Stainless steel pipe circulating welding equipment

Abstract

The application belongs to the technical field of welding equipment, and particularly relates to a stainless steel pipe circulating welding equipment, which comprises a base frame, the upper surface of the base frame is provided with a welding structure, the welding structure comprises a welding power supply, one end of the welding power supply is provided with a welding head, the welding power supply is used for controlling the welding head, one end of the base frame close to the welding structure on the upper surface is provided with an adjusting structure, one end of the adjusting structure is provided with a conveying structure, and the conveying structure comprises a conveying roller. When the pipe is welded, the rotating frame can drive the fixed pipe to rotate, the overall welding of the pipe is realized, after the welding is completed, the transfer frame will drive the welded pipe to move upwards, after moving a distance, the transfer frame will automatically rotate, and the pipe on the surface of the transfer frame is transferred to one side, and then the two pipes to be welded are continuously transferred to the area to be welded through the conveying of the conveying frame, so that the circulating work is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding equipment, in particular to a stainless steel pipe circulating welding equipment. BACKGROUND

[0002] The stainless steel pipe belongs to a kind of pipe fittings, which is made of stainless steel material, and is widely used in petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and other industries, such as mechanical structure components, and is often used as furniture and kitchenware, etc.

[0003] A patent application with publication number CN118616883B discloses a stainless steel pipe welding equipment, which comprises a storage box, a supporting plate slidingly connected to the inner upper end of the storage box, a fixing frame installed on the upper end of the supporting plate, and a semicircular limiting frame fixedly connected to the upper end of the fixing frame, wherein the inner wall of the semicircular limiting frame is uniformly rotatably connected with a plurality of ball bearings.

[0004] The above-mentioned scheme still has some problems in actual application. When the above-mentioned welding device is used to weld the stainless steel pipes, the end faces of two stainless steel pipes are first butted and fixed, and then the welded stainless steel pipes are taken out after welding, and two stainless steel pipes to be welded are placed for welding. However, the welding work of some stainless steel pipes is continuous, and a large number of stainless steel pipes need to be welded each time. When the above-mentioned device is used to weld the stainless steel pipes, the fixation of the welded stainless steel pipes needs to be released, and then the stainless steel pipes to be welded can be placed. This step is relatively complicated, which makes the switching speed of the stainless steel pipes before and after welding too slow, and the circulating batch welding cannot be realized.

[0005] Therefore, the present application provides a stainless steel pipe circulating welding equipment. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: a stainless steel pipe circulating welding equipment, comprising a base frame, the upper surface of the base frame is provided with a welding structure, the welding structure comprises a welding power supply, one end of the welding power supply is provided with a welding head, and the welding power supply is used for controlling the welding head, both sides of the upper surface of the base frame near the welding structure are provided with adjusting structures, one side of the adjusting structure is provided with a conveying structure, the conveying structure comprises a conveying roller; the adjusting structure comprises: adjusting frames, two adjusting frames are arranged on the upper surface of the base frame; a clamping frame is rotatably connected to the inner wall of the adjusting frame; a gear ring is rotatably connected to the inside of the clamping frame; a plurality of meshing gears are rotatably connected to the inside of the clamping frame, and the meshing gears are engaged with the gear ring; a plurality of clamping plates are slidably connected to the inside of the clamping frame, and the clamping plates are engaged with the meshing gears; a transfer frame is slidably connected to the upper surface of the base frame, and the transfer frame is arranged between the two adjusting frames; an intermittent gear is connected to one side of the transfer frame.

[0008] Preferably, the welding structure further comprises an adjusting arm, the adjusting arm is arranged between the welding power supply and the welding head, and the conveying structure further comprises: a fixed plate arranged on the upper surface of the base frame; a conveying frame arranged on the upper end of the fixed plate, and the conveying roller is arranged in the inside of the conveying frame; a conveying groove is formed in the surface of the conveying frame; the adjusting structure further comprises: a rotating frame rotatably connected to the inside of the adjusting frame, and the rotating frame is connected with the clamping frame; a sliding shaft is arranged on one side of the upper surface of the base frame near the transfer frame; a sliding block is slidably connected to the surface of the sliding shaft, and the intermittent gear is rotatably connected to the surface of the sliding block; a fixed tooth plate is arranged on one side of the sliding shaft, and the intermittent gear is engaged with the fixed tooth plate when working.

[0009] Preferably, the inside of the clamping frame is provided with a plurality of sliding rods, and the clamping plate slides on the surface of the sliding rod.

[0010] Preferably, the surface of the clamping plate is provided with a plurality of anti-skid pads.

[0011] Preferably, the inside of the conveying frame is slidably connected with two sliding frames, and the two sliding frames move towards each other, one of the two sliding frames is rotatably connected with a polishing roller in the inside, and the other sliding frame is rotatably connected with an abutting roller in the inside.

[0012] Preferably, the inside of the conveying frame is rotationally connected with a connecting gear, one end of the sliding frame is connected with a fixed gear plate, and the fixed gear plate is engaged with the connecting gear, and the end of the sliding frame away from the conveying roller is provided with an adjusting spring.

[0013] Preferably, the inside of the adjusting spring is provided with a limiting rod.

[0014] Preferably, the inside of the conveying frame is rotationally connected with a worm, and the worm is engaged with the connecting gear, and the worm is connected with one of the conveying rollers.

[0015] Preferably, the surface of the transfer frame is provided with a liquid outlet, the upper surface of the base frame is provided with a liquid storage frame near the transfer frame, and the liquid storage frame is arranged at the lower end of the transfer frame, the upper end of the liquid storage frame is provided with a plurality of spray ports, and the inside of the liquid storage frame is slidably connected with a pressing piece.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The stainless steel pipe circulating welding equipment, by setting the adjusting structure, when welding the pipe, first, two pipes are transferred to the inside of the clamping frame through the conveying frame, then the gear ring is started to rotate, the clamping plate can be driven to move through the meshing gear, so that the pipe is fixed, then the welding power supply is started, the two pipes can be welded, and during the welding process, the rotating frame is started to rotate, the fixed pipe is driven to rotate, the overall welding of the pipe is realized, then after the welding is completed, the sliding block is started to move upwards, and during the movement, the transfer frame connected with the sliding block drives the welded pipe to move upwards, after a distance, the intermittent gear at one end of the transfer frame is engaged with the fixed gear plate, so that the intermittent gear drives the transfer frame to rotate, and the pipe on the surface of the transfer frame is transferred to the side, and then through the conveying of the conveying frame, the two pipes to be welded can be continuously transferred to the area to be welded, realizing the circulating work.

[0018] 2. The stainless steel pipe circulating welding equipment, by setting the grinding roller and the abutting roller, during the conveying of the pipe by the conveying roller, the two sliding frames are driven to move towards each other by the worm, then the grinding roller and the abutting roller in the two sliding frames are in contact with the welding part of the pipe, the grinding roller grinds the oxide skin on the surface of the pipe, and the abutting roller drives the pipe to rotate, so that the grinding is realized in all directions, and the subsequent welding effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below with reference to the drawings.

[0020] The present application will be further described below with reference to the drawings.Figure 1 is a perspective view of embodiment one of the present application;

[0021] Figure 2 is a front view of embodiment one of the present application;

[0022] Figure 3 is a perspective view of the adjusting frame of the present application;

[0023] Figure 4 is a perspective view of Figure 3 is a partial enlarged view at A in FIG. 1;

[0024] Figure 5 is a position view of the engaging gear of the present application;

[0025] Figure 6 is a position view of Figure 5 is a partial enlarged view at B in FIG. 1;

[0026] Figure 7 is a perspective view of the conveying frame of the present application;

[0027] Figure 8 is an internal view of the conveying frame of the present application;

[0028] Figure 9 is a position view of the polishing roller and the abutting roller of the present application;

[0029] Figure 10 is a connection view of the sliding block and the transfer frame of the present application;

[0030] Figure 11 is a position view of the liquid storage frame and the transfer frame of the present application.

[0031] In the figure: 1, base frame; 2, welding structure; 21, welding joint; 22, adjusting arm; 23, welding power supply; 3, conveying structure; 301, fixed plate; 302, conveying frame; 303, conveying roller; 304, polishing roller; 305, adjusting spring; 306, conveying groove; 307, abutting roller; 308, sliding frame; 309, limiting rod; 310, fixed tooth plate; 311, connecting gear; 312, worm; 4, adjusting structure; 401, adjusting frame; 402, transfer frame; 403, fixed tooth plate; 404, rotating frame; 405, clamping frame; 406, clamping plate; 407, engaging gear; 408, sliding rod; 409, tooth ring; 410, non-slip pad; 411, sliding block; 412, intermittent gear; 413, liquid outlet; 414, sliding shaft; 415, liquid storage frame; 416, extrusion sheet; 417, screw; 418, lifting rod; 419, spout; 5, pipe fitting. DETAILED DESCRIPTION

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] Example 1: As Figures 1 to 11 As shown, an embodiment of the stainless steel pipe circulating welding equipment of the present invention includes a base frame 1, a welding structure 2 on the upper surface of the base frame 1, a welding power source 23, a welding head 21 at one end of the welding power source 23, and the welding power source 23 is used to control the welding head 21. Adjustment structures 4 are provided on both sides of the upper surface of the base frame 1 near the welding structure 2, and a conveying structure 3 is provided on one side of the adjustment structure 4. The conveying structure 3 includes a conveying roller 303. The adjustment structure 4 includes: an adjustment frame 401, two adjustment frames 401 disposed on the upper surface of the base frame 1; a clamping frame 405 rotatably connected to the inner wall of the adjustment frame 401; and a toothed ring 409. A gear ring 409 is rotatably connected inside the clamping frame 405; several meshing gears 407 are rotatably connected inside the clamping frame 405 and mesh with the gear ring 409; several clamping plates 406 are slidably connected inside the clamping frame 405 and mesh with the meshing gears 407; a transfer frame 402 is slidably connected up and down to the upper surface of the base frame 1 and is located between two adjusting frames 401; an intermittent gear 412 is connected to one side of the transfer frame 402, and the rotation of the intermittent gear 412 will drive the transfer frame 402 to rotate together.

[0034] Specifically, the stainless steel pipe circulating welding equipment is used for welding the stainless steel pipe, that is, pipe fittings 5. In use, first, two pipe fittings 5 are placed on the surface of the conveying roller 303, and then the conveying roller 303 is started to drive the two pipe fittings 5 to move towards the end close to each other. Then, when the end surfaces of the two pipe fittings 5 are butted, the gear ring 409 is started to rotate, which will engage with the meshing gear 407 and drive the meshing gear 407 to rotate. The meshing gear 407 will drive the clamping plate 406 to move towards the center of the pipe fitting 5, and finally clamp and fix the pipe fitting 5. At this time, the welding power supply 23 is started to provide current to the welding head 21, forming a continuous electric arc between the welding head 21 and the pipe fitting 5, and then cooling and solidifying to form a dense weld structure, realizing the welding between the two pipe fittings 5. During the welding process, the clamping frame 405 is started to drive the pipe fitting 5 to rotate, thereby realizing the overall welding of the pipe fitting 5. After the welding of the two pipe fittings 5 is completed, the transfer frame 402 is started to move upwards and drive the welded pipe fitting 5 to move upwards together. After moving a distance, the intermittent gear 412 is started to rotate, which will drive the transfer frame 402 to rotate together and transfer the pipe fitting 5 on the surface of the transfer frame 402 to the side. Then, the transfer frame 402 is started again to reset. Since one end of the conveying roller 303 is connected with a conveying belt that continuously conveys the pipe fittings 5, and then the pipe fittings 5 are conveyed again through the conveying roller 303, the two pipe fittings 5 to be welded can be continuously transferred to the area to be welded, realizing the circulating welding work.

[0035] As shown in Figures 1 to 11 The welding structure 2 further comprises an adjusting arm 22 arranged between the welding power supply 23 and the welding head 21. The conveying structure 3 further comprises a fixed plate 301 arranged on the upper surface of the base frame 1, a conveying frame 302 arranged at the upper end of the fixed plate 301, and a conveying roller 303 arranged inside the conveying frame 302. A conveying groove 306 is formed in the surface of the conveying frame 302. The adjusting structure 4 further comprises a rotating frame 404 rotatably connected inside the adjusting frame 401 and connected with the clamping frame 405. A sliding shaft 414 is arranged at one end of the upper surface of the base frame 1 close to the transfer frame 402. A sliding block 411 is slidably connected to the surface of the sliding shaft 414, and an intermittent gear 412 is rotatably connected to the surface of the sliding block 411. A fixed tooth plate 403 is arranged on one side of the sliding shaft 414, and the intermittent gear 412 is engaged with the fixed tooth plate 403 when working.

[0036] Specifically, when welding, first place the pipe 5 in the conveying groove 306 on the surface of the conveying frame 302, then start the conveying roller 303 to rotate to drive the pipe 5 to move, after welding, start the sliding block 411, the sliding block 411 drives the transfer frame 402 to move upwards, and after moving a distance, the intermittent gear 412 engages with the fixed tooth plate 403, then the intermittent gear 412 drives the transfer frame 402 to rotate, thereby transferring the pipe 5 on the surface of the transfer frame 402 to the side.

[0037] As shown in Figures 1 to 6 , the inside of the clamping frame 405 is provided with a plurality of sliding rods 408, and the clamping plate 406 slides on the surface of the sliding rod 408.

[0038] Specifically, by setting the sliding rod 408, the movement direction of the clamping plate 406 can be limited during movement, so as to ensure that the clamping plate 406 moves towards the center of the pipe 5, avoiding affecting the clamping effect.

[0039] As shown in Figures 1 to 4 , the surface of the clamping plate 406 is provided with a plurality of anti-skid pads 410.

[0040] Specifically, by setting a plurality of anti-skid pads 410 on the surface of the clamping plate 406, it can not only ensure that the clamping plate 406 has an anti-skid effect when contacting the pipe 5, so that the fixing effect is better, but also can reduce the wear of the clamping plate 406 and the pipe 5.

[0041] Embodiment two: as shown in Figures 1 to 9 , compared with embodiment one, another embodiment of the present application is that the inside of the conveying frame 302 is slidably connected with two sliding frames 308, and the two sliding frames 308 move towards each other, one of the two sliding frames 308 is rotatably connected with a polishing roller 304, and the other sliding frame 308 is rotatably connected with an abutting roller 307.

[0042] Specifically, when the pipe 5 is placed on the surface of the conveying roller 303 for conveying, start the sliding frame 308, the two sliding frames 308 will move towards each other, and in the process of moving, the polishing roller 304 and the abutting roller 307 will contact the surface of the pipe 5, then start the polishing roller 304 and the abutting roller 307, the polishing roller 304 will polish the oxide skin on the surface of the pipe 5, and the abutting roller 307 will drive the pipe 5 to rotate, thereby realizing all-around polishing and improving the subsequent welding effect.

[0043] As shown in Figures 1 to 9As shown, the inner rotation of the conveying frame 302 is connected with a connecting gear 311, one end of the sliding frame 308 is connected with a fixed gear plate 310, and the fixed gear plate 310 is engaged with the connecting gear 311, and the end of the sliding frame 308 away from the conveying roller 303 is provided with an adjusting spring 305.

[0044] Specifically, when the pipe fitting 5 is placed on the surface of the conveying roller 303 for conveying, the connecting gear 311 is started to rotate, the connecting gear 311 will be engaged with the fixed gear plate 310, thereby driving the fixed gear plate 310 and the sliding frame 308 to move towards the pipe fitting 5, and when the polishing roller 304 and the abutting roller 307 are in contact with the pipe fitting 5, the connecting gear 311 and the fixed gear plate 310 will no longer be engaged, at this time the adjusting spring 305 will pull the fixed gear plate 310 away from the pipe fitting 5, but in the process of pulling, the connecting gear 311 will continue to be engaged with the fixed gear plate 310, which can ensure that the polishing roller 304 and the abutting roller 307 are always in contact with the pipe fitting 5, and the force of the polishing roller 304 and the abutting roller 307 contacting the pipe fitting 5 will not be too large or too small.

[0045] As shown in the figure, Figure 8 The inner part of the adjusting spring 305 is provided with a limiting rod 309.

[0046] Specifically, since the polishing roller 304 and the abutting roller 307 are in contact with the pipe fitting 5, by arranging the limiting rod 309 in the inner part of the adjusting spring 305, the direction of the deformation of the adjusting spring 305 is always horizontal, thereby ensuring that the contact between the polishing roller 304 and the abutting roller 307 and the pipe fitting 5 is more accurate.

[0047] As shown in the figure, Figures 1 to 8 The inner part of the conveying frame 302 is rotationally connected with a worm 312, and the worm 312 is engaged with the connecting gear 311, and the worm 312 is connected with one of the conveying rollers 303.

[0048] Specifically, by arranging the worm 312 to be connected with the conveying roller 303, when the conveying roller 303 conveys the pipe fitting 5, the conveying roller 303 can drive the worm 312 to rotate, and since the worm 312 is engaged with the connecting gear 311, the connecting gear 311 will automatically rotate at this time.

[0049] As shown in the figure, Figure 11 The surface of the transfer frame 402 is provided with a liquid outlet 413, and the upper surface of the base frame 1 is provided with a liquid storage frame 415 near the transfer frame 402, and the liquid storage frame 415 is arranged at the lower end of the transfer frame 402, the upper end of the liquid storage frame 415 is provided with a plurality of spray nozzles 419, and the inner part of the liquid storage frame 415 is slidably connected with a pressing piece 416.

[0050] Specifically, by setting the liquid storage frame 415 at the lower end of the transfer frame 402, before the welding work, the anti-splashing agent is first placed in the liquid storage frame 415, and then after the pipe fitting 5 is clamped and fixed, the extrusion piece 416 is started to move upward, so as to extrude the anti-splashing agent in the liquid storage frame 415 to be sprayed out from the nozzle 419, finally sprayed to the surface of the pipe fitting 5, and in the process of spraying, the clamping frame 405 is started to rotate, so that the pipe fitting 5 can be sprayed by the anti-splashing agent in all directions, and in the subsequent welding work, the attachment of the welding slag can be reduced, and the subsequent cleaning is facilitated.

[0051] As shown in Figure 11 The inside of the liquid storage frame 415 is rotatably connected with a screw rod 417, and the extrusion piece 416 is threadedly connected with the screw rod 417. The inside of the liquid storage frame 415 is provided with a lifting rod 418, and the extrusion piece 416 slides on the surface of the lifting rod 418.

[0052] Specifically, after the pipe fitting 5 is clamped and fixed, the screw rod 417 is started to rotate, since the extrusion piece 416 is threadedly connected with the screw rod 417, and the extrusion piece 416 slides on the surface of the lifting rod 418, so at this time the extrusion piece 416 will move upward, so as to extrude the anti-splashing agent in the liquid storage frame 415 to be sprayed out.

[0053] Working principle: in use, first, the pipe 5 is placed in the conveying frame 302 surface conveying groove 306 inside, then start the conveying roller 303, the conveying roller 303 will drive two pipe 5 to the end of each other close, then in the end face of two pipe 5 butt joint, start gear ring 409 rotation, gear ring 409 in the process of rotation will be engaged with gear 407 and drive gear 407 rotation, gear 407 will drive the clamping plate 406 to the center direction of pipe 5 movement, finally pipe 5 clamping fixed, at this time start welding power supply 23, welding power supply 23 will provide current to the welding head 21, welding head 21 and pipe 5 between the formation of continuous discharge arc, and then cooling solidification, form dense weld structure, realize the welding between two pipe 5, and in the process of welding, start clamping frame 405, clamping frame 405 will drive pipe 5 rotation, so as to realize the comprehensive welding of pipe 5, after the welding of two pipe 5, start the sliding block 411, sliding block 411 will drive the transfer frame 402 to move up, and after moving a distance, intermittent gear 412 will be engaged with fixed gear plate 403, then intermittent gear 412 will drive the transfer frame 402 rotation together, and the pipe 5 on the surface of the transfer frame 402 is transferred to the side, and then start the transfer frame 402 again, so that the transfer frame 402 can be reset, because one end of the conveying roller 303 is connected with the conveying belt which continuously conveys pipe 5, and then the pipe 5 is conveyed by the conveying roller 303 again, so that the two pipe 5 to be welded can be transferred to the area to be welded, realizing the cycle welding work.

[0054] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A stainless steel pipe cycle welding apparatus characterized by: The utility model provides a welding device, including base frame (1), the upper surface of base frame (1) is equipped with welding structure (2), welding structure (2) includes welding power supply (23), one end of welding power supply (23) is equipped with welding head (21), and welding power supply (23) is used for controlling welding head (21), the both sides of the upper surface of base frame (1) near welding structure (2) are equipped with adjusting structure (4), one side of adjusting structure (4) is equipped with conveying structure (3), conveying structure (3) includes conveying roller (303); The adjusting structure (4) comprises: adjusting frame (401), two adjusting frame (401) are arranged on the upper surface of the base frame (1); Clamping frame (405), the inner wall of the adjusting frame (401) is rotatably connected with the clamping frame (405); Gear ring (409), the inner part of the clamping frame (405) is rotatably connected with the gear ring (409); Engaging gear (407), a plurality of engaging gear (407) are rotatably connected in the inner part of the clamping frame (405), and the engaging gear (407) is engaged with the gear ring (409); Clamping plate (406), a plurality of clamping plate (406) are slidably connected in the inner part of the clamping frame (405), and the clamping plate (406) is engaged with the engaging gear (407); Transfer frame (402), the upper surface of the base frame (1) is slidably connected with the transfer frame (402), and the transfer frame (402) is arranged between the two adjusting frame (401); Intermittent gear (412), the intermittent gear (412) is connected to one side of the transfer frame (402), and the intermittent gear (412) rotates to drive the transfer frame (402) to rotate together; The adjusting structure (4) further comprises: Rotating frame (404), the inner part of the adjusting frame (401) is rotatably connected with the rotating frame (404), and the rotating frame (404) is connected with the clamping frame (405); Sliding shaft (414), the upper surface of the base frame (1) is provided with the sliding shaft (414) near one side of the transfer frame (402); Sliding block (411), the surface of the sliding shaft (414) is slidably connected with the sliding block (411), and the intermittent gear (412) is rotatably connected to the surface of the sliding block (411); Fixed tooth plate (403), the fixed tooth plate (403) is arranged on one side of the sliding shaft (414), and the intermittent gear (412) is engaged with the fixed tooth plate (403) when working. The surface of the transfer frame (402) is provided with a liquid outlet (413), the upper surface of the base frame (1) is provided with a liquid storage frame (415) close to the transfer frame (402), and the liquid storage frame (415) is arranged at the lower end of the transfer frame (402), the upper end of the liquid storage frame (415) is provided with a plurality of spray nozzles (419), and the inside of the liquid storage frame (415) is slidably connected with an extrusion piece (416), and the inside of the liquid storage frame (415) is placed with an anti-splashing agent.

2. A stainless steel tube circulating welding apparatus according to claim 1, characterized by: The welding structure (2) further comprises an adjusting arm (22) arranged between the welding power supply (23) and the welding head (21), and the conveying structure (3) further comprises: A fixed plate (301) arranged on the upper surface of the base frame (1); A conveying frame (302) arranged at the upper end of the fixed plate (301), and the conveying roller (303) is arranged inside the conveying frame (302); A conveying groove (306) arranged on the surface of the conveying frame (302).

3. A stainless steel tube circulating welding apparatus according to claim 1, characterized by: The inside of the clamping frame (405) is provided with a plurality of sliding rods (408), and the clamping plate (406) slides on the surface of the sliding rod (408).

4. A stainless steel tube rotary welding apparatus according to claim 3, wherein: The surface of the clamping plate (406) is provided with a plurality of anti-skid pads (410).

5. A stainless steel tube circulating welding apparatus according to claim 2, characterized by: The inside of the conveying frame (302) is slidably connected with two sliding frames (308), and the two sliding frames (308) move towards each other, one of the two sliding frames (308) is rotatably connected with a polishing roller (304), and the other sliding frame (308) is rotatably connected with an abutting roller (307).

6. A stainless steel tube circulating welding apparatus according to claim 5, wherein: The inside of the conveying frame (302) is rotatably connected with a connecting gear (311), one end of the sliding frame (308) is connected with a fixed tooth plate (310), and the fixed tooth plate (310) is engaged with the connecting gear (311), and the end of the sliding frame (308) away from the conveying roller (303) is provided with an adjusting spring (305).

7. A stainless steel tube circulating welding apparatus according to claim 6, characterized by: The inside of the adjusting spring (305) is provided with a limiting rod (309).

8. A stainless steel tube circulating welding apparatus according to claim 6, characterized by: The inside of the conveying frame (302) is rotatably connected with a worm (312), and the worm (312) is engaged with the connecting gear (311), and the worm (312) is connected with one of the plurality of conveying rollers (303).

9. A stainless steel tube circulating welding apparatus according to claim 1, characterized by: The inside of the liquid storage frame (415) is rotatably connected with a screw rod (417), and the extrusion piece (416) is threadedly connected with the screw rod (417), the inside of the liquid storage frame (415) is provided with a lifting rod (418), and the extrusion piece (416) slides on the surface of the lifting rod (418).

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