Corrugated pipe joint welding equipment

Abstract

The invention relates to the technical field of welding equipment, in particular to corrugated pipe joint welding equipment which comprises a welding table, a bottom plate is fixedly mounted at the upper end of the welding table, a three-axis linear module is fixedly mounted at the upper end of the bottom plate, a rotating module is fixedly mounted on a sliding table of the three-axis linear module, and the rotating end of the rotating module is connected with a welding device; a rotary chuck is fixedly installed at the upper end of the bottom plate, a round hole is formed between the left side and the right side of the rotary chuck in a penetrating mode, a rotary cylinder is rotatably installed in the round hole, and a synchronous pipe body is fixedly installed at the end, close to the welding device, of the rotary cylinder. The end, making contact with the annular baffle, of the connector body is connected to the annular rubber ring in a sleeving mode, the connector body is supported through the annular rubber ring, and therefore preliminary positioning of the connector body is completed; the corrugated pipe body is clamped and fixed through cooperation of the two clamping assemblies.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to a bellows joint welding equipment. Background Art

[0002] Common bellows are mainly divided into metal and non-metal bellows. A bellows is composed of a pipe body and joints located at both ends of the pipe body. During the production of bellows, it is necessary to connect and assemble the pipe body of the bellows with the joints. In the prior art, the pipe body of the bellows and the joints are mostly fixed by welding. Especially when connecting a metal bellows and a metal joint, most of them use welding equipment for welding and assembling.

[0003] The existing bellows and joint assembly method is as follows: First, the bellows and the joints are fixed by a clamping device, then the bellows and the joints are aligned and spliced, and then a rotating device drives the bellows and the joints to rotate, so as to be able to fully weld the butt joint of the bellows and the joints. However, there are certain defects in the welding process: During the welding process, it is impossible to ensure that the pipe body and the joints remain coaxially fixed. During rotation, the pipe body and the joints will generate eccentric vibration, or the pipe body and the joints cannot rotate synchronously, resulting in misalignment between the pipe body and the joints, making the pipe body and the joints unable to be accurately aligned, and causing the weld seam between the pipe body and the joints to be uneven or misaligned, affecting the welding accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a bellows joint welding equipment to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A bellows joint welding equipment, including a welding table, a bottom plate is fixedly installed at the upper end of the welding table, a three-axis linear module is fixedly installed at the upper end of the bottom plate, a rotating module is fixedly installed on the sliding table of the three-axis linear module, and the rotating end of the rotating module is connected to a welding device; A rotating chuck is fixedly installed at the upper end of the bottom plate. A circular hole is penetrated between the left and right sides of the rotating chuck, and a rotating cylinder is rotatably installed in the circular hole. A synchronous pipe body is fixedly installed at one end of the rotating cylinder close to the welding device. An annular baffle is fixedly sleeved at one end of the synchronous pipe body close to the rotating cylinder. A transmission mechanism is installed in the synchronous pipe body, and inner support type clamping mechanisms are symmetrically installed on the synchronous pipe body on the side of the transmission mechanism. A joint body is sleeved outside the synchronous pipe body, one end of the joint body is spliced with a bellows body, and a rotating fixture for clamping the bellows body is installed at the upper end of the bottom plate.

[0006] Preferably, a blowing support is fixedly installed at the upper end of the bottom plate below the welding device. A blowing pipe is installed obliquely downward at the upper end of the blowing support. A light blocking plate is fixedly installed at the upper end of the bottom plate on the front side of the blowing pipe.

[0007] Preferably, a synchronous pulley is fixedly sleeved at one end of the rotary cylinder away from the synchronous pipe body, a belt is sleeved outside the synchronous pulley, a driving pulley is sleeved at the lower end of the inner side of the belt, and the driving pulley is driven by a motor shaft of a servo motor fixedly installed at the lower end of the rotary chuck.

[0008] Preferably, the transmission mechanism includes a cylinder mounting plate fixedly installed at the upper end of the bottom plate, a tensioning cylinder is fixedly installed on the cylinder mounting plate, a bearing seat is fixedly installed at the end of the inner rod of the tensioning cylinder, a round shaft is rotatably installed inside the bearing seat, and a clamp pull rod is fixedly installed at one end of the round shaft away from the bearing seat. One end of the clamp pull rod away from the round shaft sequentially penetrates through the inner cavities of the rotary cylinder and the synchronous pipe body and extends to the outside; Push blocks are symmetrically and fixedly connected to the side surface of the clamp pull rod in the inner cavity of the synchronous pipe body, and sliders are symmetrically and fixedly connected to the side surfaces of the two push blocks; Guide grooves are symmetrically formed on the cylindrical surface of the synchronous pipe body, sliding grooves are symmetrically formed on the inner side walls of the guide grooves, the two push blocks are respectively slidably connected to the adjacent guide grooves, the sliders are slidably connected to the sliding grooves, and two inner support type clamping mechanisms are symmetrically installed in the two guide grooves.

[0009] Preferably, the clamping mechanism includes a transmission seat arranged on the side surface of the synchronous pipe body, grooves are symmetrically formed at both ends of the transmission seat, a convex contraction groove is recessed inward on the side of the transmission seat away from the synchronous pipe body, a convex plate is slidably installed in the contraction groove, an anti-slip pad is fixedly installed on the convex plate, and a plurality of elastic sheets are equidistantly installed between the convex plate and the bottom of the inner cavity of the contraction groove. Activity arms are rotatably installed in the grooves at both ends of the transmission seat through rotating shafts, and one end of one activity arm away from the sliding groove is rotatably connected to the guide groove through a rotating shaft, and one end of the other activity arm close to the sliding groove is rotatably connected to the push block through a hinge.

[0010] Preferably, a strengthening block is fixedly installed on the side of the transmission seat close to the guide groove, the activity arm and the strengthening block are both in sliding contact with the guide groove, and both sides of the elastic sheet are respectively abutted against the convex plate and the bottom of the inner cavity of the contraction groove.

[0011] Preferably, an inner support type clamping assembly is installed at one end of the synchronous pipe body away from the rotary cylinder; The clamping assembly includes a regular polygon block fixedly installed at one end of the synchronous tube body away from the rotating cylinder. Through holes are formed through the side surface of the regular polygon block. One end of the clamp pull rod passes through the through hole and extends to the outside. A conical cylinder is fixedly sleeved at the end of the clamp pull rod outside the through hole. A plurality of rotating grooves are formed in an annular array on the side of the regular polygon block away from the synchronous tube body. A locking claw is rotatably installed in each rotating groove through a rotating shaft. An arc-shaped hole is formed through the side surface of the locking claw. The plurality of locking claws are distributed in an annular array outside the conical cylinder. A pressing block is fixedly connected to the side of the locking claw close to the conical cylinder. The pressing block is in pressing contact with the inclined side surface of the conical cylinder. An arc-shaped rod is fixedly installed in the rotating groove. One end of the arc-shaped rod is slidably inserted into the arc-shaped hole. A return spring is sleeved on the arc-shaped rod. The two ends of the return spring are respectively abutted against the side wall of the rotating groove and the side surface of the locking claw.

[0012] Preferably, the rotary clamp includes a support plate fixedly installed at the upper end of the bottom plate. A reciprocating groove is recessed downward at the upper end of the support plate. A lead screw is rotatably installed in the reciprocating groove. The lead screw is driven by the output shaft of a stepping motor fixedly installed on the side surface of the support plate. A threaded sleeve is sleeved on the lead screw. The threaded sleeve is slidably connected to the left and right of the reciprocating groove. A moving plate is fixedly installed at the upper end of the threaded sleeve. T-shaped guide rails are fixedly installed symmetrically left and right at the upper end of the moving plate. The lower end of the moving plate is in sliding contact with the upper end of the support plate left and right. Clamping assemblies are installed symmetrically front and back at the upper end of the moving plate.

[0013] Preferably, the clamping assembly includes a concave base slidably installed front and back at the upper end of the moving plate. T-shaped grooves are formed symmetrically left and right at the lower end of the concave base. The T-shaped grooves are slidably connected to the T-shaped guide rails front and back. Clamping cylinders are fixedly installed symmetrically left and right on the side surface of the concave base. The clamping cylinders are fixedly installed at the upper end of the moving plate. Concave frames are fixedly installed symmetrically left and right at the upper end of the concave base. Clamping rollers are rotatably installed symmetrically up and down on the side surface of the concave frame. The clamping rollers are in rolling contact with the corrugated pipe body.

[0014] Preferably, a bearing assembly is fixedly installed between the two clamping assemblies at the upper end of the moving plate. The bearing assembly includes a lifting cylinder fixedly installed at the upper end of the moving plate. The upper end of the inner rod of the lifting cylinder is fixedly installed with a concave seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, with the following advantages: 1. Sleeve the joint body on the synchronous pipe body, so that the end of the joint body that contacts the annular baffle is sleeved on the annular rubber ring, and the joint body is supported by the annular rubber ring to complete the preliminary positioning of the joint body; the bellows body is clamped and fixed by the two clamping components, and then the bellows body is driven to be slowly sleeved on the synchronous pipe body by the rotating clamp until one end of the bellows body contacts the synchronous pipe body, thereby completing the splicing of the bellows body and the joint body.

[0016] 2. The transmission mechanism drives the push block and the tapered cylinder to move to the right, so that the clamping mechanism expands outward along the synchronous pipe body, and the anti-slip pad in the clamping mechanism firmly presses against the inner arms of the joint body and the bellows body, thereby completing the clamping and fixing of the joint body and the bellows body; at the same time, the tapered cylinder pushes the multiple locking claws in the clamping assembly to open and rotate outward, and the multiple locking claws cooperate to clamp and fix the bellows body again. The clamping assembly and the clamping mechanism cooperate to firmly clamp and fix the joint body and the bellows body, and keep the joint body and the bellows body coaxially fixed.

[0017] 3. Start the welding device for welding, and at the same time, the motor shaft of the servo motor drives the driving pulley to rotate, the driving pulley drives the synchronous pulley to rotate through the belt, the synchronous pulley drives the synchronous tube body to rotate synchronously through the rotating cylinder, and the synchronous tube body drives the clamping mechanism and the clamping assembly to rotate synchronously; the clamping mechanism and the clamping assembly are arranged to cooperate to drive the joint body and the bellows body to rotate synchronously, so that the joint body and the bellows body can maintain synchronous rotation during rotation, and there will be no eccentric vibration or misalignment. At the same time, the joint body and the bellows body are accurately aligned at the joint, ensuring the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural stereogram of the bellows joint welding equipment of the present invention; Figure 2 It is a three-dimensional diagram of the local structure of the bellows joint welding equipment of the present invention; Figure 3 It is a partial structural cross-sectional view of the bellows joint welding equipment of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 It is a cross-sectional view of the structure of the bellows body, synchronous pipe body, clamping mechanism and clamping assembly of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 It is an exploded view of the bellows body, synchronous tube body, clamping mechanism and clamping assembly structure of the present invention.

[0019] In the figure: 1. Welding table; 11. Bottom plate; 12. Three-axis linear module; 13. Rotation module; 14. Welding device; 15. Blowing bracket; 16. Blowing pipe; 17. Light shielding plate; 2. Rotating chuck; 21. Round hole; 22. Rotating cylinder; 23. Synchronous pulley; 24. Belt; 25. Driving pulley; 3. Synchronous pipe body; 31. Annular baffle; 32. Regular polygon block; 33. Guide groove; 34. Chute; 35. Rotation groove; 4. Cylinder mounting plate; 41. Tightening cylinder; 42. Bearing seat; 43. Round shaft; 44. Fixture pull rod; 45. Pushing block; 46. Slide block; 5. Transmission seat; 51. Groove; 52. Shrinkage groove; 53. Reinforcing block; 54. Convex plate; 55. Elastic piece; 56. Movable arm; 6. Locking claw; 61. Arc hole; 62. Extrusion block; 63. Arc rod; 64. Return spring; 65. Conical cylinder; 7. Joint body; 71. Bellows body; 72. Support plate; 73. Reciprocating groove; 74. Lead screw; 75. Threaded sleeve; 76. Moving plate; 77. T-shaped guide rail; 8. Concave base; 81. Clamping cylinder; 82. Concave frame; 83. Clamping roller; 9. Lifting cylinder; 91. Concave seat. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a bellows joint welding device, including a welding table 1, a bottom plate 11 is fixedly installed at the upper end of the welding table 1, a three-axis linear module 12 is fixedly installed at the upper end of the bottom plate 11, a rotation module 13 is fixedly installed on the sliding table of the three-axis linear module 12, the rotation end of the rotation module 13 is connected to the welding device 14, the rotation module 13 can be set as a rotation motor, the rotation motor is fixedly installed on the sliding table, the connecting shaft of the rotation motor is connected to the welding device 14, the welding heads of the welding device 14 are distributed obliquely downward, a controller is fixedly installed at the upper end of the welding table 1, and the operation and stop of the welding device are controlled through the controller; At the upper end of the bottom plate 11, a rotating chuck 2 is fixedly installed. A circular hole 21 is penetrated between the left and right sides of the rotating chuck 2. A rotating cylinder 22 is rotatably installed in the circular hole 21. At one end of the rotating cylinder 22 close to the welding device 14, a synchronous pipe body 3 is fixedly installed. At one end of the synchronous pipe body 3 close to the rotating cylinder 22, an annular baffle 31 is fixedly sleeved. A transmission mechanism is installed in the synchronous pipe body 3. On the side of the transmission mechanism, an inner-supporting clamping mechanism is symmetrically installed on the synchronous pipe body 3. The outside of the synchronous pipe body 3 is sleeved with a joint body 7. One end of the joint body 7 is spliced with a corrugated pipe body 71. At the upper end of the bottom plate 11, a rotating fixture for clamping the corrugated pipe body 71 is installed.

[0022] When the joint body 7 is sleeved on the synchronous pipe body 3, one end of the joint body 7 is in contact with the annular baffle 31. An annular rubber ring is fixedly installed on the side of the annular baffle 31 away from the rotating chuck 2. When the joint body 7 is in contact with the annular baffle 31, at this time, one end of the joint body 7 is sleeved on the annular rubber ring. At this time, the inner side wall of one end of the joint body 7 is in close contact with the outer side wall of the annular rubber ring, supporting the joint body 7, thereby completing the preliminary positioning of the joint body 7.

[0023] At the upper end of the bottom plate 11, below the welding device 14, a blowing bracket 15 is fixedly installed. The upper end of the blowing bracket 15 is inclined downward to install a blowing pipe 16. At the upper end of the bottom plate 11, in front of the blowing pipe 16, a light-shielding plate 17 is fixedly installed. The light-shielding plate 17 is used to block the flash and the blown gas during welding. The air outlet end of the blowing pipe 16 and the welding head of the welding device 14 both face the weld. The weld is the butt joint of the joint body 7 and the corrugated pipe body 71.

[0024] Through the provided blowing pipe 16, the butt joint of the joint body 7 and the corrugated pipe body 71 can be cleaned, and at the same time, the weld can be cooled in time.

[0025] Please refer to Figure 2 and Figure 3 , at one end of the rotating cylinder 22 away from the synchronous pipe body 3, a synchronous pulley 23 is fixedly sleeved. The outside of the synchronous pulley 23 is sleeved with a belt 24. The lower end inside the belt 24 is sleeved with a driving pulley 25. The driving pulley 25 is driven by the motor shaft of a servo motor fixedly installed at the lower end of the rotating chuck 2.

[0026] The servo motor is fixedly installed at the lower end of the rotating chuck 2. The motor shaft is fixedly connected to the driving pulley 25 through a flange, a coupling, etc.; The motor shaft of the servo motor drives the driving pulley 25 to rotate. The driving pulley 25 drives the synchronous pulley 23 to rotate through the belt 24. The synchronous pulley 23 drives the synchronous pipe body 3 to rotate synchronously through the rotating cylinder 22.

[0027] Please refer toFigures 3 to 7 , the transmission mechanism includes a cylinder mounting plate 4 fixedly installed at the upper end of the base plate 11. A tensioning cylinder 41 is fixedly installed on the cylinder mounting plate 4. The end of the inner rod of the tensioning cylinder 41 is fixedly installed with a bearing seat 42. A round shaft 43 is rotatably installed inside the bearing seat 42. One end of the round shaft 43 away from the bearing seat 42 is fixedly installed with a clamp pull rod 44. One end of the clamp pull rod 44 away from the round shaft 43 sequentially penetrates through the inner cavities of the rotating cylinder 22 and the synchronous pipe body 3 and extends to the outside; On the side surface of the clamp pull rod 44 in the inner cavity of the synchronous pipe body 3, push blocks 45 are symmetrically and fixedly connected. On the side surfaces of the two push blocks 45, sliders 46 are symmetrically and fixedly connected; On the cylindrical surface of the synchronous pipe body 3, guide grooves 33 are symmetrically opened. On the inner side walls of the guide grooves 33, sliding grooves 34 are symmetrically opened. The two push blocks 45 are respectively slidably connected to the adjacent guide grooves 33. The sliders 46 are slidably connected to the sliding grooves 34. Two inner support type clamping mechanisms are symmetrically installed in the two guide grooves 33.

[0028] When the inner rod of the tensioning cylinder 41 contracts, it drives the bearing seat 42 and the round shaft 43 to move away from the rotating chuck 2. The round shaft 43 drives the clamp pull rod 44 to move synchronously. At this time, the clamp pull rod 44 drives the push block 45 to slide along the guide groove 33. The push block 45 drives the slider 46 to slide along the sliding groove 34, so that the push block 45 can stably slide along the guide groove 33; At this time, the push block 45 moves closer to the rotating chuck 2. At the same time, the push block 45 pushes the clamping mechanism, so that the clamping mechanism expands outward along the synchronous pipe body 3 and abuts against the inner arms of the joint body 7 and the corrugated pipe body 71, thereby completing the clamping and fixing of the joint body 7 and the corrugated pipe body 71.

[0029] When the inner rod of the tensioning cylinder 41 extends outward, it makes the bearing seat 42 and the round shaft 43 move closer to the rotating chuck 2, makes the clamp pull rod 44 drive the push block 45 to move back to the reset position, and the push block 45 drives the clamping mechanism to contract inward along the synchronous pipe body 3, so that the clamping mechanism releases the clamping and fixing of the joint body 7 and the corrugated pipe body 71.

[0030] Please refer to Figures 5 to 7, the clamping mechanism includes a transmission seat 5 arranged on the side of the synchronous tube body 3. Grooves 51 are symmetrically formed at both ends of the transmission seat 5. A convex-shaped contraction groove 52 is recessed inward on the side of the transmission seat 5 away from the synchronous tube body 3. A convex plate 54 is slidably installed in the contraction groove 52. An anti-slip pad is fixedly installed on the convex plate 54. A plurality of elastic pieces 55 are equidistantly installed between the convex plate 54 and the bottom of the inner cavity of the contraction groove 52. In the grooves 51 at both ends of the transmission seat 5, movable arms 56 are rotatably installed through rotating shafts. The two movable arms 56 are distributed in a V shape. One end of the movable arm 56 far from the sliding groove 34 is rotatably connected to the guiding groove 33 through a rotating shaft, and one end of the other movable arm 56 close to the sliding groove 34 is rotatably connected to the push block 45 through a hinge.

[0031] A reinforcing block 53 is fixedly installed on the side of the transmission seat 5 close to the guiding groove 33. The movable arms 56 and the reinforcing block 53 are both in sliding contact with the guiding groove 33. Both sides of the elastic piece 55 are respectively in abutment with the convex plate 54 and the bottom of the inner cavity of the contraction groove 52. The elastic piece 55 applies an elastic force to the convex plate 54.

[0032] When the push block 45 moves closer to the rotary chuck 2, the push block 45 pushes the adjacent movable arm 56 to rotate through the hinge, causing the end of the movable arm 56 away from the push block 45 to rotate away from the synchronous tube body 3. At this time, the movable arm 56 drives the transmission seat 5 to expand outwards. The transmission seat 5 drives the movable arm 56 at its other end to rotate synchronously, causing the two movable arms 56 to move closer to each other. At the same time, the two movable arms 56 drive the transmission seat 5 to expand outwards. At this time, the transmission seat 5 moves closer to the rotary chuck 2 while expanding outwards; The transmission seat 5 drives the convex plate 54 to move synchronously, causing the convex plate 54 to move closer to the rotary chuck 2 while expanding outwards. When the anti-slip pad on the convex plate 54 contacts the inner walls of the joint body 7 and the corrugated pipe body 71, at this time, the transmission seat 5 drives the convex plate 54 to continue to move closer to the rotary chuck 2 while expanding outwards for a certain distance, causing the transmission seat 5 to slowly sleeved on the convex plate 54. At the same time, since the anti-slip pad and the convex plate 54 are blocked and cannot continue to expand outwards, but the anti-slip pad and the convex plate 54 can continue to move towards the rotary chuck 2 for a certain distance. At this time, the anti-slip pad gives a thrust to the inner wall of the corrugated pipe body 71, further aligning and splicing the corrugated pipe body 71 and the joint body 7; At the same time, the convex plate 54 squeezes the elastic piece 55. Under the action of the elastic force of the elastic piece 55, the convex plate 54 drives the anti-slip pad to be respectively in abutment with the inner walls of the joint body 7 and the corrugated pipe body 71, thereby completing the clamping and fixing of the joint body 7 and the corrugated pipe body 71.

[0033] Conversely, when the pushing block 45 moves away from the rotary chuck 2, the two movable arms 56 rotate away from each other. The movable arms 56 drive the transmission seat 5 to move back. The transmission seat 5 drives the convex plate 54 and the anti-slip pad to separate from the inner walls of the joint body 7 and the corrugated pipe body 71 until the pushing block 45, the movable arms 56, the transmission seat 5, the convex plate 54 and the anti-slip pad are reset.

[0034] Initial state, The pushing block 45 is at one end of the sliding groove 34 away from the transmission seat 5. At this time, the end of the sliding groove 34 close to the transmission seat 5 can also be defined as the right end, and the other end of the sliding groove 34 is defined as the left end. At this time, it can be said that the pushing block 45 is at the left end of the sliding groove 34. At this time, the two movable arms 56 are opened to the maximum state, but the two movable arms 56 will never be parallel. At this time, the transmission seat 5 contracts into the guide groove 33, and one end of the strengthening block 53 extends into the inner cavity of the synchronous pipe body 3. At this time, the joint body 7 can be normally sleeved on the synchronous pipe body 3, and the convex plate 54 and the anti-slip pad will not cause obstruction; During the process of the clamping mechanism expanding outwards, the strengthening block 53 is always in the guide groove 33.

[0035] By rotating the synchronous pipe body 3, the pushing block 45, the strengthening block 53 and the movable arms 56 are driven to rotate synchronously, so that the clamping mechanism rotates synchronously. Since the clamping mechanism forms a tight abutment with the inner walls of the joint body 7 and the corrugated pipe body 71 and remains relatively fixed, when the clamping mechanism rotates, it will drive the joint body 7 and the corrugated pipe body 71 to rotate synchronously.

[0036] By arranging the clamping mechanism to clamp and fix the joint body 7 and the corrugated pipe body 71 at the same time, and both the joint body 7 and the corrugated pipe body 71 are driven to rotate by the clamping mechanism, so that the joint body 7 and the corrugated pipe body 71 are coaxially fixed. When rotating, the joint body 7 and the corrugated pipe body 71 can rotate synchronously without eccentric vibration or dislocation, so that the butt joint of the joint body 7 and the corrugated pipe body 71 is accurately aligned, ensuring the welding precision.

[0037] When the pushing block 45 rotates, it drives the fixture pull rod 44 to rotate synchronously. The fixture pull rod 44 drives the round shaft 43 to rotate along the bearing seat 42, so that the fixture pull rod 44 can rotate simultaneously without obstruction.

[0038] Please refer to Figure 4 、 Figure 5 and Figure 7 , an inner support type clamping assembly is installed at one end of the synchronous pipe body 3 away from the rotary cylinder 22; The clamping assembly includes a regular polygon block 32 fixedly installed at one end of the synchronous tube body 3 away from the rotating cylinder 22. Through holes are formed in the side surface of the regular polygon block 32. One end of a clamp pull rod 44 penetrates through the through hole and extends to the outside. A conical cylinder 65 is fixedly sleeved at the end of the clamp pull rod 44 outside the through hole. The end with a smaller diameter of the conical cylinder 65 is close to the regular polygon block 32. A plurality of rotating grooves 35 are formed in a circular array on the side of the regular polygon block 32 away from the synchronous tube body 3. A locking claw 6 is rotatably installed in each rotating groove 35 through a rotating shaft. An arc-shaped hole 61 is formed in the side surface of the locking claw 6. The plurality of locking claws 6 are distributed in a circular array outside the conical cylinder 65. A pressing block 62 is fixedly connected to the side of the locking claw 6 close to the conical cylinder 65. The pressing block 62 is in pressing contact with the inclined side surface of the conical cylinder 65; An arc-shaped rod 63 is fixedly installed in the rotating groove 35. One end of the arc-shaped rod 63 is slidably inserted into the arc-shaped hole 61. A return spring 64 is sleeved on the arc-shaped rod 63. The two ends of the return spring 64 are respectively abutted against the side wall of the rotating groove 35 and the side surface of the locking claw 6. The return spring 64 exerts an elastic force on the locking claw 6.

[0039] When the locking claw 6 rotates along the rotating shaft, the arc-shaped hole 61 on the locking claw 6 can slide along the arc-shaped rod 63, that is, the arc-shaped hole 61, the arc-shaped rod 63 and the rotating shaft are coaxial.

[0040] When the inner rod of the tensioning cylinder 41 contracts, the clamp pull rod 44 moves to the right. At this time, the clamp pull rod 44 drives the conical cylinder 65 to move close to the regular polygon block 32. At the same time, the conical cylinder 65 pushes the plurality of pressing blocks 62 away from each other. The pressing block 62 drives the locking claw 6 to rotate outwards and open. The locking claw 6 slides along the arc-shaped rod 63. At the same time, the locking claw 6 compresses the return spring 64 until the end of the locking claw 6 abuts against the inner wall of the corrugated pipe body 71. The corrugated pipe body 71 is clamped and fixed again through the cooperation of the plurality of locking claws 6.

[0041] At this time, the tensioning cylinder 41 stops contracting. When the locking claw 6 completes the clamping and fixing of the corrugated pipe body 71, the clamping mechanism simultaneously completes the clamping and fixing of the joint body 7 and the corrugated pipe body 71. Through the cooperation of the set clamping assembly and the clamping mechanism, the joint body 7 and the corrugated pipe body 71 can be firmly clamped and fixed. Moreover, the clamping assembly and the clamping mechanism both rotate with the synchronous tube body 3, that is, the clamping assembly and the clamping mechanism both rotate synchronously with the synchronous tube body 3, so that the joint body 7 and the corrugated pipe body 71 can rotate synchronously, avoiding the situation of misaligned rotation of the joint body 7 and the corrugated pipe body 71.

[0042] The diameter of the circumscribed circle of the regular polygon block 32 is smaller than the minimum inner diameter of the joint body 7 and the corrugated pipe body 71. After the locking claws 6 contract and merge, neither the locking claws 6 nor the regular polygon block 32 will hinder the joint body 7 and the corrugated pipe body 71 from being sleeved on the synchronous tube body 3.

[0043] Please refer to Figures 1 to 3 Figures 1 to 3 , the rotary fixture includes a support plate 72 fixedly installed at the upper end of the bottom plate 11. A reciprocating groove 73 is recessed downward at the upper end of the support plate 72. A lead screw 74 is rotatably installed in the reciprocating groove 73. The lead screw 74 is driven by the output shaft of a stepping motor fixedly installed on the side of the support plate 72. The stepping motor is fixedly installed on the side of the support plate 72. Rotating shafts protrude symmetrically at both ends of the lead screw 74. The lead screw 74 is rotationally connected to the support plate 72 through the rotating shafts. The output shaft and the rotating shaft are connected by a flange or a coupling, etc.; A threaded sleeve 75 is sleeved on the lead screw 74. The threaded sleeve 75 is slidably connected to the left and right of the reciprocating groove 73. The upper end of the threaded sleeve 75 is fixedly installed with a moving plate 76. T-shaped guide rails 77 are fixedly installed symmetrically left and right at the upper end of the moving plate 76. The lower end of the moving plate 76 is in sliding contact with the upper end of the support plate 72 left and right. Clamping assemblies are installed symmetrically front and back at the upper end of the moving plate 76.

[0044] The clamping assembly includes a concave base 8 slidably installed front and back at the upper end of the moving plate 76. T-shaped grooves are symmetrically opened left and right at the lower end of the concave base 8. The T-shaped grooves are slidably connected to the T-shaped guide rails 77 front and back. Clamping cylinders 81 are fixedly installed symmetrically left and right on the side of the concave base 8. The clamping cylinders 81 are fixedly installed at the upper end of the moving plate 76. The end of the inner rod of the clamping cylinder 81 is fixedly connected to the side of the concave base 8. Concave frames 82 are fixedly installed symmetrically left and right at the upper end of the concave base 8. Clamping rollers 83 are rotatably installed symmetrically up and down on the side of the concave frame 82 through bearings. The clamping rollers 83 are in rolling contact with the corrugated pipe body 71.

[0045] By adopting a servo pneumatic valve and closed-loop feedback cooperation, multiple clamping cylinders 81 are synchronized to extend and retract. Designate one clamping cylinder 81 as the main cylinder, and the remaining slave cylinders follow its movement. The error is eliminated through the PID algorithm; Each clamping cylinder 81 is independently equipped with a servo valve. The telescopic position of the inner rod of the clamping cylinder 81 is real-time fed back through a displacement sensor, such as a magnetic grating ruler. The opening degrees of the valves are dynamically adjusted through a PLC and a PID controller, so that multiple clamping cylinders 81 maintain synchronous extension and retraction.

[0046] A bearing assembly is fixedly installed between the two clamping assemblies at the upper end of the moving plate 76. The bearing assembly includes a lifting cylinder 9 fixedly installed at the upper end of the moving plate 76. The upper end of the inner rod of the lifting cylinder 9 is fixedly installed with a concave seat 91.

[0047] The concave seat 91 is used to place the corrugated pipe body 71, support and limit the corrugated pipe body 71, and then the corrugated pipe body 71 is clamped and positioned through the cooperation of two clamping assemblies.

[0048] The inner rod of the clamping cylinder 81 on the side of the concave base 8 is extended, so that the two concave bases 8 move closer to each other. When the concave base 8 moves, it drives the concave frame 82 to move closer to the bellows body 71. At the same time, the concave frame 82 drives the clamping roller 83 to clamp and fix the bellows body 71.

[0049] The output shaft of the stepper motor then drives the screw rod 74 to rotate, and the screw rod 74 drives the threaded sleeve 75 thereon to move rightward along the reciprocating groove 73, so that the threaded sleeve 75 drives the movable plate 76 to move close to the rotary chuck 2, and the movable plate 76 drives the clamping assembly thereon to move rightward synchronously, and drives the bellows body 71 to slowly be sleeved on the synchronous tube body 3 through the clamping assembly until one end of the bellows body 71 contacts the synchronous tube body 3, at which time the stepper motor stops rotating.

[0050] Working principle: When working, the joint body 7 is sleeved on the synchronous pipe body 3, so that one end of the joint body 7 is in contact with the annular baffle 31, and at the same time, the end of the joint body 7 in contact with the annular baffle 31 is sleeved on the annular rubber ring, and the joint body 7 is supported by the annular rubber ring, thereby completing the preliminary positioning of the joint body 7.

[0051] Place the bellows body 71 on the concave seat 91 so that the bellows body 71 is between the two clamping assemblies. The bellows body 71 is clamped and fixed by the cooperation of the two clamping assemblies. Then, the output shaft of the stepper motor drives the screw rod 74 to rotate, so that the threaded sleeve 75 drives the movable plate 76 to move closer to the rotary chuck 2. The movable plate 76 drives the bellows body 71 to slowly be sleeved on the synchronous tube body 3 through the clamping assembly thereon until one end of the bellows body 71 contacts the synchronous tube body 3. At this time, the stepper motor stops rotating.

[0052] By contracting the inner rod of the tensioning cylinder 41, the bearing seat 42 and the round shaft 43 are driven to move away from the rotating chuck 2, and the round shaft 43 drives the clamp pull rod 44 to move to the right, and the clamp pull rod 44 drives the push block 45 to slide to the right along the guide groove 33; the push block 45 pushes the clamping mechanism to expand outward along the synchronous tube body 3, so that the anti-slip pad in the clamping mechanism firmly presses against the inner side arms of the joint body 7 and the bellows body 71, thereby completing the clamping and fixation of the joint body 7 and the bellows body 71.

[0053] When the clamp pull rod 44 moves to the right, it drives the conical cylinder 65 to move closer to the regular polygonal block 32, and the conical cylinder 65 pushes the multiple extrusion blocks 62 away from each other. The extrusion blocks 62 drive the locking claws 6 to open and rotate outward until the end of the locking claws 6 abuts against the inner wall of the bellows body 71, and the bellows body 71 is clamped and fixed again through the cooperation of the multiple locking claws 6.

[0054] When the tensioning cylinder 41 stops contracting and the locking claws 6 complete the clamping and fixing of the corrugated pipe body 71, the clamping mechanism simultaneously completes the clamping and fixing of the joint body 7 and the corrugated pipe body 71. Through the cooperation of the clamping assembly and the clamping mechanism, the joint body 7 and the corrugated pipe body 71 can be firmly clamped and fixed; and the joint body 7 and the corrugated pipe body 71 are coaxially fixed.

[0055] At this time, through the cooperation of the three-axis linear module 12 and the rotary module 13, the position of the welding head of the welding device 14 is adjusted to align the welding head with the splicing joint of the joint body 7 and the corrugated pipe body 71; Start the welding device 14 for welding. At the same time, the motor shaft of the servo motor drives the driving pulley 25 to rotate. The driving pulley 25 drives the synchronous pulley 23 to rotate through the belt 24. The synchronous pulley 23 drives the synchronous tube body 3 to rotate synchronously through the rotating cylinder 22. The synchronous tube body 3 drives the clamping mechanism and the clamping assembly to rotate synchronously; Through the cooperation of the clamping mechanism and the clamping assembly, the joint body 7 and the corrugated pipe body 71 are driven to rotate synchronously, so that the joint body 7 and the corrugated pipe body 71 can maintain synchronous rotation during rotation, without eccentric vibration or dislocation, and at the same time, the docking joints of the joint body 7 and the corrugated pipe body 71 are accurately aligned, ensuring the welding accuracy.

[0056] Through the synchronous rotation of the joint body 7 and the corrugated pipe body 71, the welding device 14 can perform comprehensive welding on the splicing joint of the joint body 7 and the corrugated pipe body 71.

[0057] After welding is completed, the inner rod of the tensioning cylinder 41 extends outwards, so that the fixture pull rod 44 drives the push block 45 and the conical cylinder 65 to move back to their original positions. The push block 45 drives the clamping mechanism to contract inwards along the synchronous tube body 3. The conical cylinder 65 moves away from the regular polygon block 32, causing the locking claws 6 to move closer and merge, so that the clamping mechanism and the clamping assembly release the clamping and fixing of the joint body 7 and the corrugated pipe body 71.

[0058] Then, the rotary fixture drives the welded joint body 7 and corrugated pipe body 71 to move to the left, so that the welded joint body 7 and corrugated pipe body 71 are moved away from the synchronous tube body 3. At this time, the clamping assembly is further loosened to release the clamping of the welded corrugated pipe body 71, so that the welded joint body 7 and corrugated pipe body 71 can be removed.

[0059] When welding operation needs to be performed again, repeat the above steps. The welding process of the joint body 7 and the corrugated pipe body 71 is simple and convenient, greatly improving the work efficiency and having good welding quality.

[0060] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bellows joint welding device, comprising a welding table (1). A bottom plate (11) is fixedly installed at the upper end of the welding table (1). A three-axis linear module (12) is fixedly installed at the upper end of the bottom plate (11). A rotary module (13) is fixedly installed on the sliding table of the three-axis linear module (12). The rotating end of the rotary module (13) is connected to a welding device (14). It is characterized in that: A rotary chuck (2) is fixedly installed at the upper end of the bottom plate (11). A circular hole (21) is formed through between the left and right sides of the rotary chuck (2). A rotary cylinder (22) is rotatably installed in the circular hole (21). A synchronous pipe body (3) is fixedly installed at one end of the rotary cylinder (22) close to the welding device (14). An annular baffle (31) is fixedly sleeved at one end of the synchronous pipe body (3) close to the rotary cylinder (22). A transmission mechanism is installed in the synchronous pipe body (3). Inner support type clamping mechanisms are symmetrically installed on the side surface of the transmission mechanism on the synchronous pipe body (3). A joint body (7) is sleeved outside the synchronous pipe body (3). One end of the joint body (7) is spliced with a bellows body (71). A rotary fixture for clamping the bellows body (71) is installed at the upper end of the bottom plate (11).

2. The bellows joint welding equipment according to claim 1, characterized in that: A blowing support (15) is fixedly installed at the upper end of the bottom plate (11) below the welding device (14). A blow pipe (16) is installed obliquely downward at the upper end of the blowing support (15). A light blocking plate (17) is fixedly installed at the upper end of the bottom plate (11) on the front side of the blow pipe (16).

3. The bellows joint welding device according to claim 1, characterized in that: A synchronous pulley (23) is fixedly sleeved at one end of the rotary cylinder (22) away from the synchronous pipe body (3). A belt (24) is sleeved outside the synchronous pulley (23). A driving pulley (25) is sleeved at the lower end inside the belt (24). The driving pulley (25) is driven by the motor shaft of a servo motor fixedly installed at the lower end of the rotary chuck (2).

4. A bellows joint welding device according to claim 1, characterized in that: The transmission mechanism includes a cylinder mounting plate (4) fixedly installed at the upper end of the bottom plate (11). A tensioning cylinder (41) is fixedly installed on the cylinder mounting plate (4). A bearing seat (42) is fixedly installed at the end of the inner rod of the tensioning cylinder (41). A round shaft (43) is rotatably installed inside the bearing seat (42). A fixture pull rod (44) is fixedly installed at one end of the round shaft (43) away from the bearing seat (42). The end of the fixture pull rod (44) away from the round shaft (43) sequentially passes through the inner cavities of the rotary cylinder (22) and the synchronous pipe body (3) and extends to the outside. Push blocks (45) are symmetrically and fixedly connected to the side surface of the fixture pull rod (44) in the inner cavity of the synchronous pipe body (3). Sliders (46) are symmetrically and fixedly connected to the side surfaces of the two push blocks (45). Guide grooves (33) are symmetrically formed on the cylindrical surface of the synchronous pipe body (3). Chute grooves (34) are symmetrically formed on the inner side walls of the guide grooves (33). The two push blocks (45) are respectively slidably connected to the adjacent guide grooves (33). The sliders (46) are slidably connected to the chute grooves (34). The two inner support type clamping mechanisms are symmetrically installed in the two guide grooves (33).

5. The bellows joint welding equipment according to claim 4, characterized in that: The clamping mechanism includes a transmission seat (5) arranged on the side of the synchronous tube body (3). Grooves (51) are symmetrically formed at both ends of the transmission seat (5). On the side of the transmission seat (5) away from the synchronous tube body (3), a convex-shaped contraction groove (52) is recessed inward. A convex-shaped plate (54) is slidably installed in the contraction groove (52). An anti-slip pad is fixedly installed on the convex-shaped plate (54). A plurality of elastic sheets (55) are equidistantly installed between the convex-shaped plate (54) and the bottom of the inner cavity of the contraction groove (52). In the grooves (51) at both ends of the transmission seat (5), movable arms (56) are rotatably installed through rotating shafts. One end of a movable arm (56) away from the chute (34) is rotatably connected to the guide groove (33) through a rotating shaft, and one end of the other movable arm (56) close to the chute (34) is rotatably connected to the push block (45) through a hinge.

6. The bellows joint welding device according to claim 5, characterized in that: A reinforcing block (53) is fixedly installed on the side of the transmission seat (5) close to the guide groove (33). The movable arm (56) and the reinforcing block (53) are both in sliding contact with the guide groove (33). Both sides of the elastic sheet (55) are in abutment with the convex-shaped plate (54) and the bottom of the inner cavity of the contraction groove (52) respectively.

7. The bellows joint welding device according to claim 4, characterized in that: At one end of the synchronous tube body (3) away from the rotating cylinder (22), an inner-supporting clamping assembly is installed. The clamping assembly includes a regular polygon block (32) fixedly installed at one end of the synchronous tube body (3) away from the rotating cylinder (22). A through hole is formed through the side of the regular polygon block (32). One end of a jig pull rod (44) penetrates through the through hole and extends to the outside. A conical cylinder (65) is fixedly sleeved at the end of the jig pull rod (44) outside the through hole. A plurality of rotating grooves (35) are formed in an annular array on the side of the regular polygon block (32) away from the synchronous tube body (3). In each rotating groove (35), a locking claw (6) is rotatably installed through a rotating shaft. An arc-shaped hole (61) is formed through the side of the locking claw (6). The plurality of locking claws (6) are distributed in an annular array outside the conical cylinder (65). A pressing block (62) is fixedly connected to the side of the locking claw (6) close to the conical cylinder (65). The pressing block (62) is in pressing contact with the inclined side of the conical cylinder (65). An arc-shaped rod (63) is fixedly installed in the rotating groove (35). One end of the arc-shaped rod (63) is slidably inserted into the arc-shaped hole (61). A return spring (64) is sleeved on the arc-shaped rod (63). Both ends of the return spring (64) are in abutment with the side wall of the rotating groove (35) and the side of the locking claw (6) respectively.

8. A bellows joint welding device according to claim 1, characterized in that: The rotating fixture includes a support plate (72) fixedly installed at the upper end of the bottom plate (11). A reciprocating groove (73) is recessed downward at the upper end of the support plate (72). A lead screw (74) is rotatably installed in the reciprocating groove (73). The lead screw (74) is driven by the output shaft of a stepper motor fixedly installed on the side of the support plate (72). A threaded sleeve (75) is sleeved on the lead screw (74). The threaded sleeve (75) is slidably connected to the left and right of the reciprocating groove (73). A moving plate (76) is fixedly installed at the upper end of the threaded sleeve (75). T-shaped guide rails (77) are symmetrically and fixedly installed at the left and right of the upper end of the moving plate (76). The lower end of the moving plate (76) is in sliding contact with the upper end of the support plate (72) from left to right. Clamping components are installed symmetrically at the front and back of the upper end of the moving plate (76).

9. The bellows joint welding device according to claim 8, characterized in that: The clamping components include a concave base (8) slidably installed at the front and back of the upper end of the moving plate (76). T-shaped grooves are symmetrically opened at the left and right of the lower end of the concave base (8). The T-shaped grooves are slidably connected to the T-shaped guide rails (77) from front to back. Clamping cylinders (81) are symmetrically and fixedly installed on the sides of the concave base (8). The clamping cylinders (81) are fixedly installed at the upper end of the moving plate (76). Concave frames (82) are symmetrically and fixedly installed at the left and right of the upper end of the concave base (8). Clamping rollers (83) are rotatably installed symmetrically at the upper and lower sides of the sides of the concave frames (82) through bearings. The clamping rollers (83) are in rolling contact with the corrugated pipe body (71).

10. A corrugated pipe joint welding device according to claim 8, characterized in that: A bearing component is fixedly installed between the two clamping components at the upper end of the moving plate (76). The bearing component includes a lifting cylinder (9) fixedly installed at the upper end of the moving plate (76). A concave seat (91) is fixedly installed at the upper end of the inner rod of the lifting cylinder (9).

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