Universal explosion-proof valve welding tool device

Abstract

The utility model discloses a universal explosion-proof valve welding tool device which is used for positioning a top cover and an explosion-proof valve, the top cover is provided with an installation hole used for being matched with the explosion-proof valve, the universal explosion-proof valve welding tool device comprises a base, and the base is provided with two first clamping structures used for clamping the left side and the right side of the top cover respectively. The base is further provided with two first clamping structures used for clamping the front side and the rear side of the top cover correspondingly, and the two second clamping structures are arranged between the two first clamping structures and can be adjusted in a relative displacement mode. The base is further provided with a positioning seat, and the positioning seat is provided with a positioning boss which is used for supporting the anti-explosion valve and forms limiting with the mounting hole of the top cover. The top cover and the anti-explosion valve can be positioned, and deviation of the anti-explosion valve during welding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a universal explosion-proof valve welding tool device. Background Art

[0002] Lithium batteries are one of the main power sources for electric vehicles. The top cover of a lithium battery is a key component. It typically features multiple mounting holes for the positive and negative electrodes and the explosion-proof valve. The explosion-proof valve is typically secured to the mounting holes in the top cover by welding. Because the main body of the explosion-proof valve is a single-piece structure, it must be positioned within the mounting holes before welding. Therefore, a tooling structure that can stably position the top cover and explosion-proof valve is urgently needed. Utility Model Content

[0003] The purpose of the utility model is to provide a universal explosion-proof valve welding tooling device designed to solve the deficiencies of the above-mentioned technology.

[0004] The utility model designs a universal explosion-proof valve welding tooling device, which is used for positioning a top cover and an explosion-proof valve. The top cover is provided with a mounting hole for matching the explosion-proof valve, which includes a base, the base is provided with two first clamping structures for clamping the left and right sides of the top cover respectively, and a relatively displaceable and adjustable setting is formed between the two first clamping structures, the base is further provided with two second clamping structures for clamping the front and rear sides of the top cover respectively, and a relatively displaceable and adjustable setting is formed between the two second clamping structures; the base is also provided with a positioning seat, and the positioning seat is provided with a positioning boss that forms a limit with the mounting hole of the top cover.

[0005] Preferably, the first clamping structure includes two screw pairs distributed in the same straight line, and the two screw pairs are respectively equipped with first moving blocks. The two first moving blocks are relatively displaced by rotating the corresponding screw pairs. Each first moving block is provided with a first clamping block. The base is provided with a driving shaft between the ends of the two screw pairs, and the driving shaft is provided with a driving bevel gear. The opposite ends of the two screw pairs are respectively provided with driven bevel gears meshing with the driving bevel gears.

[0006] Preferably, the second clamping structure includes a bidirectional screw, on which two second moving blocks are mounted. The two second moving blocks are relatively displaced by the rotation of the bidirectional screw, and each second moving block is provided with a second clamping block.

[0007] Further optimized, the base is provided with a third clamping block between the two second clamping blocks, so that the two second clamping blocks can respectively form a clamp with the third clamping block, thereby achieving simultaneous clamping of two top covers distributed front and back.

[0008] Preferably, a groove body is provided on the surface of the positioning seat, the positioning boss is located in the center of the groove body, and a positioning groove is formed between the positioning boss and the groove body.

[0009] Further optimization is performed, in which an air hole is provided on the top surface of the positioning boss, and an air extraction channel is provided on the base, and the air extraction channel is connected to the air hole and is connected to an external vacuum pumping device.

[0010] Further optimized, the base includes a base and a mounting base connected to the top of the base, the first clamping structure and the second clamping structure are installed on the base, the mounting base is provided with a mounting groove, the bottom of the positioning seat is provided with a positioning protrusion embedded in the mounting groove, and the positioning protrusion is provided with a connecting hole connecting the exhaust channel and the air hole.

[0011] Preferably, the side surfaces of the first clamping block and the second clamping block are provided with step surfaces, and the step surfaces include a horizontal surface and a vertical surface. The horizontal surface is used to abut against the bottom surface of the top cover and support the top cover, and the vertical surface is used to abut against the side surface of the top cover.

[0012] Further optimization is performed, where both sides of the first clamping block and the second clamping block are provided with step surfaces.

[0013] The technical effect of the utility model is that two relatively distributed screw pairs are arranged on the base body, bevel gears are arranged on the ends of the two screw pairs, a driving shaft is provided between the two screw pairs, a bevel gear is sleeved on the driving shaft, and the three bevel gears are meshed. The bevel gears are driven by rotating the driving shaft, thereby driving the two screw pairs to move synchronously. The two screw pairs are respectively equipped with clamping blocks, and the two screw pairs are distributed in the left and right directions, thereby clamping the left and right sides of the top cover. A bidirectional screw is also provided on the base body, and the bidirectional screw is distributed in the front and back directions. The other two clamping blocks are relatively displaced to achieve clamping of the front and rear sides of the top cover, and finally achieve clamping of the top cover in four directions by the clamping blocks, and can clamp top covers of different models and sizes; in addition, the base is provided with a positioning protrusion at the bottom of the top cover, and the positioning protrusion is used to locate the mounting hole for installing the explosion-proof valve. The positioning protrusion is provided with an air hole, and the base is provided with an exhaust channel connected to the air hole. The air hole is vacuumed through the exhaust channel, so that the explosion-proof valve is adsorbed in the mounting hole to position the explosion-proof valve, thereby avoiding displacement of the explosion-proof valve during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the utility model (with the top cover clamped);

[0015] Figure 2 This is an exploded view of the overall structure of the utility model (without the top cover);

[0016] Figure 3This is an exploded view of the overall structure of the utility model;

[0017] Figure 4 This is a structural diagram of the first clamping structure and the second clamping structure in the present utility model;

[0018] Figure 5 It is a structural diagram of the base in the utility model;

[0019] Figure 6 This is a bottom view of the positioning seat in the utility model;

[0020] Figure 7 It is a bottom view of the top cover in the utility model.

[0021] In the figure: 1, top cover; 11, mounting hole; 12, protrusion; 2, explosion-proof valve; 3, base; 31, base; 32, mounting seat; 33, mounting slot; 34, avoidance slot;

[0022] 4. First clamping structure; 41. Screw pair; 42. First moving block; 43. First clamping block; 44. Drive shaft; 45. Active bevel gear; 46. Driven bevel gear;

[0023] 5. Second clamping structure; 51. Bidirectional lead screw; 52. Second moving block; 53. Second clamping block; 54. Third clamping block;

[0024] 6. Positioning seat; 61. Slot body; 62. Positioning boss; 63. Positioning slot; 64. Air hole; 65. Positioning convex portion; 66. Connecting hole;

[0025] 67. Exhaust channel; 68. Step surface; 681. Horizontal surface; 682. Vertical surface. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] The utility model provides a universal explosion-proof valve welding tooling device, such as Figure 1 and 3 As shown, it is used to position the top cover 1 and the explosion-proof valve 2. A mounting hole 11 is opened on the top cover 1, and the explosion-proof valve 2 is positioned in the mounting hole 11. Then, the explosion-proof valve 2 is welded to the mounting hole 11 of the top cover 1 by welding.

[0028] The tooling device includes a base 3, on which are provided two first clamping structures 4 for clamping the left and right sides of the top cover 1, and two second clamping structures 5 for clamping the front and rear sides of the top cover 1. The first clamping structure 4 and the second clamping structure 5 are respectively clamped on the left and right sides and the front and rear sides of the top cover 1, so that the top cover 1 is positioned. The relative displacement between the two first clamping structures 4 can be adjusted, and the relative displacement between the two second clamping structures 5 can also be adjusted. Since the top cover 1 is a square sheet structure, the first clamping structure 4 and the second clamping structure 5 can clamp top covers 1 of different sizes by adjusting the corresponding displacement, forming a universal tooling device.

[0029] A positioning seat 6 is provided on the base 3, and a positioning boss 62 is provided on the positioning seat 6. The shape of the positioning boss 62 is adapted to the mounting hole 11 of the top cover 1, so that the positioning boss 62 is inserted into the mounting hole 11 of the top cover 1 to form a limit with the mounting hole 11, and the explosion-proof valve 2 is placed in the mounting hole 11.

[0030] Specifically, Figure 4 As shown, the first clamping structure 4 includes two screw pairs 41, the screw pairs 41 include screws and nuts located on the screws, the screws of the two screw pairs 41 are distributed in the same straight line and are installed on the base 3, and the first moving blocks 42 are respectively connected to the nuts of the two screw pairs 41. The screws rotate to drive the nuts to move, and the nuts drive the first moving blocks 42 to move, so that the two first moving blocks 42 can move closer and farther away under the drive of their respective screw pairs 41.

[0031] Each first moving block 42 is provided with a first clamping block 43. When the two first moving blocks 42 approach each other, the first clamping blocks 43 on the two first moving blocks 42 clamp the top cover 1 from the left and right sides. When the two first moving blocks 42 move away from each other, the top cover 1 is released.

[0032] A driving shaft 44 is also provided on the base 3, and the driving shaft 44 is located between the opposite ends of the two screws, that is, the two screws are in the same horizontal plane and perpendicular to the driving shaft 44, and the two screws are located on both sides of the driving shaft 44. A driving bevel gear 45 is provided on the driving shaft 44, and the opposite ends of the two screw pairs 41 are respectively provided with driven bevel gears 46. The driving bevel gear 45 and the two driven bevel gears 46 are matched with each other, so that the driving shaft 44 drives the driving bevel gear 45 to rotate by rotating, and the driving bevel gear 45 drives the two driven bevel gears 46 to rotate at the same time. Since the two driven bevel gears 46 are relatively arranged and mesh with the same driving bevel gear 45, the rotation directions of the two driven bevel gears 46 are opposite, so that the rotation directions of the two screws are opposite, thereby realizing that the first clamping block 43 moves closer to or away from each other with the corresponding first moving block 42.

[0033] The second clamping structure 5 includes a bidirectional screw 51, which includes two threaded parts with opposite rotation directions. Each of the two threaded parts is equipped with a second moving block 52, so that the two second moving blocks 52 are relatively displaced by the rotation of the bidirectional screw 51. Each second moving block 52 is provided with a second clamping block 53, which ultimately enables the second clamping blocks 53 to move closer to or away from each other.

[0034] It should be noted that the screw pair 41 and the drive shaft 44 of the first clamping structure 4 are staggered in a cross shape, while the bidirectional screw 51 of the second clamping structure 5 is parallel to the drive shaft 44, so that the ends of the drive shaft 44 and the bidirectional screw 51 are on the same side. Therefore, it is very convenient to manually operate the drive shaft 44 and the bidirectional screw 51 to rotate, and there is no need to go around to the other side for separate operations.

[0035] Furthermore, the base 3 is provided with a third clamping block 54 between the two second clamping blocks 53, so that the two second clamping blocks 53 can respectively form a clamp with the third clamping block 54, that is, the third clamping block 54 is fixed on the base 3 as a common clamping block, and the two second clamping blocks 53 respectively form a clamp with the third clamping block 54 from both sides, thereby achieving simultaneous clamping of two top covers 1 distributed front and back.

[0036] Furthermore, in this embodiment, the first clamping block 43 and the second clamping block 53 are both block structures, and the side of each block structure is provided with a step surface 68, and the step surface 68 includes a horizontal surface 681 and a vertical surface 682. The horizontal surface 681 is used to abut against the bottom surface of the top cover 1 and support the top cover 1, and the vertical surface 682 is used to abut against the side of the top cover 1, thereby clamping the top cover 1.

[0037] Furthermore, both sides of the first clamping block 43 and the second clamping block 53 are provided with step surfaces 68 , so that the first clamping block 43 and the second clamping block 53 are universal and interchangeable, and both sides can clamp the top cover 1 .

[0038] Furthermore, the first clamping block 43 and the second clamping block 53 are both fixed to the corresponding moving blocks by fasteners, thereby realizing detachable installation of the clamping blocks.

[0039] Furthermore, the number of first clamping blocks 43 and second clamping blocks 53 can be multiple. In this embodiment, the top cover 1 has two pairs of first clamping blocks 43 and second clamping blocks 53, each pair having two first clamping blocks 43 and two second clamping blocks 53, the two first clamping blocks 43 being arranged opposite each other, and the two second clamping blocks 53 being also arranged opposite each other; there are also two third clamping blocks 54, which are installed between the two second clamping blocks 53 of each pair, preferably in the middle between the two second clamping blocks 53.

[0040] Further, if Figure 2As shown, a groove body 61 is provided on the positioning seat 6, a positioning boss 62 is located in the center of the groove body 61, and a positioning groove 63 is formed between the positioning boss 62 and the groove body 61. Figure 7 As shown, a protrusion 12 is provided on the bottom surface of the top cover 1 along the edge of the mounting hole 11. When the top cover 1 is clamped by the first clamping structure 4 and the second clamping structure 5, the protrusion 12 is embedded in the positioning groove 63 to form a limiting fit. At this time, the positioning boss 62 is located in the mounting hole 11, and the explosion-proof valve 2 is placed on the positioning boss 62.

[0041] Further, if Figure 5 As shown, an air hole 64 is provided on the top surface of the positioning boss 62, and an exhaust channel 67 is provided on the base 3. One end of the exhaust channel 67 is connected to an external vacuum pumping device, and the other end is connected to the air hole 64. The external vacuum pumping device vacuums the air hole 64 through the exhaust channel 67, so that the explosion-proof valve 2 is adsorbed on the positioning boss 62, thereby fixing the explosion-proof valve 2 to prevent the explosion-proof valve 2 from shifting during the welding process.

[0042] Furthermore, in this embodiment, the number of the positioning seats 6 is the same as the number of the top covers 1 , for example, two.

[0043] Furthermore, the base 3 includes a base 31 and a mounting base 32 connected to the top of the base 31, the first clamping structure 4 and the second clamping structure 5 are mounted on the base 31, the mounting base 32 is provided with an avoidance groove 34, the first clamping block 43 and the second clamping block 53 extend out of the avoidance groove 34 for clamping, the mounting base 32 is provided with a mounting groove 33, and the bottom of the positioning seat 6 is provided with a positioning protrusion 65 embedded in the mounting groove 33, so that the positioning seat 6 can be stably mounted on the mounting base 32, as shown in FIG. Figure 6 As shown, a connecting hole 66 is provided on the positioning protrusion 65 to connect the air extraction channel 67 and the air hole 64 so as to realize vacuum extraction of the air hole 64 .

[0044] In addition, the exhaust channel 67 is opened on the bottom surface of the mounting groove 33. At this time, the exhaust channel 67 forms a long groove structure in the mounting groove 33, and the positioning protrusion 65 of the positioning seat 6 covers the groove structure to form a complete and closed exhaust channel 67. Therefore, there is no need to open the exhaust channel 67 on the base 31, reducing the processing difficulty of the exhaust channel 67.

[0045] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A universal explosion-proof valve welding fixture, used for positioning a top cover (1) and an explosion-proof valve (2), wherein the top cover (1) is provided with a mounting hole (11) for fitting the explosion-proof valve (2), characterized in that: The invention comprises a base (3), wherein the base (3) is provided with two first clamping structures (4) for clamping the left and right sides of the top cover (1), respectively, and a relatively displaceable and adjustable setting is formed between the two first clamping structures (4); the base (3) is also provided with two second clamping structures (5) for clamping the front and rear sides of the top cover (1), respectively, and a relatively displaceable and adjustable setting is formed between the two second clamping structures (5); the base (3) is also provided with a positioning seat (6), and the positioning seat (6) is provided with a positioning boss (62) for forming a limit with the mounting hole (11) of the top cover (1).

2. A universal explosion-proof valve welding tooling device according to claim 1, characterized in that: The first clamping structure (4) comprises two screw pairs (41) distributed in the same straight line, the two screw pairs (41) are respectively mounted with a first moving block (42), the two first moving blocks (42) are relatively displaced by the rotation of the corresponding screw pair (41), each first moving block (42) is provided with a first clamping block (43), the base (3) is provided with a driving shaft (44) between the ends of the two screw pairs (41), the driving shaft (44) is provided with a driving bevel gear (45), and the opposite ends of the two screw pairs (41) are respectively provided with a driven bevel gear (46) meshing with the driving bevel gear (45).

3. A universal explosion-proof valve welding tooling device according to claim 2, characterized in that: The second clamping structure (5) comprises a bidirectional screw (51), two second moving blocks (52) are mounted on the bidirectional screw (51), the two second moving blocks (52) are relatively displaced by the rotation of the bidirectional screw (51), and each second moving block (52) is provided with a second clamping block (53).

4. A universal explosion-proof valve welding tooling device according to claim 3, characterized in that: The base (3) is provided with a third clamping block (54) between the two second clamping blocks (53), so that the two second clamping blocks (53) can respectively clamp with the third clamping block (54), thereby achieving simultaneous clamping of two top covers (1) distributed front to back.

5. The universal explosion-proof valve welding tooling device according to claim 1, characterized in that: A groove body (61) is provided on the surface of the positioning seat (6), the positioning boss (62) is located in the center of the groove body (61), and a positioning groove (63) is formed between the positioning boss (62) and the groove body (61).

6. The universal explosion-proof valve welding tooling device according to claim 5, characterized in that: An air hole (64) is provided on the top surface of the positioning boss (62), and an air extraction channel (67) is provided on the base (3). The air extraction channel (67) is connected to the air hole (64) and is connected to an external vacuum extraction device.

7. The universal explosion-proof valve welding tooling device according to claim 6, characterized in that: The base (3) comprises a base (31) and a mounting seat (32) connected to the top of the base (31); the first clamping structure (4) and the second clamping structure (5) are mounted on the base (31); a mounting groove (33) is provided on the mounting seat (32); a positioning protrusion (65) embedded in the mounting groove (33) is provided at the bottom of the positioning seat (6); and a connecting hole (66) connected to the exhaust channel (67) and the air hole (64) is provided on the positioning protrusion (65).

8. The universal explosion-proof valve welding tooling device according to claim 3, characterized in that: The side surfaces of the first clamping block (43) and the second clamping block (53) are provided with step surfaces (68), and the step surfaces (68) include a horizontal surface (681) and a vertical surface (682), the horizontal surface (681) is used to abut against the bottom surface of the top cover (1) and support the top cover (1), and the vertical surface (682) is used to abut against the side surface of the top cover (1).

9. The universal explosion-proof valve welding tooling device according to claim 8, characterized in that: Both sides of the first clamping block (43) and the second clamping block (53) are provided with step surfaces (68).

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