A welding tool with double-head rotation and automatic welding device

Abstract

The utility model belongs to welding machine technical field, concretely relates to a kind of welding tool and automatic welding device with double-end rotation. This kind of welding tool with double-end rotation, two plate bodies are respectively spliced and fixed at the two ends of welding round pipe, the opposite surface of plate body and welding round pipe end portion is formed with the welding hole for welding round pipe embedding, including welding base, fixture mechanism and drive mechanism;Welding base is used to support welding round pipe, fixture mechanism includes the first clamping component and the second clamping component for clamping two plate bodies and being oppositely arranged at the two sides of welding base;Drive mechanism, connection and drive first rotating rod and second rotating rod synchronous rotation. First rotating rod and second rotating rod are controlled by same drive mechanism, to drive first clamp, second clamp and welding round pipe and two plate bodies clamped between first clamp and second clamp rotate, rotation process is automated, without manual overturning, to carry out girth welding operation to welding round pipe two ends subsequently, improve welding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of welding machine technology, specifically relating to a welding fixture with double-head rotation and an automatic welding device. Background Technology

[0002] Welding technology, as a traditional and fundamental process in manufacturing, has seen rapid development in industrial applications in recent years. In the field of industrial automation, many companies have an urgent need for advanced welding equipment. Improving welding process quality and performance depends on both the quality of welding equipment and the skill of the operators. However, for welding the connection points of parts at both ends of a circular rod, existing welding fixtures cannot complete the welding at one time, requiring two separate installations and welding processes. This process easily leads to inconsistencies in angle, direction, and position, significantly increasing the defect rate of the welded parts. Further corrections or re-welding are necessary, and in some cases, the parts may even break and become unusable. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic welding device that can improve the yield of welded parts.

[0004] The present invention adopts the following technical solution: A welding fixture with double-head rotation, which splices and fixes two plates to the two ends of a welding round tube respectively, wherein the opposite surfaces of the plates and the ends of the welding round tube form welding holes for the welding round tube to be inserted, characterized in that: it includes a welding base, a clamping mechanism and a driving mechanism. A welding base for supporting a welded circular tube includes two support rollers rotatably mounted on its top. The welded circular tube is supported on the two support rollers, and its axis is on the same straight line as the axis of the clamping mechanism. The clamping mechanism includes a first clamping assembly and a second clamping assembly disposed opposite to each other on both sides of a welding base for clamping two plates. The first clamping assembly includes a first clamping seat, a first rotating rod rotatably disposed on the first clamping seat, a first clamp disposed on the first rotating rod for clamping the plate, and a pushing assembly disposed on the first clamping seat and connected to and driving the first clamp to move closer to or away from the second clamping assembly. The second clamping assembly includes a second clamping seat, a second rotating rod rotatably disposed on the second clamping seat opposite to the first rotating rod, and a second clamp disposed on the second rotating rod for clamping another plate. The two ends of the welding tube are respectively embedded in welding holes on the opposite plates, thereby being fixed between the first clamp and the second clamp. The drive mechanism connects to and drives the first rotating rod and the second rotating rod to rotate synchronously.

[0005] Furthermore, the first clamp includes a first positioning plate connected to the end of the first rotating rod, a first clamping plate disposed on the outside of the first positioning plate, a first clamping groove disposed on the opposite surface of the first clamping plate and the second clamp, and a first adsorption fixing member disposed on the first rotating rod and communicating with the first clamping groove. The plate body is adsorbed and fixed in the first clamping groove by the first adsorption fixing member.

[0006] Furthermore, the first adsorption fixing member includes two first adsorption holes disposed vertically opposite each other in the first clamping groove, a first adsorption cavity disposed in the first positioning plate and communicating with the two first adsorption holes, a negative pressure connector disposed on the first rotating rod, and a first negative pressure channel disposed in the first rotating rod and communicating with the negative pressure connector and the first adsorption cavity.

[0007] Furthermore, the end of the first rotating rod is provided with a first connecting seat opposite to the second clamp, and the first connecting seat, the first positioning plate and the first clamping plate are detachably connected by bolts and nuts.

[0008] Furthermore, the first rotating rod is movably disposed in the first clamping seat via a support member. The support member includes a support bearing disposed in the first clamping seat and a connecting bushing disposed in the support bearing. The first rotating rod is movably disposed in the connecting bushing. A limiting spline is provided on the outer periphery of the first rotating rod, and a limiting keyway for the limiting spline to be embedded is provided on the inner wall of the connecting bushing.

[0009] Furthermore, the drive mechanism includes a drive motor, a synchronous shaft connected to the output shaft of the drive motor, a first transmission assembly disposed between the synchronous shaft and the first rotating rod, and a second transmission assembly disposed between the synchronous shaft and the second rotating rod. The first transmission assembly is connected between the synchronous shaft and the connecting bushing.

[0010] Furthermore, the first transmission assembly includes a first driving belt gear disposed on a synchronous shaft, a first driven belt gear disposed on the outer periphery of a connecting bushing and opposite to the first driving belt gear, a first synchronous toothed belt disposed between the first driving belt gear and the first driven belt gear, and a first tensioning belt gear disposed on a first clamping seat between the first driving belt gear and the first driven belt gear.

[0011] Furthermore, the pushing assembly includes a mounting plate disposed at the other end of the first rotating rod, an electric push rod disposed on the first clamping seat and connected to and driving the mounting plate to move closer to or away from the second clamp, and a guide member disposed between the mounting plate and the first clamping seat, wherein the first rotating rod is fixedly connected to the mounting plate via a bearing.

[0012] Furthermore, the welding base also includes a welding frame, an adjustment plate that can be moved up and down on the welding frame, and a fixing assembly disposed between the adjustment plate and the welding frame, with the two support rollers disposed at the upper end of the adjustment plate.

[0013] An automatic welding device includes a frame, welding equipment, and welding fixture with double-head rotation. The welding base and clamping mechanism are mounted on the frame. The welding equipment is used to weld two plates to the two ends of a welding circular tube, and includes a guide rail movably mounted on the frame, a multi-axis welding arm connected to the guide rail, and a welding head rotatably mounted on the multi-axis welding arm.

[0014] As can be seen from the above description of this utility model, compared with the prior art, the beneficial effects of this utility model are as follows: By defining the specific structure of the double-headed rotary welding fixture, the first rotating rod and the second rotating rod are controlled by the same driving mechanism, thereby driving the first clamp, the second clamp, and the welding round tube and two plates clamped between the first clamp and the second clamp to rotate. The rotation process is automated, eliminating the need for manual flipping, so as to facilitate the subsequent circumferential welding operation at both ends of the welding round tube, thus improving welding efficiency; at the same time, by defining the specific structure of the clamping mechanism, the two plates and the welding round tube are connected... The two ends are connected together to achieve the fixation and positioning of the two ends of the welded round tube in one go, so that the angle, direction and position between the two plates at both ends of the welded round tube are completely consistent, and the included angle between the welded round tube and the end plate is always 90°. There is no need for manual alignment and installation of the welded round tube and the plates at both ends, which improves the welding quality and efficiency. In particular, by setting a pushing component on the first clamping seat, the first clamp can be driven to move closer to the second clamp, so that the welded round tube and the two plates are firmly clamped between the first clamp and the second clamp, improving the stability of the clamping mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding machine.

[0016] Figure 2 This is a partial structural diagram of the welding fixture.

[0017] Figure 3 This is a schematic diagram of the internal structure of the welding fixture.

[0018] Figure 4 for Figure 3 An enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 5 This is an enlarged schematic diagram of the internal structure of the first clamping component.

[0020] Figure 6 This is a partial structural exploded view of the first fixture.

[0021] In the diagram: 1. Frame; 2. Welding equipment; 21. Guide rail; 22. Multi-axis welding arm; 23. Welding head; 3. Welding fixture; 31. Welding base; 311. Support roller; 312. Welding frame; 313. Adjusting plate; 314. Fixing assembly; 315. Positioning hole; 316. Positioning groove; 317. Positioning bolt; 318. Positioning nut; 32. Clamping mechanism; 33. Drive mechanism; 331. Drive motor; 332. Synchronous shaft; 333. First transmission assembly; 334. Second transmission assembly; 335. First driving belt gear; 336. First driven belt gear; 337. First synchronous toothed belt; 338. First tension belt gear; 34. First clamping assembly; 341. First clamping seat; 342. First rotating... 3421. Moving rod; 3421. First connecting seat; 343. First clamp; 344. Pushing assembly; 3441. Mounting plate; 3442. Electric push rod; 3443. Guide component; 345. First positioning plate; 346. First clamping plate; 347. First clamping groove; 348. Adsorption fixing component; 3481. First adsorption hole; 3482. First adsorption cavity; 3483. Negative pressure connector; 3484. First negative pressure channel; 349. Groove; 35. Second clamping assembly; 351. Second clamping seat; 352. Second rotating rod; 353. Second clamp; 36. Support component; 361. Support bearing; 362. Connecting bushing; 363. Limiting spline; 364. Limiting keyway; 4. Plate body; 41. Welding hole; 5. Welded round tube. Detailed Implementation

[0022] The present invention will be further described below through specific embodiments.

[0023] like Figures 1 to 6 As shown, this embodiment provides an automatic welding device, including a frame 1, welding equipment 2, and welding fixture 3 with double-head rotation.

[0024] Welding equipment 2, mounted on frame 1, is used to weld two plates 4 to the two ends of welding round pipe 5 respectively. It includes a guide rail 21 movably mounted on frame 1, a multi-axis welding arm 22 connected to the guide rail 21, and a welding head 23 rotatably mounted on the multi-axis welding arm 22. Welding equipment 2 is a commonly used device in the field of welding machines, and its specific structure will not be described in detail here.

[0025] Welding fixture 3, mounted on frame 1, is used to splice and fix two plates 4 to the two ends of welding tube 5 respectively. The opposing surfaces of the plates 4 and the ends of the welding tube 5 form welding holes 41 for the welding tube 5 to be inserted. Welding fixture 3 includes a welding base 31, a clamping mechanism 32, and a driving mechanism 33. Specifically, the welding base 31 supports the welding tube 5 and includes two rotatable support rollers 311 mounted on its top. The welding tube 5 is supported on the two support rollers 311, and its axis is on the same straight line as the axis of the clamping mechanism 32. Further, the welding base 31 also includes a welding frame 312, an adjusting plate 313 movable up and down on the welding frame 312, and a mechanism between the adjusting plate 313 and the welding frame 312. The fixing component 314 between the two supports 311 is set on the upper end of the adjusting plate 313. By setting the fixing component 314, the height of the welding base 31 can be increased or decreased, thus making it suitable for welding round pipes 5 of different diameters. This ensures that the axis of the welding round pipes 5 of different diameters is always on the same straight line as the axis of the clamping mechanism 32, improving the practicality of the welding fixture 3. Furthermore, the fixing component 314 includes a plurality of positioning holes 315 spaced apart along the length of the adjusting plate 313, positioning grooves 316 on the welding frame 312 opposite to the plurality of positioning holes 315, and positioning bolts 317 passing through the positioning holes 315 and positioning grooves 316 in sequence, and positioning nuts 318 cooperating with the positioning bolts 317.

[0026] The clamping mechanism 32 includes a first clamping assembly 34 and a second clamping assembly 35, which are disposed opposite to each other on both sides of the welding base 31 for clamping two plates 4. Through the cooperation between the first clamping assembly 34 and the second clamping assembly 35, the two plates 4 are connected to the two ends of the welding tube 5, realizing the fixation and positioning of the two ends of the welding tube 5 in one step. This ensures that the angle, direction, and position between the two plates 4 at both ends of the welding tube 5 are completely consistent, and that the included angle between the welding tube 5 and the end plates 4 is always 90°. This eliminates the need for manual alignment and installation of the welding tube 5 and the plates 4 at both ends, improving welding quality and efficiency. Specifically, the first clamping assembly 34 includes a first clamping seat 341. The second clamping assembly 35 comprises a first rotating rod 342 rotatably mounted on a first clamping seat 341, a first clamp 343 mounted on the first rotating rod 342 for clamping a plate 4, and a pushing assembly 344 mounted on the first clamping seat 341 and connected to and driving the first clamp 343 to move closer to or away from the second clamping assembly 35. The second clamping assembly 35 includes a second clamping seat 351, a second rotating rod 352 rotatably mounted on the second clamping seat 351 opposite to the first rotating rod 342, and a second clamp 353 mounted on the second rotating rod 352 for clamping another plate 4. The two ends of a welded round tube 5 are respectively embedded in welding holes 41 on the opposite plate 4, thereby being fixed to the first clamp 342. Between 43 and the second clamp 353; further, the first clamp 343 includes a first positioning plate 345 connected to the end of the first rotating rod 342, a first clamping plate 346 disposed outside the first positioning plate 345, a first clamping groove 347 disposed on the surface of the first clamping plate 346 opposite to the second clamp 353, and a first adsorption fixing member 348 disposed on the first rotating rod 342 communicating with the first clamping groove 347, the plate 4 is adsorbed and fixed in the first clamping groove 347 by the first adsorption fixing member 348; further, the end of the first rotating rod 342 is provided with a first connecting seat 3421 opposite to the second clamp 353, the first connecting seat 3421 and the first positioning plate 34 5 is detachably connected to the first clamping plate 346 via bolts and nuts; furthermore, multiple first clamping plates 346 can be provided, and different shaped first clamping grooves 347 can be provided on the multiple first clamping plates 346. By replacing the first clamping grooves 347 of different shapes, it can be adapted to plates 4 of different shapes, thereby improving the practicality of the welding fixture 3; wherein, two grooves 349 are provided opposite to each other inside the first clamping groove 347, which facilitates the installation and removal of the plate 4; furthermore, the second clamp 353 is the same as the first clamp 343, and its cooperation method with the second rotating rod 352 is the same as the cooperation method between the first clamp 343 and the first rotating rod 342, which will not be described in detail here.

[0027] The first adsorption fixing member 348 includes two first adsorption holes 3481 arranged vertically opposite each other in the first clamping groove 347, a first adsorption cavity 3482 arranged in the first positioning plate 345 and communicating with the two first adsorption holes 3481, a negative pressure connector 3483 arranged on the first rotating rod 342, and a first negative pressure channel 3484 arranged in the first rotating rod 342 and communicating with the negative pressure connector 3483 and the first adsorption cavity 3482; when the plate 4 is embedded in the first clamping groove 347, the other end of the negative pressure connector 3483 is connected to a negative pressure device, and the gas between the first positioning plate 345, the first clamping plate 346 and the plate 4 is sequentially passed through the two first... The adsorption holes 3481, the first adsorption chamber 3482, and the first negative pressure channel 3484 are then drawn away by the negative pressure equipment, thereby forming an adsorption force between the plate 4 and the first clamping groove 347, so that the welded round tube 5 and the plate 4 are tightly pressed in the first clamping groove 347; specifically, the negative pressure connector 3483 is a universal rotary connector commonly used in the prior art. One end of the negative pressure connector 3483 is connected to the first rotating rod 342, and the other end is connected to the air extraction pipe of the negative pressure equipment. When the first rotating rod 342 rotates, since the negative pressure connector 3483 is a universal rotary connector, the air extraction pipe will not rotate with the first rotating rod 342, which can avoid the air extraction pipe from getting tangled.

[0028] The first rotating rod 342 is movably disposed in the first clamping seat 341 via the support member 36. The pushing assembly 344 includes a mounting plate 3441 disposed at the other end of the first rotating rod 342, an electric push rod 3442 disposed on the first clamping seat 341 and connected to and driving the mounting plate 3441 to move closer to or away from the second clamp 353, and a guide member 3443 disposed between the mounting plate 3441 and the first clamping seat 341. The first rotating rod 342 is fixedly connected to the mounting plate 3441 via a bearing. In use, when one end of the welded round tube 5 is inserted into the welding hole 41 of the plate 4 in the second clamp 353, the electric push rod 3442 retracts, driving the mounting plate 3441 and the first rotating rod 342 to move closer to the second clamp 353, thereby causing the other end of the welded round tube 5 to be inserted into the welding hole 41 of the plate 4 in the first clamp 343. Within 1, the welded round tube 5 and the two end plates 4 are firmly clamped between the first clamp 343 and the second clamp 353, improving the stability of the clamping mechanism 32. Specifically, the support member 36 includes a support bearing 361 disposed in the first clamping seat 341 and a connecting bushing 362 disposed in the support bearing 361. The first rotating rod 342 is movably disposed in the connecting bushing 362. A limiting spline 363 is provided on the outer periphery of the first rotating rod 342, and a limiting keyway 364 is provided on the inner wall of the connecting bushing 362 for the limiting spline 363 to be embedded. Through the mutual cooperation between the limiting spline 363 and the limiting keyway 364, the first rotating rod 342 can move back and forth along the length direction of the limiting keyway 364 in the connecting bushing 362, and can also rotate together with the connecting bushing 362 in the support bearing 361 under the control of the drive mechanism 33.

[0029] Drive mechanism 33 connects and drives the first rotating rod 342 and the second rotating rod 352 to rotate synchronously. It includes a drive motor 331, a synchronous shaft 332 connected to the output shaft of the drive motor 331, a first transmission assembly 333 disposed between the synchronous shaft 332 and the first rotating rod 342, and a second transmission assembly 334 disposed between the synchronous shaft 332 and the second rotating rod 352. The first transmission assembly 333 is connected between the synchronous shaft 332 and the connecting bushing 362. By defining the structure of drive mechanism 33, the first rotating rod 342 rotates synchronously with the second rotating rod 352. The moving rod 342 and the second rotating rod 352 are controlled by the same drive motor 331, thereby driving the first clamp 343, the second clamp 353, the welded round tube 5 clamped between the first clamp 343 and the second clamp 353, and the two plates 4 to rotate. This automates the rotation process, eliminating the need for manual flipping, which facilitates subsequent circumferential welding of both ends of the welded round tube 5 and improves welding efficiency. Specifically, the first transmission assembly 333 includes a first drive belt gear 335 mounted on the synchronous shaft 332 and a drive belt gear 335 mounted on the outer periphery of the connecting bushing 362. The first driven belt gear 336 is opposite to the first driving belt gear 335; a first synchronous toothed belt 337 is disposed between the first driving belt gear 335 and the first driven belt gear 336; and a first tensioning belt gear 338 is disposed on the first clamping seat 341 between the first driving belt gear 335 and the first driven belt gear 336. By providing the first tensioning belt gear 338, the tension of the first synchronous toothed belt 337 can be adjusted in a timely manner, improving the stability of the first transmission assembly 333. Furthermore, the first... The driving belt gear 335, the first driven belt gear 336, the first synchronous toothed belt 337, and the first tension belt gear 338 are common synchronous transmission methods in the mechanical field. Their specific selection and structure will not be described in detail here. Furthermore, the second transmission component 334 is consistent with the first transmission component 333. Its cooperation with the synchronous shaft 332 and the second rotating rod 352 is the same as that of the first transmission component 333 with the synchronous shaft 332 and the second rotating rod 352. Its specific structure will not be described in detail here.

[0030] In summary, by utilizing the above-mentioned technical solution of this utility model, and by defining the specific structure of the double-headed rotating welding fixture 3, the first clamp 343, the second clamp 353, and the welding round tube 5 and the two plates 4 clamped between the first clamp 343 and the second clamp 353 are driven to rotate, thus automating the rotation process and eliminating the need for manual flipping. This facilitates subsequent circumferential welding operations on both ends of the welding round tube 5, improving welding efficiency. Furthermore, by defining the specific structure of the clamping mechanism 32, the fixing and positioning of both ends of the welding round tube 5 can be completed in one operation, allowing the welding round tube 5 to... The angles, directions, and positions between the two end plates 4 are completely consistent, and the included angle between the welded round tube 5 and the end plate 4 is always 90°. There is no need for manual alignment and installation of the welded round tube 5 and the plates 4 at both ends, which improves the welding quality and efficiency. In addition, by setting a pushing component 344 on the first clamping seat 341, the first clamp 343 can be driven to move closer to the second clamp 353, so that the welded round tube 5 and the two plates 4 are firmly clamped between the first clamp 343 and the second clamp 353, which improves the stability of the clamping mechanism 32.

[0031] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application and the contents of the specification should still fall within the scope of the present utility model application.

Claims

1. A welding fixture with double-headed rotation, comprising splicing and fixing two plates to both ends of a weldable circular tube, wherein the opposing surfaces of the plates and the ends of the weldable circular tube form welding holes for the weldable circular tube to be inserted, characterized in that: Includes welding base, clamping mechanism and drive mechanism; A welding base for supporting a welded circular tube includes two support rollers rotatably mounted on its top. The welded circular tube is supported on the two support rollers, and its axis is on the same straight line as the axis of the clamping mechanism. The clamping mechanism includes a first clamping assembly and a second clamping assembly disposed opposite to each other on both sides of a welding base for clamping two plates. The first clamping assembly includes a first clamping seat, a first rotating rod rotatably disposed on the first clamping seat, a first clamp disposed on the first rotating rod for clamping the plate, and a pushing assembly disposed on the first clamping seat and connected to and driving the first clamp to move closer to or away from the second clamping assembly. The second clamping assembly includes a second clamping seat, a second rotating rod rotatably disposed on the second clamping seat opposite to the first rotating rod, and a second clamp disposed on the second rotating rod for clamping another plate. The two ends of the welding tube are respectively embedded in welding holes on the opposite plates, thereby being fixed between the first clamp and the second clamp. The drive mechanism connects to and drives the first rotating rod and the second rotating rod to rotate synchronously.

2. The welding fixture with double-head rotation according to claim 1, characterized in that: The first clamp includes a first positioning plate connected to the end of the first rotating rod, a first clamping plate disposed on the outside of the first positioning plate, a first clamping groove disposed on the opposite surface of the first clamping plate and the second clamp, and a first adsorption fixing member disposed on the first rotating rod and communicating with the first clamping groove. The plate body is adsorbed and fixed in the first clamping groove by the first adsorption fixing member.

3. The welding fixture with double-head rotation according to claim 2, characterized in that: The first adsorption fixing component includes two first adsorption holes arranged vertically opposite each other in the first clamping groove, a first adsorption cavity arranged in the first positioning plate and communicating with the two first adsorption holes, a negative pressure connector arranged on the first rotating rod, and a first negative pressure channel arranged in the first rotating rod and communicating with the negative pressure connector and the first adsorption cavity.

4. The welding fixture with double-head rotation according to claim 3, characterized in that: The first rotating rod end is provided with a first connecting seat opposite to the second clamp, and the first connecting seat, the first positioning plate and the first clamping plate are detachably connected by bolts and nuts.

5. A welding fixture with double-head rotation according to claim 3, characterized in that: The first rotating rod is movably disposed in the first clamping seat via a support member. The support member includes a support bearing disposed in the first clamping seat and a connecting bushing disposed in the support bearing. The first rotating rod is movably disposed in the connecting bushing. A limit spline is provided on the outer periphery of the first rotating rod, and a limit keyway is provided on the inner wall of the connecting bushing for the limit spline to be embedded.

6. The welding fixture with double-head rotation according to claim 5, characterized in that: The drive mechanism includes a drive motor, a synchronous shaft connected to the output shaft of the drive motor, a first transmission assembly disposed between the synchronous shaft and a first rotating rod, and a second transmission assembly disposed between the synchronous shaft and a second rotating rod. The first transmission assembly is connected between the synchronous shaft and a connecting bushing.

7. A welding fixture with double-head rotation according to claim 6, characterized in that: The first transmission assembly includes a first driving belt gear disposed on a synchronous shaft, a first driven belt gear disposed on the outer periphery of a connecting bushing and opposite to the first driving belt gear, a first synchronous toothed belt disposed between the first driving belt gear and the first driven belt gear, and a first tensioning belt gear disposed on a first clamping seat between the first driving belt gear and the first driven belt gear.

8. A welding fixture with double-head rotation according to claim 1, characterized in that: The pushing assembly includes a mounting plate disposed at the other end of the first rotating rod, an electric push rod disposed on the first clamping seat and connected to and driving the mounting plate to move closer to or away from the second clamp, and a guide member disposed between the mounting plate and the first clamping seat. The first rotating rod is fixedly connected to the mounting plate by a bearing.

9. A welding fixture with double-head rotation according to claim 1, characterized in that: The welding base also includes a welding frame, an adjustment plate that can be moved up and down on the welding frame, and a fixing component disposed between the adjustment plate and the welding frame, with the two support rollers disposed on the upper end of the adjustment plate.

10. An automatic welding device, characterized in that: The device includes a frame, welding equipment, and a welding fixture with double-head rotation as described in any one of claims 1 to 9. The welding base and clamping mechanism are mounted on the frame. The welding equipment is used to weld two plates to the two ends of a welding circular tube, and includes a guide rail movably mounted on the frame, a multi-axis welding arm connected to the guide rail, and a welding head rotatably mounted on the multi-axis welding arm.

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