Fixture for welding explosion-proof valve

Abstract

The utility model provides a fixture for welding an explosion-proof valve, which comprises a base frame provided with at least one welding station area used for assembling a battery cover plate; the pressing piece is arranged corresponding to the welding station area and is used for fixing the battery cover plate; the pressing piece comprises at least two pressing claws, and the pressing claws are rotationally installed on the base frame and located on at least one side of the welding station area corresponding to the pressing claws. The clamp for welding the anti-explosion valve further comprises a driving piece used for driving the pressing claw to be switched between the opening state and the pressing state in a rotating mode. When the pressing claws are in the open state, the projections of the pressing claws in the direction perpendicular to the welding station area are located outside the welding station area. The pressing claw can be arranged at the end part in the length direction of the battery cover plate and the side part in the width direction of the battery cover plate, so that the specific position of the pressing claw in the length direction of the battery cover plate can be correspondingly arranged according to the specific position of the anti-explosion valve, and the battery cover plate can be better pressed so as to prevent the battery cover plate from being warped; the welding quality is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cover plate clamps, in particular to a clamp for welding an explosion-proof valve. Background Art

[0002] At present, the explosion-proof valve welding station assembles, positions and welds the explosion-proof valve and the battery cover plate by positioning the slots. Specifically, during welding, the battery cover plate is first fixed by a clamp, and then the explosion-proof valve is installed on the battery cover plate and fixed by negative pressure. Most of the existing explosion-proof valve welding clamps are single-station clamping designs, and the addition of stations such as double stations or triple stations is required due to space limitations. In order to avoid interference with the battery cover plate or the explosion-proof valve feeding assembly, the clamping structures corresponding to each station are mostly arranged at the end positions in the length direction of the battery cover plate, which makes the battery cover plate at risk of warping in the middle position, and then there is a risk of poor vacuum adsorption of the explosion-proof valve affecting the welding effect. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a clamp for welding explosion-proof valves, whose pressing claws can be set at the ends of the battery cover in the length direction and the sides of the battery cover in the width direction, which is beneficial to ensure the welding quality of the explosion-proof valve and the battery cover. At the same time, the clamp has a large range of air avoidance, ensuring the smooth loading and unloading of the battery cover.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A welding fixture for explosion-proof valves, comprising: a base frame, on which at least one welding station is provided for assembling a battery cover; a clamping member, which is provided corresponding to the welding station and is used to fix the battery cover; the clamping member comprises at least two pressing claws, which are rotatably mounted on the base frame and are located on at least one side of the welding station corresponding thereto; the welding fixture for explosion-proof valves also comprises a driving member, which is used to drive the pressing claws to switch between an open state and a clamping state in a rotating manner; when the pressing claws are in an open state, the projection of the pressing claws in a direction perpendicular to the welding station is outside the welding station.

[0006] According to a preferred embodiment, the pressure claw is provided with a fixed rotating shaft and a sliding rotating shaft, the fixed rotating shaft is parallel to the sliding rotating shaft, the pressure claw is rotatably installed on the base frame through the fixed rotating shaft, and the driving member acts on the sliding rotating shaft; the pressure claw is provided with a clamping plane, and the fixed rotating shaft is located between the sliding rotating shaft and the clamping plane; the plane where the central axis of the fixed rotating shaft and the central axis of the sliding rotating shaft are located is defined as a reference plane, and the angle between the clamping plane and the reference plane is 0°-90°.

[0007] According to a preferred embodiment, the angle between the pressing plane and the reference plane is 30°-60°.

[0008] According to a preferred embodiment, the driving member includes a driving block and an integrated board, the driving block is arranged corresponding to the pressure claw, and all the driving blocks are fixedly installed on the integrated board; a sliding groove is opened on the driving block, and the sliding shaft is slidably embedded in the sliding groove; the integrated board is adjustably arranged on the base frame.

[0009] According to a preferred embodiment, the driving member also includes a driving source, which is arranged on the base frame, and the driving source is used to drive the integrated plate to move longitudinally so that the clamping plane approaches or moves away from the welding station area in a manner that the sliding shaft slides in the sliding groove and the pressing claw rotates around the central axis of the fixed shaft.

[0010] According to a preferred embodiment, the base frame includes a longitudinal plate and a transverse plate connected to each other, and the welding station area and the pressure claws are both arranged on the transverse plate; the longitudinal plate is provided with a slide rail extending along the longitudinal direction, and the integrated board is provided with a slider adapted to the slide rail.

[0011] According to a preferred embodiment, a preload spring is provided between the base frame and the integrated plate, and the preload spring acts on the integrated plate so that the pressing plane has a movement tendency to approach the welding station area.

[0012] According to a preferred embodiment, all the pressure claws are linked together.

[0013] According to a preferred embodiment, a roller is mounted on the sliding shaft, and the roller can roll or slide on the inner wall of the sliding groove.

[0014] According to a preferred embodiment, a negative pressure hole is provided on the base frame, the negative pressure hole extends to the welding station area and is connected to the installation area of ​​the explosion-proof valve, and the negative pressure hole is externally connected to a negative pressure source.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] The pressing claw of the utility model can be arranged at the end of the battery cover in the length direction and the side of the battery cover in the width direction, so that the specific position of the pressing claw in the length direction of the battery cover can be set according to the specific position of the explosion-proof valve to better press the battery cover to avoid the battery cover from warping, which is beneficial to ensuring the welding quality of the explosion-proof valve and the battery cover; when the pressing claw is in an open state, the projection of the pressing claw in a direction perpendicular to the welding station area is outside the welding station area, which ensures that the clamp has a large range of air avoidance after the pressing claw is opened, and ensures smooth loading and unloading of the battery cover; at the same time, at least one welding station area can meet the simultaneous assembly and welding of the explosion-proof valve of at least one battery cover, which is beneficial to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a first three-dimensional structure of the explosion-proof valve welding fixture provided by an embodiment of the utility model when the pressure claw is in an open state;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of the structure at A in the middle;

[0020] Figure 3 A second three-dimensional structural schematic diagram of the explosion-proof valve welding fixture provided by the embodiment of the utility model when the pressure claw is in an open state;

[0021] Figure 4 A left-side structural schematic diagram of the clamp for welding explosion-proof valves provided in an embodiment of the utility model when the pressing claw is in an open state;

[0022] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the middle BB section;

[0023] Figure 6 A schematic diagram of the three-dimensional structure of the clamp for welding an explosion-proof valve provided in an embodiment of the utility model when the pressing claws are in a tightened state.

[0024] Icons: 10, base frame; 101, longitudinal plate; 102, transverse plate; 1021, through hole; 11, clamping member; 110, clamping claw; 1101, clamping plane; 1102, reference plane; 111, sliding shaft; 1111, roller; 112, fixed shaft; 12, base plate; 121, welding station area; 1210, negative pressure hole; 13, integrated board; 131, first board; 132, second board; 133, extension rod; 14, preload spring; 15, fork frame; 16, drive block; 161, slide groove; 171, slider; 172, slide rail; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0025] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] Please refer to Figures 1 to 6 A welding fixture for explosion-proof valves includes a base frame 10 and a clamping member 11, wherein the base frame 10 is provided with at least one welding station area 121 for assembling a battery cover (not shown in the figure); the clamping member 11 is provided corresponding to the welding station area 121 for fixing the battery cover; the clamping member 11 includes at least two pressing claws 110, which are rotatably mounted on the base frame 10 and are located on at least one side of the welding station area 121 corresponding thereto; the welding fixture for explosion-proof valves also includes a driving member for driving the pressing claws 110 to switch between an open state and a clamping state in a rotating manner; when the pressing claws 110 are in an open state, the projection of the pressing claws 110 in a direction perpendicular to the welding station area 121 is outside the welding station area 121. Figure 1As shown, there are two welding stations 121, and the two welding stations 121 are arranged at intervals along the first direction X. The pressing claw 110 here is at least one side of the welding station 121, which means that the pressing claw 110 can not only be arranged at the end of the length direction of the battery cover, but also at the side of the width direction of the battery cover, so that the specific position of the pressing claw 110 in the length direction of the battery cover can be set according to the specific position of the explosion-proof valve to better press the battery cover to avoid the battery cover from warping, ensuring the negative pressure adsorption effect of the explosion-proof valve, which is conducive to ensuring the welding quality of the explosion-proof valve and the battery cover; when the pressing claw 110 is in an open state, the projection of the pressing claw 110 in a direction perpendicular to the welding station 121 is outside the welding station 121, ensuring that the clamp has a large range of air avoidance after the pressing claw 110 is opened, ensuring the smooth loading and unloading of the battery cover; at the same time, at least one welding station 121 can meet the simultaneous assembly and welding of the explosion-proof valve of at least one battery cover, which is conducive to improving work efficiency.

[0029] In other embodiments, the number and arrangement of the welding station areas 121 can be specifically set according to processing requirements and are not limited to Figure 1 The structural form shown.

[0030] It should be noted that, in this embodiment, Figure 1 As shown, the length direction of the battery cover is the second direction Y, and the width direction of the battery cover is the first direction X.

[0031] In this embodiment, all the pressing jaws 110 are linked together. The linkage of all the pressing jaws 110 can realize synchronous movement of all the pressing jaws 110, which reduces the driving cost of the pressing jaws 110 and is conducive to improving work efficiency.

[0032] Furthermore, if Figure 2 and Figure 5 As shown, the pressing claw 110 is provided with a fixed rotating shaft 112 and a sliding rotating shaft 111, the fixed rotating shaft 112 is parallel to the sliding rotating shaft 111, the pressing claw 110 is rotatably mounted on the base frame 10 via the fixed rotating shaft 112, and the driving member acts on the sliding rotating shaft 111; the pressing claw 110 is provided with a clamping plane 1101, the fixed rotating shaft 112 is between the sliding rotating shaft 111 and the clamping plane 1101; the plane where the central axis of the fixed rotating shaft 112 and the central axis of the sliding rotating shaft 111 are located is defined as a reference plane 1102, and the angle between the clamping plane 1101 and the reference plane 1102 is α, 0°≤α≤90°. Preferably, 30°≤α≤60°, and more preferably, α=45°.

[0033] like Figure 1 , Figure 2 and Figure 6As shown, when the pressing claw 110 is in an open state, the sliding shaft 111 is at the lower side of the fixed shaft 112; when the pressing claw 110 is in a clamped state, the sliding shaft 111 is at the upper side of the fixed shaft 112; when 30°≤α≤60°, a dead point can be prevented from occurring when the pressing claw 110 is driven to rotate. At the same time, during the rotation of the pressing claw 110, the moving range of the sliding shaft 111 in the first direction X is small, which is beneficial to improving the structural compactness of the assembly of the driving member and the pressing claw 110.

[0034] In this embodiment, the driving member includes a driving block 16 and an integrated board 13. The driving block 16 is arranged corresponding to the pressing claw 110. All driving blocks 16 are fixedly mounted on the integrated board 13. A sliding groove 161 is provided on the driving block 16. The sliding shaft 111 is slidably embedded in the sliding groove 161. The integrated board 13 is adjustably arranged on the base frame 10. Figure 2 As shown, all the driving blocks 16 are integrated on the integrated board 13 to realize the linkage of the driving blocks 16, thereby realizing the linkage of the pressure claw 110. When in use, the driving block 16 drives the sliding shaft 111 to rotate around the fixed shaft 112. During the process, the sliding shaft 111 can move in the sliding groove 161 along the extension direction of the sliding groove 161 to realize the motion transmission from the translation of the driving block 16 to the rotation of the pressure claw 110.

[0035] In order to reduce friction, Figure 2 As shown, a roller 1111 is mounted on the sliding shaft 111 , and the roller 1111 can roll or slide on the inner wall of the sliding groove 161 .

[0036] In this embodiment, the driving member also includes a driving source (not shown in the figure), which is arranged on the base frame 10, and is used to drive the integrated board 13 to move longitudinally, so that the clamping plane 1101 is close to or away from the welding station area 121 in the manner that the sliding shaft 111 slides in the slide groove 161 and the pressing claw 110 rotates around the central axis of the fixed shaft 112. Optionally, the driving source includes but is not limited to a telescopic member such as a cylinder, a hydraulic cylinder or an electric push rod, or other existing mechanical structures that can drive the integrated board 13 to move longitudinally. Figure 1 As shown, in this embodiment, the longitudinal direction is the third direction Z.

[0037] Furthermore, the base frame 10 includes a longitudinal plate 101 and a transverse plate 102 connected to each other, and the welding station area 121 and the pressing claw 110 are both arranged on the transverse plate 102; a slide rail 172 extending in the longitudinal direction is arranged on the longitudinal plate 101, and a slider 171 adapted to the slide rail 172 is arranged on the integrated board 13. Preferably, the longitudinal plate 101 and the transverse plate 102 are perpendicular. In this way, the assembly of the slide rail 172 extending in the longitudinal direction is convenient, and the structure of the slider 171 and the slide rail 172 is simple, which can ensure the stability of the integrated board 13 in the longitudinal movement.

[0038] Furthermore, a preload spring 14 is provided between the base frame 10 and the integrated board 13, and the preload spring 14 acts on the integrated board 13 so that the pressing plane 1101 has a movement tendency to approach the welding station area 121. Figure 1 and Figure 6 As shown, when the pressure claw 110 is in the open state, the preload spring 14 is stretched to store energy. When the pressure claw 110 switches from the open state to the clamped state, the preload spring 14 can act on the integrated board 13 to make it move quickly upward in the longitudinal direction so that the pressure claw 110 can quickly reach the clamped state.

[0039] It should be noted that the pre-tensioning spring 14 here can realize part of the functions of the aforementioned driving source, that is, the pre-tensioning spring 14 always acts on the integrated board 13 to ensure that the pressure claw 110 always remains in a clamped state. When the pressure claw 110 needs to be switched to an open state, it is only necessary to pull the integrated board 13 downward in the longitudinal direction through external force.

[0040] In this embodiment, the integrated board 13 includes a first plate 131 and a second plate 132 connected to each other, the first plate 131 is parallel to the longitudinal plate 101, the second plate 132 is parallel to the transverse plate 102, the driving block 16 is connected to the second plate 132 through an extension rod 133, and the slider 171 is installed on the first plate 131.

[0041] In this embodiment, a through hole 1021 is formed through the transverse plate 102 , and the driving block 16 can pass through the through hole 1021 .

[0042] In this embodiment, a negative pressure hole 1210 is provided through the horizontal plate 102, and the negative pressure hole 1210 extends to the welding station area 121 and is connected to the explosion-proof valve installation area. The negative pressure hole 1210 is externally connected to a negative pressure source. Under the action of the negative pressure source, the negative pressure hole 1210 can generate negative pressure in the explosion-proof valve installation area to adsorb and fix the explosion-proof valve.

[0043] In this embodiment, a base plate 12 is provided on the horizontal plate 102, and a welding station area 121 is located on the base plate 12. The base plate 12 corresponds to the welding station area 121. When there are multiple welding station areas 121, the multiple base plates 12 can be provided independently or integrally. The method of providing the welding station area 121 on the base plate 12 facilitates the replacement of the explosion-proof valve and the battery cover.

[0044] like Figure 2 As shown, a fork frame 15 is provided on the transverse plate 102 , and the pressing claw 110 is rotatably mounted on the fork frame 15 via a fixed rotating shaft 112 .

[0045] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A welding fixture for explosion-proof valves, characterized in that: include: A base frame (10), wherein at least one welding station area (121) is provided on the base frame (10) for assembling a battery cover plate; A pressing member (11), arranged corresponding to the welding station area (121), and used for fixing the battery cover; The clamping member (11) comprises at least two clamping claws (110), and the clamping claws (110) are rotatably mounted on the base frame (10) and are located on at least one side of the corresponding welding station area (121); The explosion-proof valve welding fixture also includes a driving member for driving the pressing claw (110) to switch between an open state and a pressing state in a rotating manner; When the pressing claw (110) is in an open state, the projection of the pressing claw (110) in a direction perpendicular to the welding station area (121) is outside the welding station area (121).

2. The welding fixture for explosion-proof valve according to claim 1, characterized in that: The pressing claw (110) is provided with a fixed rotating shaft (112) and a sliding rotating shaft (111), the fixed rotating shaft (112) is parallel to the sliding rotating shaft (111), the pressing claw (110) is rotatably mounted on the base frame (10) via the fixed rotating shaft (112), and the driving member acts on the sliding rotating shaft (111); The pressing claw (110) is provided with a pressing plane (1101), and the fixed rotating shaft (112) is located between the sliding rotating shaft (111) and the pressing plane (1101); The plane where the central axis of the fixed rotating shaft (112) and the central axis of the sliding rotating shaft (111) are located is defined as a reference plane (1102), and the angle between the clamping plane (1101) and the reference plane (1102) is 0°-90°.

3. The explosion-proof valve welding fixture according to claim 2, characterized in that: The angle between the pressing plane (1101) and the reference plane (1102) is 30°-60°.

4. The explosion-proof valve welding fixture according to claim 2 or 3, characterized in that: The driving member comprises a driving block (16) and an integrated board (13); the driving block (16) is arranged corresponding to the pressing claw (110), and all the driving blocks (16) are fixedly mounted on the integrated board (13); The driving block (16) is provided with a slide groove (161), and the sliding shaft (111) is slidably embedded in the slide groove (161); The integrated board (13) is adjustably arranged on the base frame (10).

5. The explosion-proof valve welding fixture according to claim 4, characterized in that: The driving member also includes a driving source, which is arranged on the base frame (10) and is used to drive the integrated board (13) to move longitudinally so that the clamping plane (1101) approaches or moves away from the welding station area (121) in a manner in which the sliding shaft (111) slides in the sliding groove (161) and the pressing claw (110) rotates around the central axis of the fixed shaft (112).

6. The explosion-proof valve welding fixture according to claim 5, characterized in that: The base frame (10) comprises a longitudinal plate (101) and a transverse plate (102) connected to each other, and the welding station area (121) and the pressing claw (110) are both arranged on the transverse plate (102); The longitudinal plate (101) is provided with a slide rail (172) extending in the longitudinal direction, and the integrated plate (13) is provided with a sliding block (171) adapted to the slide rail (172).

7. The explosion-proof valve welding fixture according to claim 5, characterized in that: A preload spring (14) is provided between the base frame (10) and the integrated plate (13), and the preload spring (14) acts on the integrated plate (13) so that the pressing plane (1101) has a movement tendency to approach the welding station area (121).

8. The explosion-proof valve welding fixture according to claim 1, characterized in that: All the pressing claws (110) are linked together.

9. The explosion-proof valve welding fixture according to claim 4, characterized in that: The sliding shaft (111) is equipped with a roller (1111), and the roller (1111) is capable of rolling or sliding on the inner wall of the sliding groove (161).

10. The explosion-proof valve welding fixture according to claim 1, characterized in that: The base frame (10) is provided with a negative pressure hole (1210), the negative pressure hole (1210) extends to the welding station area (121) and is connected to the installation area of ​​the explosion-proof valve, and the negative pressure hole (1210) is externally connected to a negative pressure source.

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