A device and method for manufacturing large-area diamond heat sink

Abstract

The present invention discloses an apparatus and method for manufacturing large-area diamond heat sinks, comprising a supporting base, a movable slide box being slidably connected to the top of the supporting base, and a rotating support plate being rotatably connected to the top of the movable slide plate. The beneficial effects of the present invention are as follows: by arranging a No. 2 cylinder, a rack, a gear and a rotating rod, the output end of the No. 2 cylinder drives the rack to move, the rack drives the rotating rod to rotate through the meshing gear, the rotating support plate and the forming die base are driven to rotate through the rotating rod, the two forming die bases are interchanged in position, and the loading work of the cold pressing forming is completed; by arranging a No. 4 cylinder and a cleaning brush, the output end of the No. 4 cylinder drives the cleaning brush to move, the cleaning brush is used to clean impurities on the bottom of the cold pressing plate, and the stability of the next cold pressing forming is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of diamond heat sink manufacturing, in particular to a device and a method for manufacturing a large-area diamond heat sink. Background Art

[0002] A diamond heat sink is a heat dissipation element made from the high thermal conductivity of diamond. Diamond is one of the materials with the highest thermal conductivity in nature, far exceeding that of traditional metal heat dissipation materials such as copper and aluminum. For example, the room temperature thermal conductivity of natural single-crystal diamond can reach 22W / (cm·K), while the thermal conductivity of metallic copper is approximately 4W / (cm·K). Diamond also has excellent physical properties: diamond not only has high thermal conductivity, but also has a low coefficient of thermal expansion, high hardness, high wear resistance, good chemical stability, and radiation resistance. Large-area diamond heat sinks are large-scale heat dissipation elements made from diamond material, featuring extremely high thermal conductivity and excellent heat dissipation performance. The design of large-area diamond heat sinks enables them to cover a larger heat dissipation area, thereby more effectively dissipating the heat generated by the equipment. This is particularly important in the heat dissipation of high-power density devices. In high-tech fields such as electronics, communications, new energy vehicles and aerospace, as the power density of equipment continues to increase, the requirements for heat dissipation materials are becoming increasingly stringent. Large-area diamond heat sinks have become ideal heat dissipation components in these fields due to their excellent thermal conductivity and physical properties. However, the manufacturing process of large-area diamond heat sinks is complex and requires high-precision equipment and processes to ensure product quality and performance. Diamond materials are extremely hard and difficult to shape through conventional processing methods. Traditional manufacturing methods often rely on manual operations or simple mechanical equipment, with low production efficiency and difficulty in meeting the needs of large-scale production. Traditional manufacturing methods have a low degree of automation and require a lot of manual intervention, which not only increases production costs, but also reduces production efficiency and product consistency. Summary of the Invention

[0003] The purpose of the present invention is to provide an apparatus and method for manufacturing large-area diamond heat sinks, so as to solve the problem that the traditional manufacturing methods proposed in the above background technology often rely on manual operation or simple mechanical equipment, have low production efficiency, and are difficult to meet the needs of large-scale production. The traditional manufacturing methods have a low degree of automation and require a lot of manual intervention, which not only increases production costs, but also reduces production efficiency and product consistency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an equipment for manufacturing large-area diamond heat sinks, comprising a support base, the top of the support base is slidably connected to a movable slide box, the top of the movable slide box is rotatably connected to a rotating support plate, the top of the rotating support plate is symmetrically fixedly connected to a forming mold base, a No. 1 support frame is provided on the outside of the support base, a No. 1 cylinder is installed on the top of the No. 1 support frame, the output end of the No. 1 cylinder is fixedly connected to a cold pressing plate that cooperates with the forming mold base, the interior of the movable slide box is fixedly connected to an inner fixed box, the interior of the inner fixed box is provided with a rotating assembly, the rotating assembly is connected to the rotating support plate, a loading and unloading robot is installed on the top of the support base, one side of the support base is fixedly connected to a fixed side seat, the top of the fixed side seat is slidably connected to the sintering mold, the A No. 2 linear module is installed inside the fixed side seat, and the movable slide of the No. 2 linear module is connected to the sintering mold, and an internal heating plate is provided on the inner side of the sintering mold, and a No. 2 support frame is provided on the outer side of the fixed side seat, and a No. 5 cylinder is installed on the top of the No. 2 support frame, and the output end of the No. 5 cylinder is fixedly connected to the bottom fixing plate, and the bottom of the bottom fixing plate is fixedly connected to the sintering cover plate that cooperates with the sintering mold, and a plurality of air inlet pipes are installed inside the sintering cover plate and the bottom fixing plate, and an exhaust pipe is installed inside the sintering cover plate and the bottom fixing plate, and solenoid valves are installed on the air inlet pipe and the exhaust pipe, and a fixed bracket is provided on one side of the support base, and a ball mill is installed on the top of the fixed bracket, and a spiral discharge pipe is provided at one end of the ball mill, and the bottom of the spiral discharge pipe is fixedly connected to a discharge port that cooperates with the forming mold base.

[0005] As a preferred solution of the present invention: the rotating assembly includes a rotating rod, which is rotatably connected to the inside of the inner fixed box, the top of the rotating rod is fixedly connected to the rotating support plate, the rotating rod is rotatably connected to the movable sliding box, the outer side of the rotating rod is fixedly connected to a gear, the inside of the inner fixed box is slidably connected to a rack that cooperates with the gear, the rack is meshed with the gear, and a No. 2 cylinder is installed on one side of the inner fixed box, and the output end of the No. 2 cylinder is fixedly connected to the rack.

[0006] As a preferred solution of the present invention: the interior of the rotating support disc is slidably connected to an inner sliding plate, the top of the inner sliding plate is symmetrically fixedly connected to a plurality of ejectors that cooperate with the exhaust pipe, the ejectors are slidably connected to the rotating support disc, the ejectors are slidably connected to the exhaust pipe, and the interior of the rotating support disc is symmetrically installed with a No. 3 cylinder, and the output end of the No. 3 cylinder is fixedly connected to the inner sliding plate.

[0007] As a preferred solution of the present invention: one side of the No. 1 support frame is fixedly connected to a fixed side frame, one side of the fixed side frame is installed with a No. 4 cylinder, and the output end of the No. 4 cylinder is fixedly connected to a cleaning brush that cooperates with the cold press plate.

[0008] As a preferred solution of the present invention: one side of the cleaning brush is symmetrically fixedly connected to a limiting slide bar, and the limiting slide bar is slidably connected to the fixed side frame.

[0009] As a preferred solution of the present invention: a feed box is fixedly connected to the top of the fixed bracket, a spiral feed pipe is fixedly connected to one end of the ball mill away from the spiral discharge pipe, and the feed box is connected to the spiral feed pipe.

[0010] As a preferred solution of the present invention: the fixed side seat is symmetrically and slidingly connected to a bottom fixed slider inside, the top of the bottom fixed slider is fixedly connected to the sintering mold, the bottom fixed slider is internally and slidingly connected to a No. 1 limiting slide rod, and the No. 1 limiting slide rod is fixedly connected to the fixed side seat.

[0011] As a preferred solution of the present invention: a linear module No. 1 is installed inside the support base, and the movable slide of the linear module No. 1 is connected to the movable slide box.

[0012] As a preferred solution of the present invention: a No. 2 limiting slide bar is symmetrically fixedly connected to the top of the bottom fixed plate, and the No. 2 limiting slide bar is slidably connected to the No. 2 support frame.

[0013] A method for manufacturing a large-area diamond heat sink comprises the following steps:

[0014] S1. Diamond particles and metallic copper particles are stored in the feed box. Diamond particles and metallic copper particles are input into the ball mill through the spiral feed pipe. The ball mill grinds and mixes the particles. The ground powder is then discharged through the discharge port at the bottom of the spiral discharge pipe. The powder enters one of the forming die seats below. After a suitable amount of powder is poured in, the spiral discharge pipe is closed. The output end of the No. 2 cylinder drives the rack to move. When the rack moves, the meshing gear rotates. When the gear rotates, the rotating support plate and the forming die seat are driven by the inner rotating rod. The two forming die seats are interchanged. The forming die seat filled with powder is rotated to the bottom of the cold pressing plate. Then, the other forming die seat is fed with powder through the discharge port.

[0015] S2. The cold pressing plate is driven downward by the output end of the No. 1 cylinder, and cold pressing is performed through the cooperation between the cold pressing plate and the forming die base, so that the large-area diamond heat sink is cold-pressed and formed. After cold pressing, the output end of the No. 1 cylinder drives the cold pressing plate upward, and the output end of the No. 4 cylinder drives the cleaning brush to move, and the residual impurities at the bottom of the cold pressing plate are cleaned by the cleaning brush, thereby improving the stability of the next cold pressing. The output end of the No. 1 linear module drives the moving slide box, the rotating support plate and the forming die base to move, and the large-area diamond heat sink formed by cold pressing in the forming die base is transferred by the loading and unloading manipulator, and then the moving slide of the No. 1 linear module drives the moving slide box, the rotating support plate and the forming die base to reset and move, and then the next cold pressing work is carried out;

[0016] S3. The cold-pressed large-area diamond heat sink is transferred to the sintering mold by the loading and unloading manipulator and placed. The bottom fixing plate and the sintering cover plate are driven downward by the output end of the No. 5 cylinder. The sintering cover plate seals the sintering mold. The large-area diamond heat sink is heated by the internal heating plate in the sintering mold. At the same time, protective gas is introduced through the air inlet pipe and the exhaust pipe extracts the exhaust gas. The formed green body is sintered at a high temperature to melt the metal powder and penetrate into the gaps between the diamond powder to form a dense composite material. After sintering is completed, the output end of the No. 5 cylinder drives the bottom fixing plate and the sintering cover plate to move upward. The movable slide of the No. 2 linear module drives the sintering mold to move, and the sintered diamond heat sink is moved to facilitate unloading.

[0017] S4. After cutting, the sintered diamond heat sink is processed by laser cutting and mechanical grinding to remove excess material, and to adjust the shape and size. The surface of the heat sink is polished to improve its smoothness and thermal conductivity. The surface of the diamond heat sink is copper-plated or nickel-plated as needed to improve its thermal conductivity, corrosion resistance or welding performance. The plating method is physical vapor deposition.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up a No. 2 cylinder, a rack, a gear and a rotating rod, the output end of the No. 2 cylinder drives the rack to move, the rack drives the rotating rod to rotate through the meshing gear, and the rotating support plate and the forming die base are driven to rotate through the rotating rod, and the two forming die bases are interchanged to complete the loading work of cold pressing; by setting up a No. 4 cylinder and a cleaning brush, the output end of the No. 4 cylinder drives the cleaning brush to move, and the impurities at the bottom of the cold pressing plate are cleaned by the cleaning brush, thereby improving the stability of the next cold pressing; by setting up a sintering mold, an internal heating plate, a sintering cover plate and an air intake pipe, the large-area diamond heat sink is heated by the internal heating plate in the sintering mold, and at the same time, protective gas is introduced through the air intake pipe, and exhaust gas is extracted through the exhaust pipe, and the formed green body is sintered at high temperature to melt the metal powder and penetrate into the gaps in the diamond powder to form a dense composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a rear view of the present invention;

[0021] Figure 3 This is a bottom view of the sintered cover plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the overall structure of the support base and the movable sliding box of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the support base of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal structure of the internal fixing box of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the rotating support plate of the present invention;

[0026] Figure 8 It is a left view of the present invention.

[0027] Figure: 1. Support base; 2. Moving slide box; 3. Rotating support plate; 4. Fixed bracket; 5. Ball mill; 6. Support frame No. 1; 7. Cylinder No. 1; 8. Spiral discharge pipe; 9. Discharge port; 10. Spiral feed pipe; 11. Feed box; 12. Loading and unloading manipulator; 13. Internal fixed box; 14. Linear module No. 1; 15. Rotating rod; 16. Gear; 17. Rack; 18. Cylinder No. 2; 19. Internal sliding plate; 20. Cylinder No. 3; 21. Top Needle; 22. Fixed side frame; 23. No. 4 cylinder; 24. Limit slide; 25. Cleaning brush; 26. Cold press plate; 27. Fixed side seat; 28. Sintering mold; 29. ​​Internal heating plate; 30. No. 2 linear module; 31. Bottom fixed slider; 32. No. 1 limit slide; 33. No. 2 support frame; 34. No. 5 cylinder; 35. Bottom fixed plate; 36. No. 2 limit slide; 37. Sintering cover plate; 38. Air inlet pipe; 39. Exhaust pipe; 40. Forming mold base. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1 to 8The present invention provides a technical solution: an equipment for manufacturing large-area diamond heat sinks, comprising a support base 1, a movable slide box 2 is slidably connected to the top of the movable slide box 2, a rotating support plate 3 is rotatably connected to the top of the rotating support plate 3, and a forming mold base 40 is symmetrically fixedly connected to the top of the rotating support plate 3. A No. 1 support frame 6 is provided on the outside of the support base 1, and a No. 1 cylinder 7 is installed on the top of the No. 1 support frame 6. The output end of the No. 1 cylinder 7 is fixedly connected to a cold pressing plate 26 that cooperates with the forming mold base 40. The interior of the movable slide box 2 is fixedly connected to an inner fixed box 13, and a rotating assembly is provided inside the inner fixed box 13. The rotating assembly is connected to the rotating support plate 3, and a loading and unloading manipulator 12 is installed on the top of the support base 1. A fixed side seat 27 is fixedly connected to one side of the support base 1, and a sintering mold 28 is slidably connected to the top of the fixed side seat 27. A No. 2 linear module 30 is installed inside the fixed side seat 27, and the movable slide of the No. 2 linear module 30 is connected to the sintering mold 28 The inner side of the sintering mold 28 is provided with an inner heating plate 29, the outer side of the fixed side seat 27 is provided with a second support frame 33, the top of the second support frame 33 is installed with a fifth cylinder 34, the output end of the fifth cylinder 34 is fixedly connected to a bottom fixing plate 35, the bottom of the bottom fixing plate 35 is fixedly connected to a sintering cover plate 37 that matches the sintering mold 28, the interior of the sintering cover plate 37 and the bottom fixing plate 35 are provided with a plurality of air inlet pipes 38, the interior of the sintering cover plate 37 and the bottom fixing plate 35 are provided with a pump Solenoid valves are installed on the air pipe 39, the air inlet pipe 38 and the exhaust pipe 39. A fixed bracket 4 is provided on one side of the support base 1. A ball mill 5 is installed on the top of the fixed bracket 4. A spiral discharge pipe 8 is provided at one end of the ball mill 5. The bottom of the spiral discharge pipe 8 is fixedly connected to a discharge port 9 that cooperates with the forming die base 40. The raw materials are crushed by the ball mill 5. The ball mill impacts and grinds the material through the grinding medium in its cylinder to crush the material into the required particle size.

[0030] Among them, the rotating assembly includes a rotating rod 15, which is rotatably connected to the inside of the inner fixed box 13, the top of the rotating rod 15 is fixedly connected to the rotating support plate 3, the rotating rod 15 is rotatably connected to the movable slide box 2, the outer side of the rotating rod 15 is fixedly connected with a gear 16, the inside of the inner fixed box 13 is slidably connected with a rack 17 that cooperates with the gear 16, the rack 17 is meshed with the gear 16, and a No. 2 cylinder 18 is installed on one side of the inner fixed box 13, the output end of the No. 2 cylinder 18 is fixedly connected to the rack 17, and the rack 17 is driven to move by the output end of the No. 2 cylinder 18. When the rack 17 moves, it drives the meshing gear 16 to rotate, and when the gear 16 rotates, it drives the inner rotating rod 15 to rotate, and the position of the rotating support plate 3 and the forming mold base 40 is rotationally adjusted.

[0031] Among them, the inner sliding plate 19 is symmetrically and fixedly connected to the top of the inner sliding plate 19 with multiple ejectors 21 that cooperate with the exhaust pipe 39. The ejectors 21 are slidably connected to the rotating support plate 3, and the ejectors 21 are slidably connected to the exhaust pipe 39. The No. 3 cylinder 20 is symmetrically installed inside the rotating support plate 3. The output end of the No. 3 cylinder 20 is fixedly connected to the inner sliding plate 19. The inner sliding plate 19 is driven to move upward by the output end of the No. 3 cylinder 20, and the inner sliding plate 19 drives the ejectors 21 to move upward. The diamond heat sink cold-pressed in the forming die base 40 is ejected by the ejectors 21, which is convenient for material removal.

[0032] Among them, one side of the No. 1 support frame 6 is fixedly connected to the fixed side frame 22, and the No. 4 cylinder 23 is installed on one side of the fixed side frame 22. The output end of the No. 4 cylinder 23 is fixedly connected to the cleaning brush 25 that cooperates with the cold pressing plate 26. The cleaning brush 25 is driven to move by the output end of the No. 4 cylinder 23, and the bottom of the cold pressing plate 26 is cleaned by the cleaning brush 25, thereby improving the stability of cold pressing.

[0033] Among them, one side of the cleaning brush 25 is symmetrically fixedly connected to the limiting slide bar 24, the limiting slide bar 24 is slidingly connected to the fixed side frame 22, and the output end of the No. 4 cylinder 23 drives the cleaning brush 25 to move. When the cleaning brush 25 moves, it drives the limiting slide bar 24 and the fixed side frame 22 to slide in a limited manner, thereby improving the stability of the adjustment of the cleaning brush 25.

[0034] Among them, the top of the fixed bracket 4 is fixedly connected to a feed box 11, and the end of the ball mill 5 away from the spiral discharge pipe 8 is fixedly connected to a spiral feed pipe 10. The feed box 11 is connected to the spiral feed pipe 10, and the granular material in the feed box 11 is fed into the ball mill 5 through the spiral feed pipe 10 and enters the ball mill 5 for grinding.

[0035] Among them, the fixed side seat 27 is symmetrically and slidably connected to the bottom fixed slider 31 inside, the top of the bottom fixed slider 31 is fixedly connected to the sintering mold 28, and the bottom fixed slider 31 is slidably connected to the No. 1 limiting slide bar 32 inside. The No. 1 limiting slide bar 32 is fixedly connected to the fixed side seat 27. When the sintering mold 28 moves, it drives the bottom fixed slider 31 to move. The bottom fixed slider 31 slides within a limited area on the outside of the No. 1 limiting slide bar 32, thereby improving the movement stability of the sintering mold 28.

[0036] Among them, a linear module No. 1 is installed inside the support base 1, and the movable slide of the linear module No. 14 is connected to the movable slide box 2. The movable slide of the linear module No. 1 14 drives the movable slide box 2, the rotating support plate 3 and the forming mold base 40 to move the overall position, which facilitates the loading and unloading of the cold-pressed forming material in the forming mold base 40.

[0037] Among them, the top of the bottom fixed plate 35 is symmetrically fixedly connected with a No. 2 limiting slide bar 36, and the No. 2 limiting slide bar 36 is slidingly connected to the No. 2 support frame 33. The output end of the No. 5 cylinder 34 drives the bottom fixed plate 35 to move, and the bottom fixed plate 35 drives the No. 2 limiting slide bar 36 to slide in the No. 2 support frame 33 to improve the stability of the sintering cover plate 37.

[0038] A method for manufacturing a large-area diamond heat sink comprises the following steps:

[0039] S1, diamond particles and metallic copper particles are stored in the feed box 11, and diamond particles and metallic copper particles are input into the ball mill 5 through the spiral feed pipe 10. The ball mill 5 grinds and mixes the particles, and then the ground powder is discharged through the discharge port 9 at the bottom of the spiral discharge pipe 8. The powder enters one of the forming die holders 40 below. After the appropriate amount of powder is poured in, the spiral discharge pipe 8 is closed, and the rack 17 is driven to move by the output end of the No. 2 cylinder 18. When the rack 17 moves, the meshing gear 16 rotates. When the gear 16 rotates, the rotating support plate 3 and the forming die holder 40 are driven to rotate through the inner rotating rod 15. The two forming die holders 40 are interchanged, and the forming die holder 40 filled with powder is rotated to the bottom of the cold press plate 26. Then, the other forming die holder 40 is fed with powder through the discharge port 9.

[0040] S2, the output end of the No. 1 cylinder 7 drives the cold pressing plate 26 to move downward, and the cold pressing plate 26 and the forming die base 40 are matched to perform cold pressing treatment, so that the large-area diamond heat sink is cold-pressed and formed. After cold pressing, the output end of the No. 1 cylinder 7 drives the cold pressing plate 26 to move upward, and the output end of the No. 4 cylinder 23 drives the cleaning brush 25 to move, and the residual impurities at the bottom of the cold pressing plate 26 are cleaned by the cleaning brush 25, thereby improving the stability of the next cold pressing. The output end of the No. 1 linear module 14 drives the movable slide 2, the rotating support plate 3 and the forming die base 40 to move, and the large-area diamond heat sink cold-pressed in the forming die base 40 is transferred by the loading and unloading manipulator 12, and then the movable slide of the No. 1 linear module 14 drives the movable slide 2, the rotating support plate 3 and the forming die base 40 to reset and move, and the next cold pressing work is carried out;

[0041] S3. The cold-pressed large-area diamond heat sink is transferred to the sintering mold 28 by the loading and unloading manipulator 12 and placed therein. The bottom fixing plate 35 and the sintering cover plate 37 are driven downward by the output end of the No. 5 cylinder 34. The sintering cover plate 37 seals the sintering mold 28. The large-area diamond heat sink is heated by the internal heating plate 29 in the sintering mold 28. At the same time, protective gas is introduced through the air inlet pipe 38 and the exhaust pipe 39 extracts the exhaust gas. The formed green body is sintered at a high temperature to melt the metal powder and penetrate into the gaps in the diamond powder to form a dense composite material. After sintering is completed, the output end of the No. 5 cylinder 34 drives the bottom fixing plate 35 and the sintering cover plate 37 to move upward, and the movable slide of the No. 2 linear module 30 drives the sintering mold 28 to move, and the sintered diamond heat sink is moved to facilitate unloading.

[0042] S4. After cutting, the sintered diamond heat sink is processed by laser cutting and mechanical grinding to remove excess material, and to adjust the shape and size. The surface of the heat sink is polished to improve its smoothness and thermal conductivity. The surface of the diamond heat sink is copper-plated or nickel-plated as needed to improve its thermal conductivity, corrosion resistance or welding performance. The plating method is physical vapor deposition.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for manufacturing a large-area diamond heat sink, comprising a support base (1), characterized in that: The top of the support base (1) is slidably connected to a movable slide box (2), the top of the movable slide box (2) is rotatably connected to a rotating support plate (3), the top of the rotating support plate (3) is symmetrically fixedly connected to a forming die base (40), a No. 1 support frame (6) is provided on the outside of the support base (1), a No. 1 cylinder (7) is installed on the top of the No. 1 support frame (6), the output end of the No. 1 cylinder (7) is fixedly connected to a cold press plate (26) that cooperates with the forming die base (40), the inner portion of the movable slide box (2) is fixedly connected to the forming die base (40), and the inner portion of the movable slide box (2) is fixedly connected to the forming die base (40). The inner fixed box (13) is fixedly connected to the upper part of the support base (1), and a rotating assembly is provided inside the inner fixed box (13), and the rotating assembly is connected to the rotating support plate (3). A loading and unloading manipulator (12) is installed on the top of the support base (1), and a fixed side seat (27) is fixedly connected to one side of the support base (1), and a sintering mold (28) is slidably connected to the top of the fixed side seat (27). A second linear module (30) is installed inside the fixed side seat (27), and the movable slide of the second linear module (30) is connected to the The sintering mold (28) is connected, the inner side of the sintering mold (28) is provided with an inner heating plate (29), the outer side of the fixed side seat (27) is provided with a No. 2 support frame (33), the top of the No. 2 support frame (33) is installed with a No. 5 cylinder (34), the output end of the No. 5 cylinder (34) is fixedly connected to a bottom fixing plate (35), the bottom of the bottom fixing plate (35) is fixedly connected to a sintering cover plate (37) matched with the sintering mold (28), the internal arrangement of the sintering cover plate (37) and the bottom fixing plate (35) is as follows: A plurality of air inlet pipes (38) are installed, and an air extraction pipe (39) is installed inside the sintering cover plate (37) and the bottom fixed plate (35). Solenoid valves are installed on the air inlet pipe (38) and the air extraction pipe (39). A fixed bracket (4) is provided on one side of the support base (1), and a ball mill (5) is installed on the top of the fixed bracket (4). A spiral discharge pipe (8) is provided at one end of the ball mill (5), and the bottom of the spiral discharge pipe (8) is fixedly connected to a discharge port (9) that cooperates with the forming die base (40).

2. The device for manufacturing large-area diamond heat sinks according to claim 1, characterized in that: The rotating assembly includes a rotating rod (15), the rotating rod (15) is rotatably connected to the inside of the inner fixed box (13), the top end of the rotating rod (15) is fixedly connected to the rotating support plate (3), the rotating rod (15) is rotatably connected to the movable sliding box (2), the outer side of the rotating rod (15) is fixedly connected to a gear (16), the inside of the inner fixed box (13) is slidably connected to a rack (17) matched with the gear (16), the rack (17) is meshed with the gear (16), and a No. 2 cylinder (18) is installed on one side of the inner fixed box (13), and the output end of the No. 2 cylinder (18) is fixedly connected to the rack (17).

3. The device for manufacturing large-area diamond heat sinks according to claim 2, characterized in that: The interior of the rotating support disc (3) is slidably connected to an inner sliding plate (19), and the top of the inner sliding plate (19) is symmetrically fixedly connected to a plurality of ejectors (21) that cooperate with the exhaust pipe (39), and the ejectors (21) are slidably connected to the rotating support disc (3), and the ejectors (21) are slidably connected to the exhaust pipe (39), and a No. 3 cylinder (20) is symmetrically installed inside the rotating support disc (3), and the output end of the No. 3 cylinder (20) is fixedly connected to the inner sliding plate (19).

4. The device for manufacturing large-area diamond heat sinks according to claim 3, characterized in that: One side of the No. 1 support frame (6) is fixedly connected to a fixed side frame (22), one side of the fixed side frame (22) is installed with a No. 4 cylinder (23), and the output end of the No. 4 cylinder (23) is fixedly connected to a cleaning brush (25) that cooperates with the cold press plate (26).

5. The device for manufacturing large-area diamond heat sinks according to claim 4, characterized in that: One side of the cleaning brush (25) is symmetrically fixedly connected to a limiting slide bar (24), and the limiting slide bar (24) is slidably connected to the fixed side frame (22).

6. The device for manufacturing large-area diamond heat sinks according to claim 5, characterized in that: A feed box (11) is fixedly connected to the top of the fixed bracket (4), a spiral feed pipe (10) is fixedly connected to one end of the ball mill (5) away from the spiral discharge pipe (8), and the feed box (11) is connected to the spiral feed pipe (10).

7. The device for manufacturing large-area diamond heat sinks according to claim 6, characterized in that: The fixed side seat (27) is symmetrically and slidably connected to a bottom fixed slider (31) inside, the top of the bottom fixed slider (31) is fixedly connected to the sintering mold (28), and the bottom fixed slider (31) is slidably connected to a first limiting slide bar (32) inside, and the first limiting slide bar (32) is fixedly connected to the fixed side seat (27).

8. The device for manufacturing large-area diamond heat sinks according to claim 7, characterized in that: A linear module (14) is installed inside the support base (1), and a movable slide of the linear module (14) is connected to the movable slide box (2).

9. The device for manufacturing large-area diamond heat sinks according to claim 8, characterized in that: A second limiting slide bar (36) is symmetrically fixedly connected to the top of the bottom fixing plate (35), and the second limiting slide bar (36) is slidably connected to the second support frame (33).

10. A method for manufacturing a large-area diamond heat sink, characterized in that: The following steps are involved: S1, diamond particles and metal copper particles are stored in the feed box (11), and the diamond particles and metal copper particles are fed into the ball mill (5) through the spiral feed pipe (10), and the ball mill (5) grinds and mixes them. Then, the ground powder is discharged through the discharge port (9) at the bottom of the spiral discharge pipe (8), and the powder enters one of the forming molds (40) below. After the appropriate amount of powder is poured in, the spiral discharge pipe (8) is closed and the second cylinder (1 The output end of the gear (8) drives the rack (17) to move, and when the rack (17) moves, the meshing gear (16) is driven to rotate. When the gear (16) rotates, the rotating support plate (3) and the forming die base (40) are driven to rotate through the inner rotating rod (15). The two forming die bases (40) are interchanged, and the forming die base (40) filled with powder is rotated to the bottom of the cold pressing plate (26). Then, the other forming die base (40) is fed with powder through the discharge port (9); S2, the output end of the No. 1 cylinder (7) drives the cold pressing plate (26) to move downward, and the cold pressing treatment is performed by the cooperation between the cold pressing plate (26) and the forming die base (40), and the large-area diamond heat sink is cold-pressed and formed. After the cold pressing, the output end of the No. 1 cylinder (7) drives the cold pressing plate (26) to move upward, and the output end of the No. 4 cylinder (23) drives the cleaning brush (25) to move, and the residual impurities at the bottom of the cold pressing plate (26) are cleaned by the cleaning brush (25), thereby improving the stability of the next cold pressing forming. The output end of the No. 1 linear module (14) drives the movable slide box (2), the rotating support plate (3) and the forming die base (40) to move, and the large-area diamond heat sink formed by cold pressing in the forming die base (40) is transferred by the loading and unloading manipulator (12), and then the movable slide of the No. 1 linear module (14) drives the movable slide box (2), the rotating support plate (3) and the forming die base (40) to reset and move, and the next cold pressing forming work is performed; S3, the large-area diamond heat sink formed by cold pressing is transferred to the sintering mold (28) by the loading and unloading manipulator (12), and the bottom fixing plate (35) and the sintering cover plate (37) are driven downward by the output end of the No. 5 cylinder (34), and the sintering cover plate (37) is used to seal the sintering mold (28). The large-area diamond heat sink is heated by the internal heating plate (29) in the sintering mold (28). At the same time, protective gas is introduced through the air inlet pipe (38), and the exhaust pipe (39) is used to extract the exhaust gas. The green body after forming is sintered at a high temperature, so that the metal powder melts and penetrates into the gaps of the diamond powder to form a dense composite material. After sintering is completed, the output end of the No. 5 cylinder (34) drives the bottom fixing plate (35) and the sintering cover plate (37) to move upward, and the movable slide of the No. 2 linear module (30) drives the sintering mold (28) to move, and the sintered diamond heat sink is moved to facilitate unloading; S4. After cutting, the sintered diamond heat sink is processed by laser cutting and mechanical grinding to remove excess material, and to adjust the shape and size. The surface of the heat sink is polished to improve its smoothness and thermal conductivity. The surface of the diamond heat sink is copper-plated or nickel-plated as needed to improve its thermal conductivity, corrosion resistance or welding performance. The copper and nickel plating methods are physical vapor deposition.

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