Transformer heat sink welding device

Abstract

The invention relates to the technical field of welding devices, and specifically discloses a transformer heat sink welding device, comprising: a support, a base and a welding assembly, wherein the welding assembly can weld arranged heat sinks and ribs, and further comprises: a clamping assembly, a variable pitch screw, a flipping assembly, a push plate, a first reset spring and a second reset spring, wherein a plurality of variable pitch screws are rotatably arranged on the support along the length direction, the clamping assembly is arranged on the variable pitch screw at intervals along the axial direction, a plurality of flipping assemblies are arranged on the support along the length direction, a plurality of push plates are arranged on the base at intervals while sliding, a first reset spring is arranged on the base, and a second reset spring is arranged on the support; the transformer heat sink welding device of the invention can arrange the heat sinks at uniform intervals, reduces the workload of manual arrangement and improves work efficiency, and can flip the heat sinks that are arranged incorrectly to ensure the heat dissipation efficiency of the radiator.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a welding device for a radiator of a transformer. Background Art

[0002] The transformer radiator is an important part of the transformer. Its main function is to help the transformer dissipate heat to maintain its normal operating temperature and prevent the transformer from being damaged due to overtemperature. The radiator welding device is a device specially used to weld radiator components such as radiators, water pipes and plate fins together.

[0003] A Chinese patent with the authorization announcement number CN116618932B discloses a heat sink processing welding positioning device for intelligent equipment, including: a positioning platform, an intermediate cavity is provided inside the positioning platform, and a top hole is provided on the top surface of the positioning platform. The invention moves to the reserved hole after the movable rod is pulled down, and the diameter difference between the reserved hole and the top hole is matched, so that the top hole is directly connected with the intermediate cavity, and the air in the intermediate cavity is sucked by the negative pressure mechanism when the copper tube is sealed corresponding to the top hole, so that a negative pressure space is formed in the intermediate cavity, so that an air pressure difference is formed on the upper and lower surfaces of the copper tube and the adsorption positioning is completed. In actual use, according to the copper tubes with different bending shapes, the movable rods at different positions are pressed down to realize negative pressure adsorption positioning at different positions, and the actual use range is greatly increased. At the same time, the bottom surface negative pressure adsorption fixation reduces the obstruction to the upper part of the copper tube during positioning, which improves the convenience for subsequent welding.

[0004] The above patent document greatly increases the actual application scope through negative pressure adsorption positioning at different positions, which improves the convenience for subsequent welding. However, when placing the wavy heat sink, the spacing distance of the wavy heat sink will affect the heat dissipation effect. At the same time, the front and back of the wavy heat sink will also affect the heat dissipation effect of the radiator. Traditional radiator welding devices usually manually place the heat sink and weld it. However, manual placement of the heat sink can easily cause the spacing to be too large or too small or the heat sink to be in opposite directions, thereby reducing the heat dissipation efficiency. At the same time, manual placement and welding are inefficient, increasing production costs. Summary of the invention

[0005] The present invention provides a heat sink welding device for a transformer, aiming to solve the technical problem in the related art that manual placement of heat sinks easily causes the spacing to be too large or too small or the heat sinks to be in opposite directions, thereby reducing the heat dissipation efficiency and increasing the production cost.

[0006] The heat sink welding device for transformer of the present invention comprises: a support, a base and a welding assembly, the support is arranged on both sides of the base, the welding assembly can weld the arranged heat sinks and ribs, and also comprises: a clamping assembly, a pitch-changing screw, a flipping assembly, a push plate, a first return spring and a second return spring, a plurality of pitch-changing screws are rotatably arranged on the support along the length direction, the clamping assembly is arranged on the pitch-changing screw at intervals along the axial direction, and the pitch-changing screw and the clamping assembly are transmission-coordinated so that a plurality of heat sinks can be evenly diffused and moved, a plurality of flipping assemblies are arranged on the support along the length direction, the flipping assembly can flip the heat sink, a plurality of push plates are slidingly arranged on the base at intervals, and the push plates can play a role of pushing the heat sinks on both sides and protecting them when the heat sinks are flipped, a first return spring is arranged on the base, and the first return spring is connected to the push plates and corresponds to each other one by one, so as to reset the push plates after displacement, and the second return spring is arranged on the support, and the second return spring can reset the heat sink after displacement.

[0007] The beneficial effects of the present invention are: the heat sinks can be evenly spaced, the workload of manual arrangement is reduced, and the work efficiency is improved; at the same time, the heat sinks with incorrect arrangement can be turned over to ensure the heat dissipation efficiency of the radiator.

[0008] Preferably, top plates are provided on both side ends of the support, and the ends of the variable pitch screw are rotatably connected to the top plates, the clamping assembly includes a plurality of clamping units, and each clamping unit on the variable pitch screw corresponds to a heat sink, a driving assembly is provided on the outer wall of the top plate, the driving assembly can drive the variable pitch screw to rotate, and a laser irradiation pen is provided on the side wall of the top plate.

[0009] The effect is that the laser irradiation pen can determine the direction of the heat sink, avoid inconsistent directions of the heat sink, and ensure the heat dissipation efficiency of the radiator.

[0010] Preferably, the clamping unit includes: a moving block, a telescopic rod, a motor, a bidirectional lead screw, a clamping plate and a slider, the moving block is arranged on the outer peripheral surface of the variable pitch screw, the moving block can move along the axial direction of the variable pitch screw, the moving block is provided with a U-shaped groove, and the telescopic rod is arranged in the U-shaped groove, a clamping box is provided at one end of the telescopic rod, the clamping box also has a groove, and the bidirectional lead screw is arranged in the groove of the clamping box along the length direction, the motor is arranged on one side outer wall of the clamping box, and the output end of the motor is transmission-connected to the bidirectional lead screw, and the clamping plate is arranged on the outer peripheral surface of the bidirectional lead screw.

[0011] The effect is that the clamping unit can clamp the heat sink so that the heat sink moves stably while spreading evenly, thereby improving the heat sink arrangement efficiency.

[0012] Preferably, the driving assembly includes: a protective box, a first motor, a rotating rod, a first bevel gear and a second bevel gear. The protective box is arranged at intervals on the outer wall of one side of the top plate, and the protective box is rectangular in shape. One end of the variable pitch screw extends to the interior of the protective box, and the second bevel gear is arranged at the extended end of the variable pitch screw. The first motor is arranged on the top of the protective box, and the rotating rod is arranged vertically in the interior of the protective box, and the top end of the rotating rod is transmission-connected to the output end of the first motor, the first bevel gear is arranged on the outer circumference of the rotating rod, and the first bevel gear is meshed with the second bevel gear.

[0013] Preferably, the flip assembly includes: a sliding block, a flip motor, a guide rod and a flip clamping block, a plurality of guide rods are arranged inside the support, each support has two guide rods, and the sliding blocks are slidably arranged on the outer circumference of the guide rods at intervals.

[0014] The effect is that the flip assembly can flip the heat sink to avoid inconsistent directions of the heat sink and ensure the heat dissipation efficiency of the radiator.

[0015] Preferably, the flip motor is arranged on the side wall of the sliding block, and the flip motor corresponds to the sliding block one by one, a top extension rod is arranged at the output end of the flip motor, and a flip clamping block is arranged at one end of the top extension rod, and the flip clamping block is used to clamp the outer wall of one side of the heat sink.

[0016] Preferably, a push plate is provided on the top of the base, a slide plate is provided on the bottom of the push plate, a sliding groove is opened on the top surface of the base, and the slide plate can slide in the sliding groove, and pulleys are installed on both sides of the slide plate so that the push plate can slide better in the sliding groove when subjected to a push force.

[0017] Preferably, a fixed block is provided in the sliding groove, and a return spring 1 is provided on the outer wall of one side of the fixed block, and the return spring 1 is connected to the slide plate, and a return spring 1 is provided on both sides of each slide plate, so that the push plate can be reset to the initial position after moving, and the return spring 2 is provided on both sides of the sliding block, and the return spring 2 can pull the heat sink to reset.

[0018] Preferably, the welding assembly includes: a placement clamp, which is slidably arranged on an outer wall of one side of the support, and is used to place the ribs, and welding heads are arranged at intervals on the placement clamp, and the welding heads are used to weld the ribs and the heat sink, and a push rod is arranged on the outer wall of the placement clamp.

[0019] The effect is that the welding device can quickly weld the ribs and the arranged heat sinks, thereby improving welding efficiency and reducing manual workload.

[0020] The beneficial effects of the present invention are:

[0021] When welding the heat sink on the radiator, first place the heat sink between the two supports, and the heat sinks are separated by push plates. Then the clamping assembly clamps both sides of the heat sink. The variable pitch screw rotates to drive the clamping assembly to drive multiple heat sinks to move evenly and spread, and the spacing between multiple heat sinks is consistent. Then the laser irradiation pen irradiates the laser to determine whether the directions of the wavy fins on the heat sink are consistent. If one of the heat sinks is in the opposite direction, the flipping assembly corresponding to the heat sink will control the heat sink to flip. When the heat sink flips, it will push the push plates on both sides to make the top plates on both sides consistent. The push plate pushes the adjacent heat sink to move, so that the flipped heat sink has enough flipping space, and the push plate can prevent the flipped heat sink from contacting the connected heat sink to avoid scratches that affect the service life. After the flipping is completed, the reset spring 1 can drive the moving push plate to reset, and the reset spring 2 can drive the displaced heat sink to reset. Subsequently, the arranged heat sink and the ribs are welded through the welding assembly to make the heat sink arrangement interval faster, reduce the workload of manual arrangement and improve work efficiency. At the same time, the incorrectly arranged heat sink can be flipped to ensure the heat dissipation efficiency of the radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the variable pitch screw structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the clamping piece of the present invention.

[0025] Figure 4 It is a schematic diagram of the protection box structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the sliding block structure of the present invention.

[0027] Figure 6 It is a schematic diagram of the push plate structure of the present invention.

[0028] Figure 7 It is a schematic diagram of the heat sink structure of the present invention.

[0029] Reference numerals:

[0030] 10. Support; 11. Base; 12. Sliding groove; 20. Variable pitch screw; 21. Moving block; 22. Telescopic rod; 23. Clamping box; 24. Motor; 25. Bidirectional lead screw; 26. Clamping sheet; 27. Sliding block; 30. Protective box; 31. First motor; 32. Rotating rod; 33. First bevel gear; 34. Second bevel gear; 40. Push plate; 41. Slide plate; 42. Reset spring 1; 43. Fixed block; 50. Sliding block; 51. Guide rod; 52. Flip motor; 53. Extending rod; 54. Clamping block; 70. Reset spring 2; 80. Placement clip; 81. Push rod. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figures 1 to 7 As shown, the heat sink welding device for transformer of the present invention comprises: a support 10 and a base 11, the support 10 is arranged on both sides of the base 11, and also comprises: a clamping assembly, a variable pitch screw 20, a flip assembly, a push plate 40, a reset spring 1 42, a reset spring 2 70 and a welding assembly, a plurality of variable pitch screws 20 are rotatably arranged on the support 10, and each support 10 has two variable pitch screws 20, the clamping assembly is axially spaced and arranged on the variable pitch screw 20, and the variable pitch screw 20 is transmission-coordinated with the clamping assembly, the clamping assembly can clamp the heat sink, and a plurality of flip assemblies are arranged on the support 10 along the length direction. On the top, the flip assembly can flip the heat sink, a plurality of push plates 40 are slidingly arranged at intervals on the base 11, and the push plates 40 can play a pushing and protecting role when the heat sink is flipped, a reset spring 42 is arranged on the base 11, and the reset spring 42 is connected to the push plates 40 and corresponds one to one, and can reset the push plates 40 after displacement, a reset spring 2 70 is arranged on the support 10, and the reset spring 2 70 can reset the heat sink after displacement, a welding assembly is slidingly arranged on the support 10, and the welding assembly welds the arranged heat sinks and ribs, and a laser irradiation pen is arranged between the two supports 10.

[0033] When welding the heat sink on the radiator, first place the heat sink between the two supports 10, and the heat sinks are separated by the push plates 40, then the clamping assembly clamps the two sides of the heat sink, and the variable pitch screw 20 rotates to drive the clamping assembly to drive multiple heat sinks to move evenly, and the spacing between multiple heat sinks is consistent. Then the laser irradiation pen performs laser irradiation to determine whether the directions of the wavy fins on the heat sink are consistent. If one of the heat sinks is in the opposite direction, the flipping assembly corresponding to the heat sink will control the heat sink to flip, and the heat sink will push the push plates 40 on both sides while flipping, so that the push plates on both sides are consistent. The plate 40 pushes the adjacent heat sink to move, so that the flipped heat sink has enough flipping space, and the pushing plate 40 can prevent the flipped heat sink from contacting the connected heat sink, avoiding scratches that affect the service life. After the flipping is completed, the reset spring 42 can drive the moving pushing plate 40 to reset, and the reset spring 2 70 can drive the displaced heat sink to reset. Then, the arranged heat sink and the ribs are welded by the welding assembly to make the heat sink arrangement interval faster, reduce the workload of manual arrangement and improve work efficiency. At the same time, the incorrectly arranged heat sink can be flipped to ensure the heat dissipation efficiency of the radiator.

[0034] like Figures 1 to 4 As shown, the support 10 is located on both sides of the base 11, and two variable pitch screws 20 are rotatably arranged in each support 10, and the two variable pitch screws 20 are spaced apart along the height direction of the support 10, and top plates are arranged at both end portions of the support 10, and the ends of the variable pitch screws 20 are rotatably connected to the top plates, the clamping assembly includes a plurality of clamping units, and each clamping unit on the variable pitch screw 20 corresponds to a heat sink, and a driving assembly is arranged on the outer wall of the top plate, and the driving assembly can drive the variable pitch screw 20 to rotate.

[0035] like Figures 1 to 5 As shown, the clamping unit includes: a moving block 21, a telescopic rod 22, a motor 24, a bidirectional lead screw 25, a clamping piece 26 and a slider 27. The moving block 21 is arranged on the outer peripheral surface of the variable pitch screw 20. The moving block 21 can move along the axial direction of the variable pitch screw 20. The moving block 21 is provided with a U-shaped groove, and the telescopic rod 22 is arranged in the U-shaped groove. A clamping box 23 is arranged at one end of the telescopic rod 22. The clamping box 23 is also provided with a groove, and the bidirectional lead screw 25 is arranged in the clamping box 23 along the length direction. In the groove, the motor 24 is arranged on the outer wall of one side of the clamping box 23, and the output end of the motor 24 is transmission-connected with the bidirectional lead screw 25, the clamping plate 26 is arranged on the outer peripheral surface of the bidirectional lead screw 25, and there are two clamping plates 26, the clamping plates 26 can move toward each other to clamp the heat sink, the sliding blocks 27 are arranged on the upper top surface and the lower bottom surface of the moving block 21, and the sliding groove is arranged in the support 10 along the length direction, and the sliding block 27 can move in the sliding groove, so that the movement of the moving block 21 is more stable.

[0036] When the heat sinks are arranged, the telescopic rod 22 pushes the clamping box 23, but when the side of the opening of each clamping box 23 stops against the heat sink, the telescopic rod 22 stops pushing, and the motor 24 drives the bidirectional screw 25 to rotate, and the rotation of the bidirectional screw 25 drives the clamping plates 26 to move toward each other, so that the clamping plates 26 clamp the heat sink, and the rotation of the variable pitch screw 20 drives the multiple moving blocks 21 to move evenly in the axial direction, so that the heat sink moves evenly, so that the heat sink spacing is consistent, and the clamping assembly can clamp the four corner positions of each heat sink, so that the heat sink can move stably when the heat sink is arranged, avoiding the heat sink from falling when moving, improving the stability of the heat sink movement, and ensuring work efficiency.

[0037] The driving assembly includes: a protective box 30, a first motor 31, a rotating rod 32, a first bevel gear 33 and a second bevel gear 34. The protective box 30 is arranged at intervals on the outer wall of one side of the top plate, and the protective box 30 is rectangular in shape. One end of the variable pitch screw 20 extends to the interior of the protective box 30, and the second bevel gear 34 is arranged at the extended end of the variable pitch screw 20. The first motor 31 is arranged on the top of the protective box 30, and the rotating rod 32 is vertically rotatably arranged inside the protective box 30, and the top end of the rotating rod 32 is transmission-connected to the output end of the first motor 31, the first bevel gear 33 is arranged on the outer peripheral surface of the rotating rod 32, and the first bevel gear 33 is meshed with the second bevel gear 34.

[0038] When it is necessary to drive the variable pitch screw 20 to rotate, the first motor 31 can drive the rotating rod 32 to rotate, and the rotation of the rotating rod 32 drives the first bevel gear 33 to rotate. Since the first bevel gear 33 is meshed with the second bevel gear 34, the first bevel gear 33 drives the second bevel gear 34 to rotate, and the rotation of the second bevel gear 34 drives the variable pitch screw 20 to rotate, so that the heat sink can move evenly and diffusely. After the evenly diffused movement, the telescopic rod 22 contracts to disengage the clamping assembly from the heat sink, and the flipping assembly fixes the heat sink.

[0039] After the heat sinks are evenly spaced, in order to avoid inconsistent directions of the wavy fins on the heat sinks, the direction of each heat sink is determined. In this embodiment, a laser pen is provided on the side wall of the top plate, and the laser pen is used to illuminate the holes between the wavy fins. If the laser pen illuminates the other top plate, it means that the directions of the heat sinks are consistent. If the laser pen light is not seen on the other top plate, it means that the wavy fins on the heat sink block the light and the directions of the wavy fins are opposite (such as Figure 7 ), at this time, it is necessary to flip the component to flip the heat sink and adjust the direction of the wavy fins to ensure the heat dissipation efficiency of the radiator.

[0040] like Figures 5 and 6As shown, the flip assembly includes: a sliding block 50, a flip motor 52, a guide rod 51 and a flip clamping block 54, multiple guide rods 51 are arranged inside the support 10, each support 10 has two guide rods 51, the sliding block 50 is arranged on the outer peripheral surface of the guide rod 51 for sliding at intervals, the flip motor 52 is arranged on the side wall of the sliding block 50, and the flip motor 52 corresponds to the sliding block 50 one by one, the output end of the flip motor 52 is provided with a top extension rod 53, the flip clamping block 54 is arranged at one end of the top extension rod 53, and the flip clamping block 54 is used to clamp the outer wall of one side of the heat sink.

[0041] A push plate 40 is provided on the top of the base 11, and a slide plate 41 is provided at the bottom of the push plate 40. A sliding groove 12 is provided on the top surface of the base 11, and the slide plate 41 can slide in the sliding groove 12, and pulleys are installed on both sides of the slide plate 41 so that the push plate 40 can better slide in the sliding groove 12 when subjected to a push force. A fixed block 43 is provided in the sliding groove 12, and a return spring 1 42 is provided on the outer wall of one side of the fixed block 43, and the return spring 1 42 is connected to the slide plate 41, and a return spring 1 42 is provided on both sides of each slide plate 41, so that the push plate 40 can be reset to the initial position after moving, and the return spring 2 70 is provided on both sides of the sliding block 50, and the return spring 2 70 can pull the heat sink to reset, and the principle of the return spring 2 70 is roughly the same as that of the return spring 1 42, so it will not be repeated here.

[0042] When the heat sink needs to be flipped, the switch of the flip motor 52 corresponding to the heat sink is manually controlled, and the flip motor 52 drives the extension rod 53 to rotate, and the rotation of the extension rod 53 drives the flip clamping block 54 to rotate, and the rotation of the flip clamping block 54 drives the heat sink to rotate. When the heat sink rotates, the push plates 40 on both sides will move to both sides, and the push plates 40 can push the heat sinks on both sides to move, thereby giving the flipped heat sink enough flipping space. After the flipping is completed, the reset spring 1 42 can pull the push plate 40 to reset, and the reset spring 2 70 can pull the displaced heat sink to reset.

[0043] like Figure 1 As shown, the welding assembly includes: a placement clamp 80, which is slidably set on the outer wall of one side of the support 10, and is used to place the ribs. The placement clamp 80 can clamp the ribs, and welding heads are arranged at intervals on the placement clamp 80 for welding the ribs and the heat sink. A push rod 81 is arranged on the outer wall of the placement clamp 80, and the push rod 81 is used to push the placement clamp 80 closer to the heat sink.

[0044] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. Transformer heat sink welding device, including: A support (10), a base (11) and a welding assembly, wherein the support (10) is arranged on both sides of the base (11), and the welding assembly can weld the arranged heat sinks and ribs, and is characterized in that it also includes: a clamping assembly, a variable pitch screw (20), a flip assembly, a push plate (40), a first return spring (42) and a second return spring (70), a plurality of variable pitch screws (20) are rotatably arranged on the support (10) along the length direction, the clamping assembly is arranged on the variable pitch screw (20) at intervals along the axial direction, and the variable pitch screw (20) and the clamping assembly are transmission-coordinated so that the plurality of heat sinks are evenly diffused and moved. The heat sink (10) is movable, a plurality of flipping assemblies are arranged on the support (10) along the length direction, the flipping assemblies can flip the heat sink, a plurality of push plates (40) are arranged on the base (11) at intervals, and the push plates (40) can push the heat sinks on both sides and protect them when the heat sink is flipped, a return spring (42) is arranged on the base (11), and the return spring (42) is connected to the push plates (40) and corresponds to each other one by one, and can reset the push plates (40) after displacement, and a return spring (70) is arranged on the support (10), and the return spring (70) can reset the heat sink after displacement. The top of the base (11) is provided with a push plate (40), the bottom of the push plate (40) is provided with a slide plate (41), the top surface of the base (11) is provided with a sliding groove (12), and the slide plate (41) can slide in the sliding groove (12), and pulleys are installed on both sides of the slide plate (41) so that the push plate (40) can slide better in the sliding groove (12) when the push plate (40) is subjected to a push force, a fixed block (43) is provided in the sliding groove (12), and a return spring (42) is provided on the outer wall of one side of the fixed block (43), and the return spring (42) is connected to the slide plate (41), and each A return spring (42) is provided on both sides of the slide plate (41) so that the push plate (40) can be returned to the initial position after moving. The flip assembly comprises: a sliding block (50), a flip motor (52), a guide rod (51) and a flip clamping block (54). A plurality of guide rods (51) are arranged inside the support (10), and each support (10) has two guide rods (51). The sliding block (50) is slidably arranged on the outer peripheral surface of the guide rod (51) at intervals. The return spring (70) is arranged on both sides of the sliding block (50), and the return spring (70) can pull the heat sink to return to its original position.

2. The transformer heat sink welding device according to claim 1, characterized in that: Top plates are provided at both side ends of the support (10), and the ends of the variable pitch screw (20) are rotatably connected to the top plates. The clamping assembly comprises a plurality of clamping units, and each clamping unit on the variable pitch screw (20) corresponds to a heat sink. A driving assembly is provided on the outer wall of the top plate, and the driving assembly can drive the variable pitch screw (20) to rotate. A laser irradiation pen is provided on the side wall of the top plate.

3. The transformer heat sink welding device according to claim 2, characterized in that: The clamping unit comprises: a moving block (21), a telescopic rod (22), a motor (24), a bidirectional lead screw (25), a clamping plate (26) and a slider (27); the moving block (21) is arranged on the outer peripheral surface of the variable pitch screw (20); the moving block (21) can move along the axial direction of the variable pitch screw (20); the moving block (21) is provided with a U-shaped groove, and the telescopic rod (22) is arranged in the U-shaped groove; a clamping box (23) is arranged at one end of the telescopic rod (22); the clamping box (23) is also provided with a groove, and the bidirectional lead screw (25) is arranged in the groove of the clamping box (23) along the length direction; the motor (24) is arranged on one side outer wall of the clamping box (23), and the output end of the motor (24) is transmission-connected to the bidirectional lead screw (25); and the clamping plate (26) is arranged on the outer peripheral surface of the bidirectional lead screw (25).

4. The transformer heat sink welding device according to claim 3, characterized in that: The driving assembly comprises: a protection box (30), a first motor (31), a rotating rod (32), a first bevel gear (33) and a second bevel gear (34); the protection box (30) is arranged at intervals on an outer wall of one side of the top plate, and the protection box (30) is in a rectangular shape; one end of the variable pitch screw (20) extends to the inside of the protection box (30), and the second bevel gear (34) is arranged at the extended end of the variable pitch screw (20); the first motor (31) is arranged on the top of the protection box (30); the rotating rod (32) is arranged vertically rotatably inside the protection box (30), and the top end of the rotating rod (32) is transmission-connected to the output end of the first motor (31); the first bevel gear (33) is arranged on the outer peripheral surface of the rotating rod (32), and the first bevel gear (33) is meshed with the second bevel gear (34).

5. The transformer heat sink welding device according to claim 4, characterized in that: The flip motor (52) is arranged on the side wall of the sliding block (50), and the flip motor (52) corresponds to the sliding block (50) one by one. The output end of the flip motor (52) is provided with a top extension rod (53). The flip clamping block (54) is arranged at one end of the top extension rod (53). The flip clamping block (54) is used to clamp the outer wall of one side of the heat sink.

6. The transformer heat sink welding device according to claim 5, characterized in that: The welding assembly comprises: a placement clamp (80), the placement clamp (80) being slidably disposed on an outer wall of one side of the support (10), the placement clamp (80) being used to place ribs, and welding heads being arranged at intervals on the placement clamp (80), the welding heads being used to weld the ribs and the heat sink, and a push rod (81) being arranged on the outer wall of the placement clamp (80).

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