A ceramic housing with a V-shaped cavity and a manufacturing method thereof

Abstract

The application provides a ceramic shell with a V-shaped cavity and a manufacturing method thereof, and the method comprises the following steps: preparing a green ceramic sheet, which is divided into a bottom sheet, a middle sheet and an upper sheet; punching the upper sheet and the middle sheet; printing a metal circuit on the first middle sheet unit; laminating the second middle sheet unit and processing a bevel by using a laser puncher to obtain a ceramic sheet layer with a V-shaped cavity; cutting the first middle sheet unit along the edge of the second cavity to obtain a cutting mark; pressing the first middle sheet unit and the ceramic sheet layer into a middle sheet by using a shaping laminating plate; laminating the bottom sheet, the middle sheet and the upper sheet in sequence, and then laminating to obtain a blank; cutting the blank into m blank units; and sintering the blank units to obtain ceramic units. The manufacturing method can be used to manufacture the ceramic shell with the V-shaped cavity, thereby increasing the light receiving area of the optical coupler.

Description

Technical Field

[0001] The invention relates to the technical field of optical coupler housing molding, in particular to a ceramic housing with a V-shaped cavity and a manufacturing method thereof. Background Art

[0002] A photocoupler is an electro-optical-electrical conversion device that uses light as a medium to transmit electrical signals. It consists of a light source and a light receiver, both of which are assembled within a ceramic housing. The traditional manufacturing process for ceramic housings involves preparing a ceramic slurry, applying the slurry to tape-casting to produce green sheets, punching vertical cavities on each sheet, printing circuits on the sheets, laminating the sheets, and compacting the tapes before slitting to create multiple green housing units. These units are then sintered.

[0003] In the traditional manufacturing method, after punching out the vertical cavity, the green ceramic sheets are stacked together for lamination. Therefore, the inner cavity of the ceramic shell manufactured in the above manner is a vertical cavity 7. The structure of the ceramic shell is as follows: Figure 1 The ceramic housing with a vertical cavity has low light receiving efficiency and does not meet the requirements of further product development. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a ceramic housing with a V-shaped cavity and a manufacturing method thereof, which can directly manufacture the ceramic housing with the V-shaped cavity and increase the light receiving area of ​​the optical coupler.

[0005] In a first aspect, the present invention provides a method for manufacturing a ceramic housing with a V-shaped cavity, comprising the following steps:

[0006] S1. Prepare green ceramic sheets and divide them into bottom sheet, middle sheet and top sheet in the order of stacking; the middle sheet includes a first middle sheet unit and n second middle sheet units; the number n is set according to the required number of layers of the product.

[0007] S2, punching the upper sheet, the first middle sheet unit, and the second middle sheet unit respectively, punching out a first cavity on the upper sheet, a second cavity on the first middle sheet unit, and a third cavity on the second middle sheet unit;

[0008] S3, printing metal circuits on the first mid-sheet unit;

[0009] S4, after stacking n second middle slice units, perform lamination processing, and use a laser punching machine to process the inclined surface to obtain a ceramic tile layer with a V-shaped cavity;

[0010] S5, performing a cutting process on the first middle piece unit along the edge of the second cavity;

[0011] S6, pressing the tile layer and the first middle plate unit processed in step S5 into a middle plate with a V-shaped cavity through a shaped laminate;

[0012] S7, stacking the bottom sheet, the middle sheet, and the top sheet in the order of stacking, and performing a lamination process to obtain a green body;

[0013] S8, cutting the green body into m green body units;

[0014] S9. Sintering the green body unit to obtain a ceramic unit.

[0015] Furthermore, the steps for making the green porcelain sheet are as follows:

[0016] S11, ball-milling ceramic powder, a binder, a dispersant, a plasticizer, and a solvent in a certain proportion for a certain time to form a ceramic slurry;

[0017] S12, tape-casting the ceramic slurry formed in step S11 to obtain a green ceramic sheet.

[0018] Furthermore, after completing step S6, excess porcelain is trimmed along the edge of the V-shaped cavity.

[0019] Furthermore, the ceramic unit is subjected to chemical plating, brazing and electroplating treatments.

[0020] Furthermore, the metallized circuits are printed on the top of the first mid-sheet unit, and after step S6, the metallized circuits are distributed on the straight section and the inclined section of the first mid-sheet unit, and the metallized circuits on the straight section and the inclined section are connected.

[0021] Furthermore, the cutting marks are provided on the left and right edges of the second cavity.

[0022] In a second aspect, the present invention provides a ceramic shell with a V-shaped cavity, comprising a bottom plate, a middle plate and an upper plate, wherein the middle plate is arranged on the top of the bottom plate, the middle plate is provided with a V-shaped cavity, the upper plate is arranged on the top of the middle plate, and the upper plate is provided with a square cavity connected to the V-shaped cavity.

[0023] Furthermore, the included angle between the two inclined surfaces of the V-shaped cavity is greater than or equal to 90 degrees and less than or equal to 160 degrees.

[0024] The advantages of the present invention lie in: laser punching is used to create a beveled ceramic layer, metal circuits are printed on the first mid-piece unit, and cutting marks are made on the mid-piece unit along the edge of the V-shaped cavity. This allows the mid-piece unit to be attached to the ceramic layer according to the cutting marks when all the mid-piece units are laminated, without damaging the ceramic body of the mid-piece unit. The manufacturing method of the present invention enables the production of a ceramic housing with a V-shaped cavity, thereby increasing the light-receiving area of ​​the optical coupler.

[0025] The V-shaped cavity ceramic shell is a shell that combines a conventional shell and bevel accessories. Since the circuit can be directly wired on the bevel, it can be used as a replacement for the original shell without the user having to make any changes. At the same time, the bevel shell directly integrates the V-shaped bevel into the shell, eliminating the need for additional corresponding bevel accessories, which can reduce the overall shell size. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the structure of the ceramic housing of the existing optical coupler;

[0028] Figure 2 Schematic diagram of the structure of the ceramic housing of the present invention;

[0029] Figure 3 Schematic diagram of the layered structure of the sheet in the present invention;

[0030] Figure 4 Schematic diagram of the manufacturing method of the present invention;

[0031] Figure 5 This is the structure of the upper large plate of the present invention;

[0032] Figure 6 Schematic diagram of the structure of the first middle piece unit of the present invention;

[0033] Figure 7 yes Figure 6 A partial enlarged view of the middle part;

[0034] Figure 8 This is a schematic structural diagram of the first middle plate unit and the tile layer when they are stacked together;

[0035] Figure 9 This is a schematic diagram of the structure of the first middle piece unit and the tile layer of the present invention when they are in the lamination deformation direction;

[0036] Figure 10 yes Figure 9 A partial enlarged view of point B in the middle;

[0037] Figure 11This is a schematic diagram of the structure of the first middle piece unit and the tile layer placed on a shaped laminate board according to the present invention; DETAILED DESCRIPTION

[0038] See also Figures 2 to 11 In a first aspect, the present invention provides a method for manufacturing a ceramic housing with a V-shaped cavity, comprising the following steps:

[0039] S1. Prepare green ceramic sheets and divide them into bottom sheets, middle sheets and top sheets in the order of stacking; the middle sheets include a first middle sheet unit and n second middle sheet units.

[0040] S2, punching the upper sheet, the first middle sheet unit, and the second middle sheet unit respectively, punching out a first cavity on the upper sheet, a second cavity 11 on the first middle sheet unit, and a third cavity on the second middle sheet unit;

[0041] S3, printing metal circuit 9 on the first middle unit;

[0042] S4, after stacking n second middle-piece units, laminating them, and processing the inclined surface with a laser punching machine to obtain a tile layer 6 with a V-shaped cavity 4;

[0043] S5, performing a cutting process on the first middle piece unit along the edge of the second cavity;

[0044] S6, the ceramic layer and the first middle unit processed in step S5 are pressed into a middle plate with a V-shaped cavity through a shaped laminate; when the first middle unit 5 and the ceramic layer are stacked, the first middle unit is closest to the upper plate; the lamination diagram of the first middle unit 5 and the ceramic layer is as shown in FIG. Figure 9 As shown, after the first middle piece unit 5 and the tile layer are stacked, they are placed between the upper mold and the lower mold of the shaped laminate. After the upper mold is pressed together, a middle piece large plate with a V-shaped cavity is formed.

[0045] S7, stacking the bottom sheet, the middle sheet, and the top sheet in the order of stacking, and performing a lamination process to obtain a green body;

[0046] S8, cutting the green body into m green body units;

[0047] S9. Sintering the green body unit to obtain a ceramic unit.

[0048] Specifically, the steps for making the green porcelain sheet are as follows:

[0049] S11, ball-milling ceramic powder, a binder, a dispersant, a plasticizer, and a solvent in a certain proportion for a certain time to form a ceramic slurry;

[0050] S12, tape-casting the ceramic slurry formed in step S11 to obtain a green ceramic sheet.

[0051] Specifically, after completing step S6, the excess ceramic body is trimmed along the edge of the V-shaped cavity.

[0052] Specifically, the ceramic unit is subjected to chemical plating, brazing and electroplating processes.

[0053] Specifically, the metallized circuits are printed on the top of the first mid-sheet unit, and after step S6, the metallized circuits are distributed on the straight section and the inclined section of the first mid-sheet unit, and the metallized circuits on the straight section and the inclined section are connected.

[0054] Specifically, the cutting marks are provided on the left and right edges of the second cavity.

[0055] In the second aspect, the present invention provides a ceramic shell with a V-shaped cavity, including a bottom plate 1, a middle plate 2 and an upper plate 3, wherein the middle plate 2 is arranged on the top of the bottom plate, and the middle plate 2 is provided with a V-shaped cavity 4, and the upper plate is arranged on the top of the middle plate, and the upper plate is provided with a square cavity connected to the V-shaped cavity 4.

[0056] Specifically, the included angle between the two inclined surfaces of the V-shaped cavity is greater than or equal to 90 degrees and less than or equal to 160 degrees.

[0057] Green sheets are prepared and divided into top, middle, and bottom sheets according to the order in which they are stacked. The top, middle, and bottom sheets are then punched. Because the middle sheet (V-shaped layer) is thicker, the middle sheet is divided into a first middle sheet unit and n second middle sheet units for processing. The metallized area (i.e., metal circuits) is printed on the first middle sheet unit. The n processed second middle sheet units are then laminated to obtain the required middle sheet layer.

[0058] Subsequently, V-shaped bevel processing was started on the middle layer. By placing a customized pad with an angle of 30 degrees under the laser punching machine and combining it with laser punching, a ceramic layer with a V-shaped cavity was finally obtained. According to the change of the angle of the customized pad, the angle of the V-shaped cavity 4 also changed accordingly.

[0059] Laser punching is a straight-line punching method. The punching height can be set. By setting different heights, it is ensured that the punching can be punched on the inclined surface. Then the first middle unit is cut along the left and right edges of the second cavity. The cutting marks 8 are as follows. Figure 6 As shown;

[0060] The cutting mark treatment is for the subsequent lamination of the first middle piece unit 5 onto the V-shaped inclined surface on the ceramic layer. After the cutting mark, the lamination can be carried out according to the cutting lines without damaging the ceramic body. The processed first middle piece unit and the ceramic layer with the punched inclined surface are synthesized into the required middle piece large plate through a customized laminate, and then the excess ceramic body 14 (waste) on the first middle piece unit is trimmed along the bottom edge of the V-shaped cavity. Figure 8 As shown;

[0061] The upper sheet, middle sheet and bottom sheet are laminated together to obtain the required product thickness. Figure 5 The required green body is obtained by cutting along the cutting line 10 in the upper large plate, and then sent to sintering, chemical plating, brazing, and electroplating to obtain a ceramic shell product with a V-shaped cavity.

[0062] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for manufacturing a ceramic housing with a V-shaped cavity, characterized in that: The following steps are included: S1, preparing green ceramic sheets, and dividing the green ceramic sheets into bottom plate, middle plate and top plate in the order of stacking; the middle plate includes a first middle plate unit and n second middle plate units; S2, punching the upper sheet, the first middle sheet unit, and the second middle sheet unit respectively, punching out a first cavity on the upper sheet, a second cavity on the first middle sheet unit, and a third cavity on the second middle sheet unit; S3, printing metal circuits on the first mid-sheet unit; S4, after stacking n second middle slice units, perform lamination processing, and use a laser punching machine to process the inclined surface to obtain a ceramic tile layer with a V-shaped cavity; S5, performing a cutting process on the first middle piece unit along the edge of the second cavity; S6, pressing the tile layer and the first middle plate unit processed in step S5 into a middle plate with a V-shaped cavity through a shaped laminate; S7, stacking the bottom sheet, the middle sheet, and the top sheet in the order of stacking, and performing a lamination process to obtain a green body; S8, cutting the green body into m green body units; S9. Sintering the green body unit to obtain a ceramic unit.

2. The method for manufacturing a ceramic housing with a V-shaped cavity according to claim 1, wherein: The production steps of the green porcelain sheet are as follows: S11, ball-milling ceramic powder, a binder, a dispersant, a plasticizer, and a solvent in a certain proportion for a certain time to form a ceramic slurry; S12, tape-casting the ceramic slurry formed in step S11 to obtain a green ceramic sheet.

3. The method for manufacturing a ceramic housing with a V-shaped cavity according to claim 1 or 2, characterized in that: After completing step S6, the excess ceramic body is trimmed along the edge of the V-shaped cavity.

4. The method for manufacturing a ceramic housing with a V-shaped cavity according to claim 3, wherein: Electroless plating, brazing and electroplating of ceramic units.

5. The method for manufacturing a ceramic housing with a V-shaped cavity according to claim 1, wherein: The metal circuit is printed on the top of the first mid-sheet unit, and after step S6, the metal circuit is distributed on the straight section and the inclined section of the first mid-sheet unit, and the metal circuits on the straight section and the inclined section are connected.

6. The method for manufacturing a ceramic housing with a V-shaped cavity according to claim 1, wherein: The cutting marks are arranged on the left and right edges of the second cavity.

7. A ceramic housing with a V-shaped cavity, characterized in that: The ceramic shell is prepared by the manufacturing method described in claim 1, and the ceramic shell includes a bottom plate, a middle plate and an upper plate, the middle plate is arranged on the top of the bottom plate, the middle plate is provided with a V-shaped cavity, the upper plate is arranged on the top of the middle plate, and the upper plate is provided with a square cavity connected to the V-shaped cavity.

8. The ceramic housing with a V-shaped cavity according to claim 7, characterized in that: The included angle between the two inclined surfaces of the V-shaped cavity is greater than 90 degrees and less than or equal to 160 degrees.

Images