Three-dimensional preform weaving method

Abstract

The application relates to the field of three-dimensional weaving technology of composite materials and discloses a three-dimensional preform weaving forming method, which comprises the following steps: acquiring Z-direction guiding array information of a three-dimensional preform and weaving path information of an X-Y plane; according to the weaving path information of the X-Y plane, the Z-direction guiding array is divided into a first region and a second region along the X-Y plane; a guiding rod is arranged in the first region, and a first fiber rod is arranged in the second region; according to the weaving path information of the X-Y plane, a first fiber bundle is woven and compacted along the Z direction layer by layer until a preset parameter of the three-dimensional preform is reached; the guiding rod is removed, and a second fiber bundle locks the three-dimensional preform along the arrangement path of at least part of the guiding rod. The three-dimensional preform weaving forming method shortens the weaving period of the preform and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-dimensional weaving of composite materials, and particularly relates to a three-dimensional preform weaving forming method. BACKGROUND

[0002] The application of composite materials has achieved the goal of lightweight of aerospace structures, and the amount of composite materials has become one of the symbols of the advancement of aerospace structures. In order to overcome the poor interlaminar performance of traditional composite materials, a three-dimensional preform woven composite material reinforcement is developed.

[0003] In the three-dimensional preform weaving technology of the related art, a plurality of guide rods are usually arranged in the Z direction, and the fiber bundle is woven and compacted layer by layer along the guide rods in the X-Y plane; when the target number of layers is reached, all the guide rods are removed, and the fiber bundle is woven in the X-Z or Y-Z plane along the arrangement path of the guide rods. The weaving cycle is long, which is not conducive to improving the production efficiency of the three-dimensional preform. SUMMARY

[0004] Therefore, the present application provides a three-dimensional preform weaving forming method to solve the problem of long weaving cycle and low production efficiency of the three-dimensional preform.

[0005] In a first aspect, the present application provides a three-dimensional preform weaving forming method, comprising the following steps:

[0006] Obtaining Z-direction guide array information and X-Y plane weaving path information of the three-dimensional preform;

[0007] According to the X-Y plane weaving path information, the Z-direction guide array is divided into a first region and a second region along the X-Y plane;

[0008] The guide rods are arranged in the first region, and the first fiber rods are arranged in the second region;

[0009] According to the X-Y plane weaving path information, the first fiber bundle is woven and compacted layer by layer along the Z direction until the preset parameters of the three-dimensional preform are reached;

[0010] The guide rods are removed, and the second fiber bundle locks the three-dimensional preform along the arrangement path of at least part of the guide rods.

[0011] Beneficial effects: Among them, the weaving path information of the X-Y plane specifically refers to the collection of fiber bundle laying paths of each layer of the preform in the X-Y plane; the Z-direction guiding array information specifically refers to a collection of arrangement paths arranged in a predetermined array manner, wherein each arrangement path extends along the Z-direction and is used to arrange rods to provide guidance for the weaving process. In the scheme, the Z-direction guiding array is divided into a first region and a second region according to the weaving path information of the X-Y plane, and a guiding rod is arranged in the first region and a first fiber rod is arranged in the second region. When the first fiber bundle is completed layer by layer and compacted and formed, only the guiding rod needs to be removed, and the second fiber bundle locks the first fiber rod in the preform along part of the arrangement path of the guiding rod, greatly reducing the number of replacement of the guiding rod, shortening the weaving cycle of the preform, and improving the production efficiency. In addition, since the first fiber rod is locked in the preform, the mixed weaving of the fiber rod and the fiber bundle is realized, and the existence of the fiber rod further improves the structural strength of the preform.

[0012] In an optional embodiment, in the step of dividing the Z-direction guiding array into a first region and a second region according to the weaving path information of the X-Y plane, the first region is surrounded by the first region.

[0013] Beneficial effects: The first region is surrounded by the second region, so that the guiding rod arranged in the periphery bears the tension of the fiber bundle in the weaving process, avoiding deformation of the first fiber rod arranged in the inner part due to stress, and ensuring the forming quality of the preform.

[0014] In an optional embodiment, in the step of obtaining the Z-direction guiding array information of the three-dimensional preform and the weaving path information of the X-Y plane, further comprising the steps of:

[0015] Layering the model of the three-dimensional preform along the Z-direction to obtain the cross-sectional profile information of each layer;

[0016] Generating the Z-direction guiding array according to the maximum cross-sectional profile information of the three-dimensional preform in the cross-sectional profile information of each layer;

[0017] Generating the weaving path of each layer of the X-Y plane according to the cross-sectional profile information of each layer and the Z-direction guiding array information.

[0018] Beneficial effects: According to the model of the three-dimensional preform, the cross-sectional profile information of each layer is obtained, and the Z-direction guiding array and the weaving path of each layer of the X-Y plane are generated, which not only has high precision, but also greatly reduces the workload and is easy to realize automatic production.

[0019] In an optional embodiment, before the step of arranging the first fiber bundle to weave and compact along the Z-direction layer by layer according to the weaving path information of the X-Y plane until the preset parameters of the three-dimensional preform are reached, further comprising the steps of:

[0020] According to the cross-sectional profile information of the bottommost layer of the three-dimensional preform along the Z direction, a first fiber rod layer is laid on the bottommost layer in the X-Y plane.

[0021] Beneficial effects: laying a first fiber rod layer on the bottommost layer of the preform can further increase the structural strength of the preform and improve the performance of the preform.

[0022] In an alternative embodiment, after the step of weaving and compacting the first fiber bundle layer by layer along the Z direction until the preset parameters of the three-dimensional preform are reached according to the weaving path information in the X-Y plane, the method further comprises the step of:

[0023] According to the cross-sectional profile information of the topmost layer of the three-dimensional preform along the Z direction, a second fiber rod layer is laid on the topmost layer in the X-Y plane.

[0024] Beneficial effects: laying a first fiber rod layer on the bottommost layer of the preform and a second fiber rod layer on the topmost layer can further improve the performance of the preform and facilitate the realization of the second fiber bundle locking the preform into a whole structure.

[0025] In an alternative embodiment, in the step of removing the guide rod and locking the three-dimensional preform with the second fiber bundle along the arrangement path of at least part of the guide rod, the first fiber rod layer, the woven layer of the first fiber bundle and the second fiber rod layer are sequentially locked in the second fiber bundle.

[0026] Beneficial effects: the woven layer of the first fiber bundle refers to the collection of all layers woven by the first fiber bundle in the preform. The woven layer composed of fiber bundles often has the characteristic of partial rebound after compaction and shaping. In this scheme, the woven layer of the first fiber bundle is locked between the first fiber rod layer and the second fiber rod layer, reducing or even eliminating the rebound after the preform is woven, greatly improving the forming quality of the preform.

[0027] In an alternative embodiment, in the X-Y plane, the fiber rods of the first fiber rod layer and the fiber rods of the second fiber rod layer are arranged in parallel.

[0028] Beneficial effects: arranging the fiber rods of the first fiber rod layer and the fiber rods of the second fiber rod layer in parallel facilitates providing a locking point for the second fiber bundle to realize sequentially locking the first fiber rod layer, the woven layer of the first fiber bundle and the second fiber rod layer in the second fiber bundle.

[0029] In an alternative embodiment, the second fiber bundle is provided with two groups, and the two groups of second fiber bundles are respectively locked at opposite ends of the first fiber rod layer and the second fiber rod layer.

[0030] Beneficial effects: the two second fiber bundles are locked at opposite ends of the first fiber rod layer and the second fiber rod layer respectively, which not only has high locking reliability, but also has high locking efficiency, and is convenient for improving the forming efficiency of the preform.

[0031] In an alternative embodiment, in the step of arranging the guide rods in the first region and arranging the first fiber rods in the second region, the material of the guide rods is stainless steel, or tungsten steel, or ceramic, or glass.

[0032] Beneficial effects: the guide rods made of stainless steel, or tungsten steel, or ceramic, or glass have the characteristics of anti-deformation, which can prevent the deformation of the Z-direction guide array during weaving, and ensure the forming quality of the preform.

[0033] In an alternative embodiment, in the step of obtaining the Z-direction guide array information and the weaving path information in the X-Y plane of the three-dimensional preform, the Z-direction guide array information includes the arrangement path of the guide rods and the first fiber rods, and the center distance between adjacent arrangement paths is 1.6mm-2.4mm.

[0034] Beneficial effects: the center distance between adjacent arrangement paths is in the range of 1.6mm-2.4mm, which can realize the weaving guide while ensuring the density of the preform, and improve the forming quality and performance of the preform. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0036] Figure 1 A flow chart of a three-dimensional preform weaving forming method according to an embodiment of the present application;

[0037] Figure 2 A Z-direction guide array plane structure diagram in a three-dimensional preform weaving forming method according to an embodiment of the present application;

[0038] Figure 3 A Z-direction guide array three-dimensional structure diagram in a three-dimensional preform weaving forming method according to an embodiment of the present application;

[0039] Figure 4 A three-dimensional preform structure diagram in a three-dimensional preform weaving forming method according to an embodiment of the present application.

[0040] Explanation of reference signs:

[0041] 1, first region; 2, second region; 3, guide rod; 4, first fiber rod; 5, guide template; 6, first fiber bundle; 7, second fiber bundle; 8, first fiber rod layer; 9, second fiber rod layer. DETAILED DESCRIPTION

[0042] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] The demand for energy saving and emission reduction is increasing in the whole society, and lightweight materials are of great significance, so many researchers are committed to developing lightweight technology of materials. Since the 1960s, various three-dimensional structure fiber reinforced composite materials have been developed, because they have the advantages of high damage tolerance, good interlaminar performance, flexible structure design, etc., and are widely used in aerospace, national defense and military industry and other fields.

[0044] In the related art three-dimensional preform weaving technology, a plurality of guide rods are usually arranged in the Z direction, and the fiber bundle is woven and compacted layer by layer along the guide rods in the X-Y plane; when weaving to the target layer, all the guide rods are taken out, and the fiber bundle is woven in the X-Z or Y-Z plane along the arrangement path of the guide rods. The weaving cycle is long, which is not conducive to improving the production efficiency of the three-dimensional preform.

[0045] Based on this, the present application provides a three-dimensional preform weaving forming method to improve the production efficiency of the three-dimensional preform.

[0046] The embodiments of the present application will be described below in conjunction with Figures 1 to 4 .

[0047] According to the embodiments of the present application, referring to Figure 1 , in one aspect, a three-dimensional preform weaving forming method is provided, comprising the following steps:

[0048] S10: obtaining the Z-direction guide array information of the three-dimensional preform and the weaving path information in the X-Y plane;

[0049] S20: according to the weaving path information in the X-Y plane, the Z-direction guide array is divided into a first region 1 and a second region 2 along the X-Y plane;

[0050] S30: arranging guide rods 3 in the first region 1 and arranging first fiber rods 4 in the second region 2;

[0051] S40: According to the weaving path information of the X-Y plane, the first fiber bundle 6 is layered and compacted along the Z direction to form a three-dimensional preform.

[0052] S50: The guide rod 3 is removed, and the second fiber bundle 7 is locked in the three-dimensional preform along the arrangement path of the guide rod 3.

[0053] It should be noted that the above description is illustrated by referring to Figure 3 and Figure 4 , wherein the Z direction refers to the Z direction in Figure 3 and Figure 4 , and the X-Y plane refers to the plane formed by the X and Y directions.

[0054] Further, the weaving path information of the X-Y plane specifically refers to the collection of fiber bundle laying paths of each layer of the preform in the X-Y plane; the Z direction guide array information specifically refers to the collection of arrangement paths arranged in a predetermined array manner, wherein each arrangement path extends along the Z direction and is used to arrange the rod to provide guidance for the weaving process.

[0055] In this scheme, the Z direction guide array is divided into a first region 1 and a second region 2 according to the weaving path information of the X-Y plane, and the guide rod 3 is arranged in the first region 1 and the first fiber rod 4 is arranged in the second region 2. After the first fiber bundle 6 completes the weaving and compacts layer by layer, only the guide rod 3 needs to be removed, and the second fiber bundle 7 locks the first fiber rod 4 in the preform along part of the arrangement path of the guide rod 3, greatly reducing the number of replacement of the guide rod 3, shortening the weaving period of the preform, and improving the production efficiency. In addition, since the first fiber rod 4 is locked in the preform, the mixed weaving of the fiber rod and the fiber bundle is realized, and the existence of the fiber rod further improves the structural strength of the preform.

[0056] In some embodiments, referring to Figure 2 , in step S20, the first region 1 surrounds the second region 2, so that the guide rod 3 arranged on the periphery bears the tension of the fiber bundle in the weaving process, avoiding the deformation of the first fiber rod 4 arranged in the inner part due to stress, and ensuring the forming quality of the preform.

[0057] Specifically, in step S20, it can be determined whether each arrangement path in the Z direction guide array information is stressed according to the weaving path information of the X-Y plane. The area in the Z direction guide array where the rod is almost not affected by the tension of the fiber bundle during the fiber laying process can be divided into the first region 1, and the area that will be deformed due to the tension of the fiber bundle can be divided into the second region 2.

[0058] In some embodiments, in step S10, the Z-direction guiding array information includes the arrangement paths of the guiding rods 3 and the first fiber rods 4, and the center distance between adjacent arrangement paths ranges from 1.6 mm to 2.4 mm, which can ensure the compactness of the preform and improve the forming quality and performance of the preform while achieving the weaving guidance.

[0059] In step S30, the material of the guiding rods 3 can be stainless steel, tungsten steel, ceramic or glass, which can improve the deformation resistance and prevent the Z-direction guiding array from deforming during the weaving process to ensure the forming quality of the preform. In an example, the material of the first fiber rods 4 can be a rod material composed of resin and fiber bundles, and the fiber volume fraction can range from 50% to 75%.

[0060] In step S40, the material of the first fiber bundles 6 can be carbon fiber, quartz fiber, glass fiber or aramid fiber.

[0061] In step S50, the material of the second fiber bundles 7 can be carbon fiber, quartz fiber, glass fiber or aramid fiber. It should be noted that the first fiber bundles 6 and the second fiber bundles 7 can have the same material or different materials, which is not limited in the present application.

[0062] In some embodiments, in step S10, the Z-direction guiding array information includes the arrangement paths of the guiding rods 3 and the first fiber rods 4, and the center distance between adjacent arrangement paths ranges from 1.6 mm to 2.4 mm, which can ensure the compactness of the preform and improve the forming quality and performance of the preform while achieving the weaving guidance. Figures 2 to 4 As shown in the figure, the Z-direction guiding array is configured as a square in the X-Y plane, and in step S20, the arrangement paths of the guiding rods 3 in the first region 1 include two columns of first arrangement paths arranged along the X direction and two columns of second arrangement paths arranged along the Y direction. Figure 2 As shown in the figure, the first region 1 surrounds the second region 2 in the X-Y plane to form a square structure. Figure 3 As shown in the figure, the first region 1 surrounds the second region 2 in the X-Y plane to form a square structure. Figure 3 As shown in the figure, in step S30, the arrangement paths of the guiding rods 3 in the first region 1 include two columns of first arrangement paths arranged along the X direction and two columns of second arrangement paths arranged along the Y direction. In step S50, as shown in the figure, the second fiber bundles 7 can be arranged in the two columns of second arrangement paths to lock the three-dimensional preform. In an example, the locking mode of the second fiber bundles 7 can be a lock type or a chain type. Figure 4

[0063] Further, in some embodiments, in step S10, the following steps are further included:

[0064] S11: layering the model of the three-dimensional preform along the Z direction to obtain the cross-sectional profile information of each layer;

[0065] S12: generating the Z-direction guiding array according to the maximum cross-sectional profile information of the three-dimensional preform in the cross-sectional profile information of each layer;

[0066] ​S13: generating the weaving path of each layer in the X-Y plane according to the cross-sectional profile information of each layer and the Z-direction guiding array information.

[0067] The weaving path of each layer in the X-Y plane refers to the laying path of the fiber bundle in each layer in the X-Y plane. In this embodiment, the cross-sectional profile information of each layer is obtained according to the model of the three-dimensional preform, and the Z-direction guiding array and the weaving path of each layer in the X-Y plane are generated, which not only has high accuracy, but also greatly reduces the workload and is easy to realize automatic production.

[0068] It should be noted that in step S11, the cross-sectional profile information of each layer is obtained according to the model of the three-dimensional preform, and the cross-sectional profile of each layer can be the same or different, which is not limited in the present application.

[0069] Referring to Figure 3 The two layers of guiding templates 5 are arranged along the Z direction, and the Z-direction guiding array generated in step S12 is arranged in the two layers of guiding templates 5, and the weaving path of each layer in the X-Y plane is located between the two layers of guiding templates 5.

[0070] Further, in step S13, the present application does not limit the laying angle of the first fiber bundle 6 in the weaving path of each layer in the X-Y plane, as long as the weaving of each layer of the preform can be completed in the Z-direction guiding array.

[0071] For example, in the X-Y plane, the arrangement mode of the Z-direction guiding array is a square, and the fiber bundle laying angle can be 0° or 45° or 90° or 135°. For example, in the X-Y plane, the arrangement mode of the Z-direction guiding array is an equilateral triangle, and the fiber bundle laying angle can be 0° or 60° or 120.

[0072] Further, in step S40, the preset parameters of the three-dimensional preform include the target number of layers, the target thickness and the like of the three-dimensional preform weaving. In some embodiments, before step S40, it further includes the following step:

[0073] According to the cross-sectional profile information of the bottom layer of the three-dimensional preform along the Z direction, a first fiber rod layer 8 is laid in the bottom layer in the X-Y plane.

[0074] In this embodiment, laying a first fiber rod layer 8 in the bottom layer of the three-dimensional preform can further increase the structural strength of the preform and improve the performance of the preform.

[0075] For example, the first fiber rod layer 8 can be a second fiber rod laid in the X-Y plane, and the second fiber rod can be a rod material composed of resin and fiber bundle, wherein the fiber volume fraction can be 50%-75%.

[0076] Further, in some embodiments, after step S40, further comprising a step of:

[0077] According to the cross-sectional profile information of the topmost layer of the three-dimensional preform along the Z direction, the second fiber rod layer 9 is laid in the topmost layer in the X-Y plane.

[0078] In this embodiment, a first fiber rod layer 8 is laid in the bottommost layer of the preform, and a second fiber rod layer 9 is laid in the topmost layer, which can further improve the performance of the preform and facilitate the realization of the second fiber bundle 7 locking the preform into a whole structure.

[0079] For example, the second fiber rod layer 9 can be a third fiber rod laid in the X-Y plane, and the third fiber rod can be a rod material composed of resin and fiber bundle, wherein the fiber volume fraction can be 50%-75%.

[0080] In some embodiments, in step S50, the first fiber rod layer 8, the woven layer of the first fiber bundle 6 and the second fiber rod layer 9 are sequentially locked in the second fiber bundle 7. The woven layer of the first fiber bundle 6 specifically refers to the collection of all layers formed by weaving the first fiber bundle 6 in the preform. The woven layer composed of fiber bundles often has the characteristic of partially rebounding after compaction and forming. In this embodiment, the woven layer of the first fiber bundle 6 is locked between the first fiber rod layer 8 and the second fiber rod layer 9, which reduces or even eliminates the rebound of the preform after weaving is completed, greatly improving the forming quality of the preform.

[0081] In some embodiments, the fiber rods (i.e. second fiber rods) of the first fiber rod layer 8 and the fiber rods (i.e. third fiber rods) of the second fiber rod layer 9 are arranged in parallel, so as to provide a locking point of force for the second fiber bundle 7, and realize the sequential locking of the first fiber rod layer 8, the woven layer of the first fiber bundle 6 and the second fiber rod layer 9 in the second fiber bundle 7.

[0082] For example, as shown in the figure, the second fiber rod and the third fiber rod can be arranged in the Y direction. Figure 4 For example, as shown in the figure, the second fiber rod and the third fiber rod can be arranged in the Y direction.

[0083] Further, in some embodiments, the second fiber bundle 7 is provided with two groups, and the two groups of second fiber bundles 7 are respectively locked at opposite ends of the first fiber rod layer 8 and the second fiber rod layer 9, which improves the reliability of locking and has high locking efficiency, and facilitates the improvement of the forming efficiency of the preform.

[0084] For example, the second fiber rod and the third fiber rod can be arranged in the Y direction, and the two groups of fiber bundles are respectively locked at opposite ends of the second fiber rod and the third fiber rod in the X-Y plane.

[0085] The three-dimensional preform weaving forming method of the application greatly reduces the replacement number of the guide rods 3, shortens the weaving period of the preform, and improves the production efficiency by dividing the Z-direction guide array into a first area 1 and a second area 2, arranging the guide rods 3 in the first area 1, and arranging the first fiber rods 4 in the second area 2. Moreover, the mixed weaving of the fiber bundle and the fiber rod in the three-dimensional preform greatly improves the structural performance of the product and guarantees the forming quality of the three-dimensional preform.

[0086] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A three-dimensional preform weaving process, characterized by, The method comprises the following steps: obtaining the Z-direction guiding array information of the three-dimensional preform and the weaving path information of the X-Y plane; according to the weaving path information of the X-Y plane, the Z-direction guiding array is divided into a first area (1) and a second area (2) along the X-Y plane; a guiding rod (3) is arranged in the first area (1) and a first fiber rod (4) is arranged in the second area (2); according to the weaving path information of the X-Y plane, the first fiber bundle (6) is woven and compacted layer by layer along the Z-direction until the preset parameters of the three-dimensional preform are reached; the guiding rod (3) is removed, and the second fiber bundle (7) locks the three-dimensional preform along at least part of the arrangement path of the guiding rod (3).

2. The three-dimensional preform textile forming method according to claim 1, wherein, In the step of dividing the Z-direction guiding array into a first area (1) and a second area (2) according to the weaving path information of the X-Y plane, the first area (1) surrounds the second area (2).

3. The three-dimensional preform textile forming method according to claim 1 or 2, characterized in that, In the step of obtaining the Z-direction guiding array information of the three-dimensional preform and the weaving path information of the X-Y plane, the method further comprises the following steps: the model of the three-dimensional preform is processed layer by layer along the Z-direction to obtain the cross-sectional profile information of each layer; the Z-direction guiding array is generated according to the maximum cross-sectional profile information of the three-dimensional preform in the cross-sectional profile information of each layer; the weaving path of each layer of the X-Y plane is generated according to the cross-sectional profile information of each layer and the Z-direction guiding array information.

4. The three-dimensional preform textile forming method according to claim 3, wherein Before the step of weaving and compacting the first fiber bundle (6) layer by layer along the Z-direction until the preset parameters of the three-dimensional preform are reached according to the weaving path information of the X-Y plane, the method further comprises the following step: a first fiber rod layer (8) is laid on the bottom layer of the X-Y plane according to the cross-sectional profile information of the bottom layer of the three-dimensional preform along the Z-direction.

5. The three-dimensional preform textile forming method according to claim 4, wherein After the step of weaving and compacting the first fiber bundle (6) layer by layer along the Z-direction until the preset parameters of the three-dimensional preform are reached according to the weaving path information of the X-Y plane, the method further comprises the following step: a second fiber rod layer (9) is laid on the top layer of the X-Y plane according to the cross-sectional profile information of the top layer of the three-dimensional preform along the Z-direction.

6. The three-dimensional preform textile forming method according to claim 5, wherein, In the step of removing the guiding rod (3) and locking the three-dimensional preform along at least part of the arrangement path of the guiding rod (3) by the second fiber bundle (7), the first fiber rod layer (8), the weaving layer of the first fiber bundle (6), and the second fiber rod layer (9) are sequentially locked in the second fiber bundle (7).

7. The three-dimensional preform textile forming method according to claim 6, wherein In the X-Y plane, the fiber rods of the first fiber rod layer (8) and the second fiber rod layer (9) are arranged in parallel.

8. The three-dimensional preform textile forming method according to claim 7, wherein, The second fiber bundle (7) is provided with two groups, and the two groups of the second fiber bundle (7) are respectively locked at opposite ends of the first fiber rod layer and the second fiber rod layer.

9. The three-dimensional preform textile forming method according to claim 1, wherein, In the step of arranging the guiding rod (3) in the first area (1) and arranging the first fiber rod (4) in the second area (2), the material of the guiding rod (3) is stainless steel, tungsten steel, ceramic, or glass.

10. The three-dimensional preform textile forming process of claim 1 wherein, In the step of acquiring the Z-direction guiding array information of the three-dimensional preform and the weaving path information of the X-Y plane, the Z-direction guiding array information includes the arrangement path of the guiding rod (3) and the first fiber rod (4), and the center distance range between adjacent arrangement paths is 1.6 mm-2.4 mm.

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