Sheet metal welding equipment

Abstract

The present invention relates to the technical field of sheet metal welding, and discloses a sheet metal welding device, comprising a welding platform and an extension part connected to the welding platform; the surface of the welding platform is evenly distributed with clamping grooves, and a clamping motor and a probe are respectively arranged in the middle of the welding platform, and the clamping motor drives a clamping plate to slide in the clamping groove, and the clamping plate and the probe are respectively used to clamp and position the sheet metal weldment, and a steering wheel for driving the positioned sheet metal weldment to rotate is installed on the clamping plate; the present application realizes clamping of the sheet metal weldment by means of a clamping motor and a clamping plate, and the probe detects the edge of the sheet metal weldment to avoid deformation caused by squeezing of the clamping plate, and is particularly suitable for welding of sheet metal weldments with notches, and can ensure that when welding irregular special-shaped sheet metal weldments, the welding part of the weldment to be welded is subjected to extrusion force and fits with the welding part of the special-shaped sheet metal weldment, thereby meeting the welding requirements of special-shaped weldments.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal welding, in particular to sheet metal welding equipment. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates, covering a variety of operations such as shearing, punching / cutting / combining, folding, welding, riveting, splicing, etc. Among them, the semi-closed cone barrel welded by round plates and strip plates has important applications in many industries due to its unique structure and function.

[0003] In the field of material transportation, semi-closed cone barrels can be used as hoppers to store and transport various granular or powdered materials. Its unique shape can effectively prevent leakage and spillage during material transportation, improving transportation efficiency and safety. In the chemical industry, semi-closed cone barrels can be used as part of a reaction vessel to contain and process various chemicals. Its good sealing and structural strength can ensure the smooth progress of chemical reactions while reducing the pollution and harm of chemicals to the environment. In addition, in the fields of construction, machinery manufacturing, etc., semi-closed cone barrels are also widely used, such as as connectors for ventilation ducts, shells of mechanical equipment, etc.

[0004] However, the existing technology still faces some difficulties when making this kind of semi-closed conical barrel. First, conventional welding is usually unable to perform two-sided welding at the same time, resulting in uneven heat distribution during the welding process, which can easily cause welding deformation, and thus affect the dimensional accuracy and appearance quality of the cone barrel. Second, during the welding process, it is difficult for conventional welding tables to conveniently fix the inclination angle and relative position between the workpiece to be welded and the weldment, which will also have an adverse effect on the dimensional accuracy and appearance quality of the cone barrel. Due to the existence of these problems, the quality and performance of the semi-closed conical barrels currently produced may not fully meet the needs of practical applications. Therefore, it is necessary to improve and innovate the relevant technologies to improve the production quality and efficiency of semi-closed conical barrels. Summary of the invention

[0005] The purpose of the present invention is to provide a sheet metal welding device, aiming to solve the problem that the existing welding platform affects the dimensional accuracy and appearance quality when welding a semi-sealed cone barrel.

[0006] The present invention is implemented as follows: a sheet metal welding device includes a welding platform and an extension connected to the welding platform;

[0007] The surface of the welding platform is evenly distributed with clamping grooves, and a clamping motor and a probe are respectively arranged in the middle of the welding platform. The clamping motor drives a clamping plate to slide in the clamping groove. The clamping plate and the probe are respectively used to clamp and position the sheet metal weldment, and a steering wheel for driving the positioned sheet metal weldment to rotate is installed on the clamping plate;

[0008] The extension portion is provided with a slide groove, in which a seat is slidably installed to abut against the edge of the sheet metal weldment, a clamping plate of the workpiece to be welded is provided on the seat, a welding part is installed on the clamping plate of the workpiece to be welded, the seat is used to adjust the inclination angle of the workpiece to be welded, and welding parts acting on both sides of the clamping plate of the workpiece to be welded are also installed on the clamping plate of the workpiece to be welded, so as to be used for synchronous welding operation on both sides of the clamping plate of the workpiece to be welded.

[0009] Preferably, the internal bearing of the clamping groove is connected with a clamping rod, the output shaft of the clamping motor is sleeved with a driving helical gear, and the shaft end of the clamping rod is sleeved with a transmission helical gear meshing with the driving helical gear;

[0010] A steering motor is installed on one side of the clamping plate, and an output shaft of the steering motor is fixed to the wheel axle of the steering wheel.

[0011] Preferably, a first electromagnetic ring is installed at the end of the extension portion located at the slide slot, and a pulling rod extending into the slide slot and having an end connected to the end of the stop is arranged inside the first electromagnetic ring;

[0012] The outside of the pulling rod is sleeved with a first return spring, the first return spring is located in the slide slot, and two ends of the first return spring respectively contact with the end of the stop seat and the inner wall of the slide slot.

[0013] Preferably, a push-pull groove is provided on the top of the stop seat, the stop seat is located in the push-pull groove, a bearing is connected to a push-pull rod, and the external thread of the push-pull rod is connected to a slider that slides in the push-pull groove;

[0014] The rotating shaft of the clamping plate of the workpiece to be welded is connected to the end of the stop seat, and a diagonal support rod is connected to the rotating shaft between the sliding block and the clamping plate of the workpiece to be welded.

[0015] Preferably, a second electromagnetic ring is installed at the end of the clamping plate of the workpiece to be welded, a lifting rod is arranged inside the second electromagnetic ring, a first limit block is arranged at the end of the lifting rod, and the lifting rod is located between the second electromagnetic ring and the first limit block and is externally sleeved with a second return spring.

[0016] Preferably, an opening and closing plate is provided at the other end of the lifting rod, the internal bearing of the opening and closing plate is connected to the opening and closing rod, the external thread of the opening and closing rod is connected to the opening and closing seat, and the lifting rod is connected to the bottom of the opening and closing seat;

[0017] A clamping piece arranged parallel to the opening and closing rod is installed at the end of the opening and closing plate, and the workpiece to be welded is clamped and fixed between the clamping piece and the clamping plate of the workpiece to be welded.

[0018] Preferably, a welding window is provided at the bottom of the clamping plate of the workpiece to be welded, inner rollers are installed on both sides of the welding window of the clamping plate of the workpiece to be welded, outer rollers are provided at the ends of the clamping piece, and the clamping piece and the clamping plate of the workpiece to be welded are respectively in contact with the surface of the workpiece to be welded through the outer rollers and the inner rollers.

[0019] Preferably, a pressure block is sleeved on the outside of the clip, and the pressure block acts on the top of the workpiece to be welded. A pressure spring is embedded on one side of the clip, and both ends of the pressure spring respectively contact the bottom of the opening and closing plate and the top of the pressure block.

[0020] Preferably, the welding piece includes a connecting seat and a third electromagnetic ring, wherein a welding gun penetrating the connecting seat is arranged in the third electromagnetic ring, and the welding gun is connected to both sides of the clamping plate of the welded piece through the connecting seat through a spring shaft;

[0021] A second limit block is arranged at the end of the welding gun, and the welding gun is located between the second limit block and the third electromagnetic ring, and a third return spring is sleeved on the outside of the welding gun.

[0022] The invention discloses a sheet metal welding device having the following beneficial effects:

[0023] 1. This application uses a clamping motor and a clamping plate to clamp sheet metal weldments. The probe detects the edge of the sheet metal weldment to avoid deformation caused by clamping plate extrusion. It is especially suitable for welding sheet metal weldments with notches. It can ensure that when welding irregular shaped sheet metal weldments, the welding part of the weldment to be welded is subjected to extrusion force and fits with the welding part of the shaped sheet metal weldment, thereby meeting the welding requirements of shaped weldments.

[0024] 2. The present application clamps the workpiece to be welded by inner and outer rollers so that when the sheet metal weldment rotates, the workpiece to be welded can be transmitted between the rollers to allow for continuous welding operations. The angle of the workpiece to be welded can be adjusted through the structural design of the support and the clamping plate of the workpiece to be welded, thereby keeping the angle of each welding part consistent during the welding process and improving the quality of the finished product.

[0025] 3. The design of the welding part of the present application can keep the end of the welding gun in contact with the welding part of the workpiece to be welded, and can adjust the length according to the depth of the welding part to ensure the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a sheet metal welding device provided by an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of a top view of a sheet metal welding device provided by an embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of a welding platform and an extension part of a sheet metal welding device provided by an embodiment of the present invention;

[0029] Figure 4 A sheet metal welding device provided by the embodiment of the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0030] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a welding pad of a sheet metal welding device provided by an embodiment of the present invention;

[0031] Figure 6 A sheet metal welding device provided by the embodiment of the present invention Figure 5 A schematic diagram of the partially enlarged structure at B in the middle;

[0032] Figure 7 The present invention provides a schematic diagram of the structure of a welding part of a sheet metal welding device.

[0033] Marking Description:

[0034] 1. Welding station; 2. Extension part; 3. Sheet metal weldment; 4. Parts to be welded;

[0035] 11. Clamping motor; 12. Clamping rod; 13. Clamping groove; 14. Clamping plate; 141. Steering motor; 142. Steering wheel; 15. Probe;

[0036] 21. slide groove; 22. first electromagnetic ring; 23. pulling rod; 24. stop seat; 25. clamping plate for workpiece to be welded; 26. welded workpiece;

[0037] 231, first return spring;

[0038] 241, push-pull groove; 242, push-pull rod; 243, slider; 244, diagonal support rod;

[0039] 251, second electromagnetic ring; 252, lifting rod; 253, second return spring; 254, opening and closing plate; 255, opening and closing rod; 256, opening and closing seat; 257, clip; 258, inner roller; 259, welding window;

[0040] 2521, first limit block; 2571, pressure spring; 2572, pressure block; 2573, outer roller;

[0041] 261. Connecting seat; 262. Third electromagnetic ring; 263. Welding gun; 264. Second limiting block; 265. Third return spring. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0045] In this embodiment:

[0046] Reference Figure 1 As shown, a preferred embodiment of the present invention is provided.

[0047] The sheet metal welding equipment of this embodiment includes a welding platform 1 and an extension part 2 connected to the welding platform 1;

[0048] The surface of the welding platform 1 is evenly distributed with clamping grooves 13, and a clamping motor 11 and a probe 15 are respectively arranged in the middle of the welding platform 1. The clamping motor 11 drives a clamping plate 14 to slide in the clamping groove 13. The clamping plate 14 and the probe 15 are respectively used to clamp and position the sheet metal weldment 3, and a steering wheel 142 for driving the positioning sheet metal weldment 3 to rotate is installed on the clamping plate 14;

[0049] It is worth noting that the probe 15 is used to detect the edge of the sheet metal weldment 3 to prevent the sheet metal weldment 3 from being deformed due to the extrusion of the clamping plate 14, especially the welding requirements of some sheet metal weldments 3 with notches;

[0050] The extension portion 2 is provided with a slide groove 21, in which a stopper 24 is slidably installed to abut against the edge of the sheet metal weldment 3, a clamping plate 25 of the workpiece to be welded is arranged on the stopper 24, a welding part 26 is installed on the clamping plate 25 of the workpiece to be welded, the stopper 24 is used to adjust the inclination angle of the workpiece to be welded 4, and the clamping plate 25 of the workpiece to be welded is also provided with welding parts 26 acting on both sides of the clamping plate 25 of the workpiece to be welded, so as to be used for synchronous welding operation on both sides of the clamping plate 25 of the workpiece to be welded.

[0051] In order to realize the function of clamping the sheet metal weldment 3, refer to the attached Figure 5-6As shown, the internal bearing of the clamping groove 13 is connected to the clamping rod 12, the output shaft of the clamping motor 11 is sleeved with a driving helical gear, and the shaft end of the clamping rod 12 is sleeved with a transmission helical gear meshing with the driving helical gear. The clamping motor 11 drives the output shaft driving helical gear to rotate, and then the transmission helical gear meshing with it drives the clamping rod 12 to rotate, and then pushes the clamping plate 14 connected with its external thread to open and close, completing the loading and unloading operation;

[0052] The three groups of clamps 14 move synchronously in the guide groove 13 toward the center of the welding platform 1 to restrict the four sides of the sheet metal weldment 3 to clamp the sheet metal weldment 3. When the sheet metal weldment 3 is a special-shaped part, a single or two clamps 14 cooperate with the abutment 24 to restrict it on the welding platform 1 for welding operations.

[0053] Moreover, in the attached Figure 2 In order to drive the sheet metal weldment 3 to rotate, a steering motor 141 is installed on one side of the clamping plate 14, and the output shaft of the steering motor 141 is fixed to the axle of the steering wheel 142. Under the drive of the steering motor 141, the steering wheel 142 can drive the sheet metal weldment 3 to rotate, and in order to meet the rotation requirements of special-shaped parts, a steering wheel 142 is provided on each group of clamping plates 14.

[0054] It is worth noting that in the attached Figure 2-3 In the embodiment, the first electromagnetic ring 22 is installed at the end of the extension portion 2 located in the slide slot 21, and a pulling rod 23 extending into the slide slot 21 and connected to the end of the stop 24 is arranged inside the first electromagnetic ring 22, and a first return spring 231 is sleeved outside the pulling rod 23, and the first return spring 231 is located in the slide slot 21, and the two ends of the first return spring 231 are respectively in contact with the end of the stop 24 and the inner wall of the slide slot 21. After the sheet metal weldment 3 is assembled through the welding table 1, in order to ensure that the welded part 4 can be tightly connected to the edge of the sheet metal weldment 3, The first electromagnetic ring 22 is energized to generate an electromagnetic force to drive the pulling rod 23 of the magnetic material to pull the stopper 24 away from the sheet metal weldment 3. The first return spring 231 will be compressed during the pulling process. After the weldment 4 is fixed and the tilt angle is adjusted, the first electromagnetic ring 22 is gradually powered off. After the pulling rod 23 loses the electromagnetic force, the end of the stopper 24 will contact the edge of the sheet metal weldment 3 under the release of the first return spring 231. At this time, the edge of the weldment 4 will contact the edge of the sheet metal weldment 3, which is convenient for the welding operation of the weldment 26;

[0055] This design method can ensure that when an irregular shaped sheet metal weldment 3 is welded, the welding part of the workpiece 4 to be welded can be subjected to extrusion force to fit the welding part of the shaped sheet metal weldment 3.

[0056] Further, in order to realize the angle adjustment operation of the above-mentioned workpiece 4 to be welded, refer to the attached Figure 3 As shown, a push-pull groove 241 is provided on the top of the support 24, and the support 24 is located in the push-pull groove 241 and is connected to a push-pull rod 242 with a bearing, and the external thread of the push-pull rod 242 is connected to a slider 243 that slides in the push-pull groove 241, and the rotating shaft of the clamping plate 25 of the workpiece to be welded is connected to the end of the support 24, and the rotating shaft between the slider 243 and the clamping plate 25 of the workpiece to be welded is connected to a diagonal support rod 244, and the push-pull rod 242 is driven by rotating the slider 243 connected to its external thread to slide inside the support 24, and then the clamping plate 25 of the workpiece to be welded connected to the rotating shaft at the end of the support 24 is pushed by the diagonal support rod 244 to achieve angle adjustment, thereby changing the angle adjustment function of the workpiece to be welded 4 fixed by the clamping plate 25 of the workpiece to be welded, and keeping the angle of each welding position of the workpiece to be welded 4 and the sheet metal weldment 3 during welding to be consistent, thereby improving the quality of the finished product.

[0057] After the sheet metal weldment 3 and the weldment 4 are welded, in order to ensure that they can be separated from the interior of the finished product, refer to the attached Figure 4 As shown, a second electromagnetic ring 251 is installed at the end of the welded clamping plate 25, a lifting rod 252 is arranged inside the second electromagnetic ring 251, a first limit block 2521 is arranged at the end of the lifting rod 252, and the lifting rod 252 is located between the second electromagnetic ring 251 and the first limit block 2521 and is sleeved with a second return spring 253 on the outside, an opening and closing plate 254 is arranged at the other end of the lifting rod 252, an opening and closing rod 255 is connected to the internal bearing of the opening and closing plate 254, and an opening and closing seat 256 is connected to the external thread of the opening and closing rod 255, and the lifting rod 252 and The bottom of the opening and closing seat 256 is connected, and the end of the opening and closing plate 254 is installed with a clip 257 arranged parallel to the opening and closing rod 255. The workpiece 4 to be welded is clamped and fixed between the clip 257 and the clamping plate 25 of the workpiece to be welded. After welding is completed, by rotating the opening and closing rod 255, it drives the opening and closing seat 256 with external thread connection to transmit, and adjusts the distance between the clamping plate 25 of the workpiece to be welded and the clip 257. After the disassembly of the workpiece 4 to be welded is completed, the second electromagnetic ring 251 is energized to generate electromagnetic force, which pushes the lifting rod 252 inside it to move upward, and the clip 257 is separated from the workpiece 4 to be welded.

[0058] Among them, a welding window 259 is opened at the bottom of the clamping plate 25 of the workpiece to be welded, and inner rollers 258 are installed on both sides of the welding window 259 of the clamping plate 25 of the workpiece to be welded. The end of the clamping piece 257 is provided with an outer roller 2573, and the clamping piece 257 and the clamping plate 25 of the workpiece to be welded are respectively in contact with the surface of the workpiece to be welded 4 through the outer roller 2573 and the inner roller 258, and the workpiece to be welded 4 is clamped by the inner roller 258 and the outer roller 2573. This enables the workpiece to be welded 4 to be transmitted between the inner roller 258 and the outer roller 2573 when the sheet metal weldment 3 rotates, so as to continue the welding operation.

[0059] For further information, see Attachment Figure 5 As shown, in order to ensure that the welding part of the workpiece 4 to be welded is kept in close contact with the welding part of the sheet metal weldment 3, a pressure block 2572 is provided on the outside of the clip 257, and the pressure block 2572 acts on the top of the workpiece 4 to be welded. A pressure spring 2571 is embedded on one side of the clip 257, and the two ends of the pressure spring 2571 respectively contact the bottom of the opening and closing plate 254 and the top of the pressure block 2572.

[0060] See attached Figure 7 As shown, the welding part 26 includes a connecting seat 261 and a third electromagnetic ring 262. A welding gun 263 is arranged in the third electromagnetic ring 262 and passes through the connecting seat 261. The welding gun 263 is connected to the two sides of the clamping plate 25 of the workpiece to be welded through the connecting seat 261 through a spring shaft. Under the action of the spring shaft, the end of the welding gun 263 can keep in contact with the welding parts on both sides of the workpiece 4 to be welded, and can adjust the length according to the depth of the welding part. The electromagnetic force generated by the third electromagnetic ring 262 pushes the end of the welding gun 263 to sink. After welding is completed, a second limit block 264 is arranged at the end of the welding gun 263. The welding gun 263 is located between the second limit block 264 and the third electromagnetic ring 262, and a third reset spring 265 is sleeved on the outside. Under the action of the third reset spring 265, the welding gun 263 is reset so that it can be smoothly separated from the finished product after welding.

[0061] The present application realizes the clamping of the sheet metal weldment 3 by the clamping motor 11 and the clamping plate 14, and the probe 15 detects the edge of the sheet metal weldment 3 to avoid deformation caused by squeezing of the clamping plate 14, which is particularly suitable for welding sheet metal weldments 3 with notches. It can ensure that when welding irregular shaped sheet metal weldments 3, the welding part of the workpiece 4 to be welded is subjected to the squeezing force and fits with the welding part of the shaped sheet metal weldment 3, so as to meet the welding requirements of the shaped weldment;

[0062] The present application clamps the workpiece 4 to be welded by the inner roller 258 and the outer roller 2573, so that when the sheet metal weldment 3 rotates, the workpiece 4 to be welded can be transmitted between the rollers to continue the welding operation, and through the structural design of the support 24 and the workpiece clamping plate 25, the angle of the workpiece 4 to be welded can be adjusted, the angle of each welding part during the welding process is kept consistent, and the quality of the finished product is improved.

[0063] The design of the welding piece 26 of the present application can keep the end of the welding gun 263 in contact with the welding part of the workpiece 4 to be welded, and can adjust the length according to the depth of the welding part to ensure the welding quality.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sheet metal welding device, characterized in that: It includes a soldering station and an extension part connected to the soldering station; The surface of the welding platform is evenly distributed with clamping grooves, and a clamping motor and a probe are respectively arranged in the middle of the welding platform. The clamping motor drives a clamping plate to slide in the clamping groove. The clamping plate and the probe are respectively used to clamp and position the sheet metal weldment, and a steering wheel for driving the positioned sheet metal weldment to rotate is installed on the clamping plate; The extension portion is provided with a slide groove, a stopper is slidably installed in the slide groove and contacts the edge of the sheet metal weldment, a clamping plate of the weldment to be welded is arranged on the stopper, a welding piece is installed on the clamping plate of the weldment to be welded, the stopper is used to adjust the inclination angle of the weldment to be welded, and welding pieces acting on both sides of the clamping plate of the weldment to be welded are also installed on the clamping plate of the weldment to be welded, so as to be used for synchronous welding operation on both sides of the clamping plate of the weldment to be welded; The inner bearing of the clamping groove is connected with a clamping rod, the output shaft of the clamping motor is sleeved with a driving helical gear, and the shaft end of the clamping rod is sleeved with a transmission helical gear meshing with the driving helical gear; A steering motor is installed on one side of the clamping plate, and the output shaft of the steering motor is fixed to the axle of the steering wheel; The extension portion is located at the end of the slide slot and is provided with a first electromagnetic ring, the interior of the first electromagnetic ring is provided with a pulling rod extending into the slide slot and the end of which is connected to the end of the stop seat; The first return spring is sleeved on the outside of the pulling rod, and the first return spring is located in the slide groove, and the two ends of the first return spring are respectively in contact with the end of the stop seat and the inner wall of the slide groove; A push-pull groove is provided on the top of the stop seat, the stop seat is located in the push-pull groove and the bearing is connected to a push-pull rod, and the external thread of the push-pull rod is connected to a slider that slides in the push-pull groove; The rotating shaft of the clamping plate of the workpiece to be welded is connected to the end of the stop seat, and a diagonal support rod is connected to the rotating shaft between the sliding block and the clamping plate of the workpiece to be welded.

2. The sheet metal welding equipment according to claim 1, characterized in that: A second electromagnetic ring is installed at the end of the clamping plate of the workpiece to be welded, a lifting rod is arranged inside the second electromagnetic ring, a first limiting block is arranged at the end of the lifting rod, and the lifting rod is located between the second electromagnetic ring and the first limiting block and is sleeved with a second return spring on the outside.

3. The sheet metal welding equipment according to claim 2, characterized in that: The other end of the lifting rod is provided with an opening and closing plate, the internal bearing of the opening and closing plate is connected with the opening and closing rod, the external thread of the opening and closing rod is connected with the opening and closing seat, and the lifting rod is connected to the bottom of the opening and closing seat; A clamping piece arranged parallel to the opening and closing rod is installed at the end of the opening and closing plate, and the workpiece to be welded is clamped and fixed between the clamping piece and the clamping plate of the workpiece to be welded.

4. The sheet metal welding equipment according to claim 3, characterized in that: A welding window is provided at the bottom of the clamping plate of the workpiece to be welded, and inner rollers are installed on both sides of the welding window of the clamping plate of the workpiece to be welded. Outer rollers are provided at the ends of the clamping piece, and the clamping piece and the clamping plate of the workpiece to be welded respectively contact the surface of the workpiece to be welded through the outer rollers and the inner rollers.

5. The sheet metal welding equipment according to claim 4, characterized in that: A pressure block is sleeved on the outside of the clamp, and the pressure block acts on the top of the workpiece to be welded. A pressure spring is embedded on one side of the clamp, and the two ends of the pressure spring respectively contact the bottom of the opening and closing plate and the top of the pressure block.

6. The sheet metal welding equipment according to claim 1, characterized in that: The welding piece includes a connecting seat and a third electromagnetic ring, wherein a welding gun penetrating the connecting seat is arranged in the third electromagnetic ring, and the welding gun is connected to both sides of the clamping plate of the welded piece through the connecting seat through a spring shaft; A second limit block is arranged at the end of the welding gun, and the welding gun is located between the second limit block and the third electromagnetic ring, and a third return spring is sleeved on the outside of the welding gun.

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