CN220763674U

CN220763674U - Forming die for producing fuel cell bipolar plate

Info

Publication number: CN220763674U
Application number: CN202321872419.7U
Authority: CN
Inventors: 李有慧
Original assignee: Wuhan Weikai Technology Co ltd
Current assignee: Wuhan Weikai Technology Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-04-12
Anticipated expiration: 2033-07-17

Abstract

The utility model belongs to the technical field of fuel cell manufacturing, and discloses a forming die for producing a bipolar plate of a fuel cell, which comprises an upper die, wherein the lower end of the upper die is provided with an adaptive lower die, the upper end of the lower die is provided with a groove for placing the bipolar plate, the middle part of the groove is uniformly provided with a plurality of through holes, the lower end of the lower die is provided with a first cavity corresponding to the groove, the lower end of the through hole is communicated with the first cavity, the bottom end of the inside of the lower die is provided with a second cavity, the inside of the through hole is provided with a movable rod in a sliding manner, the top end of the movable rod is fixedly provided with a disc, one side of the second cavity is fixedly communicated with a first conveying pipe, one end of the first conveying pipe is fixedly provided with a pump body, one side of the first cavity is fixedly communicated with a second conveying pipe, and the second conveying pipe is fixedly connected with the pump body.

Description

Forming die for producing fuel cell bipolar plate

Technical Field

The utility model belongs to the technical field of fuel cell manufacturing, and particularly relates to a forming die for producing a bipolar plate of a fuel cell.

Background

Nowadays, with the rapid development of new energy industries, the main trend of new energy automobiles is diversification of automobile energy and electromotive of automobile power. The high efficiency and no pollution emission of the fuel cell are the primary choice of new energy automobiles, and the bipolar plate is also called a collector plate and is one of important parts of the fuel cell.

At present, after the bipolar plate is produced and molded, the demolding is inconvenient, the thickness of the bipolar plate is thin, the existing ejection device compresses the springs through the downward pressing of the upper die, the upper die moves upwards after molding to enable the springs to rebound to eject the bipolar plate, the springs are aged after being used for many times, the rebound speeds of the springs are possibly inconsistent, uneven stress is caused when the bipolar plate is ejected, the bipolar plate is deformed due to local protrusion, the bipolar plate is damaged, the rebound speed of the springs is very high, and the bipolar plate is possibly damaged in the ejection process.

Disclosure of Invention

(one) solving the technical problems

In order to solve the problems in the background technology, the utility model provides a forming die for producing a bipolar plate of a fuel cell, which has the advantages of uniform stress, mild ejection speed and no deformation of the bipolar plate.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a forming die is used in production of fuel cell bipolar plate, includes the last mould, the last mould lower extreme is provided with the bed die of adaptation, the recess that is used for placing bipolar plate is seted up to the bed die upper end, a plurality of through-hole has evenly been seted up at the recess middle part, first cavity that corresponds with the recess is seted up to the bed die lower extreme, through-hole lower extreme and first cavity intercommunication, the second cavity has been seted up to the inside bottom of bed die, the inside slip of through-hole is provided with the movable rod, the fixed disc that is provided with in movable rod top, the fixed first conveyer pipe of one side intercommunication of second cavity, the fixed pump body that sets up of first conveyer pipe one end, the fixed second conveyer pipe of first cavity one side intercommunication, second conveyer pipe and pump body fixed connection.

Preferably, the lower end of the movable rod is fixedly provided with a spring, and the lower end of the spring is fixedly connected with the bottom of the inner cavity of the first cavity.

Preferably, a limit ring is fixedly arranged at the upper end of the inner wall of the through hole, and the surface of the disc and the groove are in the same horizontal plane.

Preferably, the movable rod is fixedly provided with a piston on the surface, sealing rings are sleeved at two ends of the piston, and the sealing rings are tightly attached to the inner wall of the through hole.

Preferably, the movable rod penetrates through the middle part of the limit ring.

Preferably, the second conveying pipe is fixedly communicated with the middle of the third conveying pipe, and the other end of the third conveying pipe is fixedly communicated with the upper end of the second cavity.

Preferably, the diameter of the disc is smaller than the inner diameter of the cavity of the through hole, and the disc is in precise fit with the through hole.

(III) beneficial effects

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, hydraulic oil in the second cavity is conveyed into the first cavity through the first conveying pipe and the second conveying pipe by the pump body, then the hydraulic oil simultaneously enters a plurality of through holes communicated with the first cavity, the piston, the movable rod and the discs are pushed to move upwards, the bipolar plate is ejected out by the discs, the stress is more uniform, and the bipolar plate is ejected out from the lower die without damage.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic top view of the lower mold of the present utility model;

FIG. 3 is a schematic view of the internal main structure of the lower mold of the present utility model;

FIG. 4 is a schematic diagram showing the front view of the inside of the lower die of the utility model;

FIG. 5 is a schematic view of the explosive structure of the lower mold of the present utility model.

In the figure: 1. an upper die; 2. a lower die; 3. a groove; 4. a through hole; 5. a first cavity; 6. a second cavity; 7. a first delivery tube; 8. a pump body; 9. a second delivery tube; 10. a third delivery tube; 11. a limit ring; 12. a disc; 13. a movable rod; 14. a piston; 15. a seal ring; 16. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, the utility model provides a forming die for producing a bipolar plate of a fuel cell, which comprises an upper die 1, wherein the lower end of the upper die 1 is provided with an adaptive lower die 2, the upper end of the lower die 2 is provided with a groove 3 for placing the bipolar plate, the middle part of the groove 3 is uniformly provided with a plurality of through holes 4, the lower end of the lower die 2 is provided with a first cavity 5 corresponding to the groove 3, the lower end of the through hole 4 is communicated with the first cavity 5, the bottom end of the inner part of the lower die 2 is provided with a second cavity 6, the inside of the through hole 4 is slidably provided with a movable rod 13, the top end of the movable rod 13 is welded with a disc 12, one side of the second cavity 6 is communicated with and fixed with a first conveying pipe 7, one end of the first conveying pipe 7 is fixedly provided with a pump body 8, one side of the first cavity 5 is communicated with and fixed with a second conveying pipe 9, and the second conveying pipe 9 is fixedly connected with the pump body 8.

The pump body 8 is in the prior art, and the principle thereof is not described in detail, and the utility model also comprises a switch, a power supply controller, a PLC controller, an electronic valve and the like, which are not main technologies, and are not described in detail.

The metal plate is placed in a groove 3 in a lower die 2, a switch is pressed down, an upper die 1 is controlled to be pressed down by a power controller, after the metal plate is stamped and formed, an electronic valve on a second conveying pipe 9 is controlled to be opened by a PLC controller, the pump body 8 is controlled to start working, hydraulic oil in a second cavity 6 is conveyed into the second conveying pipe 9 through a first conveying pipe 7, then the hydraulic oil enters a first cavity 5 communicated with the second conveying pipe 9, after the hydraulic oil in the first cavity 5 is filled, the hydraulic oil enters a plurality of through holes 4 communicated with the first cavity 5, a piston 14 in the through holes 4 is pushed to move upwards, a spring 16 is driven to stretch upwards, a movable rod 13 and a disc 12 fixed at the upper end of the movable rod 13 are pushed to move upwards, a bipolar plate after being formed is ejected out of the groove 3 and conveyed to the next working procedure, then the PLC controller is controlled to close the electronic valve on a third conveying pipe 10, the hydraulic oil is controlled to flow back into the second cavity 6 through the third conveying pipe 10, and the hydraulic oil returns to the original position of the movable rod 13 under the action of the spring 16.

Specifically, the spring 16 is welded at the lower end of the movable rod 13, the lower end of the spring 16 is welded with the bottom of the inner cavity of the first cavity 5, the piston 14 is fixedly arranged on the surface of the movable rod 13, the sealing rings 15 are sleeved at two ends of the piston 14, the sealing rings 15 are tightly attached to the inner wall of the through hole 4, the diameter of the disc 12 is smaller than the inner diameter of the cavity of the through hole 4, and the disc 12 is precisely matched with the through hole 4. According to the utility model, the chamfer is arranged at the lower end of the disc 12, so that the disc is more convenient and quicker to enter the through holes 4, the spring 16 stretches under the action of hydraulic pressure, after hydraulic pressure is lost, the movable rod 13 returns to the original position quickly, the size of the piston 14 is the same as that of the disc 12 and is used for pushing the movable rod 13 to move upwards, clamping grooves (not shown in the figure) sleeved with sealing rings 15 are arranged at the two ends of the piston 14, the sealing rings 15 are used for preventing hydraulic oil from entering the upper ends of the piston 14, the lower ends of the through holes 4 are communicated with the first cavities 5, hydraulic oil is conveniently and simultaneously entered into the through holes 4 from the first cavities 5, the ascending movement of the movable rod 13 in the through holes 4 is synchronous, the stress is even, the deformation of a bipolar plate is not caused, the diameter of the disc 12 is smaller than the inner diameter of the through holes 4, and the disc is precisely matched with the inner diameter of the through holes 4, and the residues can be effectively prevented from entering the through holes 4.

Further, a limit ring 11 is welded at the upper end of the inner wall of the through hole 4, the surface of the disc 12 and the groove 3 are in the same horizontal plane, and the movable rod 13 penetrates through the middle part of the limit ring 11. According to the utility model, the inner diameter of the middle part of the limit ring 11 is slightly larger than the diameter of the movable rod 13, the inner diameter is precisely matched with the inner diameter, the guide function is realized, the movable rod 13 moves in the vertical direction, the movable rod 13 moves upwards to reach the maximum distance when the lower end of the limit ring 11 is abutted against the upper end of the piston 14, and when the movable rod 13 descends, the lower end of the disc 12 is abutted against the upper end of the limit ring 11, so that the surface of the disc 12 and the groove 3 are kept in the same plane, and the surface of the groove 3 is prevented from damaging the bipolar plate.

Still further, the second conveying pipe 9 is fixedly connected with a third conveying pipe 10 in the middle, and the other end of the third conveying pipe 10 is fixedly connected with the upper end of the second cavity 6. According to the utility model, the third conveying pipe 10 is used for conveying the hydraulic oil in the first cavity 5 back into the second cavity 6, so that the circulation of the hydraulic oil is realized.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a forming die is used in production of fuel cell bipolar plate, includes mould (1), the lower extreme of going up mould (1) is provided with bed die (2) of adaptation, its characterized in that: the novel double-pole plate structure is characterized in that a groove (3) for placing the double-pole plate is formed in the upper end of the lower die (2), a plurality of through holes (4) are uniformly formed in the middle of the groove (3), a first cavity (5) corresponding to the groove (3) is formed in the lower end of the lower die (2), the lower end of the through hole (4) is communicated with the first cavity (5), a second cavity (6) is formed in the inner bottom end of the lower die (2), a movable rod (13) is slidably arranged in the through hole (4), a disc (12) is fixedly arranged at the top end of the movable rod (13), a first conveying pipe (7) is fixedly arranged at one side of the second cavity (6), a pump body (8) is fixedly arranged at one end of the first conveying pipe (7), a second conveying pipe (9) is fixedly communicated with one side of the first cavity (5), and the second conveying pipe (9) is fixedly connected with the pump body (8).

2. The molding die for producing a bipolar plate for a fuel cell according to claim 1, wherein: the lower end of the movable rod (13) is fixedly provided with a spring (16), and the lower end of the spring (16) is fixedly connected with the bottom of the inner cavity of the first cavity (5).

3. The molding die for producing a bipolar plate for a fuel cell according to claim 1, wherein: the upper end of the inner wall of the through hole (4) is fixedly provided with a limit ring (11), and the surface of the disc (12) and the groove (3) are in the same horizontal plane.

4. The molding die for producing a bipolar plate for a fuel cell according to claim 1, wherein: the movable rod (13) is fixedly provided with a piston (14) on the surface, sealing rings (15) are sleeved at two ends of the piston (14), and the sealing rings (15) are tightly attached to the inner wall of the through hole (4).

5. A molding die for producing a bipolar plate for a fuel cell according to claim 3, wherein: the movable rod (13) penetrates through the middle part of the limit ring (11).

6. The molding die for producing a bipolar plate for a fuel cell according to claim 1, wherein: the middle of the second conveying pipe (9) is communicated and fixed with a third conveying pipe (10), and the other end of the third conveying pipe (10) is communicated and fixed at the upper end of the second cavity (6).

7. A molding die for producing a bipolar plate for a fuel cell according to claim 3, wherein: the diameter of the disc (12) is smaller than the inner diameter of the cavity of the through hole (4), and the disc (12) is precisely matched with the through hole (4).