JPH0662173B2 - Carrier tape - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a carrier tape which is convenient for mounting chipped electronic components in electronic equipment by an automatic insertion machine.

[Prior art]

Since components used in electronic devices have been downsized and have been made into chips, manually mounting such electronic components on electronic devices requires high technology and time. However, with the development of automatic insertion machines, chipped electronic components have been mounted on carrier tapes and can be accurately attached to electronic devices in a short time without using human hands. In this way, in order for the chipped electronic parts to be attached accurately and in a short time by the automatic insertion machine, not only the automatic insertion machine,
The accuracy of the carrier tape is also a problem.

Therefore, the mounting position of the electronic component made into a chip and the position of the feed hole of the carrier tape are defined by the JIS standard.

FIG. 2 shows an explanatory view of a conventional carrier tape.

FIG. 2 (a) is a schematic diagram of a carrier tape, and FIG. 2 (b).
Shows a cross-sectional view of the carrier tape, and FIG. 2C shows a cross-sectional view of the carrier tape in the first step.

In the figure, 1 is a carrier tape, 2 is a hollow hole, 3 is a tape feed hole, 4 is a through hole, and 4 ″ is a through hole formed by forming a hollow hole.

First, the manufacturing process of the carrier tape will be described with reference to FIGS.

In the first step, the carrier tape 1 is provided with the tape feed hole 3,
A through hole 4 for preventing cracking of the recessed hole 2 for accommodating a chipped electronic component is provided.

In the second step, the depression hole 2 is formed by crushing from just above the through hole 4 with a press die (not shown) that is slightly larger than the through hole 4. At this time, the plastic meat is gathered from all sides to form a bottom having a narrowed through hole 4 ″ at the center of the recess hole 2.

Further, when the press die has a shape in which the length in the direction perpendicular to the carrier tape 1 is the same as the length of the recessed hole 2 and the width thereof is smaller than the recessed hole 2, the plastic meat comes from two sides. The narrowed through holes 4 ″ having the same length as the recessed hole 2 and a narrow width are left together.

In this way, a carrier tape having no recessed holes 2 was manufactured.

And electronic components chipped (not shown)
After being inserted into the recessed hole 2, a plastic film (not shown) was attached from the upper surface, and the film was put on an automatic insertion machine.

[Problems to be Solved by the Invention]

However, in the conventional carrier tape, the extrusion process is always performed from the upper surface of the carrier tape, the processing rate is different between the recessed hole on the upper surface and the through hole on the lower surface, and there are many uneven openings in the upper part. There was a problem that it was easy to bend in the direction.

Further, since the carrier tape is extruded only from the surface in one direction, an imbalance occurs in flexibility, and when the carrier tape feeding roller or the supporting roller having a small diameter is passed at a high speed, the carrier tape is unbalanced. There was a problem that it could go off the mark.

In order to eliminate the above problems, it is an object of the present invention to provide a carrier tape in which the processing rates of the upper surface and the lower surface of the carrier tape are substantially the same.

Another object of the present invention is to provide a carrier tape capable of controlling the degree of curvature or flexibility of the carrier tape.

[Means for Solving the Problems]

The carrier tape of the present invention has a carrier tape feed hole,
Only one of the carrier tapes has an opening and has a recess hole capable of accommodating a chipped electronic component, and a recess having an opening on the other surface of the carrier tape between the recess hole and the recess hole. , And an adjusting portion including an overlapping portion provided at the bottom of the recess.

Further, the carrier tape of the present invention comprises a recess provided on both sides of the carrier tape and an adjusting portion for adjusting the depth of the recess formed on both sides of the carrier tape.

Further, the recesses provided in the carrier tape of the present invention are not provided at intervals between the recess holes, but are provided after skipping an arbitrary number of recess holes.

[Action]

According to the present invention, even when the carrier tape passes through a sprocket gear having a small diameter for driving the carrier tape or a supporting roller having a small diameter, there is no difference in curvature or flexibility between the upper surface and the lower surface of the carrier tape. So
The carrier tape is accurate and can operate the automatic insertion machine at high speed without being separated from the sprocket or the roller.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 (a) to 1 (b).

FIG. 1 (a) is a schematic view for explaining a carrier tape which is an embodiment of the present invention, and FIG. 1 (b) is FIG. 1 (a).
FIG. 1C is a sectional view taken along the line AA of FIG.
FIG. 1 (A) is a sectional view taken along line AA and FIG. 1 (D) is a first process drawing in one embodiment of the present invention.

In FIG. 1, the same reference numerals as those in FIG. 2 indicate the same parts, and the description thereof will be omitted.

In the figure, 5 is a depression, 6 is an adjusting portion, 7 is a through-hole for forming a depression, 7'is an overlapping portion formed by forming the depression, 8 is an intermediate portion, and t and t'represent the depth of the depression. .

In order to form the carrier tape feed hole 3, the through hole 4 for forming the recess hole 2 smaller than the recess hole 2, and the recess 5 smaller than the recess 5 in the first step, as shown in FIG. The through-hole 7 is punched with a press not shown.

Next, in a second step shown in FIG. 1 (b), a die (not shown) having a size corresponding to the recess hole 2 capable of accommodating the chipped electronic component is formed from the upper surface or the lower surface of the carrier tape 1. Extrusion processing is performed from directly above the through hole 4. At the same time, extrusion is performed from directly above the depression forming through-hole 7 from a direction opposite to the depression hole 2 by a not shown depression forming die having a size corresponding to the depression 5.

By this extrusion process of the die, the meat of the carrier tape 1 is extruded from the four surfaces toward the through holes 4 or 7, and finally the bottom portion composed of the overlapping portion 4'or 7'is shown. This extrusion process is performed simultaneously by a set of dies, and the depth t of the recess 5 is determined by the thickness of the adjusting portion 6, and is determined by the size and shape of the recess hole 2 or the thickness of the carrier tape 1. It is possible to make it, and the degree is set to the best depth by experiment.

FIG. 1C shows another embodiment of the present invention. This will be described below with reference to FIG.

As shown in FIG. 1 (c), when forming the depression 5,
It is also possible to extrude both sides of the carrier tape 1. In this case, the depth t of the recess 5 in the opposite direction of the carrier tape 1 is made deeper than the depth t'of the recess 5 on the opposite side in consideration of the curvature of the carrier tape 1. .

That is, the thicknesses of t, t ′ and the intermediate portion 8 are adjusted according to the degree of curvature of the carrier tape 1. The chipped electronic component is inserted into the recessed hole 2 of the carrier tape 1 thus formed, a plastic film is attached to the upper surface thereof, and the tape is wound and shipped in a state in which it can be put into an automatic insertion machine.

Further, in addition to arranging the recesses 5 and the recess holes 2 alternately, it is possible to provide one recess 5 for every several recess holes 2 depending on the degree of curvature of the carrier tape 1.

As described above, according to the present invention, the recessed hole 2 and the recessed portion 5 are provided on the opposite side of the carrier tape 1, and the through hole 4 ″ left after the conventional extrusion process is used as the overlapping portion 7 ′. Bending can be reliably prevented.

Further, since the thickness of the overlapping portion 7'can be controlled depending on the size of the recessed hole 2 and other conditions, not only the carrier tape 1 does not bend in the recessed hole 2 of any shape, but also the carrier tape 1 can have flexibility.

〔The invention's effect〕

According to the present invention, a recess is formed on the surface of the carrier tape opposite to the surface on which the recess hole is formed, and further, the conventional through-hole provided before the extrusion is extruded to form an overlapping portion. Therefore, the carrier tape is not curved and unbalanced above and below the carrier tape, and since the carrier tape can be made flexible, the carrier tape can be fed at high speed and accurately.

According to the present invention, the curvature of the carrier tape can be prevented by changing the depth of the depression and the position of the intermediate portion, and the flexibility of the carrier tape can be provided, so that the carrier tape can be fed more accurately. Became.

According to the present invention, in order to escape the meat portion between the recessed hole and the recess, or to prevent the carrier tape from cracking, the through-hole provided in advance is extruded into an overlapping portion, so that the protruding portion or the crack is formed. It is possible to provide a high-precision carrier tape that does not have any.

[Brief description of drawings]

FIG. 1 (a) is a schematic view for explaining a carrier tape which is an embodiment of the present invention, and FIG. 1 (b) is FIG. 1 (a).
FIG. 1C is a sectional view taken along the line AA of FIG.
FIG. 1 (A) is a cross-sectional view taken along the line AA, FIG. 1 (D) is a first process drawing in one embodiment of the present invention, and FIG. 2 (A) is a schematic view of a carrier tape and FIG. ) Is a cross-sectional view of the carrier tape, and FIG. 2C is a cross-sectional view of the carrier tape in the first step. In the figure, 1 ... Carrier tape 2 ... Recessed hole 3 ... Tape feed hole 4 ... Through hole 5 ... Recessed portion 6 ... Adjusting portion 7 ... Through hole 7 "... Overlap portion for recessed portion 8 ... Middle part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumasa Ohmae 6-16-20 Ueno Taito-ku, Tokyo Inside Taiyo Induction Co., Ltd.

Claims (3)

[Claims] 1. A carrier tape having a carrier tape feed hole 3 and a recess hole 2 in which only one of the carrier tape 1 is opened and capable of accommodating a chipped electronic component, wherein the recess hole 2 and the recess hole 2 are formed. A carrier tape comprising: a recess 5 having an opening on the other surface of the carrier tape 1 and an adjusting portion 6 comprising an overlapping portion 7'provided at the bottom of the recess 5. 2. The recesses 5 are provided on both sides of the carrier tape 1, and an adjusting portion 6 capable of adjusting the depth of the recesses 5.
The carrier tape according to claim 1, wherein the carrier tape comprises: 3. The carrier tape according to claim 1, wherein the recesses 5 are provided after every arbitrary number of recessed holes 2.