JP7645210B2 - Carrier tape winding method and carrier tape package - Google Patents

Description

The present invention relates to a method for winding carrier tape and a package of carrier tape used for storing, storing, transporting, and shipping parts.

Conventionally, when multiple parts are individually stored, conveyed, transported, etc., a carrier tape 10 called an embossed carrier tape has been used from the viewpoint of efficiently handling small parts that are difficult to handle, preventing damage to the parts, and storing as many parts as possible (see Patent Document 1).

As shown in FIG. 5, the carrier tape 10 has flanges 12 and 12A on both sides of a band-shaped resin sheet 11, and of the pair of flanges 12 and 12A, at least one of the flanges 12 has multiple sprocket holes 13 punched at predetermined intervals in the longitudinal direction, and multiple pockets 14 are embossed at predetermined intervals in the longitudinal direction at the center between the pair of flanges 12 and 12A, and predetermined parts are stored in each pocket 14.

Such a carrier tape 10 is wound around a take-up reel, but when storing multiple components, it is set in a mounting machine and unwound from the take-up reel, and the components are stored in sequence in multiple pockets 14. A band-shaped cover tape that covers and protects the components is attached to the center of the surface of the resin sheet 11, and then the tape is taken up around the core 2 of an empty take-up reel 1.

When storage, transport, or shipping of a large amount of parts is required, the carrier tape 10 is extended to, for example, 1,000 m or more and wound in multiple stages in a traverse manner around the winding core 2 of an empty winding reel 1 to reduce the winding diameter.

When traverse winding the carrier tape 10 in multiple stages, (A) the carrier tape 10 is wound while moving in the core width direction of the winding reel 1 while shifting by about the width of the resin sheet 11, the direction of movement of the carrier tape 10 is reversed near the side plate 3 of the winding reel 1, the carrier tape 10 is moved in the original direction while shifting by about the width of the resin sheet 11, and then wound. These windings are then repeated to traverse wind the carrier tape 10 in multiple stages (see FIG. 6); (B) the carrier tape 1 is wound around the preceding carrier tape 10 in a row. Either (A) the flange 12 with sprocket holes 13 of the carrier tape 10 is overlapped and wound, and the carrier tape 10 is wound while reversing the moving direction near the side plate 3 of the take-up reel 1, and these windings are repeated (see FIG. 7), or (B) the flange 12 with sprocket holes 13 of the carrier tape 10 as well as the flange 12A without sprocket holes 13 are overlapped and wound, and the carrier tape 10 is wound while reversing the moving direction near the side plate 3 of the take-up reel 1, and these windings are repeated.

JP 2001-247158 A

Conventionally, carrier tape 10 is wound in multiple stages in a traverse manner as described above, but in the case of method (A), the gap between the horizontal rows wound in the traverse winding widens due to vibrations, etc., and the bottom of the pocket 14 in the outer stage fits into this widened gap, causing the winding to collapse.

In contrast, in the cases of methods (B) and (C), although the winding of the carrier tape 10 is stable, when multiple circumferential rows are continuously overlapped and wound, the overlapping portions may slip off due to the slipperiness and thickness of the material of the carrier tape 10, the overlapping margin, and the tension during winding, which may cause the winding pitch to become unstable. For example, when the material of the carrier tape 10 is polyethylene terephthalate resin, which is slippery, the overlapping portions may slip off, causing the winding pitch to become unstable.

In addition, when the thickness of the resin sheet 11 is large, for example, when the thickness of the resin sheet 11 is 0.4 mm or more, if the overlap is large, it becomes difficult to control the winding of the multiple circumferential rows, and the multiple circumferential rows may slip off irregularly, causing the winding to collapse (see FIG. 8). Furthermore, if they slip off, the pitch may expand uncontrollably, resulting in problems such as unintended overlap in the next circumferential row.

The present invention has been made in consideration of the above, and aims to provide a method for winding a carrier tape and a package for the carrier tape that can prevent the overlapping portion from slipping off and improve winding stability.

In order to solve the above problems, the present invention provides a method for winding a carrier tape, the method comprising winding a carrier tape having a plurality of pockets arranged on a band-shaped resin sheet having a thickness of 0.15 mm to 0.55 mm , the method comprising the steps of:
The carrier tape is wound up in multiple stages while moving it in the width direction of the winding core of the take-up reel, and at least some of the stages to be wound are formed into alternating overlapping stages by arranging a plurality of overlapping rows in a row at a predetermined interval in the width direction of the winding core , with gaps being formed between adjacent overlapping rows in the alternating overlapping rows to prevent overlapping, and each overlapping row is formed by winding and arranging overlapping circumferential rows and overlapped circumferential rows alternately in the width direction of the winding core, and the side portion of the carrier tape in the overlapping circumferential row is overlapped and in contact with the side portion of the carrier tape in the adjacent overlapped circumferential row.

The carrier tape is a resin sheet containing polyethylene terephthalate resin, and has a plurality of sprocket holes arranged at a predetermined interval in the longitudinal direction of at least one of both sides of the resin sheet, and a plurality of pockets are recessed at a predetermined interval in the longitudinal direction between both sides of the resin sheet.

The carrier tape can also be configured so that multiple sprocket holes are arranged at a predetermined interval along the longitudinal direction of at least one of both sides of a resin sheet having a thickness of 0.4 mm or more, and multiple pockets are recessed at a predetermined interval along the longitudinal direction between both sides of the resin sheet.

In addition, the remaining stages of the multiple stages to be wound can be formed into normal stages by arranging a plurality of normal circumferential rows, and the carrier tape in each normal circumferential row of this normal stage can be made non-contact with the carrier tape in the adjacent normal circumferential row.
In addition, when winding in multiple stages, the alternate overlapping stages and normal stages can be alternately repeated.
It is also possible to form all of the multiple winding stages as alternating overlapping stages.

In order to solve the above problem, the present invention is characterized in that it is a package of carrier tape wound by the method of winding a carrier tape described in any one of claims 1 to 4.

The resin sheet in the claims is formed from at least one type of resin. The resin sheet may or may not be conductive, insulating, or optically transparent. In addition, at least some of the multiple stages include one stage, an even number of stages, an odd number of stages, or all stages. The side of the carrier tape in the overlapping circumferential row and the side of the carrier tape in the adjacent overlapped circumferential row may be the same width or different widths. When the side of the carrier tape in the overlapping circumferential row is overlapped with the side of the carrier tape in the adjacent overlapped circumferential row, the wide side may be overlapped with the narrow side, or the narrow side may be overlapped with the wide side.

According to the present invention, by alternately winding multiple overlapping circumferential rows and overlapped circumferential rows, alternating overlapping steps that exhibit anti-slip properties are formed, and deviations in cumulative height are suppressed, so that the winding posture of the carrier tape can be stabilized. In addition, the risk of the overlapping parts on the sides slipping off due to the slip characteristics and thickness of the carrier tape material, the cumulative overlap on the sides, and the tension during winding, which can cause the pitch to become unstable during winding, can be eliminated.

According to the present invention, at least some of the multiple stages to be wound are formed into alternating overlapping stages by arranging a plurality of overlapping rows in a row at a predetermined interval in the width direction of the winding core , and gaps are formed between adjacent overlapping rows in this alternating overlapping stage to prevent overlapping, and each overlapping row is formed by winding and arranging overlapping circumferential rows and overlapped circumferential rows alternately in the width direction of the winding core, and the side portions of the carrier tape in the overlapping circumferential rows are overlapped and contacted with the side portions of the carrier tape in the adjacent overlapped circumferential rows, thereby preventing the overlapping portions of the carrier tape from slipping off and improving the stability of winding.
In addition, since the thickness of the resin sheet is 0.15 mm or more and 0.55 mm or less, the strength and moldability of the resin sheet can be improved, and costs can be reduced. Furthermore, even if the thickness of the resin sheet is 0.4 mm or more and the overlapping margin at the sides of the carrier tape is large, control is not difficult when multiple overlapping circumferential rows and overlapped circumferential rows are wound up, and these circumferential rows rarely slip off irregularly and become unwound.

According to the invention described in claim 3, when winding in multiple stages, alternating overlapping stages and normal stages are alternately repeated, so that the winding position of a carrier tape with a width of 24 mm or less can be stabilized.

According to the invention described in claim 4, all the stages are formed as alternating overlapping stages, so that the winding posture of the carrier tape can be stabilized even if the width of the carrier tape is wide, for example, 32 mm or more.

1 is an explanatory diagram showing a schematic state in which the first stage of multiple stages is an alternating overlap stage and the second stage is a normal stage in an embodiment of a carrier tape winding method according to the present invention. FIG. FIG. 1 is an explanatory diagram showing a schematic diagram of a carrier tape in an embodiment of a carrier tape winding method according to the present invention, in which (a) is a plan view showing a carrier tape having sprocket holes punched in one flange, and (b) is a cross-sectional view showing a carrier tape having sprocket holes punched in one flange. FIG. 1 is an explanatory diagram showing a schematic diagram of a carrier tape in an embodiment of a carrier tape winding method according to the present invention, where (a) is a plan view showing a carrier tape with sprocket holes punched on both flanges, and (b) is a cross-sectional view showing a carrier tape with sprocket holes punched on both flanges. 10 is an explanatory diagram showing a schematic diagram of a state in which all of the multiple stages are alternating overlapping stages in a second embodiment of a carrier tape winding method according to the present invention. FIG. FIG. 1 is an explanatory diagram showing a conventional carrier tape. 1 is an explanatory diagram showing a state in which the carrier tape is wound up while being shifted by approximately the width of a resin sheet in the width direction of the core of the winding reel. FIG. 10 is an explanatory diagram showing a state in which flanges of adjacent circumferential rows are overlapped and wound up on a circumferential row of the carrier tape. FIG. 1 is an explanatory diagram showing a state in which multiple circumferential rows of a carrier tape irregularly slide down, causing a miswinding of the carrier tape. FIG.

A preferred embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in Figs. 1 to 4, the method of winding the carrier tape 10 involves winding the carrier tape 10 in multiple stages around the core 2 of the winding reel 1 by traverse winding, dividing the multiple stages into alternating overlapping stages 20 and normal stages 24, forming the alternating overlapping stages 20 by arranging a plurality of overlapping rows 21, and forming each overlapping row 21 by arranging an overlapping circumferential row 22 and an overlapped circumferential row 23. By overlapping the flange 12 of the carrier tape 10 in the overlapping circumferential row 22 with the flange 12A of the carrier tape 10 in the overlapped circumferential row 23, this contributes to the achievement of Goal 9 of the SDGs (the United Nations' international goals for sustainable development, consisting of 17 global goals and 169 targets (achievement criteria)) adopted at the United Nations Summit.

As partially shown in FIG. 1, the take-up reel 1 has a cylindrical core 2, with side plates 3 attached to both open ends of the core 2, and is rotatably supported by a mounting machine (not shown). The core 2 is formed into a cylindrical shape from a specified resin or paper, and the carrier tape 10 is wound tautly around the outer periphery. Each side plate 3 is formed into a disk from a specified resin (e.g., polyphenylene ether resin, etc.). In such a take-up reel 1, the carrier tape 10, which is long in the radial direction of the core 2, is traverse-wound in multiple stages.

As shown in Figures 2(a) and (b) and Figures 3(a) and (b), the carrier tape 10 comprises a flexible band-shaped resin sheet 11, the left and right sides of which are formed into plate-shaped flanges 12 and 12A, respectively, and of the pair of left and right flanges 12 and 12A, at least one of the flanges 12 has a number of sprocket holes 13 punched at predetermined intervals in the longitudinal direction, and a number of pockets 14 are embossed in the center between the pair of flanges 12 and 12A, and components are individually stored in each pocket 14.

The resin sheet 11 is formed into a long strip shape with a thickness of 0.1 mm to 0.5 mm by extrusion molding or the like using a molding material containing a specific resin. The specific resin of this resin sheet 11 is not particularly limited to polyethylene terephthalate resin, polycarbonate resin, ABS resin, MBS resin, etc., but from the viewpoint of preventing the carrier tape 10 from curling or warping, it is preferable that the main component is a hydrocarbon-based resin. Examples of hydrocarbon-based resins include transparent polystyrene resin, which has excellent versatility, conductive polystyrene resin, which can prevent static electricity troubles, and polyethylene resin.

The resin sheet 11 may be formed from one type of resin, but may be formed from multiple types of resin as necessary. For example, when it is desired to achieve multi-functionality, the resin sheet 11 may be formed into a laminated structure in which the first layer is a thin polyethylene terephthalate resin, the second layer is a thick polystyrene resin, and the third layer is a thin polyethylene terephthalate resin. It may also have a laminated structure in which the first layer is a polystyrene resin, the second layer is a polyethylene resin, and the third layer is a polystyrene resin, or a three-layer structure in which the first layer is a thin ABS resin, the second layer is a thick polystyrene resin, and the third layer is a thin ABS resin.

The width of the resin sheet 11 is set based on the JIS standard to 8 mm, 12 mm, 16 mm, 24 mm, 32 mm, 44 mm, 56 mm, etc., and when it is 32 mm or more, multiple sprocket holes 13 are punched at predetermined intervals in the longitudinal direction of the pair of flanges 12, 12A (see FIG. 3(a)), and when it is 24 mm or less, multiple sprocket holes 13 are punched at predetermined intervals in the longitudinal direction of one of the flanges 12 (see FIG. 2(a)).

When the width of the resin sheet 11 is 32 mm or more, the pair of flanges 12, 12A of the resin sheet 11 are secured to have a width of at least 3.0 mm or more, preferably 3.1 mm or more, as necessary. In contrast, when the width of the resin sheet 11 is 24 mm or less, one flange 12 with sprocket holes 13 is secured to have a width of 3.0 mm or more, preferably 3.1 mm or more, as necessary, and the other flange 12A without sprocket holes 13 is secured to have a width of 0.5 mm or more, preferably 1 mm or more.

The thickness of the resin sheet 11 is 0.1 mm or more and 0.6 mm or less, but from the viewpoint of the strength, formability, and cost of the resin sheet 11, it is preferably 0.15 mm or more and 0.55 mm or less, and more preferably 0.2 mm or more and 0.5 mm or less.

The multiple pockets 14 are arranged at a predetermined interval in the longitudinal direction of the center of the resin sheet 11, and each pocket 14 is formed by heat pressing into a flat rectangular recess, and components such as electronic components (not shown) are stored in the pockets 14 through gaps. The components are not particularly limited, but examples include large aluminum electrolytic capacitors, resistive elements, diodes, IC chips, leaf springs, etc. Once the components are stored in such pockets 14, a transparent cover tape is gradually applied in the longitudinal direction of the center of the resin sheet 11 to cover and protect the components.

Now, under the control of a predetermined program, the carrier tape 10 is wound up in multiple stages while moving through the inlet guide roll in the width direction (left and right direction in Figure 1) of the core 2 of the take-up reel 1. As shown in Figure 1, these multiple stages are formed into alternating overlap stages 20, either of odd stages (1 stage, 3 stages, 5 stages, etc.) or even stages (2 stages, 4 stages, 6 stages, etc.), which exhibit anti-slip properties, and the other stages are formed into normal stages 24.

The alternating overlapping rows 20 are formed by arranging multiple overlapping rows 21 (three rows in FIG. 1) in a horizontal row at a predetermined interval in the width direction of the winding core 2, and it is preferable that a small gap is formed between adjacent overlapping rows 21 so that they do not overlap. Each overlapping row 21 is formed by arranging an overlapping peripheral row 22 and an overlapped peripheral row 23 adjacent to each other in the width direction of the winding core 2, and the flange 12 of the carrier tape 10 in the overlapping peripheral row 22 is preferably overlapped and in contact with the flange 12A of the carrier tape 10 in the adjacent overlapped peripheral row 23.

The normal stage 24 is formed by arranging multiple normal circumferential rows 25 with small gaps in the width direction of the winding core 2. The carrier tape 10 of each normal circumferential row 25 is not in contact with the carrier tape 10 of the adjacent normal circumferential rows 25.

In the above, when traverse winding the carrier tape 10 in multiple stages, as shown in FIG. 1, first, the carrier tape 10 is wound while moving it from one end of the winding core 2 of the take-up reel 1 toward the other end to form adjacent odd-numbered overlapped circumferential rows 23 and even-numbered overlapped circumferential rows 22, thereby forming an overlapping row 21, and this operation is repeated up to the vicinity of the other end of the winding core 2 to form the first stage into an alternating overlapping stage 20. During these operations, the flange 12 of the carrier tape 10 in the overlapping circumferential row 22 overlaps and contacts the flange 12A of the carrier tape 10 in the adjacent overlapping circumferential row 23 from the outside (from the upper side in FIG. 1).

Once the first tier has been formed into an alternating overlapping tier 20 in this manner, the direction of movement of the carrier tape 10 is reversed, and the carrier tape 10 is wound normally while moving from the other end of the winding core 2 of the take-up reel 1 toward one end, forming multiple normal circumferential rows 25, and this process is repeated until the second tier is formed into a normal tier 24 near one end of the winding core 2.

After the second row is formed into a normal row 24, the third odd-numbered row is formed into an alternating overlap row 20, and the fourth even-numbered row is formed into a normal row 24. By repeating these steps, the carrier tape 10 can be traverse-wound and wound up in multiple rows to obtain a package of the carrier tape 10.

Next, we will explain the case where an 8 mm wide carrier tape 10 is traverse wound in multiple stages. This carrier tape 10 has a resin sheet 11 with a width of 8 mm, a flange 12 with sprocket holes 13 with a width of 3.1 mm, and a flange 12A without sprocket holes 13 with a width of 0.8 mm.

First, the carrier tape 10 is wound while moving it from one end of the winding core 2 of the winding reel 1 toward the other end to form the first row of the first stage. At this time, the width of the lateral movement of the lead-in guide roll per revolution of the winding reel 1 is set to 8.1 mm, and the flange 12A of the carrier tape 10 is wound so as not to overlap the preceding carrier tape 10. After the carrier tape 10 is wound in this way, the second row of the first stage is formed, but at this time, the width of the lateral movement of the lead-in guide roll per revolution of the winding reel 1 is changed to 5.0 mm.

Next, the third row of the first stage is formed, but the width of the lateral movement of the incoming guide roll per revolution of the winding reel 1 is set to 8.1 mm. When the fourth row of the first stage is formed, the width of the lateral movement of the incoming guide roll per revolution of the winding reel 1 is changed to 5.0 mm, and these changes in the width of the movement of the incoming guide roll are alternately repeated until near the other end of the winding core 2.

When the carrier tape 10 has moved to the vicinity of the other end of the winding core 2, the direction of movement of the carrier tape 10 is reversed, and the carrier tape 10 is wound while moving from the other end of the winding core 2 toward one end to form the first circumferential row of the second stage. At this time, the width of the lateral movement of the inlet guide roll for each revolution of the winding reel 1 is set to 8.1 mm.

After the first row of the second stage is formed, the second row of the second stage is formed. At this time, the width of the lateral movement of the inlet guide roll per revolution of the winding reel 1 is changed to 7.5 mm, and the flange 12 of the carrier tape 10 is overlapped by 0.6 mm over the flange 12A of the preceding carrier tape 10. By repeating these steps as many times as necessary, the carrier tape 10 with a width of 8 mm can be traverse-wound in multiple stages to obtain a package of the carrier tape 10.

As described above, by alternately winding a plurality of overlapping circumferential rows 22 and overlapped circumferential rows 23, an alternating overlapping step 20 is formed that exhibits an anti-slip function, and deviation in cumulative height is suppressed, so that the winding posture of the carrier tape 10 can be stabilized. In particular, the winding posture of a carrier tape 10 having a width of 24 mm or less in FIG. 2 can be remarkably stabilized.

In addition, it is possible to eliminate the risk of the overlapping portions of the flanges 12 and 12A slipping off due to the sliding characteristics and thickness of the material of the carrier tape 10, the cumulative overlap of the flanges 12 and 12A, and the tension during winding, which may cause the pitch to become unstable during winding. For example, even when the material of the carrier tape 10 is polyethylene terephthalate resin, which is slippery, it is possible to prevent the overlapping portions of the flanges 12 and 12A from slipping off and cause the pitch to become unstable during winding.

In addition, even if the thickness of the resin sheet 11 is 0.4 mm or more and the overlap of the flanges 12, 12A is large, control does not become difficult when the multiple overlapping circumferential rows 22 and overlapped circumferential rows 23 are wound, and these circumferential rows do not slip off irregularly and become unwound. Therefore, there is no need to wind the carrier tape 10 in multiple stages using normal winding. Furthermore, because it is possible to prevent the carrier tape 10 from slipping off, uncontrollable pitch expansion does not occur, and it is possible to prevent problems such as unintended overlaps in the next circumferential row.

Next, FIG. 4 shows a second embodiment of the present invention, in which the carrier tape 10 is wound in multiple stages around the winding core 2 of the winding reel 1 by traverse winding, and all of the multiple stages are formed into alternating overlapping stages 20.

It is preferable that the overlapping rows 21 are adjacent to each other with a small gap between them, but they may be in contact with each other. Also, it is preferable that the flange 12 of the carrier tape 10 in the overlapping peripheral row 22 be overlapped and in contact with the flange 12A of the carrier tape 10 in the adjacent overlapped peripheral row 23, but they may be overlapped and in contact with each other without contacting each other.

In the above, when traverse winding the carrier tape 10 in multiple stages, as shown in Figure 4, first, the carrier tape 10 is wound while moving it from one end of the winding core 2 of the take-up reel 1 toward the other end to form adjacent odd-numbered overlapping circumferential rows 23 and even-numbered overlapping circumferential rows 22, thereby forming an overlapping row 21, and this process is repeated until near the other end of the winding core 2 to form the first stage into an alternating overlapping stage 20.

After the first stage is thus formed into the alternating overlap stage 20, the direction of movement of the carrier tape 10 is reversed, and the carrier tape 10 is wound while moving from the other end of the winding core 2 toward one end to form adjacent odd-numbered overlapped circumferential rows 23 and even-numbered overlapped circumferential rows 22, thereby forming an overlapped row 21. This process is repeated up to the vicinity of one end of the winding core 2 to form the second stage into the alternating overlap stage 20. During these processes, the flange 12A of the carrier tape 10 in the overlapped circumferential row 22 overlaps and contacts the flange 12 of the carrier tape 10 in the adjacent overlapped circumferential row 23 from the outside (from the upper side in FIG. 4).

After the second row is formed into an alternating overlap row 20, the third odd-numbered row is formed into an alternating overlap row 20 similar to the first row, and the fourth even-numbered row is formed into an alternating overlap row 20 similar to the second row. By repeating these steps, the carrier tape 10 can be traverse-wound and wound up in multiple rows to obtain a package of the carrier tape 10. The other parts are the same as in the above embodiment, so a description thereof will be omitted.

In this embodiment, the same effects as those of the above embodiment can be expected, and since all the stages are formed into alternating overlapping stages 20, it is clear that the winding posture of the carrier tape 10 can be significantly stabilized even if the carrier tape 10 has a width of 32 mm or more as shown in Figure 3.

In the above embodiment, when the carrier tape 10 is wound in multiple stages, either the odd-numbered stages or the even-numbered stages are set as alternating overlap stages 20, but this is not limited to this. For example, specific stages (e.g., the first stage, the fifth stage, the tenth stage, etc.) may be set as alternating overlap stages 20, and the remaining stages may be set as normal stages 24.

Hereinafter, examples of the carrier tape winding method according to the present invention will be described together with comparative examples.
Example 1
First, a take-up reel and a carrier tape were prepared. The take-up reel used had a core diameter of 220 mm, an outer diameter of each side plate of 420 mm, and a width of 150 mm. The carrier tape used had a resin sheet width of 8 mm. The width of the sprocket flange with sprocket holes of this carrier tape was measured to be 3.1 mm, and the width of the free flange without sprocket holes was measured to be 0.8 mm. Each pocket of the carrier tape was measured to be 3.1 mm wide x 2.5 mm long x 1.4 mm deep.

After preparing the take-up reel and carrier tape, the carrier tape was wound while moving it from one end of the take-up reel's core toward the other end with the inlet guide roll to form adjacent overlapping circumferential rows and overlapping circumferential rows, thereby forming an overlapping row, and this process was repeated until near the other end of the core to form the first row into an alternating overlapping row. During this process, the sprocket flange of the carrier tape in the overlapping circumferential row was overlapped from the outside and in contact with the free flange of the carrier tape in the adjacent overlapping circumferential row.

After the first stage was formed as an alternating overlap stage, the direction of movement of the carrier tape was reversed, and the carrier tape was wound while moving it from the other end of the winding core toward one end using the inlet guide roll to form adjacent overlapped circumferential rows and overlapping circumferential rows, thereby forming an overlapping row. This process was repeated up to the vicinity of one end of the winding core to form the second stage as an alternating overlapping row. During this process, the free flange of the carrier tape in the overlapping circumferential row was overlapped from the outside and brought into contact with the sprocket flange of the carrier tape in the adjacent overlapping circumferential row.

The amount of movement of the incoming guide roll was set to 5.0 mm or 8.1 mm in the alternating overlapping stage where the sprocket flange overlaps the free flange from the outside. In contrast, it was set to 7.5 mm or 8.1 mm in the alternating overlapping stage where the free flange overlaps the sprocket flange from the outside. In addition, during the above work, a constant tension was applied to the carrier tape, and this tension was set to 40 N.

After the carrier tape was wound around the take-up reel in multiple traverse windings to obtain a carrier tape package, the appearance of this package was observed and its quality was evaluated. Specifically, the carrier tape was visually observed, and the presence or absence of pocket fitting and winding irregularity was evaluated by recording the results as ○ or × in Table 1. ○ indicates that there was no problem with the practicality of the package, and × indicates that there was doubt about the practicality of the package.

Comparative Example 1
The present embodiment is basically the same as the first embodiment, but the movement of the inlet guide roll was changed to only 8.1 mm in the alternating overlapping stage where the sprocket flange overlaps the free flange from the outside. Also, the movement of the inlet guide roll was changed to only 8.1 mm in the alternating overlapping stage where the free flange overlaps the sprocket flange from the outside.

The carrier tape was wound around the take-up reel in a multi-stage traverse winding to obtain a package of the carrier tape, and the appearance of this package was then observed. Specifically, the carrier tape was visually observed, and the presence or absence of pocket fitting and winding irregularities was summarized in Table 1.

Comparative Example 2
The present embodiment is basically the same as the first embodiment, but the movement amount of the inlet guide roll was changed to only 5.0 mm in the alternating overlapping stage where the sprocket flange overlaps the free flange from the outside, and to only 8.1 mm in the alternating overlapping stage where the free flange overlaps the sprocket flange from the outside.

After the carrier tape was wound around the take-up reel in multiple traverse windings to obtain a package of the carrier tape, the appearance of the package was observed and evaluated for its quality. Specifically, the carrier tape was visually observed, and the presence or absence of pocket fitting and winding irregularities were evaluated by recording them with ○ or × in Table 1.

〔evaluation〕
In the case of Example 1, since no pockets were fitted into the gaps in the carrier tape, there were no irregularities on the surface of the carrier tape, and no irregular winding was observed, resulting in very good results.
In contrast, in the case of Comparative Example 1, the bottom of the pocket fitted into the gap of the carrier tape, causing unevenness on the surface of the carrier tape, raising doubts about practical use. Also, in the case of Comparative Example 2, the bottom of the pocket fitted into the gap of the carrier tape, causing unevenness on the surface of the carrier tape. In addition, random slip-off occurred at the overlapping portion of the flange, and winding irregularities were confirmed. This winding irregularity raised serious doubts about practical use.

The carrier tape winding method and carrier tape packaging of the present invention are used in fields such as storing, storing, transporting, and shipping parts.

1 Winding reel 2 Winding core 10 Carrier tape 11 Resin sheet 12 Flange (side portion)
12A Flange (side)
13 sprocket hole 14 pocket 20 alternating overlapping row 21 overlapping row 22 overlapping circumferential row 23 overlapped circumferential row 24 normal row 25 normal circumferential row

Claims (5)

A method for winding a carrier tape, the method comprising winding a carrier tape having a plurality of pockets arranged on a band-shaped resin sheet having a thickness of 0.15 mm or more and 0.55 mm or less , the method comprising the steps of:
A method for winding a carrier tape, comprising: moving the carrier tape in the width direction of a winding core of a take-up reel while winding it up in multiple stages; forming at least some of the stages to be wound into alternating overlapping stages by arranging a plurality of overlapping rows in a row at a predetermined interval in the width direction of the winding core ; forming gaps between adjacent overlapping rows in the alternating overlapping stages to prevent overlap; forming each overlapping row by winding and arranging overlapping circumferential rows alternately in the width direction of the winding core; and overlapping a side portion of the carrier tape in an overlapping circumferential row so as to overlap and contact a side portion of the carrier tape in an adjacent overlapping circumferential row. A method for winding a carrier tape according to claim 1, in which the remaining stages of the multiple stages to be wound are formed into normal stages by arranging multiple normal circumferential rows, and the carrier tape in each normal circumferential row of the normal stages is not in contact with the carrier tape in the adjacent normal circumferential rows. The method for winding a carrier tape according to claim 2, in which, when winding in multiple stages, alternating overlapping stages and normal stages are repeatedly wound. The method for winding a carrier tape according to claim 1, in which all of the multiple winding stages are formed as alternating overlapping stages. A package of carrier tape that has been wound by the method for winding a carrier tape described in any one of claims 1 to 4.

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