Die for cold isostatic pressing forming of ceramic tube

Abstract

The utility model relates to the technical field of isostatic pressing, and discloses a ceramic tube cold isostatic pressing forming die which comprises a die body, the die body is composed of an inner layer and an outer layer, the inner layer is embedded in the outer layer in a threaded mode, and outer threads are arranged on the outer wall of the die body. And a connecting sealing sleeve is arranged on the mold body at the position of the external thread in a threaded sleeving manner. According to the technical scheme, the mold body adopts the double-layer structural design of the inner layer made of the silicon rubber material and the outer layer made of the polyether-ether-ketone material, so that the mold body can be prevented from deforming under high pressure, the forming size precision of the ceramic tube is improved, and a plurality of mold bodies can be connected in a sealing manner under the action of the connecting sealing sleeve, so that the forming quality of the ceramic tube is improved. The length of the die body can be increased, and the die can adapt to multi-specification production and is convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of isostatic pressing technology, specifically a mold for cold isostatic pressing of ceramic tubes. Background Technology

[0002] Isostatic pressing involves placing the object to be processed in a sealed container filled with liquid and gradually applying equal pressure to all surfaces of the object through a pressurization system. This reduces the distance between molecules and increases density without changing the shape of the object, thereby improving the physical properties of the material. In the production of ceramic tubes, ceramic powder is filled into a mold and then placed into a container. The pressure inside the container is evenly transmitted to the surface of the mold through the fluid, so that the ceramic powder is uniformly compressed and formed.

[0003] Existing ceramic tube forming molds are usually made of a single elastic material, which may deform under high pressure, affecting the forming accuracy of ceramic tubes. Therefore, a mold for cold isostatic pressing of ceramic tubes is needed. Utility Model Content

[0004] The purpose of this invention is to provide a mold for cold isostatic pressing of ceramic tubes, which solves the problems mentioned in the background art.

[0005] This application provides a mold for cold isostatic pressing of ceramic tubes, including a mold body. The mold body is composed of an outer layer and an inner layer. The inner layer is nested inside the outer layer. The outer wall of the mold body is provided with an external thread. A connecting sealing sleeve is threaded onto the mold body at the position of the external thread.

[0006] In use, the double-layer structure design of the mold body, with an inner layer of silicone rubber and an outer layer of polyetheretherketone, can prevent the mold body from deforming under high pressure, increasing the dimensional accuracy of the ceramic tube. The inner layer can provide uniform radial compression to accommodate the deformation of ceramic powder, while the outer layer can limit the axial expansion of the mold body and prevent excessive deformation of the mold body due to high pressure. Furthermore, the inner and outer layers are connected by a threaded nesting connection, which allows for flexible assembly and disassembly. At the same time, under the action of the connecting sealing sleeve, multiple mold bodies can be sealed together, increasing the length of the mold body and adapting to the production of multiple specifications.

[0007] Optionally, the outer wall of the connecting sealing sleeve is provided with anti-slip texture.

[0008] By adopting the above technical solution, it is possible to prevent users from slipping their hands when installing the connecting sealing sleeve.

[0009] Optionally, the outer layer is made of silicone rubber.

[0010] By adopting the above technical solution, uniform radial compression can be provided to accommodate the deformation of ceramic powder.

[0011] Optionally, the inner layer is made of polyetheretherketone (PEEK).

[0012] By adopting the above technical solution, the axial expansion of the mold body can be limited, preventing excessive deformation of the mold body due to high pressure.

[0013] Optionally, the mold body is wrapped with PTFE tape at the location of the external thread.

[0014] By adopting the above technical solution, the sealing performance of multiple mold bodies connected by a connecting sealing sleeve can be improved.

[0015] Optionally, the top end of the mold body is provided with an upper sealing cover, and the bottom end of the mold body is provided with a lower sealing cover.

[0016] By adopting the above technical solution, the mold body can be sealed to prevent fluid from entering the interior of the mold body.

[0017] Optionally, a connecting post is fixedly connected at the center of the top of the lower sealing cover.

[0018] By adopting the above technical solution, the formed ceramic tube can be a hollow tube, which can be formed in one piece, thus improving work efficiency.

[0019] Optionally, the inner wall of the connecting sealing sleeve is provided with an internal thread that is compatible with the external thread.

[0020] By adopting the above technical solution, the stability of the connecting sealing sleeve installation is improved.

[0021] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0022] The technical solution of this application adopts a double-layer structure design with an outer layer of silicone rubber and an inner layer of polyetheretherketone (PEEK) for the mold body. This design can prevent the mold body from deforming under high pressure, increase the dimensional accuracy of the ceramic tube, and the inner and outer layers are connected by a threaded nesting connection, which can be flexibly disassembled and assembled. At the same time, under the action of the connecting sealing sleeve, multiple mold bodies can be sealed and connected, which can increase the length of the mold body, adapt to the production of multiple specifications, and is convenient and practical. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1This is a schematic diagram of the overall structure of a mold for cold isostatic pressing of ceramic tubes according to this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of a mold for cold isostatic pressing of ceramic tubes according to this utility model;

[0026] Figure 3 This is a schematic diagram of the combined structure of multiple mold bodies of a mold for cold isostatic pressing of ceramic tubes according to this utility model.

[0027] Figure 4 This is a schematic diagram of the connecting sealing sleeve of a mold for cold isostatic pressing of ceramic tubes according to this utility model.

[0028] In the diagram: 1. Raw material tape; 2. Mold body; 201. Outer layer; 202. Outer layer; 3. External thread; 4. Internal thread; 5. Upper sealing cap; 6. Connecting column; 7. Lower sealing cap; 8. Connecting sealing sleeve; 9. Anti-slip texture. Detailed Implementation

[0029] Please see Figure 1-4 This utility model provides a technical solution: a mold for cold isostatic pressing of ceramic tubes, including a mold body 2, the mold body 2 is composed of an outer layer 201 and an inner layer 202, the inner layer 202 is threadedly nested inside the outer layer 201, the outer wall of the mold body 2 is provided with an external thread 3, and a connecting sealing sleeve 8 is threadedly fitted at the position of the external thread 3 on the mold body 2.

[0030] In the technical solution of this utility model, such as Figure 3 and Figure 4 As shown, the outer wall of the connecting sealing sleeve 8 is provided with anti-slip texture 9; this can prevent the user from slipping when installing the connecting sealing sleeve 8.

[0031] In the technical solution of this utility model, not shown, the outer layer 201 is made of silicone rubber; it can provide uniform radial compression and adapt to the deformation of ceramic powder.

[0032] In the technical solution of this utility model, not shown, the inner layer 202 is made of polyetheretherketone material; it can limit the axial expansion of the mold body 2 and prevent excessive deformation of the mold body 2 due to high pressure.

[0033] In the technical solution of this utility model, such as Figure 2 As shown, the mold body 2 is wrapped with PTFE tape 1 at the position of the external thread 3; this can improve the sealing performance when multiple mold bodies 2 are connected by the connecting sealing sleeve 8.

[0034] In the technical solution of this utility model, such as Figure 2As shown, the top end of the mold body 2 is covered with an upper sealing cover 5, and the bottom end of the mold body 2 is covered with a lower sealing cover 7; this can seal the mold body 2 and prevent fluid in the container from entering the interior of the mold body 2.

[0035] In the technical solution of this utility model, such as Figure 2 As shown, a connecting post 6 is fixedly connected to the center of the top of the lower sealing cover 7; this enables the formed ceramic tube to be a hollow tube, which can be formed in one piece, thus improving work efficiency.

[0036] In the technical solution of this utility model, such as Figure 4 As shown, the inner wall of the connecting sealing sleeve 8 is provided with an internal thread 4 that is compatible with the external thread 3; this improves the firmness of the installation of the connecting sealing sleeve 8.

[0037] In use, the double-layer structure design of the mold body 2, consisting of an outer layer 201 made of silicone rubber and an inner layer 202 made of polyetheretherketone, can prevent the mold body 2 from deforming under high pressure, thereby increasing the dimensional accuracy of the ceramic tube. The outer layer 201 can provide uniform radial compression to accommodate the deformation of ceramic powder, while the inner layer 202 can limit the axial expansion of the mold body 2, preventing excessive deformation of the mold body 2 due to high pressure. Furthermore, the outer layer 201 and the inner layer 202 are connected by a threaded nesting, allowing for flexible assembly and disassembly. At the same time, under the action of the connecting sealing sleeve 8, multiple mold bodies 2 can be sealed together, increasing the length of the mold body 2 and adapting to the production of multiple specifications.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for cold isostatic pressing of ceramic tubes, characterized in that: The mold body (2) is composed of an outer layer (201) and an inner layer (202). The inner layer (202) is nested inside the outer layer (201). The outer wall of the mold body (2) is provided with an external thread (3). A connecting sealing sleeve (8) is threaded on the mold body (2) at the position of the external thread (3).

2. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The outer wall of the connecting sealing sleeve (8) is provided with anti-slip texture (9).

3. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The outer layer (201) is made of silicone rubber.

4. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The inner layer (202) is made of polyetheretherketone (PEEK).

5. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The mold body (2) is wrapped with raw material tape (1) at the position of the external thread (3).

6. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The top of the mold body (2) is covered with an upper sealing cover (5), and the bottom of the mold body (2) is covered with a lower sealing cover (7).

7. The mold for cold isostatic pressing of ceramic tubes according to claim 6, characterized in that, A connecting post (6) is fixedly connected at the center of the top of the lower sealing cover (7).

8. The mold for cold isostatic pressing of ceramic tubes according to claim 1, characterized in that, The inner wall of the connecting sealing sleeve (8) is provided with an internal thread (4) that is compatible with the external thread (3).

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