Stamping device for processing bipolar plate of fuel cell

Abstract

The invention relates to the technical field of fuel cell processing, and discloses a stamping device for fuel cell bipolar plate processing, which comprises a box body, the top of the box body is fixedly connected with a support frame, the support frame is internally and fixedly connected with a penetrating electric rod, the output end of the electric rod is fixedly connected with a moving seat, and the bottom of the moving seat is fixedly connected with a runner stamping molding plate. The top of the box body is also fixedly connected with a stamping seat corresponding to the runner stamping shaping plate; the linkage type auxiliary demolding mechanism comprises a support penetrating through the two sides of the top of the box body, an abutting block is movably installed on the inner side of the top of the support, and an adjusting assembly for adjusting the height of the abutting block is arranged in the support. A support abutting block of the linkage type auxiliary demolding mechanism is in linkage with a movable base to drive a supporting rod and a demolding plate to move, a reset spring and a limiting base are matched, the bipolar plate is automatically supported out, scratching deformation caused by manual stripping is avoided, the problem that adhesion is difficult to take pieces is solved, the double-face punching positioning precision is guaranteed, and the reliability and efficiency of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of fuel cell processing technology, specifically to a stamping device for processing fuel cell bipolar plates. Background Technology

[0002] As one of the core components of a fuel cell, the forming accuracy of the surface flow channels of the bipolar plate directly affects the reaction efficiency and service life of the fuel cell. Stamping has become one of the mainstream processes for processing the flow channels of fuel cell bipolar plates due to its advantages of high forming efficiency and low cost.

[0003] When using a stamping device to process the flow channel of a fuel cell bipolar plate, the flow channel needs to be shaped by the cooperation of the stamping seat and the flow channel stamping forming plate. After processing, due to the low rigidity of the thin bipolar plate itself, and the adsorption force between the plate and the surface of the stamping seat during the stamping process, the bipolar plate is very likely to stick to the stamping seat.

[0004] Currently used stamping devices rely heavily on manual peeling to address this adhesion problem. This not only increases the labor intensity of operators and reduces batch processing efficiency, but also easily causes scratches or edge deformation on the bipolar plate surface during the peeling process, affecting the processing quality of the bipolar plate and the subsequent assembly accuracy. This makes it difficult to meet the large-scale, high-precision processing requirements of fuel cell bipolar plates. Therefore, it is urgent to develop a stamping device for processing fuel cell bipolar plates to solve these practical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a stamping device for processing fuel cell bipolar plates, solving the technical problem that the plates easily stick to the stamping seat during the stamping process of fuel cell bipolar plates, and manual peeling affects quality and efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a stamping device for processing bipolar plates of fuel cells, comprising a housing, a support frame fixedly connected to the top of the housing, a through electric rod fixedly connected inside the support frame, a movable seat fixedly connected to the output end of the electric rod, a flow channel stamping and shaping plate fixedly connected to the bottom of the movable seat, and a stamping seat corresponding to the flow channel stamping and shaping plate fixedly connected to the top of the housing.

[0007] It also includes a linkage-type auxiliary demolding mechanism, which includes a bracket that runs through both sides of the top of the box. An abutment block is movably installed on the inner side of the top of the bracket. The bracket is equipped with an adjustment component that adjusts the height of the abutment block. A support rod that runs through the box and extends into the stamping seat is fixedly connected to the top center of the bracket inside the box. A demolding template that is embedded in the top of the stamping seat is fixedly connected to the top of the support rod. A return spring that is fixedly connected to the top of the box is sleeved on the outside of the support rod for elastic return of the support rod.

[0008] Preferably, the top of the support frame is provided with a guide assembly for limiting the movement of the movable seat. The guide assembly includes multiple sets of guide seats that are equidistantly installed on the top of the support frame. A limit rod is movably installed inside the guide seat. The bottom end of the limit rod is fixedly connected to the top of the movable seat to guide and limit the movement trajectory of the movable seat.

[0009] Preferably, the adjustment component includes movable grooves on both sides of the top of the bracket, the movable grooves being slidably adapted to one end of the abutment block, and a locking member extending into the interior of the abutment block being threadedly installed on one side of the movable groove for limiting and fixing the moving position of the abutment block.

[0010] Preferably, a scale plate is fixedly connected to the front of the bracket, and the scale plate is correspondingly set with the abutment block to assist in observing the adjustment height of the abutment block.

[0011] Preferably, the linkage-type auxiliary demolding mechanism further includes a mounting frame disposed between the two supports, and a limiting seat for limiting the movement position of the supports is fixedly connected to the center of the mounting frame.

[0012] Preferably, it also includes an adaptive pressure holding auxiliary mechanism, which includes multiple sets of housings fixed to the top of the movable seat, with abutment springs fixed inside the housings, abutment rods penetrating the interior of the movable seat fixed to the bottom end of the abutment springs, and rubber heads fixed to the bottom end of the abutment rods, for elastically pressing and limiting the bipolar plates of the fuel cell during stamping.

[0013] Preferably, there are at least four sets of housings, and the housings are radially equidistant from the center line of the top of the movable seat.

[0014] Preferably, an extension plate is fixed to one side of the housing for placing and retrieving the bipolar plates.

[0015] Preferably, the stripper template is rectangular in shape, and the top of the stripper template is flush with the stamping surface of the stamping seat.

[0016] This invention provides a stamping apparatus for processing bipolar plates for fuel cells. Compared with the prior art, it has the following advantages:

[0017] 1. The linkage-type auxiliary demolding mechanism uses a top contact block of the support and a moving seat to precisely move the internal support rod and the top demolding platen synchronously. With the elastic energy storage and reset function of the return spring on the outside of the support rod, and the limit seat inside the mounting frame restricting the movement trajectory of the support, the stamped bipolar plate can be automatically and smoothly lifted out of the stamping seat. This completely avoids the problem of scratching the surface of the plate or causing deformation of the plate during manual peeling, solves the pain point of the difficulty in removing the thin bipolar plate after stamping due to adhesion, ensures smooth and stable demolding action, and at the same time ensures the positioning accuracy of subsequent double-sided stamping, improving the long-term operational reliability and batch processing efficiency of the device.

[0018] 2. The internal contact spring of the adaptive holding auxiliary mechanism drives the contact rod and the bottom rubber head to move down synchronously with the moving seat. The rubber head contacts the bipolar plate before the flow channel stamping and shaping plate and achieves pre-limiting. During the stamping process, the contact spring adaptively compresses and buffers, always providing uniform elastic holding force to the bipolar plate, effectively avoiding edge warping or positional displacement of thin bipolar plates due to stamping pressure, preventing the flow channel forming from being skewed or uneven in depth, ensuring stable flow channel forming quality. At the same time, the rubber head can avoid damaging the surface of the electrode plate, significantly improving the bipolar plate processing qualification rate, and does not interfere with the normal operation of flow channel stamping and shaping. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front appearance structure of the present invention;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This is a schematic diagram showing the installation positions of the linkage-type auxiliary demolding mechanism and the adaptive pressing auxiliary mechanism of the present invention;

[0022] Figure 4 This is a partial schematic diagram of the adaptive pressure-holding auxiliary mechanism of the present invention;

[0023] Figure 5 This is a partial schematic diagram of the linkage-assisted demolding mechanism of the present invention.

[0024] In the diagram: 1. Box body; 101. Support frame; 102. Electric rod; 1021. Guide seat; 1022. Limiting rod; 103. Moving seat; 1031. Flow channel stamping molding plate; 104. Stamping seat; 2. Linkage auxiliary demolding mechanism; 201. Bracket; 202. Adjustment component; 2021. Moving groove; 2022. Locking component; 2023. Scale plate; 203. Abutting block; 204. Support rod; 205. Demolding plate; 206. Return spring; 207. Mounting bracket; 2071. Limiting seat; 3. Adaptive pressure holding auxiliary mechanism; 301. Housing; 302. Abutting spring; 303. Abutting rod; 304. Rubber head; 4. Extension plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] First implementation method:

[0027] refer to Figure 1-3 , Figure 5 A stamping device for processing bipolar plates of fuel cells includes a housing 1, a support frame 101 fixedly connected to the top of the housing 1, an electric rod 102 fixedly connected inside the support frame 101, a movable seat 103 fixedly connected to the output end of the electric rod 102, a flow channel stamping and shaping plate 1031 fixedly connected to the bottom of the movable seat 103, and a stamping seat 104 corresponding to the flow channel stamping and shaping plate 1031 fixedly connected to the top of the housing 1.

[0028] It also includes a linkage-type auxiliary demolding mechanism 2, which includes a bracket 201 that runs through both sides of the top of the box 1. An abutment block 203 is movably installed on the inner side of the top of the bracket 201. An adjustment component 202 for adjusting the height of the abutment block 203 is provided inside the bracket 201. A support rod 204 that runs through the box 1 and extends into the stamping seat 104 is fixedly connected to the top center of the bracket 201 inside the box 1. A demolding template 205 that is embedded in the top of the stamping seat 104 is fixedly connected to the top of the support rod 204. A return spring 206 that is fixedly connected to the top of the box 1 is sleeved on the outside of the support rod 204 for elastic reset of the support rod 204.

[0029] The top of the support frame 101 is provided with guide components for limiting the movement of the movable seat 103. The guide components include multiple guide seats 1021 that are equidistantly installed on the top of the support frame 101. Limiting rods 1022 are movably installed inside the guide seats 1021. The bottom end of the limiting rods 1022 is fixedly connected to the top of the movable seat 103 to guide and limit the movement trajectory of the movable seat 103.

[0030] The adjustment component 202 includes a movable groove 2021 opened on both sides of the top of the bracket 201. The movable groove 2021 is slidably adapted to one end of the abutment block 203. A locking member 2022 extending into the interior of the abutment block 203 is threadedly installed on one side of the movable groove 2021 for limiting and fixing the moving position of the abutment block 203.

[0031] The linkage-type auxiliary demolding mechanism 2 also includes a mounting frame 207 disposed between the two supports 201, and a limiting seat 2071 for limiting the movement position of the supports 201 is fixedly connected to the center of the mounting frame 207.

[0032] An extension plate 4 is fixed to one side of the housing 1 to provide for the placement and retrieval of bipolar plates;

[0033] The stripper 205 is rectangular in shape, and the top of the stripper 205 is flush with the stamping surface of the stamping seat 104.

[0034] Working principle: After the operator places the fuel cell bipolar plate to be processed on the top of the stamping seat 104, the electric rod 102 drives the moving seat 103 to move down. The moving seat 103 drives the limiting rod 1022 to move inside the guide seat 1021, thereby guiding the movement of the moving seat 103. This allows the moving seat 103 to move the flow channel stamping and shaping plate 1031 precisely to fit against the top of the stamping seat 104. Then, the flow channel stamping and shaping plate 1031 performs flow channel stamping and shaping on the top of the bipolar plate, forming the required flow channel structure on the surface of the bipolar plate, thus realizing the stamping function.

[0035] After the stamping operation is completed, the electric rod 102 drives the moving seat 103 to move upward. The top of both sides of the moving seat 103 abuts against one side of the abutment block 203, which in turn drives the bracket 201 to move upward through the abutment block 203. The moving bracket 201 drives the support rod 204 to move upward synchronously. At the same time, the moving support rod 204 compresses the return spring 206 to store energy.

[0036] The upward-moving support rod 204 can drive the demolding template 205 to move out of the stamping seat 104, thereby demolding the stamped fuel cell bipolar plate inside the stamping seat 104, so that the stamped bipolar plate is separated from the stamping seat 104, making it easy for the operator to take it out from the extension plate 4.

[0037] When the electric rod 102 runs again and drives the moving seat 103 to move down, the resistance force of the moving seat 103 on the abutment block 203 disappears. The return spring 206 releases its stored energy and drives the support rod 204 and the template 205 to move down and reset. After the top of the template 205 is flush with the stamping surface of the stamping seat 104, the bipolar plate with the flow channel stamped on one side can be flipped and placed back into the inside of the stamping seat 104 for the flow channel stamping on the other side, thereby completing the complete processing of the fuel cell bipolar plate.

[0038] The automatic demolding function of the bipolar plate after stamping is realized by the linkage auxiliary demolding mechanism 2, which avoids the problem of easily scratching the surface of the plate when manually peeling off the bipolar plate. It also solves the technical problem of the thin bipolar plate sticking to the stamping seat 104 after stamping and making it difficult to remove the part, which is easy to promote.

[0039] The mounting bracket 207 provides a stable mounting position for the limiting seat 2071. The limiting seat 2071 can limit the movement trajectory of the bracket 201 that moves vertically, thereby ensuring the stability of the movement of the bracket 201 and preventing the bracket 201 from shifting and causing unsmooth demolding.

[0040] Second implementation method:

[0041] In actual use of the device, the thinness of the fuel cell bipolar plates to be processed makes them prone to edge warping or positional displacement due to the pressure during stamping, resulting in low flow channel forming accuracy. To address this issue, the device is also equipped with an adaptive pressure holding auxiliary mechanism, the specific structure and working principle of which are as follows:

[0042] refer to Figure 3-4 In a second embodiment of the present invention, an adaptive pressing auxiliary mechanism 3 is also included, which includes multiple sets of housings 301 fixed to the top of the movable seat 103. An abutment spring 302 is fixed inside the housing 301. An abutment rod 303 penetrating inside the movable seat 103 is fixed to the bottom end of the abutment spring 302. A rubber head 304 is fixed to the bottom end of the abutment rod 303 for elastically pressing and limiting the bipolar plate of the fuel cell during stamping.

[0043] There are at least four sets of housings 301, and the housings 301 are radially equidistantly distributed with the top center line of the movable seat 103 as the center.

[0044] Working principle: In the first embodiment, during the downward movement of the movable seat 103, the movable seat 103 can drive the housing 301 to move synchronously. The housing 301 drives the contact rod 303 and the rubber head 304 to move synchronously through the contact spring 302. The bottom of the rubber head 304 first contacts the top of the bipolar plate placed inside the stamping seat 104 for contact and limitation. As the movable seat 103 continues to move downward, the rubber head 304 and the contact rod 303 are subjected to the reaction force of the bipolar plate and are buffered by the compression of the contact spring 302. This causes the contact rod 303 to retract into the housing 301 and the rubber head 304 to retract into the movable seat 103. Thus, throughout the entire stamping process, the bipolar plate placed on the top of the stamping seat 104 is always elastically pressed and limited, and the contact rod 303 and the rubber head 304 are prevented from affecting the flow channel stamping and shaping operation.

[0045] The adaptive pressing auxiliary mechanism 3 realizes the dynamic limiting function in the bipolar plate stamping process, avoids the flow channel forming deviation caused by edge warping or position offset of the bipolar plate, solves the technical problem of difficult to guarantee the stamping accuracy of thin bipolar plates, and facilitates the improvement of the bipolar plate processing qualification rate.

[0046] The third implementation method:

[0047] To further improve the accuracy of the height adjustment of the contact block 203, reduce the difficulty of operation for operators, and make the demolding distance of the demolding template 205 more in line with the part removal requirements of bipolar plates of different thicknesses, this device is equipped with a scale auxiliary observation structure. Its specific structure and working principle are as follows.

[0048] refer to Figure 5In the third embodiment of the present invention, a scale plate 2023 is fixedly connected to the front of the bracket 201. The scale plate 2023 is correspondingly arranged with the abutment block 203 to assist in observing the adjustment height of the abutment block 203.

[0049] Working principle: In the first embodiment, when it is necessary to adjust the demolding distance of the demolding template 205, the operator can directly refer to the value of the scale plate 2023, rotate the locking part 2022 in the opposite direction to release the limit on the contact block 203, and push the contact block 203 to move in the moving groove 2021. The adjustment amount of the contact block 203 can be intuitively grasped through the scale plate 2023.

[0050] After moving to the target position, the forward rotation locking component 2022 fixes the abutment block 203, which can precisely adjust the abutment position between the abutment block 203 and the moving seat 103, thereby precisely controlling the distance of the ejector plate 205 supporting the bipolar plate;

[0051] This scale-assisted observation structure, through intuitive scale guidance, can not only improve adjustment efficiency but also avoid improper demolding distance of the demolding template 205 due to adjustment deviation. It further optimizes the ease of operation and adaptability of the device, making it easy for operators to quickly get started and for efficient operation in batch processing scenarios.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping device for processing bipolar plates of fuel cells, characterized in that: It includes box (1), the support frame (101) is fixedly connected on the top of the box (1), the electric rod (102) is fixedly connected in the inside of the support frame (101), the mobile seat (103) is fixedly connected on the output end of the electric rod (102), the flow channel stamping shaped plate (1031) is fixedly connected on the bottom of the mobile seat (103), the stamping seat (104) corresponding to the flow channel stamping shaped plate (1031) is also fixedly connected on the top of the box (1); It also includes linkage type auxiliary demolding mechanism (2), it includes the support (201) that penetrates the both sides of the top of the box (1), the abutting block (203) is movably installed on the inside of the top of the support (201), the inside of the support (201) is equipped with the adjusting assembly (202) for adjusting the height of the abutting block (203), the support (201) is fixedly connected with the support rod (204) that penetrates the box (1) and extends to the inside of the stamping seat (104) on the top center inside the box (1), the demolding plate (205) is fixedly connected on the top of the stamping seat (104), the reset spring (206) is sleeved on the outside of the support rod (204) and is fixedly connected with the top inside the box (1), for the elastic reset of the support rod (204).

2. The press apparatus for processing a fuel cell bipolar plate according to claim 1, characterized by: The support frame (101) is provided with a guide assembly for the movement limiting of the mobile seat (103) on the top, the guide assembly includes multiple groups of guide seats (1021) installed equidistantly on the top of the support frame (101), the limit rod (1022) is movably installed in the inside of the guide seat (1021), the limit rod (1022) is fixedly connected with the top of the mobile seat (103) on the bottom, for guiding and limiting the movement track of the mobile seat (103).

3. The press apparatus for processing a fuel cell bipolar plate according to claim 1, wherein: The adjusting assembly (202) includes the moving groove (2021) opened on the both sides of the top of the support (201), the moving groove (2021) is slidably fitted with one end of the abutting block (203), the locking piece (2022) extending to the inside of the abutting block (203) is threadedly installed on one side of the moving groove (2021), for limiting and fixing the movement position of the abutting block (203).

4. The press apparatus for processing a fuel cell bipolar plate according to claim 3, wherein: The front of the support (201) is fixedly connected with the scale plate (2023), the scale plate (2023) is correspondingly arranged with the abutting block (203), for assisting the observation of the adjusting height of the abutting block (203).

5. The stamping device for processing a fuel cell bipolar plate according to claim 1, characterized by: The linkage type auxiliary demolding mechanism (2) also includes the mounting frame (207) arranged between the two supports (201), the limit seat (2071) for limiting the movement position of the support (201) is fixedly connected in the inside of the mounting frame (207).

6. The stamping device for processing a fuel cell bipolar plate according to claim 1, characterized by: It also includes self-adaptive pressure holding auxiliary mechanism (3), it includes multiple groups of housings (301) fixedly connected on the top of the mobile seat (103), the abutting spring (302) is fixedly connected in the inside of the housing (301), the abutting rod (303) is fixedly connected with the rubber head (304) on the bottom of the abutting spring (302), for the elastic pressure holding limiting of the fuel cell bipolar plate during stamping.

7. The press apparatus for processing a fuel cell bipolar plate according to claim 6, wherein: The multiple groups of housings (301) are at least four groups, and the housings (301) are radially equidistantly distributed with the center line on the top center of the mobile seat (103) as the center.

8. The stamping device for processing a fuel cell bipolar plate according to claim 1, characterized by: The box (1) is fixed with an extension plate (4) on one side, which is used for placing and taking the bipolar plate.

9. The press apparatus for processing a fuel cell bipolar plate according to claim 1, characterized by: The demolding plate (205) is rectangular in shape, and the top of the demolding plate (205) is flush with the punching surface of the punching seat (104).

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