Welding grounding device

Abstract

The utility model relates to the technical field of welding, in particular to a welding grounding device which comprises a grounding block, the grounding block is installed on a connecting block, an insulating block is arranged between the grounding block and the connecting block, the connecting block is connected with a linear driving device, one side of the grounding block is provided with a connecting hole, the grounding block is provided with a grounding column, and the linear driving device is installed on a support. Compared with the prior art, the linear driving device is independently arranged to drive the grounding block to make contact with the workpiece to be grounded, so that a grounding electrode does not need to be made on the robot gripper, the design of the gripper can be simplified, it can be guaranteed that the grounding electrode is welded on the back of the welding position every time, and the influence of resistance of the workpiece on welding is reduced; the method can be suitable for various welding processes such as stud welding and spot welding.

Description

Technical Field

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

[0002] During welding, the welding machine, welding gun, workpiece and grounding wire form a loop, and the welding gun and the workpiece generate an arc or resistance heat for welding. In existing automatic welding equipment, for example, a robot stud welding gripper disclosed in publication number CN113276139A, the grounding electrode is set at a fixed position on the frame, the welding robot grabs the workpiece and moves, and welds with a fixed welding gun. The fixed position of the grounding electrode on the workpiece makes some welding points too far away from the grounding electrode, and the welding process is prone to poor grounding feedback; the grounding wire needs to be connected from the welding machine to the tail of the robot, through the robot pipeline package to the grounding electrode on the gripper. The grounding wire is relatively long, and it is easy to have poor cable contact, resulting in grounding alarm problems during welding; the grounding electrode is far away from the welding position, and the support cannot be designed to be directly below the stud, and the workpiece is prone to deformation. Summary of the invention

[0003] The utility model provides a welding grounding device to overcome the deficiencies of the prior art.

[0004] To achieve the above-mentioned purpose, a welding grounding device is designed, including a grounding block, which is installed on a connecting block. An insulating block is provided between the grounding block and the connecting block. The connecting block is connected to a linear drive device. A connecting hole is provided on one side of the grounding block. A grounding column is provided on the grounding block. The linear drive device is installed on a bracket.

[0005] The grounding block is locked with the connecting block by means of insulating bolts.

[0006] One side of the grounding column is a cylindrical head, and the other side is a stud. The stud is connected to the connection block through threads, and a nut is arranged outside the stud.

[0007] The grounding block and the grounding column are made of copper.

[0008] The linear drive device is an electric cylinder or a pneumatic cylinder.

[0009] A guide rod is provided on one side of the connection block, a connection sleeve is provided on one side of the bracket, and the guide rod is sleeved in the guide sleeve.

[0010] The bracket is fixedly connected to the upper part of the sleeve one, and the lower part of the sleeve one is sleeved with the sleeve two. The sides of the sleeve one and the sleeve two are provided with fixing holes, and the lower part of the sleeve two is fixedly connected to the base.

[0011] A reinforcing plate is connected between the side surface of the second sleeve and the base.

[0012] Compared with the prior art, the utility model drives the grounding block to contact the workpiece for grounding by separately arranging a linear drive device, so that there is no need to make a grounding electrode on the robot gripper, the design of the gripper can be simplified, and it can be ensured that the grounding electrode is at the back of the welding position each time welding, thereby reducing the influence of the resistance of the workpiece on welding, and can be applicable to various welding processes such as stud welding and spot welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model.

[0014] Figure 2 It is a partial enlarged view of the utility model.

[0015] Figure 3 It is a structural cross-sectional view of the grounding block.

[0016] See also Figure 1-Figure 3 , where 1 is a grounding block, 1-1 is a connecting hole, 2 is an insulating block, 3 is a connecting block, 3-1 is a guide rod, 4 is an insulating bolt, 5 is a linear drive device, 6 is a grounding column, 6-1 is a cylindrical head, 6-2 is a stud, 7 is a nut, 8 is a bracket, 8-1 is a guide sleeve, 9 is a sleeve one, 10 is a sleeve two, 11 is a fixing hole, 12 is a base, and 13 is a reinforcing plate. DETAILED DESCRIPTION

[0017] The utility model is further described below with reference to the accompanying drawings.

[0018] like Figure 1-Figure 3 As shown, the grounding block 1 is mounted on the connecting block 3, an insulating block 2 is provided between the grounding block 1 and the connecting block 3, the connecting block 3 is connected to the linear drive device 5, a connecting hole 1-1 is provided on one side of the grounding block 1, a grounding column 6 is provided on the grounding block 1, and the linear drive device 5 is mounted on the bracket 8. The grounding block 1 is connected to the grounding wire through the connecting hole 1-1, the insulating block 2 insulates the grounding block 1 from the connecting block 3, so that the linear drive device 5 will not be electrified, the linear drive device 5 drives the grounding block 1 to extend so that the grounding column 6 contacts the workpiece for grounding, the top area of ​​the grounding column 6 is smaller than the area of ​​the connecting block provided with the connecting hole 1-1, and protrudes from the grounding block 1 to facilitate contact with the grounding point of the workpiece.

[0019] The grounding block 1 is locked with the connecting block 3 by means of insulating bolts 4. The insulating bolts 4 can prevent the grounding block 1 and the connecting block 3 from being electrically conductive.

[0020] One side of the grounding column 6 is a cylindrical head 6-1, and the other side is a stud 6-2. The stud 6-2 is connected to the connection block 3 by a thread, and a nut 7 is arranged outside the stud 6-2. The cylindrical head 6-1 is used to contact and ground the workpiece, and the stud 6-2 can be rotated to adjust the height of the cylindrical head 6-1. After the adjustment is completed, the nut 7 is tightened to fix the grounding column 6 and the connection block 3.

[0021] The ground block 1 and the ground post 6 are made of copper. Copper has a small resistance, can withstand a large welding current, and is easy to dissipate heat.

[0022] The linear drive device 5 is an electric cylinder or a pneumatic cylinder. Both the electric cylinder and the pneumatic cylinder can drive the grounding block 3 to move.

[0023] A guide rod 3-1 is connected to one side of the connection block 3, and a guide sleeve 8-1 is connected to one side of the bracket 8, and the guide rod 3-1 is sleeved in the guide sleeve 8-1. The cooperation between the guide rod 3-1 and the guide sleeve 8-1 can make the connection block 3 more stable when telescopically moving.

[0024] The bracket 8 is fixedly connected to the upper part of the sleeve 1 9, and the lower part of the sleeve 1 9 is sleeved with the sleeve 2 10. The sides of the sleeve 1 9 and the sleeve 2 10 are provided with fixing holes 11, and the lower part of the sleeve 2 10 is fixedly connected to the base 12. The sleeve 1 9 and the sleeve 2 10 can be moved to adjust the height of the device, and can be locked with bolts passing through the fixing holes 11, and the base 12 can be fixedly connected to the ground.

[0025] A reinforcing plate 13 is connected between the side of the second sleeve 10 and the base 12. The reinforcing plate 13 can strengthen the connection structure between the second sleeve 10 and the base 12 to make the device more stable.

[0026] When the utility model is used, the robot gripper grabs the workpiece to the welding position, then the linear drive device 5 pushes out the grounding block 1, the grounding column 6 pushes against the workpiece to ground the workpiece, and then the welding gun moves to the welding position for welding. After welding is completed, the linear drive device 5 retracts, and the robot gripper moves to the next welding position for welding.

[0027] The linear drive device 5 can adopt an electric cylinder or a pneumatic cylinder: if an electric cylinder is adopted, the stroke of the electric cylinder can be controlled according to different workpieces and welding positions, so that the grounding column 6 contacts the workpiece for grounding, and the insulating block 2 and the insulating bolt 4 can effectively prevent the electric cylinder from being electrified and affecting the operation and safety of the electric cylinder; if a pneumatic cylinder is adopted, the stroke of the cylinder is fixed and only one contact position height can be set. The insulating block 2 and the insulating bolt 4 can prevent the cylinder shell from being electrified and affecting the safety of the equipment.

Claims

1. A welding grounding device, comprising a grounding block (1), characterized in that: The grounding block (1) is mounted on the connecting block (3); an insulating block (2) is provided between the grounding block (1) and the connecting block (3); the connecting block (3) is connected to the linear drive device (5); a connecting hole (1-1) is provided on one side of the grounding block (1); a grounding column (6) is provided on the grounding block (1); and the linear drive device (5) is mounted on a bracket (8).

2. A welding grounding device according to claim 1, characterized in that: The grounding block (1) is locked with the connecting block (3) via insulating bolts (4).

3. A welding grounding device according to claim 1, characterized in that: One side of the grounding column (6) is a cylindrical head (6-1), and the other side is a stud (6-2); the stud (6-2) is connected to the connection block (3) via threads, and a nut (7) is provided outside the stud (6-2).

4. A welding grounding device according to claim 1, characterized in that: The grounding block (1) and the grounding column (6) are made of copper.

5. A welding grounding device according to claim 1, characterized in that: The linear drive device (5) is an electric cylinder or a pneumatic cylinder.

6. A welding grounding device according to claim 1, characterized in that: One side of the connection block (3) is connected to a guide rod (3-1), one side of the bracket (8) is connected to a guide sleeve (8-1), and the guide rod (3-1) is sleeved in the guide sleeve (8-1).

7. A welding grounding device according to claim 1, characterized in that: The bracket (8) is fixedly connected to the upper part of the sleeve one (9), and the lower part of the sleeve one (9) is sleeved with the sleeve two (10). The sides of the sleeve one (9) and the sleeve two (10) are provided with fixing holes (11), and the lower part of the sleeve two (10) is fixedly connected to the base (12).

8. A welding grounding device according to claim 7, characterized in that: A reinforcing plate (13) is connected between the side surface of the second sleeve (10) and the base (12).

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