Automatic plasma arc welding machine for metal materials

Abstract

The invention discloses a metal material automatic plasma arc welding machine, and relates to the technical field of plasma arc welding, the metal material automatic plasma arc welding machine comprises a placing plate and a base, the inner sides of the two ends of the base are rotatably connected with supporting rollers, a ventilation mechanism comprises an outer cylinder and an inner pipe body, and one end of the outer cylinder is provided with an electrifying mechanism; the two pipelines can be fixed into a whole through the arranged fixing mechanism, it can be guaranteed that the fixing mechanism does not slip relative to the pipelines, it is guaranteed that the two pipelines can rotate synchronously, the influence of torsion on the welding seam quality is reduced, meanwhile, when a welding gun conducts welding inside the pipelines, the fixing mechanism has the intelligent self-adaptive adjusting function, and the welding quality is improved. According to the position and the working state of the welding gun, the positions of parts of the fixing mechanism can be flexibly adjusted, it can be guaranteed that the parts of the fixing mechanism cannot collide with the welding gun when rotating, therefore, normal work of the welding gun is guaranteed, meanwhile, it can be guaranteed that the welding gun can conduct welding on the outer side and the inner side of a pipeline, and the applicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plasma arc welding, and in particular to an automatic plasma arc welding machine for metal materials. Background Art

[0002] Plasma arc welding machine is a welding machine that uses plasma arc to melt metal for non-melting electrode or melting electrode welding. Plasma arc is a high-temperature gas flow generated by ionized ion gas, which is ejected from the nozzle hole and compressed to form a slender arc column. The high energy density beam is used to weld plates, etc. The plasma arc welding machine is mainly composed of a welding gun, a nozzle, a control circuit, a gas circuit system, and a cooling system. The welding workpiece is transported to the work platform through a conveying device, and its welding point is placed under the nozzle of the welding gun by adjusting the positioning component. The rear end of the welding gun is connected to the gas circuit output end, and the plasma arc is ejected through the nozzle at the front end of the welding gun, and then the welding workpiece is welded.

[0003] In the current pipeline welding process, two pipelines to be welded are often placed on a power roller, and the rotation of the power roller drives the pipelines to rotate synchronously, so as to perform welding operations on the joints of adjacent pipelines. However, in actual operation, the pipelines are prone to slipping when the power roller drives them to rotate, which in turn causes the problem of asynchronous rotation, seriously affecting the welding quality.

[0004] There are two main reasons for the slipping phenomenon: First, the driving force of the power roller on the pipeline is insufficient. When the friction provided by the power roller is less than the various resistances generated during the welding process, such as the arc force during welding and the inertial resistance of the pipeline itself, slipping will occur; second, the surface condition of the power roller is not good. If the surface is worn or contaminated with oil, the friction coefficient will be reduced, which will also cause slipping problems. In addition, the inconsistency of friction between multiple power rollers and pipelines, as well as the difference in the degree of slippage of power rollers at different positions, will cause deviations in the speed of the pipeline driven by the power rollers at various positions, and ultimately cause asynchronous rotation.

[0005] Once the two pipes rotate out of sync, the weld will be subjected to torsion, which may cause geometric defects such as dislocation, unevenness, and deformation in the weld, and may also cause internal defects such as pores and cracks, resulting in poor surface quality of the weld, seriously affecting the welding quality and greatly reducing the welding efficiency. In view of this, this process is difficult to meet the pipeline welding needs with strict requirements on welding quality. Therefore, it is urgent to develop an automatic plasma arc welding machine for metal materials to effectively solve the above problems and improve the quality and efficiency of pipeline welding. Summary of the invention

[0006] The object of the present invention is to provide an automatic plasma arc welding machine for metal materials to solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The cam is provided with a plurality of support members, each of which is provided with a plurality of support members, and the plurality of support members have the plurality of support members, each of which is provided with a plurality of support members.

[0009] Preferably, the ventilation mechanism includes an outer cylinder fixedly connected to the bottom plate, the inner side of the outer cylinder is rotatably connected with a first partition frame and a second partition frame, the outer sides of the first partition frame and the second partition frame are fixedly connected with bearings and shaft seals fixedly connected to the outer cylinder, a first air chamber is formed between the first partition frame and the second partition frame, and a second air chamber is formed between the second partition frame and the outer cylinder, the inner side of the first partition frame is fixedly connected with an outer tube body with one end in a blocked state, and the open end of the outer tube body is connected to the first air chamber, the inner side of the second partition frame is fixedly connected with an inner tube body with one end in a blocked state, and the open end of the inner tube body is connected to the second air chamber, the inner tube body passes between the outer tube bodies and is fixedly connected to the outer tube body, the top of the outer cylinder is respectively fixedly connected with a second ventilation pipe and a first ventilation pipe connected to the first air chamber and the second air chamber, and the inner side of the outer cylinder is fixedly connected with a rotating component.

[0010] Preferably, the rotating assembly includes a fixing plate fixedly connected to the outer cylinder body, and the fixing plate is rotatably connected to the outer tube body, one end of the fixing plate is fixedly connected to a first motor, the end of the main shaft of the first motor is fixedly connected to a gear, one end of the gear is meshed with a gear ring, and the gear ring is fixedly connected to the outer tube body.

[0011] One end of the fixing plate is fixedly connected to a fixing ring, the inner side of the fixing ring is fixedly connected to two first conductive rings spaced apart, one end of the two first conductive rings is slidably connected to a first conductive block, one end of the first conductive block is fixedly connected to a connecting ring, and the connecting ring is fixedly connected to the outer tube body.

[0012] Preferably, the fixing mechanism includes a sixth cylinder fixedly connected to the inner tube body, the fixing mechanism includes a transition shell, and the end and the outer side of the sixth cylinder are fixedly connected to the transition shell, the outer side of the transition shell is slidably connected to a sleeve, the four sides of the sleeve are fixedly connected to a first support plate, one end of the first support plate is fixedly connected to a fine-tuning component, one end of the fine-tuning component is rotatably connected to a first slider, the inner side of the first slider is slidably connected to a guide column fixedly connected to the transition shell, one end of the first slider is fixedly connected to a side plate, one end of the side plate is fixedly connected to a support column, and the other end of the support column is fixedly connected to an arc plate;

[0013] A first negative pressure suction cup is fixedly connected to the central position of the arc plate, a third cylinder fixedly connected to the arc plate is symmetrically arranged about the center line of the first negative pressure suction cup, one end of the third cylinder is fixedly connected to a connecting seat, one end of the connecting seat is fixedly connected to the second negative pressure suction cup, one end of the transition shell is fixedly connected to a second support plate, one end of the second support plate is fixedly connected to the first cylinder, and the first cylinder is fixedly connected to the corresponding first support plate.

[0014] Preferably, the fine-tuning assembly includes a second cylinder fixedly connected to the first support plate, the other end of the second cylinder is rotatably connected to a push plate, and the push plate is rotatably connected to the first sliding block.

[0015] Preferably, the power-on mechanism includes an annular guide rail fixedly connected to the outer cylinder, a second conductive ring is fixedly connected to the inner side of the annular guide rail, a second slider is slidably connected to the outer side of the annular guide rail, one end of the second slider is fixedly connected to a telescopic rod, the other end of the telescopic rod is fixedly connected to a transition frame arranged in a "U" shape, one end of the transition frame is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a clamping frame, one end of the clamping frame is spirally connected to the inner side of a bolt, one end of the bolt is rotatably connected to a conductive plate, one end of the second slider is fixedly connected to a second conductive block, and the second conductive block is rotatably connected to the second conductive ring.

[0016] Preferably, a guide roller is provided between the second slider and the annular guide rail, and the guide roller is rotatably connected to the second slider.

[0017] Preferably, the supporting mechanism includes a second motor fixedly connected to the outer cylinder, the end of the main shaft of the second motor is fixedly connected to the first turntable, one end of the first turntable is fixedly connected to the fourth cylinder, the bottom end of the fourth cylinder is fixedly connected to a limit frame, the inner side of the limit frame is slidably connected to an adjusting rod, one end of the adjusting rod is fixedly connected to the second turntable, the outer side of the second turntable is rotatably connected to a second fixing ring, and the second fixing ring is fixedly connected to the welding gun, the outer side of the first turntable is rotatably connected to a first fixing ring, and the first fixing ring is fixedly connected to the outer cylinder.

[0018] Preferably, a first locking screw is spirally connected to the inner side of one end of the first fixing ring, and the first locking screw is fitted with the first turntable, a second locking screw is spirally connected to the inner side of one end of the limit frame, and the second locking screw is fitted with the adjusting rod, and a third locking screw is spirally connected to the inner side of one end of the second fixing ring, and the third locking screw is fitted with the second turntable.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. An automatic plasma arc welding machine for metal materials can fix two pipes into a whole through a fixed mechanism, and can ensure that the fixed mechanism will not slip with the pipes, ensure that the two pipes can rotate synchronously, and reduce the influence of torque on the quality of the weld. At the same time, when the welding gun is welding inside the pipe, the fixed mechanism has an intelligent adaptive adjustment function, and can flexibly adjust the position of its own parts according to the position and working state of the welding gun, so as to ensure that the parts of the fixed mechanism will not collide with the welding gun when rotating, thereby ensuring the normal operation of the welding gun, and at the same time, it can also ensure that the welding gun can weld on both the outside and the inside of the pipe, thereby improving the applicability of the device.

[0021] 2. An automatic plasma arc welding machine for metal materials can ensure that the gas-using parts inside the fixing mechanism will not cause the gas pipes connected to the gas-using parts to be entangled when using gas, thereby ensuring normal ventilation and avoiding interruption or blockage of gas supply due to entanglement. At the same time, it is ensured that the gas pipe will not be damaged due to entanglement, and at the same time, it is ensured that the gas pipe will not be worn, fatigued, fractured, and other problems, thereby increasing the service life of the pipeline.

[0022] 3. An automatic plasma arc welding machine for metal materials, through the setting of a power-on mechanism, can ensure that when the pipeline is energized, the wires will not be entangled due to the rotation of the pipeline under the cooperation of the power-on mechanism and the ventilation mechanism. At the same time, it can ensure that the wires will not be worn, fatigued, fractured, or have poor contact, thereby improving the service life of the wires and greatly enhancing the safety and stability of the circuit system.

[0023] 4. An automatic plasma arc welding machine for metal materials can adjust the welding position of a welding gun through a supporting mechanism so that the welding gun can be used for welding both on the outside and inside of a pipe, thereby improving the applicability of the device.

[0024] In summary, the automatic plasma arc welding machine for metal materials ensures the synchronous rotation of the pipeline, improves the welding quality, ensures the stable operation of the gas and power supply systems, increases the operating range of the welding gun, and improves the applicability of the device through the setting of the fixing mechanism, ventilation mechanism, power-on mechanism and supporting mechanism. The various mechanisms cooperate with each other to jointly build an efficient, reliable and multifunctional welding platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Figure 1 The present invention is a schematic diagram of the overall structure of an automatic plasma arc welding machine for metal materials.

[0027] Figure 2 The present invention is a schematic diagram of the installation structure of a welding gun of an automatic plasma arc welding machine for metal materials.

[0028] Figure 3 The present invention is a schematic structural diagram of a ventilation mechanism of an automatic plasma arc welding machine for metal materials.

[0029] Figure 4 The invention provides an automatic plasma arc welding machine for metal materials. Figure 3 Schematic diagram of the structure at point A.

[0030] Figure 5 The invention provides an automatic plasma arc welding machine for metal materials. Figure 3 Schematic diagram of the structure at point B.

[0031] Figure 6 The present invention is a schematic structural diagram of a fixing mechanism of an automatic plasma arc welding machine for metal materials.

[0032] Figure 7 The present invention is a schematic diagram of the installation structure of the third cylinder of an automatic plasma arc welding machine for metal materials.

[0033] Figure 8 The present invention is a schematic diagram of the installation structure of an adjusting rod of an automatic plasma arc welding machine for metal materials sleeved in a groove of a transition frame.

[0034] Fig. 9 The present invention is a schematic diagram of the installation structure of a transition frame of an automatic plasma arc welding machine for metal materials.

[0035] Fig.10The present invention is a schematic diagram of the installation structure of a base plate of an automatic plasma arc welding machine for metal materials.

[0036] In the figure: 1. ventilation mechanism; 101. outer cylinder; 102. fixing plate; 103. first partition frame; 104. second partition frame; 105. bearing; 106. shaft seal; 107. first ventilation pipe; 108. second ventilation pipe; 109. outer tube body; 110. inner tube body; 111. first motor; 112. gear; 113. gear ring; 114. first air chamber; 115. second air chamber; 116. connecting ring; 117. fixing ring; 118. first conductive ring; 119. first conductive block.

[0037] 2. Fixing mechanism; 201. Transition shell; 202. Sleeve; 203. First support plate; 204. Second support plate; 205. First cylinder; 206. Second cylinder; 207. Push plate; 208. First slider; 209. Guide column; 210. Side plate; 211. Support column; 212. Arc plate; 213. First negative pressure suction cup; 214. Third cylinder; 215. Connecting seat; 216. Second negative pressure suction cup; 217. Sixth cylinder.

[0038] 3. Power supply mechanism; 301. Annular guide rail; 302. First conductive ring; 303. Second slider; 304. Guide roller; 305. Second conductive block; 306. Telescopic rod; 307. Transition frame; 308. Connecting rod; 309. Clamping frame; 310. Bolt; 311. Conductive plate;

[0039] 4. Support mechanism; 401. Second motor; 402. First fixing ring; 403. First rotating disk; 404. First locking screw; 405. Fourth cylinder; 406. Limiting frame; 407. Second locking screw; 408. Adjusting rod; 409. Second rotating disk; 410. Second fixing ring; 411. Third locking screw;

[0040] 5. Welding gun; 6. Base; 7. Support roller; 8. Placement plate; 9. Universal wheel; 10. Fixed bracket; 11. Controller; 12. Fifth cylinder; 13. Guide shaft; 14. Bottom plate. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for illustrative descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention is further explained below in conjunction with specific implementation methods.

[0043] Example

[0044] like Figure 1-Figure 10As shown, an automatic plasma arc welding machine for metal materials includes a placement plate 8 and a base 6. A universal wheel 9 is provided at the bottom end of the placement plate 8, and the universal wheel 9 is used to facilitate the placement plate 8 to be moved to a suitable position. The top of the placement plate 8 is fixedly connected to a fixing frame 10, and the inner side of the fixing frame 10 is slidably connected to a guide shaft 13 fixedly connected to the placement plate 8. The other end of the guide shaft 13 is fixedly connected to a bottom plate 14. The guide shaft 13 plays a supporting and guiding role to ensure the stability of the bottom plate 14 when it moves in the vertical direction. The top of the bottom plate 14 is fixedly connected to a ventilation mechanism 1, and the bottom end of the bottom plate 14 is fixedly connected to a fifth cylinder 12 fixedly connected to the placement plate 8. The fifth cylinder 12 can carry the ventilation mechanism 1 and the fixing mechanism 2 through the bottom plate 14. It moves in the vertical direction so that the fixing mechanism 2 can support and fix pipes of different diameters, thereby improving the applicability of the device. The top of the placement plate 8 is slidably connected to the base 6, and the inner sides of both ends of the base 6 are rotatably connected to support rollers 7. The middle of the base 6 bulges upward, so that the placement plate 8 is convenient for passing through the bottom of the base 6, and the pipeline is placed on the support rollers 7 when welding the pipeline, and the pipeline rotates when welding. The ventilation mechanism 1 includes an outer cylinder 101 and an inner tube body 110. One end of the outer cylinder 101 is provided with a power supply mechanism 3, one end of the inner tube body 110 is provided with a fixing mechanism 2, one end of the outer cylinder 101 is provided with a supporting mechanism 4, one end of the supporting mechanism 4 is fixedly connected to a welding gun 5, and one end of the fixing frame 10 is fixedly connected to a controller 11.

[0045] As a further improvement of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the ventilation mechanism 1 includes an outer cylinder 101 fixedly connected to the bottom plate 14, the inner side of the outer cylinder 101 is rotatably connected to the first partition frame 103 and the second partition frame 104, the outer sides of the first partition frame 103 and the second partition frame 104 are fixedly connected to the bearing 105 and the shaft seal 106 fixedly connected to the outer cylinder 101, a first air chamber 114 is formed between the first partition frame 103 and the second partition frame 104, and a second air chamber 115 is formed between the second partition frame 104 and the outer cylinder 101, and the shaft seal 106 plays a sealing role to ensure that the gas does not flow from the first partition frame 103 to the second partition frame 104. The air in the first air chamber 114 flows out of the gap between the partition frame 103, the second partition frame 104 and the outer cylinder 101, while ensuring that the work between the first air chamber 114 and the second air chamber 115 does not affect each other, ensuring the normal ventilation of each. The inner side of the first partition frame 103 is fixedly connected to an outer tube body 109 with one end in a blocked state, and the open end of the outer tube body 109 is communicated with the first air chamber 114. The inner side of the second partition frame 104 is fixedly connected to an inner tube body 110 with one end in a blocked state, and the open end of the inner tube body 110 is communicated with the second air chamber 115. The inner tube body 110 flows from the outer tube body 109 to the second air chamber 115. The outer tube body 109 passes through and is fixedly connected to the outer tube body 109. The end of the outer tube body 109 is provided with an air pipe joint, and the first cylinder 205, the second cylinder 206, the third cylinder 214, the sixth cylinder 217 and the fifth cylinder 12 are connected to the air pipe joint of the outer tube body 109 through the air pipe and the electromagnetic valve adapted to the air pipe. At the same time, the first negative pressure suction cup 213 and the second negative pressure suction cup 216 are connected to the air pipe joint of the inner tube body 110 through the air pipe and the electromagnetic valve adapted to the air pipe, and each electromagnetic valve can work independently. The top of the outer cylinder body 101 is respectively fixed A second ventilation pipe 108 and a first ventilation pipe 107 that are connected to the first air chamber 114 and the second air chamber 115 are fixedly connected. The first ventilation pipe 107 and the second ventilation pipe 108 are both connected to an external air source, so that the external air source ventilates the second air chamber 115 and the first air chamber 114 through the first ventilation pipe 107 and the second ventilation pipe 108, and the second air chamber 115 is a negative pressure chamber, so that the second air chamber 115 provides negative pressure to the first negative pressure suction cup 213 and the second negative pressure suction cup 216 through the inner tube body 110, and a rotating component is fixedly connected to the inner side of the outer cylinder body 101.

[0046] As a further improvement of the present invention, Figure 3As shown, the rotating assembly includes a fixing plate 102 fixedly connected to the outer cylinder 101, and the fixing plate 102 is rotatably connected to the outer tube 109, one end of the fixing plate 102 is fixedly connected to a first motor 111, the main shaft end of the first motor 111 is fixedly connected to a gear 112, one end of the gear 112 is meshed with a gear ring 113, and the gear ring 113 is fixedly connected to the outer tube 109, the first negative pressure suction cup 213 and the second negative pressure suction cup 216 are tightly adsorbed together with the inner wall of the pipeline by the negative pressure provided by the inner tube 110, ensuring that the two tubes are The pipeline will not be displaced or slipped during the welding process, and the first motor 111 can rotate with the gear ring 113 through the gear 112, and then the gear ring 113 rotates with the outer tube body 109 and the inner tube body 110, and the inner tube body 110 will rotate with the pipeline through the sixth cylinder 217, sleeve 202, transition shell 201, guide column 209, first slider 208, side plate 210, support column 211, arc plate 212, third cylinder 214, connecting seat 215, first negative pressure suction cup 213 and second negative pressure suction cup 216.

[0047] A fixing ring 117 is fixedly connected to one end of the fixing plate 102, and two first conductive rings 118 are fixedly connected to the inner side of the fixing ring 117 and are spaced apart. One end of the two first conductive rings 118 is slidably connected to a first conductive block 119, and one end of the first conductive block 119 is fixedly connected to a connecting ring 116, and the connecting ring 116 is fixedly connected to the outer tube body 109. The first conductive ring 118 and the first conductive block 119 are made of copper or other wear-resistant conductive materials. The outer tube body 109 rotates along the first conductive ring 118 with the first conductive block 119 through the connecting ring 116, and normal power is ensured between the first conductive ring 118 and the first conductive block 119 during the rotation, and the first conductive block 119 can supply power to the solenoid valve, thereby ensuring that the solenoid valve will not be entangled with the wire when the outer tube body 109 rotates.

[0048] As a further improvement of the present invention, Figure 6 and Figure 7 As shown, the fixing mechanism 2 includes a sixth cylinder 217 fixedly connected to the inner tube body 110, the fixing mechanism 2 includes a transition shell 201, and the end and the outer side of the sixth cylinder 217 are fixedly connected to the transition shell 201, the outer side of the transition shell 201 is slidably connected to the sleeve 202, the four sides of the sleeve 202 are fixedly connected to the first support plate 203, one end of the first support plate 203 is fixedly connected to the fine-tuning component, one end of the fine-tuning component is rotatably connected to the first slider 208, the inner side of the first slider 208 is slidably connected to the guide column 209 fixedly connected to the transition shell 201, one end of the first slider 208 is fixedly connected to the side plate 210, one end of the side plate 210 is fixedly connected to the support column 211, and the other end of the support column 211 is fixedly connected to the arc plate 212;

[0049] A first negative pressure suction cup 213 is fixedly connected to the central position of the arc plate 212, and a third cylinder 214 fixedly connected to the arc plate 212 is symmetrically arranged about the center line of the first negative pressure suction cup 213, one end of the third cylinder 214 is fixedly connected to a connecting seat 215, and one end of the connecting seat 215 is fixedly connected to a second negative pressure suction cup 216. The movable arrangement between the second negative pressure suction cup 216 and the connecting seat 215 can be automatically adjusted according to the curvature of the pipeline, so that the second negative pressure suction cup 216 can better fit the pipeline, thereby ensuring the strength of negative pressure adsorption. A second support plate 204 is fixedly connected to one end of the transition shell 201, and a first cylinder 205 is fixedly connected to one end of the second support plate 204, and the first cylinder 205 is fixedly connected to the corresponding first support plate 203. When the first negative pressure suction cup 213 and the second negative pressure suction cup 216 need to be negatively pressure adsorbed together with the pipeline, the first cylinder 205 is firstly passed through the corresponding The corresponding first support plate 203 carries the sleeve 202 to slide along the transition shell 201, so that the sleeve 202 moves along the guide column 209 toward the inner wall of the pipe through the first support plate 203, the second cylinder 206 and the push plate 207 with the first slider 208. At the same time, the first slider 208 will gradually be negatively adsorbed with the inner wall of the pipe through the side plate 210, the support column 211, the arc plate 212, the third cylinder 214 and the connecting seat 215 with the first negative pressure suction cup 213 and the second negative pressure suction cup 216. Under negative pressure adsorption, it can be ensured that the pipe will not slip with the first negative pressure suction cup 213 and the second negative pressure suction cup 216. When adjacent pipes are adsorbed with the corresponding first negative pressure suction cup 213 and the second negative pressure suction cup 216, the two pipes can form a whole, ensure the synchronous rotation between the two pipes, and reduce the influence of torsion on the quality of the weld.

[0050] As a further improvement of the present invention, Figure 6 As shown, the fine-tuning assembly includes a second cylinder 206 fixedly connected to the first support plate 203, and the other end of the second cylinder 206 is rotatably connected to a push plate 207, and the push plate 207 is rotatably connected to the first slider 208. When the welding gun 5 and the adjusting rod 408 are working on the inner side of the pipeline, when the adjusting rod 408 moves to one side of the first negative pressure suction cup 213 and the second negative pressure suction cup 216, in order to ensure that the first negative pressure suction cup 213 and the second negative pressure suction cup 216 can pass through the adjusting rod 408, the first negative pressure suction cup 213 and the second negative pressure suction cup 216 can pass through the adjusting rod 408. The section rod 409 allows the corresponding second cylinder 206 to temporarily separate the first negative pressure suction cup 213 and the second negative pressure suction cup 216 from the pipeline through the push plate 207, the first slider 208, the side plate 210, the support column 211, the arc plate 212, the third cylinder 214 and the connecting seat 215, so that the adjusting rod 408 can pass through the gap between the first negative pressure suction cup 213 and the second negative pressure suction cup 216 and the pipeline, thereby ensuring that the welding gun 5 can carry out welding work normally in the pipeline.

[0051] As a further improvement of the present invention, Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the power-on mechanism 3 includes an annular guide rail 301 fixedly connected to the outer cylinder 101, a second conductive ring 302 is fixedly connected to the inner side of the annular guide rail 301, a second slider 303 is slidably connected to the outer side of the annular guide rail 301, and a telescopic rod 306 is fixedly connected to one end of the second slider 303. The telescopic rod 306 is adjustable. The position of the conductive plate 311 can be adjusted according to the diameter of the pipeline through the telescopic rod 306, so that the conductive plate 311 can be clamped together with pipelines of different diameters. The other end of the telescopic rod 306 is fixedly connected to a transition frame 307 in a "U" shape. The "U"-shaped transition frame 307 can provide compensation for the movement of the adjustment rod 408 and the welding gun 5. When the welding gun 5 performs welding work on the inner side of the pipeline, the adjustment rod 408 is firstly sleeved in the groove of the transition frame 307, so as to ensure that the welding gun 5 can completely weld a circle of the pipeline. One end of the transition frame 307 is fixedly connected to a connecting rod 308. One end is fixedly connected with a clamping frame 309, and a bolt 310 is spirally connected to the inner side of one end of the clamping frame 309. One end of the bolt 310 is rotatably connected with a conductive plate 311. One end of the second slider 303 is fixedly connected with a second conductive block 305, and the second conductive block 305 is rotatably connected with the second conductive ring 302. The second conductive block 305, the second conductive ring 302 and the conductive plate 311 can be made of copper or other wear-resistant conductive materials. The conductive plate 311 is connected with the second conductive block 305 through a wire. When the outer tube body 109 rotates, under the mutual cooperation of the second conductive block 305 and the second conductive ring 302, it can be ensured that the conductive plate 311 normally energizes the pipeline, and at the same time, it can be ensured that the wire between the conductive plate 311 and the second conductive block 305 will not be affected by the rotation and will not be entangled and damaged, thereby improving the service life of the wire, and under the mutual cooperation of the bolt 310 and the clamping frame 309, the conductive plate 311 can be tightly clamped with the edge of the pipeline.

[0052] As a further improvement of the present invention, Figure 4 As shown, a guide roller 304 is provided between the second slider 303 and the annular guide rail 301 , and the guide roller 304 is rotatably connected to the second slider 303 . The guide roller 304 can reduce the friction between the second slider 303 and the annular guide rail 301 , so that the second slider 303 can quickly rotate on the outside of the guide roller 304 .

[0053] As a further improvement of the present invention, Figure 1 , Figure 2 and Figure 8As shown, the supporting mechanism 4 includes a second motor 401 fixedly connected to the outer cylinder 101, a first rotary disk 403 is fixedly connected to the end of the main shaft of the second motor 401, a fourth cylinder 405 is fixedly connected to one end of the first rotary disk 403, a limit frame 406 is fixedly connected to the bottom end of the fourth cylinder 405, an adjusting rod 408 is slidably connected to the inner side of the limit frame 406, a second rotary disk 409 is fixedly connected to one end of the adjusting rod 408, a second fixing ring 410 is rotatably connected to the outer side of the second rotary disk 409, and the second fixing ring 410 is fixedly connected to the welding gun 5, and the position of the welding gun 5 can be adjusted by the mutual rotation between the second rotary disk 409 and the second fixing ring 410, so that when the welding gun 5 is used for welding on the inside of the pipeline, the welding port of the welding gun 5 is in the same direction as the opening of the transition frame 307, so as to ensure that the welding gun 5 can completely weld the pipeline in one circle when it is used for welding on the inside of the pipeline. For welding, the outer side of the first rotating disk 403 is rotatably connected with the first fixing ring 402, and the first fixing ring 402 is fixedly connected to the outer cylinder 101; the fourth cylinder 405 can adjust the position of the welding gun 5 through the limit frame 406, the adjusting rod 408, the second rotating disk 409 and the second fixing ring 410, so that the welding gun 5 can weld pipes of different diameters, and through the mutual adjustment between the adjusting rod 408 and the limit frame 406, the use requirements of welds in different positions can be met, thereby improving the applicability of the present device, and the second motor 401 can adjust the position of the welding gun 5 through the first rotating disk 403, the fourth cylinder 405, the limit frame 406, the adjusting rod 408, the second rotating disk 409 and the second fixing ring 410, so that the welding gun 5 can weld the pipe from the outside of the pipe, and can also weld the pipe from the inside of the pipe, thereby improving the applicability of the present device.

[0054] As a further improvement of the present invention, Figure 8 As shown, a first locking screw 404 is spirally connected to the inner side of one end of the first fixing ring 402, and the first locking screw 404 is fitted with the first rotating disk 403, and the first locking screw 404 can be used to achieve the limiting fixation between the first rotating disk 403 and the first fixing ring 402, a second locking screw 407 is spirally connected to the inner side of one end of the limiting frame 406, and the second locking screw 407 is fitted with the adjusting rod 408, and the second locking screw 407 can be used to achieve the limiting fixation between the limiting frame 406 and the adjusting rod 408, a third locking screw 411 is spirally connected to the inner side of one end of the second fixing ring 410, and the third locking screw 411 is fitted with the second rotating disk 409, and the third locking screw 411 can be used to achieve the limiting fixation between the second rotating disk 409 and the second fixing ring 410.

[0055] In summary, the automatic plasma arc welding machine for metal materials ensures the synchronous rotation of the pipeline, improves the welding quality, ensures the stable operation of the gas and power supply systems, increases the operating range of the welding gun 5, and improves the applicability of the device through the setting of the fixing mechanism 2, the ventilation mechanism 1, the power-on mechanism 3 and the supporting mechanism 4. Moreover, the various mechanisms cooperate with each other to jointly build an efficient, reliable and multifunctional welding platform.

[0056] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the protection scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic plasma arc welding machine for metal materials, comprising a placement plate (8) and a base (6), characterized in that: The bottom end of the placement plate (8) is provided with a universal wheel (9), the top end of the placement plate (8) is fixedly connected to a fixing frame (10), the inner side of the fixing frame (10) is slidably connected to a guide shaft (13) fixedly connected to the placement plate (8), the other end of the guide shaft (13) is fixedly connected to a bottom plate (14), the top end of the bottom plate (14) is fixedly connected to a ventilation mechanism (1), the bottom end of the bottom plate (14) is fixedly connected to a fifth cylinder (12) fixedly connected to the placement plate (8), the top end of the placement plate (8 ... fifth cylinder (12) fixedly connected to the placement plate (8), the top end of the placement plate (8) is slidably connected to a guide shaft (13) fixedly connected to the placement plate (8), the other end of the guide shaft (13) is fixedly connected to a bottom plate (14), the top end of the bottom plate (14) is fixedly connected to a fifth cylinder (12) fixedly connected to the placement plate (8), the top end of the placement plate (8) is slidably connected to a guide shaft (13) fixedly connected to the placement plate (8), the other end of the guide shaft (13) is fixedly connected to a bottom plate (14), the top end The ventilating mechanism (1) comprises an outer cylinder (101) and an inner tube (110); one end of the outer cylinder (101) is provided with a power supply mechanism (3); one end of the inner tube (110) is provided with a fixing mechanism (2); one end of the outer cylinder (101) is provided with a supporting mechanism (4); one end of the supporting mechanism (4) is fixedly connected to a welding gun (5); and one end of the fixing frame (10) is fixedly connected to a controller (11).

2. The automatic plasma arc welding machine for metal materials according to claim 1, characterized in that: The ventilation mechanism (1) comprises an outer cylinder (101) fixedly connected to a bottom plate (14); a first partition frame (103) and a second partition frame (104) are rotatably connected to the inner side of the outer cylinder (101); the outer sides of the first partition frame (103) and the second partition frame (104) are fixedly connected to a bearing (105) and a shaft seal (106) fixedly connected to the outer cylinder (101); a first air chamber (114) is formed between the first partition frame (103) and the second partition frame (104); a second air chamber (115) is formed between the second partition frame (104) and the outer cylinder (101); the inner side of the first partition frame (103) is fixedly connected to a first end of the first partition frame (103) and a second air chamber (116) is formed between the second partition frame (104) and the outer cylinder (101); An outer tube body (109) in a blocked state, and the open end of the outer tube body (109) is connected to the first air chamber (114); an inner tube body (110) whose end is in a blocked state is fixedly connected to the inner side of the second partition frame (104), and the open end of the inner tube body (110) is connected to the second air chamber (115); the inner tube body (110) passes through the outer tube bodies (109) and is fixedly connected to the outer tube body (109); the top end of the outer cylinder (101) is respectively fixedly connected to the second ventilation pipe (108) and the first ventilation pipe (107) which are connected to the first air chamber (114) and the second air chamber (115); and the inner side of the outer cylinder (101) is fixedly connected to a rotating component.

3. The automatic plasma arc welding machine for metal materials according to claim 2, characterized in that: The rotating assembly comprises a fixing plate (102) fixedly connected to the outer cylinder (101), and the fixing plate (102) is rotatably connected to the outer tube (109), one end of the fixing plate (102) is fixedly connected to a first motor (111), a main shaft end of the first motor (111) is fixedly connected to a gear (112), one end of the gear (112) is meshed with a gear ring (113), and the gear ring (113) is fixedly connected to the outer tube (109).

4. The automatic plasma arc welding machine for metal materials according to claim 2, characterized in that: One end of the fixing plate (102) is fixedly connected to a fixing ring (117), the inner side of the fixing ring (117) is fixedly connected to two first conductive rings (118) arranged at intervals, one end of the two first conductive rings (118) is slidably connected to a conductive block (119), one end of the conductive block (119) is fixedly connected to a connecting ring (116), and the connecting ring (116) is fixedly connected to the outer tube body (109).

5. The automatic plasma arc welding machine for metal materials according to claim 1, characterized in that: The fixing mechanism (2) comprises a sixth cylinder (217) fixedly connected to the inner tube body (110), the fixing mechanism (2) comprises a transition shell (201), and the end and the outer side of the sixth cylinder (217) are fixedly connected to the transition shell (201), the outer side of the transition shell (201) is slidably connected to a sleeve (202), the four sides of the sleeve (202) are fixedly connected to a first support plate (203), one end of the first support plate (203) is fixedly connected to a fine adjustment component, one end of the fine adjustment component is rotatably connected to a first slider (208), the inner side of the first slider (208) is slidably connected to a guide column (209) fixedly connected to the transition shell (201), one end of the first slider (208) is fixedly connected to a side plate (210), one end of the side plate (210) is fixedly connected to a support column (211), and the other end of the support column (211) is fixedly connected to an arc plate (212); A first negative pressure suction cup (213) is fixedly connected to the central position of the arc plate (212); a third cylinder (214) fixedly connected to the arc plate (212) is symmetrically arranged about the center line of the first negative pressure suction cup (213); one end of the third cylinder (214) is fixedly connected to a connecting seat (215); one end of the connecting seat (215) is fixedly connected to a second negative pressure suction cup (216); one end of the transition shell (201) is fixedly connected to a second support plate (204); one end of the second support plate (204) is fixedly connected to a first cylinder (205); and the first cylinder (205) is fixedly connected to the corresponding first support plate (203).

6. The automatic plasma arc welding machine for metal materials according to claim 5, characterized in that: The fine-tuning assembly comprises a second cylinder (206) fixedly connected to the first support plate (203); the other end of the second cylinder (206) is rotatably connected to a push plate (207), and the push plate (207) is rotatably connected to the first slider (208).

7. The automatic plasma arc welding machine for metal materials according to claim 1, characterized in that: The power supply mechanism (3) comprises an annular guide rail (301) fixedly connected to the outer cylinder (101); a second conductive ring (302) is fixedly connected to the inner side of the annular guide rail (301); a second slider (303) is slidably connected to the outer side of the annular guide rail (301); one end of the second slider (303) is fixedly connected to a telescopic rod (306); the other end of the telescopic rod (306) is fixedly connected to a transition frame (307) arranged in a "U" shape; One end of the bridge frame (307) is fixedly connected to a connecting rod (308), one end of the connecting rod (308) is fixedly connected to a clamping frame (309), one end of the clamping frame (309) is spirally connected to a bolt (310) on the inner side, one end of the bolt (310) is rotatably connected to a conductive plate (311), one end of the second slider (303) is fixedly connected to a second conductive block (305), and the second conductive block (305) is rotatably connected to a second conductive ring (302).

8. The automatic plasma arc welding machine for metal materials according to claim 7, characterized in that: A guide roller (304) is provided between the second slider (303) and the annular guide rail (301), and the guide roller (304) is rotatably connected to the second slider (303).

9. The automatic plasma arc welding machine for metal materials according to claim 1, characterized in that: The support mechanism (4) comprises a second motor (401) fixedly connected to the outer cylinder (101); the first rotating disk (403) is fixedly connected to the end of the main shaft of the second motor (401); one end of the first rotating disk (403) is fixedly connected to the fourth cylinder (405); the bottom end of the fourth cylinder (405) is fixedly connected to a limit frame (406); the inner side of the limit frame (406) is slidably connected to an adjusting rod (408); one end of the adjusting rod (408) is fixedly connected to the second rotating disk (409); the outer side of the second rotating disk (409) is rotatably connected to a second fixing ring (410), and the second fixing ring (410) is fixedly connected to the welding gun (5); the outer side of the first rotating disk (403) is rotatably connected to a first fixing ring (402), and the first fixing ring (402) is fixedly connected to the outer cylinder (101).

10. The automatic plasma arc welding machine for metal materials according to claim 8, characterized in that: A first locking screw (404) is spirally connected to the inner side of one end of the first fixing ring (402), and the first locking screw (404) is fitted with the first rotating disk (403); a second locking screw (407) is spirally connected to the inner side of one end of the limiting frame (406), and the second locking screw (407) is fitted with the adjusting rod (408); a third locking screw (411) is spirally connected to the inner side of one end of the second fixing ring (410), and the third locking screw (411) is fitted with the second rotating disk (409).

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