A multi-axial fabric weaving method and a multi-axial fabric

Abstract

The present application relates to the technical field of textile, and especially relates to a multi-axial fabric weaving method. The method comprises the following steps: laying a layer of first yarn according to a preset arrangement rule; laying a layer of second yarn above the first yarn, the second yarn intersecting with the first yarn in space; laying a layer of third yarn above the second yarn, the third yarn intersecting with the second yarn in space; moving the first yarn upward and moving the third yarn downward to make the second yarn form a plurality of curved segments, the curved segments forming open channels; introducing target yarns to be introduced into each of the open channels in a preset direction until the introduction of all target yarns is completed; and moving the first yarn and the third yarn back to the original position to complete the weaving of the multi-axial fabric. The present application can improve the integrity of the fabric and the stability of the product quality.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a method for weaving multiaxial fabrics and the fabric itself. Background Technology

[0002] Multiaxial fabrics are a novel weaving technology. Traditional biaxial planar fabrics are composed of two interwoven yarn systems: warp and weft, with the warp and weft yarns arranged at 0° / 90°, resulting in a high yarn content along both warp and weft directions. Furthermore, biaxial fabrics are prone to oblique deformation during use, exhibiting poor morphological stability. Multiaxial fabrics, on the other hand, introduce multiple axial yarn systems in the planar direction, offering advantages such as good morphological stability, resistance to twisting, and good stress uniformity. They hold significant application prospects and value in various fields, including aerospace, rail transportation, and sports and entertainment.

[0003] Currently, the main weaving methods for multiaxial fabrics include bonding and stitching. Bonding involves bonding various shaped planar fabrics at different angles, but its overall performance is relatively poor, and the fabric layers are prone to debonding. Stitching involves sewing the aforementioned planar fabrics that have been turned at different angles together to form a whole. Its disadvantage is that the puncture position during the sewing process is not fixed, and the structural density is insufficient.

[0004] In summary, current technologies for preparing multiaxial planar fabrics suffer from insufficient fabric integrity and product quality stability. Therefore, there is an urgent need to develop a new weaving method for multiaxial fabrics to achieve the overall weaving of multiaxial fabrics and overcome the challenges of preparing fabrics with a higher number of axes. Summary of the Invention

[0005] This invention provides a multi-axial fabric weaving method that can improve the integrity of the fabric and the stability of product quality.

[0006] In a first aspect, embodiments of the present invention provide a method for weaving multiaxial fabrics, including:

[0007] A first set of yarns is laid out according to a preset arrangement pattern; wherein, the first set of yarns consists of multiple parallel yarns;

[0008] A set of second yarns is laid above the first yarn; wherein the second yarns are composed of multiple parallel yarns and intersect the first yarns in space;

[0009] A third yarn is laid above the second yarn; wherein the third yarn is composed of multiple parallel yarns and intersects the second yarn in space;

[0010] The first yarn is moved upward and the third yarn is moved downward, so that the second yarn forms multiple curved segments, each of which forms an open channel; wherein the size and direction of the open channel are controlled by the relative direction and displacement of the movement of the first yarn and the third yarn;

[0011] The target yarn to be introduced is introduced into each of the opening channels in a preset direction until all target yarns have been introduced.

[0012] The first yarn and the third yarn are moved in their original positions to complete the weaving of the multiaxial fabric.

[0013] In one embodiment, the arrangement includes reserving space between two adjacent first yarns to accommodate at least one third yarn.

[0014] In one embodiment, when the third yarn and the first yarn move relative to each other in an up-down direction, their trajectories do not interfere with each other.

[0015] In one embodiment, after the first yarn moves upward, there are n sets of first yarns with different upward displacements, where n≥1.

[0016] In one embodiment, after the third yarn moves downward, there are m groups of third yarns with different downward displacements, where m ≥ 1.

[0017] In one embodiment, after the first yarn and the third yarn move upward and downward, respectively, a curved segment with a height of m+n is formed.

[0018] In one embodiment, the opening channel is formed by arranging multiple sets of curved segments of second yarns.

[0019] In one embodiment, the preset direction is consistent with the target yarn direction, which is contained within the opening channel.

[0020] In one embodiment, the direction of the opening channel is formed by a combination of curved segments of different target yarns.

[0021] In one embodiment, the target yarn direction includes a projection angle α with the horizontal direction of the second yarn and a projection angle β with the height direction of the second yarn.

[0022] In one embodiment, the target yarn is introduced into each of the open channels by means of medium clamping traction, airflow traction, or waterflow traction.

[0023] In one embodiment, the fibers used in the first yarn, the second yarn, the third yarn, and the target yarn include one or more of carbon fiber, quartz fiber, and ceramic fiber.

[0024] Secondly, embodiments of the present invention provide a multiaxial fabric, which is woven using the multiaxial fabric weaving method described in the above embodiments.

[0025] In one embodiment, the multiaxial fabric includes planar multiaxial fabric, three-dimensional multiaxial fabric, and mesh-like multiaxial fabric.

[0026] Beneficial effects:

[0027] The multiaxial fabric weaving method and multiaxial fabric provided by the embodiments of the present invention can realize the weaving of various high-performance yarn multiaxial fabrics. The axial direction and content of the yarns in the plane of the fabric can be freely designed and controlled. The fabrics made by the method of the present invention can significantly improve the anisotropic properties of the fabric and meet the performance requirements of various fields such as aerospace and rail transportation. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic flowchart of a multi-axial fabric weaving method according to Embodiment 1 of the present invention is shown;

[0030] Figure 2 A schematic diagram showing one arrangement pattern of the first yarn is shown;

[0031] Figure 3 A schematic diagram of the structure of the first yarn, the second yarn, and the third yarn is shown when the first yarn moves upward and the third yarn moves downward.

[0032] Figure 4 A schematic diagram showing the planar projection angle α and the height projection angle β of the target yarn is shown;

[0033] Figure 5 A schematic diagram of the preset direction is shown;

[0034] Figure 6 A schematic diagram of a triaxial fabric is shown.

[0035] Figure 7 A schematic diagram of a four-axis fabric is shown.

[0036] Figure 8 A schematic diagram of the side structure of a four-axis fabric is shown. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, this embodiment of the invention provides a method for weaving multiaxial fabrics, the method comprising:

[0039] Step S1: Lay out a set of first yarns according to a preset arrangement pattern; wherein, the first yarns are composed of multiple parallel yarns;

[0040] Step S2: Lay a set of second yarns above the first yarn; wherein the second yarns are composed of multiple parallel yarns and intersect the first yarns in space;

[0041] Step S3: Lay a set of third yarns above the second yarn; wherein the third yarns are composed of multiple parallel yarns and intersect the second yarns in space;

[0042] Step S4: Move the first yarn upward and the third yarn downward so that the second yarn forms multiple curved segments, each curved segment forming an open channel; wherein, the size and direction of the open channel are controlled by the relative direction and displacement of the movement of the first yarn and the third yarn.

[0043] Step S5: Introduce the target yarn to be introduced into each open channel in a preset direction until all target yarns have been introduced.

[0044] Step S6: Move the first yarn and the third yarn back to their original positions to complete the weaving of the multiaxial fabric.

[0045] In this embodiment, the above-described weaving method can realize the weaving of various high-performance multi-axial fabrics, and can freely design and control the axial direction and content of the yarns in the plane of the fabric. The fabrics made by the method of the present invention can significantly improve the anisotropic properties of the fabric and meet the performance requirements of various fields such as aerospace and rail transportation.

[0046] like Figure 2As shown, a space is reserved between two adjacent first yarns (i.e., the solid line portion) for a third yarn (i.e., the dotted line portion), which can be called a space between one yarn and one line (i.e., one yarn is arranged with one line and one line is alternated). Of course, it can also be arranged in a pattern such as one line between two yarns, two lines between one yarn, two lines between two yarns, one line between one yarn and two lines between two yarns, etc., without being specifically limited here.

[0047] In one embodiment of the invention, the arrangement includes reserving space between two adjacent first yarns to accommodate at least one third yarn. This arrangement ensures that the first and third yarns do not overlap spatially as much as possible, so that when the first yarn moves upward and the third yarn moves downward, the second yarn can form multiple curved segments, each forming an open channel (see [reference]). Figure 3 This facilitates the introduction of the target yarn.

[0048] in addition, Figure 5 Three methods for forming opening channels are demonstrated. It should be noted that the opening channels described in this invention include, but are not limited to, those described in the present invention. Figure 5 The three methods of opening channels shown are not specifically limited here.

[0049] In one embodiment of the present invention, the third yarn is parallel to the first yarn in space.

[0050] In one embodiment of the present invention, the angle at which the third yarn intersects the first yarn in space is less than 20°.

[0051] In one embodiment of the present invention, when the first yarn moves upward, at least one first yarn may move upward a different distance than the other first yarns. That is, the rising height of a single first yarn can be controlled individually. The device and principle for achieving the rising are not limited here, as long as the rising can be achieved.

[0052] In one embodiment of the present invention, when the third yarn moves downward, at least one third yarn may move downward a different distance than the other third yarns. That is, the descent height of a single third yarn can be controlled individually. The device and principle for achieving descent are not limited here, as long as descent can be achieved.

[0053] This configuration ensures that the number of target yarns accommodated in the multiple open channels formed by the second yarn is different. In other words, the axial direction and the content of yarns in each axial direction of the fabric can be adjusted according to design requirements, thereby improving the anisotropy of the internal structure of the fabric and enhancing the mechanical properties or functional characteristics of the fabric in that direction.

[0054] In one embodiment of the present invention, when the third yarn and the first yarn move relative to each other in the upper and lower directions, their trajectories are exactly offset in space so as not to interfere with each other and to complete the relative movement smoothly.

[0055] In one embodiment of the present invention, after the first yarn moves upward, there are n sets of first yarns with upward displacement.

[0056] In one embodiment of the present invention, after the third yarn moves downward, there are m sets of third yarns with downward displacement.

[0057] In one embodiment of the present invention, after the first yarn and the third yarn move upward and downward, respectively, a bending segment with a height of n+m is formed.

[0058] In one embodiment of the present invention, the opening channel is formed by arranging multiple sets of curved sections at different relative positions of the second yarn.

[0059] In one embodiment of the present invention, the direction of the opening channel is determined by the direction formed by the combination of curved segments of different target yarns.

[0060] In one embodiment of the present invention, the preset direction is consistent with the target yarn direction, and the target yarn direction is contained in the opening channel, that is, the target yarn direction can be in any direction within the opening channel space.

[0061] In one embodiment of the present invention, the target yarn direction includes a projection angle α with the horizontal direction of the second yarn and a projection angle β with the height direction of the second yarn.

[0062] In some embodiments, the weaving method of multiaxial fabrics provided in this invention can be used to manufacture composite material reinforcements and applied in fields such as aviation, aerospace, shipbuilding, and rail transportation.

[0063] In one embodiment of the present invention, the target yarn is introduced into each open channel by means of medium clamping traction, airflow traction or water flow traction.

[0064] In some implementations, the target yarn can be introduced via a yarn feeding device.

[0065] In one embodiment of the present invention, the fibers used in the first yarn, the second yarn and the third yarn include one or more of carbon fiber, quartz fiber and ceramic fiber.

[0066] In one embodiment of the present invention, the preset direction includes a direction at 45° or 90° to the second yarn. Of course, the preset direction can also be other directions, for example... Figure 6 The schematic diagram of a triaxial fabric with 0° / 26° / 90° is shown, for example... Figure 7 and Figure 8A schematic diagram of a four-axis fabric with 0° / 45° / 90° / 108° / 124° is shown.

[0067] Furthermore, combined Figure 6 To illustrate the above weaving method:

[0068] a) Prepare planar triaxial fabric, using T300-3K carbon fiber as the yarn material;

[0069] b) Arrange the first yarn with a yarn spacing of 5.0 mm, following a one-to-one arrangement pattern;

[0070] c) Arrange the second yarn on top of the first yarn, with the arrangement direction at 90° to the first yarn and the yarn spacing being 2.5mm;

[0071] d) Arrange a third yarn on top of the second yarn. The third yarn is arranged within the intervals formed by the arrangement of the first yarn, and the arrangement direction is parallel to the first yarn. The yarn spacing is 5.0 mm, and the arrangement pattern is one yarn per interval.

[0072] e) The third yarn moves downward and the first yarn moves upward, with the height of both movements being 5.0 mm, to pull the second yarn to form a 10.0 mm opening;

[0073] f) The target yarn to be introduced is introduced into the open channel using a yarn feeding device, wherein the projection angle α is 26° and the height angle β is 0°; wherein the projection angle α is the angle with the horizontal direction of the second yarn and the height angle β is the angle with the height direction of the second yarn.

[0074] g) Move the first and third yarns back to their original positions to complete the weaving of a triaxial fabric with a 0° / 26° / 90° angle.

[0075] Furthermore, combined Figure 7 To illustrate the above weaving method:

[0076] a) Prepare a planar tetraaxial fabric, using T300-3K carbon fiber as the yarn material;

[0077] b) Arrange the first yarn with a yarn spacing of 5.0 mm, following a one-to-one arrangement pattern;

[0078] c) Arrange the second yarn on top of the first yarn, with the arrangement direction at 90° to the first yarn and the yarn spacing being 2.5mm;

[0079] d) Arrange a third yarn on top of the second yarn. The third yarn is arranged within the intervals formed by the arrangement of the first yarn, and the arrangement direction is parallel to the first yarn. The yarn spacing is 5.0 mm, and the arrangement pattern is one yarn per interval.

[0080] e) The third yarn moves downward and the first yarn moves upward, with each movement reaching a height of 7.5 mm, to pull the second yarn and create a 15.0 mm opening;

[0081] f) Use a yarn feeding device to introduce the target yarn into the open channel, with a projection angle α of 45° and a height angle β of 0°, to complete the introduction of the axial yarn.

[0082] g) Use a yarn feeding device to introduce the target yarn into the open channel, with a projection angle α of 108° and a height angle β of 0°, to complete the introduction of the axial yarn;

[0083] h) The target yarn to be introduced is introduced into the open channel using a yarn feeding device, with a projection angle α of 124° and a height angle β of 0°, thus completing the introduction of the axial yarn.

[0084] i) The first and third yarns are moved back to their original positions to complete the weaving of a 0° / 45° / 90° / 108° / 124° four-axis fabric. The cross-section of the resulting multi-axis fabric is as follows: Figure 8 As shown.

[0085] In addition, this invention also provides a multiaxial fabric woven using the method mentioned in the above embodiments.

[0086] It is understood that the multiaxial fabric provided in the embodiments of the present invention and the multiaxial fabric weaving method provided in the above embodiments are based on the same inventive concept, and therefore have the same beneficial effects, which will not be elaborated here.

[0087] In some embodiments, multiaxial fabrics include planar multiaxial fabrics, three-dimensional multiaxial fabrics, and mesh-like multiaxial fabrics, without being specifically limited herein.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0089] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A method for weaving multi-axial fabrics, characterized in that, include: A first set of yarns is laid out according to a preset arrangement pattern; wherein, the first set of yarns consists of multiple parallel yarns; A set of second yarns is laid above the first yarn; wherein the second yarns are composed of multiple parallel yarns and intersect the first yarns in space; A third yarn is laid above the second yarn; wherein the third yarn is composed of multiple parallel yarns and intersects the second yarn in space; The first yarn is moved upward and the third yarn is moved downward, so that the second yarn forms multiple curved segments, each of which forms an open channel; wherein the size and direction of the open channel are controlled by the relative direction and displacement of the movement of the first yarn and the third yarn; The target yarn to be introduced is introduced into each of the opening channels in a preset direction until all target yarns have been introduced. The first yarn and the third yarn are moved in their original positions to complete the weaving of the multiaxial fabric; After the first yarn moves upward, there are n sets of first yarns with different upward displacements, where n≥1; After the third yarn moves downward, there are m groups of third yarns with different downward displacements, where m≥1; After the first yarn and the third yarn move upward and downward respectively, they form curved sections with heights of m+n.

2. The method according to claim 1, characterized in that, The arrangement rule includes reserving space between two adjacent first yarns to accommodate at least one third yarn.

3. The method according to claim 1, characterized in that, When the third yarn moves relative to the first yarn in an up-down direction, their trajectories do not interfere with each other.

4. The method according to claim 1, characterized in that, The opening channel is formed by arranging multiple sets of curved sections of the second yarn.

5. The method according to claim 1, characterized in that, The preset direction is consistent with the target yarn direction, and the target yarn direction is contained within the opening channel.

6. The method according to claim 1, characterized in that, The direction of the opening channel is formed by a combination of curved sections of different target yarns.

7. The method according to claim 1, characterized in that, The target yarn is introduced into each of the opening channels by means of medium clamping traction, airflow traction, or water flow traction.

8. The method according to any one of claims 1-7, characterized in that, The fibers used in the first yarn, the second yarn, the third yarn, and the target yarn include one or more of carbon fiber, quartz fiber, and ceramic fiber.

9. A multiaxial fabric, characterized in that, It is woven using the method described in any one of claims 1-8.

10. The multiaxial fabric according to claim 9, characterized in that, The multiaxial fabrics include planar multiaxial fabrics, three-dimensional multiaxial fabrics, and mesh-like multiaxial fabrics.

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