Rotary positioning and clamping device of tube sheet automatic welding machine

Abstract

This application provides a rotary positioning and clamping device for an automatic tube sheet welding machine, belonging to the field of tube sheet welding technology. It includes a base plate and further comprises: a bidirectional moving assembly disposed on the top of the base plate; a second support plate disposed on the moving end of the bidirectional moving assembly; a longitudinal rotating assembly disposed on the outer wall of the second support plate away from the bidirectional moving assembly; a first limiting plate disposed on the rotating end of the longitudinal rotating assembly, which drives the first limiting plate to rotate longitudinally; a transverse rotating assembly disposed inside the first limiting plate; and a rotating sleeve disposed inside the rotating end of the transverse rotating assembly, which drives the rotating sleeve to rotate laterally. In this application, the clamping assembly is driven by a driving assembly to perform multi-point clamping of the tube sheet, which can significantly improve the stability and uniformity of clamping and avoid tube sheet deformation or uneven pressure caused by single-point clamping.

Description

Technical Field

[0001] This invention relates to the field of tube sheet welding technology, and more specifically, to a rotary positioning and clamping device for an automatic tube sheet welding machine. Background Technology

[0002] Automatic tube sheet welding machines are key equipment in the manufacturing of pressure vessels, heat exchangers, and large pipelines. Their core task is to achieve high-precision welding between tube sheets and tube bodies. With the improvement of automation and intelligence, this device is developing towards higher precision, stronger adaptability, and higher safety. In the future, it will further promote the efficiency and welding quality of automatic tube sheet welding technology, providing a solid guarantee for the high-quality manufacturing of large pipelines and pressure vessels.

[0003] A search revealed a Chinese patent (publication number: CN221849143U) proposing an automatic tube sheet welding test plate clamping fixture, comprising a base plate, a clamping platform, a test plate to be processed, and a clamping structure. The clamping platform is fixedly connected to the top of the base plate, and the test plate to be processed is placed on top of the clamping platform. This utility model of an automatic tube sheet welding test plate clamping fixture can use a control board and a control motor to automatically drive the bolt to rotate, thereby causing the bolt to move inside the nut and abut against the test plate to be processed, thus completing the self-driving screw operation. At the same time, the presence of a buffer ring can slow down the speed and force of contact between the bolt and the test plate to be processed, thereby ensuring the safety of the test plate. Compared with existing clamping fixtures that rely solely on the screw as the clamping element, this device can automatically drive the screw while avoiding pressure from the screw on the test plate, making it convenient for users while ensuring the quality of the test plate.

[0004] While the aforementioned patents can achieve the detection function, they still have the following shortcomings in actual use: In practical use, the above-mentioned solution only fixes the bottom of the tube sheet. However, during welding, the pipe needs to be tightly pressed against the tube sheet. This process can lead to tube sheet displacement, causing deviations in the welding position. This displacement has multiple adverse effects on the tube sheet clamping device. First, the clamping device must withstand additional lateral forces or torques; if the design is not robust enough, the device may loosen or be damaged. Second, changes in the tube sheet position directly affect welding accuracy, leading to weld misalignment, poor continuity, or angular deviations, thus reducing weld quality. Furthermore, uneven stress on the clamps accelerates wear and reduces their service life. More importantly, tube sheet displacement may cause instability in the clamping device, increasing safety hazards.

[0005] Therefore, we have made improvements and proposed a rotary positioning clamping device for an automatic tube sheet welding machine to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a rotary positioning and clamping device for an automatic tube sheet welding machine to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: A rotary positioning clamping device for an automatic tube sheet welding machine includes a base plate and further includes: A two-way moving component is located on top of the base plate; The second support plate is mounted on the moving end of the bidirectional moving component. The longitudinal rotation component is located on the outer wall of the second support plate on the side away from the bidirectional moving component. The first limiting plate is set on the rotating end of the longitudinal rotation component, and the first limiting plate is driven to rotate longitudinally by the rotation component. A lateral rotation component is disposed inside the first limiting plate; A rotating sleeve is located inside the rotating end of the transverse rotating assembly, and the transverse rotating assembly drives the rotating sleeve to rotate laterally. The drive assembly is located inside the rotating sleeve; The clamping assembly is located inside the transverse rotation assembly. The transverse rotation assembly simultaneously drives the rotating sleeve, the drive assembly, and the clamping assembly to rotate laterally.

[0008] As a preferred technical solution of this application, the bidirectional moving assembly includes a first lead screw slide fixedly connected to one side of the top wall of the base plate and a first slide rail fixedly connected to the other side of the top wall of the base plate. A first support plate is fixedly connected to the top wall of the moving end of the first lead screw slide. A first slider is fixedly connected to the bottom wall of the first support plate on the side away from the first lead screw slide. The first slider is slidably connected to the first slide rail. A fixing plate is fixedly connected to the middle section of the top wall of the first support plate. A second lead screw slide is fixedly connected to the outer wall of the fixing plate. The moving end of the second lead screw slide is fixedly connected to the side wall of the second support plate.

[0009] As a preferred technical solution of this application, the longitudinal rotation assembly includes a first motor fixedly connected to the outer wall of the second support plate on the side away from the first lead screw slide. The output end of the first motor is fixedly connected to a transmission rod through the side wall of the second support plate. The transmission rod is rotatably connected to the second support plate. Synchronous toothed belts are provided on the outer sides of both ends of the second support plate. A first fixing frame is fixedly connected to the rotating end of the synchronous toothed belt on the side away from the transmission rod. The first fixing frame is rotatably connected to the second support plate. The opposite side of the first fixing frame is fixedly connected to a first limiting plate.

[0010] As a preferred technical solution of this application, the transverse rotation assembly includes a second motor fixedly connected to one side of the top wall of the first limiting plate, a worm gear rotating inside the first limiting plate fixedly connected to the output end of the second motor, a worm wheel rotating in the middle section inside the first limiting plate meshing with one side of the worm gear, and the worm wheel fixedly connected to the rotating sleeve.

[0011] As a preferred technical solution of this application, the driving assembly includes a third motor fixedly connected to the outer wall of the rotating sleeve and a slide groove formed on the inner side of the rotating sleeve. The output end of the third motor is fixedly connected to a threaded rod through the side wall of the rotating sleeve. A limiting plate is threadedly connected to the outer side of the threaded rod. The limiting plate is slidably connected to the slide groove. A limiting groove is formed on the outer wall of the limiting plate away from the third motor. A spring is fixedly connected to the inner side of the limiting plate. The end of the spring away from the limiting plate is fixedly connected to the side wall of the slide groove.

[0012] As a preferred technical solution of this application, the clamping assembly includes a threaded ring threaded to the inner side of the worm gear, a limiting ring fixedly connected to the side of the threaded ring away from the worm gear, a retaining ring fixedly connected to the inner side wall of the limiting ring, and a plurality of first clamping arms rotatably connected to the inner side of the limiting ring.

[0013] As a preferred technical solution of this application, a second fixing frame is fixedly connected to one side of the top wall of the base plate, a second limiting plate is fixedly connected to the top wall of the second fixing frame, a fourth fixing frame is fixedly connected to one side of the top wall of the second limiting plate, a fourth hydraulic rod is fixedly connected to the outer wall of the fourth fixing frame, a movable plate is fixedly connected to the output end of the fourth hydraulic rod through the side wall of the fourth fixing frame, and a plurality of limiting sleeves are rotatably connected to the top wall of the movable plate.

[0014] As a preferred technical solution of this application, a second slide rail is fixedly connected to the middle section of the bottom wall of the second limiting plate, a first hydraulic rod is fixedly connected to the inner side of the second slide rail, a sliding groove plate is fixedly connected to the output end of the first hydraulic rod, the sliding groove plate is slidably connected to the first hydraulic rod, and a third fixing frame is fixedly connected to the end of the sliding groove plate away from the bottom plate.

[0015] As a preferred technical solution of this application, a third slide rail is fixedly connected to the top wall of the third fixed frame, a second slider is slidably connected to the top wall of the third slide rail, a second support frame is fixedly connected to one outer wall of the third fixed frame, a second hydraulic rod is fixedly connected to the middle section of one outer wall of the second support frame, a first support frame is fixedly connected to the output end of the second hydraulic rod, the first support frame is fixedly connected to the second slider, a rotating frame is rotatably connected to the inner side of the top of the first support frame, and a third support plate is fixedly connected to the inner side of the rotating frame.

[0016] As a preferred technical solution of this application, the third support plate is fixedly connected to a limiting frame on the side near the bottom plate, a fixing rod is fixedly connected to the middle section of the inner side of the limiting frame, a plurality of third hydraulic rods are rotatably connected to the end of the fixing rod, a second clamping arm is rotatably connected to the output end of the third hydraulic rod, and the outer wall of the middle section of the second clamping arm is rotatably connected to the outer wall of the limiting frame.

[0017] In the scheme of this application: 1. By driving the clamping assembly with a drive component to perform multi-point clamping of the tube sheet, the stability and uniformity of clamping can be significantly improved, avoiding tube sheet deformation or uneven pressure caused by single-point clamping. This device can accurately position the tube sheet, ensuring accurate positioning during the welding process, thereby improving welding quality and precision. Automated operation reduces human error, improves production efficiency, and reduces workpiece damage, making it particularly suitable for mass production with high precision requirements. 2. The clamping assembly can be removed from the drive assembly and replaced via the threaded connection between the worm gear and the threaded ring. This simplifies maintenance and replacement, reduces downtime, and improves equipment availability. Furthermore, the system offers greater flexibility, allowing for the replacement of appropriate clamping assemblies based on the size and shape of different tube sheets to meet diverse production needs. This design also reduces maintenance costs, as only the clamping assembly needs to be replaced, without replacing the entire drive unit. Regular replacement of the clamping assembly also reduces wear on the drive assembly, extending the equipment's lifespan. 3. By cooperating with the bidirectional moving components, the lateral rotating components, and the longitudinal rotating components, the position, height, and angle of the clamping components can be adjusted in multiple directions. This allows the clamping components to be precisely positioned according to the shape and size of different tube sheets, ensuring accurate position and angle during the welding process and improving welding quality. At the same time, this design has strong adaptability and can handle various types of tube sheets, reducing reliance on special fixtures, improving system versatility, and the automated adjustment reduces human intervention, reduces errors, and improves operational safety. Furthermore, by quickly adjusting the position and angle of the clamping components, welding efficiency and production efficiency are improved. 4. The fourth hydraulic rod drives the moving plate and limiting sleeve to move, cooperating with the third slide rail, second slider, first support frame, rotating frame, and top structure to clamp the welded pipe and adjust the angle and position between the pipe and the tube sheet, ensuring precise clamping and fine-tuning, thus improving welding quality and stability. Secondly, the automated adjustment function reduces manual intervention, improving operational accuracy and efficiency. Furthermore, the system's adaptability and flexibility allow it to handle pipes of different sizes and shapes, enhancing the equipment's versatility. The hydraulic and structured adjustment mechanisms reduce equipment wear, improve durability, optimize the clamping and adjustment process, enhance production efficiency and operational safety, and ensure the equipment's reliability during long-term operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure in this invention. Figure 2 ; Figure 3 This is a schematic cross-sectional view of the first limiting plate in this invention; Figure 4 This is a partial three-dimensional structural diagram of the worm gear in this invention; Figure 5 This is a schematic cross-sectional view of the worm gear in this invention. Figure 1 ; Figure 6 This is a schematic cross-sectional view of the worm gear in this invention. Figure 2 ; Figure 7 This is a structural breakdown diagram of the threaded ring in this invention; Figure 8 This is a partial three-dimensional structural diagram of the second slide rail in this invention; Figure 9 This is a schematic cross-sectional view of the sliding groove plate in this invention; Figure 10 This is a partial three-dimensional structural diagram of the third slide rail in this invention; Figure 11 This is a partial three-dimensional structural diagram of the third hydraulic rod in this invention.

[0019] In the diagram: 1. Base plate; 11. First lead screw slide; 12. First support plate; 13. First slider; 14. First slide rail; 15. Fixed plate; 16. Second lead screw slide; 2. Second support plate; 21. First motor; 22. Transmission rod; 23. Synchronous toothed belt; 24. First fixed frame; 3. First limiting plate; 31. Second motor; 32. Worm gear; 33. Worm wheel; 34. Rotating sleeve; 35. Third motor; 36. Threaded rod; 37. Slide groove; 38. Limiting plate; 39. Limiting groove; 310. Spring; 4. Limiting ring; 41. Stop. 42. Threaded ring; 43. First clamping arm; 5. Second fixed frame; 51. Second limiting plate; 52. Second slide rail; 53. First hydraulic rod; 54. Sliding groove plate; 6. Third fixed frame; 61. Third slide rail; 62. Second slider; 63. First support frame; 64. Rotating frame; 65. Third support plate; 66. Second support frame; 67. Second hydraulic rod; 7. Limiting frame; 71. Fixed rod; 72. Third hydraulic rod; 73. Second clamping arm; 8. Fourth fixed frame; 81. Fourth hydraulic rod; 82. Moving plate; 83. Limiting sleeve. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please see Figure 1-11 This embodiment proposes a rotary positioning clamping device for an automatic tube sheet welding machine, including a base plate 1, and further comprising: A bidirectional moving component is installed on the top of the base plate 1; The second support plate 2 is disposed on the moving end of the bidirectional moving component; The longitudinal rotation component is located on the outer wall of the second support plate 2 on the side away from the bidirectional moving component; The first limiting plate 3 is disposed on the rotating end of the longitudinal rotation component, and the first limiting plate 3 is driven to rotate longitudinally by the rotation component. A lateral rotation component is disposed inside the first limiting plate 3; Rotating sleeve 34 is located inside the rotating end of the transverse rotating assembly, and the transverse rotating assembly drives the rotating sleeve 34 to rotate transversely. The drive assembly is located inside the rotating sleeve 34; The clamping assembly is located inside the transverse rotation assembly. The transverse rotation assembly simultaneously drives the rotating sleeve 34, the driving assembly, and the clamping assembly to rotate transversely.

[0022] like Figure 1-11 As shown, in a preferred embodiment, based on the above method, the bidirectional moving assembly further includes a first lead screw slide 11 (the first lead screw slide 11 is prior art, referring to existing lead screw slides, it will not be described) fixedly connected to one side of the top wall of the base plate 1, a first slide rail 14 fixedly connected to the other side of the top wall of the base plate 1, a first support plate 12 fixedly connected to the top wall of the moving end of the first lead screw slide 11, a first slider 13 fixedly connected to the bottom wall of the first support plate 12 away from the first lead screw slide 11, the first slider 13 being slidably connected to the first slide rail 14, a fixing plate 15 fixedly connected to the middle section of the top wall of the first support plate 12, a second lead screw slide 16 (the second lead screw slide 16 is prior art, referring to existing lead screw slides, it will not be described) fixedly connected to the outer wall of the fixing plate 15, and the moving end of the second lead screw slide 16 being fixedly connected to the side wall of the second support plate 2; The first lead screw slide 11 drives the first support plate 12 and the first slider 13 to move on the top of the first slide rail 14. At the same time, the first support plate 12 drives the top fixed plate 15, the second lead screw slide 16, and the structure outside the second support plate 2 to move horizontally in sync. The second lead screw slide 16 drives the second support plate 2 and the structure outside the second support plate 2 to rise and fall, thereby adjusting the height.

[0023] The longitudinal rotation assembly includes a first motor 21 fixedly connected to the outer wall of the second support plate 2 on the side away from the first lead screw slide 11. The output end of the first motor 21 is fixedly connected to a transmission rod 22 through the side wall of the second support plate 2. The transmission rod 22 is rotatably connected to the second support plate 2. Synchronous toothed belts 23 are provided on the outer sides of both ends of the second support plate 2. A first fixing frame 24 is fixedly connected to the rotating end of the synchronous toothed belt 23 on the side away from the transmission rod 22. The first fixing frame 24 is rotatably connected to the second support plate 2. The opposite side of the first fixing frame 24 is fixedly connected to the first limiting plate 3. The first motor 21 drives the transmission rod 22 to rotate, and the transmission rod 22 simultaneously drives the synchronous toothed belts 23 on both sides to drive the first fixed frame 24 on both sides to rotate synchronously. The first fixed frame 24 drives the first limiting plate 3 and the driving component and clamping component inside the first limiting plate 3 to rotate synchronously, thereby adjusting the angle of the tube plate.

[0024] The transverse rotation assembly includes a second motor 31 fixedly connected to one side of the top wall of the first limiting plate 3. The output end of the second motor 31 is fixedly connected to a worm 32 rotating inside the first limiting plate 3. One side of the worm 32 is meshed with a worm wheel 33 rotating in the middle section inside the first limiting plate 3. The worm wheel 33 is fixedly connected to the rotating sleeve 34. The second motor 31 drives the worm gear 32 to rotate, and the worm gear 32 drives the inner rotating sleeve 34 to rotate synchronously through the worm wheel 33.

[0025] The drive assembly includes a third motor 35 fixedly connected to the outer wall of the rotating sleeve 34 and a slide groove 37 opened on the inner side of the rotating sleeve 34. The output end of the third motor 35 passes through the side wall of the rotating sleeve 34 and is fixedly connected to a threaded rod 36. The outer side of the threaded rod 36 is threadedly connected to a limiting plate 38. The limiting plate 38 is slidably connected to the slide groove 37. A limiting groove 39 is opened on the outer wall of the limiting plate 38 away from the third motor 35. A spring 310 is fixedly connected to the inner side of the limiting plate 38. The end of the spring 310 away from the limiting plate 38 is fixedly connected to the side wall of the slide groove 37. The third motor 35 drives the threaded rod 36 to rotate through the rotating sleeve 34 inside the limiting plate 38, thereby causing the limiting plate 38 to slide linearly inside the slide groove 37 (the side wall of the slide groove 37 has a limiting groove, and the outside of the limiting plate 38 is provided with a limiting block that is fixedly connected to it. Through the cooperation of the limiting groove and the limiting block, the limiting plate 38 can only slide inside the slide groove 37 and cannot rotate), and drives the limiting groove 39 to move synchronously.

[0026] The clamping assembly includes a threaded ring 42 threaded to the inner side of the worm gear 33, a limit ring 4 fixedly connected to the side of the threaded ring 42 away from the worm gear 33, a retaining ring 41 fixedly connected to the inner wall of the limit ring 4, and a plurality of first clamping arms 43 rotatably connected to the inner side of the limit ring 4. During the lateral movement of the limiting groove 39 driven by the limiting plate 38, the end of the first clamping arm 43 located inside the limiting groove 39 moves, causing the first clamping arm 43 to rotate around the connection point with the limiting ring 4, thereby clamping and fixing the tube sheet placed inside the limiting ring 4. At the same time, the retaining ring 41 is used to support the tube sheet and ensure its stability. The threaded connection between the threaded ring 42 and the worm gear 33 allows for the disassembly and installation of the entire clamping assembly. During installation, firstly, rotate the first clamping arm 43 to rotate the inner end of the first clamping arm 43 outward to create space and fit it onto the outside of the limiting plate 38. Then, rotate the first clamping arm 43 in the opposite direction to insert the inner end of the first clamping arm 43 into the limiting groove 39, completing the docking of the limiting groove 39 and the first clamping arm 43. Then, insert the threaded ring 42 into the inside of the worm gear 33 and rotate the limiting ring 4. The limiting ring 4 drives the threaded ring 42 to rotate inside the worm gear 33, completing the connection.

[0027] A second fixed frame 5 is fixedly connected to one side of the top wall of the base plate 1. A second limiting plate 51 is fixedly connected to the top wall of the second fixed frame 5. A fourth fixed frame 8 is fixedly connected to one side of the top wall of the second limiting plate 51. A fourth hydraulic rod 81 is fixedly connected to the outer wall of the fourth fixed frame 8. A movable plate 82 is fixedly connected to the output end of the fourth hydraulic rod 81 through the side wall of the fourth fixed frame 8. Multiple limiting sleeves 83 are rotatably connected to the top wall of the movable plate 82. The fourth hydraulic rod 81 drives the moving plate 82 to slide on the top wall of the second limiting plate 51 with the fourth fixed frame 8 as the stress point, and the limiting sleeve 83 on the top of the moving plate 82 is used to limit the end of the pipe near the clamping assembly.

[0028] A second slide rail 52 is fixedly connected to the middle section of the bottom wall of the second limiting plate 51. A first hydraulic rod 53 is fixedly connected to the inner side of the second slide rail 52. A sliding groove plate 54 is fixedly connected to the output end of the first hydraulic rod 53. The sliding groove plate 54 is slidably connected to the first hydraulic rod 53. A third fixing frame 6 is fixedly connected to the end of the sliding groove plate 54 away from the bottom plate 1. The first hydraulic rod 53 drives the sliding groove plate 54 and the third fixed frame 6 to slide on the outside of the second slide rail 52 with the second slide rail 52 as the stress point, thereby driving the structure on the top of the third fixed frame 6 to move, and the pipe can be moved and rotated through the structure on the top of the third fixed frame 6.

[0029] The top wall of the third fixed frame 6 is fixedly connected to the third slide rail 61, the top wall of the third slide rail 61 is slidably connected to the second slider 62, the outer wall of one side of the third fixed frame 6 is fixedly connected to the second support frame 66, the middle section of the outer wall of one side of the second support frame 66 is fixedly connected to the second hydraulic rod 67, the output end of the second hydraulic rod 67 is fixedly connected to the first support frame 63, the first support frame 63 is fixedly connected to the second slider 62, the inner side of the top of the first support frame 63 is rotatably connected to the rotating frame 64, and the inner side of the rotating frame 64 is fixedly connected to the third support plate 65. The second hydraulic rod 67 drives the second slider 62, the first support frame 63, the rotating frame 64, the third support plate 65, and the structure outside the third support plate 65 to move along the third slide rail 61 with the second support frame 66 as the stress point.

[0030] The third support plate 65 is fixedly connected to the limit frame 7 on the side near the bottom plate 1. The middle section of the inner side of the limit frame 7 is fixedly connected to the fixed rod 71. The end of the fixed rod 71 is rotatably connected to multiple third hydraulic rods 72. The output end of the third hydraulic rod 72 is rotatably connected to the second clamping arm 73. The outer wall of the middle section of the second clamping arm 73 is rotatably connected to the outer wall of the limit frame 7. The third hydraulic rod 72 drives the second clamping arm 73 to rotate outside the limit frame 7 with the end of the fixed rod 71 as the stress point, thereby clamping and fixing the end of the pipe away from the clamping assembly. At the same time, the second slider 62 drives it to move, thereby adjusting the relative angle between the pipe and the tube sheet. Meanwhile, the first hydraulic rod 53 drives it to move, thereby pushing the pipe closer to or away from the tube sheet.

[0031] Specifically, the rotary positioning and clamping device of this automatic tube sheet welding machine is used as follows: First, the threaded ring 42 on the outer side of the corresponding limiting ring 4 is installed on the inner side of the worm gear 33. Then, the corresponding tube sheet is placed on the inner side of the limiting ring 4. After that, the limiting plate 38 is driven to move to the side of the third motor 35 by the threaded rod 36 through the third motor 35. The inner end of the first clamping arm 43 is rotated by the limiting groove 39 through the limiting plate 38, so that the tube sheet is clamped and fixed by the first clamping arm 43. Then, the pipes to be welded are inserted into the limiting sleeve 83 in sequence. Then, the first hydraulic rod 53 and the second hydraulic rod 67 drive the limiting frame 7 to align with the end of the pipe. Then, the third hydraulic rod 72 drives the second clamping arm 73 to rotate outside the limiting frame 7 with the end of the fixed rod 71 as the stress point, thereby clamping and fixing the end of the pipe. Then, the first hydraulic rod 53 pulls the sliding groove plate 54 and the third fixed frame 6 with the limiting frame 7 at the top and the surrounding structure to move to one side of the tube sheet with the second slide rail 52 as the stress point. Simultaneously, the first screw slide 11 drives the tube sheet to move synchronously to one side of the pipeline using the first support plate 12 and the first slider 13, and the second screw slide 16 drives the second support plate 2 and the tube sheet to rise and fall, so that the height of the tube sheet corresponds to the height of the pipeline. Then, the second motor 31 drives the worm gear 32 to rotate, and the worm wheel 33 drives the inner rotating sleeve 34 to rotate, thereby adjusting the lateral angle of the tube sheet. At the same time, the first motor 21 drives the transmission rod 22 to rotate, and then the synchronous toothed belts 23 on both sides drive the first fixed frame 24 and the first limiting plate 3 to rotate longitudinally, thereby adjusting the longitudinal angle between the tube sheet and the pipe, so that the welding position and relative angle between the tube sheet and the pipe can be precisely adjusted.

[0032] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary positioning and clamping device for an automatic tube sheet welding machine, comprising a base plate (1), characterized in that, Also includes: A bidirectional moving component is located on the top of the base plate (1); The second support plate (2) is disposed on the moving end of the bidirectional moving component; The longitudinal rotation component is located on the outer wall of the second support plate (2) away from the bidirectional moving component; The first limiting plate (3) is set on the rotating end of the longitudinal rotating component, and the first limiting plate (3) is driven to rotate longitudinally by the rotating component; A lateral rotation component is located inside the first limiting plate (3); The rotating sleeve (34) is located inside the rotating end of the transverse rotating assembly, and the transverse rotating assembly drives the rotating sleeve (34) to rotate transversely. The drive assembly is located inside the rotating sleeve (34); The clamping component is located inside the transverse rotation component. The transverse rotation component simultaneously drives the rotating sleeve (34), the driving component, and the clamping component to rotate transversely.

2. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 1, characterized in that, The bidirectional moving assembly includes a first lead screw slide (11) fixedly connected to one side of the top wall of the base plate (1) and a first slide rail (14) fixedly connected to the other side of the top wall of the base plate (1). A first support plate (12) is fixedly connected to the top wall of the moving end of the first lead screw slide (11). A first slider (13) is fixedly connected to the bottom wall of the first support plate (12) away from the first lead screw slide (11). The first slider (13) is slidably connected to the first slide rail (14). A fixing plate (15) is fixedly connected to the middle section of the top wall of the first support plate (12). A second lead screw slide (16) is fixedly connected to the outer wall of the fixing plate (15). The moving end of the second lead screw slide (16) is fixedly connected to the side wall of the second support plate (2).

3. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 2, characterized in that, The longitudinal rotation assembly includes a first motor (21) fixedly connected to the outer wall of the second support plate (2) away from the first lead screw slide (11). The output end of the first motor (21) is fixedly connected to a transmission rod (22) through the side wall of the second support plate (2). The transmission rod (22) is rotatably connected to the second support plate (2). Synchronous toothed belts (23) are provided on the outer sides of both ends of the second support plate (2). The rotating end of the synchronous toothed belt (23) away from the transmission rod (22) is fixedly connected to a first fixing frame (24). The first fixing frame (24) is rotatably connected to the second support plate (2). The opposite side of the first fixing frame (24) is fixedly connected to the first limiting plate (3).

4. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 3, characterized in that, The transverse rotation assembly includes a second motor (31) fixedly connected to one side of the top wall of the first limiting plate (3). The output end of the second motor (31) is fixedly connected to a worm (32) rotating inside the first limiting plate (3). One side of the worm (32) is meshed with a worm wheel (33) rotating in the middle section inside the first limiting plate (3). The worm wheel (33) is fixedly connected to the rotating sleeve (34).

5. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 4, characterized in that, The drive assembly includes a third motor (35) fixedly connected to the outer wall of the rotating sleeve (34) and a slide groove (37) opened on the inner side of the rotating sleeve (34). The output end of the third motor (35) is fixedly connected to a threaded rod (36) through the side wall of the rotating sleeve (34). A limiting plate (38) is threadedly connected to the outer side of the threaded rod (36). The limiting plate (38) is slidably connected to the slide groove (37). A limiting groove (39) is opened on the outer wall of the limiting plate (38) away from the third motor (35). A spring (310) is fixedly connected to the inner side of the limiting plate (38). The end of the spring (310) away from the limiting plate (38) is fixedly connected to the side wall of the slide groove (37).

6. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 5, characterized in that, The clamping assembly includes a threaded ring (42) threaded to the inside of the worm gear (33), a limiting ring (4) fixedly connected to the side of the threaded ring (42) away from the worm gear (33), a retaining ring (41) fixedly connected to the inner wall of the limiting ring (4), and a plurality of first clamping arms (43) rotatably connected to the inner side of the limiting ring (4).

7. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 6, characterized in that, A second fixed frame (5) is fixedly connected to one side of the top wall of the base plate (1). A second limiting plate (51) is fixedly connected to the top wall of the second fixed frame (5). A fourth fixed frame (8) is fixedly connected to one side of the top wall of the second limiting plate (51). A fourth hydraulic rod (81) is fixedly connected to the outer wall of the fourth fixed frame (8). A movable plate (82) is fixedly connected to the output end of the fourth hydraulic rod (81) through the side wall of the fourth fixed frame (8). A plurality of limiting sleeves (83) are rotatably connected to the top wall of the movable plate (82).

8. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 7, characterized in that, The second limiting plate (51) is fixedly connected to the middle section of the bottom wall of the second slide rail (52), and the second slide rail (52) is fixedly connected to the inner side of the first hydraulic rod (53). The output end of the first hydraulic rod (53) is fixedly connected to the sliding groove plate (54). The sliding groove plate (54) is slidably connected to the first hydraulic rod (53). The end of the sliding groove plate (54) away from the bottom plate (1) is fixedly connected to the third fixing frame (6).

9. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 8, characterized in that, The top wall of the third fixed frame (6) is fixedly connected to a third slide rail (61), the top wall of the third slide rail (61) is slidably connected to a second slider (62), the outer wall of one side of the third fixed frame (6) is fixedly connected to a second support frame (66), the middle section of the outer wall of one side of the second support frame (66) is fixedly connected to a second hydraulic rod (67), the output end of the second hydraulic rod (67) is fixedly connected to a first support frame (63), the first support frame (63) is fixedly connected to the second slider (62), the inner side of the top of the first support frame (63) is rotatably connected to a rotating frame (64), and the inner side of the rotating frame (64) is fixedly connected to a third support plate (65).

10. The rotary positioning and clamping device for an automatic tube sheet welding machine according to claim 9, characterized in that, The third support plate (65) is fixedly connected to a limiting frame (7) on the side near the bottom plate (1). A fixing rod (71) is fixedly connected to the middle section of the inner side of the limiting frame (7). Multiple third hydraulic rods (72) are rotatably connected to the end of the fixing rod (71). A second clamping arm (73) is rotatably connected to the output end of the third hydraulic rod (72). The outer wall of the middle section of the second clamping arm (73) is rotatably connected to the outer wall of the limiting frame (7).

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