Multi-cavity ceramic preparation mold

Abstract

The invention relates to the technical field of ceramic preparation, in particular to a multi-cavity ceramic preparation mold. The forming die comprises a forming die body, the forming die body is installed in a workbench, the forming die body comprises an upper die and a lower die, the upper die and the lower die are combined to form a plurality of cavity bodies, the cavity bodies are communicated through circulation channels, control mechanisms are arranged in the circulation channels, and a shape control mechanism is arranged in the lower die. Ceramic raw materials are conveyed into other mold cavity bodies through the circulation channels, in addition, in combination with the inclined state in the circulation channels and the spiral grooves in the circulation channels, in the process that the ceramic raw materials are conveyed through the circulation channels, temperature loss is reduced, and after the ceramic raw materials in the multiple mold cavity bodies are completely injected, the temperature loss is reduced. And the extension rods can block ports of the two circulation channels, so that mutually independent spaces are formed between the multiple cavity bodies and the circulation channels.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic preparation, and specifically, to a multi-cavity ceramic preparation mold. Background Art

[0002] In the field of ceramic preparation, to meet the growing production demands and diverse product requirements, molds are used as key forming tools. For example, plaster molds, with their good water absorption, are commonly used in slip casting; metal molds, with their high strength and wear resistance, perform excellently in dry pressing and other processes. They are each suitable for different ceramic manufacturing processes and product requirements. In recent years, multi-cavity molds have been increasingly widely used in ceramic production. A multi-cavity means that a ceramic preparation mold contains two or more cavities for forming ceramic green bodies. These cavities are independent of each other, usually with the same or similar shapes, and can simultaneously perform the forming operations of multiple ceramic green bodies, greatly improving production efficiency. However, in a multi-cavity mold, to ensure that each cavity can receive sufficient ceramic raw materials, a dedicated runner system is designed. However, during the process of the ceramic raw materials flowing through the runners to multiple cavities, the temperature is extremely likely to decrease due to heat dissipation, which in turn increases the viscosity of the ceramic raw materials. This phenomenon seriously affects the flow uniformity of the raw materials in each cavity, and ultimately leads to differences in the quality, performance, and appearance of the ceramic products among the cavities. In addition, during ceramic forming preparation, the ceramic raw materials in the runners usually form together with the raw materials in the cavities. This makes the ceramic products in multiple cavities connected to each other after forming, bringing great inconvenience to subsequent processing. It not only increases the processing procedures and costs, but also easily damages the ceramic products during the separation process, affecting the yield and quality of the products. In view of this, there is an urgent need for a multi-cavity ceramic preparation mold to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-cavity ceramic preparation mold to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides a multi-cavity ceramic preparation mold, including a mold body. The mold body is installed inside a workbench. The workbench includes a support table and a storage cavity. The support table is a hollow structure. A delivery pipe is installed at the end of the storage cavity. The mold body includes an upper mold and a lower mold. The bottom of the lower mold is fixed to the top of the support table by bolts. When the upper mold and the lower mold are closed, multiple cavity bodies are formed. All the multiple cavity bodies are connected and communicated through a circulation channel. All the multiple circulation channels are formed by the closing of the upper mold and the lower mold. A material conveying pipe is fixedly installed in the middle of the lower mold. The material conveying pipe is communicated with the bottom end of the cavity body in the middle. Control mechanisms are arranged inside multiple said circulation channels. A shape control mechanism is arranged inside the lower mold. The shape control mechanism can assist the lower mold to form a double-layer structure; After the ceramic raw material is conveyed from the material conveying pipe into the cavity body in the middle, it enters other cavity bodies through the circulation channels. During the process of the ceramic raw material flowing inside the circulation channels, the control mechanism can control the temperature of the ceramic raw material. After the ceramic raw material is injected, the shape control mechanism rises and can separate the cavity body from the circulation channels.

[0005] As a further improvement of this technical solution, the control mechanism includes spiral grooves opened on the inner wall of the circulation channels, and the inner wall of the spiral grooves is smooth.

[0006] As a further improvement of this technical solution, multiple said circulation channels are all in an inclined state, and one end of the circulation channel close to the middle cavity body is higher than one end of the circulation channel close to the edge cavity body.

[0007] As a further improvement of this technical solution, the shape control mechanism includes an inner cavity opened inside the lower mold. An inner layer plate is slidably arranged inside the inner cavity, and the outer wall of the inner layer plate fits with the inner wall of the inner cavity.

[0008] As a further improvement of this technical solution, four extension rods are fixedly installed on the surface of one end of the inner layer plate close to the upper mold. Middle holes are opened on the inner walls on both sides of two said circulation channels. Two said circulation channels are communicated with the inner cavity through the middle holes. The four ends of the four extension rods far away from the inner layer plate are respectively inserted into the four middle holes. An adjusting part is installed at the bottom of the inner layer plate, and the adjusting part can drive the inner layer plate to slide inside the inner cavity.

[0009] As a further improvement of this technical solution, the adjusting part includes two threaded holes opened at the bottom of the inner cavity. Threaded support rods are rotatably arranged inside the two threaded holes. The tops of the two threaded support rods are rotatably connected to the bottom of the inner layer plate.

[0010] As a further improvement of this technical solution, the upper mold includes a top mold and a middle mold. Mold seam clamping plates are installed between the top mold and the middle mold and between the middle mold and the lower mold. Clamping modules are fixedly installed at the bottoms of the top mold and the middle mold. Card slots are opened at the tops of the middle mold and the lower mold, and the surface of the card slot fits with the inner wall of the clamping module.

[0011] As a further improvement of this technical solution, adjusting indication rings are fixedly installed on the surfaces of the two threaded support rods, and the adjusting indication rings are used to limit the sliding position of the inner layer plate.

[0012] As a further improvement of the technical solution, sealing covers are laid on the surfaces of the four extension rods, and the sealing covers are made of elastic materials.

[0013] As a further improvement of the technical solution, sealing ring strips are arranged at the openings on the side of the plurality of middle holes close to the circulation channel, and the sealing ring strips are made of elastic materials.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In this multi-cavity ceramic preparation mold, ceramic raw materials are transported to the cavity body in the middle through a delivery pipe, and then, with the help of the circulation channel connecting multiple cavity bodies, the ceramic raw materials are transported to other cavity bodies. During this process, the ceramic raw materials will fill the multiple cavity bodies simultaneously in a steady pressure state. Moreover, combined with the inclined state in the circulation channel and the spiral grooves inside it, the temperature loss of the ceramic raw materials is reduced during the transportation through the circulation channel, thereby maintaining the fluidity of the ceramic raw materials. After the ceramic raw materials in the multiple cavity bodies are injected, the position of the inner layer plate and the extension rods installed on its top can be adjusted through the adjusting member, so that the extension rods can block the ports of the two circulation channels, forming independent spaces between the multiple cavity bodies and the circulation channel. In this way, after the ceramics are formed, they will not adhere to a continuous whole, which brings great convenience to the subsequent processing procedures. At the same time, the inner layer plate will slowly slide to the top of the inner cavity and fit tightly with it, making the lower mold of the whole present a double-layer structure. The double-layer structure of the lower mold can effectively slow down the heat transfer speed, avoid rapid temperature changes, and provide protection for the forming of the lower end of the ceramics. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the mold body of the present invention; Figure 3 is the sectional structural schematic diagram of the mold body of the present invention; Figure 4 is the structural schematic diagram of the closed circulation channel of the present invention; Figure 5 is the state diagram of the transportation of ceramic raw materials of the present invention; Figure 6 is of the present invention Figure 3 structural schematic diagram of part A; Figure 7 is of the present invention Figure 4 structural schematic diagram of part B; Figure 8 is the structural schematic diagram of the opening and closing of the circulation channel of the present invention; Figure 9Cross-sectional side view of the mold body of the present invention; Figure 10 Schematic cross-sectional structure diagram of the lower mold of the present invention.

[0016] The meanings of each label in the figure are as follows: 1. Mold body; 11. Upper mold; 12. Lower mold; 111. Top mold; 112. Middle mold; 13. Mold joint clamping plate; 14. Cavity body; 15. Flow channel; 16. Feeding pipe; 2. Workbench; 21. Support table; 22. Storage cavity; 23. Delivery pipe; 3. Control mechanism; 4. Shape control mechanism; 41. Inner cavity; 42. Inner layer plate; 43. Adjusting member; 44. Middle hole; 45. Extension rod; 431. Threaded support rod; 432. Threaded hole; 5. Card slot; 51. Combining module; 6. Adjustment indicating ring; 7. Sealing cover; 71. Sealing ring strip. Specific implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment, please refer to Figures 1-3As shown in the figure, the purpose of this embodiment is to provide a multi-cavity ceramic preparation mold, which includes a mold body 1. The mold body 1 is installed inside a workbench 2. The workbench 2 includes a support table 21 and a material storage cavity 22. The support table 21 is a hollow structure. A conveying pipe 23 is installed at the end of the material storage cavity 22. The mold body 1 includes an upper mold 11 and a lower mold 12. The bottom of the lower mold 12 is fixed to the top of the support table 21 by bolts. When the upper mold 11 and the lower mold 12 are closed, a plurality of cavity bodies 14 are formed. All the plurality of cavity bodies 14 are connected and communicated through a circulation channel 15. All the plurality of circulation channels 15 are formed by the closing of the upper mold 11 and the lower mold 12. A material conveying pipe 16 is fixedly installed in the middle of the lower mold 12. The material conveying pipe 16 is connected and communicated with the bottom end of the middle cavity body 14. A control mechanism 3 is arranged inside all the plurality of circulation channels 15. A shape control mechanism 4 is arranged inside the lower mold 12. The shape control mechanism 4 can assist the lower mold 12 to form a double-layer structure. After the ceramic raw material is conveyed from the material conveying pipe 16 into the middle cavity body 14, it enters other cavity bodies 14 through the circulation channel 15. During the process of the ceramic raw material flowing inside the circulation channel 15, the control mechanism 3 can control the temperature of the ceramic raw material. After the ceramic raw material is injected, the shape control mechanism 4 is lifted, and the cavity body 14 and the circulation channel 15 can be separated.

[0019] During the process of conveying and flowing the ceramic raw material, it is necessary to control the temperature of the ceramic raw material to reduce the situation of sticking and affecting fluidity caused by temperature changes. First, the specific structure of the control mechanism 3 is disclosed. The control mechanism 3 includes a spiral groove opened on the inner wall of the circulation channel 15, and the inner wall of the spiral groove is a smooth structure.

[0020] All the plurality of circulation channels 15 are in an inclined state. One end of the circulation channel 15 close to the middle cavity body 14 is higher than one end of the circulation channel 15 close to the edge cavity body 14.

[0021] The above-mentioned ceramic raw material is a clay raw material, which is rich in various hydrated aluminosilicate minerals. When the clay is prepared into ceramics and water is added, it can slide and deform freely and can perfectly fill various complex-shaped cavity bodies 14.

[0022] The improvement lies in: Refer to Figure 5It can be seen that under the action of pumping (a pumping pump is used in this process, which is an existing technology and will not be elaborated here), the ceramic raw materials enter the inner part of the middle cavity body 14 through the conveying pipe 23 and the feeding pipe 16. At this time, the temperature of the ceramic raw materials is in a relatively appropriate state. When the ceramic raw materials flow to the two flow channels 15, the ceramic raw materials will enter the flow channels 15 under the action of pressure and be diverted to other cavity bodies 14. When the pressures in each cavity body 14 tend to be similar, filling will start simultaneously until the ceramic raw materials in multiple cavity bodies 14 are filled. This makes the finally formed ceramic products have smaller deviations in terms of size, density, texture, etc., and the product quality is more stable; As Figure 3 shown, the inside of the flow channel 15 is in an inclined state, providing natural power for the flow of the ceramic raw materials, which helps the raw materials to be smoothly transported in the flow channel 15. At the same time, the inside of the flow channel 15 adopts a spiral structure (not shown in the figure). The spiral structure increases the flow path length of the raw materials in the flow channel 15. From the perspective of fluid mechanics, the spiral structure can cause a certain eddy current of the raw materials in the flow channel 15. This eddy current not only helps to evenly distribute the heat inside the raw materials, reduce the situation of local temperature being too low, and reduce the adhesion of the ceramic raw materials, but also can prevent the problem of excessive pressure when the raw materials flow to the side cavity body 14 even when the flow channel 15 is in an inclined state, ensuring the stable filling of the raw materials in each cavity body 14.

[0023] Secondly, the specific structure of the shape control mechanism 4 is disclosed. The shape control mechanism 4 includes an inner cavity 41 opened inside the lower mold 12, and an inner layer plate 42 is slidably arranged inside the inner cavity 41, and the outer wall of the inner layer plate 42 fits with the inner wall of the inner cavity 41.

[0024] One end surface of the inner layer plate 42 close to the upper mold 11 is fixedly installed with four extension rods 45. Middle holes 44 are opened on both inner walls of the two flow channels 15. The two flow channels 15 are communicated with the inner cavity 41 through the middle holes 44. One ends of the four extension rods 45 away from the inner layer plate 42 are respectively inserted into the four middle holes 44. An adjusting member 43 is installed at the bottom of the inner layer plate 42, and the adjusting member 43 can drive the inner layer plate 42 to slide inside the inner cavity 41.

[0025] The adjusting member 43 includes two threaded holes 432 opened at the bottom of the inner cavity 41. Threaded support rods 431 are rotatably arranged inside the two threaded holes 432, and the tops of the two threaded support rods 431 are rotatably connected to the bottom of the inner layer plate 42.

[0026] After the ceramic raw materials in the multiple cavity bodies 14 are all filled, the conveyance of the ceramic raw materials is stopped (a one-way valve can be arranged inside the material conveying pipe 16 to assist in suspending the conveyance of the ceramic raw materials. Using the existing technology, it is not shown in the figure). Subsequently, the two threaded support rods 431 are rotated simultaneously. Refer to Figure 4 and in combination with Figure 7 As shown, based on the principle of the thread, when the threaded support rod 431 rotates, it will move along its own axial direction. With the rotation, the top of the threaded support rod 431 will gradually enter the inner cavity 41. As Figure 8 shown, since the inner layer plate 42 and the four extension rods 45 fixedly installed on its top are associated with the movement of the threaded support rod 431, under the push of the top of the threaded support rod 431 entering the inner cavity 41, the inner layer plate 42 and the extension rods 45 will slide upward together. Finally, the extension rods 45 will extend into the flow channel 15 and separate the two ends of the flow channel 15. In this way, when the ceramic is formed in the cavity body 14, due to the separation of the flow channel 15, the various cavity bodies 14 will not be connected to each other, thus avoiding the situation where the ceramics are integrally connected, which is convenient for subsequent separate treatment and processing of the ceramics.

[0027] Although the extension rods 45 can effectively separate the flow channel 15 and greatly prevent the ceramic raw materials from being overly connected between different cavity bodies 14, during the filling and solidification stages of the ceramic raw materials, there are likely to be some factors resulting in a very small amount of ceramic raw materials being connected at the edges of the cavity bodies 14 or the interfaces of the flow channel 15. However, since the connected part is only a small amount of ceramic, and after forming, the texture at the connected part has no essential difference from the surrounding ceramics, therefore, only a slight grinding method can be used to easily handle it, and at the same time, it will not cause obvious impacts on the main structure and appearance quality of the ceramic itself.

[0028] As Figure 4 shown, when the inner layer plate 42 is lifted to the designated position and fixed, the structure of the lower mold 12 becomes a double-layer structure, that is, the existence of the inner cavity 41 in the middle of the inner layer plate 42. This inner cavity 41 can play a role in temperature regulation during the ceramic forming process. During the forming stage of the ceramic, the stability of the temperature plays a decisive role in the quality of the final product. If the temperature changes suddenly, the stress distribution inside the ceramic blank will become uneven, which may lead to serious quality problems such as cracking and deformation of the ceramic. At this time, the double-layer structure formed by the lower mold 12 can buffer the heat transfer. The heat transfer coefficient in the inner cavity 41 is relatively low, which can effectively slow down the heat transfer speed. When the external temperature changes, whether it is heating or cooling, the heat needs to be buffered by the inner cavity 41 before it can be transferred to the ceramic blank, which makes the temperature environment at the bottom of the ceramic relatively stable and will not be severely affected by the sudden change of the external temperature; In such a stable temperature environment, the physical and chemical changes of the ceramic bottom can occur uniformly during the forming process, and its crystallization process, shrinkage process, etc. can all proceed orderly. This not only helps to ensure the shape accuracy of the ceramic bottom, but also improves the uniformity of its internal structure, thus significantly enhancing the overall forming effect of the ceramic and providing a strong guarantee for obtaining high-quality ceramic products.

[0029] To further ensure the fitting accuracy between various parts, therefore, the upper mold 11 includes a top mold 111 and a middle mold 112. Mold seam clamping plates 13 are installed between the top mold 111 and the middle mold 112 and between the middle mold 112 and the lower mold 12. Clamping modules 51 are fixedly installed at the bottoms of the top mold 111 and the middle mold 112, and clamping grooves 5 are provided at the tops of the middle mold 112 and the lower mold 12. The surface of the clamping groove 5 fits with the inner wall of the clamping module 51.

[0030] The improvement lies in: Refer to Figure 9 and in combination with Figure 10 As shown, the upper mold 11 is divided into a top mold 111 and a middle mold 112, mainly to optimize the demolding process. When the formed ceramic needs to be taken out of the mold, such a layered structure can provide more operation convenience and reduce the demolding difficulty. The setting of the clamping module 51 makes the fitting between the top mold 111 and the middle mold 112, and between the middle mold 112 and the lower mold 12 more precise. When the clamping module 51 is inserted into the clamping groove 5, the two can cooperate closely to ensure the accuracy of mold assembly. This helps to ensure the shape accuracy of the green body during the ceramic forming process, reduce defective products caused by mold assembly errors, and at the same time, can ensure the overall stability of the mold during mold closing, preventing the ceramic raw material from overflowing from the mold gap under high pressure, thus ensuring the quality of the finally formed ceramic.

[0031] Considering the sliding conditions of the inner layer plate 42 and the extension rod 45, adjusting indicating rings 6 are fixedly installed on the surfaces of the two threaded support rods 431. The adjusting indicating ring 6 is used to limit the sliding position of the inner layer plate 42.

[0032] The improvement lies in: Refer to Figure 5 As shown, when the staff rotates the threaded support rod 431, the adjusting indicating ring 6 will move synchronously. When the top of the adjusting indicating ring 6 fits with the bottom of the lower mold 12, this specific position corresponds to the inner layer plate 42 exactly fitting with the top of the inner cavity 41. This design enables the operator to accurately judge whether the inner layer plate 42 has reached the predetermined position by simply observing the relative position relationship between the adjusting indicating ring 6 and the bottom of the lower mold 12, ensuring the consistency and stability of the ceramic forming effect.

[0033] To ensure effective isolation between the cavity body 14 and the flow channel 15, therefore, sealing covers 7 are laid on the surfaces of the four extension rods 45. The sealing cover 7 is made of elastic material.

[0034] Sealing ring strips 71 are provided at the openings on one side of the plurality of middle holes 44 close to the flow passage 15, and the sealing ring strips 71 are made of elastic material.

[0035] The improvement lies in: Refer to Figure 6 and in combination with Figure 8 As shown, sealing covers 7 are laid on the surfaces of the four extension rods 45, and sealing ring strips 71 are provided at the openings on one side of the plurality of middle holes 44 close to the flow passage 15. Both the sealing covers 7 and the sealing ring strips 71 are made of elastic material (such as rubber), so that the sealing covers 7 and the sealing ring strips 71 can closely fit the contact surface when being pressed, and can return to their original shapes after the force is removed. When the extension rods 45 are inserted into the flow passage 15 to perform the partition operation, even if the whole flow passage 15 is in an inclined state, the sealing covers 7 can adaptively adjust under the pressure of the channel wall by virtue of their elasticity, closely fit all the gaps, prevent the leakage of ceramic raw materials, thereby ensuring that the partition effect between the flow passage 15 and the cavity body 14 is not affected, and jointly constructing a stable sealing system with the sealing ring strips 71, providing a solid support for the precision and independence of ceramic forming. At the same time, the interaction between the sealing covers 7 and the sealing ring strips 71 can improve the sealing performance of the flow passage 15 and avoid the situation that ceramic raw materials enter the inner cavity 41 from the middle holes 44.

[0036] In summary, the working principle of this solution is as follows: First, under the action of pumping, the ceramic raw materials enter the inner part of the middle cavity body 14 through the conveying pipe 23 and the feeding pipe 16. At this time, the temperature of the ceramic raw materials is in a relatively appropriate state. When the ceramic raw materials flow to the two flow passages 15, the ceramic raw materials will enter the flow passages 15 under the action of pressure and be diverted to other cavity bodies 14. When the pressures in each cavity body 14 tend to be similar, filling will start simultaneously until the ceramic raw materials in the plurality of cavity bodies 14 are filled. Among them, the inside of the flow passage 15 is in an inclined state, which provides natural power for the flow of the ceramic raw materials. At the same time, the inside of the flow passage 15 adopts a spiral structure. The spiral structure increases the flow path length of the raw materials in the flow passage 15. The spiral structure can make the raw materials generate a certain eddy current in the flow passage 15. This eddy current not only helps to evenly distribute the heat inside the raw materials, reduce the situation of too low local temperature, but also reduce the adhesion of ceramic raw materials; After the ceramic raw materials in the multiple cavity bodies 14 are filled up, the conveyance of the ceramic raw materials is stopped. Subsequently, the two threaded support rods 431 are rotated simultaneously. The threaded support rods 431 utilize the principle of the thread. When it rotates, it will move along its own axial direction. With the rotation, the top of the threaded support rod 431 will gradually enter the inner cavity 41. Since the inner layer plate 42 and the four extension rods 45 fixedly installed on its top are associated with the movement of the threaded support rod 431, under the push of the top of the threaded support rod 431 entering the inner cavity 41, the inner layer plate 42 and the extension rods 45 will slide upward together. Finally, the extension rods 45 will extend into the flow-through channel 15 and separate the two ends of the flow-through channel 15. In this way, when the ceramic is formed in the cavity body 14, due to the separation of the flow-through channel 15, the cavity bodies 14 do not connect with each other, thus avoiding the situation that the ceramics are integrally connected together, which is convenient for subsequent separate treatment and processing of the ceramics.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A multi-cavity ceramic preparation mold, including a mold body (1), the mold body (1) is installed inside a workbench (2), and it is characterized in that: The workbench (2) includes a support table (21) and a material storage cavity (22). The support table (21) has a hollow structure. A conveying pipe (23) is installed at the end of the material storage cavity (22) by extension. The mold body (1) includes an upper mold (11) and a lower mold (12). The bottom of the lower mold (12) is fixed to the top of the support table (21) by bolts. When the upper mold (11) and the lower mold (12) are closed, a plurality of cavity bodies (14) are formed. All the plurality of cavity bodies (14) are connected and communicated through a circulation channel (15). All the plurality of circulation channels (15) are formed by the closing of the upper mold (11) and the lower mold (12). A material conveying pipe (16) is fixedly installed in the middle of the lower mold (12). The material conveying pipe (16) is connected and communicated with the bottom end of the middle cavity body (14). A control mechanism (3) is arranged inside all the plurality of circulation channels (15). A shape control mechanism (4) is arranged inside the lower mold (12). The shape control mechanism (4) can assist the lower mold (12) to form a double-layer structure. After the ceramic raw material is conveyed from the material conveying pipe (16) into the middle cavity body (14), it enters other cavity bodies (14) through the circulation channel (15). During the process of the ceramic raw material flowing inside the circulation channel (15), the control mechanism (3) can control the temperature of the ceramic raw material. After the injection of the ceramic raw material is completed, the shape control mechanism (4) rises and can separate the cavity body (14) from the circulation channel (15).

2. The multi-cavity ceramic preparation mold according to claim 1, wherein: The control mechanism (3) includes a spiral groove opened on the inner wall of the circulation channel (15). The inner wall of the spiral groove has a smooth structure.

3. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: All the plurality of circulation channels (15) are in an inclined state. One end of the circulation channel (15) close to the middle cavity body (14) is higher than one end of the circulation channel (15) close to the edge cavity body (14).

4. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: The shape control mechanism (4) includes an inner cavity (41) opened inside the lower mold (12). An inner layer plate (42) is slidably arranged inside the inner cavity (41). The outer wall of the inner layer plate (42) fits with the inner wall of the inner cavity (41).

5. The multi-cavity ceramic preparation mold according to claim 4, characterized in that: Four extension rods (45) are fixedly installed on the surface of one end of the inner layer plate (42) close to the upper mold (11). Middle holes (44) are opened on the inner walls on both sides of the two circulation channels (15). The two circulation channels (15) are connected and communicated with the inner cavity (41) through the middle holes (44). One ends of the four extension rods (45) far away from the inner layer plate (42) are respectively inserted into the four middle holes (44). An adjusting member (43) is installed at the bottom of the inner layer plate (42). The adjusting member (43) can drive the inner layer plate (42) to slide inside the inner cavity (41).

6. The multi-cavity ceramic preparation mold according to claim 5, characterized in that: The adjusting member (43) includes two threaded holes (432) opened at the bottom of the inner cavity (41). Threaded support rods (431) are rotatably arranged inside the two threaded holes (432). The tops of the two threaded support rods (431) are rotatably connected to the bottom of the inner layer plate (42).

7. The multi-cavity ceramic preparation mold according to claim 1, wherein: The upper die (11) includes a top die (111) and a middle die (112). Die seam clamping plates (13) are installed between the top die (111) and the middle die (112) and between the middle die (112) and the lower die (12). Composite die blocks (51) are fixedly installed at the bottoms of the top die (111) and the middle die (112). Card slots (5) are formed at the tops of the middle die (112) and the lower die (12), and the surfaces of the card slots (5) are in fit with the inner walls of the composite die blocks (51).

8. The multi-cavity ceramic preparation mold according to claim 6, characterized in that: Adjustment indicating rings (6) are fixedly installed on the surfaces of the two threaded support rods (431), and the adjustment indicating rings (6) are used to limit the sliding position of the inner layer plate (42).

9. The multi-cavity ceramic preparation mold according to claim 5, characterized in that: Sealing covers (7) made of elastic materials are laid on the surfaces of the four extension rods (45).

10. The multi-cavity ceramic preparation mold according to claim 5, characterized in that: Sealing ring strips (71) made of elastic materials are arranged at the openings on one side of the plurality of middle holes (44) close to the flow passage (15).

Images