A bellows joint welding apparatus

Abstract

The application discloses a kind of corrugated pipe joint welding equipment, and is related to the technical field of welding equipment, specifically a kind of corrugated pipe joint welding equipment, including welding table, the upper end of welding table is fixedly installed with bottom plate, the upper end of bottom plate is fixedly installed with three-axis linear module, the slide platform of three-axis linear module is fixedly installed with rotary module, and the rotary end of rotary module is connected with welding device;The upper end of bottom plate is fixedly installed with rotary chuck, and circular hole is penetrated between the left and right sides of rotary chuck, rotary cylinder is rotatably installed in circular hole, and the end of rotary cylinder close to welding device is fixedly installed with synchronous pipe body, the beneficial effects of the present application are: the joint body is sleeved on the synchronous pipe body, the end of the joint body in contact with the annular baffle is sleeved on the annular rubber ring, the joint body is supported by the annular rubber ring, so that the preliminary positioning of the joint body is completed;Two clamping components are used to clamp and fix the corrugated pipe body.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a bellows joint welding device. Background Art

[0002] Commonly used corrugated pipes are mainly divided into metal and non-metallic corrugated pipes. The corrugated pipe is composed of a pipe body and joints at both ends of the pipe body. During the production process of the corrugated pipe, the pipe body and the joints of the corrugated pipe need to be connected and assembled. In the existing technology, the pipe body and the joints of the corrugated pipe are mostly fixed by welding, especially when connecting the metal corrugated pipe and the metal joint, welding equipment is mostly used for welding and assembly.

[0003] The existing method of assembling bellows and joints is to first fix the bellows and joints by a clamping device, then align and splice the bellows and joints, and then drive the bellows and joints to rotate by a rotating device, so that the joints of the bellows and joints can be fully welded; however, there are certain defects in the welding process: during the welding process, it is impossible to ensure that the pipe body and the joint remain coaxially fixed, and the pipe body and the joint will produce eccentric vibrations during rotation, or the pipe body and the joint cannot maintain synchronous rotation, resulting in misalignment between the pipe body and the joint, making it impossible to accurately align the pipe body and the joint, resulting in uneven or misaligned welds between the pipe body and the joint, affecting the welding accuracy. Summary of the Invention

[0004] The object of the present invention is to provide a bellows joint welding device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a bellows joint welding device, comprising a welding table, a base plate fixedly mounted on the upper end of the welding table, a three-axis linear module fixedly mounted on the upper end of the base plate, a rotary module fixedly mounted on the sliding table of the three-axis linear module, and a rotary end of the rotary module connected to a welding device;

[0006] A rotating chuck is fixedly installed on the upper end of the base plate, and a circular hole is opened between the left and right sides of the rotating chuck, and a rotating cylinder is rotatably installed in the circular hole, and a synchronous pipe body is fixedly installed on the end of the rotating cylinder close to the welding device, and an annular baffle is fixedly sleeved on the end of the synchronous pipe body close to the rotating cylinder, and a transmission mechanism is installed in the synchronous pipe body, and an internal support type clamping mechanism is symmetrically installed on the side of the transmission mechanism on the synchronous pipe body, and a joint body is sleeved on the outer side of the synchronous pipe body, and a bellows body is spliced ​​on one end of the joint body. A rotating clamp for clamping the bellows body is installed on the upper end of the base plate.

[0007] Preferably, the upper end of the bottom plate is fixedly installed with a blowing support below the welding device, the upper end of the blowing support is obliquely installed with a blowing pipe downward, and the upper end of the bottom plate is fixedly installed with a light shield plate on the front side of the blowing pipe.

[0008] Preferably, the rotating cylinder is fixedly sleeved with a synchronous pulley at one end away from the synchronous pipe body, the outer side of the synchronous pulley is sleeved with a belt, the inner side of the belt is sleeved with a driving pulley at the lower end, and the driving pulley is driven by the motor shaft of the servo motor fixedly installed at the lower end of the rotating chuck.

[0009] Preferably, the transmission mechanism comprises a cylinder mounting plate fixedly installed at the upper end of the bottom plate, a tension cylinder fixedly installed on the cylinder mounting plate, a bearing seat fixedly installed at the end of the inner rod of the tension cylinder, a circular shaft rotatably installed at the inner side of the bearing seat, a clamp pull rod fixedly installed at one end of the circular shaft away from the bearing seat, and the clamp pull rod extends to the outside through the inner cavities of the rotating cylinder and the synchronous pipe body in sequence;

[0010] The clamp pull rod is fixedly connected with a push block on the side of the inner cavity of the synchronous pipe body, and the side of each push block is fixedly connected with a sliding block.

[0011] The cylindrical surface of the synchronous pipe body is symmetrically provided with a guide groove, the inner side wall of the guide groove is symmetrically provided with a sliding groove, the two push blocks are respectively in sliding connection with the adjacent guide grooves, the sliding blocks are in sliding connection with the sliding grooves, and the two inner support type clamping mechanisms are symmetrically installed in the two guide grooves.

[0012] Preferably, the clamping mechanism comprises a transmission seat arranged on the side of the synchronous pipe body, recesses are symmetrically arranged at the two 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, a non-slip pad is fixedly installed on the convex plate, a plurality of elastic sheets are equidistantly installed between the convex plate and the bottom of the inner cavity of the contraction groove, and movable arms are rotatably installed in the recesses at the two ends of the transmission seat through rotating shafts, one end of the movable arm away from the sliding groove is rotatably connected with the guide groove through a rotating shaft, and the other movable arm close to the sliding groove is rotatably connected with the push block through a hinge.

[0013] Preferably, a reinforcing block is fixedly installed on the side of the transmission seat close to the guide groove, the movable arms and the reinforcing block are in sliding contact with the guide groove, and the two sides of the elastic sheets are respectively in abutment with the convex plate and the bottom of the inner cavity of the contraction groove.

[0014] Preferably, the synchronous pipe body is installed with an inner support type clamping assembly at one end away from the rotating cylinder.

[0015] The clamping assembly comprises a regular polygon block fixedly installed at one end of the synchronous pipe body away from the rotating cylinder, a through hole is formed through the side surface of the regular polygon block, one end of a clamp pull rod extends to the outside through the through hole, 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 the side of the regular polygon block away from the synchronous pipe body in an annular array, 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 on the outside of the conical cylinder in an annular array, an extrusion block is fixedly connected to the side of the locking claw close to the conical cylinder, and the extrusion block is in extrusion contact with the inclined side surface of the conical cylinder.

[0016] An arc-shaped rod is fixedly installed in the rotating groove, one end of the arc-shaped rod is slidingly inserted into the arc-shaped hole, a return spring is sleeved on the arc-shaped rod, and the two ends of the return spring are in abutment with the side wall of the rotating groove and the side surface of the locking claw respectively.

[0017] Preferably, the rotating clamp comprises a support plate fixedly installed at the upper end of the bottom plate, a reciprocating groove is formed in the upper end of the support plate downwards, 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 at the side surface of the support plate, a threaded sleeve is sleeved on the lead screw, the threaded sleeve is slidingly connected with the reciprocating groove left and right, a moving plate is fixedly installed at the upper end of the threaded sleeve, T-shaped guide rails are fixedly installed at the upper end of the moving plate left and right in symmetry, the lower end of the moving plate is in sliding contact with the upper end of the support plate left and right, and clamping assemblies are installed on the upper end of the moving plate front and back in symmetry.

[0018] Preferably, the clamping assembly comprises a concave base slidingly installed front and back on the upper end of the moving plate, T-shaped grooves are formed in the lower end of the concave base left and right in symmetry, the T-shaped grooves are slidingly connected with the T-shaped guide rails front and back, clamping cylinders are fixedly installed at the upper end of the moving plate left and right in symmetry on the side surface of the concave base, concave frames are fixedly installed at the upper end of the concave base left and right in symmetry, clamping rollers are rotatably installed on the side surface of the concave frame up and down in symmetry through bearings, and the clamping rollers are in rolling contact with the bellows body.

[0019] Preferably, a bearing assembly is fixedly installed at the upper end of the moving plate between the two clamping assemblies, the bearing assembly comprises a lifting cylinder fixedly installed at the upper end of the moving plate, and a concave seat is fixedly installed at the upper end of the rod in the lifting cylinder.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1、The joint body is sleeved on the synchronous pipe body, the end of the joint body in contact with the annular baffle is sleeved on the annular rubber ring, the joint body is supported through the annular rubber ring, thereby completing the preliminary positioning of the joint body; the corrugated pipe body is clamped and fixed through cooperation of the two clamping assemblies, the corrugated pipe body is slowly sleeved on the synchronous pipe body through the rotating clamp, until the end of the corrugated pipe body is in contact with the synchronous pipe body, thereby completing the splicing of the corrugated pipe body and the joint body.

[0022] 2、The push block and the conical cylinder are driven to move rightwards through the transmission mechanism, the clamping mechanism is expanded outward along the synchronous pipe body, the anti-skid pads in the clamping mechanism are firmly abutted against the inner side arms of the joint body and the corrugated pipe body, thereby completing the clamping and fixing of the joint body and the corrugated pipe body; meanwhile, the plurality of locking claws in the clamping assembly are pushed outward and rotated through the conical cylinder, the corrugated pipe body is clamped and fixed again through cooperation of the plurality of locking claws, the clamping and fixing of the joint body and the corrugated pipe body is completed firmly through cooperation of the clamping assembly and the clamping mechanism, and coaxial fixing between the joint body and the corrugated pipe body is maintained.

[0023] 3、The welding device is started to weld, the driving pulley is rotated through the motor shaft of the servo motor, the synchronous pulley is rotated through the belt driven by the driving pulley, the synchronous pipe body is synchronously rotated through the rotating cylinder driven by the synchronous pulley, the clamping mechanism and the clamping assembly are synchronously rotated through the synchronous pipe body; the joint body and the corrugated pipe body are synchronously rotated through cooperation of the clamping mechanism and the clamping assembly, so that the joint body and the corrugated pipe body can be synchronously rotated without eccentric vibration and misalignment, and the jointing part of the joint body and the corrugated pipe body is accurately aligned, thereby ensuring the welding precision. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure perspective view of the corrugated pipe joint welding equipment of the application;

[0025] Figure 2 It is a local structure perspective view of the corrugated pipe joint welding equipment of the application;

[0026] Figure 3 It is a local structure sectional view of the corrugated pipe joint welding equipment of the application;

[0027] Figure 4 It is Figure 3 It is an enlarged schematic view of structure A;

[0028] Figure 5 It is a structure sectional view of the corrugated pipe body, the synchronous pipe body, the clamping mechanism and the clamping assembly of the application;

[0029] Figure 6 It is Figure 5 It is an enlarged schematic view of structure B;

[0030] Figure 7 The figure is an exploded view of the bellows body, the synchronous pipe body, the clamping mechanism and the clamping assembly structure of the application.

[0031] In the figure: 1, welding table; 11, bottom plate; 12, three-axis linear module; 13, rotating module; 14, welding device; 15, air blowing support; 16, air blowing pipe; 17, light barrier; 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, sliding groove; 35, rotating groove; 4, air cylinder mounting plate; 41, tension air cylinder; 42, bearing seat; 43, round shaft; 44, clamp pull rod; 45, push block; 46, sliding block; 5, transmission seat; 51, recess; 52, contraction groove; 53, reinforcing block; 54, convex plate; 55, spring piece; 56, movable arm; 6, locking claw; 61, arc-shaped hole; 62, extrusion block; 63, arc-shaped 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 air cylinder; 82, concave frame; 83, clamping roller; 9, lifting air cylinder; 91, concave seat. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0033] Please refer to Figures 1 to 7 The application provides a technical solution: a bellows joint welding device, comprising a welding table 1, the upper end of the welding table 1 is fixedly installed with a bottom plate 11, the upper end of the bottom plate 11 is fixedly installed with a three-axis linear module 12, the slide table of the three-axis linear module 12 is fixedly installed with a rotating module 13, the rotating end of the rotating module 13 is connected with a welding device 14, the rotating module 13 can be provided as a rotating motor, the rotating motor is fixedly installed on the slide table, the connecting shaft of the rotating motor is connected with the welding device 14, the welding head of the welding device 14 is distributed obliquely downward, the upper end of the welding table 1 is fixedly installed with a controller, the running and stopping of the welding device are controlled through the controller.

[0034] A rotating chuck 2 is fixedly installed on the upper end of the base plate 11, and a circular hole 21 is opened between the left and right sides of the rotating chuck 2. A rotating cylinder 22 is rotatably installed in the circular hole 21, and a synchronous tube body 3 is fixedly installed on the end of the rotating cylinder 22 close to the welding device 14. An annular baffle 31 is fixedly sleeved on the end of the synchronous tube body 3 close to the rotating cylinder 22. A transmission mechanism is installed in the synchronous tube body 3, and an internal support clamping mechanism is symmetrically installed on the side of the transmission mechanism on the synchronous tube body 3. The outer side of the synchronous tube body 3 is sleeved with a joint body 7, and a bellows body 71 is spliced ​​on one end of the joint body 7. A rotating clamp for clamping the bellows body 71 is installed on the upper end of the base plate 11.

[0035] When the joint body 7 is sleeved on the synchronization pipe body 3, one end of the joint body 7 contacts 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 contacts the annular baffle 31, 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.

[0036] A blow bracket 15 is fixedly installed on the upper end of the base plate 11 below the welding device 14, and a blow pipe 16 is installed on the upper end of the blow bracket 15 at a downward angle. A light shielding plate 17 is fixedly installed on the upper end of the base plate 11 in front of the blow pipe 16. The light shielding plate 17 is used to block the flash and blown gas lamp that appear during welding. The air outlet end of the blow pipe 16 and the welding head of the welding device 14 are both facing the weld seam, which is the butt joint between the joint body 7 and the bellows body 71.

[0037] The air blowing pipe 16 can be used to clean the joint between the joint body 7 and the bellows body 71, and the welding seam can also be cooled in time.

[0038] See also Figure 2 and Figure 3 A synchronous pulley 23 is fixedly connected to the end of the rotating cylinder 22 away from the synchronous tube body 3, a belt 24 is connected to the outer side of the synchronous pulley 23, and a driving pulley 25 is connected to the lower end of the inner side of the belt 24. The driving pulley 25 is driven by the motor shaft of the servo motor fixedly installed at the lower end of the rotating chuck 2.

[0039] The servo motor is fixedly mounted on the lower end of the rotary chuck 2, and the motor shaft is fixedly connected to the drive pulley 25 via a flange, a coupling, etc.

[0040] 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, and the synchronous pulley 23 drives the synchronous tube body 3 to rotate synchronously through the rotating cylinder 22.

[0041] See also Figures 3 to 7 The transmission mechanism includes a cylinder mounting plate 4 fixedly mounted on the upper end of the base plate 11, a tensioning cylinder 41 fixedly mounted on the cylinder mounting plate 4, a bearing seat 42 fixedly mounted on the end of the inner rod of the tensioning cylinder 41, a round shaft 43 rotatably mounted on the inner side of the bearing seat 42, a clamp rod 44 fixedly mounted on the end of the round shaft 43 away from the bearing seat 42, and the end of the clamp rod 44 away from the round shaft 43 sequentially penetrates the inner cavity of the rotating cylinder 22 and the synchronous tube body 3 and extends to the outside;

[0042] The clamp pull rod 44 is symmetrically fixedly connected to the side of the inner cavity of the synchronization tube body 3 with a push block 45, and the sides of the two push blocks 45 are symmetrically fixedly connected to the slider 46;

[0043] The cylindrical surface of the synchronization tube body 3 is symmetrically provided with a guide groove 33, and the inner side wall of the guide groove 33 is symmetrically provided with a slide groove 34. The two push blocks 45 are respectively slidably connected to the adjacent guide grooves 33, and the slider 46 is slidably connected to the slide groove 34. The two internal support clamping mechanisms are symmetrically installed in the two guide grooves 33.

[0044] The inner rod of the tensioning cylinder 41 contracts, driving the bearing seat 42 and the circular shaft 43 to move away from the rotary chuck 2, and the circular shaft 43 drives the clamp rod 44 to move synchronously. At this time, the clamp rod 44 drives the push block 45 to slide along the guide groove 33, and the push block 45 drives the slider 46 to slide along the slide groove 34, so that the push block 45 can slide stably along the guide groove 33;

[0045] At this time, the push block 45 moves close to the rotary chuck 2, and at the same time, the push block 45 pushes the clamping mechanism, causing the clamping mechanism to expand outward along the synchronous tube body 3, against the inner 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.

[0046] By extending the inner rod of the tensioning cylinder 41 outward, the bearing seat 42 and the round shaft 43 move closer to the rotary chuck 2, so that the clamp pull rod 44 drives the push block 45 to move back and reset, and the push block 45 drives the clamping mechanism to retract inward along the synchronous pipe body 3, so that the clamping mechanism releases the clamping fixation of the joint body 7 and the bellows body 71.

[0047] See also Figures 5 to 7The clamping mechanism includes a transmission seat 5 arranged on the side of the synchronous tube body 3, and grooves 51 are symmetrically provided at both ends of the transmission seat 5. The side of the transmission seat 5 away from the synchronous tube body 3 is recessed inward and provided with a convex contraction groove 52. A convex plate 54 is slidably installed in the contraction groove 52, and an anti-slip pad is fixedly installed on the convex plate 54. A plurality of spring pieces 55 are equidistantly installed between the convex plate 54 and the bottom of the inner cavity of the contraction groove 52. A movable arm 56 is rotatably installed in the grooves 51 at both ends of the transmission seat 5 through a rotating shaft. The two movable arms 56 are distributed in an eight-shaped shape, wherein one end of the movable arm 56 away from the slide groove 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 slide groove 34 is rotatably connected to the push block 45 through a hinge.

[0048] A reinforcement block 53 is fixedly installed on one side of the transmission seat 5 close to the guide groove 33. The movable arm 56 and the reinforcement block 53 are in sliding contact with the guide groove 33. The two sides of the spring piece 55 are respectively in contact with the convex plate 54 and the bottom of the inner cavity of the contraction groove 52, and the spring piece 55 applies elastic force to the convex plate 54.

[0049] When the push block 45 moves closer to the rotary chuck 2, the push block 45 pushes its adjacent movable arm 56 to rotate through the hinge, so that the end of the movable arm 56 away from the push block 45 rotates away from the synchronous tube body 3. At this time, the movable arm 56 drives the transmission base 5 to expand outward, and the transmission base 5 drives the movable arm 56 at the other end to rotate synchronously, so that the two movable arms 56 move closer to each other. At the same time, the two movable arms 56 drive the transmission base 5 to expand outward. At this time, the transmission base 5 moves closer to the rotary chuck 2 while expanding outward.

[0050] The transmission seat 5 drives the convex plate 54 to move synchronously, so that the convex plate 54 expands outward and moves closer to the rotating chuck 2. When the anti-skid pad on the convex plate 54 contacts the inner wall of the joint body 7 and the bellows body 71, the transmission seat 5 drives the convex plate 54 to continue to expand outward and move closer to the rotating chuck 2 for a distance, so that the transmission seat 5 is slowly sleeved on the convex plate 54. At the same time, the anti-skid pad and the convex plate 54 are prevented from continuing to expand outward, but the anti-skid pad and the convex plate 54 can continue to move a distance toward the rotating chuck 2. At this time, the anti-skid pad gives a thrust to the inner wall of the bellows body 71, further aligning and splicing the bellows body 71 and the joint body 7.

[0051] At the same time, the convex plate 54 squeezes the spring piece 55, and under the action of the elastic force of the spring piece 55, the convex plate 54 drives the anti-slip pad to abut against the inner walls of the connector body 7 and the bellows body 71 respectively, thereby completing the clamping and fixing of the connector body 7 and the bellows body 71.

[0052] On the contrary, when the push 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 base 5 to move back, and the transmission base 5 drives the convex plate 54 and the anti-slip pad to separate from the inner wall of the joint body 7 and the bellows body 71 until the push block 45, the movable arms 56, the transmission base 5, the convex plate 54 and the anti-slip pad are restored to their original position.

[0053] Initial state,

[0054] The push block 45 is at the end of the chute 34 away from the transmission seat 5. At this time, the end of the chute 34 close to the transmission seat 5 can also be defined as the right end, and the other end of the chute 34 is defined as the left end. At this time, it can be said that the push block 45 is at the left end of the chute 34. At this time, the two movable arms 56 are opened to their maximum state, but the two movable arms 56 are never parallel. At this time, the transmission seat 5 is retracted into the guide groove 33, and one end of the reinforcement block 53 extends into the inner cavity of the synchronization tube body 3. At this time, the joint body 7 can be normally sleeved on the synchronization tube body 3, and the convex plate 54 and the anti-slip pad will not cause any obstruction.

[0055] During the outward expansion of the clamping mechanism, the reinforcing block 53 is always located in the guide groove 33 .

[0056] By rotating the synchronous tube body 3, the push block 45, the reinforcing block 53, and the movable arm 56 are driven to rotate synchronously, thereby causing the clamping mechanism to rotate synchronously. Since the clamping mechanism forms a tight abutment with the inner walls of the joint body 7 and the bellows body 71 and remains relatively fixed, the rotation of the clamping mechanism will drive the joint body 7 and the bellows body 71 to rotate synchronously.

[0057] The joint body 7 and the bellows body 71 are clamped and fixed at the same time by the provided clamping mechanism, and both the joint body 7 and the bellows body 71 are driven to rotate by the clamping mechanism, so that the joint body 7 and the bellows body 71 remain coaxially fixed. During rotation, the joint body 7 and the bellows body 71 can maintain synchronous rotation without eccentric vibration or misalignment, so that the joints of the joint body 7 and the bellows body 71 are precisely aligned, ensuring welding accuracy.

[0058] When the push block 45 rotates, the clamp rod 44 is driven to rotate synchronously, and the clamp rod 44 drives the circular shaft 43 to rotate along the bearing seat 42, so that the clamp rod 44 can rotate simultaneously without causing any obstruction.

[0059] See also Figure 4 、 Figure 5 and Figure 7 , an internal support type clamping assembly is installed at one end of the synchronization tube body 3 away from the rotating cylinder 22;

[0060] The clamping assembly includes a regular polygonal block 32 fixedly mounted on the end of the synchronous tube body 3 away from the rotating cylinder 22, a through hole is formed on the side of the regular polygonal block 32, one end of the clamp pull rod 44 passes through the through hole and extends to the outside, and the end of the clamp pull rod 44 outside the through hole is fixedly sleeved with a conical cylinder 65, and the end with a smaller diameter of the conical cylinder 65 is close to the regular polygonal block 32, and a plurality of rotating grooves 35 are formed in an annular array on the side of the regular polygonal block 32 away from the synchronous tube body 3, and a locking claw 6 is installed in each rotating groove 35 by rotating through a rotating shaft, and an arc hole 61 is formed on the side of the locking claw 6, and a plurality of locking claws 6 are distributed in an annular array on the outside of the conical cylinder 65, and a squeezing block 62 is fixedly connected to the side of the locking claw 6 close to the conical cylinder 65, and the squeezing block 62 is in squeezing contact with the oblique side surface of the conical cylinder 65;

[0061] An arc-shaped rod 63 is fixedly installed in the rotating groove 35, one end of the arc-shaped rod 63 is slidably inserted in the arc-shaped hole 61, and a return spring 64 is sleeved on the arc-shaped rod 63. The two ends of the return spring 64 are respectively in contact with the side wall of the rotating groove 35 and the side of the locking claw 6, and the return spring 64 applies elastic force to the locking claw 6.

[0062] 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.

[0063] 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 closer to the regular polygon block 32. At the same time, the conical cylinder 65 pushes the multiple extrusion blocks 62 away from each other. The extrusion blocks 62 drive the locking claw 6 to open and rotate outward. The locking claw 6 slides along the arc rod 63. At the same time, the locking claw 6 squeezes the return spring 64 until the end of the locking claw 6 abuts against the inner wall of the bellows body 71. The bellows body 71 is clamped and fixed again through the cooperation of multiple locking claws 6.

[0064] At this time, the tensioning cylinder 41 stops contracting, and when the locking claw 6 completes the clamping and fixing of the bellows body 71, the clamping mechanism simultaneously completes the clamping and fixing of the joint body 7 and the bellows body 71. Through the cooperation of the set clamping assembly and the clamping mechanism, the joint body 7 and the bellows body 71 can be firmly clamped and fixed, and 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 bellows body 71 can rotate synchronously, avoiding the situation where the joint body 7 and the bellows body 71 are misaligned.

[0065] The diameter of the circumscribed circle of the regular polygonal block 32 is smaller than the minimum inner diameter of the joint body 7 and the bellows body 71, and after the locking claw 6 shrinks and merges, the locking claw 6 and the regular polygonal block 32 will not hinder the joint body 7 and the bellows body 71 from being sleeved on the synchronization pipe body 3.

[0066] See also Figures 1 to 3 The rotating fixture includes a support plate 72 fixedly mounted on the upper end of the base plate 11. The upper end of the support plate 72 is recessed downward to form a reciprocating groove 73. A screw rod 74 is rotatably mounted in the reciprocating groove 73. The screw rod 74 is driven by the output shaft of a stepper motor fixedly mounted on the side of the support plate 72. The stepper motor is fixedly mounted on the side of the support plate 72. Rotating shafts are symmetrically protruded at both ends of the screw rod 74. The screw rod 74 is rotatably connected to the support plate 72 through the rotating shaft. The output shaft and the rotating shaft are connected by a flange or a coupling.

[0067] A threaded sleeve 75 is sleeved on the screw rod 74, and the threaded sleeve 75 is connected to the reciprocating groove 73 for left and right sliding. A movable plate 76 is fixedly installed on the upper end of the threaded sleeve 75, and a T-shaped guide rail 77 is fixedly installed on the upper end of the movable plate 76 symmetrically. The lower end of the movable plate 76 is in left and right sliding contact with the upper end of the support plate 72, and a clamping assembly is symmetrically installed on the upper end of the movable plate 76.

[0068] The clamping assembly includes a concave base 8 mounted on the upper end of the movable plate 76 for sliding back and forth. A T-slot is symmetrically provided at the lower end of the concave base 8. The T-slot is connected to the T-guide rail 77 for sliding back and forth. A clamping cylinder 81 is fixedly mounted on the side of the concave base 8 for symmetrical left and right. The clamping cylinder 81 is fixedly mounted on the upper end of the movable plate 76. The end of the inner rod of the clamping cylinder 81 is fixedly connected to the side of the concave base 8. A concave frame 82 is fixedly mounted on the upper end of the concave base 8 for symmetrical left and right. A clamping roller 83 is symmetrically mounted on the side of the concave frame 82 for rotation through a bearing. The clamping roller 83 is in rolling contact with the bellows body 71.

[0069] By using servo pneumatic valves and closed-loop feedback, multiple clamping cylinders 81 can be extended and retracted synchronously. One clamping cylinder 81 is designated as the master cylinder, and the other slave cylinders follow its movement. Errors are eliminated through PID algorithm.

[0070] Each clamping cylinder 81 is independently equipped with a servo valve, which uses a displacement sensor such as a magnetic scale to provide real-time feedback on the extension and retraction position of the inner rod of the clamping cylinder 81. The PLC and PID controller dynamically adjust the opening of each valve, so that multiple clamping cylinders 81 can maintain synchronous extension and retraction.

[0071] A bearing assembly is fixedly mounted on the upper end of the movable plate 76 between the two clamping assemblies. The bearing assembly includes a lifting cylinder 9 fixedly mounted on the upper end of the movable plate 76 , and a concave seat 91 is fixedly mounted on the upper end of the inner rod of the lifting cylinder 9 .

[0072] The concave seat 91 is used to place the bellows body 71, support and limit the bellows body 71, and then clamp and position the bellows body 71 through the cooperation of two clamping components.

[0073] 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, the concave frame 82 moves 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.

[0074] 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 on it to move to the right 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 on it to move to the right synchronously, and drives the bellows body 71 to slowly be connected to 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.

[0075] Working principle: During operation, the joint body 7 is sleeved on the synchronization pipe body 3, so that one end of the joint body 7 contacts the annular baffle 31, and at the same time, the end of the joint body 7 that contacts 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.

[0076] 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.

[0077] By contracting the inner rod of the tensioning cylinder 41, the bearing seat 42 and the circular shaft 43 are driven to move away from the rotary chuck 2, and the circular 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 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.

[0078] As 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 multiple locking claws 6.

[0079] When the tensioning cylinder 41 stops contracting, the locking claw 6 completes the clamping and fixing of the bellows body 71, and the clamping mechanism simultaneously completes the clamping and fixing of the joint body 7 and the bellows body 71. Through the cooperation of the set clamping assembly and the clamping mechanism, the joint body 7 and the bellows body 71 can be firmly clamped and fixed; and the joint body 7 and the bellows body 71 can be kept coaxially fixed.

[0080] At this time, the position of the welding head of the welding device 14 is adjusted by the cooperation of the three-axis linear module 12 and the rotary module 13 so that the welding head is aligned with the joint of the joint body 7 and the bellows body 71;

[0081] The welding device 14 is started to weld, and at the same time, the drive pulley 25 is driven to rotate by the motor shaft of the servo motor, and the drive pulley 25 drives the synchronous pulley 23 to rotate through the belt 24, and the synchronous pulley 23 drives the synchronous tube body 3 to rotate synchronously through the rotating cylinder 22, and the synchronous tube body 3 drives the clamping mechanism and the clamping assembly to rotate synchronously;

[0082] The clamping mechanism and clamping assembly are arranged to drive the joint body 7 and the bellows body 71 to rotate synchronously, so that the joint body 7 and the bellows body 71 can maintain synchronous rotation during rotation, and no eccentric vibration or misalignment occurs. At the same time, the joints of the joint body 7 and the bellows body 71 are precisely aligned to ensure welding accuracy.

[0083] By the synchronous rotation of the joint body 7 and the bellows body 71 , the welding device 14 can fully weld the joint between the joint body 7 and the bellows body 71 .

[0084] After welding is completed, the inner rod of the tensioning cylinder 41 is extended outward, so that the clamp pull rod 44 drives the push block 45 and the tapered tube 65 to move back and reset, and the push block 45 drives the clamping mechanism to shrink inward along the synchronous tube body 3, and the tapered tube 65 moves away from the regular polygonal block 32, so that the locking claws 6 approach each other and merge, so that the clamping mechanism and the clamping assembly release the clamping fixation of the joint body 7 and the bellows body 71.

[0085] The welded joint body 7 and the corrugated pipe body 71 are moved to the left by rotating the clamp, and the welded joint body 7 and the corrugated pipe body 71 are moved away from the synchronous pipe body 3. At this time, the clamping assembly is loosened to release the clamping of the welded corrugated pipe body 71, so that the welded joint body 7 and the corrugated pipe body 71 can be removed.

[0086] When the welding operation needs to be performed again, the above steps are repeated. The welding process of the joint body 7 and the corrugated pipe body 71 is simple and convenient, greatly improving the work efficiency, and the welding quality is good.

[0087] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bellows joint welding device, comprising a welding table (1), wherein a base plate (11) is fixedly mounted on the upper end of the welding table (1), a three-axis linear module (12) is fixedly mounted on the upper end of the base plate (11), a rotary module (13) is fixedly mounted on the sliding table of the three-axis linear module (12), and a rotary end of the rotary module (13) is connected to a welding device (14); Its characteristics are: A rotating chuck (2) is fixedly mounted on the upper end of the base plate (11), a circular hole (21) is formed between the left and right sides of the rotating chuck (2), a rotating cylinder (22) is rotatably mounted in the circular hole (21), a synchronous tube body (3) is fixedly mounted on one end of the rotating cylinder (22) close to the welding device (14), an annular baffle (31) is fixedly sleeved on one end of the synchronous tube body (3) close to the rotating cylinder (22), a transmission mechanism is mounted in the synchronous tube body (3), an inner support type clamping mechanism is symmetrically mounted on the side of the transmission mechanism on the synchronous tube body (3), a joint body (7) is sleeved on the outer side of the synchronous tube body (3), a bellows body (71) is spliced ​​on one end of the joint body (7), and a rotating fixture for clamping the bellows body (71) is mounted on the upper end of the base plate (11); The transmission mechanism includes a cylinder mounting plate (4) fixedly mounted on the upper end of the base plate (11), a tensioning cylinder (41) fixedly mounted on the cylinder mounting plate (4), a bearing seat (42) fixedly mounted on the end of the inner rod of the tensioning cylinder (41), a circular shaft (43) rotatably mounted on the inner side of the bearing seat (42), a clamp rod (44) fixedly mounted on the end of the circular shaft (43) away from the bearing seat (42), and an end of the clamp rod (44) away from the circular shaft (43) sequentially passes through the inner cavity of the rotating cylinder (22) and the synchronous tube body (3) and extends to the outside; The clamp pull rod (44) is symmetrically fixedly connected to a push block (45) on the side of the inner cavity of the synchronization tube body (3), and the sides of the two push blocks (45) are symmetrically fixedly connected to a slider (46); The cylindrical surface of the synchronization tube body (3) is symmetrically provided with a guide groove (33), the inner side wall of the guide groove (33) is symmetrically provided with a slide groove (34), two push blocks (45) are respectively slidably connected to adjacent guide grooves (33), the slider (46) is slidably connected to the slide groove (34), and two internal support clamping mechanisms are symmetrically installed in the two guide grooves (33); The clamping mechanism includes a transmission seat (5) arranged on the side of the synchronous tube body (3), and grooves (51) are symmetrically opened at both ends of the transmission seat (5). A convex shrinkage groove (52) is opened inward on the side of the transmission seat (5) away from the synchronous tube body (3), and a convex plate (54) is slidably installed in the shrinkage groove (52). An anti-skid pad is fixedly installed on the upper end of the convex plate (54), and a plurality of spring pieces (55) are equidistantly installed between the convex plate (54) and the bottom of the inner cavity of the shrinkage groove (52). A movable arm (56) is rotatably installed in the grooves (51) at both ends of the transmission seat (5) through a rotating shaft, wherein one end of the movable arm (56) away from the slide groove (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 slide groove (34) is rotatably connected to the push block (45) through a hinge, and the anti-skid pad is used to abut against the inner wall of the joint body (7) and the bellows body (71).

2. The bellows joint welding device according to claim 1, characterized in that: An air blowing bracket (15) is fixedly mounted on the upper end of the base plate (11) below the welding device (14); an air blowing pipe (16) is installed at the upper end of the air blowing bracket (15) in a downwardly inclined manner; and a light blocking plate (17) is fixedly mounted on the upper end of the base plate (11) in front of the air blowing pipe (16).

3. The bellows joint welding device according to claim 1, characterized in that: A synchronous pulley (23) is fixedly sleeved on one end of the rotating cylinder (22) away from the synchronous tube body (3), a belt (24) is sleeved on the outer side of the synchronous pulley (23), and a driving pulley (25) is sleeved on the lower end of the inner side of the belt (24), and the driving pulley (25) is driven by the motor shaft of the servo motor fixedly mounted on the lower end of the rotating chuck (2).

4. The bellows joint welding device according to claim 1, characterized in that: A reinforcing block (53) is fixedly mounted on one side of the transmission seat (5) close to the guide groove (33). The movable arm (56) and the reinforcing block (53) are in sliding contact with the guide groove (33). Both sides of the spring piece (55) are in contact with the bottom of the inner cavity of the convex plate (54) and the shrinkage groove (52), respectively.

5. The bellows joint welding device according to claim 1, characterized in that: An internally supported clamping assembly is installed at one end of the synchronization tube body (3) away from the rotating cylinder (22); The clamping assembly includes a regular polygonal block (32) fixedly mounted on 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 polygonal block (32), one end of the clamp rod (44) passes through the through hole and extends to the outside, and the end of the clamp rod (44) outside the through hole is fixedly sleeved with a conical cylinder (65), a side of the regular polygonal block (32) away from the synchronous tube body (3) is provided with a plurality of rotating grooves (35) in an annular array, each rotating groove (35) is provided with a locking claw (6) which is rotatably mounted via a rotating shaft, an arc hole (61) is formed through the side of the locking claw (6), and a plurality of locking claws (6) are distributed in an annular array on the outside of the conical cylinder (65), and a side of the locking claw (6) close to the conical cylinder (65) is fixedly connected with an extrusion block (62), and the extrusion block (62) is in extrusion contact with the oblique 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 in the arc-shaped hole (61), and a return spring (64) is sleeved on the arc-shaped rod (63), and the two ends of the return spring (64) are respectively in contact with the side wall of the rotating groove (35) and the side surface of the locking claw (6).

6. The bellows joint welding device according to claim 1, characterized in that: The rotary fixture includes a support plate (72) fixedly mounted on the upper end of the base plate (11), the upper end of the support plate (72) is recessed downward to form a reciprocating groove (73), a screw rod (74) is rotatably mounted in the reciprocating groove (73), the screw rod (74) is driven by the output shaft of a stepper motor fixedly mounted on the side of the support plate (72), a threaded sleeve (75) is sleeved on the screw rod (74), the threaded sleeve (75) is slidably connected to the reciprocating groove (73) left and right, a movable plate (76) is fixedly mounted on the upper end of the threaded sleeve (75), a T-shaped guide rail (77) is fixedly mounted on the upper end of the movable plate (76) symmetrically left and right, the lower end of the movable plate (76) is in sliding contact with the upper end of the support plate (72) left and right, and a clamping assembly is symmetrically mounted on the upper end of the movable plate (76) front and back.

7. The bellows joint welding device according to claim 6, characterized in that: The clamping assembly includes a concave base (8) mounted on the upper end of the movable plate (76) in a forward and backward sliding manner, a T-shaped slot is symmetrically provided at the lower end of the concave base (8), and the T-shaped slot is slidably connected to the T-shaped guide rail (77) in a forward and backward sliding manner, a clamping cylinder (81) is fixedly mounted on the side of the concave base (8) in a forward and backward symmetrical manner, the clamping cylinder (81) is fixedly mounted on the upper end of the movable plate (76), a concave frame (82) is fixedly mounted on the upper end of the concave base (8), and a clamping roller (83) is symmetrically mounted on the side of the concave frame (82) in a forward and backward symmetrical manner through a bearing, and the clamping roller (83) is in rolling contact with the bellows body (71).

8. The bellows joint welding device according to claim 6, characterized in that: A bearing assembly is fixedly mounted on the upper end of the movable plate (76) between the two clamping assemblies. The bearing assembly includes a lifting cylinder (9) fixedly mounted on the upper end of the movable plate (76). A concave seat (91) is fixedly mounted on the upper end of the inner rod of the lifting cylinder (9).

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