Ceramic capacitor powder tabletting device

Abstract

The utility model discloses a ceramic capacitor powder tabletting device which comprises a base and an upper base plate, a plurality of tabletting assemblies are arranged between the base and the upper base plate, each tabletting assembly comprises a pressed cover, a pressing rod, a first inner pad and a second inner pad, a positioning protrusion corresponding to each tabletting assembly is arranged on the top face of the base, and the pressing rod is arranged on the top face of the base. A vertically-through press-fit hole is formed in the pressed cover, a sinking groove matched with the positioning protrusion is formed in the bottom face of the pressed cover, the pressed cover is fixed to the positioning protrusion in a matched mode through the sinking groove, the hole diameter of the press-fit hole is matched with the diameter of the first inner pad and the diameter of the second inner pad, and the first inner pad and the second inner pad are arranged in the press-fit hole in an overlapped mode. A space used for being filled with ceramic capacitor powder is formed between the upper cushion plate and the lower cushion plate, the lower end of the pressing rod extends into the pressing hole to make contact with the top face of the second inner cushion, and the upper end of the pressing rod makes contact with the bottom face of the upper cushion plate. According to the utility model, the tabletting quality can be improved, multiple groups of ceramic capacitor powder can be subjected to tabletting operation at the same time, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of ceramic capacitor preparation technology, and in particular to a ceramic capacitor powder pressing device. Background Technology

[0002] In the ceramic capacitor manufacturing process, the quality of the powder directly affects the quality of the finished product. Therefore, accurately judging the performance of each batch of powder is particularly important. Currently, the method for determining whether powder is qualified is to granulate the same batch of powder, then press it into dry sheets using a manual tablet press. These dry sheets are then subjected to sintering, silvering, and polarization processes before testing to obtain relevant data for evaluation. The tablet pressing step is crucial for subsequent testing of the dry sheets; it is the initial and critical step in the dry sheet forming process. The quality of the pressed sheets directly affects the accuracy of the test data. Currently, after granulation, the powder is dried and then pressed into sheets using a small manual tablet press. The pressing pressure is controlled by a pressure gauge, and the mold used is the same for each sheet produced. This pressing method results in uneven pressure control and low production efficiency, leading to significant performance differences between each dry sheet. This makes it impossible to accurately judge the powder performance, creating potential problems for subsequent production. Unqualified powder may flow into the next production stage, causing financial losses to the company. Furthermore, poorly compressed dry-pressed tablets are extremely prone to cracking during polarization, which can damage polarization equipment and even endanger the personal safety of operators. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a ceramic capacitor powder pressing device to improve pressing efficiency and pressing quality.

[0004] To achieve the above objectives, this utility model proposes a ceramic capacitor powder pressing device, including a base and an upper pad. Several pressing assemblies are arranged between the base and the upper pad. Each pressing assembly includes a pressure cover, a clamping rod, a first inner pad, and a second inner pad. A positioning protrusion is provided on the top surface of the base corresponding to each pressing assembly. The pressure cover has a vertically penetrating pressing hole, and its bottom surface has a groove that matches the positioning protrusion. The pressure cover is fixed to the positioning protrusion by the groove. The diameter of the pressing hole matches the diameter of the first inner pad and the second inner pad. The first inner pad and the second inner pad are overlapped and inserted into the pressing hole, forming a space for filling ceramic capacitor powder. The second inner pad is located above the first inner pad. The lower end of the clamping rod extends into the pressing hole and contacts the top surface of the second inner pad, while the upper end of the clamping rod contacts the bottom surface of the upper pad.

[0005] In the above scheme: there are four sets of pressing components, which are arranged in a matrix to simultaneously press four groups of ceramic capacitor powder. The matrix arrangement ensures that the four pressing components are subjected to uniform force, which helps to ensure the quality of pressing.

[0006] In the above scheme: the diameter of the upper part of the clamping rod is larger than the diameter of the lower part, and the extension length of the lower part exceeds the depth of the pressing hole. The lower part can fully penetrate into the pressing hole, smoothly ejecting the first and second inner pads from the pressing hole. This design ensures the reliability and stability of the demolding action and avoids the problem of incomplete demolding due to insufficient length of the clamping rod. The larger diameter of the upper part increases its contact area with the upper pad, ensuring stability during pressing.

[0007] In the above scheme: the tablet pressing assembly is made of stainless steel, which ensures hardness while facilitating surface cleaning and avoiding cross-contamination.

[0008] The beneficial effects of this utility model are as follows: 1. A positioning protrusion is designed on the top surface of the base corresponding to each set of pressing components, and a matching groove is provided on the bottom surface of the pressure cover. The pressure cover is fixed to the positioning protrusion by fitting into the groove. This design ensures that the position of the pressure cover on the base is accurately fixed, avoiding displacement of the pressure cover during the pressing process, thereby ensuring the stability and consistency of each pressing operation and helping to improve the pressing quality. 2. Several sets of pressing components are arranged between the base and the upper pad. Each set of pressing components is independent of each other, which means that multiple sets of ceramic capacitor powder can be pressed at the same time, greatly improving production efficiency. 3. The overall structure of this pressing device is simple, and all parts can be disassembled for cleaning, which can effectively avoid cross-contamination caused by powder residue. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a structural diagram of the base.

[0011] Figure 3 This is a schematic diagram of the tablet compression assembly.

[0012] Figure 4 yes Figure 3 A sectional view. Detailed Implementation

[0013] like Figure 1 As shown in Figure 4, a ceramic capacitor powder pressing device mainly consists of a base 1 and an upper pad 2, as well as several pressing components A arranged between the base 1 and the upper pad 2.

[0014] Each pressing assembly A includes a pressure cover 3, a clamping rod 6, a first inner pad 4, and a second inner pad 5. A positioning protrusion 11 is provided on the top surface of the base 1 corresponding to each pressing assembly A. The pressure cover 3 has a vertically penetrating pressing hole 32, and its bottom surface has a groove 31 that matches the positioning protrusion 11. The pressure cover 3 is fixed to the positioning protrusion 11 by the groove 31. The diameter of the pressing hole 32 matches the diameters of the first inner pad 4 and the second inner pad 5. The first inner pad 4 and the second inner pad 5 are overlapped and inserted into the pressing hole 32, forming a space between them for filling ceramic capacitor powder.

[0015] The second inner pad 5 is located above the first inner pad 4. The lower end of the pressing rod 6 extends into the pressing hole 32 and contacts the top surface of the second inner pad 5. The upper end of the pressing rod 6 contacts the bottom surface of the upper pad 2.

[0016] Specifically, the upper diameter of the clamping rod 6 is larger than the lower diameter, and the extension length of the lower portion exceeds the depth of the pressing hole 32. The lower portion can fully penetrate into the pressing hole 32, smoothly ejecting the first inner pad 4 and the second inner pad 5 from the pressing hole 32. This design ensures the reliability and stability of the demolding action, avoiding the problem of incomplete demolding due to insufficient length of the clamping rod 6. The larger diameter of the upper portion increases its contact area with the upper pad 2, ensuring stability during pressing.

[0017] Specifically, there are four sets of pressing components A, which are arranged in a matrix to simultaneously press four groups of ceramic capacitor powder. The matrix arrangement ensures that the four pressing components A are subjected to uniform force, which helps to ensure the quality of the pressing process.

[0018] Specifically, tablet compression assembly A is made of stainless steel, which ensures hardness while facilitating surface cleaning and avoiding cross-contamination.

[0019] To facilitate demolding, we can also equip the tablet pressing device with a flat bottom plate (not shown in the figure). On the top surface of the bottom plate, a sleeve is placed corresponding to each set of tablet pressing assembly A. The inner diameter of the sleeve is larger than the outer diameter of the pressure cover 3. A support platform is provided inside the sleeve, and the inner diameter of the support platform is larger than the diameter of the pressing hole 32.

[0020] After the tableting device completes the pressing process, each tableting assembly A can be removed from the base 1 and placed on the support platform of each sleeve. The upper pad 2 can continue to cover each tableting assembly A. When the upper pad 2 is pressed, the clamping rod 6 can push the first inner pad 4 and the second inner pad 5 out of the pressing hole 32. This design provides a safe and convenient way to remove the tablets after pressing. In traditional tableting devices, directly removing the tablets from the pressing station after pressing may be inconvenient and may damage the product. However, in this solution, after the first inner pad 4 and the second inner pad 5 are pushed out, the operator can easily remove the dry tablets located between the first inner pad 4 and the second inner pad 5, reducing the risk of product damage due to improper operation.

Claims

1. A device for pressing ceramic capacitor powder tablets, comprising a base (1) and an upper platen (2), characterised in that: The base (1) and the upper backing plate (2) are provided with several tabletting assemblies (A), the tabletting assembly (A) comprises a pressure cover (3), a pressing rod (6), a first inner pad (4) and a second inner pad (5), the top surface of the base (1) is provided with a positioning protrusion (11) corresponding to each set of tabletting assemblies (A), the pressure cover (3) is provided with a pressing hole (32) penetrating from top to bottom, and the bottom surface of the pressure cover (3) is provided with a sunken groove (31) matched with the positioning protrusion (11), the pressure cover (3) is fixed on the positioning protrusion (11) through the sunken groove (31), the diameter of the pressing hole (32) is matched with the diameter of the first inner pad (4) and the second inner pad (5), the first inner pad (4) and the second inner pad (5) are overlapped and arranged in the pressing hole (32), and a space for filling ceramic capacitor powder is formed between the first inner pad (4) and the second inner pad (5), the second inner pad (5) is located on the upper side of the first inner pad (4), the lower end of the pressing rod (6) extends into the pressing hole (32) and is in contact with the top surface of the second inner pad (5), and the upper end of the pressing rod (6) is in contact with the bottom surface of the upper backing plate (2).

2. The apparatus for sheeting ceramic capacitor powder of claim 1, wherein: The tabletting assemblies (A) are four sets, and the four sets of tabletting assemblies (A) are arranged in a matrix.

3. The apparatus for sheeting ceramic capacitor powder of claim 1 wherein: The diameter of the upper end part of the pressing rod (6) is greater than the diameter of the lower end part, and the extension length of the lower end part exceeds the depth of the pressing hole (32).

4. The apparatus for sheeting ceramic capacitor powder of claim 1 wherein: The tabletting assemblies (A) are made of stainless steel material.

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