JPH0451431B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a carrier tape that is convenient for mounting chipped electronic components into electronic equipment using an automatic insertion machine.

(2) Technical background of the invention As parts used in electronic devices are becoming smaller and chipped, it is difficult to manually attach such electronic parts to electronic devices. It required skill and time. However, as the development of automatic insertion machines progresses, chipped electronic components can now be mounted on carrier tape, allowing them to be accurately attached to electronic equipment in a short period of time without the need for human intervention. In this way, in order to be able to accurately and quickly attach chipped electronic components to electronic equipment using an automatic insertion machine,
In addition to the automatic insertion machine, the accuracy of the carrier tape is also an issue, and the mounting position of chipped electronic components and the position of the carrier tape's feed holes are determined by JIS standards.

(3) Prior art and its problems As the speed and accuracy of inserting chipped electronic components into electronic equipment using an automatic insertion machine increases, the conventional carrier tape made of paper or plastic will gradually become obsolete. However, the objective was not fully achieved.

Therefore, in order to eliminate the drawbacks caused by the elongation of the conventional carrier tape, the carrier tape as shown in FIG. ) from the carrier tape 1 using vacuum tweezers (not shown), an opening 6 for letting air into the carrier tape is provided to prevent the carrier tape from being attracted to the vacuum tweezers together with the chipped electronic components. A recessed hole 2 for accommodating the chipped electronic component was created by drilling and extruding the metal tape using a semicylindrical press mold.

The flesh of this recessed hole 2 turns into openings 3 and burrs 4 on both sides of the recessed hole 2 when extruded with a press die. The burr 4 acts as a stopper to prevent the chipped electronic components from falling off.

However, since the burr 4 is unstable, it has the disadvantage that it falls off when the automatic insertion machine is operated at high speed, and as a result, the chipped electronic components also fall off.

(4) Purpose of the Invention The present invention eliminates the disadvantage of carrier tape stretching, and also closes the openings on both sides of the recessed hole that accommodates the chipped electronic components, making it possible to eliminate the problem of carrier tape stretching even when an automatic insertion machine is operated at high speed. , which prevents the electronic components from falling off.

(5) Structure of the invention The carrier tape 1 of the invention has a thickness of about 0.1 mm.
A slit 6' is bored in the carrier tape 1 using a metal tape approximately in the center of the planned position of the feed hole 5 and the recessed hole 2 that will accommodate the chipped electronic components, along the direction of travel of the carrier tape 1. do.

Next, extrusion processing is performed from above the slit 6' using a semicylindrical die. At this time, the slit 6' is
The tape is torn to widen its width in the left and right direction, and the meat from this torn part becomes the meat on both sides of the hollow hole 2.
The opening 3 in the conventional example is closed and becomes a closed surface 3'.

The chipped electronic component is accommodated in the recessed hole 2, a thin plastic film (not shown) is pasted on the top surface of the electronic component, and the electronic component is placed in an automatic insertion machine.

When inserting chipped electronic components from an automatic insertion machine into electronic equipment, the slit 6' torn by the extrusion process becomes an inlet for air, and the chipped electronic components are removed from the carrier tape 1 by vacuum tweezers. When pulling out parts, use carrier tape 1
This prevents the chips from being attracted to the vacuum tweezers together with the chipped electronic components.

The closed surface 3 will be more stable if the number of slits 6' is increased from one to several depending on the size of the chipped electronic component, that is, the length, width, depth, etc. of the recessed hole 2. and molded.

In addition to the number of slits 6', the shape of the slits 6' also varies according to the shape of the recessed hole 2, as shown in Figure 4. It is better to modify the slit gradually, such as one with a circle or (c) a slit with a slightly wider width and circular slits at both ends, and is not limited to a simple straight slit.

In short, by appropriately combining the number and shape of the slits according to the size of the recessed hole 2, the closed surfaces 3' at both ends of the recessed hole 2 can be formed more stably.

(6) Effects of the Invention The present invention uses a metal tape instead of paper or plastic as the carrier tape, so the tape does not stretch even when the automatic insertion machine is operated at high speed, making it easier to use chipped electronic components. By providing at least one slit oriented parallel to the traveling direction of the carrier tape in the recessed hole that accommodates the chipped electronic component, both sides of the recessed hole can be mounted with high precision. , a stable closed surface is created, and the electronic components can be prevented from falling off.

Furthermore, although both sides of the recessed hole housing the chipped electronic component are closed, the present invention only requires changing the shape of the opening 6 or increasing the number of slits in the conventional metal tape. Therefore, the number of steps is exactly the same and the effect is very large.

In addition to the above, by using a metal with good conductivity (for example, an aluminum plate), the generation of static electricity can be prevented, and it can also be used to house chip components such as diodes that are susceptible to characteristic damage due to static electricity.

[Brief explanation of drawings]

Figure 1 shows a conventional metal carrier tape. Figures 2 and 3 show the metal carrier tape of the present invention before and after making the recessed holes. FIG. 4 shows the shape of the slit of the present invention. 1... Metal tape, 2... Recessed hole, 3... Opening on both sides of tape, 3'... Closed surface, 4... Burr, 5... Tape feed hole, 6... Opening, 6'...
Slit, 6″...The opening of the slit.

Claims (1)

[Claims] 1 A metal tape having a thickness sufficient to provide a recessed hole capable of accommodating a chipped electronic component is provided with a tape feed hole and a tape traveling direction for letting the flesh of the recessed hole escape to both sides of the recessed hole. and a recessed hole for accommodating a chipped electronic component produced by extrusion on at least one slit oriented parallel to the carrier tape.