JPS5910291B2 - Ceramic sheet dividing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for dividing a ceramic sheet having dividing grooves in a parallel grid pattern on its surface.

Ceramic substrates used as insulating substrates for ICs, LSIs, and other electrical components are usually made by forming a ceramic green sheet using a doctor blade method or a rolling method. It was made by carving grooves and then firing a ceramic sheet (see FIG. 3), which was obtained by bending it along the grooves and dividing it into predetermined unit pieces.

The above method has the advantage of being able to cut out a large number of predetermined ceramic substrates from a single ceramic sheet, but in the past, each piece was broken by hand, which made the splitting process very time-consuming. It is troublesome, and there are disadvantages in that good division is not achieved and defects often occur, resulting in a very low yield.

The present invention has been made in view of the above-mentioned conventional drawbacks, and it is an object of the present invention to provide a dividing device that can simultaneously divide a ceramic sheet having dividing grooves in a grid pattern on its surface into a large number of unit pieces. , will be explained below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates an operating shaft of a known hand press (not shown in detail), and reference numeral 2 indicates a base of the press.

Reference numeral 3 denotes a press die attached to the actuating shaft end 1a by screws or other connecting members, the outer peripheral surface of which has a substantially dish-shaped curved surface.

Reference numeral 4 denotes an elastic presser plate horizontally bonded to the lower surface of the mold, and 5 is a receiving mold mounted on the base 2, which has a dish-shaped cavity 5a corresponding to the outer circumferential surface 3a of the mold 3 on its upper surface.

Reference numeral 6 denotes an elastic receiving plate fitted horizontally into the opening surface of the cavity 5a of the receiving mold, and the ceramic sheet 7 to be divided is placed on the upper surface.

As shown in FIG. 3, this ceramic sheet 7 is provided with dividing grooves 7b in a grid pattern, each of which is made up of a plurality of horizontal lines and vertical lines, on the surface 7a, and the surface 7a with the dividing grooves 7b is directed downward. It is then placed on the elastic receiving plate 6.

It is preferable that the elastic holding plate 4 and the elastic receiving plate 6 be made of rubber or synthetic resin, and that the press die 3 and the receiving die be made of a hard material such as Bakelite.

According to the dividing device of the present invention, the ceramic sheet 7 to be divided is placed on the elastic receiving plate 6 disposed on the opening surface of the cavity 5a of the receiving mold 5 mounted on the base 2 of the hand press machine. is placed with the surface 7a with the dividing groove 7b facing downward, and then the press die 3 is manually attached to the operating shaft end 1a.
When the mold is lowered and the outer peripheral surface 3a of the mold is inserted into the cavity 5a, the ceramic sheet 7 is curved along the outer peripheral surface 3a of the mold as shown in FIG. Shearing stress acts along the grid-like dividing grooves 7b, and the sheet is divided into a large number of unit pieces at the same time.

At this time, a large number of divided unit pieces are crimped between the elastic holding plate 4 and the elastic receiving plate 6, and are prevented from scattering to the outside.

In the above case, by disposing a ring-shaped elastic stopper 8 on the inner bottom surface of the cavity 5a of the receiving mold 5 as shown in FIG. There is an advantage that the shear stress acting on the grooves 7b can be dispersed and made uniform, thereby making it possible to perform division more accurately and reliably.

As described above, a dish-shaped press die is attached to the end of the operating shaft of a hand press machine, and an elastic presser plate is glued to the lower surface of the die, and a receiving die is provided with a dish-shaped cavity corresponding to the press die on the base of the press machine. According to the splitting device of the present invention, in which an elastic receiving plate is fitted to the opening surface of the cavity while the splitting device is attached,
By simply placing a ceramic sheet with grid-shaped dividing grooves on its surface on the elastic receiving plate and pressing a mold from above, the ceramic sheet can be divided simultaneously and reliably into a large number of unit pieces, which is different from conventional methods. This has the great effect of increasing division work efficiency and greatly improving yield compared to the case of manual assignment.

[Brief explanation of the drawing]

FIG. 1 is a front cross-sectional view of the ceramic sheet dividing device according to the present invention, with FIG. A showing the state before operation, and Bik showing the state where the press mold is press-fitted into the cavity of the receiving mold. FIG. 2 shows another embodiment of the present invention in a state diagram corresponding to FIG. 1B. FIG. 3 is a perspective view of a ceramic sheet used to explain the present invention. DESCRIPTION OF SYMBOLS 1... Operating shaft, 1a... End face thereof, 2... Base, 3... Dish-shaped press mold, 4... Elastic presser plate, 5...
Receiving mold, 5a... Dish-shaped cavity, 6... Elastic receiving plate, 7... Ceramic sheet.

Claims (1)

[Claims] 1 A device for dividing a ceramic sheet having dividing grooves in the form of a parallel grid on its surface, which is attached to the end of the operating shaft of a no-do press machine in the form of a plate-shaped pressing mold, and an elastic presser plate is glued to the lower surface of the pressing machine. A receiving mold having a dish-shaped cavity corresponding to the pressing mold is attached to the press machine, and an elastic receiving plate is fitted to the opening surface of the cavity, and a ceramic sheet is placed on the elastic receiving plate. A device for dividing a ceramic sheet, characterized in that it is configured to apply pressure from above.