A multi-angle welding device for galvanized steel pipes based on a rotating station

Abstract

This invention belongs to the field of welding workpiece positioning tooling technology, specifically a multi-angle welding device for galvanized steel pipes based on a rotating station, including a welding base; a welding head is provided on the welding base; by fixing two galvanized steel pipes to the center of a first rotating ring plate, the first rotating ring plate is adjusted and limited after the steel pipe mating surface is closed, and the first electric slide is slid according to the pipe length, and the steel pipe is rotated to the mating end by a second servo motor, and the welding assembly cooperates with the laser head to perform circumferential welding; during welding, the first servo motor drives the steel pipe to rotate, and the laser head is finely adjusted to complete the full circle welding. When welding at a large angle, the two first electric slides are moved away from each other and the angle is adjusted by the second servo motor; when welding at a small angle, the two first electric slides are brought closer together and the angle is adjusted to meet various angle welding requirements. If the mating surface is a beveled surface, the ring plate can be released, the first rotating ring plate can be adjusted to make the beveled surface correspond before being fixed to ensure a neat mating.

Description

Technical Field

[0001] This invention belongs to the field of welding workpiece displacement tooling technology, specifically a multi-angle welding device for galvanized steel pipes based on a rotating station. Background Technology

[0002] Galvanized steel pipe is a composite pipe made by coating a layer of zinc onto the surface of ordinary welded steel pipe through hot-dip galvanizing or electroplating. This zinc layer is the key to its anti-corrosion performance. The hot-dip galvanized layer forms a zinc-iron alloy layer through a complex metallurgical reaction, which is tightly bonded to the substrate and has strong corrosion resistance. In contrast, the electroplated galvanized layer is thinner and has relatively weaker adhesion. With its good anti-corrosion ability and economy, galvanized steel pipe is widely used in the transportation of low-pressure fluids such as water and gas, as well as in many industrial fields such as construction, machinery and power.

[0003] Traditional galvanized steel pipe welding equipment is mainly used for butt welding of two or more galvanized steel pipes. Traditional welding platforms use structures such as top pressure devices, fixing clamps and sliders to clamp and position the pipes to be welded, which can stabilize the pipes and control the butt joint accuracy during welding.

[0004] When welding galvanized steel pipes, traditional galvanized steel pipe welding equipment is usually used for welding two steel pipes at a single angle. For example, after each pair of steel pipes is joined by the welding equipment, they form a 90-degree angle for welding. However, when there are steel pipes that need to be welded at different angles, traditional welding equipment is difficult to adjust the angle to adapt to different welding requirements, which can easily affect the welding effect of galvanized steel pipes.

[0005] Therefore, the present invention provides a multi-angle welding device for galvanized steel pipes based on a rotating station. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A multi-angle welding device for galvanized steel pipes based on a rotating workstation, comprising a welding base; a welding head is provided on the welding base; a welding assembly is provided on the welding base, the welding head is fixed on the welding assembly, and the welding assembly cooperates with the welding head to perform laser welding on the galvanized steel pipe; two support frames are fixedly connected to the welding base; a first motor base is fixedly connected to the two support frames; a first servo motor is fixedly connected to the two first motor bases; a connecting frame is fixedly connected to the output end of the first servo motor, and a sliding groove is provided on the connecting frame; a first electric slide is slidably connected in the sliding groove of the connecting frame, and a second motor base is fixedly connected to the first electric slide; a second servo motor is fixedly connected to the second motor base; a support base is fixedly connected to the output end of the second servo motor; a first rotating ring plate is rotatably connected to the support base; a clamping assembly is provided on the first rotating ring plate, and the clamping assembly is used to fix the steel pipe for docking.

[0008] Preferably, the clamping assembly includes a first fixed frame, a first sliding rod, a trapezoidal block, and a first elastic element; four first fixed frames are fixedly connected to a first rotating ring plate, and the four first fixed frames are located on the inner ring of the first rotating ring plate; the first sliding rod is slidably connected to the first fixed frame; the trapezoidal block is fixedly connected to one end of the first sliding rod, and the side of the trapezoidal block near the first rotating ring plate is provided with an inclined surface; the first elastic element is sleeved on the first sliding rod, and the first elastic element is located between the first fixed frame and the trapezoidal block.

[0009] Preferably, a gear ring plate is fixedly connected to the first rotating ring plate; a third servo motor is fixedly connected to the support base; a gear is fixedly connected to the output end of the third servo motor, and the gear can mesh with the gear ring plate to rotate.

[0010] Preferably, two secondary fixing frames are fixedly connected to the first rotating ring plate, the two secondary fixing frames are arranged opposite each other, and the two secondary fixing frames are located on the inner ring of the first rotating ring plate; an electric cylinder is fixedly connected to the secondary fixing frame; four extension plates are slidably connected to the first rotating ring plate, and two extension plates are respectively fixed to the output ends of two electric cylinders; one end of each extension plate is fixedly connected to a secondary rotating ring plate, and all four extension plates are fixedly connected to the secondary rotating ring plate.

[0011] Preferably, a fixed cylinder is fixedly connected to the side of the support base near the second rotating ring plate; a sliding extension plate is slidably connected inside the fixed cylinder; a fixed ring plate is fixedly connected to the sliding extension plate, and the fixed ring plate is rotatably connected to the second rotating ring plate.

[0012] Preferably, two second sliding rods are slidably connected to the first rotating ring plate; a support plate is fixedly connected to the two second sliding rods, and the support plate has an inclined surface on the side near the second rotating ring plate; a second elastic element is sleeved on the second sliding rod, and the second elastic element is located between the first rotating ring plate and the support plate.

[0013] Preferably, a double-threaded rod is rotatably connected to the second rotating ring plate, and the double-threaded rod has two opposite threads; two mating brackets are threadedly connected to the double-threaded rod; a clamping block is fixedly connected to the end of the mating bracket away from the double-threaded rod, and the clamping block is slidably connected to the second rotating ring plate.

[0014] Preferably, a fourth servo motor is fixedly connected to one of the clamping blocks, and a rotating rod is rotatably connected to the other clamping block via a torsion spring; a first clamping plate is fixedly connected to the output end of the fourth servo motor; a second clamping plate is fixedly connected to the end of the rotating rod away from the clamping block; the cross-sectional shape of both the first and second clamping plates is V-shaped.

[0015] Preferably, the inner walls of the first clamping plate and the second clamping plate are both fixedly connected to a telescopic plate, and the telescopic plate has a third elastic element built in it; a square plate is fixedly connected to the end of the telescopic plate away from the clamping block; two rotating rollers are rotatably connected to the trapezoidal block.

[0016] Preferably, the welding assembly includes a hydraulic cylinder, a top support, and a circuit box; the hydraulic cylinder is fixedly connected to the support frame; the top support is fixedly connected to the output ends of the two hydraulic cylinders; the bottom end of the top support is slidably connected to the circuit box via a second electric slide, and the welding head is slidably connected to the bottom end of the circuit box via a third electric slide.

[0017] The beneficial effects of this invention are as follows: 1. The present invention discloses a multi-angle welding device for galvanized steel pipes based on a rotating station. Two galvanized steel pipes are fixed to the center of a first rotating ring plate. The first rotating ring plate is adjusted and limited after the pipe mating surfaces are aligned. A first electric slide is slid according to the pipe length, and a second servo motor rotates the steel pipe until the mating ends are aligned. A welding assembly, in conjunction with a laser head, performs circumferential welding. During welding, the first servo motor drives the steel pipe to rotate, and the laser head is finely adjusted to complete the full circumference welding. For large-angle welding, the two first electric slides move away from each other, and the angle is adjusted by the second servo motor. For small-angle welding, the two first electric slides move closer together and the angle is adjusted to meet various angle welding requirements. If the mating surface is a bevel, the ring plate can be released, and the first rotating ring plate can be adjusted to align the bevels before fixing, ensuring a neat mating.

[0018] 2. The multi-angle welding device for galvanized steel pipes based on a rotating station described in this invention uses two clamping blocks to drive the V-shaped clamping plates No. 1 and No. 2 to move towards each other. The V-shaped opening is adapted to different pipe diameters, so that the clamping plates are tightly attached to the outer wall of the steel pipe, eliminating gaps, ensuring centered and stable fixing, reducing slippage and offset, and ensuring docking accuracy. If the two ends are difficult to fit together, the No. 4 servo motor drives the No. 1 clamping plate to rotate, and the No. 2 clamping plate rotates synchronously on the clamping block with the rotating rod. The torsion spring is stressed, and the tilt angle of the steel pipe is finely adjusted, so that the docking surfaces fit tightly together, reducing gaps, ensuring welding quality, and reducing the risk of defects. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the support base in this invention; Figure 3 This is a schematic diagram of the structure of the No. 2 servo motor in this invention; Figure 4 This is a schematic diagram of the trapezoidal block structure in this invention; Figure 5 This is a schematic diagram of the electric cylinder in this invention; Figure 6 This is a schematic diagram of the structure of the fixed ring plate in this invention; Figure 7 This is a schematic diagram of the structure of the fourth servo motor in this invention.

[0021] In the diagram: 1. Welding machine base; 11. Welding head; 12. Support frame; 13. Motor base (No. 1); 14. Servo motor (No. 1); 15. Connecting frame; 16. Motor base (No. 2); 17. Servo motor (No. 2); 18. Support base; 19. Rotary ring plate (No. 1); 2. Fixed frame (No. 1); 21. Sliding rod (No. 1); 22. Trapezoidal block; 23. Elastic element (No. 1); 3. Gear ring plate; 31. Servo motor (No. 3); 32. Gear; 4. Fixed frame (No. 2); 41. Electric cylinder; 42. 1. Extension plate; 43. Second rotating ring plate; 5. Fixed cylinder; 51. Sliding extension plate; 52. Fixed ring plate; 6. Second sliding rod; 61. Support plate; 62. First elastic element; 7. Double threaded rod; 71. Matching frame; 72. Clamping block; 8. Fourth servo motor; 81. First clamping plate; 82. Rotating rod; 83. Second clamping plate; 9. Telescopic plate; 91. Square plate; 92. Rotating roller; 93. Hydraulic cylinder; 94. Top bracket; 95. Circuit box. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5 As shown in the embodiment of the present invention, a multi-angle welding device for galvanized steel pipes based on a rotating station includes a welding base 1; a welding head 11 is provided on the welding base 1; a welding assembly is provided on the welding base 1, the welding head 11 is fixed on the welding assembly, and the welding assembly is used to cooperate with the welding head 11 for laser welding of galvanized steel pipes; two support frames 12 are fixedly connected to the welding base 1; a first motor base 13 is fixedly connected to the two support frames 12, and the two first motor bases 13 are arranged opposite to each other; a first servo motor 14 is fixedly connected to the two first motor bases 13; the first servo motor... A connecting frame 15 is fixedly connected to the output end of the 14, and a sliding groove is provided on the connecting frame 15; a first electric slide is slidably connected in the sliding groove of the connecting frame 15, and a second motor base 16 is fixedly connected to the first electric slide; a second servo motor 17 is fixedly connected to the second motor base 16; a support base 18 is fixedly connected to the output end of the second servo motor 17; a first rotating ring plate 19 is rotatably connected to the support base 18; a clamping assembly is provided on the first rotating ring plate 19, and the clamping assembly is used to fix the galvanized steel pipe for butt welding; when the galvanized steel pipe is welded at multiple angles, the two support frames 12 are fixed on the welding machine base 1. Using welding machine base 1 as the support for the welding device, two No. 1 motor bases 13 are respectively fixed on two support frames 12 and arranged opposite each other. The output end of the No. 1 servo motor 14 on the No. 1 motor base 13 is connected to the connecting frame 15. A No. 1 electric slide is slidably connected in the slide groove of the connecting frame 15. When the No. 1 electric slide is energized, it can drive the No. 2 motor base 16 to slide left and right, so that the support base 18 at the output end of the No. 2 servo motor 17 slides synchronously, thereby adjusting the distance between the two galvanized steel pipes. The two galvanized steel pipes are respectively fixed to the center of the No. 1 rotating ring plate 19 by clamping components, and the No. 1 rotating ring plate 19 is rotated to adjust the distance between the two galvanized steel pipes. The galvanized steel pipes are joined together, and then the first rotating plate 19 is fixed and limited. Then, the first electric slide is adjusted according to the length of the galvanized steel pipes. Then, the output ends of the two second servo motors 17 drive the two galvanized steel pipes to rotate until the two galvanized steel pipes are close to each other. The welding components and welding heads 11 are used to laser weld the joint of the two galvanized steel pipes. During the welding process, the output ends of the two first servo motors 14 drive the two galvanized steel pipes to rotate synchronously. During the rotation of the two galvanized steel pipes, the position of the welding head 11 can be finely adjusted to align with the circumferential seam, which can complete the welding operation of the entire circumferential seam. Meanwhile, when welding two galvanized steel pipes at a large angle, the two No. 1 electric slides are controlled to move away from each other, and then the output ends of the two No. 2 servo motors 17 are rotated to adjust the welding angle of the steel pipes; when welding two galvanized steel pipes at a small angle, the two No. 1 electric slides are controlled to move closer to each other, and then the output ends of the two No. 2 servo motors 17 are rotated to adjust the welding angle of the steel pipes; in this way, welding of galvanized steel pipes at different angles can be achieved, adapting to various welding angle requirements and ensuring the adaptability of welding operations and welding results; Furthermore, when the joint surfaces of the two galvanized steel pipes are beveled, in order to make the beveled surfaces of the two galvanized steel pipes fit together more closely, the limiting position of the first rotating plate 19 can be released first, and then the two first rotating plates 19 can be rotated respectively to align the beveled surfaces of the two galvanized steel pipes. After that, the two first rotating plates 19 can be fixed and limited, and then the joint and welding can be carried out to reduce the occurrence of misalignment of the two galvanized steel pipes during the joint.

[0024] The clamping assembly includes a first fixing frame 2, a first sliding rod 21, a trapezoidal block 22, and a first elastic element 23. Four first fixing frames 2 are fixedly connected to a first rotating ring plate 19, and the four first fixing frames 2 are located on the inner ring of the first rotating ring plate 19. The first sliding rod 21 is slidably connected to the first fixing frame 2. The trapezoidal block 22 is fixedly connected to one end of the first sliding rod 21, and the side of the trapezoidal block 22 closest to the first rotating ring plate 19 has an inclined surface. The first elastic element 23 is sleeved on the first sliding rod 21, and the first elastic element 23 is located between the first fixing frame 2 and the trapezoidal block 22. When clamping and connecting galvanized steel pipes, the galvanized steel pipe is first passed through the first rotating ring plate 19, and then one end of the galvanized steel pipe is attached to the four trapezoidal blocks 22. The inclined plane is squeezed through, and during the squeezing process, the trapezoidal block 22 drives the first sliding rod 21 to slide on the first fixed frame 2. The first elastic element 23 is squeezed and contracted under force. According to the length of the galvanized steel pipe and the included angle required for subsequent docking, the four trapezoidal blocks 22 are clamped in the area where the galvanized steel pipe can maintain stability, such as the front end and the center area of ​​the galvanized steel pipe. Relying on the elastic force of the first elastic element 23, the trapezoidal block 22 is pushed to fit against the outer wall of the galvanized steel pipe. It can adapt to clamping and fixing galvanized steel pipes with different outer diameters without the need to change the matching clamp for different pipe diameters. This simplifies the clamping operation, ensures the adaptability of the device, ensures the stability of clamping, and allows for the addition of auxiliary support structures to reduce the impact of steel pipe shaking and displacement on welding accuracy during welding.

[0025] A toothed ring plate 3 is fixedly connected to the first rotating ring plate 19; a third servo motor 31 is fixedly connected to the support base 18; a gear 32 is fixedly connected to the output end of the third servo motor 31, and the gear 32 can mesh and rotate with the toothed ring plate 3; when adjusting the angle of the galvanized steel pipe with the beveled surface for docking, the galvanized steel pipe first passes through the first rotating ring plate 19 and is fixed in its center, and then the output end of the third servo motor 31 drives the gear 32 to rotate, and the gear 32 meshes with the toothed ring plate 3 and rotates synchronously, thereby driving the first rotating ring plate 19 and the clamped galvanized steel pipe to rotate by an angle, and docking the two galvanized steel pipes with the beveled surface after adjusting the angle, reducing the difficulty of welding the galvanized steel pipes with the beveled surface, and ensuring the alignment accuracy of the beveled surface and the effect of the beveled surface docking welding.

[0026] like Figures 1 to 7 As shown, two secondary fixing frames 4 are fixedly connected to the first rotating plate 19. The two secondary fixing frames 4 are arranged opposite each other and are located on the inner ring of the first rotating plate 19. An electric cylinder 41 is fixedly connected to the secondary fixing frame 4. Four extension plates 42 are slidably connected to the first rotating plate 19, and two extension plates 42 are respectively fixed to the output ends of two electric cylinders 41. A secondary rotating plate 43 is fixedly connected to one end of each extension plate 42, and all four extension plates 42 are fixedly connected to the secondary rotating plate 43. When galvanized steel pipes of different lengths are used... During the fixed welding process, the output end of the electric cylinder 41 on the second fixed frame 4 is controlled to extend and retract according to the required length of the galvanized steel pipe to be welded. The electric cylinder 41 synchronously drives the extension plate 42 to slide on the first rotating ring plate 19, thereby adjusting the position of the second rotating ring plate 43. An auxiliary support and fixing structure, such as a common bracket, can be added to the second rotating ring plate 43 to maintain the stability of the galvanized steel pipe during the welding process, reduce the situation where the long galvanized steel pipe sags due to its own weight, causing the joint to be skewed, ensure the fitting accuracy of the joint, and ensure the stable progress of the welding operation.

[0027] A fixed cylinder 5 is fixedly connected to the side of the support base 18 near the second rotating ring plate 43; a sliding extension plate 51 is slidably connected inside the fixed cylinder 5; a fixed ring plate 52 is fixedly connected to the sliding extension plate 51, and the fixed ring plate 52 is rotatably connected to the second rotating ring plate 43; when the second rotating ring plate 43 extends the galvanized steel pipe to a suitable length in conjunction with multiple extension plates 42, the second rotating ring plate 43 simultaneously pulls the fixed ring plate 52 and the sliding extension plate 51 to slide. The sliding extension plate 51 slides on the fixed cylinder 5 on one side of the support base 18. The fixed cylinder 5, together with the sliding extension plate 51 and the fixed ring plate 52, can provide auxiliary support for the extended second rotating ring plate 43, reduce the probability of the second rotating ring plate 43 bending and deforming due to the weight of the galvanized steel pipe, maintain the support stability of the second rotating ring plate 43, and thus ensure the accuracy of the welding position and the welding quality of the galvanized steel pipe.

[0028] Two sliding rods 6 are slidably connected to the first rotating ring plate 19; a support plate 61 is fixedly connected to the two sliding rods 6, and the support plate 61 has an inclined surface on the side near the second rotating ring plate 43; a second elastic element 62 is sleeved on the second sliding rod 6, and the second elastic element 62 is located between the first rotating ring plate 19 and the support plate 61; when supporting the galvanized steel pipe passing through the second rotating ring plate 43, during the process of the galvanized steel pipe entering the second rotating ring plate 43, one end of the galvanized steel pipe can be inclined against the support plate 61. During surface extrusion, the support plate 61, in conjunction with the second sliding rod 6, slides down onto the second rotating plate 43, and can compress and contract the second elastic element 62, so that the support plate 61 supports the bottom of the galvanized steel pipe, assisting in supporting the bottom position of the galvanized steel pipe. Two sets of such auxiliary support structures can be added to the second rotating plate 43, which can be added according to processing needs. This can reduce the probability of the extended end of the long galvanized steel pipe swinging and sagging due to its own weight, ensure the stability of the long galvanized steel pipe during the welding process, and ensure the alignment accuracy of the butt joint position.

[0029] A double-threaded rod 7 is rotatably connected to the second rotating plate 43, and the double-threaded rod 7 has two opposite threads. Two mating brackets 71 are threadedly connected to the double-threaded rod 7. A clamping block 72 is fixedly connected to the end of the mating bracket 71 away from the double-threaded rod 7, and the clamping block 72 is slidably connected to the second rotating plate 43. When the galvanized steel pipe passing through the second rotating plate 43 is fixed in the center, one end of the double-threaded rod 7 is manually held and rotated. A transmission motor can also be added to the double-threaded rod 7 to control the rotation. The double-threaded rod 7 can drive the two mating brackets 71 to move closer to each other through the two opposite threads, thereby driving the two clamping blocks 72 to clamp the galvanized steel pipe from both sides, ensuring the stability of the galvanized steel pipe after passing through the second rotating plate 43, reducing the impact of the galvanized steel pipe shaking on the welding accuracy, and at the same time adapting to the centering and fixing of galvanized steel pipes with different outer diameters, ensuring the stability of the clamping and positioning.

[0030] A fourth servo motor 8 is fixedly connected to one of the clamping blocks 72, and a rotating rod 82 is rotatably connected to the other clamping block 72 via a torsion spring; a first clamping plate 81 is fixedly connected to the output end of the fourth servo motor 8; a second clamping plate 83 is fixedly connected to the end of the rotating rod 82 away from the clamping block 72; both the first clamping plate 81 and the second clamping plate 83 have a V-shaped cross-section; when extending and clamping galvanized steel pipes of different sizes, the two clamping blocks 72 drive the first clamping plate 81 and the second clamping plate 83 to move closer to each other until the first clamping plate 81 and the second clamping plate 83, with their V-shaped cross-sections, clamp the galvanized steel pipes of different sizes. The V-shaped opening can adapt to the outer wall curvature of steel pipes with different outer diameters, allowing the first clamping plate 81 and the second clamping plate 83 to clamp the galvanized steel pipes of different sizes. The clamping plate 83 is fully fitted to the outer wall of the galvanized steel pipe, reducing clamping gaps caused by changes in pipe diameter, ensuring the stability of the galvanized steel pipe in center fixation, reducing the possibility of slippage or displacement of the galvanized steel pipe during clamping, and ensuring the accuracy of the butt welding position. At the same time, when the two galvanized steel pipes are close to one end and difficult to fit together, the output end of the fourth servo motor 8 can drive the first clamping plate 81 to rotate, while the second clamping plate 83, which is close to the surface of the galvanized steel pipe, rotates synchronously with the rotating rod 82 on the clamping block 72. At this time, the torsion spring is stressed, which can finely adjust the tilt angle of the galvanized steel pipe, making the two galvanized steel pipes to be welded fit more tightly, reducing the possibility of gaps at the joint causing substandard welding quality, ensuring the quality of the finished product after welding, and reducing the probability of welding defects.

[0031] Both the first clamping plate 81 and the second clamping plate 83 have telescopic plates 9 fixedly connected to their inner walls, and the telescopic plates 9 have a third elastic element built into them; a square plate 91 is fixedly connected to the end of the telescopic plate 9 away from the clamping block 72; two rotating rollers 92 are rotatably connected to the trapezoidal block 22; when clamping square tubes, rectangular tubes and irregular tubes in galvanized steel pipes, the first clamping plate 81 and the second clamping plate 83 are usually used for clamping round tubes, by adding a telescopic plate 91 at the center of the included angle between the inner walls of the first clamping plate 81 and the second clamping plate 83. The telescopic plate 9 and the square plate 91 are used to compress the square plate 91 to extend it out with the built-in No. 3 elastic element. The two square plates 91 can fit the plane of the square tube, rectangular tube and irregular tube, reducing the situation where the V-shaped opening and the irregular tube are suspended and cannot fit. At the same time, the rotating roller 92 added on the trapezoidal block 22 can fit the outer wall of the tube and rotate. Through the extension and retraction of the output end of the electric cylinder 41, the No. 2 rotating ring plate 43 can pull the clamped steel tube to move, which facilitates the docking of two galvanized steel tubes.

[0032] like Figure 1As shown, the welding assembly includes a hydraulic cylinder 93, a top support 94, and a circuit box 95. The hydraulic cylinder 93 is fixedly connected to the support frame 12. The top support 94 is fixedly connected to the output ends of the two hydraulic cylinders 93. The bottom end of the top support 94 is slidably connected to the circuit box 95 via a second electric slide, and the welding head 11 is slidably connected to the bottom end of the circuit box 95 via a third electric slide. When laser welding two butt-jointed galvanized steel pipes, the output ends of the two hydraulic cylinders 93 extend and retract to control the distance between the top support 94 and the bottom welding head 11 and the steel pipe. The circuit box 95 slides back and forth on the top support 94 via the second electric slide, and the welding head 11 slides left and right on the circuit box 95 via the third electric slide, realizing multi-degree-of-freedom adjustment of the welding position. With the rotation of the two galvanized steel pipes, the welding position of the welding head 11 can be adjusted according to the position of the circumferential seam, ensuring that the welding head 11 is aligned with the welding circumferential seam, and ensuring the welding accuracy and efficiency of the circumferential seam welding.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-angle welding device for galvanized steel pipes based on a rotating station, characterized in that: The system includes a welding base; a welding head is mounted on the welding base; a welding assembly is mounted on the welding base, the welding head is fixed to the welding assembly, and the welding assembly cooperates with the welding head to perform laser welding on galvanized steel pipes; two support frames are fixedly connected to the welding base; a first motor base is fixedly connected to the two support frames; a first servo motor is fixedly connected to the two first motor bases; a connecting frame is fixedly connected to the output end of the first servo motor, and the connecting frame has a sliding groove; a first electric slide is slidably connected in the sliding groove of the connecting frame, and a second motor base is fixedly connected to the first electric slide; a second servo motor is fixedly connected to the second motor base; a support base is fixedly connected to the output end of the second servo motor; a first rotating plate is rotatably connected to the support base; a clamping assembly is mounted on the first rotating plate, and the clamping assembly is used to fix the steel pipes for docking.

2. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 1, characterized in that: The clamping assembly includes a first fixed frame, a first sliding rod, a trapezoidal block, and a first elastic element; four first fixed frames are fixedly connected to a first rotating ring plate, and the four first fixed frames are located on the inner ring of the first rotating ring plate; the first sliding rod is slidably connected to the first fixed frame; the trapezoidal block is fixedly connected to one end of the first sliding rod, and the side of the trapezoidal block near the first rotating ring plate is provided with an inclined surface; the first elastic element is sleeved on the first sliding rod, and the first elastic element is located between the first fixed frame and the trapezoidal block.

3. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 1, characterized in that: A gear ring plate is fixedly connected to the first rotating ring plate; a third servo motor is fixedly connected to the support base; a gear is fixedly connected to the output end of the third servo motor, and the gear can mesh with the gear ring plate to rotate.

4. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 2, characterized in that: Two secondary fixing frames are fixedly connected to the first rotating ring plate. The two secondary fixing frames are arranged opposite each other and are located on the inner ring of the first rotating ring plate. An electric cylinder is fixedly connected to the secondary fixing frame. Four extension plates are slidably connected to the first rotating ring plate, and two extension plates are respectively fixed to the output ends of two electric cylinders. One end of each extension plate is fixedly connected to a secondary rotating ring plate, and all four extension plates are fixedly connected to the secondary rotating ring plate.

5. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 4, characterized in that: A fixed cylinder is fixedly connected to the side of the support base near the second rotating ring plate; a sliding extension plate is slidably connected inside the fixed cylinder; a fixed ring plate is fixedly connected to the sliding extension plate, and the fixed ring plate is rotatably connected to the second rotating ring plate.

6. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 4, characterized in that: Two sliding rods are slidably connected to the first rotating ring plate; a support plate is fixed to the two sliding rods, and the support plate has an inclined surface on the side near the second rotating ring plate; a second elastic element is sleeved on the second sliding rod, and the second elastic element is located between the first rotating ring plate and the support plate.

7. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 4, characterized in that: A double-threaded rod is rotatably connected to the second rotating ring plate, and the double-threaded rod has two opposite threads; two mating brackets are threadedly connected to the double-threaded rod; a clamping block is fixedly connected to the end of the mating bracket away from the double-threaded rod, and the clamping block is slidably connected to the second rotating ring plate.

8. The multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 7, characterized in that: A fourth servo motor is fixedly connected to one of the clamping blocks, and a rotating rod is rotatably connected to the other clamping block via a torsion spring; a first clamping plate is fixedly connected to the output end of the fourth servo motor; a second clamping plate is fixedly connected to the end of the rotating rod away from the clamping block; the cross-sectional shape of both the first and second clamping plates is V-shaped.

9. A multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 8, characterized in that: The inner walls of the No. 1 clamping plate and the No. 2 clamping plate are both fixedly connected to telescopic plates, and the telescopic plates have a No. 3 elastic element inside; a square plate is fixedly connected to the end of the telescopic plate away from the clamping block; two rotating rollers are rotatably connected to the trapezoidal block.

10. A multi-angle welding device for galvanized steel pipes based on a rotating station according to claim 1, characterized in that: The welding assembly includes a hydraulic cylinder, a top support, and a circuit box; the hydraulic cylinder is fixedly connected to the support frame; the top support is fixedly connected to the output ends of the two hydraulic cylinders; the bottom end of the top support is slidably connected to the circuit box via a second electric slide, and the welding head is slidably connected to the bottom end of the circuit box via a third electric slide.

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