Gel injection molding device for batch production of silicon carbide ceramic plates
By designing a gel injection molding device for silicon carbide ceramic plates, the bottom-up casting method and partition limit structure are adopted, the problem of mass production of large-size silicon carbide ceramic plates is solved, and uniform molding and efficient production with low defects are achieved.
Patent Information
- Application Number
- CN202422262680.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The prior art is difficult to mass-produce large-size silicon carbide ceramic plates, with high molding costs and easy to crack in layers, and grouting-molded products are prone to warping and deformation, which cannot meet market demand.
A gel injection molding device for mass production of silicon carbide ceramic plates is designed. Through the combination of molding boxes, feed boxes and cutting boards, the bottom-up casting method is adopted to achieve uniform molding and convenient mold release of the blank using structures such as partitions and limiting grooves.
It realizes uniform molding and low bubble defects of large-size silicon carbide ceramic plates, which are simple to operate, and improves production efficiency and product quality.
Smart Images
Figure CN223085067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silicon carbide ceramic plate production, in particular to a gel-casting molding device for batch production of silicon carbide ceramic plates. Background Art
[0002] Silicon carbide ceramic plates have a very wide range of application fields, mainly including aerospace, automotive industry, electronics industry, energy field, building materials industry, chemical industry, high refractory materials field, energy environmental protection, chemical machinery, semiconductors, etc. At present, the main preparation methods of silicon carbide plates produced on a large scale in the market are die pressing molding method and slip casting molding method, but both have great defects. Die pressing molding has problems such as high cost and inability to prepare large-size plates; slip casting molding also has problems such as easy delamination and cracking of products, warping and deformation, etc., thus making it impossible to prepare large-size silicon carbide plates.
[0003] Gel-casting molding is a near-net-shape molding method. It uses a network gel formed by in-situ polymerization of organic monomers to fix ceramic particles in a colloidal system, thereby in-situ forming a ceramic green body with complex shapes: through the in-situ curing process, gel-casting molding can obtain a green body with good micro-uniformity and certain strength. This method ensures the composition and structure uniformity of the formed green body; the amount of organic matter used in the preparation process is reduced, thereby reducing the impact on the environment; the ceramic powder slurry prepared through electrostatic stabilization or steric stabilization mechanism can be cured and formed without changing the position of powder particles, thereby precisely controlling the shape and size and facilitating subsequent machining; these advantages make gel-casting molding have broad application prospects in many fields, especially in the preparation of materials that require high strength and uniformity.
[0004] With the increasing demand for large-size silicon carbide ceramic plates, batch preparation of large-size ceramic plates by gel-casting molding is an urgent problem to be solved in the current market. Summary of the Utility Model
[0005] The utility model provides a gel-casting molding device for batch production of silicon carbide ceramic plates to achieve the purpose of batch preparation of large-size ceramic plates by gel-casting molding.
[0006] To solve the above problems, the gel-casting molding device for batch production of silicon carbide ceramic plates provided by the utility model adopts the following technical solutions:
[0007] The gel-casting forming device for batch production of silicon carbide ceramic plates includes a forming box, a feeding box, and a cutting plate. The length direction of the forming box is defined as the front-back direction. Inside the forming box, a plurality of partition plates are arranged at intervals in the left-right direction to divide the space inside the forming box into multiple cavities for forming silicon carbide ceramic plates. The distance between any two adjacent partition plates is the same as the thickness of the silicon carbide ceramic plate to be formed. The feeding box is arranged on the front side of the forming box and has an inner cavity for communicating with each cavity. The cutting plate is movably assembled in the up-down direction between the feeding box and the forming box to connect and separate the inner cavity of the feeding box from each cavity.
[0008] The beneficial effects are as follows: When the gel-casting forming device for batch production of silicon carbide ceramic plates of the present utility model is in use, first, lower the cutting plate to separate the inner cavity of the forming box from the inner cavity of the feeding box. Then, add raw materials into the feeding box. As the liquid level of the raw materials in the feeding box rises, slowly raise the cutting plate to form a potential energy difference. Finally, when the liquid level in the forming box reaches a certain height, lower the cutting plate to separate and isolate the inner cavity of the forming box from the inner cavity of the feeding box. After the blank is cured, use the partition plates to peel off the blanks one by one to complete the demolding. When the gel-casting forming device for batch production of silicon carbide ceramic plates of the present utility model is in use, it has a simple structure and is convenient to operate. At the same time, by pouring the raw materials into the forming box in a bottom-up pouring method, the structure of the blank is uniform and there are fewer defects such as bubbles.
[0009] Further, the forming box includes a bottom wall, a left side wall provided on the left side of the bottom wall, a right side wall provided on the right side of the bottom wall, and a rear side wall provided on the rear side of the bottom wall, so that the front side and the top of the forming box are open.
[0010] Further, the feeding box includes a bottom plate, a left side plate provided on the left side of the bottom plate, and a right side plate provided on the right side of the bottom plate. The left side plate and the right side plate are both triangular plates, and the bottom plate is an inclined surface arranged obliquely downward from front to back. The rear side and the top of the feeding box are open so that the feeding box and the forming box are communicated.
[0011] Beneficial effect: When pouring raw materials into the feeding box, pour them along the inclined surface to prevent bubbles from being generated during the pouring process of the raw materials.
[0012] Further, a plurality of pressing plates are provided at the upper end of the forming box. The pressing plates are arranged at intervals in the front-back direction. A plurality of clamping grooves are formed on the lower end surface of the pressing plates. Each clamping groove corresponds to each partition plate one by one, and the partition plate is clamped in the corresponding clamping groove.
[0013] Beneficial effect: Avoid the shaking of the partition plates. At this time, the partition plates only need to be placed in the forming box, which is convenient for the disassembly and installation of the partition plates, with simple operation, convenience and speed.
[0014] Further, the partition plate is detachably connected inside the forming box.
[0015] Beneficial effects: Facilitate disassembly and demolding.
[0016] Furthermore, a plurality of limiting grooves are formed on the front side of the rear box wall of the forming box, and each limiting groove corresponds to and is adapted to each partition board, and the partition board is clamped in the corresponding limiting groove.
[0017] Beneficial effects: Further improve the stability of the partition board.
[0018] Furthermore, convex blocks protruding towards the inner cavity of the forming box are provided at the front ends of the box walls on the left and right sides of the forming box, and a sliding groove is formed between the convex blocks and the pressing plate at the frontmost side, and the left and right ends of the cutting plate are slidably assembled in the two sliding grooves.
[0019] Beneficial effects: Simple structure, facilitating the lifting of the cutting plate.
[0020] Furthermore, a cover plate is further connected to the cutting plate, and the cover plate is adapted to the upper end surface of the feeding box to seal the feeding box.
[0021] Furthermore, support steps are formed at the rear sides of the side plates on the left and right sides of the feeding box, and a baffle is provided on the two support steps, and the rear side surface of the baffle is closely attached to the front side surface of the cutting plate.
[0022] Beneficial effects: Improve the stability of the cutting plate during lifting.
[0023] Furthermore, the distance between any two adjacent partition boards is equal.
[0024] Beneficial effects: Generate a large number of silicon carbide ceramic plates of the same size at one time. Description of the Drawings
[0025] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understood. In the drawings, several embodiments of the present invention are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0026] Figure 1 is a schematic structural diagram of a gel-casting molding device for mass production of silicon carbide ceramic plates according to the present invention;
[0027] Figure 2 is Figure 1 an enlarged schematic view of part A in
[0028] Figure 3 is Figure 1 an enlarged schematic view of part B in
[0029] Figure 4Schematic structural diagram of the gel-casting forming device for batch production of silicon carbide ceramic plates of the present utility model (the baffle is not shown);
[0030] Figure 5 For Figure 4 Enlarged schematic view at position C in the figure.
[0031] Explanation of reference numerals:
[0032] 1. Forming box; 2. Feeding box; 3. Cutting board; 4. Partition board; 5. Pressing plate; 6. Card slot; 7. Protrusion; 8. Slide groove; 9. Cover plate; 10. Support step; 11. Baffle; 12. Limit groove. Specific embodiments
[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.
[0034] The quantity of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning.
[0035] Next, the principles and spirits of the present utility model will be elaborated in detail with reference to several representative embodiments of the present utility model.
[0036] Embodiment 1 of the gel-casting forming device for batch production of silicon carbide ceramic plates provided by the present utility model:
[0037] As Figures 1 to 5 shown, the gel-casting forming device for batch production of silicon carbide ceramic plates of the present utility model includes a forming box 1, a feeding box 2 and a cutting board 3. The length direction of the forming box 1 is defined as the front-rear direction.
[0038] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the forming box 1 includes a bottom wall, a left side wall provided on the left side of the bottom wall, a right side wall provided on the right side of the bottom wall, and a rear side wall provided on the rear side of the bottom wall, so that the front side and the top of the forming box are open. A plurality of limit grooves 12 are arranged at intervals in the left-right direction on the front side surface of the rear side wall of the forming box 1. A partition board 4 is provided in each limit groove 12. The distance between any two adjacent partition boards 4 is the same as the thickness of the silicon carbide ceramic plate to be formed. The distances between any two adjacent partition boards are equal.
[0039] At the upper end of the forming box 1, there are multiple pressing plates 5 arranged at intervals in the front-back direction. Each pressing plate 5 is provided with a plurality of card slots 6 on its lower end surface. Each card slot 6 corresponds to each partition plate 4 one by one, and the partition plate 4 is stuck in the corresponding card slot 6.
[0040] At the front ends of the box walls on the left and right sides of the forming box 1, there are convex blocks 7 protruding towards the inner cavity of the forming box 1. A chute 8 is formed between the convex block 7 and the pressing plate 5 at the foremost side.
[0041] The feeding box 2 is arranged on the front side of the forming box 1. The feeding box 2 includes a bottom plate, a left side plate arranged on the left side of the bottom plate, and a right side plate arranged on the right side of the bottom plate. Both the left side plate and the right side plate are right-angled triangular plates. The bottom plate is an inclined plane arranged to slope downward from front to back. The rear side and the top of the feeding box 2 are open to enable the feeding box 2 to communicate with the forming box 1.
[0042] As Figure 4 and Figure 5 shown, support steps 10 are provided at the rear sides of the side plates on the left and right sides of the feeding box 2. A baffle 11 is supported and fixed on the two support steps 10. The rear side surface of the baffle 11 is correspondingly arranged in the vertical direction with the front groove wall of the chute 8.
[0043] The left and right ends of the cutting plate 3 are slidably assembled in the two chutes 8. A cover plate 9 is also connected to the cutting plate 3. The cover plate 9 is adapted to the upper end surface of the feeding box 2 to seal the feeding box 2. A hand control is also provided on the cutting plate 3 to facilitate the staff to hold the cutting plate 3 for lifting and lowering.
[0044] When the gel injection molding device for batch production of silicon carbide ceramic plates of the present utility model is in use, first, the cutting plate 3 is lowered to separate the inner cavity of the forming box 1 from the inner cavity of the feeding box 2. Then, raw materials are added into the feeding box 2. As the liquid level of the raw materials in the feeding box 2 rises, the cutting plate 3 is slowly lifted to form a potential energy difference. Finally, when the liquid level in the forming box 1 reaches a certain height, the cutting plate 3 is lowered to separate and isolate the inner cavity of the forming box 1 from the inner cavity of the feeding box 2. After the blank body is cured, the partition plates 4 are used to peel off the blank bodies one by one to complete the demolding.
[0045] When the gel injection molding device for batch production of silicon carbide ceramic plates of the present utility model is in use, the structure is simple and the operation is convenient. At the same time, the raw materials are added into the forming box by the pouring method from bottom to top, and the blank body has a uniform structure and fewer defects such as air bubbles.
[0046] Embodiment 2 of the gel injection molding device for batch production of silicon carbide ceramic plates provided by the present utility model: The main difference from Embodiment 1 is that in Embodiment 1, at the front ends of the box walls on the left and right sides of the forming box, there are convex blocks protruding towards the inner cavity of the forming box. A chute is formed between the convex block and the pressing plate at the foremost side. The left and right ends of the cutting plate are slidably assembled in the two chutes.
[0047] In this embodiment, sliding grooves are formed on the opposite surfaces of the front ends of the box walls on the left and right sides of the forming box, and the cutting plate is slidably assembled in the sliding grooves.
[0048] Embodiment 3 of the gel-casting molding device for batch production of silicon carbide ceramic plates provided by the present utility model: The main difference from Embodiment 1 is that in Embodiment 1, a cover plate is further connected to the cutting plate, and the cover plate is adapted to the upper end surface of the feeding box to seal the feeding box.
[0049] In this embodiment, the cover plate is not connected to the cutting plate, and at this time, the cover plate covers the feeding box.
[0050] Embodiment 4 of the gel-casting molding device for batch production of silicon carbide ceramic plates provided by the present utility model: The main difference from Embodiment 1 is that in Embodiment 1, the side walls on the left and right sides of the feeding box are both triangular plates, and the front box wall of the feeding box is an inclined surface arranged obliquely downward from front to back.
[0051] In this embodiment, the side walls on the left and right sides of the feeding box are both right trapezoids, and the front box wall of the feeding box is an inclined surface arranged obliquely downward from front to back.
[0052] Embodiment 5 of the gel-casting molding device for batch production of silicon carbide ceramic plates provided by the present utility model: The main difference from Embodiment 1 is that in Embodiment 1, the distance between any two adjacent partition plates is equal.
[0053] In this embodiment, the distance between at least two pairs of any two adjacent partition plates is equal.
[0054] According to the above description of this specification, those skilled in the art can also understand the following terms used, such as the terms indicating the orientation or positional relationship, such as "upper", "lower", "front", "rear", "left", "right", etc., are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms indicating the orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present utility model.
[0055] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications within the scope of the technical solution of the present invention to equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
[0056] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.
Claims
1. A gel-casting molding device for batch production of silicon carbide ceramic plates, characterized in that, It includes a forming box, a feeding box and a cutting plate. The length direction of the forming box is defined as the front-back direction; Inside the forming box, a plurality of partition plates are arranged at intervals in the left-right direction to divide the space inside the forming box into multiple cavities for forming silicon carbide ceramic plates. The distance between any two adjacent partition plates is the same as the thickness of the silicon carbide ceramic plate to be formed. The feeding box is arranged on the front side of the forming box and has an inner cavity for communicating with each cavity. The cutting plate is movably assembled in the vertical direction between the feeding box and the forming box to connect and separate the inner cavity of the feeding box from each cavity.
2. The gel-casting molding device for the batch production of silicon carbide ceramic plates according to claim 1, characterized in that, The forming box includes a bottom wall, a left side wall arranged on the left side of the bottom wall, a right side wall arranged on the right side of the bottom wall, and a rear side wall arranged on the rear side of the bottom wall, so that the front side and the top of the forming box are open.
3. The gel casting molding device for the batch production of silicon carbide ceramic plates according to claim 2, characterized in that, The feeding box includes a bottom plate, a left side plate arranged on the left side of the bottom plate, and a right side plate arranged on the right side of the bottom plate. The left side plate and the right side plate are both triangular plates. The bottom plate is an inclined plane arranged to slope downward from front to back. The rear side and the top of the feeding box are open so that the feeding box and the forming box are connected.
4. The gel-casting forming device for the batch production of silicon carbide ceramic plates according to claim 3, characterized in that, A plurality of pressing plates are arranged at the upper end of the forming box. The pressing plates are arranged at intervals in the front-back direction. A plurality of clamping grooves are formed on the lower end surface of the pressing plates. Each clamping groove corresponds to one of the partition plates, and the partition plate is clamped in the corresponding clamping groove.
5. The gel casting molding device for the batch production of silicon carbide ceramic plates according to claim 4, characterized in that, The partition plate is detachably connected inside the forming box.
6. The gel casting molding device for the batch production of silicon carbide ceramic plates according to claim 5, characterized in that, A plurality of limiting grooves are formed on the front side surface of the rear box wall of the forming box. Each limiting groove corresponds to one of the partition plates and is adapted to it. The partition plate is clamped in the corresponding limiting groove.
7. The gel-casting forming device for batch production of silicon carbide ceramic plates according to claim 6, characterized in that, At the front ends of the box walls on the left and right sides of the forming box, there are convex blocks protruding towards the inner cavity of the forming box. A sliding groove is formed between the convex blocks and the pressing plate at the frontmost side. The left and right ends of the cutting plate are slidably assembled in the two sliding grooves.
8. The gel-casting forming device for the batch production of silicon carbide ceramic plates according to claim 7, characterized in that, A cover plate is also connected to the cutting plate. The cover plate is adapted to the upper end surface of the feeding box to seal the feeding box.
9. The gel-casting forming device for the batch production of silicon carbide ceramic plates according to any one of claims 1-8, characterized in that, Support steps are formed on the rear sides of the side plates on the left and right sides of the feeding box. A baffle is arranged on the two support steps. The rear side surface of the baffle is closely attached to the front side surface of the cutting plate.
10. The gel-casting molding device for the batch production of silicon carbide ceramic plates according to any one of claims 1-8, characterized in that, The distance between any two adjacent partition plates is equal.