Automatic corrugated pipe welding equipment

Abstract

The invention discloses corrugated pipe automatic welding equipment, and belongs to the technical field of corrugated pipe welding equipment.The corrugated pipe automatic welding equipment comprises a moving cylinder and a walking mechanism used for pushing the moving cylinder to move in a corrugated pipe, a cylindrical support is rotatably mounted in the moving cylinder, and a mounting seat is fixed in the cylindrical support; a connecting plate is slidably mounted on the mounting base in the length direction of the cylindrical support, a moving plate is fixed to the bottom face of the connecting plate, a rotating plate is rotatably mounted at the end, away from the connecting plate, of the moving plate, a first guide rail is mounted on the side face, away from the moving plate, of the rotating plate, and a welding gun is slidably mounted on the first guide rail in the length direction of the rotating plate. A first air cylinder is hinged to the top face of the movable plate, the end of a piston rod of the first air cylinder is hinged to the side face of the rotating plate, and a second air cylinder is fixed to the side face, away from the first air cylinder, of the rotating plate. According to the automatic welding equipment for the corrugated pipe, the efficient and stable automatic welding process can be achieved, it is ensured that the welding quality is stable, and the automation degree is high.

Description

Technical Field

[0001] The invention belongs to the technical field of bellows welding equipment, and in particular relates to automatic bellows welding equipment. Background Art

[0002] As an important piping component, bellows are widely used in the fields of petroleum, chemical industry, electric power, metallurgy, construction, etc., especially in environments that need to withstand large pressures, temperature changes and frequent vibrations. Bellows have good flexibility, corrosion resistance and sealing properties, so they play an important role in various piping systems. With the continuous advancement of industrialization, the demand for bellows is gradually increasing, especially the demand for high-quality and high-precision bellows in the market is particularly prominent.

[0003] In the production process of corrugated pipes, welding technology is one of the key processes. Traditional bellows welding usually relies on manual operation or semi-automatic equipment. During manual welding, the operation process is cumbersome and welding defects are prone to occur, such as uneven welds, insufficient strength at welded joints, unstable heat-affected zones in welding areas, etc., which affect the welding quality and efficiency of the bellows. Summary of the invention

[0004] The purpose of the present invention is to provide a bellows automatic welding device with simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: The cam is provided with a plurality of guide rails, each of which ...

[0006] As a further optimization scheme of the present invention, the driving assembly includes a connecting block fixed to the side of the connecting plate, a horizontally arranged lead screw is rotatably installed on the mounting seat, the connecting block is sleeved on the outer periphery of the lead screw, the connecting block cooperates with the lead screw thread transmission, a motor 1 is fixed to the mounting seat, the output end of the motor 1 is coaxially fixed with the lead screw, a horizontally arranged guide rail 2 is fixed on the mounting seat, and the connecting plate slides along the length direction of the lead screw through the guide rail 2.

[0007] As a further optimization scheme of the present invention, the rotating assembly includes a gear ring fixed to the inner circumference of the moving cylinder, the inner circumference of the cylindrical bracket is fixed with motor 2, the output end of motor 2 is coaxially fixed with a gear, and the gear and the gear ring are meshed with each other.

[0008] As a further optimization scheme of the present invention, the walking mechanism includes two connecting sleeves, the outer periphery of the connecting sleeve is sleeved with an abutting sleeve, the two connecting sleeves are respectively a first inner sleeve and a second inner sleeve, the two abutting sleeves are respectively a first outer sleeve and a second outer sleeve, an annular plate 1 is fixed to the end face of the first outer sleeve, the end face of the first inner sleeve and the end face of the moving sleeve are both fixedly connected to the side face of the annular plate 1, an annular plate 2 is fixed to the end face of the second outer sleeve away from the first outer sleeve, the end face of the second inner sleeve is fixedly connected to the side face of the annular plate 2; the outer periphery of the abutting sleeve The surface can fit with the trough of the inner circumference of the corrugated pipe, the outer circumference of the first inner sleeve is sleeved and fixed with a ring 1, the outer circumference of the second inner sleeve is sleeved and fixed with a ring 2, two symmetrically arranged cylinders 3 are fixed between the ring 1 and the ring 2, the outer circumference of the connecting sleeve is provided with a plurality of blocks at equal intervals along its own circumference, the connecting sleeve is provided with a pushing component for pushing the block to slide along the radial direction of the connecting sleeve, the outer circumference of the abutting sleeve is provided with a through groove for penetrating the block, and the side of the block away from the connecting sleeve can fit with the trough and peak of the inner circumference of the corrugated pipe.

[0009] As a further optimization scheme of the present invention, the pushing assembly includes a pushing ring sleeved on the outer circumferential surface of the connecting sleeve, the pushing ring is rotatably connected to the connecting sleeve, a plurality of arc-shaped plates are fixed to the side of the pushing ring close to the blocking block, the arc-shaped plates correspond to the blocking block one by one, and a clearance groove for passing the arc-shaped plates is opened on the side of the blocking block, a stop block is fixed to one end of the arc-shaped plate, and the distance between the side of the arc-shaped plate away from the stop block and the connecting sleeve gradually decreases, a cylinder four is fixed to the inner circumferential surface of the abutting sleeve, a push rod is hinged at the end of the piston rod of the cylinder four, and the push rod is rotatably connected to the pushing ring.

[0010] As a further optimization scheme of the present invention, a guide rod is fixed to the side of the block close to the connecting sleeve, and a guide groove for passing the guide rod is opened on the outer circumference of the connecting sleeve. A spring is sleeved on the outer circumference of the guide rod, one end of the spring is fixedly connected to the outer circumference of the connecting sleeve, and the other end of the spring is fixedly connected to the side of the block.

[0011] As a further optimization scheme of the present invention, a fitting groove is provided on the outer circumferential surface of the first outer sleeve, a fitting ring is fixed to the end surface of the second outer sleeve close to the first outer sleeve, the fitting ring can be inserted into the fitting groove, the inner circumferential surface of the fitting ring is fitted with the outer circumferential surface of the fitting groove, a plurality of slots connected to the fitting groove are provided on the outer circumferential surface of the first outer sleeve, a plurality of inserts are fixed to the side of the fitting ring close to the first outer sleeve, the inserts can be inserted into the slots.

[0012] As a further optimization solution of the present invention, a ventilation sleeve is fixedly provided on the inner circumference of the annular plate 2, the end surface of the ventilation sleeve can abut against the end surface of the movable cylinder, and a fan is installed in the ventilation sleeve.

[0013] The beneficial effects of the present invention are as follows: the moving cylinder is driven by the walking mechanism to move to the welding position in the corrugated tube, the moving plate is pushed to move by the driving assembly, and the cooperation of cylinder one and cylinder two enables the welding gun to automatically adjust to the optimal welding angle and move radially along the corrugated tube for welding, thereby realizing an efficient and stable automated welding process, ensuring stable welding quality and a high degree of automation, and reducing manual operations and possible errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the movable cylinder of the present invention; Figure 3 It is a structural schematic diagram of the drive assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 5 It is a structural schematic diagram of the walking mechanism of the present invention; Figure 6 is a schematic structural diagram of the second outer sleeve of the present invention; Figure 7 It is a structural schematic diagram of the first outer sleeve of the present invention.

[0015] In the figure: 1, moving cylinder; 11, cylindrical bracket; 111, supporting ring; 112, supporting plate; 113, limiting block; 114, limiting groove; 12, mounting seat; 13, connecting plate; 14, limiting ring; 2, moving plate; 21, rotating plate; 22, guide rail 1; 23, welding gun; 24, cylinder 1; 25, cylinder 2; 3, driving assembly; 31, connecting block; 32, lead screw; 33, motor 1; 34, guide rail 2; 4, rotating assembly; 41, gear ring; 42, motor 2; 43, gear; 5, walking mechanism; 51, connecting sleeve; 511, first inner sleeve; 5111, ring 1; 51 2. Second inner sleeve; 5121. Circular ring 2; 52. Abutting sleeve; 521. First outer sleeve; 5211. Annular plate 1; 5212. Fitting groove; 5213. Slot; 522. Second outer sleeve; 5221. Annular plate 2; 5222. Fitting ring; 5223. Insert; 53. Cylinder 3; 54. Block; 541. Displacement groove; 55. Through groove; 56. Guide rod; 57. Guide groove; 58. Spring; 6. Pushing assembly; 61. Pushing ring; 62. Arc plate; 621. Stopper; 63. Cylinder 4; 64. Pushing rod; 7. Ventilation sleeve; 71. Fan; 72. Annular groove. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Reference Figure 1 , Figure 2 and Figure 3 The automatic bellows welding equipment includes a moving cylinder 1 and a walking mechanism 5 for pushing the moving cylinder 1 to move in the bellows. The moving cylinder 1 is coaxially arranged with the bellows. A cylindrical bracket 11 is rotatably installed in the moving cylinder 1, and a rotating assembly 4 for driving the cylindrical bracket 11 to rotate is arranged in the moving cylinder 1. A mounting seat 12 is fixed in the cylindrical bracket 11, and a connecting plate 13 is slidably installed on the mounting seat 12 along the length direction of the cylindrical bracket 11. A driving assembly 3 for driving the connecting plate 13 to move is arranged on the mounting seat 12.

[0018] Reference Figure 3The bottom surface of the connecting plate 13 is fixed with a moving plate 2, and a rotating plate 21 is rotatably mounted on one end of the moving plate 2 away from the connecting plate 13. A guide rail 1 22 is mounted on the side of the rotating plate 21 away from the moving plate 2, and a welding gun 23 is slidably mounted on the guide rail 1 22 along the length direction of the rotating plate 21. A cylinder 1 24 is hingedly connected to the top surface of the moving plate 2, and the end of the piston rod of the cylinder 1 24 is hingedly connected to the side of the rotating plate 21. A cylinder 25 is fixedly connected to the side of the rotating plate 21 away from the cylinder 1 24, and the end of the piston rod of the cylinder 25 is fixedly connected to the welding gun 23.

[0019] The traveling mechanism 5 is utilized to drive the moving cylinder 1 to move to the welding position in the corrugated tube, and then the driving assembly 3 is used to push the moving plate 2 to move to the outside of the moving cylinder 1, and the cylinder 1 24 is started, and the cylinder 1 24 pushes the rotating plate 21 to rotate upward, so that the welding gun 23 is in a vertical state, and then the cylinder 25 is started, and the cylinder 25 drives the welding gun 23 to move along the radial direction of the corrugated tube, so that the welding gun 23 can weld the corrugated tube, thereby realizing an efficient and stable automated welding process, ensuring stable welding quality and a high degree of automation, and reducing manual operations and possible errors.

[0020] Reference Figure 3 The driving assembly 3 includes a connecting block 31 fixed to the side of the connecting plate 13, and a horizontally arranged lead screw 32 is rotatably mounted on the mounting seat 12. The connecting block 31 is sleeved on the outer periphery of the lead screw 32, and the connecting block 31 and the lead screw 32 are threadedly matched. A motor 1 33 is fixed to the mounting seat 12, and the output end of the motor 1 33 is coaxially fixed with the lead screw 32. A horizontally arranged guide rail 2 34 is fixed to the mounting seat 12, and the connecting plate 13 slides along the length direction of the lead screw 32 through the guide rail 2 34.

[0021] Start the motor 33, the motor 33 drives the lead screw 32 to rotate, and the lead screw 32 drives the movable plate 2 to move along the length direction of the movable cylinder 1 through the connecting block 31 and the connecting plate 13, so that the movable plate 2 can move smoothly along the length direction of the movable cylinder 1, and push the welding gun 23 to move to the outside of the movable cylinder 1, so as to facilitate the deployment of the welding gun 23 and facilitate the welding operation.

[0022] Reference Figure 2 , Figure 3 and Figure 4 The cylindrical bracket 11 includes two supporting rings 111, and a plurality of supporting plates 112 are fixed between the two supporting rings 111. A limiting ring 14 is fixed to the inner circumference of the moving cylinder 1, and a plurality of limiting blocks 113 are fixed to the outer circumference of the supporting ring 111. The side of the limiting block 113 away from the supporting ring 111 is provided with a limiting groove 114 for passing the limiting ring 14. The rotating assembly 4 includes a gear ring 41 fixed to the inner circumference of the moving cylinder 1, and a motor 2 42 is fixed to the inner circumference of the cylindrical bracket 11. A gear 43 is coaxially fixed to the output end of the motor 2 42, and the gear 43 and the gear ring 41 are meshed with each other.

[0023] Start the second motor 42, which drives the gear 43 to rotate. The gear 43 meshes with the gear ring 41, thereby driving the cylindrical bracket 11 to rotate stably and accurately, and driving the welding gun 23 to rotate, so as to achieve comprehensive welding of the bellows by the welding gun 23, improve the flexibility during the welding process, and ensure the accuracy of welding.

[0024] Reference Figure 5 The walking mechanism 5 includes two connecting sleeves 51, and the outer periphery of the connecting sleeve 51 is sleeved with abutting sleeves 52. The two connecting sleeves 51 are respectively a first inner sleeve 511 and a second inner sleeve 512, and the two abutting sleeves 52 are respectively a first outer sleeve 521 and a second outer sleeve 522. An annular plate 1 5211 is fixed to the end surface of the first outer sleeve 521, and the end surface of the first inner sleeve 511 and the end surface of the moving cylinder 1 are fixedly connected to the side surface of the annular plate 1 5211. An annular plate 2 5221 is fixed to the end surface of the second outer sleeve 522 away from the first outer sleeve 521, and the end surface of the second inner sleeve 512 is fixedly connected to the side surface of the annular plate 2 5221.

[0025] Reference Figure 2 and Figure 6 The inner circumference of the annular plate 5221 is fixed with a ventilation sleeve 7, and a fan 71 is installed in the ventilation sleeve 7. The end surface of the ventilation sleeve 7 close to the moving cylinder 1 is provided with an annular groove 72, and the inner circumference of the moving cylinder 1 is in contact with the outer circumference of the annular groove 72. Toxic and harmful gases will be generated during the bellows welding process. The fan 71 can accelerate the discharge of toxic and harmful gases, and at the same time provide effective ventilation and heat dissipation functions for the moving cylinder 1, thereby avoiding overheating of the device affecting the welding effect.

[0026] Reference Figure 5 The outer circumference of the abutting sleeve 52 can fit with the trough of the inner circumference of the bellows. The outer circumference of the first inner sleeve 511 is sleeved and fixed with a ring 1 5111, and the outer circumference of the second inner sleeve 512 is sleeved and fixed with a ring 2 5121. Two symmetrically arranged cylinders 3 53 are fixed between the ring 1 5111 and the ring 2 5121. The outer circumference of the connecting sleeve 51 is provided with a plurality of blocks 54 at equal intervals along its own circumference. The connecting sleeve 51 is provided with a pushing assembly 6 for pushing the blocks 54 to slide along the radial direction of the connecting sleeve 51. The outer circumference of the abutting sleeve 52 is provided with a through groove 55 for penetrating the blocks 54. The side of the blocks 54 away from the connecting sleeve 51 can fit with the troughs and peaks of the inner circumference of the bellows.

[0027] First, put the two abutment sleeves 52 into the bellows, and the outer circumference of the abutment sleeve 52 fits with the trough of the inner circumference of the bellows, so that the abutment sleeve 52 and the bellows are coaxially arranged, and then use the pushing component 6 to move the block 54 on the second inner sleeve 512 in the direction away from the second inner sleeve 512, so that the block 54 is engaged with the bellows, and the position of the second outer sleeve 522 remains unchanged; then start the cylinder three 53, and the cylinder three 53 pushes the ring one 5111 to move in the direction away from the ring two 5121, and the ring one 5111 drives The first inner sleeve 511 moves. After the first inner sleeve 511 moves a certain distance, the pushing assembly 6 is used to make the block 54 on the first inner sleeve 511 engage with the bellows, and the position of the first outer sleeve 521 remains unchanged; then the cylinder three 53 is started to make the ring two 5121 move in the direction close to the ring one 5111, thereby driving the second outer sleeve 522 to move in the bellows. After the second outer sleeve 522 stops moving, the first inner sleeve 511 is moved again, and the cycle is repeated, thereby achieving smooth movement of the welding gun 23 in the bellows.

[0028] Reference Figure 7 A guide rod 56 is fixed to the side of the block 54 near the connecting sleeve 51, and a guide groove 57 for passing the guide rod 56 is provided on the outer circumference of the connecting sleeve 51. A spring 58 is sleeved on the outer circumference of the guide rod 56, one end of the spring 58 is fixedly connected to the outer circumference of the connecting sleeve 51, and the other end of the spring 58 is fixedly connected to the side of the block 54. The pushing assembly 6 includes a pushing ring 61 sleeved on the outer circumference of the connecting sleeve 51, and the pushing ring 61 is rotatably connected to the connecting sleeve 51. A plurality of arc plates 62 are fixed to the side of the pushing ring 61 near the block 54, and the arc plates 62 correspond to the block 54 one by one. A clearance groove 541 for passing the arc plates 62 is provided on the side of the block 54, and a stopper 621 is fixed to one end of the arc plate 62, and the distance between the side of the arc plate 62 away from the stopper 621 and the connecting sleeve 51 gradually decreases. A cylinder 4 63 is fixed to the inner circumferential surface of the abutting sleeve 52 , and a push rod 64 is hingedly connected to the end of the piston rod of the cylinder 4 63 , and the push rod 64 is rotatably connected to the push ring 61 .

[0029] Start cylinder four 63, cylinder four 63 drives the push ring 61 to rotate through the push rod 64, the push ring 61 drives the arc plate 62 to rotate, and the arc plate 62 drives the block 54 to slide radially along the connecting sleeve 51 through the clearance groove 541, thereby realizing the engagement and separation of the block 54 and the bellows.

[0030] Reference Figure 6 and Figure 7The outer circumference of the first outer sleeve 521 is provided with a fitting groove 5212, and a fitting ring 5222 is fixed to the end surface of the second outer sleeve 522 close to the first outer sleeve 521. The fitting ring 5222 can be inserted into the fitting groove 5212, and the inner circumference of the fitting ring 5222 fits with the outer circumference of the fitting groove 5212. The outer circumference of the first outer sleeve 521 is provided with a plurality of slots 5213 connected to the fitting groove 5212, and a plurality of inserting pieces 5223 are fixed to the side surface of the fitting ring 5222 close to the first outer sleeve 521, and the inserting pieces 5223 can be inserted into the slots 5213.

[0031] When the first outer sleeve 521 is displaced relative to the second outer sleeve 522, the inserting piece 5223 is displaced in the slot 5213, thereby ensuring a tight connection between the first outer sleeve 521 and the second outer sleeve 522, thereby enhancing the overall stability of the device.

[0032] The implementation principle of the automatic bellows welding equipment in the embodiment of the present application is as follows: the moving cylinder 1 is driven by the walking mechanism 5 to move to the welding position in the bellows, and the moving plate 2 is pushed to move by the driving component 3. Combined with the cooperation of cylinder 1 24 and cylinder 2 25, the welding gun 23 can be automatically adjusted to the optimal welding angle and move along the radial direction of the bellows for welding, thereby realizing an efficient and stable automated welding process, ensuring stable welding quality and a high degree of automation, and reducing manual operations and possible errors.

[0033] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A bellows automatic welding equipment, characterized in that: The invention comprises a moving cylinder (1) and a walking mechanism (5) for pushing the moving cylinder (1) to move in a corrugated tube, the moving cylinder (1) being coaxially arranged with the corrugated tube, a cylindrical bracket (11) being rotatably installed in the moving cylinder (1), a rotating assembly (4) for driving the cylindrical bracket (11) to rotate being arranged in the moving cylinder (1), a mounting seat (12) being fixed in the cylindrical bracket (11), a connecting plate (13) being slidably installed on the mounting seat (12) along the length direction of the cylindrical bracket (11), a driving assembly (3) for driving the connecting plate (13) to move being arranged on the mounting seat (12), and a rotating assembly (4) for driving the connecting plate (13) to move being fixed on the bottom surface of the connecting plate (13). A movable plate (2), wherein a rotating plate (21) is rotatably mounted on one end of the movable plate (2) away from the connecting plate (13), a guide rail (22) is mounted on the side of the rotating plate (21) away from the movable plate (2), a welding gun (23) is slidably mounted on the guide rail (22) along the length direction of the rotating plate (21), a cylinder (24) is hingedly mounted on the top surface of the movable plate (2), the piston rod end of the cylinder (24) is hingedly mounted on the side of the rotating plate (21), a cylinder (25) is fixedly mounted on the side of the rotating plate (21) away from the cylinder (24), and the piston rod end of the cylinder (25) is fixedly connected to the welding gun (23).

2. The automatic bellows welding equipment according to claim 1 is characterized in that: The driving assembly (3) comprises a connecting block (31) fixed to a side surface of the connecting plate (13); a horizontally arranged lead screw (32) is rotatably mounted on the mounting seat (12); the connecting block (31) is sleeved on the outer circumference of the lead screw (32); the connecting block (31) and the lead screw (32) are threadedly matched; a motor (33) is fixed to the mounting seat (12); an output end of the motor (33) is coaxially fixed to the lead screw (32); a horizontally arranged guide rail (34) is fixed to the mounting seat (12); and the connecting plate (13) slides along the length direction of the lead screw (32) via the guide rail (34).

3. The automatic bellows welding equipment according to claim 1 is characterized in that: The rotating assembly (4) comprises a gear ring (41) fixed to the inner circumference of the moving cylinder (1), a second motor (42) is fixed to the inner circumference of the cylindrical support (11), a gear (43) is coaxially fixed to the output end of the second motor (42), and the gear (43) and the gear ring (41) are meshed with each other.

4. The automatic bellows welding equipment according to claim 1 is characterized in that: The walking mechanism (5) comprises two connecting sleeves (51), the outer circumference of which is sleeved with a contact sleeve (52), the two connecting sleeves (51) are respectively a first inner sleeve (511) and a second inner sleeve (512), the two contact sleeves (52) are respectively a first outer sleeve (521) and a second outer sleeve (522), the end face of the first outer sleeve (521) is fixed with an annular plate 1 (5211), the end face of the first inner sleeve (511) and the end face of the moving cylinder (1) are both fixedly connected to the side face of the annular plate 1 (5211), the end face of the second outer sleeve (522) away from the first outer sleeve (521) is fixed with an annular plate 2 (5221), the end face of the second inner sleeve (512) is fixedly connected to the side face of the annular plate 2 (5221); The outer circumference is capable of fitting with the troughs of the inner circumference of the corrugated tube; the outer circumference of the first inner sleeve (511) is sleeved and fixed with a first ring (5111); the outer circumference of the second inner sleeve (512) is sleeved and fixed with a second ring (5121); two symmetrically arranged cylinders (53) are fixed between the first ring (5111) and the second ring (5121); the outer circumference of the connecting sleeve (51) is provided with a plurality of blocks (54) at equal intervals along its own circumference; the connecting sleeve (51) is provided with a pushing component (6) for pushing the blocks (54) to slide along the radial direction of the connecting sleeve (51); the outer circumference of the abutting sleeve (52) is provided with a through groove (55) for penetrating the blocks (54); the side of the blocks (54) away from the connecting sleeve (51) is capable of fitting with the troughs and peaks of the inner circumference of the corrugated tube.

5. The automatic bellows welding equipment according to claim 4 is characterized in that: The pushing assembly (6) comprises a pushing ring (61) sleeved on the outer circumference of the connecting sleeve (51), the pushing ring (61) being rotatably connected to the connecting sleeve (51), a plurality of arc-shaped plates (62) being fixed to the side of the pushing ring (61) close to the clamping block (54), the arc-shaped plates (62) corresponding to the clamping block (54) one by one, a clearance groove (541) for passing the arc-shaped plates (62) is opened on the side of the clamping block (54), a stopper (621) is fixed to one end of the arc-shaped plate (62), the distance between the side of the arc-shaped plate (62) away from the stopper (621) and the connecting sleeve (51) gradually decreases, a cylinder four (63) is fixed to the inner circumference of the abutting sleeve (52), a pushing rod (64) is hinged at the end of the piston rod of the cylinder four (63), and the pushing rod (64) is rotatably connected to the pushing ring (61).

6. The automatic bellows welding equipment according to claim 4, characterized in that: A guide rod (56) is fixed to the side of the clamping block (54) close to the connecting sleeve (51); a guide groove (57) for passing the guide rod (56) is provided on the outer peripheral surface of the connecting sleeve (51); a spring (58) is sleeved on the outer peripheral surface of the guide rod (56); one end of the spring (58) is fixedly connected to the outer peripheral surface of the connecting sleeve (51), and the other end of the spring (58) is fixedly connected to the side of the clamping block (54).

7. The automatic bellows welding equipment according to claim 4 is characterized in that: The outer circumference of the first outer sleeve (521) is provided with a fitting groove (5212), and the end surface of the second outer sleeve (522) close to the first outer sleeve (521) is fixed with a fitting ring (5222), and the fitting ring (5222) can be inserted into the fitting groove (5212), and the inner circumference of the fitting ring (5222) is fitted with the outer circumference of the fitting groove (5212). The outer circumference of the first outer sleeve (521) is provided with a plurality of slots (5213) connected with the fitting groove (5212), and the side surface of the fitting ring (5222) close to the first outer sleeve (521) is fixed with a plurality of inserts (5223), and the inserts (5223) can be inserted into the slots (5213).

8. The automatic bellows welding equipment according to claim 4, characterized in that: A ventilation sleeve (7) is fixedly mounted on the inner circumference of the annular plate 2 (5221), the end surface of the ventilation sleeve (7) being capable of abutting against the end surface of the movable cylinder (1), and a fan (71) is installed in the ventilation sleeve (7).

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