Positioning jig for grinding heat dissipation cover

Abstract

The utility model belongs to the field of workpiece polishing, and particularly relates to a positioning jig for polishing a heat dissipation cover. A first supporting frame is fixedly connected to the top end of the workbench. The top end of the first supporting frame is fixedly connected with an air cylinder. The output end of the cylinder is fixedly connected with a first rotating shaft; a second supporting frame is fixedly connected to the side wall of the first supporting frame; the bottom end of the second supporting frame is fixedly connected with a grinding piece. The top end of the workbench is rotationally connected with a containing table. A plurality of groups of round holes are formed in the top end of the placing table; the bottom end of the workbench is fixedly connected with a motor; the output end of the motor is fixedly connected with a friction wheel; the heat dissipation cover is pressed downwards from the top through the first rotating shaft to be positioned, an up-down clamping structure is formed in cooperation with supporting of the bottom of the containing table, shaking of the heat dissipation cover during grinding is reduced, the first rotating shaft moves upwards to release positioning, the heat dissipation cover can be rapidly adjusted, and the complexity that after one face of the heat dissipation cover is ground, the heat dissipation cover needs to be detached from the middle of the positioning device again and is positioned again is reduced.

Description

Technical Field

[0001] This utility model relates to the field of workpiece grinding, specifically a positioning fixture for grinding a heat sink cover. Background Technology

[0002] A heat sink is a functional component used to assist in the heat dissipation of equipment. It is mostly made of materials with good thermal conductivity, such as aluminum alloy and copper. Through structures such as heat dissipation fins and grooves, it increases the contact area with air. It is widely used in computer graphics cards and automotive engine control modules. It can conduct internal heat to the outside, reduce the performance degradation or failure of equipment due to overheating, and is an important component to ensure the stable operation of electronic and mechanical products.

[0003] The positioning fixture for heat sink cover grinding is a tooling equipment used in mechanical manufacturing to assist in the grinding process of heat sink covers. It accurately fixes the heat sink cover in the grinding station, reduces workpiece displacement and shaking during grinding, and ensures the accuracy and stability of grinding operations such as deburring and surface treatment. It is a key tool to ensure the grinding quality and production efficiency of heat sink covers.

[0004] When grinding a heat sink cover, it is often necessary to adjust the grinding surface. After grinding one side of the heat sink cover, it is necessary to remove the heat sink cover from the positioning device, replace the other side, and then position and fix it, resulting in low grinding efficiency. Therefore, a positioning fixture for grinding heat sink covers is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A positioning fixture for grinding a heat sink cover, comprising a worktable; a first support frame fixedly connected to the top of the worktable; a cylinder fixedly connected to the top of the first support frame; a first rotating shaft fixedly connected to the output end of the cylinder; a second support frame fixedly connected to the side wall of the first support frame; a grinding disc fixedly connected to the bottom end of the second support frame; a placement platform rotatably connected to the top of the worktable; multiple sets of circular holes opened on the top of the placement platform; the circular holes are arranged in an array on the top of the placement platform; a motor fixedly connected to the bottom end of the worktable; a friction wheel fixedly connected to the output end of the motor; the heat sink cover is positioned by pressing down from the top through the first rotating shaft, which, together with the bottom support of the placement platform, forms an upper and lower clamping structure, reducing the shaking of the heat sink cover during grinding and ensuring accurate grinding position. After grinding one side of the heat sink cover, the first rotating shaft moves up to release the positioning, which can quickly adjust the heat sink cover to achieve grinding of different sides, reducing the tediousness of having to remove the heat sink cover from the middle of the positioning device and reposition it after grinding one side, and increasing the grinding speed of the heat sink cover.

[0007] Preferably, an air pump is fixedly connected to the top of the first support frame; an air pipe is fixedly connected to the side wall of the air pump; the air pipe extends into the interior of the first support frame; a first air jet is fixedly connected to the top of the air pipe; the first air jet is located in the middle of the cylinder; a baffle is fixedly connected to the top of the worktable; multiple sets of second air jets are fixedly connected to the side wall of the baffle; the air pipe is connected to the baffle; by the air pump driving the first air jet to blow air, the debris generated during the grinding process can be blown away from the surface of the heat sink cover in time, reducing the accumulation of debris that affects the grinding accuracy or scratches the surface of the workpiece. The baffle, in conjunction with the auxiliary blowing of the multiple sets of second air jets, causes the debris to fall along a preset path, thereby guiding the debris and simplifying the cleaning process.

[0008] Preferably, a slide rail is slidably connected to the top of the worktable; a grinding shaft is rotatably connected to the top of the slide rail; by pushing the grinding shaft to slide in the middle of the slide rail close to the edge of the heat sink cover, the corner areas that are easily missed during grinding are processed, ensuring that the grinding effect of the edge of the heat sink cover is consistent with that of the main body surface, and improving the overall grinding quality.

[0009] Preferably, a fixed seat is fixedly connected to the top of the first support frame; the fixed seat is located near the cylinder; a rotating seat is rotatably connected to the middle of the fixed seat; a spotlight is fixedly connected to the bottom of the rotating seat; by illuminating the heat sink cover with the spotlight, the surface condition of the polished area can be observed, reducing the roughness of the heat sink and increasing the overall quality of the heat sink cover.

[0010] Preferably, a brush is fixedly attached to the top of the worktable; the brush is slidably connected to the side wall of the placement table; by the brush slidingly contacting the rotating side wall of the placement table, debris adhering to the side of the placement table can be scraped off, reducing the impact of debris accumulation on the rotational accuracy of the placement table and the friction wheel.

[0011] Preferably, a collection box is fixedly connected to the bottom of the workbench; a pull box is slidably connected to the middle of the collection box; a magnetic block is fixedly connected to the bottom of the pull box; the pull box can be pulled out from the middle of the collection box, so that the accumulated debris can be easily removed for further processing; the magnetic block's adsorption function on the iron block can separate the metal debris from the non-metallic impurities, reducing the mixing between different debris.

[0012] The advantages of this utility model are:

[0013] 1. The positioning fixture for grinding a heat sink cover according to this utility model uses a first rotating shaft to press down and position the heat sink cover from the top. With the support of the bottom of the placement table, an upper and lower clamping structure is formed, which reduces the shaking of the heat sink cover during grinding and ensures accurate grinding position. After grinding one side of the heat sink cover, the first rotating shaft moves up to release the positioning, which can quickly adjust the heat sink cover to achieve grinding of different sides. This reduces the tediousness of having to remove the heat sink cover from the middle of the positioning device and reposition it after grinding one side, and increases the grinding speed of the heat sink cover.

[0014] 2. The positioning fixture for grinding a heat sink cover described in this utility model uses an air pump to drive the first air jet to blow air, which can promptly blow away the debris generated during the grinding process from the surface of the heat sink cover, reducing the accumulation of debris that may affect the grinding accuracy or scratch the surface of the workpiece. The baffle, in conjunction with the auxiliary blowing of multiple sets of second air jets, causes the debris to fall along a preset path, thereby guiding the debris and simplifying the cleaning process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the grinding disc in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the placement platform in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the collection box in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the magnetic block in this utility model.

[0021] In the diagram: 1. Workbench; 11. First support frame; 12. Cylinder; 13. First rotating shaft; 14. Second support frame; 15. Grinding disc; 16. Placement platform; 17. Motor; 18. Friction wheel; 19. Round hole; 2. Air pump; 21. Air pipe; 22. First air nozzle; 23. Baffle; 24. Second air nozzle; 3. Slide rail; 31. Grinding shaft; 4. Fixed seat; 41. Rotating seat; 42. Spotlight; 5. Brush; 6. Collection box; 61. Pull box; 62. Magnetic block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 5 As shown in the embodiment of this utility model, a positioning fixture for grinding a heat sink cover includes a worktable 1; a first support frame 11 is fixedly connected to the top of the worktable 1; a cylinder 12 is fixedly connected to the top of the first support frame 11; a first rotating shaft 13 is fixedly connected to the output end of the cylinder 12; a second support frame 14 is fixedly connected to the side wall of the first support frame 11; a grinding disc 15 is fixedly connected to the bottom end of the second support frame 14; a placement platform 16 is rotatably connected to the top of the worktable 1; multiple sets of circular holes 19 are opened at the top of the placement platform 16; the circular holes 19 are arranged in an array at the top of the placement platform 16; a motor 17 is fixedly connected to the bottom end of the worktable 1; a friction wheel 18 is fixedly connected to the output end of the motor 17; during operation, the heat sink cover is placed on the top of the placement platform 16, and then the starting cylinder 12 drives the first rotating shaft 13 to move towards the placement platform 16, pressing down the heat sink cover on the placement platform 16 for positioning. After the heat sink cover on the placement platform 16 is positioned, the grinding disc 15 can be activated to connect the grinding disc 15 to the worktable 16. When the heat sink surface is touched, the start motor 17 drives the friction wheel 18 to rotate. The friction wheel 18 contacts the side of the placement platform 16, causing the placement platform 16 to rotate, which in turn causes the heat sink on top of the placement platform 16 to rotate. The first rotating shaft 13 contacts the top of the heat sink, causing the first rotating shaft 13 to rotate simultaneously. The grinding disc 15 contacts the rotating heat sink, causing the heat sink to be ground. After one side of the heat sink is ground, simply push the cylinder 12 to move the first rotating shaft 13 upward to release the heat sink from its position, and then grind it again. The first rotating shaft 13 presses down on the heat sink from the top to position it, and together with the bottom support of the placement platform 16, forms an upper and lower clamping structure, reducing the shaking of the heat sink during grinding and ensuring accurate grinding position. After grinding one side of the heat sink, the first rotating shaft 13 moves upward to release the position, which can quickly adjust the heat sink to achieve grinding of different sides. This reduces the tediousness of having to remove the heat sink from the center of the positioning device and reposition it after grinding one side, and increases the grinding speed of the heat sink.

[0025] like Figure 1 and Figure 3As shown, an air pump 2 is fixedly connected to the top of the first support frame 11; an air pipe 21 is fixedly connected to the side wall of the air pump 2; the air pipe 21 extends into the interior of the first support frame 11; a first jet nozzle 22 is fixedly connected to the top of the air pipe 21; the first jet nozzle 22 is located in the middle of the cylinder 12; a baffle 23 is fixedly connected to the top of the worktable 1; multiple sets of second jet nozzles 24 are fixedly connected to the side wall of the baffle 23; the air pipe 21 is connected to the baffle 23; during operation, the grinding disc 15 will generate debris when grinding the surface of the heat sink cover, at which time the air pump 15 is activated. Pump 2 drives the first air jet 22 to blow air. The airflow contacts the surface of the heat sink cover and blows the debris to the side of the baffle 23. The second air jet 24 can further blow the debris so that it falls to the bottom of the placement table 16. By driving the first air jet 22 to blow air, the debris generated during the grinding process can be blown away from the surface of the heat sink cover in time, reducing the accumulation of debris that affects the grinding accuracy or scratches the surface of the workpiece. The baffle 23, together with the auxiliary blowing of multiple sets of second air jets 24, makes the debris fall along the preset path, realizing the guidance of debris and simplifying the cleaning process.

[0026] like Figure 1 and Figure 2 As shown, a slide rail 3 is slidably connected to the top of the worktable 1; a grinding shaft 31 is rotatably connected to the top of the slide rail 3; during operation, when the heat dissipation cover above the placement table 16 is being rotated and ground, multiple sets of grinding shafts 31 can be pushed to slide in the middle of the slide rail 3, bringing the grinding shafts 31 close to the edge of the heat dissipation cover, so that the edge of the heat dissipation cover can be further ground; by pushing the grinding shafts 31 to slide in the middle of the slide rail 3 close to the edge of the heat dissipation cover, the corner areas that are easily missed during grinding can be processed, ensuring that the grinding effect of the edge of the heat dissipation cover is consistent with that of the main body surface, and improving the overall grinding quality.

[0027] like Figures 1 to 2 As shown, a fixed seat 4 is fixedly connected to the top of the first support frame 11; the fixed seat 4 is located near the cylinder 12; a rotating seat 41 is rotatably connected to the middle of the fixed seat 4; a spotlight 42 is fixedly connected to the bottom of the rotating seat 41; during operation, when polishing the heat dissipation cover above the placement platform 16, the spotlight 42 is turned on to illuminate the heat dissipation cover above the placement platform 16, and the polishing condition of the heat dissipation cover can be observed. Applying a pushing force to the rotating seat 41 can further adjust the tilt angle of the spotlight 42; by illuminating the heat dissipation cover with the spotlight 42, the surface condition of the polished area can be observed, reducing the roughness of the heat dissipation fins and increasing the overall quality of the heat dissipation cover.

[0028] like Figure 1 and Figure 3As shown, a brush 5 is fixedly attached to the top of the worktable 1; the brush 5 is slidably connected to the side wall of the placement platform 16; during operation, when the friction wheel 18 drives the placement platform 16 to rotate, the debris generated by the heat dissipation cover polished above the placement platform 16 will stick to the side of the placement platform 16. At this time, the brush 5 can clean the side of the rotating placement platform 16; through the sliding contact between the brush 5 and the side wall of the rotating placement platform 16, the debris stuck to the side of the placement platform 16 can be scraped off, reducing the impact of debris accumulation on the rotation accuracy of the placement platform 16 and the friction wheel 18.

[0029] like Figures 4 to 5 As shown, a collection box 6 is fixedly connected to the bottom of the workbench 1; a pull box 61 is slidably connected to the middle of the collection box 6; a magnetic block 62 is fixedly connected to the bottom of the pull box 61; during operation, after the debris is blown to the placement table 16 by the second air nozzle 24, the debris falls into the pull box 61. After too much debris accumulates in the pull box 61, the pull box 61 can be pulled out from the middle of the collection box 6 to clean out the debris in the middle of the pull box 61. The magnetic block 62 can attract the iron blocks inside the pull box 61 to further classify the debris; by pulling the box 61 out from the middle of the collection box 6, the accumulated debris can be easily removed for further processing. The attraction function of the magnetic block 62 on the iron blocks can separate the metal debris from the non-metallic impurities, reducing the mixing between different debris.

[0030] Working principle: The heat sink cover is placed on top of the placement platform 16. Then, the starting cylinder 12 drives the first rotating shaft 13 to move towards the placement platform 16, pressing down the heat sink cover on the placement platform 16 for positioning. After the heat sink cover on the placement platform 16 is positioned, the grinding disc 15 can be activated to contact the surface of the heat sink cover. The starting motor 17 drives the friction wheel 18 to rotate. The friction wheel 18 contacts the side of the placement platform 16, causing the placement platform 16 to rotate, thereby causing the heat sink cover on top of the placement platform 16 to rotate. The first rotating shaft 13 rotates simultaneously when it contacts the top of the heat sink cover. The grinding disc 15 contacts the rotating heat sink cover, grinding it. After one side of the heat sink cover is ground, simply push the cylinder 12 to move the first rotating shaft 13 upward to remove the heat sink cover from its position. Then, grinding is performed again. The grinding disc 15 generates debris when grinding the surface of the heat sink cover. At this time, the air pump 2 is activated to drive the first air jet 22 to blow air. The airflow contacts the surface of the heat sink cover and blows the debris to the side of the baffle 23. The second air jet 2... 4. The debris can be further blown away and fall to the bottom of the placement platform 16. When the heat sink cover above the placement platform 16 is being rotated and polished, multiple polishing shafts 31 can be pushed to slide in the middle of the slide rail 3. By bringing the polishing shafts 31 close to the edge of the heat sink cover, the edge of the heat sink cover can be further polished. When polishing the heat sink cover above the placement platform 16, the spotlight 42 can be turned on to illuminate the heat sink cover above the placement platform 16 to observe the polishing condition of the heat sink cover. Applying a pushing force to the rotating seat 41 can further adjust the tilt angle of the spotlight 42. When the friction wheel 18 drives the placement platform 16 to rotate, the debris generated by the polished heat dissipation cover on the placement platform 16 will stick to the side of the placement platform 16. At this time, the brush 5 can clean the side of the rotating placement platform 16. After the debris is blown to the placement platform 16 by the second air nozzle 24, the debris falls into the pull box 61. After too much debris accumulates in the pull box 61, the pull box 61 can be pulled out from the middle of the collection box 6 to clean out the debris in the middle of the pull box 61. The magnetic block 62 can attract the iron block inside the pull box 61 to further classify the debris.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A positioning fixture for grinding a heat sink cover, characterized in that: The system includes a workbench (1); a first support frame (11) is fixedly connected to the top of the workbench (1); a cylinder (12) is fixedly connected to the top of the first support frame (11); a first rotating shaft (13) is fixedly connected to the output end of the cylinder (12); a second support frame (14) is fixedly connected to the side wall of the first support frame (11); a grinding disc (15) is fixedly connected to the bottom end of the second support frame (14); a placement platform (16) is rotatably connected to the top of the workbench (1); multiple sets of round holes (19) are opened on the top of the placement platform (16); the round holes (19) are arranged in an array on the top of the placement platform (16); a motor (17) is fixedly connected to the bottom end of the workbench (1); a friction wheel (18) is fixedly connected to the output end of the motor (17).

2. The positioning fixture for grinding a heat sink cover according to claim 1, characterized in that: An air pump (2) is fixedly connected to the top of the first support frame (11); an air pipe (21) is fixedly connected to the side wall of the air pump (2); the air pipe (21) extends into the interior of the first support frame (11); a first jet port (22) is fixedly connected to the top of the air pipe (21); the first jet port (22) is located in the middle of the cylinder (12); a baffle (23) is fixedly connected to the top of the workbench (1); multiple sets of second jet ports (24) are fixedly connected to the side wall of the baffle (23); the air pipe (21) is connected to the baffle (23).

3. The positioning fixture for grinding a heat sink cover according to claim 2, characterized in that: The top of the workbench (1) is slidably connected to a slide rail (3); the top of the slide rail (3) is rotatably connected to a grinding shaft (31).

4. The positioning fixture for grinding a heat sink cover according to claim 3, characterized in that: The first support frame (11) is fixedly connected to a fixed seat (4) at its top end; the fixed seat (4) is located on the side close to the cylinder (12); a rotating seat (41) is rotatably connected to the middle of the fixed seat (4); a spotlight (42) is fixedly connected to the bottom end of the rotating seat (41).

5. The positioning fixture for grinding a heat sink cover according to claim 4, characterized in that: A brush (5) is fixedly attached to the top of the workbench (1); the brush (5) is slidably connected to the side wall of the placement platform (16).

6. The positioning fixture for grinding a heat sink cover according to claim 5, characterized in that: The bottom of the workbench (1) is fixedly connected to a collection box (6); a pull box (61) is slidably connected to the middle of the collection box (6); a magnetic block (62) is fixedly connected to the bottom of the pull box (61).

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