Automatic welding device for connecting metal corrugated pipe and connecting pipe

Abstract

The invention discloses an automatic welding device for connection of a metal corrugated pipe and a connecting pipe, and relates to the technical field of welding devices.The automatic welding device comprises a mounting frame, a feeding mechanism is fixedly mounted on the upper surface of the mounting frame, a first carrying mechanism is fixedly mounted on the upper surface of the mounting frame, and the first carrying mechanism is located on the outer side of the feeding mechanism; and a rotating mechanism is fixedly mounted on the upper surface of the mounting frame, the rotating mechanism is located on the other side of the first carrying mechanism, a welding mechanism is fixedly mounted at the output end of the rotating mechanism, and a fixing mechanism is fixedly mounted at the top of the rotating mechanism. Through cooperative work of the feeding mechanism, the first carrying mechanism, the second carrying mechanism and the third carrying mechanism, feeding of connecting pipes and corrugated pipes and automatic assembling of the connecting pipes and the corrugated pipes can be completed correspondingly.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to an automatic welding device for connecting a metal bellows and a connecting pipe. Background Art

[0002] Metal bellows is a pipe with multiple longitudinal corrugations. The shape of the bellows is similar to a wavy pipe. There is a parallel channel between each crest and trough. These channels are used as channels for water, gas or other fluids to pass through. The bellows are mainly used for connecting pipes and equipment in situations where a small bending radius is required, or irregular turns and expansions, and where it is not convenient to install fixed elbows. The advantages of bellows include strong pressure resistance, light weight, and easy installation and maintenance. When connecting metal bellows to other pipes or valves, an external pipe must be welded to the end of the bellows connection.

[0003] The Chinese patent document with publication number CN102974914B discloses a bellows girth welding machine, which records that "it includes a bracket, a welding gun moving mechanism connected to the upper part of the bracket for driving the welding gun to move, and a weldment rotating mechanism connected to the lower part of the bracket for driving the weldment to rotate, and the welding gun moving mechanism moves relative to the bracket to adjust the welding position." The bellows girth welding machine can accurately control the welding position, improve the welding quality, simplify the welding operation, and has a high degree of automation.

[0004] A bellows girth welding machine is disclosed in the Chinese patent document with publication number CN209477561U, which records that "it includes a machine body, a workbench is provided on the upper surface of the machine body, a support plate is provided on the upper surface of the workbench, a support frame is provided on the upper surface of the support plate, a hydraulic cylinder is provided on the upper surface of the support frame, a hydraulic telescopic rod is provided on the outer wall of the hydraulic cylinder, and a welding gun is provided at one end of the hydraulic telescopic rod". The device plays the role of holding the bellows through the setting of the holding cylinder, thereby effectively avoiding the problem of dislocation of the bellows during the girth welding process.

[0005] However, the following defects or problems still exist in combination with the prior art: First, in the existing welding device, manual loading is required when performing circumferential welding on the bellows and the connecting pipe. The bellows and the connecting pipe are manually placed on a fixing mechanism and then welded with a welding gun. This method requires manual loading and has low production efficiency; second, when performing circumferential welding on the bellows and the connecting pipe, since the bellows and the connecting pipe are manually fixed by a transmission fixing clamp, errors are prone to occur in the joints between the bellows and the connecting pipe, resulting in a loose fit when the bellows and the connecting pipe are welded, and weld leakage is prone to occur, thereby affecting the welding quality. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic welding device for connecting a metal bellows with a connecting pipe.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic welding device for connecting a metal corrugated pipe and a pipe comprises a mounting frame, a feeding mechanism is fixedly mounted on the upper surface of the mounting frame, a first conveying mechanism is fixedly mounted on the upper surface of the mounting frame, the first conveying mechanism is located on the outer side of the feeding mechanism, a rotating mechanism is fixedly mounted on the upper surface of the mounting frame, the rotating mechanism is located on the other side of the first conveying mechanism, a welding mechanism is fixedly mounted on the output end of the rotating mechanism, a fixing mechanism is fixedly mounted on the top of the rotating mechanism, the welding mechanism is located on the outer side of the fixing mechanism, a second conveying mechanism is fixedly mounted on the upper surface of the mounting frame, a first conveyor is arranged on one side of the second conveying mechanism, a third conveying mechanism is fixedly mounted on the upper surface of the mounting frame, the third conveying mechanism corresponds to the second conveying mechanism, a second conveyor is arranged on one side of the third conveying mechanism, and a main controller is fixedly mounted on the outer wall of the mounting frame; The fixing mechanism comprises a second cylinder, an output end of the second cylinder is fixedly connected to an upper positioning mechanism, and the upper positioning mechanism comprises an upper base plate, an upper surface of the upper base plate is fixedly connected to a guide rod, a top end of the guide rod is fixedly connected to a fixing seat, an outer wall of the guide rod is slidably connected to a sliding seat, an outer wall of the sliding seat is movably connected to a second swing rod, the other end of the second swing rod is fixedly connected to an inner clamping plate, a side wall of the second swing rod is movably connected to the first swing rod, the other end of the first swing rod is movably connected to the fixing seat, a third cylinder is fixedly installed on the outer wall of the upper base plate, and the output end of the third cylinder is fixedly connected to the sliding seat, and there are four inner clamping plates, the second swing rod and the first swing rod, and the four inner clamping plates, the second swing rod and the first swing rod are equidistantly arranged along the center of the guide rod; The inner clamping plate comprises an inner clamping block, the inner wall of which is provided with a groove, a second spring is arranged inside the groove, the inner clamping block is located in the groove and is slidably sleeved with a convex head, there are multiple convex heads, and the convex heads match the wave crests of the corrugated pipe.

[0008] Preferably, the feeding mechanism includes a fixed frame, which is fixedly mounted on the lower surface of the mounting frame, and a stepper motor is fixedly mounted on the outer wall of the fixed frame. The output end of the stepper motor is fixedly connected to a first output shaft, and the other end of the first output shaft is fixedly connected to a shell, and the other end of the shell passes through and extends to the upper surface of the mounting frame, and the extending end of the shell is fixedly connected to a turntable, and both sides of the upper surface of the turntable are fixedly connected to feeding rods.

[0009] Preferably, a first cylinder is fixedly mounted on the inner wall of the shell, a push block is fixedly connected to the output end of the first cylinder, the other end of the push block penetrates and extends to the upper surface of the turntable, limiting plates are arranged on both sides of the push block, a movable block is slidably sleeved on the outer wall of the limiting plate, a side of the movable block close to the push block contacts the outer wall of the push block, a push plate is fixedly connected to the other side of the movable block, a spring resistor is fixedly mounted on the outer wall of the limiting plate, and the other end of the spring resistor is fixedly connected to the outer wall of the movable block; The spring resistor comprises a sleeve, a first spring is arranged inside the sleeve, a telescopic rod is slidably sleeved on one end of the sleeve, and the first spring contacts one end of the telescopic rod.

[0010] Preferably, the first conveying mechanism includes a first support frame, the first support frame is fixedly mounted on the upper surface of the mounting frame, a first linear motor is fixedly mounted on the outer wall of the first support frame, an output end of the first linear motor is fixedly connected to a rotating cylinder, an output end of the rotating cylinder is fixedly connected to a first mounting plate, and a first pneumatic finger is fixedly mounted on the outer wall on the other side of the first mounting plate.

[0011] Preferably, the rotating mechanism includes a first reduction motor, which is located inside the mounting frame, and the output end of the first reduction motor is fixedly connected to the second output shaft, and a slewing bearing is fixedly installed on the upper surface of the mounting frame, and the outer wall of the mounting frame is fixedly connected to the inner ring of the slewing bearing, and the other end of the second output shaft is fixedly sleeved with a gear, and the gear is meshed with the outer ring teeth of the slewing bearing, and the welding mechanism is fixedly installed on the outer ring of the slewing bearing.

[0012] Preferably, the welding mechanism includes a second mounting plate, a second linear motor is fixedly mounted on the outer wall of the second mounting plate, an output end of the second linear motor is fixedly connected to a third linear motor, the second linear motor and the third linear motor are vertically arranged, and an output end of the third linear motor is fixedly connected to a argon arc welding gun.

[0013] Preferably, the fixing mechanism also includes a lower base plate, which is fixedly connected to the inner ring of the slewing bearing, the upper surface of the lower base plate is fixedly connected to a support column, the other end of the support column is fixedly connected to a lower positioning mechanism, and the second cylinder is installed in the middle of the upper surface of the lower positioning mechanism.

[0014] Preferably, the lower positioning mechanism comprises a circular shell, a second reduction motor is fixedly mounted on the outer wall of the circular shell, an output end of the second reduction motor is fixedly connected to a third output shaft, the other end of the third output shaft passes through and extends into the interior of the circular shell, a gear ring is sleeved on the interior of the circular shell, the third output shaft is transmission connected to the gear ring through a gear, a transmission shaft is rotationally connected to the inner wall of the circular shell, the bottom of the transmission shaft is transmission connected to the gear ring through a gear, the top of the transmission shaft is transmission connected to a rack through a gear, a positioning clamp is fixedly connected to the outer wall of the rack, the positioning clamp is divided into four groups, and the four groups of positioning clamps are equidistantly arranged along the center of the circular shell, a cover plate is fixedly connected to the upper surface of the circular shell by screws, and the second cylinder is fixedly mounted on the outer wall of the cover plate; The positioning clamp includes a movable plate, an outer wall of the movable plate is fixedly connected to an adjusting block, an outer wall of the adjusting block is slidably connected to a sliding rod, the adjusting block and the sliding rod are fixed by screws, one end of the sliding rod is fixedly connected to an outer clamping plate, the inner wall of the cover plate is provided with a sliding groove matching the movable plate, and the movable plate extends to the outside of the cover plate through the sliding groove.

[0015] Preferably, the second conveying mechanism includes a third mounting plate, the third mounting plate is fixedly mounted on the upper surface of the mounting frame, a fourth cylinder is fixedly mounted on the upper surface of the third mounting plate, an output end of the fourth cylinder is fixedly connected to a second support frame, the second support frame is slidably connected to the third mounting plate, a fifth cylinder is fixedly mounted on the top outer wall of the second support frame, an output end of the fifth cylinder is fixedly connected to a connecting plate, and a second pneumatic finger is fixedly mounted on the lower surface of the connecting plate; the second conveying mechanism has the same structure as the third conveying mechanism.

[0016] The beneficial effects of the present invention are: 1. In the present invention, the feeding mechanism, the first conveying mechanism, the second conveying mechanism and the third conveying mechanism cooperate to respectively complete the feeding of the connecting pipe and the corrugated pipe and the automatic assembly between the connecting pipe and the corrugated pipe.

[0017] 2. In the present invention, through the design of the fixing mechanism, the lower positioning mechanism, the second cylinder, and the upper positioning mechanism work in coordination, the connecting pipe is positioned by the lower positioning mechanism, and the bellows is positioned by the upper positioning mechanism. At this time, the center of the connecting pipe and the center of the bellows are located on the same straight line. At this time, the second cylinder contracts, and the second cylinder drives the upper positioning mechanism to move downward, and the upper positioning mechanism drives the fixed bellows to move downward, and the bottom interface of the bellows is inserted into the connecting pipe, thereby completing the automatic connection between the connecting pipe and the bellows without manual connection; and because the second cylinder drives the bellows to move downward through the upper positioning mechanism, and the bellows has a certain elasticity, the bellows exerts pressure on the surface of the connecting pipe, so that the bellows and the connecting pipe fit tightly, reducing the risk of weld leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a top view of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0019] Figure 2 The present invention is a schematic structural diagram of a feeding mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0020] Figure 3 The present invention is a schematic structural diagram of a push block and a first cylinder of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0021] Figure 4 The present invention is a schematic structural diagram of a spring resistor of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0022] Figure 5 The present invention is a top view of a first conveying mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0023] Figure 6 The present invention is a rear view of a first conveying mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0024] Figure 7 The present invention is a front view of a rotating mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0025] Figure 8 The present invention is a schematic structural diagram of a welding mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0026] Fig. 9 The present invention is a front view of a fixing mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0027] Fig.10 The present invention is a bottom view of a lower positioning mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0028] Fig.11 The present invention is a schematic structural diagram of a circular shell, a gear ring, a transmission shaft and a rack of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0029] Fig.12 The present invention is a schematic structural diagram of a positioning clamp of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0030] Fig.13 The present invention is a top view of a lower positioning mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0031] Fig.14 The present invention is a schematic structural diagram of a cover plate of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0032] Fig.15 The present invention is a front view of an upper positioning mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0033] Fig.16 The present invention is a schematic structural diagram of an inner clamping plate of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0034] Fig.17 The present invention is a top view of a second conveying mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0035] Fig.18 The present invention is a side view of a second conveying mechanism of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0036] Fig.19 The present invention is a side view of a first conveyor of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0037] Fig. 20 The present invention is a schematic structural diagram of a connecting pipe, a bellows and a welding part of an automatic welding device for connecting a metal bellows to a connecting pipe.

[0038] Fig.21 The present invention is a front view of a connecting pipe, a bellows and a welding part of an automatic welding device for connecting a metal bellows and a connecting pipe.

[0039] Numbers in the figure: 1, mounting frame; 2, feeding mechanism; 201, fixing frame; 202, stepping motor; 203, first output shaft; 204, housing; 205, turntable; 206, nesting rod; 207, limit plate; 208, movable block; 209, push plate; 210, spring resistor; 2101, sleeve; 2102, first spring; 2103, telescopic rod; 211, push block; 212, first cylinder; 3. First transport mechanism; 301. First support frame; 302. First linear motor; 303. Rotary cylinder; 304. First mounting plate; 305. First pneumatic finger; 4. Rotating mechanism; 401. First reduction motor; 402. Second output shaft; 403. Slewing bearing; 5. Welding mechanism; 501. Second mounting plate; 502. Second linear motor; 503. Third linear motor; 504. TIG welding gun; 6. Fixing mechanism; 601. Lower base plate; 602. Support column; 603. Lower positioning mechanism; 6031. Round shell; 6032. Second reduction motor; 6033. Third output shaft; 6034. Gear ring; 6035. Transmission shaft; 6036. Rack; 6037. Positioning clamp; 60371. Moving plate; 60372. Adjustment block; 60373. Sliding rod; 60374. Outer clamp; 6038. Cover plate; 60381, slide; 604, second cylinder; 605, upper positioning mechanism; 6051, upper bottom plate; 6052, guide rod; 6053, third cylinder; 6054, sliding seat; 6055, fixed seat; 6056, first swing rod; 6057, second swing rod; 6058, inner clamping plate; 60581, inner clamping block; 60582, groove; 60583, second spring; 60584, convex head; 7. Second transport mechanism; 701. Third mounting plate; 702. Fourth cylinder; 703. Second support frame; 704. Fifth cylinder; 705. Connecting plate; 706. Second pneumatic finger; 8. The third transport mechanism; 9. The first conveyor; 10. The second conveyor; 11. The main controller; 12. The connecting pipe; 13. The bellows; 14. The welding part. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] As attached Figure 1 To Attachment Fig.21 As shown: An automatic welding device for connecting a metal bellows and a pipe comprises a mounting frame 1, a feeding mechanism 2 is fixedly mounted on the upper surface of the mounting frame 1, a first conveying mechanism 3 is fixedly mounted on the upper surface of the mounting frame 1, the first conveying mechanism 3 is located on the outside of the feeding mechanism 2, a rotating mechanism 4 is fixedly mounted on the upper surface of the mounting frame 1, the rotating mechanism 4 is located on the other side of the first conveying mechanism 3, a welding mechanism 5 is fixedly mounted on the output end of the rotating mechanism 4, a fixing mechanism 6 is fixedly mounted on the top of the rotating mechanism 4, the welding mechanism 5 is located on the outside of the fixing mechanism 6, a second conveying mechanism 7 is fixedly mounted on the upper surface of the mounting frame 1, a first conveyor 9 is arranged on one side of the second conveying mechanism 7, a third conveying mechanism 8 is fixedly mounted on the upper surface of the mounting frame 1, the third conveying mechanism 8 corresponds to the second conveying mechanism 7, a second conveyor 10 is arranged on one side of the third conveying mechanism 8, and a main controller 11 is fixedly mounted on the outer wall of the mounting frame 1.

[0042] The feeding mechanism 2 includes a fixed frame 201, which is fixedly installed on the lower surface of the mounting frame 1. A stepper motor 202 is fixedly installed on the outer wall of the fixed frame 201. The output end of the stepper motor 202 is fixedly connected to a first output shaft 203. The other end of the first output shaft 203 is fixedly connected to a shell 204. The other end of the shell 204 passes through and extends to the upper surface of the mounting frame 1. The extended end of the shell 204 is fixedly connected to a turntable 205. Both sides of the upper surface of the turntable 205 are fixedly connected to the feeding rods 206.

[0043] In the above technical solution, the whole stack of connecting pipes 12 is sleeved on the sleeve rod 206 on the side away from the first conveying mechanism 3 by an external robot, and the stepper motor 202 is started. The stepper motor 202 drives the first output shaft 203 to rotate, and the first output shaft 203 drives the turntable 205 to rotate through the outer shell 204. The turntable 205 drives the connecting pipe 12 to move to the side close to the first conveying mechanism 3 through the sleeve rod 206. At this time, the sleeve rod 206 swings 180 degrees. At this time, the empty sleeve rod 206 on the other side swings to the side away from the first conveying mechanism 3, and the empty sleeve rod 206 waits for the external robot to load.

[0044] A first cylinder 212 is fixedly mounted on the inner wall of the housing 204, a push block 211 is fixedly connected to the output end of the first cylinder 212, the other end of the push block 211 penetrates and extends to the upper surface of the turntable 205, limiting plates 207 are arranged on both sides of the push block 211, a movable block 208 is slidably sleeved on the outer wall of the limiting plate 207, a side of the movable block 208 close to the push block 211 is in contact with the outer wall of the push block 211, a push plate 209 is fixedly connected to the other side of the movable block 208, a spring resistor 210 is fixedly mounted on the outer wall of the limiting plate 207, the other end of the spring resistor 210 is fixedly connected to the outer wall of the movable block 208; In the above technical solution, since the pipe 12 is sleeved on the sleeve rod 206, and the inner ring diameter of the pipe 12 is much larger than the diameter of the sleeve rod 206, when the manipulator places the pipe 12, each pipe 12 is easily misplaced, so that the pipe 12 cannot be neatly stacked, which easily affects the subsequent gripping of the gripper; Therefore, after the loading is completed, the first cylinder 212 is started, and the first cylinder 212 drives the push block 211 to move upward, and the push block 211 pushes the movable block 208 to move to both sides. At this time, the spring resistor 210 is squeezed, and the movable block 208 pushes the push plate 209 to contact the outer wall of the connecting pipe 12, and the push plate 209 pushes the connecting pipe 12 to move until the inner wall of the connecting pipe 12 contacts the outer wall of the sleeve rod 206, thereby positioning the connecting pipe 12.

[0045] The spring resistor 210 includes a sleeve 2101 , a first spring 2102 is disposed inside the sleeve 2101 , a telescopic rod 2103 is slidably sleeved on one end of the sleeve 2101 , and the first spring 2102 is in contact with one end of the telescopic rod 2103 .

[0046] In the above technical solution, after the positioning of the pipe 12 is completed, the first cylinder 212 controls the push block 211 to reset. Under the action of the spring resistor 210, the spring resistor 210 pushes the movable block 208 and the push plate 209 to reset.

[0047] The first conveying mechanism 3 includes a first support frame 301, which is fixedly mounted on the upper surface of the mounting frame 1, and a first linear motor 302 is fixedly mounted on the outer wall of the first support frame 301, and an output end of the first linear motor 302 is fixedly connected to a rotating cylinder 303, and an output end of the rotating cylinder 303 is fixedly connected to a first mounting plate 304, and a first pneumatic finger 305 is fixedly mounted on the outer wall on the other side of the first mounting plate 304.

[0048] In the above technical scheme, the rotating cylinder 303 is started, and the rotating cylinder 303 drives the first pneumatic finger 305 to swing through the first mounting plate 304, and the first pneumatic finger 305 moves to the upper surface of the connecting pipe 12, and the first linear motor 302 is started, and the first linear motor 302 drives the first pneumatic finger 305 to move downward to the connecting pipe 12 through the rotating cylinder 303, and the first pneumatic finger 305 is started, and the connecting pipe 12 is clamped by the first pneumatic finger 305, and the first linear motor 302 is started to move upward, and the connecting pipe 12 is separated from the sleeve rod 206, and then the rotating cylinder 303 is started, and the rotating cylinder 303 drives the connecting pipe 12 to swing to the top of the fixing mechanism 6 through the first mounting plate 304 and the first pneumatic finger 305, and then the first linear motor 302 is started, and the first linear motor 302 drives the first pneumatic finger 305 to move downward to the fixing mechanism 6 through the rotating cylinder 303.

[0049] The rotating mechanism 4 includes a first reduction motor 401, which is located inside the mounting frame 1. The output end of the first reduction motor 401 is fixedly connected to the second output shaft 402. A slewing bearing 403 is fixedly installed on the upper surface of the mounting frame 1. The outer wall of the mounting frame 1 is fixedly connected to the inner ring of the slewing bearing 403. The other end of the second output shaft 402 is fixedly sleeved with a gear. The gear and the outer ring teeth of the slewing bearing 403 are meshed with each other. The welding mechanism 5 is fixedly installed on the outer ring of the slewing bearing 403.

[0050] In the above technical solution, the first reduction motor 401 is started, and the first reduction motor 401 drives the second output shaft 402 to rotate. The second output shaft 402 drives the outer ring of the slewing bearing 403 to rotate through the gear. The slewing bearing 403 drives the argon arc welding gun 504 to rotate through the second mounting plate 501. Relative to the welding device, the connecting pipe 12 and the bellows 13 are fixed. At this time, the argon arc welding gun 504 extends the clockwise rotation of the connecting pipe 12 and the bellows 13 for one circle for welding, and then rotates counterclockwise for one circle for re-welding. At the same time, it is also convenient for the welding mechanism 5 to reset and avoid cable entanglement, thereby completing the welding of the welding portion 14 at the connecting pipe 12 and the bellows 13.

[0051] The welding mechanism 5 includes a second mounting plate 501, a second linear motor 502 is fixedly mounted on the outer wall of the second mounting plate 501, an output end of the second linear motor 502 is fixedly connected to a third linear motor 503, the second linear motor 502 and the third linear motor 503 are vertically arranged, and an output end of the third linear motor 503 is fixedly connected to an argon arc welding gun 504.

[0052] In the above technical solution, the second linear motor 502 drives the argon arc welding gun 504 to move vertically, and the third linear motor 503 drives the argon arc welding gun 504 to move horizontally, so that the argon arc welding gun 504 moves to the welding portion 14 of the bellows 13 and the connecting pipe 12.

[0053] The fixing mechanism 6 includes a lower base plate 601, which is fixedly connected to the inner ring of the slewing bearing 403. A support column 602 is fixedly connected to the upper surface of the lower base plate 601. The other end of the support column 602 is fixedly connected to a lower positioning mechanism 603. A second cylinder 604 is fixedly installed in the middle of the upper surface of the lower positioning mechanism 603. The output end of the second cylinder 604 is fixedly connected to an upper positioning mechanism 605.

[0054] In the above technical solution, the connecting pipe 12 is positioned by the lower positioning mechanism 603, and the bellows 13 is positioned by the upper positioning mechanism 605. At this time, the centers of the connecting pipe 12 and the bellows 13 are located on the same straight line. At this time, the second cylinder 604 contracts, and the second cylinder 604 drives the upper positioning mechanism 605 to move downward. The upper positioning mechanism 605 drives the bellows 13 fixed thereon to move downward, and the bottom interface of the bellows 13 is inserted into the connecting pipe 12, thereby completing the automatic connection between the connecting pipe 12 and the bellows 13 without manual connection; and because the second cylinder 604 drives the bellows 13 to move downward through the upper positioning mechanism 605, and because the bellows 13 has a certain elasticity, the bellows 13 exerts pressure on the surface of the connecting pipe 12, so that the bellows 13 and the connecting pipe 12 fit tightly, and the risk of weld leakage can be reduced when the bellows 13 and the connecting pipe 12 are welded.

[0055] The lower positioning mechanism 603 includes a circular shell 6031, a second reduction motor 6032 is fixedly mounted on the outer wall of the circular shell 6031, an output end of the second reduction motor 6032 is fixedly connected to a third output shaft 6033, the other end of the third output shaft 6033 penetrates and extends into the circular shell 6031, a gear ring 6034 is sleeved inside the circular shell 6031, the third output shaft 6033 is transmission-connected to the gear ring 6034 through a gear, and the inner wall of the circular shell 6031 is rotationally connected to a transmission gear. The bottom of the transmission shaft 6035 is connected to the gear ring 6034 through a gear, the top of the transmission shaft 6035 is connected to the rack 6036 through a gear, the outer wall of the rack 6036 is fixedly connected to the positioning clamp 6037, the positioning clamp 6037 is divided into four groups, and the four groups of positioning clamps 6037 are arranged equidistantly along the center of the circular shell 6031, the upper surface of the circular shell 6031 is fixedly connected to the cover plate 6038 through screws, and the second cylinder 604 is fixedly installed on the outer wall of the cover plate 6038; In the above technical solution, the second reduction motor 6032 is started, the second reduction motor 6032 drives the third output shaft 6033 to rotate, the third output shaft 6033 drives the gear ring 6034 to rotate, the gear ring 6034 drives the rack 6036 to contract through the transmission shaft 6035, and the rack 6036 drives the positioning clamp 6037 to move. At this time, the outer clamp plate 60374 contacts the outer wall of the connecting pipe 12, and the four outer clamp plates 60374 are used in combination to position and fix the connecting pipe 12.

[0056] The positioning clamp 6037 includes a movable plate 60371, the outer wall of which is fixedly connected to an adjusting block 60372, the outer wall of which is slidably connected to a sliding rod 60373, the adjusting block 60372 and the sliding rod 60373 are fixed by screws, one end of the sliding rod 60373 is fixedly connected to an outer clamping plate 60374, and the inner wall of the cover plate 6038 is provided with a sliding groove 60381 matching the movable plate 60371, and the movable plate 60371 extends to the outside of the cover plate 6038 through the sliding groove 60381.

[0057] In the above technical solution, the screws on the adjustment block 60372 are loosened, and the position of the outer clamping plate 60374 can be adjusted by moving the sliding rod 60373, thereby improving the application range of the device.

[0058] The upper positioning mechanism 605 includes an upper bottom plate 6051, the upper surface of the upper bottom plate 6051 is fixedly connected to a guide rod 6052, the top of the guide rod 6052 is fixedly connected to a fixed seat 6055, the outer wall of the guide rod 6052 is slidably connected to a sliding seat 6054, the outer wall of the sliding seat 6054 is movably connected to a second swing rod 6057, the other end of the second swing rod 6057 is fixedly connected to an inner clamping plate 6058, and the side wall of the second swing rod 6057 is movably connected to the first swing rod 6057. The movable rod 6056, the other end of the first swing rod 6056 is movably connected to the fixed seat 6055, the outer wall of the upper base plate 6051 is fixedly installed with a third cylinder 6053, the output end of the third cylinder 6053 is fixedly connected to the sliding seat 6054, the inner clamping plate 6058, the second swing rod 6057, and the first swing rod 6056 are all four, and the four inner clamping plates 6058, the second swing rod 6057, and the first swing rod 6056 are equidistantly arranged along the center of the guide rod 6052; In the above technical solution, the third cylinder 6053 is started, and the third cylinder 6053 pushes the sliding seat 6054 to move upward. The sliding seat 6054 pushes the inner clamping plate 6058 to move outward through the second swing rod 6057 and the first swing rod 6056, and the inner clamping plate 6058 contacts the inner wall of the bellows 13.

[0059] The inner clamping plate 6058 includes an inner clamping block 60581, the inner wall of which is provided with a groove 60582, a second spring 60583 is arranged inside the groove 60582, the inner clamping block 60581 is located in the groove 60582 and is slidably sleeved with a convex head 60584, there are multiple convex heads 60584, and the convex heads 60584 match the wave crests of the corrugated pipe.

[0060] In the above technical solution, the fifth cylinder 704 will drive the bellows 13 to move up and down by half the width of the corrugation through the second pneumatic finger 706. Since the bellows 13 has a certain elasticity and the bellows 13 vibrates, the convex head 60584 is ensured to be stuck in the convex groove of the crest of the bellows 13. At this time, the inner clamp block 60581 is in contact with the trough of the bellows 13. At this time, the upper positioning mechanism 605 completes the fixed positioning of the bellows 13, and then the fifth cylinder 704 and the second pneumatic finger 706 are reset.

[0061] The second conveying mechanism 7 includes a third mounting plate 701, which is fixedly mounted on the upper surface of the mounting frame 1, a fourth cylinder 702 is fixedly mounted on the upper surface of the third mounting plate 701, an output end of the fourth cylinder 702 is fixedly connected to a second support frame 703, the second support frame 703 is slidably connected to the third mounting plate 701, a fifth cylinder 704 is fixedly mounted on the top outer wall of the second support frame 703, an output end of the fifth cylinder 704 is fixedly connected to a connecting plate 705, and a second pneumatic finger 706 is fixedly mounted on the lower surface of the connecting plate 705; the second conveying mechanism 7 has the same structure as the third conveying mechanism 8.

[0062] In the above technical scheme, the bellows 13 is vertically placed on the first conveyor 9, and is transported to the second pneumatic finger 706 by the first conveyor 9, and the fifth cylinder 704 is started. The fifth cylinder 704 drives the second pneumatic finger 706 to move downward through the connecting plate 705, and the second pneumatic finger 706 clamps the top of the bellows 13, and then the fifth cylinder 704 is reset, and the fourth cylinder 702 is started. The fourth cylinder 702 pushes the second support frame 703 to move, and the second support frame 703 drives the bellows 13 to move to the top of the upper positioning mechanism 605 through the fifth cylinder 704 and the second pneumatic finger 706. The fifth cylinder 704 drives the bellows 13 to move downward through the connecting plate 705 and the second pneumatic finger 706, and the bellows 13 is sleeved on the outside of the upper positioning mechanism 605; After welding is completed, the connecting pipe 12 and the corrugated pipe 13 at the fixing mechanism 6 are taken down by the third transport mechanism 8 and placed on the second conveyor 10 , and the welded connecting pipe 12 and the corrugated pipe 13 are unloaded by the second conveyor 10 .

[0063] The specific usage and function of this embodiment are as follows: When the present invention is used, the whole stack of pipes 12 is sleeved on the sleeve rod 206 on the side away from the first conveying mechanism 3 by an external manipulator, and the stepper motor 202 is started. The stepper motor 202 drives the first output shaft 203 to rotate, and the first output shaft 203 drives the turntable 205 to rotate through the housing 204. The turntable 205 drives the pipe 12 to move to the side close to the first conveying mechanism 3 through the sleeve rod 206. At this time, the sleeve rod 206 swings 180 degrees. At this time, the vacant sleeve rod 206 on the other side swings to the side away from the first conveying mechanism 3, and the vacant sleeve rod 206 waits for the external manipulator to load; For the above structure and process, please refer to Figure 1-2 and Fig. 20 .

[0064] Since the pipe 12 is sleeved on the sleeve rod 206, and the inner ring diameter of the pipe 12 is much larger than the diameter of the sleeve rod 206, when the manipulator places the pipes 12, each pipe 12 is easily misplaced, so that the pipes 12 cannot be neatly stacked, which easily affects the subsequent gripping of the pneumatic gripper; Therefore, after the loading is completed, the first cylinder 212 is started, and the first cylinder 212 drives the push block 211 to move upward, and the push block 211 pushes the movable block 208 to move to both sides. At this time, the spring resistor 210 is squeezed, and the movable block 208 pushes the push plate 209 to contact the outer wall of the pipe 12, and the push plate 209 pushes the pipe 12 to move until the inner wall of the pipe 12 contacts the outer wall of the sleeve rod 206, thereby positioning the pipe 12; After the positioning of the pipe 12 is completed, the first cylinder 212 controls the push block 211 to reset. Under the action of the spring resistor 210, the spring resistor 210 pushes the movable block 208 and the push plate 209 to reset. For the above structure and process, please refer to Figure 1-4 and Fig. 20 .

[0065] The rotating cylinder 303 is started, and the rotating cylinder 303 drives the first pneumatic finger 305 to swing through the first mounting plate 304, and the first pneumatic finger 305 moves to the upper surface of the connecting pipe 12, and the first linear motor 302 is started, and the first linear motor 302 drives the first pneumatic finger 305 to move downward to the connecting pipe 12 through the rotating cylinder 303, and the first pneumatic finger 305 is started, and the connecting pipe 12 is clamped by the first pneumatic finger 305, and the first linear motor 302 is started to move upward, and the connecting pipe 12 is separated from the nesting rod 206, and then the rotating cylinder 303 is started, and the rotating cylinder 303 drives the connecting pipe 12 to swing to the top of the fixing mechanism 6 through the first mounting plate 304 and the first pneumatic finger 305, and then the first linear motor 302 is started, and the first linear motor 302 drives the first pneumatic finger 305 to move downward to the fixing mechanism 6 through the rotating cylinder 303, and at this time, the connecting pipe 12 passes through the upper positioning mechanism 605 and is placed on the upper surface of the cover plate 6038; For the above structure and process, please refer to Figure 1-13 and Fig. 20 .

[0066] The second reduction motor 6032 is started, and the second reduction motor 6032 drives the third output shaft 6033 to rotate, and the third output shaft 6033 drives the gear ring 6034 to rotate, and the gear ring 6034 drives the rack 6036 to contract through the transmission shaft 6035, and the rack 6036 drives the positioning clamp 6037 to move, and at this time, the outer clamping plate 60374 contacts the outer wall of the pipe 12, and the pipe 12 is positioned and fixed by the cooperation of the four outer clamping plates 60374; For the above structure and process, please refer to Figure 9-14 and Fig. 20 .

[0067] The bellows 13 is placed vertically on the first conveyor 9, and is transported to the second pneumatic finger 706 by the first conveyor 9. The fifth cylinder 704 is started, and the fifth cylinder 704 drives the second pneumatic finger 706 to move downward through the connecting plate 705. The second pneumatic finger 706 clamps the top of the bellows 13, and then the fifth cylinder 704 is reset, and the fourth cylinder 702 is started. The fourth cylinder 702 pushes the second support frame 703 to move. The second support frame 703 drives the bellows 13 to move directly above the upper positioning mechanism 605 through the fifth cylinder 704 and the second pneumatic finger 706. The fifth cylinder 704 drives the bellows 13 to move downward through the connecting plate 705 and the second pneumatic finger 706, and the bellows 13 is sleeved on the outside of the upper positioning mechanism 605. For the above structure and process, please refer to Figure 1 and Figure 13-20 .

[0068] The third cylinder 6053 is started, and the third cylinder 6053 pushes the sliding seat 6054 to move upward. The sliding seat 6054 pushes the inner clamping plate 6058 to move outward through the second swing rod 6057 and the first swing rod 6056, and the inner clamping plate 6058 contacts the inner wall of the corrugated tube 13; At the same time, the fifth cylinder 704 drives the bellows 13 to move up and down by half the width of the corrugation through the second pneumatic finger 706. Since the bellows 13 has a certain elasticity and the bellows 13 shakes, the convex head 60584 is ensured to be stuck in the convex groove of the crest of the bellows 13. At this time, the inner clamping block 60581 contacts the trough of the bellows 13. At this time, the upper positioning mechanism 605 completes the fixed positioning of the bellows 13, and then the fifth cylinder 704 and the second pneumatic finger 706 are reset; For the above structure and process, please refer to Figure 1 and Figure 15-20 .

[0069] At this time, the centers of the connecting pipe 12 and the bellows 13 are located on the same straight line. At this time, the second cylinder 604 contracts, and the second cylinder 604 drives the upper positioning mechanism 605 to move downward, and the upper positioning mechanism 605 drives the fixed bellows 13 to move downward, and the bottom interface of the bellows 13 is inserted into the connecting pipe 12, thereby completing the automatic sleeve connection of the connecting pipe 12 and the bellows 13, without manual sleeve connection; Furthermore, since the second cylinder 604 drives the bellows 13 to move downward through the upper positioning mechanism 605, and since the bellows 13 has a certain elasticity, the bellows 13 applies pressure to the surface of the connecting pipe 12, so that the bellows 13 and the connecting pipe 12 are closely fitted, and at this time, the risk of weld leakage can be reduced when the bellows 13 and the connecting pipe 12 are welded; For the above structure and process, please refer to Figure 9-21.

[0070] The second linear motor 502 drives the argon arc welding gun 504 to move in the vertical direction, and the third linear motor 503 drives the argon arc welding gun 504 to move in the horizontal direction, so that the argon arc welding gun 504 moves to the welding portion 14 of the bellows 13 and the connecting pipe 12; Start the first reduction motor 401, the first reduction motor 401 drives the second output shaft 402 to rotate, the second output shaft 402 drives the outer ring of the slewing bearing 403 to rotate through the gear, the slewing bearing 403 drives the argon arc welding gun 504 to rotate through the second mounting plate 501, relative to the welding device, the pipe 12 and the bellows 13 are fixed, at this time the argon arc welding gun 504 extends the pipe 12 and the bellows 13 to rotate one circle clockwise for welding, and then rotates one circle counterclockwise for re-welding, and at the same time, it is convenient to reset the welding mechanism 5 and avoid cable entanglement, so as to complete the welding of the welding portion 14 at the pipe 12 and the bellows 13; For the above structure and process, please refer to Figure 7-8 and Fig. 20 .

[0071] After welding is completed, the connecting pipe 12 and the corrugated pipe 13 at the fixing mechanism 6 are taken down by the third transport mechanism 8 and placed on the second conveyor 10 , and the welded connecting pipe 12 and the corrugated pipe 13 are unloaded by the second conveyor 10 .

[0072] For the above structure and process, please refer to Figure 1 and Fig. 20 .

[0073] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic welding device for connecting a metal bellows to a pipe, comprising a mounting frame (1), characterized in that: A loading mechanism (2) is fixedly mounted on the upper surface of the mounting frame (1); a first conveying mechanism (3) is fixedly mounted on the upper surface of the mounting frame (1); the first conveying mechanism (3) is located on the outer side of the loading mechanism (2); a rotating mechanism (4) is fixedly mounted on the upper surface of the mounting frame (1); the rotating mechanism (4) is located on the other side of the first conveying mechanism (3); a welding mechanism (5) is fixedly mounted on the output end of the rotating mechanism (4); a fixing mechanism (6) is fixedly mounted on the top of the rotating mechanism (4); the welding mechanism (5) is located on the outer side of the fixing mechanism (6); a second conveying mechanism (7) is fixedly mounted on the upper surface of the mounting frame (1); a first conveyor (9) is arranged on one side of the second conveying mechanism (7); a third conveying mechanism (8) is fixedly mounted on the upper surface of the mounting frame (1); the third conveying mechanism (8) corresponds to the second conveying mechanism (7); a second conveyor (10) is arranged on one side of the third conveying mechanism (8); and a main controller (11) is fixedly mounted on the outer wall of the mounting frame (1); The fixing mechanism (6) comprises a second cylinder (604), the output end of the second cylinder (604) is fixedly connected to an upper positioning mechanism (605), the upper positioning mechanism (605) comprises an upper base plate (6051), the upper surface of the upper base plate (6051) is fixedly connected to a guide rod (6052), the top end of the guide rod (6052) is fixedly connected to a fixing seat (6055), the outer wall of the guide rod (6052) is slidably connected to a sliding seat (6054), the outer wall of the sliding seat (6054) is movably connected to a second swinging rod (6057), and the other end of the second swinging rod (6057) is fixedly connected to an inner clamping plate (6055). 8), the side wall of the second swing rod (6057) is movably connected to the first swing rod (6056), the other end of the first swing rod (6056) is movably connected to the fixed seat (6055), the outer wall of the upper base plate (6051) is fixedly installed with a third cylinder (6053), the output end of the third cylinder (6053) is fixedly connected to the sliding seat (6054), the inner clamping plate (6058), the second swing rod (6057), and the first swing rod (6056) are all four, and the four inner clamping plates (6058), the second swing rod (6057), and the first swing rod (6056) are equidistantly arranged along the center of the guide rod (6052); The inner clamping plate (6058) comprises an inner clamping block (60581), the inner wall of the inner clamping block (60581) is provided with a groove (60582), a second spring (60583) is arranged inside the groove (60582), the inner clamping block (60581) is located in the groove (60582) and is slidably sleeved with a convex head (60584), there are multiple convex heads (60584), and the convex heads (60584) match the wave crests of the corrugated pipe.

2. The automatic welding device for connecting a metal bellows to a pipe according to claim 1, characterized in that: The feeding mechanism (2) comprises a fixing frame (201), the fixing frame (201) being fixedly mounted on the lower surface of the mounting frame (1), a stepping motor (202) being fixedly mounted on the outer wall of the fixing frame (201), an output end of the stepping motor (202) being fixedly connected to a first output shaft (203), the other end of the first output shaft (203) being fixedly connected to a housing (204), the other end of the housing (204) passing through and extending to the upper surface of the mounting frame (1), a rotating disk (205) being fixedly connected to the extended end of the housing (204), and both sides of the upper surface of the rotating disk (205) being fixedly connected to sleeve rods (206).

3. The automatic welding device for connecting a metal bellows to a pipe according to claim 2, characterized in that: A first cylinder (212) is fixedly mounted on the inner wall of the housing (204); a push block (211) is fixedly connected to the output end of the first cylinder (212); the other end of the push block (211) penetrates and extends to the upper surface of the rotating disk (205); limiting plates (207) are arranged on both sides of the push block (211); a movable block (208) is slidably sleeved on the outer wall of the limiting plate (207); a side of the movable block (208) close to the push block (211) contacts the outer wall of the push block (211); a push plate (209) is fixedly connected to the other side of the movable block (208); a spring resistor (210) is fixedly mounted on the outer wall of the limiting plate (207); the other end of the spring resistor (210) is fixedly connected to the outer wall of the movable block (208); The spring resistor (210) comprises a sleeve (2101), a first spring (2102) is arranged inside the sleeve (2101), a telescopic rod (2103) is slidably sleeved on one end of the sleeve (2101), and the first spring (2102) is in contact with one end of the telescopic rod (2103).

4. The automatic welding device for connecting a metal bellows to a pipe according to claim 1, characterized in that: The first transport mechanism (3) comprises a first support frame (301), the first support frame (301) is fixedly mounted on the upper surface of the mounting frame (1), a first linear motor (302) is fixedly mounted on the outer wall of the first support frame (301), an output end of the first linear motor (302) is fixedly connected to a rotary cylinder (303), an output end of the rotary cylinder (303) is fixedly connected to a first mounting plate (304), and a first pneumatic finger (305) is fixedly mounted on the outer wall on the other side of the first mounting plate (304).

5. The automatic welding device for connecting a metal bellows to a pipe according to claim 1, characterized in that: The rotating mechanism (4) comprises a first reduction motor (401), the first reduction motor (401) is located inside the mounting frame (1), the output end of the first reduction motor (401) is fixedly connected to a second output shaft (402), a slewing bearing (403) is fixedly mounted on the upper surface of the mounting frame (1), the outer wall of the mounting frame (1) is fixedly connected to the inner ring of the slewing bearing (403), the other end of the second output shaft (402) is fixedly sleeved with a gear, the gear and the outer ring teeth of the slewing bearing (403) are meshed with each other, and the welding mechanism (5) is fixedly mounted on the outer ring of the slewing bearing (403).

6. The automatic welding device for connecting a metal bellows to a pipe according to claim 5, characterized in that: The welding mechanism (5) comprises a second mounting plate (501), a second linear motor (502) being fixedly mounted on an outer wall of the second mounting plate (501), an output end of the second linear motor (502) being fixedly connected to a third linear motor (503), the second linear motor (502) and the third linear motor (503) being arranged vertically, and an output end of the third linear motor (503) being fixedly connected to a argon arc welding gun (504).

7. The automatic welding device for connecting a metal bellows to a pipe according to claim 5, characterized in that: The fixing mechanism (6) further comprises a lower base plate (601), the lower base plate (601) being fixedly connected to the inner ring of the slewing bearing (403), a support column (602) being fixedly connected to the upper surface of the lower base plate (601), the other end of the support column (602) being fixedly connected to the lower positioning mechanism (603), and the second cylinder (604) being mounted in the middle of the upper surface of the lower positioning mechanism (603).

8. The automatic welding device for connecting a metal bellows to a pipe according to claim 7, characterized in that: The lower positioning mechanism (603) comprises a circular shell (6031), a second reduction motor (6032) is fixedly mounted on the outer wall of the circular shell (6031), an output end of the second reduction motor (6032) is fixedly connected to a third output shaft (6033), the other end of the third output shaft (6033) passes through and extends into the interior of the circular shell (6031), a gear ring (6034) is sleeved inside the circular shell (6031), the third output shaft (6033) is transmission-connected to the gear ring (6034) via a gear, and the inner wall of the circular shell (6031) is rotationally connected to a transmission shaft (6035), the bottom of the transmission shaft (6035) is connected to the gear ring (6034) through a gear, the top of the transmission shaft (6035) is connected to a rack (6036) through a gear transmission, the outer wall of the rack (6036) is fixedly connected to a positioning clamp (6037), the positioning clamp (6037) is in four groups, and the four groups of positioning clamps (6037) are arranged equidistantly along the center of the circular shell (6031), the upper surface of the circular shell (6031) is fixedly connected to a cover plate (6038) through screws, and the second cylinder (604) is fixedly mounted on the outer wall of the cover plate (6038); The positioning clamp (6037) includes a movable plate (60371), the outer wall of the movable plate (60371) is fixedly connected to an adjustment block (60372), the outer wall of the adjustment block (60372) is slidably connected to a slide rod (60373), the adjustment block (60372) and the slide rod (60373) are fixed by screws, one end of the slide rod (60373) is fixedly connected to an outer clamping plate (60374), and the inner wall of the cover plate (6038) is provided with a slide groove (60381) matching the movable plate (60371), and the movable plate (60371) extends to the outside of the cover plate (6038) through the slide groove (60381).

9. The automatic welding device for connecting a metal bellows to a pipe according to claim 1, characterized in that: The second transport mechanism (7) comprises a third mounting plate (701), the third mounting plate (701) being fixedly mounted on the upper surface of the mounting frame (1), a fourth cylinder (702) being fixedly mounted on the upper surface of the third mounting plate (701), an output end of the fourth cylinder (702) being fixedly connected to a second support frame (703), the second support frame (703) being slidably connected to the third mounting plate (701), a fifth cylinder (704) being fixedly mounted on the top outer wall of the second support frame (703), an output end of the fifth cylinder (704) being fixedly connected to a connecting plate (705), and a second pneumatic finger (706) being fixedly mounted on the lower surface of the connecting plate (705); the second transport mechanism (7) has the same structure as the third transport mechanism (8).

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