Welding tool for transformer cooling fins

Abstract

The utility model discloses a welding tool for transformer cooling fins. The welding tool comprises a rotating base and a supporting frame installed on the rotating base. The supporting frame comprises a bottom plate and a vertical plate located on one side of the bottom plate, and a transverse plate parallel to the bottom plate is arranged above the vertical plate. The transverse plate is provided with a plurality of insertion grooves used for placing cooling fins, and the vertical plate is further provided with an operation hole. After a plurality of cooling fins are stacked in sequence, the bottoms of the cooling fins are welded on one side of the supporting frame in an electric welding mode, then the supporting frame is rotated, the other sides of the cooling fins are welded together through the operation holes, and positioning welding of the two sides of the cooling fins can be easily and conveniently completed. Due to the fact that the inserting grooves and the bottom plate are matched together in the welding process, the phenomena of displacement and deformation occurring after the cooling fins are assembled and in the welding process can be reduced, and the production efficiency of the cooling fins can be improved. On the basis, the device is worthy of popularization and application.

Description

Technical Field

[0001] This utility model relates to the technical field of accessories used in transformer production, specifically a welding fixture for transformer heat sinks. Background Technology

[0002] Existing oil-immersed transformers typically have heat sinks installed on the outer wall of the enclosure to dissipate heat from the transformer enclosure. The conventional practice is to manually assemble the pre-formed heat sinks piece by piece, and then weld two adjacent heat sinks together using electric welding.

[0003] The problem with the above method is that after spot welding, the two heat sinks are prone to deformation due to welding stress. That is, the two adjacent heat sinks move towards each other at the weld point and move away from each other at the other end away from the weld point, causing the two heat sinks to have a V-shaped "opening" after welding. When welding the "opening", one needs to manually force to close the "opening", and the process of closing the "opening" can also easily cause the two heat sinks to be misaligned vertically. Utility Model Content

[0004] The purpose of this invention is to provide a welding fixture for transformer heat sinks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for transformer heat sinks, comprising a rotating base and a support frame mounted on the rotating base; the support frame includes a base plate, an upright plate located on one side of the base plate, and a horizontal plate parallel to the base plate above the upright plate; the horizontal plate is provided with a plurality of slots for placing heat sinks, and the upright plate is also provided with an operating hole.

[0006] As a preferred technical solution of this utility model: the base plate is further provided with a pad, and after the pad is connected to the base plate, the upper surface of the pad is flush with the lower bottom surface of the operating hole.

[0007] As a preferred technical solution of this utility model: the horizontal plate is further provided with a limiting strip, and the limiting strip is adapted to and connected with the groove provided on the horizontal plate.

[0008] As a preferred technical solution of this utility model: the number of grooves is multiple, and they are evenly distributed on the upper surface of the horizontal plate.

[0009] As a preferred technical solution of this utility model: both the limiting strip and the pad are magnetic.

[0010] As a preferred technical solution of this utility model: the rotating base includes a base and a mounting base; wherein, the base is provided with a shaft pin seat, and the mounting base is provided with a shaft pin rod, and the shaft pin rod is adapted to and connected to the shaft pin seat through a bearing.

[0011] As a preferred technical solution of this utility model, the support frame is movably mounted on the rotating base.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows: 1. When the heat sink is inserted into the slot, the inner wall of the slot can fit against the two sides of the heat sink, thus avoiding the phenomenon of "opening" at the other end after the two heat sinks are soldered at one end; since the slot can prevent the two heat sinks from "opening" together, there is no need to manually close the "opening". Therefore, while eliminating the phenomenon of misalignment of the heat sinks, it also makes the other end of the heat sink easy and convenient to solder.

[0013] 2. Since the support frame can rotate on the rotating base, the other end of the heat sink can be rotated to the worker's face by rotating the support frame. Therefore, firstly, it can reduce the worker's physical exertion; secondly, it can improve the welding efficiency of the heat sink; and thirdly, it can effectively reduce the number of times the welding gun power cord is dragged back and forth on the ground. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention in use;

[0015] Figure 2 This is an exploded view of the main structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the support frame of this utility model;

[0017] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0018] Figure 5 This is an exploded structural diagram of the rotating base of this utility model.

[0019] In the diagram: 1. Rotating base; 10. Base; 11. Mounting seat; 12. Shaft pin seat; 13. Shaft pin rod; 14. Bearing; 2. Heat sink; 3. Support frame; 30. Base plate; 31. Vertical plate; 32. Horizontal plate; 33. Operating hole; 34. Groove; 35. Slot; 4. Pad; 5. Limiting strip. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0021] Please see Figure 1-5 The present invention provides an embodiment of a welding fixture for a transformer heat sink, comprising a rotating base 1 and a support frame 3 mounted on the rotating base 1; the support frame 3 includes a base plate 30, an upright plate 31 located on one side of the base plate 30, and a horizontal plate 32 parallel to the base plate 30 above the upright plate 31; the horizontal plate 32 is provided with a plurality of slots 35 for placing heat sinks 2, and the upright plate 31 is also provided with operating holes 33.

[0022] In summary, when the heat sink 2 is inserted into the slot 35, the inner wall of the slot 35 can fit against the two sides of the heat sink 2, thus avoiding the phenomenon of "opening" at the other end after the two heat sinks are soldered at one end. Since the slot 35 can prevent the two heat sinks 2 from "opening," there is no need to manually close the "opening." Therefore, while eliminating the phenomenon of vertical misalignment of the heat sink 2, it also makes the other end of the heat sink 2 easy and convenient to solder.

[0023] Meanwhile, since the support frame 3 can rotate on the rotating base 1, the other end of the heat sink 2 can be rotated to the worker's face by rotating the support frame 3. Therefore, firstly, it can reduce the worker's physical exertion; secondly, it can improve the welding efficiency of the heat sink 2; and thirdly, it can effectively reduce the number of times the welding gun power cord is dragged back and forth on the ground.

[0024] In addition, the support frame 3 is U-shaped and the opening faces to the right, so the heat sink can be removed as a whole after all the heat sinks 2 are soldered.

[0025] Furthermore, since the base plate 30 is also provided with a pad 4, and after the pad 4 is connected to the base plate 30, the upper surface of the pad 4 is flush with the lower surface of the operating hole 33. Therefore, the pad 4 is used to raise the bottom of the heat sink 2 facing the operating hole 33, which makes it easier for the welding gun to be directly welded to the heat sink 2 through the operating hole 33.

[0026] Based on the above solution, since the horizontal plate 32 is also provided with a limiting strip 5, and the limiting strip 5 is adapted to and connected with the groove 34 provided on the horizontal plate 32, the limiting strip 5 can be used to prevent the heat sink 2 from moving excessively towards the vertical plate 31 during installation. In particular, when one side of all the heat sinks 2 is in contact with the limiting strip 5, the alignment of the heat sinks 2 can be further ensured. This effectively solves the problem of misalignment of the heat sinks 2.

[0027] Furthermore, since there are multiple grooves 34, which are evenly distributed on the upper surface of the horizontal plate 32, when the limiting strip 5 is connected to the grooves 34 at different positions, the device can be adapted to heat sinks 2 of different widths. For example, when the width of the heat sink 2 is large, the limiting strip 5 is moved towards the vertical plate 31; conversely, when the width of the heat sink 2 is small, the limiting strip 5 is moved away from the vertical plate 31.

[0028] Furthermore, to further enhance the stability of the heat sink 2 after it is connected to the support frame 3, both the limiting strip 5 and the pad 4 are magnetic. Since both the limiting strip 5 and the pad 4 have magnetic cores, the magnetic cores can be used to attract and hold the heat sink 2 in place, thus positioning the heat sink 2.

[0029] To reduce the production cost and processing difficulty of the rotating base 1, the rotating base 1 includes a base 10 and a mounting base 11; wherein, the base 10 is provided with a shaft pin seat 12, and the mounting base 11 is provided with a shaft pin rod 13, and the shaft pin rod 13 is adapted to and connected to the shaft pin seat 12 through a bearing 14. Based on this, the rotating base 1 is easy to process, the parts are easy to purchase, and thus the manufacturing cost of the rotating base 1 is reduced.

[0030] In addition, since the support frame 3 is movably mounted on the rotating base 1, specifically by using bolts to pass through the mounting seat 11 and connect to the base plate 30, the rotating base 1 and the support frame 3 are easy to assemble and disassemble, which in turn facilitates the installation and replacement of the support frame 3 and the rotating base 1.

[0031] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A welding fixture for transformer fins, characterized by: The utility model relates to a rotating base (1) and support frame (3) installed on the rotating base (1). The support frame (3) includes a bottom plate (30), a vertical plate (31) on one side of the bottom plate (30), and a horizontal plate (32) above the vertical plate (31) parallel to the bottom plate (30). The horizontal plate (32) is provided with a plurality of slots (35) for placing heat dissipation fins (2), and the vertical plate (31) is also provided with an operation hole (33).

2. The welding tool for transformer fins according to claim 1, characterized in that: The bottom plate (30) is also provided with a backing plate (4), and after the backing plate (4) is connected with the bottom plate (30), the upper surface of the backing plate (4) is flush with the lower bottom surface of the operation hole (33).

3. The welding tool for transformer fins according to claim 2, characterized in that: The horizontal plate (32) is also provided with a limiting strip (5), and the limiting strip (5) is connected with the recess (34) provided on the horizontal plate (32).

4. The welding tool for transformer fins according to claim 3, wherein: The number of recesses (34) is multiple, and they are distributed equidistantly on the upper surface of the horizontal plate (32).

5. A welding fixture for transformer fins as defined in claim 4, wherein: The limiting strip (5) and the backing plate (4) both have magnetic properties.

6. The welding tool for transformer fins according to claim 1, wherein: The rotating base (1) includes a base (10) and a mounting seat (11); wherein the base (10) is provided with a shaft pin seat (12), and the mounting seat (11) is provided with a shaft pin rod (13), and the shaft pin rod (13) is connected with the shaft pin seat (12) through the bearing (14).

7. A welding fixture for transformer fins as defined in claim 6, wherein: The support frame (3) is movably mounted on the rotating base (1).

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