Hydrogen fuel cell bipolar plate curing and hold pressure device

Abstract

The application relates to the technical field of plate production, in particular to a hydrogen fuel cell bipolar plate curing and pressure maintaining device, which comprises a workbench and a conveyor, a lower pressing plate, a placing mechanism and a lifting mechanism are sequentially arranged on the workbench from top to bottom, a conveying mechanism for transferring the plates is further arranged between the conveyor and the workbench, a pressure maintaining mechanism and a heating plate are arranged on the conveyor. According to the technical scheme, the two plates are separated from the placing mechanism through the lifting mechanism, meanwhile, the pressure maintaining mechanism cooperates with the lower pressing plate, so that the conveying mechanism can transfer the two plates to the conveyor for conveying, and the pressure maintaining mechanism ensures the pressure between the two plates during the transferring and conveying process; the heating plate is used for increasing the temperature inside the tunnel, so that the glue curing process is accelerated; the tunnel is used for preventing the rapid diffusion of the temperature and reducing the energy loss.

Description

Technical Field

[0001] This invention relates to the field of electrode plate production technology, specifically to a device for curing and maintaining pressure on bipolar plates of hydrogen fuel cells. Background Technology

[0002] Bipolar plates are a crucial component of fuel cells. Based on their materials, bipolar plates can be categorized into graphite bipolar plates, metal bipolar plates, and composite material bipolar plates. Each of these three types of materials has its own advantages and disadvantages. Most existing bipolar plates consist of two monopolar plates joined together with adhesive. After adhesive bonding, the bipolar plates require a pressure-holding process before curing. This pressure-holding process ensures a tight bond between the adhesive-bonded bipolar plates. Current technology addresses this by applying pressure to individual bipolar plates one by one, resulting in low efficiency and hindering production line automation. Existing technologies address this by setting multiple pressure-holding stations and adjusting their height. This allows the pressure-holding device to sequentially transfer bipolar plates through staggered stations and lifting mechanisms, increasing the pressure-holding effect. However, this solution requires a significant amount of space, and the sequential pressure-holding process, while improving efficiency through multiple stations, complicates the structure and increases production costs. Summary of the Invention

[0003] To address the problems existing in the prior art, a hydrogen fuel cell bipolar plate curing and pressure holding device is provided.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A hydrogen fuel cell bipolar plate curing and pressure holding device includes a worktable and a conveyor. From top to bottom, a lower pressure plate, a placement mechanism, and a lifting mechanism are sequentially arranged on the worktable. The lower pressure plate is slidably mounted on the worktable and is used to pre-compress the two bipolar plates. The placement mechanism is used to install the bipolar plates, and the lifting mechanism is used to adjust the height of the bipolar plates placed in the placement mechanism. The conveyor is located on one side of the worktable for conveying the bipolar plates. A transport mechanism for transferring the bipolar plates is also provided between the conveyor and the worktable. A pressure holding mechanism is also provided at the top of the conveyor. A tunnel for conveying the bipolar plates is formed between the pressure holding mechanism and the conveyor. A heating plate is installed inside the tunnel. When the two bipolar plates are transferred into the tunnel, the pressure holding mechanism is used to press against the two bipolar plates on the conveyor, and the heating plate is used to increase the temperature inside the tunnel.

[0005] Preferably, a horizontal plate is also provided in the middle part of the workbench, with one end of the horizontal plate located on the outside of the workbench, and the mounting mechanism is slidably mounted on the horizontal plate.

[0006] Preferably, the mounting mechanism includes a base plate and a snap-fit ​​plate. The base plate is slidably mounted on a horizontal plate and has a pin. The snap-fit ​​plate is mounted on the base plate and has a slot corresponding to the pin. The snap-fit ​​plate also has a slot for mounting the electrode plate.

[0007] Preferably, the horizontal plate is provided with a guide groove, the bottom end of the base plate is provided with a guide slider that is slidably connected to the guide groove, the bottom end of the guide slider is provided with a slide plate, the slide plate is connected to the guide slider by bolts, the slide plate abuts against the bottom end of the horizontal plate, and the slide plate is slidably connected to the horizontal plate.

[0008] Preferably, the lifting mechanism includes a push plate, a first abutment block, a bracket, and a second abutment block. The push plate is disposed between the base plate and the snap-fit ​​plate. An extension block is disposed on the push plate and passes through the base plate. The bottom end of the extension block is connected to the first abutment block. The bracket is disposed at the bottom end of the workbench. A first threaded rod is disposed on the bracket and is threadedly connected to the second abutment block. The second abutment block is used to push the first abutment block.

[0009] Preferably, the base plate is provided with an opening for the extension block to pass through, the opening is provided with a plurality of evenly distributed limiting grooves, and the extension block is provided with a limiting slider corresponding to the limiting groove.

[0010] Preferably, the conveying mechanism includes a pusher block, a clamping plate, and a gear. The pusher plate is attached to the top of the horizontal plate, the bottom of the pusher block is higher than the top of the bottom plate, one end of the pusher block is provided with a stop plate for increasing the area of ​​the pusher block, and the other end of the pusher block is provided with a rack for sliding connection with the conveyor. The gear is mounted on the conveyor and meshes with the rack. The clamping plate is mounted on the conveyor for fixing the gear. When the lifting mechanism is working, the top of the pusher plate will be on the same plane as the bottom of the pusher block.

[0011] Preferably, the pressure-holding mechanism includes a housing, a pressure plate, a second threaded rod, and a transmission rod. The housing is located outside the conveyor and covers the output end of the conveyor. The pressure plate is located inside the housing. A sliding rod is provided at the top of the pressure plate. A vent hole is provided on the pressure plate. A ball bearing is also provided on the pressure plate. The second threaded rod is located at the top of the housing. At least two transmission rods are provided. The middle parts of the two transmission rods are hinged to each other. The connection between the two transmission rods is used to connect the sliding rod and the second threaded rod, respectively.

[0012] The advantages of this invention compared to the prior art are as follows: 1. This application uses a lifting mechanism to separate the two electrode plates from the placement mechanism, while a pressure-holding mechanism works in conjunction with a lower pressure plate to facilitate the transfer of the two electrode plates to the conveyor for transport. The pressure-holding mechanism maintains the pressure between the two electrode plates during the transfer and transport process. The heating plate is used to increase the temperature inside the tunnel, thereby accelerating the curing process of the adhesive. The tunnel is used to prevent rapid temperature diffusion and reduce energy loss.

[0013] 2. This application sets a horizontal plate with one end located on the outside of the workbench and allows the placement mechanism to slide on the horizontal plate. This facilitates the operator to install the electrode plates and perform the adhesive dispensing process manually or with existing technologies such as robotic arms. Afterward, the two bonded electrode plates move together with the placement mechanism, so that the two electrode plates are placed between the lower pressure plate and the lifting mechanism for pre-pressing. This allows the electrode plates to be quickly pressure-held and reinforced after the adhesive dispensing is completed.

[0014] 3. This application uses a slot to install the electrode plate, preventing the electrode plate from moving on the mounting plate. Then, the slot and socket fix the mounting plate on the base plate, allowing the mounting plate to move with the base plate. When the lifting mechanism works, it will lift the mounting plate, separating the slot from the pin, which facilitates the movement of the mounting plate and the electrode plate together. This prevents the pressure plate, pressure holding mechanism, and lifting mechanism from directly contacting the electrode plate, which could damage the electrode plate.

[0015] 4. This application causes the gear to rotate, thereby driving the rack to slide at the bottom of the horizontal plate. The top of the push plate will remain parallel to the top of the horizontal plate under the action of the limiting slide groove, which facilitates the push block to pull the snap-fit ​​plate on the push plate, so that the snap-fit ​​block moves with the push block and is transferred to the conveyor, preventing the snap-fit ​​block from being stuck by the bottom plate and affecting the transfer effect. Attached Figure Description

[0016] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 for Figure 1 A magnified view of a portion at point A; Figure 3 for Figure 1 A magnified view of a portion at point B; Figure 4 The three-dimensional representation of the present invention Figure 2 ; Figure 5 for Figure 4 A magnified view of a portion at point C; Figure 6 The three-dimensional structure behind the concealed transmission machine, pressure holding mechanism, and conveying mechanism of this invention Figure 1 ; Figure 7 for Figure 6A magnified view of a portion at point D; Figure 8 To invent a three-dimensional structure that conceals the transmission mechanism, pressure holding mechanism, and conveying mechanism. Figure 2 ; Figure 9 for Figure 8 A magnified view of a portion at point E; Figure 10 for Figure 8 A magnified view of a portion of point F.

[0017] The numbers on the map are: 1-Workbench; 11-Horizontal plate; 111-Guide slide; 2-Transmitter; 3-Lower pressure plate; 4-Placing mechanism; 41-Base plate; 411-Pin; 412-Guide slider; 4121-Slide plate; 413-Opening; 4131-Limit slide; 42-Snap-fit ​​plate; 421-Slot; 422-Slot; 5-Lifting mechanism; 51-Push plate; 511-Extension block; 5111-Limit slider; 5 2-First abutting block; 53-Bracket; 531-First threaded rod; 54-Second abutting block; 6-Conveying mechanism; 61-Pushing block; 611-Abutting plate; 612-Rack; 62-Clamping plate; 63-Gear; 7-Pressure holding mechanism; 71-Tunnel; 72-Casing; 73-Pressure plate; 731-Slide rod; 732-Ventilation hole; 733-Ball bearing; 74-Second threaded rod; 75-Transmission rod; 8-Electric plate. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figures 1 to 10 As shown; a hydrogen fuel cell bipolar plate curing and pressure holding device includes a workbench 1 and a conveyor 2. The workbench 1 is arranged from top to bottom with a lower pressure plate 3, a placement mechanism 4, and a lifting mechanism 5. The lower pressure plate 3 is slidably mounted on the workbench 1 and is used to pre-press the two bipolar plates 8. The placement mechanism 4 is used to install the bipolar plates 8, and the lifting mechanism 5 is used to adjust the height of the bipolar plates 8 in the placement mechanism 4. The conveyor 2 is located on one side of the workbench 1 for conveying the bipolar plates 8. A conveying mechanism 6 for transferring the bipolar plates 8 is also provided between the conveyor 2 and the workbench 1. A pressure holding mechanism 7 is also provided at the top of the conveyor 2. A tunnel 71 for conveying the bipolar plates 8 is formed between the pressure holding mechanism 7 and the conveyor. A heating plate is provided inside the tunnel 71. When the two bipolar plates 8 are transferred into the tunnel 71, the pressure holding mechanism 7 is used to press against the two bipolar plates 8 on the conveyor 2, and the heating plate is used to increase the temperature inside the tunnel 71.

[0020] First, the operator installs one electrode plate on the placement mechanism 4. Then, the operator needs to apply adhesive to the electrode plate 8. After application, the other electrode plate 8 needs to be connected to the one with adhesive. Finally, the lower pressure plate 3 pre-presses the two electrode plates 8 according to the actual situation. During this process, the lifting mechanism 5 separates the two electrode plates 8 from the placement mechanism 4. The pressure holding mechanism 7 moves with the lower pressure plate 3, maintaining its position at the lowest point during the movement of the lower pressure plate 3. This facilitates the conveying mechanism 6 transferring the two electrode plates 8 to the conveyor 2 for transport. During the transfer process, the pressure holding mechanism 7 continuously... Located at the lowest point of the lower pressure plate 3, the tops of the two connected electrode plates 8 are kept in contact with the pressure holding mechanism 7 and the bottom of the lower pressure plate 3. The bottoms of the two connected electrode plates 8 are kept in contact with the top of the lifting mechanism 5 and the conveying end of the conveyor 2. This ensures that both the tops and bottoms of the two electrode plates 8 are in contact during transfer and conveying, maintaining the pressure between them within the moving range and achieving the pressure holding process. The heating plate is used to increase the temperature inside the tunnel 71, thereby accelerating the curing process of the adhesive. The tunnel 71 is used to prevent rapid temperature diffusion and reduce energy loss. This technical solution improves upon existing technologies such as the conveyor, enabling the bipolar plates to simultaneously perform pressure holding and curing processes during transmission, thus increasing work efficiency. It eliminates the need for multiple pressure holding stations, reducing space requirements, and also lowers the manufacturing cost of the mechanism by utilizing the existing conveyor structure. It should be noted that the heating plate is existing technology and is therefore not shown in the figure.

[0021] A horizontal plate 11 is also provided in the middle of the workbench 1. One end of the horizontal plate 11 is located on the outside of the workbench 1, and the mounting mechanism 4 is slidably mounted on the horizontal plate 11.

[0022] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown; firstly, the mounting mechanism 4 on the horizontal plate 11 is moved so that the mounting mechanism 4 is located outside the worktable 1. At this time, it is convenient for the operator to install the electrode plate 8 and perform the glue application process manually or with existing technology such as a robotic arm. Then, the two bonded electrode plates 8 are moved together with the mounting mechanism 4 so that the two electrode plates 8 are placed between the lower pressure plate 3 and the lifting mechanism 5 for pre-pressing. This allows the electrode plates 8 to be quickly pressure-held and reinforced after the glue application is completed. It should be noted that an auxiliary support rod is also provided between the horizontal plate 11 and the worktable 1 to increase the support effect.

[0023] The mounting mechanism 4 includes a base plate 41 and a snap-fit ​​plate 42. The base plate 41 is slidably mounted on the horizontal plate 11. A pin 411 is provided on the base plate 41. The snap-fit ​​plate 42 is mounted on the base plate 41. A slot 421 corresponding to the pin 411 is provided on the snap-fit ​​plate 42. The snap-fit ​​plate 42 is also provided with a slot 422 for mounting the electrode plate 8.

[0024] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown; firstly, the electrode plate 8 is installed in the slot 422 to prevent it from moving on the snap-fit ​​plate 42. Then, the slot 421 fixes the snap-fit ​​plate 42 on the base plate 41, allowing it to move with the base plate 41. When the lifting mechanism 5 operates, it lifts the snap-fit ​​plate 42, separating the slot 421 from the pin 411, facilitating the movement of the snap-fit ​​plate 42 and the electrode plate 8 together. This prevents the lower pressure plate 3, the pressure holding mechanism 7, and the lifting mechanism 5 from directly contacting the electrode plate 8, which could damage it. It should be noted that the lower pressure plate 3 has a similar structure to the placement mechanism 4. The lower pressure plate 3 should be equipped with a snap-fit ​​plate 42 and a suction cup structure for connecting the snap-fit ​​plate 42, facilitating the separation and connection of the snap-fit ​​plate 42 and the lower pressure plate 3. This allows the two snap-fit ​​plates 42 to wrap around the two electrode plates 8 respectively, preventing the electrode plates 8 from being directly damaged by pressure.

[0025] A guide groove 111 is provided on the horizontal plate 11, and a guide slider 412 that is slidably connected to the guide groove 111 is provided at the bottom end of the base plate 41. A slide plate 4121 is provided at the bottom end of the guide slider 412. The slide plate 4121 is connected to the guide slider 412 by bolts. The slide plate 4121 abuts against the bottom end of the horizontal plate 11 and is slidably connected to the horizontal plate 11.

[0026] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 10 As shown, the operator connects the slide plate 4121 to the guide slider 412 with bolts to facilitate the installation and removal of the base plate 41. The slide plate 4121 abuts against the bottom end of the horizontal plate 11 to enhance the stability of the base plate 41 and prevent the base plate 41 from detaching from the horizontal plate 11 during movement. The guide groove 111 facilitates the orderly movement of the base plate 41.

[0027] The lifting mechanism 5 includes a push plate 51, a first abutment block 52, a bracket 53, and a second abutment block 54. The push plate 51 is disposed between the base plate 41 and the snap-fit ​​plate 42. An extension block 511 is disposed on the push plate 51 and passes through the base plate 41. The bottom end of the extension block 511 is connected to the first abutment block 52. The bracket 53 is disposed at the bottom end of the workbench 1. A first threaded rod 531 is disposed on the bracket 53 and is threadedly connected to the second abutment block 54. The second abutment block 54 is used to push the first abutment block 52.

[0028] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, during the process of the base plate 41 moving directly below the lower pressure plate 3, the first abutment block 52 located below the base plate 41 will contact the second abutment block 54, causing the second abutment block 54 to push the first abutment block 52, causing the extension block 511 to slide on the base plate 41, thereby causing the push plate 51 to push the snap plate 42 upward, causing the slot 421 on the snap plate 42 to separate from the pin 411. If it is necessary to adjust the rising height of the first abutment block 52, the operator can adjust the height of the second abutment block 54 on the bracket 53 by rotating the first threaded rod 531, thereby increasing the pushing effect of the second abutment block 54 on the first abutment block 52, and thus increasing or decreasing the rising height of the push plate 51.

[0029] The base plate 41 is provided with an opening 413 for the extension block 511 to pass through. The opening 413 is provided with a plurality of evenly distributed limiting grooves 4131. The extension block 511 is provided with a limiting slider 5111 corresponding to the limiting grooves 4131.

[0030] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown; the extension block 511 enables the push plate 51 to move in an orderly manner during the process of pushing the snap plate 42 through the limiting slide groove 4131. At the same time, the limiting slide groove 4131 can also limit the rising height of the push plate 51 to prevent the convex plate from rising too high and affecting the transfer of the snap plate 42 by the conveying mechanism 6. It should be noted that the base plate 41 should be provided with a recess for placing the push plate 51.

[0031] The conveying mechanism 6 includes a pusher block 61, a clamping plate 62, and a gear 63. The pusher plate is attached to the top of the horizontal plate 11. The bottom of the pusher block 61 is higher than the top of the base plate 41. One end of the pusher block 61 is provided with a stop plate 611 for increasing the area of ​​the pusher block 61. The other end of the pusher block 61 is provided with a rack 612 for sliding connection with the conveyor 2. The gear 63 is mounted on the conveyor and meshes with the rack 612. The clamping plate 62 is mounted on the conveyor to fix the gear 63. When the lifting mechanism 5 is working, the top of the pusher plate 51 will be on the same plane as the bottom of the pusher block 61.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the operator rotates gear 63, causing rack 612 to slide at the bottom of horizontal plate 11. At this time, the top of push plate 51 remains parallel to the top of horizontal plate 11 under the action of limiting groove 4131, facilitating the push block 61 to pull the locking plate 42 on push plate 51. This allows the locking block to move along with push block 61 and be transferred to conveyor 2, preventing the locking block from being stuck by bottom plate 41 and affecting the transfer effect. The abutment plate 611 increases the area between push block 61 and locking block, preventing the transmission effect from being affected when processing electrode plates 8 of different thicknesses due to the small connection area between push block 61 and locking block. It should be noted that the locking plate 62 should be equipped with a motor connected to gear 63. The motor is existing technology and is not shown in the figure. Simultaneously, one end of the rear locking plate 62 also abuts against the top of rack 612 to prevent rack 612 from tilting and affecting the transmission effect.

[0033] The pressure holding mechanism 7 includes a housing 72, a pressure plate 73, a second threaded rod 74, and a transmission rod 75. The housing 72 is located outside the transmission machine 2 and covers the output end of the transmission machine 2. The pressure plate 73 is located inside the housing 72. A slide rod 731 is provided at the top of the pressure plate 73. A vent hole 732 is provided on the pressure plate 73. A ball bearing 733 is also provided on the pressure plate 73. The second threaded rod 74 is located at the top of the housing 72. At least two transmission rods 75 are provided. The middle part of the two transmission rods 75 is hinged to each other. The connection between the two transmission rods 75 is used to connect the slide rod 731 and the second threaded rod 74, respectively.

[0034] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, the operator controls the movement of the top ends of the two transmission rods 75 on the threaded rod by rotating the second threaded rod 74. Simultaneously, through leverage, the bottom ends of the two transmission rods 75 push the pressure plate 73 downwards, thus controlling the downward pressure of the pressure plate 73. The sliding rod 731 facilitates sliding with the bottom end of the transmission rod 75. The vent hole 732 allows for air circulation, enabling the heated air to contact the electrode plate 8 and the clamping plate 42, accelerating the curing process of the colloid. The ball bearing 733 is used by the pressure plate 73 to reduce friction between it and the clamping plate 42, facilitating the sliding of the clamping plate 42. The ball bearing 733 can be a roller or similar structure. It should be noted that vent holes 732 are also provided around the clamping block for air permeation, facilitating colloid reinforcement. Multiple second threaded rods 74, sliding rods 731, and second transmission rods 75 are provided, facilitating stable movement of the pressure plate 73.

[0035] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A device for curing and maintaining pressure on bipolar plates of a hydrogen fuel cell, characterized in that, The system includes a workbench (1) and a conveyor (2). The workbench (1) is arranged from top to bottom with a lower pressure plate (3), a placement mechanism (4), and a lifting mechanism (5). The lower pressure plate (3) is slidably mounted on the workbench (1) and is used to pre-press the two electrode plates (8). The placement mechanism (4) is used to install the electrode plates (8). The lifting mechanism (5) is used to adjust the height of the electrode plates (8) in the placement mechanism (4). The conveyor (2) is located on one side of the workbench (1) and is used to transport the electrode plates (8). (2) A conveying mechanism (6) for transferring the electrode plate (8) is also provided between the workbench (1) and the conveyor (2). A pressure holding mechanism (7) is also provided at the top of the conveyor (2). A tunnel (71) for transferring the electrode plate (8) is formed between the pressure holding mechanism (7) and the conveyor. A heating plate is provided inside the tunnel (71). When the two electrode plates (8) are transferred into the tunnel (71), the pressure holding mechanism (7) is used to press against the two electrode plates (8) on the conveyor (2). The heating plate is used to increase the temperature inside the tunnel (71).

2. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 1, characterized in that, A horizontal plate (11) is also provided in the middle part of the workbench (1). One end of the horizontal plate (11) is located outside the workbench (1), and the mounting mechanism (4) is slidably mounted on the horizontal plate (11).

3. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 2, characterized in that, The mounting mechanism (4) includes a base plate (41) and a snap-fit ​​plate (42). The base plate (41) is slidably mounted on a horizontal plate (11). A pin (411) is provided on the base plate (41). The snap-fit ​​plate (42) is mounted on the base plate (41). A slot (421) corresponding to the pin (411) is provided on the snap-fit ​​plate (42). A slot (422) for mounting the electrode plate (8) is also provided on the snap-fit ​​plate (42).

4. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 3, characterized in that, The horizontal plate (11) is provided with a guide groove (111), and the bottom end of the base plate (41) is provided with a guide slider (412) that is slidably connected to the guide groove (111). The bottom end of the guide slider (412) is provided with a slide plate (4121). The slide plate (4121) is connected to the guide slider (412) by bolts. The slide plate (4121) abuts against the bottom end of the horizontal plate (11) and is slidably connected to the horizontal plate (11).

5. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 4, characterized in that, The lifting mechanism (5) includes a push plate (51), a first abutment block (52), a bracket (53), and a second abutment block (54). The push plate (51) is located between the base plate (41) and the snap-fit ​​plate (42). An extension block (511) is provided on the push plate (51) and passes through the base plate (41). The bottom end of the extension block (511) is connected to the first abutment block (52). The bracket (53) is located at the bottom end of the workbench (1). A first threaded rod (531) is provided on the bracket (53) and is threadedly connected to the second abutment block (54). The second abutment block (54) is used to push the first abutment block (52).

6. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 5, characterized in that, The base plate (41) is provided with an opening (413) for the extension block (511) to pass through. The opening (413) is provided with a plurality of evenly distributed limiting grooves (4131). The extension block (511) is provided with a limiting slider (5111) corresponding to the limiting groove (4131).

7. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 6, characterized in that, The conveying mechanism (6) includes a push block (61), a clamping plate (62), and a gear (63). The push plate is attached to the top of the horizontal plate (11). The bottom of the push block (61) is higher than the top of the bottom plate (41). One end of the push block (61) is provided with an abutment plate (611) for increasing the area of ​​the push block (61). The other end of the push block (61) is provided with a rack (612) for sliding connection with the conveyor (2). The gear (63) is set on the conveyor and meshes with the rack (612). The clamping plate (62) is set on the conveyor for fixing the gear (63). When the lifting mechanism (5) is working, the top of the push plate (51) will be on the same plane as the bottom of the push block (61).

8. The hydrogen fuel cell bipolar plate curing and pressure holding device according to claim 7, characterized in that, The pressure holding mechanism (7) includes a housing (72), a pressure plate (73), a second threaded rod (74), and a transmission rod (75). The housing (72) is located on the outside of the conveyor (2) and covers the output end of the conveyor (2). The pressure plate (73) is located inside the housing (72). A slide rod (731) is provided at the top of the pressure plate (73). A vent hole (732) is provided on the pressure plate (73). A ball bearing (733) is also provided on the pressure plate (73). The second threaded rod (74) is located at the top of the housing (72). There are at least two transmission rods (75). The middle part of the two transmission rods (75) is hinged to each other. The connection of the two transmission rods (75) is used to connect the slide rod (731) and the second threaded rod (74), respectively.

Images