Pipeline welding machine with automatic butt joint function

Abstract

The invention discloses a pipeline welding machine with an automatic butt joint function, and relates to the technical field of welding machines, the pipeline welding machine comprises a bottom plate, a bracket is fixedly connected to the middle of the top surface of the bottom plate, a control panel is fixedly mounted on the surface of the bracket, and a limiting plate is fixedly connected to the top surface of the bracket; a first pulley is rotationally connected to the limiting plate, the first pulley is attached to the surface of a circular ring, a welding gun is fixedly installed on the circular ring, a limiting ring is fixedly connected to the inner side of the circular ring, a second pulley is attached to the limiting ring, and the second pulley is rotationally connected to one end of the limiting plate. The surface of the circular ring is fixedly connected with a gear ring, and the gear ring is engaged with a gear. The pipeline butt joint device is reasonable in structure, one end of each pipeline can be limited and fixed through the limiting assembly and the driving assembly, and then the two pipelines are subjected to automatic butt joint work through the adjusting assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of welding machines, and particularly relates to a pipeline welding machine with an automatic docking function. Background Art

[0002] The rise of existing new energy vehicles has driven the development of the industries of many automobile parts manufacturers. There are a very large number of types of automobile parts. Among them, there are many pipelines installed on the automobile. When processing the pipelines, a welding machine needs to be used for welding work.

[0003] When performing welding work on pipelines at present, it is necessary to manually place the pipelines on the processing table and then fix the pipelines. However, when fixing the pipelines, it is necessary to manually align the pipelines with each other, and then manually hold the welding machine to weld the docking joints of the pipelines, thereby reducing the welding efficiency of the pipelines. Summary of the Invention

[0004] The purpose of this application is to provide a pipeline welding machine with an automatic docking function, which realizes that the limiting component and the driving component can limit and fix one end of the pipeline, and then automatically dock the two pipelines through the adjusting component.

[0005] To achieve the above purpose, this application provides the following technical solutions: A pipeline welding machine with an automatic docking function, including a bottom plate, a bracket is fixedly connected to the middle position of the top surface of the bottom plate, a control panel is fixedly installed on the surface of the bracket, a limiting plate is fixedly connected to the top surface position of the bracket, a first pulley is rotatably connected to the limiting plate, the first pulley is attached to the surface of a ring, a welding torch is fixedly installed on the ring, a limiting ring is fixedly connected to the inner side of the ring, a second pulley is attached to the limiting ring, the second pulley is rotatably connected to one end of the limiting plate, a toothed ring is fixedly connected to the surface of the ring, a gear is engaged with the toothed ring, the gear is fixedly connected to one end of a driving rod, the other end of the driving rod is fixedly connected to the output end of a first motor, and the first motor is fixedly installed on the bracket; It also includes a limiting component, a driving component and an adjusting component. The limiting component is arranged on the bottom plate for fixing the pipeline, the driving component is arranged on the limiting component for cooperative use, and the adjusting component is arranged on the bottom plate for cooperative use with the pipeline.

[0006] Preferably, the limiting component includes a pair of support plates fixedly installed on the bottom plate, a load-bearing plate is fixedly connected to the top ends of the pair of support plates, a pair of frames are fixedly connected to the load-bearing plate, a fixing plate is fixedly connected between the pair of frames, and a supporting block is fixedly connected to the top end of the fixing plate.

[0007] Preferably, a pair of side plates are fixedly connected to the loading plate. Positioning blocks are fixedly connected to the tops of the pair of side plates. Cross bars are movably inserted at both ends of the positioning blocks. A collar is fixedly connected to one end of each cross bar. Springs are sleeved on the cross bars, and both ends of each spring are fixedly connected to one side of the positioning block and one side of the collar respectively.

[0008] Preferably, the other end of each cross bar is fixedly connected to a frame body. Arc-shaped plates are fixedly connected to both ends of the frame body. Limiting wheels are rotatably connected to the arc-shaped plates.

[0009] Preferably, the driving assembly includes a pair of first shaft seats fixedly installed on the loading plate. A threaded rod is rotatably connected between the pair of first shaft seats. One end of the threaded rod is fixedly connected to the output end of a servo motor. The servo motor is fixedly installed on one of the first shaft seats. The threaded rod is provided with left and right hand threads.

[0010] Preferably, a sleeve block is threadedly connected to the threaded rod. A docking seat is fixedly connected to the top surface of the sleeve block. A linkage plate is rotatably connected to the docking seat. The other end of the linkage plate is rotatably connected to a docking column. One end of the docking column is fixedly connected to an arm plate.

[0011] Preferably, the bottom end of the arm plate is rotatably connected to a hinge seat. The hinge seat is fixedly connected to the loading plate. A chute is formed at the top end of the arm plate. A roller is slidably connected inside the chute. Both ends of the roller are rotatably connected to side seats. The side seats are fixedly connected to the frame body.

[0012] Preferably, the adjusting assembly includes two groups of second shaft seats fixedly installed on the bottom plate. A sliding rod is fixedly connected between the second shaft seats. A sleeve seat is slidably connected to the sliding rod. The top end of the sleeve seat is fixedly connected to a top plate. A connecting block is fixedly connected to the middle position of the top surface of the top plate. A loading platform is fixedly installed on the connecting block. A support is fixedly connected to the top plate. A cylinder is fixedly installed at the middle position of the top surface of the support. The bottom end of the cylinder is fixedly connected to a pressing plate.

[0013] Preferably, a third shaft seat is fixedly connected inside the second shaft seat. A main shaft is rotatably connected to the third shaft seat. A toothed disc is fixedly connected to the middle position of the main shaft. A toothed plate is engaged with the toothed disc. The toothed plate is fixedly connected to the bottom surface position of the top plate.

[0014] Preferably, a first pulley is fixedly connected to the main shaft. A transmission belt is sleeved on the first pulley. The bottom end of the transmission belt is sleeved on a second pulley. The second pulley is fixedly connected to one end of a transmission rod. The other end of the transmission rod is fixedly connected to the output end of a second motor. The second motor is fixedly installed on the bottom plate.

[0015] In summary, the present invention has the following beneficial effects: 1. The structure of the present invention is reasonable. The pipeline is placed on the supporting block, and then the whole frame is moved through the driving component. A cross bar is fixedly connected to the frame, and the cross bar is movably inserted into the positioning block. The movement of the frame makes the cross bar move on the positioning block, and the movement of the positioning block makes the collar squeeze the spring. The movement of the cross bar facilitates the movement of the arc plate on the frame, and the movement of the arc plate facilitates the limiting wheel to fit on the surface of the pipeline for limiting; 2. In the present invention, when the frame needs to be moved, the servo motor operates. The operation of the servo motor facilitates the rotation of the threaded rod. The threaded rod is provided with left and right hand threads, and different threads are threadedly connected with sleeve blocks. The rotation of the threaded rod makes the sleeve blocks move. A docking seat is fixedly connected to the sleeve block, and a linkage plate is rotatably connected to the docking seat. The other end of the linkage plate is rotatably connected to the docking column. The movement of the sleeve block pulls the arm plate on the docking column to move through the linkage plate, so as to facilitate the rotation of the arm plate on the hinge seat. The rotation of the hinge seat makes the roller slide inside the chute, so as to facilitate the side seat to push the frame to move; 3. In the present invention, another pipeline is placed on the loading platform. The operation of the cylinder makes the pressing plate fix the pipeline. Then the second motor operates. The operation of the second motor facilitates the rotation of the transmission rod. The rotation of the transmission rod drives the rotation of the second pulley. The rotation of the second pulley drives the rotation of the first pulley through the transmission belt, so as to facilitate the rotation of the main shaft. A gear disc is fixedly connected to the middle position of the main shaft, and the gear disc meshes with the toothed plate. The rotation of the main shaft drives the toothed plate to move through the gear disc, so as to facilitate the toothed plate to drive the whole first pulley to move, so as to facilitate the automatic docking of pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0017] Figure 1 is a three-dimensional structural diagram of the bottom plate; Figure 2 is a side three-dimensional structural diagram of the bottom plate; Figure 3 is a rear three-dimensional structural diagram of the bottom plate; Figure 4 is a three-dimensional structural diagram of the bracket; Figure 5Schematic diagram of the three-dimensional structure of the load-bearing plate; Figure 6 Schematic diagram of the three-dimensional structure of the arc plate; Figure 7 Schematic diagram of the three-dimensional structure of the top plate; Figure 8 is Figure 7 Schematic diagram of the enlarged structure at A in

[0018] In the figure: 1. Bottom plate; 101. Bracket; 102. Control panel; 104. Limiting plate; 105. First pulley; 106. Ring; 107. Welding torch; 108. Limiting ring; 109. Second pulley; 110. Tooth ring; 112. Gear; 113. Driving rod; 114. First motor; 2. Support plate; 201. Load-bearing plate; 202. Frame; 203. Fixed plate; 204. Support block; 205. Side plate; 206. Positioning block; 207. Cross bar; 208. Sleeve; 209. Spring; 210. Frame body; 211. Arc plate; 212. Limiting wheel; 3. First shaft seat; 301. Threaded rod; 302. Servo motor; 303. Sleeve block; 304. Docking seat; 305. Linking plate; 306. Docking column; 307. Arm plate; 308. Hinge seat; 309. Chute; 310. Roller; 311. Side seat; 4. Second shaft seat; 401. Slide bar; 402. Sleeve seat; 403. Top plate; 404. Connecting block; 405. Loading platform; 406. Bracket; 407. Cylinder; 408. Pressure plate; 409. Third shaft seat; 410. Main shaft; 411. Tooth disc; 412. Tooth plate; 413. First belt pulley; 414. Transmission belt; 415. Second belt pulley; 416. Transmission rod; 417. Second motor. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment: Refer to Figure 1 - Figure 8A pipe welding machine with an automatic docking function as shown includes a bottom plate 1. In the middle of the top surface of the bottom plate 1, a bracket 101 is fixedly connected. On the surface of the bracket 101, a control panel 102 is fixedly installed. At the top surface of the bracket 101, a limiting plate 104 is fixedly connected. A first pulley 105 is rotatably connected to the limiting plate 104, and the first pulley 105 is attached to the surface of a ring 106. A welding torch 107 is fixedly installed on the ring 106. An inner limiting ring 108 is fixedly connected to the inside of the ring 106. A second pulley 109 is attached to the limiting ring 108, and the second pulley 109 is rotatably connected to one end of the limiting plate 104. A toothed ring 110 is fixedly connected to the surface of the ring 106. A gear 112 meshes with the toothed ring 110. The gear 112 is fixedly connected to one end of a driving rod 113. The other end of the driving rod 113 is fixedly connected to the output end of a first motor 114, and the first motor 114 is fixedly installed on the bracket 101. It further includes a limiting component, a driving component, and an adjusting component. The limiting component is arranged on the bottom plate 1 for fixing the pipe, the driving component is arranged on the limiting component for cooperative use, and the adjusting component is arranged on the bottom plate 1 for cooperative use with the pipe.

[0021] Specifically, it should be noted here that the control panel 102, the servo motor 302, and the second motor 417 are all electrically connected through wires, and their specific working principles are all cited through existing technologies, and will not be elaborated here too much.

[0022] As an implementation mode in this embodiment, the limiting component includes a pair of support plates 2 fixedly installed on the bottom plate 1. At the top ends of the pair of support plates 2, a load-bearing plate 201 is fixedly connected. A pair of frames 202 are fixedly connected to the load-bearing plate 201. A fixing plate 203 is fixedly connected between the pair of frames 202. A support block 204 is fixedly connected to the top end of the fixing plate 203. A pair of side plates 205 are fixedly connected to the load-bearing plate 201. At the top ends of the pair of side plates 205, a positioning block 206 is fixedly connected. A cross bar 207 is movably inserted at both ends of the positioning block 206. A sleeve 208 is fixedly connected to one end of the cross bar 207. A spring 209 is sleeved on the cross bar 207, and both ends of the spring 209 are fixedly connected to one side of the positioning block 206 and one side of the sleeve 208 respectively. The other end of the cross bar 207 is fixedly connected to a frame body 210. Arc-shaped plates 211 are fixedly connected to both ends of the frame body 210. Limiting wheels 212 are rotatably connected to the arc-shaped plates 211.

[0023] Specifically, place the pipeline on the supporting block 204, and then move the entire frame body 210 through the driving component. A cross bar 207 is fixedly connected to the frame body 210, and the cross bar 207 is movably inserted into the positioning block 206. The movement of the frame body 210 causes the cross bar 207 to move on the positioning block 206. The movement of the positioning block 206 causes the collar 208 to squeeze the spring 209. The movement of the cross bar 207 facilitates the movement of the arc plate 211 on the frame body 210, and the movement of the arc plate 211 facilitates the limiting wheel 212 to fit on the surface of the pipeline for limiting.

[0024] As an implementation method in this embodiment, the driving component includes a pair of first shaft seats 3 fixedly installed on the loading plate 201. A threaded rod 301 is rotatably connected between the pair of first shaft seats 3. One end of the threaded rod 301 is fixedly connected to the output end of the servo motor 302. The servo motor 302 is fixedly installed on one of the first shaft seats 3. The threaded rod 301 is provided with left and right hand threads. A sleeve block 303 is threadedly connected to the threaded rod 301. A docking seat 304 is fixedly connected to the top surface of the sleeve block 303. A linkage plate 305 is rotatably connected to the docking seat 304. The other end of the linkage plate 305 is rotatably connected to the docking column 306. One end of the docking column 306 is fixedly connected to the arm plate 307. The bottom end of the arm plate 307 is rotatably connected to the hinge seat 308. The hinge seat 308 is fixedly connected to the loading plate 201. A chute 309 is formed at the top end of the arm plate 307. A roller 310 is slidably connected inside the chute 309. Both ends of the roller 310 are rotatably connected to the side seat 311. The side seat 311 is fixedly connected to the frame body 210.

[0025] Specifically, when it is necessary to move the frame body 210, the servo motor 302 operates. The operation of the servo motor 302 facilitates the rotation of the threaded rod 301. The threaded rod 301 is provided with left and right hand threads, and the sleeve blocks 303 are threadedly connected to different threads. The rotation of the threaded rod 301 causes the sleeve blocks 303 to move. A docking seat 304 is fixedly connected to the sleeve block 303, and a linkage plate 305 is rotatably connected to the docking seat 304. The other end of the linkage plate 305 is rotatably connected to the docking column 306. The movement of the sleeve block 303 pulls the arm plate 307 on the docking column 306 to move through the linkage plate 305, thereby facilitating the rotation of the arm plate 307 on the hinge seat 308. The rotation of the hinge seat 308 causes the roller 310 to slide inside the chute 309, thereby facilitating the side seat 311 to push the frame body 210 to move.

[0026] As an implementation manner in this embodiment, the adjusting component includes two groups of second shaft seats 4 fixedly installed on the bottom plate 1. A slide bar 401 is fixedly connected between the second shaft seats 4. A socket 402 is slidably connected to the slide bar 401. The top end of the socket 402 is fixedly connected to the top plate 403. A connecting block 404 is fixedly connected to the middle position of the top surface of the top plate 403. A loading platform 405 is fixedly installed on the connecting block 404. A bracket 406 is fixedly connected to the top plate 403. A cylinder 407 is fixedly installed at the middle position of the top surface of the bracket 406. The bottom end of the cylinder 407 is fixedly connected to a pressing plate 408. A third shaft seat 409 is fixedly connected inside the second shaft seat 4. A main shaft 410 is rotatably connected to the third shaft seat 409. A gear disk 411 is fixedly connected to the middle position of the main shaft 410. A gear plate 412 is engaged with the gear disk 411. The gear plate 412 is fixedly connected to the bottom surface position of the top plate 403. A first pulley 413 is fixedly connected to the main shaft 410. A transmission belt 414 is sleeved on the first pulley 413. The bottom end of the transmission belt 414 is sleeved on a second pulley 415. The second pulley 415 is fixedly connected to one end of a transmission rod 416. The other end of the transmission rod 416 is fixedly connected to the output end of a second motor 417. The second motor 417 is fixedly installed on the bottom plate 1.

[0027] Specifically, place another pipe on the loading platform 405. Fix the pipe by operating the cylinder 407 to make the pressing plate 408 press on the pipe. Then operate the second motor 417. The operation of the second motor 417 facilitates the rotation of the transmission rod 416. The rotation of the transmission rod 416 drives the second pulley 415 to rotate. The rotation of the second pulley 415 drives the first pulley 413 to rotate through the transmission belt 414, thereby facilitating the rotation of the main shaft 410. A gear disk 411 is fixedly connected to the middle position of the main shaft 410, and the gear disk 411 is engaged with the gear plate 412. The rotation of the main shaft 410 drives the gear plate 412 to move through the gear disk 411, thereby facilitating the gear plate 412 to drive the entire first pulley 413 to move, and thus facilitating the automatic docking work between the pipes.

[0028] The working principle of the present invention: Place the pipe on the supporting block 204, and then move the entire frame 210 through the driving component. A cross bar 207 is fixedly connected to the frame 210, and the cross bar 207 is movably inserted into the positioning block 206. Move the cross bar 207 on the positioning block 206 by moving the frame 210. The movement of the positioning block 206 causes the collar 208 to squeeze the spring 209. The movement of the cross bar 207 facilitates the movement of the arc-shaped plate 211 on the frame 210. The movement of the arc-shaped plate 211 facilitates the limiting wheel 212 to fit on the surface of the pipe for limiting. When the frame 210 needs to be moved, the servo motor 302 operates. The operation of the servo motor 302 facilitates the rotation of the threaded rod 301. The threaded rod 301 is provided with left - hand and right - hand threads, and sleeve blocks 303 are threadedly connected to different threads. The rotation of the threaded rod 301 causes the sleeve blocks 303 to move. A docking seat 304 is fixedly connected to the sleeve block 303, and a linkage plate 305 is rotatably connected to the docking seat 304. The other end of the linkage plate 305 is rotatably connected to the docking column 306. The movement of the sleeve block 303 pulls the arm plate 307 on the docking column 306 to move through the linkage plate 305, thereby facilitating the rotation of the arm plate 307 on the hinge seat 308. The rotation of the hinge seat 308 causes the roller 310 to slide inside the chute 309, thereby facilitating the side seat 311 to push the frame 210 to move; Place another pipe on the carrier 405. The operation of the cylinder 407 enables the pressing plate 408 to fix the pipe. Then, the second motor 417 operates. The operation of the second motor 417 facilitates the rotation of the transmission rod 416. The rotation of the transmission rod 416 drives the rotation of the second pulley 415. The rotation of the second pulley 415 drives the rotation of the first pulley 413 through the transmission belt 414, thereby facilitating the rotation of the main shaft 410. A toothed disc 411 is fixedly connected to the middle position of the main shaft 410, and the toothed disc 411 meshes with the toothed plate 412. The rotation of the main shaft 410 drives the toothed plate 412 to move through the toothed disc 411, thereby facilitating the toothed plate 412 to drive the entire first pulley 413 to move, and thus facilitating the automatic docking work between the pipes.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pipeline welding machine with automatic docking function, comprising a base plate (1), characterized in that: A bracket (101) is fixedly connected to the middle of the top surface of the bottom plate (1), a control panel (102) is fixedly mounted on the surface of the bracket (101), a limiting plate (104) is fixedly connected to the top surface of the bracket (101), a first pulley (105) is rotatably connected to the limiting plate (104), the first pulley (105) is attached to the surface of a circular ring (106), a welding gun (107) is fixedly mounted on the circular ring (106), a limiting ring (108) is fixedly connected to the inner side of the circular ring (106), and the A second pulley (109) is attached to the limiting ring (108), and the second pulley (109) is rotatably connected to one end of the limiting plate (104). A gear ring (110) is fixedly connected to the surface of the circular ring (106), and a gear (112) is meshed on the gear ring (110). The gear (112) is fixedly connected to one end of a driving rod (113), and the other end of the driving rod (113) is fixedly connected to the output end of a first motor (114), and the first motor (114) is fixedly mounted on the bracket (101); It also comprises a limit assembly, a drive assembly and an adjustment assembly, wherein the limit assembly is arranged on the base plate (1) for fixing the pipeline, the drive assembly is arranged on the limit assembly for use in conjunction with the limit assembly, and the adjustment assembly is arranged on the base plate (1) for use in conjunction with the pipeline.

2. The pipeline welding machine with automatic docking function according to claim 1, characterized in that: The limiting assembly comprises a pair of support plates (2) fixedly mounted on the bottom plate (1); the top ends of the pair of support plates (2) are fixedly connected to a loading plate (201); a pair of frames (202) are fixedly connected to the loading plate (201); a fixing plate (203) is fixedly connected between the pair of frames (202); and a supporting block (204) is fixedly connected to the top ends of the fixing plates (203).

3. The pipeline welding machine with automatic docking function according to claim 2 is characterized in that: A pair of side plates (205) are fixedly connected to the loading plate (201); a positioning block (206) is fixedly connected to the top ends of the pair of side plates (205); cross bars (207) are movably inserted at both ends of the positioning block (206); a collar (208) is fixedly connected to one end of the cross bar (207); a spring (209) is sleeved on the cross bar (207); and two ends of the spring (209) are respectively fixedly connected to one side of the positioning block (206) and one side of the collar (208).

4. The pipeline welding machine with automatic docking function according to claim 3 is characterized in that: The other end of the crossbar (207) is fixedly connected to the frame body (210), and both ends of the frame body (210) are fixedly connected to arc-shaped plates (211), and the arc-shaped plates (211) are rotatably connected to limit wheels (212).

5. The pipeline welding machine with automatic docking function according to claim 4 is characterized in that: The driving assembly comprises a pair of first shaft seats (3) fixedly mounted on the object carrier (201); a threaded rod (301) is rotatably connected between the pair of first shaft seats (3); one end of the threaded rod (301) is fixedly connected to an output end of a servo motor (302); the servo motor (302) is fixedly mounted on one of the first shaft seats (3); and the threaded rod (301) is provided with positive and negative threads.

6. The pipeline welding machine with automatic docking function according to claim 5, characterized in that: A sleeve block (303) is threadedly connected to the threaded rod (301); a docking seat (304) is fixedly connected to the top surface of the sleeve block (303); a linkage plate (305) is rotatably connected to the docking seat (304); the other end of the linkage plate (305) is rotatably connected to a docking column (306); one end of the docking column (306) is fixedly connected to an arm plate (307).

7. The pipeline welding machine with automatic docking function according to claim 6, characterized in that: The bottom end of the arm plate (307) is rotatably connected to a hinge seat (308), and the hinge seat (308) is fixedly connected to the loading plate (201). A slide groove (309) is provided at the top end of the arm plate (307), and a roller (310) is slidably connected inside the slide groove (309). Both ends of the roller (310) are rotatably connected to a side seat (311), and the side seat (311) is fixedly connected to the frame (210).

8. The pipeline welding machine with automatic docking function according to claim 2, characterized in that: The adjustment assembly comprises two groups of second shaft seats (4) fixedly mounted on the bottom plate (1); a sliding rod (401) is fixedly connected between the second shaft seats (4); a sleeve seat (402) is slidably connected to the sliding rod (401); the top end of the sleeve seat (402) is fixedly connected to the top plate (403); a connecting block (404) is fixedly connected to the middle position of the top surface of the top plate (403); a loading platform (405) is fixedly mounted on the connecting block (404); a bracket (406) is fixedly connected to the top plate (403); a cylinder (407) is fixedly mounted to the middle position of the top surface of the bracket (406); and the bottom end of the cylinder (407) is fixedly connected to the pressure plate (408).

9. The pipeline welding machine with automatic docking function according to claim 8, characterized in that: A third shaft seat (409) is fixedly connected inside the second shaft seat (4), a main shaft (410) is rotatably connected to the third shaft seat (409), a toothed disc (411) is fixedly connected to the middle of the main shaft (410), a toothed plate (412) is meshed on the toothed disc (411), and the toothed plate (412) is fixedly connected to the bottom surface of the top plate (403).

10. The pipeline welding machine with automatic butt joint function according to claim 9, characterized in that: A first pulley (413) is fixedly connected to the main shaft (410), a transmission belt (414) is sleeved on the first pulley (413), the bottom end of the transmission belt (414) is sleeved on a second pulley (415), the second pulley (415) is fixedly connected to one end of a transmission rod (416), the other end of the transmission rod (416) is fixedly connected to an output end of a second motor (417), and the second motor (417) is fixedly mounted on the base plate (1).

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