A welding auxiliary device for a transformer sheet-type radiator

Abstract

The present application relates to the technical field of sheet type radiator welding processing equipment, and discloses a welding auxiliary device for a transformer sheet type radiator, which comprises a welding robot main body, support equipment symmetrically arranged on both sides of the welding robot main body, and a tubular workpiece arranged in the support equipment, the support equipment is used for determining the position of the tubular workpiece, and an auxiliary equipment is arranged on the side of the support equipment away from the welding robot main body, the auxiliary equipment can quickly press and fix the lifting ring lifting lug placed on the tubular workpiece, solves the problem that the lifting lug cannot stably stay on the arc-shaped pipe body, meanwhile, the bifurcated structure of the Y-shaped rod cooperates with the top of the lifting lug, can limit the lifting lug in the vertical direction, effectively avoids the situation that the lifting lug is touched by the welding robot during the welding process, resulting in dislocation or deviation of the lifting lug, and guarantees the welding quality.

Description

Technical Field

[0001] This invention belongs to the technical field of plate radiator welding equipment, specifically relating to a welding auxiliary device for transformer plate radiators. Background Technology

[0002] Plate radiators are important cooling components for power products such as oil-immersed transformers and reactors. They mainly include heat dissipation fins, manifolds, inlet and outlet oil pipes and interfaces, and auxiliary and protective accessories. The auxiliary and protective accessories include lifting rings or lifting lugs, which are installed on the manifolds or inlet and outlet oil pipes for the safe hoisting of the radiator, avoiding damage to the radiator body by directly binding it with ropes.

[0003] During the welding and assembly of the manifold or inlet / outlet oil pipes, a welding auxiliary device is used. The welding auxiliary device consists of two sets of arched frame support structures. Each support structure has two sets of three-jaw chucks horizontally and coaxially arranged to fix the manifold or inlet / outlet oil pipes. A welding robot is set between the two sets of support structures. When welding the seals at both ends of the manifold, the seals are first fastened to the manifold or inlet / outlet oil pipes. The manifold or inlet / outlet oil pipes are driven by rotating the three-jaw chucks. During this process, the welding robot welds the seals to the manifold or inlet / outlet oil pipes.

[0004] This auxiliary welding device, through clamping and rotation, can only perform auxiliary welding on seals installed at the ends of manifolds or inlet / outlet oil pipes. For some lugs and rings that need to be welded onto the pipe body, due to the arc-shaped structure of the pipe surface, these lugs and rings cannot remain stably on the pipe body for a long time when not being welded, and are prone to rolling or slipping, leading to assembly difficulties. Furthermore, during the welding process, the welding robot's welding torch or robotic arm will inevitably come into contact with the lugs in a free state, which can easily push the lugs away from the preset position, causing welding misalignment and seriously affecting welding accuracy and product appearance quality. Summary of the Invention

[0005] This invention provides a welding auxiliary device for transformer plate heat sinks, which solves the technical problem in related technologies that the lifting lugs or rings cannot be stably positioned on the arc-shaped tube body and are easily displaced by the robot during the welding process, resulting in poor welding quality.

[0006] This invention provides a welding auxiliary device for a transformer plate heat sink, comprising a welding robot body, support devices symmetrically arranged on both sides of the welding robot body, and a tubular workpiece disposed inside the support devices. The support devices are used to determine the position of the tubular workpiece. An auxiliary device is disposed on the side of the support devices away from the welding robot body. The auxiliary device includes a lead screw drive component, a slider, and a Y-shaped rod. The lead screw drive component is fixedly installed on the side of the support devices away from the welding robot body. The slider is threadedly connected to the lead screw drive component. A first linear telescopic component is fixedly installed on the upper surface of the slider. A bending rod is fixedly connected to the output end of the first linear telescopic component. A Y-shaped rod is fixedly connected to the lower surface of the end of the crossbar of the bending rod. The Y-shaped rod is located directly above the tubular workpiece and is parallel to the tubular workpiece. The Y-shaped rod is used to fix the components.

[0007] In a preferred embodiment, a cavity is provided on the inner side of the Y-shaped rod, and a limiting mechanism is symmetrically slidably arranged inside the cavity. The limiting mechanism includes a positioning frame, and a protrusion is provided on the inner side wall of the cavity. A strip groove is provided at the junction of the positioning frame and the protrusion.

[0008] In a preferred embodiment, a first movable block is slidably installed on one side of each of the two positioning frames, a second movable block is slidably connected to one side of the first movable block near both ends, and a third movable block is slidably connected to one side of the second movable block. Arc-shaped grooves are provided at the junctions of the first movable block with the positioning frame, the second movable block with the first movable block, and the third movable block with the second movable block, and the lengths of the arc-shaped grooves decrease sequentially.

[0009] In a preferred embodiment, a transmission rod is rotatably mounted on the inner side of the cavity. Two threaded grooves are symmetrically opened on the rod body. The positioning frame is threadedly connected to the transmission rod. A second driving component is fixedly mounted on the upper surface of the end of the bent rod crossbar. The output end of the second driving component is transmitted to the transmission rod through a bevel gear.

[0010] In a preferred embodiment, the support device includes a base and support frames disposed at both ends of the base, wherein one support frame is in a fixed state and the other support frame is in a movable state. A screw drive component is fixedly installed on one side of the movable support frame, and a guide rod is provided at the edge of the movable support frame. Both the screw drive component and the guide rod are slidably connected to the fixed support frame.

[0011] In a preferred embodiment, the slider is sleeved on the outer wall of the guide rod, and a positioning mechanism is movably connected to the outer wall of the tubular workpiece, with the positioning mechanism located on one side of the slider.

[0012] In a preferred embodiment, the positioning mechanism includes a positioning ring, with movable blocks detachably installed at equal intervals along the edge of the positioning ring. A second linear telescopic component is fixedly connected to one end of the movable block facing inward of the positioning ring, and a moving component is fixedly connected to the output end of the second linear telescopic component. The end of the moving component is in contact with the outer wall of the tubular workpiece.

[0013] In a preferred embodiment, a first driving component is fixedly installed at the end of the slider away from the tubular workpiece. A limit rod is fixedly connected to the output end of the first driving component. A bending groove is opened at the end of the slider facing the tubular workpiece, and a protrusion is formed at the end of the slider after the bending groove is opened. The limit rod overlaps the upper surface of the protrusion.

[0014] In a preferred embodiment, an extension rod is integrally formed at the edge of the positioning ring, the end of the extension rod is located inside the bending groove, and one side of the extension rod is in contact with one side of the protrusion, with the end of the extension rod located on the lower surface of the limiting rod.

[0015] In a preferred embodiment, an electric rotary table is fixedly installed on one side of each support frame, and a three-jaw chuck component is fixedly connected to one side of the electric rotary table. The three-jaw chuck component is used to fix the tubular workpiece, and the tubular workpiece passes through two three-jaw chuck components at the same time.

[0016] The beneficial effects of this invention are as follows: This invention, by setting up auxiliary equipment, utilizes a lead screw transmission component to drive the slider to move, and in conjunction with the first linear telescopic component to drive the Y-shaped rod downward, can quickly press and fix the lifting lug placed on the tubular workpiece. This solves the problem that the lifting lug cannot stay stably on the arc-shaped tube. At the same time, the bifurcated structure of the Y-shaped rod cooperates with the top of the lifting lug to limit its movement in the vertical direction, effectively preventing the welding robot from touching the lifting lug during the welding process and causing it to misalign or shift, thus ensuring the welding quality.

[0017] This invention, by setting a limiting mechanism with a crescent-shaped movable block on the inner side of the Y-shaped rod, in conjunction with the transmission rod and the second driving component, can adaptively clamp the lifting lugs that are parallel or perpendicular to the axis of the tube in the horizontal direction, greatly improving the versatility of the device and its adaptability to different shapes of lifting lugs. In addition, by setting a positioning mechanism with an extension rod in conjunction with the bending groove and limiting rod on the slider, the positioning of the welding position of the lifting lug and the control of the rotation angle of the tubular workpiece are realized, ensuring the accuracy of the welding position. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the welding robot body and supporting equipment of the present invention.

[0019] Figure 2This is a schematic diagram of the auxiliary equipment and the planar structure of the tubular workpiece of the present invention.

[0020] Figure 3 This is a top view of the auxiliary equipment of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the positioning mechanism and limiting mechanism of the present invention.

[0022] Figure 5 This is a schematic diagram of the planar structure of the bent rod and Y-shaped rod of the present invention.

[0023] Figure 6 This is a schematic diagram of the planar structure of the second driving component and the positioning frame of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the first movable block, the second movable block, and the third movable block of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the positioning mechanism of the present invention.

[0026] Figure 9 This is a schematic diagram of the planar structure of the limiting rod, extension rod, and first driving component of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the limiting rod and bending groove of the present invention.

[0028] Figure 11 This is a schematic diagram of the internal planar structure of the positioning ring of the present invention.

[0029] In the diagram: 1. Welding robot body; 2. Support equipment; 21. Base; 22. Support frame; 3. Auxiliary equipment; 31. Screw drive component; 32. Guide rod; 33. Slider; 34. First linear telescopic component; 35. Bending rod; 36. Y-shaped rod; 37. Positioning mechanism; 371. Positioning ring; 372. Limiting rod; 373. First drive component; 374. Protrusion; 375. Extension rod; 376. Bending groove; 377. Second linear telescopic component; 378. Movable block; 379. Moving component; 38. Limiting mechanism; 381. Positioning frame; 382. Transmission rod; 383. First movable block; 384. Second movable block; 385. Third movable block; 386. Strip groove; 387. Second drive component; 388. Arc groove; 39. Cavity; 4. Electric rotary table; 5. Three-jaw chuck component; 6. Tubular workpiece. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1 like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a welding auxiliary device for a transformer plate heat sink includes a welding robot body 1, support devices 2 symmetrically arranged on both sides of the welding robot body 1, and a tubular workpiece 6 disposed inside the support devices 2. The support devices 2 are used to determine the position of the tubular workpiece 6. An auxiliary device 3 is arranged on the side of the support devices 2 away from the welding robot body 1. The auxiliary device 3 includes a screw drive component 31, a slider 33, and a Y-shaped rod 36. The screw drive component 31 is fixedly installed on the side of the support devices 2 away from the welding robot body 1. The slider 33 is threadedly connected to the screw drive component 31. A first linear telescopic component 34 is fixedly installed on the upper surface of the slider 33. A bending rod 35 is fixedly connected to the output end of the first linear telescopic component 34. A Y-shaped rod 36 is fixedly connected to the lower surface of the horizontal end of the bending rod 35. The Y-shaped rod 36 is located directly above the tubular workpiece 6 and is parallel to the tubular workpiece 6. The Y-shaped rod 36 is used to fix the components.

[0032] It should be noted that during processing, the tubular workpiece 6 is fixed in the support device 2, and the welding robot body 1 welds the lifting ring lug onto the surface of the tubular workpiece 6. During the welding process, the auxiliary device 3 ensures the stability of the lifting ring lug. The auxiliary device 3 first adjusts the position of the slider 33 through the lead screw transmission component 31, moving the slider 33 to the side of the lifting ring lug. The lead screw transmission component 31 is a lead screw nut device. Then, the first linear telescopic component 34 on the upper surface of the slider 33 is activated. The first linear telescopic component 34 is an electric cylinder. The first linear telescopic component 34 drives the bending rod 35 downward, causing the Y-shaped rod at the end of the horizontal bar of the bending rod 35 to... 36 is snapped downwards onto the top of the lifting lug, thus pressing and fixing the lifting lug. At this time, the forked structure of the Y-shaped rod 36 is just stuck on the top of the lifting lug, which can initially limit its position, thereby ensuring the stability of the lifting lug during the subsequent welding process and preventing it from being misaligned or shifted due to contact with the welding robot body 1. Furthermore, the screw drive component 31 and the slider 33 are both located on the side of the tubular workpiece 6 away from the welding robot body 1, so they will not affect the normal operation of the welding robot body 1. The bending rod 35 and the Y-shaped rod 36 are both located on the top of the lifting lug, away from the welding area, so they will not interfere with the welding as well.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, the support device 2 includes a base 21 and support frames 22 disposed at both ends of the base 21. One support frame 22 is in a fixed state, and the other support frame 22 is in a movable state. A screw drive component 31 is fixedly installed on one side of the movable support frame 22. A guide rod 32 is provided at the edge of the movable support frame 22. Both the screw drive component 31 and the guide rod 32 are slidably connected to the fixed support frame 22. A slider 33 is sleeved on the outer wall of the guide rod 32.

[0034] It should be noted that the base 21 in the support device 2 is used to determine the position of the support frame 22. The support frame 22 is divided into an active state and a fixed state. The active support frame 22 is connected to a screw nut device on its side to control the position of the active support frame 22, so as to adapt to tubular workpieces 6 of different lengths. The screw drive component 31 is installed on the side of the active support frame 22, which can always keep in sync with the tubular workpieces 6 of different lengths. The guide rod 32 is mainly used to limit the angle of the slider 33 to prevent it from rotating.

[0035] Furthermore, such as Figure 1 As shown, an electric rotary table 4 is fixedly installed on one side of each support frame 22, and a three-jaw chuck component 5 is fixedly connected to one side of the electric rotary table 4. The three-jaw chuck component 5 is used to fix the tubular workpiece 6, and the tubular workpiece 6 passes through two three-jaw chuck components 5 at the same time.

[0036] It should be noted that when fixing the tubular workpiece 6, the three-jaw chuck component 5 clamps and fixes the tubular workpiece 6. Then, when welding the sealing component at its end, the electric rotary table 4 directly drives the three-jaw chuck component 5, thereby achieving the purpose of driving the tubular workpiece 6 to rotate at a uniform speed. During this process, the welding part of the welding robot body 1 is attached to the junction of the sealing component and the tubular workpiece 6 and remains stationary.

[0037] Example 2 like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, when pressing the parts, since the cross-section of the lifting lug is circular, when it is pressed by the Y-shaped rod 36, it is in line contact with the Y-shaped rod 36. At this time, although its vertical direction is restricted by the Y-shaped rod 36, if the volume of the lifting lug is small, there will still be room for movement in the horizontal direction, and the direction of the lifting lug will also change. Some lifting lugs are parallel to the tubular workpiece 6, and some lifting lugs are perpendicular to the tubular workpiece 6. At this time, ordinary clamping mechanisms cannot adapt to different shapes of lifting lugs. In order to meet the welding requirements of lifting lugs that are parallel and perpendicular to the tubular workpiece 6, this application further provides the following technical solutions.

[0038] A cavity 39 is formed on the inner side of the Y-shaped rod 36. A limiting mechanism 38 is symmetrically slidably arranged inside the cavity 39. The limiting mechanism 38 includes a positioning frame 381. A protruding strip is provided on the inner wall of the cavity 39. A strip groove 386 is formed at the junction of the positioning frame 381 and the protruding strip. A first movable block 383 is slidably installed on one side of each of the two positioning frames 381. A second movable block 384 is slidably connected to one side of each of the first movable blocks 383 near both ends. A third movable block 385 is slidably connected to one side of each of the second movable blocks 384. The first movable block 383 and the positioning frame are connected to each other. Arc-shaped grooves 388 are provided at the junctions of frame 381, second movable block 384 with first movable block 383, and third movable block 385 with second movable block 384, and the length of the arc-shaped grooves 388 decreases sequentially. A transmission rod 382 is rotatably installed inside the cavity 39. Two threaded grooves are symmetrically provided on the rod body of the transmission rod 382. The positioning frame 381 is threadedly connected to the transmission rod 382. A second driving component 387 is fixedly installed on the upper surface of the crossbar end of the bent rod 35. The output end of the second driving component 387 is transmitted to the transmission rod 382 through a bevel gear.

[0039] It should be noted that the cavity 39 is used to accommodate the limiting mechanism 38, which is used to limit the horizontal movement of the lifting ring lug. During limiting, the second drive component 387, mounted on the crossbar of the bent rod 35, is activated. The second drive component 387 is a servo motor drive device, with bevel gears on both its output end and the transmission rod 382, ​​and the two bevel gears meshing together. During the operation of the second drive component 387, the meshing transmission rod 382 rotates, using the two oppositely oriented threads on the transmission rod 382 to simultaneously move the electric positioning frame 381 towards each other, thereby clamping the lifting ring lug. A raised strip is provided on the inner wall of the cavity 39 to match the strip groove 386 on the positioning frame 381, determining the movement path of the positioning frame 381 while also preventing… The positioning frame 381 is misaligned. Furthermore, the first movable block 383, the second movable block 384, and the third movable block 385 on opposite sides of the two positioning frames 381 form a movable shape-adaptive structure. The first movable block 383, the second movable block 384, and the third movable block 385 are all designed as crescent-shaped structures, which have two contact points when in contact with the lifting lug. The reaction force they receive can push the first movable block 383, the second movable block 384, and the third movable block 385 to slide along the direction of the arc groove 388, providing ample room for movement. Whether the lifting lug is deployed along the axial direction of the tubular workpiece 6 or in a direction perpendicular to the axial direction, it can fit against the lifting lug and limit its horizontal movement.

[0040] Example 3 like Figure 4 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the lifting lug needs to be welded to a specific position on the tubular workpiece 6, otherwise it will affect the installation of the heat sink. However, it is not possible to move the slider 33 to the predetermined installation position of the lifting lug by the control of the screw drive component 31 alone. In order to ensure that the auxiliary equipment 3 can accurately position the lifting lug, this application further provides the following technical solution.

[0041] A positioning mechanism 37 is movably connected to the outer wall of the tubular workpiece 6. The positioning mechanism 37 is located on one side of the slider 33. The positioning mechanism 37 includes a positioning ring 371. Movable latches 378 are detachably installed at equal intervals along the edge of the positioning ring 371. A second linear telescopic component 377 is fixedly connected to one end of the movable latches 378 facing inwards from the positioning ring 371. A moving component 379 is fixedly connected to the output end of the second linear telescopic component 377. The end of the moving component 379 fits against the outer wall of the tubular workpiece 6. A first driving component is fixedly installed at the end of the slider 33 away from the tubular workpiece 6. The output end of the first driving component 373 is fixedly connected to the limiting rod 372. The slider 33 has a bending groove 376 at one end facing the tubular workpiece 6, and a protrusion 374 is formed at the end of the slider 33 after the bending groove 376 is opened. The limiting rod 372 overlaps the upper surface of the protrusion 374. An extension rod 375 is integrally formed at the edge of the positioning ring 371. The end of the extension rod 375 is located inside the bending groove 376, and one side of the extension rod 375 is in contact with one side of the protrusion 374. The end of the extension rod 375 is located on the lower surface of the limiting rod 372.

[0042] It should be noted that the positioning mechanism 37 is used to determine the welding position of the lifting lug. In use, the positioning ring 371 is first fitted onto the outer wall of the tubular workpiece 6, and then moved to the vicinity of the welding area. Subsequently, the second linear telescopic component 377, which is an electric cylinder, is activated. The second linear telescopic component 377 pushes the moving component 379 towards the center of the positioning ring 371 until it is in contact with the surface of the tubular workpiece 6. The moving component 379 is specifically a tracked moving device. After the moving component 379 moves radially to contact the tubular workpiece 6, the electric rotary table 4 drives the tubular workpiece 6 to rotate, thus positioning the positioning ring 371... The extension rod 375 at the edge rotates to the moving path of the slider 33. At this time, the extension rod 375 can limit the moving range of the slider 33. Subsequently, when the slider 33 moves, after one side of its protrusion 374 is in contact with the extension rod 375, the screw drive component 31 stops operating. At this time, a certain gap is left between the end of the protrusion 374 and the bending groove 376. Then, the electric rotary table 4 drives the tubular workpiece 6 to make the upper surface of the extension rod 375 in contact with the lower surface of the limiting rod 372. At this time, the top of the tubular workpiece 6 is the mounting part of the lifting ring lug. After adjustment, the welding robot body 1 first aligns the lifting ring lug with the positioning ring 371. Welding is performed at the contact edges. During the welding process, the first driving component 373 drives the limiting rod 372 to rotate away from the vertical groove of the bending groove 376, so that the extension rod 375 will not be obstructed. The first driving component 373 is a servo motor drive device. The tubular workpiece 6 can still be driven by the electric rotary table 4 as needed to ensure that the contact parts between the lifting ring lug and the tubular workpiece 6 can be welded. However, during the rotation, the limiting mechanism 38 needs to be adjusted to avoid pulling the lifting ring lug away from the tubular workpiece 6 during the rotation. The bending groove 376 opened on the slider 33 is used to accommodate the extension rod 375. When it is necessary to rotate the tubular workpiece 6 back to its initial angle, the limiting rod 372 is rotated again until it is in contact with the upper surface of the protrusion 374. Subsequently, the electric rotary table 4 drives the tubular workpiece 6 to rotate the extension rod 375 until its upper surface is in contact with the lower surface of the limiting rod 372, thereby determining the rotation angle of the tubular workpiece 6. After the welding robot body 1 finishes welding the side of the lifting ring lug away from the positioning ring 371, the moving part 379 operates, using the friction between the track and the tubular workpiece 6 to move the positioning ring 371 away from the edge of the lifting ring lug, so that the welding robot body 1 can perform welding on the remaining part of the lifting ring lug.

[0043] Working principle of the invention: During welding operations, the tubular workpiece 6 is first placed on the support device 2 and clamped and fixed using the three-jaw chuck components 5 at both ends. In order to accommodate tubular workpieces 6 of different lengths, the movable support frame 22 can be adjusted in position by the screw nut device on the side, and drive the screw transmission component 31 installed on it to move synchronously, thereby ensuring that the auxiliary device 3 can always be aligned with the processing area of ​​the workpiece.

[0044] To ensure the accuracy of the welding position of the lifting lug, the device uses a positioning mechanism 37 for physical positioning. The positioning ring 371 is fitted onto the tubular workpiece 6 and moved to the vicinity of the welding area. The second linear telescopic component 377 is activated to push the moving component 379 to fit against the outer wall of the tubular workpiece 6. Subsequently, the electric rotary table 4 drives the tubular workpiece 6 to rotate, causing the extension rod 375 on the edge of the positioning ring 371 to rotate onto the moving path of the slider 33. Then, the lead screw drive component 31 drives the slider 33 along the guide rod 3 The slider moves in direction 2 until one side of the protrusion 374 on the slider 33 is in contact with one side of the extension rod 375. At this time, the screw drive component 31 stops operating, thereby positioning the slider 33 in the predetermined installation position of the lifting lug. At this time, there is still a gap between the end of the extension rod 375 and the bending groove 376. Then, the electric rotary table 4 drives the tubular workpiece 6 to make the upper surface of the extension rod 375 in contact with the lower surface of the limiting rod 372. At this time, the top of the tubular workpiece 6 is the installation part of the lifting lug.

[0045] After the slider 33 is positioned, the first linear telescopic component 34 above it is activated, which drives the bent rod 35 and the Y-shaped rod 36 to press down, so that the bifurcated structure of the Y-shaped rod 36 is engaged with the top of the lifting ring lug, thus achieving the initial vertical limit of the lifting ring lug. For different possible shapes of the lifting ring lug, the limiting mechanism 38 in the inner cavity 39 of the Y-shaped rod 36 will make adaptive adjustments. The second drive component 387 drives the transmission rod 382 to rotate through the bevel gear, and uses two reverse threads to drive the two positioning frames 381 to move towards each other. When the first movable block 383, the second movable block 384 and the third movable block 385 on the positioning frame 381 are subjected to the reaction force of the lifting ring lug, they will slide along the arc groove 388, and their crescent-shaped structure can adaptively fit the lifting ring lug in a multi-point contact manner to complete the stable clamping in the horizontal direction and prevent misalignment during welding.

[0046] During the welding of the seal, the electric rotary table 4 drives the tubular workpiece 6 to rotate at a constant speed, while the welding robot body 1 remains stationary, achieving circumferential welding. When welding the lifting ring lug is required, the edge of the lifting ring lug that is not in contact with the positioning ring 371 is welded first. During the welding process, the first drive component 373 drives the limiting rod 372 to rotate away from the vertical groove of the bending groove 376, allowing the extension rod 375 to rotate smoothly. Then, the electric rotary table 4 drives the tubular workpiece 6 to rotate, ensuring that welding can be performed at each position. When the welding is completed and reset is required, the limiting rod 372 re-attaches to the upper surface of the protrusion 374 to limit the rotation angle of the tubular workpiece 6. When the side of the lifting ring lug away from the positioning ring 371 is welded, the moving component 379 uses the friction between the track and the tubular workpiece 6 to move the positioning ring 371 away from the edge of the lifting ring lug, providing sufficient operating space for the welding robot body 1 to complete the welding of the remaining parts.

[0047] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A welding auxiliary device for a transformer plate heat sink, comprising a welding robot body (1), support devices (2) symmetrically arranged on both sides of the welding robot body (1), and a tubular workpiece (6) disposed inside the support devices (2), wherein the support devices (2) are used to determine the position of the tubular workpiece (6), characterized in that, The support device (2) is provided with auxiliary equipment (3) on the side away from the welding robot body (1); The auxiliary equipment (3) includes a screw drive component (31), a slider (33) and a Y-shaped rod (36). The screw drive component (31) is fixedly installed on the side of the support equipment (2) away from the welding robot body (1). The slider (33) is threadedly connected to the screw drive component (31). A first linear telescopic component (34) is fixedly installed on the upper surface of the slider (33). A bent rod (35) is fixedly connected to the output end of the first linear telescopic component (34). A Y-shaped rod (36) is fixedly connected to the lower surface of the crossbar end of the bent rod (35). The Y-shaped rod (36) is located directly above the tubular workpiece (6). The Y-shaped rod (36) is parallel to the tubular workpiece (6). The Y-shaped rod (36) is used to fix the parts. The slider (33) is sleeved on the outer wall of the guide rod (32). A positioning mechanism (37) is movably connected to the outer wall of the tubular workpiece (6). The positioning mechanism (37) is located on one side of the slider (33). The positioning mechanism (37) includes a positioning ring (371). Movable blocks (378) are detachably installed at equal intervals on the edge of the positioning ring (371). A second linear telescopic component (377) is fixedly connected to one end of the movable block (378) facing the inside of the positioning ring (371). A moving component (379) is fixedly connected to the output end of the second linear telescopic component (377). The end of the moving component (379) is in contact with the outer wall of the tubular workpiece (6). The slider (33) is located away from the tubular workpiece (6). The first driving component (373) is fixedly installed at the end. The output end of the first driving component (373) is fixedly connected to the limiting rod (372). The slider (33) has a bending groove (376) at one end facing the tubular workpiece (6). After the bending groove (376) is opened, a protrusion (374) is formed at the end of the slider (33). The limiting rod (372) overlaps the upper surface of the protrusion (374). An extension rod (375) is integrally formed at the edge of the positioning ring (371). The end of the extension rod (375) is located inside the bending groove (376), and one side of the extension rod (375) is in contact with one side of the protrusion (374). The end of the extension rod (375) is located on the lower surface of the limiting rod (372).

2. The welding auxiliary device for a transformer plate radiator according to claim 1, characterized in that, The Y-shaped rod (36) has a cavity (39) on its inner side. A limiting mechanism (38) is symmetrically slidably arranged inside the cavity (39). The limiting mechanism (38) includes a positioning frame (381). A protruding strip is provided on the inner wall of the cavity (39). A strip groove (386) is provided at the junction of the positioning frame (381) and the protruding strip.

3. The welding auxiliary device for a transformer plate radiator according to claim 2, characterized in that, Each of the two positioning frames (381) has a first movable block (383) slidably mounted on one side of each other. A second movable block (384) is slidably connected to one side of the first movable block (383) near both ends. A third movable block (385) is slidably connected to one side of the second movable block (384). An arc-shaped groove (388) is provided at the junction of the first movable block (383) and the positioning frame (381), the second movable block (384) and the first movable block (383), and the third movable block (385) and the second movable block (384), and the length of the arc-shaped groove (388) decreases sequentially.

4. The welding auxiliary device for a transformer plate radiator according to claim 3, characterized in that, A transmission rod (382) is rotatably installed inside the cavity (39). Two threaded grooves are symmetrically opened on the rod body of the transmission rod (382). The positioning frame (381) is threadedly connected to the transmission rod (382). A second driving component (387) is fixedly installed on the upper surface of the end of the crossbar of the bent rod (35). The output end of the second driving component (387) is transmitted to the transmission rod (382) through a bevel gear.

5. The welding auxiliary device for a transformer plate radiator according to claim 1, characterized in that, The support device (2) includes a base (21) and support frames (22) set at both ends of the base (21). One support frame (22) is in a fixed state, and the other support frame (22) is in a movable state. The screw drive component (31) is fixedly installed on one side of the movable support frame (22). A guide rod (32) is provided at the edge of the movable support frame (22). The screw drive component (31) and the guide rod (32) are slidably connected to the fixed support frame (22).

6. The welding auxiliary device for a transformer plate radiator according to claim 5, characterized in that, Each of the support frames (22) is fixedly mounted on one side with an electric rotary table (4), and a three-jaw chuck component (5) is fixedly connected to one side of the electric rotary table (4). The three-jaw chuck component (5) is used to fix the tubular workpiece (6), and the tubular workpiece (6) passes through two three-jaw chuck components (5) at the same time.

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