JPH09259960A - Flat cable continuous body and its mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate mounting of a cable in a substrate, by forming a continuing unit of the cable supported to a carrier in an easily cutting off condition. SOLUTION: By a plurality of flat cables applying an insulation layer 3 to central part both surfaces of a plurality of parallelly arranged conductors 2, a continuing unit supported to a carrier 1 is formed. Between the carrier 1 and both end connection parts, a notched part 11 is left as provided so as to be capable of cutting by force of connecting strength or less between a substrate 7 and the flat cable. The continuing unit of the cable is supplied to a mounting machine, after an end part 2 of the cable is connected by soldering or the like to a prescribed position of the substrate 7, in the notched part 11 or the like between the carrier 1 left as previously provided and the end part 2 of the cable, the carrier is cut of, to be removed. Further, in order to set the cable to a prescribed position of the substrate 7, it is preferable to provide a mark or the like for positioning in the carrier 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable for wiring in electronic equipment and component mounting using the flat cable. More specifically, the present invention supplies a flat cable with a carrier, connects the flat cable terminal portion to a predetermined position by soldering or the like, and then cuts off the carrier to facilitate component mounting. To aim.

[0002]

2. Description of the Related Art A conductive strip-shaped plate material provided with a carrier is punched and provided with connecting terminals at both ends, and a plurality of continuous conductive wires are arranged in parallel along the width direction of the strip-shaped plate material. A plurality of conductive wires are arranged in parallel by forming an object, applying insulating tape on both sides, leaving the connection terminals at both ends, and then cutting the carrier, and at both ends of the plurality of conductive wires. A flat cable having connection terminals is disclosed in Japanese Patent Laid-Open No. 5-298939. However, the flat cable is cut into individual pieces at the manufacturing stage and is supplied separately for mounting.

[0003]

[Problems to be Solved by the Invention] With the miniaturization of electronic devices, the demand for higher density mounting of components has become more and more demanding, and the flat cable described above has been made thinner and plate pitched. . The thin, soft and improved product is supplied to the automatic component mounter as a single product, so the shape cannot be retained when picked up by suction, and the positioning, soldering connection, etc. to the board, like other electronic components, can be performed by a machine. Therefore, it was difficult to carry out automatically.

[0004]

Means for Solving the Problems As a result of various studies on the above problems, the present inventors have supplied a plurality of flat cables to a mounting machine while being continuously supported by a carrier.
After connecting the end of the flat cable to the predetermined position of the board by soldering, etc., remove the carrier by cutting the carrier at the notch part between the carrier and the end of the flat cable that was previously provided As a result, they have found that the above problems can be solved, and completed the present invention.

That is, the present invention has the following features. . For example, a punching process is performed on a conductive strip-shaped plate material, and a plurality of conductive wires having connection portions at both ends are formed in a state where they are arranged in parallel in the width direction of the conductive strip-shaped plate material with a carrier, and the conductive Insulation layers should be provided on both sides for each specified number of wires. . To make it easy to separate the carrier from the connecting parts at both ends by providing a notch so that it can be cut with a force less than the connection strength between the substrate and the flat cable between the carrier and the connecting parts at both ends. . . A flat cable in which a predetermined number of conductive wires are arranged in parallel and an insulating layer is provided on each side of the flat cable is continuously supported by a plurality of carriers. (However, the method for producing a continuous body of flat cables is not limited to the method of.). The carrier is equipped with means for positioning the flat cable. . After supplying the flat cable continuum to the mounting machine and connecting the flat cable end to the predetermined position on the board by soldering, etc., use it for the notch etc. between the carrier and the end of the flat cable that were provided in advance. At this time, cut off the carrier and remove it.

The present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view showing a state where a plurality of flat cable continuous bodies of the present invention are supplied to a mounting machine, soldering is applied to predetermined positions on a substrate, and then the carrier is removed. It is also possible to connect by spot welding instead of soldering.

FIG. 2 shows a conductor end portion 2 and a land portion 1 of the substrate 7.
Soldered with 0 and the carrier 1 is still attached.

FIG. 3 is an enlarged view of a soldering portion,
An example in which a notch 11 is provided in order to facilitate cutting of the carrier 1 and the conductor end portion 2 is shown. In addition to such cuts, a method of making perforations is also effective.

FIG. 4 shows a state after the carrier is cut off.

FIG. 5 shows another example of the flat cable continuum of the present invention. The conductors 12 are arranged in parallel with the carrier 13. After each flat cable is soldered to the substrate 14, perforations are inserted near the carrier 13 in the insulating layer of the flat cable to facilitate removal of the carriers. Can be kept. Further, the carrier 13 can be formed by laminating an insulating film on a dummy conductor. Further, it is also effective to provide a mark or the like for positioning the flat cable on the carrier in order to set the flat cable at a predetermined position on the substrate.

[0011]

[Examples] Rectangular phosphor bronze having a thickness of 0.8 mm and a width of 25 mm was provided with rectangular perforated portions of 19 mm × 0.5 mm at an interval of 0.8.
The holes were punched at regular intervals using a metal mold.

Next, 19 mm × 3.2 mm rectangular perforated portions are perforated at equal intervals of 8.8 mm using a mold, and together with the previous perforation processing, a conductor 6 having a width of 0.3 mm is formed.
A set of books arranged at a pitch of 0.8 mm was used as a lump, and the lumps formed a continuous body supported by a carrier at an interval of 8.8 mm.

On both sides of the perforated band-shaped phosphor bronze,
A polyimide tape with an adhesive having a thickness of 0.065 mm and a width of 9 mm was laminated. This insulating layer is
× Partly cut and removed according to the perforated part of 3.2 mm,
As a result, a plurality of 6-core flat cables having a width of 0.3 mm and a pitch of 0.8 mm were continuously supported by the carrier.

Next, a pilot hole was provided in the carrier for positioning the flat cable. For positioning the flat cable, the same effect can be obtained not only by providing the pilot hole but also by providing the carrier with irregularities or notches.

Next, in order to easily separate the conductor end portion and the carrier, notches were formed in the conductor end portion near the carrier, respectively.

The flat cable continuum thus obtained is supplied to a mounting machine, the conductor end is aligned with the land portion of the board by a sprocket with the pilot hole as a mark, and the flat cable is lowered while keeping it horizontal. Let
After bringing the conductor end portion and the substrate land portion into contact with each other, soldering was performed on each.

Thereafter, the carrier could be easily cut and removed by lifting the carrier with a force equal to or lower than the connection strength, cutting the flat cable, and winding the carrier on a reel. In this way, one cycle of soldering the flat cable to the land portion of the substrate is completed, then the next substrate is supplied and set, and the next flat cable is soldered in the same manner as above.

Thus, the soldering work of a large number of sets could be automatically performed one after another.

[0019]

As described above, the flat cable continuous to the substrate is formed by forming a continuous body of the flat cable supported by the carrier in the easy-to-cut state and supplying the continuous body as it is to the mounting machine. Can be implemented extremely mechanically.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a state where a continuous body of flat cables according to the present invention is supplied to a mounting machine, a conductor end is soldered to a predetermined position on a substrate, and then a carrier is cut off and removed. Is.

FIG. 2 shows a state in which a carrier end is soldered to a conductor end portion and a land portion of a substrate, and a carrier is still attached.

FIG. 3 is an enlarged view of a soldered portion.

FIG. 4 shows a state after the carrier is cut off.

FIG. 5 illustrates another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Carrier 2 ... Conductor end part 3 ... Insulating layer 4 ... Flat cable continuous body supply reel 5 ... Carrier winding reel 6 ... Sprocket 7 ... Substrate 8 ... Pilot hole 9 ... Soldering part 10 ... Board land 11 ... Notch 12 ... Conductor 13 ... Carrier 14 ... Board 15 ... Perforation

Claims (3)

[Claims] 1. A continuous body in which a plurality of flat cables in which insulating layers are provided on both sides of a central portion of a plurality of conductors arranged in parallel are supported by a carrier, and the flat cable and the carrier are separated from each other. A continuous body of flat cables characterized by being provided with means for facilitating. 2. A continuum of flat cables according to claim 1, wherein the carrier is provided with means for positioning the flat cables. 3. A method of mounting a flat cable, comprising supplying a continuous body of the flat cable to a predetermined position of a substrate, fixing a conductor of the flat cable to the predetermined position of the substrate, and then cutting the carrier.