JP2000264305A - Carrier tape inspection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously and easily carry out the 100% inspection whether or not electronic parts can be stored in parts storage recessed portions by inserting an inspection body of the same size as that of the stored parts in the storage recessed portions, and inspecting presence/absence of defective ones by the quantity of the movement of the inspection body. SOLUTION: A formed carrier tape 1 is intermittently fed forward by the specified quantity by a receiving device 2, and inspection bodies 6, 6 with substantially same size as that of a large number of continuously stored parts on an inspection plate 5 are inserted in recessed portions 7, 7 of the carrier tape 1 in an interlocking manner with the vertical movement of a press punch die 3 to punch sprocket holes. The pressing force in inserting the inspection body 6 is adjusted to the value not to buckled any defective dimensional portion in the recessed portion 7 by a compressive coil spring 10. Defects of the recessed portion of the formed carrier tape 1 can be easily and correctly inspected by measuring the change of the quantity of the movement of the inspection body 6 by a distance sensor 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection of a concave part for storing a component of a carrier tape, which is effective when a large number of various electronic components are stored, transported, and operated smoothly by a surface mounter. About the method.

[0002]

2. Description of the Related Art Conventionally, a method of inspecting a concave portion for storing a component (hereinafter referred to as a concave portion) of a carrier tape is to periodically cut a part of the carrier tape from a continuously manufactured line and use a microscope or the like. The vertical and horizontal dimensions were measured with a depth gauge or the like, and the height dimension was measured to check whether each dimension was within the standard.

[0003]

However, according to the above-mentioned conventional inspection method, a defect in which the dimensions of the concave portion of the carrier tape in the production line are continuously out of the standard can be found, but a dimensional defective portion which occurs very rarely. (Discontinuous or accidental defective formation of the concave portion) could not be found. SUMMARY OF THE INVENTION It is an object of the present invention to provide a carrier tape inspection method that can continuously and easily inspect whether or not electronic components can be stored in all recesses of a carrier tape in a production line.

[0004]

In order to solve the above-mentioned conventional problems, it is necessary to introduce an in-line inspection apparatus on a production line and inspect all the concave portions of a continuously formed carrier tape. In the inspection method of the carrier tape of the present invention, by inserting a test body having substantially the same size as a component actually stored in the concave portion of the carrier tape with a strength that does not buckle the dimensional defect generated in the concave portion, Inspection can be performed on all of the formed concave portions.

[0005] That is, in the recess of the carrier tape,
When a defective part occurs and the component cannot be stored at the bottom of the concave portion, the test object having substantially the same size as the component to be stored is not inserted to the bottom of the concave portion. Utilizing the fact that the test object hits the protrusion and slightly lifts when the part is inserted with such strength that the part does not buckle, the amount of movement of the test object caused by the lift is measured by a sensor, and the concave portion of the carrier tape is continuously measured. To inspect.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial perspective view of a carrier tape, and FIG. 2 is a schematic diagram of an apparatus using the carrier tape inspection method according to the present invention. Also, FIG.
FIG. 3 is a schematic view of the apparatus of FIG. 2 when a defective molding portion is detected.

As shown in FIG. 2, in a general carrier tape manufacturing process using a vacuum forming method or a pressure forming method, a formed carrier tape 1 is intermittently intermittently removed by a predetermined amount by a take-off device (feeder) 2. It is sent forward (in the direction of the arrow), and the sprocket hole 4 shown in FIG. At this time, in conjunction with the vertical movement of the press punch die 3, a large number of test bodies 6, 6 provided continuously on the test plate 5 are inserted into the concave portions 7, 7 of the carrier tape. The test pieces 6 and 6 are the same as the parts stored in the recesses 7 and 7 of the carrier tape 1 or ± 0.0
It is formed in a convex shape having an outer shape of approximately the same size of 1 mm. The convex inspection body may be hollow or solid, and the inspection plate 5 may be installed either before or after the press punch die 3.

The inspection plate 5 moves up and down smoothly by the slide bush 8. During this movement, the pressing force when the test object 5 is inserted into the concave portion 7 is maintained at a strength that does not buckle the protrusions 9 and 9 ′ as shown in FIG. Adjust so that In order to maintain such a pressing force, it is preferable to use an elastic body such as a compression coil spring or a piston / cylinder mechanism. FIG. 2 shows an example in which the compression coil spring 10 is used. The compression coil springs 10 are mounted on the support shafts 11 of the test pieces 6 and 6, respectively, and the pressing force on the test pieces 6 and 6 is adjusted.

When the dimensions of the recesses 7, 7 of the carrier tape are such that there is no problem in storing the parts, the inspection bodies 6, 6 are smoothly inserted to the bottom of the recess 7, and the inspection plate 5 is a press punch die. In the state where 3 is descending, it always shows a constant height. Due to this, the concave portion of the carrier tape
It can be seen that the vertical, horizontal, and depth dimensions are the standard values. On the other hand, if there is a protrusion 9 as shown in FIG. 1 formed at the bottom in the recess 7 or a protrusion 9 ′ formed on the inner surface in the recess 7, these are dimensional defects. Since the distal end surfaces of the test pieces 6 and 6 hit the protruding portions 9 and 9 'and are not inserted to the bottom of the concave portion 7, the test plate 5 is higher than normal (FIG. 3). The change in the amount of movement of the test object 6 is detected by the distance sensor 12.
, The defect of the concave portion 7 of the formed carrier tape can be easily and accurately inspected.

The inspection plate 5 is formed to have a size capable of covering a carrier tape of a fixed length, which is intermittently fed by the feeder 2.
Above, are provided at positions corresponding to the concave portions 7, 7 formed on the carrier tape having the predetermined length, respectively. With such a configuration, the inspection of all the concave portions 7, 7 of the formed carrier tape can be performed continuously and easily in-line.

[0011]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples. The inspection method of the present invention was tried using the apparatus shown in FIGS. 60m width
m, 0.25 mm thick transparent polystyrene sheet, 1.45 mm × 2.2 mm long and 1.4 mm deep
And a carrier tape 1 having sprocket holes with a pitch of 4 mm were prototyped in six rows, and the concave portion of the carrier tape was inspected by the inspection method of the present invention.

According to the inspection method of the present invention, the sprocket holes 4 of the carrier tape 1 are punched out 80 mm intermittently by the feeder 2 and simultaneously perform 20 rows × 6 columns. A solid convex test piece 6 of the same size (length and width 1.2 mm x 2 mm, height 1.4 mm)
Provided (120 rows × 6 columns).

Example 1 Inspections 6, 6 on an inspection plate 5 were inserted into recesses 7, 7 of a carrier tape in conjunction with the vertical movement of a press punch mold 3. At this time, the support shaft 1
In the compression coil spring 10 provided in No. 1, the pressure at the time of insertion of the test body 6 was adjusted to a strength that does not buckle the protrusion having the dimensional defect in the recess 7. When the size of the concave portion 7 is a size that does not cause a problem in storing the components, the test body 6 is completely inserted into the concave portions 7 of the carrier tape, and the height of the test plate 5 when the test body 6 is stored is substantially constant. Value (± 0.01 mm).

On the other hand, out of the 120 recesses 7 on the carrier tape, even one of the recesses 7 has a dimensional defect, and any one of the vertical dimension, the horizontal dimension, or the depth dimension of the concave section 7 is determined by the insertion test body. When it is smaller than the dimension by 0.05 mm or more, the height of the inspection plate 5 is +0.05, ± 0.01 mm as compared with the case where the size of the concave portion has no problem in storing the parts, and the height of the concave portion 7, Dimensionally inferior portions generated in No. 7 could be easily found.

[0015] Further, 12
Of the zero recesses 7, 7, an inspection was performed by the same method as described above using a carrier tape having a projection having an inner surface with a dimensional defect, but the defective portion could be easily found. Was.

[0016]

According to the carrier tape inspection method of the present invention, whether or not electronic components can be accommodated in all the component accommodating recesses of a manufactured carrier tape is continuously and easily inspected in a production line. can do.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a carrier tape applied to an inspection method of the present invention.

FIG. 2 is a schematic view of an apparatus using the carrier tape inspection method according to the present invention.

FIG. 3 is a schematic diagram of the apparatus of FIG. 2 when a defective dimension portion of a carrier tape is detected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carrier tape 2 Take-up device (feeder) 3 Press punch die 4 Sprocket hole 5 Inspection plate 6, 6 Inspection body 7, 7 Concave part for storing carrier tape parts 8 Slide bush 9 Projection 11 Support shaft 10 Compression coil spring 12 Distance sensor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E067 AA11 AB41 BA26A BB14A FA09 GD10 3E096 AA06 BA08 CA13 CC01 DA04 EA02X EA02Y FA30 FA40 GA03

Claims (1)

[Claims] When inspecting a concave part for accommodating an electronic component of a carrier tape, an inspecting body having substantially the same size as a part to be accommodated is inserted into the concave part with a strength that does not buckle a defective dimension part in the concave part. And inspecting the presence or absence of a defective portion according to the amount of movement of the inspection object.