A wheel bolt seat spot welding die

Abstract

This utility model discloses a spot welding mold for wheel rim bolt seats, including a mold body. A central column is fixed at the center of the mold body. A first cylinder is installed at the top of the central column, and a pusher clamp is installed at the output end of the first cylinder. A bolt seat is arranged inside the pusher clamp. A fifth cylinder is installed on the outer walls of both sides of the pusher clamp, and the output end of the fifth cylinder extends into the interior of the pusher clamp and is equipped with an arc-shaped clamping block. A welding seat is arranged on the top of the mold body on one side of the pusher clamp, and a welding fixture is arranged below the welding seat. An arc-shaped movable toothed plate is arranged inside the welding fixture. A micro stepper motor is installed on the top of the welding fixture, and a small gear is installed at the output end of the micro stepper motor. A welding head is installed on the inner wall of the arc-shaped movable toothed plate. This utility model can uniformly weld a ring of the bolt seat, improving the firmness of the connection between the bolt seat and the wheel rim.

Description

Technical Field

[0001] This utility model relates to the field of wheel rim processing technology, specifically a wheel rim bolt seat spot welding mold. Background Technology

[0002] The wheel rim, also known as the wheel hub, is the component on the periphery of the wheel that mounts and supports the tire. Together with the spokes, it forms the core structure of the wheel, primarily responsible for securing the tire and transmitting load. The bolt seats on the wheel rim are functional parts within the rim structure used to install and position bolts or nuts, ensuring that the wheel is correctly secured to the axle via the bolt system.

[0003] In specific wheel rim structures such as tractor drive wheels, bolt seats are fixed to the inner surface of the rim by welding, with their bottom surface welded to the rim. A rim bolt seat spot welding mold is a specialized tooling device for welding rim bolt seats; its core function is to achieve precise positioning of the bolt seats and ensure welding quality. However, conventional spot welding methods struggle to weld around the entire circumference of the bolt seat, especially at the lower connection point, making even welding difficult and affecting the strength of the connection between the bolt seat and the rim. Therefore, improvements are urgently needed. Utility Model Content

[0004] The purpose of this utility model is to provide a spot welding mold for wheel rim bolt seats to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spot welding mold for wheel rim bolt seats, comprising a mold body, a central column fixed at the center of the mold body, a wheel rim body disposed inside the mold body outside the central column, a first cylinder mounted on the top of the central column, and a pusher clamp mounted on the output end of the first cylinder, a bolt seat disposed inside the pusher clamp, a fifth cylinder mounted on the outer walls of both sides of the pusher clamp, and an arc-shaped clamping block mounted on the output end of the fifth cylinder extending into the interior of the pusher clamp, a welding seat disposed on the top of the mold body on one side of the pusher clamp, and a welding fixture disposed below the welding seat, an arc-shaped movable toothed plate disposed inside the welding fixture, a micro stepper motor mounted on the top of the welding fixture, and a pinion gear mounted on the output end of the micro stepper motor, the pinion gear meshing tightly with the arc-shaped movable toothed plate, and a welding head mounted on the inner wall of the arc-shaped movable toothed plate.

[0006] Preferably, a fourth cylinder is installed on the outer wall of the mold body, and the output end of the fourth cylinder extends into the interior of the mold body and is fixed with an arc-shaped clamping plate.

[0007] Preferably, a second cylinder is installed at the corner of the top of the mold body, and the output end of the second cylinder is fixedly connected to the welding seat. A third cylinder is installed at the top of the welding seat, and the output end of the third cylinder is fixedly connected to the welding tool, so as to facilitate the adjustment of the position and height of the welding tool.

[0008] Preferably, the welding tool is located on the inner side of the inner wall of the rim body, and the welding tool does not interfere with the inner wall of the rim body.

[0009] Preferably, both the welding fixture and the arc-shaped movable toothed plate are annular structures with open lower ends, and the arc-shaped movable toothed plate is embedded in the inner wall of the welding fixture.

[0010] Preferably, the pusher clamp has a U-shaped structure, and an arc-shaped positioning groove is provided at the center of the surface of the pusher clamp.

[0011] Preferably, the welding head is provided in three sets, and one end of the welding head is inclined toward the inner wall of the rim body, which facilitates precise welding at the connection between the bolt seat and the rim.

[0012] Preferably, a first rubber friction sheet is adhered to the inner surface of the arc-shaped clamping plate, and a second rubber friction sheet is adhered to the inner surface of the arc-shaped clamping block, which increases the friction force and reduces the wear on the wheel rim and bolt seat.

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

[0014] The rim body is placed inside the mold body, and the bolt seat is placed in the arc-shaped positioning groove inside the pusher clamp. The fifth cylinder drives the arc-shaped clamp to move horizontally, holding and fixing the bolt seat. The first cylinder drives the pusher clamp to move horizontally, pushing the pusher clamp towards the inner wall of the rim body, so that the welding end of the bolt seat is close to the inner wall of the rim body. The second cylinder drives the welding fixture to move horizontally above the welding point. The third cylinder drives the welding fixture to move downward to the outside of the bolt seat. The arc-shaped movable toothed plate is located on the outside of the bolt seat. The welding head welds and fixes the bolt seat to the rim body. The micro stepper motor drives the pinion to rotate, so that the arc-shaped movable toothed plate rotates left and right along the welding fixture, so that the welding head rotates to the bottom of the bolt seat, thereby uniformly welding one circle of the bolt seat, thus improving the firmness of the connection between the bolt seat and the rim. In addition, the mold adopts a multi-station simultaneous welding method, which improves the welding efficiency. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is an enlarged cross-sectional view of the welding tool of this utility model.

[0018] Figure 4 This is a front enlarged structural diagram of the pusher clamp of this utility model;

[0019] Figure 5 This is a front view schematic diagram of the appearance structure of this utility model.

[0020] In the diagram: 1. Mold body; 2. Central column; 3. First cylinder; 4. Pushing fixture; 5. Rim body; 6. Second cylinder; 7. Welding seat; 8. Third cylinder; 9. Welding tool; 10. Fourth cylinder; 11. Arc-shaped clamping plate; 12. First rubber friction plate; 13. Bolt seat; 14. Arc-shaped movable toothed plate; 15. Micro stepper motor; 16. Pinion; 17. Welding head; 18. Arc-shaped positioning groove; 19. Fifth cylinder; 20. Arc-shaped clamping block; 21. Second rubber friction plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 An embodiment of this utility model is provided: a rim bolt seat spot welding mold, including a mold body 1, a central column 2 fixed at the center of the mold body 1, a rim body 5 arranged inside the mold body 1 outside the central column 2, a first cylinder 3 installed at the top of the central column 2, and a pusher clamp 4 installed at the output end of the first cylinder 3, a bolt seat body 13 arranged inside the pusher clamp 4, a fifth cylinder 19 installed on the outer walls on both sides of the pusher clamp 4, and the output end of the fifth cylinder 19 extends into the interior of the pusher clamp 4 and is equipped with an arc-shaped clamping block 20;

[0024] Specifically, the bolt seat 13 is then placed in the arc-shaped positioning groove 18 inside the pusher clamp 4. The fifth cylinder 19 drives the arc-shaped clamp 20 to move horizontally, thereby holding and fixing the bolt seat 13. The first cylinder 3 drives the pusher clamp 4 to move horizontally, pushing the pusher clamp 4 towards the inner wall of the rim body 5, so that the welding end of the bolt seat 13 is in close contact with the inner wall of the rim body 5.

[0025] Next, the second cylinder 6 drives the welding fixture 9 to move horizontally above the welding point, and the third cylinder 8 drives the welding fixture 9 to move downward to the outside of the bolt seat 13. The arc-shaped movable toothed plate 14 is located on the outside of the bolt seat 13, and the welding head 17 welds and fixes the bolt seat 13 to the rim body 5. During the welding process, the micro stepper motor 15 drives the pinion 16 to rotate, so that the arc-shaped movable toothed plate 14 rotates left and right along the welding fixture 9, so that the welding head 17 rotates to the bottom of the bolt seat 13, thereby uniformly welding a circle of the bolt seat 13, thereby improving the firmness of the connection between the bolt seat and the rim.

[0026] A welding seat 7 is provided on the top of the mold body 1 on one side of the pusher clamp 4, and a welding tool 9 is provided below the welding seat 7. An arc-shaped movable toothed plate 14 is provided inside the welding tool 9. A micro stepper motor 15 is installed on the top of the welding tool 9, and a pinion 16 is installed at the output end of the micro stepper motor 15. The pinion 16 meshes tightly with the arc-shaped movable toothed plate 14, and a welding head 17 is installed on the inner wall of the arc-shaped movable toothed plate 14.

[0027] A fourth cylinder 10 is installed on the outer wall of the mold body 1, and the output end of the fourth cylinder 10 extends into the interior of the mold body 1 and is fixed with an arc-shaped clamping plate 11.

[0028] Specifically, the rim body 5 is placed inside the mold body 1, and the fourth cylinder 10 drives the arc-shaped clamping plate 11 to move horizontally. The arc-shaped clamping plate 11 holds and fixes the rim body 5 from four directions of the pusher clamp.

[0029] A second cylinder 6 is installed at the corner of the top of the mold body 1, and the output end of the second cylinder 6 is fixedly connected to the welding seat 7. A third cylinder 8 is installed at the top of the welding seat 7, and the output end of the third cylinder 8 is fixedly connected to the welding tool 9.

[0030] The welding tool 9 is located on the inner side of the inner wall of the rim body 5, and the welding tool 9 does not interfere with the inner wall of the rim body 5.

[0031] Both the welding fixture 9 and the arc-shaped movable toothed plate 14 are annular structures with open lower ends, and the arc-shaped movable toothed plate 14 is embedded in the inner wall of the welding fixture 9.

[0032] The pusher clamp 4 has a U-shaped structure, and an arc-shaped positioning groove 18 is provided at the center of the surface of the pusher clamp 4;

[0033] There are three sets of welding heads 17, and one end of the welding head 17 is inclined toward the inner wall of the rim body 5;

[0034] Furthermore, the mold adopts a multi-station simultaneous welding method, which improves welding efficiency;

[0035] A first rubber friction plate 12 is adhered to the inner surface of the arc-shaped clamping plate 11, and a second rubber friction plate 21 is adhered to the inner surface of the arc-shaped clamping block 20.

[0036] In this embodiment, the following steps are taken: First, the rim body 5 is placed inside the mold body 1. The fourth cylinder 10 drives the arc-shaped clamping plate 11 to move horizontally, and the arc-shaped clamping plate 11 holds and fixes the rim body 5 from four directions of the pusher clamp. Then, the bolt seat 13 is placed in the arc-shaped positioning groove 18 inside the pusher clamp 4. The fifth cylinder 19 drives the arc-shaped clamping block 20 to move horizontally, holding and fixing the bolt seat 13. The first cylinder 3 drives the pusher clamp 4 to move horizontally, pushing the pusher clamp 4 towards the inner wall of the rim body 5, so that the welding end of the bolt seat 13 is tightly attached to the inner wall of the rim body 5. Then, the second cylinder 6 drives the welding fixture 9... The third cylinder 8 moves the welding fixture 9 down to the outside of the bolt seat 13, and the arc-shaped movable toothed plate 14 is located on the outside of the bolt seat 13. The welding head 17 welds and fixes the bolt seat 13 to the rim body 5. During the welding process, the micro stepper motor 15 drives the pinion 16 to rotate, so that the arc-shaped movable toothed plate 14 rotates left and right along the welding fixture 9, so that the welding head 17 rotates to the bottom of the bolt seat 13, thereby uniformly welding one circle of the bolt seat 13, which improves the firmness of the connection between the bolt seat and the rim. In addition, the mold adopts a multi-station simultaneous welding method, which improves the welding efficiency.

[0037] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A wheel bolt seat spot welding die comprising a die body (1), characterised in that, A central column (2) is fixed at the center of the mold body (1). A rim body (5) is provided inside the mold body (1) outside the central column (2). A first cylinder (3) is installed at the top of the central column (2), and a pusher clamp (4) is installed at the output end of the first cylinder (3). A bolt seat (13) is provided inside the pusher clamp (4). A fifth cylinder (19) is installed on the outer walls on both sides of the pusher clamp (4), and the output end of the fifth cylinder (19) extends into the pusher clamp (4) and is installed thereon. There is an arc-shaped clamping block (20). A welding seat (7) is provided on the top of the mold body (1) on one side of the pusher clamp (4). A welding tool (9) is provided below the welding seat (7). An arc-shaped movable toothed plate (14) is provided inside the welding tool (9). A micro stepper motor (15) is installed on the top of the welding tool (9). A pinion (16) is installed at the output end of the micro stepper motor (15). The pinion (16) meshes tightly with the arc-shaped movable toothed plate (14). A welding head (17) is installed on the inner wall of the arc-shaped movable toothed plate (14).

2. The rim bolt seat spot welding mold according to claim 1, characterized in that: A fourth cylinder (10) is installed on the outer wall of the mold body (1), and the output end of the fourth cylinder (10) extends into the interior of the mold body (1) and is fixed with an arc-shaped clamp (11).

3. The rim bolt seat spot welding mold according to claim 1, characterized in that: A second cylinder (6) is installed at the corner of the top of the mold body (1), and the output end of the second cylinder (6) is fixedly connected to the welding seat (7). A third cylinder (8) is installed at the top of the welding seat (7), and the output end of the third cylinder (8) is fixedly connected to the welding tool (9).

4. The wheel rim bolt seat spot welding mold according to claim 1, characterized in that: The welding tool (9) is located on the inner side of the inner wall of the rim body (5), and the welding tool (9) does not interfere with the inner wall of the rim body (5).

5. A spot welding mold for wheel rim bolt seats according to claim 1, characterized in that: The welding fixture (9) and the arc-shaped movable toothed plate (14) are both annular structures with open lower ends, and the arc-shaped movable toothed plate (14) is embedded in the inner wall of the welding fixture (9).

6. A spot welding mold for wheel rim bolt seats according to claim 1, characterized in that: The pusher clamp (4) has a U-shaped structure, and an arc-shaped positioning groove (18) is provided at the center of the surface of the pusher clamp (4).

7. A spot welding mold for wheel rim bolt seats according to claim 1, characterized in that: The welding head (17) is provided in three sets, and one end of the welding head (17) is inclined toward the inner wall of the rim body (5).

8. A spot welding mold for wheel rim bolt seats according to claim 2, characterized in that: The inner surface of the arc-shaped clamp (11) is covered with a first rubber friction plate (12), and the inner surface of the arc-shaped clamp (20) is covered with a second rubber friction plate (21).

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