JPH02219763A - Carrier tape - Google Patents

Abstract

PURPOSE:To make carrier tape flexible to prevent the same from disengaging from a sprocket and electronic parts from springing out from said tape by providing grooves on plastic carrier tape perpendicularly to the feed direction thereof. CONSTITUTION:A groove 4 is provided on carrier tape 1 perpendicularly to the feed direction thereof in variable cross sectional configurations in its thickness direction, e.g. V-shape, U-shape and linear cut. The groove 4 may be formed on either or both sides of the carrier tape 1 and located between recesses 2 or passing through the recess 2 or tape feed hole 3. Concerning the forming operation of the groove 4, plastic carrier tape 1 is subjected to cold forming process, whereby the recess 2, the tape feed hole 3 and the groove 4 can be formed simultaneously with a single metal die capable of meeting such three requirements.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is for inserting chipped electronic components such as resistors, capacitors, semiconductor elements, variable capacitors, and volume into electronic equipment using an automatic insertion machine or the like. This relates to a carrier tape that is convenient for mounting.

Hereinafter, the term "chip electronic components, etc." refers to the above-mentioned components.

[Conventional technology]

Electronic components used in electronic devices are becoming smaller and smaller.
Now chipped. Attaching such chipped electronic components to electronic devices manually is difficult.
It does not require advanced technology and time.

However, as the development of automatic insertion machines progresses, chip electronic components mounted on carrier tape can now be accurately attached to electronic devices in a short period of time without the use of human hands. .

In this way, in order to attach chipped electronic components to electronic equipment using an automatic insertion machine, the accuracy of the automatic insertion machine and the carrier tape becomes a problem.

Therefore, the positions of the recessed holes in the carrier tape for storing chipped electronic components and the positions of the feed holes in the carrier tape are determined by EIAJ (Electronic Industries Association of Japan Standards).

As chip electronic components have become smaller, automatic insertion machines have also become smaller and faster.

A conventional carrier tape is illustrated in FIGS. 1 and 2.

In the figure, 1 is a paper or plastic carrier tape, 2 is a recessed hole, and 3 is a feed hole of the carrier tape. In the EIAJ, the distance between the centers of the recessed holes and the distance between the centers of the sprocket holes are determined to be 4 mm.

Also, the long side of the hollow hole is 3.2 mm, and the short side is 1.6 mm.
The thickness of the plastic tape is approximately 1 mm, and the thickness of the chipped electronic component is approximately 0.6 to 0.8 mm.

The carrier tape 1 is made of paper or plastic tape, and the paper is cold and the plastic tape is hot to form the recessed holes 2 and the feed 63 using a press die (not shown).

The recessed hole may be punched as shown in FIG. 1, or it may have an embossed bottom as shown in FIG.

A chipped electronic component (not shown) is inserted into the recessed hole 2, and a thin plastic film (not shown) is pasted from one or both of the holes to fix the chipped electronic component.

In this way, the carrier tape on which the chipped electronic components are fixed is rolled up and transported from the parts factory to the assembly factory, where it is put through an automatic insertion machine and installed into electronic equipment.

When the carrier tape is paper, it is satisfactory in terms of price, but there is a problem that the tensile strength and the strength during embossing are low. In addition, there was a problem in that the paper fibers flew out and clogged the vacuum bottle set that adsorbs chipped electronic components, or they contaminated the clean room.

If the carrier tape is made of plastic, it can compensate for the disadvantages of paper, but it requires hot processing, which poses a cost problem.

Therefore, the applicant of this patent has proposed a cold processing method for plastic carrier tape.

[Problem that the invention seeks to solve]

However, as electronic components made into chips have become smaller, automatic insertion machines have also become smaller. That is, in an automatic insertion machine, the carrier tape passes through a small-diameter guiding or driving sprocket gear. At this time, if the thickness of the carrier tape approaches the diameter of the gear, the carrier tape will not be able to bend along the gear and will come off the sprocket of the gear, causing an accident. There was a problem.

Also, when the carrier tape passes through a gear with a small diameter,
There is a problem in that the carrier tape acts like a spring, causing the chipped electronic components to bounce and fly out from between the carrier tape and the plastic film.

Furthermore, there is a problem in that the lead wires of the chipped electronic components protrude from the recessed holes in various directions, adversely affecting the movement of the automatic insertion machine and causing the automatic insertion machine to malfunction.

In order to solve the above-mentioned problems, the present invention provides flexibility to the carrier tape to prevent accidents such as the carrier tape falling off from the sprocket or accidents in which chipped electronic components jump out from the carrier tape. The purpose is to provide a carrier tape.

Furthermore, the present invention is applicable not only to chipped electronic components, but also to
It is an object of the present invention to provide a carrier tape that can accommodate even electronic components having lead wires and prevents an automatic insertion machine from malfunctioning.

[Means for solving problems]

The present invention aims to solve the above problems,
Therefore, in the carrier tape of the present invention, in a carrier tape having a recessed hole for accommodating a chipped electronic component, etc. and a tape feeding hole, the thickness of the tape is reduced on at least one of the front or back surface of the plastic tape. The tape is characterized by having grooves perpendicular to the tape feeding direction. This will be explained below with reference to FIG.

〔Example〕

FIG. 3 illustrates an embodiment of the carrier tape according to the present invention.

In the figure, 1 is a carrier tape made of plastic tape, 2 is a recessed hole, and it is shown as having no bottom.
It may also have an embossed bottom as shown in Figure 2.
Furthermore, other deformed recessed holes may also be used.

3 is a tape feeding hole, and 4 is a beach. As shown in FIG. 3, this groove 4 is provided in a direction perpendicular to the feeding direction of the carrier tape 1, and the cross section of the carrier tape 1 in the thickness direction is formed into a V-shape, a U-shape, or a straight line. There are various deformations such as shaped kerfs.

Although this beach is provided on the front and back sides of the carrier tape 1, it may be provided on either one or both sides.

In addition, the locations for installing section 4 are hollow hole 2 and hollow hole 2.
It may be the part that spans the recessed hole 2 or the part that spans the tape feed hole 3 between the tape.

FIG. 4 is a diagram illustrating an embodiment of the groove in the present invention, and is a top view of the carrier tape 1. FIG.

Some examples of grooves other than those shown in FIG. 3 will be listed below.

In FIG. 4, (a) is provided with a straight kerf.

In (b), a plurality of straight kerfs are provided. <C) is V-shaped, and its cross section may be either a punch or a cut. In this case, the tape should be symmetrical with respect to the center line in the tape's traveling direction. (d) is of the opposite type to (c).

(E) shows an inclined straight line, but the direction of movement may be opposite to this.

In short, the grooves 4 are used to make the carrier tape 1 flexible, so they can be either punched or cut grooves.If the carrier tape 1 is to be made flexible, the company name can be inserted and that part made thinner. You can also leave it there.

However, in this case, the tape may bend to one side depending on the characters, so it is best to type the tape so that it does not bend.

Next, manufacturing of the groove 4 will be explained.

The plastic carrier tape 1 is formed simultaneously in the cold in one mold (not shown) having three stages: a recessed hole 2, a tape feed hole 3, and a hole 4.

For example, the first stage of the mold is for forming the recessed hole 2, the second stage is for forming the tape feed hole 3, and the third stage is for forming the groove 4 to make the carrier tape 1 flexible. It is a type for.

Note that kerfs can be created by changing the width of the unevenness of the mold or by making the width narrower and sharper.

A chipped electronic component (not shown) is inserted into the recessed hole 2 of the carrier tape 1 thus formed, and a plastic film (not shown) is pasted thereon. At this time, in the case of electronic components that have lead wires,
The lead wire is inserted into the groove 4 which makes the tape flexible.

Therefore, since the lead wires of the electronic components having lead wires are always aligned in a fixed direction, the automatic insertion machine will not malfunction.

〔Effect of the invention〕

As explained above, according to the present invention, since the grooves are provided in the direction perpendicular to the traveling direction of the carrier tape, the carrier tape has a certain degree of strength in the longitudinal direction and can be easily wound around a small gear at high speed. It is possible to provide an excellent carrier tape that does not fall off the sprocket even when the carrier tape is driven or driven.

Further, according to the present invention, it is possible to provide an excellent carrier tape in which chipped electronic components do not fly out even when the carrier tape is wrapped around a small-diameter gear.

Furthermore, according to the present invention, the grooves in which the carrier tape is made flexible can accommodate the lead wires of electronic components having lead wires, so that failures of the automatic insertion machine can be prevented.

That is, according to the present invention, it is an object of the present invention to provide an excellent carrier tape that can perform two functions at the same time: flexibility of the carrier tape and storage of lead wires of electronic components having lead wires, simply by providing grooves. Can be done.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of a conventional plastic carrier tape, FIG. 3 is an explanatory diagram of a carrier tape according to the present invention, and FIG. 4 is a top view of the carrier tape illustrating the shape of grooves and the like. In the figure, 1 represents a carrier tape, 2 a recessed hole, 3 a deep feeding hole, and 4 a groove. Figure 1 Figure 3 Figure 2 Figure 4 (A) (A) (C) (D) (E)

Claims (5)

[Claims] (1) In a carrier tape having a recessed hole for accommodating a chipped electronic component, etc. and a tape feeding hole, a groove is formed on at least one of the front or back surface of the plastic tape to reduce the thickness of the tape. A carrier tape characterized by being provided in a direction perpendicular to the feeding direction of the carrier tape. (2) The carrier tape according to claim 1, wherein the groove is provided at at least one location between the recessed holes and at a location spanning the recessed holes. . (3) The recessed hole, the feed hole, and the groove are formed simultaneously in a cold mold by changing stages within one mold. carrier tape. (4) The shape of the groove is V in the thickness direction of the carrier tape.
The carrier tape according to claim 1, characterized in that the carrier tape comprises at least one of a shape, a U-shape, or a cut groove. (5) The shape of the groove has a line portion inclined with respect to the traveling direction of the carrier tape, such as a V shape when viewed from the top surface of the carrier tape.
Carrier tape as described in section.