Grounding device of welding machine

Abstract

The utility model discloses a welding machine grounding device which comprises a grounding tool, a ground wire structure and a jacking screw rod, the ground wire structure and the jacking screw rod are both installed on the grounding tool, the grounding tool is fixed on a weldment, the grounding tool comprises a middle base, a first side base and a second side base, and the middle base is fixed on the first side base. Connecting ends are arranged at the two ends of the middle base, the connecting end on one side of the middle base is connected with the first side base, and the connecting end on the other side of the middle base is connected with the second side base. The technical key points are as follows: the structural form of the grounding tool is changed by adjusting the included angle between the side base and the middle base, so that the grounding tool is suitable for weldments with different structural characteristics, the universality and the use flexibility of the grounding tool are improved, a spring structure is not arranged on the grounding tool, the spring structure is replaced by a screw rod structure, and the grounding tool is convenient to use. The grounding tool has the magnetic attraction function and can be directly attracted to a weldment, and the clamping and fixing environment does not need to be considered.

Description

Technical Field

[0001] This utility model relates to the field of welding machine grounding technology, and in particular to a welding machine grounding device. Background Technology

[0002] Welding, as a crucial process in modern advanced manufacturing, has received widespread attention. In shipbuilding, welding technology is a key technology; in many important welded structures, substandard welding quality and insufficient joint strength and toughness lead to the failure of the entire welded structure, causing significant losses. With the increasing demands of modern industry and other sectors, welding technology continues to advance, and the quality of welding directly reflects the quality of shipbuilding. In practical applications, grounding protection for welding machines is a vital measure to ensure safe production.

[0003] Shipbuilding requires a large number of welding operations, and routine inspections often reveal that the grounding devices of welding machines are of various types and used improperly. The commonly used grounding device is the grounding clamp structure. The use of the grounding clamp structure requires a suitable clamping point. The clamp-shaped grounding clamp structure is easily affected by the shape and structural characteristics of the "workpiece" and cannot be clamped properly.

[0004] The grounding clamp structure relies on spring force to clamp the welded parts. Therefore, the quality of the spring structure directly affects the quality of the grounding clamp structure. After long-term use, the spring structure is prone to spring failure, making the grounding clamp structure unable to continue to be used normally. Existing grounding devices are easily damaged and have a short service life. Utility Model Content

[0005] Technical problems to be solved:

[0006] To address the shortcomings of existing technologies, this utility model provides a welding machine grounding device. By adjusting the angle between the side base and the middle base, the structural form of the grounding fixture can be changed, making the grounding fixture suitable for welding parts with different structural features. This improves the versatility and flexibility of the grounding fixture. Instead of a spring structure, a screw structure replaces the spring structure on the grounding fixture. The grounding fixture has a magnetic attraction function, allowing it to be directly adsorbed onto the welding part without considering the clamping and fixing environment, thus solving the technical problems mentioned in the background art.

[0007] Technical solution:

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A welding machine grounding device includes a grounding fixture, a ground wire structure, and a tightening screw. The ground wire structure and the tightening screw are both mounted on the grounding fixture, which is fixed to the weldment. The grounding fixture includes a central base, a first side base, and a second side base. The grounding fixture, the ground wire structure, and the tightening screw together constitute the grounding device. The ground wire structure is mounted on the central base of the grounding fixture, and the tightening screw is mounted on the second side base. The central base, the first side base, and the second side base together constitute the grounding fixture. The two ends of the central base... Each base is equipped with a connecting end. The connecting end on one side of the intermediate base connects to the first side base, and the connecting end on the other side of the intermediate base connects to the second side base. One end of the first side base is rotatably connected to the lower part of the connecting end via a rotating shaft, and one end of the first side base is fixedly connected to the upper part of the connecting end via a tightening screw. Loosening the tightening screw at the first side base releases the fastening force between the first side base and the intermediate base, allowing the first side base to rotate relative to the intermediate base with the rotating shaft as its base point. One end of the second side base is connected to the connecting end via a tightening screw. The lower part of the connector is rotatably connected via a rotating shaft. One end of the second side base is fixedly connected to the upper part of the connector via a tightening screw. When the tightening screw at the second side base is loosened, the fastening force between the second side base and the intermediate base is released. At this time, the second side base can rotate relative to the intermediate base with the rotating shaft as the base point. The tightening screw includes a screw body. A handle is welded and fixed to one end of the screw body. A screw head is provided at the other end of the screw body. A washer and a conductive head are provided on the screw head. The conductive head contacts the weldment. On the surface, to ensure good grounding of the welding machine, a clamping block is fitted on the head of the lead screw. When the lead screw is manually rotated to tighten, the position of the clamping block at one end of the lead screw can be adjusted according to actual usage needs. A screw hole is opened on the second side base, and the lead screw body of the tightening lead screw passes through the screw hole of the second side base and is threadedly connected to the screw hole. A ground wire connection seat is provided on the middle base, and a fixing hole is opened on the ground wire connection seat. The ground wire connection seat is fixedly connected to the ground wire structure by a locking screw.

[0010] In one possible implementation, the locking screw includes a nut, the grounding structure includes a grounding body and a connector, the locking screw is threadedly connected to the fixing hole of the grounding connector, and when connecting the grounding structure, the connector of the grounding structure is placed at the fixing hole of the grounding connector, and then the locking screw is screwed on, and the connector of the grounding structure is pressed by the nut of the locking screw.

[0011] In one possible implementation, a tightening head is fixedly connected to one end of the tightening screw. When the tightening screw is manually rotated, the tightening screw drives the tightening head at one end to move synchronously. When the tightening head is in close contact with the surface of the first side base or the second side base, the first side base or the second side base is locked.

[0012] In one possible implementation, the first side base is rotatable relative to the intermediate base, and the deflection angle of the first side base relative to the intermediate base is flexibly adjustable, so that the included angle between the first side base and the intermediate base can be flexibly adjusted.

[0013] In one possible implementation, the second side base is rotatable relative to the intermediate base, and the deflection angle of the second side base relative to the intermediate base is flexibly adjustable, so that the included angle between the second side base and the intermediate base can be flexibly adjusted.

[0014] In one possible implementation, the lead screw body and the handle form a T-shaped structure, which facilitates the application of force and makes it easy to adjust the clamping block.

[0015] In one possible implementation, holes are provided on the upper part of the connecting ends at both ends of the intermediate base. The tightening screw passes through the hole and is threadedly connected to the hole at the connecting end, which can tighten and loosen the tightening screw at the first side base and the tightening screw at the second side base.

[0016] In one possible implementation, multiple sets of first magnet blocks are provided on the inner side of the intermediate base. The multiple sets of first magnet blocks are evenly distributed at intervals, so that the intermediate base can be directly magnetically fixed to the weldment through the first magnet blocks, thereby realizing the fixation of the grounding fixture.

[0017] In one possible implementation, multiple sets of second magnet blocks are provided on the inner side of the first side base. The multiple sets of second magnet blocks are evenly distributed at intervals, so that the first side base can be directly magnetically fixed to the weldment through the second magnet blocks, thereby achieving the fixation of the grounding fixture.

[0018] In one possible implementation, multiple sets of the first magnet blocks are fixed to the intermediate base with screws, and multiple sets of the second magnet blocks are fixed to the first side base with screws, which allows the first and second magnet blocks to be replaced individually, making the replacement of the first and second magnet blocks convenient.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The angle between the first side base and the middle base of this utility model is flexibly adjustable, and the angle between the second side base and the middle base is flexibly adjustable. By adjusting the angle between the side base and the middle base, the structural form of the grounding fixture can be changed, making the grounding fixture suitable for weldments with different structural features, improving the versatility and flexibility of the grounding fixture. A set of grounding fixtures has multiple fixed usage methods, suitable for different types of weldment structures, and is not easily affected by the shape and structural features of the weldment.

[0021] 2. The shape of this grounding fixture can be adjusted according to the structural characteristics of the weldment, replacing the conventional grounding clamp structure. The grounding fixture does not have a spring structure, but uses a screw structure instead of a spring structure, avoiding damage caused by spring failure and extending the service life of the grounding fixture.

[0022] 3. By adding multiple sets of first and second magnet blocks, this utility model enables the grounding fixture to have a magnetic attraction function. The grounding fixture can be directly adsorbed onto the weldment without considering the clamping and fixing environment, and is suitable for grounding and fixing irregularly shaped metal weldments. Attached Figure Description

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the assembly of the grounding fixture, grounding wire structure, and tightening screw of this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the assembly of the grounding fixture, grounding wire structure, and tightening screw of this utility model. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of one side view of the grounding fixture of this utility model;

[0027] Figure 4 This is a schematic diagram of the grounding fixture from another side.

[0028] Figure 5 This is a schematic diagram showing the connection between the intermediate base, the first side base, and the second side base of this utility model;

[0029] Figure 6 for Figure 1 Enlarged view of a portion of area A in the middle;

[0030] Figure 7 This is a schematic diagram of the main body of the lead screw of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the clamping block of this utility model;

[0032] Figure 9 This is a schematic diagram of the assembly of the lead screw body and the clamping block of this utility model;

[0033] Figure 10 This is a schematic diagram of the use of this utility model. Figure 1 ;

[0034] Figure 11 This is a schematic diagram of the use of this utility model. Figure 2 ;

[0035] Figure 12 This is a schematic diagram of the use of this utility model. Figure 3 .

[0036] In the diagram: 1. Grounding fixture; 2. Grounding wire structure; 3. Tightening screw; 11. Intermediate base; 12. First side base; 13. Second side base; 111. Connecting end; 112. Rotating shaft; 113. Tightening screw; 114. Grounding wire connector; 115. Fixing hole; 116. Locking screw; 117. Tightening head; 118. First magnet; 121. Second magnet; 131. Screw hole; 21. Grounding wire body; 22. Connecting head; 31. Screw body; 32. Handle; 33. Screw head; 34. Clamping block; 35. Washer; 36. Conductive head. Detailed Implementation

[0037] This application provides a welding machine grounding device. By adjusting the angle between the side base and the middle base, the structural form of the grounding fixture can be changed, making the grounding fixture suitable for welding parts with different structural features. This improves the versatility and flexibility of the grounding fixture. The grounding fixture does not have a spring structure; instead, a screw structure replaces the spring structure. The grounding fixture has a magnetic attraction function, allowing it to be directly attached to the welding part without considering the clamping and fixing environment, thus solving the technical problems mentioned in the background art.

[0038] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0039] Example 1:

[0040] Please see Figure 1-12This utility model provides a technical solution: a welding machine grounding device, including a grounding fixture 1, a ground wire structure 2, and a tightening screw 3. The ground wire structure 2 and the tightening screw 3 are both mounted on the grounding fixture 1, which is fixed to the weldment. The grounding fixture 1 includes a central base 11, a first side base 12, and a second side base 13. The ground wire structure 2 is mounted on the central base 11, and the tightening screw 3 is mounted on the second side base 13. Both ends of the central base 11 are provided with connecting ends 111. One connecting end 111 on one side of the central base 11 connects to the first side base 12, and the other connecting end 111 on the other side of the central base 11 connects to the second side base 13. One end of the first side base 12 is rotatably connected to the lower part of the connecting end 111 via a rotating shaft 112, and one end of the first side base 12 is fixedly connected to the upper part of the connecting end 111 via a tightening screw 113. One end of the second side base 13 is fixedly connected to the lower part of the connecting end 111 via a tightening screw 113. The components are rotatably connected via a rotating shaft 112. One end of the second side base 13 is fixedly connected to the upper part of the connecting end 111 via a tightening screw 113. The tightening screw 3 includes a screw body 31, on which a thread adapted to the screw hole 131 is provided. A handle 32 is welded and fixed to one end of the screw body 31, and a screw head 33 is provided at the other end of the screw body 31. A washer 35 and a conductive head 36 are provided on the screw head 33, and the conductive head 36 contacts the surface of the weldment. To ensure good grounding of the welding machine, a clamping block 34 is fitted on the screw head 33, and a screw hole 131 is opened on the second side base 13. The screw body 31 that tightens the screw 3 passes through the screw hole 131 of the second side base 13 and is threadedly connected to the screw hole 131. A ground wire connection seat 114 is provided on the middle base 11. A fixing hole 115 is opened on the ground wire connection seat 114. The ground wire connection seat 114 and the ground wire structure 2 are fixedly connected by a locking screw 116.

[0041] When the tightening screw 3 is rotated manually, the position of the clamping block 34 at one end of the tightening screw 3 can be adjusted according to the actual use requirements.

[0042] The grounding fixture 1, the ground wire structure 2, and the tightening screw 3 together constitute the grounding device. The intermediate base 11, the first side base 12, and the second side base 13 together constitute the grounding fixture 1. One end of the first side base 12 is connected to the intermediate base 11, and one end of the first side base 12 includes two connection points: one is a connection point formed by the rotating shaft 112, and the other is a connection point formed by the tightening screw 113.

[0043] When the tightening screw 113 at the first side base 12 is loosened, the fastening force between the first side base 12 and the intermediate base 11 is released. At this time, the first side base 12 can rotate relative to the intermediate base 11 with the pivot 112 as the base point. The deflection angle of the first side base 12 relative to the intermediate base 11 can be adjusted. After the adjustment is completed, the tightening screw 113 at the first side base 12 is tightened. The first side base 12 and the intermediate base 11 are re-tightened by the tightening screw 113.

[0044] When the tightening screw 113 at the second side base 13 is loosened, the fastening force between the second side base 13 and the intermediate base 11 is released. At this time, the second side base 13 can rotate relative to the intermediate base 11 with the pivot 112 as the base point. The deflection angle of the second side base 13 relative to the intermediate base 11 can be adjusted. After the adjustment is completed, tighten the tightening screw 113 at the second side base 13 to re-tighten the second side base 13 and the intermediate base 11.

[0045] The angle between the first side base 12 and the middle base 11 is flexibly adjustable, and the angle between the second side base 13 and the middle base 11 is also flexibly adjustable. Figure 10 , Figure 11 and Figure 12 As shown, according to the structural characteristics of the weldment, the included angle between the first side base 12 and the middle base 11, and the included angle between the second side base 13 and the middle base 11 are adjusted accordingly. By adjusting the included angle between the side base and the middle base 11, the structural form of the grounding fixture 1 is changed, so that the grounding fixture 1 can be applied to weldments with different structural characteristics, thereby improving the versatility and flexibility of the grounding fixture 1. A set of grounding fixtures 1 has multiple fixed usage methods and is suitable for different types of weldment structures.

[0046] like Figure 10 , Figure 11 and Figure 12 As shown, when using the grounding device, first determine the grounding position of the weldment, and then fix the grounding fixture 1 at that position. The shape of the grounding fixture 1 is manually adjusted according to the structural characteristics of the weldment. The grounding fixture 1 is not equipped with a spring structure, but uses a screw structure instead of a spring structure to avoid damage caused by spring failure, thus extending the service life of the grounding fixture 1. This can meet the needs of production and safety, and also save costs.

[0047] The grounding fixture 1 is fixed in the following way:

[0048] When grounding regularly shaped weldments, such as Figure 10As shown, the first side base 12 is pressed tightly against one side of the weldment, and then the tightening screw 3 is manually rotated to adjust the position of the clamping block 34 at one end of the tightening screw 3. The clamping block 34 is pressed tightly against the other side of the weldment, and the weldment is clamped by the first side base 12 and the clamping block 34, so as to fix the grounding fixture 1 on the weldment.

[0049] When grounding irregularly shaped weldments, such as Figure 11 and Figure 12 As shown, the shape of the grounding fixture 1 is adjusted according to the structural characteristics of the weldment. In the same way, the first side base 12 is pressed tightly against one side of the weldment. Then, the tightening screw 3 is manually rotated to adjust the position of the clamping block 34 at one end of the tightening screw 3. The clamping block 34 is pressed tightly against the other side of the weldment. The weldment is clamped by the first side base 12 and the clamping block 34, thereby fixing the grounding fixture 1 on the weldment.

[0050] In some examples, the locking screw 116 includes a nut, the grounding structure 2 includes a grounding body 21 and a connector 22, and the locking screw 116 is threadedly connected to the fixing hole 115 of the grounding connector 114.

[0051] When connecting the ground wire structure 2, place the connector 22 of the ground wire structure 2 at the fixing hole 115 of the ground wire connector 114, and then screw on the locking screw 116. The nut of the locking screw 116 is used to press the connector 22 of the ground wire structure 2 together, thereby connecting and fixing the ground wire structure 2 to the grounding fixture 1. When disassembling the ground wire structure 2, simply unscrew the locking screw 116. The installation and disassembly of the ground wire structure 2 are convenient and quick.

[0052] In some examples, one end of the tightening screw 113 is fixedly connected to a tightening head 117. When the tightening head 117 is in close contact with the surface of the first side base 12 or the second side base 13, the first side base 12 or the second side base 13 is locked.

[0053] When the tightening screw 113 is manually rotated, the tightening screw 113 drives the tightening head 117 at one end to move synchronously. When it is necessary to lock the first side base 12 or the second side base 13 by means of the tightening screw 113, simply rotate the tightening screw 113 manually to drive the tightening head 117 at the end to move, so that the tightening head 117 is in close contact with the contact surface of the first side base 12 or the second side base 13, thereby locking the first side base 12 or the second side base 13, determining the deflection angle of the first side base 12 or the second side base 13, and keeping it stable.

[0054] In some examples, the first side base 12 is rotatable relative to the middle base 11, and the deflection angle of the first side base 12 relative to the middle base 11 is flexibly adjustable, so that the included angle between the first side base 12 and the middle base 11 can be flexibly adjusted.

[0055] In some examples, the second side base 13 can rotate relative to the middle base 11, and the deflection angle of the second side base 13 relative to the middle base 11 is flexibly adjustable, so that the included angle between the second side base 13 and the middle base 11 can be flexibly adjusted.

[0056] In some examples, the lead screw body 31 and the handle 32 form a T-shaped structure, which facilitates the application of force and makes it easy to adjust the clamping block 34.

[0057] In some examples, the upper part of the connecting ends 111 at both ends of the intermediate base 11 is provided with a hole, and the tightening screw 113 passes through the hole and is threadedly connected to the hole of the connecting end 111, so that the tightening screw 113 at the first side base 12 can be tightened and loosened, and the tightening screw 113 at the second side base 13 can be tightened and loosened.

[0058] By adopting the above technical solution:

[0059] The angle between the first side base 12 and the middle base 11 is flexibly adjustable, and the angle between the second side base 13 and the middle base 11 is flexibly adjustable. By adjusting the angle between the side base and the middle base 11, the structural form of the grounding fixture 1 can be changed, making the grounding fixture 1 suitable for weldments with different structural features, improving the versatility and flexibility of the grounding fixture 1. A set of grounding fixtures 1 has multiple fixed usage methods, suitable for different types of weldment structures, and is not easily affected by the shape and structural features of the weldment.

[0060] The shape of the grounding fixture 1 can be adjusted according to the structural characteristics of the weldment, replacing the conventional grounding clamp structure. The grounding fixture 1 does not have a spring structure, but uses a screw structure instead of a spring structure to avoid damage caused by spring failure and extend the service life of the grounding fixture 1.

[0061] Example 2:

[0062] Based on Example 1, this example introduces the specific structure of the grounding fixture 1 in a welding machine grounding device. Multiple sets of first magnet blocks 118 are arranged on the inner side of the intermediate base 11, and the multiple sets of first magnet blocks 118 are evenly distributed at intervals.

[0063] Multiple sets of first magnet blocks 118 are added to the inner side of the intermediate base 11, which can directly magnetically fix the intermediate base 11 to the welding workpiece through the first magnet blocks 118, thereby realizing the fixation of the grounding fixture 1.

[0064] In some examples, multiple sets of second magnet blocks 121 are provided on the inner side of the first side base 12, and the multiple sets of second magnet blocks 121 are evenly distributed at intervals.

[0065] Multiple sets of second magnet blocks 121 are added to the inner side of the first side base 12, which can directly magnetically fix the first side base 12 to the welding workpiece through the second magnet blocks 121, thereby realizing the fixation of the grounding fixture 1.

[0066] In some examples, multiple sets of first magnet blocks 118 are fixed to the intermediate base 11 by screws, and multiple sets of second magnet blocks 121 are fixed to the first side base 12 by screws. The multiple sets of first magnet blocks 118 and intermediate base 11 are detachably connected, and the multiple sets of second magnet blocks 121 and first side base 12 are detachably connected, which allows for the individual replacement of the first magnet blocks 118 and second magnet blocks 121, making the replacement of the first magnet blocks 118 and second magnet blocks 121 convenient.

[0067] By adopting the above technical solution:

[0068] By adding multiple sets of first magnet blocks 118 and second magnet blocks 121, the grounding fixture 1 has a magnetic attraction function. The grounding fixture 1 can be directly attracted to the weldment without considering the clamping and fixing environment, and is suitable for grounding and fixing irregularly shaped metal weldments.

[0069] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A welding machine grounding device, comprising a grounding tool (1), a ground wire structure (2) and a tightening screw rod (3), characterized in that: The ground wire structure (2) and the top tightening screw rod (3) are both installed on the grounding tool (1), the grounding tool (1) is fixed on the welding part, the grounding tool (1) comprises a middle base (11), a first side base (12) and a second side base (13), both ends of the middle base (11) are provided with connecting ends (111), the connecting end (111) on one side of the middle base (11) is connected with the first side base (12), the connecting end (111) on the other side of the middle base (11) is connected with the second side base (13), one end of the first side base (12) is rotatably connected with the lower part of the connecting end (111) through a rotating shaft (112), one end of the first side base (12) is fixedly connected with the upper part of the connecting end (111) through a top tightening screw (113), one end of the second side base (13) is rotatably connected with the lower part of the connecting end (111) through a rotating shaft (112), one end of the second side base (13) is fixedly connected with the upper part of the connecting end (111) through a top tightening screw (113), the top tightening screw rod (3) comprises a screw rod main body (31), one end of the screw rod main body (31) is welded and fixed with a handle (32), the other end of the screw rod main body (31) is provided with a screw rod head (33), the screw rod head (33) is provided with a gasket (35) and a conductive head (36), the screw rod head (33) is sleeved with a pressing block (34), a screw hole (131) is formed in the second side base (13), the screw rod main body (31) of the top tightening screw rod (3) penetrates through the screw hole (131) of the second side base (13) and is threadedly connected with the screw hole (131), a ground wire connecting seat (114) is arranged on the middle base (11), a fixing hole (115) is formed in the ground wire connecting seat (114), and the ground wire connecting seat (114) and the ground wire structure (2) are fixedly connected through a locking screw (116).

2. A welding machine grounding device according to claim 1, wherein: The locking screw (116) comprises a screw cap, the ground wire structure (2) comprises a ground wire main body (21) and a connecting head (22), and the locking screw (116) is threadedly connected with the fixing hole (115) of the ground wire connecting seat (114).

3. A welding machine grounding device as defined in claim 1, wherein: One end of the top tightening screw (113) is fixedly connected with a top tightening head (117).

4. A welding machine grounding device according to claim 1, wherein: The first side base (12) can rotate relative to the middle base (11).

5. A welding machine grounding device as defined in claim 1, wherein: The second side base (13) can rotate relative to the middle base (11).

6. A welding machine grounding device according to claim 1, wherein: The screw rod main body (31) and the handle (32) form a T-shaped structure.

7. A welding machine grounding device as defined in claim 1, wherein: The upper part of the connecting end (111) at both ends of the middle base (11) is provided with a hole body, the top tightening screw (113) penetrates through the hole body and is threadedly connected with the hole body of the connecting end (111).

8. A welding machine grounding device according to claim 1, wherein: A plurality of first magnet blocks (118) are arranged on the inner side surface of the middle base (11), and the plurality of first magnet blocks (118) are uniformly distributed at intervals.

9. A welding machine grounding device as defined in claim 8, wherein: A plurality of second magnet blocks (121) are arranged on the inner side surface of the first side base (12), and the plurality of second magnet blocks (121) are uniformly distributed at intervals.

10. A welding machine grounding device according to claim 9, wherein: The first magnet blocks (118) and the intermediate base (11) are fixed by screws. The second magnet blocks (121) and the first side base (12) are fixed by screws.

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