Welding device for metal steel structure machining

Abstract

The invention relates to the technical field of welding devices, in particular to a welding device for metal steel structure machining, which comprises a machine base, a distance control motor is fixedly mounted on the surface of the machine base, a distance control threaded rod, a clamping seat, a conveying seat, a lifting threaded rod and a conveying roller are arranged, and the distance control threaded rod is matched with the clamping seat by utilizing the synergistic effect of the structures; the distance between the clamping blocks is adjusted through driving of the motor to adapt to workpieces of different lengths and is stably fixed through the clamping mechanism, the lifting threaded rod on the conveying base can drive the conveying roller and the pressing roller to move up and down, and the distance is flexibly adjusted to meet the conveying requirements of the workpieces of different thicknesses. The conveying roller is driven by the motor to be matched with the material pressing roller to form stable conveying, it is ensured that workpieces move linearly at a constant speed, positioning clamping and conveying distance adjustment of the workpieces are changed into stable conveying, the adaptability of the device to diversified workpieces is improved, the accuracy of the welding position is guaranteed, and the welding efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and in particular to a welding device for metal steel structure processing. Background Art

[0002] A metal steel structure welding device, a process equipment for connecting metal components, is widely used in modern architecture, bridges, ships, mechanical manufacturing and other fields. It mainly undertakes structural connection, load bearing, ensuring integrity, adapting to components of different shapes and thicknesses, effectively constructs various load-bearing skeletons, improves manufacturing efficiency and ensures project safety. The publication number CN222626746U discloses a steel structure welding device, which relates to the technical field of welding devices, including a workbench. A leakage hole is opened at the center position of the workbench. A cavity is arranged inside the workbench, and the leakage hole is communicated with the cavity. Chutes are symmetrically arranged on both sides of the leakage hole. Fixing components are respectively slidably arranged in the chutes. The fixing components include sliders slidably arranged in the chutes. A fixing ring is arranged on the sliders. Adjusting holes are symmetrically opened on the fixing ring. Clamping components are slidably inserted in the adjusting holes. A collection box is slidably pulled in the cavity. Spray rows are arranged on both sides of the leakage hole. A plurality of atomizing nozzles are arranged on the spray rows. A water tank is arranged on one side of the workbench. The spray rows are connected with the water tank through a first water pipe. In the welding process of this device, the steel component is flipped, which improves the work efficiency, and the welding slag is cooled down, which is convenient for subsequent cleaning. This invention can flip the steel component during the welding process by setting a flipping structure, and use the atomizing nozzles to cool down the welding slag, which is convenient for subsequent cleaning. However, in the face of modern metal steel structure processing scenarios, it is difficult to accurately and stably clamp steel pipes with different pipe diameters, wall thicknesses and lengths. When welding long-distance steel pipes, it is necessary to frequently stop the machine to manually adjust the position, resulting in welding misalignment and affecting the welding efficiency, and improvement is needed. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problems put forward in the above background art.

[0004] The present invention adopts the following technical solution: A welding device for metal steel structure processing, including a machine base, on the surface of which a distance control motor is fixedly installed. The output end of the distance control motor is fixedly installed with a distance control threaded rod. The surface of the distance control threaded rod is threadedly connected with a conveying block and a clamping block. The surface of the clamping block is fixedly installed with a clamping mechanism, and the surface of the conveying block is fixedly installed with a conveying seat. On the surface of the conveying seat, a lifting motor and a lifting slide rod are fixedly installed. The output end of the lifting motor is fixedly installed with a lifting threaded rod. The surface of the lifting threaded rod is threadedly connected with a conveying threaded block and a pressing material threaded block. The surface of the conveying threaded block is fixedly installed with a conveying motor block, and on the surface of the conveying motor block, a conveying motor is fixedly installed. The output end of the conveying motor is fixedly installed with a conveying roller. The other end of the conveying roller is slidably connected with a connecting block, and on the surface of the connecting block, a conveying slide rod block is fixedly installed. The surface of the pressing material threaded block is slidably connected with a pressing material roller.

[0005] Preferably, the clamping mechanism includes a clamping seat, a clamping motor, a clamping threaded rod, a convex clamping arm, and a concave clamping arm. On the surface of the clamping seat, a clamping motor is fixedly installed. The output end of the clamping motor is fixedly installed with a clamping threaded rod. The surface of the clamping threaded rod is threadedly connected with the convex clamping arm and the concave clamping arm. Here, by driving the clamping threaded rod to rotate through the clamping motor, the synchronous inward or outward movement of the convex clamping arm and the concave clamping arm can be realized. Using the accuracy of screw transmission, it can be adaptively adjusted according to the size and shape of the metal steel structure parts. For circular steel pipes of different sizes, tight and stable clamping can be achieved. At the same time, the cooperation of the convex and concave structures increases the contact area with the workpiece, disperses the clamping force, avoids causing indentation or damage to the metal surface, ensures the surface quality of the workpiece, and effectively prevents the workpiece from shifting and shaking during the welding process, ensuring the accuracy of the welding position, improving the welding quality and efficiency, and providing a reliable guarantee for subsequent processing procedures.

[0006] Preferably, both the distance control threaded rod and the lifting threaded rod are bidirectional threaded rods. The length of the distance control threaded rod is the same as the length of the machine base. The conveying block and the clamping block are symmetrically distributed at both ends of the distance control threaded rod. Here, it can be flexibly adapted to steel pipes of different lengths. When welding short steel pipes, the distance control motor drives the bidirectional threaded rod to rotate, so that the symmetrically distributed conveying block and clamping block move inward synchronously, shortening the distance between the two to accurately position the short pipe. When welding long steel pipes, the bidirectional threaded rod rotates in the reverse direction to drive the two to expand outward. Using the full length of the threaded rod equal to the length of the machine base, a larger length range can be covered. It can not only ensure the central positioning accuracy of steel pipes of different lengths during welding, but also avoid workpiece offset caused by spacing adjustment errors due to the stability of screw transmission. Cooperating with the clamping mechanism for clamping, welding operations within different length ranges can be realized, improving the versatility and processing adaptability of the device to steel pipes of different specifications.

[0007] Preferably, the lifting threaded rod and the lifting slide rod are of the same length and symmetrically distributed on both sides of the conveying seat. The conveying roller and the pressure roller are symmetrically distributed at both ends of the lifting threaded rod. The surface of the conveying slide block is slidably connected to the surface of the lifting slide rod. Here, the conveying threaded block and the pressure feeding threaded block are synchronously moved up and down along the lifting slide rod, so that the distance between the conveying roller and the pressure roller can be flexibly adjusted. Whether it is a thin-walled and thin pipe or a thick-walled and thick pipe, it can accurately fit the surface of the steel pipe, provide a stable conveying pressure. The sliding connection between the conveying slide block and the lifting slide rod ensures the smoothness of the conveying motor block during the lifting process, avoids the deviation of the conveying roller in the vertical direction, ensures that the steel pipe always moves in a straight line during the conveying process, prevents the deviation of the welding position caused by unstable conveying, thereby improving the welding quality and processing efficiency, and providing a reliable guarantee for diversified steel pipe welding operations.

[0008] Preferably, a welding motor plate and a welding plate are fixedly installed on the surface of the machine base. A welding motor is fixedly installed on the surface of the welding motor plate. The output end of the welding motor is fixedly installed with a gear. A toothed ring is meshed with the surface of the gear. A welding ring is fixedly installed inside the toothed ring. A welding head is fixedly installed on the surface of the welding ring. Here, the welding motor transmits power accurately to the welding ring through the meshing transmission of the gear and the toothed ring, so that the welding head can make a uniform rotational motion around the circumference of the steel pipe. There is no need to manually adjust the welding angle, which improves the welding efficiency. The meshing transmission of the gear and the toothed ring has a high transmission accuracy, which can ensure the stable position of the welding head during rotation, ensure that the welds are uniform and continuous, effectively avoid problems such as missed welding and welding deviation, and improve the welding quality. At the same time, the position of the welding head on the welding ring can adapt to metal steel structures with different pipe diameters and different welding process requirements, realizing all-round and multi-angle welding operations, and meeting diversified welding production needs.

[0009] Preferably, there are five welding heads, which are evenly distributed on the surface of the welding ring in a circular pattern. The welding ring is located in the exact middle of the machine base. Here, the five welding heads are evenly distributed on the surface of the welding ring, and can simultaneously weld multiple points in the circumferential direction of the steel pipe, greatly shortening the operation time compared with a single welding head. It is especially suitable for large-diameter steel pipes or workpieces that require dense welds, realizing batch and high-efficiency production. The centrally arranged welding ring can ensure that the steel pipe is always in the center position of the welding head during the conveying process, avoid the welding distance deviation caused by eccentricity, cooperate with the stable transmission of the conveying mechanism, keep the distance between each welding head and the surface of the steel pipe consistent, ensure the uniformity and consistency of the welds. The synchronous operation of multiple welding heads can also disperse the welding heat, reduce the metal deformation problem caused by local overheating. Combined with the symmetrically distributed structural design, it can further improve the stability of the welding process, and is suitable for metal steel structure processing scenarios with high requirements for welding accuracy and efficiency.

[0010] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0011] 1. In the present invention, by providing a distance control screw rod, a clamping seat, a conveying seat, a lifting screw rod, and a conveying roller, through the synergistic effect of these structures, the distance control screw rod cooperates with the clamping seat, and the distance between the clamping blocks is adjusted by the drive of a motor to adapt to workpieces of different lengths and is stably fixed by the clamping mechanism. The lifting screw rod on the conveying seat can drive the conveying roller and the pressure roller to move up and down, flexibly adjusting the distance to meet the conveying requirements of workpieces of different thicknesses. The conveying roller, driven by the motor, cooperates with the pressure roller to form stable conveying, ensuring the uniform linear movement of the workpiece. From the positioning and clamping of the workpiece, the adjustment of the conveying distance to the stable conveying, the adaptability of the device to diverse workpieces is improved, the accuracy of the welding position is guaranteed, and the welding efficiency and quality are enhanced.

[0012] 2. In the present invention, by providing a welding motor, a gear, a gear ring, a welding ring, and a welding head, through the synergistic effect of these structures, the welding motor drives the gear to rotate. Through the meshing transmission of the gear and the gear ring, the power is synchronously transmitted to the welding ring, causing the welding head to make a uniform rotational movement around the circumference of the workpiece to achieve all-round welding. The precise meshing of the gear and the gear ring ensures no slippage during the transmission process, guaranteeing the uniform and stable rotation speed of the welding head and avoiding the problem of uneven weld thickness caused by rotational speed fluctuations. Multiple welding heads evenly distributed on the welding ring can operate synchronously, welding multiple points on the workpiece simultaneously, greatly shortening the welding time for a single station. Combined with the continuous operation of the conveying mechanism, a pipeline-type welding operation is formed. This structure combines motor drive and mechanical transmission, not only realizing the automatic adjustment of the welding angle but also improving the production efficiency through the cooperation of multiple welding heads. It is suitable for batch processing of metal steel structure parts with different pipe diameters, ensuring the uniformity of the weld and the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of a welding device for metal steel structure processing proposed by the present invention;

[0014] Figure 2 is a schematic diagram of the distance control structure of a welding device for metal steel structure processing proposed by the present invention;

[0015] Figure 3 is a schematic diagram of the clamping structure of a welding device for metal steel structure processing proposed by the present invention;

[0016] Figure 4 is a schematic diagram of the conveying structure of a welding device for metal steel structure processing proposed by the present invention;

[0017] Figure 5 is a schematic diagram of the welding structure of a welding device for metal steel structure processing proposed by the present invention.

[0018] Legend Explanation:

[0019] 1. Machine base; 2. Spacing control motor; 3. Spacing control threaded rod; 4. Conveyor block; 5. Clamping block; 6. Clamping seat; 7. Clamping motor; 8. Clamping threaded rod; 9. Convex clamping arm; 10. Concave clamping arm; 11. Conveyor seat; 12. Lifting motor; 13. Lifting slide bar; 14. Lifting threaded rod; 15. Conveyor threaded block; 16. Pressing material threaded block; 17. Conveyor motor block; 18. Conveyor motor; 19. Conveyor roller; 20. Connecting block; 21. Conveyor slide bar block; 22. Pressing material roller; 23. Welding motor plate; 24. Welding plate; 25. Welding motor; 26. Gear; 27. Gear ring; 28. Welding ring; 29. Welding head. Detailed implementation manner

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] Please refer to Figures 1-4, the present invention provides a technical solution: a welding device for metal steel structure processing, including a machine base 1, which serves as the basic support component of the welding device, provides an installation platform for other components such as the distance control motor 2 and the welding motor plate 23, and ensures the accuracy and stability of the installation positions of each component. A distance control motor 2 is fixedly installed on the surface of the machine base 1, and a distance control threaded rod 3 is fixedly installed at the output end of the distance control motor 2. A conveying block 4 and a clamping block 5 are threadedly connected to the surface of the distance control threaded rod 3. A clamping mechanism is fixedly installed on the surface of the clamping block 5. The clamping mechanism includes a clamping seat 6, a clamping motor 7, a clamping threaded rod 8, a convex clamping arm 9, and a concave clamping arm 10. A clamping motor 7 is fixedly installed on the surface of the clamping seat 6, and a clamping threaded rod 8 is fixedly installed at the output end of the clamping motor 7. A convex clamping arm 9 and a concave clamping arm 10 are threadedly connected to the surface of the clamping threaded rod 8. Here, by driving the clamping threaded rod 8 to rotate through the clamping motor 7, the synchronous inward or outward movement of the convex clamping arm 9 and the concave clamping arm 10 can be achieved. Utilizing the precision of screw transmission, it can be adaptively adjusted according to the size and shape of the metal steel structure parts. For circular steel pipes of different sizes, tight and stable clamping can be achieved. At the same time, the cooperation of the convex and concave structures increases the contact area with the workpiece, disperses the clamping force, avoids causing indentations or damages to the metal surface, ensures the surface quality of the workpiece, and effectively prevents the workpiece from shifting and shaking during the welding process, ensuring the accuracy of the welding position, improving the welding quality and efficiency, and providing a reliable guarantee for subsequent processing procedures. A conveying seat 11 is fixedly installed on the surface of the conveying block 4. A lifting motor 12 and a lifting slide bar 13 are fixedly installed on the surface of the conveying seat 11. A lifting threaded rod 14 is fixedly installed at the output end of the lifting motor 12. Both the distance control threaded rod 3 and the lifting threaded rod 14 are bidirectional threaded rods. The length of the distance control threaded rod 3 is the same as the length of the machine base 1. The conveying block 4 and the clamping block 5 are symmetrically distributed at both ends of the distance control threaded rod 3. Here, flexible adaptation to steel pipes of different lengths can be achieved. When welding short steel pipes, the bidirectional threaded rod is driven to rotate through the distance control motor 2, so that the symmetrically distributed conveying block 4 and the clamping block 5 move inward synchronously, shortening the distance between the two to accurately position the short pipe. When welding long steel pipes, the bidirectional threaded rod rotates in the reverse direction to drive the two to expand outward. Using the full length of the threaded rod equal to the length of the machine base 1, a larger length range can be covered. It can not only ensure the center positioning accuracy of steel pipes of different lengths during welding, but also avoid workpiece offset caused by spacing adjustment errors due to the stability of screw transmission. Cooperating with the clamping mechanism for clamping, welding operations within different length ranges can be achieved, improving the versatility and processing adaptability of the device to steel pipes of different specifications. A conveying threaded block 15 and a pressing material threaded block 16 are threadedly connected to the surface of the lifting threaded rod 14. A conveying motor block 17 is fixedly installed on the surface of the conveying threaded block 15. A conveying motor 18 is fixedly installed on the surface of the conveying motor block 17. A conveying roller 19 is fixedly installed at the output end of the conveying motor 18. The other end of the conveying roller 19 is slidably connected to a connecting block 20. A conveying slide bar block 21 is fixedly installed on the surface of the connecting block 20.The surface of the pressure-feeding threaded block 16 is slidably connected with a pressure-feeding roller 22. The lifting threaded rod 14 and the lifting slide rod 13 are of the same length and symmetrically distributed on both sides of the conveying seat 11. The conveying roller 19 and the pressure-feeding roller 22 are symmetrically distributed at both ends of the lifting threaded rod 14. The surface of the conveying slide block 21 is slidably connected with the surface of the lifting slide rod 13. Here, the conveying threaded block 15 and the pressure-feeding threaded block 16 are synchronously moved up and down along the lifting slide rod 13, so that the distance between the conveying roller 19 and the pressure-feeding roller 22 can be flexibly adjusted. Whether it is a thin-walled and thin pipe or a thick-walled and thick pipe, it can accurately fit the surface of the steel pipe and provide a stable conveying pressure. The sliding connection between the conveying slide block 21 and the lifting slide rod 13 ensures the stability of the conveying motor block 17 during the lifting process, avoids the deviation of the conveying roller 19 in the vertical direction, ensures that the steel pipe always moves in a straight line during the conveying process, prevents the deviation of the welding position caused by unstable conveying, thereby improving the welding quality and processing efficiency, and providing a reliable guarantee for diversified steel pipe welding operations.

[0024] Embodiment 2

[0025] Please refer to Figure 5, a welding motor plate 23 and a welding plate 24 are fixedly installed on the surface of the machine base 1. The welding motor plate 23 is used to install the welding motor 25. The welding plate 24 provides an installation and support structure for welding-related components, ensuring the installation accuracy and working stability of each component of the welding mechanism. The welding motor 25 is fixedly installed on the surface of the welding motor plate 23. The output end of the welding motor 25 is fixedly installed with a gear 26. A gear ring 27 is meshed with the surface of the gear 26. The inside of the gear ring 27 is fixedly installed with a welding ring 28. The welding head 29 is fixedly installed on the surface of the welding ring 28. Here, the welding motor 25 transmits power accurately to the welding ring 28 through the meshing transmission of the gear 26 and the gear ring 27, enabling the welding head 29 to make a uniform rotational motion around the circumference of the steel pipe, eliminating the need for manual adjustment of the welding angle and improving the welding efficiency. The meshing transmission between the gear 26 and the gear ring 27 has a high transmission accuracy, which can ensure the stable position of the welding head 29 during rotation, ensuring uniform and continuous weld seams, effectively avoiding problems such as missed welding and welding deviation, and improving the welding quality. At the same time, the position of the welding head 29 on the welding ring 28 can adapt to metal steel structures with different pipe diameters and different welding process requirements, realizing all-round and multi-angle welding operations and meeting diverse welding production needs. There are five welding heads 29, which are evenly distributed on the surface of the welding ring 28 in a circular pattern. The welding ring 28 is located in the exact middle of the machine base 1. Here, the five welding heads 29 are evenly distributed on the surface of the welding ring 28, enabling simultaneous welding of multiple points in the circumferential direction of the steel pipe. Compared with a single welding head 29, the operation time is significantly shortened, especially suitable for large-diameter steel pipes or workpieces that require dense weld seams, achieving batch and high-efficiency production. The centrally arranged welding ring 28 can ensure that the steel pipe is always in the center position of the welding head 29 during transportation, avoiding welding distance deviation caused by eccentricity. Combined with the stable transmission of the conveying mechanism, the distance between each welding head 29 and the surface of the steel pipe is kept consistent, ensuring the uniformity and consistency of the weld seams. The synchronous operation of multiple welding heads 29 can also disperse the welding heat, reducing the problem of metal deformation caused by local overheating. Combined with the symmetric distribution structure design, the stability of the welding process can be further improved, suitable for metal steel structure processing scenarios with high requirements for welding accuracy and efficiency.

[0026] Working principle: When facing the modern metal steel structure processing scenario, where it is necessary to stably clamp steel pipes of different specifications and automatically convey long steel pipes to prevent welding misalignment and affect welding efficiency caused by frequent shutdowns for position adjustment, the distance control motor 2 drives the distance control threaded rod 3 to rotate, causing the conveying block 4 and the clamping block 5 to move and position the steel pipe. The clamping motor 7 drives the clamping threaded rod 8 to rotate, causing the convex clamping arm 9 and the concave clamping arm 10 to automatically clamp the steel pipe. The lifting motor 12 drives the lifting threaded rod 14 to rotate, driving the conveying threaded block 15 and the pressure feeding threaded block 16 to move along the lifting slide rod 13, adjusting the distance between the conveying roller 19 and the pressure feeding roller 22 to match the thickness of the steel pipe. The conveying motor 18 drives the conveying roller 19 to rotate, cooperating with the pressure feeding roller 22 to achieve the conveying of the steel pipe. The welding motor 25 drives the welding ring 28 and the welding head 29 to perform a uniform rotational motion around the steel pipe through the meshing transmission of the gear 26 and the gear ring 27, synchronously completing multi-point welding, maintaining stable conveying and precise welding throughout the process, and improving the welding quality and efficiency.

[0027] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A welding device for metal steel structure processing, including a machine base (1), characterized in that: A distance control motor (2) is fixedly installed on the surface of the machine base (1). The output end of the distance control motor (2) is fixedly installed with a distance control threaded rod (3). The surface of the distance control threaded rod (3) is threadedly connected with a conveying block (4) and a clamping block (5). A clamping mechanism is fixedly installed on the surface of the clamping block (5). A conveying seat (11) is fixedly installed on the surface of the conveying block (4). A lifting motor (12) and a lifting slide bar (13) are fixedly installed on the surface of the conveying seat (11). The output end of the lifting motor (12) is fixedly installed with a lifting threaded rod (14). The surface of the lifting threaded rod (14) is threadedly connected with a conveying threaded block (15) and a material pressing threaded block (16). A conveying motor block (17) is fixedly installed on the surface of the conveying threaded block (15). A conveying motor (18) is fixedly installed on the surface of the conveying motor block (17). The output end of the conveying motor (18) is fixedly installed with a conveying roller (19). The other end of the conveying roller (19) is slidably connected with a connecting block (20). A conveying slide bar block (21) is fixedly installed on the surface of the connecting block (20). A material pressing roller (22) is slidably connected to the surface of the material pressing threaded block (16).

2. The welding device for metal steel structure processing according to claim 1, characterized in that: The clamping mechanism includes a clamping seat (6), a clamping motor (7), a clamping threaded rod (8), a convex clamping arm (9), and a concave clamping arm (10). The clamping motor (7) is fixedly installed on the surface of the clamping seat (6). The output end of the clamping motor (7) is fixedly installed with a clamping threaded rod (8). The surface of the clamping threaded rod (8) is threadedly connected with the convex clamping arm (9) and the concave clamping arm (10).

3. The welding device for metal steel structure processing according to claim 1, characterized in that: Both the distance control threaded rod (3) and the lifting threaded rod (14) are bidirectional threaded rods. The length of the distance control threaded rod (3) is the same as the length of the machine base (1). The conveying block (4) and the clamping block (5) are symmetrically distributed at both ends of the distance control threaded rod (3).

4. The welding device for processing metal steel structures according to claim 1, characterized in that: The lengths of the lifting threaded rod (14) and the lifting slide bar (13) are the same and they are symmetrically distributed on both sides of the conveying seat (11). The conveying roller (19) and the material pressing roller (22) are symmetrically distributed at both ends of the lifting threaded rod (14). The surface of the conveying slide bar block (21) is slidably connected to the surface of the lifting slide bar (13).

5. The welding device for metal steel structure processing according to claim 1, characterized in that: A welding motor plate (23) and a welding plate (24) are fixedly installed on the surface of the machine base (1). A welding motor (25) is fixedly installed on the surface of the welding motor plate (23). The output end of the welding motor (25) is fixedly installed with a gear (26). A gear ring (27) is meshed with the surface of the gear (26). A welding ring (28) is fixedly installed inside the gear ring (27). A welding head (29) is fixedly installed on the surface of the welding ring (28).

6. The welding device for metal steel structure processing according to claim 5, wherein: There are five welding heads (29) and they are evenly distributed in a circle on the surface of the welding ring (28). The welding ring (28) is located in the exact middle of the machine base (1).

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