A clamp for producing silicon nitride ceramic balls
By designing a combined structure of box body, box cover, placement cylinder and air pump, the problem of surface damage and fixation when clamping silicon nitride ceramic balls by existing clamps is solved, and non-destructive clamping and stable fixation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHIBANG ELABORATION TECH CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-05-29
AI Technical Summary
Existing clamps are prone to causing surface damage when holding silicon nitride ceramic balls and are difficult to effectively fix the balls.
A clamping device was designed, comprising a box body, a box cover, a placement cylinder, an air pump, and a pushing structure. The silicon nitride ceramic ball is fixed by air extraction and limiting through the air pump. Combined with the connection structure of the elastic steel plate and the limiting protrusion, direct mechanical clamping is avoided, and flexible fixation is achieved.
This method enables non-destructive clamping and stable fixation of silicon nitride ceramic balls, avoiding surface damage and improving the convenience and reliability of clamping.
Smart Images
Figure CN224295717U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of silicon nitride ceramic ball production technology, specifically a fixture for silicon nitride ceramic ball production. Background Technology
[0002] Silicon nitride balls are a new type of ceramic product made primarily of silicon nitride. They possess properties such as high temperature resistance, corrosion resistance, and electrical insulation, making them a core component of hybrid ceramic ball bearings. Their crystal structure is predominantly covalent, giving the material high hardness and stability. Even at 800℃, they maintain stable strength and hardness. Furthermore, their density is 59% lower than steel, significantly reducing centrifugal force during high-speed operation. This material also exhibits self-lubricating properties, allowing it to operate effectively in environments without lubrication or contaminated environments. However, the production and processing of silicon nitride ceramic balls requires the use of clamps. Currently, some clamps on the market use mechanical clamping, which can easily damage the surface of the silicon nitride ceramic balls during clamping. Additionally, because they are spherical, clamping is inconvenient. Therefore, a new clamp for the production of silicon nitride ceramic balls is proposed. Utility Model Content
[0003] The purpose of this utility model is to provide a fixture for the production of silicon nitride ceramic balls, so as to solve the problem mentioned in the background art that some fixtures on the market use mechanical clamping, which easily causes damage to the surface of silicon nitride ceramic balls when clamping them, and is also inconvenient to clamp because they are spheres.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixture for producing silicon nitride ceramic balls, comprising a box body, a lid on the top of the box body, a plurality of placement cylinders uniformly and sealed to the top of the lid, a circular plate fixedly disposed on the outer side of each placement cylinder, a first sealing ring fixedly disposed inside the top of each placement cylinder, a connecting structure between the box body and the lid, a connecting pipe fixedly connected to one side of the box body, a vacuum pump fixedly connected to one end of the connecting pipe, and a feeding structure on the top of the lid.
[0005] Preferably, the connecting structure includes multiple elastic steel plates, which are fixedly installed on both sides of the box cover. A rectangular frame is fixedly provided at the bottom of the box cover and inserted into the inside of the box body. A second sealing ring is fitted inside the outer side of the rectangular frame. Two limiting protrusions are fixedly provided on both sides of the box body, and the limiting protrusions are respectively fastened inside the multiple elastic steel plates.
[0006] Preferably, the feeding structure includes multiple limiting plates, which are fixedly installed at the four corners of the top of the box cover. A placement box is provided above the box cover. Insertion rods are fixedly provided at the four corners of the bottom of the placement box, with one end of each insertion rod inserted into the inside of the limiting plate. Multiple feeding cylinders are uniformly fixedly arranged inside the placement box. Multiple conical elastic plates are uniformly fixedly arranged at the bottom of the placement box. A pushing structure is provided inside the placement box.
[0007] Preferably, the pushing structure includes a push plate, which is slidably installed inside the placement box and inside the feeding cylinder. Both sides of the placement box are slidably provided with grip plates, which are fixedly connected to the push plate. Both sides of the placement box are fixedly provided with fixing plates, and a fixing rod is fixedly provided on the top of the fixing plate, which passes through the grip plate. A spring is sleeved on the outside of the fixing rod.
[0008] Preferably, the outer side of the rectangular frame is provided with a groove, and the second sealing ring is fitted inside the groove.
[0009] Preferably, the grip plate has a through hole in the middle, and the fixing rod slides through the through hole.
[0010] Preferably, a groove is provided on the outer side of the feeding cylinder, and the push plate is slidably installed inside the groove.
[0011] Preferably, the elastic steel plate has a limiting hole inside, and the limiting protrusion engages with the limiting hole.
[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:
[0013] This utility model, by setting up a box cover, a placement cylinder, a circular plate, and a first sealing ring, allows for the following process when processing and clamping silicon nitride ceramic balls: the box cover is installed on the top of the box body, and then the placement cylinder is sealed and inserted into the top of the box cover. The placement box containing the silicon nitride ceramic balls is then installed above the box cover. Pressing the push plate pushes the silicon nitride ceramic balls inside the feeding cylinder out to the top of the placement cylinder, separating the placement box from the box cover. The air pump is then started to limit and fix the silicon nitride ceramic balls at the top of the placement cylinder, facilitating clamping and preventing damage to their surface. Attached Figure Description
[0014] Figure 1 This is a side view of the structure of this utility model;
[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0016] Figure 3 This is a schematic diagram of the connection structure between the box body and the box lid of this utility model;
[0017] Figure 4 This is a schematic diagram of the connection structure between the placement box and the push plate of this utility model;
[0018] Figure 5 For the present utility model Figure 2 A magnified structural diagram of A in the middle.
[0019] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Box lid; 3. Placement cylinder; 4. Circular plate; 5. First sealing ring; 6. Elastic steel plate; 7. Rectangular frame; 8. Second sealing ring; 9. Limiting protrusion; 10. Connecting pipe; 11. Air pump; 12. Limiting plate; 13. Placement box; 14. Insert rod; 15. Feeding cylinder; 16. Conical elastic plate; 17. Push plate; 18. Holding plate; 19. Fixing plate; 20. Fixing rod; 21. Spring. Detailed Implementation
[0020] 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.
[0021] Example
[0022] Please see Figure 1-5 This utility model provides a technical solution: a fixture for producing silicon nitride ceramic balls, including a box body 1, a box cover 2 on the top of the box body 1, a plurality of placement cylinders 3 uniformly and sealed to the top of the box cover 2, a circular plate 4 fixedly installed on the outer side of each placement cylinder 3, a first sealing ring 5 fixedly installed inside the top of each placement cylinder 3, a connecting structure between the box body 1 and the box cover 2, a connecting pipe 10 fixedly connected to one side of the box body 1, a vacuum pump 11 fixedly connected to one end of the connecting pipe 10, and a feeding structure on the top of the box cover 2. When processing and clamping silicon nitride ceramic balls, the box cover 2 is installed on the top of the box body 1 and fixed by the connecting structure. Then, the placement cylinders 3 are sealed and inserted into the top of the box cover 2. Then, the silicon nitride ceramic balls are pushed to the top of the placement cylinders 3 by the feeding structure. The vacuum pump 11 is started, and the vacuum pump 11 will extract the air inside the box body 1, thereby limiting and fixing the silicon nitride ceramic balls on the top of the placement cylinders 3, facilitating clamping, and also preventing damage to their surface.
[0023] The connecting structure includes multiple elastic steel plates 6, which are fixedly installed on both sides of the lid 2. A rectangular frame 7 is fixedly installed at the bottom of the lid 2 and inserted into the interior of the box body 1. A second sealing ring 8 is fitted inside the outer side of the rectangular frame 7. Two limiting protrusions 9 are fixedly installed on both sides of the box body 1. The limiting protrusions 9 are respectively fastened inside the multiple elastic steel plates 6. When the lid 2 is installed on the top of the box body 1, the rectangular frame 7 at the bottom of the lid 2 will be inserted into the interior of the box body 1. At the same time, the second sealing ring 8 on the outer side of the rectangular frame 7 improves the sealing performance. The elastic steel plates 6 on both sides of the lid 2 will be fastened to the limiting protrusions 9 on both sides of the box body 1, thereby limiting the lid 2 and facilitating disassembly and assembly.
[0024] The feeding structure includes multiple limiting plates 12, which are fixedly installed at the four corners of the top of the box cover 2. A placement box 13 is provided above the box cover 2. Insertion rods 14 are fixedly provided at the four corners of the bottom of the placement box 13, and one end of the insertion rods 14 is inserted into the inside of the limiting plates 12. Multiple feeding cylinders 15 are evenly fixedly provided inside the placement box 13. Multiple conical elastic plates 16 are evenly fixedly provided at the bottom of the placement box 13. A pushing structure is provided inside the placement box 13. When clamping the silicon nitride ceramic balls, they are poured into the inside of the placement box 13. Then, the placement box 13 is installed above the box cover 2. The placement box 13 is shaken so that the silicon nitride ceramic balls inside roll into the inside of the feeding cylinders 15. Then, the pushing structure pushes them out to the top of the placement cylinder 3.
[0025] The pushing structure includes a push plate 17, which is slidably installed inside the placement box 13 and the feeding cylinder 15. Handles 18 are slidably arranged on both sides of the placement box 13 and are fixedly connected to the push plate 17. Fixing plates 19 are fixedly arranged on both sides of the placement box 13. A fixing rod 20 is fixedly arranged on the top of the fixing plate 19 and passes through the handles 18. A spring 21 is sleeved on the outside of the fixing rod 20. When feeding silicon nitride ceramic balls, the push plate 17 is slidably installed inside the placement box 13. Then, by pressing the push plate 17, the silicon nitride ceramic balls inside the feeding cylinder 15 are pushed out. At the same time, the handles 18 on both sides of the push plate 17 compress the spring 21 with a matching elastic coefficient on the outside of the fixing rod 20, causing it to deform and thus pushing the push plate 17 back to its original position for easy reuse.
[0026] A groove is provided on the outer side of the rectangular frame 7, and the second sealing ring 8 is fitted inside the groove. The second sealing ring 8 is fastened to the outer side of the rectangular frame 7, thereby improving the sealing between the rectangular frame 7 and the box body 1.
[0027] A through hole is provided in the middle of the grip plate 18, and the fixing rod 20 slides through the through hole to guide the grip plate 18.
[0028] A groove is provided on the outer side of the feeding cylinder 15, and a push plate 17 is slidably installed inside the groove. The silicon nitride ceramic balls inside the feeding cylinder 15 can be easily pushed out by the push plate 17.
[0029] The elastic steel plate 6 has a limiting hole inside, and the limiting protrusion 9 engages with the limiting hole. By engaging the elastic steel plate 6 with the limiting protrusion 9, the lid 2 is connected to the box body 1.
[0030] The working principle or structural principle is as follows: When processing and clamping silicon nitride ceramic balls, the lid 2 is installed on the top of the box body 1, and then the placement cylinder 3 is sealed and inserted into the top of the lid 2. The silicon nitride ceramic balls are poured into the placement box 13, and then the placement box 13 is installed above the lid 2. The placement box 13 is shaken so that the silicon nitride ceramic balls inside roll into the feeding cylinder 15. Then, the push plate 17 is slidably installed inside the placement box 13. Then, by pressing the push plate 17, the silicon nitride ceramic balls inside the feeding cylinder 15 are pushed out to the top of the placement cylinder 3. At the same time, the gripping plates 18 on both sides of the push plate 17 squeeze the spring 21 with the matching elastic coefficient on the outside of the fixing rod 20, causing it to deform and thus push the push plate 17 to reset for the next use. Then, the placement box 13 is separated from the lid 2, and the vacuum pump 11 is started. The vacuum pump 11 will extract the air inside the box body 1, thereby limiting and fixing the silicon nitride ceramic balls at the top of the placement cylinder 3, which is convenient for clamping and also avoids damage to their surface.
[0031] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A fixture for producing silicon nitride ceramic balls, comprising a housing (1), characterized in that: The top of the box body (1) is provided with a box cover (2), and multiple placement cylinders (3) are uniformly sealed and inserted into the top of the box cover (2). A circular plate (4) is fixedly provided on the outer side of each placement cylinder (3). A first sealing ring (5) is fixedly provided inside the top of each placement cylinder (3). A connecting structure is provided between the box body (1) and the box cover (2). A connecting pipe (10) is fixedly connected to one side of the box body (1). A vacuum pump (11) is fixedly connected to one end of the connecting pipe (10). A material feeding structure is provided on the top of the box cover (2).
2. The fixture for producing silicon nitride ceramic balls according to claim 1, characterized in that: The connecting structure includes multiple elastic steel plates (6), which are fixedly installed on both sides of the box cover (2). A rectangular frame (7) is fixedly provided at the bottom of the box cover (2), and the rectangular frame (7) is inserted into the inside of the box body (1). A second sealing ring (8) is fitted inside the outer side of the rectangular frame (7). Two limiting protrusions (9) are fixedly provided on both sides of the box body (1), and the limiting protrusions (9) are respectively fastened inside the multiple elastic steel plates (6).
3. The fixture for producing silicon nitride ceramic balls according to claim 1, characterized in that: The feeding structure includes multiple limiting plates (12), the limiting plates (12) are fixedly installed at the top four corners of the box cover (2), a placement box (13) is provided above the box cover (2), and a plug-in rod (14) is fixedly provided at the bottom four corners of the placement box (13), and one end of the plug-in rod (14) is inserted into the inside of the limiting plate (12). Multiple feeding cylinders (15) are uniformly fixedly provided inside the placement box (13), and multiple conical elastic plates (16) are uniformly fixedly provided at the bottom of the placement box (13). A pushing structure is provided inside the placement box (13).
4. The fixture for producing silicon nitride ceramic balls according to claim 3, characterized in that: The pushing structure includes a push plate (17), which is slidably installed inside the placement box (13) and the push plate (17) is slidably installed inside the feed cylinder (15). Both sides of the placement box (13) are slidably provided with grip plates (18), and the grip plates (18) are fixedly connected to the push plate (17). Both sides of the placement box (13) are fixedly provided with fixing plates (19), and the top of the fixing plate (19) is fixedly provided with a fixing rod (20), and the fixing rod (20) passes through the grip plate (18). A spring (21) is sleeved on the outside of the fixing rod (20).
5. A fixture for producing silicon nitride ceramic balls according to claim 2, characterized in that: The rectangular frame (7) has a groove on its outer side, and the second sealing ring (8) is fitted inside the groove.
6. A fixture for producing silicon nitride ceramic balls according to claim 4, characterized in that: The grip plate (18) has a through hole in the middle, and the fixing rod (20) slides through the through hole.
7. A fixture for producing silicon nitride ceramic balls according to claim 4, characterized in that: The outer side of the feed cylinder (15) is provided with a sliding groove, and the push plate (17) is slidably installed inside the sliding groove.
8. A fixture for producing silicon nitride ceramic balls according to claim 2, characterized in that: The elastic steel plate (6) has a limiting hole inside, and the limiting protrusion (9) engages with the limiting hole.