A welding apparatus for evaporator tube processing

The use of an automatic centering and clamping device enables efficient welding of large evaporator cylindrical tubes, solving the problem of low efficiency in welding preparation in existing technologies and improving welding quality and efficiency.

CN120862188BActive Publication Date: 2026-07-21JIANGSU JIATAI EVAPORATION CRYSTALLIZATION EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU JIATAI EVAPORATION CRYSTALLIZATION EQUIP
Filing Date
2025-08-14
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing large evaporators require multiple fine-tuning adjustments when welding the cylindrical tube, resulting in low efficiency in welding preparation.

Method used

The welding equipment employs automatic centering and clamping, including a welding adjustment table, a feeding platform, a cylinder transferor, an automatic centerer, and a welding robot. It achieves automatic alignment and fixation of the cylinder through support limit rods, a power support chamber, a multi-directional threaded rod, and an expansion clamp.

Benefits of technology

It improves welding preparation efficiency, reduces human resource input, ensures welding quality and flexibility, and adapts to cylinders of different diameters.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a welding equipment for evaporator pipe machining and belongs to the technical field of evaporator welding. The welding equipment for evaporator pipe machining comprises a welding adjusting table, the inner wall of the groove at the surface position of the welding adjusting table is fixedly connected with a plurality of uniformly distributed supporting limiting rods, a feeding platform is slidingly connected at the position of the plurality of supporting limiting rods, a cylinder transfer device for conveying a cylinder is fixedly connected to the surface of the feeding platform, a supporting platform is fixedly connected to one side of the surface of the welding adjusting table, a power supporting bin is fixedly connected at the position above the supporting platform, a driving motor is fixedly connected to the inner wall of the power supporting bin, and an automatic centering device for aligning and clamping the cylinder is fixedly connected to the side of the power supporting bin close to the cylinder transfer device. The automatic centering device can be used for concentric positioning and fixing of two cylinders to be welded, the welding seam position is aligned and neat, the welding quality can be effectively improved, and the efficiency of the preparation work before welding is improved.
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Description

Technical Field

[0001] This invention belongs to the field of large evaporator welding technology, specifically relating to a welding equipment for processing evaporator tubes. Background Technology

[0002] Large-scale evaporators are industrial devices used for large-scale liquid concentration, solvent recovery, or wastewater treatment, and are widely used in chemical, food, pharmaceutical, and environmental protection industries. Their core principle is to concentrate the solute or separate components by heating the liquid to evaporate the solvent (usually water).

[0003] The evaporation chamber of a large evaporator is mostly a large cylindrical structure, which requires welding multiple cylindrical sections to form the evaporation chamber. In the existing technology, when welding two cylindrical sections, a clamping structure is needed to fix and hold the outer wall of the cylindrical section. After clamping, the clamping mechanism needs to be adjusted to align the welding joints of the cylindrical sections before welding. In order to ensure the welding quality and ensure that the welding joints are fully aligned, the fixing structure needs to be fine-tuned multiple times. Therefore, the preparation work before welding is inefficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an efficient welding device with automatic centering and fixing clamping.

[0005] The technical solution adopted to solve the above technical problems is: a welding equipment for processing evaporator tubes, including a welding adjustment table, wherein a plurality of evenly distributed support and limiting rods are fixedly connected to the inner wall of the groove on the surface of the welding adjustment table, and a feeding platform is slidably connected through the plurality of support and limiting rods, and a cylinder transfer device for conveying cylinders is fixedly connected to the surface of the feeding platform.

[0006] Through the above technical solution, the welding adjustment table can bring two cylinders to be welded together, align the weld seams, and fix the two cylinders. After fixing, welding can be carried out. The support limit rod can support and limit the feeding platform, allowing the feeding platform to slide in the horizontal direction. The feeding platform can support the cylinder bracket and transport and adjust the two cylinders to be welded. The cylinder transfer device supports and binds the cylinders to be transported.

[0007] A support platform is fixedly connected to one side of the surface of the welding adjustment table. A power support chamber is fixedly connected through the support platform. A drive motor is fixedly connected to the inner wall of the power support chamber. An automatic centering device for aligning and clamping the cylinder is fixedly connected to the side of the power support chamber near the cylinder transfer device.

[0008] Through the above technical solution, the support platform can provide fixed support for the power support chamber, which in turn can provide fixed support for the automatic centerer. The power support chamber has a drive motor fixed inside, which provides power to the multi-directional threaded rod inside the automatic centerer. The automatic centerer can support and fix the inner walls of the two cylinders, keeping the two cylinders concentric, thus achieving corresponding cylinder welds and effectively improving welding quality.

[0009] Furthermore, an electric slide rail is fixedly connected to one side wall of the welding adjustment table, a sliding platform is fixedly connected to the slide of the electric slide rail, and a welding robot for welding is fixedly connected to the upper surface of the sliding platform.

[0010] Through the above technical solution, the electric slide rail provides power to the sliding platform, which allows the welding robot to slide horizontally and adjust the welding position, making the welding more flexible. The sliding platform can fix the welding robot in place.

[0011] Furthermore, the cylindrical transfer device includes a cylindrical bracket fixedly connected to the surface of the feeding platform. The surface of the cylindrical bracket is arc-shaped. Two symmetrically arranged adaptation grooves are opened on both sides of the cylindrical bracket. A fixing strap is fixedly connected to one side of the lower surface of the cylindrical bracket. One end of the fixing strap is provided with a fixing device for pressing and fixing. The fixing device is fixedly connected to the lower surface of the cylindrical bracket.

[0012] Through the above technical solution, the cylindrical bracket has an arc-shaped surface that can drag and drop cylindrical tubes of different diameters and deliver the cylindrical tube to be welded to the position of the automatic centerer. The adapting groove allows the fixing strap to fully act on the outer wall of the cylindrical tube to be delivered, preventing the cylindrical tube from shifting and falling during delivery. The fixing device allows the fixing strap to be tightened and fully fixed to the cylindrical tube.

[0013] Furthermore, a winch is fixedly connected to the bottom wall of the welding adjustment table near the support platform, and a winch wheel is fixedly connected to the drive end of the winch, and the winch wheel is fixedly connected to the bottom wall of the welding adjustment table.

[0014] Through the above technical solution, the winch provides power for the movement of the feeding platform. When the winch provides power, the winch wheel rotates, and the feeding platform moves horizontally by pulling the hook and the steel rope.

[0015] Furthermore, a pull hook is fixedly connected to the lower surface of the feeding platform, and a pull steel rope is provided between the pull hook and the winch.

[0016] The above technical solution allows pulling the steel rope to connect the pulling hook to the winch, thus powering the feeding platform.

[0017] Furthermore, the automatic centering device includes a fixed support cylinder that is fixedly connected to the side of the power support chamber near the feeding platform. A multi-directional threaded rod is rotatably connected to the inner side of the fixed support cylinder, and the multi-directional threaded rod is rotatably connected to the inner wall of the power support chamber. The multi-directional threaded rod is fixedly connected to the drive end of the drive motor inside the power support chamber.

[0018] Through the above technical solution, the fixed support cylinder can support the multi-directional threaded rod, and a limiting through groove is set at the fixed support cylinder position. The multi-directional threaded rod is divided into two parts, and each part is provided with two threads facing different directions, so that the thread adjustment blocks at the same set of expansion clamp positions move in opposite directions, so that the expansion clamps can be opened or closed, which facilitates the adjustment of the expansion clamps. The drive motor can provide power for the multi-directional threaded rod.

[0019] Furthermore, two sets of limiting through slots are provided through the outer wall of the fixed support cylinder, and expansion clamps are provided at the positions of both sets of limiting through slots. The expansion clamps are adjustable via multi-directional threaded rods. Through the above technical solution, the limiting through groove facilitates the installation and limiting of the expansion clamp. When the expansion clamp expands, it can support and clamp cylinders with different inner diameters. When it closes, it can release the welded cylinder. Moreover, the two sets of expansion clamps are concentrically set, so that the cylinder can achieve automatic centering when fixed.

[0020] Furthermore, each of the expansion clamps includes two threaded adjustment blocks that are threadedly connected to the multi-directional threaded rod. A rotating separation ring is rotatably connected to one side of the two threaded adjustment blocks that are close to each other. Limit adjustment grooves are formed on the surface of the two threaded adjustment blocks. A lifting threaded rod is rotatably connected to the bottom wall of the limit adjustment groove. A limit sliding plate is slidably connected to the inner wall of the limit adjustment groove. The lifting threaded rod is threadedly connected to the limit sliding plate, and a rotating knob is fixedly connected to the top of the lifting threaded rod.

[0021] Through the above technical solution, the threaded adjusting block can be pushed and adjusted by the multi-directional threaded rod. When the threaded adjusting block loses its limit, the rotating separation ring causes the threaded adjusting block to rotate, and the rotating separation ring rotates relative to the threaded adjusting block, which can avoid affecting the normal use of the outer expansion plate. The limit adjustment groove can provide space for adjusting the lifting threaded rod, and the limit adjustment groove can adjust the limit slide in the vertical direction, so that the limit slide is limited by the limit through groove or loses its limit. When the limit slide is limited, the threaded adjusting block can move horizontally. When the limit slide is no longer limited, the threaded adjusting block no longer moves and can rotate with the multi-directional threaded rod. The rotating knob can adjust the lifting threaded rod, and the highest point of the rotating knob is not higher than the highest point of the rotating separation ring.

[0022] Furthermore, two symmetrically arranged limiting rotation grooves are provided on the outer wall of the rotating separation ring. Supporting limiting plates are rotatably connected to the limiting rotation grooves. The two supporting limiting plates on the same side are rotatably connected to an outer expansion plate at the end away from the limiting rotation groove. The outer side of the outer expansion plate is arc-shaped.

[0023] Through the above technical solution, the limiting rotation groove can rotate the support limiting plate. When the two threaded adjusting blocks of the same set of expansion clamps approach or move away from each other, the included angle of the two support limiting plates on the same side changes, so that the outer expansion plate expands outward or closes inward, thereby supporting and fixing the cylinder. In addition, the outer wall of the outer expansion plate is provided with a rubber pad, which can effectively prevent the inner side of the cylinder from being crushed.

[0024] The beneficial effects of the present invention are as follows: (1) By setting up a cylindrical transfer device, the cylindrical cylinders conveyed by the conveyor belt fall on the surface of the cylindrical bracket on the arc-shaped surface, so that the cylindrical cylinders roll down to the bottom position of the cylindrical bracket, so that the cylindrical cylinders are automatically positioned and quickly fixed by the fixing straps, and the cylindrical cylinders are transported to the position of the automatic centerer, which effectively improves the efficiency of feeding, reduces the investment of lifting equipment and human resources, and is simple and convenient to operate; (2) By setting up an automatic centerer, the present invention can place two cylindrical cylinders to be welded on the outside of the fixed support cylinder, and use the expansion clamp to expand and support the inner wall of the cylindrical cylinders of different diameters, so that the cylindrical cylinders can be quickly centered, which effectively improves the efficiency of fixed installation, and after one set is expanded, the corresponding adjusting thread block can rotate without moving, and the expansion clamp of the other set continues to expand, making it more adaptable. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a welding device for processing evaporator tubes according to the present invention; Figure 2 This is a three-dimensional structural diagram of the welding adjustment table of a welding equipment for processing evaporator tubes according to the present invention; Figure 3 This is an exploded first-view structural diagram of the welding adjustment table of a welding equipment for processing evaporator tubes according to the present invention; Figure 4 This is an exploded second-view structural diagram of the welding adjustment table of a welding equipment for processing evaporator tubes according to the present invention; Figure 5 This is a three-dimensional structural diagram of an automatic centerer for a welding equipment used in evaporator tube processing according to the present invention; Figure 6 This is an internal structural diagram of the automatic centerer of a welding equipment for processing evaporator tubes according to the present invention; Figure 7 This is an assembly drawing of the rotating separation ring of a welding device for processing evaporator tubes according to the present invention; Figure 8 This is a structural diagram of a cylindrical transfer device for a welding apparatus used in evaporator tube processing according to the present invention.

[0026] Reference numerals: 1. Welding adjustment table; 2. Support limit rod; 3. Fixing strap; 4. Cylindrical bracket; 5. Automatic centerer; 50. Expansion clamp; 500. Outer expansion plate; 501. Limiting slide plate; 502. Supporting limit plate; 503. Limiting rotation groove; 504. Rotating knob; 505. Limiting adjustment groove; 506. Threaded adjusting block; 507. Rotating separation ring; 508. Lifting threaded rod; 51. Fixed support cylinder; 52. Limiting through groove; 53. Multi-directional threaded rod; 6. Welding robot; 7. Power support chamber; 8. Support platform; 9. Electric slide rail; 10. Sliding platform; 11. Feeding platform; 12. Pull hook; 13. Pulling steel rope; 14. Winch; 15. Winch reel; 16. Adaptation groove; 17. Fixer. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figure 1-8 As shown, a welding device for processing evaporator tubes according to this embodiment includes a welding adjustment table 1. The device is characterized by: a plurality of evenly distributed support and limiting rods 2 fixedly connected to the inner wall of a groove on the surface of the welding adjustment table 1; a feeding platform 11 slidably connected to the positions of the support and limiting rods 2; and a cylinder transfer device for conveying cylinders fixedly connected to the surface of the feeding platform 11. The welding adjustment table 1 can bring two cylinders to be welded together, align the weld seams, and fix the two cylinders. After fixing, welding is performed. The support and limiting rods 2 can support and limit the feeding platform 11, allowing it to slide horizontally. The feeding platform 11 can support the cylinder bracket 4 and adjust the conveying of the two cylinders to be welded. The cylinder transfer device supports and binds the cylinders to be conveyed.

[0029] The cylindrical transfer device includes a cylindrical bracket 4 fixedly connected to the surface of the feeding platform 11. The surface of the cylindrical bracket 4 is arc-shaped. Two symmetrically arranged adaptation grooves 16 are opened on both sides of the cylindrical bracket 4. A fixing strap 3 is fixedly connected to one side of the lower surface of the cylindrical bracket 4. A fixing device 17 for pressing and fixing is provided at one end of the fixing strap 3. The fixing device 17 is fixedly connected to the lower surface of the cylindrical bracket 4. The arc-shaped surface of the cylindrical bracket 4 can drag and drop cylinders of different diameters and deliver the cylinder to be welded to the position of the automatic centerer 5. The adaptation groove 16 can make the fixing strap 3 fully act on the outer wall of the cylinder to be transported, so as to prevent the cylinder from shifting and falling during transport. The fixing device 17 can make the fixing strap 3 fully fixed after being tightened and acting on the cylinder.

[0030] A support platform 8 is fixedly connected to one side of the surface of the welding adjustment table 1. A power support chamber 7 is fixedly connected through the support platform 8. A drive motor is fixedly connected to the inner wall of the power support chamber 7. An automatic centering device 5 for aligning and clamping the cylinder is fixedly connected to the side of the power support chamber 7 near the cylinder transfer device. The support platform 8 can provide fixed support for the power support chamber 7. The power support chamber 7 can provide fixed support for the automatic centering device 5. The drive motor is fixed inside the power support chamber 7 and provides power to the multi-directional threaded rod 53 inside the automatic centering device 5. The automatic centering device 5 can support and fix the inner walls of the two cylinders and keep the two cylinders in a concentric state, so as to achieve the alignment of the cylinder welds and effectively improve the welding quality.

[0031] The automatic centering device 5 includes a fixed support cylinder 51 fixedly connected to the side of the power support chamber 7 near the feeding platform 11. A multi-directional threaded rod 53 is rotatably connected to the inner side of the fixed support cylinder 51, and the multi-directional threaded rod 53 is rotatably connected through the inner wall of the power support chamber 7. The multi-directional threaded rod 53 is fixedly connected to the drive end of the drive motor inside the power support chamber 7. The fixed support cylinder 51 can support the multi-directional threaded rod 53, and a limiting through groove 52 is provided at the position of the fixed support cylinder 51. The multi-directional threaded rod 53 is divided into two parts, and each part is provided with two threads facing different directions, so that the thread adjustment blocks 506 at the same position of the expansion clamp 50 move in opposite directions, so that the expansion clamp 50 unfolds or closes, which facilitates the adjustment of the expansion clamp 50. The drive motor can provide power to the multi-directional threaded rod 53.

[0032] Two sets of limiting through slots 52 are provided through the outer wall of the fixed support cylinder 51. An expansion clamp 50 is provided at the position of each of the two sets of limiting through slots 52. The expansion clamp 50 is adjusted by a multi-directional threaded rod 53. The limiting through slots 52 facilitate the installation and limiting of the expansion clamp 50. When the expansion clamp 50 expands, it can support and clamp cylinders with different inner diameters. When it is closed, it can release the welded cylinder. The two sets of expansion clamps 50 are concentrically arranged, so that the cylinder can be automatically centered when fixed.

[0033] Each expansion clamp 50 includes two threaded adjusting blocks 506 that are threadedly connected to a multi-directional threaded rod 53. A rotating separation ring 507 is rotatably connected to one side of the two threaded adjusting blocks 506 that is close to each other. Limit adjustment grooves 505 are formed on the surfaces of the two threaded adjusting blocks 506. A lifting threaded rod 508 is rotatably connected to the bottom wall of the limit adjustment groove 505. A limit sliding plate 501 is slidably connected to the inner wall of the limit adjustment groove 505. The lifting threaded rod 508 is threadedly connected to the limit sliding plate 501, and a rotating knob 504 is fixedly connected to the top of the lifting threaded rod 508. The threaded adjusting blocks 506 can be pushed and adjusted via the multi-directional threaded rod 53. When the threaded adjusting blocks 506 lose their limit position, the rotating separation ring 507 causes the threaded adjusting blocks 506 to rotate. The relative rotation of the rotating separation ring 507 and the threaded adjustment block 506 can avoid affecting the normal use of the outer expansion plate 500. The limit adjustment groove 505 can provide space for adjusting the lifting threaded rod 508, and the limit adjustment groove 505 can adjust the limit slide plate 501 in the vertical direction, so that the limit slide plate 501 is limited by the limit through groove 52 or is not limited. When the limit slide plate 501 is limited, the threaded adjustment block 506 can move horizontally. When the limit slide plate 501 is no longer limited, the threaded adjustment block 506 will no longer move and can rotate with the multi-directional threaded rod 53. The rotating knob 504 can adjust the lifting threaded rod 508, and the highest point of the rotating knob 504 is not higher than the highest point of the rotating separation ring 507.

[0034] Two symmetrically arranged limiting rotation grooves 503 are provided on the outer wall of the rotating separation ring 507. Supporting limiting plates 502 are rotatably connected to the limiting rotation grooves 503. The two supporting limiting plates 502 on the same side are rotatably connected to an outer expansion plate 500 at the end away from the limiting rotation grooves 503. The outer side of the outer expansion plate 500 is arc-shaped. The limiting rotation grooves 503 can rotate the supporting limiting plates 502. When the two threaded adjusting blocks 506 of the same set of expansion clamps 50 approach or move away from each other, the included angle of the two supporting limiting plates 502 on the same side changes, so that the outer expansion plate 500 expands outward or closes inward, thereby supporting and fixing the cylinder. The outer wall of the outer expansion plate 500 is provided with a rubber pad, which can effectively prevent the inner side of the cylinder from being crushed. The outer expansion plate 500 is elastic when it expands outward, providing sufficient time for adjusting the rotating knob 504.

[0035] An electric slide rail 9 is fixedly connected to one side wall of the welding adjustment table 1. A sliding platform 10 is fixedly connected to the slide of the electric slide rail 9. A welding robot 6 for welding is fixedly connected to the upper surface of the sliding platform 10. The electric slide rail 9 provides power to the sliding platform 10. The electric slide rail 9 allows the welding robot 6 to slide in the horizontal direction to adjust the welding position, making the welding more flexible. The sliding platform 10 can fix the welding robot 6 in place.

[0036] A winch 14 is fixedly connected to the bottom wall of the welding adjustment table 1 near the support platform 8. A winch wheel 15 is fixedly connected to the drive end of the winch 14 and is fixedly connected to the bottom wall of the welding adjustment table 1. The winch 14 provides power for the movement of the feeding platform 11. When the winch 14 provides power, the winch wheel 15 rotates, and the feeding platform 11 moves horizontally by pulling the hook 12 and pulling the steel rope 13.

[0037] A pull hook 12 is fixedly connected to the lower surface of the feeding platform 11. A pull steel rope 13 is provided between the pull hook 12 and the winch 15. The pull steel rope 13 can connect the pull hook 12 and the winch 15, so that the feeding platform 11 can obtain power.

[0038] The working principle of this embodiment is as follows: the present invention is set at the end of the conveyor belt, so that the cylinder transferor is facing the end of the conveyor belt. The two cylinders to be welded are transported to the cylinder transferor position, so that the cylinders slide down to the surface of the cylinder bracket 4. The surface of the cylinder bracket 4 is arc-shaped, so that the cylinders roll down to the bottom of the cylinder bracket 4. The cylinders on the surface of the cylinder bracket 4 are bound and fixed by the fixing strap 3. When the fixing strap 3 is tightened, the other end of the fixing strap 3 can be inserted into the fixer 17 for fixation.

[0039] Start the winch 14 to move the feeding platform 11 horizontally closer to the support platform 8, insert the cylinder into the automatic centerer 5, and then transport another cylinder to be welded to the position of the support platform 8 in the same way as above and insert it into the automatic centerer 5. Start the drive motor in the power support chamber 7 to rotate the multi-directional threaded rod 53. Under the limiting action of the limiting slide plate 501, the limiting slide plate 501 slides at the position of the limiting through groove 52 under the action of the adjusting thread block 506 and the multi-directional threaded rod 53. This causes the tilt angle of the supporting limiting plate 502 to change, causing the outer expansion plate 500 to expand outward and press against the inner wall of the cylinder. After one cylinder position is pressed against, rotate the knob 504 to make the limiting slide plate 501 slide downward under the action of the limiting adjustment groove 505. This makes the limiting slide plate 501 no longer limited by the limiting through groove 52. Then the adjusting thread block 506 rotates and no longer adjusts the outer expansion plate 500 at the corresponding position. After both cylinder positions are tightened, the tightening and alignment adjustment is completed. Start the electric slide rail 9, so that the sliding platform 10 drives the welding robot 6 to move. When it moves to the designated position, the welding robot can start welding work. After the welding work is completed, rotate the knob 504 so that the limiting slide plate 501 is again limited by the limiting through groove 52, causing the adjusting threaded block 506 to move. Then the outer expansion plate 500 is closed and welded into a whole cylinder to form an evaporation chamber, which is unloaded through the cylinder bracket 4.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A welding device for processing evaporator tubes, comprising a welding adjustment table (1), characterized in that: The inner wall of the groove on the surface of the welding adjustment table (1) is fixedly connected with several evenly distributed support and limiting rods (2), and the positions of several support and limiting rods (2) are slidably connected to a feeding platform (11). The surface of the feeding platform (11) is fixedly connected with a cylinder transfer device for conveying cylinders. A support platform (8) is fixedly connected to one side of the surface of the welding adjustment table (1). A power support chamber (7) is fixedly connected through the upper part of the support platform (8). A drive motor is fixedly connected to the inner wall of the power support chamber (7). An automatic centering device (5) for aligning and clamping the cylinder is fixedly connected to the side of the power support chamber (7) near the cylinder transfer device. The automatic centering device (5) includes a fixed support cylinder (51) fixedly connected to the side of the power support chamber (7) near the feeding platform (11). The inner side of the fixed support cylinder (51) is rotatably connected to a multi-directional threaded rod (53), and the multi-directional threaded rod (53) is rotatably connected to the inner wall of the power support chamber (7). The multi-directional threaded rod (53) is fixedly connected to the drive end of the drive motor inside the power support chamber (7). The fixed support cylinder (51) has two sets of limiting through grooves (52) through the outer wall. Each of the two sets of limiting through grooves (52) is equipped with an expansion clamp (50), and the expansion clamp (50) is adjusted by a multi-directional threaded rod (53). Each expansion clamp (50) includes two threaded adjustment blocks (506) that are threadedly connected to the multi-directional threaded rod (53). A rotating separation ring (507) is rotatably connected to one side of the two threaded adjustment blocks (506) that are close to each other. A limit adjustment groove (505) is opened on the surface of the two threaded adjustment blocks (506). A lifting threaded rod (508) is rotatably connected to the bottom wall of the limit adjustment groove (505). A limit sliding plate (501) is slidably connected to the inner wall of the limit adjustment groove (505). The lifting threaded rod (508) is threadedly connected to the limit sliding plate (501), and a rotating knob (504) is fixedly connected to the top of the lifting threaded rod (508). Two symmetrically arranged limiting rotation grooves (503) are provided on the outer wall of the rotating separation ring (507). The limiting rotation grooves (503) are rotatably connected to the supporting limiting plates (502). The two supporting limiting plates (502) on the same side are rotatably connected to an outer expansion plate (500) at the end away from the limiting rotation grooves (503). The outer side of the outer expansion plate (500) is arranged in an arc shape.

2. The welding equipment for processing evaporator tubes according to claim 1, characterized in that, An electric slide rail (9) is fixedly connected to one side wall of the welding adjustment table (1), a sliding platform (10) is fixedly connected to the slide of the electric slide rail (9), and a welding robot (6) for welding is fixedly connected to the upper surface of the sliding platform (10).

3. The welding equipment for processing evaporator tubes according to claim 1, characterized in that, The cylindrical transfer device includes a cylindrical bracket (4) fixedly connected to the surface of the feeding platform (11). The surface of the cylindrical bracket (4) is arc-shaped. Two symmetrically arranged adaptation grooves (16) are opened on both sides of the cylindrical bracket (4). A fixing strap (3) is fixedly connected to one side of the lower surface of the cylindrical bracket (4). A fixing device (17) for pressing and fixing is provided at one end of the fixing strap (3). The fixing device (17) is fixedly connected to the lower surface of the cylindrical bracket (4).

4. The welding equipment for processing evaporator tubes according to claim 1, characterized in that, A winch (14) is fixedly connected to the bottom wall of the welding adjustment table (1) on the side near the support platform (8). A winch wheel (15) is fixedly connected to the drive end of the winch (14), and the winch wheel (15) is fixedly connected to the bottom wall of the welding adjustment table (1).

5. The welding equipment for processing evaporator tubes according to claim 4, characterized in that, A pull hook (12) is fixedly connected to the lower surface of the feeding platform (11), and a pull steel rope (13) is provided between the pull hook (12) and the winch (15).