Three-dimensional braided fabric based on triaxial distribution and preparation method thereof

Abstract

The present application relates to a three-dimensional braided fabric based on triaxial distribution and its preparation method, which relates to the field of textiles. The cross section of the three-dimensional braided fabric is hexagonal, the main braided yarns of the three-dimensional braided fabric are arranged in a regular hexagon, and the side yarns are arranged at intervals along the outside of the regular hexagon. The three-dimensional braided fabric is interwoven with six braided yarns, and the braided yarns are arranged in the y-axis, y-axis and y-axis of the first plane. 60 o axis, y ‑60 o The yarns are interwoven in three directions and form a three-dimensional braided fabric along the Z axis perpendicular to the first plane. This braided structure helps to enhance the strength and stability of the overall braided structure, evenly distribute the yarns and maximize the utilization of the yarns, thereby reducing the cost of the braided fabric.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and in particular to a three-dimensional braided fabric based on triaxial distribution and a preparation method thereof. Background Art

[0002] Conventional braiding, an ancient fiber processing method, has evolved into a variety of braided structures, which are now widely used in daily life. With the demand for high-speed production and energy conservation and emission reduction across various industries, the integration of braiding processing methods with high-performance fibers, particularly high-strength and high-modulus materials such as aramid, carbon fiber, and high-strength and high-modulus polyethylene, has brought new development opportunities to the braiding industry. High-performance fiber braids offer advantages such as lightweight, high strength and high modulus, and strong designability, making them widely used in various engineering fields. For example, in the marine equipment field, high-performance fiber braids can be used to manufacture lightweight hull structures and marine equipment, improving ship performance and fuel efficiency. In the power construction field, high-performance fiber braids can be used to manufacture insulation materials for power lines and protective covers for power equipment, enhancing the safety and reliability of power systems. Therefore, the appropriate braiding structure for high-performance fiber braids under different operating conditions is crucial to meeting the needs of various engineering fields. They have a wide range of applications and promising development prospects. With continuous technological advancement and innovation, high-performance fiber braids will continue to play an important role in various fields, bringing greater convenience and benefits to people's lives and work.

[0003] Currently, longitudinal and transverse braiding and rotary braiding are the primary methods for producing braided fabrics. The longitudinal and transverse braiding method typically utilizes a four-step or multi-step braiding process. Rotary braiding can be used in two-step, four-step, or multi-step processes to produce three-dimensional braids, as well as two-dimensional braids. These methods are suitable for producing braids with rectangular, circular, and irregular cross-sections, and are generally well-suited to engineering needs.

[0004] However, the above methods have the following drawbacks: For example, in the four-step method, the yarns are woven back and forth from the inside to the outside, and friction or cutting on the outer surface of the preform will cause the structure to disintegrate. The weaving speed is slow, and complex mechanical devices are required to implement it. The actuator moves in a discrete manner. The outer layer of the cylindrical reinforcement woven by the four-step method also has a "rattan twist" effect, which affects the conversion rate of the fiber strength of the material. The special-shaped cross-section material formed by the four-step method cannot form a stable structure with three yarns distributed equidistantly because the yarns are arranged in both the vertical and horizontal directions during weaving. This produces uneven internal stress and causes potential deformation of the reinforcement material. The two-step method braided material has large gaps and a low fiber volume ratio, resulting in insufficient contribution of the braided yarn to the axial strength of the material. In addition, when using the rotary braiding method to produce double-braided and multi-braided ropes, the structure has interfaces between layers, which also affects the performance of the braided fabric. Therefore, it is of great significance to research and develop more advantageous braided fabric structures and braiding methods. Summary of the Invention

[0005] The purpose of this application is to provide a three-dimensional braided fabric based on triaxial distribution and a preparation method thereof, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above objectives, the technical solutions adopted in this application are:

[0007] In the first aspect, the present application provides a three-dimensional braided fabric based on triaxial distribution, wherein the cross section of the three-dimensional braided fabric is hexagonal, the braided yarn main body of the three-dimensional braided fabric is arranged in a regular hexagon, and the side yarns are arranged at intervals along the outside of the regular hexagon, and the three-dimensional braided fabric is interwoven with braided yarns with a period of six times, and the braided yarns are arranged in the y-axis, y-axis and y-axis of the first plane. 60° Axis, y -60° The three-dimensional braided fabric is interwoven in three directions along the Z axis perpendicular to the first plane to form the overall structure of the three-dimensional braided fabric.

[0008] In a possible implementation, inside the main braided yarns of the three-dimensional braided fabric, each yarn is in close contact with six surrounding yarns.

[0009] In a second aspect, the present application provides a method for preparing a three-dimensional braid based on triaxial distribution, the method being applicable to any of the three-dimensional braids based on triaxial distribution as described above, wherein the method defines the first plane as a plane perpendicular to the horizontal plane, and the method comprises:

[0010] S1. Determine the type and quantity of yarn carriers;

[0011] S2, will be located at y -60° The yarn carrier on the shaft moves one yarn carrier position to the lower left;

[0012] S3, will be located at y60° axis and the y 60° The yarn carriers on the even numbered rows on both sides of the axis move one yarn carrier position to the upper left, and at the same time 60° The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower right;

[0013] S4, moving the yarn carriers on the y-axis and the even-numbered columns on both sides of the y-axis downward by one yarn carrier position, and simultaneously moving the yarn carriers on the odd-numbered columns on both sides of the y-axis upward by one yarn carrier position;

[0014] S5, will be located at y -60° axis and the y -60° The yarn carriers on the even numbered rows on both sides of the axis move one yarn carrier position to the upper right, and at the same time -60° The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower left;

[0015] S6, moving the yarn carrier on the y-axis upward by one yarn carrier position;

[0016] S7, will be located at y 60° The yarn carrier on the shaft moves one yarn carrier position to the lower right and returns to the starting position;

[0017] S8. Repeat steps S2 to S7 several times to make the yarns weave together and move in a plane. At the same time, the braided yarns are continuously pulled along the Z axis by the pulling mechanism and leave the braiding area, eventually forming a three-dimensional braid based on triaxial distribution.

[0018] In a possible implementation, in step S1, determining the type of the yarn carrier includes:

[0019] The method uses two types of yarn carriers during the weaving process, namely a main yarn carrier and a diverter yarn carrier, each yarn carrier carrying a braiding yarn.

[0020] In one possible implementation, determining the number of yarn carriers includes:

[0021] The number of the main yarn carriers is determined, and the number of the steering yarn carriers is determined.

[0022] In a possible implementation, determining the number of the main yarn carriers includes:

[0023] The main yarn carriers are arranged into a hexagonal three-dimensional braid with a side length of m, with the direction perpendicular to the horizontal plane as the y-axis and the center point as point o. The main yarn carriers evenly arrange 2m-1 yarns on the y-axis to form the main arrangement axis on the y-axis. The adjacent columns are staggered in sequence, and the number of main yarn carriers on each column is reduced by 1, until the last column has m main yarn carriers, thereby forming a y-axis. 60° 、y -60° Two main arrangement shaft main body yarn carriers, the total number of the main body yarn carriers is 3m(m-1)+1.

[0024] In a possible implementation, determining the number of the steering yarn carriers includes:

[0025] The first steering yarn carrier is arranged above the main yarn carrier along the y-axis, and then the next steering yarn carrier is arranged every other yarn carrier in the clockwise direction until 3m / 2 steering yarn carriers are arranged; in the counterclockwise direction of the first steering yarn carrier, the next steering yarn carrier is arranged every other yarn carrier until 3m / 2 steering yarn carriers are arranged; the total number of steering yarn carriers is 3m.

[0026] In a possible implementation, the turning yarn carrier is used to change the direction of the yarn during the weaving process.

[0027] The beneficial effects of the technical solution provided by this application include at least:

[0028] 1. The three-dimensional braided fabric based on triaxial distribution provided in the present application is a special braided structure, in which the axes of the braided yarns are arranged in the form of an equilateral triangle with three yarns. The interweaving density between the yarns is high, and the structure of the braided fabric is tighter. This arrangement helps to increase the fiber volume ratio of the material, making it more able to withstand external stress and load; in addition, the structural stability of the three-dimensional braided fabric with triaxial distribution is also improved. Due to the arrangement of the yarns, the fiber volume inside the material is relatively high, which means that more fibers can be used to support and stabilize the entire structure, and it has good tensile, compression and bending resistance. This high fiber volume ratio makes the material's potential energy for deformation smaller, thereby making the entire structure more stable.

[0029] 2. The uniformity of the yarn arrangement of the three-dimensional braided fabric based on triaxial distribution provided by the present application prevents the resulting fabric from having a "rattan twist" effect. The rattan twist effect, that is, the yarns in the fabric are twisted or improperly interwoven, will affect the uniformity and strength conversion rate of the fabric, making the appearance of the fabric uneven or wrinkled. Therefore, by maintaining the uniformity of the yarn arrangement, the fiber axial orientation and the fiber strength conversion rate of the braided fabric can be improved, and the resulting braided fabric usually has higher product quality and lightweight characteristics.

[0030] 3. The three-dimensional braided fabric based on triaxial distribution provided by the present application has high specific strength and specific stiffness, high fiber orientation and yarns are distributed in an equilateral stable state of three yarns. This layout of the yarns achieves a balanced force distribution between the yarns, helps to enhance the strength and high durability of the fabric, and makes the axial strength of the fabric reach the extreme value of the braided fabric woven with all yarns. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0032] Figure 1 A schematic diagram of a simulation structure of a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0033] Figure 2 A flow chart showing a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0034] Figure 3 A schematic diagram showing the initial position of a main yarn carrier and the movement direction of the yarn carrier in step 1 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0035] Figure 4 A schematic diagram of a weaving process showing the movement direction of a yarn carrier in steps 1 and 2 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0036] Figure 5 A schematic diagram of a weaving process showing the movement direction of the yarn carrier in steps 2 and 3 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0037] Figure 6 A schematic diagram of a weaving process showing the movement direction of a yarn carrier in steps 3 and 4 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0038] Figure 7 A braiding schematic diagram showing the movement direction of the yarn carrier in steps 4 and 5 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown;

[0039] Figure 8 A weaving schematic diagram of the yarn carrier movement direction in steps five and six of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings of the present application specification, and the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from specific parts, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application specification, the meaning of "multiple" is two or more.

[0042] First, a brief introduction to the terms involved in the embodiments of this application is given:

[0043] A yarn carrier is a knitting machine component that guides the yarn from the spindle or other yarn supply device to the fabric forming area of ​​the knitting machine. It usually includes a device to guide the yarn to ensure smooth yarn transfer to the fabric forming area.

[0044] The pulling mechanism refers to a mechanical system used to control and adjust the tension and density of the fabric in a weaving machine. This mechanism is usually composed of a series of rollers, tensioning devices, transmission systems, etc. The degree of pulling of the fabric is controlled by adjusting the movement of these components, thereby affecting the density and texture of the fabric.

[0045] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0046] Figure 1 The schematic diagram of the simulation structure of a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown. The cross-section of the three-dimensional braided fabric is hexagonal. The main body of the braided yarn of the three-dimensional braided fabric is arranged in a regular hexagon. The side yarns are arranged at intervals along the outside of the regular hexagon. The three-dimensional braided fabric is interwoven with braided yarns with a period of six times. The braided yarns are arranged in the y-axis, y-axis and y-axis of the first plane. 60° Axis, y -60° The three-dimensional braid is interwoven in three directions along the Z axis perpendicular to the first plane to form an overall structure of the three-dimensional braid.

[0047] Specifically, inside the main braided yarns of the three-dimensional braid, each yarn is in close contact with the surrounding six yarns.

[0048] In simple terms, 60° axis and y -60° The axes are located on both sides of the y-axis, and the angle between them and the y-axis is 60 degrees.

[0049] In the embodiment of the present application, the cross-section of the three-dimensional braid is hexagonal, that is, a stable structure of an equilateral triangle with three adjacent axes is formed. This braided structure helps to enhance the strength and stability of the overall braided structure, evenly distribute the yarns and maximize the utilization of the yarns, reduce the cost of the braid, etc.

[0050] Figure 2 A flowchart of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown. The method is applicable to the three-dimensional braided fabric based on triaxial distribution as described above. The method defines a first plane as a plane perpendicular to a horizontal plane to carry out the following steps. The method includes the following steps:

[0051] Step S1, determining the type of yarn carrier and the number of yarn carriers;

[0052] Step S2: Set the -60° The yarn carrier on the shaft moves one yarn carrier position to the lower left;

[0053] Step S3: Set the 60° axis and y 60° The yarn carriers on the even numbered columns on both sides of the axis move one yarn carrier position to the upper left, and at the same time 60° The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower right;

[0054] Step S4, moving the yarn carriers on the y-axis and the even-numbered columns on both sides of the y-axis downward by one yarn carrier position, and simultaneously moving the yarn carriers on the odd-numbered columns on both sides of the y-axis upward by one yarn carrier position;

[0055] Step S5: Set the -60° axis and y -60° The yarn carriers on the even numbered columns on both sides of the axis move one yarn carrier position to the upper right, and at the same time -60° The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower left;

[0056] Step S6, moving the yarn carrier on the y-axis upward by one yarn carrier position;

[0057] Step S7: Set the 60°The yarn carrier on the shaft moves one yarn carrier position to the lower right and returns to the starting position;

[0058] Step S8, repeat steps S2 to S7 several times to make the yarns weave together and move in a plane. At the same time, the braided yarns are continuously pulled along the Z axis by the pulling mechanism and leave the braiding area, eventually forming a three-dimensional braided fabric based on triaxial distribution.

[0059] Specifically, in step S1, determining the type of yarn carrier includes: using two types of yarn carriers during the weaving process, namely, a main yarn carrier and a diverting yarn carrier, each yarn carrier carrying a knitting yarn. Determining the number of yarn carriers includes: determining the number of main yarn carriers and determining the number of diverting yarn carriers. The diverting yarn carriers are used to change the direction of the yarn during the weaving process.

[0060] Further, determining the number of main yarn carriers includes:

[0061] The main yarn carriers are arranged into a hexagonal three-dimensional braid with a side length of m. The direction perpendicular to the horizontal plane is the y-axis and the center point is point o. The main yarn carriers evenly arrange 2m-1 yarns on the y-axis to form the main arrangement axis on the y-axis. The adjacent columns are staggered in sequence, and the number of main yarn carriers on each column decreases by 1, until the last column has m main yarn carriers, thus forming a y-axis. 60° 、y -60° There are two main arrangement shaft main body yarn carriers, and the total number of main body yarn carriers is 3m(m-1)+1.

[0062] Furthermore, the number of turning yarn carriers is determined, including:

[0063] The first steering yarn carrier is arranged above the main yarn carrier along the y-axis, and then the next steering yarn carrier is arranged every other yarn carrier in the clockwise direction until 3m / 2 steering yarn carriers are arranged; in the counterclockwise direction of the first steering yarn carrier, the next steering yarn carrier is arranged every other yarn carrier until 3m / 2 steering yarn carriers are arranged; the total number of steering yarn carriers is 3m.

[0064] It can be understood that, before step S2, the process further includes: determining the initial position of the main yarn carrier.

[0065] In order to better understand the present application, the present application is further described below in conjunction with the accompanying drawings and a specific embodiment. It should be noted that the embodiment described in the specific embodiment is only a part of the embodiment of the present application and does not limit the scope of protection of the present application.

[0066] Figure 3A schematic diagram showing the initial position of a main yarn carrier and the movement direction of the yarn carrier in step 1 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown; Figure 4 A schematic diagram of a weaving process showing the movement direction of a yarn carrier in steps 1 and 2 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown; Figure 5 A schematic diagram of a weaving process showing the movement direction of the yarn carrier in steps 2 and 3 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown; Figure 6 A schematic diagram of a weaving process showing the movement direction of a yarn carrier in steps 3 and 4 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown; Figure 7 A braiding schematic diagram showing the movement direction of the yarn carrier in steps 4 and 5 of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown; Figure 8 A weaving schematic diagram of the yarn carrier movement direction in steps five and six of a method for preparing a three-dimensional braided fabric based on triaxial distribution provided by an exemplary embodiment of the present application is shown.

[0067] Specifically, taking the creation of a hexagonal three-dimensional braided fabric with a side length of m as an example, first determine the initial position of the main yarn carrier, refer to Figure 3 , 37 main yarn carriers (grey parts in the figure) are distributed on the three axes with an angle of 60 degrees as follows: with point o as the center, 7 main yarn carriers are arranged on the y axis, and 6, 5 and 4 main yarn carriers are arranged on the left and right sides of the y axis respectively, and the y axis is formed accordingly. 60° Axis, y -60° Arrangement of the main yarn carrier in the two directions of the axis. Further, the 12 steering yarn carriers (white parts in the figure) on the periphery of the main yarn carrier are arranged as follows: the first steering yarn carrier is arranged along the Y axis above the main yarn carrier, and then a steering yarn carrier is arranged in sequence with one yarn carrier position in the clockwise direction, and 6 steering yarn carriers are arranged in this direction; then, a steering yarn carrier is arranged counterclockwise with one yarn position adjacent to the left yarn position of the yarn carrier arranged above the y axis, and 6 steering yarn carriers are also arranged in the reverse direction. The total number of steering yarn carriers is 12, which can realize the required steering function. After meeting the above conditions, perform the following specific steps:

[0068] Step 1: Move the -60° All yarn carriers on the axis move one yarn carrier position to the lower left, such as Figure 3 As shown in the direction of the arrow, Figure 4 The arrangement diagram of the yarn carrier shown;

[0069] Step 2: Move the60° axis and y 60° The yarn carriers on the even numbered rows on both sides of the axis move upward to the left, and at the same time 60° The yarn carriers on the odd-numbered columns on both sides of the axis move one yarn carrier position to the lower right, such as Figure 4 As shown in the direction of the arrow, Figure 5 The arrangement diagram of the yarn carrier shown;

[0070] Step 3: Move the yarn carriers on the y-axis and the even-numbered columns on both sides of the y-axis downward by one yarn carrier position, and move the yarn carriers on the odd-numbered columns on both sides of the y-axis upward by one yarn carrier position, as shown in the following figure. Figure 5 Move in the direction of the arrow to form Figure 6 The arrangement diagram of the yarn carrier shown;

[0071] Step 4: Move the -60° axis and y -60° The yarn carriers on the even numbered columns on both sides of the axis move one yarn carrier position to the upper right, and at the same time -60° The yarn carriers on the odd-numbered columns on both sides of the axis move one yarn carrier position to the lower left, such as Figure 6 As shown in the direction of the arrow, Figure 7 The yarn carrier arrangement diagram shown in ;

[0072] Step 5: Move the yarn carrier on the y-axis upward by one yarn carrier position, as shown in the following example: Figure 7 As shown in the direction of the arrow, Figure 8 The arrangement diagram of the yarn carrier shown;

[0073] Step 6: Place the 60° The yarn carrier on the shaft moves one yarn carrier position to the lower right, that is, returns to the initial position, such as Figure 8 As shown in the direction of the arrow;

[0074] The yarn carrier performs a cyclic motion by continuously repeating the above steps, realizing the planar motion of the yarns weaving each other. During this planar motion, the braided yarn is continuously pulled along the Z axis by the pulling mechanism and leaves the braiding area, eventually forming a three-dimensional braided fabric with a three-axial distribution. The three-dimensional simulation diagram is shown in FIG. Figure 1 shown.

[0075] To sum up, on the one hand, the three-dimensional braid based on triaxial distribution provided by the present application is a special braided structure, the axis of the braided yarn is arranged in the form of an equilateral triangle with three yarns, the interweaving density between the yarns is high, and the structure of the braid is tighter. This arrangement helps to increase the fiber volume ratio of the material, making it more able to withstand external stress and load; in addition, the structural stability of the three-dimensional braid with triaxial distribution is also improved. Due to the arrangement of the yarns, the fiber volume inside the material is relatively high, which means that more fibers can be used to support and stabilize the entire structure, and it has good tensile, compression and bending resistance. This high fiber volume ratio makes the material's potential energy for deformation smaller, thereby making the entire structure more stable. On the other hand, the uniformity of the yarn arrangement of the three-dimensional braided fabric based on triaxial distribution provided by the present application prevents the resulting fabric from having a "rattan twist" effect. The rattan twist effect, that is, the yarns in the fabric are twisted or improperly interwoven, will affect the uniformity and strength conversion rate of the fabric, making the fabric appearance uneven or wrinkled. Therefore, by maintaining the uniformity of the yarn arrangement, the fiber axial orientation and the fiber strength conversion rate of the braided fabric can be improved, and the braided fabric produced generally has higher product quality and lightweight characteristics. On the other hand, the three-dimensional braided fabric based on triaxial distribution provided by the present application has high specific strength and specific stiffness, high fiber orientation and yarns are distributed in an equilateral stable state of three yarns. This layout of the yarns achieves a balanced force distribution between the yarns, helps to enhance the strength and high durability of the fabric, and makes the axial strength of the fabric reach the extreme value of a braided fabric woven with all yarns.

[0076] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for preparing a three-dimensional braided fabric based on triaxial distribution, characterized in that: The method defines the first plane as a plane perpendicular to the horizontal plane, and the method comprises the steps of: S1. Determine the type and quantity of yarn carriers; S2, will be located at y -60 o The yarn carrier on the shaft moves one yarn carrier position to the lower left; S3, will be located at y 60 o axis and the y 60 o The yarn carriers on the even numbered rows on both sides of the axis move one yarn carrier position to the upper left, and at the same time 60 o The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower right; S4, moving the yarn carriers on the y-axis and the even-numbered columns on both sides of the y-axis downward by one yarn carrier position, and simultaneously moving the yarn carriers on the odd-numbered columns on both sides of the y-axis upward by one yarn carrier position; S5, will be located at y -60 o axis and the y -60 o The yarn carriers on the even numbered rows on both sides of the axis move one yarn carrier position to the upper right, and at the same time -60 o The yarn carriers on the odd-numbered columns on both sides of the shaft move one yarn carrier position to the lower left; S6, moving the yarn carrier on the y-axis upward by one yarn carrier position; S7, will be located at y 60 o The yarn carrier on the shaft moves one yarn carrier position to the lower right and returns to the starting position; S8. Repeat steps S2 to S7 several times to make the yarns weave together and move in a plane. At the same time, the braided yarns are continuously pulled by the pulling mechanism along the Z axis perpendicular to the first plane and leave the braiding area, eventually forming a three-dimensional braid based on triaxial distribution.

2. The method for preparing a three-dimensional braided fabric based on triaxial distribution according to claim 1, characterized in that: In step S1, determining the type of the yarn carrier includes: The method uses two types of yarn carriers during the weaving process, namely a main yarn carrier and a diverter yarn carrier, each yarn carrier carrying a braiding yarn.

3. The method for preparing a three-dimensional braided fabric based on triaxial distribution according to claim 2, characterized in that: The method of determining the number of yarn carriers comprises: The number of the main yarn carriers is determined, and the number of the steering yarn carriers is determined.

4. The method for preparing a three-dimensional braided fabric based on triaxial distribution according to claim 3, characterized in that: The determining the number of the main yarn carriers comprises: The main yarn carriers are arranged into a hexagonal three-dimensional braid with a side length of m, with the direction perpendicular to the horizontal plane as the y-axis and the center point as point o. The main yarn carriers evenly arrange 2m-1 yarns on the y-axis to form the main arrangement axis on the y-axis. The adjacent columns are staggered in sequence, and the number of main yarn carriers on each column is reduced by 1, until the last column has m main yarn carriers, thereby forming a y-axis. 60 o 、y -60 o Two main arrangement shaft main body yarn carriers, the total number of the main body yarn carriers is 3m(m-1)+1.

5. The method for preparing a three-dimensional braided fabric based on triaxial distribution according to claim 4, characterized in that: The step of determining the number of the steering yarn carriers comprises: The first steering yarn carrier is arranged above the main yarn carrier along the y-axis, and then the next steering yarn carrier is arranged in sequence for every other main yarn carrier in the clockwise direction until 3m / 2 steering yarn carriers are arranged; in the counterclockwise direction of the first steering yarn carrier, the next steering yarn carrier is arranged in sequence for every other main yarn carrier until 3m / 2 steering yarn carriers are arranged; the total number of steering yarn carriers is 3m.

6. The method for preparing a three-dimensional braided fabric based on triaxial distribution according to claim 2, characterized in that: The turning yarn carrier is used to change the direction of the yarn during the weaving process.

7. A three-dimensional braided fabric based on triaxial distribution obtained by the method according to any one of claims 1 to 6, characterized in that: The cross section of the three-dimensional braided fabric is hexagonal, the braided yarns of the three-dimensional braided fabric are arranged in a regular hexagon, the side yarns are arranged at intervals along the outside of the regular hexagon, and the three-dimensional braided fabric is interwoven with braided yarns with a period of six times. The braided yarns are arranged along the y-axis and y-axis of the first plane. 60 o Axis, y -60 o The three-dimensional braided fabric is interwoven in three directions along the Z axis perpendicular to the first plane to form the overall structure of the three-dimensional braided fabric.

8. The three-dimensional braided fabric based on triaxial distribution according to claim 7, characterized in that: Inside the main braided yarns of the three-dimensional braided fabric, each yarn is in close contact with six surrounding yarns.

Images