Projection welding positioning mechanism

Abstract

The utility model relates to the technical field of projection welding positioning, in particular to a projection welding positioning mechanism which comprises a positioning plate, a moving mechanism and a positioning box, symmetrical grooves are formed in the upper side wall of the positioning plate, the moving mechanism comprises a rack, a rotating column and a gear, sliding holes are formed in the outer side walls of the grooves, a rotating frame is arranged on the rotating column, and the gear is arranged on the rotating frame. A cavity is formed in the positioning box, a two-way screw rod is arranged in the cavity, a motor is arranged on one side wall of the positioning box, symmetrical clamping blocks are arranged on the two-way screw rod, positive threads and negative threads are arranged on the two-way screw rod, and pneumatic telescopic rods are arranged at the front ends of the clamping blocks. The projection welding positioning mechanism is simple in structure and convenient to operate, welding objects of different sizes can be rapidly and accurately fixed, the efficiency and stability of the projection welding process are improved, the universality and flexibility of the projection welding positioning mechanism are improved, deviation and errors in the welding process are avoided, and the welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection welding, in particular to a projection welding positioning mechanism. Background Art

[0002] As is known to all, existing projection welding is a resistance welding method, which is a variation of spot welding. In this welding method, one or more convex points or protrusions are pre-processed on the mating surface of a workpiece, so that it contacts with the surface of another workpiece and is electrically heated, and pressure is used to form welding points at these contact points.

[0003] During the existing projection welding operation, the positioning mechanism has a complex structure and cumbersome operation, and cannot quickly and accurately fix workpieces of different sizes. This not only reduces the efficiency and stability of the projection welding process, but also easily causes deviations and errors during the welding process, which is very inconvenient and leads to high limitations in its use. For this reason, we propose a projection welding positioning mechanism. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a projection welding positioning mechanism.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a projection welding positioning mechanism, including a positioning plate, a moving mechanism and a positioning box, the side wall of the positioning plate is provided with a symmetrical groove, the moving mechanism is in the groove, the moving mechanism includes a rack, a rotating column and a gear, the rack is on the bottom wall of the groove, the gear is on the upper end of the rack and meshes with it, the rotating column passes through the gear, the outer side wall of the groove is provided with a sliding hole, the rotating column passes through the sliding hole and is slidably connected to the sliding hole, a rotating frame is provided on the rotating column, the rotating column passes through the rotating frame and is rotatably connected to it, the positioning A positioning box is at the upper end of the rotating frame, a cavity is provided in the positioning box, a bidirectional screw is provided in the cavity, a motor is provided on one side wall of the positioning box, the bidirectional screw penetrates the positioning box and is connected to the output end of the motor, a symmetrical clamping block is provided on the bidirectional screw, the bidirectional screw penetrates the clamping block, a positive thread and a negative thread are provided on the bidirectional screw, the positive thread penetrates one of the clamping blocks and is threadedly connected to it, the negative thread penetrates the other clamping block and is threadedly connected to it, the clamping block is fitted with the positioning box and is slidably connected, and a pneumatic telescopic rod is provided at the front end of the clamping block.

[0008] In order to facilitate the support and position limiting of the rotating frame, the utility model has the following improvements: symmetrical through holes are arranged on both side walls of the groove, and symmetrical auxiliary frames are arranged at both ends of the rotating frame, and the auxiliary frames pass through the through holes and are slidably connected thereto.

[0009] In order to facilitate the movement and stopping of the device, the utility model has the following improvements: universal wheels are arranged at the four corners of the bottom wall of the positioning plate, a brake assembly is arranged on the universal wheel, and the universal wheel is adapted to the brake assembly.

[0010] In order to facilitate the hand-held pulling of the device for movement, the utility model has the following improvements: a handle is provided on the front side wall of the positioning plate, and anti-slip grooves are provided on the handle.

[0011] In order to facilitate contact and clamping of the welded object, the utility model has the following improvements: a clamping plate is arranged at the front end of the pneumatic telescopic rod.

[0012] In order to prevent damage to the welded object during clamping, the utility model has the following improvements: a silicone pad is provided on the inner side wall of the clamping plate.

[0013] In order to improve its service life and supporting force, the utility model has the following improvements: the auxiliary frame is made of alloy material.

[0014] In order to conveniently control the position of the clamping plate, the utility model has the following improvements: the motor is a servo motor.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a projection welding positioning mechanism, which has the following beneficial effects:

[0017] The projection welding positioning mechanism is provided with a clamping block and a clamping plate. The motor output drives the bidirectional screw to rotate. Under the limit of the positioning box, the two clamping blocks move in opposite directions, driving the clamping plate to move, so as to clamp the welding object conveniently. The structure is simple and the operation is convenient. It can quickly and accurately fix welding objects of different sizes, and improve the efficiency and stability of the projection welding process. A rotating column and a rack are provided. The rotating column is started to rotate, driving the gear to rotate. The gear moves on the rack, and can drive two different welding objects to align for welding, thereby improving the versatility and flexibility of the projection welding positioning mechanism, avoiding deviations and errors in the welding process, improving the welding quality, and being very convenient. An auxiliary frame is provided to facilitate the limit support of the rotating frame to prevent it from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0020] Figure 3 This is a schematic diagram of the internal cross-section of the structural positioning plate of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of the structural moving mechanism of the utility model.

[0022] In the figure: 1. positioning plate; 2. positioning box; 3. pneumatic telescopic rod; 4. clamping plate; 5. handle; 6. universal wheel; 7. rotating frame; 8. gear; 9. motor; 10. bidirectional screw; 11. clamping block; 12. rack; 13. rotating column; 14. auxiliary frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 A projection welding positioning mechanism comprises a positioning plate 1, a moving mechanism and a positioning box 2. The upper side wall of the positioning plate 1 is provided with a symmetrical groove, and the moving mechanism is in the groove. The moving mechanism comprises a rack 12, a rotating column 13 and a gear 8. The rack 12 is at the bottom wall of the groove, and the gear 8 is at the upper end of the rack 12 and meshes with it. The rotating column 13 passes through the gear 8. A sliding hole is provided on the outer side wall of the groove, and the rotating column 13 passes through the sliding hole and is slidably connected with it. A rotating frame 7 is provided on the rotating column 13, and the rotating column 13 passes through the rotating frame 7 and is rotatably connected with it. The positioning box 2 is at the upper end of the rotating frame 7, and a cavity is provided in the positioning box 2, and a bidirectional screw 10 is provided in the cavity. A side wall of the positioning box 2 is provided There is a motor 9, the bidirectional screw 10 passes through the positioning box 2 and is connected to the output end of the motor 9, the bidirectional screw 10 is provided with a symmetrical clamping block 11, the bidirectional screw 10 passes through the clamping block 11, the bidirectional screw 10 is provided with a positive thread and a negative thread, the positive thread passes through one of the clamping blocks 11 and is threadedly connected thereto, the negative thread passes through the other clamping block 11 and is threadedly connected thereto, the clamping block 11 is fitted with the positioning box 2 and is slidably connected, a pneumatic telescopic rod 3 is provided at the front end of the clamping block 11, symmetrical through holes are provided on both side walls of the groove, symmetrical auxiliary frames 14 are provided at both ends of the rotating frame 7, the auxiliary frames 14 pass through the through holes and are slidably connected thereto, and a clamping plate 4 is provided at the front end of the pneumatic telescopic rod 3.

[0025] During use, the device is placed at the lower end of the projection welding machine, and the objects to be welded are placed between the two clamping plates 4 respectively, and the motor 9 is started. The output of the motor 9 drives the bidirectional screw 10 to rotate. Under the limit of the positioning box 2, the clamping block 11 moves with the rotation of the bidirectional screw 10, driving the clamping plate 4 to move until the clamping plate 4 clamps the object to be welded for fixing. Then the rotating column 13 is started. The rotating column 13 has a built-in motor 9. The rotating column 13 automatically rotates and drives the gear 8 to rotate. Since the gear 8 is meshed with the rack 12, the gear 8 moves on the rack 12, and the auxiliary frame 14 slides in the through hole for support. During the movement, since the rotating frame 7 is rotatably connected to the rotating column 13, the rotating frame 7 will not rotate, which can drive the object to be welded to move, which is convenient for alignment welding and prevents deviation. After alignment, the pneumatic telescopic rod 3 is started to extend it for use until the welding head of the projection welding machine is aligned with the welding point for welding.

[0026] In actual use, it is necessary to facilitate the movement and stopping of the device. In order to meet the above requirements, in this embodiment, universal wheels 6 are provided at the four corners of the bottom wall of the positioning plate 1, and a brake assembly is provided on the universal wheel 6, and the universal wheel 6 is adapted to the brake assembly.

[0027] In actual use, it is necessary to conveniently hold and pull the device to move. In order to meet the above requirement, in this embodiment, a handle 5 is provided on the front side wall of the positioning plate 1, and anti-slip grooves are provided on the handle 5.

[0028] In actual use, it is necessary to prevent damage to the welded object during clamping. In order to meet the above requirement, in this embodiment, a silicone pad is provided on the inner wall of the clamping plate 4.

[0029] In actual use, it is necessary to increase its service life and supporting force. In order to meet the above requirements, in this embodiment, the auxiliary frame 14 is made of alloy material.

[0030] In actual use, it is necessary to conveniently control the position of the clamping block 11. In order to meet the above requirement, in this embodiment, the motor 9 is a servo motor.

[0031] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection welding positioning mechanism, comprising a positioning plate (1), a moving mechanism and a positioning box (2), characterized in that: The upper side wall of the positioning plate (1) is provided with a symmetrical groove, and the moving mechanism is in the groove. The moving mechanism comprises a rack (12), a rotating column (13) and a gear (8), the rack (12) is on the bottom wall of the groove, the gear (8) is on the upper end of the rack (12) and meshes with it, the rotating column (13) passes through the gear (8), the outer side wall of the groove is provided with a sliding hole, the rotating column (13) passes through the sliding hole and is slidably connected with it, a rotating frame (7) is provided on the rotating column (13), the rotating column (13) passes through the rotating frame (7) and is rotatably connected with it, the positioning box (2) is at the upper end of the rotating frame (7), a cavity is provided in the positioning box (2), the A bidirectional screw (10) is arranged in the cavity, a motor (9) is arranged on one side wall of the positioning box (2), the bidirectional screw (10) passes through the positioning box (2) and is connected to the output end of the motor (9), a symmetrical clamping block (11) is arranged on the bidirectional screw (10), the bidirectional screw (10) passes through the clamping block (11), a positive thread and a negative thread are arranged on the bidirectional screw (10), the positive thread passes through one of the clamping blocks (11) and is threadedly connected thereto, the negative thread passes through the other clamping block (11) and is threadedly connected thereto, the clamping block (11) is fitted with and slidably connected to the positioning box (2), and a pneumatic telescopic rod (3) is arranged at the front end of the clamping block (11).

2. A projection welding positioning mechanism according to claim 1, characterized in that: Symmetrical through holes are arranged on both side walls of the groove, and symmetrical auxiliary frames (14) are arranged at both ends of the rotating frame (7), and the auxiliary frames (14) pass through the through holes and are slidably connected thereto.

3. A projection welding positioning mechanism according to claim 2, characterized in that: Universal wheels (6) are arranged at the four corners of the bottom wall of the positioning plate (1), a brake assembly is arranged on the universal wheel (6), and the universal wheel (6) is adapted to the brake assembly.

4. A projection welding positioning mechanism according to claim 3, characterized in that: The front side wall of the positioning plate (1) is provided with a handle (5), and the handle (5) is provided with anti-slip grooves.

5. A projection welding positioning mechanism according to claim 4, characterized in that: A clamping plate (4) is provided at the front end of the pneumatic telescopic rod (3).

6. A projection welding positioning mechanism according to claim 5, characterized in that: The inner side wall of the clamping plate (4) is provided with a silica gel pad.

7. A projection welding positioning mechanism according to claim 6, characterized in that: The auxiliary frame (14) is made of alloy material.

8. A projection welding positioning mechanism according to claim 7, characterized in that: The motor (9) is a servo motor.

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