Multi-cavity ceramic preparation mold

Abstract

The present application relates to the technical field of ceramic preparation, in particular to a multi-cavity ceramic preparation mold. The mold includes a mold body, which is installed in the interior of a workbench. The mold body includes an upper mold and a lower mold. The upper mold and the lower mold are combined to form a plurality of cavity bodies. The plurality of cavity bodies are connected through flow channels. The plurality of flow channels are provided with control mechanisms. The lower mold is provided with a shape control mechanism. The ceramic raw materials are delivered to other cavity bodies through the flow channels. In combination with the inclined state of the flow channels and the spiral grooves in the flow channels, the ceramic raw materials reduce temperature loss during delivery through the flow channels. After the ceramic raw materials in the plurality of cavity bodies are injected, the extension rods can block the ports of the two flow channels, so that the plurality of cavity bodies and the flow channels form independent spaces.

Description

Technical Field

[0001] This invention relates to the field of ceramic preparation technology, and more specifically, to a multi-cavity ceramic preparation mold. Background Technology

[0002] In the field of ceramic preparation, in order to meet the growing production demand and diversified product requirements, molds are used as key forming tools. For example, plaster molds are often used for slip casting due to their good water absorption, while metal molds perform well in dry pressing and other processes due to their high strength and wear resistance. They are each adapted to different ceramic manufacturing processes and product requirements.

[0003] In recent years, multi-cavity molds have been used more and more widely in ceramic production. A multi-cavity mold contains two or more cavities for forming ceramic blanks. These cavities are independent of each other and usually have the same or similar shapes. They can perform the forming operation of multiple ceramic blanks at the same time, which greatly improves production efficiency.

[0004] However, in multi-cavity molds, in order to ensure that each cavity can get enough ceramic raw material, a special flow channel system is designed. However, during the process of the ceramic raw material flowing through the flow channel into multiple cavities, the temperature is easily reduced due to heat dispersion, which in turn increases the viscosity of the ceramic raw material. This phenomenon seriously affects the uniformity of the flow of the raw material in each cavity, and ultimately leads to differences in the quality, performance and appearance of the ceramic products in each cavity.

[0005] In addition, during ceramic molding, the ceramic raw materials in the flow channel are usually molded together with the raw materials in the cavity. This results in the ceramic finished products in multiple cavities being interconnected after molding, which causes great inconvenience to subsequent processing. It not only increases the processing steps and costs, but also easily damages the ceramic finished products during separation, affecting the yield and quality of the products.

[0006] Therefore, there is an urgent need for a multi-cavity ceramic fabrication mold to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-cavity ceramic preparation mold to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention aims to provide a multi-cavity ceramic preparation mold, comprising a mold body, wherein the mold body is installed inside a worktable, the worktable includes a support platform and a storage cavity, the support platform is a hollow structure, and a conveying pipe is extended from 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 platform by bolts, and the upper mold and the lower mold are joined together to form multiple cavity bodies, which are connected by flow channels, and the multiple flow channels are formed by the joining of the upper mold and the lower mold;

[0009] A material conveying pipe is fixedly installed in the middle of the lower mold. The material conveying pipe is connected to the bottom end of the cavity body in the middle. A control mechanism is provided inside the multiple flow channels. A shape control mechanism is provided inside the lower mold. The shape control mechanism can assist the lower mold in forming a double-layer structure.

[0010] After the ceramic raw material is transported from the conveying pipe to the central cavity body, it enters other cavity bodies through the flow channel. During the flow of the ceramic raw material in the flow channel, the control mechanism can control the temperature of the ceramic raw material. After the ceramic raw material is injected, the shaping mechanism is raised to separate the cavity body from the flow channel.

[0011] As a further improvement to this technical solution, the control mechanism includes a spiral groove formed on the inner wall of the flow channel, and the inner wall of the spiral groove has a smooth structure.

[0012] As a further improvement to this technical solution, all of the multiple flow channels are inclined, with the end of the flow channel near the central cavity body being higher than the end of the flow channel near the edge cavity body.

[0013] As a further improvement to this technical solution, the shaping mechanism includes an inner cavity opened inside the lower mold, an inner layer plate is slidably provided inside the inner cavity, and the outer wall of the inner layer plate is in contact with the inner wall of the inner cavity.

[0014] As a further improvement to this technical solution, four extension rods are fixedly installed on the surface of the inner layer plate near the upper mold. The inner walls on both sides of the two flow channels are provided with central holes. The two flow channels are connected to the inner cavity through the central holes. The ends of the four extension rods away from the inner layer plate are respectively inserted into the four central holes. An adjusting component is installed at the bottom of the inner layer plate. The adjusting component can drive the inner layer plate to slide inside the inner cavity.

[0015] As a further improvement to this technical solution, the adjusting component includes two threaded holes opened at the bottom of the inner cavity, and threaded support rods are rotatably provided inside the two threaded holes. The tops of the two threaded support rods are rotatably connected to the bottom of the inner layer plate.

[0016] As a further improvement to 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. A connecting module is fixedly installed at the bottom of the top mold and the middle mold. A slot is opened at the top of the middle mold and the lower mold, and the surface of the slot is in contact with the inner wall of the connecting module.

[0017] As a further improvement to this technical solution, an adjustment indicator ring is fixedly installed on the surface of both threaded support rods. The adjustment indicator ring is used to limit the sliding position of the inner layer plate.

[0018] As a further improvement to this technical solution, the surfaces of the four extension rods are covered with sealing covers, which are made of elastic material.

[0019] As a further improvement to this technical solution, a sealing ring is provided at the opening of each of the central holes near the flow channel, and the sealing ring is made of elastic material.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] In this multi-cavity ceramic preparation mold, ceramic raw materials are transported to the central cavity body through a conveying pipe, and then transported to other cavity bodies through a flow channel connecting multiple cavity bodies. During this process, the ceramic raw materials are simultaneously filled into multiple cavity bodies in a stable pressure state. Furthermore, the inclined state of the flow channel and its internal spiral grooves reduce the temperature loss of the ceramic raw materials during the transport process through the flow channel, thereby maintaining the fluidity of the ceramic raw materials.

[0022] After the ceramic raw materials are injected into the multiple cavity bodies, the position of the inner layer plate and the extension rod installed on its top can be adjusted by the adjustment component, so that the extension rod can block the ports of the two flow channels, so that the multiple cavity bodies and the flow channels form independent spaces. In this way, after the ceramic is formed, it will not stick together into a continuous whole, which brings great convenience to the subsequent processing steps.

[0023] At the same time, the inner plate will slowly slide to the top of the inner cavity and fit tightly with it, so that the lower mold presents a double-layer structure. The double-layer structure of the lower mold can effectively slow down the heat transfer rate, avoid rapid temperature changes, and protect the forming of the lower end of the ceramic. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the mold body structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the mold body of the present invention;

[0027] Figure 4 This is a schematic diagram of the closed flow channel structure of the present invention;

[0028] Figure 5 This is a diagram showing the ceramic raw material conveying process of the present invention.

[0029] Figure 6 For the present invention Figure 3 A schematic diagram of the structure at point A;

[0030] Figure 7 For the present invention Figure 4 A schematic diagram of the structure at point B;

[0031] Figure 8 This is a schematic diagram of the opening and closing structure of the flow channel of the present invention;

[0032] Figure 9 This is a sectional side view of the mold body of the present invention;

[0033] Figure 10 This is a schematic diagram of the lower mold section structure of the present invention.

[0034] The meanings of the labels in the diagram are as follows:

[0035] 1. Mold body; 11. Upper mold; 12. Lower mold; 111. Top mold; 112. Middle mold; 13. Mold seam retainer; 14. Cavity body; 15. Flow channel; 16. Material conveying pipe;

[0036] 2. Workbench; 21. Support platform; 22. Storage chamber; 23. Conveying pipe;

[0037] 3. Control mechanism; 4. Shape control mechanism; 41. Inner cavity; 42. Inner layer plate; 43. Adjusting component; 44. Central hole; 45. Extension rod; 431. Threaded support rod; 432. Threaded hole;

[0038] 5. Card slot; 51. Assembly module;

[0039] 6. Adjust the indicator ring;

[0040] 7. Sealing cover; 71. Sealing ring. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] For examples, please refer to Figures 1-3 As shown, the purpose of this embodiment is to provide a multi-cavity ceramic preparation mold, including a mold body 1, which is installed inside a worktable 2. The worktable 2 includes a support platform 21 and a storage cavity 22. The support platform 21 has a hollow structure, and a conveying pipe 23 extends from the end of the 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 platform 21 by bolts. The upper mold 11 and the lower mold 12 are closed to form multiple cavity bodies 14. The multiple cavity bodies 14 are connected by flow channels 15. The multiple flow channels 15 are all 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 mold, and the material conveying pipe 16 is connected to the bottom end of the cavity body 14 in the middle. A control mechanism 3 is set inside the multiple flow channels 15. A shaping mechanism 4 is set inside the lower mold 12. The shaping mechanism 4 can assist the lower mold 12 in forming a double-layer structure. After the ceramic raw material is conveyed from the material conveying pipe 16 to the cavity body 14 in the middle, it enters other cavity bodies 14 through the flow channels 15. During the flow of the ceramic raw material in the flow channels 15, the control mechanism 3 can control the temperature of the ceramic raw material. After the ceramic raw material is injected, the shaping mechanism 4 is raised, which can separate the cavity body 14 from the flow channels 15.

[0043] During the conveying and flow of ceramic raw materials, it is necessary to control the temperature of the ceramic raw materials to reduce the sticking and affecting the flowability caused by temperature changes. First, the specific structure of the control mechanism 3 is disclosed. The control mechanism 3 includes a spiral groove opened in the inner wall of the flow channel 15. The inner wall of the spiral groove has a smooth structure.

[0044] Multiple flow channels 15 are inclined, with the end of the flow channel 15 near the middle cavity body 14 being higher than the end of the flow channel 15 near the side cavity body 14.

[0045] The above-mentioned ceramic raw materials are clay raw materials, which are rich in a variety of hydrated aluminosilicate minerals. When the clay is prepared into ceramics, water is added, which allows it to slide and deform freely, and can perfectly fill the cavity body 14 of various complex shapes.

[0046] The improvements are: See Figure 5It can be seen that, under the action of suction (a pump is used in this process, which is existing technology and will not be described in detail here), the ceramic raw material enters the cavity body 14 in the middle through the conveying pipe 23 and the material conveying pipe 16. At this time, the temperature of the ceramic raw material is in a relatively suitable state. When the ceramic raw material flows to the two flow channels 15, the ceramic raw material will enter the flow channels 15 under the action of pressure and be diverted to other cavity bodies 14. When the pressure in each cavity body 14 tends to be similar, they will start to fill at the same time until the ceramic raw material in multiple cavity bodies 14 is filled. This makes the final molded ceramic products have smaller deviations in size, density, texture, etc., and the product quality is more stable.

[0047] like Figure 3 As shown, the flow channel 15 is inclined, providing natural power for the flow of ceramic raw materials and facilitating their smooth transport within the channel. Simultaneously, the flow channel 15 employs a spiral structure (not shown in the figure), which increases the flow path length of the raw materials within the channel. From a fluid dynamics perspective, the spiral structure generates eddies within the flow channel 15. These eddies not only help to evenly distribute heat within the raw materials, reducing localized low temperatures and minimizing adhesion, but also prevent excessive pressure when the raw materials flow towards the edge cavity body 14, even when the flow channel 15 is inclined, ensuring stable filling of the raw materials within each cavity body 14.

[0048] Next, the specific structure of the shaping mechanism 4 is disclosed. The shaping mechanism 4 includes an inner cavity 41 opened inside the lower mold 12. An inner layer plate 42 is slidably provided inside the inner cavity 41, and the outer wall of the inner layer plate 42 is attached to the inner wall of the inner cavity 41.

[0049] Four extension rods 45 are fixedly installed on the surface of the inner layer plate 42 near the upper mold 11. The inner walls of the two flow channels 15 are provided with central holes 44. The two flow channels 15 are connected to the inner cavity 41 through the central holes 44. The ends of the four extension rods 45 away from the inner layer plate 42 are respectively inserted into the four central holes 44. An adjusting component 43 is installed at the bottom of the inner layer plate 42. The adjusting component 43 can drive the inner layer plate 42 to slide inside the inner cavity 41.

[0050] The adjusting component 43 includes two threaded holes 432 opened at the bottom of the inner cavity 41. Threaded support rods 431 are rotatably provided 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.

[0051] After the ceramic raw materials in multiple cavity bodies 14 are filled, the conveying of ceramic raw materials is stopped (a one-way valve can be installed inside the conveying pipe 16 to assist in pausing the conveying of ceramic raw materials, using existing technology, not shown in the figure). Then, the two threaded support rods 431 are rotated simultaneously, see reference. Figure 4 and combined Figure 7 As shown, the threaded support rod 431 utilizes the principle of a thread; when it rotates, it moves along its own axial direction. With rotation, the top of the threaded support rod 431 gradually enters the inner cavity 41, as... Figure 8 Because the inner layer plate 42 and the four extension rods 45 fixedly installed on its top are related to the movement of the threaded support rod 431, the inner layer plate 42 and the extension rods 45 will slide upward together under the push of the top of the threaded support rod 431 entering the inner cavity 41. Finally, the extension rods 45 will extend into the flow channel 15, separating the two ends of the flow channel 15. In this way, when the ceramic is formed in the cavity body 14, the flow channels 15 are separated, and the cavity bodies 14 will not be connected to each other, thereby avoiding the situation where the ceramic is connected together as a whole, which facilitates the subsequent individual processing and manufacturing of the ceramic.

[0052] Although the extension rod 45 can effectively separate the flow channel 15 and greatly prevent excessive connection between different cavity bodies 14, during the filling and curing stage of the ceramic material, some factors may cause a very small amount of ceramic material to connect at the edge of the cavity body 14 or at the interface of the flow channel 15. However, since the connected part is only a small amount of ceramic, and after molding, the texture of the connected part is not essentially different from the surrounding ceramic, it can be easily handled by light polishing without significantly affecting the main structure and appearance quality of the ceramic itself.

[0053] like Figure 4 As shown, when the inner plate 42 is lifted to the designated position and fixed, the structure of the lower mold 12 changes to a double-layer structure, that is, the existence of the inner cavity 41 in the middle of the inner plate 42. This inner cavity 41 can play a role in temperature regulation during the ceramic forming process. In the ceramic forming stage, the stability of 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 thermal conductivity coefficient in the inner cavity 41 is relatively low, which can effectively slow down the heat transfer rate. 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. This makes the temperature environment at the bottom of the ceramic relatively stable and will not be drastically affected by the rapid change of the external temperature.

[0054] Under such a stable temperature environment, the ceramic bottom can undergo uniform physical and chemical changes during the molding process. Its crystallization process, shrinkage process, etc. can proceed in an orderly manner. This not only helps to ensure the shape accuracy of the ceramic bottom, but also improves the uniformity of its internal structure, thereby significantly improving the overall molding effect of the ceramic and providing a strong guarantee for obtaining high-quality ceramic products.

[0055] To further ensure the fitting accuracy between the various parts, 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. A fitting module 51 is fixedly installed at the bottom of the top mold 111 and the middle mold 112. A slot 5 is opened at the top of the middle mold 112 and the lower mold 12. The surface of the slot 5 fits against the inner wall of the fitting module 51.

[0056] The improvements are: See Figure 9 and combined 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 removed from the mold, this layered structure can provide more operational convenience and reduce the demolding difficulty. The setting of the assembly module 51 makes the fit 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 assembly module 51 is inserted into the slot 5, the two can fit tightly to ensure the accuracy of mold assembly. This helps to ensure the shape accuracy of the blank during the ceramic forming process and reduce the defects caused by mold assembly errors. At the same time, it can ensure the overall stability of the mold when the mold is closed and prevent the ceramic raw material from overflowing from the mold gap under high pressure, thereby ensuring the quality of the final formed ceramic.

[0057] Considering the sliding of the inner layer plate 42 and the extension rod 45, adjustment indicator rings 6 are fixedly installed on the surfaces of the two threaded support rods 431. The adjustment indicator rings 6 are used to limit the sliding position of the inner layer plate 42.

[0058] The improvements are: See Figure 5 As shown, when the operator rotates the threaded support rod 431, the adjustment indicator ring 6 will move synchronously. When the top of the adjustment indicator ring 6 is in contact with the bottom of the lower mold 12, this specific position corresponds to the inner layer plate 42 being in contact with the top of the inner cavity 41. This design allows the operator to accurately determine whether the inner layer plate 42 has reached the predetermined position by simply observing the relative positional relationship between the adjustment indicator ring 6 and the bottom of the lower mold 12, thus ensuring the consistency and stability of the ceramic molding effect.

[0059] To ensure effective isolation between the cavity body 14 and the flow channel 15, the surfaces of the four extension rods 45 are covered with sealing covers 7, which are made of elastic material.

[0060] Each of the multiple central holes 44 has a sealing ring 71 at the opening on the side near the flow channel 15. The sealing ring 71 is made of elastic material.

[0061] The improvements are: See Figure 6 and combined Figure 8 As shown, the surfaces of the four extension rods 45 are covered with sealing covers 7, and multiple central holes 44 are provided with sealing rings 71 near the openings of the flow channel 15. Both the sealing covers 7 and the sealing rings 71 are made of elastic materials (such as rubber), which allows the sealing covers 7 and the sealing rings 71 to fit tightly against the contact surface when pressure is applied, and to return to their original shape after the force is released. When the extension rods 45 are inserted into the flow channel 15 to perform the isolation operation, even if the flow channel 15 is tilted, the sealing covers 7 can adapt to the channel wall pressure due to their elasticity, fit tightly against all gaps, and prevent the ceramic material from leaking. This ensures that the isolation effect between the flow channel 15 and the cavity body 14 is not affected. Together with the sealing rings 71, they form a stable sealing system, providing solid support for the precision and independence of ceramic molding. At the same time, the interaction between the sealing covers 7 and the sealing rings 71 can improve the sealing performance of the flow channel 15 and prevent the ceramic material from entering the inner cavity 41 from the central holes 44.

[0062] In summary, the working principle of this scheme is as follows: First, under the action of suction, the ceramic raw material enters the cavity body 14 in the middle through the conveying pipe 23 and the feeding pipe 16. At this time, the temperature of the ceramic raw material is in a relatively suitable state. When the ceramic raw material flows to the two flow channels 15, the ceramic raw material will enter the flow channels 15 under the action of pressure and be diverted to other cavity bodies 14. When the pressure in each cavity body 14 tends to be similar, they will start filling at the same time until the ceramic raw material in multiple cavity bodies 14 is filled. The flow channel 15 is inclined, which provides natural power for the flow of ceramic raw material. At the same time, the flow channel 15 adopts a spiral structure. The spiral structure increases the flow path length of the raw material in the flow channel 15. The spiral structure can generate a certain vortex in the flow channel 15. This vortex not only helps to evenly distribute the heat inside the raw material and reduce the situation of local low temperature, but also reduces the adhesion of the ceramic raw material.

[0063] After the ceramic raw materials in multiple cavity bodies 14 are filled, the conveying of ceramic raw materials is stopped. Then, two threaded support rods 431 are rotated simultaneously. Utilizing the principle of threads, the threaded support rods 431 move along their own axial direction when they rotate. As they rotate, the top of the threaded support rods 431 gradually enters the inner cavity 41. Because the inner layer plate 42 and the four extension rods 45 fixedly installed on its top are related to the movement of the threaded support rods 431, the inner layer plate 42 and the extension rods 45 slide upward together under the push of the top of the threaded support rods 431 entering the inner cavity 41. Finally, the extension rods 45 extend into the flow channel 15, separating the two ends of the flow channel 15. In this way, after the ceramic is formed in the cavity body 14, the flow channel 15 is separated, and the various cavity bodies 14 will not be connected to each other, thus avoiding the situation where the ceramic is connected as a whole, which facilitates the subsequent individual processing and manufacturing of the ceramic.

[0064] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-cavity ceramic preparation mold, comprising a mold body (1), wherein the mold body (1) is installed inside a worktable (2), characterized in that: The workbench (2) includes a support platform (21) and a storage cavity (22). The support platform (21) is a hollow structure. A conveying pipe (23) is installed at the end of the 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 platform (21) by bolts. The upper mold (11) and the lower mold (12) are molded together to form multiple cavity bodies (14). The multiple cavity bodies (14) are connected to each other through flow channels (15). The multiple flow channels (15) are formed by the upper mold (11) and the lower mold (12) being molded together. A material conveying pipe (16) is fixedly installed in the middle of the lower mold (12). The material conveying pipe (16) is connected to the bottom end of the cavity body (14) in the middle. A control mechanism (3) is provided inside the multiple flow channels (15). A shape control mechanism (4) is provided inside the lower mold (12). The shape control mechanism (4) can assist the lower mold (12) in forming a double-layer structure. After the ceramic raw material is transported from the conveying pipe (16) to the cavity body (14) in the middle, it enters other cavity bodies (14) through the flow channel (15). During the flow of the ceramic raw material in the flow channel (15), the control mechanism (3) can control the temperature of the ceramic raw material. After the ceramic raw material is injected, the shaping mechanism (4) is raised to separate the cavity body (14) from the flow channel (15).

2. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: The control mechanism (3) includes a spiral groove formed on the inner wall of the flow channel (15), the inner wall of the spiral groove having a smooth structure.

3. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: The multiple flow channels (15) are all inclined, and the end of the flow channel (15) near the middle cavity body (14) is higher than the end of the flow channel (15) near the side cavity body (14).

4. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: The shaping mechanism (4) includes an inner cavity (41) opened inside the lower mold (12), and an inner layer plate (42) is slidably provided inside the inner cavity (41). The outer wall of the inner layer plate (42) is in contact 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 the inner layer plate (42) near the upper mold (11). The inner walls of the two flow channels (15) are provided with central holes (44). The two flow channels (15) are connected to the inner cavity (41) through the central holes (44). The ends of the four extension rods (45) away from the inner layer plate (42) are respectively inserted into the four central 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 component (43) includes two threaded holes (432) opened at the bottom of the inner cavity (41). The two threaded holes (432) are rotatably provided with threaded support rods (431), and the tops of the two threaded support rods (431) are rotatably connected to the bottom of the inner plate (42).

7. The multi-cavity ceramic preparation mold according to claim 1, characterized in that: 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). A connecting module (51) is fixedly installed at the bottom of the top mold (111) and the middle mold (112). A slot (5) is opened at the top of the middle mold (112) and the lower mold (12). The surface of the slot (5) is in contact with the inner wall of the connecting module (51).

8. The multi-cavity ceramic preparation mold according to claim 6, characterized in that: An adjustment indicator ring (6) is fixedly installed on the surface of each of the two threaded support rods (431), the adjustment indicator ring (6) being 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: The surfaces of the four extension rods (45) are covered with sealing covers (7), which are made of elastic material.

10. The multi-cavity ceramic preparation mold according to claim 5, characterized in that: Each of the multiple central holes (44) is provided with a sealing ring (71) at the opening on the side near the flow channel (15), and the sealing ring (71) is made of elastic material.

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