Dispensing clamp for metal bipolar plate of fuel cell

Abstract

The utility model provides a fuel cell metal bipolar plate dispensing clamp which comprises a base, a working table is arranged on the base, a square-shaped annular frame is arranged on the periphery of the working table, the annular frame comprises two base plates which are symmetrically arranged, two side plates are arranged between the two base plates in parallel, and a clamping seat is mounted on the inner side of each base plate; a clamping seat adjusting mechanism is arranged on the base plate, a workpiece containing space is formed between the two clamping seats, and the two side plates are provided with function grooves corresponding to the workpiece containing space. The clamping seat adjusting mechanism comprises an adjusting rod fixed to the clamping seat, the end, extending out of the side plate, of the adjusting rod is locked through a locking piece, and an elastic piece is installed on the adjusting rod. The clamping base comprises a body, chucks are arranged at the two ends of the body and face one side of the workpiece containing space, and the outer sides of the chucks are in sliding fit with the inner walls of the side plates. The distance between the clamping base and the base plate can be adjusted by screwing the locking piece, then the size of a workpiece containing space is changed, universality is better, and operation is easy and convenient.

Description

Technical Field

[0001] This invention belongs to the field of dispensing fixture technology, and in particular relates to a dispensing fixture for metal bipolar plates of fuel cells. Background Technology

[0002] Fuel cells, with their advantages of low operating temperature, high specific power, and rapid start-up, have become a hot research topic in the field of new energy. The key components of a fuel cell are the membrane electrode assembly (MEA) and bipolar plates. The bipolar plate assembly includes an anode plate and a cathode plate, which are combined and properly sealed between the anode and cathode plates to form a sealed coolant flow field. The plates constituting this assembly can be made of metal or graphite. During manufacturing, the anode and cathode plates are typically welded or bonded together to properly seal all fluid channels between themselves and the external environment. In existing technologies, epoxy resin adhesives capable of withstanding the fuel cell environment are commonly used to bond the bipolar plates, and each required fluid cavity is sealed and isolated through screen printing, dispensing, or in-mold injection molding. However, dispensing different sizes of products requires switching between different dispensing fixtures. A large number of dispensing fixtures cause difficulties in storage and transportation, and also increase production costs. Furthermore, the bonded bipolar plates are not easy to remove, leading to cumbersome operations and affecting work efficiency. Therefore, it is necessary to improve the existing dispensing fixtures. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a fuel cell metal bipolar plate dispensing fixture.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A fuel cell metal bipolar plate dispensing fixture includes a base with a worktable on the base. A U-shaped ring frame surrounds the worktable, and the ring frame includes two symmetrically arranged base plates, which are parallel to each other. Two side plates are arranged parallel between the two base plates. A clamp is installed inside each base plate, and the upper surface of the ring frame is lower than the upper surface of the clamp. A clamp adjustment mechanism is provided on the base plates, forming a workpiece placement space between the two clamps. Each side plate has a functional slot corresponding to the workpiece placement space. The clamp adjustment mechanism includes an adjustment rod fixed to the clamp. One end of the adjustment rod extending out of the side plate is locked by a locking member. An elastic member is installed on the adjustment rod, with one end abutting against the base plate and the other end abutting against the clamp. The clamp includes a main body with clamps at both ends, facing the workpiece placement space. A base portion and a working portion are provided inside the clamp, forming a positioning step between the working portion and the base portion. A guide portion is provided at the front end of the working portion. The outer side of the clamp slides against the inner wall of the side plate.

[0006] Furthermore, the elastic element includes a spring fitted onto the adjusting rod.

[0007] Furthermore, the adjusting rod is a threaded rod, and the locking element is a nut.

[0008] Furthermore, the bottom of the functional slot is higher than the worktable surface.

[0009] Furthermore, the width of the functional slot is smaller than the width of the workpiece placement space.

[0010] Furthermore, the distance between the positioning step and the main body of the clamp is 5-15mm.

[0011] Furthermore, the ring frame and the worktable are integrally formed.

[0012] Furthermore, the thickness of the substrate is greater than the thickness of the side plate.

[0013] Furthermore, the functional slot is centrally located on the side plate.

[0014] Compared with existing technologies, the present invention has the following advantages:

[0015] The invention features a reasonable structural design. The distance between the clamp and the base plate can be adjusted by screwing on the locking parts, thereby changing the size of the workpiece placement space. It is applicable to workpieces of different specifications and has better versatility. When applying glue to the workpiece, there will be no structural interference. After applying glue, the bipolar plate can be directly bonded without the clamp hindering the bonding operation. Furthermore, the functional slots on the side plate make it very convenient to remove the bipolar plates. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure created by this invention;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 This is a schematic diagram of the clamping part in the invention.

[0020] Figure 4 This is a schematic diagram of the clamp on the clamping seat in the present invention;

[0021] Figure 5 This is a schematic diagram of the clamp adjustment mechanism in this invention.

[0022] Figure 6 This is a schematic diagram illustrating the process of mounting the workpiece according to the present invention;

[0023] Figure 7 for Figure 6 Top view;

[0024] Figure 8 This is a schematic diagram of the clamp portion with an auxiliary positioning platform in this invention. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, "workpiece" is a general term and can be one of a bipolar plate, an anode plate, or a cathode plate.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] A fuel cell metal bipolar plate dispensing fixture, such as Figures 1 to 7As shown, the fixture includes a base 1, on which a worktable 2 is mounted. A U-shaped ring frame 3 is provided around the upper surface of the worktable. For example, the ring frame and the worktable can be integrally molded. The ring frame includes two symmetrically arranged base plates 4, which are parallel to each other, with side plates 5 arranged parallel between them. A clamp 6 is installed inside each base plate. The upper surface of the ring frame is lower than the upper surface of the clamp, ensuring that the ring frame does not obstruct the installation and removal of the clamp, nor does it hinder the loading and unloading of workpieces. A clamp adjustment mechanism 7 is provided on the base plates, forming a workpiece placement space 18 between the two clamps. Each side plate has a functional slot 8 corresponding to the workpiece placement space. Using the open positions of the functional slots, workpieces can be easily loaded and unloaded from the fixture by hand or with tools.

[0030] The clamp adjustment mechanism includes an adjusting rod 9 fixed to the clamp. One end of the adjusting rod extending outward from the side plate is locked by a locking member 10. An elastic member 11 is mounted on the adjusting rod, with one end abutting against the base plate and the other end abutting against the clamp. For example, the elastic member includes a spring fitted onto the adjusting rod. The adjusting rod is a threaded rod, and the locking member is a nut. By turning the locking member, the compression of the elastic member and the distance between the clamp and the base plate can be adjusted, thereby changing the size of the workpiece placement space to adapt to actual usage requirements. Simultaneously, the preload of the elastic member can also be adjusted by turning the locking member. It should be noted that different specifications of elastic members (springs) can be replaced to suit different usage needs.

[0031] The clamp includes a main body 12, with clamps 13 at both ends of the main body. The clamps are arranged facing the workpiece placement space. The inner side of the clamp is provided with a base part 14 and a working part 15. A positioning step 16 is formed between the working part and the base part. A guide part 17 with an inclined guide surface 19 is provided at the front end of the working part. That is, the opening of the clamp is large at the end facing the workpiece, while the opening is small at the end away from the workpiece. When the workpiece is inserted into the workpiece placement space, the workpiece 20 can be easily clamped by the clamps on both sides at the same time.

[0032] The outer side of the chuck slides against the inner wall of the side plate, and the outer surface of the base part and the outer surface of the working part are in the same plane. The side plate ensures the stability of the chuck during movement and also limits the chuck. When a workpiece is clamped between the two clamps, the chuck will not expand or deform outward. Under the limiting effect of the side plate, the chuck only slides and adjusts its position on the side plate. That is, the chuck spacing adjustment process is stable. When the workpiece is clamped, the elastic element pushes the clamp to tighten the workpiece. Therefore, the stability of the workpiece clamping and fixing and the glue application process is very good, which also ensures the glue application and the bonding quality of the bipolar plate.

[0033] Typically, the bottom of the functional groove is higher than the upper surface of the worktable. The width of the functional groove (between the two base plates) is less than the width of the workpiece placement space (between the two base plates). The distance between the positioning step and the main body of the clamp is 5-15mm. The thickness of the base plate is greater than the thickness of the side plate. The functional groove is centrally located on the side plate.

[0034] In an optional embodiment, such as Figure 8 As shown, the working part is provided with several auxiliary positioning platforms 21. The distance between each auxiliary positioning platform and the inner surface 22 of the base part (the inner surface of the base part refers to the side surface of the base part that is different from the side plate that it mates with) gradually decreases from the side of the base part to the side of the guide part. That is, multiple auxiliary positioning platforms that gradually recede are formed, which can be adapted to workpieces of different specifications and are interchangeable and can be used for bipolar plate dispensing production operations.

[0035] The invention features a reasonable structural design. The distance between the clamp and the base plate can be adjusted by screwing on the locking parts, thereby changing the size of the workpiece placement space. It is applicable to workpieces of different specifications and has better versatility. When applying glue to the workpiece, there will be no structural interference. After applying glue, the bipolar plate can be directly bonded without the clamp hindering the bonding operation. Furthermore, the functional slots on the side plate make it very convenient to remove the bipolar plates.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fuel cell metal bipolar plate dispensing fixture, characterized by: The utility model relates to a workbench, including base, be equipped with worktop on the base, be equipped with " mouth" type ring frame around the worktop, ring frame includes two base plates of symmetrical arrangement, two side plates are arranged in parallel between the two base plates, the inner side of each base plate is equipped with the clamping seat, and the upper end surface of ring frame is lower than the upper end surface of clamping seat, be equipped with clamping seat adjusting mechanism on the base plate, form workpiece installation space between two clamping seats, and two side plates are all equipped with functional groove corresponding workpiece installation space, clamping seat adjusting mechanism includes the adjusting rod fixed on the clamping seat, and the one end of adjusting rod that stretches out of side plate is locked through locking piece, and the elastic element is installed on adjusting rod, and one end of the elastic element is pressed against base plate, and the other end is pressed against clamping seat, clamping seat includes main body, and both ends of main body are equipped with chuck, and the one side of chuck is arranged towards workpiece installation space, and the inner side of chuck is equipped with base part and work part, and the positioning step is formed between work part and base part, and the guide part is equipped with in work part front end, and the outer side of chuck is slidably connected with the inner wall of side plate.

2. The dispensing fixture for fuel cell metal bipolar plates of claim 1, wherein: The elastic element comprises a spring sleeved on the adjusting rod.

3. The dispensing fixture for fuel cell metal bipolar plates of claim 1, wherein: The adjusting rod is a threaded rod, and the locking piece is a nut.

4. The dispensing fixture for fuel cell metal bipolar plates of claim 1, wherein: The bottom of the functional groove is higher than the worktop.

5. The dispensing fixture for fuel cell metal bipolar plates of claim 1, wherein: The width of the functional groove is less than the width of the workpiece installation space.

6. The dispensing fixture for fuel cell metal bipolar plates of claim 1, wherein: The distance between the positioning step and the main body of the clamping seat is 5-15mm.

7. The dispensing fixture for fuel cell metal bipolar plates of any one of claims 1 to 6, wherein: The functional groove is centrally arranged on the side plate.

8. The dispensing fixture for fuel cell metal bipolar plates according to any one of claims 1 to 6, characterized in that: The ring frame and the worktop are integrally formed.

9. The dispensing fixture for fuel cell metal bipolar plates according to any one of claims 1 to 6, characterized in that: The thickness of the base plate is greater than the thickness of the side plate.

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