Synchronous traction device and method for multiple continuous carbon fiber prepregs

Abstract

The invention belongs to the technical field of mechanical equipment, relates to a synchronous traction device and method for a plurality of continuous carbon fiber prepregs, and solves the problems of uneven tension and low traction efficiency easily generated in the synchronous traction process of a plurality of prepreg belts. The synchronous traction device mainly comprises a traction clamping jaw and a traction executing mechanism. The traction clamping jaw is used for completing traction clamping of a plurality of prepregs and self-adaptive adjustment of tension of a clamped material belt, and the traction executing mechanism is used for driving the traction clamping jaw to complete a set track. Synchronous traction of the multiple material belts can be achieved, the problem that the tension of the material belts is too large or too small in the conveying process is solved, and the traction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical equipment, and relates to a synchronous traction device and method for several continuous carbon fiber prepregs. Background Art

[0002] Carbon fiber reinforced resin matrix composites have the advantages of light weight, high specific strength, high specific modulus, corrosion resistance, etc., and their formed components have been widely used in aerospace and other fields. The chopped carbon fiber prepreg combined with the compression molding technology can realize the preparation of components with more complex structures, and has the advantages of short processing cycle and easy realization of structural integration. To meet the demand for raw materials of short chopped sheet for compression molding, one processing method of chopped carbon fiber sheet is to longitudinally cut the continuous carbon fiber thermosetting prepreg along the fiber direction and then cut it into prepreg narrow bands with a width of 7-20 mm, and then form chopped prepreg sheets with a length of 5-30 mm through a chopping device. In this process, since the longitudinal cutting is completed on a fiber slitter and the chopping is completed on a cross cutter, two different devices, the process of loading and unloading the material roll is time-consuming and laborious, which greatly affects the processing efficiency of the chopped carbon fiber prepreg tape. At the current stage, the loading and unloading process of material roll processing equipment such as slitters is usually completed manually, and problems such as deviation, wrinkle, and poor tension consistency are likely to occur during the traction process. The degree of automation is low, and it is difficult to face the actual processing situation where multiple material tapes need to follow complex or long path trajectories, which affects the processing efficiency of products. Therefore, there is currently a lack of an automated traction device to replace manual traction of multiple material tapes and solve the problems of low efficiency, material deviation, deformation, etc. existing in manual traction during the material tape chopping process.

[0003] The patent publication number of Yuan Zhongchun is CN217675891U, and the invention name is "Carbon Fiber Tape Traction Device". The rotating shaft is rotatably connected by bearings, and an adjustment mechanism and an anti-wrinkle mechanism are provided, which can adjust the tension when the device traction the carbon fiber tape, so that the traction effect of the device during traction is better. The patent publication number of Wu Jinzai et al. is CN205312795U, and the invention name is "A Material Tape Traction Device". By using a driving shaft, a driven shaft rotating in the opposite direction to the driving shaft, a reverse rotation mechanism for driving the driven shaft to reverse, and a power mechanism for driving the driving shaft to rotate in the same direction as the reverse rotation mechanism, the problems of low positioning accuracy of the current peeling equipment and the bounce and jitter of the protective film caused by the non-synchronization of the driving shaft and the driven shaft are solved. The above-mentioned material change and unwinding methods are suitable for single-roll wide-width material rolls. Since the prepreg tape chopping equipment needs to cut multiple narrow material rolls simultaneously, single-roll unwinding cannot meet the processing efficiency requirements. And the above methods require manual loading and unloading of the material tape, and there are problems such as low efficiency, material deviation, deformation, etc., and the degree of automation is low. Therefore, to meet the high-efficiency chopping processing requirements of carbon fiber prepregs, this paper designs a device that can realize synchronous automated traction of multiple prepregs, which can effectively reduce the loading, unloading and roll changing time of the material roll, realize the efficient and stable traction and conveying of multiple prepreg tapes, and lay a key foundation for the improvement of the subsequent chopping processing efficiency. Summary of the Invention

[0004] To solve the above problems, the present invention proposes a synchronous traction device and method for several continuous carbon fiber prepregs. Through the traction shaft, synchronous traction of multiple prepreg tapes is achieved, and the automatic tension adjustment of the tape traction process is realized for each tape through the traction rings on the traction shaft, ensuring stable traction during the conveying process.

[0005] The technical solution of the present invention is as follows:

[0006] A synchronous traction device for several continuous carbon fiber prepregs includes a traction jaw 1 and a traction execution mechanism 2. The traction jaw 1 is used to achieve automatic clamping of multiple prepreg tapes and adaptive adjustment of the prepreg tape tension, and includes a driving shaft component 3, a driven shaft component 4, a clamping component 5, and a driving component 6 for clamping the prepreg tape. The driving shaft component 3 and the driven shaft component 4 cooperate with each other to clamp the prepreg tape. The clamping component 5 is connected to the driven shaft component 4 and can drive the driven shaft component 4 to approach or leave the driving shaft component 3. The driving component 6 drives the driving shaft component 3 to rotate, applying a certain tension to each prepreg tape located on the driving shaft component 3 to adjust each prepreg tape; the traction execution mechanism 2 is used to drive the traction jaw 1 to move in the horizontal and vertical directions.

[0007] The driving shaft component 3 includes a driving core shaft 301 and a plurality of driving shaft units arranged on the driving core shaft 301. Each driving shaft unit includes a housing 302, a connecting piece A 304, a connecting piece B 306, a disc damping rotating shaft 305, and a rotating bearing 303. The two side ends of the disc damping rotating shaft 305 are respectively connected to the connecting piece A 304 and the connecting piece B 306 through fixing screws, used to provide a certain damping for the rotation of the housing 302. The connecting piece B 306 is fixed on the driving core shaft 301 through a set screw. The housing 302 is fixedly connected to the connecting piece A 304. The inside of the housing 302 is fixedly connected to the outer ring of the rotating bearing 303, and the inner ring of the rotating bearing 303 is fixedly connected to the driving core shaft 301. The rotating bearing 303 is used to maintain the stable rotation of the housing 302. By adjusting the damping of the disc damping rotating shaft 305, the damping of the housing 302 rotation is adjusted.

[0008] The driven shaft component 4 includes a driven mandrel 401 and a plurality of driven shaft units arranged on the driven mandrel 401. Each driven shaft unit includes a driven housing 402 and two bearings 403. The driven housing 402 is fixed on the outer rings of the two bearings 403 by set screws. The inner rings of the two bearings 403 are fixed on the driven mandrel 401. There is a certain space between the two bearings 403, and the positions of the bearings 403 are arranged on the driven mandrel 401 by snap rings. The driven mandrel 401 is a hollow shaft with an air flow passage arranged inside. Air flow holes 404 are arranged along the axial direction. The positions of the air flow holes 404 are arranged at the middle positions of each driven housing 402. An exhaust hole 405 is arranged in the middle of each driven housing 402. The exhaust holes 405 correspond to the air flow holes 404 one by one. Cold air is introduced into the inner end of the driven mandrel 401. The cold air enters the inside of the driven housing 402 through the air flow holes 404 and then blows out from the exhaust holes 405 on the driven housing 402.

[0009] The clamping component 5 includes a clamping cylinder 501, a ball eye joint 502, a connecting shaft 503, a fixed shaft 505 and a rotating plate 504. Two rotating plates 504 are arranged in parallel to ensure stable and firm clamping. The ball eye joint 502 on the clamping cylinder 501 is fixedly connected to the connecting shaft 503. The two ends of the connecting shaft 503 respectively pass through the long circular limit holes in the middle sections of the two rotating plates 504 and can move in the long circular limit holes to ensure the driving effect of the clamping cylinder 501 on the driven mandrel 401. The lower sections of the two rotating plates 504 are rotatably connected to the fixed shaft 505 through bearings. The fixed shaft 505 is also rotatably connected to the connecting part 507 through a bearing. The connecting part 507 and the clamping cylinder 501 are both fixed on the jaw bottom plate 506. The driven mandrel 401 is fixedly connected to the rotating plate 504 through the holes in the upper sections of the two rotating plates 504. When clamping the strip, the clamping cylinder 501 quickly retracts. The ball eye joint 502 drives the connecting shaft 503 to rotate the rotating plate 504, so that the driven mandrel 401 and the driving mandrel 301 are closed to clamp the strip.

[0010] The driving component 6 includes a torque motor 601, a synchronous pulley A602, a synchronous pulley B603 and a synchronous belt 604. The synchronous pulley A602 and the synchronous pulley B603 are connected by the synchronous belt 604. The synchronous pulley A602 is fixed to the output shaft of the torque motor 601. The torque motor 601 is fixed on the jaw bottom plate 506. The synchronous pulley B603 is fixed to the driving mandrel 301. The driving mandrel 301 is driven to rotate by the torque motor 601;

[0011] The traction actuator 2 includes an X displacement shaft 701 and a Y displacement shaft 702. The traction actuator 2 is connected to the traction jaw 1 through a connecting plate 703.

[0012] Further, the outer shell 302 of each driving shaft unit in the driving shaft component 3 corresponds to the driven outer shell 402 of each driven shaft unit in the driven shaft component 4 one by one. Multiple pairs of the outer shell 302 and the driven outer shell 402 are used to simultaneously traction multiple material tapes.

[0013] Further, the disc damping rotating shaft 305 in each outer shell 302 of the driving mandrel 301 stops rotating when the pulling force of the material tape on the outer shell 302 reaches the critical value of the disc damping rotating shaft 305 during the rotation of the driving mandrel 301, ensuring that each prepreg tape is tightened separately and avoiding the offset and wrinkling of the prepreg tape.

[0014] Further, the traction jaw 1 is arranged in a cantilever style;

[0015] Further, when the tension torque of the prepreg tape on the outer shell 302 of the driving shaft unit in the driving shaft component 3 is less than the critical resistance of the disc damping rotating shaft 305, the prepreg tape is tightened by positive rotation (in the same direction as the rotation direction of the torque motor). When the tension torque of the prepreg tape on the outer shell 302 of the driving shaft unit in the driving shaft component 3 is greater than the critical resistance of the disc damping rotating shaft 305, the damping rotating shaft starts to slip and reduces the tension of the prepreg tape, thereby ensuring that each prepreg tape is tightened separately.

[0016] A method for using a device for synchronously traction of several continuous carbon fiber prepregs is as follows:

[0017] S1. Cold air is introduced into the inner end of the driven mandrel 401;

[0018] S2. The traction execution mechanism 2 drives the traction jaw 1 to align the traction jaw 1 with multiple prepreg tapes that have completed longitudinal cutting;

[0019] S3. The clamping component 5 clamps the prepreg tape;

[0020] S4. The driving component 6 is started to rotate the driving mandrel 301. The disc damping rotating shaft 305 ensures the clamping of the prepreg tape. At this time, the outer shell 302 stops rotating, and the loading is completed;

[0021] S5. The traction execution mechanism 2 drives the traction jaw 1 to move along a predetermined track, and traction the prepreg tape to a short cutting device for short cutting;

[0022] S6. After entering the short cutting device, the clamping component 5 loosens the prepreg tape, and the driving mandrel 301 continues to rotate to separate the prepreg tape, and the unloading is completed.

[0023] Further, by repeating S2 - S5, the automatic traction of the carbon fiber tape can be realized.

[0024] A synchronous traction device for several continuous carbon fiber prepregs can achieve efficient and stable feeding of prepregs, replace manual labor to complete the traction of multiple material tapes, solve the problems of low efficiency, material deviation, deformation, etc. existing in manual traction during the short cutting process of prepregs, and thus realize further automation of the coil processing equipment.

[0025] Advantages of the present invention: The present invention designs a traction device between the longitudinal cutting of wide-width prepregs and the short cutting of narrow materials; designs an independent traction ring to achieve adaptive adjustment of the tension of multiple material tapes; designs anti-sticking traction claws for prepregs to achieve effective grasping and loosening of the material tapes; based on the design of the traction device, it is optimized, the trajectory of the traction mechanism is planned, and its automatic control is carried out. The synchronous traction device for several continuous carbon fiber prepregs can directly traction the material tapes to the short cutting processing equipment without passing through the narrow material winding after the longitudinal cutting is completed, greatly improving the production efficiency. Description of the Drawings

[0026] Figure 1 is an embodiment of using a synchronous traction device and method for several continuous carbon fiber prepregs;

[0027] Figure 2 is a schematic diagram of the traction claws in the embodiment;

[0028] Figure 3 is a schematic diagram of the driving shaft of the traction claws;

[0029] Figure 4 is a schematic diagram of the driven shaft of the traction claws;

[0030] Figure 5 is a schematic diagram of the clamping component of the traction claws;

[0031] Figure 6 is a schematic diagram of the driving component of the traction claws;

[0032] Figure 7 is a schematic diagram of the traction execution mechanism in the embodiment;

[0033] In the figure: 1 traction claws; 2 traction execution mechanism; 3 driving shaft component; 4 driven shaft component; 5 clamping component; 6 driving component; 301 driving core shaft; 302 outer shell; 303 rotary bearing; 304 connecting piece A; 305 disc damping rotating shaft; 306 connecting piece B; 401 driven core shaft; 402 driven outer shell; 403 bearing; 404 air flow hole; 405 exhaust hole; 501 clamping cylinder; 502 ball eye joint; 503 connecting shaft; 504 rotating plate; 505 fixed shaft; 506 claw bottom plate; 507 connecting piece; 601 torque motor; 602 synchronous pulley A; 603 synchronous pulley B; 604 synchronous belt; 701 X displacement shaft; 702 Y displacement shaft; 703 connecting plate. Detailed Embodiments

[0034] The following further describes the specific implementation manners of the present invention in conjunction with the accompanying drawings and technical solutions.

[0035] A synchronous traction device and method for several continuous carbon fiber prepregs, refer to Figure 1 The method is implemented based on a traction jaw 1 and a traction actuator 2. Refer to Figure 2 , the traction jaw 1 is used to realize the automatic clamping of multiple prepreg tapes and the adaptive adjustment of the prepreg tape tension, and includes a driving shaft component 3, a driven shaft component 4, a clamping component 5 and a driving component 6 for clamping the prepreg tape. The driving shaft component 3 and the driven shaft component 4 cooperate with each other to clamp the prepreg tape. The clamping component 5 is connected to the driven shaft component 4 and can drive the driven shaft component 4 to approach or leave the driving shaft component 3. The driving component 6 drives the driving shaft component 3 to rotate, and applies a certain tension to each prepreg tape for adjusting each prepreg tape located on the driving shaft component 3; the traction actuator 2 is used to drive the traction jaw 1 to move in the horizontal and vertical directions.

[0036] Refer to Figure 3 The driving shaft component 3 includes a driving core shaft 301 and a plurality of driving shaft units arranged on the driving core shaft 301. Each driving shaft unit includes a housing 302, a connecting piece A 304, a connecting piece B 306, a disc damping rotating shaft 305 and a rotating bearing 303. The two side ends of the disc damping rotating shaft 305 are respectively connected to the connecting piece A 304 and the connecting piece B 306 through fixing screws, and are used to provide a certain damping for the rotation of the housing 302. The connecting piece B 306 is fixed on the driving core shaft 301 through a set screw. The housing 302 is fixedly connected to the connecting piece A 304. The inside of the housing 302 is fixedly connected to the outer ring of the rotating bearing 303, and the inner ring of the rotating bearing 303 is fixedly connected to the driving core shaft 301. The rotating bearing 303 is used to maintain the smooth rotation of the housing 302. By adjusting the damping of the disc damping rotating shaft 305, the damping of the housing 302 rotation is adjusted.

[0037] Refer to Figure 4The driven shaft component 4 includes a driven core shaft 401 and a plurality of driven shaft units arranged on the driven core shaft 401. Each driven shaft unit includes a driven housing 402 and two bearings 403. The driven housing 402 is fixed on the outer rings of the two bearings 403 by set screws. The inner rings of the two bearings 403 are fixed on the driven core shaft 401. There is a certain space between the two bearings 403, and the positions of the bearings 403 are arranged on the driven core shaft 401 by circlips. The driven core shaft 401 is a hollow shaft with an air flow channel arranged inside. Air flow holes 404 are arranged along the axial direction. The positions of the air flow holes 404 are arranged at the middle positions of each driven housing 402. An exhaust hole 405 is arranged in the middle of each driven housing 402. The exhaust holes 405 correspond to the air flow holes 404 one by one. Cold air is introduced into the inner end of the driven core shaft 401. The cold air enters the inside of the driven housing 402 through the air flow holes 404 and then is blown out from the exhaust holes 405 on the driven housing 402.

[0038] Refer to Figure 5 The clamping component 5 includes a clamping cylinder 501, a spherical eye joint 502, a connecting shaft 503, a fixed shaft 505 and a rotating plate 504. Two rotating plates 504 are arranged in parallel to ensure stable and firm clamping. The spherical eye joint 502 on the clamping cylinder 501 is fixedly connected to the connecting shaft 503. Both ends of the connecting shaft 503 pass through the long circular limit holes in the middle sections of the two rotating plates 504 and can move in the long circular limit holes to ensure the driving effect of the clamping cylinder 501 on the driven core shaft 401. The lower sections of the two rotating plates 504 are rotatably connected to the fixed shaft 505 through bearings. The fixed shaft 505 is also rotatably connected to the connecting piece 507 through a bearing. The connecting piece 507 and the clamping cylinder 501 are both fixed on the jaw bottom plate 506. The driven core shaft 401 is fixedly connected to the rotating plate 504 through the holes in the upper sections of the two rotating plates 504. When clamping the strip, the clamping cylinder 501 quickly retracts. The spherical eye joint 502 drives the connecting shaft 503 to rotate the rotating plate 504, so that the driven core shaft 401 and the driving core shaft 301 are closed to clamp the strip.

[0039] Refer to Figure 6 The driving component 6 includes a torque motor 601, a synchronous pulley A602, a synchronous pulley B603 and a synchronous belt 604. The synchronous pulley A602 and the synchronous pulley B603 are connected by the synchronous belt 604. The synchronous pulley A602 is fixed to the output shaft of the torque motor 601. The torque motor 601 is fixed on the jaw bottom plate 506. The synchronous pulley B603 is fixed to the driving core shaft 301. The driving core shaft 301 is driven to rotate by the torque motor 601;

[0040] Refer to Figure 7 The traction actuator 2 includes an X displacement shaft 701 and a Y displacement shaft 702. The traction actuator 2 is connected to the traction jaw 1 through a connecting plate 703.

[0041] Further, the outer shell 302 of each driving shaft unit in the driving shaft component 3 corresponds to the driven outer shell 402 of each driven shaft unit in the driven shaft component 4 one by one, and multiple pairs of the outer shell 302 and the driven outer shell 402 are used to simultaneously traction multiple strips of material tapes.

[0042] Further, the disk damping rotating shaft 305 in each outer shell 302 of the driving mandrel 301 stops rotating when the pulling force of the material tape received by the outer shell 302 reaches the critical value of the disk damping rotating shaft 305 during the rotation of the driving mandrel 301, ensuring that each prepreg tape is tightened separately and avoiding the offset and wrinkle of the prepreg tape.

[0043] Further, the traction jaw 1 is arranged in a cantilever style;

[0044] Further, when the tension moment of the prepreg tape received by the outer shell 302 of the driving shaft unit in the driving shaft component 3 is less than the critical resistance of the disk damping rotating shaft 305, the prepreg tape is tightened by positive rotation (in the same direction as the rotation direction of the torque motor). When the tension moment of the prepreg tape received by the outer shell 302 of the driving shaft unit in the driving shaft component 3 is greater than the critical resistance of the disk damping rotating shaft 305, the damping rotating shaft starts to slip and reduces the tension of the prepreg tape, thereby ensuring that each prepreg tape is tightened separately.

[0045] The prepreg synchronous traction device can realize the efficient and stable feeding of the prepreg, replace manual labor to complete the traction of multiple material tapes, solve the problems of low efficiency, material offset, deformation, etc. existing in manual traction during the short cutting process of the prepreg, and thus realize the further automation of the material roll processing equipment.

[0046] A method for using a synchronous traction device for several continuous carbon fiber prepregs is as follows:

[0047] S1. Cold air is introduced into the inner end of the driven mandrel 401;

[0048] S2. The traction execution mechanism 2 drives the traction jaw 1 to align the traction jaw 1 with multiple prepreg tapes that have been longitudinally cut;

[0049] S3. The clamping cylinder 501 is retracted to clamp the prepreg tape;

[0050] S4. The torque motor 601 is started to rotate the driving mandrel 301, and the disk damping rotating shaft 305 ensures the clamping of the prepreg tape. At this time, the outer shell 302 stops rotating, and the feeding is completed;

[0051] S5. The traction execution mechanism 2 drives the traction jaw 1 to move along a predetermined trajectory to traction the prepreg tape to a short cutting device for short cutting;

[0052] S6. After entering the short cutting device, the clamping cylinder 501 extends to loosen the prepreg tape, and the driving mandrel 301 continues to rotate to separate the prepreg tape, and the discharging is completed.

[0053] Furthermore, by repeating S2 - S5, the automatic traction of the carbon fiber strip can be achieved.

[0054] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A synchronous traction device for several continuous carbon fiber prepregs, characterized in that, It includes a traction jaw (1) and a traction actuator (2); the traction jaw (1) is used to realize the automatic clamping of multiple prepreg tapes and the adaptive adjustment of the prepreg tape tension, and includes a driving shaft component (3), a driven shaft component (4), a clamping component (5) and a driving component (6) for clamping the prepreg tape; the driving shaft component (3) and the driven shaft component (4) cooperate with each other to clamp the prepreg tape, the clamping component (5) is connected to the driven shaft component (4) and can drive the driven shaft component (4) to approach or leave the driving shaft component (3), and the driving component (6) drives the driving shaft component (3) to rotate to apply a certain tension to each prepreg tape for adjusting each prepreg tape located on the driving shaft component (3); the traction actuator (2) is used to drive the traction jaw (1) to move in the horizontal and vertical directions; The driving shaft component (3) includes a driving core shaft (301) and a plurality of driving shaft units arranged on the driving core shaft (301). Each driving shaft unit includes a housing (302), a connecting piece A (304), a connecting piece B (306), a disc damping rotating shaft (305) and a rotating bearing (303); both ends of the disc damping rotating shaft (305) are connected to the connecting piece A (304) and the connecting piece B (306) respectively through fixing screws to provide a certain damping for the rotation of the housing (302). The connecting piece B (306) is fixed on the driving core shaft (301) through a set screw. The housing (302) is fixedly connected to the connecting piece A (304). The inside of the housing (302) is fixedly connected to the outer ring of the rotating bearing (303), and the inner ring of the rotating bearing (303) is fixedly connected to the driving core shaft (301). The rotating bearing (303) is used to maintain the stable rotation of the housing (302); by adjusting the damping of the disc damping rotating shaft (305), the damping of the rotation of the housing (302) is adjusted; The driven shaft component (4) includes a driven core shaft (401) and a plurality of driven shaft units arranged on the driven core shaft (401). Each driven shaft unit includes a driven housing (402) and two bearings (403). The driven housing (402) is fixed on the outer rings of the two bearings (403) through set screws. The inner rings of the two bearings (403) are fixed on the driven core shaft (401). There is a certain space between the two bearings (403), and the positions of the bearings (403) are arranged on the driven core shaft (401) through circlips. The driven core shaft (401) is a hollow shaft, and an air flow channel is arranged inside. Air flow holes (404) are arranged along the axis. The positions of the air flow holes (404) are arranged in the middle of each driven housing (402). An exhaust hole (405) is arranged in the middle of each driven housing (402). The exhaust holes (405) correspond to the air flow holes (404) one by one. Cold air is introduced into the inner end of the driven core shaft (401), and the cold air enters the inside of the driven housing (402) through the air flow holes (404) and then blows out from the exhaust holes (405) on the driven housing (402).

2. The synchronous traction device for several continuous carbon fiber prepregs according to claim 1, wherein The clamping component (5) includes a clamping cylinder (501), a spherical eye joint (502), a connecting shaft (503), a fixed shaft (505) and a rotating plate (504). Two rotating plates (504) are arranged in parallel to ensure stable and firm clamping. The spherical eye joint (502) on the clamping cylinder (501) is fixedly connected to the connecting shaft (503). Both ends of the connecting shaft (503) pass through the oblong limit holes in the middle sections of the two rotating plates (504) and can move in the oblong limit holes to ensure the driving effect of the clamping cylinder (501) on the driven mandrel (401). The lower sections of the two rotating plates (504) are rotatably connected to the fixed shaft (505) through bearings. The fixed shaft (505) is also rotatably connected to the connecting piece (507) through a bearing. The connecting piece (507) and the clamping cylinder (501) are both fixed on the jaw bottom plate (506). The driven mandrel (401) is fixedly connected to the rotating plate (504) through the holes in the upper sections of the two rotating plates (504). When clamping the strip, the clamping cylinder (501) quickly retracts, and the spherical eye joint (502) drives the connecting shaft (503) to rotate the rotating plate (504), so that the driven mandrel (401) and the driving mandrel (301) close together to clamp the strip.

3. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that, The driving component (6) includes a torque motor (601), a synchronous pulley A (602), a synchronous pulley B (603) and a synchronous belt (604). The synchronous pulley A (602) and the synchronous pulley B (603) are connected by the synchronous belt (604). The synchronous pulley A (602) is fixed to the output shaft of the torque motor (601). The torque motor (601) is fixed on the jaw bottom plate (506). The synchronous pulley B (603) is fixed to the driving mandrel (301). The driving mandrel (301) is driven to rotate by the torque motor (601).

4. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that The traction actuator (2) includes an X displacement shaft (701) and a Y displacement shaft (702). The traction actuator (2) is connected to the traction jaw (1) through a connecting plate (703).

5. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that, The housing (302) of each driving shaft unit in the driving shaft component (3) corresponds to the driven housing (402) of each driven shaft unit in the driven shaft component (4). Multiple pairs of the housing (302) and the driven housing (402) are used to simultaneously traction multiple strips.

6. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that, For the disc damping rotating shaft (305) in each housing (302) of the driving mandrel (301), when the driving mandrel (301) rotates, when the pulling force of the strip on the housing (302) reaches the critical value of the disc damping rotating shaft (305), it stops rotating, ensuring that each prepreg strip is tightened separately and avoiding the offset and wrinkling of the prepreg strip.

7. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that, The traction jaw (1) is arranged in a cantilever style.

8. A synchronous traction device for several continuous carbon fiber prepregs according to claim 1, characterized in that, When the tension moment of the prepreg tape on the outer shell (302) of the drive shaft unit in the drive shaft component (3) is less than the critical resistance of the disc damping rotating shaft (305), the prepreg tape is tightened by positive rotation. When the tension moment of the prepreg tape on the outer shell (302) of the drive shaft unit in the drive shaft component (3) is greater than the critical resistance of the disc damping rotating shaft (305), the damping rotating shaft starts to slip and reduces the tension of the prepreg tape, thereby ensuring that each prepreg tape is tightened respectively.

9. A method for using a synchronous traction device for several continuous carbon fiber prepregs according to any one of claims 1-8, characterized in that, The steps are as follows: S1. Cold air is introduced into the inner end of the driven mandrel (401). S2. The traction actuator (2) drives the traction jaw (1) to align the traction jaw (1) with multiple prepreg tapes that have been longitudinally cut. S3. The clamping component (5) clamps the prepreg tape. S4. The drive component (6) is started to rotate the drive mandrel (301). The disc damping rotating shaft (305) ensures that the prepreg tape is clamped. At this time, the outer shell (302) stops rotating, and the loading is completed. S6. After entering the short-cutting device, the clamping component (5) loosens the prepreg tape, and the drive mandrel (301) continues to rotate to separate the prepreg tape, and the unloading is completed. S7. The traction actuator (2) drives the traction jaw (1) to move along a predetermined trajectory to traction the prepreg tape to the short-cutting device for short-cutting. Repeat S2 - S5 to achieve the automatic traction of the carbon fiber tape.

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