Automatic plasma welding device for steel structure and method thereof

Abstract

The application relates to the technical field of plasma welding, in particular to a steel structure automatic plasma welding device and a method thereof. The device comprises a workbench, a conveying belt, a discharging sleeve and a welding gun. One end of the workbench is provided with a general controller. The top end of the workbench is provided with the conveying belt. The middle part of the workbench is provided with a clamping mechanism for clamping a pair of objects. The bottom end of the clamping mechanism is provided with a leveling mechanism for automatic leveling. The top end of the workbench is provided with a welding mechanism for automatic welding. The device can not only automatically weld, but also improve the welding quality and work efficiency, reduce the work intensity and work load of users, and does not need to be manually held for welding, so that the users can avoid long-time contact with the welding position, improve the safety of the users and avoid injuries during work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plasma welding, in particular to a steel structure automatic plasma welding device and method thereof. BACKGROUND

[0002] Plasma welding is a welding method using plasma arc as a heat source to melt the joint of two metals, including alternating current plasma arc welding, micro-beam plasma arc welding, reverse polarity plasma arc welding, pulse plasma arc welding, and gas tungsten arc welding, etc. The advantages are that the workpiece can be welded without opening a groove or leaving a gap, single-sided welding with double-sided forming, stable arc, concentrated heat, small heat-affected zone, small deformation, and high productivity within a certain thickness range.

[0003] Currently, some existing plasma welding devices are manually operated for welding. When batch welding, the workload is very large, which will cause the user's workload to increase dramatically, and long time will lead to a decrease in welding quality, and also reduce the user's work efficiency. SUMMARY

[0004] The purpose of the present application is to provide a steel structure automatic plasma welding device and method thereof to solve the problem of the current existing plasma welding device, which is manually operated for welding. When batch welding, the workload is very large, which will cause the user's workload to increase dramatically, and long time will lead to a decrease in welding quality, and also reduce the user's work efficiency. The present application can not only automatically weld, but also improve the welding quality and work efficiency, reduce the user's work intensity and workload, and does not require the user to hold the welding, thereby avoiding the user's long-term contact with the welding, improving the user's safety, and avoiding the user's injury during work.

[0005] To achieve the above purpose, the present application provides the following technical solution: a steel structure automatic plasma welding device and method thereof, the device comprising a workbench, a conveyor belt, a feeding sleeve, and a welding gun. One end of the workbench is provided with a general controller, the top end of the workbench is provided with a conveyor belt, the middle part of the workbench is provided with a clamping mechanism for clamping the center, the bottom end of the clamping mechanism is provided with a leveling mechanism for automatic leveling, and the top end of the workbench is provided with a welding mechanism for automatic welding.

[0006] The clamping mechanism includes an adjusting seat, which is located in the middle of the worktable. The top of the adjusting seat is symmetrically and fixedly connected to clamping sleeves. Each clamping sleeve has an armor plate slidably connected to one end of each other. A welding plate is placed between the armor plates and fits against them. A first motor is located in the middle of one set of clamping sleeves, and a fourth electric push rod is located in the middle of the other set of clamping sleeves and fixedly connected to one end of the armor plate. The output end of the first motor is fixedly connected to a first threaded rod that is connected to the inner wall of the clamping sleeve through a bearing. One end of the first threaded rod is threadedly connected to a threaded sleeve that is fixedly connected to the armor plate, which facilitates the clamping and centering of the welding plate.

[0007] Preferably, the adjusting seat is located in the middle of the conveyor belt, all the armor plates are L-shaped, one end of each of the clamping sleeves is provided with an L-shaped opening, one end of each of the L-shaped openings of the armor plates is provided with a distance sensor, the control terminal of the main controller is electrically connected to an external power source, and the control terminals of the conveyor belt, the first motor, the fourth electric push rod and the distance sensor are all electrically connected to the main controller, which facilitates the movement of the welding plate.

[0008] Preferably, the leveling mechanism includes a central chamber, which is fixedly connected to the center of the workbench. An adjusting seat is located inside the central chamber. An adjusting plate is connected to the bottom of the adjusting seat via a pivot. One end of the adjusting plate is connected to a receiving plate via a pivot. The connection between the adjusting plate and the adjusting seat forms a 90-degree angle with the connection between the adjusting plate and the receiving plate. A first electric actuator is provided on the inner wall of the bottom of the central chamber, and the output end of the first electric actuator is fixedly connected to the bottom of the receiving plate. Perilla guide telescopic rods are evenly distributed on the inner wall of the bottom of the central chamber, and the top ends of all guide telescopic rods are fixedly connected to the bottom of the receiving plate. A level is provided on the top of each clamping sleeve. A second electric actuator is provided on one end of the receiving plate, and the top end of the second electric actuator is in contact with the bottom of the adjusting plate. A third electric actuator is provided on the top of the adjusting plate, and the top end of the third electric actuator is in contact with the bottom of the adjusting seat. This mechanism enables automatic leveling, preventing welding tilt and improving welding quality.

[0009] Preferably, the two sets of levels are used to detect the top level of the adjusting seat and the welding plate, respectively. The control ends of the first electric actuator, the second electric actuator and the third electric actuator are all electrically connected to the main controller, which facilitates the automatic operation of the device and improves the welding quality.

[0010] Preferably, the welding mechanism includes a fixed plate, a fixed plate is fixedly connected to one side of the middle of the workbench, a movable stage is slidably connected to one side of the fixed plate, a power mechanism is provided between the fixed plate and the movable stage, wire harnesses are uniformly fixedly connected to one side of the movable stage, a feeding sleeve is uniformly fixedly connected to one end of the movable stage, welding rods are uniformly arranged inside the feeding sleeve, and the bottom ends of the welding rods are all in contact with the top end of the welding plate, a feeding block is fixedly connected to the bottom end of the feeding sleeve, a material roller is connected inside the feeding block through a rotating shaft, a third motor is provided at one end of the feeding block, and the output end of the third motor is fixedly connected to one end of the material roller, the middle of the material roller is in contact with the welding rod, and three sets of transmission chambers are uniformly opened inside the movable stage. The bottom of each moving platform is symmetrically provided with through holes connected to the transmission chamber. Each end of the transmission chamber is provided with a first gear connected to the unloading sleeve via bearings. The middle of each transmission chamber is connected to two sets of second gears via a rotating shaft, and the second gears mesh with each other. Each of the two sets of first gears meshes with the second gears. The inner wall of each transmission chamber is provided with a fourth motor, and the output end of each fourth motor is fixedly connected to one end of each second gear. The bottom of the moving platform is evenly provided with connecting and fixing rods that are rotatably connected to the through holes. The top end of each connecting and fixing rod is fixedly connected to the surface of the first gear. The bottom end of each connecting and fixing rod is fixedly connected to a welding gun, and the bottom end of each welding gun points to the connection point of the welding plate and the welding rod, which can automatically perform feeding and welding work.

[0011] Preferably, the power mechanism includes guide rods, one end of the movable platform is symmetrically and fixedly connected to the guide rods, and both ends of the guide rods are fixedly connected to the inner wall of the fixed plate. One end of the movable platform is threadedly connected to a second threaded rod, and the top end of the second threaded rod is connected to the fixed plate through a bearing. A second motor is provided on the inner wall of the bottom end of the fixed plate, and the output end of the second motor is fixedly connected to the bottom end of the second threaded rod. The control end of the second motor is electrically connected to the main controller, which can control the rising and falling of the movable platform, the unloading sleeve, the welding rod, and the welding gun.

[0012] Preferably, one end of each welding torch is connected to the output end of the feeding sleeve via an electric wire, and one end of each welding torch is connected to a gas cylinder via a flexible hose. The electric wire and the flexible hose are fixed and limited by a cable tie to facilitate welding operations of the device.

[0013] Preferably, the control terminals of the feeding sleeve, the third motor, and the fourth motor are all electrically connected to the main controller to facilitate the operation of the device.

[0014] The operating method of this device is as follows:

[0015] Step 1: Set the dimensions and control the device to work automatically through the main controller, so that the bottom inner wall of the armor plate is lower than the surface of the conveyor belt. Then, adjust the distance between the two armor plates according to the size of the welding plate. After the user inputs the dimensions on the main controller, the output end of the first motor moves the armor plate through the first threaded rod and threaded sleeve.

[0016] Step 2: Clamping. The conveyor belt can smoothly transport the welding plate. When one end of the welding plate is in contact with one end of the armor plate, the first electric push rod will move the clamping sleeve and the armor plate upward, so that the bottom end of the welding plate is in contact with the inner wall of the armor plate. At the same time, the output end of the fourth electric push rod will extend, so that the armor plate can clamp the welding plate.

[0017] Step 3: Leveling. Two sets of levels are used to check whether the welding plate is in a horizontal position. If the welding plate is not in a horizontal position, the second and third electric actuators can adaptively adjust the horizontal angle of the welding plate to make the welding plate in a horizontal position.

[0018] Step 4: Material feeding and bonding. The second motor moves the moving table, feeding sleeve and welding rod downward through the second threaded rod. The material roller and the third motor can feed and fix the welding rod, so that the bottom end of the welding rod is in contact with the welding plate.

[0019] Step 5: Welding. The welding torch can weld and fix the welding rod and the welding plate. At the same time, the output of the fourth motor drives the two sets of first gears to rotate through two sets of second gears. The first gear drives the welding torch to rotate through the connecting fixing rod. When the welding torch rotates one revolution, the welding is completed.

[0020] Step Six: Reset. The fourth motor, the second gear, and the first gear cause the connecting fixing rod and the welding gun to rotate in the opposite direction for one revolution to reset, so as to prepare for the next welding. After welding is completed, the second motor and the second threaded rod cause the moving table and the unloading sleeve to move upward. At the same time, the third motor and the first electric push rod work. The third motor and the material roller can move the welding rod out of the unloading sleeve so that the next set of welding rods can move downward.

[0021] Step 7: Material Change. The first electric actuator moves the adjusting seat and welding plate downwards, and the fourth electric actuator removes the armor plate from fixing the welding plate. When the bottom of the welding plate is in contact with the surface of the conveyor belt, the adjusting seat and clamping sleeve continue to move downwards until the top of the armor plate is lower than the welding plate. The conveyor belt moves the welded welding plate and welding rod. When they are no longer between the armor plates, the first electric actuator moves the clamping sleeve and armor plate upwards, so that the inner wall of the bottom of the armor plate is lower than the surface of the conveyor belt again, so as to facilitate the limiting and tightening of the next set of welding plates.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The user controls the device for fully automatic operation via the main controller. At this point, the inner wall of the bottom edge of the armor plate is slightly lower than the surface of the conveyor belt. Then, the distance between the two armor plates is adjusted according to the size of the welding plate. After the user inputs the dimensions into the main controller, the output of the first motor moves the armor plate via the first threaded rod and threaded sleeve, positioning it correctly. The conveyor belt smoothly transports the welding plate. When one end of the welding plate is in contact with one end of the armor plate, the first electric push rod moves the receiving plate, adjusting plate, adjusting seat, clamping sleeve, and armor plate upwards. Four sets of guide telescopic rods ensure smooth upward movement, bringing the bottom edge of the welding plate into contact with the inner wall of the armor plate. Simultaneously, the output of the fourth electric push rod extends, allowing... The armor plate can tighten the welding plate, ensuring it fits snugly against the armor plate. Two sets of levels then check if the welding plate is level. If not, the second and third electric actuators adaptively adjust the plate's angle to ensure it is level, guaranteeing subsequent welding quality. Once the welding plate reaches the appropriate height, the second motor, via the second threaded rod, lowers the moving table, unloading sleeve, and welding rod. The material roller and third motor unload and fix the welding rod. After the bottom of the welding rod is in contact with the welding plate, the unloading sleeve and welding gun begin operation, welding the welding rod and plate together. Simultaneously, the fourth motor... The output end drives two sets of first gears to rotate via two sets of second gears. The first gears drive the welding torch to rotate via a connecting rod. After the welding torch rotates one revolution, the welding is completed. The fourth motor, second gears, and first gears then cause the connecting rod and welding torch to rotate one revolution in the opposite direction to reset, facilitating the next welding operation. After welding, the second motor and second threaded rod move the moving table and unloading sleeve upwards. Simultaneously, the third motor and first electric push rod operate, using the third motor and material rollers to move the welding rod out of the unloading sleeve, allowing the next set of welding rods to move downwards. The first electric push rod moves the adjusting seat and welding plate downwards, while the output end of the fourth electric push rod shortens, removing the armor plate from the welding plate. When the bottom end of the welding plate is in contact with the conveyor belt... After the surfaces are bonded, the first electric actuator continues to move the adjusting seat and clamping sleeve downwards until the top of the armor plate is lower than the welding plate. At this point, the conveyor belt moves the welded plate and welding rod. Once they are no longer between the armor plates, the first electric actuator moves the clamping sleeve and armor plate upwards, so that the inner wall of the bottom of the armor plate is slightly lower than the surface of the conveyor belt again, which facilitates the limiting and tightening of the next set of welding plates. This device can not only perform welding fully automatically, but also improve welding quality and work efficiency, and reduce the user's workload and intensity. At the same time, it eliminates the need for the user to hold the welding hand, thus avoiding prolonged contact with the welding area and improving user safety, preventing injury during work. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 This is a cross-sectional perspective view of the present invention;

[0026] Figure 3 This is a three-dimensional schematic diagram of the clamping mechanism and the leveling mechanism in this invention;

[0027] Figure 4 This is a three-dimensional cross-sectional view of the clamping mechanism and the leveling mechanism in this invention;

[0028] Figure 5 This is a three-dimensional cross-sectional view of the sleeve and armor plate in this invention;

[0029] Figure 6 This is a three-dimensional schematic diagram of the welding mechanism in this invention;

[0030] Figure 7 This is a three-dimensional cross-sectional view of the first motor and the feeding block in this invention;

[0031] Figure 8 This is a three-dimensional schematic diagram of the first gear and the fourth motor in this invention;

[0032] Figure 9 This is a three-dimensional schematic diagram of the feeding block and the perforation in this invention.

[0033] In the diagram: 1. Workbench; 2. Main controller; 3. Conveyor belt; 4. Central bin; 5. Receiving plate; 6. First electric actuator; 7. Guide telescopic rod; 8. Adjusting plate; 9. Adjusting seat; 10. Mounting sleeve; 11. Armor plate; 12. Level; 13. Welding plate; 14. Second electric actuator; 15. Third electric actuator; 16. First motor; 17. First threaded rod; 18. Threaded sleeve; 19. Fourth electric actuator; 20. Fixing plate; 21. Moving table; 22. Guide rod; 23. Second motor; 24. Second threaded rod; 25. Wire catcher; 26. Unloading sleeve; 27. Welding rod; 28. Unloading block; 29. ​​Material roller; 30. Third motor; 31. Transmission bin; 32. Perforation; 33. First gear; 34. Second gear; 35. Fourth motor; 36. Connecting fixing rod; 37. Welding torch. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-9One embodiment provided by the present invention:

[0036] An automatic plasma welding device and method for steel structures are disclosed. The device includes a worktable 1, a conveyor belt 3, a feeding sleeve 26, and a welding torch 37. A main controller 2 is provided at one end of the worktable 1, a conveyor belt 3 is provided at the top of the worktable 1, a clamping mechanism for clamping and centering is provided in the middle of the worktable 1, a leveling mechanism for automatic leveling is provided at the bottom of the clamping mechanism, and a welding mechanism for automatic welding is provided at the top of the worktable 1.

[0037] The clamping mechanism includes an adjusting seat 9. The adjusting seat 9 is located in the middle of the worktable 1. Clamping sleeves 10 are symmetrically fixedly connected to the top of the adjusting seat 9. Armor plates 11 are slidably connected to the adjacent ends of the clamping sleeves 10. Welding plates 13 are placed between the armor plates 11 and fit against them. A first motor 16 is located in the middle of one clamping sleeve 10, and a fourth electric push rod 19 is fixedly connected to one end of the armor plate 11 in the middle of the other clamping sleeve 10. The output end of the first motor 16 is fixedly connected to a first threaded rod 17, which is connected to the inner wall of the clamping sleeve 10 via a bearing. One end of the first threaded rod 17 is threadedly connected to a threaded sleeve 18, which is fixedly connected to the armor plate 11. The user controls the device to operate fully automatically via the main controller 2. At this time, the bottom inner wall of the armor plate 11 is slightly lower than the surface of the conveyor belt 3 to facilitate the movement of the welding plate 13 and subsequent clamping work. Then, the distance between the two clamping sleeves 11 is adjusted according to the size of the welding plate 13. At this time, all armor plates 11 are located inside the mounting sleeve 10, and the distance between the armor plates 11 is at its maximum value. After the user inputs the dimensions on the main controller 2, the main controller 2 controls the first motor 16 and the fourth electric push rod 19 to work. The output end of the first motor 16 drives the first threaded rod 17 to rotate. Through the first threaded rod 17 and the threaded sleeve 18, one set of armor plates 11 can slide inside the mounting sleeve 10. The first threaded rod 17 and the threaded sleeve 18 make the armor plates 11 move. Half of the difference between the maximum value between the armor plates 11 and the width of the welding plate 13 is the distance that one side of the armor plate 11 moves. The distance sensor controls the distance that the two sets of armor plates 11 move, so that the distance between the armor plates 11 is slightly greater than the width of the welding plate 13. The armor plates 11 controlled by the first motor 16, the first threaded rod 17 and the threaded sleeve 18 are in a fixed position, which is convenient for clamping and centering the welding plate 13.

[0038] Please see Figures 2-4In this embodiment, the leveling mechanism includes a central chamber 4. The central chamber 4 is fixedly connected to the middle of the workbench 1. An adjusting seat 9 is located inside the central chamber 4. The bottom end of the adjusting seat 9 is connected to an adjusting plate 8 via a rotating shaft. One end of the adjusting plate 8 is connected to a receiving plate 5 via a rotating shaft. The connection between the adjusting plate 8 and the adjusting seat 9 forms a 90-degree angle with the connection between the adjusting plate 8 and the receiving plate 5. A first electric push rod 6 is provided on the inner wall of the bottom end of the central chamber 4, and the output end of the first electric push rod 6 is fixedly connected to the bottom end of the receiving plate 5. The inner wall is uniformly provided with perilla guide telescopic rods 7, and the top of each guide telescopic rod 7 is fixedly connected to the bottom of the receiving plate 5. A level 12 is provided at the top of each clamping sleeve 10. A second electric push rod 14 is provided at one end of the receiving plate 5, and the top of the second electric push rod 14 is in contact with the bottom of the adjusting plate 8. A third electric push rod 15 is provided at the top of the adjusting plate 8, and the top of the third electric push rod 15 is in contact with the bottom of the adjusting seat 9. When one end of the welding plate 13 is in contact with one end of the armor plate 11, the third electric push rod 15... The output end of an electric actuator 6 drives the receiving plate 5, adjusting plate 8, adjusting seat 9, clamping sleeve 10, armor plate 11, and welding plate 13 to move upward. Four sets of guide telescopic rods 7 ensure smooth upward movement. At this time, the bottom end of the welding plate 13 is in contact with the inner wall of the armor plate 11. At the same time, the output end of the fourth electric actuator 19 extends, which allows the armor plate 11 to tighten the welding plate 13. The welding plate 13 is tightly in contact with the armor plate 11. Then, two sets of levels 12 detect whether the welding plate 13 is in a horizontal position. If the welding plate 13 is not in a horizontal position, the level 12 detects the tilt direction of the adjusting seat 9, clamping sleeve 10, and welding plate 13. The second electric actuator 14 and the third electric actuator 15 can control the tilt position of the adjusting plate 8 and the adjusting seat 9 respectively, thereby adaptively adjusting the horizontal angle of the welding plate 13 to ensure that the welding plate 13 is in a horizontal position, thus ensuring the subsequent welding quality. It can automatically perform leveling work to avoid welding tilt and improve welding quality.

[0039] Please see Figures 2-9In this embodiment, the welding mechanism includes a fixed plate 20. The fixed plate 20 is fixedly connected to one side of the middle of the workbench 1. A movable stage 21 is slidably connected to one side of the fixed plate 20. A power mechanism is provided between the fixed plate 20 and the movable stage 21. Wire catchers 25 are uniformly fixedly connected to one side of the movable stage 21. A feeding sleeve 26 is uniformly fixedly connected to one end of the movable stage 21. Welding rods 27 are uniformly arranged inside the feeding sleeve 26, and the bottom ends of the welding rods 27 are all in contact with the top end of the welding plate 13. A feeding block 28 is fixedly connected to the bottom end of the feeding sleeve 26. A material roller 29 is connected to the inside of the feeding block 28 through a rotating shaft. Each feeding block 28 has a third motor 30 at one end, and the output end of each third motor 30 is fixedly connected to one end of each feeding roller 29. The middle of each feeding roller 29 is in contact with the welding rod 27. The moving table 21 has three sets of transmission chambers 31 evenly distributed inside. The bottom of each moving table 21 has symmetrical through holes 32 connected to the transmission chambers 31. Each end of each transmission chamber 31 is provided with a first gear 33 connected to the feeding sleeve 26 through bearings. The middle of each transmission chamber 31 is connected to two sets of second gears 34 through a rotating shaft, and the second gears 34 mesh with each other. Each of the two sets of first gears 33 is respectively connected to the second gears. The gears 34 mesh with each other. A fourth motor 35 is installed on the inner wall of the transmission chamber 31, and the output ends of each fourth motor 35 are fixedly connected to one end of the second gear 34. Connecting rods 36, rotatably connected to the through holes 32, are evenly distributed at the bottom of the moving table 21. The top ends of each connecting rod 36 are fixedly connected to the surface of the first gear 33, and welding torches 37 are fixedly connected to the bottom ends of each connecting rod 36. The bottom ends of each welding torch 37 point towards the connection point between the welding plate 13 and the welding rod 27. The third motor 30 drives the material roller 29 to rotate, thereby feeding and fixing the welding rod 27. After the bottom ends of the welding rods are in contact with the welding plate 13, the feeding sleeve 26 and the welding gun 37 start to work. The welding gun 37 can weld and fix the welding rod 27 and the welding plate 13. At the same time, the output end of the fourth motor 35 drives the two sets of first gears 33 to rotate through the two sets of second gears 34. The first gears 33 drive the welding gun 37 to rotate through the connecting fixing rod 36. When the welding gun 37 rotates one revolution, the welding is completed. The fourth motor 35, the second gears 34 and the first gears 33 cause the connecting fixing rod 36 and the welding gun 37 to rotate one revolution in the opposite direction to reset, so as to facilitate the next welding. The feeding and welding work can be performed automatically.

[0040] Please see Figure 6In this embodiment, the power mechanism includes a guide rod 22. One end of the moving platform 21 is symmetrically and fixedly connected to the guide rod 22, and both ends of the guide rod 22 are fixedly connected to the inner wall of the fixed plate 20. One end of the moving platform 21 is connected to a second threaded rod 24 by a thread, and the top end of the second threaded rod 24 is connected to the fixed plate 20 by a bearing. The inner wall of the bottom end of the fixed plate 20 is provided with a second motor 23, and the output end of the second motor 23 is fixedly connected to the bottom end of the second threaded rod 24. The control end of the second motor 23 is electrically connected to the main controller 2. When the welding plate 13 rises to a suitable height, the output end of the second motor 23 drives the second threaded rod 24 to rotate. The second threaded rod 24 causes the moving platform 21, the unloading sleeve 26 and the welding rod 27 to move down or up, and the rising and falling of the moving platform 21, the unloading sleeve 26, the welding rod 27 and the welding gun 37 can be controlled.

[0041] It should be noted that the adjusting seat 9 is located in the middle of the conveyor belt 3, the armor plates 11 are all L-shaped, and one end of the clamping sleeve 10 is opened with an L-shaped opening. A distance sensor is installed at one end of each L-shaped opening of the armor plate 11. The control terminal of the main controller 2 is electrically connected to an external power source. The control terminals of the conveyor belt 3, the first motor 16, the fourth electric push rod 19, and the distance sensor are all electrically connected to the main controller 2 to facilitate the movement of the welding plate 13. Two sets of levels 12 are used to detect the top level of the adjusting seat 9 and the welding plate 13, respectively. The first electric push rod 6 and the second electric push rod 19... The control ends of rod 14 and the third electric actuator 15 are electrically connected to the main controller 2, which facilitates the automatic operation of the device and improves the welding quality. One end of each welding torch 37 is connected to the output end of the unloading sleeve 26 via an electric wire, and one end of each welding torch 37 is connected to a gas cylinder via a flexible hose to provide protective gas. The electric wires and flexible hoses are fixed and limited by the cable tie 25 to facilitate the welding operation of the device. The control ends of the unloading sleeve 26, the third motor 30 and the fourth motor 35 are all electrically connected to the main controller 2 to facilitate the operation of the device.

[0042] The device operates as follows:

[0043] Step 1: Set the dimensions. Control the device to work automatically through the main controller 2, so that the bottom inner wall of the armor plate 11 is lower than the surface of the conveyor belt 3. Then, adjust the distance between the two armor plates 11 according to the size of the welding plate 13. After the user inputs the dimensions on the main controller 2, the output end of the first motor 16 moves the armor plate 11 through the first threaded rod 17 and the threaded sleeve 18.

[0044] Step 2: Clamping. The welding plate 13 is smoothly conveyed by the conveyor belt 3. When one end of the welding plate 13 is in contact with one end of the armor plate 11, the first electric push rod 6 causes the clamping sleeve 10 and the armor plate 11 to move upward, so that the bottom end of the welding plate 13 is in contact with the inner wall of the armor plate 11. At the same time, the output end of the fourth electric push rod 19 extends, so that the armor plate 11 can clamp the welding plate 13.

[0045] Step 3: Leveling. Two sets of levels 12 are used to check whether the welding plate 13 is in a horizontal position. If the welding plate 13 is not in a horizontal position, the second electric actuator 14 and the third electric actuator 15 can adaptively adjust the horizontal angle of the welding plate 13 so that the welding plate 13 is in a horizontal position.

[0046] Step 4: Material feeding and bonding. The second motor 23 moves the moving table 21, the feeding sleeve 26 and the welding rod 27 downward through the second threaded rod 24. The material roller 29 and the third motor 30 can feed and fix the welding rod 27, so that the bottom end of the welding rod 27 is in contact with the welding plate 13.

[0047] Step 5: Welding. The welding torch 37 can weld and fix the welding rod 27 and the welding plate 13. At the same time, the output end of the fourth motor 35 drives the two sets of first gears 33 to rotate through the two sets of second gears 34. The first gears 33 drive the welding torch 37 to rotate through the connecting fixing rod 36. When the welding torch 37 rotates one revolution, the welding is completed.

[0048] Step Six: Reset. The fourth motor 35, the second gear 34, and the first gear 33 reset the connecting fixing rod 36 and the welding gun 37 by rotating them in the opposite direction one revolution to facilitate the next welding. After welding is completed, the second motor 23 and the second threaded rod 24 move the moving table 21 and the unloading sleeve 26 upward. At the same time, the third motor 30 and the first electric push rod 6 work. The third motor 30 and the material roller 29 enable the welding rod 27 to move out of the unloading sleeve 26 so that the next set of welding rods 27 can move downward.

[0049] Step 7: Material change. The first electric push rod 6 moves the adjusting seat 9 and the welding plate 13 downward. The fourth electric push rod 19 removes the armor plate 11 from fixing the welding plate 13. After the bottom end of the welding plate 13 is in contact with the surface of the conveyor belt 3, the adjusting seat 9 and the clamping sleeve 10 continue to move downward until the top end of the armor plate 11 is lower than the welding plate 13. The conveyor belt 3 moves the welded welding plate 13 and the welding rod 27. When they are no longer between the armor plates 11, the first electric push rod 6 moves the clamping sleeve 10 and the armor plate 11 upward, so that the inner wall of the bottom end of the armor plate 11 is lower than the surface of the conveyor belt 3 again, so as to limit and tighten the next set of welding plates 13.

[0050] The user controls the device to operate fully automatically via the main controller 2. At this time, the bottom inner wall of the armor plate 11 is slightly lower than the surface of the conveyor belt 3 to facilitate the movement of the welding plate 13 and subsequent clamping. Then, the distance between the two assembled armor plates 11 is adjusted according to the size of the welding plate 13. At this point, all armor plates 11 are located inside the clamping sleeve 10, and the distance between the armor plates 11 is at its maximum. After the user inputs the dimensions into the main controller 2, the main controller 2 controls the first motor 16 and the fourth electric push rod 19 to operate. The output end of the first motor 16 drives the first threaded rod 17 to rotate. Through the first threaded rod 17 and the threaded sleeve 18, one assembled armor plate 11 can slide inside the assembly clamping sleeve 10. The threaded sleeve 18 causes the armor plate 11 to move. The maximum distance between the armor plates 11 is half the difference between the width of the welding plate 13 and the maximum distance between them. This distance is the distance that one side of the armor plate 11 moves. The distance between the two armor plates 11 is controlled by a distance sensor, so that the distance between the armor plates 11 is slightly greater than the width of the welding plate 13. The armor plate 11, controlled by the first motor 16, the first threaded rod 17, and the threaded sleeve 18, is in a fixed position. The working conveyor belt 3 can smoothly transport the welding plate 13. When one end of the welding plate 13 is in contact with one end of the armor plate 11, the output end of the first electric push rod 6 drives the receiving plate 5, adjusting plate 8, adjusting seat 9, clamping sleeve 10, armor plate 11, and welding plate 13 to move upward. The four sets of guide telescopic rods 7 can ensure that... The welding plate 13 moves smoothly upwards until its bottom end is flush with the inner wall of the armor plate 11. Simultaneously, the output end of the fourth electric actuator 19 extends, allowing the armor plate 11 to tighten around the welding plate 13. The welding plate 13 is then tightly fitted to the armor plate 11. Two sets of levels 12 are used to check if the welding plate 13 is level. If it is not, the level 12 detects the tilt direction of the adjusting seat 9, the clamping sleeve 10, and the welding plate 13. The second and third electric actuators 14 and 15 control the tilt positions of the adjusting plate 8 and the adjusting seat 9, respectively, thus adaptively adjusting the horizontal angle of the welding plate 13 to ensure it is level and guarantee the subsequent welding quality. Once the welding plate 13 rises to a suitable height, the output of the second motor 23 drives the second threaded rod 24 to rotate. The second threaded rod 24 causes the moving table 21, the unloading sleeve 26, and the welding rod 27 to move downwards. The third motor 30 drives the material roller 29 to rotate, thus unloading and fixing the welding rod 27. When the bottom of the welding rod 27 is in contact with the welding plate 13, the unloading sleeve 26 and the welding gun 37 begin to work. The welding gun 37 welds and fixes the welding rod 27 to the welding plate 13. Simultaneously, the output of the fourth motor 35 drives two sets of first gears 33 to rotate via two sets of second gears 34. The first gears 33 drive the welding gun 37 to rotate via the connecting fixing rod 36. After the welding gun 37 rotates one revolution, the welding is complete.The fourth motor 35, the second gear 34, and the first gear 33 cause the connecting fixing rod 36 and the welding gun 37 to rotate in the opposite direction for one revolution to reset, facilitating the next welding. After welding is completed, the second motor 23 and the second threaded rod 24 cause the moving table 21 and the unloading sleeve 26 to move upward. At the same time, the third motor 30 and the first electric push rod 6 work, and the third motor 30 and the material roller 29 enable the welding rod 27 to move out of the unloading sleeve 26, so that the next set of welding rods 27 can move downward. The first electric push rod 6 enables the adjusting seat 9 and the welding plate 13 to move downward. At the same time, the output end of the fourth electric push rod 19 shortens, so that the armor plate 11 no longer fixes the welding plate 13. When the bottom end of the welding plate 13 is in contact with the surface of the conveyor belt 3, the first electric push rod 6 continues to drive. The adjusting seat 9 and the clamping sleeve 10 move downwards until the top of the armor plate 11 is lower than the welding plate 13. At this time, the conveyor belt 3 operates, causing the welded welding plate 13 and welding rod 27 to move. Once they are no longer between the armor plates 11, the first electric push rod 6 causes the clamping sleeve 10 and the armor plate 11 to move upwards, so that the inner wall of the bottom end of the armor plate 11 is again slightly lower than the surface of the conveyor belt 3. This facilitates the limiting and tightening of the next set of welding plates 13. This device not only enables fully automatic welding but also improves welding quality and work efficiency, while reducing the user's workload and intensity. Furthermore, it eliminates the need for the user to hold the welding machine, thus avoiding prolonged contact with the welding area and improving user safety by preventing injury during operation.

[0051] 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. An automatic plasma welding device for steel structures, comprising a worktable (1), a conveyor belt (3), a feeding sleeve (26), and a welding torch (37), characterized in that, A master controller (2) is provided at one end of the workbench (1), a conveyor belt (3) is provided at the top of the workbench (1), a clamping mechanism for clamping and centering is provided in the middle of the workbench (1), a leveling mechanism for automatic leveling is provided at the bottom of the clamping mechanism, and a welding mechanism for automatic welding is provided at the top of the workbench (1). The clamping mechanism includes an adjusting seat (9), an adjusting seat (9) is provided in the middle of the worktable (1), a clamping sleeve (10) is symmetrically fixedly connected to the top of the adjusting seat (9), an armor plate (11) is slidably connected to the end of each clamping sleeve (10) that is close to each other, a welding plate (13) is provided between the armor plates (11) and fits therewith, a first motor (16) is provided in the middle of one set of clamping sleeves (10), a fourth electric push rod (19) is fixedly connected to one end of the armor plate (11) in the middle of another set of clamping sleeves (10), the output end of the first motor (16) is fixedly connected to a first threaded rod (17) that is connected to the inner wall of the clamping sleeve (10) through a bearing, and one end of the first threaded rod (17) is threadedly connected to a threaded sleeve (18) that is fixedly connected to the armor plate (11). The welding mechanism includes a fixed plate (20), which is fixedly connected to one side of the middle of the workbench (1). A movable stage (21) is slidably connected to one side of the fixed plate (20). A power mechanism is provided between the fixed plate (20) and the movable stage (21). A wire harness (25) is uniformly fixedly connected to one side of the movable stage (21). A feeding sleeve (26) is uniformly fixedly connected to one end of the movable stage (21). Welding rods (27) are uniformly arranged inside the feeding sleeve (26). The bottom ends of the rods (27) are all in contact with the top end of the welding plate (13). The bottom ends of the feeding sleeves (26) are all fixedly connected to the feeding blocks (28). The inside of the feeding blocks (28) is connected to the material rollers (29) through the rotating shaft. A third motor (30) is provided at one end of each feeding block (28), and the output end of each third motor (30) is fixedly connected to one end of each material roller (29). The middle part of each material roller (29) is in contact with the welding rod (27). The inside of the moving table (21) is evenly provided with three The transmission chamber (31) has symmetrical through holes (32) at the bottom of the moving platform (21) for connecting with the transmission chamber (31). Both ends of the transmission chamber (31) are provided with first gears (33) connected to the unloading sleeve (26) via bearings. The middle of the transmission chamber (31) is connected to two sets of second gears (34) via rotating shafts, and the second gears (34) mesh with each other. Both sets of first gears (33) mesh with the second gears (34). The inner wall of the transmission chamber (31) is provided with… There is a fourth motor (35), and the output end of the fourth motor (35) is fixedly connected to one end of the second gear (34). The bottom end of the moving platform (21) is uniformly provided with connecting fixing rods (36) that are rotatably connected to the through hole (32). The top end of the connecting fixing rods (36) is fixedly connected to the surface of the first gear (33). The bottom end of the connecting fixing rods (36) is fixedly connected with a welding gun (37), and the bottom end of the welding gun (37) points to the connection between the welding plate (13) and the welding rod (27).

2. The automatic plasma welding device for steel structures according to claim 1, characterized in that: The adjusting seat (9) is located in the middle of the conveyor belt (3). The armor plates (11) are all L-shaped. One end of the clamping sleeve (10) is opened with an L-shaped opening. One end of the L-shaped opening of the armor plate (11) is equipped with a distance sensor. The control terminal of the main controller (2) is electrically connected to an external power source. The control terminals of the conveyor belt (3), the first motor (16), the fourth electric push rod (19) and the distance sensor are all electrically connected to the main controller (2).

3. The automatic plasma welding device for steel structures according to claim 1, characterized in that: The leveling mechanism includes a central chamber (4), which is fixedly connected to the middle of the workbench (1). The adjusting seat (9) is located inside the central chamber (4). The bottom end of the adjusting seat (9) is connected to an adjusting plate (8) via a rotating shaft. One end of the adjusting plate (8) is connected to a receiving plate (5) via a rotating shaft. The connection between the adjusting plate (8) and the adjusting seat (9) forms a 90-degree angle with the connection between the adjusting plate (8) and the receiving plate (5). A first electric actuator (6) is provided on the inner wall of the bottom end of the central chamber (4), and the output end of the first electric actuator (6) is connected to the receiving plate. (5) is fixedly connected to the bottom end. The inner wall of the bottom end of the middle compartment (4) is uniformly provided with guide telescopic rods (7), and the top end of the guide telescopic rods (7) is fixedly connected to the bottom end of the receiving plate (5). The top end of the clamping sleeve (10) is provided with a level (12). One end of the receiving plate (5) is provided with a second electric push rod (14), and the top end of the second electric push rod (14) is in contact with the bottom end of the adjusting plate (8). The top end of the adjusting plate (8) is provided with a third electric push rod (15), and the top end of the third electric push rod (15) is in contact with the bottom end of the adjusting seat (9).

4. The automatic plasma welding device for steel structures according to claim 3, characterized in that: The two sets of level instruments (12) are used to detect the top level of the adjustment seat (9) and the welding plate (13), respectively. The control ends of the first electric actuator (6), the second electric actuator (14) and the third electric actuator (15) are all electrically connected to the main controller (2).

5. The automatic plasma welding device for steel structures according to claim 1, characterized in that: The power mechanism includes a guide rod (22). One end of the moving platform (21) is symmetrically and fixedly connected to the guide rod (22), and both ends of the guide rod (22) are fixedly connected to the inner wall of the fixed plate (20). One end of the moving platform (21) is connected to a second threaded rod (24) by a thread, and the top end of the second threaded rod (24) is connected to the fixed plate (20) by a bearing. The inner wall of the bottom end of the fixed plate (20) is provided with a second motor (23), and the output end of the second motor (23) is fixedly connected to the bottom end of the second threaded rod (24). The control end of the second motor (23) is electrically connected to the main controller (2).

6. The automatic plasma welding device for steel structures according to claim 1, characterized in that: One end of each welding torch (37) is connected to the output end of the feeding sleeve (26) via an electric wire, and one end of each welding torch (37) is connected to the gas cylinder via a flexible hose. The electric wire and the flexible hose are fixed and limited by a cable tie (25).

7. The automatic plasma welding device for steel structures according to claim 1, characterized in that: The control terminals of the feeding sleeve (26), the third motor (30) and the fourth motor (35) are all electrically connected to the main controller (2).

8. A method for operating an automatic plasma welding apparatus for steel structures as described in any one of claims 1-7, characterized in that: Step 1: Set the dimensions and control the device to work automatically through the main controller (2) so that the bottom inner wall of the armor plate (11) is lower than the surface of the conveyor belt (3). Then adjust the distance between the two armor plates (11) according to the size of the welding plate (13). After the user inputs the dimensions on the main controller (2), the output end of the first motor (16) moves the armor plate (11) through the first threaded rod (17) and the threaded sleeve (18). Step 2: Clamping. The welding plate (13) can be smoothly transported by the conveyor belt (3). When one end of the welding plate (13) is attached to one end of the armor plate (11), the first electric push rod (6) causes the clamping sleeve (10) and the armor plate (11) to move upward, so that the bottom end of the welding plate (13) is attached to the inner wall of the armor plate (11). At the same time, the output end of the fourth electric push rod (19) extends, so that the armor plate (11) can clamp the welding plate (13). Step 3: Leveling. Use two sets of level instruments (12) to check whether the welding plate (13) is in a horizontal position. If the welding plate (13) is not in a horizontal position, the second electric push rod (14) and the third electric push rod (15) can adaptively adjust the horizontal angle of the welding plate (13) so that the welding plate (13) is in a horizontal position. Step 4: Material feeding and bonding. The second motor (23) moves the moving table (21), the feeding sleeve (26) and the welding rod (27) downward through the second threaded rod (24). The material roller (29) and the third motor (30) can feed and fix the welding rod (27) so that the bottom end of the welding rod (27) is in contact with the welding plate (13). Step 5: Welding. The welding rod (27) and the welding plate (13) can be welded and fixed by the welding gun (37). At the same time, the output end of the fourth motor (35) drives the two sets of first gears (33) to rotate through the two sets of second gears (34). The first gears (33) drive the welding gun (37) to rotate through the connecting fixing rod (36). When the welding gun (37) rotates one revolution, the welding is completed. Step 6: Reset. The fourth motor (35), the second gear (34) and the first gear (33) reset the connecting fixing rod (36) and the welding gun (37) by rotating them in the opposite direction for one revolution, so as to facilitate the next welding. After welding is completed, the second motor (23) and the second threaded rod (24) move the moving table (21) and the unloading sleeve (26) upward. At the same time, the third motor (30) and the first electric push rod (6) work. The third motor (30) and the material roller (29) can move the welding rod (27) out of the unloading sleeve (26) so as to facilitate the downward movement of the next set of welding rods (27). Step 7: Material change. The first electric push rod (6) moves the adjusting seat (9) and the welding plate (13) down. The fourth electric push rod (19) makes the armor plate (11) no longer fix the welding plate (13). When the bottom end of the welding plate (13) is in contact with the surface of the conveyor belt (3), the adjusting seat (9) and the clamping sleeve (10) continue to move down until the top end of the armor plate (11) is lower than the welding plate (13). The welding plate (13) and the welding rod (27) are moved by the conveyor belt (3). When they are no longer between the armor plates (11), the first electric push rod (6) moves the clamping sleeve (10) and the armor plate (11) up, so that the inner wall of the bottom end of the armor plate (11) is lower than the surface of the conveyor belt (3) again, so as to limit and clamp the next set of welding plates (13).

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