Sheet metal part machining spot welding device

Abstract

The invention relates to the technical field of sheet metal part welding machining, and particularly discloses a sheet metal part machining spot welding device which comprises an operation table and a mounting frame, the mounting frame is mounted on the top surface of the operation table, an electric push rod is arranged on the top surface of the mounting frame, and a first connecting plate is mounted at the tail end of a telescopic shaft of the electric push rod; a spot welding machine is arranged on the bottom face of the first connecting plate, a clamping assembly is installed on the end face of the operation table, a positioning assembly is arranged between the first connecting plate and the operation table, an air cooling assembly is arranged on the top face of the operation table, and an adjusting assembly is arranged between the end face of the operation table and the air cooling assembly. According to the sheet metal part machining spot welding device, the positioning assembly and the clamping assembly are arranged, when the device is used, through mutual cooperation of structures in the assemblies, when the first connecting plate drives the spot welding machine to descend for welding, the positioning assembly is driven to operate, and therefore friction positioning is conducted on a sliding rod in the clamping assembly; the stability of the sheet metal part positioned in the clamping assembly is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet metal welding processing, and in particular relates to a sheet metal processing spot welding device. Background Art

[0002] Spot welding is a specific application of resistance welding, which uses the resistance heat generated by the current passing through the contact surface and adjacent areas of the workpiece for welding. Due to its advantages such as high efficiency, high strength, strong adaptability, good cost-effectiveness and environmental friendliness, it is widely used in the field of sheet metal processing.

[0003] The existing utility model patent is a resistance welding device for thin-walled sheet metal parts (publication number: CN217193225U). The device uses the elastic effect of spring b to ensure that the circuit connector is always in contact with the bottom surface of the sheet metal part, which greatly improves the welding efficiency of the sheet metal parts and can effectively reduce the deformation of the sheet metal parts during welding. The resistance welding is completed by the electrode conduction of the spot welder, which is simple to operate and has high welding processing accuracy and quality for sheet metal parts. In the prior art, the spring a is used to clamp the sheet metal during welding. In actual use, the sheet metal can be stably clamped between the clamps by using the spring. However, the vibration of the equipment and the external vibration during the welding process will cause the sheet metal to shake along the expansion and contraction direction of the spring. This shaking will not only affect the quality of the welded joint, but may also cause welding defects (such as cold welding, leaking welding or uneven welding points, etc.); Therefore, this solution proposes a sheet metal processing spot welding device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a sheet metal processing spot welding device to solve the problem that the vibration of the equipment and the influence of external vibration during the welding process in the prior art will cause the sheet metal to shake along the direction of spring expansion and contraction, thereby leading to problems such as cold welding, leaking welding or uneven welding spots.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sheet metal processing spot welding device, comprising an operating table and a mounting frame, the top surface of the operating table is installed with the mounting frame, the top surface of the mounting frame is provided with an electric push rod, the electric push rod is used to adjust the welding height, the end of the telescopic shaft of the electric push rod is installed with a connecting plate 1, the bottom surface of the connecting plate 1 is provided with a spot welder, the spot welder is used to perform welding operations, the end surface of the operating table is installed with a clamping assembly, the clamping assembly is used to position the welded sheet metal, a positioning assembly is provided between the connecting plate 1 and the operating table, the positioning assembly is used to stabilize the positioning of the clamping assembly on the sheet metal, the top surface of the operating table is provided with an air cooling assembly, the air cooling assembly is used to air-cool and dissipate heat for the welded sheet metal on the clamping assembly, an adjustment assembly is provided between the end surface of the operating table and the air cooling assembly, the adjustment assembly is used to automatically adjust the wind speed entering the clamping assembly during the welding process; The positioning assembly includes a second connecting plate, and the outer walls of the front and rear sides of the first connecting plate are symmetrically provided with the second connecting plate; The outer walls on both sides of the operating table are symmetrically provided with grooves, a positioning frame is installed in the inner cavity of the groove, a rectangular frame is installed in the middle of the inner cavity of the positioning frame, a mounting groove is opened on the side wall of the positioning frame, and a connecting frame 1 is installed in the inner cavity of the mounting groove; The connecting frame 1 is slidably mounted with a moving block, a side of the moving block away from the positioning frame is symmetrically mounted with a positioning block, a side of the connecting frame 1 away from the positioning frame is symmetrically opened with a slide groove 1, a positioning block is slidably mounted in the slide groove 1; A connecting rod is slidably installed in the inner cavity of the rectangular frame, and the connecting rod slides through the bottom surface of the positioning frame; The end surface of the moving block close to the positioning frame is designed to be arc-shaped.

[0006] Preferably, the clamping assembly comprises a mounting frame, the mounting frame is mounted on the top surface of the operating table, sliding rods are slidably mounted on the outer walls on both sides of the mounting frame, and a clamping plate is mounted on one side of the sliding rod located in the inner cavity of the mounting frame; A support frame is connected between the two clamping plates on the same side, a spring 1 is installed on the side of the clamping plate away from the support frame, the side of the spring 1 away from the clamping plate is connected to the inner cavity side wall of the installation frame, and the sliding rod is located in the inner cavity of spring 1.

[0007] Preferably: an air outlet is provided on the left side of the inner cavity of the installation frame, and a connecting pipe is installed on the right side of the outer wall of the installation frame, wherein the connecting pipe connects the inner cavity of the installation frame with the outside; An air cooling component is installed at one end of the connecting pipe away from the installation frame.

[0008] Preferably: the air cooling assembly comprises an air inlet pipe 1 and a support block, and the side wall of the support block is connected to an operating table; A fan is installed on the end face of the support block, and the fan is used to generate flowing gas to physically cool the welded sheet metal parts. The air outlet pipe of the fan is installed with a fixed plate 1, and the side of the fixed plate 1 away from the fan is connected to the air inlet pipe 2 by bolts, and the side of the air inlet pipe 2 away from the fixed plate 1 is installed with a fixed plate 2, and the fixed plate 2 is connected to the air inlet pipe 1 by bolts, and the side of the air inlet pipe 1 away from the fixed plate 2 is connected to a connecting pipe.

[0009] Preferably, a plurality of through slots are evenly arranged on the top surface of the second air inlet pipe, a group of clamping frames are respectively arranged on two adjacent through slots, and a plurality of filter components are evenly arranged on the bottom surface of the second air inlet pipe.

[0010] Preferably: the filter assembly includes a connecting plate three, a filter screen is installed on the bottom surface of the connecting plate three, the filter screen is used to filter impurities in the airflow in the input installation frame, the side of the filter screen away from the connecting plate three is connected to the bottom surface of the inner cavity of the air inlet pipe two, a plurality of elastic ropes are evenly distributed on the top surface of the connecting plate three, the end of the elastic rope away from the connecting plate three is connected to a hook, and the hook is clamped with a clamping frame.

[0011] Preferably: an adjustment component is installed between the air inlet pipe 1 and the operating table, a slide groove 2 is provided on the top surface of the air inlet pipe 1, and the adjustment component includes a transfer plate.

[0012] Preferably: a transfer plate is installed on the top surface of the operating table, a gear is rotatably installed in the middle of the transfer plate, a connecting frame 2 is installed on one side above the side wall of the transfer plate, a spring 2 is installed on the bottom surface of the inner cavity of the connecting frame 2, a pressing block is installed on the top surface of the spring 2, a plug-in rod is installed on the bottom surface of the pressing block, the plug-in rod is located in the inner cavity of the spring 2, the plug-in rod passes through the bottom surface of the connecting frame 2 and extends to the bottom, and a rack 1 is installed on the side wall of the plug-in rod.

[0013] Preferably: a closing plate is slidably installed in the inner cavity of the second slide groove, a second rack is installed above the side wall of the closing plate, the second rack is meshed with a gear, and the gear is meshed with the first rack.

[0014] Preferably, a pressing plate is installed on one side of a top surface of the connecting plate, and the pressing plate is located directly above the pressing block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a positioning component and a clamping component are arranged in a sheet metal processing spot welding device. When the device is used, the structures in the above components cooperate with each other. When the connecting plate drives the spot welding machine to descend for welding, the positioning component is driven to operate so as to frictionally position the sliding rod in the clamping component, thereby improving the stability of the sheet metal positioned in the clamping component, and solving the problem that the vibration of the equipment during welding in the prior art is affected by external vibration, which causes the sheet metal to shake along the direction of the spring expansion and contraction, thereby causing problems such as false welding, leaking welding or uneven welding spots; 2. The present invention provides an air cooling assembly in a sheet metal processing spot welding device. Through the cooperation between various structures in the air cooling assembly, the effect of physically cooling the sheet metal being welded in the clamping assembly is achieved, which solves the problem that the high temperature generated during welding will cause the temperature of the weld area to rise rapidly. If the temperature is not cooled in time, the weld may be overheated, resulting in coarse metal grains and affecting the mechanical properties of the weld. 3. The present invention sets an air cooling component and an adjusting component in a sheet metal processing spot welding device. When the device is used, the various structures in the above components cooperate with each other, so that when the connecting plate is lowered, the adjusting component is driven to automatically adjust the wind speed of the air cooling component entering the installation frame, which solves the problem that when the sheet metal thickness is relatively thin, the wind speed is too high, which will cause the sheet metal to shake during welding, resulting in reduced welding quality; 4. The present invention arranges an air cooling component, a clamping frame and a filter component in a sheet metal processing spot welding device. When the device is in use, the structures in the above components cooperate with each other, the elastic rope and the clamping frame are clamped together, the filter is pulled up and unfolded, and the filter is laid flat on the air outlet path of the second air inlet pipe, so as to filter large particles of dust in the air flow used for cooling, thereby avoiding the problem of particulate matter in the air flow generated by the fan affecting the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the clamping assembly of the present invention; Figure 4 This is an installation diagram of the positioning assembly of the present invention; Figure 5 This is an exploded view of the positioning assembly of the present invention; Figure 6 It is a cross-sectional view of the adjustment assembly of the present invention; Figure 7 It is a cross-sectional view of the air cooling assembly of the present invention; Figure 8 for Figure 7 The enlarged schematic diagram at A in the middle; Fig. 9It is a schematic diagram of the filter assembly of the present invention; Fig.10 This is a schematic diagram of the structure of the through slot of the present invention.

[0017] In the figure: 1, operating table; 2, clamping assembly; 201, mounting frame; 202, sliding rod; 203, spring 1; 204, clamping plate; 205, supporting frame; 206, connecting pipe; 207, air outlet; 3, mounting frame; 4, electric push rod; 5, connecting plate 1; 6, positioning assembly; 601, connecting plate 2; 602, connecting rod; 603, positioning frame; 604, rectangular frame; 605, mounting groove; 606, connecting frame 1; 607, slide groove 1; 608, moving block; 609, positioning block; 7, air cooling assembly; 701, air inlet pipe 1; 702, slide groove 2; 70 3. Air inlet pipe 2; 704. Fan; 705. Through slot; 706. Fixed plate 1; 707. Fixed plate 2; 708. Support block; 8. Adjustment assembly; 801. Transfer plate; 802. Connecting frame 2; 803. Pressing block; 804. Spring 2; 805. Connecting rod; 807. Rack 1; 808. Gear; 809. Rack 2; 8010. Closing plate; 9. Spot welder; 10. Pressing plate; 11. Control module; 12. Groove; 14. Snap-in frame; 15. Filter assembly; 151. Connecting plate 3; 152. Filter; 153. Elastic rope; 154. Hook. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1 - Fig.10 As shown, the present invention provides a sheet metal processing spot welding device, including an operating table 1 and a mounting frame 3, the top surface of the operating table 1 is installed with the mounting frame 3, the top surface of the mounting frame 3 is provided with an electric push rod 4, the electric push rod 4 is used to adjust the welding height, the end of the telescopic shaft of the electric push rod 4 is installed with a connecting plate 5, the bottom surface of the connecting plate 5 is provided with a spot welder 9, the spot welder 9 is used to perform welding operations, the end surface of the operating table 1 is installed with a clamping assembly 2, the clamping assembly 2 is used to position the welded sheet metal, a positioning assembly 6 is provided between the connecting plate 5 and the operating table 1, the positioning assembly 6 is used to stabilize the positioning of the clamping assembly 2 on the sheet metal, the top surface of the operating table 1 is provided with an air cooling assembly 7, the air cooling assembly 7 is used to air-cool the welded sheet metal on the clamping assembly 2, an adjustment assembly 8 is provided between the end surface of the operating table 1 and the air cooling assembly 7, the adjustment assembly 8 is used to automatically adjust the wind speed entering the clamping assembly 2 during the welding process; Among them, a control module 11 is arranged on the outer wall of the operating table 1, and the control module 11 is connected to each electrical device in the device through a wire and controls the operation of the electrical devices; Furthermore, a loop connector is provided on the top surface of the operating table 1. The loop connector has the same structure and working principle as the loop connector in the existing utility model patent for a resistance welding device for thin-walled sheet metal parts (publication number: CN217193225U), and will not be described in detail here. The positioning assembly 6 includes a second connecting plate 601, and the outer walls of the front and rear sides of the connecting plate 1 5 are symmetrically provided with the second connecting plate 601; The outer walls of the front and rear sides of the operating table 1 are symmetrically provided with grooves 12, a positioning frame 603 is installed in the inner cavity of the groove 12, a rectangular frame 604 is installed in the middle of the inner cavity of the positioning frame 603, a mounting groove 605 is opened on the side wall of the positioning frame 603, and a connecting frame 606 is installed in the inner cavity of the mounting groove 605; The connecting frame 1 606 is slidably mounted with a moving block 608, and a positioning block 609 is symmetrically mounted on one side of the moving block 608 away from the positioning frame 603. A sliding groove 1 607 is symmetrically opened on one side of the connecting frame 1 606 away from the positioning frame 603, and a positioning block 609 is slidably mounted in the sliding groove 1 607; A connecting rod 602 is slidably installed in the inner cavity of the rectangular frame 604, and the connecting rod 602 slides through the bottom surface of the positioning frame 603; The end surface of the moving block 608 close to the positioning frame 603 is designed to be arc-shaped; The arc-shaped design of the moving block 608 facilitates the connection rod 602 to smoothly push the moving block 608 to move when it descends; The clamping assembly 2 includes a mounting frame 201, the mounting frame 201 is mounted on the top surface of the operating table 1, sliding rods 202 are slidably mounted on the outer walls of the front and rear sides of the mounting frame 201, and a clamping plate 204 is mounted on one side of the sliding rod 202 located in the inner cavity of the mounting frame 201; A support frame 205 is connected between the two clamping plates 204 on the same side, a spring 203 is installed on the side of the clamping plate 204 away from the support frame 205, and the side of the spring 203 away from the clamping plate 204 is connected to the inner cavity side wall of the installation frame 201, and the sliding rod 202 is located in the inner cavity of the spring 203; The side wall of the support frame 205 is hollow, which facilitates airflow in the installation frame 201; In this embodiment, before the sheet metal parts are welded, the sheet metal parts are placed on the top surfaces of the two support frames 205, and the clamping plates 204 clamp the sheet metal parts under the action of the spring 1 203; Then, the electric push rod 4 is started to drive the second connecting plate 601 and the connecting rod 602 to descend. When the connecting rod 602 descends, the connecting rod 602 will squeeze the moving block 608, and the moving block 608 will slide toward the inner cavity of the connecting frame 1 606; Finally, the positioning block 609 on the movable block 608 will be squeezed with the sliding rod 202, so that the sliding rod 202 and the mounting frame 201 are squeezed, thereby increasing the friction between the sliding rod 202 and the mounting frame 201, and increasing the stability of the sliding rod 202 during welding, thereby solving the problem in the prior art that the vibration of the equipment and the influence of external vibration during the welding process will cause the sheet metal to shake along the direction of the spring expansion and contraction.

[0020] In a further embodiment, referring to Figure 1 - Fig.10 An air outlet 207 is provided on the left side of the inner cavity of the installation frame 201, and a connecting pipe 206 is installed on the right side of the outer wall of the installation frame 201, and the connecting pipe 206 connects the inner cavity of the installation frame 201 with the outside; An air cooling assembly 7 is installed at one end of the connecting pipe 206 away from the installation frame 201 .

[0021] The air cooling assembly 7 includes an air inlet pipe 701 and a support block 708, and the side wall of the support block 708 is connected to the operating table 1; A fan 704 is installed on the end surface of the support block 708. The fan 704 is used to generate flowing gas to physically cool the welded sheet metal parts. A fixing plate 1 706 is installed on the air outlet pipe of the fan 704. The side of the fixing plate 1 706 away from the fan 704 is connected to the air inlet pipe 2 703 by bolts. The side of the air inlet pipe 2 703 away from the fixing plate 1 706 is installed with a fixing plate 2 707. The fixing plate 2 707 is connected to the air inlet pipe 1 701 by bolts. The side of the air inlet pipe 1 701 away from the fixing plate 2 707 is connected to the connecting pipe 206. In a further embodiment, referring to Figure 1 - Fig.10 The top surface of the second air inlet pipe 703 is evenly provided with a plurality of through slots 705, and two adjacent through slots 705 are respectively provided with a set of snap-in frames 14, and the bottom surface of the second air inlet pipe 703 is evenly provided with a plurality of filter components 15; The filter assembly 15 includes a connecting plate three 151, and a filter screen 152 is installed on the bottom surface of the connecting plate three 151. The filter screen 152 is used to filter impurities in the airflow in the input installation frame 201. The side of the filter screen 152 away from the connecting plate three 151 is connected to the bottom surface of the inner cavity of the air inlet pipe two 703, and a plurality of elastic ropes 153 are evenly distributed on the top surface of the connecting plate three 151. The end of the elastic rope 153 away from the connecting plate three 151 is connected to a hook 154, and the hook 154 is clamped with the clamping frame 14.

[0022] An adjustment component 8 is installed between the air inlet pipe 1 701 and the operating table 1. A slide groove 2 702 is provided on the top surface of the air inlet pipe 1 701. The adjustment component 8 includes a transfer plate 801. In this embodiment, the fan 704 is started during the welding process, so that the airflow generated by the fan 704 passes through the air inlet pipe 1 701, the air inlet pipe 1 701 and the connecting pipe 206, finally enters the installation frame 201, and is discharged from the air outlet 207, thereby achieving the effect of cooling the sheet metal being welded; Furthermore, during the use of the device, a hook made of bent wire is used to hook the connecting plate 3 151 in the inner cavity of the air inlet pipe 2 703 upward, and then the hook 154 is pulled and the hook 154 is snapped onto the snap-on frame 14 to filter large particles of dust in the incoming airflow. At the same time, when the filtering effect of a filter component 15 is reduced after long-term use, it can be put down and another filter component 15 can be installed according to the above operation, thereby reducing the maintenance time of the device and improving the working efficiency of the device.

[0023] In a further embodiment, referring to Figure 1 - Figure 7 A transfer plate 801 is installed on the top surface of the operating table 1, a gear 808 is rotatably installed in the middle of the transfer plate 801, a connecting frame 802 is installed on one side above the side wall of the transfer plate 801, a spring 804 is installed on the bottom surface of the inner cavity of the connecting frame 802, a pressing block 803 is installed on the top surface of the spring 804, a plug-in rod 805 is installed on the bottom surface of the pressing block 803, the plug-in rod 805 is located in the inner cavity of the spring 804, the plug-in rod 805 passes through the bottom surface of the connecting frame 802 and extends to the bottom, and a rack 807 is installed on the side wall of the plug-in rod 805; Among them, the thickness of the sheet metal is different, the final welding height of the spot welder 9 is also different, and the flexibility of the sheet metal is also different, that is, the thinner the sheet metal is, the easier it is to shake; A closing plate 8010 is slidably installed in the inner cavity of the second slideway 702, a second rack 809 is installed on the side wall of the closing plate 8010, the second rack 809 is meshed with a gear 808, and the gear 808 is meshed with a first rack 807; Among them, when the output air volume of the fan 704 remains unchanged, if the cross-sectional area of ​​the air inlet pipe 701 is reduced, according to the relationship formula between air volume and cross-sectional area Q=V×A (where Q is air volume, V is wind speed, and A is cross-sectional area), it can be concluded that the wind speed V will increase as the cross-sectional area A decreases, so when the closing plate 8010 closes less air inlet pipe 701, the wind speed is smaller, and the impact on the sheet metal is smaller; A pressing plate 10 is installed on one side of the top surface of the connecting plate 15, and the pressing plate 10 is located directly above the pressing block 803; In this embodiment, when the connecting plate 15 drives the spot welder 9 to descend for welding, the thinner the sheet metal part, the more the spot welder 9 descends. At this time, the pressing plate 10 on the connecting plate 15 will squeeze the pressing block 803, and then the pressing block 803 compresses the spring 2 804 and drives the plug rod 805 to descend. With the descent of the plug rod 805, the rack 1 807 will also descend synchronously. The descent of the rack 1 807 will drive the gear 808 to rotate. When the gear 808 rotates, it will drive the gear 2 809 meshing with it to rise, and then the closing plate 8010 connected to the gear 2 809 will also rise synchronously. At this time, the closing plate 8010 reduces the airflow obstruction caused by the fan 704, thereby adjusting the flow rate of the gas in the air inlet pipe 1 701 to prevent the excessively fast flow rate from impacting the thin sheet metal in the clamping component 2; Furthermore, the thinner the sheet metal is, the greater the height of the connection plate 5 and the spot welder 9 is lowered, and at the same time, the less the amount of the closing plate 8010 closing the air inlet pipe 701 is, so that the air flow speed of the air inlet pipe 701 is slower; the thicker the sheet metal is, the less the height of the connection plate 5 and the spot welder 9 is lowered, and the more the closing plate 8010 closes the air inlet pipe 701, so that the air flow speed of the air inlet pipe 701 is faster, so that the air cooling component 7 can automatically adjust the air flow speed injected into the clamping component 2; When the connecting plate 1 5 is lifted, the pressing plate 10 will be out of contact with the pressing block 803 , and then the pressing block 803 will be reset under the action of the spring 2 804 .

[0024] 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 sheet metal processing spot welding device, comprising an operating table (1) and a mounting frame (3), characterized in that: The top surface of the operating table (1) is installed with a mounting frame (3), the top surface of the mounting frame (3) is provided with an electric push rod (4), the electric push rod (4) is used to adjust the welding height, the end of the telescopic shaft of the electric push rod (4) is installed with a connecting plate (5), the bottom surface of the connecting plate (5) is provided with a spot welder (9), the spot welder (9) is used to perform welding operations, the end surface of the operating table (1) is installed with a clamping assembly (2), the clamping assembly (2) is used to position the sheet metal to be welded, the connecting plate A positioning component (6) is arranged between the first (5) and the operating table (1), the positioning component (6) is used to stabilize the positioning of the clamping component (2) on the sheet metal part, the top surface of the operating table (1) is provided with an air cooling component (7), the air cooling component (7) is used to air cool the welded sheet metal on the clamping component (2), an adjustment component (8) is arranged between the end surface of the operating table (1) and the air cooling component (7), the adjustment component (8) is used to automatically adjust the wind speed entering the clamping component (2) during the welding process; The positioning assembly (6) comprises a second connecting plate (601), and the outer walls on both sides of the front and rear of the first connecting plate (5) are symmetrically provided with second connecting plates (601); The operating table (1) is symmetrically provided with grooves (12) on the outer walls on both sides of the front and rear sides, a positioning frame (603) is installed in the inner cavity of the groove (12), a rectangular frame (604) is installed in the middle of the inner cavity of the positioning frame (603), a mounting groove (605) is provided on the side wall of the positioning frame (603), and a connecting frame (606) is installed in the inner cavity of the mounting groove (605); The connecting frame 1 (606) is slidably mounted with a moving block (608), a positioning block (609) is symmetrically mounted on one side of the moving block (608) away from the positioning frame (603), a sliding groove 1 (607) is symmetrically opened on one side of the connecting frame 1 (606) away from the positioning frame (603), and a positioning block (609) is slidably mounted in the sliding groove 1 (607); A connecting rod (602) is slidably installed in the inner cavity of the rectangular frame (604), and the connecting rod (602) slidably penetrates the bottom surface of the positioning frame (603); The end surface of the moving block (608) close to the positioning frame (603) is designed to be arc-shaped.

2. A sheet metal processing spot welding device according to claim 1, characterized in that: The clamping assembly (2) comprises a mounting frame (201), the mounting frame (201) being mounted on the top surface of the operating table (1), sliding rods (202) being slidably mounted on the front and rear outer walls of the mounting frame (201), and a clamping plate (204) being mounted on one side of the sliding rod (202) located in the inner cavity of the mounting frame (201); A support frame (205) is connected between the two clamping plates (204) located on the same side, a spring (203) is installed on the side of the clamping plate (204) away from the support frame (205), and the side of the spring (203) away from the clamping plate (204) is connected to the inner cavity side wall of the installation frame (201), and the sliding rod (202) is located in the inner cavity of the spring (203).

3. A sheet metal processing spot welding device according to claim 2, characterized in that: An air outlet (207) is provided on the left side of the inner cavity of the installation frame (201), and a connecting pipe (206) is installed on the right side of the outer wall of the installation frame (201), wherein the connecting pipe (206) connects the inner cavity of the installation frame (201) with the outside; An air cooling assembly (7) is installed at one end of the connecting pipe (206) away from the installation frame (201).

4. A sheet metal processing spot welding device according to claim 3, characterized in that: The air cooling component (7) comprises an air inlet pipe (701) and a support block (708), and the side wall of the support block (708) is connected to an operating table (1); The support block (708) is provided with a fan (704) installed on the end face thereof, the fan (704) being used to generate flowing gas for physically cooling the welded sheet metal parts, the air outlet pipe of the fan (704) being provided with a fixing plate 1 (706), the side of the fixing plate 1 (706) away from the fan (704) being connected to an air inlet pipe 2 (703) via bolts, the side of the air inlet pipe 2 (703) away from the fixing plate 1 (706) being provided with a fixing plate 2 (707), the fixing plate 2 (707) being connected to an air inlet pipe 1 (701) via bolts, the side of the air inlet pipe 1 (701) away from the fixing plate 2 (707) being connected to a connecting pipe (206).

5. A sheet metal processing spot welding device according to claim 4, characterized in that: The top surface of the second air inlet pipe (703) is evenly provided with a plurality of through slots (705), and two adjacent through slots (705) are respectively provided with a group of snap-in frames (14), and the bottom surface of the second air inlet pipe (703) is evenly provided with a plurality of filter components (15).

6. A sheet metal processing spot welding device according to claim 5, characterized in that: The filter assembly (15) comprises a third connecting plate (151), a filter screen (152) being installed on the bottom surface of the third connecting plate (151), the filter screen (152) being used to filter impurities in the airflow in the input installation frame (201), the side of the filter screen (152) away from the third connecting plate (151) being connected to the bottom surface of the inner cavity of the second air inlet pipe (703), a plurality of elastic ropes (153) being evenly distributed on the top surface of the third connecting plate (151), the end of the elastic rope (153) away from the third connecting plate (151) being connected to a hook (154), and the hook (154) being clamped to the clamping frame (14).

7. A sheet metal processing spot welding device according to claim 4, characterized in that: An adjustment component (8) is installed between the air inlet pipe (701) and the operating table (1), a slide groove (702) is provided on the top surface of the air inlet pipe (701), and the adjustment component (8) includes a transfer plate (801).

8. A sheet metal processing spot welding device according to claim 7, characterized in that: A transfer plate (801) is installed on the top surface of the operating table (1), a gear (808) is rotatably installed in the middle of the transfer plate (801), a connecting frame (802) is installed on one side above the side wall of the transfer plate (801), a spring (804) is installed on the bottom surface of the inner cavity of the connecting frame (802), a pressing block (803) is installed on the top surface of the spring (804), a plug-in rod (805) is installed on the bottom surface of the pressing block (803), the plug-in rod (805) is located in the inner cavity of the spring (804), the plug-in rod (805) passes through the bottom surface of the connecting frame (802) and extends to the bottom, and a rack (807) is installed on the side wall of the plug-in rod (805).

9. The sheet metal processing spot welding device according to claim 7, characterized in that: A closing plate (8010) is slidably installed in the inner cavity of the second slide groove (702), and a rack (809) is installed above the side wall of the closing plate (8010). The rack (809) is meshed with a gear (808), and the gear (808) is meshed with a rack (807).

10. The sheet metal processing spot welding device according to claim 1, characterized in that: A pressing plate (10) is installed on one side of the top surface of the connecting plate 1 (5), and the pressing plate (10) is located directly above the pressing block (803).

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