JPH0745734A - Housing method for micro-component in carrier tape - Google Patents

Abstract

PURPOSE:To provide a housing method for micro-components in a carrier tape, wherein micro-components can be smoothly and surely housed into a recessed container, and the micro-components housed in the recessed container are hardly damaged when they come into contact with the sidewall or the base of the recessed container due to their movements attendant on the winding of a carrier tape or in transit. CONSTITUTION:A large number of recessed containers 2 where micro- components are housed are continuously provided to a carrier tape 1 along a feed direction, and protrudent edges 6 are provided to the recessed container 2 by pushing up and bending free pieces made by slitting the base of the recessed container 2. A jig is inserted into a slit 5 provided to the base of the recessed container 2 to bend the protrudent edges 6 by pushing, and then a micro-component is housed in the recessed container 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of accommodating fine parts such as various electronic parts and precision equipment parts, which is useful for accommodating and storing a large number of minute parts, particularly carrier tape. The present invention relates to a method for surely and quickly storing a fine component at a predetermined position.

[0002]

2. Description of the Related Art A conventional carrier tape a is, as shown in FIG. 4, a concave container c for individually accommodating parts b by press molding, vacuum molding or the like from one flat thermoplastic resin sheet. Was formed into a shape in which a large number are continuously provided in the flow direction via the flange portion d. In this use, after storing the component b in each concave container c, the opening of each concave container c is covered with the flexible top tape e having an adhesive layer and the surface of the flange portion d is sealed. While reeling up on reel f,
It was used for transportation and storage.

[0003]

However, the concave container c for individually storing these parts b has a structure for fixing the parts b in place, as shown in FIG. 5 (a). Since the storage position of the component is not determined due to the difference between the size of the component and the size of the concave container, the end of the lead frame g comes into contact with the side surface of the concave container c during winding for transportation / storage. It could be deformed. For this reason, as shown in FIG. 5B, a carrier tape having a dish-shaped terrace i on the bottom of a concave container h has been proposed. In both the method of simultaneously molding the concave container and the stepped portion and the method of simultaneously molding the concave container and the stepped portion by press molding according to Japanese Patent Laid-Open No. 3-14427, a void is formed inside the side wall j of the terrace i. Therefore, the width W of the side wall j becomes about 0.5 mm, which causes a problem that the side wall j deforms the lead frame g, or the electronic component b cannot be stored in the concave container h.

Therefore, the present applicants previously formed a trapezoidal portion n on the bottom surface m of the concave container k by press molding or vacuum molding, as shown in FIG. A carrier tape having a plurality of projecting edges q narrower than the side wall j, which is formed by bending a free piece of the slit p and inserting the slit p, is proposed. This carrier tape securely holds the electronic component b and leads the frame g during transportation.
Although it has an excellent effect of preventing the deformation, the protruding edge q that has been pushed up tends to return to the original state and collapse when stored for a long time. Therefore, when the electronic component b is inserted, it is inserted. Sometimes it caused a defect. Therefore, the object of the present invention is to be able to smoothly and reliably store the fine parts in the concave container, and moreover, the parts housed in the concave container can be moved by the winding of the carrier tape and the movement accompanying the vibration during transportation. The present invention provides a method for accommodating fine parts in a carrier tape, which is not likely to be damaged by coming into contact with the side wall or bottom plate of a concave container.

[0005]

A method for accommodating fine parts in a carrier tape according to the present invention is obtained by arranging a large number of concave containers for accommodating fine parts in the flow direction and slitting the bottom surface of the concave containers. In a carrier tape having a plurality of projecting edges formed by bending a loose piece upward, a jig is inserted again into the slit on the bottom surface, the projecting edges are pushed and bent, and then the fine parts are stored. It is what

Hereinafter, a method for accommodating a fine component in the carrier tape of the present invention will be described with reference to the illustrated drawings. FIG. 1 is an enlarged view of a part of a carrier tape to which the method of the present invention is applied. This carrier tape 1 is advantageous for accommodating fine components, especially electronic components having lead portions in four directions, and a concave container 2 for individually accommodating these electronic components is provided with a flange portion 3 in a flow direction. It has a shape that is connected in series. At the bottom of the concave container 2 there is a trapezoidal portion 4 in the center, and along the periphery of the trapezoidal portion 4,
Four slits 5 are opened by bending the loose piece after being slit in a U shape by a jig pushed up from below, and a projecting edge 6 which is circumscribed to the slit.
In addition, 7 is a feed hole.

Next, an example of a method of storing electronic components using the carrier tape 1 will be described with reference to FIGS. 2 and 3. Carrier tape 1 rewound from reel 11
Is first sent to the ridge pushing and bending step 12. Edge press bending process 12
As shown in FIG. 3, the concave container 2 of the carrier tape 1 is gripped and fixed by the upper and lower molds 13, 13 and the four punches 14 corresponding to the positions of the four slits 5 of the concave container 2, respectively. The jig 15 provided with is pushed up to insert the punches 14 into the slits 5, and the projecting edges 6 circumscribing the punches are pushed and bent 90 ° surely. Reference numeral 16 is an electronic component inserter, and each of the electronic components 17 adsorbed at the tip is a concave container 2
Supplied within. Next, after the opening of each concave container 2 is covered with a flexible top tape 18 having an adhesive layer,
The heat sealer 19 seals the surface of the flange portion 3 and winds the reel 20 into a roll. The gripping operation by the molds 13 and 13 and the inserting operation by the jig 15 and the sealing operation by the heat sealer 19 in the protruding edge pressing step 12 are performed intermittently in cooperation with each other.

[0008]

According to the method for accommodating fine parts in the carrier tape of the present invention, since the projecting edges of the respective concave containers of the carrier tape are accurately formed, the fine parts, for example, electronic parts having lead portions in four directions. Can be stored smoothly and reliably, and there is no fear that the lead frame will be deformed due to the projecting edge.

[0009]

EXAMPLES Specific embodiments of the present invention will be described below with reference to examples. A method in which a carrier tape made of polyvinyl chloride as shown in FIG. 1 which is kneaded with carbon and stored for 3 months is taken out, and a QFP type IC is directly inserted into the carrier tape, Then, the jig was inserted again into the slit on the bottom surface by pressing, and the projecting edge was pressed and bent, and then stored. The former had a charging defect of 5%,
In the latter, there were no charging defects.

[0010]

According to the present invention, fine parts can be smoothly and reliably stored in the concave container, and the parts stored in the concave container can be vibrated during winding of the carrier tape or during transportation. Thus, the side wall and the bottom plate of the concave container are not in contact with and damaged.

[Brief description of drawings]

1A and 1B relate to an embodiment of a carrier tape to which the method of the present invention is applied, FIG. 1A is a plan view, and FIG. 1B is a longitudinal sectional view taken along the line AA of FIG.

FIG. 2 is an explanatory view showing one embodiment of the method of the present invention.

FIG. 3 is a vertical cross-sectional explanatory view showing an enlarged main part of the embodiment shown in FIG.

FIG. 4 is a perspective view showing a wound state of a conventional carrier tape.

FIG. 5 is a vertical cross-sectional explanatory view showing an enlarged main part of a conventional carrier tape, and FIGS. 5A to 5C show different modes thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Carrier tape, 2 ... Recessed container, 3 ... Flange part, 4 ... Trapezoid part, 5 ... Slit, 6 ... Projection edge, 7 ... Feed hole, 11, 20 ... Reel, 12 ... Projection edge pressing / bending process, 13 … Mold, 14… punch,
15 ... Jig, 16 ... Electronic component inserter, 17
… Electronic components, 18… Top tape,
19 ... Heat sealer.

Claims (1)

[Claims] 1. A carrier having a plurality of concave containers for accommodating microparts continuously arranged in the flow direction, the carrier having a plurality of projecting edges formed by pushing upward a free piece obtained by slitting the bottom surface of the concave container. A method for accommodating a fine component in a carrier tape, wherein the jig is again inserted into the slit on the bottom surface of the tape to press and bend the projecting edge, and then the fine component is accommodated.