An automatic welding device

Abstract

An automatic welding device, comprising a base plate, one side of the base plate is provided with a welding mechanism, the base plate is fixedly provided with a support frame, the top of the support frame is provided with a placing plate, the placing plate is provided with an alignment assembly for aligning two metal plates, the alignment assembly comprises two sliders and two groups of positioning rods, the placing plate is symmetrically provided with a sliding groove, the two sliders are respectively and slidably arranged in the corresponding sliding grooves, the bottom of each slider is fixedly provided with an inclined block, a moving plate is slidably arranged between the two inclined blocks, the support frame is provided with a driving assembly for driving the moving plate to vertically move, the placing plate is symmetrically provided with two groups of positioning grooves, the positioning rods are slidably arranged in the corresponding positioning grooves, the moving plate is provided with a transmission assembly for driving the two groups of positioning rods to move towards or away from each other, the two groups of positioning rods and the two sliders respectively move towards each other, the edges of the two metal plates are aligned and centered, and a weld is formed, so that the weld is located at a predetermined welding position, and the welding quality is improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically to an automatic welding device. Background Technology

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature, or high pressure. However, in the production of electrical cabinets, it is necessary to weld two metal sheets into one sheet.

[0003] For example, patent document CN111390460B, entitled "An Automatic Welding Device," includes: a base; a central shaft vertically mounted on the base; a first drive mechanism for driving the central shaft to rotate; a support frame vertically mounted on the central shaft; a welding torch hinged to the support frame and rotating under the drive of the second drive mechanism; a robotic arm hinged to the central shaft; a robotic hand mounted on the robotic arm for gripping the workpiece to be welded; a first slide rail and a second slide rail, both fixedly mounted on the central shaft; the support frame slidably connected to the central shaft via the first slide rail; and the robotic arm slidably connected to the central shaft via the second slide rail; and two worktables mounted on the base for placing the workpieces. By rotating the central shaft, the welding torch and the robotic arm can interchange positions. While the welding torch is welding, the robotic arm and robotic hand are loading and unloading workpieces on the other worktable.

[0004] However, the processing procedure mentioned in the above literature has certain defects. When welding two metal plates, it is difficult to position and align the edges of the two metal plates, causing the weld formed by the edges of the two metal plates to deviate from the predetermined welding position. As a result, welding deviation is very likely to occur during the welding process, which will not only lead to a decrease in welding quality, but may even cause the workpiece to be scrapped. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic welding device to solve the technical problem mentioned in the background art, which is that it is difficult to position and align the edges of two metal plates, resulting in the weld seam formed at the edges of the two metal plates deviating from the predetermined welding position.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic welding device includes a base plate, a welding mechanism for welding metal sheets is provided on one side of the base plate, a support frame is fixedly provided on the base plate, a placement plate is provided on the top of the support frame, and an alignment component for aligning two metal sheets is provided on the placement plate. The alignment component includes two sliders and two sets of positioning rods. The placement plate has symmetrically opened grooves, and the two sliders are slidably disposed in the corresponding grooves. An inclined block is fixedly provided at the bottom of each of the two sliders, and a moving plate is slidably disposed between the two inclined blocks. The support frame is provided with a drive component for driving the moving plate to move vertically. The placement plate has two sets of positioning grooves symmetrically opened, and the positioning rods are slidably disposed in the corresponding positioning grooves. The moving plate is provided with a transmission component for driving the two sets of positioning rods to move towards or away from each other. When the drive component drives the moving plate to move vertically, the moving plate drives the two sliders to move towards each other through the two inclined blocks. At the same time, the moving plate drives the two sets of positioning rods to move towards each other through the transmission component. Thus, the two sets of positioning rods and the two sliders move towards each other, aligning the edges of the two metal sheets in the center and forming a weld.

[0008] Working principle: During use, two metal plates to be welded are placed in the placement area consisting of two sets of positioning rods and two clamping plates. When the drive component moves the moving plate vertically, the moving plate drives two sliders to move towards each other through two inclined plates. At the same time, the moving plate drives the two sets of positioning rods to move towards each other through the transmission component. Thus, under the combined action of the two sets of positioning rods and the two clamping plates moving towards each other, the edges of the two metal plates are aligned from different directions. After the edges of the two metal plates are aligned, the weld seam formed between the two metal plates is exactly below the welding torch.

[0009] The beneficial effects of this invention are as follows: The alignment assembly includes two sliders and two sets of positioning rods. An inclined block is fixedly installed at the bottom of each slider, and a moving plate slides between the two inclined blocks. The support frame is equipped with a driving component for vertically moving the moving plate. The placement plate has two symmetrically opened positioning slots, and the positioning rods are slidably installed in the corresponding positioning slots. The moving plate is equipped with a transmission component for moving the two sets of positioning rods towards or away from each other. Therefore, in use, when two metal plates to be welded are placed in the placement area formed by the corresponding two sets of positioning rods and two clamping plates, the driving component drives the moving plate to move vertically. The moving plate, through the two inclined plates, drives the two sliders to move towards each other. Simultaneously, the moving plate, through the transmission component, drives the two sets of positioning rods to move towards each other. Thus, under the combined action of the two sets of positioning rods and the two clamping plates moving towards each other, the edges of the two metal plates are aligned from different directions. After the edges of the two metal plates are aligned, the weld seam formed between the two metal plates is exactly below the welding torch. This ensures the weld seam is located in the predetermined welding position, avoiding deviations during welding and improving welding quality.

[0010] Furthermore, the driving assembly includes a driving rod and a rotating component for driving the placement plate to rotate. An annular guide rail is fixedly installed on the top of the support frame. One end of the driving rod is fixedly installed on the bottom of the moving plate, and the other end of the driving rod is slidably engaged with the annular guide rail. A first ramp and a second ramp are fixedly installed along the circumference of the annular guide rail, and the two ramps are in an inverted V-shape. A first spring is fixedly installed between the moving plate and the placement plate. When the placement plate rotates, it drives the driving rod to slide along the annular guide rail. When the driving rod is slidably engaged with the first ramp, it drives the moving plate to move upward. When the driving rod is slidably engaged with the second ramp, it drives the driving rod to move downward under the restoring force of the first spring.

[0011] Furthermore, the rotating component includes a third motor and a gear ring. The third motor is fixedly mounted on the support frame, and a second gear is fixedly mounted on the output end of the third motor. A rotating shaft is rotatably mounted on the top of the support frame, and the top of the rotating shaft is fixedly connected to the placement plate. The gear ring is fixedly sleeved on the outer circumference of the rotating shaft, and the gear ring meshes with the second gear.

[0012] Furthermore, four alignment components are provided, and the four alignment components are arranged in a circumferential array along the top of the placement plate.

[0013] Furthermore, the transmission assembly includes two elastic telescopic rods and two inclined plates. The two elastic telescopic rods are symmetrically fixedly installed on the moving plate. One end of the elastic telescopic rod is fixedly connected to the moving plate, and the other end of the elastic telescopic rod is fixedly provided with a connecting block. The connecting block is fixedly connected to the corresponding positioning rod. A wedge block is fixedly provided on one side of the connecting block. The two inclined plates are symmetrically fixedly installed at the bottom of the placement plate about the moving plate, and the inclined surface of the inclined plate is slidably connected to the corresponding wedge block.

[0014] Furthermore, a clamping plate is fixedly provided on the top of the slider, and the clamping plate is provided with a clamping component for pressing the metal sheet.

[0015] Furthermore, the clamping assembly includes a drive rack and a drive gear. The clamping plate has a through hole, and the drive rack is slidably disposed in the through hole. Two mounting plates are fixedly disposed on one side of the clamping plate at intervals. A drive shaft is rotatably disposed between the two mounting plates. A driven gear is fixedly sleeved on the drive shaft, and the drive gear is fixedly sleeved on the drive shaft. The drive gear meshes with the drive rack. A top plate is fixedly disposed at one end of the drive rack. A second spring is fixedly disposed between the top plate and the corresponding clamping plate. The clamping plate has a through groove, and a clamping plate is slidably disposed in the through groove. A driven rack is fixedly disposed at one end of the clamping plate, and the driven rack meshes with the driven gear.

[0016] Furthermore, each of the two inclined blocks has a cross groove on one side facing each other, and a cross slider is fixedly installed at both ends of the moving plate, with the cross slider slidably connected to the corresponding cross groove.

[0017] Furthermore, a vertical plate is fixedly installed on the top of the placement plate, an electric push rod is fixedly installed on one side of the vertical plate, and a push plate is fixedly installed at the output end of the electric push rod.

[0018] Furthermore, the welding mechanism includes a column and a welding torch. The column is mounted on a base plate, and a frame is slidably mounted on one side of the column. The column is equipped with a lifting component for driving the frame to move vertically. A sliding column is slidably mounted inside the frame, and the welding torch is fixedly mounted on one end of the sliding column. A power component for driving the sliding column to move horizontally is provided between the frame and the sliding column. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the lifting assembly and power assembly of the present invention;

[0021] Figure 3 This is a perspective view of the power assembly of the present invention from another angle;

[0022] Figure 4 For the present invention Figure 1 Enlarged view of point A;

[0023] Figure 5 This is a perspective view of the driving component of the present invention;

[0024] Figure 6 This is a perspective view of the transmission assembly and part of the drive assembly of the present invention;

[0025] Figure 7 This is a front view of the transmission assembly and part of the drive assembly of the present invention;

[0026] Figure 8 For the present invention Figure 4 Enlarged view of point B.

[0027] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Base; 3. Column; 301. First motor; 302. Guide groove; 303. Threaded rod; 304. Guide block; 4. Frame; 5. Sliding column; 501. Second motor; 502. First gear; 503. Drive rack; 6. Welding torch; 7. Support frame; 8. Placement plate; 9. Slide groove; 10. Slider; 11. Clamping plate; 12. Positioning groove; 13. Positioning rod; 14. Upright plate; 15. Electric push rod; 16. Push plate; 17. Third motor 18. Second gear; 19. Rotating shaft; 20. Gear ring; 21. Annular guide rail; 22. Drive rod; 23. Moving plate; 24. Inclined block; 25. Cross groove; 26. First spring; 27. Limiting rod; 28. Elastic telescopic rod; 29. ​​Connecting block; 30. Inclined wedge block; 31. Inclined plate; 32. Mounting plate; 33. Drive shaft; 34. Drive gear; 35. Drive rack; 36. Pressing plate; 37. Driven rack; 38. Driven gear; 39. Top plate; 40. Second spring. Detailed Implementation

[0028] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 and Figure 2 As shown, an automatic welding device includes a base plate 1. A base 2 is fixedly installed on one side of the top of the base plate 1. A welding mechanism for welding metal sheets is installed on the top of the base 2. The welding mechanism includes a column 3 and a welding torch 6. The bottom end of the column 3 is fixedly installed on the top of the base 2, and the column 3 is vertically arranged. A frame 4 is slidably installed on one side of the column 3. The frame 4 is horizontally arranged, and both ends of the frame 4 are open. A lifting assembly for driving the frame 4 to move vertically is installed on the column 3. The lifting assembly includes a first motor 301 and a threaded rod 303. A guide groove 302 is opened on one side of the column 3 along its length direction. The threaded rod 303 is rotatably installed in the guide groove 302 and is arranged along the length direction of the guide groove 302. Both ends of the threaded rod 303 are smooth rods, and both ends of the threaded rod 303 rotatably pass through the column 3. A guide block 304 is threadedly connected to the outer circumference of the threaded rod 303. The guide block 304 is slidably connected to the guide groove 302, and one side of the guide block 304 is fixedly connected to the frame 4. The first motor 301 is fixedly installed on the top of the column 3, and the output end of the first motor 301 passes through the column 3 and is coaxially fixedly connected to the threaded rod 303. By controlling the forward and reverse rotation of the first motor 301, the first motor 301 drives the threaded rod 303 to rotate, the threaded rod 303 drives the guide block 304 to move vertically back and forth along the guide groove 302, and the guide block 304 drives the frame 4 to move vertically back and forth.

[0030] like Figure 3As shown, a sliding column 5 is slidably installed inside the frame 4 along its length. A "T"-shaped groove is formed at the bottom of the sliding column 5 along its length. A "T"-shaped slider is fixedly installed on the bottom surface of the frame 4 along its length. The "T"-shaped slider and the "T"-shaped groove are slidably engaged, thereby improving the stability of the sliding column 5 as it slides inside the frame 4. A welding torch 6 is fixedly installed at one end of the sliding column 5 and is vertically arranged. A power assembly for driving the sliding column 5 to move horizontally is installed between the frame 4 and the sliding column 5. The power assembly includes a second motor 501 and a drive rack 503. The second motor 501 is fixedly installed on one side of the frame 4. The output end of the second motor 501 passes through the frame 4 and is fixedly fitted with a first gear 502. The drive rack 503 is fixedly installed on one side of the sliding column 5 and is arranged along the length of the sliding column 5. The drive rack 503 meshes with the second gear 18. By controlling the forward and reverse rotation of the second motor 501, the second motor 501 drives the first gear 502 to rotate, the first gear 502 drives the drive rack 503 to move, the drive rack 503 drives the sliding column 5 to move, so that the sliding column 5 can drive the welding torch 6 to move horizontally back and forth.

[0031] like Figure 1 and Figure 5 As shown, a support frame 7 is fixedly installed on the top of the base plate 1. The support frame 7 includes a support plate and a support frame 4. The bottom of the support frame 4 is fixedly connected to the base plate 1, and support columns are fixedly installed at the four corners of the top of the support frame 4. The support plate is fixedly installed on the top of the support columns. A rotating shaft 19 is rotatably installed at the center of the top of the support plate of the support frame 7, and a placement plate 8 is fixedly installed on the top of the rotating shaft 19. The placement plate 8 is equipped with alignment components for aligning two metal plates. Four alignment components are installed and arranged in a circumferential array along the top of the placement plate 8. Different operations can be carried out simultaneously around the placement plate 8, improving welding efficiency.

[0032] like Figures 4 to 6 As shown, the alignment assembly includes two sliders 10, and the placement plate 8 has two grooves 9, which are symmetrically arranged about the center line of the placement plate 8. The two sliders 10 are slidably installed in their respective grooves 9. A clamping plate 11 is fixedly installed on the top of each slider 10, and an inclined block 24 is fixedly installed on the bottom of each slider 10, forming an inverted V-shape. A movable plate 23 is slidably installed between the two inclined blocks 24. A cross groove 25 is formed along the length of each of the two inclined blocks 24 on their opposite sides. Cross blocks that fit into the cross grooves 25 are fixedly installed at both ends of the movable plate 23, and the cross blocks are slidably connected to the corresponding cross grooves 25. When the movable plate 23 moves vertically, it can drive the two inclined blocks 24 to move towards each other or away from each other.

[0033] like Figure 5As shown, the support frame 7 is equipped with a drive assembly for vertically moving the movable plate 23. The drive assembly includes a drive rod 22 and a rotating component for rotating the placement plate 8. The rotating component includes a third motor 17 and a gear ring 20. The third motor 17 is fixedly installed at the bottom of the support plate of the support frame 7. The output end of the third motor 17 passes through the support plate of the support frame 7 and is fixedly fitted with a second gear 18. The gear ring 20 is fixedly fitted on the outer circumference of the rotating shaft 19 and meshes with the second gear 18. An annular guide rail 21 is fixedly installed on the top of the support plate of the support frame 7. A first slope and a second slope are integrally formed along the circumference of the annular guide rail 21. The first slope and the second slope are arranged alternately. The slope surface of the first slope gradually increases in a clockwise direction, and the slope surface of the second slope gradually decreases in a clockwise direction. The annular guide rail 21 has a first working surface and a second working surface integrally formed along its circumference. The two sides of the first working surface are flush with the top of the first slope and the second slope, respectively, and the two sides of the second working surface are flush with the bottom of the first slope and the second slope, respectively.

[0034] like Figures 5 to 7 As shown, the top end of the drive rod 22 is fixedly installed at the bottom of the movable plate 23, and the drive rod 22 is vertically arranged. The bottom end of the drive rod 22 is located inside the annular guide rail 21 and slides in cooperation with the annular guide rail 21. The bottom end of the drive rod 22 is hemispherical or has a ball embedded in it (not shown in the figure) to reduce the friction between the drive rod 22 and the guide rail. A first spring 26 is fixedly installed between the movable plate 23 and the placement plate 8. A cavity is opened inside the drive rod 22 along its length direction. A limit rod 27 is slidably installed in the cavity. The top end of the limit rod 27 passes upward through the movable plate 23 and is fixedly connected to the bottom of the placement plate 8. The first spring 26 is sleeved on the outer periphery of the limit rod 27. One end of the first spring 26 is fixedly connected to the movable plate 23, and the other end of the first spring 26 is fixedly connected to the placement plate 8. By setting the limit rod 27, the first spring 26 is more stable when it extends and retracts, which facilitates the resetting of the movable plate 23.

[0035] Start the third motor 17, which drives the second gear 18 to rotate. The second gear 18 drives the rotating shaft 19 to rotate through the gear ring 20. The rotating shaft 19 drives the placement plate 8 to rotate. The placement plate 8 drives the inclined block 24 to rotate through the slider 10. The inclined block 24 drives the drive rod 22 to slide along the annular guide rail 21 through the moving plate 23. When the bottom end of the drive rod 22 slides and engages with the first ramp, it drives the moving plate 23 to move upward. The upward movement of the moving plate 23 drives the two inclined blocks 24 to move towards each other. The two inclined blocks 24 moving towards each other drive the two sliders 10 to move towards each other. The two sliders 10 drive the two clamping plates 11 to move towards each other. The two clamping plates 11 moving towards each other push the two metal plates to center. As the moving plate 23 moves upward and compresses the first spring 26, when the driving rod 22 moves clockwise along the annular guide rail 21 and slides in cooperation with the second ramp, the restoring force of the first spring 26 drives the driving rod 22 to move downward. The downward movement of the driving rod 22 causes the two clamping plates 11 to move in opposite directions, thereby releasing the clamping of the two metal plates.

[0036] like Figures 4 to 7 As shown, the alignment assembly also includes two sets of positioning rods 13, each set having two positioning rods 13. The placement plate 8 has two sets of positioning slots 12 symmetrically arranged about the center line of the placement plate 8. The positioning rods 13 are slidably installed in their corresponding positioning slots 12. The moving plate 23 is equipped with a transmission assembly for driving the two sets of positioning rods 13 to move towards or away from each other. The transmission assembly includes two elastic telescopic rods 28 and two inclined plates 31. The two elastic telescopic rods 28 are symmetrically fixedly installed on the moving plate 23. One end of each elastic telescopic rod 28 is fixedly connected to the moving plate 23, and the other end is fixedly connected to a connecting block 29, which is fixedly connected to the corresponding positioning rod 13. A wedge block 30 is fixedly installed on one side of the connecting block 29. The two inclined plates 31 are symmetrically fixedly installed at the bottom of the placement plate 8 about the moving plate 23, and the inclined plates 31 have a triangular structure. The inclined surfaces of the inclined plates 31 are slidably fitted with the corresponding wedge blocks 30. When the movable plate 23 moves upward, it simultaneously drives the two elastic telescopic rods 28 upward. The two elastic telescopic rods 28 then drive their corresponding connecting blocks 29 upward. The connecting blocks 29 simultaneously drive the positioning rods 13 and the wedge blocks 30 upward. The wedge blocks 30 slide against the inclined surface of the inclined plate 31, and also drive the connecting blocks 29 towards the movable plate 23. Thus, the two connecting blocks 29 drive the two sets of positioning rods 13 to move towards each other. The combined action of the two sets of positioning rods 13 and the two clamping plates 11 moving towards each other allows the edges of the two metal plates to be aligned in different orientations. After the edges are aligned, a weld is formed between the two metal plates, and this weld is precisely below the welding torch 6, thus placing the weld in the predetermined welding position, effectively avoiding deviations during welding and improving welding quality.

[0037] The elastic telescopic rod 28 includes a sleeve and a rod. One end of the sleeve is fixedly connected to the movable plate 23, and the rod is slidably installed inside the sleeve. One end of the rod is fixedly connected to the connecting block 29. A third spring is sleeved on the outer periphery of the sleeve and the rod. Through the cooperation of the third spring, the rod, and the sleeve, the elastic telescopic rod 28 can realize the telescopic function, and at the same time, it is convenient for the positioning rod 13 to be reset.

[0038] like Figure 8 As shown, the clamping plate 11 is equipped with a clamping assembly for pressing metal sheets. The clamping assembly includes a drive rack 35 and a drive gear 34. A through hole is provided at the bottom of the clamping plate 11, through which the drive rack 35 passes and is slidably installed. Two symmetrically arranged mounting plates 32 are fixedly installed on one side of the clamping plate 11, and a drive shaft 33 is rotatably installed between the two mounting plates 32. The two ends of the drive shaft 33 rotatably pass through the corresponding mounting plates 32. Two symmetrically arranged driven gears 38 are fixedly sleeved on the outer periphery of the drive shaft 33, and the drive gear 34 is fixedly sleeved on the outer periphery of the drive shaft 33, meshing with the drive rack 35. The clamping plate 11 has symmetrically arranged through slots, and a clamping plate 36 is slidably installed in the slots. Both ends of the clamping plate 36 extend outside the slots. One end of the clamping plate 36 is used to clamp the metal sheet, and the other end of the clamping plate 36 is fixedly installed with a driven rack 37, which meshes with a corresponding driven gear 38. One end of the driving rack 35 abuts against the metal sheet, and the other end of the driving rack 35 is fixedly installed with a top plate 39. A second spring 40 is fixedly installed between the top plate 39 and the corresponding clamping plate 11. One end of the second spring 40 is fixedly connected to the clamping plate 11, and the other end of the second spring 40 is fixedly connected to the top plate 39. When the two clamping plates 11 move towards each other, the clamping plates 11 will drive the driving rack 35 to move synchronously. The elastic force of the second spring 40 is set not less than the thrust of the driving rack 35 to push the metal sheet, so that after one end of the driving rack 35 contacts the metal sheet, it pushes the metal sheet to move. After the two metal plates come into contact, the two clamping plates 11 continue to move towards each other. At this time, the driving rack 35 begins to move due to the reaction force of the metal plates, driving the driving gear 34 to rotate. The driving gear 34 drives the two driven gears 38 to rotate synchronously through the driving shaft 33. The two driven gears 38 respectively drive the corresponding driven racks 37 to move downwards, and the driven racks 37 in turn drive the pressing plate 36 to move downwards. When the clamping plate 11 abuts against the metal plates, the pressing plate 36 also comes into contact with the surface of the metal plates, thereby achieving stable pressing of the two metal plates and preventing them from moving during the welding process and affecting the welding effect.

[0039] like Figure 1 and Figure 4As shown, a vertical plate 14 is fixedly installed on the top of the placement plate 8, and an electric push rod 15 is fixedly installed on one side of the vertical plate 14. A push plate 16 is fixedly installed at the output end of the electric push rod 15. After the two metal plates are welded and the clamping and positioning of the metal plates are released, the electric push rod 15 is started. The electric push rod 15 drives the push plate 16 to move, and the push plate 16 pushes the welded metal plates onto the external conveyor belt, which facilitates the transfer of the welded metal plates.

[0040] Working principle:

[0041] In the initial state, the tops of the two sets of positioning rods 13 are flush with the top surface of the placement plate 8.

[0042] In use, place the two metal plates to be welded in the placement area formed by the two sets of positioning rods 13 and the two clamping plates 11, start the third motor 17, the third motor 17 drives the second gear 18 to rotate, the second gear 18 drives the rotating shaft 19 to rotate through the gear ring 20, and the rotating shaft 19 drives the placement plate 8 to rotate 90 degrees clockwise.

[0043] During the clockwise 90-degree rotation of the placement plate 8, the placement plate 8 drives the inclined block 24 to rotate via the slider 10. The inclined block 24 drives the drive rod 22 to slide clockwise along the annular guide rail 21 via the moving plate 23. When the bottom end of the drive rod 22 slides along the slope of the first slope, it drives the moving plate 23 to move upward. The upward movement of the moving plate 23 drives the two inclined blocks 24 to move towards each other. The two inclined blocks 24 moving towards each other drive the two sliders 10 to move towards each other. The two sliders 10 drive the two clamping plates 11 to move towards each other. The two clamping plates 11 drive the corresponding active racks 35 to move synchronously. After one end of the active rack 35 contacts the metal plate, it pushes the metal plate to move. After the two metal plates contact each other, the two clamping plates 11 continue to move towards each other. At this time, the active rack 35 begins to move due to the reaction force of the metal plate, and at the same time drives the active gear 34 to rotate. The driving gear 34 drives two driven gears 38 to rotate synchronously through the driving shaft 33. The two driven gears 38 respectively drive the corresponding driven racks 37 to move downward, and the driven racks 37 drive the pressure plate 36 to move downward.

[0044] When the movable plate 23 moves upward, it simultaneously drives the two elastic telescopic rods 28 to move upward. The two elastic telescopic rods 28 then drive their corresponding connecting blocks 29 to move upward. The connecting blocks 29 simultaneously drive the positioning rods 13 and the wedge blocks 30 to move upward. The wedge blocks 30 slide against the inclined surface of the inclined plate 31, and also drive the connecting blocks 29 to move towards the movable plate 23. Thus, the two connecting blocks 29 drive the two sets of positioning rods 13 to move towards each other, centering the two metal plates from another position.

[0045] When the placement plate 8 rotates 90 degrees clockwise, the bottom end of the drive rod 22 contacts the first working surface. At this point, the drive rod 22 can no longer move upwards. Furthermore, the combined action of the two sets of positioning rods 13 and the two clamping plates 11 moving in opposite directions aligns the edges of the two metal plates precisely from different angles. Simultaneously, one end of the clamping plate 36 also contacts the surface of the metal plates, achieving a clamping effect on the two metal plates. After the edges of the two metal plates are aligned, the weld seam formed between them is directly below the welding torch 6.

[0046] The first motor 301 is started and rotates, driving the threaded rod 303 to rotate. The threaded rod 303 drives the guide block 304 to move vertically along the guide groove 302. The guide block 304 drives the frame 4 to move vertically, which in turn drives the vertical sliding column 5 to move. The sliding column 5 then drives the welding torch 6 to move vertically, thus moving the welding torch 6 to a suitable distance from the weld seam of the two metal plates. The welding torch 6 is then started to weld the two metal plates. Simultaneously, the second motor 501 is started, driving the first gear 502 to rotate. The first gear 502 drives the drive rack 503 to move, which in turn drives the sliding column 5 to move. The sliding column 5 then drives the welding torch 6 to move horizontally along the weld seam of the two metal plates, thus welding the two metal plates.

[0047] After welding two metal plates, the placement plate 8 is rotated 90 degrees clockwise to move the next set of metal plates to be welded, ensuring the continuity of the welding work. After the welded metal plate is rotated 90 degrees clockwise, a polishing machine (not shown in the figure) can be used to polish the weld seam, making the weld seam smoother and reducing warping and burrs, thus improving the welding quality. The polishing machine is existing technology and will not be described in detail here. The welded metal plate is rotated 90 degrees. During this process, the bottom end of the drive rod 22 slides along the second slope and contacts the second working surface, thereby releasing the positioning clamp on the metal plate and restoring the positioning rod 13 to its initial state. Then, the corresponding electric push rod 15 is activated, which drives the push plate 16 to move. The push plate 16 pushes the welded metal plate onto the external conveyor belt for easy transfer of the welded metal plate.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic welding apparatus comprising a base plate (1) provided on one side thereof with a welding mechanism for welding a metal sheet, characterized in that, The bottom plate (1) is fixedly provided with a support frame (7), the top of the support frame (7) is provided with a placing plate (8), the placing plate (8) is provided with an alignment assembly for aligning two metal plates, the alignment assembly comprises two sliding blocks (10) and two groups of positioning rods (13), the placing plate (8) is symmetrically provided with a sliding groove (9), the two sliding blocks (10) are respectively and slidably arranged in the corresponding sliding grooves (9), the bottom of each sliding block (10) is fixedly provided with an inclined block (24), a moving plate (23) is slidably arranged between the two inclined blocks (24), the support frame (7) is provided with a driving assembly for driving the moving plate (23) to vertically move, the placing plate (8) is symmetrically provided with two groups of positioning grooves (12), the positioning rods (13) are slidably arranged in the corresponding positioning grooves (12), the moving plate (23) is provided with a transmission assembly for driving the two groups of positioning rods (13) to move towards each other or away from each other, when the driving assembly drives the moving plate (23) to vertically move, the moving plate (23) drives the two sliding blocks (10) to move towards each other through the two inclined blocks (24), and the moving plate (23) drives the two groups of positioning rods (13) to move towards each other through the transmission assembly, so that the two groups of positioning rods (13) and the two sliding blocks (10) respectively move towards each other, the edges of the two metal plates are aligned in the middle, and a weld is formed; The driving assembly comprises a driving rod (22) and a rotating piece for driving the placing plate (8) to rotate, the top of the support frame (7) is fixedly provided with an annular guide rail (21), one end of the driving rod (22) is fixedly installed at the bottom of the moving plate (23), the other end of the driving rod (22) is in sliding connection with the annular guide rail (21), the annular guide rail (21) is fixedly provided with a first slope and a second slope along the circumference thereof, the two inclined blocks (24) are in inverted V shape, a first spring (26) is fixedly arranged between the moving plate (23) and the placing plate (8), and the placing plate (8) drives the driving rod (22) to slide along the annular guide rail (21) when the placing plate (8) rotates, the driving rod (22) drives the moving plate (23) to move upwards when the driving rod (22) is in sliding connection with the first slope, and the driving rod (22) drives the moving plate (23) to move downwards under the restoring force of the first spring (26) when the driving rod (22) is in sliding connection with the second slope; The transmission assembly comprises two elastic telescopic rods (28) and two inclined plates (31), the two elastic telescopic rods (28) are fixedly installed on the moving plate (23) in a symmetrical mode, one end of each elastic telescopic rod (28) is fixedly connected with the moving plate (23), the other end of each elastic telescopic rod (28) is fixedly provided with a connecting block (29), the connecting block (29) is fixedly connected with the corresponding positioning rod (13), one side of the connecting block (29) is fixedly provided with an inclined wedge block (30), and the two inclined plates (31) are fixedly arranged on the bottom of the placing plate (8) in a symmetrical mode about the moving plate (23), the inclined surface of the inclined plate (31) is in sliding connection with the corresponding inclined wedge block (30); The top of the sliding block (10) is fixedly provided with a clamping plate (11), and the clamping plate (11) is provided with a pressing assembly for pressing the metal plate.

2. The automatic welding apparatus according to claim 1, characterized by The rotating part comprises a third motor (17) and a gear ring (20), the third motor (17) is fixedly arranged on the support frame (7), the output end of the third motor (17) is fixedly provided with a second gear (18), the top of the support frame (7) is rotatably provided with a rotating shaft (19), the top of the rotating shaft (19) is fixedly connected with the placing plate (8), the gear ring (20) is fixedly sleeved on the outer periphery of the rotating shaft (19), and the gear ring (20) is engaged with the second gear (18).

3. The automatic welding apparatus according to claim 1, characterized by The alignment assembly is provided with four alignment assemblies, and the four alignment assemblies are arranged in a circumferential array on the top of the placing plate (8).

4. The automatic welding apparatus according to claim 1, characterized by The pressing assembly comprises a driving rack (35) and a driving gear (34), the clamping plate (11) is provided with a through hole, the driving rack (35) is slidably arranged in the through hole, one side of the clamping plate (11) is fixedly provided with two installation plates (32) arranged at intervals, a driving shaft (33) is rotatably arranged between the two installation plates (32), the driving shaft (33) is fixedly sleeved with a driven gear (38), the driving gear (34) is fixedly sleeved on the driving shaft (33), the driving gear (34) is engaged with the driving rack (35), one end of the driving rack (35) is fixedly provided with a top plate (39), the top plate (39) and the corresponding clamping plate (11) are fixedly provided with a second spring (40), the clamping plate (11) is provided with a through slot, a pressing plate (36) is slidably arranged in the through slot, one end of the pressing plate (36) is fixedly provided with a driven rack (37), and the driven rack (37) is engaged with the driven gear (38).

5. The automatic welding apparatus according to claim 1, characterized by The opposite sides of the two inclined blocks (24) are provided with cross grooves (25), and the two ends of the moving plate (23) are fixedly provided with cross sliding blocks which are slidably connected with the corresponding cross grooves (25).

6. The automatic welding apparatus according to claim 1, wherein The top of the placing plate (8) is fixedly provided with a vertical plate (14), one side of the vertical plate (14) is fixedly provided with an electric push rod (15), and the output end of the electric push rod (15) is fixedly provided with a push plate (16).

7. The automatic welding apparatus according to claim 1, characterized by The welding mechanism comprises a column (3) and a welding gun (6), the column (3) is arranged on the bottom plate (1), one side of the column (3) is slidably provided with a frame (4), the column (3) is provided with a lifting assembly for driving the frame (4) to vertically move, the frame (4) is slidably provided with a sliding column (5), the welding gun (6) is fixedly arranged at one end of the sliding column (5), and the frame (4) and the sliding column (5) are provided with a power assembly for driving the sliding column (5) to horizontally move.

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