Cooling fin for friction stir welding

Abstract

The utility model provides a radiating fin for friction stir welding, which belongs to the technical field of radiating fins and comprises an aluminum heat-conducting plate, extension blocks fixed on two sides of the aluminum heat-conducting plate and fixing structures arranged on the outer sides of the extension blocks. The fixing structure comprises a housing arranged on the outer side of the extending block in a sleeving mode, a positioning assembly arranged on one side of the interior of the housing and a pressing wheel rotationally connected to the interior of one side of the housing. According to the utility model, the first guide pipe is inserted into the guide groove, so that the left and right groups of extension blocks are aligned, the housing sleeves the outer sides of the extension blocks, the pinch roller is pushed to rotate to extrude the two groups of extension blocks to be close to each other, and the position between the two groups of extension blocks is locked and fixed, so that the position fixing function of the radiating fin is realized; and the position between the two sets of aluminum heat conduction plates is conveniently limited, so that welding seams are aligned, workers do not need to adjust the aluminum heat conduction plates in the clamping process, and the machining efficiency of the cooling fins is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat sinks, and more specifically, to a heat sink welded by friction stir welding. Background Art

[0002] The main function of a heat sink is to help a device dissipate heat and cool down. In some high-performance devices, such as high-performance computers and servers, since the heat generated during operation is very large, using a heat sink can accelerate heat dissipation and ensure that the device operates at a stable working temperature. During the production and processing of large heat sinks, due to the heat sink welded by friction stir welding technology having excellent thermal performance and vibration resistance characteristics, it is necessary to use friction stir welding to weld and fix multiple groups of heat sinks.

[0003] After retrieval, a patent with the Chinese patent application number 202222392523.8 discloses a new type of heat sink, including a bottom plate and several heat sinks; each of the heat sinks is fixedly connected to the top surface of the bottom plate, and the heat sinks are evenly distributed at equal intervals; it further includes: a cleaning frame slidably assembled on the bottom plate; a guiding component arranged on the bottom plate to limit and guide the movement of the cleaning frame; a cleaning component arranged on the cleaning frame. The heat sink proposed by the utility model replaces the traditional heat sink structure, facilitating the staff to clean the heat sink, and at the same time being able to ensure the cleaning effect of the heat sink, improving the practicability of the heat sink. Secondly, it is convenient for users to clean the cleaning cotton;

[0004] The above patent still has the following deficiencies: (1) The defect of not being convenient to limit the position between two groups of aluminum heat-conducting plates. Since the heat sink needs to be placed in a welding fixture during the welding process to adjust the position of the heat sink so that the sides of the two groups of aluminum heat-conducting plates are aligned, the adjustment process is cumbersome and time-consuming, reducing the production efficiency of the heat sink;

[0005] (2) The defect that the fins are easily bent. Since the heat sink needs to use a tooling to support the position of the weld during the friction stir welding process to prevent the weld from deforming downward, but since the tooling needs to contact the heat-conducting fins, it is easy to cause the heat-conducting fins to be tilted and deformed by force, reducing the heat dissipation effect of the heat-conducting fins.

[0006] Therefore, there is an urgent need for a heat sink welded by friction stir welding to solve the above problems. Summary of the Utility Model

[0007] The purpose of the present utility model is to address the problem that currently, there is a defect of not being convenient to limit the position between two groups of aluminum heat-conducting plates. Since the heat sink needs to be placed in a welding fixture during the welding process to adjust the position of the heat sink so that the sides of the two groups of aluminum heat-conducting plates are aligned, the adjustment process is cumbersome and time-consuming, reducing the production efficiency of the heat sink.

[0008] To achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0009] A heat sink using friction stir welding, including an aluminum heat conducting plate, and further including,

[0010] Extension blocks, fixed on both sides of the aluminum heat conducting plate, and weld seams are opened inside the aluminum heat conducting plate;

[0011] A fixing structure, arranged on the outer side of the extension blocks, wherein the fixing structure includes a housing sleeved on the outer side of the extension blocks, a positioning component arranged on one side inside the housing, and a pressing wheel rotatably connected to the inside of one side of the housing;

[0012] Heat conducting fins, fixed on the top of the aluminum heat conducting plate;

[0013] Fixing bolts, inserted into the inside of both sides of the aluminum heat conducting plate;

[0014] A reinforcing structure, arranged inside the heat conducting fins, for supporting and fixing the position of the heat conducting fins;

[0015] Support rods, installed on both sides of the top of the aluminum heat conducting plate, and mounting frames are fixed at the tops of the support rods, and mounting hole grooves are opened inside the mounting frames.

[0016] As a preferred technical solution of this application, the positioning component includes a second guiding tube fixed on one side inside the housing, a guiding groove opened inside a group of extension blocks, and a first guiding tube inserted into the guiding groove and connected to the other group of extension blocks.

[0017] Through the above technical solution, by inserting the first guiding tube into the inside of the guiding groove, the left and right groups of extension blocks are aligned, the housing is sleeved on the outer side of the extension blocks, the pressing wheel is pushed to rotate and squeeze the two groups of extension blocks to approach each other, reducing the gaps inside the weld seams, and locking and fixing the positions between the two groups of extension blocks.

[0018] As a preferred technical solution of this application, the second guiding tube and the first guiding tube are located on the same horizontal center line, and a sliding structure is formed between the second guiding tube and the guiding groove.

[0019] Through the above technical solution, by inserting the second guiding tube into the inside of the guiding groove, the placement position of the housing 201 is restricted.

[0020] As a preferred technical solution of this application, a rotating structure is formed between the pressing wheel and the housing, and a groove is opened at the bottom end of the housing.

[0021] Through the above technical solution, by the pressing wheel rotating on one side of the housing, the pressing wheel squeezes the two groups of extension blocks to approach each other during rotation.

[0022] As a preferred technical solution of the present application, the reinforcement structure includes a reinforcement rod inserted inside the heat dissipation fins, a pipe body fixed on one side of the reinforcement rod, a buckle groove opened inside the pipe body, an insertion piece inserted inside the pipe body, and buckle blocks fixed at both ends of the insertion piece.

[0023] Through the above technical solution, the distance between the heat dissipation fins is supported by the reinforcement rod, so that the heat dissipation fins are not easily bent by force. After the buckle block is deformed, it is snapped into the inside of the buckle groove to connect and fix the left and right groups of reinforcement rods, so that the left and right groups of aluminum heat dissipation plates are accurately aligned.

[0024] As a preferred technical solution of the present application, a clamping structure is formed between the buckle block and the buckle groove, and the reinforcement rods are evenly distributed inside the heat dissipation fins.

[0025] Through the above technical solution, after the buckle block is deformed, it is snapped into the inside of the buckle groove to connect and fix the left and right groups of reinforcement rods.

[0026] Compared with the prior art, the beneficial effects of the present utility model are:

[0027] In the solution of the present application:

[0028] By inserting the first guide tube into the inside of the guide groove, the left and right groups of extension blocks are aligned. The cover shell is sleeved on the outside of the extension blocks, and the pressing wheel is pushed to rotate to squeeze the two groups of extension blocks to approach each other, and the positions of the two groups of extension blocks are locked and fixed. Thus, the position fixing function of this heat sink is realized, which is convenient for restricting the positions of the two groups of aluminum heat dissipation plates, aligning the welds, and enabling the staff to not need to adjust the aluminum heat dissipation plates during the clamping process, improving the processing efficiency of the heat sink;

[0029] The distance between the heat dissipation fins is supported by the reinforcement rod, so that the heat dissipation fins are not easily bent by force. After the buckle block is deformed, it is snapped into the inside of the buckle groove to connect and fix the left and right groups of reinforcement rods, so that the left and right groups of aluminum heat dissipation plates are accurately aligned. Thus, the heat dissipation fin reinforcement function of this heat sink is realized, which is convenient for fixing the positions of the heat dissipation fins, making the positions of adjacent two groups of heat dissipation fins fixed and not easily deformed by force, ensuring the normal use of the heat sink. Description of the Drawings

[0030] Figure 1 It is one of the structural schematic diagrams of the present utility model;

[0031] Figure 2 It is the second structural schematic diagram of the present utility model;

[0032] Figure 3 It is the third structural schematic diagram of the present utility model;

[0033] Figure 4 Provided by the present applicationFigure 3 Schematic diagram of the enlarged partial cross-section at location A in [device name];

[0034] Figure 5 Three-dimensional cross-section structure diagram of the fixing structure provided by this application.

[0035] Labels in the figure: 1. Aluminum heat-conducting plate; 2. Fixing structure; 201. Housing; 202. Pressing wheel; 203. First guiding tube; 204. Guiding groove; 205. Second guiding tube; 3. Heat-conducting fins; 4. Fixing bolt; 5. Reinforcement structure; 501. Reinforcement rod; 502. Tube body; 503. Buckle block; 504. Insert piece; 505. Buckle groove; 6. Mounting bracket; 7. Mounting hole groove; 8. Weld seam; 9. Extension block; 10. Support rod. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0037] As Figures 1-5 shown, a heat sink using friction stir welding proposed in this implementation manner includes an aluminum heat-conducting plate 1, and further includes

[0038] Extension blocks 9 fixed on both sides of the aluminum heat-conducting plate 1, and a weld seam 8 is provided inside the aluminum heat-conducting plate 1;

[0039] A fixing structure 2 is arranged outside the extension blocks 9. Among them, the fixing structure 2 includes a housing 201 sleeved outside the extension blocks 9, a positioning component arranged on one side inside the housing 201, and a pressing wheel 202 rotatably connected to the inside of one side of the housing 201;

[0040] Heat-conducting fins 3 are fixed on the top of the aluminum heat-conducting plate 1,

[0041] Fixing bolts 4 are inserted into the inside of both sides of the aluminum heat-conducting plate 1;

[0042] A reinforcement structure 5 is arranged inside the heat-conducting fins 3 for supporting and fixing the position of the heat-conducting fins 3;

[0043] Support rods 10 are installed on both sides of the top of the aluminum heat-conducting plate 1, and mounting brackets 6 are fixed at the tops of the support rods 10. Mounting hole grooves 7 are provided inside the mounting brackets 6.

[0044] As Figure 1 、 Figure 2 and Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the positioning component includes a second guide tube 205 fixed to one side inside the housing 201, a guide groove 204 opened in a set of extension blocks 9, and a first guide tube 203 inserted into the guide groove 204 and connected to another set of extension blocks 9. The second guide tube 205 and the first guide tube 203 are located on the same horizontal center line. A sliding structure is formed between the second guide tube 205 and the guide groove 204, and a rotating structure is formed between the pressure wheel 202 and the housing 201. A groove is opened at the bottom end of the housing 201. By aligning the left and right sets of extension blocks 9, the first guide tube 203 is inserted into the guide groove 204. After aligning the left and right sets of extension blocks 9, the housing 201 is then sleeved outside the extension blocks 9. The housing 201 is pulled horizontally to insert the second guide tube 205 into the guide groove 204 to limit the placement position of the housing 201. Then, the pressure wheel 202 is pushed to rotate, so that the pressure wheel 202 squeezes the two sets of extension blocks 9 to move closer to each other, reducing the gap inside the weld 8, and locking and fixing the position between the two sets of extension blocks 9.

[0045] As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the reinforcement structure 5 includes a reinforcement rod 501 inserted into the heat dissipation fins 3, a tube body 502 fixed to one side of the reinforcement rod 501, a buckle groove 505 opened inside the tube body 502, an insertion piece 504 inserted into the tube body 502, and buckle blocks 503 fixed to both ends of the insertion piece 504. A clamping structure is formed between the buckle blocks 503 and the buckle groove 505. The reinforcement rods 501 are evenly distributed inside the heat dissipation fins 3. The multiple sets of heat dissipation fins 3 are connected by the reinforcement rods 501 to support the distance between the heat dissipation fins 3, so that the heat dissipation fins 3 are not easily bent under force. When the left and right aluminum heat dissipation plates 1 are aligned, the insertion piece 504 is inserted into the tube body 502, and the buckle blocks 503 are deformed and then clamped into the buckle groove 505 to connect and fix the left and right reinforcement rods 501, and at the same time fix the position between the left and right aluminum heat dissipation plates 1 to accurately align the left and right aluminum heat dissipation plates 1.

[0046] Specifically, when the heat sink using friction stir welding is in use: the two sets of extension blocks 9 are aligned by using the fixing structure 2 to fix the position between the two sets of aluminum heat dissipation plates 1. Then, the heat sink is inverted so that the friction stir welding head contacts the extension blocks 9 to weld the weld 8. After welding, the welding keyhole is located inside the extension blocks 9, and the extension blocks 9 can be cut to remove the influence of the keyhole defect on the heat sink. The position between the heat dissipation fins 3 is reinforced by the reinforcement structure 5, and the mounting bracket 6 can be used to mount the fan.

[0047] By aligning the left and right sets of extension blocks 9, inserting the first guide tube 203 into the inside of the guide groove 204, aligning the left and right sets of extension blocks 9, then immediately slipping the housing 201 over the outside of the extension blocks 9, pulling the housing 201 horizontally to insert the second guide tube 205 into the inside of the guide groove 204 to limit the placement position of the housing 201, then immediately pushing the pressure wheel 202 to rotate, causing the pressure wheel 202 to squeeze the two sets of extension blocks 9 towards each other, reducing the gap inside the weld 8, and locking and fixing the position between the two sets of extension blocks 9;

[0048] Connecting multiple sets of heat dissipation fins 3 through the reinforcement rods 501 to support the distance between the heat dissipation fins 3, making the heat dissipation fins 3 not easily bend under force. When the left and right aluminum heat dissipation plates 1 are aligned, insert the insertion piece 504 into the inside of the tube body 502, causing the buckle 503 to deform and snap into the inside of the buckle groove 505 to connect and fix the left and right sets of reinforcement rods 501, and at the same time fix the position between the left and right aluminum heat dissipation plates 1 to accurately align the left and right aluminum heat dissipation plates 1.

[0049] The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered within the scope of the claims of the present invention.

Claims

1. A heat sink for friction stir welding, comprising an aluminum heat conducting plate (1), characterized in that: Also includes, Extension blocks (9) are fixed on both sides of the aluminum heat conducting plate (1), and a welding seam (8) is provided inside the aluminum heat conducting plate (1); A fixed structure (2) is arranged on the outside of the extension block (9), wherein the fixed structure (2) comprises a cover shell (201) sleeved on the outside of the extension block (9), a positioning component arranged on one side of the inside of the cover shell (201), and a pressure wheel (202) rotatably connected to the inside of one side of the cover shell (201); A heat conducting fin (3) is fixed on the top of the aluminum heat conducting plate (1); Fixing bolts (4) are inserted into the interior of both sides of the aluminum heat conducting plate (1); A reinforcement structure (5) is arranged inside the heat-conducting fin (3) and is used to support and fix the position of the heat-conducting fin (3); The support rod (10) is mounted on both sides of the top end of the aluminum heat conducting plate (1), and a mounting frame (6) is fixed to the top end of the support rod (10), and a mounting hole groove (7) is provided inside the mounting frame (6).

2. A heat sink for friction stir welding according to claim 1, characterized in that: The positioning assembly comprises a second guide tube (205) fixed to one side of the interior of the housing (201), a guide groove (204) provided inside a group of extension blocks (9), and a first guide tube (203) inserted into the guide groove (204) and connected to another group of extension blocks (9).

3. A heat sink for friction stir welding according to claim 2, characterized in that: The second guide tube (205) and the first guide tube (203) are located on the same horizontal center line, and a sliding structure is formed between the second guide tube (205) and the guide groove (204).

4. The heat sink for friction stir welding according to claim 2, characterized in that: A rotating structure is formed between the pressing wheel (202) and the cover shell (201), and a groove is provided at the bottom end of the cover shell (201).

5. The heat sink for friction stir welding according to claim 1, characterized in that: The reinforcement structure (5) comprises a reinforcement rod (501) inserted into the heat-conducting fin (3), a tube body (502) fixed to one side of the reinforcement rod (501), a buckle groove (505) provided in the tube body (502), an insert sheet (504) inserted into the tube body (502), and buckle blocks (503) fixed to both ends of the insert sheet (504).

6. The heat sink for friction stir welding according to claim 5, characterized in that: A snap-fit ​​structure is formed between the buckle block (503) and the buckle groove (505), and the reinforcement rods (501) are distributed at equal intervals inside the heat-conducting fins (3).

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