Corrugated pipe electric arc machining device with inert gas protection function

Abstract

The invention discloses a corrugated pipe electric arc machining device with an inert gas protection function, and relates to the technical field of electric arc machining, the electric arc machining device is mainly used for welding a vacuum corrugated pipe, the electric arc machining device comprises a workbench, a rotating module, a lifting module, a welding module, a pressing module and a clamping module, the workbench is placed on a plane, and the rotating module is arranged on the workbench; the workbench is fixedly connected with the rotating module, the rotating module is fixedly connected with the clamping module, the workbench is fixedly connected with the lifting module, the lifting module is connected with the welding module, the lifting module is connected with the pressing module, the welding module and the pressing module ascend and descend synchronously, the clamping module is fixedly connected with the workbench, and the clamping module is attached to the inner wall of the vacuum corrugated pipe. The vacuum corrugated pipe is positioned and clamped through the clamping module, the situation that the machining effect is affected by shaking during machining is prevented, inert gas is introduced into the welding module, and the gas spraying pipe is arranged on the pressing module, so that inner and outer double-face protection is conducted on the vacuum corrugated pipe during machining.

Description

Technical Field

[0001] The invention relates to the technical field of arc processing, in particular to a bellows arc processing device with an inert gas protection function. Background Art

[0002] The vacuum bellows is a metal component with the characteristics of pressure resistance, temperature resistance, corrosion resistance, and high elasticity. It is composed of a thin hollow diaphragm formed by multi-layer stamping through precision welding. It can withstand deformation such as stretching, compression, and bending to a certain extent without permanent damage, thus providing basic elastic protection for the bellows. When assembling the vacuum bellows, multiple bellows and flanges need to be welded together.

[0003] In the prior art, when the bellows is welded, only the welding surface is protected by inert gas, and the other inner side is not protected by inert gas, which makes it easier for oxidation to occur during welding, thus affecting the quality of the bellows. Summary of the invention

[0004] The object of the present invention is to provide a bellows arc machining device with an inert gas protection function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the arc processing device mainly performs assembly welding on the vacuum bellows, and the arc processing device comprises a workbench, a rotating module, a lifting module, a welding module, a pressing module and a clamping module. The workbench is placed on a plane, the workbench is fixedly connected to the rotating module, the rotating module is fixedly connected to the clamping module, the workbench is fixedly connected to the lifting module, the lifting module is connected to the welding module, the lifting module is connected to the pressing module, the welding module and the pressing module are lifted and lowered synchronously, the clamping module is fixedly connected to the workbench, and the clamping module is in contact with the inner wall of the vacuum bellows.

[0006] The workbench is used to fix various components. During processing, the vacuum bellows is placed on the rotating module. The lifting module controls the lifting and lowering of the welding module and the pressing module. The pressing module presses the vacuum bellows, and then the clamping module clamps the vacuum bellows. The rotating module controls the vacuum bellows to rotate on the clamping module. The welding module welds the vacuum bellows. The welding module and the pressing module lift and lower synchronously. When continuous welding is performed on different positions of the vacuum bellows, the welding module and the pressing module maintain the same height.

[0007] Furthermore, the rotating module includes a rotating motor, a driving gear, a driven gear, a fixed base and a transmission box, the rotating motor is fixedly connected to the workbench, the output end of the rotating motor passes through the workbench and is fixedly connected to the driving gear, the driven gear is provided with a countersunk groove, the countersunk groove of the driven gear is provided with a plurality of countersunk holes, the workbench is provided with a mounting hole, the workbench is fixedly connected to the fixed base through the mounting hole, the fixed base is rotationally connected to the driven gear, the fixed base is fixedly connected to the clamping module, and the driven gear meshes and rotates with the driving gear; the countersunk groove of the driven gear is used to place a vacuum bellows, the bellows and flange of the vacuum bellows can be spot welded and fixed before welding, the countersunk holes on the countersunk groove of the driven gear are used to place a fixing rod to fix the flange, so that the vacuum bellows follows the driven gear to rotate, the rotating motor controls the driving gear to drive the driven gear to rotate, the fixed base is used to connect various parts, and the transmission box is used to protect internal gears.

[0008] Furthermore, the lifting module includes a driving motor, a guide column and a screw rod, the workbench is fixedly connected to the driving motor, the output end of the driving motor is fixedly connected to the screw rod, one end of the screw rod passes through the workbench, the welding module and the pressing module in sequence, the screw rod is rotatably connected to the workbench, the guide column passes through the workbench, the welding module and the pressing module in sequence, and the guide column is fixedly connected to the workbench; the driving motor drives the screw rod to rotate, controls the lifting and lowering of the welding module and the pressing module, and the guide column is used to limit the rotation of the welding module and the pressing module.

[0009] Furthermore, the welding module includes a fixed block, a flipping module, a rotating block and a welding gun, the fixed block is provided with a threaded hole, the fixed block is threadedly connected to the screw rod through the threaded hole, the fixed block is provided with a guide hole, the fixed block is slidingly connected to the guide column through the guide hole, a mounting bracket is provided at one end of the fixed block away from the threaded hole, the fixed block is rotatably connected to the rotating block through the mounting bracket, a welding gun is arranged on the rotating block, the flipping module is fixedly connected to the mounting bracket of the fixed block, and the flipping module is connected to the rotating block; the fixed block is used to fix various parts, the flipping module controls the rotation of the rotating block, and the rotating block drives the welding gun to flip.

[0010] Furthermore, the pressing module comprises a connecting block, an air jet pipe, a connecting column, a pressing spring and a pressing block, the connecting block is provided with a thread hole, the connecting block is threadedly connected to the screw rod through the thread hole, the connecting block is provided with a limiting hole, the connecting block is slidably connected to the guide column through the limiting hole, an air jet pipe is arranged at one end of the connecting block away from the thread hole, the connecting column passes through the connecting block and the pressing spring in sequence, the connecting column is fixedly connected to the pressing block, the top of the pressing spring is fitted with the connecting block, and the bottom of the pressing spring is fitted with the pressing block; the connecting block is used to fix various parts, and both sides of the vacuum bellows will be easily oxidized due to high temperature during welding. The welding gun can usually spray inert gas, but cannot protect the other side of the vacuum bellows. The air jet pipe can spray inert gas to protect the other side of the welding part, the connecting block and the fixed block can be raised and lowered synchronously, the air jet pipe can be consistent with the height of the welding point, the height of the pressing block is lower than the welding point, and before welding, the connecting column and the pressing spring control the pressing block to press the vacuum bellows tightly.

[0011] Furthermore, the clamping module includes a clamping cylinder and a clamping assembly, the clamping cylinder is fixedly connected to the workbench, the fixed base is provided with a through hole, the telescopic end of the clamping cylinder passes through the through hole of the fixed base and is fixedly connected to the clamping assembly, the fixed base is provided with a fixed boss, and the fixed base is fixedly connected to the clamping assembly through the pipe boss; the clamping cylinder clamps the vacuum bellows by telescopically controlling the clamping assembly.

[0012] Furthermore, the flipping module includes a flipping motor, a reduction unit, a power gear, a passive gear and a gear box. The flipping motor is fixedly connected to the reduction unit, which is fixedly connected to the mounting bracket of the fixed block. The power gear is provided with a cam shaft, which passes through the mounting bracket of the fixed block and is fixedly connected to the reduction unit. The power gear meshes and rotates with the passive gear, which is fixedly connected to the rotating block. The gear box is fixedly connected to the fixed block, and the gear box is provided with a avoidance hole. The gear box is rotationally connected to the rotating block through the avoidance hole. The reduction unit is a worm gear reducer, which can achieve self-locking to maintain the rotation angle of the rotating block. The flipping motor controls the rotation of the power gear through the reduction unit, and the power gear controls the rotation of the rotating block through the passive gear. The gear box is used to protect internal parts.

[0013] Furthermore, the clamping assembly includes a mounting column, a connecting rod, a slider, a roller and a limit block, the mounting column is fixedly connected to the clamping cylinder, the mounting column is provided with a plurality of side surfaces, the side surfaces of the mounting column are provided with a plurality of connecting brackets, the mounting column is hinged to the connecting rod through the connecting bracket, the slider is provided with a plurality of mounting brackets on a side close to the mounting column, the connecting rod is hinged to the mounting bracket of the slider at one end away from the mounting column, the slider is provided with a roller, the roller is rotatably connected to the slider, the bottom of the slider is provided with a guide boss, the limit block is provided with a plurality of guide slots, and the limit The guide slot of the block corresponds to the side of the mounting column, the guide boss of the slider is slidably connected to the guide slot of the limit block, the limit block is provided with a circular hole, and the limit block is fixedly connected to the fixed boss of the fixed base through the circular hole; when the mounting column is lifted or lowered, the slider is driven to move through the connecting rod, and the limit block prevents the slider from moving up and down, so that the limit block can only slide on the guide slot of the limit block, and when the roller clamps the vacuum bellows, the vacuum bellows is convenient for rotating, and the vacuum bellows follows the driven gear to facilitate the installation of the jet pipe, thereby preventing the placement of the jet pipe from being affected when the connecting rod and the slider rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The jet pipe sprays inert gas to protect the other side of the welding. The jet pipe is at the same height as the welding point of the welding gun, and there is no need to adjust the position during continuous welding;

[0016] 2. The clamping assembly is fixed when clamped, which can prevent the clamping assembly from affecting the continuous processing of the vacuum bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the working structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point A;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at B;

[0021] Figure 5 It is a schematic diagram of the welding module structure of the present invention.

[0022] In the figure: 1. workbench; 2. rotating module; 21. rotating motor; 22. driving gear; 23. driven gear; 24. fixed base; 25. transmission box; 3. lifting module; 31. driving motor; 32. guide column; 33. screw rod; 4. welding module; 41. fixed block; 42. flip module; 421. flip motor; 422. reduction unit; 423. power gear; 424. passive gear; 425. gear box; 43. rotating block; 44. welding gun; 5. pressing module; 51. connecting block; 52. jet pipe; 53. connecting column; 54. pressing spring; 55. pressing block; 6. clamping module; 61. clamping cylinder; 62. clamping assembly; 621. mounting column; 622. connecting rod; 623. slider; 624. roller; 625. limit block; 7. vacuum bellows. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example: Figure 1-Figure 5 As shown, the present invention provides a technical solution, the arc processing device is mainly used to assemble and weld the vacuum bellows 7, the arc processing device includes a workbench 1, a rotating module 2, a lifting module 3, a welding module 4, a pressing module 5 and a clamping module 6, the workbench 1 is placed on a plane, the workbench 1 is fixedly connected to the rotating module 2, the rotating module 2 is fixedly connected to the clamping module 6, the workbench 1 is fixedly connected to the lifting module 3, the lifting module 3 is connected to the welding module 4, the lifting module 3 is connected to the pressing module 5, the welding module 4 and the pressing module 5 are lifted and lowered synchronously, the clamping module 6 is fixedly connected to the workbench 1, and the clamping module 6 is in contact with the inner wall of the vacuum bellows 7.

[0025] The workbench 1 is used to fix various components. During processing, the vacuum bellows 7 is placed on the rotating module 2. The lifting module 3 controls the lifting and lowering of the welding module 4 and the pressing module 5. The pressing module 5 presses the vacuum bellows 7, and then the clamping module 6 clamps the vacuum bellows 7. The rotating module 2 controls the vacuum bellows 7 to rotate on the clamping module 6. The welding module 4 welds the vacuum bellows 7. The welding module 4 and the pressing module 5 are lifted and lowered synchronously. When continuous welding is performed on different positions of the vacuum bellows 7, the welding module 4 and the pressing module 5 maintain the same height.

[0026] The rotating module 2 includes a rotating motor 21, a driving gear 22, a driven gear 23, a fixed base 24 and a transmission box 25. The rotating motor 21 is fixedly connected to the workbench 1, and the output end of the rotating motor 21 passes through the workbench 1 and is fixedly connected to the driving gear 22. A countersunk groove is provided on the driven gear 23, and a plurality of countersunk holes are provided on the countersunk groove of the driven gear 23. The workbench 1 is provided with a mounting hole, and the workbench 1 is fixedly connected to the fixed base 24 through the mounting hole. The fixed base 24 is rotatably connected to the driven gear 23, and the fixed base 24 is fixedly connected to the clamping module 6. The driven gear 23 meshes and rotates with the driving gear 22.

[0027] The sink groove of the driven gear 23 is used to place the vacuum bellows 7. The bellows and flange of the vacuum bellows 7 can be spot welded and fixed before welding. The countersunk hole on the sink groove of the driven gear 23 is used to place a fixing rod to fix the flange, so that the vacuum bellows 7 rotates with the driven gear 23. The rotating motor 21 controls the driving gear 22 to drive the driven gear 23 to rotate. The fixed base 24 is used to connect various parts, and the transmission box 25 is used to protect the internal gears.

[0028] The lifting module 3 includes a driving motor 31, a guide column 32 and a screw rod 33. The workbench 1 is fixedly connected to the driving motor 31. The output end of the driving motor 31 is fixedly connected to the screw rod 33. One end of the screw rod 33 passes through the workbench 1, the welding module 4 and the pressing module 5 in sequence. The screw rod 33 is rotatably connected to the workbench 1. The guide column 32 passes through the workbench 1, the welding module 4 and the pressing module 5 in sequence. The guide column 32 is fixedly connected to the workbench 1.

[0029] The driving motor 31 drives the screw rod 33 to rotate, and controls the lifting and lowering of the welding module 4 and the pressing module 5 . The guide column 32 is used to limit the rotation of the welding module 4 and the pressing module 5 .

[0030] The welding module 4 includes a fixed block 41, a flip module 42, a rotating block 43 and a welding gun 44. The fixed block 41 is provided with a threaded hole, and the fixed block 41 is threadedly connected to the screw rod 33 through the threaded hole. The fixed block 41 is provided with a guide hole, and the fixed block 41 is slidingly connected to the guide column 32 through the guide hole. A mounting bracket is provided at one end of the fixed block 41 away from the threaded hole, and the fixed block 41 is rotatably connected to the rotating block 43 through the mounting bracket. The welding gun 44 is arranged on the rotating block 43, the flip module 42 is fixedly connected to the mounting bracket of the fixed block 41, and the flip module 42 is connected to the rotating block 43.

[0031] The fixing block 41 is used to fix various parts, and the turning module 42 controls the rotation of the rotating block 43, and the rotating block 43 drives the welding gun 44 to turn over.

[0032] The pressing module 5 includes a connecting block 51, an air jet 52, a connecting column 53, a pressing spring 54 and a pressing block 55. The connecting block 51 is provided with a thread hole, through which the connecting block 51 is threadedly connected to the screw rod 33. The connecting block 51 is provided with a limiting hole, through which the connecting block 51 is slidably connected to the guide column 32. The air jet 52 is arranged at one end of the connecting block 51 away from the thread hole. The connecting column 53 passes through the connecting block 51 and the pressing spring 54 in sequence. The connecting column 53 is fixedly connected to the pressing block 55. The top of the pressing spring 54 is in contact with the connecting block 51, and the bottom of the pressing spring 54 is in contact with the pressing block 55.

[0033] The connecting block 51 is used to fix various parts. When the vacuum bellows 7 is welded, both sides will be affected by high temperature and easily oxidized. The welding gun 44 can usually spray inert gas, but it cannot protect the other side of the vacuum bellows 7. The jet pipe 52 can spray inert gas to protect the other side of the welding part. The connecting block 51 and the fixing block 41 can be raised and lowered synchronously. The jet pipe 52 can be consistent with the height of the welding point. The height of the pressing block 55 is lower than the welding point. Before welding, the connecting column 53 and the downward pressure spring 54 control the pressing block 55 to press the vacuum bellows 7.

[0034] The clamping module 6 includes a clamping cylinder 61 and a clamping assembly 62. The clamping cylinder 61 is fixedly connected to the workbench 1. The fixed base 24 is provided with a through hole. The telescopic end of the clamping cylinder 61 passes through the through hole of the fixed base 24 and is fixedly connected to the clamping assembly 62. The fixed base 24 is provided with a fixed boss. The fixed base 24 is fixedly connected to the clamping assembly 62 through the pipe boss.

[0035] The clamping cylinder 61 clamps the vacuum bellows 7 by controlling the clamping assembly 62 through telescoping.

[0036] The flip module 42 includes a flip motor 421, a reduction unit 422, a power gear 423, a passive gear 424 and a gear box 425. The flip motor 421 is fixedly connected to the reduction unit 422, and the reduction unit 422 is fixedly connected to the mounting bracket of the fixed block 41. The power gear 423 is provided with a cam shaft, and the cam shaft of the power gear 423 passes through the mounting bracket of the fixed block 41 and is fixedly connected to the reduction unit 422. The power gear 423 meshes and rotates with the passive gear 424, and the passive gear 424 is fixedly connected to the rotating block 43. The gear box 425 is fixedly connected to the fixed block 41, and the gear box 425 is provided with an avoidance hole, and the gear box 425 is rotationally connected to the rotating block 43 through the avoidance hole.

[0037] The reduction unit 422 is a worm gear reducer, which can achieve self-locking to maintain the rotation angle of the rotating block 43. The flip motor 421 controls the rotation of the power gear 423 through the reduction unit 422. The power gear 423 controls the rotation of the rotating block 43 through the passive gear 424. The gear box 425 is used to protect internal parts.

[0038] The clamping assembly 62 includes a mounting column 621, a connecting rod 622, a slider 623, a roller 624 and a limit block 625. The mounting column 621 is fixedly connected to the clamping cylinder 61. The mounting column 621 is provided with a plurality of side surfaces. The side surfaces of the mounting column 621 are provided with a plurality of connecting brackets. The mounting column 621 is hinged to the connecting rod 622 through the connecting brackets. The slider 623 is provided with a plurality of mounting brackets on a side close to the mounting column 621. The connecting rod 622 is provided with a mounting bracket on one end away from the mounting column 621 and the slider 623. The bracket is hinged, and a roller 624 is provided on the slider 623, and the roller 624 is rotatably connected to the slider 623. A guide boss is provided at the bottom of the slider 623, and the limit block 625 is provided with a plurality of guide grooves, and the guide grooves of the limit block 625 correspond to the sides of the mounting column 621. The guide boss of the slider 623 is slidably connected to the guide grooves of the limit block 625, and the limit block 625 is provided with a circular hole, and the limit block 625 is fixedly connected to the fixed boss of the fixed base 24 through the circular hole.

[0039] When the mounting column 621 is raised or lowered, the slider 623 is driven to move through the connecting rod 622, and the limit block 625 prevents the slider 623 from moving up and down, so that the limit block 625 can only slide on the guide groove of the limit block 625. When the roller 624 clamps the vacuum bellows 7, it is convenient for the vacuum bellows 7 to rotate. The vacuum bellows 7 follows the driven gear 23 to facilitate the installation of the jet pipe 52, and prevent the rotation of the connecting rod 622 and the slider 623 from affecting the placement of the jet pipe 52. The interval center of the slider 623 faces the welding gun 44, and prevents the roller 624 from clamping the vacuum bellows 7 and affecting continuous welding.

[0040] The working principle of the present invention is as follows: during processing, the vacuum bellows 7 is placed on the rotating module 2, the lifting module 3 controls the lifting of the welding module 4 and the pressing module 5, the pressing block 55 presses the vacuum bellows 7, and then the clamping cylinder 61 controls the roller 624 to clamp the vacuum bellows 7, the rotating module 2 controls the vacuum bellows 7 to rotate on the roller 624, the flipping module 42 adjusts the angle of the welding gun 44 to weld the vacuum bellows 7, and the jet pipe 52 can spray inert gas to protect the other side of the welding part.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A bellows arc machining device with inert gas protection function, characterized in that: The arc processing device mainly performs assembly welding on a vacuum bellows (7), and the arc processing device comprises a workbench (1), a rotating module (2), a lifting module (3), a welding module (4), a pressing module (5) and a clamping module (6). The workbench (1) is placed on a plane, the workbench (1) is fixedly connected to the rotating module (2), the rotating module (2) is fixedly connected to the clamping module (6), the workbench (1) is fixedly connected to the lifting module (3), the lifting module (3) is connected to the welding module (4), the lifting module (3) is connected to the pressing module (5), the welding module (4) and the pressing module (5) are lifted and lowered synchronously, the clamping module (6) is fixedly connected to the workbench (1), and the clamping module (6) is in contact with the inner wall of the vacuum bellows (7).

2. The bellows arc machining device with inert gas protection function according to claim 1, characterized in that: The rotating module (2) comprises a rotating motor (21), a driving gear (22), a driven gear (23), a fixed base (24) and a transmission box (25); the rotating motor (21) is fixedly connected to the workbench (1); the output end of the rotating motor (21) passes through the workbench (1) and is fixedly connected to the driving gear (22); a sink groove is provided on the driven gear (23); the sink groove of the driven gear (23) is provided with a plurality of sink holes; the workbench (1) is provided with a mounting hole; the workbench (1) is fixedly connected to the fixed base (24) through the mounting hole; the fixed base (24) is rotatably connected to the driven gear (23); the fixed base (24) is fixedly connected to the clamping module (6); the driven gear (23) is meshed and rotatably connected to the driving gear (22).

3. The bellows arc machining device with inert gas protection function according to claim 1, characterized in that: The lifting module (3) comprises a driving motor (31), a guide column (32) and a screw rod (33); the workbench (1) is fixedly connected to the driving motor (31); the output end of the driving motor (31) is fixedly connected to the screw rod (33); one end of the screw rod (33) passes through the workbench (1), the welding module (4) and the pressing module (5) in sequence; the screw rod (33) is rotatably connected to the workbench (1); the guide column (32) passes through the workbench (1), the welding module (4) and the pressing module (5) in sequence; and the guide column (32) is fixedly connected to the workbench (1).

4. The bellows arc machining device with inert gas protection function according to claim 3, characterized in that: The welding module (4) comprises a fixed block (41), a flip module (42), a rotating block (43) and a welding gun (44); a threaded hole is provided on the fixed block (41); the fixed block (41) is threadedly connected to the screw rod (33) through the threaded hole; a guide hole is provided on the fixed block (41); the fixed block (41) is slidably connected to the guide column (32) through the guide hole; a mounting bracket is provided at one end of the fixed block (41) away from the threaded hole; the fixed block (41) is rotatably connected to the rotating block (43) through the mounting bracket; a welding gun (44) is provided on the rotating block (43); the flip module (42) is fixedly connected to the mounting bracket of the fixed block (41); and the flip module (42) is connected to the rotating block (43).

5. The bellows arc machining device with inert gas protection function according to claim 3, characterized in that: The pressing module (5) comprises a connecting block (51), an air jet pipe (52), a connecting column (53), a pressing spring (54) and a pressing block (55); the connecting block (51) is provided with a thread hole, the connecting block (51) is threadedly connected to the screw rod (33) through the thread hole, the connecting block (51) is provided with a limiting hole, the connecting block (51) is slidably connected to the guide column (32) through the limiting hole, an air jet pipe (52) is arranged at one end of the connecting block (51) away from the thread hole, the connecting column (53) passes through the connecting block (51) and the pressing spring (54) in sequence, the connecting column (53) is fixedly connected to the pressing block (55), the top end of the pressing spring (54) is in contact with the connecting block (51), and the bottom end of the pressing spring (54) is in contact with the pressing block (55).

6. The bellows arc machining device with inert gas protection function according to claim 2, characterized in that: The clamping module (6) comprises a clamping cylinder (61) and a clamping assembly (62); the clamping cylinder (61) is fixedly connected to the workbench (1); the fixed base (24) is provided with a through hole; the telescopic end of the clamping cylinder (61) passes through the through hole of the fixed base (24) and is fixedly connected to the clamping assembly (62); the fixed base (24) is provided with a fixed boss; the fixed base (24) is fixedly connected to the clamping assembly (62) via the pipe boss.

7. The bellows arc machining device with inert gas protection function according to claim 4, characterized in that: The flip module (42) comprises a flip motor (421), a reduction unit (422), a power gear (423), a passive gear (424) and a gear box (425); the flip motor (421) is fixedly connected to the reduction unit (422); the reduction unit (422) is fixedly connected to a mounting bracket of a fixed block (41); the power gear (423) is provided with a convex shaft; the convex shaft of the power gear (423) passes through the mounting bracket of the fixed block (41) and is fixedly connected to the reduction unit (422); the power gear (423) is meshed and rotated with the passive gear (424); the passive gear (424) is fixedly connected to a rotating block (43); the gear box (425) is fixedly connected to the fixed block (41); the gear box (425) is provided with a position avoidance hole; the gear box (425) is rotationally connected to the rotating block (43) through the position avoidance hole.

8. The bellows arc machining device with inert gas protection function according to claim 6, characterized in that: The clamping assembly (62) comprises a mounting column (621), a connecting rod (622), a slider (623), a roller (624) and a limit block (625); the mounting column (621) is fixedly connected to the clamping cylinder (61); the mounting column (621) is provided with a plurality of side surfaces; the side surfaces of the mounting column (621) are provided with a plurality of connecting brackets; the mounting column (621) is hinged to the connecting rod (622) via the connecting brackets; a plurality of mounting brackets are provided on a side of the slider (623) close to the mounting column (621); an end of the connecting rod (622) away from the mounting column (621) is connected to the slider (623) ) is hingedly connected to the mounting bracket of the mounting column (621), the slider (623) is provided with a roller (624), the roller (624) is rotatably connected to the slider (623), the bottom of the slider (623) is provided with a guide boss, the limit block (625) is provided with a plurality of guide grooves, the guide grooves of the limit block (625) correspond to the side surfaces of the mounting column (621), the guide boss of the slider (623) is slidably connected to the guide grooves of the limit block (625), the limit block (625) is provided with a circular hole, and the limit block (625) is fixedly connected to the fixed boss of the fixed base (24) through the circular hole.

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