Rolling forming device for composite graphite bipolar plate of hydrogen fuel cell

Abstract

The invention discloses a rolling forming device for a composite graphite bipolar plate of a hydrogen fuel cell. The rolling forming device comprises a base, one end of the top of the base is provided with a hydraulic rod, the other end of the hydraulic rod is connected with a top beam, the side wall of the top beam is provided with a first motor, the output end of the first motor is connected with a bidirectional screw rod, and an adjusting structure is distributed below the top beam; the adjusting structure comprises a threaded sleeve arranged on the outer surface of the two-way screw in a sleeving mode, a connecting lug is installed at the bottom of the threaded sleeve, a linkage rod is connected to the bottom of the connecting lug, and the other end of the linkage rod is connected with a lifting plate. Through the arrangement of the motor, the driving wheel, the driven wheel, the inner tooth belt, the compression roller and other structures, the angle and the like of the compression roller can be conveniently adjusted according to the actual rolling requirement when the material is subjected to rolling forming treatment subsequently, so that the material can be conveniently and better subjected to rolling forming treatment subsequently, and the overall practicability is higher.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fuel cell processing, and in particular to a rolling forming device for a composite graphite bipolar plate of a hydrogen fuel cell. Background Art

[0002] A hydrogen fuel cell is a device that converts chemical energy into electrical energy through a chemical reaction between hydrogen and oxygen. Hydrogen fuel cell bipolar plates are important components in fuel cells, used to store and conduct electric charge. Traditional bipolar plate manufacturing processes mostly use mechanical cutting, stamping or welding, which are inefficient and costly. In order to improve manufacturing efficiency and reduce costs, roll forming technology has been introduced into the manufacturing of fuel cell bipolar plates.

[0003] However, the existing hydrogen fuel cell composite graphite bipolar plate rolling forming device has certain limitations in the rolling forming process due to the poor flexibility of the device itself, that is, it is difficult to adjust the position of the pressure roller according to the actual rolling requirements, which leads to the need to frequently adjust the position of the material during subsequent roll forming to ensure better roll forming of the material. The overall practicality is poor and the efficiency is low. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a hydrogen fuel cell composite graphite bipolar plate rolling forming device, which can solve the technical problems of the existing hydrogen fuel cell composite graphite bipolar plate rolling forming device, which has certain limitations in the rolling forming process due to the poor flexibility of the device itself when rolling the material, that is, it is difficult to adjust the position of the pressure roller according to the actual rolling requirements, which leads to the need to frequently adjust the position of the material when rolling the material in the subsequent process, so as to ensure better rolling of the material, and the overall practicality is poor and the efficiency is low.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a hydrogen fuel cell composite graphite bipolar plate roll forming device, comprising a base, a hydraulic rod is installed at one end of the top of the base, and the other end of the hydraulic rod is connected to a top beam, a first motor is installed on the side wall of the top beam, and a bidirectional screw is connected to the output end of the first motor, and an adjustment structure is distributed below the top beam;

[0006] The adjusting structure includes a threaded sleeve sleeved on the outer surface of the bidirectional screw, and a connecting ear is installed at the bottom of the threaded sleeve, a linkage rod is connected to the bottom of the connecting ear, and the other end of the linkage rod is connected to a lifting plate, a second motor is installed at the middle of the top end of the lifting plate, and a driving wheel is connected to the output end of the second motor, an inner tooth belt is sleeved on the outer surface of the driving wheel, and a driven wheel is connected to the inner side of the other end of the inner tooth belt, a rotating frame is connected to the bottom of the driven wheel, and a third motor is installed on the side wall of the driven wheel, and a pressure roller is connected to the output end of the third motor.

[0007] As a preferred technical solution of the present invention, a base frame is distributed on one side of the hydraulic rod, and a bracket is welded to the surface of one end of the base frame, a fourth motor is installed on the end of the bracket away from the base frame, and a reducer is connected to the output end of the fourth motor, and a transmission roller is connected to the other end of the reducer, and a conveyor belt is sleeved on the surface of the transmission roller, and an auxiliary roller is distributed on one side of the transmission roller.

[0008] As a preferred technical solution of the present invention, a workbench is provided on the upper surface of the conveyor belt, and an electric push rod is installed on the side wall of the workbench, the output end of the electric push rod is connected to a splint, a pull rod is distributed on one side of the electric push rod, a guide block is installed in the middle of the bottom end of the splint, and a rubber pad is provided on the upper surface of the workbench.

[0009] As a preferred technical solution of the present invention, a collection box is distributed under the base frame, and a buffer plate is provided in the inner cavity of the collection box, a damper is connected to the middle of the bottom end of the buffer plate, one side of the buffer plate is slidably connected to a vertical rod through a slider, and a buffer spring is sleeved on the outer surface of the vertical rod.

[0010] As a preferred technical solution of the present invention, the threaded sleeve is threadedly connected with the bidirectional screw via a thread groove, and the threaded sleeve is symmetrically distributed along the vertical center line of the top beam.

[0011] As a preferred technical solution of the present invention, both ends of the linkage rod are rotationally connected with the threaded sleeve and the lifting plate respectively through the connecting ears, and the linkage rod is symmetrically distributed along the vertical center line of the lifting plate.

[0012] As a preferred technical solution of the present invention, the driving wheel and the internal toothed belt are meshedly connected, and the internal toothed belt and the driven wheel are also meshedly connected, and the driven wheel and the lifting plate are rotationally connected.

[0013] As a preferred technical solution of the present invention, the rotating frame and the driven wheel are fixedly connected, and the rotating frame is symmetrically distributed along the vertical center line of the top beam.

[0014] As a preferred technical solution of the present invention, the clamping plates are slidably connected to the workbench through the pull rod, and the clamping plates are symmetrically distributed on both sides of the workbench.

[0015] As a preferred technical solution of the present invention, the buffer plate is slidably connected to the vertical rod through a slider, and the vertical rods are equidistantly distributed along the center point of the buffer plate. The arrangement of the vertical rods can improve the stability of the buffer plate during its longitudinal movement.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0017] 1. By setting the motor, driving wheel, driven wheel, inner tooth belt and pressure roller and other structures, it is convenient to adjust the angle of the pressure roller according to the actual rolling requirements when rolling the material in the future, so as to facilitate the subsequent rolling of the material better, and the overall practicality is higher. When the second motor is working, the driving wheel connected to its output end will rotate accordingly. At this time, the rotation of the driving wheel drives the inner tooth belt to move accordingly. Since the inner tooth belt is meshed and connected with the driving wheel and the driven wheel, the movement of the inner tooth belt can realize the rotation of the driven wheel, which is convenient for the subsequent use of the movement of the driven wheel to realize the angle adjustment of the rotating frame, and it is convenient for the subsequent adjustment of the angle position of the pressure roller according to the actual use requirements;

[0018] 2. By setting up the workbench, electric push rod, clamping plate and pull rod and other structures, it is convenient to effectively clamp and limit the material to be rolled during the roll forming process, ensure the stability of the material in the subsequent rolling process, prevent positional deviation, and cause subsequent rolling errors. When the electric push rod is working, it will drive the clamping plate to move horizontally, and then place the material to be rolled on the surface of the workbench. Then, the electric push rod will drive the clamping plate to move in the opposite direction, and then the clamping plates moving towards each other on both sides can be combined to clamp and limit the material to be rolled, and the set pull rod is used to improve the stability of the clamping plate during the lateral movement;

[0019] 3. By setting up structures such as the collection box, buffer plate, damper and buffer spring, it is convenient to collect the roll-formed materials in a centralized manner, and to carry out centralized processing. At the same time, it can provide buffering protection for the materials when they fall into the collection box. When the buffer plate moves longitudinally, it will press down the damper set in the middle of its bottom end to achieve the deformation of the damper. At the same time, the buffer plate will slide along the vertical rod through the slider, and drive the buffer spring to deform accordingly. Then, the reverse force generated by the deformation of the damper and buffer spring can achieve the purpose of buffering protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the roll-forming device for the composite graphite bipolar plate of a hydrogen fuel cell of the present invention;

[0021] Figure 2 This is a schematic diagram of the top beam structure of the roll-forming device for the composite graphite bipolar plate of a hydrogen fuel cell according to the present invention when viewed from above;

[0022] Figure 3 It is a side structural schematic diagram of a lifting plate of a rolling forming device for composite graphite bipolar plates of hydrogen fuel cells of the present invention;

[0023] Figure 4 It is a schematic diagram of the side view of the bottom frame of the roll forming device for the composite graphite bipolar plate of the hydrogen fuel cell of the present invention;

[0024] Figure 5 The invention provides a rolling forming device for the composite graphite bipolar plate of a hydrogen fuel cell Figure 4 The enlarged structural diagram at A in the middle;

[0025] Figure 6 This is a bottom view structural schematic diagram of the roll forming device for the composite graphite bipolar plate of a hydrogen fuel cell of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the chassis of the roll-forming device for the composite graphite bipolar plate of a hydrogen fuel cell of the present invention;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the collecting box of the roll-forming device for the composite graphite bipolar plate of the hydrogen fuel cell of the present invention.

[0028] Among them: 1. base; 2. hydraulic rod; 3. top beam; 4. first motor; 5. bidirectional screw; 6. threaded sleeve; 7. connecting ear; 8. linkage rod; 9. lifting plate; 10. second motor; 11. driving wheel; 12. internal tooth belt; 13. driven wheel; 14. rotating frame; 15. third motor; 16. pressure roller; 17. base frame; 18. bracket; 19. fourth motor; 20. reducer; 21. transmission roller; 22. conveyor belt; 23. auxiliary roller; 24. workbench; 25. electric push rod; 26. clamping plate; 27. pull rod; 28. guide block; 29. ​​rubber pad; 30. collection box; 31. buffer plate; 32. damper; 33. vertical rod; 34. buffer spring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the present invention provides a hydrogen fuel cell composite graphite bipolar plate rolling forming device, comprising a base 1, a hydraulic rod 2 is installed at one end of the top of the base 1, and the other end of the hydraulic rod 2 is connected to a top beam 3, a first motor 4 is installed on the side wall of the top beam 3, and a bidirectional screw 5 is connected to the output end of the first motor 4, and an adjustment structure is distributed below the top beam 3; the adjustment structure comprises a threaded sleeve 6 sleeved on the outer surface of the bidirectional screw 5, and a connecting ear 7 is installed at the bottom of the threaded sleeve 6, a linkage rod 8 is connected to the bottom of the connecting ear 7, and a lifting plate 9 is connected to the other end of the linkage rod 8, a second motor 10 is installed at the middle of the top of the lifting plate 9, and a driving wheel 11 is connected to the output end of the second motor 10, an inner tooth belt 12 is sleeved on the outer surface of the driving wheel 11, and a driven wheel 13 is connected to the inner side of the other end of the inner tooth belt 12, a rotating frame 14 is connected to the bottom of the driven wheel 13, and a third motor 15 is installed on the side wall of the driven wheel 13, and a pressure roller 16 is connected to the output end of the third motor 15;

[0031] When in use, the material to be rolled is placed on the upper surface of the workbench 24, and then the position and height of the top beam 3 are adjusted so that the pressing roller 16 is attached to the upper surface of the material to be rolled, and then the material is rolled by rotating the pressing roller 16;

[0032] As a further implementation of this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, a hydraulic rod 2 is installed at one end of the top of the base 1, and the other end of the hydraulic rod 2 is connected to a top beam 3, a first motor 4 is installed on the side wall of the top beam 3, and the output end of the first motor 4 is connected to a bidirectional screw 5, and an adjustment structure is distributed below the top beam 3; the adjustment structure includes a threaded sleeve 6 sleeved on the outer surface of the bidirectional screw 5, and a connecting ear 7 is installed at the bottom of the threaded sleeve 6, the threaded sleeve 6 is threadedly connected with the bidirectional screw 5 through a thread groove, and the threaded sleeve 6 is symmetrically distributed along the vertical center line of the top beam 3, a linkage rod 8 is connected to the bottom of the connecting ear 7, and the other end of the linkage rod 8 is connected to a lifting plate 9, and the two ends of the linkage rod 8 are respectively rotatably connected with the threaded sleeve 6 and the lifting plate 9 through the connecting ears 7, and the linkage rod 8 is rotated along the vertical axis of the lifting plate 9. The lifting plate 9 is symmetrically distributed along the straight center line, a second motor 10 is installed in the middle of the top end of the lifting plate 9, and the output end of the second motor 10 is connected to a driving wheel 11, the driving wheel 11 is meshed with the inner tooth belt 12, and the inner tooth belt 12 is also meshed with the driven wheel 13, and the driven wheel 13 is rotatably connected to the lifting plate 9, the outer surface of the driving wheel 11 is sleeved with the inner tooth belt 12, and the other end of the inner tooth belt 12 is connected to the driven wheel 13, the bottom of the driven wheel 13 is connected to a rotating frame 14, and the side wall of the driven wheel 13 is installed with a third motor 15, the rotating frame 14 is fixedly connected to the driven wheel 13, and the rotating frame 14 is symmetrically distributed along the vertical center line of the top beam 3, and the output end of the third motor 15 is connected to a pressure roller 16;

[0033] When the material needs to be roll-formed, the hydraulic rod 2 is used to adjust the position height of the top beam 3. After the adjustment is completed, the first motor 4 is used to realize the rotation of the bidirectional screw 5. Since the bidirectional screw 5 and the threaded sleeve 6 are threadedly connected through the thread groove, the movement of the threaded sleeve 6 can be realized by rotating the bidirectional screw 5. At this time, the lateral movement of the threaded sleeve 6 pushes the linkage rod 8 through the connecting ear 7, and then the other end of the linkage rod 8 pushes the lifting plate 9 through the connecting ear 7, so as to realize the lifting and lowering of the lifting plate 9, so that the position height of the pressure roller 16 can be further realized, which is convenient for the subsequent improvement of the entire The accuracy of the device during operation, after the adjustment is completed, the third motor 15 works to realize the rotation of the pressure roller 16, which can facilitate the subsequent coordinated movement of the workbench 24 to roll-form the material. When the angle of the pressure roller 16 needs to be adjusted, the second motor 10 works to rotate the driving wheel 11 connected to its output end, and the driving wheel 11 drives the inner tooth belt 12 to move accordingly. The meshing connection between the inner tooth belt 12 and the driven wheel 13 is used to realize the movement of the rotating frame 14 along the lifting plate 9, so that the angle of the pressure roller 16 can be adjusted later, which is convenient for better rolling forming of the material later.

[0034] As a further implementation of this embodiment, Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a base frame 17 is distributed on one side of the hydraulic rod 2, and a bracket 18 is welded to the surface of one end of the base frame 17, a fourth motor 19 is installed on the end of the bracket 18 away from the base frame 17, and a reducer 20 is connected to the output end of the fourth motor 19, and a transmission roller 21 is connected to the other end of the reducer 20, and a conveyor belt 22 is sleeved on the surface of the transmission roller 21, and an auxiliary roller 23 is distributed on one side of the transmission roller 21, and a workbench 24 is arranged on the upper surface of the conveyor belt 22 which is rotatably connected between the auxiliary roller 23 and the base frame 17, and an electric push rod 25 is installed on the side wall of the workbench 24, and a clamping plate 26 is connected to the output end of the electric push rod 25, and the clamping plate 26 is slidably connected to the workbench 24 through a pull rod 27, and the clamping plates 26 are symmetrically distributed on both sides of the workbench 24, and a pull rod 27 is distributed on one side of the electric push rod 25, and a guide block 28 is installed in the middle of the bottom end of the clamping plate 26, and a rubber pad 29 is arranged on the upper surface of the workbench 24;

[0035] First, the material to be rolled is placed on the upper surface of the workbench 24 so that it contacts the rubber pad 29, thereby increasing the friction between the two. The material is made of rubber and can play a simple protective role for the material. Then the electric push rod 25 works to drive the clamping plates 26 on both sides to move towards each other, and then the movement of the clamping plates 26 can be used to clamp and limit the material to be rolled. When the clamping plates 26 move horizontally, they will drive the guide blocks 28 to slide along the guide grooves opened on one side of the top of the workbench 24. At the same time, the pull rod 27 will also move horizontally on the inner side of the workbench 24, thereby improving the stability of the clamping plates 26 during the horizontal movement, which is convenient for better clamping and limiting the material. When the material is clamped, the fourth motor 19 works to rotate the transmission roller 21 connected to the output end through the rotating shaft, and then the meshing connection between the transmission roller 21 and the conveyor belt 22 is used to realize the movement of the conveyor belt 22, so as to facilitate the subsequent conveying of the workbench 24 to the bottom of the pressure roller 16, so as to facilitate the rapid roll forming of the material, and the auxiliary roller 23 is used to provide auxiliary support.

[0036] As a further implementation of this embodiment, Figure 1 , Figure 4 and Figure 8 As shown, a collecting box 30 is distributed below the base frame 17, and a buffer plate 31 is provided in the inner cavity of the collecting box 30, the buffer plate 31 is slidably connected with a vertical rod 33 through a slider, and the vertical rod 33 is equidistantly distributed along the center point of the buffer plate 31, a damper 32 is connected to the middle of the bottom end of the buffer plate 31, one side of the buffer plate 31 is slidably connected to the vertical rod 33 through a slider, and a buffer spring 34 is sleeved on the outer surface of the vertical rod 33;

[0037] When the roll-formed material is conveyed to the bottom of the base frame 17, that is, directly above the collection box 30, the electric push rod 25 drives the clamping plate 26 to move toward each other. At this time, the roll-formed material leaves the workbench 24 and falls onto the upper surface of the buffer plate 31 along the inclined surface set on the inner side of the collection box 30. Then the buffer plate 31 moves longitudinally under the action of gravity. At this time, the buffer plate 31 presses down the damper 32 set in the middle part of its bottom end to achieve the deformation of the damper 32. At the same time, the buffer plate 31 squeezes the buffer spring 34 along the vertical rod 33 through the slider, thereby achieving the deformation of the buffer spring 34. The reverse force generated by the deformation of the buffer spring 34 and the damper 32 can achieve the purpose of buffering protection, which is convenient for the subsequent centralized collection of the roll-formed materials.

[0038] The specific working principle is as follows: first, the material to be rolled is placed on the upper surface of the workbench 24 so that it contacts the rubber pad 29, thereby increasing the friction between the two. At the same time, the rubber pad 29 is made of rubber material, which can play a simple protective role for the material. Then, the electric push rod 25 drives the clamping plates 26 on both sides to move toward each other, and then the movement of the clamping plates 26 can be used to clamp and limit the material to be rolled. When the clamping plates 26 move horizontally, they will drive the guide blocks 28 to slide along the guide grooves provided on one side of the top of the workbench 24. At the same time, the pull rod 27 will also move horizontally on the inner side of the workbench 24, thereby improving the stability of the clamping plates 26 during the horizontal movement, so as to facilitate better clamping and limiting of the material. When the material is clamped, the fourth motor 19 works to rotate the transmission roller 21 connected to the output end through the rotating shaft, thereby utilizing the transmission The meshing connection between the roller 21 and the conveyor belt 22 realizes the movement of the conveyor belt 22, which facilitates the subsequent conveying of the workbench 24 to the bottom of the pressure roller 16, and is convenient for quickly rolling the material. The auxiliary roller 23 is used for the purpose of auxiliary support. When the material needs to be roll-formed, the hydraulic rod 2 is used to adjust the position height of the top beam 3. After the adjustment is completed, the first motor 4 is used to realize the rotation of the bidirectional screw 5. Since the bidirectional screw 5 and the threaded sleeve 6 are threadedly connected through the thread groove, the movement of the threaded sleeve 6 can be realized by rotating the bidirectional screw 5. At this time, the lateral movement of the threaded sleeve 6 pushes the linkage rod 8 through the connecting ear 7, thereby making the linkage The other end of the rod 8 pushes the lifting plate 9 through the connecting ear 7 to realize the lifting and lowering of the lifting plate 9, so as to further realize the position height of the pressure roller 16, which is convenient for improving the accuracy of the entire device during operation. After the adjustment is completed, the third motor 15 works to realize the rotation of the pressure roller 16, which is convenient for the subsequent coordinated moving workbench 24 to roll-form the material. When the angle of the pressure roller 16 needs to be adjusted, the second motor 10 works to rotate the driving wheel 11 connected to its output end. At this time, the driving wheel 11 drives the inner tooth belt 12 to move accordingly, and the meshing connection between the inner tooth belt 12 and the driven wheel 13 is used to realize the movement of the rotating frame 14 along the lifting plate 9, so The subsequent adjustment of the angle of the pressure roller 16 can be facilitated, so as to facilitate the subsequent better roll-forming of the material. When the roll-formed material is transported to the bottom of the base frame 17, that is, directly above the collection box 30, the electric push rod 25 drives the clamping plate 26 to move toward each other. At this time, the roll-formed material leaves the workbench 24 and falls onto the upper surface of the buffer plate 31 along the inclined surface set on the inner side of the collection box 30. Then, the buffer plate 31 moves longitudinally under the action of gravity. At this time, the buffer plate 31 presses down the damper 32 set in the middle part of its bottom end to realize the deformation of the damper 32. At the same time, the buffer plate 31 squeezes the buffer spring 34 along the vertical rod 33 through the slider, thereby realizing the deformation of the buffer spring 34.The reverse force generated by the deformation of the buffer spring 34 and the damper 32 can achieve the purpose of buffer protection, making it convenient to collect the rolled materials in a centralized manner.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rolling forming device for a composite graphite bipolar plate for a hydrogen fuel cell, comprising a base (1), characterized in that: A hydraulic rod (2) is installed at one end of the top of the base (1), and the other end of the hydraulic rod (2) is connected to a top beam (3), a first motor (4) is installed on the side wall of the top beam (3), and a bidirectional screw rod (5) is connected to the output end of the first motor (4), and an adjustment structure is distributed below the top beam (3); The adjustment structure comprises a threaded sleeve (6) sleeved on the outer surface of the bidirectional screw (5), and a connecting ear (7) is installed at the bottom of the threaded sleeve (6), a linkage rod (8) is connected to the bottom of the connecting ear (7), and the other end of the linkage rod (8) is connected to a lifting plate (9), a second motor (10) is installed at the middle of the top end of the lifting plate (9), and the output end of the second motor (10) is connected to a driving wheel (11), an inner toothed belt (12) is sleeved on the outer surface of the driving wheel (11), and the other end of the inner toothed belt (12) is connected to a driven wheel (13), the bottom of the driven wheel (13) is connected to a rotating frame (14), and a third motor (15) is installed on the side wall of the driven wheel (13), and the output end of the third motor (15) is connected to a pressure roller (16).

2. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 1, characterized in that: A base frame (17) is distributed on one side of the hydraulic rod (2), and a bracket (18) is welded to the surface of one end of the base frame (17), a fourth motor (19) is installed on the end of the bracket (18) away from the base frame (17), and a reducer (20) is connected to the output end of the fourth motor (19), and a transmission roller (21) is connected to the other end of the reducer (20), and a conveyor belt (22) is sleeved on the surface of the transmission roller (21), and an auxiliary roller (23) is distributed on one side of the transmission roller (21).

3. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 2, characterized in that: A workbench (24) is provided on the upper surface of the conveyor belt (22), and an electric push rod (25) is installed on the side wall of the workbench (24), the output end of the electric push rod (25) is connected to a clamping plate (26), a pull rod (27) is distributed on one side of the electric push rod (25), a guide block (28) is installed in the middle of the bottom end of the clamping plate (26), and a rubber pad (29) is provided on the upper surface of the workbench (24).

4. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 2, characterized in that: A collection box (30) is distributed below the base frame (17), and a buffer plate (31) is provided in the inner cavity of the collection box (30), a damper (32) is connected to the middle of the bottom end of the buffer plate (31), a vertical rod (33) is slidably connected to one side of the buffer plate (31) via a slider, and a buffer spring (34) is sleeved on the outer surface of the vertical rod (33).

5. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 1, characterized in that: The threaded sleeve (6) is threadedly connected to the bidirectional screw rod (5) via a thread groove, and the threaded sleeve (6) is symmetrically distributed along the vertical center line of the top beam (3).

6. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 1, characterized in that: The two ends of the linkage rod (8) are rotationally connected to the threaded sleeve (6) and the lifting plate (9) respectively through the connecting ears (7), and the linkage rod (8) is symmetrically distributed along the vertical center line of the lifting plate (9).

7. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 1, characterized in that: The driving wheel (11) and the inner toothed belt (12) are meshedly connected, and the inner toothed belt (12) and the driven wheel (13) are also meshedly connected, and the driven wheel (13) and the lifting plate (9) are rotationally connected.

8. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 1, characterized in that: The rotating frame (14) and the driven wheel (13) are fixedly connected, and the rotating frame (14) is symmetrically distributed along the vertical center line of the top beam (3).

9. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 3, characterized in that: The clamping plates (26) are slidably connected to the workbench (24) via the pull rod (27), and the clamping plates (26) are symmetrically distributed on both sides of the workbench (24).

10. The rolling forming device for composite graphite bipolar plates for hydrogen fuel cells according to claim 4, characterized in that: The buffer plate (31) is slidably connected to the vertical rod (33) via a slider, and the vertical rods (33) are equidistantly distributed along the center point of the buffer plate (31).

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