A welding apparatus for evaporator tube processing

Abstract

The application discloses a kind of welding equipment for evaporator pipe processing, belong to evaporator pipe welding technical field, including processing table, the mounting bracket is fixedly installed on the processing table, the first electric push rod is fixedly installed on the mounting bracket, and the mounting plate is fixedly installed on the output end of the first electric push rod.The scheme is provided with double clamping structure, the second electric push rod drives arc plate from the inside of pipeline and tightens pipe wall, and is matched with clamping plate to adhere to and clamp from the outer wall of pipeline, forms bidirectional limiting fixed structure, and the first spring elastic cooperation between mounting rod and slider can be self-adaptingly adjusted clamping spacing according to different pipe diameter, avoid the problems such as weld distortion, welding misplacement caused by pipeline displacement in welding process, and before pipeline welding, utilize polishing brush to adhere to weld position and polish, avoid the quality problems such as welding virtual welding, slag inclusion, porosity caused by dirt on the surface of weld, effectively improve welding quality.

Description

Technical Field

[0001] This invention relates to the field of evaporator tube welding technology, and more specifically, to a welding device for processing evaporator tubes. Background Technology

[0002] The evaporator is a core heat exchange component of a common refrigeration unit. It carries a low-temperature refrigerant and achieves refrigeration by absorbing heat through the tube walls. The evaporator tubes are the core components of the evaporator. During the manufacturing process of the evaporator, it is often necessary to process the evaporator tubes. A common tube processing procedure is to weld the pipes.

[0003] Since the core requirements of industrial evaporators are high pressure resistance, high temperature resistance, corrosion resistance, wear and erosion resistance, and explosion-proof pressure resistance, the pipes are often made of thick-walled tube bundles of carbon steel or 316 stainless steel. Moreover, industrial evaporator pipes are usually quite long, so it is often necessary to weld multiple straight pipes together. Traditional welding methods mostly require manual support of the evaporator tubes while rotating them and welding. However, under manual support, the evaporator tubes are prone to shaking and displacement, which affects the welding quality and effect, resulting in low welding efficiency and high labor intensity.

[0004] To address the aforementioned issues, some solutions have been proposed in the prior art. For example, Chinese utility model patent CN 221952681U discloses a welding device for processing evaporator tubes. This device, through the operation of a drive motor, allows three positioning blocks to move synchronously toward the evaporator tube, thereby fixing the evaporator tube. The central axis of the evaporator tube is aligned with the central axis of the mold ring. Combined with pulleys, electric push rods, and actuating wheels, the evaporator tube can rotate without shifting or vibrating, allowing the welding gun to perform welding operations on the rotating evaporator tube, ensuring welding quality and effect, and improving welding efficiency. However, in actual welding processes, due to the large size of industrial evaporator pipes, simply clamping the pipe with positioning blocks can easily lead to pipe vibration or even movement during welding, severely affecting welding quality and efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a welding device for processing evaporator tubes, which can improve welding quality.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A welding device for processing evaporator tubes includes a processing table, a mounting frame fixedly mounted on the processing table, a first electric push rod fixedly mounted on the mounting frame, a mounting plate fixedly mounted on the output end of the first electric push rod, and a welding machine fixedly mounted on the mounting plate. The processing table is provided with a clamping assembly. The clamping assembly includes sliders symmetrically slidably mounted on a processing table. A mounting rod is horizontally slidably mounted on the slider, and a first spring is installed between the mounting rod and the slider. A mounting block is fixedly mounted on the mounting rod, a clamping rod is fixedly mounted on the mounting block, and a clamping plate is fixedly mounted on the clamping rod. Vertical plates are symmetrically fixedly mounted on the processing table, and a motor is fixedly mounted on the vertical plates. A horizontal rod is fixedly mounted on the output end of the motor, and second electric push rods are uniformly fixedly mounted on the horizontal rods. An arc-shaped plate is fixedly mounted on the output end of the second electric push rod.

[0008] Furthermore, a threaded rod that is threadedly engaged with the slider is rotatably mounted on the mounting bracket, a gear is fixedly mounted on the threaded rod, and a rack that meshes with the gear is fixedly mounted on the mounting plate. A slide plate is slidably mounted on the mounting block, a polishing brush is fixedly mounted on the slide plate, and an electric telescopic rod whose output end is fixedly connected to the slide plate is fixedly mounted on the mounting block.

[0009] Furthermore, a striking rod is slidably mounted on the mounting block, a striking ball is fixedly mounted on the end of the striking rod away from the mounting block, a striking plate is fixedly mounted on the end of the striking rod away from the striking ball, a second spring is installed between the striking plate and the mounting block, a rotating rod is rotatably mounted on the mounting block, and a cam is fixedly mounted on the rotating rod.

[0010] Furthermore, a transmission rod is rotatably mounted on the clamping plate, a roller is fixedly mounted on the transmission rod, a hollow rod is rotatably mounted on the mounting block, a belt is installed between the hollow rod and the transmission rod, and a transmission assembly is provided between the hollow rod and the rotating rod.

[0011] Furthermore, the transmission assembly includes a transmission block fixedly mounted on a hollow rod, a slide rod slidably mounted on the rotating rod, a third spring being installed between the slide rod and the rotating rod, a push block cooperating with the transmission block being fixedly mounted on the slide rod, an inclined plate being fixedly mounted on the slide plate, and a steel ball being rotatably mounted on the slide rod.

[0012] Furthermore, a fixing rod is slidably mounted on the mounting rod, and a fourth spring is installed between the fixing rod and the mounting rod. The slider has a fixing groove that cooperates with the fixing rod, the fixing rod has an inclined groove, and a push rod that cooperates with the inclined groove is fixedly mounted on the sliding plate.

[0013] Furthermore, an anti-slip pad is fixedly installed on the roller.

[0014] Furthermore, the end of the fixing rod near the fixing groove is an inclined surface.

[0015] Furthermore, ball bearings are uniformly fixedly installed on the clamping plate.

[0016] Furthermore, a collection groove is provided on the processing table, and a collection box that cooperates with the collection groove is fixedly installed on the processing table.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution sets up a double clamping structure. The second electric push rod drives the arc plate to support the pipe wall from the inside of the pipe. It is combined with the clamping plate to clamp the pipe from the outside of the pipe, forming a two-way limiting and fixing structure. At the same time, the first spring between the mounting rod and the slider is elastically coordinated, and the clamping distance can be adjusted adaptively according to different pipe diameters to avoid problems such as weld skew and welding misalignment caused by pipe displacement during welding. In addition, before welding the pipe, the grinding brush is used to grind the weld position to avoid quality problems such as welding defects, slag inclusions, and porosity caused by dirt on the weld surface, which effectively improves the welding quality. (2) This scheme sets up a striking ball. After grinding, as the sliding plate moves the grinding brush, the sliding plate connects the hollow rod and the rotating rod through the inclined plate, sliding rod, push block and transmission block. Then, during the rotation of the pipe, it can drive the cam to rotate, so that the striking ball hits the weld after welding, effectively improving the weld structure and avoiding cracking, deformation and other faults in the later stage of the weld, further improving the welding quality. (3) By setting a fixed rod, the slide moves as the electric telescopic rod moves, and the slide moves the push rod. As the push rod moves, it gradually contacts the inclined groove on the fixed rod and applies a thrust to the inclined groove on the fixed rod. Then, under the action of the thrust, the fixed rod slides along the mounting rod and inserts into the fixed groove. At this time, the fourth spring is stretched and has a tendency to recover. After the fixed rod is inserted into the fixed groove, the mounting rod and the slider can be locked, thereby improving the clamping effect of the pipe and effectively improving the welding quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an assembly diagram of the mounting block, grinding brush, and clamping plate of the present invention; Figure 3 This is a cross-sectional view of the mounting block, sliding plate, and clamping plate of the present invention; Figure 4 This is a diagram showing the combination of the threaded rod, gear, and rack of the present invention. Figure 5 This is a diagram showing the combination of the skateboard, push rod, and ramp of the present invention. Figure 6 This is a cross-sectional view of the hollow rod and rotating rod of the present invention; Figure 7 This is a cross-sectional view of the slider, mounting rod, and mounting block of the present invention; Figure 8This is a diagram showing the combination of the arc-shaped plate, the horizontal bar, and the second electric push rod of the present invention.

[0019] Explanation of the labels in the diagram: 101. Processing table; 103. Mounting bracket; 104. First electric actuator; 105. Mounting plate; 106. Welding machine; 2. Clamping assembly; 201. Slider; 202. Mounting rod; 203. First spring; 204. Mounting block; 205. Vertical plate; 206. Clamping rod; 207. Clamping plate; 208. Motor; 209. Horizontal rod; 210. Second electric push rod; 211. Arc plate; 301. Threaded rod; 302. Gear; 303. Rack; 304. Slide plate; 305. Grinding brush; 306. Electric telescopic rod; 401. Striking lever; 402. Striking ball; 403. Striking plate; 404. Second spring; 405. Rotating lever; 406. Cam; 501. Transmission rod; 502. Roller; 503. Hollow rod; 504. Belt; 505. Transmission block; 506. Slide rod; 507. Third spring; 508. Push block; 509. Inclined plate; 510. Steel ball; 601. Fixed rod; 602. Fourth spring; 603. Fixed groove; 604. Push rod; 701. Anti-slip mat; 702. Ball bearing; 703. Collection box. Detailed Implementation

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

[0021] Please see Figures 1 to 8 A welding device for processing evaporator tubes includes a processing table 101, on which a mounting frame 103 is fixedly installed. A first electric push rod 104 is fixedly installed on the mounting frame 103. A mounting plate 105 is fixedly installed on the output end of the first electric push rod 104, and a welding machine 106 is fixedly installed on the mounting plate 105. A clamping assembly 2 is provided on the processing table 101. The clamping assembly 2 includes a slider 201 symmetrically slidably mounted on a processing table 101. A mounting rod 202 is horizontally slidably mounted on the slider 201, and a first spring 203 is jointly mounted between the mounting rod 202 and the slider 201. A mounting block 204 is fixedly mounted on the mounting rod 202, and a clamping rod 206 is fixedly mounted on the mounting block 204. A clamping plate 207 is fixedly mounted on the clamping rod 206. A vertical plate 205 is symmetrically fixedly mounted on the processing table 101. A motor 208 is fixedly mounted on the vertical plate 205. A horizontal rod 209 is fixedly mounted on the output end of the motor 208. A second electric push rod 210 is uniformly fixedly mounted on the horizontal rod 209. An arc-shaped plate 211 is fixedly mounted on the output end of the second electric push rod 210.

[0022] A threaded rod 301 that is threadedly engaged with the slider 201 is rotatably mounted on the mounting bracket 103. A gear 302 is fixedly mounted on the threaded rod 301. A rack 303 that meshes with the gear 302 is fixedly mounted on the mounting plate 105. A slide plate 304 is slidably mounted on the mounting block 204. A polishing brush 305 is fixedly mounted on the slide plate 304. An electric telescopic rod 306 whose output end is fixedly connected to the slide plate 304 is fixedly mounted on the mounting block 204.

[0023] In use, place the two ends of the pipes that are far apart from each other at the horizontal bar 209, and make the horizontal bar 209 drive the arc plate 211 to insert into the pipe. Then, the output end of the second electric push rod 210 extends and drives the arc plate 211 to contact the inner wall of the pipe, thereby clamping and fixing the pipe. During welding, the output end of the first electric push rod 104 extends and drives the mounting plate 105 to move downward, and the welding machine 106 moves downward as the mounting plate 105 moves downward. At the same time, the rack 303 moves downward as the mounting plate 105 moves downward, and the gear 302 and the threaded rod 301 rotate synchronously as the rack 303 moves downward. Then, as the threaded rod 301 rotates, the slider 201 slides along the top wall of the processing table 101. As the slider 201 moves, the mounting block 204, the mounting rod 202 and the clamping plate 207 move synchronously. As the clamping plate 207 moves, it gradually contacts the outer wall of the pipe and clamps the pipe near the weld seam. With the elastic cooperation of the first spring 203, pipes of different sizes can be clamped, effectively preventing the pipe from moving during the welding process and affecting the welding quality.

[0024] During the movement of the installation block 204, the sliding plate 304 drives the grinding brush 305 to contact the weld. Then, the motor 208 drives the pipe to rotate through the horizontal rod 209, the second electric push rod 210, and the arc plate 211. During the rotation of the pipe, the grinding brush 305 can grind the weld, effectively avoiding the presence of an oxide layer at the weld that affects the welding quality.

[0025] like Figures 2 to 7 As shown, a striking rod 401 is slidably mounted on the mounting block 204. A striking ball 402 is fixedly mounted on the end of the striking rod 401 away from the mounting block 204. A striking plate 403 is fixedly mounted on the end of the striking rod 401 away from the striking ball 402. A second spring 404 is installed between the striking plate 403 and the mounting block 204. A rotating rod 405 is rotatably mounted on the mounting block 204, and a cam 406 is fixedly mounted on the rotating rod 405.

[0026] A transmission rod 501 is rotatably mounted on the clamping plate 207, a roller 502 is fixedly mounted on the transmission rod 501, a hollow rod 503 is rotatably mounted on the mounting block 204, a belt 504 is installed between the hollow rod 503 and the transmission rod 501, and a transmission assembly is provided between the hollow rod 503 and the rotating rod 405.

[0027] The transmission assembly includes a transmission block 505 fixedly mounted on a hollow rod 503, a slide rod 506 slidably mounted on the rotating rod 405, a third spring 507 jointly mounted between the slide rod 506 and the rotating rod 405, a push block 508 cooperating with the transmission block 505 fixedly mounted on the slide rod 506, an inclined plate 509 fixedly mounted on the slide plate 304, and a steel ball 510 rotatably mounted on the slide rod 506.

[0028] A fixing rod 601 is slidably mounted on the mounting rod 202. A fourth spring 602 is installed between the fixing rod 601 and the mounting rod 202. A fixing groove 603 that cooperates with the fixing rod 601 is opened on the slider 201. An inclined groove is opened on the fixing rod 601. A push rod 604 that cooperates with the inclined groove is fixedly mounted on the sliding plate 304.

[0029] By adopting the above technical solution, when the clamping plate 207 moves towards the pipeline, the clamping plate 207 drives the roller 502 to abut against the outer wall of the pipeline. Then, when the pipeline rotates, the pipeline drives the roller 502 to rotate through friction. During the rotation of the roller 502, the rotating rod 405 is driven to rotate through the transmission rod 501, belt 504, hollow rod 503, and transmission assembly. During the rotation of the rotating rod 405, the cam 406 is driven to rotate. During the rotation of the cam 406, the striking plate 403 drives the striking rod 401 and striking ball 402 to move. At this time, the second spring 404 is compressed and has a tendency to recover. During the movement of the striking ball 402, the weld seam after welding is struck. Due to the high temperature melting and cooling contraction of the weld seam during welding, huge tensile stress is generated and remains in the weld seam and heat-affected zone. When the metal is lightly struck in the red-hot state, a small amount of plastic extension occurs, which offsets the tensile stress generated by the contraction, thereby effectively improving the welding quality.

[0030] When welding is required after pipe grinding, the output end of the electric telescopic rod 306 retracts and drives the sliding plate 304 to move towards the mounting block 204. During the movement of the sliding plate 304, the grinding brush 305 is disengaged from the weld, thus effectively preventing the grinding brush 305 from damaging the weld. Furthermore, the movement of the sliding plate 304 also moves the inclined plate 509, and during this movement, the inclined surface of the inclined plate 509 presses against the steel ball 510, forcing the sliding rod 506 to overcome the elastic force of the third spring 507 and move axially. The slide bar 506 moves, and the push block 508 moves during the movement of the slide bar 506. After the steel ball 510 disengages from the inclined surface of the inclined plate 509, the push block 508 contacts the transmission block 505. During the rotation of the hollow rod 503, the rotating rod 405 can be driven to rotate through the transmission block 505 and the push block 508. That is, the weld is only hammered after the pipe is welded, thereby reducing the wear between the cam 406 and the striking plate 403 and effectively extending the service life of the cam 406 and the striking plate 403.

[0031] During the movement of the electric telescopic rod 306 driving the sliding plate 304, the sliding plate 304 drives the push rod 604 to move. As the push rod 604 moves, it gradually contacts the inclined groove on the fixed rod 601 and applies a pushing force to the inclined groove on the fixed rod 601. Then, under the action of the pushing force, the fixed rod 601 slides along the mounting rod 202 and inserts into the fixed groove 603. At this time, the fourth spring 602 is stretched and has a tendency to return to its original state. After the fixed rod 601 is inserted into the fixed groove 603, the mounting rod 202 and the slider 201 can be locked, thereby improving the clamping effect of the pipe and effectively improving the welding quality.

[0032] like Figure 1 , Figure 3 , Figure 7 As shown, an anti-slip pad 701 is fixedly installed on the roller 502.

[0033] The end of the fixing rod 601 near the fixing groove 603 is an inclined surface.

[0034] Ball bearings 702 are evenly fixedly installed on the clamping plate 207.

[0035] The processing table 101 is provided with a collection trough, and a collection box 703 that cooperates with the collection trough is fixedly installed on the processing table 101.

[0036] By adopting the above technical solution, when the clamping plate 207 drives the roller 502 to move towards the pipeline, the roller 502 drives the anti-slip pad 701 to contact the pipeline and presses the anti-slip pad 701 tightly against the outer wall of the pipeline, thereby increasing the friction between the pipeline and the roller 502 and ensuring that the roller 502 can rotate during the pipeline rotation process; and by setting the ball bearing 702, when the clamping plate 207 clamps the pipeline, the ball bearing 702 contacts the pipeline, and then when the pipeline rotates, the pipeline can drive the ball bearing 702 to rotate, thereby converting the sliding friction between the pipeline and the clamping plate 207 into rolling friction between the pipeline and the ball bearing 702, effectively preventing the clamping plate 207 from scratching the pipeline surface; and by setting the collection box 703, the debris after knocking and grinding will fall into the collection box 703 under the action of gravity, thereby facilitating the user to clean up the debris.

[0037] Instructions for use: Place the two evaporator pipes to be welded at the positions of the horizontal bars 209 on both sides of the equipment. Then, clamp the inner wall of the pipes using the arc-shaped plate 211. Next, activate the first electric push rod 104 at the top. The first electric push rod 104 drives the mounting plate 105 and the welding machine 106 to move downwards as a whole. During the downward movement of the mounting plate 105, the rack 303 moves downwards synchronously. The rack 303 meshes with the gear 302 and rotates, which in turn drives the threaded rod 301 to rotate. This causes the sliders 201 on both sides to slide symmetrically along the processing table 101. During the movement of the sliders 201, the mounting rod 202, the mounting block 204, and the clamping plate 207 move towards the outer wall of the pipes synchronously until the clamping plate 207 is in contact with the outer wall of the pipes. Relying on the first spring 203 between the mounting rod 202 and the slider 201, it can adaptively adapt to pipes of different outer diameters, achieving flexible clamping of the outer wall of the pipes.

[0038] After the pipe is fixed, the motor 208 on the vertical plate 205 is started. The motor 208 drives the horizontal bar 209 to rotate at a constant speed, which in turn drives the pipe to rotate slowly. During the clamping and fixing process, the grinding brush 305 on the mounting block 204 is always in contact with the position of the pipe to be welded. As the pipe rotates with the motor 208, the grinding brush 305 continuously grinds the surface of the mating position.

[0039] After the mating position is ground, the electric telescopic rod 306 is retracted, causing the sliding plate 304 to retract towards the mounting block 204, so that the grinding brush 305 is completely disengaged from the pipe mating position, preventing the grinding brush 305 from burning or scratching the formed weld during subsequent welding. At the same time, the retraction of the sliding plate 304 causes the push rod 604 to move, and the push rod 604 presses against the inclined groove on the fixed rod 601, driving the fixed rod 601 to compress the fourth spring 602 and insert it into the fixed groove 603 of the slider 201, locking the mounting rod 202 and the slider 201 together, locking the pipe clamping state, preventing the pipe from loosening or shifting during welding, keeping the first electric push rod 104 in a downward state, stabilizing the working position of the welding machine 106, and starting the welding machine 106 to perform welding operations on the butt weld of the two pipes.

[0040] During the retraction of the slide plate 304, the inclined plate 509 moves synchronously. The inclined surface of the inclined plate 509 presses against the steel ball 510 at the end of the slide rod 506, pushing the slide rod 506 to compress the third spring 507 and cause it to shift. This causes the push block 508 on the slide rod 506 to fit against the transmission block 505 on the hollow rod 503. At the same time, during the pipe welding process, the outer wall of the pipe continuously fits against the roller 502. Relying on the friction of the pipe rotation, the roller 502 rotates. The roller 502 drives the hollow rod 503 to rotate through the transmission rod 501 and the belt 504. The rotation of the hollow rod 503 can drive the rotating rod 405 and the cam 406 to rotate synchronously. The cam 406 continuously presses against the striking plate 403, pushing the striking rod 401 and the striking ball 402 to strike the weld.

[0041] After the welding and stress-relieving processes are completed, the welding machine 106 and motor 208 are turned off, and the pipe rotation is stopped. First, the first electric push rod 104 is retracted, which drives the mounting plate 105, welding machine 106, and rack 303 to return to their original positions simultaneously. At the same time, the threaded rod 301 drives the slider 201 to return to its original position. Then, the electric telescopic rod 306 is extended, which drives the grinding brush 305 to return to its original position. At the same time, the inclined plate 509 and push rod 604 return to their original positions, and the fourth spring 602 and the third spring 507 rebound, releasing the locking state of the fixing rod 601. The second electric push rod 210 is retracted, releasing the arc plate 211 inside the pipe.

[0042] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A welding device for processing evaporator tubes, comprising a processing table (101), characterized in that: A mounting frame (103) is fixedly installed on the processing table (101), a first electric push rod (104) is fixedly installed on the mounting frame (103), a mounting plate (105) is fixedly installed on the output end of the first electric push rod (104), and a welding machine (106) is fixedly installed on the mounting plate (105). A clamping assembly (2) is provided on the processing table (101). The clamping assembly (2) includes a slider (201) symmetrically slidably mounted on a processing table (101), a mounting rod (202) slidably mounted on the slider (201), and a first spring (203) is installed between the mounting rod (202) and the slider (201). A mounting block (204) is fixedly mounted on the mounting rod (202), a clamping rod (206) is fixedly mounted on the mounting block (204), and a clamping plate (207) is fixedly mounted on the clamping rod (206). A vertical plate (205) is symmetrically fixedly mounted on the processing table (101), a motor (208) is fixedly mounted on the vertical plate (205), a horizontal rod (209) is fixedly mounted on the output end of the motor (208), a second electric push rod (210) is uniformly fixedly mounted on the horizontal rod (209), and an arc plate (211) is fixedly mounted on the output end of the second electric push rod (210).

2. The welding equipment for processing evaporator tubes according to claim 1, characterized in that: The mounting bracket (103) is rotatably mounted with a threaded rod (301) that is threaded to engage with the slider (201). A gear (302) is fixedly mounted on the threaded rod (301). A rack (303) that meshes with the gear (302) is fixedly mounted on the mounting plate (105). A slide plate (304) is slidably mounted on the mounting block (204). A polishing brush (305) is fixedly mounted on the slide plate (304). An electric telescopic rod (306) whose output end is fixedly connected to the slide plate (304) is fixedly mounted on the mounting block (204).

3. The welding equipment for processing evaporator tubes according to claim 2, characterized in that: A striking rod (401) is slidably mounted on the mounting block (204). A striking ball (402) is fixedly mounted on one end of the striking rod (401) away from the mounting block (204). A striking plate (403) is fixedly mounted on the other end of the striking rod (401) away from the striking ball (402). A second spring (404) is installed between the striking plate (403) and the mounting block (204). A rotating rod (405) is rotatably mounted on the mounting block (204), and a cam (406) is fixedly mounted on the rotating rod (405).

4. The welding equipment for processing evaporator tubes according to claim 3, characterized in that: A transmission rod (501) is rotatably mounted on the clamping plate (207), a roller (502) is fixedly mounted on the transmission rod (501), a hollow rod (503) is rotatably mounted on the mounting block (204), a belt (504) is installed between the hollow rod (503) and the transmission rod (501), and a transmission assembly is provided between the hollow rod (503) and the rotating rod (405).

5. The welding equipment for processing evaporator tubes according to claim 4, characterized in that: The transmission assembly includes a transmission block (505) fixedly mounted on a hollow rod (503), a slide rod (506) slidably mounted on the rotating rod (405), a third spring (507) being installed between the slide rod (506) and the rotating rod (405), a push block (508) cooperating with the transmission block (505) being fixedly mounted on the slide rod (506), an inclined plate (509) being fixedly mounted on the slide plate (304), and a steel ball (510) being rotatably mounted on the slide rod (506).

6. The welding equipment for processing evaporator tubes according to claim 1, characterized in that: A fixing rod (601) is slidably mounted on the mounting rod (202). A fourth spring (602) is installed between the fixing rod (601) and the mounting rod (202). A fixing groove (603) that cooperates with the fixing rod (601) is opened on the slider (201). An inclined groove is opened on the fixing rod (601). A push rod (604) that cooperates with the inclined groove is fixedly mounted on the sliding plate (304).

7. The welding equipment for processing evaporator tubes according to claim 4, characterized in that: An anti-slip pad (701) is fixedly installed on the roller (502).

8. The welding equipment for processing evaporator tubes according to claim 6, characterized in that: The end of the fixing rod (601) near the fixing groove (603) is an inclined surface.

9. The welding equipment for processing evaporator tubes according to claim 1, characterized in that: Ball bearings (702) are evenly fixedly installed on the clamping plate (207).

10. The welding equipment for processing evaporator tubes according to claim 1, characterized in that: The processing table (101) is provided with a collection trough, and a collection box (703) that cooperates with the collection trough is fixedly installed on the processing table (101).

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