High-precision butt welding machine for stainless steel pipes

Abstract

The invention belongs to the technical field of stainless steel pipe butt welding, and particularly relates to a stainless steel pipe high-precision butt welding machine which comprises a supporting plate, the upper side of the supporting plate is rotationally connected with a positive and negative tooth screw rod, the outer side of the positive and negative tooth screw rod is in threaded connection with a clamping plate, and the outer side of the supporting plate is fixedly connected with a fixing ring. The outer side of the fixing ring is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a gear. In other words, after the butt joint position of the pipeline is placed and aligned with the laser welding assembly, the butt joint position of the pipeline is clamped and fixed through the clamping plate, the pipeline does not need to rotate through rotation of the laser welding assembly, then the welding position of the pipeline is not prone to deviation, and the welding position of the pipeline is not prone to deviation by reserving enough length for an outer side wire of the laser welding assembly. And the connecting wire can synchronously rotate along with the laser welding assembly, so that the rotation of the laser welding assembly is not limited, the welding of the device is more stable, and the stability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pipe butt welding, in particular to a high-precision stainless steel pipe butt welding machine. Background Art

[0002] Stainless steel pipe is a hollow, long, round steel product, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components.

[0003] The Chinese patent application with the number CN115922225A discloses a high-precision butt-welding positioning device for stainless steel pipes based on self-centering. It proposes that in most existing processing methods, the operator manually limits the position of the stainless steel pipe and then adjusts the welding device or the position of the stainless steel pipe; in actual use, the two stainless steel pipes that have not been completely welded are rotated, and the butt joints of the two stainless steel pipes are easily displaced due to the vibration generated by the rotation and the actual operating errors of the staff. As a result, after each adjustment, the welding process needs to be interrupted and the stainless steel pipes need to be repositioned and aligned, affecting the production rhythm; therefore, a high-precision butt-welding machine for stainless steel pipes is proposed to address the above problems. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a high-precision butt welding machine for stainless steel pipes according to the present invention comprises a support plate, the upper side of the support plate is rotatably connected to a forward and reverse threaded screw, the outer side of the forward and reverse threaded screw is threadedly connected to a clamping plate, the outer side of the support plate is fixedly connected to a fixing ring, the outer side of the fixing ring is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a gear, the outer side of the gear is meshed with a first gear ring, the two side planes of the first gear ring are fixedly connected with a retaining ring, the retaining ring and the fixing ring are slidably connected, a laser welding assembly is provided on the inner side of the first gear ring, the outer side of the forward and reverse threaded screw is fixedly connected to a second gear ring, the outer side of the second gear ring is meshed with a gear plate, and the gear plate and the support plate are slidably connected; Before the specific use of the embodiment of the present invention, after the pipes of different sizes are butted together, their butt joints are clamped by the splints, and the center of the pipe will be aligned with the center of the fixed ring. However, the diameters of the pipes of different sizes are different, so that the distances between the outer walls of the pipes of different sizes and the laser welding assembly are different. It is necessary to ensure that the laser welding assembly is a laser welder with an integrated visual positioning system, a laser rangefinder, a motor-driven lens and a closed-loop control algorithm, so that the laser welding assembly can adjust the welding position according to the different distances between the outer wall of the pipe and it, so as to ensure that the laser welding assembly can weld the butt joints of pipes of different sizes. Before welding, ensure that the wiring on the outside of the laser welding assembly has enough length for one rotation, and fix the remaining length of the wiring so that when the laser welding assembly rotates, the wiring can rotate synchronously with the laser welding assembly because of the length reserved for one rotation of the laser welding assembly. After the laser welding assembly rotates one circle forward, the laser welding assembly is reversed and returned to its original position. Since the laser welding assembly can only rotate forward or reverse once, the state of the line after reversing one circle will return to the initial "just one circle" state. Instead of being wrapped around the outside of the steel pipe, and ensuring that the splints are as shown in the figure, the side close to each other is an arc-shaped surface, the openings of the two stainless steel pipes are butted together, and passed through the inner side of the fixed ring, the tooth plate can be pushed to move, so that the tooth plate drives multiple second gear rings to rotate synchronously, and the second gear rings drive multiple positive and negative screws to rotate synchronously, and the splints are driven to move by rotating the positive and negative screws. Because the two splints are respectively located on the positive and negative sides of the positive and negative screws, the splints are close to each other, thereby clamping and fixing the stainless steel pipe, and guiding the pipe through the arc-shaped surfaces of the two splints to facilitate centering of the pipe. At this time, ensure that the welding points of the two stainless steel pipes are aligned with the laser welding assembly, and then start the laser welding assembly to melt and weld between the pipes. At the same time, the gear is driven to rotate by the first motor, and the first gear ring is driven to rotate by the gear, and is clamped into the inner side of the fixed ring through the clamping ring, so that the rotation track of the first gear ring is restricted by the clamping ring, so that the first gear ring can drive the laser welding assembly inside it to rotate stably, thereby fully welding the pipe joints, and the support rod supports and fixes the inner wall of the stainless steel pipe; That is: after the pipe joint is placed in alignment with the laser welding assembly, it is clamped and fixed by the clamping plate, and the laser welding assembly is rotated so that the pipe does not need to be rotated, so that the welding position of the pipe is not easily offset. By leaving enough length for the wiring on the outside of the laser welding assembly, the wiring can rotate synchronously with the laser welding assembly, and thus will not restrict the rotation of the laser welding assembly, making the welding of the device more stable and improving the stability of the device. When the forward and reverse thread screws need to be rotated, the two forward and reverse thread screws can be driven to rotate by moving the tooth plate only, without rotating the two forward and reverse thread screws separately, making the operation of the device more convenient and improving the convenience of using the device.

[0006] Preferably, the inner side of the support plate is fixedly connected to a third motor, the output end of the third motor is fixedly connected to a movable plate, the outer side of the support plate is slidably connected to a fixed plate, one end of the fixed plate is fixedly connected to a second motor, the output end of the second motor is fixedly connected to an adjusting screw, the adjusting screw and the support plate are threadedly connected, the lower side of the support plate is rotatably connected to a roller, the outer side of the fixed plate is fixedly connected to a fixed block, and the movable plate and the fixed block are used in conjunction with each other; Before using the embodiment of the present invention, ensure that after the adjusting screw drives the support plate to move to the maximum position inside the fixed plate, the spacing between the fixed block and the fixed ring is the same as the spacing between the fixed ring and the movable plate. When using the embodiment of the present invention, the movable plate is first driven to rotate by the third motor so that the movable plate rotates to the upper end and the lower end, and the two stainless steel tubes are directly sleeved on the outside of the support rod and pressed against each other, and one end of one stainless steel tube is pressed against one side of the fixed block. Because the two stainless steel tubes are butt-jointed and placed between the fixed block and the movable plate, the adjusting screw is driven to rotate by the second motor, and the support plate is driven to move by the adjusting screw, so that the support plate drives the movable plate to approach the fixed block, thereby clamping and fixing the two ends of the two stainless steel tubes through the movable plate and the fixed block; That is: when fixing two stainless steel pipes of the same length and whose length after docking is equal to the distance between the movable plate and the fixed block, the movable plate is first driven to rotate by the third motor so that the movable plate rotates to the lower upper end, and the two stainless steel pipes are directly put on the outside of the support rod and pressed against each other, and one end of one stainless steel pipe is pressed against one side of the fixed block, and the fixed block cooperates with the movable plate to press the two ends of the two stainless steel pipes that are docked and away from each other, so that the alignment welding points of the stainless steel pipes are convenient for alignment with the laser welding assembly for subsequent welding, and the fixed block cooperates with the movable plate to press the two ends of the two stainless steel pipes that are docked and away from each other, and then the stainless steel pipes are further clamped and fixed by the clamping plate, so that the fixation of the stainless steel pipe is more stable, further improving the convenience of centering alignment of the device and the stability of clamping and fixing.

[0007] Preferably, the outer side of the fixed block is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to a movable block, the inner side of the movable block is provided with a T-slot, the inner side of the T-slot is slidably connected to a T-block, one end of the T-block is fixedly connected to a support rod, the outer side of the support rod is fixedly connected to a circular plate, a sliding groove is provided on the surface of the fixed block, the sliding groove and the support rod are slidably connected, and the circular plate and the fixed block are used in conjunction with each other; Before using the embodiment of the present invention, ensure that the movable block is in the shape of a plurality of triangular plates connected to the outside of an approximately elliptical special-shaped plate as shown in the figure and the figure, and ensure that the T-slot on the inside of the movable block is centered at one end and is set at an outward tilt angle, so that when the T-slot moves, the T-block is restricted to move up and down in a fixed position, so that the T-slot can push the T-blocks away from each other. Ensure that the circular plates on both sides of the fixed block are close to the planes on both sides of the fixed block, and that the support rods are made of a material with a melting point higher than that of the stainless steel tube, and ensure that the distance between the multiple support rods is less than the inner diameter of the stainless steel tube. , and the length of the support rod is greater than the length of a stainless steel tube. When the embodiment of the present invention is used, after the stainless steel tube passes through the inner side of the fixed ring, the support rod can be inserted into the inner side of the two stainless steel tubes. After the clamping plate cooperates with the fixed block and the movable plate to clamp and fix the stainless steel tube, the movable block can be driven to move by the hydraulic cylinder. Because the outer side of the movable block is provided with multiple inclined surfaces, and the T-shaped groove is provided on the inner side of the inclined surface, the T-shaped groove is inclined, so that after the movable block moves, the T-shaped groove will push the T-shaped blocks away from each other, so that the T-shaped block drives the support rod to expand outward, so that the support rod can be close to the inner wall of the stainless steel tube; That is: when the stainless steel pipes are butt-jointed, because the distance between the multiple support rods is smaller than the inner diameter of the stainless steel pipes and the length of the support rods is greater than the length of one stainless steel pipe, the multiple support rods can be inserted into the inner sides of the two stainless steel pipes and expanded by the support rods to simultaneously stick to the inner walls of the two stainless steel pipes, thereby further supporting and aligning the two stainless steel pipes, making the fixation and alignment of the stainless steel pipes more stable, and making the subsequent welding more stable. After welding, the support plate is moved to drive the movable plate to move, so that the movable plate is away from the stainless steel pipe, and then the movable plate is driven to rotate by the third motor, so that the upper side of the movable plate is rotated away from the stainless steel pipe. At this time, the welded stainless steel pipe is pulled to separate from the support rods and can be removed, which further improves the welding stability of the device.

[0008] Preferably, a guide groove is provided on the inner side of the support rod, a mounting groove is provided on the surface of the movable plate, a guide rod is threadedly connected to the inner side of the mounting groove, and the guide rod and the guide groove are used in conjunction with each other; Before using the embodiment of the present invention, ensure that the inclined surface inside the guide groove and the tip of the guide rod are both conical. When using the embodiment of the present invention, the guide rod is screwed into the inner side of the mounting groove at different positions according to the inner wall size of the stainless steel tube. After the support rod supports and fixes the inner wall of the stainless steel tube, the support rod is tightly restrained by the stainless steel tube so that when one end of the movable plate is close to the fixed block, the movable plate drives the guide rod to move and insert into the inner side of the guide groove. That is: after the support rod is tightly attached to the inner wall of the stainless steel tube, the guide rod can be inserted into the inner side of the guide groove, thereby mechanically limiting the end of the support rod away from the fixed block, preventing the support rod from retracting after supporting the inner wall of the stainless steel tube, making the support rod support the inner wall of the stainless steel tube more stable, and improving the stability of the device.

[0009] Preferably, a groove is provided on the inner side of the support rod, and a pulley is slidably connected to the inner side of the groove; Before using the embodiment of the present invention, ensure that the pulley is made of a material with a melting point higher than that of the stainless steel tube. When using the embodiment of the present invention, the stainless steel tube can be directly sleeved on the outside of the support rod, and the support rods can be moved away from each other to support the stainless steel tube. Then, the movable plate can be moved to push the stainless steel tube to move, so that when the stainless steel tube moves, friction is generated with the pulley, causing the pulley to rotate. That is: when docking the stainless steel pipes, the stainless steel pipes can be supported and fixed by the support rods first, so that the stainless steel pipes are easy to align, and no additional manual labor is required to lift and support the stainless steel pipes. When the movable plate moves, the pulley supports the stainless steel pipes before the support rods, and the rotation of the pulley makes it easy for the stainless steel pipes to slide, so that the movable plate cooperates with the fixed block to center it. Finally, the stainless steel pipes are clamped and fixed by the splints, so that the stainless steel pipes are fixed and aligned, and they are kept at a fixed height without manual response, thereby improving the convenience of using the device.

[0010] Preferably, a movable screw is fixedly connected to the outer side of the first gear ring, a movable rod is threadedly connected to the outer side of the movable screw, and one end of the movable rod is rotatably connected to a polishing pad; When the embodiment of the present invention is used, the movable rod is rotated and moved according to the size of the stainless steel pipe, so that the movable rod drives the grinding pad to move to the joint close to the stainless steel pipe. After welding is completed, the movable rod can be driven to move by the first ring gear, and the grinding pad can be driven to rotate by the movable rod, so that the grinding pad moves to grind the pipe; That is, after the device is welded, the grinding pad is moved close to the stainless steel pipe, and the grinding pad is rotated to grind the joint of the stainless steel pipe, thereby facilitating the removal of excess welding slag at the grinding position and improving the practicality of the device.

[0011] Preferably, the surfaces of the movable screw and the movable rod are both provided with slots, the inner side of the slot is slidably connected to an inserting rod, and the outer side of the inserting rod is threadedly connected to a nut; When using the embodiment of the present invention, after the polishing pad is pressed against the polishing area, the insertion rod can be inserted into the inner side of the slot of the movable screw and the movable rod, and then the insertion rod is inserted into the slot, and the nut is turned until it is screwed onto the outer side of both ends of the insertion rod; That is: after the moving screw is screwed, the insertion rod can be inserted into it and the inner side of the moving rod to further limit the position of the moving rod, and two nuts can be screwed on the outside of the insertion rod to further limit the position of the insertion rod, so that the restriction of the insertion rod on the moving rod is more stable, thereby improving the stability of the device.

[0012] Preferably, one side of the support plate is fixedly connected to a limiting plate, a limiting groove is provided on the inner side of the fixed plate, and the limiting plate and the limiting groove are slidably connected; When the embodiment of the present invention is used, when the support plate moves, the rotation of the roller makes its movement smoother, and the limiting grooves on both sides restrict the limiting plate, so that the movement trajectory of the limiting plate is further restricted, and the movement trajectory of the support plate is further restricted by the limiting plate; That is, the limiting plate is clamped by the limiting groove, so that its movement is not easy to shake and is more stable, and the limiting plate restricts the movement of the support plate, making the movement of the support plate more stable, further improving the stability of the device.

[0013] Preferably, a triangular groove is provided on the inner side of the tooth plate, a spring rod is fixedly connected to the outer side of the support plate, and one end of the spring rod is fixedly connected to a triangular block; Before using the embodiment of the present invention, ensure that the triangular groove and the triangular block have the same shape and that one side of the triangular block is away from the support plate. When using the embodiment of the present invention, pull the triangular block away from the triangular groove, then pull the tooth plate to drive the second gear ring to move. After the tooth plate has moved, release the triangular block so that it can be inserted into the inner side of the triangular groove at the appropriate position. That is: after the tooth plate has finished moving, once it is pushed by external force to insert into the support plate, the triangular block is inserted into the inner side of the triangular groove, and the plane of the triangular block blocks the movement of the triangular groove, making it difficult for the tooth plate to continue to enter the inner side of the support plate, and thus making it difficult for the tooth plate to move due to external force collision and extrusion, resulting in excessive clamping of the splint on the stainless steel pipe, further improving the stability of the device.

[0014] The present invention is beneficial in that: 1. The high-precision butt welding machine for stainless steel pipes described in the present invention, before the specific use of the embodiment of the present invention, because after the pipes of different sizes are butt-jointed, their butt joints are clamped by the clamping plate, the center of the pipe and the center of the fixed ring will be aligned, and the diameters of the pipes of different sizes are different, so that the distances between the outer walls of the pipes of different sizes and the laser welding assembly are different, it is necessary to ensure that the laser welding assembly is a laser welder with an integrated visual positioning system, a laser rangefinder, a motor-driven lens and a closed-loop control algorithm, so that the laser welding assembly can adjust the welding position according to the different distances between the outer wall of the pipe and it, so as to ensure that the laser welding assembly can weld pipes of different sizes Welding is performed at the butt joints, and before welding, ensure that the wiring on the outside of the laser welding component is long enough for it to rotate one circle, and fix the remaining length of the wiring so that when the laser welding component rotates, the wiring can reserve enough length for the laser welding component to rotate one circle, so that it can rotate synchronously with the laser welding component. After the laser welding component rotates one circle forward, reverse the laser welding component to return to its position. Since the laser welding component will only rotate forward or reverse one circle, the state of the wire will return to the initial "just one circle" state after reversing one circle, so that it will not be wrapped around the outside of the steel pipe, and ensure that the splints are as shown in the figure, and the side close to each other is an arc surface. shape, butt the openings of the two stainless steel pipes together, and pass them through the inner side of the fixed ring, and drive the splint to move by rotating the positive and negative threaded screws. Because the two splints are respectively located on the positive and negative sides of the positive and negative threaded screws, the splints are close to each other, thereby clamping and fixing the stainless steel pipe, and guiding the pipe through the arc surface of the two splints to facilitate centering of the pipe. At this time, ensure that the welding points of the two stainless steel pipes are aligned with the laser welding assembly, and then start the laser welding assembly to melt and weld between the pipes. At the same time, the gear is driven to rotate by the first motor, and the first gear ring is driven to rotate by the gear, and the clamp is clamped into the inner side of the fixed ring through the clamping ring, thereby aligning the second The rotation track of a gear ring is restricted so that the first gear ring can drive the laser welding assembly inside it to rotate stably, thereby fully welding the pipe joint; that is: after the pipe joint is placed in alignment with the laser welding assembly, it is clamped and fixed by a clamp, and the laser welding assembly is rotated so that the pipe does not need to be rotated, thereby making it difficult for the welding position of the pipe to shift. By leaving enough length for the wiring on the outside of the laser welding assembly, the wiring can rotate synchronously with the laser welding assembly, thereby not restricting the rotation of the laser welding assembly, making the welding of the device more stable and improving the stability of the device.

[0015] 2. A high-precision butt welding machine for stainless steel pipes described in the present invention, before the specific use of the embodiment of the present invention, ensure that after the adjusting screw drives the support plate to move to the maximum position inside the fixed plate, the distance between the fixed block and the fixed ring is the same as the distance between the fixed ring and the movable plate. When the embodiment of the present invention is used, the movable plate is first driven to rotate by the third motor so that the movable plate rotates to the upper end and is close to the bottom, and the two stainless steel pipes are directly sleeved on the outside of the support rod and pressed against each other, and one end of a stainless steel pipe is pressed against one side of the fixed block. Because the two stainless steel pipes are butt-jointed and placed between the fixed block and the movable plate, the adjusting screw is driven to rotate by the second motor, and the support plate is driven to move by the adjusting screw, so that the support plate drives the movable plate to approach the fixed block, thereby clamping and fixing the two ends of the two stainless steel pipes through the cooperation of the movable plate and the fixed block; That is: when fixing two stainless steel pipes of the same length and whose length after docking is equal to the distance between the movable plate and the fixed block, the movable plate is first driven to rotate by the third motor so that the movable plate rotates to the lower upper end, and the two stainless steel pipes are directly put on the outside of the support rod and pressed against each other, and one end of one stainless steel pipe is pressed against one side of the fixed block, and the fixed block cooperates with the movable plate to press the two ends of the two stainless steel pipes that are docked and away from each other, so that the alignment welding points of the stainless steel pipes are convenient for alignment with the laser welding assembly for subsequent welding, and the fixed block cooperates with the movable plate to press the two ends of the two stainless steel pipes that are docked and away from each other, and then the stainless steel pipes are further clamped and fixed by the clamping plate, so that the fixation of the stainless steel pipe is more stable, further improving the convenience of centering alignment of the device and the stability of clamping and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural front view of the present invention; Figure 2 It is a side view of the structure of the present invention; Figure 3 This is an enlarged schematic diagram of the structure at point A in the present invention; Figure 4 Schematic diagram of the support plate structure in the present invention; Figure 5 Schematic diagram of the splint structure in the present invention; Figure 6 Schematic diagram of the fixing ring structure in the present invention; Figure 7Schematic diagram of the movable block structure in the present invention; Figure 8 Schematic diagram of the support rod structure in the present invention; Figure 9 This is a schematic diagram of the rod insertion structure in the present invention; Figure 10 It is an enlarged schematic diagram of the structure at point B in the present invention.

[0018] In the figure: 1. Support plate; 2. Positive and negative thread screw; 3. Clamp; 4. Fixed ring; 5. First motor; 6. Gear; 7. First gear ring; 8. Snap ring; 9. Laser welding assembly; 10. Movable plate; 11. Fixed plate; 12. Second motor; 13. Adjusting screw; 14. Roller; 15. Fixed block; 16. Hydraulic cylinder; 17. Movable block; 18. T-slot; 19. T-block; 20. Support rod; 301. Guide groove; 21. Circular plate; 22. Slide; 23. Mounting groove; 24. Guide rod; 25. Groove; 26. Pulley; 27. Second gear ring; 28. Tooth plate; 29. ​​Moving screw; 30. Moving rod; 31. Grinding pad; 32. Slot; 33. Insert rod; 34. Nut; 35. Limit plate; 36. Limit groove; 37. Triangular groove; 38. Spring rod; 39. Triangular block. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Specific examples are given below.

[0021] See also Figures 1 to 10 As shown, a high-precision butt welding machine for stainless steel pipes according to an embodiment of the present invention includes a support plate 1, the upper side of the support plate 1 is rotatably connected to a forward and reverse threaded screw 2, the outer side of the forward and reverse threaded screw 2 is threadedly connected to a clamping plate 3, the outer side of the support plate 1 is fixedly connected to a fixing ring 4, the outer side of the fixing ring 4 is fixedly connected to a first motor 5, the output end of the first motor 5 is fixedly connected to a gear 6, the outer side of the gear 6 is meshed with a first gear ring 7, the first gear ring 7 is fixedly connected to a plane on both sides of the first gear ring 7, the snap ring 8 and the fixing ring 4 are slidably connected, a laser welding assembly 9 is provided on the inner side of the first gear ring 7, the outer side of the forward and reverse threaded screw 2 is fixedly connected to a second gear ring 27, the outer side of the second gear ring 27 is meshed with a tooth plate 28, and the tooth plate 28 and the support plate 1 are slidably connected; Before the specific use of the embodiment of the present invention, after the pipes of different sizes are butted together, their butt joints are clamped by the clamping plate 3, and the center of the pipe circle and the center of the fixing ring 4 will be aligned. However, the diameters of the pipes of different sizes are different, so that the distances between the outer walls of the pipes of different sizes and the laser welding assembly 9 are different. It is necessary to ensure that the laser welding assembly 9 is a laser welder with an integrated visual positioning system, a laser rangefinder, a motor-driven lens and a closed-loop control algorithm, so that the laser welding assembly 9 can adjust the welding position according to the different distances between the outer wall of the pipe and it, so as to ensure that the laser welding assembly 9 can weld the butt joints of pipes of different sizes. Perform welding, and before welding, ensure that the wiring on the outside of the laser welding component 9 is long enough for it to rotate one circle, and fix the remaining length of the wiring, so that when the laser welding component 9 rotates, the wiring can reserve enough length for the laser welding component 9 to rotate one circle, so that it can rotate one circle synchronously with the laser welding component 9. After the laser welding component 9 rotates one circle forward, the laser welding component 9 is reversed and returned to its position. Because the laser welding component 9 can only rotate forward or reverse one circle, the state of the wire will return to the initial "just one circle" state after reversing one circle, so that it will not be wrapped around the outside of the steel pipe, and ensure that the splint 3 is as Figure 1 As shown in the figure, the side close to each other is an arc-shaped surface. The openings of the two stainless steel pipes are connected and passed through the inner side of the fixing ring 4. The clamping plate 3 is driven to move by rotating the positive and negative thread screws 2. Since the two clamping plates 3 are respectively located on the positive and negative sides of the positive and negative thread screws 2, the clamping plates 3 are close to each other, thereby clamping and fixing the stainless steel pipe, and guiding the pipe through the arc surface of the two clamping plates 3 to facilitate the centering of the pipe. At this time, ensure that the welding points of the two stainless steel pipes are aligned with the laser welding assembly 9, and then start the laser welding assembly 9 to melt and weld the pipes. At the same time, The first motor 5 drives the gear 6 to rotate, and the gear 6 drives the first gear ring 7 to rotate. The clamping ring 8 is clamped into the inner side of the fixing ring 4, so that the clamping ring 8 limits the rotation track of the first gear ring 7, so that the first gear ring 7 can drive the laser welding assembly 9 inside it to rotate stably, thereby fully welding the pipe joint. After the support rod 20 supports and fixes the inner wall of the stainless steel pipe, the gear plate 28 can be pushed to move, so that the gear plate 28 drives multiple second gear rings 27 to rotate synchronously, and the second gear rings 27 drive multiple forward and reverse thread screws 2 to rotate synchronously; That is: after the pipe joint is placed in alignment with the laser welding assembly 9, it is clamped and fixed by the clamping plate 3, and the laser welding assembly 9 is rotated so that the pipe does not need to be rotated, so that the welding position of the pipe is not easily offset. By leaving enough length for the outer wiring of the laser welding assembly 9, the wiring can rotate synchronously with the laser welding assembly 9, and thus will not restrict the rotation of the laser welding assembly 9, making the welding of the device more stable and improving the stability of the device. When the forward and reverse thread screws 2 need to be rotated, the two forward and reverse thread screws 2 can be driven to rotate by moving the tooth plate 28, without the need to rotate the two forward and reverse thread screws 2 separately, making the operation of the device more convenient and improving the convenience of using the device.

[0022] See also Figure 1 and Figure 2 As shown, the inner side of the support plate 1 is fixedly connected to a third motor 101, the output end of the third motor 101 is fixedly connected to a movable plate 10, the outer side of the support plate 1 is slidably connected to a fixed plate 11, one end of the fixed plate 11 is fixedly connected to a second motor 12, the output end of the second motor 12 is fixedly connected to an adjusting screw 13, the adjusting screw 13 is threadedly connected to the support plate 1, the lower side of the support plate 1 is rotatably connected to a roller 14, the outer side of the fixed plate 11 is fixedly connected to a fixed block 15, and the movable plate 10 and the fixed block 15 are used in conjunction with each other; Before using the embodiment of the present invention, ensure that after the adjusting screw 13 drives the support plate 1 to move to the maximum position inside the fixed plate 11, the distance between the fixed block 15 and the fixed ring 4 is the same as the distance between the fixed ring 4 and the movable plate 10. When using the embodiment of the present invention, the movable plate 10 is first driven to rotate by the third motor 101, so that the movable plate 10 rotates to the upper end and the two stainless steel tubes are directly sleeved on the outside of the support rod 20 and pressed against each other, and one end of one stainless steel tube is pressed against one side of the fixed block 15. Because the two stainless steel tubes are butt-jointed and placed between the fixed block 15 and the movable plate 10, the adjusting screw 13 is driven to rotate by the second motor 12, and the support plate 1 is driven to move by the adjusting screw 13, so that the support plate 1 drives the movable plate 10 to approach the fixed block 15, thereby clamping and fixing the two ends of the two stainless steel tubes through the movable plate 10 and the fixed block 15; That is: when fixing two stainless steel pipes of the same length and whose length after docking is equal to the distance between the movable plate 10 and the fixed block 15, the movable plate 10 is first driven to rotate by the third motor 101, so that the movable plate 10 rotates to the upper end and the two stainless steel pipes are directly put on the outside of the support rod 20 and pressed against each other, and one end of a stainless steel pipe is pressed against one side of the fixed block 15, and the fixed block 15 cooperates with the movable plate 10 to press the two ends of the two stainless steel pipes that are docked away from each other, so that the alignment welding point of the stainless steel pipe is convenient for alignment with the laser welding assembly 9 for subsequent welding, and the fixed block 15 cooperates with the movable plate 10 to press the two ends of the two stainless steel pipes that are docked away from each other, and then the stainless steel pipe is further clamped and fixed by the clamping plate 3, so that the fixation of the stainless steel pipe is more stable, further improving the convenience of centering alignment of the device and the stability of clamping and fixing.

[0023] See also Figure 1 、 Figure 7 and Figure 8 As shown, the outer side of the fixed block 15 is fixedly connected to a hydraulic cylinder 16, the output end of the hydraulic cylinder 16 is fixedly connected to a movable block 17, the inner side of the movable block 17 is provided with a T-slot 18, the inner side of the T-slot 18 is slidably connected to a T-block 19, one end of the T-block 19 is fixedly connected to a support rod 20, the outer side of the support rod 20 is fixedly connected to a circular plate 21, the surface of the fixed block 15 is provided with a slide groove 22, the slide groove 22 and the support rod 20 are slidably connected, and the circular plate 21 and the fixed block 15 are used in conjunction with each other; Before using the embodiment of the present invention, ensure that the active block 17 is as follows Figure 7 and Figure 8The shape of a plurality of triangular plates is connected to the outside of an approximately elliptical special-shaped plate, ensuring that the T-slot 18 on the inner side of the movable block 17 is centered at one end and is set at an outward tilt angle, so that when the T-slot 18 moves, the T-block 19 is restricted to move up and down in a fixed position, so that the T-slot 18 can push the T-blocks 19 away from each other, ensuring that the circular plates 21 on both sides of the fixed block 15 are close to the planes on both sides of the fixed block 15, and the support rods 20 are made of a material with a melting point higher than the melting point of the stainless steel tube, and ensuring that the distance between the multiple support rods 20 is less than the inner diameter of the stainless steel tube, and the length of the support rods 20 is greater than one stainless steel tube. Length, when used in the embodiment of the present invention, after the stainless steel pipe passes through the inner side of the fixing ring 4, the support rod 20 can be inserted into the inner side of the two stainless steel pipes. After the clamping plate 3 cooperates with the fixed block 15 and the movable plate 10 to clamp and fix the stainless steel pipe, the movable block 17 can be driven to move by the hydraulic cylinder 16. Because a plurality of inclined surfaces are provided on the outer side of the movable block 17, and the T-slot 18 is provided on the inner side of the inclined surface, the T-slot 18 is inclined, so that after the movable block 17 moves, the T-slot 18 will push the T-blocks 19 away from each other, so that the T-blocks 19 drive the support rod 20 to expand outward, so that the support rod 20 can be close to the inner wall of the stainless steel pipe; That is: when the stainless steel pipes are butt-jointed, because the distance between the multiple support rods 20 is smaller than the inner diameter of the stainless steel pipes, and the length of the support rods 20 is greater than the length of one stainless steel pipe, the multiple support rods 20 can be inserted into the inner sides of the two stainless steel pipes, and the support rods 20 expand to simultaneously stick to the inner walls of the two stainless steel pipes, thereby further supporting and aligning the two stainless steel pipes, making the fixation and alignment of the stainless steel pipes more stable, and making the subsequent welding more stable. After welding, the support plate 1 is moved to drive the movable plate 10 to move, so that the movable plate 10 is away from the stainless steel pipe, and then the movable plate 10 is driven to rotate by the third motor 101, so that the upper side of the movable plate 10 is rotated away from the stainless steel pipe. At this time, the welded stainless steel pipe is pulled to separate from the support rods 20 and can be removed, which further improves the stability of the device welding.

[0024] See also Figure 1 、 Figure 2 and Figure 4 As shown, a guide groove 301 is provided on the inner side of the support rod 20, and a mounting groove 23 is provided on the surface of the movable plate 10. A guide rod 24 is threadedly connected to the inner side of the mounting groove 23. The guide rod 24 and the guide groove 301 are used in conjunction with each other; Before using the embodiment of the present invention, ensure that the inclined surface inside the guide groove 301 and the tip of the guide rod 24 are both conical. When using the embodiment of the present invention, according to the inner wall size of the stainless steel tube, the guide rod 24 is screwed into the inner side of the mounting groove 23 at different positions. After the support rod 20 supports and fixes the inner wall of the stainless steel tube, the support rod 20 is tightly restrained by the stainless steel tube, so that when one end of the movable plate 10 is close to the fixed block 15, the movable plate 10 drives the guide rod 24 to move and insert into the inner side of the guide groove 301. That is: after the support rod 20 is tightly attached to the inner wall of the stainless steel tube, the guide rod 24 can be inserted into the inner side of the guide groove 301, thereby mechanically limiting the end of the support rod 20 away from the fixed block 15, preventing the support rod 20 from retracting after supporting the inner wall of the stainless steel tube, making the support rod 20 more stable in supporting the inner wall of the stainless steel tube, and improving the stability of the device.

[0025] See also Figure 2 and Figure 8 As shown, a groove 25 is formed inside the support rod 20, and a pulley 26 is slidably connected inside the groove 25; Before using the embodiment of the present invention, ensure that the pulley 26 is made of a material with a melting point higher than that of the stainless steel tube. When using the embodiment of the present invention, the stainless steel tube can be directly sleeved on the outside of the support rod 20. The support rods 20 are moved away from each other to support the stainless steel tube. Then, the movable plate 10 is moved to push the stainless steel tube to move. When the stainless steel tube moves, friction is generated between the pulley 26, causing the pulley 26 to rotate. That is, when the stainless steel pipes are docked, the stainless steel pipes can be supported and fixed by the support rods 20 first, so that the stainless steel pipes are easy to align, and no additional manual work is required to lift and support the stainless steel pipes. When the movable plate 10 moves, the pulley 26 supports the stainless steel pipes before the support rods 20, and the rotation of the pulley 26 makes it easy for the stainless steel pipes to slide, thereby facilitating the movable plate 10 to cooperate with the fixed block 15 to center it. Finally, the stainless steel pipes are clamped and fixed by the clamping plate 3, so that the stainless steel pipes are fixed and aligned, and there is no need for staff to keep them at a fixed height all the time, thereby improving the convenience of using the device.

[0026] See also Figure 2 and Figure 9 As shown, a moving screw 29 is fixedly connected to the outer side of the first gear ring 7, a moving rod 30 is threadedly connected to the outer side of the moving screw 29, and a grinding pad 31 is rotatably connected to one end of the moving rod 30; When the embodiment of the present invention is used, the movable rod 30 is rotated and moved according to the size of the stainless steel pipe, so that the movable rod 30 drives the grinding pad 31 to move to the joint close to the stainless steel pipe. After welding is completed, the movable rod 30 can be driven to move by the first ring gear 7, and the grinding pad 31 can be driven to rotate by the movable rod 30, so that the grinding pad 31 moves to grind the pipe; That is, after the device is welded, the grinding pad 31 is moved close to the stainless steel pipe, and the grinding pad 31 is rotated to grind the joint of the stainless steel pipe, thereby facilitating the removal of excess welding slag at the grinding position and improving the practicality of the device.

[0027] See also Figure 9 As shown, the surfaces of the movable screw rod 29 and the movable rod 30 are both provided with a slot 32, an insert rod 33 is slidably connected to the inner side of the slot 32, and a nut 34 is threadedly connected to the outer side of the insert rod 33; When using the embodiment of the present invention, after the polishing pad 31 is close to the polishing area, the insertion rod 33 can be inserted into the inner side of the slot 32 of the moving screw 29 and the moving rod 30, and then the insertion rod 33 is inserted into the slot 32, and the nut 34 is turned until it is screwed onto the outer side of both ends of the insertion rod 33; That is: after the moving screw 29 is screwed, the insertion rod 33 can be inserted into it and the inner side of the moving rod 30 to further limit the position of the moving rod 30, and two nuts 34 can be screwed on the outside of the insertion rod 33 to further limit the position of the insertion rod 33, so that the restriction of the insertion rod 33 on the moving rod 30 is more stable, thereby improving the stability of the device.

[0028] See also Figure 1 and Figure 4 As shown, one side of the support plate 1 is fixedly connected to a limiting plate 35, and a limiting groove 36 is provided on the inner side of the fixing plate 11, and the limiting plate 35 and the limiting groove 36 are slidably connected; When the embodiment of the present invention is used, when the support plate 1 moves, the rotation of the roller 14 makes its movement smoother, and the limiting grooves 36 on both sides restrict the limiting plates 35, so that the movement trajectory of the limiting plates 35 is further restricted, and the movement trajectory of the support plate 1 is further restricted by the limiting plates 35; That is, the limiting plate 35 is clamped by the limiting groove 36, so that its movement is not easy to shake and is more stable, so that the limiting plate 35 restricts the movement of the support plate 1, making the movement of the support plate 1 more stable, further improving the stability of the device.

[0029] See also Figure 3 As shown, a triangular groove 37 is formed on the inner side of the tooth plate 28, a spring rod 38 is fixedly connected to the outer side of the support plate 1, and a triangular block 39 is fixedly connected to one end of the spring rod 38; Before using the embodiment of the present invention, ensure that the triangular groove 37 and the triangular block 39 have the same shape and that one side thereof is away from the support plate 1. When using the embodiment of the present invention, pull the triangular block 39 away from the triangular groove 37, then pull the tooth plate 28 to drive the second gear ring 27 to move. After the tooth plate 28 has moved, release the triangular block 39 so that it is inserted into the inner side of the triangular groove 37 at the appropriate position. That is: after the tooth plate 28 has finished moving, once it is pushed by external force to insert into the support plate 1, the triangular block 39 is inserted into the inner side of the triangular groove 37, and the plane of the triangular block 39 blocks the movement of the triangular groove 37, making it difficult for the tooth plate 28 to continue to enter the inner side of the support plate 1, and thus making it difficult for the tooth plate 28 to move due to external force collision and extrusion, resulting in excessive clamping of the stainless steel pipe by the clamping plate 3, further improving the stability of the device.

[0030] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A high-precision butt welding machine for stainless steel pipes, comprising a support plate (1), characterized in that: The upper side of the support plate (1) is rotatably connected to a forward and reverse threaded screw (2), the outer side of the forward and reverse threaded screw (2) is threadedly connected to a clamping plate (3), the outer side of the support plate (1) is fixedly connected to a fixing ring (4), the outer side of the fixing ring (4) is fixedly connected to a first motor (5), the output end of the first motor (5) is fixedly connected to a gear (6), the outer side of the gear (6) is meshed with a first gear ring (7), the planes on both sides of the first gear ring (7) are fixedly connected to retaining rings (8), the retaining ring (8) and the fixing ring (4) are slidably connected, a laser welding assembly (9) is provided on the inner side of the first gear ring (7), the outer side of the forward and reverse threaded screw (2) is fixedly connected to a second gear ring (27), the outer side of the second gear ring (27) is meshed with a tooth plate (28), and the tooth plate (28) and the support plate (1) are slidably connected.

2. A high-precision butt welding machine for stainless steel pipes according to claim 1, characterized in that: The inner side of the support plate (1) is fixedly connected to a third motor (101), the output end of the third motor (101) is fixedly connected to a movable plate (10), the outer side of the support plate (1) is slidably connected to a fixed plate (11), one end of the fixed plate (11) is fixedly connected to a second motor (12), the output end of the second motor (12) is fixedly connected to an adjusting screw (13), the adjusting screw (13) and the support plate (1) are threadedly connected, the lower side of the support plate (1) is rotatably connected to a roller (14), the outer side of the fixed plate (11) is fixedly connected to a fixed block (15), and the movable plate (10) and the fixed block (15) are used in conjunction with each other.

3. A high-precision butt welding machine for stainless steel pipes according to claim 2, characterized in that: The outer side of the fixed block (15) is fixedly connected to a hydraulic cylinder (16), the output end of the hydraulic cylinder (16) is fixedly connected to a movable block (17), the inner side of the movable block (17) is provided with a T-shaped groove (18), the inner side of the T-shaped groove (18) is slidably connected to a T-shaped block (19), one end of the T-shaped block (19) is fixedly connected to a support rod (20), the outer side of the support rod (20) is fixedly connected to a circular plate (21), a sliding groove (22) is provided on the surface of the fixed block (15), the sliding groove (22) and the support rod (20) are slidably connected, and the circular plate (21) and the fixed block (15) are used in conjunction with each other.

4. A high-precision butt welding machine for stainless steel pipes according to claim 3, characterized in that: A guide groove (301) is provided on the inner side of the support rod (20), a mounting groove (23) is provided on the surface of the movable plate (10), a guide rod (24) is threadedly connected to the inner side of the mounting groove (23), and the guide rod (24) and the guide groove (201) are used in conjunction with each other.

5. A high-precision butt welding machine for stainless steel pipes according to claim 4, characterized in that: A groove (25) is provided on the inner side of the support rod (20), and a pulley (26) is slidably connected to the inner side of the groove (25).

6. A high-precision butt welding machine for stainless steel pipes according to claim 5, characterized in that: A movable screw (29) is fixedly connected to the outside of the first gear ring (7), a movable rod (30) is threadedly connected to the outside of the movable screw (29), and one end of the movable rod (30) is rotatably connected to a grinding pad (31).

7. A high-precision butt welding machine for stainless steel pipes according to claim 6, characterized in that: The surfaces of the movable screw rod (29) and the movable rod (30) are both provided with slots (32), the inner side of the slot (32) is slidably connected to an inserting rod (33), and the outer side of the inserting rod (33) is threadedly connected to a nut (34).

8. The high-precision butt welding machine for stainless steel pipes according to claim 7, characterized in that: One side of the support plate (1) is fixedly connected to a limiting plate (35), a limiting groove (36) is provided on the inner side of the fixed plate (11), and the limiting plate (35) and the limiting groove (36) are slidably connected.

9. A high-precision butt welding machine for stainless steel pipes according to claim 8, characterized in that: A triangular groove (37) is provided on the inner side of the tooth plate (28), a spring rod (38) is fixedly connected to the outer side of the support plate (1), and a triangular block (39) is fixedly connected to one end of the spring rod (38).

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