Cold welder spot welding device

Abstract

The utility model relates to spot welding device field, concretely is cold welding machine spot welding device, including support, the support side wall is seted up with slide rail groove, still include: spot welding part, spot welding part sliding installation is in the slide rail groove department, the sliding installation of spot welding part has in sliding part, the rotation part rotation drives the up and down sliding of sliding part and carries out spot welding. In the utility model, through the metal workpiece to be welded is put into the clamping groove, drive rotating wheel rotation, the periodic contact of arc convex block on rotating wheel installs block, converts the rotary motion into up and down reciprocating motion, when rotating wheel rotates, convex block promotes installation block, stretches reset spring, makes welding head to descend and contacts workpiece, after convex block is separated, reset spring drives sliding part reset, welding head lifts, through motor rotating speed control welding head's up and down movement frequency, to control spot welding speed, to guarantee the heat of each welding is consistent, avoid overburning or unmelting, make the fusion nucleus consistency promote, through the adjustment motor rotating speed to adapt to the material of different thermal conductivity.

Description

Technical Field

[0001] This utility model relates to the field of spot welding devices, and more particularly to spot welding devices for cold welding machines. Background Technology

[0002] Cold welding machines are devices that join materials using low-temperature welding technology. Their core characteristic is the extremely low heat input during the welding process, thus avoiding problems such as thermal deformation and alterations in metal structure caused by traditional high-temperature welding. Cold welding machines can weld material combinations that are difficult to handle using traditional methods, relying on molecular diffusion bonding rather than molten mixing. Traditional welding's high temperatures anneal metals and generate residual stress, while cold welding preserves the original mechanical properties of the base material, reduces subsequent processing, and is easy to operate. Some cold welding processes can achieve millisecond-level welding, making them suitable for automated production lines. Spot welding is a specific application of cold welding technology, mainly using low-temperature, instantaneous energy input to achieve point-like connections or repairs of metal materials, filling pores and cracks on the metal surface. Cold spot welding offers high controllability and preserves key properties of the base material such as hardness and conductivity, significantly improving the mechanical strength and electrical stability of the joined parts. Cold welding machines utilize the instantaneous discharge of a high-voltage capacitor to generate localized high temperatures at the contact point between the electrode and the workpiece, causing the metal micro-area to melt and rapidly cool, forming a weld point.

[0003] When performing spot welding, there is a problem that it is difficult to accurately control the spot welding time each time. In view of this, a cold welding machine spot welding device is provided. Utility Model Content

[0004] The main purpose of this utility model is to provide a cold welding machine spot welding device to solve the problem in the related technology that it is difficult to accurately control the spot welding time each time.

[0005] To achieve the above objectives, according to one aspect of the present invention, a cold welding machine spot welding device is provided, including a support, wherein a slide rail groove is provided on the side wall of the support, and further including: a spot welding part, the spot welding part being slidably installed in the slide rail groove, a rotating part being rotatably installed inside the spot welding part, and a sliding part being slidably installed inside the spot welding part, wherein the rotating part rotates and drives the sliding part to slide up and down to perform spot welding.

[0006] Furthermore, the support has a clamping groove, and two telescopic grooves are symmetrically opened on the side wall of the clamping groove. A clamping plate is slidably installed in the telescopic groove. Two connecting springs are fixedly installed on one side of the clamping plate, and the other end of the connecting spring is fixedly installed on the inner side wall of the telescopic groove. A tightening screw hole communicating with the clamping groove is opened on the side wall of the support, and a tightening bolt is installed in the thread of the tightening screw hole.

[0007] Furthermore, a lead screw is rotatably installed in the slide rail groove, with one end of the lead screw passing through the support and exposed to the outside.

[0008] Furthermore, the spot welding part includes a mounting housing, a mounting groove is provided on the lower surface of the mounting housing, a lead screw nut is fixedly installed on one side of the mounting housing, the lead screw nut is slidably installed in the slide rail groove, the lead screw nut is a T-shaped structure adapted to the slide rail groove, and the lead screw nut is threadedly engaged with the lead screw.

[0009] Furthermore, the rotating part is rotatably installed in the mounting groove. The rotating part includes a rotating wheel, and several protrusions are fixedly installed in a circular array on the arc wall of the rotating wheel. The protrusions have an arc-shaped structure, and a rotating shaft is fixedly installed at the center of the side wall of the rotating wheel.

[0010] Furthermore, the mounting housing has a mounting hole with a connecting mounting groove on its side wall, one end of the rotating shaft is rotatably installed in the mounting hole, and a motor is fixedly installed on the side wall of the mounting housing, with the motor output shaft fixedly connected to the rotating shaft.

[0011] Furthermore, two limiting grooves are symmetrically opened on the side wall of the mounting groove, and the sliding part is slidably installed between the two limiting grooves. The sliding part includes a clamping block, and a mounting plate is fixedly installed on the upper end of the clamping block. Several return springs are fixedly installed on the upper surface of the mounting plate, and the other end of the return spring is fixedly installed in the mounting groove.

[0012] Furthermore, two limiting blocks are symmetrically fixedly installed on the side wall of the clamping block. The limiting blocks are slidably installed in the limiting groove, and the limiting blocks are T-shaped structures adapted to the limiting groove.

[0013] Furthermore, an mounting block is fixedly installed on the upper end of the clamping block. The upper surface of the mounting block has an arc-shaped structure. A fixing groove is opened at the lower end of the clamping block. The side wall of the fixing groove has an arc-shaped structure. A welding head is fixedly installed in the fixing groove. A positioning screw hole communicating with the fixing groove is opened on the side wall of the clamping block. A positioning bolt is installed in the internal thread of the positioning screw hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the metal workpiece to be welded is placed in the clamping groove. The clamping plates on both sides of the groove automatically move towards the center under the action of connecting springs, initially clamping the workpiece. Tightening the top bolts pushes the clamping plates against the workpiece, ensuring no deviation during welding. This accommodates workpieces of different thicknesses, applies pressure evenly, and prevents deformation of the workpiece due to excessive clamping force. Manually rotating the exposed portion of the lead screw on the outside of the support, the lead screw engages with the T-shaped lead screw nut, causing the entire spot welding section to slide horizontally along the slide rail groove. Adjusting the welding head to directly above the welding point, the T-shaped lead screw nut engages with the slide rail groove to prevent... The spot welding section vibrates, and the motor drives the rotating shaft to rotate, which in turn drives the rotating wheel to rotate. The arc-shaped protrusions on the rotating wheel periodically contact the mounting block, converting the rotational motion into up-and-down reciprocating motion. When the rotating wheel rotates, the protrusions push the mounting block, stretching the return spring and causing the welding head to move down to contact the workpiece. After the protrusions disengage, the return spring drives the sliding part to return to its original position, and the welding head is lifted. The frequency of the up-and-down movement of the welding head is controlled by the motor speed to control the spot welding speed, ensuring that the heat of each weld is consistent, avoiding overheating or incomplete fusion, and improving the consistency of the weld nugget. The motor speed can be adjusted to adapt to materials with different thermal conductivity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the spot welding device in a preferred embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the support structure in a preferred embodiment of the present invention;

[0018] Figure 3 This is a schematic cross-sectional view of the support structure in a preferred embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the spot welding section in a preferred embodiment of the present invention;

[0020] Figure 5 This is a cross-sectional view of the spot weld section in a preferred embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the rotating part structure in a preferred embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the sliding part structure in a preferred embodiment of the present invention;

[0023] Figure 8 This is a cross-sectional view of the mounting housing in a preferred embodiment of the present invention.

[0024] Figure label:

[0025] 1. Support; 11. Clamping groove; 12. Slide rail groove; 111. Telescopic groove; 112. Clamping plate; 113. Connecting spring; 114. Tightening bolt; 121. Lead screw;

[0026] 2. Spot welding part; 21. Mounting housing; 22. Screw nut; 23. Mounting groove; 24. Rotating part; 25. Sliding part; 26. Welding head; 211. Motor; 231. Limiting groove; 232. Mounting hole; 241. Rotating wheel; 242. Rotating shaft; 243. Protrusion; 251. Clamping block; 252. Mounting plate; 253. Return spring; 254. Mounting block; 255. Limiting block; 256. Fixing groove; 257. Positioning screw hole. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] This embodiment provides a cold welding machine spot welding device, including a support 1, a slide rail groove 12 is provided on the side wall of the support 1, and also includes a spot welding part 2, which is slidably installed in the slide rail groove 12, a rotating part 24 is rotatably installed in the spot welding part 2, and a sliding part 25 is slidably installed in the spot welding part 2. The rotating part 24 rotates and drives the sliding part 25 to slide up and down to perform spot welding.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, a clamping groove 11 is provided in the support 1. Two telescopic grooves 111 are symmetrically provided on the side wall of the clamping groove 11. A clamping plate 112 is slidably installed in the telescopic groove 111. Two connecting springs 113 are fixedly installed on one side of the clamping plate 112. The other end of the connecting spring 113 is fixedly installed on the inner side wall of the telescopic groove 111. A tightening screw hole is provided on the side wall of the support 1, which is connected to the clamping groove 11. A tightening bolt 114 is installed in the thread of the tightening screw hole. When the tightening bolt 114 in the tightening screw hole is tightened, the tightening bolt 114 pushes the clamping plate 112 to clamp the metal workpiece between the two clamping plates 112. The clamping plates 112 on both sides of the clamping groove 11 automatically move towards the center under the action of the connecting springs 113 to initially clamp the workpiece. When the tightening bolt 114 is tightened, the tightening bolt 114 pushes the clamping plate 112 against the workpiece to ensure that it does not shift during welding, so as to adapt to workpieces of different thicknesses, apply pressure evenly, and avoid the workpiece from deforming due to excessive clamping force.

[0030] like Figure 2 As shown, a lead screw 121 is rotatably installed in the slide rail groove 12, with one end of the lead screw 121 passing through the support 1 and exposed to the outside.

[0031] like Figure 2 , Figure 4 As shown, the spot welding part 2 includes a mounting housing 21. The lower surface of the mounting housing 21 has a mounting groove 23. A screw nut 22 is fixedly installed on one side of the mounting housing 21. The screw nut 22 is slidably installed in the slide rail groove 12. The screw nut 22 is a T-shaped structure that is adapted to the slide rail groove 12. The screw nut 22 is threadedly engaged with the screw 121. When the part of the screw 121 exposed on the outside of the support 1 is manually rotated, the screw 121 and the T-shaped screw nut 22 are threadedly engaged, which drives the entire spot welding part 2 to slide horizontally along the slide rail groove 12. When the welding head 26 is adjusted to be directly above the welding point, the T-shaped screw nut 22 engages with the slide rail groove 12 to prevent the spot welding part 2 from shaking.

[0032] like Figure 5 , Figure 6 As shown, the rotating part 24 is rotatably installed in the mounting groove 23. The rotating part 24 includes a rotating wheel 241. Several protrusions 243 are fixedly installed in a ring array on the arc wall of the rotating wheel 241. The protrusions 243 have an arc-shaped structure. A rotating shaft 242 is fixedly installed at the center of the side wall of the rotating wheel 241.

[0033] like Figure 5 , Figure 8 As shown, the side wall of the mounting housing 21 has a mounting hole 232 that communicates with the mounting groove 23. One end of the rotating shaft 242 is rotatably installed in the mounting hole 232. A motor 211 is fixedly installed on the side wall of the mounting housing 21. The output shaft of the motor 211 is fixedly connected to the rotating shaft 242. The motor 211 provides power for the rotation of the rotating shaft 242. The motor 211 drives the rotating shaft 242 to rotate, which in turn drives the rotating wheel 241 to rotate.

[0034] like Figure 8 As shown, two limiting grooves 231 are symmetrically opened on the side wall of the mounting groove 23. The sliding part 25 is slidably installed between the two limiting grooves 231. The sliding part 25 includes a clamping block 251. An mounting plate 252 is fixedly installed on the upper end of the clamping block 251. Several return springs 253 are fixedly installed on the upper surface of the mounting plate 252. The other end of the return spring 253 is fixedly installed in the mounting groove 23.

[0035] like Figure 7 As shown, two limiting blocks 255 are symmetrically fixedly installed on the side wall of the clamping block 251. The limiting blocks 255 are slidably installed in the limiting groove 231. The limiting blocks 255 are T-shaped structures that are adapted to the limiting groove 231.

[0036] like Figure 7As shown, a mounting block 254 is fixedly installed on the upper end of the clamping block 251. The upper surface of the mounting block 254 has an arc-shaped structure. A fixing groove 256 is opened at the lower end of the clamping block 251. The side wall of the fixing groove 256 has an arc-shaped structure. A welding head 26 is fixedly installed in the fixing groove 256. A positioning screw hole 257 communicating with the fixing groove 256 is opened on the side wall of the clamping block 251. A positioning bolt is installed in the positioning screw hole 257. When the positioning bolt in the positioning screw hole 257 is tightened, the positioning bolt presses against the side wall of the welding head 26 to clamp the welding head 26. The arc-shaped protrusion 243 on the rotating wheel 241 periodically... The contact mounting block 254 converts the rotational motion into up-and-down reciprocating motion. When the rotating wheel 241 rotates, the protrusion 243 pushes the mounting block 254, stretches the return spring 253, and causes the welding head 26 to move down to contact the workpiece. After the protrusion 243 disengages, the return spring 253 drives the sliding part 25 to return to its original position, and the welding head 26 is lifted. The up-and-down movement frequency of the welding head 26 is controlled by the speed of the motor 211 to control the spot welding speed, so as to ensure that the heat of each weld is consistent, avoid overheating or incomplete fusion, and improve the consistency of the weld nugget. The speed of the motor 211 can be adjusted to adapt to materials with different thermal conductivity.

[0037] In practical use, the metal workpiece to be welded is placed in the clamping groove 11. The clamping plates 112 on both sides of the clamping groove 11 automatically move towards the center under the action of the connecting spring 113, initially clamping the workpiece. The tightening bolt 114 is then tightened, pushing the clamping plate 112 against the workpiece to ensure that it does not shift during welding. This accommodates workpieces of different thicknesses, applies pressure evenly, and prevents the workpiece from deforming due to excessive clamping force. The exposed part of the lead screw 121 on the outside of the support 1 is manually rotated. The lead screw 121 is threaded with the T-shaped lead screw nut 22, causing the entire spot welding part 2 to slide horizontally along the slide rail groove 12. The welding head 26 is adjusted to be directly above the welding point. The T-shaped lead screw nut 22 engages with the slide rail groove 12 to prevent the spot welding part 2 from shaking. The motor 211 drives the rotating shaft 242 to rotate, which in turn drives the rotating wheel 241 to rotate. The arc-shaped protrusion 243 on the rotating wheel 241 periodically contacts the mounting block 254, converting the rotational motion into up-and-down reciprocating motion. When the rotating wheel 241 rotates, the protrusion 243 pushes the mounting block 254, stretches the return spring 253, and causes the welding head 26 to move down to contact the workpiece. After the protrusion 243 disengages, the return spring 253 drives the sliding part 25 to return to its original position, and the welding head 26 is lifted. The up-and-down movement frequency of the welding head 26 is controlled by the speed of the motor 211 to control the spot welding speed, so as to ensure that the heat of each weld is consistent, avoid overheating or incomplete fusion, and improve the consistency of the weld nugget. The speed of the motor 211 can be adjusted to adapt to materials with different thermal conductivity.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A spot welding device for a cold welding machine, comprising a support (1), characterized in that, The support (1) has a slide rail groove (12) on its side wall, and also includes: The spot welding part (2) is slidably installed in the slide rail groove (12). A rotating part (24) is rotatably installed inside the spot welding part (2). A sliding part (25) is slidably installed inside the spot welding part (2). The rotating part (24) rotates and drives the sliding part (25) to slide up and down to perform spot welding.

2. The cold welding machine spot welding device according to claim 1, characterized in that, The support (1) has a clamping groove (11) inside. Two telescopic grooves (111) are symmetrically opened on the side wall of the clamping groove (11). A clamping plate (112) is slidably installed in the telescopic groove (111). Two connecting springs (113) are fixedly installed on one side of the clamping plate (112). The other end of the connecting spring (113) is fixedly installed on the inner side wall of the telescopic groove (111). A tightening screw hole communicating with the clamping groove (11) is opened on the side wall of the support (1). A tightening bolt (114) is installed in the thread of the tightening screw hole.

3. The cold welding machine spot welding device according to claim 1, characterized in that, A lead screw (121) is rotatably installed in the slide rail groove (12), with one end of the lead screw (121) passing through the support (1) and exposed to the outside.

4. The cold welding machine spot welding device according to claim 1, characterized in that, The spot welding part (2) includes a mounting housing (21), and a mounting groove (23) is provided on the lower surface of the mounting housing (21). A lead screw nut (22) is fixedly installed on one side of the mounting housing (21). The lead screw nut (22) is slidably installed in the slide rail groove (12). The lead screw nut (22) is a T-shaped structure that is adapted to the slide rail groove (12). The lead screw nut (22) is threadedly engaged with the lead screw (121).

5. The cold welding machine spot welding device according to claim 1, characterized in that, The rotating part (24) is rotatably installed in the mounting groove (23). The rotating part (24) includes a rotating wheel (241). Several protrusions (243) are fixedly installed in a ring array on the arc wall of the rotating wheel (241). The protrusions (243) are arc-shaped. A rotating shaft (242) is fixedly installed at the center of the side wall of the rotating wheel (241).

6. The cold welding machine spot welding device according to claim 4, characterized in that, The mounting housing (21) has a mounting hole (232) that connects to the mounting groove (23) on its side wall. One end of the rotating shaft (242) is rotatably installed in the mounting hole (232). A motor (211) is fixedly installed on the side wall of the mounting housing (21), and the output shaft of the motor (211) is fixedly connected to the rotating shaft (242).

7. The cold welding machine spot welding device according to claim 4, characterized in that, The mounting groove (23) has two symmetrically arranged limiting grooves (231) on its side wall. The sliding part (25) is slidably installed between the two limiting grooves (231). The sliding part (25) includes a clamping block (251). An mounting plate (252) is fixedly installed on the upper end of the clamping block (251). Several return springs (253) are fixedly installed on the upper surface of the mounting plate (252). The other end of the return spring (253) is fixedly installed in the mounting groove (23).

8. The cold welding machine spot welding device according to claim 7, characterized in that, The clamping block (251) has two limiting blocks (255) symmetrically fixedly installed on its side wall. The limiting blocks (255) are slidably installed in the limiting groove (231). The limiting blocks (255) are T-shaped structures that are adapted to the limiting groove (231).

9. The cold welding machine spot welding device according to claim 7, characterized in that, An mounting block (254) is fixedly installed on the upper end of the clamping block (251). The upper surface of the mounting block (254) is arc-shaped. A fixing groove (256) is opened at the lower end of the clamping block (251). The side wall of the fixing groove (256) is arc-shaped. A welding head (26) is fixedly installed in the fixing groove (256). A positioning screw hole (257) communicating with the fixing groove (256) is opened on the side wall of the clamping block (251). A positioning bolt is threaded in the positioning screw hole (257).

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