Laser welding clamp suitable for fuel cell metal bipolar plate

Abstract

The utility model discloses a laser welding clamp applicable to a fuel cell metal bipolar plate, which comprises an outer shell, a welding device is fixedly mounted at the upper end in the outer shell, a first motor is fixedly mounted at the left end of the outer shell, and a workbench is movably mounted at the inner end of the outer shell. The transmission end of the first motor is fixedly connected to the left end of a workbench, and the right end of the workbench is rotationally connected with a connecting shaft. According to the laser welding clamp suitable for the fuel cell metal bipolar plate, two sets of moving seats are arranged in the middle of the workbench, the fuel cell metal bipolar plates of different sizes can be clamped and limited, and the first motor is used for driving the whole workbench to rotate; the two faces of the fuel cell metal bipolar plate can be machined and welded, and the overall flexibility of the device is improved while limiting and fixing of the fuel cell metal bipolar plate are not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of bipolar plate laser welding fixtures, in particular to a laser welding fixture applicable to metal bipolar plates of fuel cells. Background Art

[0002] Fuel cells are pollution-free, highly efficient, noiseless and continuously working power devices. Directly converting the chemical energy of fuel into electrical energy is the fourth power generation technology after hydroelectric power generation, thermal power generation and atomic power generation. Compared with traditional energy conversion technologies, it has many advantages such as large capacity, high specific energy, high conversion efficiency and wide power range. Its core component is the bipolar plate, which plays a decisive role in the life and performance of the battery. Therefore, special fixtures are required in the laser welding of metal bipolar plates of fuel cells.

[0003] The new type of laser welding device for ultra-thin metal bipolar plates of fuel cells disclosed in the Chinese utility model patent application disclosure CN208051153U includes a cooling base, a fixture base, an upper plate and a cylinder; the fixture base is connected to the cooling base by screws; the upper plate and the pressure plate are positioned by the positioning pins on the fixture base and are contacted and connected by the cylinder; the cooling base is an S-shaped flow channel, and the water flow channel on the base is 6-10mm. There are guide positioning pins on the base plate and positioning holes on the cover plate to enable accurate positioning and fast loading and removal of the fixture. The cylinder is used to press at the same time, the pressure is adjustable, the workpiece is evenly stressed, the water cooling is used to cool the workpiece (metal bipolar plate) quickly, and the temperature of the welding area is not high; the boss supports the welding part, so that the workpiece is flat and the welding deformation is small. However, the fixture currently used for laser welding of metal bipolar plates of fuel cells has a fixed position angle, and the angle of the metal bipolar plates of fuel cells cannot be adjusted according to needs, which is not convenient for welding at multiple angles and has low overall flexibility. Utility Model Content

[0004] The purpose of the utility model is to provide a laser welding fixture applicable to metal bipolar plates of fuel cells to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A laser welding fixture applicable to metal bipolar plates of fuel cells comprises an outer shell, a welding device is fixedly mounted on the inner upper end of the outer shell, a first motor is fixedly mounted on the left end of the outer shell, a workbench is movably mounted on the inner end of the outer shell, a transmission end of the first motor is fixedly connected to the left end of the workbench, a connecting shaft is rotatably connected to the right end of the workbench, a connecting plate is fixedly connected to the right end of the connecting shaft, and the connecting shaft is rotatably connected to the right end of the inner end of the outer shell.

[0007] Preferably, a second motor is fixedly installed on the left end of the connecting plate, a sliding groove is fixedly provided on the rear end of the workbench, a bidirectional threaded rod is fixedly installed on the transmission end of the left end of the second motor, the bidirectional threaded rod is located at the inner end of the sliding groove, and sliding blocks are threadedly connected to the left and right ends of the outer end of the bidirectional threaded rod.

[0008] Preferably, a moving seat is fixedly installed on the left and right ends of the inner end of the workbench, the outer end of the left rotating end of the second motor is fixedly connected to the first gear, the first gear is located at the right end of the workbench, the right end of the workbench is rotatably connected to the second gear, the right end of the second gear is fixedly installed with a connecting plate, and the outer ends of the first gear and the second gear are movably installed with racks.

[0009] Preferably, the upper end of the movable seat is movably mounted on a bolt, the bolt extends to the lower end of the movable seat, and a pressure plate is fixedly mounted on the lower end of the bolt.

[0010] Preferably, a fixed block is fixedly installed on the rear end of the upper end of the workbench, a third motor is fixedly installed on the inner end of the fixed block, a lead screw is fixedly installed on the transmission end of the left end of the third motor, a movable block is threadedly connected to the outer end of the lead screw, and a movable groove is fixedly provided on the front end of the fixed block.

[0011] Preferably, the front end of the movable block is fixedly connected to a connecting seat, the upper end of the connecting seat is movably mounted with a rotating block, the rotating block extends to the middle of the connecting seat, and the lower end of the rotating block is fixedly mounted with a limiting block.

[0012] Preferably, a threaded block is fixedly mounted on the lower end of the limit block, a cleaning brush is threadedly mounted on the lower end of the threaded block, a threaded groove is fixedly arranged on the cleaning brush, and the threaded block is threadedly connected to the threaded groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A laser welding fixture applicable to metal bipolar plates of fuel cells. By setting two sets of movable seats in the middle of a workbench, metal bipolar plates of fuel cells of different sizes can be clamped and limited. The first motor is used to drive the workbench to rotate as a whole, so that both sides of the metal bipolar plates of fuel cells can be processed and welded. While not affecting the limiting and fixing of the metal bipolar plates of fuel cells, the overall flexibility of the device is also increased.

[0015] 2. A fixture suitable for laser welding of metal bipolar plates of fuel cells. A cleaning brush is arranged on the upper surface of the workbench. The movable block drives the connecting seat and the cleaning brush to move back and forth to clean the debris caused by processing on the surface of the metal bipolar plate of the fuel cell, so as to avoid the accumulation of debris affecting subsequent work. At the same time, the rotating block can be turned to separate the thread block from the thread groove, so as to replace the cleaning brush and increase practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an enlarged structural schematic diagram of the workbench of the utility model;

[0018] Figure 3 A schematic diagram of the structure of part of the utility model

[0019] Figure 4 It is a structural schematic diagram of the mobile seat of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure between the fixing block and the cleaning brush of the utility model.

[0021] In the figure: 1. outer shell; 2. welding device; 3. first motor; 4. workbench; 5. connecting shaft; 6. connecting plate; 7. second motor; 8. bidirectional threaded rod; 9. sliding block; 10. sliding groove; 11. moving seat; 12. first gear; 13. rack; 14. second gear; 15. bolt; 16. pressure plate; 17. fixed block; 18. third motor; 19. lead screw; 20. movable block; 21. movable groove; 22. connecting seat; 23. rotating block; 24. limit block; 25. threaded block; 26. cleaning brush; 27. threaded groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5 , the embodiment of the laser welding fixture applicable to the metal bipolar plate of the fuel cell of the utility model is as follows:

[0024] It includes an outer shell 1, a welding device 2 is fixedly installed on the inner upper end of the outer shell 1, a first motor 3 is fixedly installed on the left end of the outer shell 1, a workbench 4 is movably installed on the inner end of the outer shell 1, a transmission end of the first motor 3 is fixedly connected to the left end of the workbench 4, the right end of the workbench 4 is rotatably connected to a connecting shaft 5, the right end of the connecting shaft 5 is fixedly connected to a connecting plate 6, and the connecting shaft 5 is rotatably connected to the right end of the inner end of the outer shell 1.

[0025] A second motor 7 is fixedly installed on the left end of the connecting plate 6, a sliding groove 10 is fixedly set at the rear end of the workbench 4, a bidirectional threaded rod 8 is fixedly installed on the transmission end of the left end of the second motor 7, the bidirectional threaded rod 8 is located at the inner end of the sliding groove 10, and sliding blocks 9 are threadedly connected to the left and right ends of the outer end of the bidirectional threaded rod 8.

[0026] A moving seat 11 is fixedly installed on the left and right ends of the inner end of the workbench 4, and the outer end of the left rotating end of the second motor 7 is fixedly connected to the first gear 12. The first gear 12 is located at the right end of the workbench 4. The right end of the workbench 4 is rotatably connected to the second gear 14. The right end of the second gear 14 is fixedly installed with a connecting plate 6, and the outer ends of the first gear 12 and the second gear 14 are movably installed with a rack 13.

[0027] The upper end of the movable seat 11 is movably mounted on the bolt 15 . The bolt 15 extends to the lower end of the movable seat 11 . A pressing plate 16 is fixedly mounted on the lower end of the bolt 15 .

[0028] A fixed block 17 is fixedly installed at the rear end of the upper end of the workbench 4, a third motor 18 is fixedly installed at the inner end of the fixed block 17, a lead screw 19 is fixedly installed at the transmission end of the left end of the third motor 18, a movable block 20 is threadedly connected to the outer end of the lead screw 19, and a movable groove 21 is fixedly provided at the front end of the fixed block 17.

[0029] The front end of the movable block 20 is fixedly connected to a connecting seat 22 , the upper end of the connecting seat 22 is movably mounted with a rotating block 23 , the rotating block 23 extends to the middle of the connecting seat 22 , and the lower end of the rotating block 23 is fixedly mounted with a limiting block 24 .

[0030] A threaded block 25 is fixedly mounted on the lower end of the limiting block 24 , a cleaning brush 26 is threadedly mounted on the lower end of the threaded block 25 , a threaded groove 27 is fixedly provided on the cleaning brush 26 , and the threaded block 25 is threadedly connected to the threaded groove 27 .

[0031] Working principle: When it is needed, place the fuel cell metal bipolar plate in the middle position of the workbench 4, start the second motor 7 to rotate the bidirectional threaded rod 8, and at the same time, the first gear 12, the rack 13 and the second gear 14 are meshed with each other, so that the two bidirectional threaded rods 8 rotate together, driving the sliding blocks 9 in the two groups to move toward the middle at the same time, thereby driving the moving seat 11 to clamp the two sides of the fuel cell metal bipolar plate, and then turn the bolt 15 to move the pressure plate 16 downward to press the fuel cell metal bipolar plate, and then proceed with processing. When it is necessary to weld the other side of the fuel cell metal bipolar plate, start the first motor 3 to drive the workbench 4 to rotate as a whole, so as to facilitate welding of different sides of the fuel cell metal bipolar plate.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A laser welding fixture applicable to metal bipolar plates of fuel cells, characterized in that: It includes an outer shell, a welding device is fixedly installed on the inner upper end of the outer shell, a first motor is fixedly installed on the left end of the outer shell, a workbench is movably installed on the inner end of the outer shell, a transmission end of the first motor is fixedly connected to the left end of the workbench, a connecting shaft is rotatably connected to the right end of the workbench, a connecting plate is fixedly connected to the right end of the connecting shaft, and the connecting shaft is rotatably connected to the right end of the inner end of the outer shell.

2. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 1, characterized in that: A second motor is fixedly installed on the left end of the connecting plate, a sliding groove is fixedly provided on the rear end of the workbench, a bidirectional threaded rod is fixedly installed on the transmission end of the left end of the second motor, the bidirectional threaded rod is located at the inner end of the sliding groove, and sliding blocks are threadedly connected to the left and right ends of the outer end of the bidirectional threaded rod.

3. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 2, characterized in that: A moving seat is fixedly installed on the left and right ends of the inner end of the workbench, the outer end of the left rotating end of the second motor is fixedly connected to the first gear, the first gear is located at the right end of the workbench, the right end of the workbench is rotatably connected to the second gear, the right end of the second gear is fixedly installed with a connecting plate, and racks are movably installed on the outer ends of the first gear and the second gear.

4. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 3, characterized in that: The upper end of the movable seat is movably mounted on a bolt, the bolt extends to the lower end of the movable seat, and a pressing plate is fixedly mounted on the lower end of the bolt.

5. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 4, characterized in that: A fixed block is fixedly installed on the rear end of the upper end of the workbench, a third motor is fixedly installed on the inner end of the fixed block, a lead screw is fixedly installed on the transmission end of the left end of the third motor, a movable block is threadedly connected to the outer end of the lead screw, and a movable groove is fixedly provided on the front end of the fixed block.

6. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 5, characterized in that: The front end of the movable block is fixedly connected with a connecting seat, the upper end of the connecting seat is movably mounted with a rotating block, the rotating block extends to the middle of the connecting seat, and the lower end of the rotating block is fixedly mounted with a limiting block.

7. A laser welding fixture applicable to metal bipolar plates of fuel cells according to claim 6, characterized in that: A threaded block is fixedly mounted on the lower end of the limit block, a cleaning brush is threadedly mounted on the lower end of the threaded block, a threaded groove is fixedly arranged on the cleaning brush, and the threaded block is threadedly connected to the threaded groove.

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