A three-dimensional weaving method for a multi-layer honeycomb structure

Abstract

The application discloses a three-dimensional weaving method of a multi-layer honeycomb structure, and the method is characterized in that: at least four heald frames A, B, C and D with independent lifting strokes are arranged, a plurality of heald holes are arranged on the healds of each heald frame; the healds of the heald frames A and C are arranged with odd-numbered holes, and the healds of the heald frames B and D are arranged with even-numbered holes; according to the shape of the honeycomb structure, the lifting strokes of the heald frames A, B, C and D are controlled to adjust the arrangement of the warp threads, and each time the adjustment of the warp threads is completed, the weft insertion action is matched, until the three-dimensional weaving of the multi-layer honeycomb structure is completed. The method reduces the number of the heald frames and the healds participating in weaving, and also reduces the friction between the yarns through the separate warp threading mode of the odd-numbered layers and the even-numbered layers, while ensuring that the layers of the yarns are clear; the method also increases the step of inserting the core film in the weft insertion mode, greatly improves the composite efficiency, avoids the deformation defects of the fabric caused by the post-mold placement, and ensures that the multi-layer honeycomb structure is stable in size and uniform in mechanical properties.

Description

Technical Field

[0001] This invention relates to the field of three-dimensional fabric weaving technology, and in particular to a three-dimensional weaving method for a multi-layer honeycomb structure. Background Technology

[0002] Three-dimensional woven honeycomb structures possess superior properties such as lightweight and high strength, sound and heat insulation, strong impact resistance, and good integrity, making them suitable for applications in aerospace, automotive, construction, and many other fields. Currently, the weaving method for multi-layer honeycomb structures generally uses rapier looms with multiple heald frames. The number of heald frames is typically 20-24, resulting in a maximum of 20-24 warp layers. This allows for a maximum of 5-6 honeycomb structure units in the vertical direction, requiring a large number of healds, which can easily lead to unclear openings, severe wear of healds and frames, and high costs. In addition, a few use jacquard looms. However, jacquard looms are commonly used for weaving traditional yarns. When using high-performance yarns, some components of jacquard looms need to be specially customized, and the number of warp layers and fabric width are limited by the number of head frames, making it impossible to weave wide-width multi-layer honeycomb structures.

[0003] Therefore, it is evident that the existing three-dimensional weaving methods for multi-layer honeycomb structures still have inconveniences and defects, and urgently need further improvement. This application addresses these problems by creating a new three-dimensional weaving method for multi-layer honeycomb structures, thereby improving upon the shortcomings of existing weaving methods. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a three-dimensional weaving method for multi-layer honeycomb structures, which reduces the number of heald frames and reduces the friction between yarns while ensuring clear layering by using a separate warp threading method for odd and even layers; it also improves the composite efficiency and avoids fabric deformation caused by placing the mold later by inserting the weft during the weaving process, thus ensuring the dimensional stability and uniform mechanical properties of the honeycomb structure, thereby overcoming the shortcomings of existing multi-layer honeycomb structure weaving methods.

[0005] To solve the above technical problems, the present invention provides a three-dimensional weaving method for multi-layer honeycomb structures, the method comprising the following steps:

[0006] (1) Set at least four heald frames A, B, C and D, each heald frame corresponds to a servo motor, each heald frame has multiple strokes under the control of the corresponding servo motor, and each heald frame has multiple heald wire holes on the heald wire, with the spacing of the heald wire holes being h.

[0007] (2) At least four heddle frames A, B, C and D are arranged in sequence, and the warp threading method is as follows: the warp threads are threaded through the odd number of holes on the heddle wires of heddle frame A, the warp threads are threaded through the even number of holes on the heddle wires of heddle frame B, the warp threads are threaded through the odd number of holes on the heddle wires of heddle frame C, and the warp threads are threaded through the even number of holes on the heddle wires of heddle frame D. The warp threads of heddle frames A and B are inserted into one reed tooth, and the warp threads of heddle frames C and D are inserted into another reed tooth.

[0008] (3) According to the shape of the honeycomb structure, control the movement of at least four heald frames A, B, C and D to adjust the warp arrangement. Each warp adjustment is coordinated with a weft insertion action. After six warp adjustments, a honeycomb structure weaving cycle is completed.

[0009] (4) Repeat step (3) to complete the three-dimensional weaving of the multi-layer honeycomb structure.

[0010] Further improvements include a honeycomb structure core film placement step in step (3): after each honeycomb structure weaving cycle is completed, a hexagonal core film is inserted into the newly woven honeycomb structure by weft insertion to obtain a multi-layer honeycomb structure three-dimensional fabric with a core film.

[0011] Further improvements include the step of inserting the hexagonal core membrane into the honeycomb structure using an electric gripper with an effective stroke.

[0012] In a further improvement, if a fabric with an n-layer honeycomb structure is woven, the number of heddle holes on the heddle is at least 2n+1.

[0013] Further improvements were made, and the specific weaving method for the 6-layer honeycomb structure three-dimensional fabric is as follows:

[0014] S1 starts at the zero-stroke position of heald frames A, B, C, and D. Heald frames A and B remain stationary, while heald frames C and D move downwards by h. Weft threads 1-13 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom.

[0015] S2 heald frames A and B move downwards by h, heald frames C and D move upwards by h, and weft threads 14-26 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0016] S3 heald frames A and B both move upward by h, heald frames C and D both move downward by h, and weft threads 27-39 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0017] S4 heddle frame A moves downward for 2 hours, heddle frame B moves upward for 2 hours, heddle frame C remains stationary, and heddle frame D moves upward for 2 hours. Weft threads 40-46 are woven sequentially in layers 1 / 3 / 5 / 7 / 9 / 11 / 14 from top to bottom.

[0018] S5 heald frame A moves upward for 2 hours, heald frame B moves downward for 2 hours, heald frame C remains stationary, and heald frame D moves downward for 2 hours. Weft threads 47-53 are woven sequentially in layers 2 / 4 / 6 / 8 / 10 / 12 / 13 from top to bottom.

[0019] S6 heddle frame A moves downward for 2 hours, heddle frame B moves upward for 2 hours, heddle frame C remains stationary, and heddle frame D moves upward for 2 hours. Weft threads 54-60 are woven sequentially in layers 1 / 3 / 5 / 7 / 9 / 11 / 14 from top to bottom.

[0020] S7 heald frame A moves upward for 2 hours, heald frame B moves downward for 2 hours, heald frame C remains stationary, heald frame D moves downward for 2 hours, and weft threads 61-73 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 in the order from top to bottom.

[0021] S8 heald frames A and B both move downwards by h, heald frames C and D both move upwards by h, and weft threads 74-86 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0022] S9 heald frames A and B both move upward by h, heald frames C and D both move downward by h, and weft threads 87-99 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0023] S10 heddle frame A moves downward for h, heddle frame B moves downward for 3h, heddle frame C moves upward for h, and heddle frame D moves downward for 2h. Weft threads 100-106 are woven sequentially in layers 1 / 4 / 6 / 8 / 10 / 12 / 14 in the order from top to bottom.

[0024] S11 heddle frame A moves upward by h, heddle frame B moves upward by 3h, heddle frame C moves downward by h, and heddle frame D moves upward by 3h. Weft threads 107-113 are woven sequentially in layers 1 / 2 / 4 / 6 / 8 / 10 / 12 in the order from top to bottom.

[0025] S12 heald frame A moves downward by h, heald frame B moves downward by 3h, heald frame C moves upward by h, and heald frame D moves downward by 3h. Weft threads 114-120 are woven sequentially in layers 1 / 4 / 6 / 8 / 10 / 12 / 14 from top to bottom.

[0026] S13 heald frame A moves upward for h, heald frame B moves upward for 3h, heald frame C moves downward for h, and heald frame D moves upward for 2h. Weft threads 121-133 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom.

[0027] S14 Repeat steps S2-S13 above until the required 6-layer honeycomb structure of the three-dimensional fabric is woven.

[0028] In a further improvement, after step S3, after every 6 warp adjustments, a honeycomb structure weaving cycle is formed. The hexagonal core membrane is inserted into the newly woven honeycomb structure by weft insertion, resulting in a multi-layered honeycomb structure three-dimensional fabric with a core membrane.

[0029] Further improvements include the step of inserting the hexagonal core membrane into the honeycomb structure using an electric gripper with an effective stroke.

[0030] Further improvements include the woven, multi-layered honeycomb three-dimensional fabric with a core membrane being pulled out by a pulling mechanism, and then cut by a shearing device after being pulled to the required length.

[0031] With this design, the present invention has at least the following advantages:

[0032] The three-dimensional weaving method for multi-layer honeycomb structures of this invention improves the heddle lifting mechanism, requiring only four heddle frames to meet the weaving needs of multi-layer honeycomb structures, thus reducing the number of heddle frames and heddle yarns involved in the weaving. At the same time, by using separate warp threading for odd and even layers, friction between yarns is reduced, while ensuring clear layering and distinct openings between yarns. Furthermore, by adding a step of inserting a hexagonal core film using a weft insertion method, the composite efficiency is greatly improved, and fabric deformation defects caused by the post-placement of existing molds are avoided, ensuring dimensional stability and uniform mechanical properties of the multi-layer honeycomb structure. Attached Figure Description

[0033] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 This is a schematic diagram of the warp threading method of the four heald frames of the 6-layer honeycomb structure fabric in an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram illustrating the movement of the heald frame and the weft insertion in the weaving process of the 6-layer honeycomb structure fabric in this embodiment of the invention.

[0036] Figure 3 This is a schematic diagram of the warp and weft structure of the 6-layer honeycomb structure fabric in an embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of the structure of a 6-layer honeycomb structure fabric with a core mold woven according to an embodiment of the present invention. Detailed Implementation

[0038] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that a more thorough understanding of the invention will be achieved and that the full scope of the invention will be conveyed to those skilled in the art.

[0039] The three-dimensional weaving method for multi-layer honeycomb structures of the present invention can realize the weaving of multi-layer honeycomb units in the vertical direction. Currently, it is possible to weave honeycomb units with n≤8 layers using 4 heald frames in the vertical direction.

[0040] This embodiment takes the weaving of a 6-layer honeycomb structure as an example to specifically illustrate the steps of the three-dimensional weaving method of the present invention. The specific weaving steps are as follows:

[0041] (1) An improved semi-automatic three-dimensional loom is adopted, which is set with four heald frames A, B, C and D. Each heald frame corresponds to a servo motor. Each heald frame has multiple strokes under the control of the corresponding servo motor. Each heald frame has multiple heald wire holes on the heald wires. The spacing of the heald wire holes is h.

[0042] The three-dimensional woven honeycomb unit has a regular hexagonal structure, with plain weave on its free edges and weft-reinforced plain weave on its joint edges. If weaving an n-layer honeycomb structure, the number of heddle holes on each heddle must be at least 2n+1. For example, if weaving a 6-layer honeycomb structure, the number of heddle holes on each heddle is 13. Of course, when 2n+1 is greater than the total number of heddle holes or the warp layers are unclear, the number of heddle frames can be appropriately increased.

[0043] (2) The warp threading method in the four heald frames A, B, C, and D is as follows: The four heald frames A, B, C, and D are arranged sequentially. For heald frame A, the warp threads are threaded through odd-numbered holes, i.e., through the 1st / 3rd / 5th / 7th / 9th / 11th / 13th heald holes. For heald frame B, the warp threads are threaded through even-numbered holes, i.e., through the 2nd / 4th / 6th / 8th / 10th / 12th heald holes. For heald frame C, the warp threads are threaded through odd-numbered holes, i.e., through the 1st / 3rd / 5th / 7th / 9th / 11th / 13th heald holes. For heald frame D, the warp threads are threaded through even-numbered holes, i.e., through the 2nd / 4th / 6th / 8th / 10th / 12th heald holes. (See attached diagram.) Figure 1 As shown. The warp yarns of heald frames A and B are inserted into one reed tooth, and the warp yarns of heald frames C and D are inserted into another reed tooth.

[0044] (3) Based on the shape of the honeycomb structure, control the movement of the four heald frames A, B, C, and D to adjust the warp arrangement. Each warp adjustment is accompanied by a weft insertion action. After six warp adjustments, one honeycomb structure weaving cycle is completed, until the three-dimensional weaving of the multi-layer honeycomb structure is completed. The weft insertion action is as follows: each time a warp adjustment is completed, a corresponding column of weft yarn is introduced in the vertical direction. The number of weft yarn layers is (2 × number of honeycomb layers + 1) or (number of honeycomb layers + 1).

[0045] See attached document Figure 2 and 3 As shown, the specific weaving steps are as follows:

[0046] S1 starts at the zero-stroke position of heald frames A, B, C, and D. Heald frames A and B remain stationary, while heald frames C and D move downwards by h. Weft threads 1-13 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom.

[0047] S2 heald frames A and B move downwards by h, heald frames C and D move upwards by h, and weft threads 14-26 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0048] S3 heald frames A and B both move upward by h, heald frames C and D both move downward by h, and weft threads 27-39 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0049] S4 heddle frame A moves downward for 2 hours, heddle frame B moves upward for 2 hours, heddle frame C remains stationary, and heddle frame D moves upward for 2 hours. Weft threads 40-46 are woven sequentially in layers 1 / 3 / 5 / 7 / 9 / 11 / 14 from top to bottom.

[0050] S5 heald frame A moves upward for 2 hours, heald frame B moves downward for 2 hours, heald frame C remains stationary, and heald frame D moves downward for 2 hours. Weft threads 47-53 are woven sequentially in layers 2 / 4 / 6 / 8 / 10 / 12 / 13 from top to bottom.

[0051] S6 heddle frame A moves downward for 2 hours, heddle frame B moves upward for 2 hours, heddle frame C remains stationary, and heddle frame D moves upward for 2 hours. Weft threads 54-60 are woven sequentially in layers 1 / 3 / 5 / 7 / 9 / 11 / 14 from top to bottom.

[0052] S7 heald frame A moves upward for 2 hours, heald frame B moves downward for 2 hours, heald frame C remains stationary, heald frame D moves downward for 2 hours, and weft threads 61-73 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 in the order from top to bottom.

[0053] S8 heald frames A and B both move downwards by h, heald frames C and D both move upwards by h, and weft threads 74-86 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0054] S9 heald frames A and B both move upward by h, heald frames C and D both move downward by h, and weft threads 87-99 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom;

[0055] S10 heddle frame A moves downward for h, heddle frame B moves downward for 3h, heddle frame C moves upward for h, and heddle frame D moves downward for 2h. Weft threads 100-106 are woven sequentially in layers 1 / 4 / 6 / 8 / 10 / 12 / 14 in the order from top to bottom.

[0056] S11 heddle frame A moves upward by h, heddle frame B moves upward by 3h, heddle frame C moves downward by h, and heddle frame D moves upward by 3h. Weft threads 107-113 are woven sequentially in layers 1 / 2 / 4 / 6 / 8 / 10 / 12 in the order from top to bottom.

[0057] S12 heald frame A moves downward by h, heald frame B moves downward by 3h, heald frame C moves upward by h, and heald frame D moves downward by 3h. Weft threads 114-120 are woven sequentially in layers 1 / 4 / 6 / 8 / 10 / 12 / 14 from top to bottom.

[0058] S13 heald frame A moves upward for h, heald frame B moves upward for 3h, heald frame C moves downward for h, and heald frame D moves upward for 2h. Weft threads 121-133 are woven sequentially in layers 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 from top to bottom.

[0059] S14 Repeat steps S2-S13 above until the required 6-layer honeycomb structure of the three-dimensional fabric is woven.

[0060] In a preferred embodiment, to ensure uniform shape of the three-dimensional woven honeycomb units and avoid fabric deformation caused by the placement mold during subsequent lamination, after step S3, a honeycomb structure weaving cycle is formed after every 6 warp adjustment weaving steps. A hexagonal core membrane is then inserted into the newly woven honeycomb structure using a weft insertion method, resulting in a multi-layered honeycomb structure three-dimensional fabric with a core membrane, as shown in the attached figure. Figure 4 As shown.

[0061] (4) The woven multi-layer honeycomb structure three-dimensional fabric with core membrane is pulled out by the chain-formed pulling mechanism. After being pulled to the required length, it is cut by the shearing device.

[0062] In practice, the insertion of the core film requires pausing the conventional weft insertion mechanism to feed the weft yarn and simultaneously stopping the pulling mechanism. An additional electric gripper then holds the hexagonal mold and places it sequentially into the gaps of the newly formed six-layer honeycomb structure, creating a multi-layered three-dimensional honeycomb fabric with the core film. In this embodiment, the added electric gripper can be any existing gripper structure, as long as it enables the insertion of the hexagonal core film into the newly woven honeycomb structure via weft insertion.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, or alterations made by those skilled in the art using the disclosed technical content shall fall within the protection scope of the present invention.

Claims

1. A three-dimensional weaving method of a multilayer honeycomb structure, characterized by, The method comprises the following steps: (1) four heald frames A, B, C and D are arranged, each heald frame corresponds to a servo motor, each heald frame has a plurality of active courses under the control of the corresponding servo motor, a plurality of heald holes are arranged on the heald wire of each heald frame, and the spacing of the heald holes is h; (2) the four heald frames A, B, C and D are arranged in sequence, and the threading mode is that the heald wire on the heald frame A is threaded with odd holes, the heald wire on the heald frame B is threaded with even holes, the heald wire on the heald frame C is threaded with odd holes, the heald wire on the heald frame D is threaded with even holes, and the warp threads of the heald frame A and the heald frame B enter a reed, and the warp threads of the heald frame C and the heald frame D enter another reed; (3) according to the shape of the honeycomb structure, the active courses of the four heald frames A, B, C and D are controlled to adjust the arrangement of the warp threads, and after completing the adjustment of the warp threads once, the weft threads are introduced once, and after six times of adjustment of the warp threads, a weaving cycle of the honeycomb structure is completed; (4) repeating step (3) to complete three-dimensional weaving of a plurality of layers of honeycomb structures; The specific weaving method of the three-dimensional fabric of the six-layer honeycomb structure is as follows: S1, taking the zero active course of the heald frames A, B, C and D as the starting position, the heald frames A and B remain stationary, the heald frames C and D are both moved downward by h, and the 1-13 weft threads are woven in sequence from top to bottom on the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers; S2, the heald frames A and B are both moved downward by h, the heald frames C and D are both moved upward by h, and the 14-26 weft threads are woven in sequence from top to bottom on the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers; S3, the heald frames A and B are both moved upward by h, the heald frames C and D are both moved downward by h, and the 27-39 weft threads are woven in sequence from top to bottom on the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers; S4, the heald frame A is moved downward by 2h, the heald frame B is moved upward by h, the heald frame C remains stationary, the heald frame D is moved upward by 2h, and the 40-46 weft threads are woven in sequence from top to bottom on the 1 / 3 / 5 / 7 / 9 / 11 / 14 layers; S5, the heald frame A is moved upward by 2h, the heald frame B is moved downward by 2h, the heald frame C remains stationary, the heald frame D is moved downward by 2h, and the 47-53 weft threads are woven in sequence from top to bottom on the 2 / 4 / 6 / 8 / 10 / 12 / 13 layers; S6, the heald frame A is moved downward by 2h, the heald frame B is moved upward by 2h, the heald frame C remains stationary, the heald frame D is moved upward by 2h, and the 54-60 weft threads are woven in sequence from top to bottom on the 1 / 3 / 5 / 7 / 9 / 11 / 14 layers; S7, the heald frame A is moved upward by 2h, the heald frame B is moved downward by h, the heald frame C remains stationary, the heald frame D is moved downward by 2h, and the 61-73 weft threads are woven in sequence from top to bottom on the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers; S8 the heald frames A and B are moved downward by h, the heald frames C and D are moved upward by h, and the 74-86 weft threads are woven in the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers in turn from top to bottom; S9 the heald frames A and B are moved upward by h, the heald frames C and D are moved downward by h, and the 87-99 weft threads are woven in the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers in turn from top to bottom; S10 the heald frame A is moved downward by h, the heald frame B is moved downward by 3h, the heald frame C is moved upward by h, the heald frame D is moved downward by 2h, and the 100-106 weft threads are woven in the 1 / 4 / 6 / 8 / 10 / 12 / 14 layers in turn from top to bottom; S11 the heald frame A is moved upward by h, the heald frame B is moved upward by 3h, the heald frame C is moved downward by h, the heald frame D is moved upward by 3h, and the 107-113 weft threads are woven in the 1 / 2 / 4 / 6 / 8 / 10 / 12 layers in turn from top to bottom; S12 the heald frame A is moved downward by h, the heald frame B is moved downward by 3h, the heald frame C is moved upward by h, the heald frame D is moved downward by 3h, and the 114-120 weft threads are woven in the 1 / 4 / 6 / 8 / 10 / 12 / 14 layers in turn from top to bottom; S13 the heald frame A is moved upward by h, the heald frame B is moved upward by 3h, the heald frame C is moved downward by h, the heald frame D is moved upward by 2h, and the 121-133 weft threads are woven in the 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 layers in turn from top to bottom; S14 the steps S2-S13 are repeated until the weaving of the three-dimensional fabric of the required 6-layer honeycomb structure is completed.

2. The three-dimensional weaving method of a multi-layer honeycomb structure according to claim 1, wherein The step of inserting the hexagonal core film into the honeycomb structure is completed by an electric gripper with an effective stroke.

3. The method of three-dimensional weaving of multilayer honeycomb structures according to claim 2, characterized in that, If the fabric of n-layer honeycomb structure is woven, the number of heald holes on the heald is at least 2n+1.

4. The method of three-dimensional weaving of multilayer honeycomb structures according to claim 1, characterized in that, After the step S3, every 6 times of warp adjustment forms a honeycomb structure weaving cycle, and the hexagonal core film is inserted into the just-woven honeycomb structure in the weft manner to obtain the multi-layer honeycomb structure three-dimensional fabric with the core film.

5. The method of three-dimensional weaving of multilayer honeycomb structures according to claim 4, characterized in that, The step of inserting the hexagonal core film into the honeycomb structure is completed by an electric gripper with an effective stroke.

6. The method of three-dimensional weaving of a multilayer honeycomb structure according to claim 5, wherein The multi-layer honeycomb structure three-dimensional fabric with the core film that is completed is pulled out by a pulling mechanism, and after the required length is pulled, it is cut by a cutting device.

7. The method of claim 5, wherein the method further comprises: ​

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