Columnar high-voltage ceramic capacitor die

Abstract

The utility model discloses a cylindrical high-voltage ceramic capacitor die, and relates to the field of high-voltage insulation. The method is used for solving the problems of low withstand voltage and partial discharge of a product caused by defects on the surface of the high-voltage ceramic capacitor. Comprising two side edge setting modules of the same structure, a bottom plate used for setting first side walls and second side walls which are parallel to each other, and a third side wall and a special-shaped side wall which are located between the first side walls; the first side wall, the second side wall, the third side wall and the special-shaped side wall are sequentially connected end to end; the special-shaped side wall is divided into three sections, the first section makes contact with the first side wall, and the included angle between the first section and the first side wall is smaller than 60 degrees. The third section is in contact with the second side wall, and the included angle between the third section and the second side wall is smaller than 60 degrees; the second section is located between the first section and the third section, the head of the second section makes contact with the tail of the first section, and the tail of the second section makes contact with the head of the third section.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage insulation, and more specifically to a columnar high-voltage ceramic capacitor mould. Background Art

[0002] With the development of the national smart grid, high-voltage ceramic capacitors play an increasingly important role in it. The performance requirements for capacitors are also getting higher and higher. At present, the main problems of ceramic capacitors in practical applications are the instability of the withstand voltage level and the level of partial discharge, and the low yield rate. After a large number of statistical analyses in the production process, it is found that the withstand voltage breakdown or flashover and partial discharge mainly occur at the edge of the silver surface of the ceramic capacitor. By analyzing the silver surface of the ceramic body, it is found that the edge of the silver surface is prone to warping, burrs, and collision damage. These product defects seriously affect the withstand voltage and partial discharge performance of the product.

[0003] In summary, high-voltage ceramic capacitors are prone to low withstand voltage and partial discharge problems due to surface defects. Utility Model Content

[0004] The utility model provides a columnar high-voltage ceramic capacitor mold to solve the problem that the high-voltage ceramic capacitor has surface defects, which may easily lead to low withstand voltage and partial discharge of the product.

[0005] The utility model provides a columnar high-voltage ceramic capacitor mold, comprising:

[0006] Two side setting modules with the same structure;

[0007] A bottom plate, which is used to set a first side wall and a second side wall parallel to each other, a third side wall and a special-shaped side wall located between the first side walls, wherein the first side wall, the second side wall, the third side wall and the special-shaped side wall are connected end to end in sequence; the bottom plate, the first side wall, the second side wall, the third side wall and the special-shaped side wall constitute the side setting module;

[0008] The special-shaped side wall is divided into three sections, the first section is in contact with the first side wall, and the angle between the first section and the first side wall is less than 60°; the third section is in contact with the second side wall, and the angle between the third section and the second side wall is less than 60°;

[0009] The second segment is located between the first segment and the third segment, the head of the second segment contacts the tail of the first segment, and the tail of the second segment contacts the head of the third segment.

[0010] Preferably, the angle between the first section and the first side wall is between 30° and 60°; the angle between the second section and the second side wall is between 30° and 60°.

[0011] Preferably, the angle between the first section and the second section is greater than 90°, and the angle between the second section and the third section is greater than 90°.

[0012] Preferably, the area where the first section and the second section contact each other is in an arc shape, and the area where the second section and the third section contact each other is in an arc shape.

[0013] Preferably, the lengths of the first section and the second section are between 0.3 and 2 mm.

[0014] Preferably, a side of the special-shaped side wall away from the third side wall is in contact with the columnar high-voltage ceramic capacitor.

[0015] Preferably, the two side setting modules are arranged opposite to each other, and the columnar high-voltage ceramic capacitor is arranged between the special-shaped side walls respectively included in the two side wall setting templates.

[0016] Preferably, the two side setting modules are arranged opposite to each other, and the columnar high-voltage ceramic capacitor is arranged between the special-shaped side walls respectively included in the two side setting templates.

[0017] The utility model embodiment provides a columnar high-voltage ceramic capacitor mold, comprising: two side setting modules with the same structure; a bottom plate, which is used to set a first side wall and a second side wall parallel to each other, a third side wall and a special-shaped side wall located between the first side wall, the first side wall, the second side wall, the third side wall and the special-shaped side wall are connected in sequence from head to tail; the bottom plate, the first side wall, the second side wall, the third side wall and the special-shaped side wall constitute the side setting module; the special-shaped side wall is divided into three sections, the first section is in contact with the first side wall, and the angle between the first section and the first side wall is less than 60°; the third section is in contact with the second side wall, and the angle between the third section and the second side wall is less than 60°; the second section is located between the first section and the third section, the head of the second section is in contact with the tail of the first section, and the tail of the second section is in contact with the head of the third section. The chamfering die provided by the invention is used in the process of forming ceramic capacitors, which can effectively reduce the virtual edges generated in the process of blank production, reduce the virtual edge removal process in the process of blank production, reduce the labor intensity, and ensure the consistency requirements of the products in the production process. Furthermore, after a lot of practice, the surface of the product is chamfered to solve the abnormalities such as silver layer warping and edge burrs generated in the process of production, transportation, and packaging of the product, thereby improving the consistency of product performance and the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a columnar high-voltage ceramic capacitor mold structure provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of another columnar high-voltage ceramic capacitor mold structure provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of a green body structure after forming provided by an example of the utility model;

[0022] Figure 4 Another schematic diagram of the green body structure after forming provided by the utility model example;

[0023] Among them, 101 is a first side wall, 102 is a second side wall, 103 is a third side wall, 104 is a special-shaped side wall, 200 is a chamfered high-voltage ceramic capacitor, and 300 is an R-angled high-voltage ceramic capacitor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Figure 1 A schematic diagram of a columnar high-voltage ceramic capacitor mold structure provided by an embodiment of the utility model; Figure 2 A schematic diagram of another columnar high-voltage ceramic capacitor mold structure provided by an embodiment of the utility model; Figure 3 A schematic diagram of a green body structure after forming provided by an example of the utility model; Figure 4 Another schematic diagram of the green body structure after forming is provided for the utility model example. Figure 1 to Figure 4 Taking the example, the columnar high-voltage ceramic capacitor mold provided by the embodiment of the utility model is introduced in detail.

[0026] like Figure 1As shown, the columnar high-voltage ceramic capacitor mold includes: two side setting modules with the same structure; wherein one side setting module includes a bottom plate, a first side wall 101, a second side wall 102, a third side wall 103 and a special-shaped side wall 104.

[0027] Specifically, the bottom plate is used to set a first side wall 101 and a second side wall 102 which are parallel to each other, a third side wall 103 and a special-shaped side wall 104 which are located between the first side wall 101. In practical applications, the first side wall, the second side wall, the third side wall and the special-shaped side wall are connected end to end in sequence to form a closed rectangular structure, and the bottom plate, the first side wall, the second side wall, the third side wall and the special-shaped side wall constitute a side setting module.

[0028] In the embodiment of the utility model, the biggest difference from the existing mold is the included special-shaped side wall, in order to solve the problems of warping, burrs and damage that are easy to occur at the edge of the molding surface of the existing ceramic capacitor. Preferably, the special-shaped side wall 104 is divided into three sections, wherein the first section is in contact with the first side wall 101, and the angle between the first section and the first side wall 101 is less than 60°; the third section is in contact with the second side wall 102, and the angle between the third section and the second side wall 102 is less than 60°; further, the second section is located between the first section and the third section, the head end of the second section is in contact with the tail end of the first section, and the tail end of the second section is in contact with the head end of the third section.

[0029] Through the above arrangement, when the two side setting modules are arranged relative to each other, the columnar high-voltage ceramic capacitor is arranged between the special-shaped side walls respectively included therein, and when the columnar high-voltage ceramic capacitor is formed by the mold, due to the existence of the two special-shaped side walls, the four corners of the columnar high-voltage ceramic capacitor can be made into right angles, thereby solving the problem that the columnar high-voltage ceramic capacitor is easily damaged due to the existence of the right angles.

[0030] For example, Figure 1 As shown, in the columnar high-voltage ceramic capacitor mold provided by the embodiment of the utility model, the angle between the first section and the first side wall 101 is between 30° and 60°; the angle between the second section and the second side wall 102 is between 30° and 60°.

[0031] Furthermore, the angle between the first section and the second section is greater than 90°, and the angle between the second section and the third section is greater than 90°.

[0032] For example, Figure 2 As shown, in the columnar high-voltage ceramic capacitor mold provided by the embodiment of the utility model, the area where the first section and the second section contact each other is in an arc shape, and the area where the second section and the third section contact each other is in an arc shape.

[0033] Furthermore, the lengths of the first section and the second section are between 0.3 and 2 mm.

[0034] It should be noted that, in this embodiment, the side of the special-shaped side wall away from the third side wall is in contact with a side edge of the columnar high-voltage ceramic capacitor, that is, in practical applications, the embodiment of the utility model Figure 1 or Figure 2 The high-voltage ceramic capacitor mold provided is only a side setting module, and two side setting modules with the same structure can form a column high-voltage ceramic capacitor mold.

[0035] like Figure 3 As shown, based on the embodiment of the present utility model provided as Figure 1 The two side setting modules shown in the figure have a chamfer W of 30°~60° and a chamfer dimension L of 0.3~2mm. Therefore, the corner angle of the chamfered high-voltage ceramic capacitor 200 formed by the columnar high-voltage ceramic capacitor mold is between 30°~60° and the corner length is between 0.3~2mm.

[0036] like Figure 4 As shown, based on the embodiment of the utility model provided Figure 2 As shown in the two side setting modules, the columnar high-voltage ceramic capacitor mold adopts an R angle, R angle W: 30°~60°, and the R value is between 0.3 and 2 mm. Therefore, the R angle high-voltage ceramic capacitor 300 formed by the columnar high-voltage ceramic capacitor mold has a corner angle of 30°~60°, and the corner length is between 0.3 and 2 mm.

[0037] In summary, an embodiment of the utility model provides a columnar high-voltage ceramic capacitor mold, comprising: two side setting modules with the same structure; a bottom plate, which is used to set a first side wall and a second side wall parallel to each other, a third side wall and a special-shaped side wall located between the first side wall, and the first side wall, the second side wall, the third side wall and the special-shaped side wall are connected in sequence from head to tail; the bottom plate, the first side wall, the second side wall, the third side wall and the special-shaped side wall constitute the side setting module; the special-shaped side wall is divided into three sections, the first section is in contact with the first side wall, and the angle between the first section and the first side wall is less than 60°; the third section is in contact with the second side wall, and the angle between the third section and the second side wall is less than 60°; the second section is located between the first section and the third section, the head of the second section is in contact with the tail of the first section, and the tail of the second section is in contact with the head of the third section. The chamfering die provided by the invention is used in the process of forming ceramic capacitors, which can effectively reduce the virtual edges generated in the process of blank production, reduce the virtual edge removal process in the process of blank production, reduce the labor intensity, and ensure the consistency requirements of the products in the production process. Furthermore, after a lot of practice, the surface of the product is chamfered to solve the abnormalities such as silver layer warping and edge burrs generated in the process of production, transportation, and packaging of the product, thereby improving the consistency of product performance and the yield rate.

[0038] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A columnar high voltage ceramic capacitor mold, characterized in that: include: Two side setting modules with the same structure; A bottom plate, which is used to set a first side wall and a second side wall parallel to each other, a third side wall and a special-shaped side wall located between the first side walls, wherein the first side wall, the second side wall, the third side wall and the special-shaped side wall are connected end to end in sequence; the bottom plate, the first side wall, the second side wall, the third side wall and the special-shaped side wall constitute the side setting module; The special-shaped side wall is divided into three sections, the first section is in contact with the first side wall, and the angle between the first section and the first side wall is less than 60°; the third section is in contact with the second side wall, and the angle between the third section and the second side wall is less than 60°; The second segment is located between the first segment and the third segment, the head of the second segment contacts the tail of the first segment, and the tail of the second segment contacts the head of the third segment.

2. The columnar high voltage ceramic capacitor mold according to claim 1, characterized in that: The included angle between the first section and the first side wall is between 30° and 60°; the included angle between the second section and the second side wall is between 30° and 60°.

3. The columnar high voltage ceramic capacitor mold according to claim 1, characterized in that: The angle between the first section and the second section is greater than 90°, and the angle between the second section and the third section is greater than 90°.

4. The columnar high voltage ceramic capacitor mold according to claim 1, characterized in that: The area where the first section and the second section contact each other is in an arc shape, and the area where the second section and the third section contact each other is in an arc shape.

5. The columnar high voltage ceramic capacitor mold according to any one of claims 1 to 4, characterized in that: The lengths of the first section and the second section are between 0.3 mm and 2 mm.

6. The columnar high voltage ceramic capacitor mold according to claim 1, characterized in that: A side of the special-shaped side wall away from the third side wall is in contact with the columnar high-voltage ceramic capacitor.

7. The columnar high voltage ceramic capacitor mold according to claim 1, characterized in that: The two side setting modules are arranged opposite to each other, and the columnar high-voltage ceramic capacitor is arranged between the special-shaped side walls respectively included in the two side setting templates.

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