A bonding and pressure-maintaining jig for hydrogen fuel cell graphite plates

Abstract

The present invention relates to the technical field of hydrogen fuel cell production equipment, and specifically to a bonding and pressure-maintaining jig for graphite plates of hydrogen fuel cells. It comprises a base and a lower pressure plate, a scissor frame and a plurality of positioning plates are arranged between the base and the lower pressure plate, a lower pressure die capable of placing the graphite plate is arranged on the top of the positioning plate, and an upper pressure die matching the lower pressure die is arranged on the bottom of the positioning plate; by equidistantly arranging a plurality of positioning plates on the scissor frame, a uniform force is applied to the graphite plates during the bonding and pressure-maintaining process. The lower pressure plate drives the positioning plates to move at equal distances through the scissor frame, ensuring uniform clamping pressure of each layer of graphite plates, and avoiding the uneven connection caused by mutual interference or pressure difference when the graphite plates are stacked in the traditional jig. The structural simplification not only reduces the operating cost of the jig, but also reduces the maintenance requirements, so that the jig can meet the needs of batch operations while improving the product qualification rate.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell production equipment, and in particular to a laminating and pressure-maintaining jig for hydrogen fuel cell graphite plates. Background Art

[0002] One of the key components of hydrogen fuel cells is the electrode plate, which mainly performs the dual functions of current collection and supporting the membrane electrode.

[0003] Graphite plates perform outstandingly in electrode plate applications due to their good electrical conductivity, corrosion resistance and structural strength.

[0004] However, the production process of graphite plates is relatively complicated, and they are usually made by gluing and pasting hydrogen plates and air plates.

[0005] In order to meet the needs of batch operations of graphite plates in automated production equipment, Chinese patent CN211017244U discloses a laminating and pressure-maintaining fixture.

[0006] The fixture consists of a material trough, a cover plate and a screw fixing structure. Through the combination of the cover plate and the screws, the stacking and pressing fixation of the graphite plates can be achieved, ensuring uniform fitting during the dispensing process and adapting to the simultaneous processing and baking of multiple graphite plates.

[0007] Although the jig improves the production efficiency and connection reliability of graphite plates to a certain extent, there are still some significant defects in the stacking and feeding process of graphite plates.

[0008] First, the mutual extrusion and friction between the plates can easily cause the graphite plates to affect each other during feeding, which may lead to damage and waste.

[0009] Secondly, the operation of loading materials one by one is not only cumbersome, but also increases the bottleneck of production efficiency, making the overall workflow inefficient.

[0010] Furthermore, during the holding process, bubbles may form on the graphite plate, causing deviations in the applied pressure.

[0011] When multiple graphite plates are stacked, this error is magnified, which in turn affects the pressure-holding effect of adjacent plates and may cause uneven connections or failure. Summary of the invention

[0012] In view of the above problems, a bonding and pressure-maintaining jig for hydrogen fuel cell graphite plates is provided. By equidistantly arranging a plurality of positioning plates on a scissor frame, uniform force is achieved on the graphite plates during the bonding and pressure-maintaining process.

[0013] The lower pressure plate drives the positioning plate to move at equal distances through the scissor frame, ensuring uniform clamping pressure on each layer of graphite plate and avoiding uneven connection caused by mutual interference or pressure difference when graphite plates are stacked in traditional fixtures.

[0014] In order to solve the problems of the prior art, the present invention provides a fitting and pressure-maintaining jig for graphite plates of hydrogen fuel cells, comprising a base and a lower pressure plate arranged above the base and capable of applying pressure to the base along the height direction thereof, a scissors frame and a plurality of positioning plates are arranged between the base and the lower pressure plate, a lower pressure die capable of placing the graphite plate is arranged on the top of the positioning plate, and an upper pressure die matching the lower pressure die is arranged on the bottom of the positioning plate; the plurality of positioning plates are arranged along the height direction of the base, and the positioning plate located at the top in the height direction is fixedly connected to the bottom of the lower pressure plate, and the positioning plate located at the bottom in the height direction is fixedly connected to the top of the base, and an avoidance groove for avoiding the upper pressure die is arranged on the base; the scissors frame comprises a fixing part and a driving part, the fixing part is fixedly connected to the bottom positioning plate, the driving part is fixedly connected to the top positioning plate, and the remaining positioning plates are equidistantly arranged on the scissors frame.

[0015] Preferably, the lower die includes a mounting plate for placing the graphite plate, the mounting plate is provided with a positioning groove matching the graphite plate, and the mounting plate can be slidably arranged on the lower die.

[0016] Preferably, a mounting groove matching the mounting plate is provided in the lower die, first slide rails extending in the horizontal direction are provided on opposite sides of the mounting groove, and sliding rods matching the first slide rails are provided on opposite sides of the mounting plate.

[0017] Preferably, the sliding rod is located on one end of the mounting plate, and a fixing rod extending in a horizontal direction is provided on the end of the mounting plate away from the sliding rod. The fixing rod is used to pull the mounting plate, and a fixing groove is provided at the bottom of the mounting plate near one end of the sliding rod, and a protrusion matching the fixing groove is provided in the mounting groove.

[0018] Preferably, a driving mechanism for synchronously driving the fixed rod is provided on the base, the driving mechanism includes a driving frame that can slide in a horizontal direction, the driving frame is provided with a first sliding groove extending along the height direction of the base, and the fixed rod is provided with a connecting rod extending in the horizontal direction, and the end of the connecting rod can be slidably arranged in the first sliding groove.

[0019] Preferably, the driving mechanism includes a movable frame for synchronously adjusting the angle of the fixed rod, the movable frame can slide in the horizontal direction, the movable frame is provided with a second slide groove that can extend along the height direction of the base, the second slide groove is provided with driving rods that are the same in number and one-to-one with the fixed rod, one end of the driving rod is slidably matched with the second slide groove, and the other end of the driving rod is sleeved on the connecting rod, the driving mechanism also includes a stabilizing frame that can slide in the horizontal direction, and a telescopic rod that can extend in the horizontal direction is provided on multiple positioning plates next to the protrusion, the stabilizing frame is sleeved on one end of the telescopic rod away from the protrusion, and both ends of the stabilizing frame are provided with connecting parts sleeved with the driving rod.

[0020] Preferably, a sleeve and a threaded rod are respectively provided at the bottom of the movable frame and the bottom of the driving frame. The threaded rod is sleeved in the sleeve and threadably matched with the sleeve. A knob for driving the threaded rod to rotate is provided at the end of the threaded rod.

[0021] Preferably, a first magnetic block is provided at the bottom of the mounting plate, and a second magnetic block magnetically connected to the first magnetic block is provided in the mounting groove.

[0022] Preferably, the movable frame includes an upper mounting frame slidably arranged on the lower pressure plate and a lower mounting frame slidably arranged on the base, the upper mounting frame is slidably mounted on the outer side of the lower mounting frame, and the upper mounting frame and the lower mounting frame are provided with relative U-shaped grooves, and the U-shaped grooves of the two constitute a second slide groove.

[0023] Preferably, a plurality of guide pillars in a vertical state are provided on the base, and the lower pressing plate and the plurality of positioning plates can be slidably mounted on the plurality of guide pillars.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention achieves uniform force on the graphite plate during the lamination and pressure-maintaining process by equidistantly arranging a plurality of positioning plates on the scissor frame.

[0026] The lower pressure plate drives the positioning plate to move at equal distances through the scissor frame, ensuring uniform clamping pressure on each layer of graphite plate and avoiding uneven connection caused by mutual interference or pressure difference when graphite plates are stacked in traditional fixtures.

[0027] The structural simplification not only reduces the operating cost of the fixture, but also reduces the maintenance requirements, allowing the fixture to meet the needs of batch operations while improving the product qualification rate.

[0028] 2. The present invention ensures accurate synchronization of the movement of multiple mounting plates through the combined design of the driving frame, the first slide groove and the connecting rod, thereby avoiding the offset and error caused by the independent adjustment of multiple positioning plates.

[0029] At the same time, the layout of the first slide groove and the base in the same height direction ensures that when multiple mounting plates move up and down on the scissor frame, there will be no unnecessary friction due to height differences, thus extending the service life of the equipment.

[0030] The unified control design of the drive mechanism reduces the complexity of individual adjustments, enables quick installation and adjustment, improves work efficiency, and ensures the overall stability of the fixture.

[0031] 3. The present invention uses the threaded rod and the sleeve threaded matching design to enable the moving frame and the driving frame to have a self-locking effect during the fine-tuning process.

[0032] The rotation control of the knob can accurately adjust the lifting angle of the fixing rod, thereby achieving accurate positioning of the mounting plate, ensuring uniform pressure during the graphite plate bonding process, and avoiding positioning deviation caused by sliding loose after adjustment.

[0033] The self-locking feature of the thread not only improves the operating accuracy of the fixture, but also avoids the operational redundancy required for frequent adjustments, simplifies the operating process and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0035] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a mounting plate in an initial state in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0036] Figure 3 The present invention is a schematic diagram of the cross-sectional structure when multiple mounting plates in a hydrogen fuel cell graphite plate bonding and pressure-maintaining fixture are lifted synchronously.

[0037] Figure 4 The present invention is a schematic diagram of the cross-sectional structure when multiple mounting plates in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate slide out synchronously.

[0038] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of a hydrogen fuel cell graphite plate bonding and pressure-maintaining jig when the graphite plate is pressure-maintained.

[0039] Figure 6 The present invention is a three-dimensional structural schematic diagram of a base and a driving mechanism in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0040] Figure 7 The present invention is a three-dimensional structural diagram of a base and a positioning plate in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0041] Figure 8 The present invention is a three-dimensional structural schematic diagram of a lower pressure plate and a positioning plate in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0042] Fig. 9 This is a three-dimensional structure diagram of the mounting plate in the bonding and pressure-maintaining fixture for the graphite plate of a hydrogen fuel cell. Figure 1 .

[0043] Fig.10 This is a three-dimensional structure diagram of the mounting plate in the bonding and pressure-maintaining fixture for the graphite plate of a hydrogen fuel cell. Figure 2 .

[0044] Fig.11 yes Figure 1 Enlarged view of point A in the middle.

[0045] Fig.12 The present invention is a schematic diagram of the three-dimensional structure of a lower pressure plate, a base and multiple positioning plates in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0046] Fig.13 It is a three-dimensional structural schematic diagram of a driving mechanism in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0047] Fig.14 It is a schematic diagram of the three-dimensional structure of a base in a bonding and pressure-maintaining fixture for a hydrogen fuel cell graphite plate.

[0048] The numbers in the figure are:

[0049] 1. Base; 11. Lower pressure plate; 12. Avoidance groove; 13. Scissor frame; 131. Fixed part; 132. Driving part; 14. Driving mechanism; 141. Driving frame; 1411. First slide groove; 1412. Threaded rod; 14121. Knob; 142. Moving frame; 1421. Second slide groove; 1422. Driving rod; 1423. Casing; 1424. Upper mounting frame; 1425. Lower mounting frame; 143. Stable frame; 1 431, telescopic rod; 1432, connecting part; 15, guide column; 2, positioning plate; 21, lower die; 211, mounting plate; 2111, positioning groove; 2112, sliding rod; 2113, fixing rod; 21131, connecting rod; 2114, fixing groove; 2115, first magnetic block; 212, mounting groove; 2121, first slide rail; 2122, bump; 2123, second magnetic block; 22, upper die; 3, graphite plate. DETAILED DESCRIPTION

[0050] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0051] like Figures 1 to 5 , Figure 12 to Figure 14As shown: a bonding and pressure-maintaining fixture for a graphite plate of a hydrogen fuel cell, comprising a base 1 and a lower pressing plate 11 arranged above the base 1 and capable of applying pressure to the base 1 along its height direction, a scissor frame 13 and a plurality of positioning plates 2 are arranged between the base 1 and the lower pressing plate 11, a lower pressing die 21 capable of placing a graphite plate 3 is arranged on the top of the positioning plate 2, and an upper pressing die 22 matching the lower pressing die 21 is arranged on the bottom of the positioning plate 2; the plurality of positioning plates 2 are arranged along the height direction of the base 1, and the positioning plate 2 located at the top in the height direction is fixedly connected to the bottom of the lower pressing plate 11, and the positioning plate 2 located at the bottom in the height direction is fixedly connected to the top of the base 1, and an avoidance groove 12 for avoiding the upper pressing die 22 is arranged on the base 1; the scissor frame 13 comprises a fixing portion 131 and a driving portion 132, the fixing portion 131 is fixedly connected to the bottom positioning plate 2, the driving portion 132 is fixedly connected to the top positioning plate 2, and the remaining positioning plates 2 are equidistantly arranged on the scissor frame 13.

[0052] First, the graphite plate 3 that needs to be pressure-maintained is placed in the lower die 21 on multiple positioning plates 2. When the lower die 11 moves toward the base 1 along the height direction, the lower die 11 can drive the positioning plate 2 fixedly connected to it to move, so that the positioning plate 2 on the lower die 11 can drive the scissors frame 13 to move, and the driving part 132 of the scissors frame 13 will drive multiple positioning plates 2 to move at equal distances relative to the base 1, so that the upper die 22 at the bottom of each positioning plate 2 can cooperate with the lower die 21 on the positioning plate 2 below it to clamp the graphite plate 3 between the two, and because the positioning plates 2 are equidistantly arranged through the scissors frame 13, it can ensure that the pressure on each graphite plate 3 is consistent, thereby achieving uniform fitting.

[0053] The top positioning plate 2 is fixedly connected to the lower pressing plate 11, and the bottom positioning plate 2 is fixedly connected to the base 1 to ensure the stability and force uniformity of the entire fixture, ensuring that all graphite plates 3 are subjected to consistent force during the bonding process, and achieving a high-precision bonding effect.

[0054] Later maintenance and adjustment are more convenient, and the fixture operation cost is relatively reduced.

[0055] Multiple positioning plates 2 are arranged in sequence along the height direction, which facilitates the simultaneous bonding and pressure maintenance of multiple graphite plates 3 in the same fixture, eliminating the tedious steps of operating each piece one by one, significantly improving production efficiency and reducing labor and time costs.

[0056] Since the positioning plates 2 are equidistantly arranged on the scissor frame 13 and move independently, each layer of graphite plate 3 will not be affected by other graphite plates 3 during the pressing process.

[0057] This independent force-bearing design can effectively prevent the phenomenon of uneven fitting due to bubbles or deformation on the graphite plate 3 caused by mutual interference, further improving the qualification rate and consistency of the product.

[0058] like Figures 1 to 8 and Fig.10 As shown: the lower die 21 includes a mounting plate 211 for placing the graphite plate 3, and the mounting plate 211 is provided with a positioning groove 2111 that matches the graphite plate 3, and the mounting plate 211 can be slidably arranged on the lower die 21.

[0059] By setting the sliding mounting plate 211 , the user can easily pull out the mounting plate 211 to place or replace the graphite plate 3 .

[0060] This convenient operation method significantly reduces the time for clamping and disassembly, and improves work efficiency, which is especially important when the production line needs to change molds frequently.

[0061] The positioning groove 2111 provided on the mounting plate 211 matches the graphite plate 3 , which can ensure the stability and accuracy of the graphite plate 3 during the placement process.

[0062] The design of the positioning groove 2111 can effectively prevent the graphite plate 3 from shifting during the bonding process, thereby improving the bonding accuracy and consistency and ensuring the quality of the final product.

[0063] The sliding design of the mounting plate 211 makes the routine maintenance and mold replacement process simple and efficient.

[0064] Users can complete the operation quickly without complicated tools or additional auxiliary fixtures, reducing the risk of fixture damage due to improper operation, while also reducing fixture downtime and optimizing the production process.

[0065] By adjusting the size of the positioning groove 2111 on the mounting plate 211 or by replacing the adjustment mounting plate 211 with positioning grooves 2111 of different sizes, it is possible to flexibly adapt to graphite plates 3 of different specifications, so that the fixture has higher versatility and adaptability.

[0066] This design improves the applicability of the fixture to handle diverse production needs.

[0067] The simplified placement and replacement method effectively reduces the labor intensity of operators.

[0068] like Figures 2 to 10As shown: a mounting groove 212 matching the mounting plate 211 is provided in the lower die 21, first slide rails 2121 extending in the horizontal direction are provided on opposite sides of the mounting groove 212, and sliding rods 2112 matching the first slide rails 2121 are provided on opposite sides of the mounting plate 211.

[0069] The first slide rail 2121 cooperates with the slide rod 2112 on the mounting plate 211 to form a good guiding mechanism, so that the mounting plate 211 moves more smoothly and stably.

[0070] This design improves the convenience of operation, reduces friction and resistance when placing and replacing the graphite plate 3, and improves the user experience.

[0071] At the same time, the mounting plate 211 can be limited to prevent it from falling off from the lower die 21 during the sliding process.

[0072] The provision of the first slide rail 2121 can accurately position the mounting plate 211, which helps to improve the stability of the lamination process and avoid the problem of uneven lamination caused by position deviation.

[0073] The arrangement of the first slide rail 2121 and the slide rod 2112 can reduce friction and wear and extend the service life of the fixture.

[0074] Compared to other designs that may generate excessive friction, this structure can better protect key components, reduce the frequency of repairs and replacements, and reduce maintenance costs.

[0075] like Figures 2 to 10 As shown: the sliding rod 2112 is located on one end of the mounting plate 211, and a fixing rod 2113 extending in the horizontal direction is provided on the end of the mounting plate 211 away from the sliding rod 2112. The fixing rod 2113 is used to pull the mounting plate 211, and a fixing groove 2114 is provided at the bottom of the mounting plate 211 near one end of the sliding rod 2112, and a protrusion 2122 matching the fixing groove 2114 is provided in the mounting groove 212.

[0076] By pulling the mounting plate 211 through the fixing rod 2113, the mounting plate 211 can slide in the first slide rail 2121 through the sliding rod 2112. By rotating the mounting plate 211 about the axis of the sliding rod 2112, the mounting plate 211 is lifted to a certain height to avoid the protrusion 2122. When the mounting plate 211 slides to the edge of the first slide rail 2121, the fixing groove 2114 at the bottom of the mounting plate 211 can be stuck on the protrusion 2122 on the mounting groove 212, thereby positioning the mounting plate 211. This design not only simplifies the fixing steps of the mounting plate 211, but also helps to make the subsequent placement process of the graphite plate 3 more stable and reliable, and avoids sliding or offsetting.

[0077] The design of the fixing rod 2113 makes it easy for the operator to complete the pulling and fixing process with one hand, simplifies the process of placing the graphite plate 3, and improves the clamping efficiency.

[0078] Especially in the case where the graphite plate 3 needs to be replaced quickly, the fixing mechanism can significantly shorten the operation time.

[0079] After the mounting plate 211 is locked by the fixing groove 2114 and the protrusion 2122 , the mounting plate 211 can be effectively prevented from accidentally sliding, thereby improving the safety during operation.

[0080] This stable fixing method not only protects the graphite plate 3 and the fixture components, but also reduces the risk of damage to the graphite plate 3 due to accidental sliding.

[0081] like Figures 2 to 6 , Figures 11 to 13 As shown: a driving mechanism 14 for synchronously driving a fixed rod 2113 is provided on the base 1, the driving mechanism 14 includes a driving frame 141 which can slide in a horizontal direction, the driving frame 141 is provided with a first slide groove 1411 extending in a height direction of the base 1, and a connecting rod 21131 extending in a horizontal direction is provided on the fixed rod 2113, and the end of the connecting rod 21131 can be slidably arranged in the first slide groove 1411.

[0082] As the lower pressing plate 11 moves, the scissor frame 13 drives the height of the plurality of positioning plates 2 to change, so that the position of the fixing rod 2113 of the mounting plate 211 changes accordingly.

[0083] By driving the frame 141 to slide in the horizontal direction, the first slide groove 1411 can synchronously drive the plurality of connecting rods 21131 to move, thereby driving the fixing rods 2113 and the mounting plate 211 to slide in the lower die 21 .

[0084] In addition, the first slide groove 1411 is arranged along the height direction of the base 1, so that when the positioning plate 2 moves on the scissor frame 13, the fixed rod 2113 and the first slide groove 1411 maintain sliding cooperation, which does not affect the synchronous driving of the scissor frame 13 on the positioning plate 2.

[0085] By providing the driving frame 141 and the first sliding groove 1411 , the synchronous movement of the plurality of fixing rods 2113 can be achieved, thereby ensuring that accurate positioning can be achieved on the plurality of mounting plates 211 .

[0086] Effectively avoid deviation or error caused by manual adjustment, thereby improving the working efficiency of the fixture.

[0087] Through the unified control of the driving mechanism 14, the need for independent adjustment of each fixing rod 2113 is reduced, the operation is simplified, and the structure is stable.

[0088] The first slide groove 1411 extends along the height direction of the base 1, so that the sliding of the driving frame 141 can adapt to the height changes of different positioning plates 2, ensuring that the fixed rod 2113 follows synchronously during the movement of the scissor frame 13 without affecting the independent movement and accurate positioning of multiple positioning plates 2.

[0089] The sliding design of the drive frame 141 effectively avoids frequent friction of the fixing rod 2113 caused by the height difference of the positioning plate 2, reduces the wear of key components, and helps to extend the service life and maintenance cycle of the fixture.

[0090] like Figures 2 to 6 , Figures 11 to 13 As shown: the driving mechanism 14 includes a movable frame 142 for synchronously adjusting the angle of the fixed rod 2113, the movable frame 142 can slide in the horizontal direction, the movable frame 142 is provided with a second slide groove 1421 that can extend along the height direction of the base 1, the second slide groove 1421 is provided with a driving rod 1422 of the same number and one-to-one corresponding to the fixed rod 2113, one end of the driving rod 1422 is slidably matched with the second slide groove 1421, and the other end of the driving rod 1422 is sleeved on the connecting rod 21131. The driving mechanism 14 also includes a stabilizing frame 143 that can slide in the horizontal direction, and a telescopic rod 1431 that can extend in the horizontal direction is provided on the side of the protrusion 2122 on the multiple positioning plates 2. The stabilizing frame 143 is sleeved on one end of the telescopic rod 1431 away from the protrusion 2122, and the two ends of the stabilizing frame 143 are provided with connecting parts 1432 sleeved with the driving rod 1422.

[0091] Due to the setting of the protrusion 2122, when the driving frame 141 drives the multiple fixing rods 2113 to move, there will be a problem of interference between the mounting plate 211 and the protrusion 2122, which will affect the obstacle to the synchronous driving of the mounting plate 211, and it is necessary to synchronously lift the mounting plate 211 so that the mounting plate 211 can avoid the position of the protrusion 2122. Through the setting of the stabilizing frame 143, the driving rod 1422 can move with the positioning plate 2, which is convenient for the movable frame 142 and the driving frame 141 to adjust the angle of the fixing rod 2113. When the angle of the fixing rod 2113 needs to be adjusted, since the mounting plate 211 is located in the mounting groove 212, the end of the mounting plate 211 abuts against the mounting groove 212, so that the driving frame 141 can be pushed to the movable frame 142 approaches, at this time, the approach of the movable frame 142 will drive the driving rod 1422 to tilt, so that the driving rod 1422 rotates around the hinge point of the connection part 1432 with the stabilizing frame 143, and then the tilting of the driving rod 1422 will pull the connecting rod 21131 to slide along the first sliding groove 1411, thereby driving the movement of the fixing rod 2113 through the connecting rod 21131, so that the fixing rod 2113 is lifted, thereby avoiding the height of the protrusion 2122, and at this time, the movable frame 142 and the driving frame 141 are pulled at the same time, so that the mounting plate 211 can be pulled out from the mounting groove 212 in a tilted state, until the driving frame 141 is released, so that the fixing rod 2113 is in a parallel state, and at this time the mounting plate 211 can be stuck on the protrusion 2122 to complete the positioning.

[0092] It should be noted that the driving rod 1422 is in an inclined state in the initial state, so that when the driving frame 141 approaches the moving frame 142, the driving rod 1422 can be driven better to avoid being stuck.

[0093] The arrangement of the telescopic rod 1431 and the stabilizing frame 143 makes the structure of the fixture more compact and makes rational use of space.

[0094] Through the combination of the driving frame 141, the moving frame 142 and the stabilizing frame 143, the mounting plate 211 can effectively avoid the position of the protrusion 2122 during the movement process, avoiding malfunction or jamming due to interference, thereby ensuring the stability and consistency of the driving process.

[0095] The coordinated effect of the stabilizing frame 143, the driving rod 1422 and the connecting rod 21131 realizes the precise synchronous adjustment of the angle of the fixing rod 2113, ensures the precise position of each mounting plate 211 during placement and movement, and greatly improves the operating accuracy of the fixture.

[0096] The sliding fit design of the stabilizer frame 143 reduces the friction of the connecting rod 21131 in the slide groove, thereby extending the service life of key components and reducing the burden of fixture maintenance.

[0097] The linkage design of the stabilizing frame 143, the driving frame 141 and the moving frame 142 here effectively reduces the need for independent adjustment of each component during the adjustment process, simplifies the operation process, makes the fixture easier to use, and reduces the dependence on manual operation.

[0098] It not only ensures the smooth movement of the mounting plate 211 at different heights, but also can adapt to a variety of installation scenarios, ensures the accurate positioning of the graphite plate 3 during the efficient installation process, and helps to improve the overall efficiency of the fixture.

[0099] like Figures 2 to 6 , Figures 11 to 13 As shown: the bottom of the moving frame 142 and the bottom of the driving frame 141 are respectively provided with a sleeve 1423 and a threaded rod 1412, the threaded rod 1412 is sleeved in the sleeve 1423 and threadedly matched therewith, and the end of the threaded rod 1412 is provided with a knob 14121 for driving it to rotate.

[0100] Through the threaded cooperation between the threaded rod 1412 and the sleeve 1423 , the moving frame 142 and the driving frame 141 can be precisely fine-tuned by rotating the knob 14121 .

[0101] This design allows the operator to flexibly control the lifting angle of the fixing rod 2113 by rotating the knob 14121, thereby achieving precise positioning of the mounting plate 211 and ensuring uniform pressure during the bonding process of the graphite plate 3.

[0102] The threaded connection provides a firm fixation effect, avoiding slippage or loosening, thus ensuring the operational stability of the entire fixture.

[0103] Even after multiple operations, the position stability can be maintained, extending the service life of the fixture.

[0104] The design of the threaded rod 1412 makes the position adjustment have a self-locking feature and will not automatically slide in the opposite direction after adjustment. At the same time, the inclined mounting plate 211 can be moved by pulling any one of the movable frame 142 and the driving frame 141, which is convenient for operation. There is no need to move the movable frame 142 and the driving frame 141 at the same time after adjusting the distance between them, and it is also necessary to maintain the distance between the two, which simplifies the operation.

[0105] like Figures 2 to 4 , Figure 7 and Fig. 9 As shown, a first magnetic block 2115 is disposed at the bottom of the mounting plate 211 , and a second magnetic block 2123 magnetically connected to the first magnetic block 2115 is disposed in the mounting groove 212 .

[0106] The first magnetic block 2115 is magnetically connected to the second magnetic block 2123 in the mounting groove 212 , so that the mounting plate 211 can be installed and removed more quickly without the need for additional fastening tools.

[0107] Magnetic adsorption provides an intuitive docking method for operators, facilitates the rapid replacement of the graphite plate 3, and improves the operating efficiency of the fixture.

[0108] The adsorption force between the magnetic blocks has an automatic alignment effect, so that the mounting plate 211 can be automatically aligned and adsorbed and fixed when approaching the mounting groove 212, reducing the alignment and fixing operation steps and ensuring high precision and stability during the bonding process of the graphite plate 3.

[0109] The connection method of the magnetic block does not require regular tightening and loosening, reducing the maintenance frequency and difficulty of the fixture.

[0110] At the same time, the magnetic blocks are relatively durable, and there is no need for hard contact and friction between the magnetic blocks, which reduces the wear of the connectors due to frequent disassembly and assembly. They have a long service life and are not prone to wear, reducing subsequent maintenance costs.

[0111] like Fig.11 and Fig.13 As shown: the movable frame 142 includes an upper mounting frame 1424 slidably arranged on the lower pressure plate 11 and a lower mounting frame 1425 slidably arranged on the base 1, the upper mounting frame 1424 is slidably mounted on the outer side of the lower mounting frame 1425, and the upper mounting frame 1424 and the lower mounting frame 1425 are provided with relative U-shaped grooves, and the U-shaped grooves of the two constitute a second slide groove 1421.

[0112] The structural design of the upper mounting frame 1424 being sleeved in the lower mounting frame 1425 makes the overall structure of the movable frame 142 more stable, reduces shaking and deviation during sliding, ensures the stability and accuracy of operation, and helps to achieve a uniform pressure effect during the bonding process of the graphite plate 3.

[0113] At the same time, when the lower pressing plate 11 is moved closer to the base 1, the movable frame 142 can be retracted to reduce the space occupied, making it easier to place the graphite plate 3 in the oven later.

[0114] The U-shaped grooves respectively provided on the upper mounting frame 1424 and the lower mounting frame 1425 provide a smooth sliding path for the driving rod 1422, reduce the resistance during the sliding process, make the driving adjustment smoother, and improve the working efficiency of the fixture.

[0115] The double-layer frame structure and the relative U-shaped groove design facilitate the assembly and disassembly operations of the fixture, facilitate quick replacement or adjustment of the position of the second slide groove 1421, simplify the daily maintenance and debugging of the fixture, and improve the convenience of use.

[0116] like Figures 1 to 5 As shown, a plurality of vertical guide pillars 15 are arranged on the base 1 , and the lower pressing plate 11 and the plurality of positioning plates 2 can be slidably mounted on the plurality of guide pillars 15 .

[0117] The sliding cooperation between the guide pillar 15 and the lower pressing plate 11 and the positioning plate 2 ensures that the pressure applied to the graphite plate 3 is evenly distributed, avoiding deformation or damage of the plate due to uneven pressure, thereby improving product quality.

[0118] The provision of the guide pillars 15 makes the sliding between the lower pressing plate 11 and the positioning plate 2 smoother, thereby reducing the friction resistance.

[0119] The parallel arrangement of multiple guide pillars 15 provides better support, so that the lower pressing plate 11 and the positioning plate 2 remain stable during operation, reducing accidental displacement due to instability, and helping to maintain the reliability of the entire fixture.

[0120] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the present invention.

[0121] It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all fall within the protection scope of the present invention.

[0122] Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A laminating and pressure-maintaining jig for a hydrogen fuel cell graphite plate, comprising a base (1) and a lower pressing plate (11) disposed above the base (1) and capable of applying pressure to the base (1) along a height direction thereof, characterized in that: A scissor frame (13) and a plurality of positioning plates (2) are arranged between the base (1) and the lower pressing plate (11); a lower pressing die (21) capable of placing the graphite plate (3) is arranged on the top of the positioning plate (2); and an upper pressing die (22) matching the lower pressing die (21) is arranged on the bottom of the positioning plate (2); A plurality of positioning plates (2) are arranged along the height direction of the base (1), and the positioning plate (2) located at the top in the height direction is fixedly connected to the bottom of the lower pressing plate (11), and the positioning plate (2) located at the bottom in the height direction is fixedly connected to the top of the base (1), and an avoidance groove (12) for avoiding the upper pressing die (22) is provided on the base (1); The scissor frame (13) comprises a fixing portion (131) and a driving portion (132), wherein the fixing portion (131) is fixedly connected to the bottommost positioning plate (2), and the driving portion (132) is fixedly connected to the topmost positioning plate (2), and the remaining positioning plates (2) are arranged at equal distances on the scissor frame (13); The lower die (21) includes a mounting plate (211) for placing the graphite plate (3); The lower die (21) is provided with a mounting groove (212) matching the mounting plate (211), first slide rails (2121) extending in a horizontal direction are provided on opposite sides of the mounting groove (212), and sliding rods (2112) matching the first slide rails (2121) are provided on opposite sides of the mounting plate (211); The sliding rod (2112) is located on one end of the mounting plate (211); a fixing rod (2113) extending in the horizontal direction is provided on the end of the mounting plate (211) away from the sliding rod (2112); the fixing rod (2113) is used to pull the mounting plate (211); a fixing groove (2114) is provided at one end of the bottom of the mounting plate (211) close to the sliding rod (2112); a protrusion (2122) matching the fixing groove (2114) is provided in the mounting groove (212); A driving mechanism (14) for synchronously driving the fixed rod (2113) is provided on the base (1), the driving mechanism (14) comprising a driving frame (141) capable of sliding in a horizontal direction, the driving frame (141) being provided with a first slide groove (1411) extending in a height direction of the base (1), the fixed rod (2113) being provided with a connecting rod (21131) extending in a horizontal direction, the end of the connecting rod (21131) being slidably disposed in the first slide groove (1411); The driving mechanism (14) comprises a movable frame (142) for synchronously adjusting the angle of the fixed rod (2113); the movable frame (142) can slide in a horizontal direction; a second slide groove (1421) is provided on the movable frame (142) and can extend in a height direction of the base (1); the second slide groove (1421) is provided with driving rods (1422) of the same number as the fixed rod (2113) and corresponding to each other in a one-to-one manner; one end of the driving rod (1422) is slidably matched with the second slide groove (1421); and the driving rod (1422) is provided with a plurality of driving rods (1422) which are arranged on the second slide groove (1421). The other end of the cam (1422) is sleeved on the connecting rod (21131), and the driving mechanism (14) further comprises a stabilizing frame (143) capable of sliding in the horizontal direction. A telescopic rod (1431) capable of extending in the horizontal direction is arranged on the side of the protrusion (2122) on the plurality of positioning plates (2). The stabilizing frame (143) is sleeved on one end of the telescopic rod (1431) away from the protrusion (2122), and connecting portions (1432) sleeved with the driving rod (1422) are arranged at both ends of the stabilizing frame (143).

2. The laminating and pressure-maintaining jig for hydrogen fuel cell graphite plates according to claim 1, characterized in that: The mounting plate (211) is provided with a positioning groove (2111) that matches the graphite plate (3), and the mounting plate (211) is slidably arranged on the lower pressing die (21).

3. The laminating and pressure-maintaining jig for hydrogen fuel cell graphite plates according to claim 2, characterized in that: The bottom of the moving frame (142) and the bottom of the driving frame (141) are respectively provided with a sleeve (1423) and a threaded rod (1412); the threaded rod (1412) is sleeved in the sleeve (1423) and threadably matched therewith; and a knob (14121) for driving the threaded rod (1412) to rotate is provided at the end of the threaded rod (1412).

4. The laminating and pressure-maintaining jig for hydrogen fuel cell graphite plates according to claim 1, characterized in that: A first magnetic block (2115) is arranged at the bottom of the mounting plate (211), and a second magnetic block (2123) magnetically connected to the first magnetic block (2115) is arranged in the mounting groove (212).

5. The laminating and pressure-maintaining jig for hydrogen fuel cell graphite plates according to claim 1, characterized in that: The movable frame (142) comprises an upper mounting frame (1424) slidably arranged on the lower pressure plate (11) and a lower mounting frame (1425) slidably arranged on the base (1); the upper mounting frame (1424) is slidably mounted on the outer side of the lower mounting frame (1425); the upper mounting frame (1424) and the lower mounting frame (1425) are provided with opposite U-shaped grooves, and the U-shaped grooves of the two constitute a second slide groove (1421).

6. A hydrogen fuel cell graphite plate bonding and pressure-maintaining jig according to any one of claims 1 to 5, characterized in that: A plurality of guide pillars (15) in a vertical state are arranged on the base (1), and the lower pressing plate (11) and the plurality of positioning plates (2) are slidably sleeved on the plurality of guide pillars (15).

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