Double gun quick release welding fixture

Abstract

The present invention relates to a double-gun quick-release welding fixture, which includes a spring clamping head, a connecting seat sleeved outside the spring clamping head, and a plurality of clamping blocks evenly distributed on the connecting seat. The spring clamping head is provided with a telescopic rod that can be displaced back and forth along its axial direction to cause the spring clamping head to open and close. The connecting seat is outer-mounted with a driving block that can rotate along the circumference of the connecting seat. A linkage component is provided between the driving block and the clamping block, which causes the clamping block to clamp or separate when the driving block rotates. An elastic limiting member is provided between the driving block and the spring clamping head, which causes the spring clamping head to be axially limited in the connecting seat or to be separated from the connecting seat.

Description

Technical Field

[0001] The invention relates to a clamp, in particular to a double-gun quick-release welding clamp. Background Art

[0002] During the auto parts manufacturing process, welding of parts requires clamping the parts to be welded together using a dedicated fixture. For fixtures with multiple clamping ends, disassembly, assembly, clamping, or separation of parts requires multiple steps. This not only wastes processing time, but also results in varying locking forces when manually tightening the multiple clamping ends individually, making it impossible to guarantee consistent locking force across all clamping ends. Consequently, the clamped parts cannot remain completely flat on the fixture, resulting in varying degrees of error during welding, and the stability and strength of the weld cannot be guaranteed. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a double-gun quick-release welding fixture which is easy to assemble and disassemble, can maintain consistent locking forces at each clamping end, and has a simple structure.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a double-gun quick-release welding fixture, characterized in that it includes a spring clamping head, a connecting seat arranged outside the spring clamping head, and a plurality of clamping blocks evenly distributed on the connecting seat, the spring clamping head is provided with a telescopic rod that can be moved back and forth along its axial direction to cause the spring clamping head to open and close, the connecting seat is outerly provided with a driving block that can rotate along the circumferential direction of the connecting seat, a linkage component is provided between the driving block and the clamping block, which causes the clamping block to clamp or separate when the driving block rotates, and an elastic limiting member is provided between the driving block and the spring clamping head to cause the spring clamping head to be axially limited in the connecting seat or to be separated from the connecting seat.

[0005] Using this technical solution, when clamping an accessory to be welded, the accessory is placed on the clamping device, and the drive block is rotated. The drive block drives each clamping block simultaneously, causing each clamping block to clamp with a consistent clamping force. Simultaneously, the telescopic rod is driven, releasing the spring clamping head, allowing the spring clamping head to clamp the accessory. This arrangement maintains a consistent clamping force at each clamping end, allowing the clamped accessory to remain stable in the clamping device, facilitating stability and securement during welding. The provision of an elastic limiter facilitates assembly and disassembly of the clamping device.

[0006] The present invention is further configured as follows: the clamping block includes a hollow tube body installed on the connecting seat, the other end of the hollow tube body relative to the other end connected to the connecting seat is a clamping opening that can be opened and closed, and a plurality of elastic opening grooves are provided on the outer peripheral surface of the clamping opening, the inner wall of the clamping opening is a conical surface, and is connected to the inner wall of the hollow tube body; the linkage component includes a pushing column located in the hollow tube body and can move back and forth along its axial direction, and a steel ball linked with the pushing column and located at the conical surface of the clamping opening to resist the clamping opening, thereby causing the clamping opening to open and close, and the end face of the driving block located at the pushing column is a first inclined surface adapted to the pushing column.

[0007] With this technical solution, when the drive block rotates, its first inclined surface comes into contact with the inclined surface of the push column, thereby driving the push column to rise and fall within the clamping block. During the rise, the steel ball moves toward the clamping opening of the clamping block, causing the clamping opening to open and release the clamping block. Conversely, when the push column descends within the clamping block, the steel ball releases the interference with the clamping opening, returning the clamping opening to its clamped state. This simple structure and easy operation.

[0008] The present invention is further configured as follows: an inserting groove is provided on the outer peripheral surface of the spring clamping head corresponding to the elastic limiting member, and the elastic limiting member includes a limit pin located between the driving block and the spring clamping head and capable of reciprocating toward the inserting groove of the spring clamping head. The limit pin includes a driving part and a limiting part, and the end of the driving part facing the driving block is a second inclined surface, and the driving block is provided with a third inclined surface adapted to the second inclined surface. A reset spring is provided between the connecting seat and the driving part of the limit pin, one end of which contacts the driving part and the other end contacts the connecting seat.

[0009] With the above technical solution, when the second inclined surface of the limit pin is in contact with the third inclined surface of the drive block, the limit pin overcomes the spring force of the return spring and moves toward the spring clamping head. When the limit portion of the limit pin enters the insertion groove of the spring clamping head, the spring clamping head is axially limited and can be stably located in the connecting seat. When the limit pin and the spring clamping head are to be disassembled, the drive block is rotated to release the interference with the limit pin. The limit pin is reset by the return spring, and its limit portion is disengaged from the insertion groove of the spring clamping head.

[0010] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0012] Figure 2 for Figure 1 AA cross-sectional diagram;

[0013] Figure 3 for Figure 1 BB cross-sectional diagram;

[0014] Figure 4 Schematic diagram of the structure of the clamping block in this example of the present invention. DETAILED DESCRIPTION

[0015] like Figure 1 — Figure 4 The double-gun quick-release welding fixture shown includes a spring clamping head 1, a connecting seat 2 sleeved on the outside of the spring clamping head 1, and a plurality of clamping blocks 3 evenly distributed on the connecting seat 2. The spring clamping head 1 is provided with a telescopic rod 4 that can be moved back and forth along its axial direction to cause the spring clamping head 1 to open and close. The connecting seat 2 is provided with a driving block 5 that can rotate circumferentially along the connecting seat 2. A linkage assembly 6 is provided between the driving block 5 and the clamping block 3 to cause the clamping block 3 to clamp or separate when the driving block 5 rotates. An elastic limiting member 7 is provided between the driving block 5 and the spring clamping head 1 to cause the spring clamping head 1 to be axially limited in the connecting seat 2 or to be separated from the connecting seat 2. In the above scheme, when it is necessary to clamp the accessories to be welded, the accessories are placed on the clamping device, and then the driving block 5 is rotated. The driving block 5 drives each clamping block 3 at the same time, causing each clamping block 3 to clamp, and the clamping locking force is consistent. At the same time, the telescopic rod 4 is actuated, releasing its interference with the spring clamping head 1, allowing the spring clamping head 1 to clamp the accessory. The telescopic rod 4 can be actuated by an external pneumatic or hydraulic cylinder. This arrangement maintains a consistent clamping force at each clamping end, allowing the clamped accessory to be stably positioned within the fixture, ensuring stability and securement during welding. The provision of the elastic stopper 7 facilitates assembly and disassembly of the clamping device.

[0016] In this embodiment of the present invention, the clamping block 3 includes a hollow tube mounted on the connecting base 2. The other end of the hollow tube, opposite to the end connected to the connecting base 2, has a closable clamping opening 31. A plurality of elastic opening grooves 311 are formed on the outer circumference of the clamping opening 31. The inner wall of the clamping opening 31 has a tapered surface 312 that engages with the inner wall of the hollow tube. The linkage assembly 6 includes a push post 61 within the hollow tube that can reciprocate along the axial direction thereof, and a steel ball 62 that is linked to the push post 61 and located on the tapered surface 312 of the clamping opening 31 to abut against the clamping opening 31, thereby causing the clamping opening 31 to open and close. The end surface of the driving block 5 located at the push post 61 is a first inclined surface 51 that is adapted to the push post 61. The first inclined surface 51 has a highest point and a lowest point. When the drive block 5 rotates, the first inclined surface 51 on the drive block 5 comes into contact with the inclined surface of the push column 61, thereby driving the push column 61 to rise and fall within the clamping block 3. During the rise, the steel ball 62 is moved toward the clamping opening 31 of the clamping block 3, causing the clamping opening 31 to open and engage the clamping block 3. Conversely, the push column 61 descends within the clamping block 3, and the steel ball 62 releases the interference with the clamping opening 31, returning the clamping opening 31 to its clamped state. The structure is simple and easy to operate.

[0017] An inserting groove 11 is provided on the outer peripheral surface of the elastic limiting member 7 corresponding to the spring clamping head 1 in the embodiment of the present invention. The elastic limiting member 7 includes a limiting pin located between the driving block 5 and the spring clamping head 1 and can move back and forth toward the inserting groove 11 of the spring clamping head 1. The limiting pin includes a driving part 71 and a limiting part 72. The end of the driving part 71 facing the driving block 5 is a second inclined surface 711. The driving block 5 is provided with a third inclined surface 52 adapted to the second inclined surface 711. A reset spring 73 is provided between the connecting seat 2 and the driving part 71 of the limiting pin, one end of which contacts the driving part 71 and the other end contacts the connecting seat 2. When the second inclined surface 711 of the limit pin is in contact with the third inclined surface 52 on the driving block 5, the limit pin overcomes the spring force of the return spring 73 and moves toward the spring clamping head 1. When the limit portion 72 of the limit pin enters the insertion groove 11 of the spring clamping head 1, the axial direction of the spring clamping head 1 is limited and can be stably located in the connecting seat 2. When the limit pin and the spring clamping head 1 are to be disassembled, the driving block 5 is rotated to release the interference with the limit pin. The limit pin is reset by the return spring 73, so that the limit portion 72 is disengaged from the insertion groove 11 of the spring clamping head 1.

Claims

1. Double-gun quick-release welding fixture, characterized by: The invention comprises a spring clamping head, a connecting seat sleeved outside the spring clamping head and a plurality of clamping blocks evenly distributed on the connecting seat, wherein the spring clamping head is provided with a telescopic rod which can be moved back and forth along its axial direction to cause the spring clamping head to open and close, and the outer sleeve of the connecting seat is provided with a driving block which can rotate along the circumference of the connecting seat, and a linkage component is provided between the driving block and the clamping block to clamp or separate the clamping block when the driving block rotates, and an elastic limiting member is provided between the driving block and the spring clamping head to cause the spring clamping head to be axially limited in the connecting seat or to be separated from the connecting seat, and the clamping block comprises a plurality of elastic limiting members installed on the connecting seat. The hollow tube body on the connecting seat has a clamping opening that can be opened and closed at the other end of the hollow tube body relative to the end connected to the connecting seat. A number of elastic opening grooves are provided on the outer peripheral surface of the clamping opening. The inner wall of the clamping opening is a conical surface and is connected to the inner wall of the hollow tube body. The linkage component includes a pushing column located in the hollow tube body and can move back and forth along its axial direction, and a steel ball that is linked with the pushing column and is located at the conical surface of the clamping opening to resist the clamping opening, thereby causing the clamping opening to open and close. The end face of the driving block located at the pushing column is a first inclined surface that is adapted to the pushing column.

2. The dual-gun quick-release welding fixture according to claim 1, characterized in that: The spring clamping head is provided with an inserting groove on the outer peripheral surface of the elastic limit piece corresponding to the spring clamping head. The elastic limit piece includes a limit pin located between the driving block and the spring clamping head and can move back and forth toward the inserting groove of the spring clamping head. The limit pin includes a driving part and a limiting part. The end of the driving part facing the driving block is a second inclined surface, and the driving block is provided with a third inclined surface adapted to the second inclined surface. A reset spring is provided between the connecting seat and the driving part of the limit pin, one end of which contacts the driving part and the other end contacts the connecting seat.

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