Automatic corrugated pipe welding equipment

Abstract

The invention relates to the technical field of corrugated pipe welding, and discloses corrugated pipe automatic welding equipment which comprises a workbench, a rotatable and translational chuck is arranged above the workbench, a flange tool is clamped on the chuck, the flange tool right faces a corrugated pipe tool, and the corrugated pipe tool is detachably connected to a rotating seat; and an argon arc welding gun is arranged above the flange tool and the corrugated pipe tool. The multiple sets of corrugated pipe tools are arranged, and the multiple sets of corrugated pipe tools are different in size and specification but consistent in structure. The multiple first bearings and the multiple middle connecting discs are correspondingly arranged. The flange tool comprises a plurality of circular bosses which are coaxially arranged, wherein the outer diameters of the circular bosses are gradually increased. The corrugated pipe and flange welding device can automatically complete welding work of a corrugated pipe and a flange after manual clamping is completed, and the problems that existing manual welding is high in cost and low in welding efficiency are effectively solved. By arranging corrugated pipe tools of various specifications and flange tools of a plurality of round bosses of different specifications, the corrugated pipe welding tool can be adapted to corrugated pipe welders of different sizes and specifications.

Description

Technical Field

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

[0002] The bellows is a pipe with a regular wave shape. Commonly used bellows are made of carbon steel, stainless steel, steel lined with plastic or aluminum. Two flange joints are sealed and welded at both ends of the bellows. They are fixed by manual spot welding and then manually circumferentially welded. This requires high skills from the workers. The use of manual welding greatly increases the labor intensity of the staff and has low welding efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic bellows welding device, which can automatically complete the welding of bellows and flanges after manual clamping, effectively solving the problems of high cost and low welding efficiency of existing manual welding. By setting up bellows fixtures of various specifications and flange fixtures with round bosses of different specifications, the welding work of bellows of different sizes and specifications can be adapted.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: An automatic bellows welding device comprises a workbench, a rotatable and translatable chuck is arranged above the workbench, a flange tool is clamped on the chuck, the flange tool is directly opposite to the bellows tool, the bellows tool is detachably connected to a rotating seat, and the rotating seat is fixed on the workbench; An argon arc welding gun is arranged above the flange tooling and the bellows tooling.

[0005] The workbench is also provided with a controller, which controls the translation and rotation of the chuck and the movement and switching of the argon arc welding gun.

[0006] Bellows welding steps: 1. Install the bellows on the bellows tooling; 2. Install the bellows tooling with the bellows on the bearing seat; 3. Insert the vacuum quick-release flange onto the flange tooling; 4. The controller controls the chuck to drive the flange tooling to move, and the flange tooling drives the vacuum quick release flange to approach the bellows. When the vacuum quick release flange is pressed against the bellows; 5. Move the argon arc welding gun to the welding joint of the vacuum quick release flange and the bellows; 6. The controller controls the argon arc welding gun to work and controls the chuck to rotate at the same time. The chuck drives the vacuum quick release flange to rotate through the flange tooling, and the vacuum quick release flange drives the bellows to rotate together. The argon arc welding gun can weld the joint of the bellows and the vacuum quick release flange. The bellows and the vacuum quick release flange rotate one circle to complete the welding work; 7. The controller controls the chuck to move away from the bellows, and the chuck drives the flange chuck to separate from the vacuum quick-release flange. Then the welded bellows and the bellows tooling are removed from the rotating seat together, and the welded bellows is taken out of the bellows tooling.

[0007] The present invention is further configured as follows: the rotating seat comprises a first bearing inserted and sleeved on the bellows fixture, the first bearing is inserted and fixed on the intermediate connecting plate, the intermediate connecting plate is inserted and sleeved on the inner ring of the second bearing; the outer wall of the intermediate connecting plate is formed with a retaining ring, and the retaining ring is pressed against the inner ring end face of the second bearing; The second bearing is fixed in the bearing base, and the bearing base is fixedly connected to the workbench; The bearing base is formed with a clearance hole which is arranged opposite to the working arrangement of the bellows.

[0008] Through the above technical solution, the bellows can greatly reduce the resistance during rotation due to the cooperation of the first bearing and the second bearing during the welding process, thereby ensuring that no misalignment occurs when the bellows and the vacuum quick-release flange are welded.

[0009] The present invention is further configured as follows: the bellows tooling is two symmetrically arranged semicircular ferrules; The semicircular ferrule comprises a semicircular ring, a supporting protrusion is formed on the outer wall of the semicircular ring, and an inwardly protruding semicircular clamping plate is formed at one end of the semicircular ring close to the flange tooling; The outer diameter of the semicircular ring is arranged to be clearance-matched with the inner diameter of the first bearing.

[0010] Through the above technical solution, during installation, two semicircular rings are inserted into the outside of the bellows, and the semicircular clamping plate is inserted into one of the grooves of the bellows. The semicircular clamping plate can be used to limit the axial direction of the bellows, thereby positioning the bellows.

[0011] The present invention is further configured as follows: the bellows tooling is provided with multiple sets, the sizes and specifications of the multiple sets of bellows tooling are different but the structures are consistent; the first bearing and the intermediate connecting plate are correspondingly provided with multiple sets; The flange tooling includes a plurality of coaxially arranged circular bosses with gradually increasing outer diameters and a base shaft, the base shaft being clamped between a plurality of claws of a chuck, and the outer diameters of different circular bosses being transitionally matched with the inner diameters of corresponding vacuum quick-release flanges, so that the vacuum quick-release flange will not slide relative to the flange tooling after being installed thereon.

[0012] Bellows fixtures of different specifications can clamp bellows of different sizes, and different round bosses of the flange fixture can also be connected to vacuum quick-release flanges of different sizes; thus, bellows and vacuum quick-release flanges of different specifications can be welded by using bellows fixtures of different specifications, the first bearing and the intermediate connecting plate, thereby improving the practicability of the welding equipment.

[0013] The present invention is further configured as follows: the chuck is fixed to one end of the chuck spindle, the middle part of the chuck spindle is rotatably connected to the spindle seat, the spindle seat is fixed to the moving seat, the moving seat is rotatably connected to the guide rail through a slider, and the guide rail is fixed to the workbench; The other end of the chuck spindle is connected to the output end of the reducer through a connecting shaft, the input end of the reducer is connected to the motor shaft of the first servo motor, the first servo motor is fixed to the housing of the reducer, the housing of the reducer is fixed to the bracket, and the bracket is fixed to the moving seat; The bracket is sleeved and fixed with a lead screw nut, the lead screw nut is threaded on the lead screw, and the lead screw is connected to a second servo motor that drives the lead screw to rotate. The controller controls the first servo motor and the second servo motor.

[0014] The second servo motor drives the screw to rotate, the screw drives the screw nut to move left or right, the screw nut drives the moving seat to move through the bracket, the moving seat drives the chuck to move through the spindle seat machine chuck spindle, the chuck drives the flange tooling to move, so that the flange tooling brings the vacuum quick release flange close to the bellows or the flange tooling is separated from the vacuum quick release flange after welding.

[0015] The first servo motor drives the connecting shaft to rotate through the reducer, the connecting shaft drives the chuck to rotate through the chuck main shaft, the chuck drives the flange tooling to rotate, the flange tooling drives the vacuum quick release flange to rotate, and the vacuum quick release flange drives the bellows to rotate together, thereby achieving full circle welding of the bellows. The chuck can be precisely controlled by the first servo motor The present invention is further configured as follows: the screw rod is connected to the motor shaft of the second servo motor via a coupling; The second servo motor is fixed on the motor connecting plate, the motor connecting plate is inserted into a pair of parallel support rods, one end of the support rod is fixed on the support frame, the support frame is fixed on the workbench, the other end of the support rod is fixed with a spring support block, and a buffer spring is clamped between the spring support block and the motor connecting plate.

[0016] Through the above technical scheme, the motor connecting plate can move on the support rod, so that when the chuck drives the vacuum quick-release flange to move close to the bellows, the two will not be too rigid when in contact, and the chuck can react to the chuck spindle, and the chuck spindle reacts to the lead screw nut through the spindle seat, the moving seat, and the bracket, and the lead screw nut drives the second servo motor to move right through the lead screw, and the buffer spring can play a buffering role and a resetting role on the motor connecting plate, so that the bellows and the vacuum quick-release flange are relatively flexible when in contact, and no large deformation will occur.

[0017] The present invention is further configured as follows: the argon arc welding gun is fixed to one end of the welding gun bracket, the other end of the welding gun bracket is fixed to a first slider of a first linear module arranged vertically; the lower end of the first linear module is fixed to a second slider of a second linear module arranged horizontally, and the second linear module is fixed to a workbench. A controller controls the first linear module and the second linear module.

[0018] Through the above technical solution, the second linear module can drive the first linear module to move left and right, the first linear module can drive the welding gun bracket to move up and down, and the welding gun bracket drives the argon arc welding gun to move, thereby moving the argon arc welding gun to the corresponding position to weld the corrugated pipe.

[0019] The present invention is further configured as follows: the flange tooling and the bellows tooling are coaxially arranged; The argon arc welding gun is arranged directly opposite to the central axis of the flange tooling.

[0020] Therefore, the argon arc welding gun is located directly above the welding point between the bellows and the vacuum quick-release flange when the welding work is being performed.

[0021] The outstanding effects of the present invention are: Compared with the prior art, the split-type bellows fixture can facilitate the clamping of the bellows, and the bellows fixture is inserted into the rotating seat by inserting the bellows fixture, which can also facilitate the clamping and disassembly of the bellows fixture. By setting up bellows fixtures of various specifications and flange fixtures with round bosses of various specifications, the welding work of bellows of different sizes and specifications can be adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the assembly of the rotating seat and the bellows tooling of the present invention; Figure 4 for Figure 3 a cross-sectional view of the components shown; Figure 5 It is a structural schematic diagram of the bellows tooling of the present invention; Figure 6 for Figure 2 A partial enlarged view of A; Figure 7 It is another side schematic diagram of the present invention; Figure 8 for Figure 1 A partial enlarged view of B; Fig. 9 It is a schematic diagram of the assembly of the argon arc welding gun, welding gun bracket, etc. of the present invention; Fig.10 It is a schematic structural diagram of the welded corrugated pipe of the present invention.

[0023] Reference numerals: 10, workbench; 101, frame; 102, turntable; 103, driving positioning rod; 104, gear ring; 105, driving gear; 106, servo motor; 20. chuck; 21. chuck spindle; 22. spindle seat; 23. moving seat; 24. slider; 25. guide rail; 26. reducer; 27. first servo motor; 28. bracket; 29. ​​screw nut; 210. screw; 211. second servo motor; 212. motor connecting plate; 213. support rod; 214. spring support block; 215. buffer spring; 216. support frame; 30. Flange tooling; 301. Round boss; 302. Base shaft; 40. Bellows tooling; 401. Semicircular ferrule; 402. Semicircular ring; 403. Semicircular pallet; 50, rotating seat; 501, first bearing; 502, intermediate connecting plate; 503, second bearing; 504, retaining ring; 505, bearing base; 60. Argon arc welding gun; 61. Welding gun bracket; 62. First linear module; 63. Second linear module; 90. Bellows; 91. Vacuum quick-release flange. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] The following references Figures 1 to 10 The present invention is described: A bellows automatic welding device, such as Figure 1 , Figure 2 As shown, it includes a workbench 10, a rotatable and translatable chuck 20 is provided above the workbench 10, a flange tool 30 is clamped on the chuck 20, the flange tool 30 is directly opposite to the bellows tool 40, the bellows tool 40 is detachably connected to the rotating seat 50, and the rotating seat 50 is fixed on the workbench 10; An argon arc welding gun 60 is disposed above the flange fixture 30 and the bellows fixture 40 .

[0026] The workbench is also provided with a controller, which controls the translation and rotation of the chuck and the movement and switching of the argon arc welding gun.

[0027] Bellows welding steps: 1. Install the bellows 90 onto the bellows tooling; 2. Install the bellows tooling with the bellows on the bearing seat; 3. Insert the vacuum quick-release flange 91 onto the flange tooling; 4. The controller controls the chuck to drive the flange tooling to move, and the flange tooling drives the vacuum quick release flange to approach the bellows. When the vacuum quick release flange is pressed against the bellows; 5. Move the argon arc welding gun to the welding joint of the vacuum quick release flange and the bellows; 6. The controller controls the argon arc welding gun to work and controls the chuck to rotate at the same time. The chuck drives the vacuum quick release flange to rotate through the flange tooling, and the vacuum quick release flange drives the bellows to rotate together. The argon arc welding gun can weld the joint of the bellows and the vacuum quick release flange. The bellows and the vacuum quick release flange rotate one circle to complete the welding work; 7. The controller controls the chuck to move away from the bellows, and the chuck drives the flange chuck to separate from the vacuum quick-release flange. Then the welded bellows and the bellows tooling are removed from the rotating seat together, and the welded bellows is taken out of the bellows tooling.

[0028] like Figure 3 , Figure 4 As shown, the rotating seat 50 includes a first bearing 501 inserted on the bellows fixture 40, the first bearing 501 is inserted and fixed on the intermediate connecting plate 502, and the intermediate connecting plate 502 is inserted on the inner ring of the second bearing 503; the outer wall of the intermediate connecting plate 502 is formed with a retaining ring 504, and the retaining ring 504 is pressed against the inner ring end face of the second bearing 503; The second bearing 503 is fixed in the bearing base 505, and the bearing base 505 is fixedly connected to the workbench 10; The bearing base 505 is formed with a clearance hole 506 which is arranged opposite to the bellows working 40 .

[0029] Through the above technical solution, the bellows can greatly reduce the resistance during rotation due to the cooperation of the first bearing and the second bearing during the welding process, thereby ensuring that no misalignment occurs when the bellows and the vacuum quick-release flange are welded.

[0030] like Figure 5 As shown, the bellows fixture 40 is two symmetrically arranged semicircular ferrules 401; The semicircular ferrule 401 includes a semicircular ring 402, a supporting protrusion 402 is formed on the outer wall of the semicircular ring 402, and an inwardly protruding semicircular clamping plate 403 is formed at one end of the semicircular ring 402 close to the flange tooling 30; The outer diameter of the semicircular ring 402 is configured to be in clearance fit with the inner diameter of the first bearing 503 .

[0031] Through the above technical solution, during installation, the two semicircular rings are inserted into the outside of the bellows 90, and the semicircular clamp is inserted into one of the grooves of the bellows. The semicircular clamp can be used to limit the axial direction of the bellows, thereby positioning the bellows.

[0032] The bellows fixture 40 is provided with multiple sets, and the sizes and specifications of the multiple sets of bellows fixtures 40 are different but the structures are consistent; the first bearing 501 and the middle connecting plate 502 are correspondingly provided with multiple sets; like Figure 6 As shown, the flange tooling 30 includes a plurality of coaxially arranged circular bosses 301 and a base shaft 302 with gradually increasing outer diameters. The base shaft 302 is clamped between a plurality of claws of the chuck 20. The outer diameters of different circular bosses are transitionally matched with the inner diameters of the corresponding vacuum quick-release flanges, so that the vacuum quick-release flange will not slide relative to the flange tooling after being installed on the flange tooling.

[0033] Bellows fixtures of different specifications can clamp bellows of different sizes, and different round bosses of the flange fixture can also be connected to vacuum quick-release flanges of different sizes; thus, bellows and vacuum quick-release flanges of different specifications can be welded by using bellows fixtures of different specifications, the first bearing and the intermediate connecting plate, thereby improving the practicability of the welding equipment.

[0034] like Figure 7 As shown, the chuck 20 is fixed to one end of the chuck spindle 21, the middle part of the chuck spindle 21 is rotatably connected to the spindle seat 22, the spindle seat 22 is fixed to the moving seat 23, the moving seat 23 is rotatably connected to the guide rail 25 through the slider 24, and the guide rail 25 is fixed to the workbench 10; The other end of the chuck spindle 21 is connected to the output end of the reducer 26 through a connecting shaft, and the input end of the reducer 26 is connected to the motor shaft of the first servo motor 27. The first servo motor 27 is fixed to the housing of the reducer 26, and the housing of the reducer is fixed to the bracket 28, and the bracket 28 is fixed to the moving seat 23; A screw nut 29 is sleeved and fixed on the bracket 28, and the screw nut 29 is screwed on the screw 210. The screw 210 is connected to a second servo motor 211 that drives the screw 210 to rotate. The controller controls the first servo motor and the second servo motor.

[0035] The second servo motor drives the screw to rotate, the screw drives the screw nut to move left or right, the screw nut drives the moving seat to move through the bracket, the moving seat drives the chuck to move through the spindle seat machine chuck spindle, the chuck drives the flange tooling to move, so that the flange tooling brings the vacuum quick release flange close to the bellows or the flange tooling is separated from the vacuum quick release flange after welding.

[0036] The first servo motor drives the connecting shaft to rotate through the reducer, the connecting shaft drives the chuck to rotate through the chuck main shaft, the chuck drives the flange tooling to rotate, the flange tooling drives the vacuum quick release flange to rotate, and the vacuum quick release flange drives the bellows to rotate together, thereby achieving full circle welding of the bellows. The chuck can be precisely controlled by the first servo motor like Figure 8 As shown, the screw rod 210 is connected to the motor shaft of the second servo motor 211 through a coupling; The second servo motor 211 is fixed on the motor connecting plate 212, and the motor connecting plate 212 is inserted into a pair of parallel support rods 213, one end of the support rod 213 is fixed on the support frame 216, and the support frame 216 is fixed on the workbench 10, and the other end of the support rod 213 is fixed with a spring support block 214, and a buffer spring 215 is clamped between the spring support block 214 and the motor connecting plate 212.

[0037] Through the above technical scheme, the motor connecting plate can move on the support rod, so that when the chuck drives the vacuum quick-release flange to move close to the bellows, the two will not be too rigid when in contact, and the chuck can react to the chuck spindle, and the chuck spindle reacts to the lead screw nut through the spindle seat, the moving seat, and the bracket, and the lead screw nut drives the second servo motor to move right through the lead screw, and the buffer spring can play a buffering role and a resetting role on the motor connecting plate, so that the bellows and the vacuum quick-release flange are relatively flexible when in contact, and no large deformation will occur.

[0038] like Fig. 9 As shown, the argon arc welding gun 60 is fixed to one end of a welding gun bracket 61, and the other end of the welding gun bracket 61 is fixed to a first slider of a vertically arranged first linear module 62; the lower end of the first linear module 62 is fixed to a second slider of a horizontally arranged second linear module 63, and the second linear module 63 is fixed to the workbench 10. The controller controls the first linear module and the second linear module.

[0039] Through the above technical solution, the second linear module can drive the first linear module to move left and right, the first linear module can drive the welding gun bracket to move up and down, and the welding gun bracket drives the argon arc welding gun to move, thereby moving the argon arc welding gun to the corresponding position to weld the corrugated pipe.

[0040] The flange fixture 30 and the bellows fixture 40 are coaxially arranged; The argon arc welding gun 60 is arranged facing the central axis of the flange tooling 30 .

[0041] Therefore, the argon arc welding gun is located directly above the welding point between the bellows and the vacuum quick-release flange when the welding work is being performed.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic bellows welding device, comprising a workbench (10), characterized in that: A rotatable and translatable chuck (20) is provided above the workbench (10); a flange tool (30) is clamped on the chuck (20); the flange tool (30) is directly opposite to the bellows tool (40); the bellows tool (40) is detachably connected to a rotating seat (50); and the rotating seat (50) is fixed on the workbench (10); An argon arc welding gun (60) is provided above the flange tooling (30) and the bellows tooling (40).

2. The automatic bellows welding equipment according to claim 1 is characterized in that: The rotating seat (50) comprises a first bearing (501) inserted into and fixed on the bellows fixture (40); the first bearing (501) is inserted into and fixed on the intermediate connecting plate (502); the intermediate connecting plate (502) is inserted into the inner ring of the second bearing (503); a retaining ring (504) is formed on the outer wall of the intermediate connecting plate (502), and the retaining ring (504) is pressed against the inner ring end surface of the second bearing (503); The second bearing (503) is fixed in a bearing base (505), and the bearing base (505) is fixedly connected to the workbench (10); The bearing base (505) is formed with a clearance hole (506) arranged opposite to the bellows working surface (40).

3. The automatic bellows welding equipment according to claim 2 is characterized in that: The bellows fixture (40) is two symmetrically arranged semicircular ferrules (401); The semicircular ferrule (401) comprises a semicircular ring (402), a supporting protrusion (402) is formed on the outer wall of the semicircular ring (402), and an inwardly protruding semicircular clamping plate (403) is formed at one end of the semicircular ring (402) close to the flange tooling (30); The outer diameter of the semicircular ring (402) is arranged to be clearance-matched with the inner diameter of the first bearing (503).

4. The automatic bellows welding equipment according to claim 3 is characterized in that: The bellows fixture (40) is provided in multiple sets, and the multiple sets of bellows fixtures (40) have different sizes and specifications but the same structure; the first bearing (501) and the middle connecting plate (502) are provided in multiple sets correspondingly; The flange tooling (30) comprises a plurality of coaxially arranged circular bosses (301) with gradually increasing outer diameters and a base shaft (302), wherein the base shaft (302) is clamped between a plurality of clamping claws of the chuck (20).

5. The automatic bellows welding equipment according to claim 1 is characterized in that: The chuck (20) is fixed to one end of a chuck spindle (21); the middle of the chuck spindle (21) is rotatably connected to a spindle seat (22); the spindle seat (22) is fixed to a movable seat (23); the movable seat (23) is rotatably connected to a guide rail (25) via a slider (24); and the guide rail (25) is fixed to a workbench (10); The other end of the chuck spindle (21) is connected to the output end of the reducer (26) via a connecting shaft, the input end of the reducer (26) is connected to the motor shaft of the first servo motor (27), the first servo motor (27) is fixed to the housing of the reducer (26), the housing of the reducer is fixed to the bracket (28), and the bracket (28) is fixed to the moving seat (23); A lead screw nut (29) is sleeved and fixed on the bracket (28), the lead screw nut (29) is threadedly connected to the lead screw (210), and the lead screw (210) is connected to a second servo motor (211) for driving the lead screw to rotate.

6. The automatic bellows welding equipment according to claim 5, characterized in that: The screw rod (210) is connected to the motor shaft of the second servo motor (211) via a coupling; The second servo motor (211) is fixed on a motor connecting plate (212), the motor connecting plate (212) is inserted into a pair of parallel supporting rods (213), one end of the supporting rod (213) is fixed on a supporting frame (216), the supporting frame (216) is fixed on a workbench (10), a spring supporting block (214) is fixed on the other end of the supporting rod (213), and a buffer spring (215) is clamped between the spring supporting block (214) and the motor connecting plate (212).

7. The automatic bellows welding equipment according to claim 1, characterized in that: The argon arc welding gun (60) is fixed to one end of a welding gun bracket (61), and the other end of the welding gun bracket (61) is fixed to a first slider of a first linear module (62) arranged vertically; the lower end of the first linear module (62) is fixed to a second slider of a second linear module (63) arranged horizontally, and the second linear module (63) is fixed to the workbench (10).

8. The automatic bellows welding equipment according to claim 7, characterized in that: The flange fixture (30) and the bellows fixture (40) are coaxially arranged; The argon arc welding gun (60) is arranged facing the central axis of the flange tooling (30).

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