A three-dimensional intersecting helical braiding device and method of braiding

Abstract

The application discloses a three-dimensional intersecting spiral weaving device and a weaving method thereof, which comprises a first weaving unit and a second weaving unit, and the two weaving units are arranged in a staggered manner and form a square matrix combination, the first weaving unit comprises a supporting platform, a rotating disc and a yarn carrier, the rotating disc is rotationally connected with the supporting platform, the rotating disc and the supporting platform are uniformly distributed with four grooves along the circumference, the yarn carrier is arranged in each groove, and an outer tooth ring is arranged on the lower end surface of the rotating disc; a rotating shaft is arranged at the center of the rotating disc, rotating cams and a first driven gear are arranged at the upper and lower ends of the rotating shaft, a second driven gear is arranged at the lower end of the rotating shaft of the second weaving unit, the outer tooth ring, the first transmission gear and the second transmission gear are all connected with a driving motor, and the driving motor is used for rotating to weave the yarn. The application can improve the total bearing capacity of the woven yarn, and simultaneously enhance the bending resistance and the shearing resistance.

Description

Technical Field

[0001] This invention relates to a weaving technology for composite materials, and more particularly to a three-dimensional intersecting spiral weaving device and its weaving method. Background Technology

[0002] Currently, the equipment used in industrial development has increasingly higher requirements for material performance. Under the same volume, three-dimensional braided materials have a better stress structure, lighter weight and more stable shape than ordinary materials, which can greatly improve material performance and are widely used in modern industrial production.

[0003] The development of three-dimensional braided materials in China started relatively late. Although significant research results have been achieved in recent years, most of the current problems with three-dimensional braided materials in China are that the braided material has a single stress direction, the braiding process is complex, the braiding is difficult, and the cost is high. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a three-dimensional intersecting spiral braiding device and its braiding method that are reasonably designed, have good braiding effect and high production efficiency.

[0005] The technical solution of this invention is: A three-dimensional intersecting spiral weaving device includes a first weaving unit and a second weaving unit, which are arranged alternately to form a square array. The first weaving unit includes a support platform, a rotating disk, and a yarn carrier. The rotating disk is disposed on the support platform and the two are rotatably coupled. The rotating disk and the support platform are evenly distributed with four grooves along the circumference. Each groove is provided with the yarn carrier. An external toothed ring is provided on the lower end surface of the rotating disk. A rotating shaft is provided at the center of the rotating disk, and a rotating cam is provided at the upper end of the rotating shaft. The rotating cam pushes the yarn carrier to move back and forth in the groove between adjacent knitting units through a push rod. A first driven gear is provided at the lower end of the rotating shaft. The difference between the structure of the second braiding unit and the first braiding unit is that a second driven gear is provided at the lower end of the rotating shaft, and the installation height of the second driven gear is lower than that of the first driven gear. The external gear ring, the first transmission gear, and the second transmission gear are all connected to the drive motor to rotate separately and perform the weaving of the threads.

[0006] Furthermore: the external gear rings of the first braiding unit and the second braiding unit are connected together by a set of intermediate transition gears and are ultimately connected to the external gear ring drive motor; the first driven gear of the first braiding unit is connected together by another set of intermediate transition gears and is ultimately connected to the first driven gear drive motor; the second driven gear of the second braiding unit is connected together by yet another set of intermediate transition gears and is ultimately connected to the second driven gear drive motor.

[0007] Furthermore: the support platform is square, with a central stepped shaft hole on its upper end face, the rotating disk is located above the central stepped shaft hole, and the external toothed ring extends from the lower part of the central stepped shaft hole.

[0008] Furthermore: the center of the rotating disk is provided with a stepped through hole, wherein the small-diameter through hole is rotatably connected to the drive shaft, the upper end of the rotating shaft is provided with the rotating cam, the rotating cam is located in the large-diameter through hole, a radial through hole is provided between the large-diameter through hole and the groove, a push rod is provided in the radial through hole, the two are slidably engaged, a return spring is provided between the push rod and the hole wall of the large-diameter through hole, the elasticity of the return spring makes the inner end of the push rod in close contact with the outer ring surface of the rotating cam.

[0009] Furthermore, the push rod is a stepped rod structure, with the inner end segment having a larger diameter than the outer end segment, and the large-diameter segment and the small-diameter segment are connected by a movable connection, which includes a threaded connection or a snap-fit ​​connection.

[0010] Furthermore: each of the grooves is provided with a guide rail groove and an electromagnet, the guide rail at the lower end of each yarn carrier matches the guide rail groove, the two are slidably engaged, each yarn carrier is provided with a ferromagnetic metal material, and the upper end of the yarn carrier is provided with a thread post.

[0011] Furthermore: the support platform, rotating disk, and yarn carrier are all made of aluminum alloy or ABS engineering plastic to reduce the friction of the slide rail during exchange; the ferromagnetic metal material is iron, cobalt, or nickel.

[0012] Furthermore: there is no contact between adjacent support platforms or between the support platform and the rotating disk, and there is a gap between them, the gap being no greater than the width of the yarn carrier, to prevent the yarn carrier from falling off.

[0013] A three-dimensional intersecting spiral weaving method utilizing the aforementioned three-dimensional intersecting spiral weaving device includes the following steps: a. Assemble a suitable square array as needed, and in its original state, do not place a yarn carrier in the outermost groove of the square array; b. When the electromagnet is de-energized, the second transmission gear of the second weaving unit rotates 45 degrees, which in turn drives the rotating cam to rotate. The rotating cam pushes the corresponding push rod forward, so that the two yarn carriers on the left and right sides of the second weaving unit enter the groove of the first weaving unit. When the electromagnet is energized, it attracts the ferromagnetic material on the yarn carrier, thus fixing the yarn carrier. All gears rotate 180 degrees. c. When the electromagnet is de-energized, the second transmission gear of the second weaving unit rotates 90 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, causing the upper and lower yarn carriers of the second weaving unit to enter the groove of the first weaving unit. When the electromagnet is energized, the yarn carriers are fixed, and all gears rotate 180 degrees. d. When the electromagnet is de-energized, the second transmission gear of the second braiding unit rotates 45 degrees, and the first transmission gear of the first braiding unit rotates 45 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, so that the two yarn carriers on the left and right of the first braiding unit enter the groove of the second braiding unit. When the electromagnet is energized, the yarn carrier 3 is fixed, and all gears rotate 180 degrees. e. When the electromagnet is de-energized, the first transmission gear of the first weaving unit rotates 90 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, causing the upper and lower yarn carriers of the first weaving unit to enter the groove of the second weaving unit. When the electromagnet is energized, the yarn carriers are fixed, all gears rotate 180 degrees, and the first transmission gear of the first weaving unit rotates 45 degrees. f. At this point, the yarn carrier and the rotating cam return to their original positions. The above operations can be repeated repeatedly to eventually form a fabric.

[0014] Furthermore: This structural unit consists of four secondary lines around the axis. The four secondary lines are located at the four vertices of the circle, with an angle of 90 degrees between each vertex. They move in a circle with the center of the disk as the center, and move in uniform linear motion on the axis. They spiral forward 360 degrees around the direction guided by the main line, intertwining with each other to form a structural unit. The structural units are connected to each other in an alternating manner, forming both the four lines of a structural unit and one of the four lines of four adjacent structural units.

[0015] The beneficial effects of this invention are: 1. This invention consists of four secondary axes that move in a circular motion around the center of a disk, moving at a constant speed in a straight line on the axis, spiraling forward 360 degrees around the direction guided by the main axis, intertwining with each other to form a structural unit. The structural units are interwoven to form a three-dimensional braided structure, which can improve the total load-bearing capacity of the braided lines, while enhancing the bending resistance and shear resistance.

[0016] 2. By setting guide rails, this invention can ensure the regularity and consistency of the yarn carrier's movement, prevent deviation, and improve the weaving effect.

[0017] 3. The present invention uses the cooperation of cam and push rod to periodically drive the yarn carrier to move back and forth, and can participate in the weaving of adjacent rotating discs, with good consistency.

[0018] 4. In this invention, the external gear ring, the first driven gear, and the second driven gear are connected in three layers. Each layer is connected by an intermediate transition gear, and each layer is driven by a drive motor to achieve uniform rotation.

[0019] 5. This invention is reasonably designed, has good compilation effect and high production efficiency, and is especially suitable for large-scale production. After its promotion, it will have good economic benefits. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of a three-dimensional intersecting spiral weaving device; Figure 2 for Figure 1 The image shows a side view of a three-dimensional intersecting spiral weaving device; Figure 3 for Figure 1 The image shows a top view of a three-dimensional intersecting spiral weaving device; Figure 4 for Figure 1 3D structural diagram of the yarn carrier; Figure 5 for Figure 1 A top-down enlarged view of one of the knitting units; Figure 6 for Figure 5 One of the side views of the woven unit shown; Figure 7 for Figure 5 The second side view of the woven unit shown; Figure 8 for Figure 5 Structural diagram of the center push rod; Figure 9 for Figure 1 A schematic diagram showing the interconnection of the internal and external gear rings. Detailed Implementation

[0021] Example 1: See Figure 1 — Figure 9 In the diagram, 1-first weaving unit, 2-second weaving unit, 3-yarn carrier, 11-support platform, 12-groove, 13-guide rail groove, 14-rotating cam, 15-push rod, 16-reset spring, 17-electromagnet, 18-external gear ring, 19-first driven gear, 20-rotating shaft, 21-second driven gear, 22-rotating disc, 31-thread post, 32-base, 33-guide rail.

[0022] A three-dimensional intersecting spiral weaving device includes a first weaving unit 1 and a second weaving unit 2. The first weaving unit 1 and the second weaving unit 2 are arranged alternately to form a square array combination (the figure shows a 4*4 square array, but it can also form a 7*7 square array, or an 11*12 square array, or a 50*60 square array, depending on the actual needs, and not listed one by one). The first weaving unit 1 includes a support platform 11, a rotating disk 22 and a yarn carrier 3. The rotating disk 22 is set on the support platform 11 and the two are rotated together. The rotating disk 22 and the support platform 11 are evenly distributed with four grooves 12 along the circumference. Each groove 12 is provided with a yarn carrier 3. An external toothed ring 18 is provided on the lower end surface of the rotating disk 22. A rotating shaft 20 is provided at the center of the rotating disc 22. A rotating cam 14 is provided at the upper end of the rotating shaft 20. The rotating cam 14 pushes the yarn carrier 3 to move back and forth in the groove 12 between adjacent knitting units through the push rod 15. A first driven gear 19 is provided at the lower end of the rotating shaft 20. The structure of the second braiding unit 2 is basically the same as that of the first braiding unit 1. The difference is that the lower end of the rotating shaft 20 is provided with a second driven gear 21, and the installation height of the second driven gear 21 is lower than that of the first driven gear 19. The external gear ring 18, the first transmission gear 19, and the second transmission gear 21 are all connected to the drive motor to rotate separately and perform the weaving of the threads.

[0023] Preferred embodiment: The external gear rings 18 of the first braiding unit 1 and the second braiding unit 2 are connected together by a set of intermediate transition gears. Figure 9 As shown), and is ultimately connected to the external gear ring drive motor; the first driven gear 19 of the first braiding unit 1 is connected together through another set of intermediate transition gears, and is ultimately connected to the first driven gear drive motor; the second driven gear 21 of the second braiding unit 2 is connected together through yet another set of intermediate transition gears, and is ultimately connected to the second driven gear drive motor. This reduces the number of drive motors.

[0024] Preferred solution: The support platform 11 is square, with a central stepped shaft hole on its upper end face. The rotating disk 22 is located above the central stepped shaft hole, and the external toothed ring 18 extends from the lower part of the central stepped shaft hole to facilitate mutual meshing and connection.

[0025] Preferred solution: A stepped through hole is provided at the center of the rotating disk 22, wherein the small diameter through hole is rotatably connected to the drive shaft 20, and a rotating cam 14 is provided at the upper end of the rotating shaft 20. The rotating cam 14 is located in the large diameter through hole, and a radial through hole is provided between the large diameter through hole and the groove 12. A push rod 15 is provided in the radial through hole, and the two are slidably engaged. A return spring 16 is provided between the push rod 15 and the hole wall of the large diameter through hole. The elastic force of the return spring 16 makes the inner end of the push rod 15 in close contact with the outer ring surface of the rotating cam 14.

[0026] Preferred solution: The push rod 15 is a stepped rod structure, with the inner end rod segment having a larger diameter than the outer end rod segment, and the large-diameter rod segment and the small-diameter rod segment are connected by a movable connection, including threaded connection or snap-fit ​​connection, which facilitates disassembly and assembly.

[0027] Preferred solution: Each groove 12 is provided with a guide rail groove 13 and an electromagnet 17. The guide rail 33 at the lower end of each yarn carrier 3 matches the guide rail groove 13, and the two slide together. Each yarn carrier 3 is provided with a ferromagnetic metal material (not shown in the figure). The upper end of the yarn carrier 3 is provided with a thread post 31, and the middle is a base 32. Yarn can be put on the thread post 31.

[0028] Preferred solution: The support platform 11, rotating disk 22 and yarn carrier 3 are all made of aluminum alloy or ABS engineering plastic to reduce the friction of the slide rail during exchange; the ferromagnetic metal material is iron, cobalt or nickel.

[0029] Preferred solution: There is no contact between adjacent support platforms 11 or between support platform 11 and rotating disk 22, and there is a gap between them, which is no greater than the width of yarn carrier 3, to prevent yarn carrier 3 from falling.

[0030] Weaving method: 1. Assemble a suitable square array as needed, and in its original state, do not place the yarn carrier 3 in the outermost groove 12 of the square array.

[0031] 2. When the electromagnet 17 is de-energized, the second transmission gear 21 of the second weaving unit 2 rotates 45 degrees, which in turn drives the rotating cam 14 to rotate. The rotating cam 14 is similar to a shuttle, with two long sides and two short sides. The rotating cam 14 pushes the corresponding push rod 15 forward, so that the two yarn carriers 3 on the left and right sides of the second weaving unit 2 enter the grooves 12 of the first weaving unit 1. When the electromagnet 17 is energized, it attracts the ferromagnetic material on the yarn carrier 3, so that the yarn carrier 3 is fixed. All gears rotate 180 degrees.

[0032] 3. When the electromagnet 17 is de-energized, the second transmission gear 21 of the second weaving unit 2 rotates 90 degrees, driving the rotating cam 14 to rotate. The rotating cam 14 pushes the push rod 15 forward, so that the upper and lower yarn carriers 3 of the second weaving unit 2 enter the groove 12 of the first weaving unit 1. The electromagnet 17 is energized, fixing the yarn carriers 3, and all gears rotate 180 degrees.

[0033] 4. When the electromagnet 17 is de-energized, the second transmission gear 21 of the second braiding unit 2 rotates 45 degrees, and the first transmission gear 19 of the first braiding unit 1 rotates 45 degrees, driving the rotating cam 19 to rotate. The rotating cam 14 pushes the push rod 15 forward, so that the two yarn carriers 3 of the first braiding unit 1 enter the groove 12 of the second braiding unit 2. When the electromagnet 17 is energized, the yarn carriers 3 are fixed, and all gears rotate 180 degrees.

[0034] 5. When the electromagnet 17 is de-energized, the first transmission gear 19 of the first weaving unit 1 rotates 90 degrees, driving the rotating cam 14 to rotate. The rotating cam 14 pushes the push rod 15 forward, causing the upper and lower yarn carriers of the first weaving unit 1 to enter the groove 12 of the second weaving unit 2. When the electromagnet 17 is energized, the yarn carrier 3 is fixed. All gears rotate 180 degrees, and the first transmission gear 19 of the first weaving unit 1 rotates 45 degrees.

[0035] At this point, the yarn carrier 3 and the rotating cam 14 return to their original positions, and the above operation can be repeated.

[0036] This structural unit consists of four secondary lines (hereinafter referred to as winding lines) that revolve around the axis. The four secondary lines are located at the four vertices of the circle, with an angle of 90 degrees between the vertices. They move in a circle with the center of the disk as the center, and move in a uniform linear motion on the axis. They spiral forward 360 degrees around the direction guided by the main line, and intertwine with each other to form a structural unit. The structural units are connected to each other in an interlaced manner. The four lines that constitute a structural unit are also one of the four lines of the four adjacent structural units.

[0037] When the structure experiences large changes in the direction of force, it should use windings with high toughness and strength, such as glass fiber or carbon fiber. Depending on the environment in which the material is used, the yarn can be flexibly changed. For example, aramid silver-plated fiber or polyimide silver fiber can be used for high temperatures, while ceramic fiber can be used for heat insulation.

[0038] 1. Excellent mechanical properties: When subjected to tension in one direction, because the structural unit consists of four interwoven threads, the tension from different directions will be distributed across the four threads from the intersection point, preventing the force from acting on a single point and increasing the overall load-bearing capacity of the woven structure.

[0039] 2. High shear resistance: When the braided body is subjected to shear force, because the braided yarn is spiral in shape, when subjected to shear force in one direction, it is difficult for the direction of the shear force to be perpendicular to the point of force on the braided yarn. In this way, the force will be decomposed, and the shear force on the braided body will be reduced.

[0040] 3. High bending strength: When an object bends, the greatest stress is concentrated at the bending point. When the maximum yield strength of the object is exceeded, the object will break. However, the structure of the braided body is spiral, which can distribute the stress at the bending point to the unbent part, reduce the stress, increase the overall yield strength of the bent part, and extend the service life of the braided body.

[0041] The main form of this woven structure is a three-dimensional interwoven spiral shape. It can be used as the main body of composite or tough material structures. However, in order to ensure that there is sufficient contact force between the threads, a brittle material should be cast to wrap the woven body.

[0042] Example 2: This example is basically the same as Example 1, and the similarities will not be repeated. The difference is that the external gear ring, the first transmission gear 19 and the second transmission gear 21 are not connected together through an intermediate transition gear, but are connected to the drive motor respectively. This scheme is suitable for small arrays.

[0043] 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 made based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A three-dimensional intersecting spiral weaving device, comprising a first weaving unit and a second weaving unit, wherein the first weaving unit and the second weaving unit are arranged alternately to form a square array, characterized in that: The first weaving unit includes a support platform, a rotating disk, and a yarn carrier. The rotating disk is disposed on the support platform and the two are rotatably coupled. The rotating disk and the support platform are evenly distributed with four grooves along the circumference. Each groove is provided with the yarn carrier. An external toothed ring is provided on the lower end surface of the rotating disk. A rotating shaft is provided at the center of the rotating disk, and a rotating cam is provided at the upper end of the rotating shaft. The rotating cam pushes the yarn carrier to move back and forth in the groove between adjacent knitting units through a push rod. A first driven gear is provided at the lower end of the rotating shaft. The difference between the structure of the second braiding unit and the first braiding unit is that a second driven gear is provided at the lower end of the rotating shaft, and the installation height of the second driven gear is lower than that of the first driven gear. The external gear ring, the first driven gear, and the second driven gear are all connected to the drive motor to rotate separately and perform the weaving of the yarn. The rotating disk has a stepped through hole at its center, with the small-diameter through hole rotatably connected to the drive shaft. The upper end of the rotating shaft is provided with the rotating cam, which is located in the large-diameter through hole. A radial through hole is provided between the large-diameter through hole and the groove, and a push rod is provided in the radial through hole. The two are slidably engaged. A return spring is provided between the push rod and the hole wall of the large-diameter through hole. The elastic force of the return spring makes the inner end of the push rod in close contact with the outer ring surface of the rotating cam.

2. The three-dimensional intersecting spiral weaving device according to claim 1, characterized in that: The external gear rings of the first and second braiding units are connected together by a set of intermediate transition gears and are ultimately connected to the external gear ring drive motor; the first driven gear of the first braiding unit is connected together by another set of intermediate transition gears and is ultimately connected to the first driven gear drive motor; the second driven gear of the second braiding unit is connected together by yet another set of intermediate transition gears and is ultimately connected to the second driven gear drive motor.

3. The three-dimensional intersecting spiral weaving device according to claim 1, characterized in that: The support platform is square, with a central stepped shaft hole on its upper surface. The rotating disk is located above the central stepped shaft hole, and the external toothed ring extends from the lower part of the central stepped shaft hole.

4. The three-dimensional intersecting spiral weaving device according to claim 1, characterized in that: The push rod is a stepped rod structure, with the inner end segment having a larger diameter than the outer end segment, and the large-diameter segment and the small-diameter segment are connected by a movable connection, which includes a threaded connection or a snap-fit ​​connection.

5. A three-dimensional intersecting spiral weaving device according to claim 1, characterized in that: Each groove is provided with a guide rail groove and an electromagnet. The guide rail at the lower end of each yarn carrier matches the guide rail groove, and the two slide together. Each yarn carrier is provided with ferromagnetic metal material, and the upper end of the yarn carrier is provided with a thread post.

6. A three-dimensional intersecting spiral weaving device according to claim 5, characterized in that: The support platform, rotating disk, and yarn carrier are all made of aluminum alloy or ABS engineering plastic to reduce the friction of the slide rail during exchange; the ferromagnetic metal material is iron, cobalt, or nickel.

7. A three-dimensional intersecting spiral weaving device according to claim 1, characterized in that: The adjacent support platforms do not contact each other or the support platform and the rotating disk, but there is a gap between them. The gap is no greater than the width of the yarn carrier to prevent the yarn carrier from falling.

8. A three-dimensional intersecting spiral weaving method using a three-dimensional intersecting spiral weaving device according to any one of claims 1-7, comprising the following steps: a. Assemble a suitable square array as needed, and in its original state, do not place a yarn carrier in the outermost groove of the square array; b. When the electromagnet is de-energized, the second driven gear of the second weaving unit rotates 45 degrees, which in turn drives the rotating cam to rotate. The rotating cam pushes the corresponding push rod forward, so that the two yarn carriers on the left and right sides of the second weaving unit enter the groove of the first weaving unit. When the electromagnet is energized, it attracts the ferromagnetic material on the yarn carrier, thus fixing the yarn carrier. All gears rotate 180 degrees. c. When the electromagnet is de-energized, the second driven gear of the second weaving unit rotates 90 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, causing the upper and lower yarn carriers of the second weaving unit to enter the grooves of the first weaving unit. When the electromagnet is energized, the yarn carriers are fixed, and all gears rotate 180 degrees. d. When the electromagnet is de-energized, the second driven gear of the second weaving unit rotates 45 degrees, and the first driven gear of the first weaving unit rotates 45 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, so that the two yarn carriers on the left and right of the first weaving unit enter the groove of the second weaving unit. When the electromagnet is energized, the yarn carriers are fixed, and all gears rotate 180 degrees. e. When the electromagnet is de-energized, the first driven gear of the first weaving unit rotates 90 degrees, driving the rotating cam to rotate. The rotating cam pushes the push rod forward, causing the upper and lower yarn carriers of the first weaving unit to enter the groove of the second weaving unit. When the electromagnet is energized, the yarn carriers are fixed, all gears rotate 180 degrees, and the first driven gear of the first weaving unit rotates 45 degrees. f. At this point, the yarn carrier and the rotating cam return to their original positions. The above operations can be repeated repeatedly to eventually form a fabric.

9. A three-dimensional intersecting spiral weaving method according to claim 8, characterized in that: This structural unit consists of four secondary lines around an axis, located at the four vertices of a circle with a 90-degree angle between them. These lines move in a circle with the center of the disk as the center, and then move in uniform linear motion on the axial plane. They spiral forward 360 degrees around the direction guided by the main line, intertwining with each other to form a structural unit. The structural units are connected to each other in an alternating manner, forming both the four lines of a structural unit and one of the four lines of four adjacent structural units.

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