A cam-type trajectory-assisted concentric yarn braiding machine

Abstract

This invention discloses a cam-type trajectory-assisted concentric yarn feeding braiding machine, including an internally hollow mounting platform. The top of the mounting platform has a left-handed sinusoidal trajectory and a right-handed sinusoidal trajectory, which intersect and are each composed of several cam-shaped trajectories connected end-to-end. Several spindle bases are slidably distributed along the left-handed and right-handed sinusoidal trajectories. A through hole is provided on the surface of the top of the mounting platform at the intersection of the left-handed and right-handed sinusoidal trajectories. The through hole is evenly distributed on a concentric circular trajectory, allowing the locking pins on the spindle bases to slide around the sinusoidal trajectory. The locking pins slide around the concentric circular trajectory formed by the auxiliary cam trajectory and the half-cam trajectory connected end-to-end on the cam trajectory assembly, achieving true concentric circular yarn feeding. This reduces the trajectory space between spindles, increases the spindle feeding speed, and improves the flexibility of braiding yarn feeding adjustment.

Description

Technical Field

[0001] This invention relates to the field of concentric yarn braiding machine technology, and specifically to a cam-type trajectory-assisted concentric yarn braiding machine. Background Technology

[0002] Traditional high-speed braiding machines are also known as five-column braiding machines. After the invention of the five-column braiding machine, the spindles in the braiding machine generally run in a cycle of left-handed and right-handed sinusoidal trajectories. The spindles move from the inner chord to the outer chord or from the outer chord to the inner chord, and the braiding thread changes from short to long or from long to short. The braiding thread is braided at an extremely high frequency.

[0003] After repeated experiments and structural verification, the main technical problems mentioned above are as follows:

[0004] 1. Although the traditional five-column braiding machine can also be called a concentric feeding type, the spindle and the drive adjustment plate rotate and move concentrically during the concentric conveying process. The trajectory space between the spindles is relatively large. The large running trajectory of the guide rail reduces the range of flexibility in adjusting the braiding yarn during the braiding conversion process, which can easily cause uneven tension and result in the phenomenon of splitting or backing of yarn.

[0005] 2. The spindle and spindle base cannot guarantee concentric rotation. The spindle is not stable when running along the track, the braiding thread fluctuates greatly, and the overall operation cannot guarantee flexible and reliable movement, resulting in a decrease in the speed of the braiding machine.

[0006] 3. When the spindle base is inside a left-handed or right-handed sinusoidal trajectory, the friction coefficient of the second locking pin on the spindle base is different due to the different trajectory paths and force directions. In order to achieve balanced force on the second locking pin in the sinusoidal trajectory, uniform sliding speed, and improved concentric wire feeding stability and reduced vibration, this invention innovatively introduces a cam trajectory component to balance the force on the second locking pin in the sinusoidal trajectory. Summary of the Invention

[0007] To address the problems existing in the prior art, this invention provides a cam-type structure trajectory-assisted concentric yarn feeding braiding machine. This machine achieves true concentric yarn feeding by sliding the second locking post on the spindle base around a sinusoidal trajectory, and the first locking post sliding around a concentric circle trajectory formed by the connection of the auxiliary cam trajectory and the half-cam trajectory on the cam trajectory assembly. This reduces the trajectory space between spindles, increases the spindle feeding speed, and improves the flexibility of yarn feeding adjustment. Simultaneously, the sliding of each spindle around the same concentric circle trajectory reduces frictional loss, lowers yarn feeding and feeding jitter, improves yarn feeding stability, achieves tension balance, and enhances braiding quality.

[0008] By setting the cam trajectory component, the second locking pin is made to be in force balance within the sinusoidal trajectory, and the sliding speed is uniform, which provides stable driving support for the concentric circle trajectory laying and tension balance.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a cam-type structure trajectory-assisted concentric yarn-leading braiding machine, comprising an installation platform with an internal hollow structure. The top of the installation platform is provided with a left-handed sinusoidal trajectory and a right-handed sinusoidal trajectory, which intersect and are each composed of several cam-shaped trajectories connected end-to-end. Several spindle bases are slidably distributed on the left-handed and right-handed sinusoidal trajectories. A through-hole is formed on the surface of the top of the installation platform at the intersection of the left-handed and right-handed sinusoidal trajectories. The through-holes are evenly distributed on a concentric circular trajectory. A drive shaft is installed inside the through-hole via a bearing, passing through the through-hole. A drive adjustment plate is mounted on the surface of the drive shaft above the through-hole. A drive shaft is positioned on the surface below the through hole, with drive gears meshing with each other. One of the drive gears is connected to a drive motor mounted on one side of the mounting platform, enabling the drive motor to drive the meshing rotation of the drive gears. The drive adjustment plate has at least four slots along its circumference, and a cam track assembly is provided on the top surface of the drive adjustment plate. The spindle base is slidably positioned within a left-handed or right-handed sinusoidal track, and its sliding is assisted by the cam track assembly, so that the spindle mounted on the upper part of the spindle base slides around a concentric circle track. This allows the spindle to release yarn around the concentric circle track, achieving balanced yarn tension, a small yarn release track space, and reduced yarn release vibration, thereby achieving fast yarn release speed and improved weaving quality.

[0010] Preferably, the cam trajectory assembly includes two auxiliary cam trajectories and two half-cam trajectories. The trajectory structure of the half-cam trajectory is approximately half of the trajectory structure of the auxiliary cam trajectory. The auxiliary cam trajectories and the half-cam trajectories are equidistantly distributed on the top surface of the drive adjustment plate, and the auxiliary cam trajectories and the half-cam trajectories are mirror images of each other.

[0011] Preferably, the spindle base includes a first fixed plate and a second fixed plate. The bottom of the first fixed plate is connected to the second fixed plate via a shaft. The first fixed plate, the second fixed plate, and the shaft are coaxial. The shaft is located inside the bayonet and is driven by the bayonet limit to enable the drive adjustment plate to drive the spindle base to slide. A tension compensator is provided on the upper part of the first fixed plate, and the spindle is installed on the upper part of the tension compensator. A stiffener is provided on one side of the first fixed plate. A locking post is provided at the bottom of the end of the stiffener away from the first fixed plate. A locking post is provided at the bottom of the second fixed plate on the side opposite to the extension of the stiffener. The locking post is slidably located in the auxiliary cam trajectory or in the half cam trajectory. The locking post is slidably located in the left-hand sinusoidal trajectory or the right-hand sinusoidal trajectory.

[0012] Preferably, a support block is provided at the concentric point of the left-hand sinusoidal trajectory and the right-hand sinusoidal trajectory. A trajectory baffle is provided on the top of the support block. The perimeter of the trajectory baffle is provided as an inwardly concave arc-shaped stop. The arc-shaped stop and the drive adjustment plate opposite to it are concentrically arranged. A trajectory channel is formed between the arc-shaped stop and the drive adjustment plate. During the process of the shaft sliding through the formed trajectory channel, the shaft is limited by the trajectory channel to achieve stable sliding of the locking post 2 within the left-hand sinusoidal trajectory or the right-hand sinusoidal trajectory.

[0013] Preferably, the installation platform is symmetrically provided with two baffle supports along its width direction. One side of the baffle support is opposite to the two drive adjustment plates, and the surface adjacent to the drive adjustment plates is provided with an inwardly concave arc-shaped baffle. The arc-shaped baffle is concentric with the drive adjustment plates and forms a trajectory channel two with the drive adjustment plates. When the shaft slides through the formed trajectory channel two, the trajectory channel two limits the sliding of the shaft, so as to realize the stable sliding of the locking column two within the left-hand sinusoidal trajectory or the right-hand sinusoidal trajectory.

[0014] In summary, this invention provides a cam-type trajectory-assisted concentric yarn-feeding braiding machine. By adjusting the force balance of the cam trajectory assembly, it achieves balanced force on the spindle base sliding within a left-handed or right-handed sinusoidal trajectory, ensuring uniform sliding speed of the spindle base, reducing frictional losses from sliding along the sinusoidal trajectory, and significantly reducing yarn feeding jitter, thus improving the braiding quality. Simultaneously, the concentric circular trajectory formed by the spindles mounted on the spindle base around the cam trajectory assembly achieves true concentric yarn feeding, reducing the space for spindle sliding and rotation, increasing the flexibility of yarn feeding adjustment, and achieving balanced tension at the spindle output. This avoids yarn twisting, splitting, and back-threading issues, providing a technological improvement for enhancing braiding quality.

[0015] Specifically, the drive motor drives the meshing gears to rotate. The drive adjustment plate has a slot along its circumference. Two spindle bases are distributed around the drive adjustment plate. The spindle bases slide by being limited by the slots. A cam track assembly is provided on the top surface of the drive adjustment plate. The spindle bases slide within a left-handed or right-handed sinusoidal track. The cam track assembly assists in their sliding, so that the spindles installed on the upper part of the spindle bases slide around a concentric circle track. This allows the spindles to be fed around a concentric circle track, achieving balanced tension during feeding, a small feeding track space, and reduced feeding vibration, thereby achieving fast feeding speed and improved weaving quality.

[0016] To achieve force balance for the second locking pin on the sinusoidal trajectory, the force on the first locking pin needs to be adjusted within the auxiliary cam trajectory or half-cam trajectory. This adjustment is necessary to adjust the force on the second locking pin. Specifically, when the second locking pin slides within the left-hand or right-hand sinusoidal trajectory, the force changes from small to large and then back to small. Correspondingly, the force on the first locking pin within the auxiliary cam trajectory or half-cam trajectory must also change from large to small and then back to large. Furthermore, the force changes of the first and second locking pins must be synchronous. By adjusting the force on the first locking pin within the auxiliary cam trajectory or half-cam trajectory, the force on the second locking pin can be adjusted within the left-hand or right-hand sinusoidal trajectory, thus achieving force balance and uniform sliding speed for the second locking pin.

[0017] Meanwhile, through the setting of the track baffle and the baffle support, a track channel one is formed between the track baffle and the drive adjustment plate, and a track channel two is formed between the baffle support and the drive adjustment plate. The sliding limit of the shaft one is achieved by the track channel one or the track channel two, so as to realize the stable sliding setting of the locking column two in the left-hand sinusoidal track or the right-hand sinusoidal track, thereby improving the stability of the spindle base sliding operation, and thus realizing the reduction of spindle wire feeding vibration and the wire feeding sliding around the concentric circle track. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the concentric yarn braiding machine structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the trajectory channel structure formed by the trajectory baffle and the drive adjustment plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the spindle base of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the spindle base, drive gear, and cam trajectory assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the auxiliary cam trajectory and half-cam trajectory structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the through hole, support block, and trajectory baffle structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the sliding point markings of the locking post on the left-handed sinusoidal trajectory of the present invention;

[0025] Figure 8 This is a schematic diagram of the trajectory of the snap-fit ​​pin of the present invention sliding from point B1 to point B3 within the auxiliary cam trajectory;

[0026] Figure 9This is a schematic diagram of the trajectory of the snap-fit ​​post of the present invention sliding from point C1 to point C3 within the half-cam trajectory;

[0027] In the diagram: 1. Mounting platform; 2. Left-hand sine trajectory; 3. Right-hand sine trajectory; 4. Spindle base; 5. Through hole one; 6. Drive shaft one; 7. Drive adjustment plate; 11. Drive gear; 12. Cam trajectory assembly; 13. Auxiliary cam trajectory; 14. Half-cam trajectory; 15. Fixing plate one; 16. Fixing plate two; 17. Bayonet; 21. Shaft one; 22. Tension compensator; 23. Rib plate one; 24. Snap-fit ​​post one; 25. Snap-fit ​​post two; 26. Support block; 27. Trajectory baffle; 31. Arc-shaped baffle one; 32. Baffle support one; 33. Arc-shaped baffle two. Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] like Figures 1 to 9 As shown:

[0030] like Figure 1 , 4As shown in Figure 6, this invention is a cam-type structure trajectory-assisted concentric yarn braiding machine, including an internally hollow mounting platform 1. A sinusoidal trajectory is formed on the top of the mounting platform 1, comprising a left-handed sinusoidal trajectory 2 and a right-handed sinusoidal trajectory 3. The left-handed and right-handed sinusoidal trajectories 2 and 3 intersect and are each composed of several cam-shaped trajectories connected end-to-end. In this embodiment, it is taken that both the left-handed and right-handed sinusoidal trajectories 2 and 3 are composed of two cam-shaped trajectories connected end-to-end as an example. Several spindle bases 4 are slidably distributed on the chord trajectory 2 and the right-hand sine trajectory 3. In this embodiment, eight spindle bases 4 are selected as an example. The number of spindle bases 4 must be a multiple of four and not less than eight. A through hole 5 is opened on the surface of the top of the mounting platform 1 at the intersection of the left-hand sine trajectory 2 and the right-hand sine trajectory 3. The through holes 5 are evenly distributed on a concentric circular trajectory. A drive shaft 6 is installed inside the through hole 5 through a bearing. The drive shaft 6 passes through the through hole 5. A drive adjustment plate 7 is installed on the surface above the through hole 5. A drive gear 11 is installed on the surface below the through hole 5. The drive gears 11 are meshed with each other, and one of the drive gears 11 is meshed with a drive motor installed on one side of the mounting platform 1, so that the drive motor drives the meshing rotation of the drive gears 11. The drive adjustment plate 7 has at least four slots 17 along its circumference. Two spindle bases 4 are distributed around the drive adjustment plate 7. The spindle bases 4 are limited to slide by the slots 17. A cam track assembly 12 is provided on the top surface of the drive adjustment plate 7. The spindle bases 4 are slidably set in the left-hand sine track 2 or the right-hand sine track 3, and the cam track assembly 12 assists in their sliding, so that the spindle installed on the upper part of the spindle base 4 slides around the concentric circle track, so that the spindle is fed around the concentric circle track, so as to achieve balanced tension of the fed yarn, small feeding track space, and reduced feeding jitter, so as to achieve fast feeding speed and improve weaving quality.

[0031] Specifically, the spindle base 4 slides on either the left-hand sinusoidal trajectory 2 or the right-hand sinusoidal trajectory 3. The cam trajectory assembly 12 assists in balancing the forces on the spindle base 4 during its sliding process, thereby achieving force balance in the sliding of the spindle base 4 within the two sinusoidal trajectories, reducing friction with the trajectory, and improving sliding efficiency.

[0032] Both the left-hand sinusoidal trajectory 2 and the right-hand sinusoidal trajectory 3 are composed of cam-shaped trajectories. When the force on the spindle base 4 during the push stroke within the left-hand sinusoidal trajectory 2 or the right-hand sinusoidal trajectory 3 changes from large to small, the force on the sliding push stroke of the spindle base 4 on the cam trajectory assembly 12 changes from small to large, thus achieving force balance at various positions of the sliding part of the spindle base 4 within the sinusoidal trajectory. When the spindle base 4 slides within the sinusoidal trajectory at the force inflection point, the force during the push stroke changes from small to large, and the corresponding force on the sliding push stroke of the cam trajectory assembly 12 changes from large to small, thus achieving the function of balancing the sliding force of the spindle base 4.

[0033] At the same time, the cam trajectory components 12 on the two adjacent drive adjustment plates 7 are connected end to end to form a concentric circle motion trajectory. As the spindle base 4 slides around the cam trajectory component 12, the spindle installed on the upper part of the spindle base 4 slides around each cam trajectory component 12, thus realizing the sliding of the spindle around the formed concentric circle trajectory and achieving the purpose of concentric wire laying of the spindle.

[0034] In at least one embodiment, such as Figure 4 , 5 As shown, the cam trajectory assembly 12 includes two auxiliary cam trajectories 13 and two half-cam trajectories 14. The trajectory structure of the half-cam trajectory 14 is approximately half of the trajectory structure of the auxiliary cam trajectory 13. The auxiliary cam trajectory 13 and the half-cam trajectory 14 are equidistantly distributed on the top surface of the drive adjustment plate 7, and the auxiliary cam trajectory 13 and the half-cam trajectory 14 are mirror images of each other.

[0035] In at least one embodiment, such as Figure 3 , 4 As shown, the spindle base 4 includes a first fixing plate 15 and a second fixing plate 16. The bottom of the first fixing plate 15 is connected to the second fixing plate 16 via a first shaft 21. The first fixing plate 15, the second fixing plate 16, and the first shaft 21 are coaxially arranged. The first shaft 21 is located inside the bayonet 17 and is limited and driven by the bayonet 17 to realize the driving adjustment plate 7 to drive the spindle base 4 to slide. A tension compensator 22 is provided on the upper part of the first fixing plate 15. The spindle is installed on the upper part of the tension compensator 22. A stiffener 23 is provided on one side of the first fixing plate 15. A locking post 24 is provided at the bottom of the end of the stiffener 23 away from the first fixing plate 15. A locking post 25 is provided at the bottom of the second fixing plate 16 on the side opposite to the direction of the extension section of the stiffener 23. The locking post 24 is slidably arranged in the auxiliary cam trajectory 13 or in the half cam trajectory 14. The locking post 25 is slidably arranged in the left-hand sinusoidal trajectory 2 or the right-hand sinusoidal trajectory 3.

[0036] During the sliding process, the spindle base 4 is balanced by the cam trajectory assembly 12. Specifically, the balancing method is as follows: taking the spindle base 4 sliding on a left-handed sinusoidal trajectory 2 as an example... Figure 7 As shown, assuming the S1 position drives the adjustment plate 7 to rotate clockwise, and the corresponding N1 position drives the adjustment plate 7 to rotate counterclockwise, the initial position of the locking post 25 is at point A1. The force on the locking post 25 during its push from point A1 to point A2 changes from large to small, as follows: Figure 8 As shown, the initial position of the corresponding locking post 24 is at point B1. The force on the locking post 24 changes from small to large as it pushes from point B1 to point B2. The force on the locking post 25 gradually decreases on the left-hand sinusoidal trajectory 2. The force on the corresponding locking post 24 gradually increases on the auxiliary cam trajectory 13. This achieves a balance of sliding force on the locking post 25 within the left-hand sinusoidal trajectory 2, thereby reducing the excessively fast sliding speed when the force is too small. This avoids the spindle sliding too fast, resulting in insufficient yarn tension, severe yarn tangling, and affecting the improvement of weaving quality.

[0037] like Figure 7 As shown, when the locking post 25 slides to the inflection point A2, the force on A2 as it slides to A3 changes from small to large, as follows: Figure 8 As shown, when the locking pin 24 slides to the inflection point B2, the force on B2 changes from large to small as it slides to B3. That is, the force on the locking pin 25 gradually increases as it slides within the left-hand sinusoidal trajectory 2, while the force on the locking pin 24 gradually decreases as it slides within the auxiliary cam trajectory 13. This achieves a balance of forces on the locking pin 25 within the left-hand sinusoidal trajectory 2, thus avoiding excessive friction and rapid wear on the left-hand sinusoidal trajectory 2 when the force on the locking pin 25 within the left-hand sinusoidal trajectory 2 is too large. At the same time, it also avoids excessive tension in the spindle unwinding, which can lead to excessive tension in the unwinding, making it easy for the unwinding thread to break and affecting the quality of weaving.

[0038] like Figure 7 As shown, the second locking pin 25 slides in the left-hand sinusoidal trajectory 2. When the spindle base 4 slides to point A3, the spindle base 4 switches to the next drive adjustment plate 7 for driving and sliding, that is, driven by the counterclockwise rotation of the drive adjustment plate 7 located at point N1. At this time, the first locking pin 24 slides out from the auxiliary cam trajectory 13 on the previous drive adjustment plate 7 and slides into the half cam trajectory 14 on the next drive adjustment plate 7.

[0039] like Figure 7 As shown, the force on snap-fit ​​post 25 changes from small to large during the sliding motion from point A3 to point A4. The force on snap-fit ​​post 24 is as follows: Figure 9As shown, the force on the push stroke from point C1 to point C2 changes from large to small. That is, the force on the second locking post 25 gradually increases as it slides in the left-hand sinusoidal trajectory 2, while the force on the first locking post 24 gradually decreases as it slides in the half-cam trajectory 14. This balances the force on the second locking post 25 in the left-hand sinusoidal trajectory 2 through the force change in the half-cam trajectory 14, thereby balancing the uniform sliding of the spindle base 4, reducing the sliding friction of the second locking post 25 on the left-hand sinusoidal trajectory 2, and simultaneously achieving balanced spindle tension and improving the quality of weaving.

[0040] like Figure 7 As shown, when the second locking post 25 slides from the inflection point A4 to point A5, the force during the push stroke gradually decreases, while the force during the push stroke of the first locking post 24 gradually increases within the half-cam trajectory 14. This achieves balanced force on the second locking post 25 as it slides within the left-hand sinusoidal trajectory 2 via the half-cam trajectory 14, reducing the sliding speed and achieving tension balance in the spindle unwinding. This prevents the unwinding tension from being too loose, which could affect the braiding quality, and also avoids problems such as yarn tangling and damage to the braided yarn.

[0041] At the same time, such as Figure 1 , 5 As shown in Figures 8 and 9, the concentric circle trajectory of the spindle feeding follows this pattern: the spindle base 4 slides between two adjacent drive adjustment plates 7. Initially, it slides from the previous auxiliary cam trajectory 13 to the half-cam trajectory 14 on the next drive adjustment plate 7. As the sliding continues, the spindle base 4 slides to the next drive adjustment plate 7, that is, the locking pin 24 changes from the half-cam trajectory 14 to the next auxiliary cam trajectory 13. This achieves a continuous sliding motion trajectory between the auxiliary cam trajectory 13 and the half-cam trajectory 14, forming a concentric circle motion trajectory for the spindle. While the spindle base 4 slides on the drive adjustment plate 7, the spindle feeds the yarn around the concentric circle trajectory. This reduces the weaving feeding space, increases the feeding speed, reduces feeding jitter and friction loss, and improves the weaving quality of the weaving machine while reducing maintenance frequency.

[0042] Similarly, when the second locking post 25 on the spindle base 4 slides on the right-hand sinusoidal trajectory 3, the first locking post 24 slides on the cam trajectory assembly 12. That is, the force on the second locking post 25 sliding on the right-hand sinusoidal trajectory 3 changes from large to small and then from small to large. Correspondingly, the force on the first locking post sliding on the cam trajectory assembly 12 changes from small to large and then from large to small. By having the first locking post slide on the cam trajectory assembly 12, the force on the second locking post 25 sliding on the right-hand sinusoidal trajectory 3 is balanced, thereby reducing the sliding speed or reducing friction with the right-hand sinusoidal trajectory 3, achieving spindle unwinding tension balance, and improving weaving quality.

[0043] In at least one embodiment, such as Figure 2 ,6 As shown, a support block 26 is provided at the concentric point of the left-hand sinusoidal trajectory 2 and the right-hand sinusoidal trajectory 3. A trajectory baffle 27 is provided on the top of the support block 26. The perimeter of the trajectory baffle 27 is provided with an inwardly concave arc-shaped baffle 31. The arc-shaped baffle 31 and the drive adjustment plate 7 opposite it are concentrically arranged. A trajectory channel is formed between the arc-shaped baffle 31 and the drive adjustment plate 7. During the process of the shaft 21 sliding through the trajectory channel, the shaft 21 is limited by the trajectory channel to achieve stable sliding of the locking post 25 within the left-hand sinusoidal trajectory 2 or the right-hand sinusoidal trajectory 3.

[0044] In at least one embodiment, such as Figure 1 As shown, the installation platform 1 is symmetrically provided with two baffle supports 32 along its width direction. One side of the baffle support 32 is opposite to the two drive adjustment plates 7, and the surface adjacent to the drive adjustment plate 7 is provided with an inwardly concave arc-shaped baffle 33. The arc-shaped baffle 33 is set with the drive adjustment plate 7 at the same center. The arc-shaped baffle 33 and the drive adjustment plate 7 form a trajectory channel 2. When the shaft 21 slides through the formed trajectory channel 2, the trajectory channel 2 limits the sliding of the shaft 21, so as to realize the stable sliding of the locking post 25 in the left-hand sinusoidal trajectory 2 or the right-hand sinusoidal trajectory 3.

[0045] The embodiments described in this invention are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the scope of protection of this invention.

Claims

1. A cam-type trajectory-assisted concentric yarn braiding machine, characterized in that, The installation platform (1) includes an internal hollow structure. The top of the installation platform (1) is provided with a left-handed sinusoidal trajectory (2) and a right-handed sinusoidal trajectory (3). The left-handed sinusoidal trajectory (2) and the right-handed sinusoidal trajectory (3) intersect and are each composed of several cam-shaped trajectories connected end-to-end. Several spindle bases (4) are slidably distributed on the left-handed sinusoidal trajectory (2) and the right-handed sinusoidal trajectory (3). A through hole (5) is opened on the surface of the top of the installation platform (1) at the intersection of the left-handed sinusoidal trajectory (2) and the right-handed sinusoidal trajectory (3). The through holes (5) are evenly distributed on a concentric circular trajectory. A drive shaft (1) is installed inside the through hole (5) via a bearing. 6) Drive shaft 1 (6) passes through through hole 1 (5). Drive adjustment plate (7) is installed on the surface of drive shaft 1 (6) above through hole 1 (5). Drive gear (11) is provided on the surface of drive shaft 1 (6) below through hole 1 (5). Drive adjustment plate (7) has at least four slots (17) along its circumference. Cam trajectory assembly (12) is provided on the top surface of drive adjustment plate (7). Spindle base (4) is slidably set in left-hand sinusoidal trajectory (2) or right-hand sinusoidal trajectory (3) and then assisted by cam trajectory assembly (12) to slide around the concentric circle trajectory of the spindle installed on the upper part of spindle base (4). The cam trajectory assembly (12) includes two auxiliary cam trajectories (13) and two half cam trajectories (14). The auxiliary cam trajectories (13) and the half cam trajectories (14) are equidistantly distributed on the top surface of the drive adjustment plate (7), and the auxiliary cam trajectories (13) and the half cam trajectories (14) are mirror-distributed. The spindle base (4) includes a first fixing plate (15) and a second fixing plate (16). The bottom of the first fixing plate (15) is connected to the second fixing plate (16) via a first shaft (21). The first fixing plate (15), the second fixing plate (16) and the first shaft (21) are coaxially arranged. The first shaft (21) is located inside the bayonet (17) and is limited and driven by the bayonet (17) to realize the sliding of the spindle base (4) by the drive adjustment plate (7). A tension compensator (22) is provided on the upper part of the first fixing plate (15). The upper part of the tension compensator (22) is... The spindle is installed in the part. A stiffener plate 1 (23) is provided on one side of the fixed plate 1 (15). A snap-fit ​​post 1 (24) is provided at the bottom of the end of the stiffener plate 1 (23) away from the fixed plate 1 (15). A snap-fit ​​post 2 (25) is provided at the bottom of the fixed plate 2 (16) on the side opposite to the direction of the extension section of the stiffener plate 1 (23). The snap-fit ​​post 1 (24) is slidably set in the auxiliary cam trajectory (13) or slidably set in the half cam trajectory (14). The snap-fit ​​post 2 (25) is slidably set in the left-hand sine trajectory (2) or the right-hand sine trajectory (3).

2. The cam-type trajectory-assisted concentric yarn braiding machine according to claim 1, characterized in that, A support block (26) is provided at the concentric point of the left-hand sine trajectory (2) and the right-hand sine trajectory (3). A trajectory baffle (27) is provided on the top of the support block (26). The four sides of the trajectory baffle (27) are set as an inwardly concave arc-shaped baffle (31). The arc-shaped baffle (31) is set at the same center as the drive adjustment plate (7) which is set opposite to it.

3. The cam-type trajectory-assisted concentric yarn braiding machine according to claim 1, characterized in that, The mounting platform (1) is symmetrically provided with two baffle supports (32) along its width direction. One side of the baffle support (32) is opposite to the two drive adjustment plates (7), and the surface adjacent to the drive adjustment plate (7) is provided with an arc-shaped baffle (33) that is concave inward. The arc-shaped baffle (33) is set with the drive adjustment plate (7) at the same center.

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