Silicon nitride ceramic polishing disk structure

Abstract

The utility model relates to ceramic polishing grinding disc technical field discloses silicon nitride ceramic polishing grinding disc structure, including a plurality of movable base, a plurality of movable base's middle portion outside thread connection has the bolt one, a plurality of movable base's middle portion inside fixed connection has the fixed pivot, the outer wall rotation of fixed pivot is connected with two connecting rods, two connecting rods are connected through the rotation of moving pivot, a plurality of fixed pivot's top fixed connection has the rotary disc, a plurality of movable base's outer wall fixed connection has the locking ring. In the utility model, rotate rotary disc, drive connecting rod rotation, through the included angle between the connecting rod of moving pivot connection gradually expands from initial state to 180 degrees, drives movable base to move from the center to the outside, in the movable base outward movement process, the grinding disc one of fan unit distribution follows outward unfolding separation, and the modularization makes the grinding disc of different wear degree can be replaced in batches.

Description

Technical Field

[0001] This utility model relates to the field of ceramic polishing and grinding disc technology, and in particular to the structure of silicon nitride ceramic polishing and grinding disc. Background Technology

[0002] Silicon nitride ceramic is a high-performance advanced ceramic material composed of silicon and nitrogen elements bonded by chemical bonds. Due to its unique physical, chemical, and mechanical properties, it is widely used in industrial, electronic, aerospace, and medical fields. A silicon nitride ceramic polishing and grinding disc is a tool designed to grind silicon nitride ceramic raw materials to a target size and shape, or to a certain degree of flatness. Its main structure includes a matrix, transition layer, functional layer, cooling channels, regional structure, and fixing interface.

[0003] In practical use, due to the high hardness of silicon nitride ceramic materials, silicon nitride ceramic polishing and grinding discs often experience localized structural cracking due to high-speed friction and collision, resulting in rapid frictional wear. Furthermore, the heat generated during high-speed grinding can cause localized temperature rises exceeding 600°C, leading to thermal expansion and a significant increase in internal stress. Once this stress exceeds the disc's tolerance, it will crack, seriously jeopardizing production safety. Currently, the main solution is to manually replace unusable grinding discs. However, this method requires complete disassembly of the grinding disc and its connecting structures, which is time-consuming and significantly impacts production schedules. Moreover, this operation requires specialized personnel, increasing labor costs and posing certain operational risks. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a silicon nitride ceramic polishing and grinding disc structure, which aims to improve the problems of the existing technology, such as long time consumption, significant impact on production rhythm, increased labor costs in the production process, and certain operational hazards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a silicon nitride ceramic polishing and grinding disc structure, comprising multiple movable bases, with a bolt threadedly connected to the outer side of the middle portion of each of the multiple movable bases, and a fixed rotating shaft fixedly connected to the inner side of the middle portion of each of the multiple movable bases. Two connecting rods are rotatably connected to the outer wall of the fixed rotating shaft, and the two connecting rods are rotatably connected through a movable rotating shaft. A rotating disc is fixedly connected to the top of each of the multiple fixed rotating shafts, and a locking ring is fixedly connected to the outer wall of each of the multiple movable bases. A water-cooling mechanism is installed at the bottom of each of the multiple movable bases. The function of the water-cooling mechanism is to reduce the high temperature generated by the high-speed friction between the polishing disc and the substrate.

[0006] As a further description of the above technical solution:

[0007] The water cooling mechanism includes a main water tank, which is installed at the bottom of multiple movable bases. Heat dissipation fins are fixedly connected to the left and right outer walls of the main water tank. Guide plates are fixedly connected to the inner walls of the main water tank. A stirring blade is rotatably connected to the bottom of the main water tank. A circulating water pipe is connected to the top left side of the main water tank. An auxiliary water tank is installed at the bottom of the main water tank. A scraper is slidably connected to the bottom of the auxiliary water tank. A circulating water pipe is connected to the bottom right side of the auxiliary water tank. A water pump is connected to the middle of the circulating water pipe.

[0008] As a further description of the above technical solution:

[0009] The main water tank is slidably connected to a permeable working frame on its top, and a grinding disc is threadedly connected to the outer side of the bolt.

[0010] As a further description of the above technical solution:

[0011] A motor is fixedly connected to the top wall of the auxiliary water tank, and the output end of the motor is fixedly connected to the stirring blade. A bracket is fixedly connected to the rear side of the auxiliary water tank.

[0012] As a further description of the above technical solution:

[0013] The front side of the bracket is threaded with a hydraulic push rod, and a waterproof sealing gasket is fixedly connected to the bottom outer side of the hydraulic push rod.

[0014] As a further description of the above technical solution:

[0015] The main water tank has an inlet on the top left side and the auxiliary water tank has an outlet on the bottom right side.

[0016] As a further description of the above technical solution:

[0017] A workbench is installed on the rear side of the water cooling mechanism. A partition is slidably connected to the middle of the workbench, and bolts are threaded to the four corners of the top wall of the partition.

[0018] As a further description of the above technical solution:

[0019] The main water tank and the auxiliary water tank are connected by a connecting pipe, and a support column is fixedly connected to the middle of the workbench.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, rotating the rotating disk drives the connecting rod to rotate. The included angle of the connecting rod connected by the moving rotating shaft gradually increases from the initial state to 180 degrees, driving the movable base to move outward from the center. Since the movable base and the grinding disc are fixed by bolts, the grinding discs, which are distributed in a fan-shaped unit, unfold and separate outward during the movement of the movable base, realizing independent disassembly, maintenance or replacement, shortening the time spent on a single maintenance. Modular design allows grinding discs with different degrees of wear to be replaced in batches. Independent operation reduces cross-interference during the maintenance process and lowers the professional skill requirements for operators.

[0022] 2. In this utility model, the substrate is placed on a permeable working frame, and the position of the movable base in the main water tank is adjusted to adapt to different working conditions. During the grinding operation, the heat generated by high-speed friction is conducted to the coolant in the main water tank through the permeable working frame. The stirring blades and the guide plate make the water flow in a spiral path circulation. The heat dissipation fins help to enhance heat conduction and improve cooling efficiency. The scraper is used to clean the sediment at the bottom of the tank. The cooling water in the auxiliary water tank is pumped back to the main water tank from the inlet through the circulating water pipe, forming a closed-loop heat dissipation. This system helps to solve the problem of uneven local heat dissipation in traditional systems, improves the reliability and service life of the equipment, and the overall structure is easy to maintain and repair, making it easier to control costs. Attached Figure Description

[0023] Figure 1 This is a perspective view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model;

[0024] Figure 2 This is a front view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model;

[0025] Figure 3 This is a partial structural exploded view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model;

[0026] Figure 4 This is a partial three-dimensional view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model;

[0027] Figure 5 This is a partial front view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model;

[0028] Figure 6 This is a partial cross-sectional view of the silicon nitride ceramic polishing and grinding disc structure proposed in this utility model.

[0029] Legend:

[0030] 1. Movable base; 2. Water cooling mechanism; 201. Main water tank; 202. Stirring blades; 203. Heat dissipation fins; 204. Guide plate; 205. Auxiliary water tank; 206. Scraper; 207. Circulating water pipe; 208. Water pump; 3. Connecting rod; 4. Bolt 1; 5. Fixed rotating shaft; 6. Rotating disc; 7. Locking ring; 8. Moving rotating shaft; 9. Grinding disc 1; 10. Water-permeable working frame; 11. Water inlet; 12. Water outlet; 13. Bracket; 14. Hydraulic push rod; 15. Support column; 16. Partition plate; 17. Motor; 18. Waterproof sealing gasket; 19. Workbench; 20. Connecting pipe; 21. Bolt 2. Detailed Implementation

[0031] 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 protection scope of the present utility model.

[0032] Reference Figure 2 and Figure 3 This utility model provides an embodiment of a silicon nitride ceramic polishing and grinding disc structure, including multiple movable bases 1. Bolts 4 are threadedly connected to the outer side of the middle of the multiple movable bases 1. Fixed rotating shafts 5 are fixedly connected to the inner side of the middle of the multiple movable bases 1. Two connecting rods 3 are rotatably connected to the outer wall of the fixed rotating shafts 5. The two connecting rods 3 are rotatably connected through a movable rotating shaft 8. A rotating disk 6 is fixedly connected to the top of the multiple fixed rotating shafts 5. Rotating the rotating disk 6, with the cooperation of the connecting rods 3 and the multiple rotating shafts, allows the multiple movable bases 1 to unfold. A locking ring 7 is fixedly connected to the outer wall of the movable bases 1, keeping the multiple movable bases 1 in a closed and locked state during equipment operation. A water cooling mechanism 2 is installed at the bottom of the multiple movable bases 1. The function of the water cooling mechanism 2 is to reduce the high temperature generated by the high-speed friction between the grinding disc and the substrate. A worktable 19 is installed on the rear side of the water cooling mechanism 2. A partition 16 is slidably connected to the middle of the worktable 19. Bolts 21 are threadedly connected to the four corners of the top wall of the partition 16, forming a support for all equipment.

[0033] Specifically, during the production process, when the grinding disc 9 needs to be replaced due to wear or other reasons, the locking ring 7 must first be operated. The locking ring 7 fixes the movable base 1 in its initial position, restricting its movement. At this time, the locking ring 7 is gradually loosened. As the locking ring 7 loosens, the movable base 1 has the condition to extend outward. Next, the rotating disk 6 is rotated. The rotating disk 6 is connected to the connecting rod 3. When the rotating disk 6 starts to rotate, it drives the connecting rod 3 to start rotating around the moving shaft 8. Initially, the angle between the multiple connecting rods 3 connected by the moving shaft 8 is small, and they are in a convergent state. As the rotating disk 6 continues to rotate, the connecting rods 3 continue to rotate under its drive, and the angle between them gradually increases. During this process, the connecting rods 3 continuously extend. When the rotating disk 6 rotates to a specific position, the angle between the multiple connecting rods 3 becomes 180 degrees. At this time, the connecting rods 3 are fully extended. Under the action of the movement of the connecting rods 3... The movable base 1 begins to move outward from the center position. The movable base 1 and the grinding disc 9 are connected and fixed by bolts 4. This connection method makes the two tightly integrated into a whole. Therefore, when the movable base 1 moves outward, it will drive the grinding disc 9, which is divided into multiple fan-shaped units, to unfold outward together. The multiple grinding discs 9 that were originally combined together will gradually separate from each other under the action of the movable base 1 until they are completely dispersed. This allows for the maintenance, disassembly, or replacement of each independent grinding disc 9. Compared with the traditional replacement method, it is not necessary to replace and repair all grinding discs 9. This replacement method simplifies the operation process, shortens the replacement time, and allows the equipment to be put back into production more quickly. At the same time, only the grinding discs 9 that need to be replaced are operated, reducing unnecessary replacement costs, lowering the economic input in the production and processing process, and effectively saving production and processing costs.

[0034] Reference Figure 4 , Figure 5 and Figure 6The water-cooling mechanism 2 includes a main water tank 201, which is installed at the bottom of multiple movable bases 1. Heat dissipation fins 203 are fixedly connected to the left and right outer walls of the main water tank 201. Guide plates 204 are fixedly connected to the inner walls of the main water tank 201. A stirring blade 202 is rotatably connected to the bottom of the main water tank 201. The stirring blade 202 drives the water or coolant in the main water tank 201 to flow in a spiral motion under the constraint of the guide plates 204. A circulating water pipe 207 is connected to the top left side of the main water tank 201. A secondary water tank 205 is installed at the bottom of the main water tank 201. A scraper 206 is slidably connected to the bottom of the secondary water tank 205, its function being to ensure that sediment in the secondary water tank 205, where the water flow is slower, can be cleaned in a timely manner without clogging. The bottom right side of the auxiliary water tank 205 is connected to a circulating water pipe 207, and the middle of the circulating water pipe 207 is connected to a water pump 208, which is the power source for the water circulation of the entire water cooling mechanism 2. The top of the main water tank 201 is slidably connected to a permeable working frame 10, and the outer thread of the bolt 4 is connected to a grinding disc 9. The top wall of the auxiliary water tank 205 is fixedly connected to a motor 17, and the output end of the motor 17 is fixedly connected to the stirring blade 202 to provide power for the rotation of the stirring blade 202. The rear side of the auxiliary water tank 205 is fixedly connected to a bracket 13. The top left side of the main water tank 201 is connected to a water inlet 11, and the bottom right side of the auxiliary water tank 205 is connected to a water outlet 12. The two are the connection mechanisms between the circulating water pipe 207 and the main water tank 201 and the auxiliary water tank 205.

[0035] Specifically, before starting the grinding operation, the operator places the substrate to be processed stably on the permeable work frame 10 to provide basic support for subsequent processing. Then, according to different operational requirements, the position of the movable base 1 in the main water tank 201 is adjusted to bring the equipment to its optimal working state. The sliding function of the movable base 1 gives the equipment the ability to adapt to various working conditions. When the grinding machine is officially started, the high-speed rotating grinding disc generates intense friction with the substrate, releasing a large amount of heat. This heat is conducted along the permeable work frame 10 to the pre-filled coolant in the main water tank 201. At this time, the motor 17 is started to drive the agitator. The stirring blades 202 rotate within the main water tank 201. This rotation causes water to flow. Simultaneously, the guide plate 204 guides the water flow, driven by the stirring blades 202, along a spiral path within the main water tank 201. This increases the distance the water travels within the main water tank 201, thus extending the time the coolant is in contact with and absorbs heat. The cooling fins 203 capture and absorb heat transferred from the surrounding coolant and rapidly conduct it to the surrounding space, further enhancing the overall cooling system's heat dissipation effect. As the coolant continuously absorbs heat, its temperature gradually rises, turning into hot water. Under the influence of gravity, the hot water flows through the connecting pipe 20 into the auxiliary water tank 205 for temporary storage and cooling. Inside the auxiliary water tank 205, the hydraulic push rod 14 drives the scraper 206 to reciprocate at the bottom of the auxiliary water tank 205. During this process, the scraper 206 cleans the sediment or blockages deposited at the bottom of the auxiliary water tank 205, ensuring the cleanliness of the interior of the auxiliary water tank 205 and maintaining smooth flow of coolant. After a period of storage and cooling, the coolant returns to a suitable temperature. The fully cooled coolant flows into the circulating water pipe 207 through the outlet 12, and then, under the action of the water pump 208... The coolant returns to the main water tank 201 through the inlet 11 and is reintroduced into the heat dissipation cycle. Unlike traditional local heat dissipation methods, this system avoids local overheating caused by uneven heat dissipation, ensuring that all components of the equipment are within a stable operating temperature range. In addition, the gaps reserved between the multiple grinding discs 9 during the equipment design provide necessary redundancy space for them to absorb heat and expand, avoiding breakage due to excessive deformation exceeding the stress bearing capacity of the grinding discs 9, effectively extending the service life of the grinding discs 9. At the same time, the entire cooling system is easy to operate and maintain.

[0036] Reference Figure 1 , Figure 5 and Figure 6The front side of the bracket 13 is threaded with a hydraulic push rod 14, and the bottom of the outer side of the hydraulic push rod 14 is fixedly connected with a waterproof sealing gasket 18. The combination of the two can ensure the overall sealing while moving and providing power to the scraper 206. The main water tank 201 and the auxiliary water tank 205 are connected by a connecting pipe 20 to provide a channel for the flow of water or coolant between the two water tanks. The middle of the workbench 19 is fixedly connected with a support column 15, which increases the overall stability of the equipment.

[0037] Specifically, bolts are provided on the front side of the bracket 13, into which the hydraulic push rod 14 is screwed to ensure a stable connection and facilitate flexible adjustment of the telescopic length. A waterproof sealing gasket 18 is fixed on the bottom outer side of the hydraulic push rod 14. The function of this sealing gasket is to prevent leakage of coolant or water in the auxiliary water tank 205. The main water tank 201 and the auxiliary water tank 205 are connected by a connecting pipe 20 to provide a channel for the circulation of coolant. The support column 15 is vertically connected in the middle of the workbench 19 to provide stable and reliable support for the components above, ensuring smooth operation of the equipment.

[0038] Working principle: When the grinding disc 9 needs to be replaced, the locking ring 7 is loosened, allowing the movable base 1 to extend outward. At this time, the rotating disk 6 is rotated, which drives the connecting rod 3 to start rotating. The included angle between the multiple connecting rods 3 connected by the moving shaft 8 gradually increases. As the rotating disk 6 is continuously rotated, the included angle becomes 180 degrees. At this time, the movable base 1 moves outward from the center under the movement of the connecting rod 3. Since there is a bolt 4 between the movable base 1 and the grinding disc 9, the movable base 1 will drive the grinding disc 9, which is divided into multiple fan-shaped units, to unfold outward as it moves outward. Thus, the multiple grinding discs 9 are completely separated. Therefore, maintenance, disassembly or replacement of each independent grinding disc 9 can be achieved without replacing and repairing all grinding discs 9, saving operation time and production and processing costs.

[0039] The substrate to be processed is placed on the permeable working frame 10. The movable base 1 can be slidably adjusted to change its position in the main water tank 201 to adapt to different operational requirements. After the grinding machine starts working, the heat generated by high-speed friction is conducted by the permeable working frame 10 to the water or other coolant pre-filled in the main water tank 201. The motor 17 drives the stirring blades 202 to rotate, allowing the water in the main water tank 201 to flow. The guide plate 204 allows the water to move in a spiral path in the main water tank 201 under the drive of the stirring blades 202, extending the water's movement path and increasing the time for the water to absorb heat. The heat dissipation fins 203, as an auxiliary, absorb more heat and conduct it to the surrounding area, improving the cooling effect. The hot water that has absorbed heat is then transferred to the surrounding area by gravity. The water flows into the auxiliary water tank 205 through the pipe 20 for temporary storage and cooling. The scraper 206 reciprocates using the hydraulic push rod 14 as a power source to clean the sediment or blockages at the bottom of the auxiliary water tank 205. The fully cooled water flows into the circulating water pipe 207 through the outlet 12 and returns to the main water tank 201 through the inlet 11 under the action of the water pump 208, and rejoins the heat dissipation circulation. This increases the heat dissipation effect on the workpiece and the grinding disc 9 as a whole, avoiding the problem of uneven heat absorption caused by traditional local heat dissipation. It is also easy to operate and maintain. At the same time, the gaps between the multiple grinding discs 9 provide redundant space for them to absorb heat and expand, reducing the occurrence of the situation where the deformation exceeds the stress bearing range of the grinding disc 9 and causes it to break and become unusable.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silicon nitride ceramic polishing and grinding disc structure, characterized in that: It includes multiple movable bases (1), with bolts (4) threadedly connected to the outer side of the middle of the multiple movable bases (1), and fixed rotating shafts (5) fixedly connected to the inner side of the middle of the multiple movable bases (1). Two connecting rods (3) are rotatably connected to the outer wall of the fixed rotating shafts (5). The two connecting rods (3) are rotatably connected through a movable rotating shaft (8). A rotating disk (6) is fixedly connected to the top of the multiple fixed rotating shafts (5). A locking ring (7) is fixedly connected to the outer wall of the multiple movable bases (1). A water cooling mechanism (2) is installed at the bottom of the multiple movable bases (1). The function of the water cooling mechanism (2) is to reduce the high temperature generated by the high-speed friction between the grinding disk and the substrate.

2. The silicon nitride ceramic polishing and grinding disc structure according to claim 1, characterized in that: The water cooling mechanism (2) includes a main water tank (201), which is installed at the bottom of multiple movable bases (1). Heat dissipation fins (203) are fixedly connected to the left and right outer walls of the main water tank (201). Guide plates (204) are fixedly connected to the inner walls of the main water tank (201). A stirring blade (202) is rotatably connected to the bottom of the main water tank (201). A circulating water pipe (207) is connected to the top left side of the main water tank (201). A secondary water tank (205) is installed at the bottom of the main water tank (201). A scraper (206) is slidably connected to the bottom of the secondary water tank (205). A circulating water pipe (207) is connected to the bottom right side of the secondary water tank (205). A water pump (208) is connected to the middle of the circulating water pipe (207).

3. The silicon nitride ceramic polishing and grinding disc structure according to claim 2, characterized in that: The main water tank (201) is slidably connected to a permeable working frame (10), and the outer side of the bolt (4) is threadedly connected to a grinding disc (9).

4. The silicon nitride ceramic polishing and grinding disc structure according to claim 2, characterized in that: A motor (17) is fixedly connected to the top wall of the auxiliary water tank (205), and the output end of the motor (17) is fixedly connected to the stirring blade (202). A bracket (13) is fixedly connected to the rear side of the auxiliary water tank (205).

5. The silicon nitride ceramic polishing and grinding disc structure according to claim 4, characterized in that: The front side of the bracket (13) is threaded with a hydraulic push rod (14), and a waterproof sealing gasket (18) is fixedly connected to the bottom outer side of the hydraulic push rod (14).

6. The silicon nitride ceramic polishing and grinding disc structure according to claim 2, characterized in that: The main water tank (201) has an inlet (11) connected to the top left side, and the auxiliary water tank (205) has an outlet (12) connected to the bottom right side.

7. The silicon nitride ceramic polishing and grinding disc structure according to claim 2, characterized in that: A workbench (19) is installed on the rear side of the water cooling mechanism (2). A partition (16) is slidably connected to the middle of the workbench (19). Bolts (21) are threadedly connected to the four corners of the top wall of the partition (16).

8. The silicon nitride ceramic polishing and grinding disc structure according to claim 7, characterized in that: The main water tank (201) and the auxiliary water tank (205) are connected by a connecting pipe (20), and a support column (15) is fixedly connected to the middle of the workbench (19).

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