JPH0550159A - Metallic foil punching device - Google Patents

Abstract

PURPOSE:To facilitate the manufacture and to punch a metallic foil in a satisfactory state by stretching plural pieces of thin cutting blades around the plate body surface along a shape of a metallic sheet to be punched, and providing a buffer material consisting of a hollow elastic tube between these cutting blades. CONSTITUTION:In a coplate consisting of a plywood, a metallic cutting blade 12 of a thin metal is stretched round to a prescribed shape to be punched, and also, between these cutting blades 12, a hollow tube 13 having elastic force of rubber, etc., is filed. When a metallic foil of a copper foil or an aluminum foil, etc., laminated to a carrier tape, etc., is pushed against a creel die 11, the upper face of the hollow tube 13 is crushed by the metallic foil and becomes flat, and the bottom side face and in a state that it contacts closely to the cutting blade 12, the metallic foil is cut by the cutting blade 12. In such a way, the metallic foil, can be punched easily and in a satisfactory state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal foil punching device for punching a metal foil used for a flat cable or the like.

[0002]

2. Description of the Related Art Conventionally, in order to punch a metal foil, which is a conductor of a flat cable, into a predetermined shape, a so-called big type in which a cutting edge is embedded in a plywood is used.

FIG. 4 is a perspective view of the large die 1 in which a plurality of cutting blades 2 are stretched in a predetermined shape. In general,
A cushioning material 3 is arranged between the cutting blades 2 so that the metal foil to be punched does not fit therein.

FIG. 5 is a sectional view of the large die 1 showing a state in which the cushioning material 3 is arranged between the cutting blades 2. Usually, as the cushioning material 3, a sponge-like material is cut into an appropriate size and is embedded between the cutting blades 2, or a rubber sheet or the like is used as the cushion 1.
It is cut by being placed on the whole and pressed, and embedded between the cutting blades 2.

[0005]

However, in the above-mentioned conventional example, a troublesome manual work of cutting and adhering the cushioning material 3 in accordance with the gap of the cutting edge 2 is required, or the rubber sheet is embedded by press cutting in advance. It is also necessary to strictly adjust the cushioning material 3 to the sectional shape between the cutting blades 2, which is very troublesome.

An object of the present invention is to solve the above problems,
It is an object of the present invention to provide a metal foil punching device capable of omitting troublesome manual work and embedding a cushioning material in conformity with a cross-sectional shape between cutting edges.

[0007]

In order to achieve the above-mentioned object, a metal foil punching device according to the present invention has a plurality of thin cutting blades formed on a plate surface along a shape of a metal thin plate to be punched. A cushioning material made of a hollow elastic tube is arranged between these cutting blades.

[0008]

In the punching device for metal foil having the above-mentioned structure, a hollow elastic tube is pushed between the cutting blades so that the metal foils come into close contact with each other as a cushioning material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a perspective view of the bicycle type 11,
A thin metal cutting blade 12 is stretched around a predetermined shape to be punched on the two sheets of plywood, and a hollow tube 13 having elasticity such as rubber is filled between the cutting blades 12. FIG. 2 is an enlarged cross-sectional view of the big mold 11, showing a state in which a hollow tube 13 is embedded between the cutting blades 12.

When a metal foil 15 such as a copper foil or an aluminum foil laminated on a carrier tape 14 or the like is pressed against the V-shaped mold 11, the hollow tube 1 as shown in FIG.
The upper surface of 3 is flattened by being crushed by the metal foil 15, and the side surface of the bottom surface is expanded and in close contact with the cutting blade 12, and the metal foil 15 is cut by the cutting blade 12.

Therefore, since the cross-sectional shape between the cutting blades 12 is always in the optimum shape in close contact with the cutting blades 12, even if the pressed metal foil 15 is cut, the metal foils 15 are fitted between the cutting blades 12. It does not get stuck, have a curved surface, burrs, or distortion.

Further, the shape to be punched is changed and the cutting edge 12 is changed.
Even in the case of changing the interval between them, it becomes possible to achieve the optimum state by selecting and filling the hollow tube 13 having a size corresponding to the interval.

[0013]

As described above, the punching device for metal foil according to the present invention can be easily manufactured by filling a hollow elastic tube as a cushioning material between the cutting edges.

[Brief description of drawings]

FIG. 1 is a perspective view of a big type of an embodiment.

FIG. 2 is a cross-sectional view in which a hollow tube is embedded between cutting blades.

FIG. 3 is a cross-sectional view when cutting a metal foil.

FIG. 4 is a perspective view of a conventional Viku type.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 11 Big type 12 Cutting blade 13 Hollow tube 15 Metal foil

Claims (1)

[Claims] 1. A plurality of thin cutting blades are stretched around a plate surface along the shape of a thin metal plate to be punched, and a cushioning material made of a hollow elastic tube is arranged between these cutting blades. Punching device for metal foil.