JPH0676659A - Manufacture of flat cable circuit - Google Patents

Abstract

PURPOSE:To form a circuit pattern of a flat cable at small intervals. CONSTITUTION:Metal foil 12 laminated over a carrier tape 11 by a laminator 13 is punched along a circuit pattern by the punch die 16a of a half-cut press 14a. The metal foil is then punched by the punch die 16b of a half-cut press 14b along a new circuit pattern complementing the preformed circuit pattern so as to refine the circuit pattern, and then the unnecessary portion 12' of the metal foil 12 is removed using a winding roller 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a flat cable circuit used for wiring various electric devices.

[0002]

2. Description of the Related Art Conventionally, in order to form a circuit pattern of this type of flat cable, for example, as shown in FIG. 5, a metal foil 2 is laminated on a carrier tape 1 by a laminator 3 and a half cut press 4 is used. Only the metal foil 2 is punched out according to the circuit pattern, and the remaining unnecessary portion 2 ′ is wound around the winding roller 5 and removed. In order to punch out this metal foil 2, a plurality of cutting blades 6 as shown in FIG.
A so-called big mold in which a and 6b are embedded in a wooden mold 8 via a spacer 7 is used. As the cutting blades 6a and 6b, a double-sided cutting blade 6a in which both surfaces of the cutting edge are inclined as shown in FIG. 6 (a) or a single-sided cutting edge in which only one surface of the cutting edge is inclined as shown in FIG. 6 (b) Cutting blades 6b are used and are combined according to the intervals of the circuit patterns to be punched.

[0003]

However, in the above-mentioned conventional method, as the connectors and the like to be connected become smaller in size as in recent years, it is necessary to narrow the distance between the circuit patterns of the flat cable, and the cutting edges 6a, 6b. Blade edge spacing P
It is necessary to narrow 1, P2, P3, but there is a limit to narrowing the cutting edge pitch P1, P2, P3 due to the structure of the Viku type, and it is impossible to form a fine circuit pattern. There is.

In order to solve this, it is possible to use a mold capable of forming a fine structure by electric discharge machining, but the mold is expensive and becomes a heavy economical burden.

The object of the present invention is to solve the above problems,
It is an object of the present invention to provide a method for manufacturing a flat cable circuit capable of forming a fine circuit pattern by using a conventional Biku type.

[0006]

A method of manufacturing a flat cable circuit according to the present invention for achieving the above-mentioned object, comprises:
When the laminated metal foils are punched out to form a circuit pattern in the flat cable manufacturing process, the same region of the metal foils is punched in plural times by separate punching dies.

[0007]

According to the method of manufacturing the flat cable circuit having the above-described structure, a plurality of punching dies for punching the metal foil are prepared, and the same region of the metal foil is punched in a plurality of times.
Form a fine circuit pattern.

[0008]

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 process chart of this embodiment, in which only a laminator 13 for laminating the carrier tape 11 and the metal foil 12 and only the laminated metal foil 12 are arranged in the moving direction of the carrier tape 11 and the metal foil 12. Half-cut presses 14a and 14b for punching, and a take-up roller 15 for taking up the unnecessary portion 12 'of the punched metal foil 12 are provided. Further, the half-cut press 14a is provided with a cutting die 16a having a cutting edge pattern corresponding to the circuit pattern to be punched as shown in FIG. 2, and similarly, the half-cut press 14b is provided with a circuit pattern punch as shown in FIG. A cutting edge pattern corresponding to the mold 16b is provided.

Here, the punching portion of the circuit pattern shown in FIG.
A1, A2, A3, A4 and punched part B of the circuit pattern shown in FIG.
1, B2, B3, and B4 are punched parts A1, B1, and A, which finally enter alternately as shown in FIG. 4, by matching the positioning parts 17 provided around the punching dies 16a and 16b.
2, B2, A3, B3, A4, B4 are formed.

That is, the metal foil 12 is first punched by the punching die 16a of the half-cut press 14a into a circuit pattern as shown in FIG. 2 to form punched portions A1, A2, A3, A4. Next, the metal foil 12 provided with the punched parts A1 to A4 is moved and accurately positioned using the positioning part 17 under the half-cut press 14b, and the metal foil 12 is removed from the die 16b.
When the circuit pattern as shown in FIG. 3 is punched by, the punching parts A1, B1, A2, B2, A3, B3, as shown in FIG.
A circuit pattern with a narrow interval having A4 and B4 is punched out. The unnecessary portion 1 of the punched metal foil 12
By winding 2'on the winding roller 15 and removing it, a desired circuit pattern having a narrow interval can be obtained.

Although two half-cut presses 14a and 14b are used in this embodiment, it is possible to form a finer circuit pattern by further increasing the number of half-cut presses.

[0012]

As described above, the method for manufacturing a flat cable circuit according to the present invention uses a plurality of punching dies,
Fine circuit patterns can be formed by sequentially punching so as to complement the circuit patterns formed by the preceding punching.

[Brief description of drawings]

FIG. 1 is a process drawing of an example.

FIG. 2 is a plan view of a punching circuit pattern.

FIG. 3 is a plan view of a punching circuit pattern.

FIG. 4 is a plan view of a completed circuit pattern.

FIG. 5 is a process diagram of a conventional example.

FIG. 6 is a cross-sectional view of a Viku type.

[Explanation of symbols]

 11 Carrier Tape 12 Metal Foil 13 Laminator 14a, 14b Half Cut Press 15 Winding Roller 16a, 16b Die

Claims (1)

[Claims] 1. In the case of forming a circuit pattern by punching out laminated metal foils in a flat cable manufacturing process, the same region of the metal foils is punched out in a plurality of times by separate punching dies. Cable circuit manufacturing method.