and 8 th layers are empty, and 4 warps are respectively laid in the 9 th and 10 th layers.
Fourthly, first weft is introduced: the two rows of frames are adjusted to the position that the front frame is higher than the two heald eyes of the rear frame, and the position after the yarn movement is shown in figure 2. The weft yarns are led in from the middle position of the layer 1 warp yarns and the layer 2 warp yarns and led out from the middle position of the layer 13 warp yarns and the layer 14 warp yarns; then the warp yarns are led in from the positions of the warp yarns of the 2 nd layer and the 3 rd layer and are led out from the middle positions of the warp yarns of the 12 th layer and the warp yarns of the 13 th layer; and then the warp yarns are led in from the middle positions of the 3 rd layer warp yarns and the 4 th layer warp yarns, are led out from the middle positions of the 11 th layer warp yarns and the 12 th layer warp yarns, and sequentially circulate until the warp yarns are led out from the middle positions of the 8 th layer warp yarns and the 9 th layer warp yarns, so that the leading-in of a first weft is completed, and the weaving is completed.
Step five, second weft insertion: the two rows of heald frames are adjusted to the position where the rear heald frame is higher than the two heald eyes of the front heald frame, and the position after the yarn movement is as shown in figure 3. And sequentially carrying out weft insertion according to the reverse direction of the first weft, namely leading in weft yarns from the middle position of the 8 th layer warp yarn and the 9 th layer warp yarn, and finally spirally leading out the weft yarns from the middle position of the 1 st layer warp yarn and the 2 nd layer warp yarn to complete the leading-in of the second weft and weave to complete the second weft.
And sixthly, repeating the fourth and fifth steps until all weft yarns are woven, and finishing the weaving of the 2.5D woven cylinder.
Embodiment mode 2
Embodiment 2 is substantially the same as embodiment 1 except that the fabric structure is a 2.5D woven shallow cross-linked structure, and the weaving method of the weft yarn is as follows:
first step, first weft insertion: the two heald frames in the front and rear rows are adjusted to be at positions where the front heald frame is higher than the two heald eyes of the rear heald frame, the position after the yarn movement is shown in fig. 2, and the weft yarn is introduced in the same manner as the first weft yarn of embodiment 1, which is not described herein again.
Second, second weft insertion: the front and rear heald frames are adjusted to be at the same level as the rear heald frame, the position after the yarn movement is as shown in fig. 1, and the weft yarn is introduced in the same manner as the second weft of embodiment 1, which is not described again here.
Step three, third weft insertion: the two heald frames in the front and rear rows are adjusted to be at positions where the rear heald frame is higher than the two heald eyes of the front heald frame, the position after the yarn movement is shown in fig. 3, and the weft yarn is introduced in the same manner as the third weft yarn of embodiment 1, which is not described again here.
Step four, fourth weft insertion: the front and rear heald frames are adjusted to be at the same level as the rear heald frame, the position after the yarn movement is as shown in fig. 1, and the weft yarn is introduced in the same manner as the fourth weft yarn of embodiment 1, which is not described again here.
And fifthly, repeating the fourth and fifth steps until all weft yarns are woven, and finishing weaving the 2.5D woven cylinder.
Embodiment 3
A2.5D conical profiling woven sleeve is prepared by a gradient cloth warp yarn mode. The warp yarns adopted by the weaving sleeve are 480Tex multiplied by 1 strands of high-strength glass fibers, the weft yarns are 480Tex multiplied by 2 strands of high-strength glass fibers, the thickness of the 2.5D weaving cone is 3.0mm, the diameter of the large end of the fabric is phi 400 +/-1 mm, and the diameter of the small end of the fabric is phi 0 mm. The fabric structure is a 2.5D woven shallow cross-direct connection structure, the designed number of layers of warp yarns is 4, the warp density of the fabric is 9 pieces/cm, and the weft density of the fabric is 4.0 pieces/cm.
The weaving method of the woven sleeve comprises the following steps:
step one, determining total column number n of fabric warp yarn as 1132 according to the perimeter of the fabric, and determining total layer number m of the fabric warp yarn as 8 according to the thickness of the fabric;
secondly, arranging main warp yarns: the arrangement mode of the warp yarns is an upper 4 layers and a lower 4 layers, 2 heddle eyes are separated in the upper layer and the lower layer, a No. 45 reed is adopted, and each two rows of 1132 rows of warp yarns are sequentially penetrated into the reed dent as a group.
Thirdly, arranging edge warps: referring to FIG. 4, four rows of edge warp yarns are stepped in a gradient pattern on either side of the body warp yarn. As shown by a dotted line frame in fig. 4, 6 warps are respectively distributed in the 1 st, 2 nd and 3 rd layers of two adjacent columns at the left and right sides of the main warp, and the 4 th layer is empty; the 5 th layer is empty, and 6 warps are respectively distributed in the 6 th, 7 th and 8 th layers. 4 warps are respectively distributed in the 1 st layer and the 2 nd layer of two rows which are next adjacent on the left side and the right side of the main warp, and the 3 rd layer and the 4 th layer are empty; the 5 th layer and the 6 th layer are empty, and 4 warp yarns are respectively distributed in the 7 th layer and the 8 th layer. Four warp yarns are respectively distributed in the 1 st layer and the 2 nd layer of the two adjacent rows of the left side and the right side of the main warp yarns, namely the two rows of the edges of the gradient yarn distribution, and the 3 rd layer and the 4 th layer are empty; the 5 th and 6 th layers are empty, and 4 warps are respectively laid in the 7 th and 8 th layers.
Fourthly, the first weft is introduced into the unattenuated warp: the two rows of frames are adjusted to the position where the front frame is higher than the two heddle eyes of the rear frame, and the position after the yarn movement is shown in figure 5. The weft yarns are led in from the middle position of the layer 1 warp yarns and the layer 2 warp yarns and led out from the middle position of the layer 11 warp yarns and the layer 12 warp yarns; then the warp yarns are led in from the positions of the warp yarns of the 2 nd layer and the 3 rd layer and are led out from the middle positions of the warp yarns of the 10 th layer and the warp yarns of the 11 th layer; and then the weft yarns are led in from the middle positions of the 3 rd layer warp yarns and the 4 th layer warp yarns, led out from the middle positions of the 9 th layer warp yarns and the 10 th layer warp yarns, and sequentially and circularly led in until the weft yarns are led out from the middle positions of the 7 th layer warp yarns and the 8 th layer warp yarns, so that the leading-in of the weft yarns is completed, and the weaving is completed for the first weft.
Fifth step, the second weft introduces and attenuates the warp: the front and rear rows of frames are adjusted to be at a position where the front frame is flush with the rear frame, and the position after the yarn movement is as shown in figure 4. According to the width change, attenuating corresponding number of warps in the middle, and sequentially inserting wefts in the opposite direction of the first weft, namely leading in the weft from the middle position of the 8 th layer of warp and the 9 th layer of warp, and finally spirally leading out the weft from the middle position of the 1 st layer of warp and the 2 nd layer of warp to finish the leading-in of the second weft and weaving to finish the second weft.
Sixth, the third weft introduces non-attenuated warp: the two rows of heald frames are adjusted to the position where the rear heald frame is higher than the two heald eyes of the front heald frame, and the position after the yarn movement is as shown in figure 6. And (4) introducing the weft yarns in the mode of the first weft, and weaving to complete the third weft.
Seventh step, fourth weft introduces and attenuates warp: the front and rear rows of frames are adjusted to be at a position where the front frame is flush with the rear frame, and the position after the yarn movement is as shown in figure 4. And according to the width change, attenuating corresponding warp yarns in the middle, introducing weft yarns in a third weft mode, and finishing the fourth weft after weaving.
And step eight, repeating the actions of the step four to the step seven until all weft yarns are woven, and finishing the weaving of the 2.5D weaving cone.
Embodiment 4
Embodiment 4 is substantially the same as embodiment 3 except that the fabric structure is a 2.5D woven shallow cross-linked structure and the weft yarns are woven by the following method:
first step, the first weft insertion unattenuated warp: the two rows of frames are adjusted to the position where the front frame is higher than the two heddle eyes of the rear frame, and the position after the yarn movement is shown in figure 5. The weft yarns are introduced in the same manner as in the first weft of embodiment 3, and will not be described in detail here.
Second, the second weft-insertion attenuating warp: the two rows of heald frames are adjusted to the position where the rear heald frame is higher than the two heald eyes of the front heald frame, and the position after the yarn movement is as shown in figure 6. The weft yarns are introduced in the same manner as in the second weft of embodiment 3, and will not be described in detail.
And thirdly, repeating the actions from the first step to the second step until all weft yarns are woven, and finishing the weaving of the 2.5D weaving cone.
The gradient cloth warp mode of the invention can also be applied to weaving any 2.5D tubular fabric with variable cross section or equal variable cross section in any other weaving structure except shallow cross bending connection and shallow cross straight connection.
Parts which are not specifically described in the above description are prior art or can be realized by the prior art.
Claims (8)
1. A2.5D profiling woven sleeve is composed of an upper piece and a lower piece, m is the total number of layers of fabric warp yarns, and m/2 layers of warp yarns contribute to the thickness of the fabric; n is the total row number of the fabric warp yarns, and n/2 rows of warp yarns contribute to the width of the fabric; m is an even number greater than or equal to 2, determined by the total thickness of the fabric warp yarns; n is a positive integer greater than 1, determined by the total number of rows of fabric warp yarns; the method for arranging the warp yarns of the woven sleeve is characterized by comprising the following steps of:
1) main warp yarns are arranged in an upper piece and a lower piece in a matrix mode, and more than 2 heddle eyes are arranged in the upper piece and the lower piece at intervals;
2) after the main body warp yarns are arranged, two rows of edge warp yarns are arranged in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, and the edge warp yarns decrease gradually from the inner layer to the outer layer.
2. The 2.5D contour woven sleeve as defined in claim 1 wherein said edge warp yarns are arranged in m/2+1 rows, with the rows from the inner layer to the outer layer decreasing from one row to the next.
3. A weaving method of a 2.5D cylindrical profiling woven sleeve is characterized by comprising the following steps of sequentially connecting:
3.1) determining the total column number n of the fabric warp yarns according to the perimeter of the fabric, and determining the total layer number m of the fabric warp yarns according to the thickness of the fabric;
3.2) main body warp arrangement: main warp yarns are arranged in an upper piece and a lower piece in a matrix mode, and more than 2 heddle eyes are arranged in the upper piece and the lower piece at intervals;
3.3) edge warp yarn arrangement: after the main body warp yarns are arranged, arranging edge warp yarns in two rows and one group in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, wherein the edge warp yarns decrease gradually from the inner layer to the outer layer;
3.4) spiral weft insertion: setting the heald frames where odd-numbered rows of warp yarns are positioned as front heald frames, and setting the heald frames where even-numbered rows of warp yarns are positioned as rear heald frames; the positions of the front and rear heald frames are in a parallel and level state in an initial state, the positions of the front and rear heald frames are correspondingly adjusted according to different weaving structures during weft insertion, when the heald frames move to a warp yarn to form a certain opening angle, the first weft is spirally introduced from the outer layer to the inner layer, the second weft is spirally introduced from the inner layer to the outer layer, the third weft is spirally introduced from the outer layer to the inner layer, the circular introduction and the extraction are sequentially carried out, the weft insertion is completed, and the weaving of the 2.5D woven cylinder is completed.
4. A weaving method according to claim 3, characterized in that the weaving structure comprises shallow zigzag or shallow straight crossovers.
5. The weaving method of the 2.5D conical profiling woven sleeve is characterized by comprising the following steps connected in sequence:
5.1) determining the total column number n of the fabric warp yarns according to the perimeter of the fabric, and determining the total layer number m of the fabric warp yarns according to the thickness of the fabric;
5.2) main body warp arrangement: main warp yarns are arranged in an upper piece and a lower piece in a matrix mode, and more than 2 heddle eyes are arranged in the upper piece and the lower piece at intervals;
5.3) edge warp yarn arrangement: after the main body warp yarns are arranged, arranging edge warp yarns in two rows and one group in a gradient decreasing mode from the middle to two edges on two sides of the main body warp yarns respectively, wherein the edge warp yarns decrease gradually from the inner layer to the outer layer;
5.4) spiral weft insertion: setting the heald frames where odd-numbered rows of warp yarns are positioned as front heald frames, and setting the heald frames where even-numbered rows of warp yarns are positioned as rear heald frames; the positions of the front and rear heald frames are in a parallel and level state in an initial state, the positions of the front and rear heald frames are correspondingly adjusted according to different weaving structures during weft insertion, when the heald frames move to a certain opening angle of warp yarns, a first weft is spirally introduced from an outer layer to an inner layer, a second weft is spirally introduced from the inner layer to the outer layer, a third weft is spirally introduced from the outer layer to the inner layer, the third weft is sequentially and circularly introduced and extracted to complete weft insertion, and main warp yarns are attenuated according to the change of the fabric width during the weft insertion;
5.5) beating-up: and after the main body warp is attenuated, the reed is pushed along the main body warp direction with certain assistance, so that the weft density is kept consistent, and the weaving of the 2.5D woven cone is completed.
6. A weaving method according to claim 5 wherein the first weft is unattenuated by the warp yarns, the second weft is attenuated by a corresponding number of warp yarns in the middle, the third weft is unattenuated by the warp yarns and the fourth weft is attenuated by a corresponding number of warp yarns in the middle, sequentially circulating.
7. The weaving method of claim 5, wherein the edge warp yarns are arranged in m/2+1 columns, with the number decreasing from the inner layer to the outer layer in groups of two columns.
8. The weaving method of claim 5, characterized in that the weaving structure comprises shallow zigzag or shallow straight crossovers.
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| CN111910320B (en) * | 2020-07-30 | 2021-06-11 | 南京玻璃纤维研究设计院有限公司 | Multi-piece forming method for plane profiling woven fabric |
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| CN111910318B (en) * | 2020-07-30 | 2021-06-18 | 南京玻璃纤维研究设计院有限公司 | Design method of reinforcement of fiber composite material shell |
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