A plasma arc welding machine for fin tube production

Abstract

The present invention relates to the technical field of welding machines, and specifically to a plasma arc welding machine for fin tube production, comprising a welding frame, a welding bearing ring frame being installed on the welding bearing ring frame, a base tube support assembly being provided on the welding bearing ring frame, and a rectangular base tube being supported by welding through the base tube support assembly, and a base tube surface auxiliary cleaning assembly being installed at one end of the welding bearing ring frame, and the rectangular base tube being assisted in cleaning by reciprocating motion of the base tube surface auxiliary cleaning assembly, the rectangular base tube being placed between two tube end baffles, its position being adjusted, and then a hydraulic rod being started to drive the cleaning carrier plate to reciprocate, thereby driving a cleaning bar to reciprocate, and the cleaning bar being in contact with the rectangular base tube during the reciprocating motion, so that the rectangular base tube can be preliminarily cleaned under the action of the cleaning bar, thereby reducing the cleaning burden of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, in particular to a plasma arc welding machine for producing fin tubes. Background Art

[0002] Finned tubes are a type of high-efficiency heat exchange element widely used in industrial and civilian fields. Their core feature is that by adding fins to the base tube, the heat exchange area is significantly increased, thereby improving heat transfer efficiency.

[0003] Rectangular finned tubes can provide a larger heat exchange surface area in specific applications and are suitable for scenarios that require high heat exchange efficiency. When producing rectangular finned tubes, a plasma arc welding machine is required to weld the fins to the rectangular base tube. Before welding, workers are often required to clean the surface of the rectangular base tube to ensure its cleanliness for smooth welding. Existing plasma arc welding machines are unable to perform auxiliary cleaning on the rectangular base tube to reduce the cleaning burden of the workers. When fixing the rectangular base tube, manual clamp operation is required, and the process is relatively cumbersome, resulting in low fixing efficiency and inconvenient operation. Summary of the Invention

[0004] The object of the present invention is to provide a plasma arc welding machine for fin tube production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A plasma arc welding machine for fin tube production includes a welding frame, a welding support ring frame is mounted on the welding frame, a base tube support assembly is provided on the welding support ring frame, and a rectangular base tube is supported by the base tube support assembly;

[0007] A base pipe surface auxiliary cleaning component is installed at one end of the welding support ring frame, and the base pipe surface auxiliary cleaning component performs reciprocating motion to assist in cleaning the rectangular base pipe;

[0008] The other end of the welding support ring is also equipped with a convenient base pipe fixing mechanism, which fixes the rectangular base pipe to ensure its stability during the welding process.

[0009] The auxiliary cleaning component on the surface of the base pipe acts on the convenient fixing mechanism of the base pipe to drive it to move, thereby fixing the rectangular base pipe.

[0010] Preferably, the base pipe supporting assembly is a pipe body support bar, and there are two pipe body support bars. A pipe end baffle is fixedly provided on the pipe body support bars, and a pipe body support bar is fixedly provided between the pipe body support bars.

[0011] Preferably, a movable cavity is provided on the tube body support bar, and the tube end baffles are in contact with both ends of the rectangular base tube to limit the position thereof.

[0012] Preferably, the base pipe surface auxiliary cleaning assembly includes a hydraulic rod, a cleaning carrier plate, a matching support bar, a cleaning bar and a matching locking plate. The hydraulic rod is fixedly mounted on one end of the welding support ring frame, and the cleaning carrier plate is fixedly mounted on the hydraulic rod.

[0013] Preferably, two matching support bars are symmetrically mounted on the cleaning carrier plate, and cleaning bars are mounted on the matching support bars. The cleaning carrier plate drives the matching support bars to move back and forth to clean the rectangular base tube.

[0014] Preferably, when the cleaning strip cleans the rectangular base tube, the two mating support strips are in contact with each other.

[0015] Preferably, the matching lock plate is installed on the cleaning carrier plate, and when the cleaning strip cleans the rectangular base tube, the matching lock plate locks the matching support strip.

[0016] Preferably, the base pipe convenient fixing mechanism includes a connecting strip, a clamping strip and a hollow movable strip, and the connecting strip is installed on the other end of the welded bearing ring frame opposite to the hydraulic rod.

[0017] Preferably, the connecting carrier strips are movably connected to clamping carrier strips, and the clamping carrier strips clamp and fix the rectangular base tube from both sides.

[0018] Preferably, the hollow movable bar is movably connected to the serial plate strip, and the cleaning carrier drives the hollow movable bar to move, thereby driving the serial plate strip to move. The serial plate strip cooperates with the movable cavity to form negative pressure to adsorb and fix the rectangular base tube.

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

[0020] 1. Place the rectangular base pipe between the two pipe end baffles, adjust its position, and then start the hydraulic rod to drive the cleaning carrier to move back and forth, which can then drive the cleaning bar to move back and forth. The cleaning bar is in contact with the rectangular base pipe during the reciprocating movement. In this way, the rectangular base pipe can be preliminarily cleaned under the action of the cleaning bar, reducing the cleaning burden of the staff.

[0021] 2. After the rectangular base tube is cleaned, the hydraulic rod drives the cleaning carrier to move so that the cleaning strip on the cleaning carrier passes over the rectangular base tube. Under the action of the inclined carrier, the matching lock plate moves upward to unlock the matching support strip. In this way, under the action of the first connecting spring, the two matching support strips will move back to each other. At the same time, the mounting block contacts the hollow movable strip. Under the action of the mounting block, the hollow movable strip is driven to move, and then the serial plate strip is driven to move. As the serial plate strip moves, negative pressure can be formed in the movable cavity under the action of the movable block to achieve adsorption and fixation of the rectangular base tube.

[0022] 3. In addition, the movement of the continuous strips will also drive the clamping strips to move, so that the interference matching plate can clamp and fix the rectangular base tube from both sides, ensuring the stability of the rectangular base tube during the welding process. The separation state of the matching strips facilitates its reset movement after the fins are welded on the rectangular base tube. The contact cleaning between the cleaning strips and the rectangular base tube can also keep the rectangular base tube in the correct position, so that it is accurately positioned and can be smoothly fixed without manual fixing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A first-person perspective diagram of the welded frame assembly.

[0024] Figure 2 A second-view diagram of the welded frame assembly.

[0025] Figure 3 Schematic diagram of the first perspective of the welded load ring assembly.

[0026] Figure 4 A second perspective diagram of the welded load ring assembly.

[0027] Figure 5 It is a structural diagram of the welded load-bearing ring frame.

[0028] Figure 6 Schematic diagram of the structure for cleaning the carrier board.

[0029] Figure 7 Exploded first-person perspective diagram of the support and cleaning bar assembly.

[0030] Figure 8 Exploded diagram from a second perspective showing the assembly of the support and cleaning strips.

[0031] Figure 9 A first-person perspective diagram of the clean carrier assembly.

[0032] Figure 10 A second perspective diagram of the clean carrier assembly.

[0033] Figure 11This is a schematic diagram of the assembly of connecting slats, clamping load bars and hollow movable bars.

[0034] Figure: 1, welding frame; 11, welding bearing ring frame; 12, ring frame protrusion; 13, hydraulic rod; 14, pipe body support bar; 141, pipe end baffle; 142, stabilizing guide plate; 143, stabilizing guide hole; 15, pipe body support bar; 16, movable cavity; 17, protruding vertical plate; 171, movable support hole; 18, inclined load bar; 19, support block; 191, support guide hole; 2, cleaning load plate; 21, cleaning load rod; 22, rectangular channel; 23, mounting load block; 24, movable guide hole; 25, first magnet ring; 26, limiting guide groove; 3, matching support bar; 31, stable insertion channel; 32, expansion channel; 33, second magnet ring; 34, movable Dynamic load rod; 35, matching end plate; 36, first connecting spring; 37, limit guide strip; 38, locking groove; 4, cleaning strip; 41, stabilizing load strip; 42, expansion strip; 5, matching locking plate; 51, rectangular plug rod; 52, mounting base; 53, supporting wheel; 54, locking strip; 6, serial load strip; 61, supporting guide rod; 62, upper top block; 63, second connecting spring; 64, load-bearing protrusion; 65, load-bearing moving rod; 66, movable plug block; 67, connecting protrusion strip; 68, clamping pull rod; 7, clamping load strip; 71, clamping support rod; 72, contact matching plate; 8, hollow movable strip; 81, moving support rod; 82, push-down connecting rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] The present invention provides a technical solution:

[0037] like Figure 1 and Figure 2 As shown, a plasma arc welding machine for fin tube production includes a welding frame 1, a welding bearing ring frame 11 is installed on the welding frame 1, and a base tube support assembly is provided on the welding bearing ring frame 11. The rectangular base tube is supported by the base tube support assembly for welding, and a base tube surface auxiliary cleaning assembly is installed at one end of the welding bearing ring frame 11. The rectangular base tube is assisted to be cleaned by reciprocating motion of the base tube surface auxiliary cleaning assembly. A convenient base tube fixing mechanism is also installed at the other end of the welding bearing ring frame 11. The rectangular base tube is fixed by the convenient base tube fixing mechanism to ensure its stability during the welding process. The auxiliary base tube surface cleaning mechanism acts on the convenient base tube fixing mechanism to drive it to move, thereby fixing the rectangular base tube.

[0038] like Figure 1 and Figure 5 As shown, the base pipe support assembly is a pipe body support bar 14, which has two pipe body support bars 14. A pipe end baffle 141 is fixedly provided on the pipe body support bar 14, and a pipe body support bar 15 is fixedly provided between the pipe body support bars 14. A movable cavity 16 is provided on the pipe body support bar 15. The pipe end baffle 141 contacts the two ends of the rectangular base pipe to limit its position. One end of the welding support ring frame 11 is fixedly provided with a ring frame protrusion 12, and a stabilizing guide plate 142 is symmetrically fixed on the pipe body support bar 14. A stabilizing guide hole 143 is provided on the stabilizing guide plate 142. A protruding vertical plate 17 and an inclined support bar 18 are symmetrically fixed on the other end of the welding support ring frame 11. A movable bearing hole 171 is provided on the protruding vertical plate 17. The surface of the inclined support bar 18 is smooth and free of burrs. In addition, a support block 19 is symmetrically fixed on the other end of the welding support ring frame 11 opposite to the ring frame protrusion 12. A support guide hole 191 is provided on the support block 19.

[0039] like Figure 3 、 Figure 5 and Figure 6 As shown, the base pipe surface auxiliary cleaning assembly includes a hydraulic rod 13, a cleaning carrier plate 2, a matching support bar 3, a cleaning bar 4 and a matching lock plate 5. The hydraulic rod 13 is fixedly mounted on one end of the welding carrier ring frame 11, and the cleaning carrier plate 2 is fixedly mounted on the hydraulic rod 13, that is, the hydraulic rod 13 is mounted on the ring frame convex plate 12, and a cleaning carrier rod 21 is symmetrically fixedly arranged on the cleaning carrier plate 2, and a rectangular channel 22 is provided on the cleaning carrier rod 21, and a mounting block 23 is fixedly provided on the end of the cleaning carrier rod 21, and a movable guide hole 24 is provided on the mounting block 23, and a first magnet ring 25 is embedded in the periphery of one end port of the movable guide hole 24. In addition, a limiting guide groove 26 is further provided on the upper end of the mounting block 23, and the inner wall of the limiting guide groove 26 is smooth and free of burrs.

[0040] like Figure 3 、 Figure 7 、 Figure 8 and Figure 9As shown, two matching support bars 3 are symmetrically installed on the cleaning carrier plate 2, and a cleaning bar 4 is installed on the matching support bar 3. The cleaning carrier plate 2 drives the matching support bar 3 to move back and forth to clean the rectangular base tube. When the cleaning bar 4 cleans the rectangular base tube, the two matching support bars 3 are in contact with each other, and at this time the upper ends of the two cleaning bars 4 are also in contact with each other, a stable insertion channel 31 is provided on the matching support bar 3, and an expansion channel 32 is also provided on the upper side of the stable insertion channel 31, and a second magnet ring 33 is embedded in the lower side of the matching support bar 3. A movable carrier rod 34 is fixed on the matching support bar 3 inside the second magnet ring 33. The movable carrier rod 34 is inserted into the movable guide hole 24, and the movable carrier rod 34 is away from A matching end plate 35 is fixedly provided at one end of the matching support bar 3, and a first connecting spring 36 is sleeved on the movable carrier rod 34. The two ends of the first connecting spring 36 are respectively fixed on the mounting carrier block 23 and the matching end plate 35. In addition, a limiting guide bar 37 is fixedly provided on the matching support bar 3 on the upper side of the movable carrier rod 34. The limiting guide bar 37 is partially inserted in the limiting guide groove 26, and a locking groove 38 is provided on the limiting guide bar 37. A stabilizing carrier bar 41 is fixedly provided on the cleaning bar 4, and an expansion bar 42 is fixedly provided on the upper end of the stabilizing carrier bar 41. When the cleaning bar 4 is installed on the matching support bar 3, the stabilizing carrier bar 41 is inserted in the stabilizing insertion channel 31, and the expansion bar 42 is inserted in the expansion channel 32.

[0041] When the two mating support bars 3 are in contact with each other, the first connecting spring 36 is in a compressed state.

[0042] like Figure 10 As shown, the cooperating lock plate 5 is installed on the cleaning carrier plate 2. When the cleaning strip 4 cleans the rectangular base tube, the cooperating lock plate 5 locks the cooperating support strip 3. A rectangular insertion rod 51 is fixedly provided on the lower side of the cooperating lock plate 5. The rectangular insertion rod 51 is inserted into the rectangular channel 22, and a mounting base 52 is fixedly provided at the lower end of the rectangular insertion rod 51. A supporting wheel 53 is installed on the mounting base 52. A locking strip 54 is also symmetrically fixed on the cooperating lock plate 5. The locking strip 54 is inserted into the locking groove 38 when locking the cooperating support strip 3.

[0043] like Figure 3 and Figure 11As shown, the convenient fixing mechanism of the base pipe includes a connecting strip 6, a clamping strip 7 and a hollow movable strip 8. The connecting strip 6 is installed on the other end of the welding load ring frame 11 opposite to the hydraulic rod 13. The connecting strip 6 is movably connected with the clamping strip 7. The clamping strip 7 clamps and fixes the rectangular base pipe from both sides. The hollow movable strip 8 is movably connected to the connecting strip 6. The cleaning carrier 2 drives the hollow movable strip 8 to move, and then drives the connecting strip 6 to move. The connecting strip 6 and the movable cavity The channel 16 cooperates to form a negative pressure to adsorb and fix the rectangular base tube. A support guide rod 61 is symmetrically fixed on the serial strip 6. The support guide rod 61 is inserted into the support guide hole 191. The upper end of the support guide rod 61 is fixed with an upper top block 62. The upper top block 62 is on the upper side of the support bracket 19, and a second connecting spring 63 is sleeved on the support guide rod 61. The two ends of the second connecting spring 63 are respectively fixed on the upper top block 62 and the support bracket 19. A fixed spring 63 is provided on the middle position of the serial strip 6. A bearing convex strip 64 is provided, and a bearing moving rod 65 is fixedly provided on the bearing convex strip 64. A movable plug 66 is fixedly provided on the upper end of the bearing moving rod 65. The movable plug 66 is inserted into the moving cavity 16 and tightly matched with it. In addition, the two ends of the serial strip 6 are symmetrically fixed with connecting protruding strips 67, and a clamping pull rod 68 is hinged on the connecting protruding strip 67. The upper end of the clamping pull rod 68 is hinged with a clamping carrier strip 7, and a clamping support rod 71 is fixed on the clamping carrier strip 7. The clamping support rod 7 1 is inserted into the stabilizing guide hole 143, and a contact matching plate 72 is fixedly provided on the end of the clamping support rod 71 away from the clamping carrier strip 7. The surface of the contact matching plate 72 is smooth and burr-free. The rectangular base tube is clamped by the contact matching plate 72. A movable support rod 81 is fixedly provided at the upper end of the hollow movable strip 8. The movable support rod 81 is inserted into the movable support hole 171, and a push-down connecting rod 82 is hinged at the lower end of the hollow movable strip 8. The lower end of the push-down connecting rod 82 is hinged to the serial strip 6.

[0044] When welding the rectangular base tube and the fin, the rectangular base tube is placed between the two tube end baffles 141, supported by the tube body support bar 14 and the tube body support bar 15, and then its position is adjusted so that the cleaning strip 4 can be sleeved on the rectangular base tube when moving. After adjusting the position of the rectangular base tube, the hydraulic rod 13 is started to drive the cleaning carrier plate 2 to move in the direction of the rectangular base tube. As the cleaning carrier plate 2 moves, the cleaning strip 4 will be sleeved on the rectangular base tube and contact it. The cleaning carrier plate 2 drives the cleaning strip 4 to move back and forth, so that the welding position of the fin on the rectangular base tube can be repeatedly cleaned. When there are places that are not cleaned, manual cleaning can be performed, which greatly reduces the workload of the staff in cleaning the rectangular base tube. When the rectangular base tube is cleaned, the hydraulic rod 13 drives the cleaning carrier 2 to move, so that the cleaning strip 4 passes over the rectangular base tube and reaches the other end of the welding carrier ring frame 11. During the cleaning process, the cleaning strip 4 can be sleeved on the rectangular base tube and thus limit the rectangular base tube, so that its position is at an accurate point, so that the lower end surface of the rectangular base tube can be tightly fitted at the upper end of the moving cavity 16. When the cleaning strip 4 passes over the rectangular base tube, the supporting wheel 53 will contact the inclined portion of the inclined carrier strip 18. Under the action of the inclined carrier strip 18, the supporting wheel 53 will be pushed upward, thereby causing the locking strip 54 on the matching lock plate 5 to exit the locking groove 38, so that the matching support strip 3 can be unlocked. When the first and second coupling springs 36 are engaged, the two coupling bars 3 are moved in opposite directions, and the first and second coupling rings 33 are attracted to each other, which plays a certain fixing role on the coupling bar 3, and prevents the coupling bar 3 from unstable back and forth movement under the elastic force of the first coupling spring 36. When the supporting wheel 53 passes over the inclined portion of the inclined carrier bar 18, the lower end face of the matching lock plate 5 is supported on the limiting guide bar 37. At this time, the mounting block 23 contacts the hollow movable bar 8, and then as the cleaning carrier plate 2 continues to move, the mounting block 23 pushes the hollow movable bar 8 to move in the direction of the protruding vertical plate 17. As the hollow movable bar 8 moves, the connecting rod 82 pushes the connecting bar 6. When the clamping plate 6 is in the state of being pressed down, the clamping plate 68 is pressed against the support rail 66 and the support rail 64 is pressed against the support rail 65. When the clamping plate 6 is in the state of being pressed down, the support rail 66 is pressed against the support rail 66 and the support rail 64 is pressed against the support rail 65. When the clamping plate 6 is in the state of being pressed down, the support rail 66 is pressed against the support rail 66 and the support rail 64 is pressed against the support rail 65.At this time, the two matching support bars 3 are in a separated state, so when the cleaning carrier plate 2 moves in the reverse direction, the cleaning bar 4 will no longer be in contact with the rectangular base tube, so it will not be restricted by the fins, so that it can be smoothly reset. As the cleaning carrier plate 2 moves in the reverse direction, the hollow movable bar 8 will no longer be restricted. In this way, under the action of the second connecting spring 63, the connecting plate 6 will move upward for reset, thereby driving the movable plug 66 to move upward, the negative pressure disappears, and the rectangular fin tube is released. At the same time, under the action of the clamping pull rod 68, the clamping carrier bar 7 will be driven to move away from the rectangular fin tube to achieve reset, so that the rectangular fin tube can be completely released. After the cleaning carrier plate 2 is reset, since the two matching support bars 3 are in a separated state, at this time The cleaning strip 4 is in the unlocked state and can be quickly removed to see if it needs to be replaced. After the cleaning strip 4 is replaced, the mating end plate 35 is pushed to move it in the direction of the mounting block 23, so that the first connecting spring 36 is in a compressed state. At the same time, as the mating support strip 3 moves, the locking groove 38 is aligned with the locking strip 54 on the mating lock plate 5. In this way, under the action of the weight of the mating lock plate 5 itself, the locking strip 54 is inserted into the locking groove 38, locking the mating support strip 3 so that the two mating support strips 3 can be stably contacted together, preparing for the cleaning of the next rectangular base tube. On the one hand, this device can reduce the cleaning intensity of the staff, and on the other hand, it can conveniently fix the rectangular base tube without excessive manual operation, which is very convenient.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plasma arc welding machine for fin tube production, comprising a welding frame, a welding support ring frame mounted on the welding frame, characterized in that: The welding supporting ring frame is provided with a base pipe support assembly, and the rectangular base pipe is supported by the base pipe support assembly; The base pipe support assembly is a pipe body support bar, and there are two pipe body support bars, on which pipe end baffles are fixedly provided, and between which pipe body support bars a pipe body support bar is fixedly provided, and a movable cavity is provided on the pipe body support bar, and symmetrically fixed on the pipe body support bar are stabilizing guide plates, and the stabilizing guide plates are provided with stabilizing guide holes; A base pipe surface auxiliary cleaning component is installed at one end of the welding support ring frame, and the base pipe surface auxiliary cleaning component performs reciprocating motion to assist in cleaning the rectangular base pipe; The base pipe surface auxiliary cleaning assembly includes a hydraulic rod, a cleaning carrier plate, a matching support bar, a cleaning bar and a matching lock plate. The hydraulic rod is fixedly mounted on one end of the welding support ring frame, and the cleaning carrier plate is fixedly mounted on the hydraulic rod. Two matching support bars are symmetrically mounted on the cleaning carrier, and cleaning bars are mounted on the matching support bars. The cleaning carrier drives the matching support bars to move back and forth to clean the rectangular base tube. The matching lock plate is mounted on the cleaning carrier plate, and when the cleaning strip cleans the rectangular base tube, the matching lock plate locks the matching support strip; The other end of the welding support ring is also equipped with a convenient base pipe fixing mechanism, which fixes the rectangular base pipe to ensure its stability during the welding process. The base pipe convenient fixing mechanism includes a connecting strip, a clamping strip and a hollow movable strip, wherein the connecting strip is installed on the other end of the welded load ring frame opposite to the hydraulic rod; The other end of the welding load-bearing ring frame is symmetrically fixed with a protruding vertical plate, and a movable bearing hole is opened on the protruding vertical plate. The end of the welding load-bearing ring frame on which the protruding vertical plate is provided is also symmetrically fixed with a support block, and a support guide hole is opened on the support block; A supporting guide rod is symmetrically fixed on the serial strip, and the supporting guide rod is inserted into the supporting guide hole. An upper top block is fixed on the upper end of the supporting guide rod, and the upper top block is located on the upper side of the supporting support block. A second connecting spring is sleeved on the supporting guide rod, and the two ends of the second connecting spring are respectively fixed on the upper top block and the supporting support block; A load-bearing convex strip is fixedly provided at the middle position of the serial strip, a load-bearing movable rod is fixedly provided on the load-bearing convex strip, a movable plug is fixedly provided on the upper end of the load-bearing movable rod, the movable plug is plugged into the movable cavity and tightly matched therewith, and connecting protruding strips are symmetrically fixedly provided at both ends of the serial strip, a clamping pull rod is hinged on the connecting protruding strip, and a clamping load strip is hinged on the upper end of the clamping pull rod; A clamping rod is fixedly provided on the clamping carrier bar, and the clamping rod is inserted into the stabilizing guide hole. An interference plate is fixedly provided on the end of the clamping rod away from the clamping carrier bar. The surface of the interference plate is smooth and free of burrs, and the rectangular base tube is clamped by the interference plate. The cleaning carrier plate drives the hollow movable bar to move. The upper end of the hollow movable bar is fixedly provided with a movable support rod, which is inserted into the movable bearing hole. The lower end of the hollow movable bar is hinged with a push-down connecting rod, and the lower end of the push-down connecting rod is hinged with the serial plate. The auxiliary cleaning component on the surface of the base pipe acts on the convenient fixing mechanism of the base pipe to drive it to move, thereby fixing the rectangular base pipe.

2. The plasma arc welding machine for fin tube production according to claim 1, characterized in that: The tube body support strip is provided with a movable cavity, and the tube end baffles contact the two ends of the rectangular base tube to limit the position thereof.

3. The plasma arc welding machine for fin tube production according to claim 2, characterized in that: When the cleaning strip cleans the rectangular base tube, the two matching support strips come into contact with each other.

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