Metal plate welding equipment

Abstract

The metal plate welding equipment relates to the technical field of laser welding and comprises a supporting table, a top plate is fixedly mounted at the top of the supporting table, a first electric push rod is fixedly mounted on the outer wall of the supporting table, a sliding groove is formed in the top of the supporting table, and a push plate is slidably mounted on the inner wall of the sliding groove; a motor is fixedly installed on the side, close to the first electric push rod, of the push plate, a plate is placed on the top of the supporting table, a second electric push rod is fixedly installed on the top of the top plate, the output end of the second electric push rod slidably penetrates through the top plate, and a sliding rod is slidably installed on the inner wall of the second electric push rod. A laser welding head is installed on the inner wall of the sliding rod in a sliding mode, a fixing device is further arranged on the top of the supporting table, welding deviation caused by plate sliding is avoided, it is guaranteed that the position of a welding seam is accurate, meanwhile, the problems of insufficient welding, welding skips or uneven welding seams caused by plate moving are solved, and the welding strength and the sealing performance are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and specifically relates to a metal sheet welding device. Background Art

[0002] Laser welding is a process in which the surface of a workpiece is heated by a laser beam, and the surface heat diffuses inward through heat conduction, melting the workpiece to form a specific molten pool for welding. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.

[0003] The patent with the patent announcement number CN221313042U relates to the technical field of welding equipment, including the main body of a metal sheet welding device. The main body of the metal sheet welding device includes a telescopic rod. First, two metal sheets are adjusted and lapped together, and the telescopic rod is used to adjust metal sheets of different lengths. A sliding welding mechanism is movably sleeved on the outer surface of the top of the telescopic rod. This patent first adjusts and laps two metal sheets together, uses the telescopic rod to adjust metal sheets of different lengths, squeezes and laps the surface of the L-shaped clamping and limiting block on both side edges of the metal sheet, and after fixing it, rotates the threaded rod on the inner surface of the threaded slider to continuously push the L-shaped clamping and limiting block, and uses the hollow elastic soft strip on the inner surface of the L-shaped clamping and limiting block to increase the tight extrusion force with the surface of the sheet.

[0004] The above patent uses the hollow elastic soft strip on the inner surface of the L-shaped clamping and limiting block to increase the tight extrusion force with the surface of the sheet. However, during the welding process, the sheet is not completely fixed, so the sheet will expand due to heating and contract due to cooling after welding. This expansion and contraction may cause the sheet to deform or warp, resulting in difficult assembly or failure to meet the design requirements. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a metal sheet welding device, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A metal sheet welding device includes a support table. A top plate is fixedly installed on the top of the support table. A first electric push rod is fixedly installed on the outer wall of the support table. A sliding groove is opened on the top of the support table. A push plate is slidably installed on the inner wall of the sliding groove. A motor is fixedly installed on the side of the push plate close to the first electric push rod. A sheet is placed on the top of the support table. A second electric push rod is fixedly installed on the top of the top plate. The output end of the second electric push rod slidably penetrates the top plate. A sliding rod is slidably installed in the inner wall of the second electric push rod. A laser welding head is slidably installed in the inner wall of the sliding rod. A fixing device is also provided on the top of the support table; The fixing device includes a rotating shaft, a round rod, a collar and a fixing rod. The rotating shaft is rotatably installed at the output end of the motor. The round rod is slidably installed inside the inner wall of the rotating shaft. The collar is slidably installed on the outer wall of the rotating shaft. The collar is fixedly installed on the outer wall of the round rod. The collar is fixedly connected to the outer wall of the round rod. The fixing rod is fixedly installed on the circumferential surface of the rotating shaft.

[0007] According to the above technical solution, the fixing device further includes a connecting rod, a fixing plate, a fixing key, a fixing block and an elastic telescopic rod. The fixing plate is slidably installed on the outer wall of the fixing rod. One end of the connecting rod is rotatably installed on the side of the fixing plate close to the collar. The other end of the connecting rod is rotatably installed on the side of the collar close to the fixing plate. The elastic telescopic rod is slidably installed on the side of the push plate away from the motor. The fixing block is fixedly installed at the movable end of the elastic telescopic rod. The fixing key is slidably installed on the side of the fixing rod close to the fixing block. Fixing the plate can ensure that the plate does not displace during the welding process, avoid welding deviation caused by the sliding of the plate, ensure the accurate position of the weld, and at the same time prevent problems such as false welding, missed welding or uneven welds caused by the movement of the plate, and improve the welding strength and tightness.

[0008] According to the above technical solution, the side of the elastic telescopic rod close to the plate is provided with an inclined surface. The elastic telescopic plate is provided with an inclined surface to facilitate pushing the plate to move onto the surface of the elastic telescopic rod. The fixing key slidably penetrates the fixing block. A first spring is provided between the fixing plate and the fixing rod. The first spring is provided to drive the fixing plate back to its original position. A second spring is provided between the round rod and the rotating shaft. The second spring is provided to drive the round rod back to its original position.

[0009] According to the above technical solution, on the top of the support table, there is further a lifting device for lifting the plate and a protection device for protecting the laser welding head from damage. The lifting device includes a telescopic rod, a sliding rod, an insertion key, a lifting plate and a fixing sleeve. The telescopic rod slidably penetrates the top of the support table. The sliding rod is slidably installed at the bottom of the support table. The insertion key is fixedly installed on the side of the sliding rod close to the push plate. The lifting plate slidably penetrates the bottom of the support table. The fixing sleeve is slidably installed on the outer wall of the push plate. When the elastic telescopic rod moves, the plate will be lifted, ensuring that the edge of the plate does not scratch the tabletop when the motor drives the plate to rotate, effectively preventing mechanical interference between the plate and the workbench surface during the rotation process, and providing sufficient movement space for the rotating mechanism.

[0010] According to the above technical solution, the lifting device further includes a sliding block, a telescopic key, and a pushing block. The sliding block is slidably installed on the side of the push plate away from the motor. The telescopic key is slidably installed inside the sliding block. The pushing block is fixedly installed on the side of the push plate close to the sliding block. The telescopic key slidably penetrates the rotating shaft. Then, when the plate member is lifted, the rotating shaft can drive the plate member to turn over. This design eliminates the risk of the plate member colliding with the workbench surface, avoids scratching and damaging the surface of the workbench at the edge of the plate member during rotation, and increases the service life of the equipment.

[0011] According to the above technical solution, the sides of the telescopic key and the pushing block close to each other are provided with inclined surfaces. The inclined surfaces of the telescopic key and the pushing block are provided to facilitate the pushing block to push the telescopic key to move. A third spring is provided between the telescopic key and the sliding block to drive the telescopic key back to its original position. A fourth spring is provided between the sliding block and the push plate to drive the sliding block back to its original position. A fifth spring is provided between the telescopic rod and the support platform to drive the telescopic rod to slide upward. A sixth spring is provided between the lifting plate and the support platform to drive the lifting plate to slide upward. A seventh spring is provided between the sliding rod and the support platform to drive the sliding rod to move. The fixed sleeve is fixedly connected to the outer wall of the motor, and the fixed sleeve is fixedly connected to the outer wall of the elastic telescopic rod.

[0012] According to the above technical solution, the protection device includes a pushing rod, a sliding plate, a first hydraulic device, a second hydraulic device, a circular ring, a rotating rod, a push rod, a fixed frame, and a sliding key. The pushing rod is fixedly installed on the circumferential surface of the rotating shaft. The first hydraulic device is fixedly installed on the side of the push plate away from the motor. The sliding plate is fixedly installed at the movable end of the first hydraulic device. The second hydraulic device is fixedly installed at the bottom of the top plate. The circular ring is fixedly installed on the outer wall of the sliding rod, and the circular ring is fixedly installed at the movable end of the second hydraulic device. The rotating rod is rotatably installed at the bottom of the circular ring. The push rod slidably penetrates the bottom of the circular ring. The fixed frame is fixedly installed on the outer wall of the sliding rod. The sliding key is slidably installed inside the fixed frame, and the sliding key slidably penetrates the outer wall of the sliding rod. The laser welding head is a key component for welding. If the plate member contacts the rotating rod during the flipping process, the laser welding head may be mechanically impacted or pressed, resulting in damage or a decrease in accuracy. By retracting the laser welding head in a direction away from the plate member, this kind of damage can be avoided, thereby extending the service life of the laser welding head.

[0013] According to the above technical solution, the first hydraulic device and the second hydraulic device are connected through a hose. An eighth spring is provided between the sliding plate and the pushing plate. The purpose of providing the eighth spring is to drive the sliding plate to push back to its original position. A torsion spring is provided between the rotating rod and the ring. The purpose of providing the torsion spring is to drive the rotating rod back to its original position. A ninth spring is provided between the sliding rod and the laser welding head. The purpose of providing the ninth spring is to drive the laser welding head to slide inside the sliding rod. A convex block is fixedly installed on one side of the rotating rod close to the push rod, and one side of the push rod close to the fixed frame is set as an inclined surface.

[0014] The present invention provides a metal sheet welding device, which has the following beneficial effects: In this invention, when the collar moves, it will pull the connecting rod to move. When the connecting rod moves, it will pull the fixing plate to move. When the fixing plate moves, it will fix the plate member. Fixing the plate member can ensure that the plate member does not displace during the welding process, avoid welding deviation caused by the sliding of the sheet material, ensure the accurate position of the weld seam, and at the same time prevent problems such as false welding, missed welding or uneven weld seams caused by the movement of the sheet material, and improve the welding strength and tightness.

[0015] In this invention, when the sliding sleeve moves, it will drive the motor to move. When the sliding sleeve moves, it will drive the elastic telescopic rod to move. When the elastic telescopic rod moves, the plate member will be lifted, ensuring that the edge of the plate member will not scratch the tabletop when the motor drives the plate member to rotate, effectively preventing mechanical interference between the plate member and the workbench surface during the rotation process, and providing sufficient movement space for the rotating mechanism.

[0016] In this invention, when the sliding key moves and contacts the inclined surface of the push block, the sliding key will be pushed by the push block to slide away from the rotating shaft, then the limit of the rotating shaft will be released, and the rotating shaft can drive the plate member to turn over when the plate member is lifted. This design eliminates the risk of collision between the plate member and the workbench surface, avoids scratching and damaging the surface of the workbench by the edge of the plate member during rotation, and increases the service life of the equipment.

[0017] In this invention, when the ring moves, it will pull the sliding rod to slide inside the second electric push rod. When the sliding rod slides, it will drive the laser welding head to move. Then when the plate member rotates, the laser welding head will move away from the plate member. By moving the laser welding head to a position away from the plate member, this kind of collision risk is reduced, the integrity of the laser welding head is protected, the operation risk can be reduced, and the safety of the working environment can be improved.

[0018] In this invention, the push rod will push the sliding key to slide away from the sliding rod. Then, the sliding key will release the limit on the laser welding head, and the laser welding head will be pulled by the No. 9 spring to retract into the sliding rod. The laser welding head is a key component for welding. If the plate contacts the rotating rod during the flipping process, the laser welding head may be mechanically impacted or pressed, resulting in damage or a decrease in precision. By retracting the laser welding head away from the plate, such damage can be avoided, thereby extending the service life of the laser welding head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the positional structure of the sliding rod and the laser welding head of the present invention; Figure 3 is a schematic diagram of the positional structure of the round rod and the collar of the present invention; Figure 4 is a schematic diagram of the positional structure of the fixed plate and the connecting rod of the present invention; Figure 5 is a schematic diagram of the positional structure of the sliding block and the fixed key of the present invention; Figure 6 is a schematic diagram of the positional structure of the push rod and the sliding plate of the present invention; Figure 7 is a schematic diagram of the positional structure of the push rod and the fixed bracket of the present invention.

[0020] In the figure: 1, support table; 2, top plate; 3, first electric push rod; 4, motor; 5, push plate; 6, second electric push rod; 7, sliding rod; 8, laser welding head; 9, plate; 10, rotating shaft; 11, round rod; 12, collar; 13, connecting rod; 14, fixed rod; 15, fixed plate; 16, fixed key; 17, fixed block; 18, elastic telescopic rod; 21, telescopic rod; 22, sliding rod; 23, insertion key; 24, lifting plate; 25, fixed sleeve; 26, sliding block; 27, telescopic key; 28, push block; 31, push rod; 32, sliding plate; 33, first hydraulic device; 34, second hydraulic device; 35, ring; 36, rotating rod; 37, push rod; 38, fixed bracket; 39, sliding key. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 7, an embodiment of the present invention is: a metal sheet welding device, including a support table 1, a top plate 2 is fixedly installed on the top of the support table 1, a first electric push rod 3 is fixedly installed on the outer wall of the support table 1, a sliding groove is opened on the top of the support table 1, a push plate 5 is slidably installed on the inner wall of the sliding groove, a motor 4 is fixedly installed on the side of the push plate 5 close to the first electric push rod 3, a plate member 9 is placed on the top of the support table 1, a second electric push rod 6 is fixedly installed on the top of the top plate 2, the output end of the second electric push rod 6 slidably penetrates the top plate 2, a sliding rod 7 is slidably installed in the inner wall of the second electric push rod 6, a laser welding head 8 is slidably installed in the inner wall of the sliding rod 7, and a fixing device is further provided on the top of the support table 1; The fixing device includes a rotating shaft 10, a round rod 11, a collar 12 and a fixing rod 14. The rotating shaft 10 is rotatably installed at the output end of the motor 4. The round rod 11 is slidably installed in the inner wall of the rotating shaft 10. The collar 12 is slidably installed on the outer wall of the rotating shaft 10. The collar 12 is fixedly connected to the outer wall of the round rod 11. The fixing rod 14 is fixedly installed on the circumferential surface of the rotating shaft 10.

[0023] The fixing device further includes a connecting rod 13, a fixing plate 15, a fixing key 16, a fixing block 17 and an elastic telescopic rod 18. The fixing plate 15 is slidably installed on the outer wall of the fixing rod 14. One end of the connecting rod 13 is rotatably installed on the side of the fixing plate 15 close to the collar 12. The other end of the connecting rod 13 is rotatably installed on the side of the collar 12 close to the fixing plate 15. The elastic telescopic rod 18 is slidably installed on the side of the push plate 5 away from the motor 4. The fixing block 17 is fixedly installed at the movable end of the elastic telescopic rod 18. The fixing key 16 is slidably installed on the side of the fixing rod 14 close to the fixing block 17. Fixing the plate member 9 can ensure that the plate member does not displace during the laser welding process, avoid welding deviation caused by the sliding of the sheet material, ensure the accurate position of the weld, and at the same time prevent problems such as virtual welding, missed welding or uneven welds caused by the movement of the sheet material, and improve the laser welding strength and sealing performance.

[0024] The side of the elastic telescopic rod 18 close to the plate member 9 is provided with an inclined surface. The elastic telescopic plate 18 is provided with an inclined surface to facilitate pushing the plate member 9 to move onto the surface of the elastic telescopic rod 18. The fixing key 16 slidably penetrates the fixing block 17. A first spring is provided between the fixing plate 15 and the fixing rod 14. The first spring is provided to drive the fixing plate 15 back to its original position. A second spring is provided between the round rod 11 and the rotating shaft 10. The second spring is provided to drive the round rod 11 back to its original position.

[0025] During the operation of this embodiment: When laser welding of the plate 9 is required, the plate 9 needs to be fixed. After the plate 9 is fixed, the laser welding head 8 will perform laser welding on the plate 9. When one side of the plate 9 is welded, the plate 9 needs to be turned over to weld the other side. When the plate 9 is fixed, the first electric push rod 3 will push the push plate 5 to move. The movement of the push plate 5 will push the rotating shaft 10 to move. The movement of the rotating shaft 10 will push the round rod 11 to move. The movement of the round rod 11 will contact the plate 9, then the round rod 11 will slide into the rotating shaft 10. The sliding of the round rod 11 will drive the collar 12 to move. The movement of the collar 12 will pull the connecting rod 13 to move. The movement of the connecting rod 13 will pull the fixing plate 15 to move. The movement of the fixing plate 15 will fix the plate 9. Fixing the plate 9 can ensure that the plate does not displace during laser welding, avoid laser welding deviation caused by the sliding of the plate, ensure the accurate position of the weld, and at the same time prevent problems such as virtual welding, missed welding or uneven welds caused by the movement of the plate, improve the welding strength and sealing performance. The movement of the fixing plate 15 will push the fixing key 16 to move. The movement of the fixing key 16 will lose contact with the fixing block 17, then the limit of the fixing block 17 will be released, then the limit of the movable end of the elastic telescopic rod 18 will be released, then the elastic telescopic rod 18 will extend towards the plate 9, and the plate 9 will be lifted by the elastic telescopic rod 18. The high temperature during welding will cause the plate 9 to expand and contract thermally. Fixing only the two sides may not be sufficient to prevent warping. After being pushed by the elastic telescopic rod 18, the top and bottom are also fixed, which can effectively inhibit the deformation of the plate during laser welding.

[0026] Please refer to Figures 1 - 7 , on the basis of the above embodiment, in another embodiment of the present invention, a lifting device for lifting the plate 9 and a protection device for protecting the laser welding head 8 from damage are further provided on the top of the support table 1. The lifting device includes a telescopic rod 21, a sliding rod 22, an insertion key 23, a lifting plate 24 and a fixing sleeve 25. The telescopic rod 21 slides through the top of the support table 1. The sliding rod 7 is slidably installed at the bottom of the support table 1. The insertion key 23 is fixedly installed on the side of the sliding rod 22 close to the push plate 5. The lifting plate 24 slides through the bottom of the support table 1. The fixing sleeve 25 is slidably installed on the outer wall of the push plate 5. When the elastic telescopic rod 18 moves, the plate 9 will be lifted, ensuring that the edge of the plate 9 will not scratch the table surface when the motor 4 drives the plate 9 to rotate, effectively preventing mechanical interference between the plate and the workbench surface during rotation, and providing sufficient movement space for the rotating mechanism.

[0027] The lifting device further includes a sliding block 26, a telescopic key 27, and a pushing block 28. The sliding block 26 is slidably installed on the side of the pushing plate 5 away from the motor 4. The telescopic key 27 is slidably installed on the inner wall of the sliding block 26. The pushing block 28 is fixedly installed on the side of the pushing plate 5 close to the sliding block 26. The telescopic key 27 slidably penetrates the rotating shaft 10. Then, when the plate member 9 is lifted, the rotating shaft 10 can drive the plate member 9 to turn over. This design eliminates the risk of the plate member colliding with the workbench surface, avoids scratching and damaging the workbench surface at the edge of the plate member during rotation, and increases the service life of the equipment.

[0028] The sides of the telescopic key 27 and the pushing block 28 close to each other are provided with inclined surfaces. The inclined surfaces of the telescopic key 27 and the pushing block 28 are for facilitating the pushing block 28 to push the telescopic key 27 to move. A third spring is provided between the telescopic key 27 and the sliding block 26. The third spring is for driving the telescopic key 27 to return to its original position. A fourth spring is provided between the sliding block 26 and the pushing plate 5. The fourth spring is for driving the sliding block 26 to return to its original position. A fifth spring is provided between the telescopic rod 21 and the support platform 1. The fifth spring is for driving the telescopic rod 21 to slide upward. A sixth spring is provided between the lifting plate 24 and the support platform 1. The sixth spring is for driving the lifting plate 24 to slide upward. A seventh spring is provided between the sliding rod 22 and the support platform 1. The seventh spring is for driving the sliding rod 22 to move. The fixed sleeve 25 is fixedly connected to the outer wall of the motor 4, and the fixed sleeve 25 is fixedly connected to the outer wall of the elastic telescopic rod 18.

[0029] The protection device includes a pushing rod 31, a sliding plate 32, a first hydraulic device 33, a second hydraulic device 34, a circular ring 35, a rotating rod 36, a push rod 37, a fixed frame 38, and a sliding key 39. The pushing rod 31 is fixedly installed on the circumferential surface of the rotating shaft 10. The first hydraulic device 33 is fixedly installed on the side of the pushing plate 5 away from the motor 4. The sliding plate 32 is fixedly installed on the movable end of the first hydraulic device 33. The second hydraulic device 34 is fixedly installed at the bottom of the top plate 2. The circular ring 35 is fixedly installed on the outer wall of the sliding rod 7, and the circular ring 35 is fixedly installed on the movable end of the second hydraulic device 34. The rotating rod 36 is rotatably installed at the bottom of the circular ring 35. The push rod 37 slidably penetrates the bottom of the circular ring 35. The fixed frame 38 is fixedly installed on the outer wall of the sliding rod 7. The sliding key 39 is slidably installed on the inner wall of the fixed frame 38, and the sliding key 39 slidably penetrates the outer wall of the sliding rod 7. The laser welding head 8 is a key component for laser welding. If the plate member 9 contacts the rotating rod 36 during the flipping process, the laser welding head 8 may be mechanically impacted or pressed, resulting in damage or a decrease in accuracy. By retracting the laser welding head 8 in a direction away from the plate member 9, this kind of damage can be avoided, thereby extending the service life of the laser welding head 8.

[0030] The first hydraulic device 33 and the second hydraulic device 34 are connected through a hose. An eighth spring is provided between the slide plate 32 and the push plate 5. The purpose of providing the eighth spring is to drive the slide plate 32 to push back to its original position. A torsion spring is provided between the rotating rod 36 and the ring 35. The purpose of providing the torsion spring is to drive the rotating rod 36 to return to its original position. A ninth spring is provided between the sliding rod 7 and the laser welding head 8. The purpose of providing the ninth spring is to drive the laser welding head 8 to slide inside the sliding rod 7. A convex block is fixedly installed on one side of the rotating rod 36 close to the push rod 37, and one side of the push rod 37 close to the fixed frame 38 is provided as an inclined surface.

[0031] When this embodiment works: After the plate member 9 is lifted by the elastic telescopic plate 18, the pressing on the telescopic rod 21 is lost, then the telescopic rod 21 will be pushed by the fifth spring and slide in a direction away from the support table 1. The movement of the telescopic rod 21 will release the limit on the sliding rod 22, then the sliding rod 22 will be pulled by the seventh spring. The movement of the sliding rod 22 will pull the key 23 to move. The movement of the key 23 will release the limit on the lifting plate 24, then the lifting plate 24 will be driven by the sixth spring and move in the direction of the sliding sleeve 25, then the sliding sleeve 25 will be pushed by the lifting plate 24 and slide in a direction away from the support table 1. The movement of the sliding sleeve 25 will drive the motor 4 to move. The movement of the sliding sleeve 25 will drive the elastic telescopic rod 18 to move. When the elastic telescopic rod 18 moves, the plate member 9 will be lifted, ensuring that the edge of the plate member 9 will not scratch the table surface when the motor 4 drives the plate member 9 to rotate, effectively preventing mechanical interference between the plate member and the workbench surface during the rotation process, providing sufficient movement space for the rotating mechanism. The movement of the motor 4 will drive the rotating shaft 10 to move. The movement of the rotating shaft 10 will drive the telescopic key 27 to move. The movement of the telescopic key 27 will drive the sliding block 26 to move. When the sliding key 27 moves and contacts the inclined surface of the push block 28, the sliding key 27 will be pushed by the push block 28 and slide in a direction away from the rotating shaft 10, then the limit on the rotating shaft 10 will be released, and the rotating shaft 10 can drive the plate member 9 to turn over when the plate member 9 is lifted. This design eliminates the risk of collision between the plate member and the workbench surface, avoids scratching and damaging the workbench surface by the edge of the plate member during rotation, and increases the service life of the equipment.

[0032] When the rotating shaft 10 rotates, it will drive the push rod 31 to rotate. The movement of the push rod 31 will push the slide plate 32 to move. The movement of the slide plate 32 will pull the movable end of the first hydraulic device 33 to move. The movement of the movable end of the first hydraulic device 33 will pump the liquid inside the second hydraulic device 34 into the first hydraulic device 33. Then the liquid inside the second hydraulic device 34 will decrease. The decrease of the liquid inside the second hydraulic device 34 will cause the movable end of the second hydraulic device 34 to slide towards the inside of the second hydraulic device 34. Then the ring 35 will be pulled by the movable end of the second hydraulic device 34. The movement of the ring 35 will pull the sliding rod 7 to slide towards the inside of the second electric push rod 6. The sliding of the sliding rod 7 will drive the laser welding head 8 to move. Then when the plate 9 rotates, the laser welding head 8 will move away from the plate 9. By moving the laser welding head 8 to a position away from the plate 9, the risk of such collision is reduced, the integrity of the laser welding head 8 is protected, the operation risk can be reduced, and the safety of the working environment can be improved. When the width of the plate 9 is too long, it will hit the rotating rod 36 during the rotation process. The rotating rod 36 will rotate towards the push rod 37 when it is hit. Then the rotating rod 36 will push the convex block to move. The movement of the convex block will push the push rod 37 to slide towards the sliding key 39. Then the push rod 37 will push the sliding key 39 to slide away from the sliding rod 7. Then the sliding key 39 will release the limit on the laser welding head 8. Then the laser welding head 8 will be pulled by the ninth spring to retract towards the inside of the sliding rod 7. The laser welding head 8 is a key component for welding. If the plate 9 contacts the rotating rod 36 during the flipping process, the laser welding head 8 may be mechanically impacted or compressed, resulting in damage or a decrease in accuracy. By retracting the laser welding head 8 away from the plate 9, such damage can be avoided, thereby extending the service life of the laser welding head 8.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal sheet welding device, comprising a support table, characterized in that: A top plate is fixedly installed on the top of the support platform. A first electric push rod is fixedly installed on the outer wall of the support platform. A sliding groove is formed on the top of the support platform. A push plate is slidably installed on the inner wall of the sliding groove. A motor is fixedly installed on one side of the push plate close to the first electric push rod. A plate member is placed on the top of the support platform. A second electric push rod is fixedly installed on the top of the top plate. The output end of the second electric push rod slidably penetrates the top plate. A sliding rod is slidably installed in the inner wall of the second electric push rod. A laser welding head is slidably installed in the inner wall of the sliding rod. A fixing device is further provided on the top of the support platform; The fixing device includes a rotating shaft, a round rod, a sleeve ring and a fixing rod. The rotating shaft is rotatably installed at the output end of the motor. The round rod is slidably installed in the inner wall of the rotating shaft. The sleeve ring is slidably installed on the outer wall of the rotating shaft. The sleeve ring is fixedly connected to the outer wall of the round rod. The fixing rod is fixedly installed on the circumferential surface of the rotating shaft.

2. A metal sheet welding device according to claim 1, characterized in that: The fixing device further includes a connecting rod, a fixing plate, a fixing key, a fixing block and an elastic telescopic rod. The fixing plate is slidably installed on the outer wall of the fixing rod. One end of the connecting rod is rotatably installed on one side of the fixing plate close to the sleeve ring. The other end of the connecting rod is rotatably installed on one side of the sleeve ring close to the fixing plate. The elastic telescopic rod is slidably installed on one side of the push plate away from the motor. The fixing block is fixedly installed at the movable end of the elastic telescopic rod. The fixing key is slidably installed on one side of the fixing rod close to the fixing block; Wherein, a lifting device for lifting the plate member and a protection device for protecting the laser welding head from damage are further provided on the top of the support platform.

3. The metal sheet welding device according to claim 2, characterized in that: One side of the elastic telescopic rod close to the plate member is provided with an inclined surface. The fixing key slidably penetrates the fixing block. A first spring is provided between the fixing plate and the fixing rod. A second spring is provided between the round rod and the rotating shaft.

4. A metal sheet welding device according to claim 3, characterized in that: The lifting device includes a telescopic rod, a sliding rod, an inserting key, a lifting plate and a fixing sleeve. The telescopic rod slidably penetrates the top of the support platform. The sliding rod is slidably installed at the bottom of the support platform. The inserting key is fixedly installed on one side of the sliding rod close to the push plate. The lifting plate slidably penetrates the bottom of the support platform. The fixing sleeve is slidably installed on the outer wall of the push plate.

5. A metal sheet welding device according to claim 4, characterized in that: The lifting device further includes a sliding block, a telescopic key and a pushing block. The sliding block is slidably installed on one side of the push plate away from the motor. The telescopic key is slidably installed in the inner wall of the sliding block. The pushing block is fixedly installed on one side of the push plate close to the sliding block. The telescopic key slidably penetrates the rotating shaft.

6. The metal sheet welding device according to claim 5, characterized in that: One side of the telescopic key and the pushing block close to each other is provided with an inclined surface. A third spring is provided between the telescopic key and the sliding block. A fourth spring is provided between the sliding block and the push plate. A fifth spring is provided between the telescopic rod and the support platform. A sixth spring is provided between the lifting plate and the support platform. A seventh spring is provided between the sliding rod and the support platform. The fixing sleeve is fixedly connected to the outer wall of the motor. The fixing sleeve is fixedly connected to the outer wall of the elastic telescopic rod.

7. A metal sheet welding device according to claim 6, characterized in that: The protection device includes a push rod, a sliding plate, a first hydraulic device, a second hydraulic device, a circular ring, a rotating rod, a push rod, a fixing frame and a sliding key. The push rod is fixedly installed on the circumferential surface of the rotating shaft. The first hydraulic device is fixedly installed on the side of the push plate away from the motor. The sliding plate is fixedly installed at the movable end of the first hydraulic device. The second hydraulic device is fixedly installed at the bottom of the top plate. The circular ring is fixedly installed on the outer wall of the sliding rod. The circular ring is fixedly installed at the movable end of the second hydraulic device. The rotating rod is rotatably installed at the bottom of the circular ring. The push rod slidably penetrates through the bottom of the circular ring. The fixing frame is fixedly installed on the outer wall of the sliding rod. The sliding key is slidably installed on the inner wall of the fixing frame. The sliding key slidably penetrates through the outer wall of the sliding rod.

8. A metal sheet welding device according to claim 7, characterized in that: The first hydraulic device and the second hydraulic device are communicated through a hose. An eighth spring is provided between the sliding plate and the push plate. A torsion spring is provided between the rotating rod and the circular ring. A ninth spring is provided between the sliding rod and the laser welding head. A convex block is fixedly installed on the side of the rotating rod close to the push rod. The side of the push rod close to the fixing frame is set as an inclined plane.

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