Large-section high-precision welding device and welding method thereof

Abstract

The application discloses a large-section high-precision welding device and a welding method thereof, and relates to the technical field of welding devices. In order to solve the problem that the existing welding device is fixedly connected with connecting rods through two mechanical clamps, and the two mechanical clamps clamp the two sides of the outer wall of a super capacitor, but the clamping mode limits the edge size of the welding device, and the clamping mode of the side affects the clamping operation of the large-section welding, one side of the welding robot is provided with two section clamping mechanisms, one end of the section clamping mechanism is provided with a section clamping mechanism mounting seat, a clamping adjusting frame is rotationally arranged at the end of the section clamping mechanism mounting seat close to the welding robot, a clamping positioning mechanism is arranged above one end of the clamping adjusting frame, a clamping positioning seat is arranged at the lower end of the clamping positioning mechanism, and a magnetic locking mechanism is arranged at the upper end of the clamping positioning mechanism.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a high-precision welding device for large profiles and its welding method. Background Technology

[0002] A welding apparatus is a device used to perform welding processes. It includes a welding machine, welding process equipment, and welding auxiliary tools. The welding machine is the main equipment for the welding process, providing the necessary heat source and pressure to melt and bond the workpieces at the contact points. Welding process equipment includes various clamps, supports, and positioning devices to fix and position the workpieces, ensuring the stability and accuracy of the welding process. Welding auxiliary tools include various measuring tools, protective devices, and cleaning tools to assist in the welding process. During welding, the welding apparatus needs to meet a series of requirements, such as robustness and durability, stable operating characteristics, high reliability, convenient adjustment, intuitive operation, good compensation capability, and economic practicality. These requirements ensure that the welding apparatus maintains stable performance and provides high-quality welding results during long-term use. Meanwhile, with the development of welding technology, welding apparatus is constantly undergoing technological innovation and upgrading. Modern welding apparatus has achieved automation and intelligence, which can greatly improve welding efficiency and quality while reducing labor intensity.

[0003] Chinese Patent Publication No. CN220407625U discloses a clamping welding device, including a bracket, clamping components, a welding component, and a control computer. The bracket has a first ball screw assembly, a second ball screw assembly drivenly connected to the first ball screw assembly, and a third ball screw assembly drivenly connected to the second ball screw assembly. The third ball screw assembly is drivenly connected to the welding component. The bracket has at least two sets of clamping components, corresponding to the lower sides of the welding component. In this invention, two sets of clamping components clamp two profiles to be welded together. The first, second, and third ball screw assemblies move to move the welding component, adjusting its position to align with the welding area between the two profiles. This allows the welding component to achieve three-axis movement adjustment for alignment and welding, making alignment quick and convenient, resulting in high welding efficiency.

[0004] The existing technical solutions mentioned above have the following drawbacks: most existing welding devices clamp the welding machine from both sides, but this clamping method limits the edge size of the welding device. Since large profiles are large, the side clamping method will affect the clamping operation when welding large profiles. Therefore, we propose a high-precision welding device and welding method for large profiles to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision welding device and welding method for large profiles, in order to solve the problem mentioned in the background art that most existing welding devices clamp the welding machine from both sides. However, this clamping method limits the edge size of the welding device. Since large profiles are large, the side clamping method will affect the clamping operation during the welding of large profiles.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision welding device for large profiles, comprising a welding robot, two profile clamping mechanisms on one side of the welding robot, a profile clamping mechanism slide rail below the profile clamping mechanism, a profile clamping mechanism mounting base at one end of the profile clamping mechanism, a clamping adjustment frame rotatably mounted on the end of the profile clamping mechanism mounting base near the welding robot, a clamping positioning mechanism mounted above one end of the clamping adjustment frame, a clamping positioning seat at the lower end of the clamping positioning mechanism, a magnetic locking mechanism at the upper end of the clamping positioning mechanism, six electromagnets arranged in a ring inside the clamping positioning seat, six clamping blocks arranged in a ring at the lower end of the magnetic locking mechanism, with the clamping blocks positioned above the electromagnets, magnets arranged inside the clamping blocks, and the magnets corresponding to the electromagnets, and a plate material disposed between the clamping blocks and the clamping positioning seat.

[0007] Preferably, the lower end of the welding robot is provided with a welding robot mounting base, a first rotating seat is rotatably provided above the welding robot mounting base, a first rotating motor of the welding robot is provided above the first rotating seat, and the first rotating motor of the welding robot is fixedly connected to the first rotating seat, and the output end of the first rotating motor of the welding robot is drivenly connected to the welding robot mounting base.

[0008] Preferably, a first support arm is provided above the first rotating seat, and the first support arm is rotatably connected to the first rotating seat. A third rotary motor of the welding robot is fixedly installed on one side of the lower end of the first support arm. The output end of the third rotary motor of the welding robot is connected to the first rotating seat in a transmission manner. A connecting seat is fixedly installed on the upper end of the first support arm, and a second support arm is provided on one side of the connecting seat.

[0009] Preferably, a second rotary motor of the welding robot is fixedly installed inside one side of the connecting seat, the output end of the second rotary motor of the welding robot is connected to the second support arm for transmission, the connecting seat is rotatably connected to the second support arm, a fourth rotary motor of the welding robot is installed at the upper end of the other side of the second support arm, a welding gun holder is installed at the lower end of the other side of the second support arm, and a welding gun is installed inside the lower end of the welding gun holder.

[0010] Preferably, a first rotary motor for the profile clamping mechanism is installed on the other side of the profile clamping mechanism mounting base, and the output end of the first rotary motor for the profile clamping mechanism is connected to the clamping adjustment frame. Profile clamping mechanism track wheels are respectively provided at the four corners of the lower end of the profile clamping mechanism mounting base, and the profile clamping mechanism track wheels are rolledly connected to the profile clamping mechanism slide rail. A second rotary motor for the profile clamping mechanism is provided at the lower middle position on one side of the clamping adjustment frame, and the second rotary motor for the profile clamping mechanism is fixedly connected to the clamping adjustment frame. The output end of the second rotary motor for the profile clamping mechanism is connected to the clamping positioning mechanism.

[0011] Preferably, a plate adjustment mechanism fixing frame is provided outside the middle position of the magnetic locking mechanism, a plate adjustment mechanism is provided inside the plate adjustment mechanism fixing frame, and the plate adjustment mechanism fixing frame and the clamping block are fixedly connected by a connecting rod.

[0012] Preferably, the sheet material adjustment mechanism includes an electric telescopic cylinder for sheet material adjustment, an adjustment wheel limit seat, a first drive motor for the adjustment wheel, an adjustment wheel drive rod, a limit plate, an adjustment wheel drive rod groove, an adjustment wheel frame, a second drive motor for the adjustment wheel, and an adjustment wheel. The adjustment wheel limit seat is located at the middle position of the sheet material adjustment mechanism, and two electric telescopic cylinders for sheet material adjustment are symmetrically arranged between the adjustment wheel limit seat and the inner wall of the fixing frame of the sheet material adjustment mechanism. The upper end of the electric telescopic cylinder for sheet material adjustment is fixedly connected to the inner wall of the fixing frame of the sheet material adjustment mechanism, and the lower end of the electric telescopic cylinder for sheet material adjustment is fixedly connected to the adjustment wheel limit seat.

[0013] Preferably, a first drive motor for the adjusting wheel is provided at the middle position above the adjusting wheel limit seat. An adjusting wheel drive rod groove is provided inside the adjusting wheel limit seat. An adjusting wheel frame is provided below the adjusting wheel limit seat. An adjusting wheel drive rod is fixedly provided at the upper end of the adjusting wheel frame and is rotatably connected to the adjusting wheel drive rod groove. The adjusting wheel drive rod is driven by the output end of the first drive motor for the adjusting wheel. An adjusting wheel is provided inside the lower part of the adjusting wheel frame. A second drive motor for the adjusting wheel is fixedly installed on one side of the adjusting wheel frame. The output end of the second drive motor for the adjusting wheel is driven by the adjusting wheel frame.

[0014] Preferably, a ball bearing plate groove is formed inside the middle position of the clamping and positioning seat, and a ball bearing plate is movably arranged inside the ball bearing plate groove. A ball bearing is rolled in a rectangular shape inside the upper part of the ball bearing plate. A ball bearing plate electric telescopic cylinder groove is formed below the ball bearing plate groove, and a ball bearing plate electric telescopic cylinder is arranged inside the ball bearing plate electric telescopic cylinder groove. The lower end of the ball bearing plate electric telescopic cylinder is fixedly connected to the bottom end of the inner wall of the ball bearing plate electric telescopic cylinder groove, and the upper end of the ball bearing plate electric telescopic cylinder is fixedly connected to the ball bearing plate. The ball bearing is in contact with the lower surface of the plate.

[0015] A welding method for a high-precision welding device for large profiles includes the following steps:

[0016] Step 1: Place a sheet metal plate between the clamping positioning seat and the clamping block. Extend the electric telescopic cylinder of the ball bearing plate to make the balls of the ball bearing plate fit against the sheet metal plate, while separating the sheet metal plate from the clamping positioning seat. Then extend the electric telescopic cylinder of the sheet metal adjustment mechanism. The electric telescopic cylinder of the sheet metal adjustment mechanism pushes the adjusting wheel limit seat downward. The adjusting wheel limit seat then drives the adjusting wheel frame and the adjusting wheel downward, so that the adjusting wheel fits against the upper surface of the sheet metal plate. Adjust the angle and position of the sheet metal plate according to the welding position of the sheet metal plate. Control the output end of the first drive motor of the adjusting wheel to rotate to adjust the angle of the adjusting wheel drive rod. The adjusting wheel drive rod drives the adjusting wheel frame to rotate, thereby adjusting the adjustment wheel. The adjusting wheel drives the sheet metal plate to rotate under the rolling of the balls. Then start the second drive motor of the adjusting wheel. The second drive motor of the adjusting wheel drives the adjusting wheel to rotate, and the adjusting wheel drives the sheet metal plate to move horizontally.

[0017] Step 2: After adjustment, retract the electric telescopic cylinder of the plate adjustment mechanism and the electric telescopic cylinder of the ball plate. By controlling the opening and closing state of the electronic switch or relay, the current path is changed, thereby changing the current direction of the electromagnet. The change of current direction changes the electrodes of the electromagnet. The change of electrodes causes the electromagnet and the magnet to be attracted due to the attraction between opposite poles. The magnetic attraction causes the electromagnet and the magnet to move closer to each other, clamping the plate between the electromagnet and the magnet.

[0018] Step 3: Using the methods described in Step 1 and Step 2 above, adjust and clamp the other sheet material between the electromagnet and magnet of the adjacent profile clamping mechanism;

[0019] Step 4: The first rotary motor of the profile clamping mechanism drives the clamping adjustment frame to rotate in the front-to-back direction, and the second rotary motor of the profile clamping mechanism drives the clamping positioning seat to rotate in the horizontal direction. This drives the profile clamping mechanism track wheel of the profile clamping mechanism to roll. The rolling profile clamping mechanism track wheel rolls in the profile clamping mechanism slide rail, thereby causing the two driving profile clamping mechanisms to move closer to each other, so that the two plates are close to each other until the welding distance is reached.

[0020] Step 5: Adjust the welding robot to perform welding operations. Start the first rotating seat to adjust the horizontal tilt angle between the welding robot fixed seat and the first rotating seat. Adjust the vertical tilt angle between the first rotating seat and the first support arm through the third rotating motor of the welding robot. Adjust the front-to-back angle between the connecting seat and the second support arm through the second rotating motor of the welding robot. Adjust the horizontal tilt angle between the second support arm and the welding torch seat through the fourth rotating motor of the welding robot. This allows for flexible adjustment of the welding torch. When the welding torch is aligned with the welding area, the welding operation begins.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention uses a profile clamping mechanism to clamp sheet metal. Magnetic attraction causes electromagnets and magnets to stably clamp the sheet metal between them, without obstructing the sides of the sheet metal. This allows for clamping operations on sheet metal of different sizes. During clamping, the electromagnets and magnets attract each other. During loading and unloading, the current path is changed by controlling the opening and closing state of electronic switches or relays, thereby changing the current direction of the electromagnets. This change in current direction alters the electrodes of the electromagnets, causing the electromagnets and magnets to repel each other due to like poles, thus lifting all six clamping blocks simultaneously. Due to the mutual magnetic force, the six clamping blocks are suspended above the clamping blocks. The position and angle of the sheet metal can be adjusted through the cooperation of the sheet metal adjustment mechanism and the ball bearing plate. This solves the problem that most existing welding devices clamp the welding machine from both sides, which limits the edge dimensions of the welding device. For large profiles, the side clamping method affects the clamping operation during welding.

[0023] 2. This invention incorporates multiple joints on a welding robot to achieve multi-directional angle adjustment, enabling flexible adjustment of the welding torch. The first rotating seat adjusts the horizontal tilt angle between the welding robot's fixed base and the first rotating seat. The third rotating motor of the welding robot adjusts the vertical tilt angle between the first rotating seat and the first support arm. The second rotating motor of the welding robot adjusts the front-to-back angle between the connecting seat and the second support arm. The fourth rotating motor of the welding robot adjusts the horizontal tilt angle between the second support arm and the welding torch holder, thus allowing for flexible adjustment of the welding torch. Meanwhile, the first rotating motor of the profile clamping mechanism drives the clamping adjustment frame to rotate in the front-to-back direction, and the second rotating motor of the profile clamping mechanism drives the clamping positioning seat to rotate in the horizontal direction, allowing the plate material to also be adjusted in angle and position. This improves the flexibility of angle adjustment during welding and enhances welding accuracy. Attached Figure Description

[0024] Figure 1 This is the front view of the present invention;

[0025] Figure 2 This is a schematic diagram of the clamping and positioning mechanism in this invention;

[0026] Figure 3 This is a top view of the fixing frame, connecting rod, and clamping block of the plate adjustment mechanism in this invention;

[0027] Figure 4 In this invention Figure 2 A magnified view of a portion of area A;

[0028] Figure 5 In this invention Figure 2 A magnified view of a portion of area B.

[0029] In the diagram: 1. Welding robot; 2. Profile clamping mechanism; 3. Welding robot mounting base; 4. First rotating base; 5. First rotary motor of the welding robot; 6. First support arm; 7. Connecting base; 8. Second support arm; 9. Second rotary motor of the welding robot; 10. Welding torch holder; 11. Welding torch; 12. Third rotary motor of the welding robot; 13. Profile clamping mechanism slide rail; 14. Profile clamping mechanism mounting base; 15. First rotary motor of the profile clamping mechanism; 16. Clamping adjustment frame; 17. Clamping positioning mechanism; 18. Second rotary motor of the profile clamping mechanism; 19. Profile clamping mechanism track wheel; 20. Clamping positioning base; 21. 21. Electromagnet; 22. Plate; 23. Connecting rod; 24. Clamping block; 25. Magnet; 26. Ball bearing plate; 27. Plate adjusting mechanism fixing frame; 28. Plate adjusting mechanism; 29. ​​Plate adjusting mechanism electric telescopic cylinder; 30. Adjusting wheel limit seat; 31. Adjusting wheel first drive motor; 32. Adjusting wheel drive rod; 33. Limit plate; 34. Adjusting wheel drive rod slot; 35. Adjusting wheel frame; 36. Adjusting wheel second drive motor; 37. Adjusting wheel; 38. Ball bearing plate electric telescopic cylinder slot; 39. Ball bearing plate electric telescopic cylinder; 40. Ball; 41. Ball bearing plate slot; 42. Magnetic locking mechanism; 43. Welding robot fourth rotary motor. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Please see Figure 1-5One embodiment of the present invention provides a high-precision welding device for large profiles, comprising a welding robot 1. Two profile clamping mechanisms 2 are arranged on one side of the welding robot 1. A profile clamping mechanism slide rail 13 is arranged below the profile clamping mechanism 2. A profile clamping mechanism mounting base 14 is arranged at one end of the profile clamping mechanism 2. A clamping adjustment frame 16 is rotatably arranged at the end of the profile clamping mechanism mounting base 14 near the welding robot 1. A clamping positioning mechanism 17 is installed above one end of the clamping adjustment frame 16. The clamping and positioning mechanism 17 has a clamping and positioning seat 20 at its lower end and a magnetic locking mechanism 42 at its upper end. The clamping and positioning seat 20 has six electromagnets 21 arranged in a ring inside. The magnetic locking mechanism 42 has six clamping blocks 24 arranged in a ring at its lower end, and the clamping blocks 24 are located above the electromagnets 21. The clamping blocks 24 have magnets 25 arranged inside, and the magnets 25 are arranged corresponding to the electromagnets 21. A plate 22 is arranged between the clamping blocks 24 and the clamping and positioning seat 20.

[0032] The profile clamping mechanism 2 clamps the plate 22. Magnetic attraction causes the electromagnet 21 and magnet 25 to stably clamp the plate between them, without obstructing the sides of the plate 22. This meets the clamping requirements of plates 22 of different sizes. During clamping, the electromagnet 21 and magnet 25 attract each other. During loading and unloading, the current path is changed by controlling the opening and closing state of the electronic switch or relay, thereby changing the current direction of the electromagnet. This change in current direction alters the electrodes of the electromagnet 21. Due to the repulsion between like poles, the electromagnet 21 and magnet 25 lift the six clamping blocks 24 simultaneously. The six clamping blocks 24 are suspended above the clamping positioning seat 20 due to the mutual magnetic force. The position and angle of the plate 22 are adjusted by the cooperation of the plate adjustment mechanism 28 and the ball bearing plate 26.

[0033] Please see Figure 1 The lower end of the welding robot 1 is provided with a welding robot fixed base 3, and a first rotating base 4 is rotatably provided above the welding robot fixed base 3. A first rotating motor 5 of the welding robot is provided above the first rotating base 4, and the first rotating motor 5 of the welding robot is fixedly connected to the first rotating base 4. The output end of the first rotating motor 5 of the welding robot is connected to the welding robot fixed base 3 for transmission.

[0034] Please see Figure 1 A first support arm 6 is provided above the first rotating seat 4, and the first support arm 6 is rotatably connected to the first rotating seat 4. A third rotary motor 12 of the welding robot is fixedly installed on one side of the lower end of the first support arm 6. The output end of the third rotary motor 12 of the welding robot is connected to the first rotating seat 4 in a transmission manner. A connecting seat 7 is fixedly installed on the upper end of the first support arm 6, and a second support arm 8 is provided on one side of the connecting seat 7.

[0035] Please see Figure 1 The second rotary motor 9 of the welding robot is fixedly installed inside one side of the connecting seat 7. The output end of the second rotary motor 9 of the welding robot is connected to the second support arm 8 for transmission. The connecting seat 7 is rotatably connected to the second support arm 8. The fourth rotary motor 43 of the welding robot is installed at the upper end of the other side of the second support arm 8. The welding gun seat 10 is installed at the lower end of the other side of the second support arm 8. The welding gun 11 is installed inside the lower end of the welding gun seat 10.

[0036] Please see Figure 1 On the other side of the profile clamping mechanism mounting base 14, a first rotary motor 15 for the profile clamping mechanism is installed, and the output end of the first rotary motor 15 for the profile clamping mechanism is connected to the clamping adjustment frame 16. At the four corners of the lower end of the profile clamping mechanism mounting base 14, there are profile clamping mechanism track wheels 19 respectively, and the profile clamping mechanism track wheels 19 are rotatably connected to the profile clamping mechanism slide rail 13. At the lower middle position on one side of the clamping adjustment frame 16, a second rotary motor 18 for the profile clamping mechanism is installed, and the second rotary motor 18 for the profile clamping mechanism is fixedly connected to the clamping adjustment frame 16. The output end of the second rotary motor 18 for the profile clamping mechanism is connected to the clamping positioning mechanism 17.

[0037] Please see Figure 2 The magnetic locking mechanism 42 has a plate adjustment mechanism fixing frame 27 on the outside at the middle position. The plate adjustment mechanism fixing frame 27 has a plate adjustment mechanism 28 inside. The plate adjustment mechanism fixing frame 27 and the clamping block 24 are fixedly connected by a connecting rod 23.

[0038] Please see Figure 2-4 The sheet material adjustment mechanism 28 includes an electric telescopic cylinder 29, an adjustment wheel limit seat 30, a first drive motor 31 for the adjustment wheel, an adjustment wheel drive rod 32, a limit plate 33, an adjustment wheel drive rod groove 34, an adjustment wheel frame 35, a second drive motor 36 for the adjustment wheel, and an adjustment wheel 37. The adjustment wheel limit seat 30 is located at the middle position of the sheet material adjustment mechanism 28, and two electric telescopic cylinders 29 are symmetrically arranged between the adjustment wheel limit seat 30 and the inner wall of the sheet material adjustment mechanism fixing frame 27. The upper end of the electric telescopic cylinder 29 is fixedly connected to the inner wall of the sheet material adjustment mechanism fixing frame 27, and the lower end of the electric telescopic cylinder 29 is fixedly connected to the adjustment wheel limit seat 30.

[0039] Please see Figure 2-4An adjusting wheel first drive motor 31 is provided at the middle position above the adjusting wheel limit seat 30. An adjusting wheel drive rod groove 34 is provided inside the adjusting wheel limit seat 30. An adjusting wheel frame 35 is provided below the adjusting wheel limit seat 30. An adjusting wheel drive rod 32 is fixedly provided at the upper end of the adjusting wheel frame 35 and is rotatably connected to the adjusting wheel drive rod groove 34. The adjusting wheel drive rod 32 is drivenly connected to the output end of the adjusting wheel first drive motor 31. An adjusting wheel 37 is provided inside the adjusting wheel frame 35 below. An adjusting wheel second drive motor 36 is fixedly installed on one side of the adjusting wheel frame 35 and is drivenly connected to the adjusting wheel frame 35.

[0040] Please see Figure 5 A ball bearing plate groove 41 is provided inside the middle position of the clamping and positioning seat 20. A ball bearing plate 26 is movably arranged inside the ball bearing plate groove 41. A ball bearing 40 is rolled in a rectangular shape inside the upper end of the ball bearing plate 26. A ball bearing electric telescopic cylinder groove 38 is provided below the ball bearing plate groove 41. A ball bearing electric telescopic cylinder 39 is provided inside the ball bearing electric telescopic cylinder groove 38. The lower end of the ball bearing electric telescopic cylinder 39 is fixedly connected to the bottom end of the inner wall of the ball bearing electric telescopic cylinder groove 38, and the upper end of the ball bearing electric telescopic cylinder 39 is fixedly connected to the ball bearing plate 26. The ball bearing 40 is in contact with the lower surface of the plate 22.

[0041] A welding method for a high-precision welding device for large profiles includes the following steps:

[0042] Step 1: Place a sheet material 22 between the clamping positioning seat 20 and the clamping block 24. Extend the electric telescopic cylinder 39 of the ball bearing plate to make the balls 40 of the ball bearing plate 26 fit against the sheet material 22, while simultaneously separating the sheet material 22 from the clamping positioning seat 20. Then extend the electric telescopic cylinder 29 of the sheet material adjustment mechanism. The electric telescopic cylinder 29 of the sheet material adjustment mechanism pushes the adjusting wheel limit seat 30 to move downward. The adjusting wheel limit seat 30 then drives the adjusting wheel frame 35 and the adjusting wheel 37 to move downward, causing the adjusting wheel 37 to contact the upper surface of the sheet material 22. The surfaces are bonded together. The angle and position of the plate 22 are adjusted according to the welding position of the plate 22. The output end of the first drive motor 31 of the adjusting wheel is controlled to rotate to adjust the angle of the driving rod 32 of the adjusting wheel. The driving rod 32 of the adjusting wheel drives the adjusting wheel frame 35 to rotate, thereby adjusting the adjustment wheel 37. The adjusting wheel 37 drives the plate 22 to rotate under the rolling of the ball 40. Then the second drive motor 36 of the adjusting wheel is started. The second drive motor 36 of the adjusting wheel drives the adjusting wheel 37 to rotate. The adjusting wheel 37 drives the plate 22 to move horizontally.

[0043] Step 2: After adjustment, the electric telescopic cylinder 29 of the plate adjustment mechanism and the electric telescopic cylinder 39 of the ball plate are retracted. By controlling the opening and closing state of the electronic switch or relay, the current path is changed, thereby changing the current direction of the electromagnet 21. The change of current direction changes the electrodes of the electromagnet 21. The change of electrodes causes the electromagnet 21 and the magnet 25 to be magnetically attracted due to the attraction of opposite poles. The magnetic attraction causes the electromagnet 21 and the magnet 25 to move closer to each other, clamping the plate 22 between the electromagnet 21 and the magnet 25.

[0044] Step 3: Using the methods described in Step 1 and Step 2 above, adjust and clamp the other plate 22 between the electromagnet 21 and the magnet 25 of the adjacent profile clamping mechanism 2;

[0045] Step 4: The first rotary motor 15 of the profile clamping mechanism drives the clamping adjustment frame 16 to rotate in the front-to-back direction, and the second rotary motor 18 of the profile clamping mechanism drives the clamping positioning seat 20 to rotate in the horizontal direction, driving the profile clamping mechanism track wheel 19 of the profile clamping mechanism 2 to roll. The rolling profile clamping mechanism track wheel 19 rolls in the profile clamping mechanism slide rail 13, thereby causing the two driving profile clamping mechanisms 2 to move closer to each other, so that the two plates 22 move closer to each other until the welding distance is reached;

[0046] Step 5: Adjust the welding robot 1 to perform welding operations. Start the first rotating seat 4 to adjust the horizontal tilt angle between the welding robot fixed seat 3 and the first rotating seat 4. Adjust the vertical tilt angle between the first rotating seat 4 and the first support arm 6 through the third rotating motor 12 of the welding robot. Adjust the front-to-back angle between the connecting seat 7 and the second support arm 8 through the second rotating motor 9 of the welding robot. Adjust the horizontal tilt angle between the second support arm 8 and the welding torch seat 10 through the fourth rotating motor 43 of the welding robot. This allows for flexible adjustment of the welding torch 11. When the welding torch 11 is aligned with the welding area, the welding operation is performed.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-precision welding device for large profiles, comprising a welding robot (1), characterized in that: Two profile clamping mechanisms (2) are provided on one side of the welding robot (1). A profile clamping mechanism slide rail (13) is provided below the profile clamping mechanism (2). A profile clamping mechanism mounting base (14) is provided at one end of the profile clamping mechanism (2). A clamping adjustment frame (16) is rotatably provided at the end of the profile clamping mechanism mounting base (14) near the welding robot (1). A clamping positioning mechanism (17) is installed above one end of the clamping adjustment frame (16). A clamping positioning seat is provided at the lower end of the clamping positioning mechanism (17). 20), the upper end of the clamping and positioning mechanism (17) is provided with a magnetic locking mechanism (42), the inside of the clamping and positioning seat (20) is provided with six electromagnets (21) in a ring, the lower end of the magnetic locking mechanism (42) is provided with six clamping blocks (24) in a ring, and the clamping blocks (24) are located above the electromagnets (21). The inside of the clamping blocks (24) is provided with magnets (25), and the magnets (25) are correspondingly arranged with the electromagnets (21). A plate (22) is provided between the clamping blocks (24) and the clamping and positioning seat (20). The magnetic locking mechanism (42) is provided with a plate adjustment mechanism fixing frame (27) at the middle position. The plate adjustment mechanism fixing frame (27) is provided with a plate adjustment mechanism (28) inside. The plate adjustment mechanism fixing frame (27) and the clamping block (24) are fixedly connected by a connecting rod (23). The plate adjustment mechanism (28) includes an electric telescopic cylinder (29), an adjustment wheel limit seat (30), an adjustment wheel first drive motor (31), an adjustment wheel drive rod (32), a limit plate (33), an adjustment wheel drive rod groove (34), an adjustment wheel frame (35), an adjustment wheel second drive motor (36), and an adjustment wheel (37). The adjustment wheel limit seat (30) is located in the middle of the plate adjustment mechanism (28), and two electric telescopic cylinders (29) are symmetrically arranged between the adjustment wheel limit seat (30) and the inner wall of the plate adjustment mechanism fixing frame (27). The upper end of the electric telescopic cylinder (29) is fixedly connected to the inner wall of the plate adjustment mechanism fixing frame (27), and the lower end of the electric telescopic cylinder (29) is fixedly connected to the adjustment wheel limit seat (30). An adjustment wheel first drive motor (31) is provided at the middle position above the adjustment wheel limit seat (30). An adjustment wheel drive rod groove (34) is provided inside the adjustment wheel limit seat (30). An adjustment wheel frame (35) is provided below the adjustment wheel limit seat (30). An adjustment wheel drive rod (32) is fixedly provided at the upper end of the adjustment wheel frame (35), and the adjustment wheel drive rod (32) is rotatably connected to the adjustment wheel drive rod groove (34). The adjustment wheel drive rod (32) is driven to the output end of the adjustment wheel first drive motor (31). An adjustment wheel (37) is provided inside the lower part of the adjustment wheel frame (35). An adjustment wheel second drive motor (36) is fixedly installed on one side of the adjustment wheel frame (35). The output end of the adjustment wheel second drive motor (36) is driven to the adjustment wheel frame (35). The clamping positioning seat (20) has a ball bearing groove (41) in the middle position. A ball bearing plate (26) is movably arranged inside the ball bearing groove (41). A ball bearing (40) is rolled in a rectangular shape inside the upper end of the ball bearing plate (26). A ball bearing electric telescopic cylinder groove (38) is provided below the ball bearing groove (41). A ball bearing electric telescopic cylinder (39) is provided inside the ball bearing electric telescopic cylinder groove (38). The lower end of the ball bearing electric telescopic cylinder (39) is fixedly connected to the bottom end of the inner wall of the ball bearing electric telescopic cylinder groove (38). The upper end of the ball bearing electric telescopic cylinder (39) is fixedly connected to the ball bearing plate (26). The ball bearing (40) is in contact with the lower surface of the plate (22).

2. The high-precision welding device for large profiles according to claim 1, characterized in that: The welding robot (1) is provided with a welding robot fixed seat (3) at its lower end. A first rotating seat (4) is rotatably provided above the welding robot fixed seat (3). A welding robot first rotating motor (5) is provided above the first rotating seat (4). The welding robot first rotating motor (5) is fixedly connected to the first rotating seat (4). The output end of the welding robot first rotating motor (5) is connected to the welding robot fixed seat (3) in a transmission manner.

3. The high-precision welding device for large profiles according to claim 2, characterized in that: A first support arm (6) is provided above the first rotating seat (4), and the first support arm (6) is rotatably connected to the first rotating seat (4). A third rotary motor (12) of the welding robot is fixedly installed on one side of the lower end of the first support arm (6). The output end of the third rotary motor (12) of the welding robot is connected to the first rotating seat (4) in a transmission manner. A connecting seat (7) is fixedly installed on the upper end of the first support arm (6), and a second support arm (8) is provided on one side of the connecting seat (7).

4. The high-precision welding device for large profiles according to claim 3, characterized in that: The second rotary motor (9) of the welding robot is fixedly installed inside one side of the connecting seat (7). The output end of the second rotary motor (9) of the welding robot is connected to the second support arm (8) for transmission. The connecting seat (7) is rotatably connected to the second support arm (8). The upper end of the other side of the second support arm (8) is equipped with the fourth rotary motor (43) of the welding robot. The lower end of the other side of the second support arm (8) is equipped with the welding gun seat (10). The welding gun (11) is installed inside the lower end of the welding gun seat (10).

5. The high-precision welding device for large profiles according to claim 4, characterized in that: On the other side of the profile clamping mechanism mounting base (14), a first rotary motor (15) of the profile clamping mechanism is installed, and the output end of the first rotary motor (15) of the profile clamping mechanism is connected to the clamping adjustment frame (16) in a transmission connection. At the four corners of the lower end of the profile clamping mechanism mounting base (14), a profile clamping mechanism track wheel (19) is respectively provided, and the profile clamping mechanism track wheel (19) is connected to the profile clamping mechanism slide rail (13) in a rolling connection. At the lower middle position on one side of the clamping adjustment frame (16), a second rotary motor (18) of the profile clamping mechanism is provided, and the second rotary motor (18) of the profile clamping mechanism is fixedly connected to the clamping adjustment frame (16). The output end of the second rotary motor (18) of the profile clamping mechanism is connected to the clamping positioning mechanism (17) in a transmission connection.

6. A welding method based on the high-precision welding device for large profiles as described in claim 5, characterized in that, Includes the following steps: Step 1: Place a piece of sheet material (22) between the clamping positioning seat (20) and the clamping block (24). Extend the electric telescopic cylinder (39) of the ball bearing plate so that the balls (40) of the ball bearing plate (26) fit against the sheet material (22), while separating the sheet material (22) from the clamping positioning seat (20). Then extend the electric telescopic cylinder (29) of the sheet material adjustment mechanism. The electric telescopic cylinder (29) of the sheet material adjustment mechanism pushes the adjusting wheel limit seat (30) to move downward. The adjusting wheel limit seat (30) then drives the adjusting wheel frame (35) and the adjusting wheel (37) to move downward, causing the adjusting wheel (37) to contact the sheet material (22). The upper surfaces are attached together. The angle and position of the plate (22) are adjusted according to the welding position of the plate (22). The output end of the first drive motor (31) of the adjustment wheel is controlled to rotate to adjust the angle of the drive rod (32). The drive rod (32) of the adjustment wheel drives the adjustment wheel frame (35) to rotate, thereby adjusting the adjustment wheel (37). The adjustment wheel (37) drives the plate (22) to rotate under the rolling of the ball (40). Then the second drive motor (36) of the adjustment wheel is started. The second drive motor (36) of the adjustment wheel drives the adjustment wheel (37) to rotate. The adjustment wheel (37) drives the plate (22) to move horizontally. Step 2: After adjustment, retract the electric telescopic cylinder (29) of the plate adjustment mechanism and the electric telescopic cylinder (39) of the ball plate. By controlling the opening and closing state of the electronic switch or relay, change the current path, thereby changing the current direction of the electromagnet (21). By changing the current direction, change the electrode of the electromagnet (21). By changing the electrode, the electromagnet (21) and the magnet (25) are attracted due to opposite poles. By attracting the electromagnet (21) and the magnet (25) closer to each other, the plate (22) is clamped between the electromagnet (21) and the magnet (25). Step 3: Using the methods described in Step 1 and Step 2 above, adjust and clamp another plate (22) between the electromagnet (21) and the magnet (25) of the adjacent profile clamping mechanism (2); Step 4: The first rotary motor (15) of the profile clamping mechanism drives the clamping adjustment frame (16) to rotate in the front-to-back direction, and the second rotary motor (18) of the profile clamping mechanism drives the clamping positioning seat (20) to rotate in the horizontal direction, driving the profile clamping mechanism track wheel (19) of the profile clamping mechanism (2) to roll. The rolling profile clamping mechanism track wheel (19) rolls in the profile clamping mechanism slide rail (13), thereby causing the two driving profile clamping mechanisms (2) to move closer to each other, and allowing the two plates (22) to move closer to each other until the welding distance is reached; Step 5: Adjust the welding robot (1) to perform welding operations. Start the first rotating seat (4) to adjust the horizontal tilt angle between the welding robot fixed seat (3) and the first rotating seat (4). Adjust the vertical tilt angle between the first rotating seat (4) and the first support arm (6) through the third rotating motor (12) of the welding robot. Adjust the front-to-back angle between the connecting seat (7) and the second support arm (8) through the second rotating motor (9) of the welding robot. Adjust the horizontal tilt angle between the second support arm (8) and the welding gun seat (10) through the fourth rotating motor (43) of the welding robot. In this way, the welding gun (11) can be flexibly adjusted. When the welding gun (11) is aligned with the welding area, the welding operation is performed.

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