Tooling for resistance welding

Abstract

The utility model relates to resistance processing technical field, and disclose a kind of tooling for resistance welding, including workbench, the center of workbench surface is equipped with placing groove, the surface of workbench is provided with fixed assembly, the fixed assembly includes moving frame, the surface of moving frame is equipped with through-hole, and threaded connection has screw rod in through-hole, and one end of screw rod is fixedly connected with runner, the other end of screw rod is fixedly connected with pressure plate, the surface of workbench is rotatably connected with annular, the surface of annular is hinged with traction plate.The tooling for resistance welding, through the cooperation of annular, traction plate, moving frame, the synchronous position adjustment of multiple moving frames can be realized, cooperate the arc plate of moving frame bottom surface and arc groove adaptation, the positioning requirement of different size piezoresistor can be quickly adapted, shorten the adaptation time of tooling to different specifications workpieces, improve the efficiency of change type in batch production.

Description

Technical Field

[0001] This utility model relates to the field of resistance processing technology, specifically a tooling for resistance welding. Background Technology

[0002] A varistor is a voltage-limiting protection device. Utilizing the nonlinear characteristics of a varistor, when an overvoltage occurs between the two terminals of the varistor, the varistor can clamp the voltage to a relatively fixed value, thereby protecting the downstream circuit.

[0003] According to a publicly disclosed chip welding fixture for processing thermocouples (publication number: CN216298383U), the aforementioned application utilizes accessories such as a movable plate, sliding track groove, clamping nut, threaded groove, lead screw, pressure plate, and bearing block. When the clamping nut and threaded groove are in a loose state, they can move within the sliding track groove inside the movable plate, facilitating the adjustment of the distance between the movable plate and the first and second placement grooves. This allows for clamping and fixing of thermocouples of different sizes in conjunction with the pressure plate. During the rotation of the lead screw, the bearing block can be used to adjust the pressure of the pressure plate on the workpiece, effectively ensuring that the workpiece does not shift or move during chip welding.

[0004] However, during use, the clamping and adjustment process is cumbersome, and in mass production, the operation time is long and the efficiency is low, which does not meet the needs of automated production lines. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for resistance welding to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixture for resistance welding, including a worktable, a placement groove is provided at the center of the surface of the worktable, a fixing component is provided on the surface of the worktable, the fixing component includes a movable frame, a through hole is provided on the surface of the movable frame, and a lead screw is threaded into the through hole, a rotating wheel is fixedly connected to one end of the lead screw, a pressure plate is fixedly connected to the other end of the lead screw, a ring is rotatably connected to the surface of the worktable, a traction plate is hinged to the surface of the ring, and the traction plate is hinged to the surface of the movable frame.

[0007] Preferably, an arc-shaped plate is fixedly connected to the bottom surface of the movable frame.

[0008] Preferably, a through hole is formed on the surface of the ring, and a locking bolt is threaded into the through hole.

[0009] Preferably, a T-shaped block is slidably connected inside the movable frame, and the T-shaped block is fixedly connected to the surface of the worktable.

[0010] Preferably, the inner wall of the placement groove has multiple sets of arc-shaped grooves arranged in an array.

[0011] Preferably, positioning holes are provided at all four corners of the surface of the workbench.

[0012] Compared with the prior art, the present invention provides a tooling for resistance welding, which has the following advantages:

[0013] 1. This resistance welding fixture, through the cooperation of a ring, a traction plate, and a moving frame, can achieve synchronous position adjustment of multiple moving frames. With the matching arc plate on the bottom surface of the moving frame and the arc groove, it can quickly adapt to the positioning requirements of varistors of different sizes without the need for individual adjustment of each fixed component. This shortens the adaptation time of the fixture to workpieces of different specifications and improves the changeover efficiency in mass production.

[0014] 2. This resistance welding fixture applies stable pressure to the varistor by driving a pressure plate with a lead screw. At the same time, the arc-shaped plate fits against the outer wall of the varistor to assist in positioning, avoiding workpiece displacement during welding and improving the accuracy of the welding position and the stability of the welding quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fixing component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the arc-shaped plate structure of this utility model.

[0018] In the diagram: 1. Workbench; 11. Positioning hole; 2. Placement slot; 21. Arc-shaped slot; 3. Fixing component; 31. Moving frame; 32. T-block; 33. Lead screw; 34. Rotary wheel; 35. Pressure plate; 36. Ring; 37. Traction plate; 38. Locking bolt; 4. Arc-shaped plate. Detailed Implementation

[0019] like Figures 1-3 As shown, this utility model provides a technical solution: a fixture for resistance welding, including a worktable 1. Positioning holes 11 are provided at the four corners of the surface of the worktable 1. The positioning holes 11 are used to install positioning pins to accurately position the fixture or workpiece, ensuring the accuracy of the welding position. A placement groove 2 is provided at the center of the surface of the worktable 1. The placement groove 2 is used to place the varistor to be welded. Multiple arrayed arc-shaped grooves 21 are provided on the inner wall of the placement groove 2.

[0020] A fixing component 3 is provided on the surface of the workbench 1. The fixing component 3 includes a movable frame 31. A T-shaped block 32 is slidably connected inside the movable frame 31. The T-shaped block 32 is fixedly connected to the surface of the workbench 1. The T-shaped block 32 restricts the movement direction of the movable frame 31, so that it can only slide in a specific direction on the surface of the workbench 1. A through hole is opened on the surface of the movable frame 31, and a lead screw 33 is threadedly connected in the through hole. A rotating wheel 34 is fixedly connected to one end of the lead screw 33, and a pressure plate 35 is fixedly connected to the other end of the lead screw 33. By rotating the rotating wheel 34, the lead screw 33 can be driven to rotate. Since the lead screw 33 is threadedly connected to the movable frame 31, the rotation of the lead screw 33 will be converted into its own axial movement. The pressure plate 35 fixes the workpiece and ensures that the workpiece will not be displaced during the welding process.

[0021] A ring 36 is rotatably connected to the surface of the workbench 1. A traction plate 37 is hinged to the surface of the ring 36 and is hinged to the surface of the moving frame 31. A through hole is formed on the surface of the ring 36, and a locking bolt 38 is threaded into the through hole. By rotating the ring 36, the traction plate 37 can be driven to swing, and the traction plate 37 drives the moving frame 31 to slide on the surface of the workbench 1, thereby simultaneously adjusting the position of multiple sets of moving frames 31 to meet the fixing requirements of varistors of different sizes. After the position of the ring 36 is adjusted, the locking bolt 38 can fix the ring 36 to the workbench 1 to prevent it from rotating during the welding process and ensure the stability of the fixing component 3.

[0022] An arc-shaped plate 4 is fixedly connected to the bottom surface of the movable frame 31, and the shape of the arc-shaped plate 4 is adapted to the arc-shaped groove 21. The arc-shaped plate 4 moves with the movable frame 31, thereby fitting against the outer ring wall of the varistor to accommodate the positioning of varistors of different sizes.

[0023] In this invention, during use, first, according to the size specifications of the varistor to be welded, loosen the locking bolts 38 on the surface of the ring 36 to release the ring 36 from the fixed state of the worktable 1; then rotate the ring 36, and the ring 36 drives multiple sets of moving frames 31 to slide synchronously through the surface-hinged traction plate 37. Since the moving frames 31 are slidably connected to the worktable 1 through the T-shaped block 32, the moving frames 31 will move smoothly along the direction defined by the T-shaped block 32. At the same time, the arc plate 4 on the bottom surface of the moving frame 31 will move with it until the arc surface of the arc plate 4 matches the contour of the outer ring wall of the varistor to be placed. At this time, stop rotating the ring 36 and tighten the locking bolts 38 to fix the ring 36 on the surface of the worktable 1, completing the positioning of the moving frame 31. Next, place the varistor to be welded smoothly into the placement groove 2 in the center of the worktable 1, ensuring that the bottom of the varistor is in contact with the inner wall of the placement groove 2;

[0024] Then, rotate the rollers 34 on the surface of each set of moving frames 31 respectively. The rollers 34 drive the lead screw 33 to rotate in the through hole of the moving frame 31. Since the lead screw 33 is threadedly engaged with the moving frame 31, the rotation of the lead screw 33 is converted into axial movement, which pushes the pressure plate 35 at its end to gradually approach the outer wall of the varistor. Continue to rotate the rollers 34 until the pressure plate 35 tightly presses against the varistor and the varistor has no loosening or displacement in the placement groove 2, thus completing the fixing of the varistor.

[0025] After welding is completed, rotate the wheel 34 in the opposite direction to disengage the pressure plate 35 from the varistor, then loosen the locking bolt 38 and adjust the position of the moving frame 31 to remove the welded varistor, thus completing one welding operation.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A fixture for resistance welding, comprising a worktable (1), characterized in that: A placement groove (2) is provided at the center of the surface of the workbench (1). A fixing component (3) is provided on the surface of the workbench (1). The fixing component (3) includes a moving frame (31). A through hole is provided on the surface of the moving frame (31), and a lead screw (33) is threaded into the through hole. A rotating wheel (34) is fixedly connected to one end of the lead screw (33), and a pressure plate (35) is fixedly connected to the other end of the lead screw (33). A ring (36) is rotatably connected to the surface of the workbench (1). A traction plate (37) is hinged to the surface of the ring (36), and the traction plate (37) is hinged to the surface of the moving frame (31).

2. The fixture for resistance welding according to claim 1, characterized in that: An arc-shaped plate (4) is fixedly connected to the bottom surface of the movable frame (31).

3. The fixture for resistance welding according to claim 1, characterized in that: The ring (36) has a through hole on its surface, and a locking bolt (38) is threaded into the through hole.

4. The fixture for resistance welding according to claim 1, characterized in that: The movable frame (31) has a T-shaped block (32) slidably connected inside, and the T-shaped block (32) is fixedly connected to the surface of the workbench (1).

5. The fixture for resistance welding according to claim 1, characterized in that: The inner wall of the placement groove (2) has multiple sets of arrayed arc-shaped grooves (21).

6. The fixture for resistance welding according to claim 1, characterized in that: Positioning holes (11) are provided at the four corners of the surface of the workbench (1).

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