Steel pipe laser welding device

Abstract

The invention discloses a steel pipe laser welding device, and relates to the technical field of steel pipe welding, the steel pipe laser welding device comprises an operation table, a base is fixedly mounted at the top of the operation table, a laser beam welding head is arranged at the top of the base, and a first driving device is arranged at the top of the base; the two guide rails are fixedly installed on the top of the base and the top of the first driving device, the two sliding plates are slidably installed on the inner walls of the guide rails, second driving devices are arranged in the sliding plates, the first rotating shaft is rotatably installed on the surface of one sliding plate, and the servo motor is fixedly installed on the surface of the other sliding plate. The second rotating shaft is fixedly installed at the output end of the servo motor, and the two welding tables are fixedly installed on the faces, close to each other, of the first rotating shaft and the second rotating shaft, so that the two welding tables are in butt joint with each other, steel pipes at the tops of the welding tables are driven to be in butt joint, self-locking is completed after butt joint is completed, and the welding effect is prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe welding, and specifically to a laser welding device for steel pipes. Background Art

[0002] A laser welding device for steel pipes is a welding equipment that uses a laser beam to concentrate on the end of a steel pipe, causing the end of the steel pipe to melt and welding two sections of steel pipes; it is widely used in high-precision and high-efficiency welding operations, especially in fields where high requirements are placed on the connection and welding quality of steel pipes.

[0003] The patent with the patent announcement number CN216325977U relates to a weld welding device for welding steel pipes, belonging to the technical field of welding devices. This patent includes a welding machine body, a bottom plate is fixedly fitted on one side of the welding machine body, two support plates are fixedly fitted on the upper side of the bottom plate, a circular ring is fixedly fitted on one side of the support plates, groove channels are opened on the opposite sides of the two circular rings, a track car is slidably fitted in the groove channels, a notch is opened on one side of the track car, a welding torch is fixedly fitted in the notch, and arc-shaped plates are fixedly fitted on the two opposite sides of the track car; a hose is connected to one side of the welding torch. By installing a track car on the circular ring and a welding torch on the track car, this patent enables the steel pipe welding device to weld a circle of the steel pipe gap without rotating the steel pipe, greatly reducing the poor welding quality caused by the vibration generated when the steel pipe rotates, thereby reducing the waste of production materials caused by such situations.

[0004] In the above patent, by installing a track car on the circular ring and a laser beam welding torch on the track car, the steel pipe welding device can weld a circle of the steel pipe gap without rotating the steel pipe, greatly reducing the poor welding quality caused by the vibration generated when the steel pipe rotates. However, before laser beam welding two sections of steel pipes, it is necessary to butt the two sections of steel pipes and ensure that the ends where the steel pipes are connected to each other during laser beam welding need to be kept level, otherwise it will affect the strength and hardness of the steel pipe after welding and lead to affecting normal use. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a laser welding device for steel pipes, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A laser welding device for steel pipes, including an operating table, a base is fixedly installed on the top of the operating table, a laser beam welding head is arranged on the top of the base, and a butting device is arranged on the top of the base; The docking device includes: a first driving device, two guide rails, two sliding plates, a first rotating shaft, two welding platforms, a servo motor, a second rotating shaft, a locking tongue, a limiting triangle, and a lock core. The first driving device is arranged on the top of the base. Both of the two guide rails are fixedly installed on the top of the base and the first driving device. Both of the two sliding plates are slidably installed on the inner walls of the guide rails. A second driving device is arranged inside the sliding plate. The first rotating shaft is rotatably installed on the surface of one of the sliding plates. The servo motor is fixedly installed on the surface of the other sliding plate. The second rotating shaft is fixedly installed at the output end of the servo motor. Both of the two welding platforms are fixedly installed on the sides of the first rotating shaft and the second rotating shaft close to each other. The locking tongue is fixedly installed at the bottom of one of the welding platforms. A receiving groove is formed on the surface of the locking tongue. The limiting triangle is slidably installed on the inner wall of the receiving groove. The lock core is fixedly installed at the bottom of the other welding platform. After the limiting triangle no longer contacts the lock core, the first spring drives the limiting triangle to move away from the receiving groove. After the limiting triangle moves, it will be limited by the lock core, so that the limiting triangle can no longer move continuously. Wherein, a clamping device for positioning the steel pipe and an inner support device for supporting the steel pipe are arranged on the top of the base.

[0007] According to the above technical solution, the docking device further includes: a concave block, a circular telescopic rod, a backing plate, an unlocking block, a first transmission block, a second transmission block, a connecting rod, and a sliding convex block. The concave block is fixedly installed on the top of the base. The circular telescopic rod is fixedly installed on the top of the base. The backing plate is fixedly installed on the top of the free end of the circular telescopic rod. The unlocking block is slidably installed on the top of the concave block. The first transmission block is fixedly installed at the bottom of the unlocking block. A chute is formed at the bottom of the first transmission block. The sliding convex block is slidably installed on the inner wall of the chute. The second transmission block is fixedly installed at the bottom of the sliding convex block. One end of the connecting rod is fixedly installed at the bottom of the backing plate. The other end of the connecting rod is fixedly installed at the bottom of the second transmission block. When the unlocking block moves, it will contact the limiting triangle. When the unlocking block moves, it will drive the limiting triangle to move into the receiving groove. After the limiting triangle moves, it is no longer limited by the lock core.

[0008] According to the above technical solution, a first spring is arranged between the receiving groove and the limiting triangle. The limiting triangle contacts the lock core, and the first spring drives the limiting triangle to reset.

[0009] According to the above technical solution, the clamping device includes: a fixed seat, a fixed ring, a fixed shaft, a rotating rod, a rotating ring and an elastic telescopic rod. The fixed seat is fixedly installed on the top of the welding table. The fixed ring is fixedly installed on the top of the fixed seat. The fixed shaft is fixedly installed on the mutually approaching surfaces of the fixed ring. A limiting groove is provided on the circumferential surface of the fixed shaft. The rotating rod is rotatably installed on the circumferential surface of the fixed shaft. The rotating ring is rotatably installed on the surface of the rotating rod away from the fixed ring. The elastic telescopic rod is slidably installed on the top of the fixed seat. A driving device three is arranged inside the elastic telescopic rod. The free end of the elastic telescopic rod is rotatably installed on the surface of the rotating ring, which can fix steel pipes with different diameters and make the arc-shaped clamping rod closely fit the steel pipe to reduce the shaking of the steel pipe during rotation, improving the stability of the device during welding.

[0010] According to the above technical solution, the clamping device further includes: an embedded rod, an arc-shaped clamping rod and a limiting square block. The embedded rod is slidably installed inside the rotating rod. The arc-shaped clamping rod is rotatably installed at one end of the embedded rod away from the fixed shaft. The limiting square block is fixedly installed at one end of the embedded rod away from the arc-shaped clamping rod. After the arc-shaped clamping rod contacts the steel pipe, the movement of the arc-shaped clamping rod drives the embedded rod to move away from the steel pipe. The movement of the embedded rod drives the limiting square block to move towards the fixed shaft, and the movement of the limiting square block will contact the limiting groove.

[0011] According to the above technical solution, a second spring is arranged between the embedded rod and the rotating rod. The limiting square block contacts the limiting hole, and the embedded rod is reset by the second spring.

[0012] According to the above technical solution, the inner support device includes: a support plate, a reset telescopic rod, a lifting plate, a support arc rod, a square telescopic rod, a transmission triangle, a transmission long rod and a rubber clamping block. The support plate is slidably installed on the top of the welding table. The reset telescopic rod is fixedly installed on the top of the support plate. The lifting plate is fixedly installed on the top of the reset telescopic rod. The support arc rod is fixedly installed on the top of the lifting plate. The square telescopic rod is slidably installed on the top of the fixed seat. A reset block is fixedly installed on the top of the fixed seat. The free end of the reset square telescopic rod is rotatably installed on the circumferential surface of the rotating ring. The transmission triangle is fixedly installed at the fixed end of the square telescopic rod. The transmission long rod is fixedly installed on the top of the support plate. The rubber clamping block is fixedly installed on the top of the support arc rod. The movement of the support arc rod drives the rubber clamping block to move upwards. The movement of the rubber clamping block will contact the steel pipe. Since the steel pipe and the rubber clamping block rotate simultaneously and maintain relative static.

[0013] According to the above technical solution, the transmission triangle contacts the transmission long rod. A reset spring is arranged inside the square telescopic rod, and the free end of the square telescopic rod is reset by the reset spring.

[0014] The present invention provides a steel pipe laser welding device. It has the following beneficial effects: (1) In this invention, after the limiting triangle moves, it will be limited by the lock core, so that the limiting triangle can no longer move continuously, enabling the two welding tables to be butted against each other and driving the steel pipes on the tops of the welding tables to be butted. After the butting is completed, self-locking is achieved to prevent gaps from generating between the steel pipes during welding, thus affecting the welding effect. By moving the unlocking block, the limiting triangle will be driven to move into the receiving groove. After the limiting triangle moves, it is no longer limited by the lock core, so that after welding is completed, the device will automatically release the limit without manual operation, improving the automation degree and working efficiency of the device.

[0015] (2) In this invention, after the arc-shaped clamping rod contacts the steel pipe, it will fit with the steel pipe through its own rotation, can be fixed according to steel pipes of different diameters, and makes the arc-shaped clamping rod fit tightly with the steel pipe to reduce the shaking of the steel pipe during rotation, improving the stability of the device during welding. By moving the embedded rod, the limiting square block is driven to move towards the fixed shaft. When the limiting square block moves, it will contact the limiting groove, making the limiting square block no longer able to rotate continuously, preventing the rotating rod from reversing due to gravity or centrifugal force during the rotation of the steel pipe, resulting in the positioning failure of the steel pipe, and improving the applicability of the device.

[0016] (3) In this invention, the reset spring resets to drive the lifting plate to move upwards. The movement of the lifting plate will drive the supporting arc rod to move upwards. The movement of the supporting arc rod will support the steel pipe, preventing the mutually approaching ends from tilting outwards due to gravity after the two ends of the steel pipe are fixed, preventing the device from being damaged after long-term use, and improving the service life of the device. By moving the supporting arc rod, the rubber clamping block is driven to move upwards. When the rubber clamping block moves, it will contact the steel pipe. Since the steel pipe and the rubber clamping block rotate simultaneously and maintain relative static, the frictional force generated after the rubber clamping block contacts the steel pipe will prevent the steel pipe from reversing due to adhesion caused by the laser beam welding head during welding, improving the welding accuracy. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the base of the present invention; Figure 3 It is a schematic sectional view of the lock tongue of the present invention; Figure 4 It is a schematic diagram of the docking device structure of the present invention; Figure 5 It is a schematic sectional view of the unlocking block of the present invention; Figure 6 It is a schematic diagram of the fixing device structure of the present invention; Figure 7 It is a schematic sectional view of the rotating rod of the present invention; Figure 8 This is a schematic structural diagram of the support device of the present invention.

[0018] In the figure: 1, operating table; 2, base; 3, laser beam welding head; 41, driving device 1; 42, guide rail; 43, sliding plate; 44, rotating shaft 1; 45, welding table; 46, servo motor; 47, rotating shaft 2; 48, locking tongue; 49, limiting triangle; 410, lock core; 411, concave block; 412, circular telescopic rod; 413, backing plate; 414, unlocking block; 415, first spring; 416, transmission block 1; 417, transmission block 2; 418, connecting rod; 419, sliding convex block; 51, fixed seat; 52, fixed ring; 53, fixed shaft; 54, rotating rod; 55, rotating ring; 56, elastic telescopic rod; 57, embedded rod; 58, arc-shaped clamping rod; 59, limiting square; 61, support plate; 62, reset telescopic rod; 63, lifting plate; 64, support arc rod; 65, square telescopic rod; 66, transmission triangle; 67, transmission long rod; 68, rubber clamping block; 69, reset block. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 - Figure 5 In one embodiment of the present invention: a steel pipe laser welding device includes an operating table 1, a base 2 is fixedly installed on the top of the operating table 1, a laser beam welding head 3 is arranged on the top of the base 2, and a docking device is arranged on the top of the base 2; The docking device includes: a first driving device 41, two guide rails 42, two sliding plates 43, a first rotating shaft 44, two welding platforms 45, a servo motor 46, a second rotating shaft 47, a lock tongue 48, a limiting triangle 49, and a lock core 410. The first driving device 41 is arranged on the top of the base 2. The two guide rails 42 are both fixedly installed on the top of the base 2 and the first driving device 41. The two sliding plates 43 are both slidably installed on the inner walls of the guide rails 42. A second driving device is arranged inside the sliding plate 43. The first rotating shaft 44 is rotatably installed on the surface of one of the sliding plates 43. The servo motor 46 is fixedly installed on the surface of the other sliding plate 43. The second rotating shaft 47 is fixedly installed at the output end of the servo motor 46. The two welding platforms 45 are both fixedly installed on the sides where the first rotating shaft 44 and the second rotating shaft 47 are close to each other. The lock tongue 48 is fixedly installed at the bottom of one of the welding platforms 45. A receiving groove is formed on the surface of the lock tongue 48. The limiting triangle 49 is slidably installed on the inner wall of the receiving groove. The lock core 410 is fixedly installed at the bottom of the other welding platform 45, so that the two welding platforms 45 are docked with each other, and the steel pipes on the tops of the welding platforms 45 are driven to be docked. After the docking is completed, self-locking is achieved to prevent gaps from being generated between the steel pipes during laser welding, thus affecting the welding effect.

[0021] The docking device further includes: a concave block 411, a circular telescopic rod 412, a backing plate 413, an unlocking block 414, a first transmission block 416, a second transmission block 417, a connecting rod 418, and a sliding convex block 419. The concave block 411 is fixedly installed on the top of the base 2. The circular telescopic rod 412 is fixedly installed on the top of the base 2. The backing plate 413 is fixedly installed on the top of the free end of the circular telescopic rod 412. The unlocking block 414 is slidably installed on the top of the concave block 411. The first transmission block 416 is fixedly installed at the bottom of the unlocking block 414. A chute is formed at the bottom of the first transmission block 416. The sliding convex block 419 is slidably installed on the inner wall of the chute. The second transmission block 417 is fixedly installed at the bottom of the sliding convex block 419. One end of the connecting rod 418 is fixedly installed at the bottom of the backing plate 413, and the other end of the connecting rod 418 is fixedly installed at the bottom of the second transmission block 417, so that after the laser welding is completed, the device will automatically release the limit without manual operation, improving the automation degree and working efficiency of the device.

[0022] A first spring 415 is arranged between the receiving groove and the limiting triangle 49. The limiting triangle 49 contacts the lock core 410, and the first spring 415 drives the limiting triangle 49 to reset.

[0023] During the operation of this embodiment: Start the first driving device 41. The movement of the first driving device 41 drives the guide rail 42 to move in the direction of approaching each other. The movement of the guide rail 42 drives one of the sliding plates 43 to move in the direction of approaching each other. The movement of the sliding plate 43 drives the first rotating shaft 44 to move towards the other sliding plate 43. The movement of the first rotating shaft 44 drives the welding table 45 to move in the direction of approaching each other. The movement of the welding table 45 drives the lock tongue 48 to move towards the other sliding plate 43. The movement of the lock tongue 48 drives the limiting triangle 49 to move towards the lock core 410. The movement of the limiting triangle 49 will contact the lock core 410. Blocked by the lock core 410, the limiting triangle 49 moves into the interior of the receiving groove. As the lock tongue 48 continues to move, after the limiting triangle 49 no longer contacts the lock core 410, the reset of the first spring 415 drives the limiting triangle 49 to move away from the receiving groove. After the limiting triangle 49 moves, it will be limited by the lock core 410, making the limiting triangle 49 no longer able to move further, causing the two welding tables 45 to be butted against each other and driving the steel pipes on the tops of the welding tables 45 to be butted. After the butting is completed, self-locking is achieved to prevent gaps from occurring between the steel pipes during welding, thereby affecting the welding effect. After the laser welding is completed, the second driving device drives the sliding plate 43 to move downward. The movement of the sliding plate 43 drives the lock core 410 to move downward. The movement of the lock core 410 will contact the backing plate 413. The movement of the lock core 410 drives the backing plate 413 to move downward. The movement of the backing plate 413 drives the connecting rod 418 to move downward. The movement of the connecting rod 418 will drive the second transmission block 417 to move downward. The movement of the second transmission block 417 will drive the sliding convex block 419 to move inside the chute. Due to the inclined surface design of the chute, the movement of the sliding convex block 419 drives the first transmission block 416 to move towards the circular telescopic rod 412. The movement of the first transmission block 416 drives the unlocking block 414 to move towards the lock core 410. The movement of the unlocking block 414 will contact the limiting triangle 49. The movement of the unlocking block 414 will drive the limiting triangle 49 to move into the interior of the receiving groove. After the limiting triangle 49 moves, it is no longer limited by the lock core 410, so that after the laser welding is completed, the device will automatically release the limit without manual operation, improving the automation degree and working efficiency of the device.

[0024] Please refer to Figure 1 - Figure 8, on the basis of the above embodiments, in another embodiment of the present invention, a clamping device for positioning the steel pipe and an inner support device for supporting the steel pipe are provided on the top of the base 2. Among them, the clamping device includes: a fixed seat 51, a fixed ring 52, a fixed shaft 53, a rotating rod 54, a rotating ring 55 and an elastic telescopic rod 56. The fixed seat 51 is fixedly installed on the top of the welding table 45, the fixed ring 52 is fixedly installed on the top of the fixed seat 51, the fixed shaft 53 is fixedly installed on the mutually adjacent surface of the fixed ring 52, a limiting groove is provided on the circumferential surface of the fixed shaft 53, the rotating rod 54 is rotatably installed on the circumferential surface of the fixed shaft 53, the rotating ring 55 is rotatably installed on the surface of the rotating rod 54 away from the fixed ring 52, the elastic telescopic rod 56 is slidably installed on the top of the fixed seat 51, a driving device three is arranged inside the elastic telescopic rod 56, and the free end of the elastic telescopic rod 56 is rotatably installed on the surface of the rotating ring 55. It can be fixed according to steel pipes of different diameters, and the arc-shaped clamping rod 58 is closely attached to the steel pipe to reduce the shaking of the steel pipe during rotation, and improve the stability of the device during laser welding.

[0025] The clamping device further includes: an embedded rod 57, an arc-shaped clamping rod 58 and a limiting square block 59. The embedded rod 57 is slidably installed inside the rotating rod 54, the arc-shaped clamping rod 58 is rotatably installed at one end of the embedded rod 57 away from the fixed shaft 53, and the limiting square block 59 is fixedly installed at one end of the embedded rod 57 away from the arc-shaped clamping rod 58, so that the limiting square block 59 can no longer rotate, preventing the rotating rod 54 from reversing due to gravity or centrifugal force during the rotation of the steel pipe, resulting in the failure of the positioning of the steel pipe, and improving the applicability of the device.

[0026] A second spring is arranged between the embedded rod 57 and the rotating rod 54, and the limiting square block 59 contacts the limiting hole, and the embedded rod 57 is reset by the second spring.

[0027] The inner support device includes: a support plate 61, a reset telescopic rod 62, a lifting plate 63, a support arc rod 64, a square telescopic rod 65, a transmission triangle 66, a transmission long rod 67, and a rubber clamping block 68. The support plate 61 is slidably installed on the top of the welding table 45. The reset telescopic rod 62 is fixedly installed on the top of the support plate 61. The lifting plate 63 is fixedly installed on the top of the reset telescopic rod 62. The support arc rod 64 is fixedly installed on the top of the lifting plate 63. The square telescopic rod 65 is slidably installed on the top of the fixed seat 51. A reset block 69 is fixedly installed on the top of the fixed seat 51. The free end of the reset square telescopic rod 65 is rotatably installed on the circumferential surface of the rotating ring 55. The transmission triangle 66 is fixedly installed at the fixed end of the square telescopic rod 65. The transmission long rod 67 is fixedly installed on the top of the support plate 61. After the two ends of the steel pipe are fixed, the mutually approaching ends may be inclined outward to the bottom due to gravity, which can be prevented. Long-term use may cause damage to the device, and the service life of the device is improved. The rubber clamping block 68 is fixedly installed on the top of the support arc rod 64. The friction generated after the rubber clamping block 68 contacts the steel pipe can prevent the steel pipe from reversing due to adhesion during laser welding by the laser beam welding head 3, improving the accuracy of laser welding.

[0028] The transmission triangle 66 contacts the transmission long rod 67. A reset spring is arranged inside the square telescopic rod 65, and the free end of the square telescopic rod 65 is reset by the reset spring.

[0029] During the operation of this embodiment: Place the steel pipe inside the inner diameter of the fixed ring 52, and then start the third driving device. Starting the third device drives the elastic telescopic rod 56 to move. The movement of the elastic telescopic rod 56 drives the rotating ring 55 to rotate. The rotation of the rotating ring 55 drives the rotating rod 54 to rotate. The rotation of the rotating rod 54 drives the embedded rod 57 to rotate. The rotation of the embedded rod 57 drives the arc-shaped clamping rod 58 to rotate. The rotation of the arc-shaped clamping rod 58 contacts the steel pipe. After the arc-shaped clamping rod 58 contacts the steel pipe, it will fit with the steel pipe through its own rotation. It can be fixed according to steel pipes of different diameters, and the arc-shaped clamping rod 58 is closely attached to the steel pipe to reduce the shaking of the steel pipe during rotation, improving the stability of the device during welding. The rotation of the output end of the servo motor 46 drives the second rotating shaft 47 to rotate. The rotation of the second rotating shaft 47 drives the welding table 45 to rotate. The rotation of the welding table 45 drives the fixed seat 51 to rotate. The rotation of the fixed seat 51 drives the fixed ring 52 to rotate. The rotation of the fixed ring 52 drives the fixed shaft 53 to rotate. The rotation of the fixed shaft 53 drives the rotating rod 54 to rotate. The rotation of the rotating rod 54 drives the embedded rod 57 to rotate. The rotation of the embedded rod 57 drives the arc-shaped clamping rod 58 to rotate. The rotation of the arc-shaped clamping rod 58 drives the steel pipe to rotate. After the arc-shaped clamping rod 58 contacts the steel pipe, the movement of the arc-shaped clamping rod 58 drives the embedded rod 57 to move away from the steel pipe. The movement of the embedded rod 57 drives the limit square 59 to move towards the fixed shaft 53. The movement of the limit square 59 contacts the limit groove, preventing the limit square 59 from continuing to rotate, and preventing the rotating rod 54 from reversing due to gravity or centrifugal force during the rotation of the steel pipe, resulting in the positioning failure of the steel pipe and improving the practicability of the device.

[0030] The rotation of the rotating ring 55 drives the square telescopic rod 65 to move towards the elastic telescopic rod 56. The movement of the square telescopic rod 65 drives the transmission triangle 66 to move towards the elastic telescopic rod 56. The movement of the transmission triangle 66 drives the transmission long rod 67 to move away from the fixed seat 51. The movement of the transmission long rod 67 drives the support plate 61 to move away from the fixed seat 51. The movement of the support plate 61 drives the reset telescopic rod 62 to move. The movement of the reset telescopic rod 62 drives the lifting plate 63 to move. After the lifting plate 63 moves, it no longer contacts the reset block 69, causing the reset spring to drive the lifting plate 63 to move upwards. The movement of the lifting plate 63 drives the support arc rod 64 to move upwards. The movement of the support arc rod 64 supports the steel pipe, preventing the ends of the steel pipe from tilting outwards due to gravity after being fixed at both ends, preventing the device from being damaged after long-term use, and improving the service life of the device. The movement of the support arc rod 64 drives the rubber clamping block 68 to move upwards. The movement of the rubber clamping block 68 contacts the steel pipe. Since the steel pipe and the rubber clamping block 68 rotate relatively statically, the frictional force generated after the rubber clamping block 68 contacts the steel pipe prevents the steel pipe from reversing due to adhesion during the welding of the laser beam welding head 3, improving the accuracy of laser welding.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and permutations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel pipe laser welding device, comprising an operating table, characterized in that: A base is fixedly installed on the top of the operating table, a laser beam welding head is arranged on the top of the base, and a docking device is arranged on the top of the base; The docking device comprises: a driving device 1, two guide rails, two sliding plates, a rotating shaft 1, two welding tables, a servo motor, a rotating shaft 2, a locking tongue, a limiting triangle and a lock core, wherein the driving device 1 is arranged on the top of the base, the two guide rails are fixedly mounted on the top of the base and the driving device 1, the two sliding plates are slidably mounted on the inner wall of the guide rail, the sliding plate is provided with a driving device 2 inside, the rotating shaft 1 is rotatably mounted on the surface of one of the sliding plates, the servo motor is fixedly mounted on the surface of the other sliding plate, the rotating shaft 2 is fixedly mounted on the output end of the servo motor, the two welding tables are fixedly mounted on the side where the rotating shaft 1 and the rotating shaft 2 are close to each other, the locking tongue is fixedly mounted on the bottom of one of the welding tables, a receiving groove is provided on the surface of the locking tongue, the limiting triangle is slidably mounted on the inner wall of the receiving groove, and the lock core is fixedly mounted on the bottom of the other welding table; Wherein, a clamping device for positioning the steel pipe and an inner supporting device for supporting the steel pipe are arranged on the top of the base.

2. A steel pipe laser welding device according to claim 1, characterized in that: The docking device also includes: a concave block, a circular telescopic rod, a pad, an unlocking block, a transmission block 1, a transmission block 2, a connecting rod and a sliding protrusion, the concave block is fixedly mounted on the top of the base, the circular telescopic rod is fixedly mounted on the top of the base, the pad is fixedly mounted on the top of the free end of the circular telescopic rod, the unlocking block is slidably mounted on the top of the concave block, the transmission block 1 is fixedly mounted on the bottom of the unlocking block, a sliding groove is provided at the bottom of the transmission block 1, the sliding protrusion is slidably mounted on the inner wall of the sliding groove, the transmission block 2 is fixedly mounted on the bottom of the sliding protrusion, one end of the connecting rod is fixedly mounted on the bottom of the pad, and the other end of the connecting rod is fixedly mounted on the bottom of the transmission block 2.

3. A steel pipe laser welding device according to claim 2, characterized in that: A No. 1 spring is arranged between the receiving groove and the limiting triangle, and the limiting triangle is in contact with the lock core.

4. A steel pipe laser welding device according to claim 3, characterized in that: The clamping device includes: a fixed seat, a fixed ring, a fixed shaft, a rotating rod, a rotating ring and an elastic telescopic rod, the fixed seat is fixedly installed on the top of the welding table, the fixed ring is fixedly installed on the top of the fixed seat, the fixed shaft is fixedly installed on the side of the fixed rings that are close to each other, the circumferential surface of the fixed shaft is provided with a limiting groove, the rotating rod is rotatably installed on the circumferential surface of the fixed shaft, the rotating ring is rotatably installed on the side of the rotating rod away from the fixed ring, the elastic telescopic rod is slidably installed on the top of the fixed seat, a driving device three is arranged inside the elastic telescopic rod, and the free end of the elastic telescopic rod is rotatably installed on the surface of the rotating ring.

5. A steel pipe laser welding device according to claim 4, characterized in that: The clamping device also includes: an embedded rod, an arc-shaped clamping rod and a limiting block, wherein the embedded rod is slidably installed inside the rotating rod, the arc-shaped clamping rod is rotatably installed at one end of the embedded rod away from the fixed axis, and the limiting block is fixedly installed at one end of the embedded rod away from the arc-shaped clamping rod.

6. A steel pipe laser welding device according to claim 5, characterized in that: A No. 2 spring is arranged between the embedded rod and the rotating rod, and the limiting block is in contact with the limiting hole.

7. A steel pipe laser welding device according to claim 6, characterized in that: The inner support device includes: a support plate, a reset telescopic rod, a lifting plate, a support arc rod, a square telescopic rod, a transmission triangle, a transmission long rod, and a rubber block. The support plate is slidably installed on the top of the welding table, the reset telescopic rod is fixedly installed on the top of the support plate, the lifting plate is fixedly installed on the top of the reset telescopic rod, the support arc rod is fixedly installed on the top of the lifting plate, the square telescopic rod is slidably installed on the top of the fixed seat, the free end of the reset square telescopic rod is rotatably installed on the circumferential surface of the rotating ring, the transmission triangle is fixedly installed on the fixed end of the square telescopic rod, the transmission long rod is fixedly installed on the top of the support plate, the rubber block is fixedly installed on the top of the support arc rod, and the top of the fixed seat is fixedly installed with a reset block.

8. A steel pipe laser welding device according to claim 7, characterized in that: The transmission triangle is in contact with the transmission long rod, and a return spring is arranged inside the square telescopic rod.

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