JP2023146752A - Winding method of carrier tape and packaged body of carrier tape - Google Patents

Abstract

To provide a winding method of carrier tape and a packaged body of carrier tape, which are capable of preventing overlapping portions from slipping off and of improving the stability of winding.SOLUTION: Carrier tape 10 is wound in multiple layers while being moved in the winding core width direction of a winding reel 1, and some of these multiple layers are formed into alternating overlapping layers 20 by arranging multiple overlapping rows 21, and each overlapping row 21 of these alternating overlapping layers 20 is formed by arranging overlapping peripheral rows 22 and overlapped peripheral rows 23. A flange 12 of the carrier tape 10 in the overlapping circumference row 22 is overlapped with a flange 12A of the carrier tape 10 in the adjacent overlapped circumference row 23. By winding a plurality of overlapping circumference rows 22 and the overlapped circumference rows 23 alternately, the alternating overlapping layers 20 are formed, which provide anti-slip functionality, and suppress cumulative height shift, thereby stabilization of the winding posture of the carrier tape 10 to be expected.SELECTED DRAWING: Figure 1

Description

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

Conventionally, when storing, transporting, and storing multiple parts individually, it is necessary to efficiently handle small parts that are difficult to handle, prevent damage to parts, or move as many parts as possible. A carrier tape 10 called an embossed carrier tape is used from the viewpoint of storing the embossed carrier tape (see Patent Document 1).

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

Such a carrier tape 10 is wound around a take-up reel, but when storing a plurality of components, it is set in a mounting machine and unwound from the take-up reel, and the parts are stored in a plurality of pockets 14 one after another. After a band-shaped cover tape for covering and protecting the parts is attached to the central part of the surface of the resin sheet 11, the resin sheet 11 is wound onto the core 2 of the empty take-up reel 1.

By the way, when a large amount of parts is required to be stored, transported, or transported, the carrier tape 10 is stretched to a length of 1000 m or more, for example, and is traverse-wound in multiple stages around the winding core 2 of an empty take-up reel 1 to increase the winding diameter. Suppression will be attempted.

When traverse winding the carrier tape 10 in multiple stages, (A) move the carrier tape 10 in the width direction of the winding core of the take-up reel 1 while shifting it by the width of the resin sheet 11 and wind it; 3, the moving direction of the carrier tape 10 is reversed, and the carrier tape 10 is shifted by the width of the resin sheet 11 while being moved in the original direction and wound up. Hereafter, these winding steps are repeated to form the carrier tape 10 in multiple stages. Traverse winding method (see FIG. 6), (B) winding only the flange 12 with the sprocket hole 13 of the carrier tape 10 overlapping the circumferential row of the preceding carrier tape 10, and winding the carrier tape near the side plate 3 of the take-up reel 1. Winding the tape 10 while reversing the moving direction, and repeating these winding steps (see FIG. 7). Either of the following methods is adopted: the flange 12A is also overlapped and wound up, the moving direction of the carrier tape 10 is reversed near the side plate 3 of the take-up reel 1, and the winding process is repeated.

Japanese Patent Application Publication No. 2001-247158

The conventional carrier tape 10 is traverse-wound in multiple stages as described above, but in the case of method (A), the gap between the circumferential rows in the lateral direction wound in the traverse-wound is There is a problem in that the roll spreads due to vibration or the like, and the bottom of the outer pocket 14 fits into the widened gap, causing the roll to collapse.

On the other hand, in the case of methods (B) and (C), although the winding of the carrier tape 10 is stable, if multiple circumferential rows are wound in succession, the material of the carrier tape 10 may slip. Due to the characteristics, thickness, overlap margin, and tension during winding, there is a risk that the overlapping portion may slip off and the pitch during winding may become unstable. For example, if the material of the carrier tape 10 is slippery polyethylene terephthalate resin, the overlapping portion may slide off, making the pitch during winding unstable.

Further, when the resin sheet 11 is thick, for example, when the thickness of the resin sheet 11 is 0.4 mm or more, when the overlap margin becomes large, it becomes difficult to control when a plurality of circumferential rows are wound. There is a problem that a plurality of circumferential rows slip down irregularly, causing the roll to collapse (see FIG. 8). Furthermore, if the wheels slip off, the pitch will expand uncontrollably, resulting in problems such as unintended overlapping in the next row.

The present invention was made in view of the above, and an object of the present invention is to provide a carrier tape winding method and a carrier tape package that can prevent the overlapping portion from slipping and improve winding stability. There is.

In order to solve the above problems, the present invention provides a carrier tape winding method for winding a carrier tape in which a plurality of pockets are arranged on a band-shaped resin sheet, comprising:
The carrier tape is wound in multiple stages while moving in the width direction of the winding core of the take-up reel, and at least some of these winding stages are formed into alternating overlapping stages by arranging a plurality of overlapping rows. Each overlapping row of the alternating overlapping rows is formed by arranging an overlapping circumferential row and an overlapping circumferential row, and the side of the carrier tape in the overlapping circumferential row is connected to the side of the carrier tape in the adjacent overlapping circumferential row. It is characterized by overlapping parts.

Note that the carrier tape is a resin sheet containing polyethylene terephthalate resin, and a plurality of sprocket holes are arranged at predetermined intervals in the longitudinal direction of at least one side of both sides of the resin sheet. A plurality of pockets may be formed at predetermined intervals in the longitudinal direction between both sides of the sheet.

In addition, the carrier tape has a plurality of sprocket holes lined up at a predetermined interval in the longitudinal direction of at least one side of both sides of a resin sheet having a thickness of 0.4 mm or more, and A plurality of pockets may be formed in the direction at predetermined intervals.

In addition, among the multiple stages to be wound, the remaining stages are formed into ordinary stages by arranging a plurality of ordinary circumference rows, and the carrier tape in each ordinary circumference row of this ordinary stage is connected to the carrier tape in the adjacent ordinary circumference row. It can be non-contact.
In addition, when winding in multiple stages, the winding can be performed by alternately repeating alternately overlapping stages and normal stages.
Furthermore, among the multiple stages of winding, it is also possible to form all the stages into alternately overlapping stages.

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

Here, the resin sheet in the claims is molded from at least one type of resin. This resin sheet does not particularly require electrical conductivity, insulation, or light transmittance. Further, among the multiple stages, at least some stages include one stage, an even number stage, an odd number stage, or all stages. The side portions of the carrier tape in the overlapping circumferential row and the side portions of the carrier tape in the adjacent overlapping circumferential row may have the same width or may have different widths. When overlapping the sides of the carrier tape in the overlapping circumferential row with the side parts of the carrier tape in the adjacent overlapping circumferential row, one wide side may be overlapped with the other narrow side; The other narrow side may be overlapped with the wider one side.

According to the present invention, a plurality of overlapping circumferential rows and overlapping circumferential rows are wound alternately to form alternating overlapping steps that exhibit an anti-slip function and to suppress deviations in cumulative height. It is possible to stabilize the winding posture. In addition, due to the sliding properties and thickness of the carrier tape material, the accumulation of overlap on the sides, and the tension during winding, there is a risk that the overlapping parts of the sides may slip off and the pitch during winding may become unstable. It can be wiped away.

According to the present invention, at least some of the stages to be wound are formed into alternately overlapping stages by arranging a plurality of overlapping rows, and each overlapping row of the alternately overlapping stages is connected to an overlapping circumferential row. The carrier tape is formed by arranging overlapping circumferential rows, and the side portion of the carrier tape in the overlapping circumferential row is overlapped with the side portion of the carrier tape in the adjacent overlapping circumferential row, so that the overlapping portion of the carrier tape is prevented from slipping. This has the effect of improving winding stability.

According to the third aspect of the present invention, when winding is performed in multiple stages, the alternately overlapping stage and normal stage are alternately repeated, so that the winding posture of a carrier tape having a width of 24 mm or less can be stabilized.

According to the fourth aspect of the present invention, since all the stages are formed into alternately overlapping stages, even if the width of the carrier tape is as wide as 32 mm or more, the winding posture of the carrier tape can be stabilized.

FIG. 3 is an explanatory diagram schematically showing a state in which the first stage of the multi-stage is formed as an alternately overlapping stage and the second stage is formed as a normal stage in an embodiment of the carrier tape winding method according to the present invention. FIG. 2 is an explanatory diagram schematically showing a carrier tape in an embodiment of the carrier tape winding method according to the present invention, (a) is a plan view showing a carrier tape with sprocket holes punched in one flange, (b) The figure is a sectional view showing a carrier tape with sprocket holes punched in one flange. 1 is an explanatory diagram schematically showing a carrier tape in an embodiment of the carrier tape winding method according to the present invention, (a) is a plan view showing a carrier tape with sprocket holes punched in both flanges, (b) The figure is a sectional view showing a carrier tape with sprocket holes punched in both flanges. FIG. 7 is an explanatory diagram schematically showing a state in which all the multistage stages are alternately stacked in a second embodiment of the carrier tape winding method according to the present invention. It is an explanatory view showing a conventional carrier tape. FIG. 6 is an explanatory diagram showing a state in which the carrier tape is moved in the core width direction of the take-up reel while being shifted by about the width of the resin sheet and is wound up. It is an explanatory view showing a state where flanges of circumferential rows adjacent to the circumferential rows of the carrier tape are rolled up in an overlapping manner. FIG. 3 is an explanatory diagram showing a state where a plurality of circumferential rows of carrier tape slip irregularly and roll collapse occurs.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. The method for winding up the carrier tape 10 in this embodiment is as shown in FIGS. 1 to 4. The carrier tape 10 is wound in multiple stages by traverse winding, and the multi-stage winding is divided into an alternately overlapping stage 20 and a normal stage 24, and the alternately overlapping stage 20 is formed by arranging a plurality of overlapping rows 21, By forming each overlapping row 21 in an arrangement of an overlapping circumferential row 22 and an overlapping circumferential row 23, and 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 overlapping circumferential row 23, , contributed 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. do.

As partially shown in FIG. 1, the take-up reel 1 includes a cylindrical winding core 2, and side plates 3 are attached to both open ends of the winding core 2, and are rotated by a mounting machine (not shown). possible to be pivoted. The winding core 2 is formed into a cylindrical shape using a predetermined resin or paper, and the carrier tape 10 is wound around the outer peripheral surface under tension. Further, each side plate 3 is formed into a disk shape using a predetermined resin (for example, polyphenylene ether resin, etc.). In such a take-up reel 1, a carrier tape 10 that is long in the radial direction of the winding core 2 is traverse-wound in multiple stages.

As shown in FIGS. 2(a) and 3(b) and 3(a) and 3(b), the carrier tape 10 includes a flexible band-shaped resin sheet 11, and the left and right sides of the resin sheet 11 A plurality of sprocket holes 13 are punched at predetermined intervals in the longitudinal direction of at least one of the left and right flanges 12, 12A, and a pair of A plurality of pockets 14 are embossed in the center between the flanges 12 and 12A, and parts are individually stored in each pocket 14.

The resin sheet 11 is formed into a long band shape with a thickness of 0.1 mm or more and 0.5 mm or less by extrusion molding or the like using a molding material containing a predetermined resin. The predetermined resin of this resin sheet 11 is not particularly limited, such as polyethylene terephthalate resin, polycarbonate resin, ABS resin, MBS resin, etc., but from the viewpoint of preventing curling and warping of the carrier tape 10, It is preferable that the main component is a hydrocarbon resin. Examples of hydrocarbon resins include transparent polystyrene resins that are highly versatile, conductive polystyrene resins that can prevent static electricity problems, and polyethylene resins.

The resin sheet 11 may be formed of one type of resin, but may be formed of multiple types of resin as necessary. For example, when the resin sheet 11 is desired to be multifunctional, 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's okay. Alternatively, a laminated structure may be used in which the first layer is polystyrene resin, the second layer is polyethylene resin, and the third layer is polystyrene resin, or the first layer is thin ABS resin, the second layer is thick polystyrene resin, and the third layer is polystyrene resin. A three-layer structure of thin ABS resin may also be used.

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

When the width of the resin sheet 11 is 32 mm or more, the pair of flanges 12 and 12A of the resin sheet 11 have a width of at least 3.0 mm or more, preferably 3.1 mm or more, if necessary. On the other hand, when the width of the resin sheet 11 is 24 mm or less, one flange 12 with the sprocket hole 13 is secured to have a width of 3.0 mm or more, preferably 3.1 mm or more, and the sprocket hole is The other flange 12A where 13 is not punched has 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, moldability, and cost of the resin sheet 11, the thickness is preferably 0.15 mm or more and 0.55 m or less, more preferably 0.1 mm or more and 0.55 m or less, and more preferably 0.1 mm or more and 0.6 mm or less. .2 mm or more and 0.5 mm or less is preferable.

The plurality of pockets 14 are arranged at predetermined intervals in the longitudinal direction of the center of the resin sheet 11, and each pocket 14 is recessed into a rectangular planar shape by heat pressing. is stored through the gap. Examples of the components include, but are not particularly limited to, large aluminum electrolytic capacitors, resistive elements, diodes, IC chips, leaf springs, and the like. When a component is stored in such a pocket 14, a transparent cover tape for covering and protecting the component is gradually pasted in the longitudinal direction of the center of the resin sheet 11.

Now, under the control of a predetermined program, the carrier tape 10 is wound in multiple stages while moving in the width direction of the winding core 2 of the take-up reel 1 (in the left-right direction in FIG. 1) via an entry guide roll. , As shown in Figure 1, one of the odd numbered steps (1st step, 3rd step, 5th step, etc.) and the even numbered steps (2nd step, 4th step, 6th step, etc.) exhibits an anti-slip function. One is formed in the step 20, and the other is formed in the normal step 24.

The alternating overlapping stages 20 are formed by arranging a plurality of (three in FIG. 1) overlapping rows 21 in a horizontal line at predetermined intervals in the width direction of the winding core 2. It is preferable that a slight gap be formed between the two so that they do not overlap. Each overlapping row 21 is formed by arranging a circumferential row 22 and an overlapped circumferential row 23 adjacent to each other in the width direction of the winding core 2, and the flanges 12 of the carrier tape 10 in the overlapping circumferential row 22 are adjacent to each other. The flange 12A of the carrier tape 10 in the overlapping circumferential row 23 is preferably overlapped and contacted.

The ordinary stages 24 are formed by arranging a plurality of ordinary circumferential rows 25 with slight gaps in between in the width direction of the winding core 2. The carrier tapes 10 in each normal circumferential row 25 are not in contact with the carrier tapes 10 in other adjacent normal circumferential rows 25.

In the above, when the carrier tape 10 is traverse-wound in multiple stages, as shown in FIG. Odd-numbered overlapping circumferential rows 23 and even-numbered overlapping circumferential rows 22 are formed adjacent to each other, and they form an overlapping row 21, and this operation is repeated up to the vicinity of the other end of the winding core 2 to form one stage. The eyes are formed in alternating overlapping steps 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 top in FIG. 1).

After the first stage is formed into the alternately overlapping stages 20, the moving direction of the carrier tape 10 is reversed, and the carrier tape 10 is moved from the other end of the winding core 2 of the take-up reel 1 toward one end while being normally wound. It is wound to form a plurality of regular circumferential rows 25, and this operation is repeated until near one end of the winding core 2 to form the second stage as the regular stage 24.

Once the second stage is formed on the normal stage 24, the third odd numbered stage is formed on the alternating overlapping stage 20, and the fourth even numbered stage is formed on the normal stage 24.If these steps are repeated, the carrier tape A package of the carrier tape 10 can be obtained by traversing and winding the carrier tape 10 in multiple stages.

Next, a case will be described in which the carrier tape 10 having a width of 8 mm is traverse-wound in multiple stages. In this carrier tape 10, the width of the resin sheet 11 is 8 mm, the width of the flange 12 with sprocket holes 13 is 3.1 mm, and the width of the flange 12A without sprocket holes 13 is 0.8 mm.

First, the carrier tape 10 is wound while moving from one end of the core 2 of the take-up reel 1 to the other end to form the circumferential row of the first stage and first row. The width of movement of the incoming line guide roll in the lateral direction per rotation is 8.1 mm, and the flange 12A of the carrier tape 10 is wound up so as not to overlap the preceding carrier tape 10. After winding up the carrier tape 10 in this way, the circumferential row of the first stage and second row is formed. At this time, the horizontal movement width of the incoming line guide roll for each rotation of the take-up reel 1 is set to 5.0 mm. change.

Next, the third row of the first stage is formed, and at this time, the horizontal movement width of the incoming line guide roll for each rotation of the take-up reel 1 is set to 8.1 mm, and then the third row of the first stage is formed. When forming four circumferential rows, the width of movement of the incoming wire guide rolls in the lateral direction per rotation of the take-up reel 1 was changed to 5.0 mm; Repeat alternately until near the other end of the winding core 2.

When the carrier tape 10 moves to the vicinity of the other end of the winding core 2, the moving direction 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. A circumferential row of the first row is formed. At this time, the width of movement of the incoming line guide roll in the lateral direction per rotation of the take-up reel 1 is set to 8.1 mm.

After forming the circumferential row of the first row of the second stage, the circumferential row of the second row of the second stage is subsequently formed. The width is changed to 7.5 mm, and the flange 12 of the carrier tape 10 overlaps the flange 12A of the preceding carrier tape 10 by 0.6 mm. Hereinafter, by repeating these operations a necessary number of stages, the carrier tape 10 having a width of 8 mm can be traverse-wound in multiple stages, and a package of the carrier tape 10 can be obtained.

According to the above, by alternately wrapping a plurality of overlapping circumferential rows 22 and overlapping circumferential rows 23, the alternating overlapping steps 20 exhibiting an anti-slip function are formed, and the cumulative height deviation is suppressed. The winding posture of the carrier tape 10 can be stabilized. In particular, the winding posture of the carrier tape 10 having a width of 24 mm or less as shown in FIG. 2 can be significantly stabilized.

In addition, due to the sliding properties and thickness of the material of the carrier tape 10, the accumulation of overlap between the flanges 12 and 12A, and the tension at the time of winding, the overlapping portion of the flanges 12 and 12A may slip and the pitch at the time of winding may be incorrect. This can eliminate the risk of stability. For example, even when the carrier tape 10 is made of slippery polyethylene terephthalate resin, it is possible to prevent the overlapping portions of the flanges 12 and 12A from slipping and making the pitch unstable during winding.

In addition, even if the thickness of the resin sheet 11 is 0.4 mm or more and the overlap margin of the flanges 12 and 12A is large, control becomes difficult at the stage when the plurality of overlapping circumferential rows 22 and overlapping circumferential rows 23 are wound up. This prevents these circumferential rows from sliding irregularly and causing roll collapse. Therefore, there is no need to normally wind the carrier tape 10 and wind it in multiple stages. Furthermore, since it is possible to prevent the carrier tape 10 from slipping, uncontrollable expansion of the pitch does not occur, and it is possible to prevent problems such as unintended overlapping in the next circumferential row. become.

Next, FIG. 4 shows a second embodiment of the present invention. In this case, the carrier tape 10 is wound around the core 2 of the take-up reel 1 in multiple stages by traverse winding, and the carrier tape 10 is wound in multiple stages. All the stages are formed into alternately overlapping stages 20.

It is preferable that the overlapping rows 21 and 21 are adjacent to each other with a slight gap between them, but they may also face each other and be in contact with each other. Further, the flanges 12 of the carrier tapes 10 in the overlapping circumferential row 22 preferably overlap and contact the flanges 12A of the carrier tapes 10 in the adjacent overlapping circumferential row 23, but they may also overlap and face each other without contacting. good.

In the above, when the carrier tape 10 is traverse-wound in multiple stages, as shown in FIG. Odd-numbered overlapping circumferential rows 23 and even-numbered overlapping circumferential rows 22 are formed adjacent to each other, and they form an overlapping row 21, and this operation is repeated up to the vicinity of the other end of the winding core 2 to form one stage. The eyes are formed in alternating overlapping steps 20.

After the first stage is formed into alternately overlapping stages 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, so that the overlapped stages of odd rows are wound. The row 23 and the even-numbered overlapping circumferential rows 22 are formed adjacent to each other, and the overlapping rows 21 are formed by these, and this operation is repeated until near one end of the winding core 2 to form the second row of alternately overlapping rows 20. Form. During these operations, the flange 12A of the carrier tape 10 in the overlapping circumferential row 22 overlaps and contacts the flange 12 of the carrier tape 10 in the adjacent overlapping circumferential row 23 from the outside (from the top in FIG. 4).

Once the second stage is formed into the alternating overlapping stages 20, the third odd numbered stages are formed into the same alternating overlapping stages 20 as the first stage, and the fourth even numbered stages are formed into the same alternating overlapping stages as the second stage. 20 and then repeating these steps, the carrier tape 10 can be traversed and wound in multiple stages to obtain a package of the carrier tape 10. The other parts are the same as those in the above embodiment, so the explanation will be omitted.

This embodiment can also be expected to have the same effects as the above embodiment, and since all the stages are formed into alternately overlapping stages 20, even if the carrier tape 10 has a width of 32 mm or more as shown in FIG. It is clear that the winding posture of the winding system can be significantly stabilized.

In the above embodiment, when winding the carrier tape 10 in multiple stages, either the odd-numbered stages or the even-numbered stages of the multi-stages are used as the alternately overlapping stages 20, but the invention is not limited thereto. For example, specific stages (for example, the first stage, the fifth stage, the tenth stage, etc.) may be the alternately overlapping stages 20, and the remaining stages may be the normal stages 24.

Examples of the carrier tape winding method according to the present invention will be described below along 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. Further, the carrier tape used was a type in which the width of the resin sheet was 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 punched sprocket holes was measured to be 0.8 mm. Further, when each pocket of the carrier tape was measured, the size was 3.1 mm in width x 2.5 mm in length x 1.4 mm in depth.

After preparing the take-up reel and carrier tape, wind the carrier tape while moving it from one end of the winding core of the take-up reel to the other end using an incoming wire guide roll so that the overlapping circumferential row and the overlapping circumferential row are adjacent to each other. At the same time, they formed overlapping rows, and this operation was repeated up to the vicinity of the other end of the winding core to form the first stage into alternately overlapping rows. During these operations, the sprocket flange of the carrier tape in the overlapping circumferential row was overlapped and brought into contact with the free flange of the carrier tape in the adjacent overlapping circumferential row from the outside.

After the first stage is formed into alternately overlapping rows, the moving direction of the carrier tape is reversed, and the carrier tape is wound while being moved from the other end of the winding core toward one end by an incoming wire guide roll to overlap the overlapping rows and the These rows were formed adjacent to each other to form overlapping rows, and this operation was repeated up to the vicinity of one end of the winding core to form a second row of alternating overlapping rows. During these operations, the free flange of the carrier tape in the overlapping circumferential row was overlapped and brought into contact with the sprocket flange of the carrier tape in the adjacent overlapping circumferential row from the outside.

The amount of movement of the incoming line guide roll was set to 5.0 mm or 8.1 mm in the alternate overlapping stage where the sprocket flange overlaps the free flange from the outside. On the other hand, the thickness was set to 7.5 mm or 8.1 mm for the alternately overlapped stages in which the free flange overlaps the sprocket flange from the outside. Further, during the above operation, a constant tension was applied to the carrier tape, and this tension was set to 40N.

After the carrier tape was traverse-wound in multiple stages on a take-up reel to obtain a carrier tape package, the appearance of the package was observed to evaluate its quality. Specifically, the carrier tape was visually observed, and the presence or absence of pocket fitting and the presence or absence of disordered winding were evaluated by marking them with ○× in Table 1. ○ indicates that there is no problem with the practicality of the package, and × indicates that there is a doubt about the practicality of the package.

[Comparative example 1]
Although it is basically the same as Example 1, the amount of movement of the incoming line 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, in the alternately overlapped stages where the free flange overlaps the sprocket flange from the outside, it was changed to only 8.1 mm.

After the carrier tape was traversed and wound in multiple stages on a take-up reel to obtain a carrier tape package, the appearance of the package was observed. Specifically, the carrier tape was visually observed, and Table 1 summarizes the presence or absence of pocket fitting and the presence or absence of disordered winding.

[Comparative example 2]
Although it is basically the same as in Example 1, the amount of movement of the incoming line guide roll was changed to only 5.0 mm in the alternate overlapping stage where the sprocket flange overlaps the free flange from the outside. Also, in the alternately overlapped stages where the free flange overlaps the sprocket flange from the outside, it was changed to only 8.1 mm.

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

〔evaluation〕
In the case of Example 1, since the pockets did not fit into the gaps in the carrier tape, there were no irregularities on the surface of the carrier tape, and no disordered winding was observed, and very good results were obtained.
On the other hand, in the case of Comparative Example 1, the bottom of the pocket fit into the gap between the carrier tapes, causing unevenness on the surface of the carrier tape, which raised questions about practical use. In addition, in the case of Comparative Example 2, the bottom of the pocket fit into the gap between the carrier tapes, resulting in unevenness on the surface of the carrier tape. In addition, slipping occurred randomly at the overlapping part of the flanges, and winding disorder was observed. This disordered winding has raised serious doubts in practical terms.

The carrier tape winding method and the carrier tape package according to the present invention are used in fields such as storing, storing, conveying, and transporting parts.

1 Take-up reel 2 Winding core 10 Carrier tape 11 Resin sheet 12 Flange (side part)
12A flange (side)
13 Sprocket holes 14 Pockets 20 Alternately overlapping stages 21 Overlapping rows 22 Overlapping circumferential rows 23 Overlapping circumferential rows 24 Normal stages 25 Normal circumferential rows

Claims (5)

A carrier tape winding method for winding a carrier tape in which a plurality of pockets are arranged on a band-shaped resin sheet, the method comprising:
The carrier tape is wound in multiple stages while moving in the width direction of the winding core of the take-up reel, and at least some of these winding stages are formed into alternating overlapping stages by arranging a plurality of overlapping rows. Each overlapping row of the alternating overlapping rows is formed by arranging an overlapping circumferential row and an overlapping circumferential row, and the side of the carrier tape in the overlapping circumferential row is connected to the side of the carrier tape in the adjacent overlapping circumferential row. A method for winding carrier tape, which is characterized by overlapping the carrier tape. Among the multiple winding stages, the remaining stages are formed into ordinary stages by arranging a plurality of ordinary circumferential rows, and the carrier tape in each ordinary circumferential row of this ordinary stage does not contact the carrier tape in the adjacent ordinary circumferential row. The method for winding a carrier tape according to claim 1. 3. The method for winding a carrier tape according to claim 2, wherein when winding the carrier tape in multiple stages, the winding is performed by alternately repeating alternately overlapping stages and normal stages. 2. The method for winding a carrier tape according to claim 1, wherein among the multiple stages of winding, all the stages are formed into alternately overlapping stages. A carrier tape package wound by the carrier tape winding method according to any one of claims 1 to 4.

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