Film for capacitor lamination

Abstract

The invention discloses a film for capacitor lamination, the film is provided with a first elastic block and a plurality of second elastic blocks, the thickness of the second elastic blocks is greater than that of the first elastic block, first exhaust grooves are arranged among the plurality of second elastic blocks, the periphery of the film is provided with elastic edges, and the first exhaust grooves are communicated with the first exhaust grooves. The elastic edge comprises an inclined part and a horizontal part, one end of the inclined part is connected with the rubber sheet, the other end of the inclined part is connected with the horizontal part, the height of the horizontal part is consistent with that of the second elastic block, and a plurality of second exhaust grooves are formed in the connecting corner angle of the inclined part and the horizontal part; the bottom layer ceramic diaphragm is laminated on the rubber sheet, the gap can be used as an exhaust channel, and air between the ceramic diaphragm and the rubber sheet can be fully exhausted from the exhaust groove after passing through the exhaust channel in the process of pressurizing the ceramic diaphragm, so that the flatness of the diaphragm and the adhesion of blocks are ensured, and the product quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of chip-type multilayer ceramic capacitors, and in particular relates to a film for capacitor lamination. Background Art

[0002] In the current production process of chip ceramic capacitors, traditional laminating machines do not laminate the bottom ceramic diaphragm of some products evenly when laminating the diaphragm, which easily traps air between the film and the ceramic diaphragm, generating bubbles, causing uneven blocks and product scrapping. Therefore, there is an urgent need to solve the problem of residual bubbles in the block lamination process. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a film for capacitor lamination, which can effectively solve the problem in the prior art that bubbles are easily generated between the film and the ceramic diaphragm when laminating the diaphragms, thereby causing uneven blocks and product scrapping.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A film for capacitor stacking, wherein a first elastic block and a plurality of second elastic blocks are provided on the film, wherein the first elastic block is arranged on the film, and the plurality of second elastic blocks are arranged in a matrix and are all located on the first elastic block, wherein the thickness of the second elastic block is greater than the thickness of the first elastic block, and a first exhaust groove is provided between the plurality of second elastic blocks, and an elastic edge is provided on the periphery of the film, wherein the elastic edge comprises an inclined portion and a horizontal portion, wherein one end of the inclined portion is connected to the film, and the other end of the inclined portion is connected to the horizontal portion, and the height of the horizontal portion is consistent with the height of the second elastic block, and a plurality of second exhaust grooves are provided at the connecting corners of the inclined portion and the horizontal portion.

[0006] As a preferred solution of the present invention, the inclination angle of the inclined portion is α, 0<α<90°.

[0007] As a preferred solution of the present invention, the inclination angle formed between the second exhaust groove and the horizontal portion is α1, wherein α1=α / 2.

[0008] As a preferred embodiment of the present invention, the depth of the second exhaust groove is equal to 1 / 2 of the depth of the first exhaust groove.

[0009] As a preferred solution of the present invention, the first exhaust groove and the second exhaust groove are located on the same straight line.

[0010] As a preferred solution of the present invention, the width of the first exhaust groove is consistent with the width of the second exhaust groove.

[0011] The film for capacitor lamination provided by the present invention has the following beneficial effects compared with the prior art:

[0012] When using the film of the present invention, a first elastic block and a plurality of second elastic blocks are provided on the film, a first exhaust groove is provided between the plurality of second elastic blocks, an elastic edge is provided on the periphery of the film, the elastic edge includes an inclined portion and a horizontal portion, and a plurality of second exhaust grooves are provided at the connecting edges and corners of the inclined portion and the horizontal portion; therefore, in the lamination process, the bottom ceramic diaphragm is laminated on the side of the film containing the elastic blocks, the first exhaust groove can serve as an exhaust channel, and in the process of pressurizing the ceramic diaphragm, the air between the ceramic diaphragm and the film can be fully discharged from the second exhaust groove after passing through the first exhaust groove, thereby ensuring the flatness of the diaphragm and the adhesion of the blocks, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0014] Figure 1 is a schematic structural diagram of a film for capacitor lamination provided by an embodiment of the present invention;

[0015] Figure 2 It is a structural diagram of the elastic block;

[0016] Figure 3 is a schematic structural diagram of a first exhaust slot;

[0017] Figure 4 It is a schematic diagram of the structure of the inclined part and the horizontal part;

[0018] Figure 5 is a side view of the inclined portion and the horizontal portion;

[0019] Figure 6 is a schematic diagram of the structure of the second exhaust slot;

[0020] Figure 7 It is a schematic diagram of the state where the ceramic diaphragm is pressed onto the film;

[0021] Figure 8 It is a schematic diagram of the structure in which the ceramic diaphragm is pressed against the film;

[0022] Fig. 9 It is a schematic diagram of the structure from another perspective after the ceramic diaphragm is pressed against the film;

[0023] Fig.10 It is a schematic diagram of the structure after the ceramic diaphragm and the film are bonded together.

[0024] Markings in the figure:

[0025] Film 1; first elastic block 2; second elastic block 3; first exhaust groove 4; inclined portion 5; horizontal portion 6; second exhaust groove 7; diaphragm 8. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0028] like Figures 1 to 6 As shown, a preferred embodiment of the present invention provides a film 1 for capacitor stacking, wherein a first elastic block 2 and a plurality of second elastic blocks 3 are provided on the film 1, wherein the first elastic block 2 is arranged on the film 1, and the plurality of second elastic blocks 3 are arranged in a matrix and are all located on the first elastic block 2, wherein the thickness of the second elastic block 3 is greater than the thickness of the first elastic block 2, and a first exhaust groove 4 is provided between the plurality of second elastic blocks 3, and an elastic edge is provided on the periphery of the film 1, wherein the elastic edge comprises an inclined portion 5 and a horizontal portion 6, wherein one end of the inclined portion 5 is connected to the film 1, and the other end of the inclined portion 5 is connected to the horizontal portion 6, and the height of the horizontal portion 6 is consistent with the height of the second elastic block 3, and a plurality of second exhaust grooves 7 are provided at the connecting corners of the inclined portion 5 and the horizontal portion 6.

[0029] When using the film 1 of the present invention, a first elastic block 2 and a plurality of second elastic blocks 3 are provided on the film 1, a first exhaust groove 4 is provided between the plurality of second elastic blocks 3, an elastic edge is provided on the periphery of the film 1, the elastic edge includes an inclined portion 5 and a horizontal portion 6, and a plurality of second exhaust grooves 7 are provided at the connecting edges and corners of the inclined portion 5 and the horizontal portion 6; therefore, in the process of lamination, the bottom ceramic diaphragm 8 is laminated on the side of the film 1 containing the elastic blocks, the first exhaust groove 4 can be used as an exhaust channel, and in the process of pressurizing the ceramic diaphragm 8, the air between the ceramic diaphragm 8 and the film 1 can be fully discharged from the second exhaust groove 7 after passing through the first exhaust groove 4, thereby ensuring the flatness of the diaphragm 8 and the adhesion of the blocks, and improving the product quality.

[0030] like Figures 7 to 10 As shown, in the specific operation process, the ceramic diaphragm 8 is placed on the elastic block of the double-sided film 1, and downward pressure is applied to the ceramic diaphragm 8, so that the elastic block with a larger height is squeezed and deformed, and the edges of the two adjacent elastic blocks are convex and can fill most of the space of the first exhaust groove 4, so that the first exhaust groove 4 becomes smaller, and the inclined portion 5 and the horizontal portion 6 are synchronously deformed downward under the action of external pressure until the second exhaust groove 7 is flush with the height of the first elastic block 2. At this time, the opening diameter of the second exhaust groove 7 reaches the maximum, and only the common edge between the inclined portion 5 and the horizontal portion 6 can contact the ceramic diaphragm 8, so the gas between the film 1 and the ceramic diaphragm 8 can be smoothly discharged from the second exhaust groove 7;

[0031] When the pressure applied to the ceramic diaphragm 8 is removed, the second elastic block 3 restores its initial thickness and shape under the action of its own elasticity, and the inclined portion 5 and the horizontal portion 6 restore their original shapes. At this time, the top surface of the horizontal portion 6 can be fitted with the ceramic diaphragm 8, that is, the second exhaust groove 7 can be completely sealed by the ceramic diaphragm 8 and the horizontal portion 6, thereby preventing external air from entering the ceramic film 1 again, and completing the entire ceramic film 1 fitting process;

[0032] Therefore, the film 1 of the present invention can fully eliminate the air between the ceramic diaphragm 8 and the film 1 during lamination, prevent bubbles from remaining in the central area, and use the inclined portion 5 and the horizontal portion 6 to achieve sealing adsorption of the edge of the film 1, thereby ensuring full contact between the ceramic diaphragm 8 and the film 1 in the later production process, maintaining the flatness of the ceramic diaphragm 8, and improving the stability and qualified rate of the product.

[0033] It can be understood that when the ceramic diaphragm 8 is bonded to the film 1 and a certain pressure is applied, the air at the bottom of the diaphragm 8 is discharged to the outside of the film 1 through the first exhaust grooves 4; when the pressure applied to the ceramic diaphragm 8 is removed, the film 1 of the present invention returns to its original shape under the action of its own elasticity, the top surface of the second elastic block 3 is bonded to the bottom surface of the block, the inclined portion 5 and the horizontal portion 6 return to their original shapes, and at this time the top surface of the horizontal portion 6 can be bonded to the ceramic diaphragm 8, that is, the second exhaust grooves 7 can be completely sealed by the ceramic diaphragm 8 and the horizontal portion 6. At this time, a certain amount of air still remains in the first exhaust grooves 4, but external air cannot enter again, and the bottom surface of the block is completely bonded to the double-sided film 1. The bonding process ensures that no bubbles remain on the bottom surface.

[0034] In this embodiment, the height of the first elastic block 2 is less than the height of the second elastic block 3, the area of ​​the first elastic block 2 is the same as the area of ​​the film 1, and the length and width of the second elastic block 3 are determined by factors such as the specifications of the ceramic capacitors currently produced, the size of the ceramic diaphragm 8, the machine specifications, the characteristics of the ceramic capacitor materials, and the production process. In this embodiment, the length and width are both less than 1 mm.

[0035] In this embodiment, the width of the first exhaust groove 4 is smaller than the height of an elastic block located at a corner.

[0036] For example, the inclination angle of the inclined portion 5 is α, and the inclination angle formed between the second exhaust groove 7 and the horizontal portion 6 is α1, wherein 0<α<90°, and α1=α / 2. The inclination angle can be actually set according to the specifications of the ceramic diaphragm 8, the type of laminating machine, material properties, process parameters and other factors.

[0037] Exemplarily, the depth of the second exhaust groove 7 is equal to 1 / 2 of the depth of the first exhaust groove 4. When specifically set, it can be determined based on the specifications of the ceramic capacitor currently produced, the size of the ceramic diaphragm 8, the machine specifications, the material properties of the ceramic capacitor, the production process and other factors, and the depth of the second exhaust groove 7 will not contact the outer edge of the horizontal portion 6, nor will it penetrate the other side angle of the intersection between the inclined portion 5 and the horizontal portion 6, otherwise it will cause leakage and fail to form a sealing effect.

[0038] Exemplarily, the first exhaust groove 4 and the second exhaust groove 7 are located on the same straight line, and the width of the first exhaust groove 4 is consistent with the width of the second exhaust groove 7 to ensure the exhaust effect.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A film for capacitor lamination, characterized in that: A first elastic block and a plurality of second elastic blocks are provided on the film, the first elastic block is arranged on the film, the plurality of second elastic blocks are arranged in a matrix and are all located on the first elastic block, the thickness of the second elastic block is greater than the thickness of the first elastic block, a first exhaust groove is provided between the plurality of second elastic blocks, an elastic edge is provided on the periphery of the film, the elastic edge includes an inclined portion and a horizontal portion, one end of the inclined portion is connected to the film, the other end of the inclined portion is connected to the horizontal portion, the height of the horizontal portion is consistent with the height of the second elastic block, and a plurality of second exhaust grooves are provided at the connecting corners of the inclined portion and the horizontal portion.

2. A film for capacitor stacking according to claim 1, characterized in that: The inclined portion has an inclination angle of α, 0<α<90°.

3. A film for capacitor stacking according to claim 2, characterized in that: The inclination angle formed between the second exhaust groove and the horizontal portion is α1, wherein α1=α / 2.

4. A film for capacitor stacking according to claim 2, characterized in that: The depth of the second exhaust groove is equal to 1 / 2 of the depth of the first exhaust groove.

5. A film for capacitor stacking according to claim 1, characterized in that: The first exhaust groove and the second exhaust groove are located on the same straight line.

6. A film for capacitor stacking according to claim 1, characterized in that: The width of the first exhaust groove is consistent with the width of the second exhaust groove.

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