Cooling fin and auxiliary welding tool

Abstract

The utility model relates to the technical field of heat dissipation fins, and discloses a heat dissipation fin and an auxiliary welding tool, the heat dissipation fin comprises a substrate and a heat dissipation part, and the heat dissipation part is arranged on the substrate; a plurality of heat dissipation holes are formed in the heat dissipation part; a heat conducting surface in contact with the substrate is arranged on the outer wall of the heat dissipation hole; a plurality of reinforcing ribs are arranged on the inner walls of the heat dissipation holes close to the heat conduction surface; a limiting groove is formed between every two adjacent reinforcing ribs. An auxiliary welding tool for cooling fins comprises a mounting frame, a cooling unit and a heat conduction pressing plate, and the heat conduction pressing plate is arranged on the mounting frame; a plurality of heat conduction pressing plates are arranged; the heat conduction pressing plate is arranged in the limiting groove and makes contact with the inner wall of the limiting groove. The heat dissipation device has the effects that the weight of the heat dissipation device is reduced, and the heat dissipation efficiency of the heat dissipation device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat dissipation fins, in particular to a heat dissipation fin and an auxiliary welding tool. BACKGROUND

[0002] As the core equipment of the fifth generation mobile communication network, the 5G base station undertakes the important task of wireless signal sending and receiving, and provides high-speed, low-delay and large-capacity network connection for terminals such as mobile phones and Internet of Things devices, and is the key infrastructure to realize 5G network coverage and performance improvement. However, in the process of operation, due to the execution of high-frequency signal processing, large-scale MIMO antenna operation and high-density calculation and other tasks, the 5G base station will generate a large amount of heat.

[0003] At present, the heat dissipation device of the 5G base station usually includes a substrate and a heat dissipation fin, and the heat dissipation fin is arranged on the substrate. Its working principle is to transmit the heat generated inside the base station to the heat dissipation fin through the substrate, and then reduce the temperature of the base station by means of heat exchange between the heat dissipation fin and the external airflow. However, the existing heat dissipation device is usually integrally formed by casting, and although this structure is relatively stable in overall strength, it also brings a series of problems.

[0004] Firstly, due to the limitation of the casting process, the thickness of the substrate and the heat dissipation fin is relatively thick, usually about 1mm, which makes the overall weight of the heat dissipation device larger, not only increases the production cost, but also brings inconvenience to the installation and maintenance of the base station. Secondly, the increase of the thickness of the heat dissipation fin leads to the lengthening of the heat conduction path, which indirectly reduces the heat dissipation efficiency. The thicker heat dissipation fin limits the effective use of its surface area, reduces the heat exchange area with the external air, and further weakens the heat dissipation effect. In addition, the over-thickness of the substrate will increase the thermal resistance, hinder the rapid conduction of heat from the heat source to the heat dissipation fin, and thus affect the performance of the whole heat dissipation device. CONTENT OF THE INVENTION

[0005] In order to reduce the weight of the heat dissipation device and improve the heat dissipation efficiency of the heat dissipation device, the application provides a kind of heat dissipation fin and auxiliary welding tool.

[0006] The heat dissipation fin provided by the application adopts the following technical scheme:

[0007] A kind of heat dissipation fin, including substrate and heat dissipation part, wherein:

[0008] The heat dissipation part is arranged on the substrate;

[0009] A plurality of heat dissipation holes are arranged on the heat dissipation part;

[0010] A heat conduction surface in contact with the substrate is arranged on the outer wall of the heat dissipation hole;

[0011] A plurality of reinforcing ribs are arranged on the inner wall of the heat dissipation hole close to the heat conduction surface;

[0012] The limiting grooves are formed between two adjacent reinforcing ribs.

[0013] Optionally, the heat dissipation part comprises a heat dissipation frame and a heat conduction sheet.

[0014] The heat dissipation frame is arranged on the substrate.

[0015] The heat conduction sheet is arranged inside the heat dissipation frame and divides the internal area of the heat dissipation frame into multiple heat dissipation areas.

[0016] Optionally, the heat dissipation part comprises multiple heat dissipation ring groups.

[0017] The heat dissipation ring group comprises multiple heat dissipation rings.

[0018] Optionally, the heat dissipation part comprises an integrally formed heat dissipation sheet.

[0019] The heat dissipation sheet is arranged in a folded manner.

[0020] Optionally, the substrate is provided with a positioning groove on the side close to the heat dissipation part.

[0021] The heat conduction surface is arranged in the positioning groove.

[0022] The application further provides an auxiliary welding tool for heat dissipation fins, which is used in combination with a heat dissipation fin and comprises a mounting frame, a cooling unit and a heat conduction pressing plate, wherein:

[0023] The heat conduction pressing plate is arranged on the mounting frame.

[0024] The heat conduction pressing plate is movably provided with multiple heat conduction pressing plates.

[0025] The heat conduction pressing plate is insertedly matched with the limiting groove.

[0026] Optionally, the mounting frame is provided with a cooling hole.

[0027] A pair of sliding grooves penetrating the hole wall of the cooling hole are arranged on the hole wall of the cooling hole.

[0028] Multiple mounting grooves penetrating the hole wall of the cooling hole are arranged on the hole wall of the cooling hole along the length direction of the sliding groove.

[0029] The heat conduction pressing plate penetrates the sliding groove and is slidably matched with the sliding groove.

[0030] A locking bolt is threadedly connected on the mounting groove, and the end of the locking bolt is in contact with the heat conduction pressing plate.

[0031] Optionally, a support cooling unit is arranged in the cooling hole.

[0032] The support cooling unit comprises a cooling frame and a cooling source;

[0033] The cooling frame is arranged inside the cooling hole;

[0034] The heat-conducting pressing plate is in contact with the cooling frame;

[0035] The cooling frame is internally provided with a cooling channel;

[0036] The cooling source is in communication with the cooling channel.

[0037] Optionally, the cooling frame is provided with an escape hole penetrating through the cooling frame.

[0038] In summary, the present application has at least one of the following beneficial technical effects:

[0039] 1. The heat dissipation fins increase the contact area with air and shorten the heat transfer path by optimizing the structural design of the heat dissipation part (such as heat dissipation holes, heat-conducting surfaces, heat dissipation ring groups, etc.), and significantly improve the heat dissipation efficiency by using the lightweight and high thermal conductivity of aluminum sheets. Especially in windy environments, the design of triangular heat dissipation holes and heat dissipation rings enhances the structural stability, ensuring that the heat dissipation performance is not affected by the environment;

[0040] 2. The structural design of the heat dissipation part (such as reinforcing ribs, limiting grooves, triangular heat dissipation areas, etc.) effectively improves the overall stability of the heat dissipation fins. Especially in windy environments, the triangular structure can withstand greater pressure, avoiding deformation or damage caused by external environments, thereby prolonging the service life of the heat dissipation fins;

[0041] 3. The auxiliary welding tooling solves the problem of deformation of the heat dissipation part due to high temperature during brazing by the cooperation of the heat-conducting pressing plate and the cooling unit. The heat-conducting pressing plate not only tightly presses the heat dissipation part to ensure the close fit of the heat-conducting surface with the substrate, but also transfers the heat of the brazing area to the cooling unit for heat exchange and cooling, further reducing the risk of deformation and improving the welding quality. At the same time, the adjustable design of the tooling adapts to heat dissipation holes in different positions, improving the flexibility and efficiency of welding. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application.

[0043] Figure 2 is a schematic diagram of the overall structure of embodiment 2 of the present application.

[0044] Figure 3 is a schematic diagram of the overall structure of embodiment 3 of the present application.

[0045] Figure 4 is a schematic diagram of the overall structure of embodiment 4 of the present application.

[0046] Figure 5 is a schematic diagram of the overall structure of embodiment 5 of the present application.

[0047] Figure 6 is a schematic diagram of the structure of an auxiliary welding tool for heat dissipation fins.

[0048] Explanation of reference signs:

[0049] 1, substrate; 11, positioning groove; 2, heat dissipation part; 21, heat dissipation hole; 22, reinforcing rib; 23, limiting groove; 3, heat dissipation frame; 31, heat conduction sheet; 4, heat dissipation ring; 5, heat dissipation fin; 6, mounting bracket; 61, cooling hole; 62, sliding groove; 63, mounting groove; 64, locking bolt; 7, heat conduction pressing plate; 71, adjusting part; 72, pressing part; 8, cooling frame; 81, escape hole; 82, cooling channel. DETAILED DESCRIPTION

[0050] The following will be described in detail below with reference to the accompanying Figures 1-6 The present application will be further described in detail.

[0051] The present application discloses a heat dissipation fin.

[0052] Embodiment 1

[0053] A heat dissipation fin includes a substrate 1 and a heat dissipation part 2, the heat dissipation part 2 is mounted on the substrate 1, and the substrate 1 is mounted on the outer frame of a 5G base station. A plurality of heat dissipation holes 21 are provided on the heat dissipation part 2, a heat conduction surface is provided on the outer wall of the heat dissipation hole 21, the heat conduction surface is in contact with the substrate 1, reinforcing ribs 22 are provided on the heat dissipation part 2 near the heat dissipation holes 21, and limiting grooves 23 are formed between adjacent two reinforcing ribs 22.

[0054] The implementation principle of the heat dissipation fin of embodiment 1 of the present application is as follows: when dissipating heat from the 5G base station, the heat generated by the 5G base station is conducted to the substrate 1, the substrate 1 transmits the heat to the heat dissipation part 2 through the heat conduction surface of the heat dissipation part 2, the hole wall of the heat dissipation hole 21 contacts with the external airflow for heat exchange, so as to cool the 5G base station. The heat dissipation part 2 is made of aluminum sheet, so as to reduce the weight of the overall heat dissipation part 2, and at the same time, since the thickness of the aluminum sheet is small, the aluminum sheet has a short heat conduction path, which further improves the heat conduction efficiency. The heat dissipation part 2 is fixed on the substrate 1 by brazing according to the position needed to dissipate heat.

[0055] Embodiment 2

[0056] The difference between the present embodiment and embodiment 1 is that the heat dissipation part 2 includes a heat dissipation frame 3 and a heat conduction sheet 31.

[0057] The heat dissipation frame 3 is in the form of a rectangular frame as a whole, and a plurality of heat conduction sheets 31 are arranged, which divide the internal space of the heat dissipation frame 3 into a plurality of heat dissipation areas, and the plurality of heat dissipation areas form heat dissipation holes 21, the hole walls of the heat dissipation holes 21 have a large contact area with air, and the heat exchange and cooling efficiency is improved. The longitudinal section of the heat dissipation area is in the form of a polygon, which can be a triangle, a quadrilateral, a pentagon, etc. In the embodiment of the application, the longitudinal section of the heat dissipation area is in the form of a triangle, and compared with other polygons, the triangular structure is more stable. Since the 5G base station is located in a place where there may be strong wind, the heat dissipation hole 21 with a triangular longitudinal section is convenient to keep stable under a large pressure.

[0058] The implementation principle of the heat dissipation fin in the embodiment 2 of the application is to further divide the heat dissipation frame 3 into a plurality of heat dissipation areas to increase the contact area with air and improve the heat exchange efficiency. Meanwhile, the heat dissipation frame 3 is relatively stable.

[0059] Embodiment 3

[0060] The difference between the embodiment and the embodiment 2 is that the positioning groove 11 is arranged on the side of the substrate 1 close to the heat dissipation part 2, and the heat conduction surface of the heat dissipation part 2 is in contact with the groove wall of the positioning groove 11.

[0061] The implementation principle of the heat dissipation fin in the embodiment 3 of the application is that before the heat dissipation part 2 is brazed in the positioning groove 11, the heat conduction surface of the heat dissipation part 2 is attached to the groove wall of the positioning groove 11 to complete positioning, so that the possibility of deformation of the heat dissipation part 2 due to uneven heating during brazing and the misalignment of the welding position are reduced, and meanwhile, the contact surface between the heat dissipation part 2 and the substrate 1 is increased to improve the heat dissipation efficiency.

[0062] Embodiment 4

[0063] The difference between the embodiment and the embodiment 3 is that the heat dissipation part 2 includes a plurality of heat dissipation ring groups 4, and each group of heat dissipation rings 4 includes a plurality of heat dissipation rings 4. The heat dissipation ring group 4 is arranged at the position of the substrate 1 where heat dissipation is required, and different numbers of heat dissipation rings 4 are installed according to the local heat dissipation requirement of the substrate 1. The longitudinal section of the heat dissipation ring 4 is in the form of a circle, a triangle or a quadrilateral, etc. The outer wall of the heat dissipation ring 4 is brazed on the substrate 1. In the embodiment of the application, the heat dissipation ring 4 is in the form of a triangle to improve the installation stability of the heat dissipation ring 4. When the positioning ring is positioned by the positioning groove 11, the positioning groove 11 can be provided in a plurality of forms, and a single heat dissipation ring 4 is positioned by a single positioning groove 11.

[0064] The principle of the embodiment 4 of the application is that the heat dissipation rings 4 are installed according to the positions of the substrate 1 needing to be cooled, and different numbers of heat dissipation rings 4 are installed according to the heat dissipation demand, so as to further reduce the overall weight on the basis of ensuring the heat exchange efficiency. The overall structure of the heat dissipation ring 4 is relatively convenient to produce, and since the heat dissipation ring 4 is relatively small and the longitudinal section of the heat dissipation ring 4 is triangularly arranged, the stability of the heat dissipation ring 4 is relatively improved in windy days.

[0065] Embodiment 5

[0066] The difference between the embodiment and the embodiment 3 is that the heat dissipation part 2 comprises integrally formed heat dissipation fins 5, the heat dissipation fins 5 are integrally arranged in a folded manner, the adjacent bending positions of the heat dissipation fins 5 are in contact with each other, so as to form a heat dissipation area, the longitudinal section of the heat dissipation area can be triangular, quadrangular or pentagonal, and in the embodiment of the application, the longitudinal section of the heat dissipation area is triangularly arranged, and the triangle is more stable than other shapes.

[0067] The principle of the embodiment 5 of the application is that the heat dissipation fins 5 of the heat dissipation part 2 are integrally formed by bending a large piece of aluminum sheet, which reduces the cutting amount of the heat dissipation fins 5, improves the utilization rate of the heat dissipation fins 5, and is convenient for forming heat dissipation fins 5 of different shapes.

[0068] The application also provides an auxiliary welding tool for heat dissipation fins, which comprises a mounting frame 6, a cooling unit and a plurality of heat-conducting pressing plates 7 arranged movably on the mounting frame 6, and the heat-conducting pressing plates 7 are in plug-in cooperation with the limiting grooves 23.

[0069] When the heat dissipation part 2 is welded on the substrate 1, the substrate 1 is placed on the welding table, the mounting frame 6 is installed on the welding table close to the substrate 1, then the position of the heat-conducting pressing plate 7 is adjusted, the heat-conducting pressing plate 7 is inserted into the limiting groove 23, and the heat dissipation part 2 is pressed tightly in the positioning groove 11 through the heat-conducting pressing plate 7. When the heat dissipation part 2 and the substrate 1 are brazed, the temperature is relatively high at this time, the thin aluminum material of the heat dissipation part 2 is prone to deformation under high temperature, the heat-conducting pressing plate 7 presses the heat dissipation part 2, so that the heat-conducting surface is attached to the substrate 1, and the contact surface of the heat-conducting surface and the substrate 1 is ensured. At the same time, the heat-conducting pressing plate 7 transmits the temperature near the brazing to the cooling unit for heat exchange and cooling, so as to reduce the possibility of deformation of the heat dissipation part 2 and further ensure the attachment of the heat-conducting surface and the substrate 1.

[0070] The shape of the heat-conducting pressing plate 7 is matched with the shape of the limiting groove 23, and when the heat-conducting pressing plate 7 is placed in the limiting groove 23, the heat-conducting pressing plate 7 and the inner wall of the heat-dissipating hole 21 close to the heat-dissipating surface are tightly attached, and the contact surface between the heat-conducting pressing plate 7 and the inner wall of the heat-dissipating hole 21 is increased. When the heat-conducting pressing plate 7 and the inner wall of the heat-dissipating hole 21 are in contact, the heat-conducting surface is always in contact with the base plate 1 during the brazing process, and the larger contact surface between the heat-conducting pressing plate 7 and the inner wall of the heat-dissipating hole 21 also facilitates the heat conduction of the heat from the inner wall of the heat-dissipating hole 21, reduces the temperature near the brazing position due to the excessively high temperature, and avoids the possibility of deformation of the thinner aluminum material due to high temperature.

[0071] The mounting frame 6 is provided with a cooling hole 61 penetrating through the mounting frame 6, and a pair of sliding grooves 62 are arranged on the inner wall of the cooling hole 61 along the length direction of the cooling hole 61, the sliding grooves 62 penetrate through the hole wall of the cooling hole 61, the heat-conducting pressing plate 7 penetrates through the sliding grooves 62 and is in sliding cooperation with the sliding grooves 62, so that the heat-conducting pressing plate 7 moves relative to the mounting frame 6 on the X-axis and the Y-axis through the sliding grooves 62 to adapt to the position of the heat-dissipating hole 21.

[0072] The heat-conducting pressing plate 7 comprises an adjusting part 71 and a pressing part 72 connected together, the adjusting part 71 is arranged in a plate shape to facilitate movement in the sliding grooves 62, and the pressing part 72 is similar in shape to the inner wall of the heat-dissipating hole 21, and in the embodiment of the application, the pressing part 72 is also arranged in a plate shape. In order to facilitate heat conduction, the heat-conducting pressing plate 7 is an aluminum plate, and in order to facilitate the limiting of the heat-dissipating hole 21 by the heat-conducting pressing plate 7, the heat-conducting pressing plate 7 has a certain thickness.

[0073] A plurality of mounting grooves 63 are arranged on the inner wall of the cooling hole 61 along the length direction of the cooling hole 61, the mounting grooves 63 are located between the pair of sliding grooves 62, and a locking bolt 64 is threadedly connected to the mounting grooves 63, the locking bolt 64 is threadedly connected with the mounting grooves 63, and one end of the locking bolt 64 is in contact with the adjusting part 71 of the heat-conducting pressing plate 7.

[0074] Since the adjusting part 71 of the heat-conducting pressing plate 7 is generally thin to facilitate heat conduction, when the heat-conducting pressing plate 7 is abutted by the locking bolt 64, the adjusting part 71 of the heat-conducting pressing plate 7 is prone to deformation, which affects the subsequent movement of the adjusting part 71 of the heat-conducting pressing plate 7 in the sliding grooves 62.

[0075] In order to reduce the possibility of deformation of the adjusting part 71 of the heat-conducting pressing plate 7 due to the force of the locking bolt 64 while ensuring the fixation of the heat-conducting pressing plate 7, a cooling support unit is arranged inside the cooling hole 61 along the length direction of the cooling hole 61. The cooling support unit includes a cooling frame 8 and a cooling source. The cooling frame 8 is flush with the sliding groove 62. When the heat-conducting pressing plate 7 is placed on the mounting frame 6, the adjusting part 71 of the heat-conducting pressing plate 7 is in contact with the cooling frame 8, and the locking bolt 64 presses the heat-conducting pressing plate 7 against the cooling frame 8. On the basis of ensuring the fixation of the heat-conducting pressing plate 7, the possibility of deformation of the heat-conducting pressing plate 7 is reduced. At the same time, by pressing the heat-conducting pressing plate 7 against the cooling frame 8 through the locking bolt 64, the fixation is more reliable compared with directly pressing the heat-conducting pressing plate 7 against the cooling frame 8 through the locking bolt 64.

[0076] A cooling channel 82 is arranged inside the cooling frame 8 along the length direction of the cooling frame 8. The cooling channel 82 is in communication with a cooling source. In the embodiment, the cooling source is cold air. The cold air exchanges heat with the heat-conducting pressing plate 7 placed in the cooling frame 8 to cool the heat-conducting pressing plate 7. In order to further improve the heat exchange effect, the cooling frame 8 is provided with an escape hole 81. The cold air inside the cooling frame 8 escapes from the escape hole 81 to the inside of the cooling hole 61, thereby increasing the contact area with the heat-conducting pressing plate 7 to better exchange heat and cool. At the same time, part of the cold air may escape from the sliding groove 62, further increasing the contact area with the heat-conducting pressing plate 7, thereby improving the cooling effect on the heat-conducting pressing plate 7 and further improving the cooling effect on the temperature near the brazing, and reducing the possibility of deformation of the heat dissipation part 2 due to high temperature caused by brazing.

[0077] The implementation principle of the auxiliary welding tool for the heat dissipation fin in the embodiment is as follows: first, the base plate 1 is placed on the welding table, and the mounting frame 6 is installed on the welding table close to the base plate 1. The position of the heat-conducting pressing plate 7 is adjusted so that it is inserted into the limiting groove 23, thereby pressing the heat dissipation part 2 in the positioning groove 11 to ensure that the heat-conducting surface is tightly attached to the base plate 1. During brazing, the heat-conducting pressing plate 7 prevents the heat dissipation part 2 from deforming due to high temperature by pressing it, and at the same time, transfers the heat near the brazing to the cooling unit to exchange heat and cool through the cooling unit, thereby further reducing the possibility of deformation of the heat dissipation part 2. The heat-conducting pressing plate 7 moves relative to the mounting frame 6 on the X-axis and Y-axis through the sliding groove 62 to adapt to heat dissipation holes 21 at different positions. The heat-conducting pressing plate 7 includes an adjusting part 71 and a pressing part 72. The adjusting part 71 moves in the sliding groove 62, and the pressing part 72 is similar in shape to the inner wall of the heat dissipation hole 21 to increase the contact area and lead out heat. The cooling hole 61 is provided with a mounting groove 63. The heat-conducting pressing plate 7 is pressed against the cooling frame 8 by the locking bolt 64 to avoid deformation of the adjusting part 71 due to force. At the same time, the cooling channel 82 inside the cooling frame 8 is in communication with a cooling source. The cold air is released through the escape hole 81 to further improve the heat exchange effect, ensure that the temperature of the brazing area is effectively controlled, and thereby reduce the risk of deformation of the heat dissipation part 2 due to high temperature.

[0078] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A heat dissipation fin characterized by: The heat dissipation fin comprises a substrate (1) and a heat dissipation part (2), wherein: The heat dissipation part (2) is arranged on the substrate (1); A plurality of heat dissipation holes (21) are arranged on the heat dissipation part (2); A heat conduction surface in contact with the substrate (1) is arranged on the outer wall of the heat dissipation hole (21); A plurality of reinforcing ribs (22) are arranged on the inner wall of the heat dissipation hole (21) close to the heat conduction surface; A limiting groove (23) is formed between two adjacent reinforcing ribs (22).

2. The heat dissipation fin according to claim 1, wherein: The heat dissipation part (2) comprises a heat dissipation frame (3) and a heat conduction sheet (31); The heat dissipation frame (3) is arranged on the substrate (1); The heat conduction sheet (31) is arranged inside the heat dissipation frame (3) and divides the internal area of the heat dissipation frame (3) into a plurality of heat dissipation areas.

3. The heat dissipation fin according to claim 1, wherein: The heat dissipation part (2) comprises a plurality of heat dissipation ring groups (4); Each heat dissipation ring group (4) comprises a plurality of heat dissipation rings (4).

4. The heat dissipation fin according to claim 1, wherein: The heat dissipation part (2) comprises an integrally formed heat dissipation sheet (5); The heat dissipation sheet (5) is arranged in a folded shape.

5. The heat dissipation fin according to claim 2 or 3 or 4, wherein: A positioning groove (11) is arranged on one side of the substrate (1) close to the heat dissipation part (2); The heat conduction surface is arranged in the positioning groove (11).

6. An auxiliary welding tool for heat dissipation fins, which is used in combination with the heat dissipation fin according to any one of claims 1 to 5, characterized in that: The heat dissipation fin comprises a mounting rack (6), a cooling unit and a heat conduction pressing plate (7), wherein: The heat conduction pressing plate (7) is arranged on the mounting rack (6); A plurality of heat conduction pressing plates (7) are movably arranged; The heat conduction pressing plate (7) is inserted and matched with the limiting groove (23).

7. The auxiliary welding tool for the heat dissipation fin according to claim 6, wherein: A cooling hole (61) is arranged on the mounting rack (6); A pair of sliding grooves (62) penetrating the hole wall of the cooling hole (61) are arranged on the hole wall of the cooling hole (61); A plurality of mounting grooves (63) penetrating the hole wall of the cooling hole (61) are arranged on the hole wall of the cooling hole (61) along the length direction of the sliding groove (62); The heat conduction pressing plate (7) penetrates the sliding groove (62) and is slidably matched with the sliding groove (62); A locking bolt (64) is threadedly connected on the mounting groove (63), and the end of the locking bolt (64) is in contact with the heat conduction pressing plate (7).

8. The auxiliary welding tool for the heat dissipation fin according to claim 7, wherein: A support cooling unit is arranged in the cooling hole (61); The support cooling unit comprises a cooling frame (8) and a cooling source; The cooling frame (8) is arranged inside the cooling hole (61); The heat conduction pressing plate (7) is in contact with the cooling frame (8); A cooling channel (82) is arranged inside the cooling frame (8); The cooling source is in communication with the cooling channel (82).

9. The auxiliary welding tool for the heat dissipation fin according to claim 8, wherein: The cooling frame (8) is provided with an escape hole (81) penetrating through the cooling frame (8).

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