JPH09326600A - Inspection for sprocket hole of carrier tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively and continuously realize a series of inspection works for interval of sprocket holes, measurement of length and winding by detecting defective engagement of sprocket holes with a pin with operation of a sensor following the rotation of a detection arm. SOLUTION: A carrier tape 1 is stable transferred while each sprocket hole of the carrier tape 1 is engaged with each pin 17. Meanwhile, a detection arm 15 rotates clockwise via a pivot 18, usually it is energized toward the left side by a spring 19 to fix the other end thereof 20 while it is in contact with a sensor 21. When there is an interval deviation 4 in the sprocket hole 3 of the carrier tape 1, the sprocket hole generates detective engagement against the pin 17, the detection arm 15 rotates clockwise via a pivot 18 against the spring 19. Thereby, the other end thereof 20 is isolated from the sensor 21 to rotate the sensor 21 to detect and transfer irregularities.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier tape in which a large number of recesses for accommodating fine components such as electronic parts and sprocket holes for carrier tape transfer are arranged in the flow direction, and the spacing between the sprocket holes is defective. The present invention relates to a method for inspecting a sprocket hole of a carrier tape, which is capable of efficiently detecting after molding.

[0002]

2. Description of the Related Art As shown in FIG. 1, a carrier tape 1 to which the present invention is applied has a plurality of concave portions 2 for accommodating fine parts and sprocket holes 3 for carrier tape transfer, which are arranged at equal intervals in the flow direction. It has a structure that is lined up in. However, the sprocket hole 3 sometimes causes a gap 4 due to a punch error in manufacturing the carrier tape 1. The gap 4 causes a trouble in winding the carrier tape 1 or when inserting fine parts into the carrier tape.
Since it causes an insertion failure and impairs workability, it is necessary to detect the carrier tape 1 immediately after molding it and remove the part. In the conventional method, the formed carrier tape is wound on the reel 62 after passing through a winding device 61 shown in FIG. 6 as indicated by an arrow after visually inspecting the spacing between the sprocket holes. At that time, the pin roll 64 rotates with the movement of the carrier tape 63, and the counting sensor 65 counts by alternately detecting the sensor detection holes 66, and the length of the carrier tape 63 is measured and quantified. Cutter 67 automatically when the count progresses to
Operated to cut the carrier tape 63 and finish the winding.

[0003]

However, in the case of a visual inspection by a person, it may be overlooked even if the intervals of the sprocket holes are deviated, and there is a limit to the inspection for a long time. There is also a risk of breaking or scratching when the accumulated carrier tape is inspected and wound up because the inspection cannot catch up with the molding speed. After further inspection, it took a considerable amount of time to complete one roll in order to wind it up. Therefore, an object of the present invention is to eliminate a visual inspection by a person, and in particular, for various kinds of carrier tapes having different widths and thicknesses, various sprocket hole spacing inspections, length measurements, and a series of windings. It is intended to provide an inspection method capable of continuously and efficiently performing work.

[0004]

A method of inspecting a sprocket hole of a carrier tape according to the present invention is a carrier tape in which a plurality of recesses for accommodating fine parts and sprocket holes for carrier tape transfer are connected in a flow direction. A pin roll having a large number of pins provided on the circumferential side surface at intervals corresponding to the sprocket holes, and a guide roll of a detection arm rotatably provided via a support shaft. The fitting failure of the sprocket hole to the pin is detected by the operation of the sensor according to the rotation of the detection arm while fitting the sprocket hole into the sprocket hole. In this inspection method, it is possible to avoid overlooking gaps in the spacing of the sprocket holes, and it is possible to reduce the time required for the inspection, especially for various types of carrier tapes with different widths and thicknesses, inspection of the spacing between the sprocket holes, It is possible to continuously and efficiently perform a series of work of measuring the length and winding.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The details of the present invention will be described below with reference to FIGS. 2 is a front explanatory view showing an example of a sprocket hole inspection device of a carrier tape according to the present invention, FIG. 3 is an enlarged front view of a main part of the inspection device shown in FIG. 2, and FIG. FIG. 5 is a front view of the operation panel shown in FIG. In the inspection apparatus shown in FIG. 2, the molded carrier tape 1 is provided on one end of the pin roll 14 and the detection arm 15 by the take-up roll 26 after passing through the take-up speed adjusting sensor 11, the width regulating guide 12 and the tension roll 13. It is guided between the guide roll 16 and the guide roll 16. As shown enlarged in FIGS. 3 and 4, a large number of pins 17 are provided on one side of the peripheral side surface of the pin roll 14 in correspondence with the intervals of the sprocket holes 3 (see FIG. 1). By passing the sprocket holes 3 of the carrier tape 1 through 17 while fitting them, the carrier tape 1 is stably transported.
On the other hand, the detection arm 15 is rotatable clockwise through a support shaft 18, but is normally urged to the left (in FIG. 3) by a spring 19 so that the other end 20 serves as a sensor 21. Fixed in contact. If the sprocket hole 3 of the carrier tape 1 has a gap 4 as shown in FIG. 1, the sprocket hole 3 will be improperly fitted to the pin 17, and as a result, the guide roll 16 (see FIG. ) Extruded to the left,
The detection arm 15 rotates clockwise via the support shaft 18 against the spring 19, and the other end 20 moves away from the sensor 21 to activate the sensor 21 and detect / transmit an abnormality.

Next, a description will be given of a case where the width of the carrier tape is changed. As shown in FIG. 4, on the peripheral side surface of the pin roll 14, at intervals from the left end according to the width of the carrier tape 1, for example, a groove 22a for a width of 8 mm and a groove 22 for a width of 12 mm.
b, a groove 22c for a 16 mm width, a groove 22d for a 24 mm width, and the like. The groove 22 is provided, and the moving plate 24 is passed through the support shaft 23 of the guide roll 16 so that the moving plate 24 By inserting the peripheral edge into the groove 22 at a position corresponding to the width of the carrier tape 1 and holding it from both sides of the carrier tape 1 by the guide roll 16 and the moving plate 24, any kind of carrier tape 1 can be supported. become. Also, when the thickness of the carrier tape 1 changes,
Input data to the digital panel meter 31 as shown in FIG. 5 so that the change of each thickness, for example, 0.2 mm, 0.25 mm, 0.3 mm, 0.4 mm, can be handled.
Set the select switch 32 to the thickness to be changed, pass the carrier tape 1 through the pin roll 14, and press the zero point reset button 33 (zero point adjustment of the sensor 21). This method can be applied to various thicknesses.

After the inspection of the spacing between the sprocket holes is completed in this manner, the carrier tape 1 is wound around the reel 28 via the carrier tape take-up angle regulating guide roll 25, the take-up roll 26 and the cutter 27. At this time, if the counting sensor 65 and the sensor detection hole 66 similar to those shown in FIG. 6 are provided between the take-up roll 26 and the cutter 27, the counting sensor 65 rotates for detecting the sensor. Counting is performed by alternately detecting the holes 66, the winding length of the carrier tape 1 is measured, and when the count reaches the fixed amount, the cutter 27 automatically operates to cut the carrier tape 1 and wind it. finish. In this way, a series of operations including inspection of the sprocket hole spacing, length measurement, and winding are performed.

[0008]

EXAMPLES Specific embodiments of the present invention will be described below with reference to examples. A carrier tape formed by using a sheet having a thickness of 0.4 mm and a width of 24 mm and having a sprocket hole pitch of 4 mm was wound up through a sprocket hole inspection device as shown in FIG. The carrier tape with the pitch of the sprocket holes intentionally shifted by about 0.5 mm was taken up there, and the sprocket hole inspection device detected an abnormal portion.

[0009]

According to the present invention, erroneous sprocket hole inspections are eliminated and the inspection line is not stopped, so continuous operation is possible. In addition, it is possible to cope with the case where the type of product is changed extremely easily.

[Brief description of drawings]

FIG. 1 is a partially enlarged plan view of a carrier tape to which the present invention is applied.

FIG. 2 is a front explanatory view showing an example of a sprocket hole inspection device of a carrier tape according to the present invention.

FIG. 3 is an enlarged front view of a main part of the inspection device shown in FIG.

FIG. 4 is a partial cross-sectional bottom view taken along the line AA of FIG.

5 is a front view of an operation panel of the inspection device shown in FIG.

FIG. 6 is a front view showing an example of a conventional carrier tape winding device.

[Explanation of symbols]

1, 63 ... Carrier tape, 2 ... Recessed portion, 3 ... Sprocket hole, 4 ... Misalignment, 11 ... Sensor for adjusting take-up speed, 12 ... Width regulation guide, 13 ... Tension roll, 1
4, 64 ... Pin roll, 15 ... Detection arm, 16 ... Guide roll, 17 ... Pin, 18, 23 ... Spindle, 19 ... Spring, 20 ... Other end, 21
... sensor, 22, 22a, 22b, 22c, 22d ... groove, 24 ... moving plate, 25 ... carrier tape take-up angle regulation guide roll, 26 ... take-up roll, 27, 67 ... cutter,
28, 62 ... reel, 31 ... digital panel meter, 32 ... select switch, 33 ... zero point reset button, 61 ... winding device, 65 ... counting sensor, 66 ... sensor detecting hole.

Claims (1)

[Claims] 1. A carrier tape comprising a plurality of recesses for accommodating fine parts and a plurality of sprocket holes for transporting a carrier tape, which are continuously arranged in the flow direction, and a plurality of pins are provided on a peripheral side surface at intervals corresponding to the sprocket holes. Between the pin roll and the guide roll of the detection arm that is rotatably provided via a support shaft while fitting the pins into the sprocket holes, and inserting the sprocket holes into the pins. A method for inspecting a sprocket hole of a carrier tape, which detects a fitting failure by operating a sensor associated with rotation of a detection arm.