Automatic welding device

Abstract

The invention provides an automatic welding device, and relates to the technical field of pipe machining, a multi-path fixing mechanism comprises a self-adaptive displacement supporting mechanism and an extrusion type fixing mechanism, the self-adaptive displacement supporting mechanism is arranged on a rack bedplate, the extrusion type fixing mechanism is arranged on the self-adaptive displacement supporting mechanism, and the self-adaptive displacement supporting mechanism is arranged on the rack bedplate. The multi-path fixing mechanism comprises a self-adaptive displacement supporting mechanism and an extrusion type fixing mechanism, the self-adaptive displacement supporting mechanism is arranged on the frame bedplate, and the extrusion type fixing mechanism is arranged on the self-adaptive displacement supporting mechanism and used for extruding and fixing the pipeline. According to the pipeline welding device, pipelines with various diameters can be fixed through the multi-diameter fixing mechanism, the adaptability is high, rotation of the pipelines during welding is avoided through the surrounding type welding mechanism, the phenomenon that the welding positions are poor in welding due to vibration is reduced, the pipelines can be annularly welded through the surrounding type welding mechanism, and the welding effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, and in particular to an automatic welding device. Background Art

[0002] When two pipes are connected together, a welding machine is needed to weld their joints; The existing process is to place the pipe on the support seat, and then connect and fix the two pipes. After fixation, the pipes are driven to rotate, and the joints of the two pipes are welded by the welding head. In the above process, the pipeline is easily vibrated by rotating the pipeline, so the welding part is prone to poor welding when vibrating. In addition, the existing pipes are fixed by means of a half ring, which can only fix pipes of one diameter and has poor adaptability; Therefore, in response to the above problems, we propose an automated welding device. Summary of the invention

[0003] The present invention aims to solve the problems in the prior art that the rotation of the pipeline easily causes vibration, resulting in poor welding, and the pipeline fixer can only fix one pipeline diameter. We propose an automatic welding device.

[0004] The present invention provides an automated welding device, comprising a platform plate and a support seat, wherein two support seats are provided and symmetrically arranged on both sides of the platform plate; The platform plate is provided with a multi-diameter fixing mechanism and a surrounding welding mechanism. The multi-diameter fixing mechanism is arranged on one side of the support seat for adaptively fixing pipes of different diameters. The surrounding welding mechanism is arranged between two support seats for annular welding of the pipe.

[0005] According to a further improvement of the present invention, the multi-path fixing mechanism includes an adaptive displacement support mechanism and an extrusion type fixing mechanism. The adaptive displacement support mechanism is arranged on a frame plate, and the extrusion type fixing mechanism is arranged on the adaptive displacement support mechanism for extruding and fixing the pipeline.

[0006] A further improvement scheme of the present invention, the adaptive displacement support mechanism includes a vertical support base plate, an L-shaped support seat, a telescopic rod, and a spring, the vertical support base plate is fixedly connected to the platform plate, the L-shaped support seat is slidably arranged on the vertical support base plate through a sliding mechanism, the two ends of the telescopic rod are respectively connected to the lower end surface of the L-shaped support seat and the upper end surface of the platform plate, and the spring is sleeved on the surface of the telescopic rod.

[0007] A further improvement scheme of the present invention, the extrusion type fixing mechanism includes a hydraulic telescopic rod, a connecting disc, a rotating plate, an arc-shaped pressure plate mechanism, and an adjustment frame mechanism, the hydraulic telescopic rod is fixedly connected to the L-shaped support seat, the connecting disc is fixedly connected to the protruding end of the hydraulic telescopic rod, the rotating plates are arranged in a surrounding array with the center position of the connecting disc as a reference, each of the rotating plates is hinged to the connecting disc by a hinge, the arc-shaped pressure plate mechanism is arranged at the end of the rotating plate away from the connecting disc, and the adjustment frame mechanism passes through the L-shaped support seat and is movably connected to the rotating plate.

[0008] According to a further improved solution of the present invention, the arc-shaped pressure plate mechanism comprises an arc-shaped pressure plate and a tension spring, wherein the arc-shaped pressure plate is rotatably connected to the end of the rotating plate away from the connecting disc through a hinge seat, and the two ends of the tension spring are respectively connected to the arc-shaped pressure plate and the rotating plate; A further improvement of the present invention is that the adjustment frame mechanism comprises a rectangular frame and a baffle, the cross section of the rectangular frame is circular, a movable groove is provided on the rotating plate, the rectangular frame passes through the movable groove, the rectangular frame passes through the L-shaped support seat, the baffle is fixedly connected to the rectangular frame, and the baffle is provided on a side of the L-shaped support seat away from the support seat; A further improvement of the present invention is that the surrounding welding mechanism includes a lower support seat, an upper support seat, and a welding mechanism. The lower support seat is fixedly connected to the base plate, and the upper support seat is connected to the upper end of the lower support seat through a rotating mechanism. The welding mechanism is arranged on the lower support seat and runs around the upper support seat and the lower support seat.

[0009] A further improvement scheme of the present invention is that the welding mechanism includes a driving motor, a rotating shaft, a gear, a half-toothed ring, and a welding head. The driving motor is fixedly connected to the lower support seat, and the lower support seat is provided with a accommodating bin. The rotating shaft is fixedly connected to the output end of the driving motor and extends into the accommodating bin. The gear is arranged in the accommodating bin and is coaxially fixedly connected to the rotating shaft. The lower support seat is provided with a semi-annular groove and communicated with the accommodating bin. The half-toothed ring is annularly slidably arranged in the semi-annular groove and meshes with the gear. The welding head is connected to the half-toothed ring.

[0010] A further improvement scheme of the present invention, the rotating mechanism comprises an L-shaped extension plate, an extension plate, a rotating rod, a second drive motor, and a pulley mechanism, the L-shaped extension plate is fixedly connected to the lower support seat, the extension plate is fixedly connected to the upper support seat, a U-shaped groove is provided on the L-shaped extension plate, the end of the extension plate away from the upper support seat is connected to the U-shaped groove through a rotating rod, the rotating rod is fixedly connected to the extension plate and movably passes through the L-shaped extension plate, the second drive motor is fixedly connected to the lower support seat through a support seat, and the output end of the second drive motor is connected to the rotating rod through a pulley mechanism; The pulley mechanism comprises a pulley and a connecting belt. Two pulleys are provided and are coaxially fixedly connected to the rotating rod and the output end of the second driving motor respectively. The connecting belt is connected to the two pulleys.

[0011] A further improvement of the present invention is that the upper support seat is provided with a second semi-annular slide groove, the second semi-annular slide groove is provided with a second semi-toothed ring that slides in an annular manner with the upper support seat, the second semi-toothed ring is butted with the first semi-toothed ring, and the upper support seat is provided with a fixing mechanism for fixing the second semi-toothed ring; The fixing mechanism includes a U-shaped frame, an electric telescopic rod, and a pressure plate. The U-shaped frame is fixedly connected to the upper support seat, the electric telescopic rod is fixedly connected to the U-shaped frame, and the pressure plate is fixedly connected to the protruding end of the electric telescopic rod. The upper support seat is provided with a pressure plate groove that communicates with the second semi-annular slide groove, and the pressure plate groove is used for the pressure plate to pass through and press the second semi-toothed ring for fixing.

[0012] Beneficial effects of the present invention: The present invention provides an automated welding device: 1. The multi-diameter fixing mechanism can fix pipes of various diameters, which has strong adaptability; Second, the surrounding welding mechanism avoids the rotation of the pipe during welding, thereby reducing the phenomenon of poor welding at the welding point due to vibration; 3. The surrounding welding mechanism can be used to perform circular welding on the pipeline to ensure the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a structural diagram of an automatic welding device of the present invention.

[0014] Figure 2 The structure of a multi-path fixing mechanism of an automatic welding device of the present invention Figure 1 .

[0015] Figure 3 The structure of a multi-path fixing mechanism of an automatic welding device of the present invention Figure 2 .

[0016] Figure 4 An automatic welding device of the present invention Figure 3 Enlarged view of point A in the middle.

[0017] Figure 5 The present invention is a structural diagram of an adjustment frame mechanism of an automatic welding device.

[0018] Figure 6 The structure of a surrounding welding mechanism of an automatic welding device of the present invention is Figure 1 .

[0019] Figure 7The present invention is a cross-sectional structural diagram of a surrounding welding mechanism of an automated welding device.

[0020] Figure 8 The structure of a surrounding welding mechanism of an automatic welding device of the present invention is Figure 2 .

[0021] In the attached figure: 1, the platform plate; 2, the support seat; 3, the multi-path fixing mechanism; 4, the surrounding welding mechanism; 5, the adaptive displacement support mechanism; 6, the extrusion fixing mechanism; 7, the vertical support bottom plate; 8, the L-shaped support seat; 9, the telescopic rod; 10, the spring; 11, the sliding mechanism; 12, the hydraulic telescopic rod; 13, the connecting disc; 14, the rotating plate; 15, the arc pressure plate mechanism; 16, the adjustment frame mechanism; 17, the hinge; 18, the arc pressure plate; 19, the tension spring; 20, the hinge Seat; 21. rectangular frame; 22. baffle; 23. movable slot; 24. lower support seat; 25. upper support seat; 26. welding mechanism; 27. rotating mechanism; 28. driving motor 1; 29. ​​rotating shaft; 30. gear; 31. half-toothed ring 1; 32. welding head; 33. L-shaped extension plate; 34. extension plate; 35. rotating rod; 36. driving motor 2; 37. pulley mechanism; 38. half-toothed ring 2; 39. U-shaped frame; 40. electric telescopic rod; 41. pressure plate; 42. pressure plate slot. DETAILED DESCRIPTION

[0022] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0023] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] according to Figure 1-Figure 8 An automatic welding device is shown, comprising a platform plate 1 and a support seat 2. Two support seats 2 are provided, which are symmetrically arranged on both sides of the platform plate 1, and the support seats 2 are supported by the platform plate 1.

[0026] A multi-diameter fixing mechanism 3 and a surrounding welding mechanism 4 are provided on the platform plate 1. The multi-diameter fixing mechanism 3 is arranged on one side of the support seat 2 and is used to adaptively fix pipes of different diameters. The multi-diameter fixing mechanism 3 includes an adaptive displacement support mechanism 5 and an extrusion type fixing mechanism 6. The adaptive displacement support mechanism 5 is arranged on the platform plate 1, and the extrusion type fixing mechanism 6 is arranged on the adaptive displacement support mechanism 5 and is used to extrude and fix the pipe.

[0027] The adaptive displacement support mechanism 5 includes a vertical support base plate 7, an L-shaped support seat 8, a telescopic rod 9, and a spring 10. The vertical support base plate 7 is fixedly connected to the platform plate 1. The L-shaped support seat 8 is slidably arranged on the vertical support base plate 7 through a sliding mechanism 11. The L-shaped support seat 8 can slide up and down through the sliding mechanism 11. The two ends of the telescopic rod 9 are respectively connected to the lower end surface of the L-shaped support seat 8 and the upper end surface of the platform plate 1. The spring 10 is sleeved on the surface of the telescopic rod 9. The extrusion force of the spring 10 exerts an upward extrusion force on the L-shaped support seat 8, thereby resetting the L-shaped support seat 8.

[0028] The extrusion type fixing mechanism 6 includes a hydraulic telescopic rod 12, a connecting disc 13, a rotating plate 14, an arc-shaped pressing plate mechanism 15, and an adjusting frame mechanism 16. The hydraulic telescopic rod 12 is fixedly connected to the L-shaped support seat 8, the connecting disc 13 is fixedly connected to the extended end of the hydraulic telescopic rod 12, and the rotating plate 14 is surrounded by four arrays with the center position of the connecting disc 13 as the reference. Each rotating plate 14 is hinged to the connecting disc 13 through a hinge 17. The arc-shaped pressing plate mechanism 15 is arranged at the end of the rotating plate 14 away from the connecting disc 13. The adjusting frame mechanism 16 passes through the L-shaped support seat 8 and is movably connected to the rotating plate 14. Then, the arc pressure plate mechanism 15 includes an arc pressure plate 18 and a tension spring 19. The arc pressure plate 18 is rotatably connected to the end of the rotating plate 14 away from the connecting disc 13 through a hinge seat 20. The two ends of the tension spring 19 are respectively connected to the arc pressure plate 18 and the rotating plate 14. The adjustment frame mechanism 16 includes a rectangular frame 21 and a baffle 22. The cross-section of the rectangular frame 21 is circular. A movable groove 23 is provided on the rotating plate 14. The rectangular frame 21 passes through the movable groove 23. The rectangular frame 21 passes through the L-shaped support seat 8. The baffle 22 is fixedly connected to the rectangular frame 21. The baffle 22 is arranged on the side of the L-shaped support seat 8 away from the support seat 2.

[0029] The surrounding welding mechanism 4 is arranged between the two support seats 2 and is used for annular welding of the pipeline. The surrounding welding mechanism 4 includes a lower support seat 24, an upper support seat 25, and a welding mechanism 26. The lower support seat 24 is fixedly connected to the frame plate 1, and the upper support seat 25 is connected to the upper end of the lower support seat 24 through a rotating mechanism 27. The welding mechanism 26 is arranged on the lower support seat 24 and runs around the upper support seat 25 and the lower support seat 24. The welding mechanism 26 includes a driving motor 28, a rotating shaft 29, a gear 30, a half gear ring 31, and a welding head 32. The driving motor 28 is fixed The lower support seat 24 is connected to a storage bin, a rotating shaft 29 is fixedly connected to the output end of the driving motor 28 and extends into the storage bin, a gear 30 is disposed in the storage bin and is coaxially fixedly connected to the rotating shaft 29, a semi-annular slide groove is disposed on the lower support seat 24 and communicates with the storage bin, a semi-toothed ring 1 31 is annularly slidably disposed in the semi-annular slide groove and meshes with the gear 30, a welding head 32 is connected to the semi-toothed ring 1 31, a semi-annular slide groove 2 is disposed on the upper support seat 25, and a semi-toothed ring 1 is disposed in the semi-annular slide groove 2 and is meshed with the gear 30, a welding head 32 is connected to the semi-toothed ring 1 31, and a semi-annular slide groove 2 is disposed in the semi-annular slide groove 2 and is provided with a semi-toothed ring 31 that slides in annular manner with the upper support seat 25. Ring 2 38, the semi-toothed ring 2 38 is docked with the semi-toothed ring 1 31, and a fixing mechanism for fixing the semi-toothed ring 2 38 is provided on the upper support seat 25. The hydraulic telescopic rod 12 is started, driving the connecting disc 13 to move, driving the rotating plate 14, the rectangular frame 21, and the baffle 22 to move, and one end enters the interior of the pipeline. The baffle 22 is blocked by the L-shaped support seat 8 and stops moving. The rotating plate 14 continues to move and rotate, driving the arc pressure plate mechanism 15 to move, and the arc pressure plate 18 squeezes the inner wall of the pipeline to fix the pipeline. The fixing mechanism includes a U-shaped frame 39, electric telescopic rod 40, pressure plate 41, U-shaped frame 39 is fixedly connected to the upper support seat 25, the electric telescopic rod 40 is fixedly connected to the U-shaped frame 39, the pressure plate 41 is fixedly connected to the protruding end of the electric telescopic rod 40, and the upper support seat 25 is provided with a pressure plate groove 42 which is communicated with the semi-annular slide groove 2, and the pressure plate groove 42 is used for the pressure plate 41 to pass through and press the semi-toothed ring 2 38 for fixing. The electric telescopic rod 40 is started, driving the pressure plate 41 to move downward, enter the pressure plate groove 42, press the semi-toothed ring 2 38, and fix the semi-toothed ring 2 38 through the pressure plate 41.

[0030] The rotating mechanism 27 includes an L-shaped extension plate 33, an extension plate 34, a rotating rod 35, a second drive motor 36, and a pulley mechanism 37. The L-shaped extension plate 33 is fixedly connected to the lower support seat 24, and the extension plate 34 is fixedly connected to the upper support seat 25. A U-shaped groove is provided on the L-shaped extension plate 33. The end of the extension plate 34 away from the upper support seat 25 is connected to the U-shaped groove through the rotating rod 35. The rotating rod 35 is fixedly connected to the extension plate 34 and movably passes through the L-shaped extension plate 33. The second drive motor 36 is fixedly connected to the lower support seat 24 through the support seat. The output end of the second drive motor 36 is connected to the rotating rod 35 through the pulley mechanism 37. 7 includes a pulley and a connecting belt. Two pulleys are provided, which are coaxially fixedly connected to the rotating rod 35 and the output end of the driving motor 2 36 respectively. The connecting belt is connected to the two pulleys. The driving motor 1 28 is started, driving the rotating shaft 29 to rotate, driving the gear 30 to rotate, driving the semi-toothed ring 1 31 to rotate, thereby driving the semi-toothed ring 2 38 to rotate, and when the semi-toothed ring 2 38 rotates to the gear 30, it meshes with the gear 30 to form an annular rotation of the semi-toothed ring 1 31 and the semi-toothed ring 2 38. Through the annular rotation of the semi-toothed ring 1 31 and the semi-toothed ring 2 38, the annular rotation of the welding head 32 is driven to perform annular welding on the pipeline.

[0031] Principle of the present invention: When in use, two pipes are placed on two support seats 2 respectively through an external conveying and lifting mechanism, and the hydraulic telescopic rod 12 is started, driving the connecting disc 13 to move, driving the rotating plate 14, the rectangular frame 21, and the baffle 22 to move, and one end enters the interior of the pipe. The baffle 22 is blocked by the L-shaped support seat 8 and stops moving. The rotating plate 14 continues to move and rotate, driving the arc-shaped pressing plate mechanism 15 to move, and the arc-shaped pressing plate 18 squeezes the inner wall of the pipe to fix the pipe; When pipes of different diameters are placed on the support seat 2, the upper arc-shaped pressing plate 18 contacts the inner wall of the pipe, and the hydraulic telescopic rod 12 continues to start to extend. The pipe applies downward pressure to the upper arc-shaped pressing plate 18, driving the connecting disc 13, the hydraulic telescopic rod 12, and the L-shaped support seat 8 to move downward, so that the lower arc-shaped pressing plate 18 is blocked by the lower end of the inner wall of the pipe, thereby fixing the pipe; After fixing, the driving motor 2 36 is started, and the rotating rod 35 is driven to rotate through the pulley mechanism 37, and the extension plate 34 and the upper support seat 25 are driven to rotate, and the upper support seat 25 is rotated to dock with the lower support seat 24, and the semi-toothed ring 2 38 is docked with the semi-toothed ring 1 31, and the electric telescopic rod 40 is started, driving the pressing plate 41 to move upward, and the pressing plate 41 no longer squeezes the semi-toothed ring 2 38; The driving motor 1 28 is started, driving the rotating shaft 29 to rotate, driving the gear 30 to rotate, driving the semi-toothed ring 1 31 to rotate, thereby driving the semi-toothed ring 2 38 to rotate, and when the semi-toothed ring 2 38 rotates to the gear 30, it meshes with the gear 30 to form an annular rotation of the semi-toothed ring 1 31 and the semi-toothed ring 2 38, and the annular rotation of the semi-toothed ring 1 31 and the semi-toothed ring 2 38 drives the annular rotation of the welding head 32 to perform annular welding on the pipeline.

[0032] Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the authorization requirements.

Claims

1. An automated welding device, comprising a platform plate (1) and a support base (2), characterized in that: The support seats (2) are provided with two, which are symmetrically arranged on both sides of the platform plate (1); The mounting plate (1) is provided with a multi-diameter fixing mechanism (3) and a surrounding welding mechanism (4); the multi-diameter fixing mechanism (3) is arranged on one side of the support seat (2) and is used to adaptively fix pipes of different diameters; the surrounding welding mechanism (4) is arranged between the two support seats (2) and is used to perform annular welding on the pipe; The multi-path fixing mechanism (3) comprises an adaptive displacement support mechanism (5) and an extrusion fixing mechanism (6); the adaptive displacement support mechanism (5) is arranged on a stand plate (1); and the extrusion fixing mechanism (6) is arranged on the adaptive displacement support mechanism (5) and is used to perform extrusion fixing on the pipeline.

2. An automated welding device according to claim 1, characterized in that: The adaptive displacement support mechanism (5) comprises a vertical support base plate (7), an L-shaped support seat (8), a telescopic rod (9), and a spring (10); the vertical support base plate (7) is fixedly connected to the mounting plate (1); the L-shaped support seat (8) is slidably arranged on the vertical support base plate (7) via a sliding mechanism (11); two ends of the telescopic rod (9) are respectively connected to the lower end surface of the L-shaped support seat (8) and the upper end surface of the mounting plate (1); and the spring (10) is sleeved on the surface of the telescopic rod (9).

3. An automated welding device according to claim 2, characterized in that: The extrusion type fixing mechanism (6) comprises a hydraulic telescopic rod (12), a connecting disc (13), a rotating plate (14), an arc-shaped pressing plate mechanism (15), and an adjusting frame mechanism (16). The hydraulic telescopic rod (12) is fixedly connected to the L-shaped support seat (8). The connecting disc (13) is fixedly connected to the protruding end of the hydraulic telescopic rod (12). The rotating plates (14) are arranged in a surrounding array with the center position of the connecting disc (13) as a reference. Each of the rotating plates (14) is hinged to the connecting disc (13) via a hinge (17). The arc-shaped pressing plate mechanism (15) is arranged at the end of the rotating plate (14) away from the connecting disc (13). The adjusting frame mechanism (16) passes through the L-shaped support seat (8) and is movably connected to the rotating plate (14).

4. An automated welding device according to claim 3, characterized in that: The arc-shaped pressure plate mechanism (15) comprises an arc-shaped pressure plate (18) and a tension spring (19). The arc-shaped pressure plate (18) is rotatably connected to the end of the rotating plate (14) away from the connecting disc (13) via a hinge seat (20). The two ends of the tension spring (19) are respectively connected to the arc-shaped pressure plate (18) and the rotating plate (14).

5. An automated welding device according to claim 4, characterized in that: The adjustment frame mechanism (16) comprises a rectangular frame (21) and a baffle (22); the rectangular frame (21) has a circular cross section; a movable groove (23) is provided on the rotating plate (14); the rectangular frame (21) passes through the movable groove (23); the rectangular frame (21) passes through the L-shaped support seat (8); the baffle (22) is fixedly connected to the rectangular frame (21); and the baffle (22) is provided on a side of the L-shaped support seat (8) away from the support seat (2).

6. An automated welding device according to claim 5, characterized in that: The surrounding welding mechanism (4) comprises a lower support seat (24), an upper support seat (25), and a welding mechanism (26); the lower support seat (24) is fixedly connected to the frame plate (1); the upper support seat (25) is connected to the upper end of the lower support seat (24) via a rotating mechanism (27); and the welding mechanism (26) is arranged on the lower support seat (24) and surrounds the upper support seat (25) and the lower support seat (24).

7. An automated welding device according to claim 6, characterized in that: The welding mechanism (26) comprises a driving motor (28), a rotating shaft (29), a gear (30), a semi-toothed ring (31), and a welding head (32). The driving motor (28) is fixedly connected to the lower support seat (24). The lower support seat (24) is provided with a storage bin. The rotating shaft (29) is fixedly connected to the output end of the driving motor (28) and extends into the storage bin. The gear (30) is disposed in the storage bin and is coaxially fixedly connected to the rotating shaft (29). The lower support seat (24) is provided with a semi-annular slide groove and communicates with the storage bin. The semi-toothed ring (31) is annularly slidably disposed in the semi-annular slide groove and meshes with the gear (30). The welding head (32) is connected to the semi-toothed ring (31).

8. An automated welding device according to claim 7, characterized in that: The rotating mechanism (27) comprises an L-shaped extension plate (33), an extension plate (34), a rotating rod (35), a second drive motor (36), and a pulley mechanism (37); the L-shaped extension plate (33) is fixedly connected to the lower support seat (24); the extension plate (34) is fixedly connected to the upper support seat (25); a U-shaped groove is provided on the L-shaped extension plate (33); an end of the extension plate (34) away from the upper support seat (25) is connected to the U-shaped groove via a rotating rod (35); the rotating rod (35) is fixedly connected to the extension plate (34) and movably passes through the L-shaped extension plate (33); the second drive motor (36) is fixedly connected to the lower support seat (24) via a support seat; and an output end of the second drive motor (36) is connected to the rotating rod (35) via a pulley mechanism (37); The pulley mechanism (37) comprises a pulley and a connecting belt. Two pulleys are provided and are coaxially fixedly connected to the rotating rod (35) and the output end of the second driving motor (36). The connecting belt is connected to the two pulleys.

9. An automated welding device according to claim 8, characterized in that: The upper support seat (25) is provided with a second semi-annular slide groove, in which a second semi-toothed ring (38) is provided for annularly sliding with the upper support seat (25), the second semi-toothed ring (38) is butt-jointed with the first semi-toothed ring (31), and the upper support seat (25) is provided with a fixing mechanism for fixing the second semi-toothed ring (38); The fixing mechanism comprises a U-shaped frame (39), an electric telescopic rod (40), and a pressing plate (41); the U-shaped frame (39) is fixedly connected to the upper support seat (25); the electric telescopic rod (40) is fixedly connected to the U-shaped frame (39); the pressing plate (41) is fixedly connected to the protruding end of the electric telescopic rod (40); the upper support seat (25) is provided with a pressing plate groove (42) which is in communication with the second semi-annular slide groove; the pressing plate groove (42) is used for the pressing plate (41) to pass through and press the second semi-toothed ring (38) for fixing.

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