Welding device for metal pipeline

Abstract

The invention discloses a welding device for a metal pipeline, and relates to the technical field of metal pipeline machining, the welding device comprises a cooling mechanism, and a fixing mechanism is arranged at the top of the cooling mechanism. In the using process, under the action of the cooling device, the circulating pump and the cooling pipe, air in the cooling box can be cooled, then the air is conveyed into the metal pipeline to absorb heat generated by welding, and the heat is recycled through the first connecting pipe; and under the cooperation of a fan, heat dissipation fins and a heat conduction pipe, air absorbing heat can be cooled to achieve cyclic utilization, and therefore efficient heat dissipation treatment can be conducted on the metal pipeline during welding, shrinkage deformation caused by heat accumulation formed between layers of the metal pipeline is avoided, and the service life of the metal pipeline is prolonged. And the subsequent welding quality is greatly improved, subsequent machining and using are facilitated, and then the actual using effect of the metal pipeline welding device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe processing, and specifically relates to a welding device for metal pipes. Background Art

[0002] Metal pipes play a crucial role in modern industrial systems and infrastructure construction, and are widely used in many fields such as oil, natural gas, chemical industry, building water supply and drainage, and power transmission. In the oil and natural gas industries, long-distance oil and gas pipelines stretch for thousands of kilometers, efficiently transporting oil and gas resources from extraction sites to processing and consumption areas. They are the "main arteries" of energy supply. The connection quality of metal pipes has a significant impact on the safe and stable operation of the system. Welding, as a commonly used connection method, plays a decisive role. High-quality welded joints can ensure the tightness of the internal medium transportation of the pipeline, prevent leakage from causing environmental pollution and safety accidents, and at the same time withstand the pressure, temperature changes, and external mechanical stresses during the operation of the pipeline system, maintaining the structural integrity of the pipeline.

[0003] In the prior art, when metal pipes need to be connected and fixed, a welding device is required to perform welding on the metal pipes to achieve the connection and fixation between the pipes. However, during the welding process of metal pipes, due to the high temperature generated during welding and the difficulty of quickly discharging it, heat accumulation will occur between the metal pipe layers, causing shrinkage deformation. During the welding process, the shrinkage and deformation of the metal pipe will not only affect the subsequent welding quality but also affect the further processing and use of the subsequent pipes, resulting in poor actual use effects of the metal pipe welding device. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding device for metal pipes to solve the problem that in the background above, when the traditional welding device welds metal pipes, the heat generated cannot be discharged, resulting in the deformation of the metal pipes during the welding process.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding device for metal pipes, including a cooling mechanism, and a fixing mechanism is arranged on the top of the cooling mechanism;

[0006] The cooling mechanism includes a workbench. At the bottom of the inner wall of the workbench, a mounting frame is fixedly installed. A plurality of ventilation grooves are formed on the outer surface of the mounting frame. A heat conduction pipe is arranged on the inner surface of the mounting frame. A first connecting pipe is fixedly communicated with the outer surface of the heat conduction pipe. At the bottom of the inner wall of the mounting frame, heat dissipation fins are fixedly installed, and the inner surface of the heat dissipation fins is fixedly connected to the outer surface of the heat conduction pipe. Between the inner surfaces of the mounting frame, two mounting plates are fixedly installed. On one side of the outer walls of the two mounting plates, two fans are fixedly installed respectively. At the bottom of the inner wall of the workbench, a cooling box is fixedly installed, and one side of the outer wall of the cooling box is fixedly communicated with the outer surface of the heat conduction pipe. An air inlet groove is formed on one side of the outer wall of the cooling box. A plurality of guiding plates are fixedly installed on the inner surface of the cooling box.

[0007] Preferably, a top plate is fixedly installed on the top of the cooling box. A cooling pipe is arranged at the bottom of the inner wall of the cooling box. A circulating pump is fixedly installed on the top of the top plate, and the outer surface of the circulating pump is fixedly communicated with the outer surface of the cooling pipe.

[0008] Preferably, a cooling device is fixedly installed on the top of the top plate, and the outer surface of the cooling device is fixedly communicated with the outer surface of the cooling pipe. A second connecting pipe is fixedly communicated with one side of the outer wall of the cooling box. An air delivery pump is fixedly installed at the bottom of the inner wall of the workbench, and the outer surface of the air delivery pump is fixedly communicated with the outer surface of the second connecting pipe. A welding assembly is fixedly installed on the top of the workbench.

[0009] Preferably, the fixing mechanism includes a bottom plate. On the top of the bottom plate, two support plates are fixedly installed. On one side of the outer wall of the bottom plate, a second motor is fixedly installed. On the top of the bottom plate, two moving grooves are formed. Between the inner surfaces of the two moving grooves, a bidirectional lead screw is movably inserted, and the outer surface of the bidirectional lead screw is fixedly connected to the output end of the second motor. On the inner surfaces of the two moving grooves, two moving frames are movably embedded respectively, and the inner surface of the moving frame is threadedly connected to the outer surface of the bidirectional lead screw. On one side of the outer wall of one of the two moving frames, a third motor is fixedly installed, and a first gear is fixedly sleeved on the output end of the third motor.

[0010] Preferably, fixing disks are arranged on the inner surfaces of the two moving frames. On the outer surface of one of the two fixing disks, a second gear is fixedly sleeved. On the inner surfaces of the two fixing disks, air delivery pipes are fixedly inserted respectively.

[0011] Preferably, pipe rotary connectors are arranged on the inner surfaces of the two air delivery pipes. Three insertion slots are formed on the outer surfaces of the two fixing disks. In the inner surfaces of the three insertion slots, moving columns are movably inserted respectively. On the outer surfaces of the three moving columns, fixing plates are fixedly installed respectively. On the outer surfaces of the three fixing plates, anti-slip pads are fixedly installed respectively.

[0012] Preferably, the inner walls of both of the fixing disks are each provided with three meshing wheels, and the outer walls of the meshing wheels are meshed with the outer walls of the movable columns. The inner walls of both of the fixing disks are each provided with an annular gear, and the inner wall of the annular gear is meshed with the outer wall of the meshing wheel.

[0013] Preferably, fourth motors are fixedly installed on the outer walls of both of the fixing disks. The output ends of the fourth motors are each fixedly sleeved with a transmission wheel, and the outer wall of the transmission wheel is meshed with the outer wall of the annular gear. The inner walls of both of the fixing disks are each provided with two sealing rings.

[0014] Preferably, a chute is formed in the top of the base plate. The inner wall of the chute is movably embedded with a mounting table. A first motor is fixedly installed on the top of the mounting table. The output end of the first motor is fixedly sleeved with a grinding wheel. A telescopic rod is fixedly inserted into the inner wall of the base plate, and the telescopic end of the telescopic rod is fixedly connected to one side of the outer wall of the mounting table.

[0015] Preferably, the top of the workbench is fixedly connected to the bottom of the base plate. The inner walls of both of the pipe rotary connectors are fixedly connected to the outer walls of the first connecting pipe and the second connecting pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. During the use of the present invention, when the metal pipe needs to be cooled during the welding process, first, under the action of the air delivery pump, the second connecting pipe, and the air inlet groove, air is sucked into the inside of the cooling box. Under the action of the guiding plate, the air can move slowly inside the cooling box. At this time, under the action of the cooling device, the circulation pump, and the cooling pipe, the air inside the cooling box can be cooled. Subsequently, it is delivered into the metal pipe to absorb the heat generated by welding, and is recycled through the first connecting pipe. Moreover, through the cooperation of the fan, the heat dissipation fins, and the heat conduction pipe, the air that has absorbed heat can be cooled, and finally enters the cooling box for recycling, so that the metal pipe during welding can be efficiently cooled, avoiding shrinkage deformation caused by heat accumulation between the metal pipe layers, greatly improving the subsequent welding quality and facilitating subsequent processing and use, thereby improving the actual use effect of the metal pipe welding device.

[0018] 2. During the use of the present invention, when welding a metal pipe, it is necessary to fix it. First, move the metal pipe to a suitable position and insert it into the fixing plate. Then, with the cooperation of structures such as the fourth motor, transmission wheel, and annular gear, the movable column and the fixing plate can be driven to move towards the middle, thus completing the fixation of the metal pipe. And under the action of the anti-slip pad, the metal pipe can be fixed more tightly. Subsequently, under the action of the second motor and the bidirectional lead screw, the movable frame is driven to move inside the sliding groove, and the metal pipe is driven to a suitable position so that the cross-sections of the metal pipes are in contact. Then, the welding of the metal pipe is completed with the cooperation of the third motor, the first gear, and the welding assembly. Through the above structures and methods, the metal pipe can be effectively fixed, avoiding the displacement of the metal pipe during welding and improving the welding effect.

[0019] 3. During the use of the present invention, after the metal pipe is fixed, under the action of the telescopic rod, the mounting table is driven to move inside the sliding groove, and the first motor and the grinding wheel are driven to a suitable position so that the grinding wheel contacts the surface of the metal pipe. Subsequently, under the action of the first motor, the grinding wheel is driven to rotate, thereby enabling the grinding treatment of the metal pipe, avoiding the influence of rust and impurities on the outer surface of the metal pipe on subsequent welding, and further improving the welding quality of the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of a welding device for metal pipes according to the present invention;

[0021] Figure 2 is a perspective view of the cooling mechanism in a welding device for metal pipes according to the present invention;

[0022] Figure 3 is a sectional view of the cooling mechanism in a welding device for metal pipes according to the present invention;

[0023] Figure 4 is a disassembled sectional view of the cooling mechanism in a welding device for metal pipes according to the present invention;

[0024] Figure 5 is a perspective view of the fixing mechanism in a welding device for metal pipes according to the present invention;

[0025] Figure 6 is a disassembled view of the fixing mechanism in a welding device for metal pipes according to the present invention;

[0026] Figure 7 is a sectional view of the fixing mechanism in a welding device for metal pipes according to the present invention;

[0027] Figure 8 is a disassembled sectional view of the fixing mechanism in a welding device for metal pipes according to the present invention.

[0028] In the figure: 1. Cooling mechanism; 11. Workbench; 112. Welding assembly; 12. Mounting frame; 121. Ventilation groove; 122. Heat conduction pipe; 123. First connecting pipe; 124. Heat dissipation fins; 125. Mounting plate; 126. Fan; 13. Cooling box; 131. Air intake groove; 132. Guide plate; 133. Top plate; 134. Cooling pipe; 135. Circulation pump; 136. Cooling device; 137. Second connecting pipe; 138. Air delivery pump; 2. Fixing mechanism; 21. Bottom plate; 211. Slide groove; 212. Mounting table; 213. First motor; 214. Grinding wheel; 215. Telescopic rod; 22. Support plate; 23. Second motor; 24. Moving groove; 241. Bi-directional lead screw; 242. Moving frame; 243. Third motor; 244. First gear; 25. Fixed disk; 251. Second gear; 252. Air delivery pipe; 253. Pipe rotary connector; 26. Insertion slot; 261. Moving column; 262. Fixed plate; 263. Anti-slip pad; 264. Meshing gear; 265. Annular gear; 27. Fourth motor; 271. Driving wheel; 28. Sealing ring. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1, referring to Figures 1 - 8 As shown: The present invention provides a welding device for metal pipes, including a cooling mechanism 1, and a fixing mechanism 2 is arranged on the top of the cooling mechanism 1;

[0031] The cooling mechanism 1 includes a workbench 11. At the bottom of the inner wall of the workbench 11, a mounting frame 12 is fixedly installed. A plurality of ventilation grooves 121 are formed on the outer surface of the mounting frame 12. A heat conduction tube 122 is arranged on the inner surface of the mounting frame 12. A first connecting tube 123 is fixedly communicated with the outer surface of the heat conduction tube 122. A heat dissipation fin 124 is fixedly installed at the bottom of the inner wall of the mounting frame 12, and the inner surface of the heat dissipation fin 124 is fixedly connected to the outer surface of the heat conduction tube 122. Two mounting plates 125 are fixedly installed between the inner surfaces of the mounting frame 12. Two fans 126 are fixedly installed on one side of the outer walls of the two mounting plates 125. A cooling box 13 is fixedly installed at the bottom of the inner wall of the workbench 11, and one side of the outer wall of the cooling box 13 is fixedly communicated with the outer surface of the heat conduction tube 122. An air inlet groove 131 is formed on one side of the outer wall of the cooling box 13. A plurality of guide plates 132 are fixedly installed on the inner surface of the cooling box 13. A top plate 133 is fixedly installed on the top of the cooling box 13. A cooling tube 134 is arranged at the bottom of the inner wall of the cooling box 13. A circulation pump 135 is fixedly installed on the top of the top plate 133, and the outer surface of the circulation pump 135 is fixedly communicated with the outer surface of the cooling tube 134. A cooling device 136 is fixedly installed on the top of the top plate 133, and the outer surface of the cooling device 136 is fixedly communicated with the outer surface of the cooling tube 134. A second connecting tube 137 is fixedly communicated with one side of the outer wall of the cooling box 13. An air delivery pump 138 is fixedly installed at the bottom of the inner wall of the workbench 11, and the outer surface of the air delivery pump 138 is fixedly communicated with the outer surface of the second connecting tube 137. A welding assembly 112 is fixedly installed on the top of the workbench 11.

[0032] In this embodiment, when the metal pipe needs to be cooled during the welding process, first, under the action of the air delivery pump 138 and the second connecting pipe 137, external air enters the cooling box 13 from the air inlet groove 131, and under the action of the guide plate 132, the air can move slowly inside the cooling box 13. At the same time, under the action of the circulating pump 135, the cooling water inside the cooling pipe 134 can circulate and absorb the heat of the air. After the cooling water absorbs heat, it is transported to the inside of the cooling device 136. Through the fan and the semiconductor heat dissipation device inside the cooling device 136, the cooling water can be cooled, so that the cooling water can continuously cool the air inside the cooling box 13 for a long time. Subsequently, under the action of the air delivery pump 138 and the second connecting pipe 137, the cooled air is transported into the metal pipe during welding. Through the continuous movement of the cold air, the heat generated by the metal pipe during welding can be absorbed and recycled through the first connecting pipe 123. During the recycling process, when the air that has absorbed heat is transported into the heat conduction pipe 122, through the cooperation of the fan 126 and the ventilation groove 121, the air inside the mounting frame 12 can flow faster, and with the cooperation of the heat dissipation fins 124, the air inside the heat conduction pipe 122 can be cooled. Subsequently, the air enters the cooling box 13 so that it can be recycled, thereby cooling the metal pipe during the welding process, avoiding shrinkage deformation caused by thermal accumulation between the metal pipe layers, and facilitating subsequent processing and use.

[0033] Embodiment 2, according to Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown in the figure, the fixing mechanism 2 includes a bottom plate 21. Two support plates 22 are fixedly installed on the top of the bottom plate 21. A second motor 23 is fixedly installed on one side of the outer wall of the bottom plate 21. Two moving grooves 24 are opened on the top of the bottom plate 21. A bidirectional lead screw 241 is movably inserted between the inner walls of the two moving grooves 24, and the outer wall of the bidirectional lead screw 241 is fixedly connected to the output end of the second motor 23. Two moving frames 242 are movably embedded in the inner walls of the two moving grooves 24 respectively, and the inner wall of the moving frame 242 is threadedly connected to the outer wall of the bidirectional lead screw 241. A third motor 243 is fixedly installed on one side of the outer wall of one of the two moving frames 242. A first gear 244 is fixedly sleeved on the output end of the third motor 243. Fixed disks 25 are arranged on the inner walls of the two moving frames 242 respectively. A second gear 251 is fixedly sleeved on the outer wall of one of the two fixed disks 25. Air delivery pipes 252 are fixedly inserted into the inner walls of the two fixed disks 25 respectively. Pipe rotary connectors 253 are arranged on the inner walls of the two air delivery pipes 252 respectively. Three insertion slots 26 are opened on the outer walls of the two fixed disks 25 respectively. Moving columns 261 are movably inserted into the inner walls of the three insertion slots 26 respectively. Fixing plates 262 are fixedly installed on the outer walls of the three moving columns 261 respectively. Anti-slip pads 263 are fixedly installed on the outer walls of the three fixing plates 262 respectively. Three meshing wheels 264 are arranged on the inner walls of the two fixed disks 25 respectively, and the outer wall of the meshing wheel 264 is meshed with the outer wall of the moving column 261. Annular gears 265 are arranged on the inner walls of the two fixed disks 25 respectively, and the inner wall of the annular gear 265 is meshed with the outer wall of the meshing wheel 264. Fourth motors 27 are fixedly installed on the outer walls of the two fixed disks 25 respectively. Driving wheels 271 are fixedly sleeved on the output ends of the fourth motors 27 respectively, and the outer wall of the driving wheel 271 is meshed with the outer wall of the annular gear 265. Two sealing rings 28 are arranged on the inner walls of the two fixed disks 25 respectively.

[0034] In this embodiment, when welding a metal pipe is required, the metal pipe needs to be fixed first. Under the operation of the staff, the metal pipe is inserted into the inside of the fixing plate 25. And under the action of the sealing ring 28, the sealing performance of the metal pipe port can be improved. Then, under the action of the fourth motor 27, the driving wheel 271 is driven to rotate. At the same time, under the action of the annular gear 265, the meshing wheel 264 can be driven to rotate. The rotation of the meshing wheel 264 can drive the movable column 261 to move inside the insertion groove 26 and drive the fixing plate 262 to move towards the middle, so as to squeeze and fix the metal pipe in the fixing plate 25. At the same time, under the action of the anti-slip pad 263, the metal pipe can be fully fixed to avoid displacement during subsequent processing and improve its processing effect. After the metal pipe is fixed, under the action of the second motor 23, the bidirectional lead screw 241 is driven to rotate, so that the movable frame 242 moves towards the middle inside the movable groove 24 and drives the metal pipe to move to a suitable position, making the cross-sections of the metal pipes in contact. Subsequently, after the metal pipe is pretreated, the metal pipe is welded under the action of the welding assembly 112. During the welding process, under the action of the third motor 243, the first gear 244 is driven to rotate. At the same time, under the action of the second gear 251, the fixing plate 25 is driven to rotate, thereby driving the metal pipe to rotate, making it more convenient to weld the metal pipe and improving the welding efficiency.

[0035] Embodiment 3. According to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, a chute 211 is opened at the top of the bottom plate 21. An installation table 212 is movably embedded on the inner surface of the chute 211. A first motor 213 is fixedly installed on the top of the installation table 212. A grinding wheel 214 is fixedly sleeved on the output end of the first motor 213. A telescopic rod 215 is fixedly inserted into the inner surface of the bottom plate 21, and the telescopic end of the telescopic rod 215 is fixedly connected to the outer wall side of the installation table 212. The top of the workbench 11 is fixedly connected to the bottom of the bottom plate 21. The inner surfaces of the two pipe rotary connectors 253 are fixedly connected to the outer surfaces of the first connecting pipe 123 and the second connecting pipe 137.

[0036] In this embodiment, after the metal pipe is fixed, under the action of the telescopic rod 215, the mounting table 212 is pushed to move towards one end inside the sliding groove 211, and the first motor 213 and the grinding wheel 214 are driven to move to appropriate positions, so that the surface of the grinding wheel 214 is in contact with the surface of the metal pipe. Subsequently, the first motor 213 drives the grinding wheel 214 to rotate, thereby grinding the welded part of the metal pipe. At the same time, under the action of structures such as the third motor 243, the first gear 244, and the second gear 251, the fixed disk 25 and the metal pipe are driven to rotate, so that the welded part of the metal pipe can be fully ground, greatly improving the welding quality of the metal pipe and preventing the metal pipe from being easily damaged during subsequent use.

[0037] The working principle of the whole mechanism is as follows: When it is necessary to use the welding device to weld the metal pipeline, first, the metal pipeline needs to be fixed. Under the operation of the staff, the metal pipeline is inserted into the inside of the fixing plate 25. And under the action of the sealing ring 28, the sealing performance of the metal pipeline port can be improved. Then, under the action of the fourth motor 27, the driving wheel 271 rotates. At the same time, under the action of the annular gear 265, the meshing wheel 264 can be driven to rotate. Through the rotation of the meshing wheel 264, the movable column 261 can be driven to move inside the insertion groove 26, and the fixing plate 262 is driven to move towards the middle, so as to squeeze and fix the metal pipeline in the fixing plate 25. At the same time, under the action of the anti-slip pad 263, the metal pipeline can be fully fixed to avoid displacement during the subsequent processing and improve the processing effect. After the metal pipeline is fixed, under the action of the second motor 23, the bidirectional lead screw 241 rotates, so that the movable frame 242 moves towards the middle inside the movable groove 24, and drives the metal pipeline to move to a suitable position, making the cross-sections of the metal pipelines in contact. Then, under the action of the telescopic rod 215, the mounting table 212 is pushed to move towards one end inside the sliding groove 211, and the first motor 213 and the grinding wheel 214 are driven to move to a suitable position, making the surface of the grinding wheel 214 in contact with the surface of the metal pipeline. Then, the first motor 213 drives the grinding wheel 214 to rotate, so as to grind the welding part of the metal pipeline. And under the action of the third motor 243, the first gear 244 rotates. At the same time, under the action of the second gear 251, the fixing plate 25 and the metal pipeline are driven to rotate. Due to the frictional force generated by the extrusion of the cross-sections of the two metal pipelines, the two metal pipelines can rotate synchronously, so that the welding treatment of the metal pipeline can be fully ground. After the grinding process is completed, the metal pipeline can be welded under the mutual cooperation of the welding assembly 112, the third motor 243, the first gear 244, the second gear 251 and the fixing plate 25. During the welding process, when it is necessary to cool the metal pipeline, under the action of the air delivery pump 138 and the second connecting pipe 137, external air enters the cooling box 13 from the air inlet groove 131. And under the action of the guide plate 132, the air can move slowly inside the cooling box 13. At the same time, under the action of the circulating pump 135, the cooling water inside the cooling pipe 134 can circulate and absorb the heat of the air. After the cooling water absorbs the heat, it is transported to the inside of the cooling device 136. Through the fan and the semiconductor heat dissipation device inside the cooling device 136, the cooling water can be cooled, so that the cooling water can continuously cool the air inside the cooling box 13 for a long time. Subsequently, under the action of the air delivery pump 138 and the second connecting pipe 137, the cooled air is transported into the metal pipeline during welding. Through the continuous movement of the cold air, the heat generated by the metal pipeline during welding can be absorbed and recovered from the first connecting pipe 123.During the recycling process, when the heat-absorbing air is conveyed into the interior of the heat conduction pipe 122, through the cooperation of the fan 126 and the ventilation groove 121, the air inside the mounting frame 12 can flow faster, and with the cooperation of the heat dissipation fins 124, the air inside the heat conduction pipe 122 can be cooled. Subsequently, the air enters the cooling box 13, enabling it to be recycled, thereby achieving the cooling treatment of the metal pipeline and avoiding the shrinkage deformation caused by heat accumulation between the metal pipeline layers.

[0038] The pipeline rotary connector 253 is a connecting device that can enable the continuous transmission of fluids or gases in a pipeline system during rotational motion. It is widely used in fields such as machinery, energy, chemical engineering, and aerospace. The pipeline rotary connector 253 allows pipelines or equipment to maintain the continuous transmission of fluids or gases during rotation through its internal precise mechanical structures (such as bearings, seals, etc.). Its core lies in the sealing design (mechanical seal, packing seal, magnetic fluid seal) to ensure that the medium does not leak during the dynamic rotation process and can withstand working conditions such as system pressure, temperature, and rotational speed.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for a metal pipe, characterized in that: It comprises a cooling mechanism (1), wherein a fixing mechanism (2) is arranged on the top of the cooling mechanism (1); The cooling mechanism (1) comprises a workbench (11), a mounting frame (12) is fixedly mounted on the bottom of the inner wall of the workbench (11), a plurality of ventilation slots (121) are provided on the outer wall of the mounting frame (12), a heat conducting pipe (122) is arranged on the inner wall of the mounting frame (12), the outer wall of the heat conducting pipe (122) is fixedly connected to a first connecting pipe (123), a heat dissipation fin (124) is fixedly mounted on the bottom of the inner wall of the mounting frame (12), and the inner wall of the heat dissipation fin (124) is connected to the outer wall of the heat conducting pipe (122). The inner wall of the mounting frame (12) is fixedly connected to the outer wall of the mounting frame (12); two mounting plates (125) are fixedly mounted between the inner wall of the mounting frame (12); two fans (126) are fixedly mounted on one side of the outer wall of each of the two mounting plates (125); a cooling box (13) is fixedly mounted on the bottom of the inner wall of the workbench (11); one side of the outer wall of the cooling box (13) is fixedly connected to the outer wall of the heat conducting pipe (122); one side of the outer wall of the cooling box (13) is provided with an air inlet groove (131); and a plurality of guide plates (132) are fixedly mounted on the inner wall of the cooling box (13).

2. A metal pipe welding device according to claim 1, characterized in that: A top plate (133) is fixedly mounted on the top of the cooling box (13); a cooling pipe (134) is provided at the bottom of the inner wall of the cooling box (13); a circulating pump (135) is fixedly mounted on the top of the top plate (133); and the outer wall of the circulating pump (135) is fixedly connected to the outer wall of the cooling pipe (134).

3. A metal pipe welding device according to claim 2, characterized in that: A cooling device (136) is fixedly installed on the top of the top plate (133), and the outer wall of the cooling device (136) is fixedly connected to the outer wall of the cooling pipe (134); a second connecting pipe (137) is fixedly connected to one side of the outer wall of the cooling box (13); an air pump (138) is fixedly installed on the bottom of the inner wall of the workbench (11), and the outer wall of the air pump (138) is fixedly connected to the outer wall of the second connecting pipe (137); and a welding assembly (112) is fixedly installed on the top of the workbench (11).

4. A metal pipe welding device according to claim 3, characterized in that: The fixing mechanism (2) comprises a bottom plate (21), two support plates (22) are fixedly mounted on the top of the bottom plate (21), a second motor (23) is fixedly mounted on one side of the outer wall of the bottom plate (21), two movable grooves (24) are provided on the top of the bottom plate (21), a bidirectional screw rod (241) is movably inserted between the inner walls of the two movable grooves (24), and the outer wall of the bidirectional screw rod (241) is fixedly connected to the output end of the second motor (23), two movable frames (242) are movably embedded in the inner walls of the two movable grooves (24), and the inner wall of the movable frame (242) is connected to the outer wall of the bidirectional screw rod (241) by threads, a third motor (243) is fixedly mounted on one side of the outer wall of one of the two movable frames (242), and a first gear (244) is fixedly sleeved on the output end of the third motor (243).

5. A metal pipe welding device according to claim 4, characterized in that: The inner surfaces of the two movable frames (242) are both provided with fixed disks (25), the outer surface wall of one of the two fixed disks (25) is fixedly sleeved with a second gear (251), and the inner surfaces of the two fixed disks (25) are both fixedly inserted with air delivery pipes (252).

6. A metal pipe welding device according to claim 5, characterized in that: The inner walls of the two gas transmission pipes (252) are each provided with a pipeline rotary connector (253); the outer walls of the two fixed plates (25) are each provided with three insertion grooves (26); the inner walls of the three insertion grooves (26) are each provided with a movable column (261) that is movably inserted; the outer walls of the three movable columns (261) are each fixedly mounted with a fixing plate (262); and the outer walls of the three fixing plates (262) are each fixedly mounted with an anti-slip pad (263).

7. A metal pipe welding device according to claim 6, characterized in that: The inner surface walls of the two fixed plates (25) are each provided with three meshing wheels (264), and the outer surface walls of the meshing wheels (264) mesh with the outer surface wall of the movable column (261). The inner surface walls of the two fixed plates (25) are each provided with a ring gear (265), and the inner surface wall of the ring gear (265) meshes with the outer surface wall of the meshing wheels (264).

8. A metal pipe welding device according to claim 7, characterized in that: A fourth motor (27) is fixedly mounted on the outer walls of the two fixed disks (25); a transmission wheel (271) is fixedly sleeved on the output end of the fourth motor (27); and the outer wall of the transmission wheel (271) is meshed with the outer wall of the ring gear (265); and two sealing rings (28) are provided on the inner walls of the two fixed disks (25).

9. A metal pipe welding device according to claim 8, characterized in that: A slide groove (211) is provided on the top of the bottom plate (21), a mounting platform (212) is movably embedded in the inner surface wall of the slide groove (211), a first motor (213) is fixedly installed on the top of the mounting platform (212), a grinding wheel (214) is fixedly sleeved on the output end of the first motor (213), a telescopic rod (215) is fixedly inserted into the inner surface wall of the bottom plate (21), and the telescopic end of the telescopic rod (215) is fixedly connected to one side of the outer wall of the mounting platform (212).

10. A metal pipe welding device according to claim 9, characterized in that: The top of the workbench (11) is fixedly connected to the bottom of the base plate (21), and the inner walls of the two pipeline rotary connectors (253) are fixedly connected to the outer walls of the first connecting pipe (123) and the second connecting pipe (137).

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