JP2022001519A - Winding method of carrier tape - Google Patents

Abstract

To provide a winding method of a carrier tape capable of suppressing deformation or waviness of the carrier tape wound on a winding reel.SOLUTION: A winding method of a carrier tape 10 for winding the carrier tape 10 having a feed hole and a plurality of storage recessed parts for storing a component in a longitudinal direction on a winding reel 20, in which the winding reel 20 forms a winding space with a cylindrical core part 21 and a side plate 22 provided on both sides of the core part 21, a guide 40 (41) that guides the fed carrier tape 10 to the winding reel 20 is inserted into the winding space, and a winding tension is made larger than the load of the guide 40, or the load of the guide 40 is made smaller than the winding tension, and the carrier tape 10 is wound on the winding reel 20.SELECTED DRAWING: Figure 3B

Description

The present invention relates to a method of winding a carrier tape for storing parts in a storage recess.

Conventionally, electronic components such as bare chips (bare dies) and IC chips are stored in the storage recesses of carrier tapes and used for transportation between factories and supply to mounting devices. According to the JIS standard, this carrier tape is specified so that a feed hole is provided in the flange portion on both sides for a carrier tape having a tape width of 32 mm or more, and in the flange portion on one side for a carrier tape having a tape width of 24 mm or less. ..

Normally, the carrier tape is wound in multiple layers on a take-up reel having the same width as the tape width, but in order to take up a long length, the carrier tape is spirally wound on a wide take-up reel, for example, as seen in Patent Document 1. Traverse winding is performed, and it may be wound in multiple layers.

In the winding device 130 as shown in FIGS. 4A and 4B that performs such traverse winding, a guide (for example, a guide roller 50) that stabilizes the path line of the carrier tape 10 is fixed immediately before the winding reel 20. The take-up reel 20 is wound while traversing in the width direction of the carrier tape 10.

Japanese Unexamined Patent Publication No. 2001-247158

However, in the conventional carrier tape winding method, since the section from the immediately preceding guide to the contact with the winding reel is separated, the carrier tape may pulsate (vibrate) during this period.

Due to this pulsation, the carrier tapes are not aligned at equal intervals in the take-up reel, and a gap is generated in the width direction. Therefore, the upper layer carrier tape is wound at an angle or is wound in a stepped state, and at that point, the carrier tape is wound or warped, and the lower layer carrier tape is deformed, which is a quality abnormality. (See FIGS. 5A and 5B).

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for winding a carrier tape capable of suppressing deformation or waviness of the carrier tape wound on a winding reel.

(1) One aspect of the present invention is a method for winding a carrier tape, in which a plurality of feed holes and storage recesses capable of accommodating parts are formed in the longitudinal direction, and the carrier tape is wound on a take-up reel. The take-up reel is formed by a cylindrical core portion and side plates provided on both sides of the core portion to form a take-up space, and the carrier tape supplied is taken up by the take-up reel. The guide to be guided to the reel is inserted into the take-up space, and the take-up tension is made larger than the load of the guide, or the load of the guide is made smaller than the take-up tension, and the carrier tape is made to be the carrier tape. It is wound on a take-up reel.
(2) In the embodiment of (1) above, the guide position by the guide may be changed according to the winding diameter of the carrier tape being wound, and the carrier tape may be wound on the winding reel. ..
(3) In the embodiment of (1) or (2) above, the carrier tape may be spirally wound on the take-up reel.

According to the present invention, it is possible to provide a method for winding a carrier tape capable of suppressing deformation or waviness of the carrier tape wound on the winding reel.

It is a perspective view of a carrier tape. It is a schematic diagram which shows the take-up reel which wound the carrier tape. It is a top view which shows the winding apparatus and method of this embodiment. It is a front view which shows the winding apparatus and method of this embodiment. It is a top view which shows the winding device and the method which provided the conventional guide roller. It is a front view which shows the winding device and the method which provided the conventional guide roller. It is a schematic diagram which shows the state which a part of the wound carrier tape is deformed. It is a schematic diagram which shows the state which a part of the wound carrier tape is stepped down.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. In the embodiments of the present specification, the same members are designated by the same reference numerals throughout.

FIG. 1 is a perspective view of a carrier tape 10 to which the winding method of the embodiment according to the present invention is applied.
As shown in FIG. 1, in the carrier tape 10, a storage recess 11 capable of individually storing a component P such as an electronic component and a feed hole 12 into which a sprocket of a mounting device is inserted are spaced apart from each other in the longitudinal direction. It is formed in multiples.

Further, the carrier tape 10 has a wide feed hole side flange portion 13 extending from the upper edge portion of the storage recess 11 to one side, and a narrow width extending from the upper edge portion of the storage recess 11 to the other side. It has a flange portion 14, and these have a tape-like structure in which a large number of flange portions 14 are continuously provided in the longitudinal direction (feeding direction) via the connecting portion.

The carrier tape 10 is formed by processing a tape-shaped base material having a thickness of 0.2 mm to 0.6 mm. The tape-shaped base material is, for example, a synthetic resin such as amorphous polyethylene terephthalate, polyvinyl chloride, polystyrene, polycarbonate, or polypropylene, a resin obtained by kneading carbon into these resins to give conductivity, and a conductive coating on the surface. It is made of a material such as polycarbonate.

Although the storage recess 11 has a substantially rectangular shape, it may be formed according to the shape of the component P to be stored, and a pedestal may be formed on the bottom surface. On the other hand, the feed hole 12 has a circular shape in a plan view, but the shape and spacing of the feed holes 12 are formed according to a feed mechanism such as a sprocket. The feed holes 12 may be formed on both sides of the storage recess 11 along two sides in the longitudinal direction.

In such a carrier tape 10, a storage recess 11 is formed in a tape-shaped base material with a drum-shaped mold, a feed hole 12 is formed, and a take-up reel 20 is mounted. FIGS. 3A and 3B. It is sent to the take-up device 30 as shown in.

FIG. 2 is a schematic view showing a take-up reel 20 on which the carrier tape 10 is wound.
The take-up reel 20 forms a take-up space in which the carrier tape 10 is taken up and stored by a cylindrical core portion 21 and disk-shaped side plates 22 provided on both sides of the core portion 21.

FIG. 3A is a top view showing the winding device 30 and the method of the present embodiment. FIG. 3B is a front view showing the winding device 30 and the method of the present embodiment.
The winding device 30 includes a driving means (not shown), a traversing means, and the like, and a guide 40 described later. Further, a support roller (not shown) is provided below the carrier tape 10 upstream of the guide 40 of the winding device 30.

The drive means includes a drive shaft inserted into the core portion 21 of the take-up reel 20 and a take-up motor that rotates the drive shaft together with the take-up reel 20.

The torque of the take-up motor is controlled by a tension controller, whereby the take-up tension of the carrier tape 10 can be adjusted. The take-up motor is controlled to take up a constant take-up tension (reference tension) regardless of the take-up diameter of the carrier tape 10 taken up on the take-up reel 20, but the take-up tension is set to the take-up diameter. It can also be adjusted variably according to the situation.

On the other hand, the traverse means can move at least the drive shaft of the drive means in the width direction of the carrier tape 10. This traverse means traverses the drive shaft with respect to the guide 40 from the side plate 22 on one side of the take-up reel 20 toward the side plate 22 on the other side by a predetermined distance while the drive shaft makes one rotation. The amount of traverse movement per rotation of the drive shaft is generally referred to as a lead pitch.

With the winding device 30 having such a configuration, it is possible to perform traverse winding in which the carrier tape 10 is spirally wound on the winding reel 20. In the winding method using the winding device 30 of the present embodiment, the lead pitch is set to be equal to or slightly larger than the width of the carrier tape 10.

Subsequently, the guide 40 will be described with reference to FIGS. 3A and 3B. The guide 40 guides the fed carrier tape 10 to the take-up reel 20. The guide 40 has a guide rail 41 and a support shaft 42 that swingably supports the guide rail 41.

The guide rail 41 is a substantially "C" or "U" -shaped member having a top surface and both side surfaces, and the open end side is directed toward the drive shaft (core portion 21 of the take-up reel 20) and is supported. It is supported by the shaft 42. The guide rail 41 is made of a metal material such as iron or aluminum or a resin material.

Further, the guide rail 41 is formed so that the distance between both side surfaces thereof is slightly larger than the width of the carrier tape 10 so that the carrier tape 10 can pass through the open space.

The support shaft 42 supports the guide rail 41 via a bearing such as a bearing so that the guide rail 41 swings smoothly.

Further, the guide rail 41 is provided with a roller bearing 43 on the top surface side near the tip thereof. The roller bearing 43 reduces friction when the carrier tape 10 comes into contact with the carrier tape 10 to improve the runnability of the carrier tape 10, and is provided as needed.

In such a guide 40, although the support shaft 42 is located outside the outer periphery of the side plate 22 of the take-up reel 20, the tip of the guide rail 41 is inserted into the take-up space of the take-up reel 20. .. Since the guide rail 41 is swingably supported around the support shaft 42, the core portion 21 of the take-up reel 20 is supported by the weight of the guide 40 (more accurately, the guide rail 41 and the roller bearing 43). Being urged to the side, the guide position of the carrier tape 10 by the guide 40 can follow the winding diameter of the carrier tape 10 wound on the take-up reel 20.

At this time, the urging force acting on the carrier tape 10 due to the load of the guide 40 (that is, the weight or its own weight) is about half of the load of the guide 40 because the other end side is supported by the support shaft 42 at both ends. ..

The load of the guide 40 (that is, the load of the guide rail 41 and the roller bearing 43) is preferably lighter than the winding tension for winding the carrier tape 10, and is preferably less than half of the winding tension. .. In other words, the take-up device 30 (winding motor) may rotate the take-up reel 20 so that the take-up tension becomes larger than the load of the guide 40.

(Example)
Hereinafter, specific experimental examples for confirming the effect of the present invention and the results thereof will be described.

(Wind product)
The carrier tape 10 having a sheet thickness of 0.25 mm, a sheet width of 8 mm, and a pitch of 4 mm between the storage recesses was spirally wound on a winding reel 20 for 1000 m under the following winding conditions. The take-up reel 20 used had a width of 150 mm, a core diameter of 220 mm, and an outer diameter of the side plate 22 of 420 mm.
(Taking conditions)
The guide form is a guide rail 41 or a conventional guide roller 50, and the weights of the guide rail 41 are 100 g, 200 g, and 300 g (that is, the weight is 0.98N, 1.96N, 2.78N). The roller bearing 43 was not provided at the tip of the guide rail 41.
The take-up tension was 200 g (1.96 N), and the lead pitch was 8.1 mm so that the adjacent carrier tapes 10 did not overlap each other.

＊１ キャリアテープ１０の表面にガイドレール４１による接触傷が発生した。そのため、外観ＮＧ判定となり、反り量を測定するまでもなかった。
＊２ キャリアテープ１０の変形により巻取りを行うことができなかった。そのため、反り量の測定ができなかった。 (Measurement result)
We inspected and measured the quality of the wound product for waviness and warpage, and obtained the following results.

* 1 Contact scratches occurred on the surface of the carrier tape 10 due to the guide rail 41. Therefore, the appearance was NG, and it was not necessary to measure the amount of warpage.
* 2 Winding could not be performed due to the deformation of the carrier tape 10. Therefore, the amount of warpage could not be measured.

In Comparative Example 1, the load of the guide 40 was equivalent to the winding tension, but the guide 40 may or may not follow the winding diameter of the carrier tape 10, and the guide 40 does not properly follow. At the location, the guide 40 came into strong contact with the carrier tape 10, contact scratches were generated on the surface of the carrier tape 10, and the visual inspection determined NG.

In Comparative Example 2, the load of the guide 40 is 100 g heavier (0.98N) than the winding tension, the guide 40 does not follow the winding diameter of the carrier tape 10, and the guide 40 strongly contacts the carrier tape 10. At that point, the carrier tape 10 was deformed, and the carrier tape 10 could not be wound to the end.

In Comparative Example 3, since the guide rollers 50 were wound in the form of the conventional guide rollers 50 (see FIGS. 4A and 4B), the carrier tapes 10 were fitted into the gaps between the lower layer carrier tapes 10 generated in the traverse direction, and the carrier tapes 10 were tilted or stepped. It may be wound up in a dropped state, and many winding swells occurred at that location, and the amount of warpage also increased.

In the first embodiment, the load of the guide 40 is 100 g heavier (0.98 N) lighter than the winding tension, and the guide 40 appropriately follows the winding diameter of the carrier tape 10, so that the carrier tape 10 is placed at a normal position at uniform intervals. I was able to align and wind it up. As a result, there was no swelling around the carrier tape 10, and the amount of warpage could be halved as compared with the conventional product.

In this way, by making the guide 40 follow the winding diameter of the carrier tape 10 that increases, the carrier tape 10 is transferred to the take-up reel 20 (or the wound lower carrier tape 10) from the final guide position by the guide 40. The section until contact can be shortened, and the pulsation of the carrier tape 10 in this section can be suppressed.

As described above, in the method of winding the carrier tape 10 according to the embodiment of the present invention, the carrier tape 10 in which a plurality of feed holes 12 and a plurality of storage recesses 11 for accommodating parts P are formed in the longitudinal direction is used. The take-up reel 20 is wound in a spiral shape, and the take-up reel 20 is formed by a cylindrical core portion 21 and side plates 22 provided on both sides of the core portion 21 to form a take-up space. Yes, the guide 40 that guides the fed carrier tape 10 to the take-up reel 20 is inserted into the take-up space, and the take-up tension is made larger than the load of the guide 40, or the load of the guide 40 is applied. The carrier tape 10 is wound on the take-up reel 20 so as to be smaller than the take-up tension.

Further, the take-up device 30 of the present embodiment rotates a guide 40 for guiding the fed carrier tape 10 to the take-up reel 20, a take-up reel 20 for taking up the carrier tape 10, and a take-up reel 20. The take-up reel 20 is provided with a drive means, and the take-up reel 20 forms a take-up space with a core portion 21 inserted into the drive shaft and side plates 22 provided on both sides of the core portion 21, and the guide 40 is provided. The tip is located in the winding space.

As a result, the section from the final guide position of the carrier tape 10 by the guide 40 to the contact of the carrier tape 10 with the take-up reel 20 can be shortened, and the occurrence of pulsation between them can be prevented. By suppressing the pulsation of the carrier tape 10, the carrier tape 10 can be wound on the take-up reel 20 at a normal position at uniform intervals. Further, since the carrier tape 10 in the lower layer is wound uniformly, the carrier tape 10 in the upper layer is also kept horizontal without tilting, so that the carrier tape 10 wound on the winding reel 20 is not easily deformed and is wound. It is possible to suppress the occurrence of abnormalities such as swell and warp.

Further, the carrier tape 10 is not strongly pressed by the weight of the guide 40, and the guide 40 can appropriately follow the winding diameter of the carrier tape 10 wound.

Further, since these abnormalities in the carrier tape 10 can be suppressed, the tip is not inserted while tilting with respect to the carrier tape 10 or pops out from the storage recess 11 when taping electronic components, and an insertion error of the taping machine is made. It is possible to improve the yield without causing the machine to stop due to the above.

In the winding method of the present embodiment, the guide position by the guide 40 is changed to the outer peripheral side according to the winding diameter of the carrier tape 10 being wound, and the carrier tape 10 is wound on the winding reel 20.
The guide 40 of the present embodiment can swing around a support shaft 42 located outside the outer circumference of the side plate 22 of the take-up reel 20. As a result, the guide position of the carrier tape 10 by the guide 40 can follow the winding diameter of the wound carrier tape 10.
As a result, even if the winding diameter of the carrier tape 10 wound on the take-up reel 20 becomes large, the guide 40 can guide the carrier tape 10 to the take-up reel 20 at an appropriate guide position to the last outermost circumference. ..

The guide 40 of the present embodiment has its own load lighter than the take-up tension.
The drive means of the present embodiment rotates the take-up reel 20 so that the take-up tension becomes larger than the load of the guide 40.

In the winding method of the present embodiment, the carrier tape 10 is spirally wound on the winding reel 20.
The guide 40 of the present embodiment can be traversed relative to the take-up reel 20 by the traverse means.
As a result, the longer carrier tape 10 can be wound on the take-up reel 20 while suppressing the unwinding of the carrier tape 10.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and variations are made within the scope of the gist of the present invention described in the claims. It can be changed.

(Modification example)
In the take-up device 30 of the above embodiment, the take-up reel 20 is traversed with respect to the guide 40, but since it is a relative relationship, conversely, the guide 40 is traversed with respect to the take-up reel 20. You may.

In the winding device 30 of the above embodiment, the winding diameter of the carrier tape 10 being wound is made to follow by the weight of the guide rail 41. For example, the swing angle (tilt) of the guide rail 41 is controlled in position. In this way, the winding diameter of the carrier tape 10 may be followed.

In the winding method of the above embodiment, so-called normal winding is adopted in which the adjacent carrier tapes 10 are wound in a spiral shape so as not to overlap, but the adjacent feed hole side flange portion 13 and the flange portion 14 are combined. A so-called lap winding, which is a lap winding, may be adopted.

10 Carrier tape, 11 Storage recess, 12 Feed hole, 13 Feed hole side flange part, 14 Flange part 20 Winding reel, 21 Core part, 22 Side plate 30 Winding device 40 Guide, 41 Guide rail, 42 Support shaft, 43 Roller Bearing 50 Conventional guide roller 130 Conventional take-up device

Claims (3)

A method of winding a carrier tape in which a plurality of carrier tapes formed in a feed hole and a storage recess in which parts can be stored are formed in a longitudinal direction on a take-up reel.
The take-up reel forms a take-up space with a cylindrical core portion and side plates provided on both sides of the core portion.
A guide for guiding the fed carrier tape to the take-up reel is inserted into the take-up space, and the take-up tension is made larger than the load of the guide, or the load of the guide is taken up. The carrier tape is wound on the take-up reel so as to be smaller than the tension.
A method of winding a carrier tape, which is characterized in that. The guide position by the guide is changed according to the winding diameter of the carrier tape being wound, and the carrier tape is wound on the winding reel.
The method for winding a carrier tape according to claim 1. The carrier tape is spirally wound on the take-up reel.
The method for winding a carrier tape according to claim 1 or 2, wherein the carrier tape is wound up.

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