A mechanically automated welding device and its welding method

Abstract

This invention discloses a mechanically automated welding device and its welding method. The mechanically automated welding device includes a feeding table with a partition fixedly installed in the middle. Conveying rollers are fixedly installed at equal intervals on both sides of the partition inside the feeding table. The operation of the feeding motor, the meshing of the second gear and the first gear, and the meshing of the third gear and the second gear drive the first pusher plate and the second pusher plate to rotate synchronously, which can synchronously convey two pipes of different diameters. The central axes of the two pipes are aligned by the setting of the first V-shaped frame and the second V-shaped frame, which facilitates the loading of the pipes. The position of the two pipes is detected by a vision camera. The operation of the first moving motor and the second moving motor respectively drives the movement of the pipes to center the contact surfaces of the ends of the two pipes and set the contact surfaces of the ends of the two pipes to correspond to the welding components, which facilitates the positioning and welding of the two pipes.

Description

Technical Field

[0001] This invention relates to the field of mechanical automated welding technology, specifically to a mechanical automated welding device and its welding method. Background Technology

[0002] In machining, welding is used to fix two parts together. During the production process, in order to improve welding efficiency, automated mechanical welding is used to carry out uninterrupted welding processing, thereby improving processing efficiency.

[0003] When welding pipe fittings, such as those used for streetlights where two sections of steel pipe with different diameters need to be welded, the two sections often need to be manually loaded separately due to their different diameters. This loading process is quite cumbersome. To ensure that the central axes of the two sections are always aligned, they are often fixed to clamping mechanisms or triangular chucks to fix their positions. By controlling the contact between the two sections, they can then be manually or through a welding machine to perform circumferential welding. This process is tedious, has a low degree of automation, and therefore has low welding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanically automated welding device and welding method thereof to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A mechanically automated welding device includes a conveying platform, a partition fixedly installed in the middle of the conveying platform, and conveying rollers fixedly installed at equal intervals on both sides of the partition inside the conveying platform. The conveying rollers are inclined and used for conveying pipe fittings. A first fixing frame is fixedly installed at one end of the conveying platform corresponding to the conveying rollers. An mounting frame is fixedly installed on the inner wall of the first fixing frame. A first rotating rod and a second rotating rod are rotatably installed on both sides of the mounting frame and between the two ends of the first fixing frame, respectively. The first rotating rod and the second rotating rod rotate simultaneously, but with different rotation frequencies. The middle of the first rotating rod rotates at a frequency of... A first pusher plate is fixedly installed in a ring array around the central axis of a rotating rod. Several groups of first pusher plates form a gear-like structure. The pipe fitting is located between two first pusher plates. A second pusher plate is fixedly installed in a ring array around the central axis of the second rotating rod. Several groups of second pusher plates form a gear-like structure. The pipe fitting is located between two second pusher plates. A bearing frame is rotatably installed at one end of the conveying platform via a pivot pin. A first V-shaped frame and a second V-shaped frame are fixedly installed at equal intervals around the central axis of the first and second rotating rods, respectively. The first V-shaped frame and the second V-shaped frame have different heights. The first V-shaped frame and the second V-shaped frame are used to position the two pipe fittings so that their central axes coincide.

[0006] As a further preferred embodiment of this technical solution, a feeding motor is fixedly installed at one end of the first fixed frame, the output end of the feeding motor passes through the first fixed frame and is fixedly connected to the first rotating rod, a first gear is fixedly installed at the end of the first rotating rod away from the feeding motor, a second gear is rotatably installed in the middle of the mounting frame, the second gear meshes with the first gear, and a third gear is fixedly installed at the end of the second rotating rod close to the first gear, the third gear meshes with the second gear.

[0007] As a further preferred embodiment of this technical solution, the transmission ratio between the second gear and the first gear is 1:1.

[0008] As a further preferred embodiment of this technical solution, a second fixed frame is fixedly installed above the support frame on the material conveying platform. A movable frame is slidably installed in the middle of the second fixed frame. First hydraulic rods are symmetrically fixedly installed on the top of the movable frame. An adjusting frame is fixedly installed through the movable frame at the movable ends of the two first hydraulic rods. A first friction roller and a second friction roller are rotatably installed on the bottom of both sides of the adjusting frame, respectively. A first moving motor and a second moving motor for driving the first friction roller and the second friction roller are fixedly installed on one side of the adjusting frame, respectively, at the positions corresponding to the first friction roller and the second friction roller. A vision camera is fixedly installed in the middle of the adjusting frame, and a welding assembly is fixedly installed on one side of the middle of the adjusting frame.

[0009] As a further preferred embodiment of this technical solution, a second hydraulic rod is fixedly installed at the middle of one end of the second fixed frame, and a mounting base is fixedly installed at the moving end of the second hydraulic rod through the second fixed frame. A rotating motor is fixedly installed on one side of the mounting base, and a rotating rubber roller is fixedly installed at the output end of the rotating motor through the mounting base.

[0010] As a further preferred embodiment of this technical solution, an adjustment motor is fixedly installed on one side of the second fixed frame, and a screw is rotatably installed in the middle of the second fixed frame via a bearing. The output end of the adjustment motor is fixedly connected to one end of the screw, and the screw is threadedly connected to the middle of the movable frame. Limiting rods are symmetrically fixedly installed inside the second fixed frame, and the movable frame is slidably installed between the two limiting rods.

[0011] As a further preferred embodiment of this technical solution, the inner walls of both the first V-shaped frame and the second V-shaped frame are equipped with ball bearings that are rolled at equal intervals.

[0012] As a further preferred embodiment of this technical solution, an installation rod is fixedly installed at the bottom position of the material conveying platform corresponding to the support frame, and a third hydraulic rod is fixedly installed in the middle of the installation rod. The moving end of the third hydraulic rod is rotatably connected to the middle of the support frame through a pivot pin.

[0013] As a further preferred embodiment of this technical solution, the two ends of the support frame are inclined.

[0014] As a further preferred embodiment of this technical solution, a welding method using a mechanically automated welding device includes the following steps:

[0015] S1. Two pipes of different diameters are placed on the conveying rollers on both sides of the partition. The pipes are conveyed to the end of the conveying rollers by their own weight. The two types of pipes will move between the two first push plates and the two second push plates respectively. Then, the operation of the feeding motor drives the first rotating rod to rotate. The rotation of the first push plate is used to push and convey one type of pipe to the middle of the first V-shaped frame. At the same time, the meshing of the second gear with the first gear and the meshing of the third gear with the second gear will drive the other type of pipe to be conveyed synchronously to the middle of the second V-shaped frame. The arrangement of the first V-shaped frame and the second V-shaped frame makes the central axis of the two pipes coincide.

[0016] S2. The position of the two pipes is detected by a vision camera. The adjustment frame is lowered by the first hydraulic rod, and the first friction roller and the second friction roller are respectively attached to the surface of the two pipes. The first moving motor drives the first friction roller to rotate, which will cause one of the pipes to slide in the middle of the first V-shaped frame. The second moving motor drives the second friction roller to rotate, which will cause the other pipe to slide in the middle of the second V-shaped frame. The position of the two pipes is detected by a vision camera, and the operation of the first moving motor and the second moving motor are controlled respectively to move the contact surface of the two pipe ends to the center and set the contact surface of the two pipe ends to correspond to the welding assembly.

[0017] S3. Before moving the position of the pipe fittings in process S2, if the ends of two or one of the pipe fittings are not between the first friction roller and the second friction roller, the adjusting motor can drive the screw to rotate. The screw and the moving frame are connected by threads, and the moving frame is limited by the limiting rod. This will drive the adjusting frame to move left and right between the two limiting rods, so as to move the first friction roller and the second friction roller to the end of the pipe fitting.

[0018] S4. After the contact surfaces of the ends of the two pipe fittings are aligned with the welding assembly, the two pipe fittings can be welded together by the operation of the welding assembly. At the same time, the mounting base is lowered by the second hydraulic rod, and the rotating rubber roller is brought into contact with the surface of one of the pipe fittings. The rotating rubber roller is rotated by the rotating motor, which will drive the rotation of the two pipe fittings for circumferential welding of the two pipe fittings.

[0019] S5. After welding is completed, the rotating rubber roller, the first friction roller and the second friction roller are reset, and then the bearing frame is rotated by the third hydraulic rod. The welded pipe will be unloaded through the inclined surface of the bearing frame.

[0020] This invention provides a mechanically automated welding device and welding method thereof, which have the following beneficial effects:

[0021] (1) The present invention places two pipes of different diameters on conveying rollers on both sides of a partition. The pipes are conveyed to the end of the conveying rollers by gravity. The two types of pipes will move between the two first push plates and the two second push plates respectively. Then, the operation of the feeding motor drives the first rotating rod to rotate. The rotation of the first push plate is used to push and convey one type of pipe to the middle of the first V-shaped frame. At the same time, the meshing of the second gear with the first gear and the meshing of the third gear with the second gear will drive the second push plate to rotate. The other type of pipe is simultaneously conveyed to the middle of the second V-shaped frame. The arrangement of the first V-shaped frame and the second V-shaped frame makes the central axis of the two pipes coincide, which facilitates the feeding of the pipes.

[0022] (2) The present invention detects the position of the two pipes by using a vision camera, lowers the adjustment frame by using the first hydraulic rod, and puts the first friction roller and the second friction roller into contact with the surface of the two pipes respectively. The operation of the first moving motor and the second moving motor respectively drives the pipes to move, so as to center the contact surface of the two pipes and set the contact surface of the two pipes to correspond to the welding assembly, which facilitates the positioning and welding of the two pipes. Attached Figure Description

[0023] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0024] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is the third schematic diagram of the overall structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first fixing frame of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the second fixing frame of the present invention;

[0028] Figure 6 This is a schematic diagram of the adjustment frame of the present invention;

[0029] In the diagram: 1. Feeding platform; 2. Partition plate; 3. Conveying roller; 4. First fixed frame; 5. Mounting frame; 6. First rotating rod; 7. Second rotating rod; 8. First pusher plate; 9. Second pusher plate; 10. Bearing frame; 11. First V-shaped frame; 12. Second V-shaped frame; 13. Feeding motor; 14. First gear; 15. Second gear; 16. Third gear; 17. Second fixed frame; 18. Moving frame; 19. First hydraulic rod; 20. Adjusting frame; 21. First friction roller; 22. Second friction roller; 23. First moving motor; 24. Second moving motor; 25. Third hydraulic rod; 26. Vision camera; 27. Welding assembly; 28. Second hydraulic rod; 29. ​​Mounting base; 30. Rotating motor; 31. Rotating rubber roller; 32. Adjusting motor; 33. Screw; 34. Limiting rod; 35. Ball bearing; 36. Mounting rod. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] This invention provides a technical solution: such as Figures 1 to 6As shown, in this embodiment, a mechanical automated welding device includes a conveying platform 1. A partition 2 is fixedly installed in the middle of the conveying platform 1. Conveying rollers 3 are fixedly installed at equal intervals on both sides of the partition 2 inside the conveying platform 1. The conveying rollers 3 are inclined and are used to convey pipe fittings. A first fixing frame 4 is fixedly installed at one end of the conveying rollers 3 on the conveying platform 1. An mounting frame 5 is fixedly installed on the inner wall of the first fixing frame 4. A first rotating rod 6 and a second rotating rod 7 are rotatably installed on both sides of the mounting frame 5 and between the two ends of the first fixing frame 4, respectively. The first rotating rod 6 and the second rotating rod 7 rotate simultaneously, but at different frequencies. A first pusher plate 8 is fixedly installed in a ring array around the central axis of the first rotating rod 6. Several groups of first pusher plates 8 form a gear-like structure, with the pipe fitting positioned between two first pusher plates 8. A second pusher plate 9 is fixedly installed in a ring array around the central axis of the second rotating rod 7. Several groups of second pusher plates 9 form a gear-like structure. The two pusher plates (9 sets) have a gear-like structure. The pipe fitting is located between the two pusher plates (9 sets). One end of the conveying platform (1) is rotatably mounted with a bearing frame (10) via a pivot pin. A first V-shaped frame (11) and a second V-shaped frame (12) are fixedly mounted at equal intervals at the middle of the bearing frame (10) corresponding to the positions of the first rotating rod (6) and the second rotating rod (7). The first V-shaped frame (11) and the second V-shaped frame (12) have different heights. The first V-shaped frame (11) and the second V-shaped frame (12) are used to position the two pipe fittings so that their central axes coincide. Two pipe fittings of different diameters are placed on separate... On the conveying rollers 3 on both sides of plate 2, the pipes are conveyed to the ends of the conveying rollers 3 by gravity. The two types of pipes will move between the two first push plates 8 and the two second push plates 9 respectively. Then, by rotating the first push plates 8 and the second push plates 9, the two pipes are conveyed to the middle of the first V-shaped frame 11 and the second V-shaped frame 12. The central axis of the two pipes is aligned by the setting of the first V-shaped frame 11 and the second V-shaped frame 12, which is used to facilitate the coaxial setting of two pipes with different diameters and to facilitate the feeding of pipes.

[0032] like Figures 1 to 6 As shown, a feeding motor 13 is fixedly installed at one end of the first fixed frame 4. The output end of the feeding motor 13 passes through the first fixed frame 4 and is fixedly connected to the first rotating rod 6. A first gear 14 is fixedly installed at the end of the first rotating rod 6 away from the feeding motor 13. A second gear 15 is rotatably installed in the middle of the mounting frame 5. The second gear 15 meshes with the first gear 14. A third gear 16 is fixedly installed at the end of the second rotating rod 7 near the first gear 14. The third gear 16 meshes with the second gear 15. The transmission ratio of the third gear 16 and the second gear 15 is related to the diameter ratio of the two pipe fittings. Since the diameters of the two pipe fittings are different, the rotation angles of the first rotating rod 6 and the second rotating rod 7 are different when the pipe fittings are unloaded, which is used to ensure that the two pipe fittings are unloaded at the same time.

[0033] The operation of the feeding motor 13 drives the first rotating rod 6 to rotate, and the rotation of the first pusher plate 8 is used to push and convey one type of pipe fitting. At the same time, the meshing of the second gear 15 with the first gear 14 and the meshing of the third gear 16 with the second gear 15 will drive the second pusher plate 9 to rotate, which is used to synchronously convey another type of pipe fitting to the middle of the second V-shaped frame 12, so as to realize the simultaneous feeding of two pipe fittings.

[0034] like Figures 1 to 6 As shown, the transmission ratio between the second gear 15 and the first gear 14 is 1:1.

[0035] The 1:1 transmission engagement between the second gear 15 and the first gear 14 is used to stably transmit the rotational torque to the first rotating rod 6.

[0036] like Figures 1 to 6 As shown, a second fixed frame 17 is fixedly installed above the support frame 10 on the material conveying platform 1. A movable frame 18 is slidably installed in the middle of the second fixed frame 17. A first hydraulic rod 19 is symmetrically fixedly installed on the top of the movable frame 18. An adjusting frame 20 is fixedly installed through the movable frame 18 at the moving ends of the two first hydraulic rods 19. A first friction roller 21 and a second friction roller 22 are rotatably installed on the bottom of both sides of the adjusting frame 20, respectively. A first moving motor 23 and a second moving motor 24 for driving the first friction roller 21 and the second friction roller 22 are fixedly installed on one side of the adjusting frame 20, respectively, at the positions corresponding to the first friction roller 21 and the second friction roller 22. A vision camera 26 is fixedly installed in the middle of the adjusting frame 20. A welding assembly 27 is fixedly installed on one side of the middle of the adjusting frame 20.

[0037] The position of the two pipes is detected by the vision camera 26. The adjustment frame 20 is lowered by the first hydraulic rod 19, and the first friction roller 21 and the second friction roller 22 are respectively attached to the surface of the two pipes. The operation of the first moving motor 23 and the second moving motor 24 respectively drives the pipes to move, so as to center the contact surface of the two pipe ends and set the contact surface of the two pipe ends to correspond to the welding assembly 27. The operation of the welding assembly 27 can weld the two pipes together, realizing the positioning welding of the two pipes.

[0038] like Figures 1 to 6 As shown, a second hydraulic rod 28 is fixedly installed at the middle of one end of the second fixed frame 17. The moving end of the second hydraulic rod 28 passes through the second fixed frame 17 and is fixedly installed on a mounting base 29. A rotating motor 30 is fixedly installed on one side of the mounting base 29. A rotating rubber roller 31 is fixedly installed at the output end of the rotating motor 30 through the mounting base 29.

[0039] The second hydraulic rod 28 drives the mounting base 29 to descend, bringing the rotating rubber roller 31 into contact with the surface of one of the pipe fittings. The rotating motor 30 controls the rotation of the rotating rubber roller 31, which in turn drives the rotation of both pipe fittings for circumferential welding.

[0040] like Figures 1 to 6 As shown, a positioning motor 32 is fixedly installed on one side of the second fixed frame 17, and a screw 33 is rotatably installed in the middle of the second fixed frame 17 through a bearing. The output end of the positioning motor 32 is fixedly connected to one end of the screw 33. The screw 33 is threadedly connected to the middle of the movable frame 18. Limiting rods 34 are symmetrically fixedly installed inside the second fixed frame 17, and the movable frame 18 is slidably installed between the two limiting rods 34.

[0041] The adjusting motor 32 drives the screw 33 to rotate. The screw 33 is connected to the moving frame 18 by a thread, and the moving frame 18 is limited by the limiting rod 34. This causes the adjusting frame 20 to move left and right between the two limiting rods 34, so as to move the first friction roller 21 and the second friction roller 22 to the end of the pipe fitting.

[0042] like Figures 1 to 6 As shown, the inner walls of the first V-shaped frame 11 and the second V-shaped frame 12 are both equidistantly fitted with rolling balls 35.

[0043] By having the ball bearing 35 contact the pipe fitting, the stability of the pipe fitting's movement within the first V-shaped bracket 11 and the second V-shaped bracket 12 is improved.

[0044] like Figures 1 to 6 As shown, a mounting rod 36 is fixedly installed at the bottom position of the material conveying platform 1 corresponding to the support frame 10. A third hydraulic rod 25 is fixedly installed in the middle of the mounting rod 36. The moving end of the third hydraulic rod 25 is rotatably connected to the middle of the support frame 10 through a shaft pin.

[0045] The bearing frame 10 is rotated by the third hydraulic rod 25, and the welded pipe fittings will be discharged through the inclined surface of the bearing frame 10.

[0046] like Figures 1 to 6 As shown, the two ends of the support frame 10 are inclined.

[0047] When feeding the pipe into the first V-frame 11 and the second V-frame 12, the feeding of the pipe can be limited by the two ends of the support frame 10 to prevent the pipe from falling off the support frame 10.

[0048] like Figures 1 to 6 As shown, a welding method using a mechanically automated welding apparatus according to any one of claims 1-9 includes the following steps:

[0049] S1. Two pipes of different diameters are placed on the conveying rollers 3 on both sides of the partition 2. The pipes are conveyed to the end of the conveying rollers 3 by their own weight. The two types of pipes will move between the two first push plates 8 and the two second push plates 9 respectively. Then, the operation of the feeding motor 13 drives the first rotating rod 6 to rotate. The rotation of the first push plate 8 is used to push and convey one type of pipe to the middle of the first V-shaped frame 11. At the same time, the meshing of the second gear 15 with the first gear 14 and the meshing of the third gear 16 with the second gear 15 will drive the second push plate 9 to rotate. The other type of pipe is simultaneously conveyed to the middle of the second V-shaped frame 12. The central axis of the two pipes is aligned by the arrangement of the first V-shaped frame 11 and the second V-shaped frame 12.

[0050] S2. The position of the two pipes is detected by the vision camera 26. The adjustment frame 20 is lowered by the first hydraulic rod 19, and the first friction roller 21 and the second friction roller 22 are respectively attached to the surface of the two pipes. The first moving motor 23 drives the first friction roller 21 to rotate, which will cause one of the pipes to slide in the middle of the first V-shaped frame 11. The second moving motor 24 drives the second friction roller 22 to rotate, which will cause the other pipe to slide in the middle of the second V-shaped frame 12. The position of the two pipes is detected by the vision camera 26, and the operation of the first moving motor 23 and the second moving motor 24 is controlled respectively to move the contact surface of the ends of the two pipes to the center and set the contact surface of the ends of the two pipes to correspond to the welding assembly 27.

[0051] S3. Before moving the position of the pipe fittings in process S2, if the ends of two or one of the pipe fittings are not between the first friction roller 21 and the second friction roller 22, the adjusting motor 32 can drive the screw 33 to rotate. Through the threaded connection between the screw 33 and the moving frame 18 and the limiting rod 34 limiting the moving frame 18, the adjusting frame 20 will move left and right between the two limiting rods 34 to move the first friction roller 21 and the second friction roller 22 to the end of the pipe fitting.

[0052] S4. After the contact surfaces of the ends of the two pipe fittings are aligned with the welding assembly 27, the two pipe fittings can be welded together by the operation of the welding assembly 27. At the same time, the mounting base 29 is lowered by the second hydraulic rod 28, and the rotating rubber roller 31 is brought into contact with the surface of one of the pipe fittings. The rotating motor 30 controls the rotation of the rotating rubber roller 31, which drives the rotation of the two pipe fittings for circumferential welding of the two pipe fittings.

[0053] S5. After welding is completed, the rotating rubber roller 31, the first friction roller 21 and the second friction roller 22 are reset, and then the bearing frame 10 is driven to rotate by the third hydraulic rod 25. The welded pipe will be unloaded through the inclined surface of the bearing frame 10.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanically automated welding device, characterized in that: The system includes a conveying platform (1), with a partition (2) fixedly installed in the middle of the conveying platform (1). Conveying rollers (3) are fixedly installed at equal intervals on both sides of the partition (2) inside the conveying platform (1). The conveying rollers (3) are inclined and are used to convey pipe fittings. A first fixing frame (4) is fixedly installed at one end of the conveying roller (3) on the conveying platform (1). An mounting frame (5) is fixedly installed on the inner wall of the first fixing frame (4). A first rotating rod (6) and a second rotating rod (7) are rotatably installed on both sides of the mounting frame (5) and between the two ends of the first fixing frame (4). The first rotating rod (6) and the second rotating rod (7) rotate simultaneously, but at different frequencies. The middle part of the first rotating rod (6) is arranged in a ring around the central axis of the first rotating rod (6). A first pusher plate (8) is fixedly installed. Several first pusher plates (8) are arranged in a gear-like structure. The pipe fitting is located between two first pusher plates (8). The second pusher plate (9) is fixedly installed in a ring array with the central axis of the second pusher plate (7) as the axis. Several second pusher plates (9) are arranged in a gear-like structure. The pipe fitting is located between two second pusher plates (9). One end of the conveying table (1) is rotatably installed with a bearing frame (10) through a shaft pin. The middle of the bearing frame (10) is fixedly installed with a first V-shaped frame (11) and a second V-shaped frame (12) at equal intervals corresponding to the positions of the first pusher plate (6) and the second pusher plate (7). The heights of the first V-shaped frame (11) and the second V-shaped frame (12) are different. The first V-shaped frame (11) and the second V-shaped frame (12) are used to position the two pipe fittings with their central axes aligned.

2. The automated welding device according to claim 1, characterized in that: A feeding motor (13) is fixedly installed at one end of the first fixed frame (4). The output end of the feeding motor (13) passes through the first fixed frame (4) and is fixedly connected to the first rotating rod (6). A first gear (14) is fixedly installed at the end of the first rotating rod (6) away from the feeding motor (13). A second gear (15) is rotatably installed in the middle of the mounting frame (5). The second gear (15) meshes with the first gear (14). A third gear (16) is fixedly installed at the end of the second rotating rod (7) close to the first gear (14). The third gear (16) meshes with the second gear (15).

3. The automated welding device according to claim 2, characterized in that: The transmission ratio between the second gear (15) and the first gear (14) is 1:

1.

4. The automated welding device according to claim 3, characterized in that: The material conveying platform (1) is fixedly installed above the support frame (10) with a second fixed frame (17). A movable frame (18) is slidably installed in the middle of the second fixed frame (17). A first hydraulic rod (19) is symmetrically fixedly installed on the top of the movable frame (18). An adjustment frame (20) is fixedly installed through the movable frame (18) at the moving ends of the two first hydraulic rods (19). A first friction roller (21) and a second friction roller (22) are rotatably installed on the bottom of both sides of the adjustment frame (20). A first moving motor (23) and a second moving motor (24) for driving the first friction roller (21) and the second friction roller (22) are fixedly installed on one side of the adjustment frame (20) at the positions corresponding to the first friction roller (21) and the second friction roller (22). A vision camera (26) is fixedly installed in the middle of the adjustment frame (20). A welding assembly (27) is fixedly installed on one side of the middle of the adjustment frame (20).

5. The automated welding device according to claim 4, characterized in that: A second hydraulic rod (28) is fixedly installed at the middle of one end of the second fixed frame (17). The moving end of the second hydraulic rod (28) passes through the second fixed frame (17) and is fixedly installed with a mounting base (29). A rotating motor (30) is fixedly installed on one side of the mounting base (29). A rotating rubber roller (31) is fixedly installed at the output end of the rotating motor (30) through the mounting base (29).

6. The automated welding device according to claim 5, characterized in that: A positioning motor (32) is fixedly installed on one side of the second fixed frame (17). A screw (33) is rotatably installed in the middle of the second fixed frame (17) through a bearing. The output end of the positioning motor (32) is fixedly connected to one end of the screw (33). The screw (33) is threadedly connected to the middle of the movable frame (18). Limiting rods (34) are symmetrically fixedly installed inside the second fixed frame (17). The movable frame (18) is slidably installed between the two limiting rods (34).

7. The automated welding device according to claim 6, characterized in that: The inner walls of the first V-shaped frame (11) and the second V-shaped frame (12) are both equidistantly fitted with ball bearings (35).

8. The automated welding device according to claim 7, characterized in that: The material conveying platform (1) is fixedly installed with an installation rod (36) at the bottom position of the bearing frame (10). A third hydraulic rod (25) is fixedly installed in the middle of the installation rod (36). The moving end of the third hydraulic rod (25) is rotatably connected to the middle of the bearing frame (10) through a shaft pin.

9. The automated welding device according to claim 8, characterized in that: The two ends of the support frame (10) are inclined.

10. A welding method using the automated welding apparatus of claim 9, characterized in that: Includes the following steps: S1. Place two pipes of different diameters on the conveying rollers (3) on both sides of the partition (2). The pipes are conveyed to the end of the conveying rollers (3) by gravity. The two types of pipes will move between the two first push plates (8) and the two second push plates (9). Then, the first rotating rod (6) is driven to rotate by the operation of the feeding motor (13). The rotation of the first push plate (8) is used to push and convey one type of pipe. This pipe is conveyed to the middle of the first V-shaped frame (11). At the same time, the meshing of the second gear (15) with the first gear (14) and the meshing of the third gear (16) with the second gear (15) will drive the other type of pipe to be conveyed to the middle of the second V-shaped frame (12). The central axis of the two pipes is aligned by the arrangement of the first V-shaped frame (11) and the second V-shaped frame (12). S2. The position of the two pipes is detected by the vision camera (26). The adjustment frame (20) is lowered by the first hydraulic rod (19). The first friction roller (21) and the second friction roller (22) are respectively attached to the surface of the two pipes. The first moving motor (23) drives the first friction roller (21) to rotate, which will cause one of the pipes to slide in the middle of the first V-shaped frame (11). The second moving motor (24) drives the second friction roller (22) to rotate, which will cause the other pipe to slide in the middle of the second V-shaped frame (12). The position of the two pipes is detected by the vision camera (26), and the operation of the first moving motor (23) and the second moving motor (24) is controlled respectively to move the contact surface of the ends of the two pipes to the center and set the contact surface of the ends of the two pipes to correspond to the welding assembly (27). S3. Before moving the position of the pipe fittings in process S2, when the ends of two or one of the pipe fittings are not between the first friction roller (21) and the second friction roller (22), the screw (33) can be rotated by the adjustment motor (32). The screw (33) is connected to the moving frame (18) by a thread and the limiting rod (34) limits the moving frame (18), which will drive the adjustment frame (20) to move left and right between the two limiting rods (34) to move the first friction roller (21) and the second friction roller (22) to the end of the pipe fitting. S4. After the contact surfaces of the ends of the two pipe fittings are aligned with the welding assembly (27), the two pipe fittings can be welded by the operation of the welding assembly (27). At the same time, the mounting base (29) is lowered by the second hydraulic rod (28), and the rotating rubber roller (31) is brought into contact with the surface of one of the pipe fittings. The rotating motor (30) controls the rotating rubber roller (31) to rotate, which will drive the rotation of the two pipe fittings for circumferential welding of the two pipe fittings. S5. After welding is completed, the rotating rubber roller (31), the first friction roller (21) and the second friction roller (22) are reset, and then the bearing frame (10) is driven to rotate by the third hydraulic rod (25). The welded pipe will be unloaded through the inclined surface of the bearing frame (10).

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