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Groove-carving die of ceramic shell and method for processing leadless ceramic shell by using groove-carving die

A ceramic shell and processing method technology, applied to ceramic molding machines, manufacturing tools, etc., can solve problems such as scratches on the metallized layer, inconvenient operation, and hidden dangers left by the quality of the coating, so as to avoid damage, improve reliability, and improve Yield Effect

Active Publication Date: 2011-04-13
JIANGSU PROVINCE YIXING ELECTRONICS DEVICE GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the shape of the leadless shell is generally small, it is very inconvenient to operate when it is bundled with thin copper wire, which is not conducive to large-scale industrial production.
Moreover, it is easy to cause scratches on the metallized layer during bundling, which affects the yield of the product. After electroplating, the position bound by the fine copper wire will leave scratches, and the quality of the coating will leave hidden dangers, which will affect the reliability of the shell.

Method used

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  • Groove-carving die of ceramic shell and method for processing leadless ceramic shell by using groove-carving die
  • Groove-carving die of ceramic shell and method for processing leadless ceramic shell by using groove-carving die
  • Groove-carving die of ceramic shell and method for processing leadless ceramic shell by using groove-carving die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Install the punch in the mold for grooving on the pneumatic punching machine for use; at the same time, place the raw porcelain blank to be processed on a constant temperature heater at a temperature of 70°C to 80°C to soften for 2.5 minutes;

[0027] (2) The thickness of the green porcelain piece to be grooved is 2 mm; place the softened green porcelain piece blank on the flat mold of the groove-cutting mold, and then place the punch on the green porcelain piece, and fix the flat plate Die and punch, start the punching machine, apply 0.6 MPa pressure to the punch and flat die, and then the groove that is consistent with the knife edge on the punch can be carved on the green porcelain piece. Grooves are first made on the front side of the raw porcelain blanks; then the same method is used to carve grooves on the reverse side of the raw porcelain blanks. The depth of the groove on the front and back of the green porcelain blank is consistent with the depth of the pun...

Embodiment 2

[0033] (1) Install the punch in the mold for grooving on the pneumatic punching machine for use; at the same time, place the raw porcelain blank to be processed on a constant temperature heater at a temperature of 70°C to 80°C to soften for 5 minutes;

[0034] (2) The thickness of the green porcelain piece to be grooved is 4mm; put the softened green porcelain piece blank on the flat plate mold of the groove-cutting mold, and then put the punch on the green porcelain piece, and fix the flat plate Die and punch, start the punching machine, apply 0.6 MPa pressure to the punch and flat die, and then the groove that is consistent with the knife edge on the punch can be carved on the green porcelain piece. Grooves are first made on the front side of the raw porcelain blanks; then the same method is used to carve grooves on the reverse side of the raw porcelain blanks. The depth of the groove on the front and back of the green porcelain blank is consistent with the depth of the punc...

Embodiment 3

[0040] (1) Install the punch in the mold for grooving on the pneumatic punching machine for use; at the same time, place the raw porcelain blank to be processed on a constant temperature heater at a temperature of 70°C to 80°C to soften for 8 minutes;

[0041] (2) The thickness of the green porcelain piece to be grooved is 7mm; put the softened green porcelain piece blank on the flat mold of the groove-cutting mold, and then put the punch on the green porcelain piece, and fix the flat plate Die and punch, start the punching machine, apply 0.75MPa pressure to the punch and flat die, you can carve a groove on the raw porcelain piece that is consistent with the knife edge on the punch. Grooves are first made on the front side of the raw porcelain blanks; then the same method is used to carve grooves on the reverse side of the raw porcelain blanks. The depth of the groove on the front and back of the green porcelain blank is consistent with the depth of the punch edge, that is, th...

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Abstract

The invention discloses a groove-carving die of a leadless ceramic shell, which comprises a flat die for placing a green ceramic piece to be carved with a groove, and a male die of which the size is adaptive to that of the flat die, wherein one surface of the male die is provided with a cutting edge which is adaptive to a single ceramic blank on the green ceramic piece to be carved with the groove; the brim of the male die is provided with a cutting edge which is convenient to cut; and corresponding positions on the flat die and the male die are provided with mounting holes. The invention also discloses a method for processing the leadless ceramic shell by using the groove-carving die. The formed green ceramic piece does not appear singly, but dozens of the products are connected to one ceramic chip, and wiring grooves meeting the requirement on the size of a single product are carved on the positive side and the negative side of the ceramic chip, so the green ceramic piece is particular suitable for the leadless type ceramic shells; and after electroplating, the groove-carving die not only improves the product yield, but also greatly improves the product reliability, because no bundling trace is left on a clad layer to avoid the hidden trouble of clad layer damages.

Description

technical field [0001] The invention relates to a double-sided groove-grooving mold for a ceramic shell for a leadless photoelectric coupling device, and a method for processing the leadless ceramic shell by using the mold, and is especially suitable for improving the production process of the leadless chip carrier ceramic shell. It belongs to the technical field of ceramic shell production; Background technique [0002] Ceramic casing is a basic industry for chip packaging. The improvement of ceramic casing production technology is a necessary condition for the development of chip packaging and a basic guarantee for the development of electronic technology. At present, the research on the production technology of ceramic shells is developing towards industrialization, and the acceptance level is upgraded to the aerospace level. The electroplating of the traditional leadless casing is to directly bundle the thin copper wires on the metallized layer of the casing for electro...

Claims

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Application Information

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IPC IPC(8): B28B7/00B28B1/00
Inventor 孙炳华李裕洪陈云宋旭烽张军峰李杰
Owner JIANGSU PROVINCE YIXING ELECTRONICS DEVICE GENERAL FACTORY