JPS6238212B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Application Field The present invention provides a method for manufacturing a plastic carrier tape that is convenient for automatically inserting chipped electronic components into electronic equipment. Regarding.

(2) Prior art Recently, electronic devices have become smaller and more sophisticated, and the electronic components used are becoming more and more chipped.It is difficult to attach such small electronic components to electronic devices by hand. It required technology.

However, with the development of automatic insertion machines, chipped electronic components can now be attached to plastic carrier tape and attached to electronic equipment accurately and in a short time.

The explanation will be given below with reference to FIGS. 1 and 2.

A plastic carrier tape 1 is pressed with a mold (not shown) to form a recessed hole 2 for accommodating a chipped electronic component (not shown) and a tape feed hole 3. At this time, an opening 4 is formed on the side of the recessed hole that accommodates the chipped electronic components.
However, there are burrs and chipped electronic components will not fall off.

The chipped electronic component is inserted into the recessed hole 2 of a plastic carrier tape 1 supplied from a reel (not shown), and a cover tape (not shown) is pasted thereon to remove the component. The chipped electronic components are taken out from the plastic carrier tape and attached to the electronic device. At this time, if the distance P (pitch) from the center of one hollow hole 2 to the center of the next hollow hole 2 is completely constant and there is always no error, no problem will occur. However, even if the mounting condition when setting the press mold or the precision of the mold deviates by about 1/100 mm, if this deviation accumulates, it will appear as bending or pitch deviation of the plastic carrier tape. There was a problem in that this was a major cause of hindering the smooth operation of the automatic insertion machine.

(3) Problems to be Solved by the Invention The present invention solves the above-mentioned problems, and makes it possible to easily set up a press mold, and to do so over a long period of time by just making adjustments at the beginning. It is an object of the present invention to provide a method for manufacturing a plastic carrier tape that does not require re-adjustment.

B. Structure of the Invention (1) Means for Solving the Problems The present invention involves molding a recessed hole for accommodating chipped electronic components in a plastic carrier tape or a feed hole in a plastic carrier tape, and at the same time The purpose is to correct slight misalignment of the press die by deforming the manufactured carrier tape in the direction of bending or stretching in the opposite direction to the direction of active bending. That is, the method for manufacturing a plastic carrier tape of the present invention includes at least a recessed hole for accommodating a chipped electronic component on a plastic carrier tape and a pressing deformation portion for correction provided along the recessed hole. A first process of continuous molding simultaneously with one mold as a set, a second process of detecting bends or pitch deviations caused by molding distortion caused by the above process, and a second process of detecting the bends or pitch deviations. In order to correct the problem, the third step is to control the stroke and rotation angle of the dent forming rod to adjust the deformation amount and deformation position of the pressing deformation part.

(2) Effects Therefore, according to the configuration of the present invention, the plastic carrier tape is positively deformed to eliminate bending or pitch deviation. This has the advantage that it can be easily carried out using a striking rod provided in a press die whose stroke and rotation angle can be controlled.

Furthermore, the present invention has the effect that by repeating the first step and the second step, bending or pitch deviation of the plastic carrier tape can be completely removed.

(3) Example With reference to FIG. 3, a method for manufacturing a plastic carrier tape of the present invention will be explained. First, a part is made in a press mold to form a recessed hole 2 for accommodating a chipped electronic component and an indentation (press deformation part) 5, and the indentation 5 part can be controlled in the vertical and rotational directions. A dent forming rod (not shown) is used. The lower part of the dent forming rod has an asymmetrical shape to counteract the bending or pitch deviation of the plastic carrier tape. Therefore, when the stroke of the dent forming rod is changed, the depth of the dent 5 changes, and when the dent forming rod is rotated, the denting distortion becomes uneven. Therefore, by changing the stroke and rotation angle of the dent forming rod, the bending or pitch deviation of the plastic carrier tape is corrected.

The mechanical structure of the mold and the impression forming rod is omitted because it is not directly related to the present invention, but any structure may be used as long as it can perform vertical stroke and rotation.

Next, the method of the present invention will be explained step by step.

In the first step, a mold or rod for forming the recessed hole 2, feed hole 3, and punch 5 for accommodating the chipped electronic components is set in a press, and a plastic carrier supplied from a reel is placed in the press. The tape is continuously molded.

Initially, it is not necessary to form the dents using a dent forming rod, but it is sufficient to move the plastic carrier tape once and check for bends or pitch deviations.

Next, as a second step, it is detected to what extent the plastic carrier tape molded in the first step is bent or pitched. There are several electrical or mechanical methods for this detection, but the simplest method is for the press operator to detect how many parts of the plastic carrier tape are bent to the right or left. or how many pitch deviations there are out of 1.

Then, in the third step, based on the results of the second step, the length of the stroke of the dent-forming rod, that is, the depth of the dents 5, or the rotation angle of the dent-forming rod is changed. Eliminate bending or pitch deviation.

After adjusting in this way, the plastic carrier tape will hardly bend or become misaligned; however, by repeating the second and third steps, the bending or misalignment will converge. . The number of repetitions is small when manufacturing the same type of plastic carrier tape, but increases when a new type of plastic carrier tape or a temperature difference occurs.

In addition, in the present invention, at least one reinforcing rib 6 is provided in the recessed hole 2 for accommodating the pitched electronic component in the moving direction of the plastic carrier tape. By doing this, the hollow hole 2
Not only the reinforcement itself, but also the bending or pitch deviation during continuous molding of the recessed hole 2 is reduced, and the number of adjustments is also reduced compared to the case without reinforcement.

Moreover, the shape of the lower surface of the dent forming rod of the present invention is
In addition to the display shown in FIG. 3, it is also possible to use a company mark, electronic component name, type of tape, date of manufacture, etc.

Furthermore, the type of plastic carrier tape and the pitched electronic components, or the shape of the recessed hole that accommodates the pitched electronic components,
It goes without saying that the shape is not limited to those described in the examples and can take any shape.

C. Effects The present invention can easily eliminate bending or pitch deviation of a plastic carrier tape due to dimensional errors or setting errors in the die by simply providing a controllable driving rod in the die.

The present invention also eliminates bending or misalignment of the plastic carrier tape with only simple adjustments prior to fabricating the recessed holes to accommodate the pitched electronic components in the plastic carrier tape.

[Brief explanation of the drawing]

FIG. 1 is a top view of a plastic carrier tape, and FIG. 2 is a perspective view showing the recessed holes for receiving pitched electronic components in the plastic carrier tape and the perforations in said tape. FIG. 3 is a perspective view of a plastic carrier tape having perforations and reinforcing ribs suitable for carrying out the method of the present invention. 1...Plastic carrier tape, 2...
Recessed hole, 3...Table feed hole, 4...Opening, 5
... Hit it, 6... Reinforced ribs.

Claims (1)

[Scope of Claims] 1. One mold including at least one set of a recessed hole for accommodating an electronic component chipped on a plastic carrier tape and a press deformation part for correction provided along the recessed hole. A first step of continuous molding at the same time, a second step of detecting bends or pitch deviations caused by molding distortion caused by the above steps, and a driving process to correct the bends or pitch deviations. A method for manufacturing a plastic carrier tape, comprising a third step of controlling the stroke and rotation angle of the forming rod to adjust the deformation amount and deformation position of the pressing deformation part. 2. The method for manufacturing a plastic carrier tape according to claim 1, wherein the recessed hole for accommodating the chipped electronic component in the first step has reinforcing ribs. 3. Claim 1, characterized in that the first step comprises at least one set of a recessed hole for accommodating a chipped electronic component, a tape feed hole, and a pressing deformation section provided between these. A method for producing a plastic carrier tape according to item 1 or 2. 4. The method for manufacturing a plastic carrier tape according to claim 1, characterized in that the second step and the third step are repeated alternately.