JP4023768B2 - Winding method of carrier tape and package by the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a winding method effective for storing, storing, transporting a large number of various electronic components, etc., and performing a smoother operation of a carrier tape used in a surface mounter, and a package by using the winding method.
[0002]
[Prior art]
The carrier tape is defined by JIS standards such that a sprocket hole is provided in a flange portion on both sides when the tape width is 32 mm or more, and a flange portion on one side when the tape width is 24 mm or less. In the latter case, the flange portion on the side where the sprocket hole is provided (hereinafter referred to as the sprocket flange portion) has a width of 3 mm or more, but the flange portion on the side where the sprocket hole is not provided (hereinafter referred to as the free flange portion) The width may be about 0.75 to 1 mm.
A carrier tape having a narrow tape width is usually used by being traversed in multiple stages on a reel. That is, as shown in FIG. 5A, the carrier tape is wound around the reel while being laterally shifted to the right or left by the tape width, and the right and left of the moving direction is reversed near the side plate of the reel. As shown in FIG. 5 (b), the sprocket flange portion is first wound on the preceding carrier tape and wound up, and in the next stage, the free flange portion is wound on the preceding carrier tape and wound. In the vicinity of the side plate, it was performed by a method of winding while reversing the left and right of the moving direction.
[0003]
[Problems to be solved by the invention]
In the conventional method of winding up a carrier tape as shown in FIG. 5A, the carrier tape is usually wound around a half width in the upper and lower laps. However, the carrier tape wound up due to vibration or the like may move sideways, and the horizontal period of the carrier tape is the same at the upper and lower stages, so that electronic parts are not yet stored and a cover film is provided. In some carrier tapes, the recesses may get stuck.
In addition, even in a stored carrier tape, adjacent carrier tapes must be separated from each other by at least the width of the tape, so there is a gap between the wound carrier tapes, and the gap may be widened by vibration or the like. In some cases, the bottom of the concave portion of the carrier tape wound on the upper layer fits into the gap, thereby causing collapse.
[0004]
In addition, in the winding method as shown in FIG. 5B, the width of the free flange portion is narrow and easily displaced during winding, so that the flange portion can be continuously wound while accurately overlapping a predetermined amount at a predetermined interval. Is required to increase the winding torque and reduce the deviation and slippage of the carrier tape. Due to this strong winding torque, the carrier tape has a swell ridge as shown in FIG. As shown in b), warp wrinkles are likely to occur, and the position of the sprocket holes in the carrier tape will shift, and it will be necessary to feed the carrier tape for storing electronic components, attaching / detaching cover films, mounting electronic components, etc. There was a problem.
Therefore, an object of the present invention is to provide a method for reliably avoiding these events.
[0005]
[Means for Solving the Problems]
In the present invention, in order to avoid the above-described phenomenon, the concave portion for individually storing various electronic components has a flange portion provided with a sprocket hole on one side, and a plurality of concave portions are connected in the longitudinal direction via the connecting portion. When traversing the carrier tape on a reel, the winding of the carrier tape while moving the carrier tape in the horizontal direction while overlapping the flange part and the winding of winding without overlapping the flange part are repeated continuously. It is characterized by winding up. The overlapping flange portion is preferably the flange portion on the side where the sprocket holes are provided. Further, the present invention is a carrier tape wrapping body using the above-described winding method and wound around in such a manner that a turn in which the flange portion overlaps the reel and a turn in which the flange portion does not overlap are alternately arranged.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the details of the present invention will be described with reference to FIGS.
FIG. 1 is a partially enlarged perspective view of a carrier tape to which the present invention is applied, and FIGS. 2 and 3 are schematic views showing a state in which the carrier tape is wound around a reel by the method of the present invention. ) Is the first stage of the first embodiment, FIG. 2B is the second stage, FIG. 3A is the first stage of the second embodiment, and FIG. 3B is the second stage. Showing eyes. FIG. 4 is a partially enlarged explanatory view showing a state of the flange portion of the wound carrier tape.
As shown in FIG. 1, the carrier tape 1 is provided with a recess 2 for individually storing components, a sprocket flange portion 4 provided with a sprocket hole 3 and a free flange portion 5 provided on the periphery thereof, and connected. A large number of structures are continuously provided in the longitudinal direction via the portion 6.
[0007]
As shown in FIG. 2, when winding the carrier tape 1 around the reel 7, the carrier tape 1 of the present invention is wound before the reel 7 while the carrier tape 1 is wound around the reel 7 once. The in-line guide roll 8 is moved laterally by a certain width.
In this case, the period of the carrier tape 1 in the horizontal direction can be changed for each turn by changing the constant width for moving the incoming guide roll 8 in the horizontal direction for each turn.
In the present invention, the amount of movement of the incoming line guide roll 8 in the lateral direction is set to an amount that is the same as the width of the carrier tape 1 and an amount that the flange portion is substantially overlapped every alternate turn.
[0008]
For example, when the carrier tape 1 has a width of 8 mm, the sprocket flange portion 4 has a width of 3.1 mm, and the free flange portion 5 has a width of 0.8 mm, the reel 7 1 The incoming guide roll 8 for each rotation is set to a lateral movement width of 8.1 mm so that the free flange portion 5 is wound so as not to overlap the preceding carrier tape 1 (see FIG. 2A), and the reel 7 In the vicinity of the side plate 9, the left and right sides of the moving direction are reversed, and after reversing, the movement width in the lateral direction of the incoming guide roll 8 for each rotation of the reel 7 is set to 5.0 mm. The flange portion 4 is overlapped with the preceding carrier tape 1 by 3.0 mm and wound around the reel 7 (see FIG. 2B), and this is repeated for the required number of steps.
[0009]
As shown in FIGS. 3 (a) and 3 (b), it is possible to reverse the laps that overlap and the laps that do not overlap as shown in FIGS. 2 (a) and 2 (b). In short, when the carrier tape 1 is overlapped and wound, it is sufficient to overlap with the flange portion that can realize the overlap sufficiently reliably. Normally, when the sprocket flange portion 4 is on the preceding carrier tape side, The movement width in the horizontal direction of the incoming guide roll 8 for each rotation of the reel 7 is set small. Depending on the size of the recess 2, the width of the free flange portion 5 may have a sufficient width for overlapping, but in that case, it is of course possible to perform overlapping winding on the free flange portion 5 side. It is.
The tension applied to the carrier tape 1 during winding is managed by a tension controller (not shown), and the torque of the winding motor (not shown) is adjusted according to the winding diameter of the carrier tape on the reel 7. Therefore, it is preferable to always control the tension applied to the carrier tape 1 to be constant.
[0010]
By applying a certain tension, the overlapping portion of the carrier tape 1 can be ensured, and can not be loosened after winding.
The constant tension is preferably selected from the range of 300 to 400 g so that the carrier tape 1 does not wrinkle or warp when it is rewound.
As shown in FIG. 5, the above-described disadvantageous events such as lateral displacement of the obtained packaging body and interference between the recesses 2 can be prevented by overlapping and winding the sprocket flange portion 4 of the carrier tape 1. it can.
In addition, by winding the free flange portion 5 without overlapping, it is possible to set the torque at the time of winding low, and the tension applied to the carrier tape can be set to 300 to 400 g. Winding and warping of the wound carrier tape can be prevented.
[0011]
【Example】
Hereinafter, specific embodiments of the present invention will be described with reference to Examples and Comparative Examples.
[Example]
Carrier tape 1 containing electronic components, each recess having a width direction of 4.1 mm × longitudinal direction of 2.5 mm, a depth of 1.4 mm, a total width of 8 mm, and a sprocket flange portion width of 3.1 mm, has a width of 150 mm, It was wound around a reel 7 having a core diameter of 220 mm and an outer diameter of 420 mm of the side plate 9 of the reel.
The lateral movement amount of the inlet guide roll 8 is set to 5.0 mm and 8.1 mm, the sprocket flange portion 4 is overlapped by 3.0 mm, the free flange portion 5 is not overlapped, and the reel 7 is traversed, A package was obtained. Further, the tension applied to the carrier tape 1 during winding was kept constant at 380 g.
[0012]
Using the same carrier tape 1, the amount of lateral movement of the incoming guide roll 8 is set to 8.1 mm in all laps, and the carrier tape 1 is moved to the right or left by the same tape width at all stages. Compared with the package obtained by winding up the reel while shifting sideways and reversing the right and left of the moving direction near the side plate of the reel (the conventional method shown in FIG. 5A), the above implementation The package obtained in the example is not easily collapsed because there is no gap between the carrier tapes 1 for each step, and it is possible to wind up the carrier tape about 1.2 times as long as the winding density is high. did it.
[0013]
Also, a method of continuously winding the carrier tape while moving both the sprocket flange portion 4 and the free flange portion 5 in a lateral direction (the method shown in FIG. 5B, which is a conventional method. Incoming guide in this case) (The amount of movement of the roll 8 to the side is set to 5.0 mm and 7.25 mm), and the tension applied to the carrier tape must be set to 450 to 550 g to wind the free flange portion 5 accurately. There wasn't. When the carrier tape 1 was rewound from the reel 7, warp wrinkles were generated at 20 to 30 mm per 1 m length, and waviness wrinkles were also confirmed.
On the other hand, the carrier tape unwound from the reel of the packaging body obtained in the example of the present invention was caught in a warp wrinkle within 5 mm per 1 m in length, and no waviness was confirmed.
[0014]
【The invention's effect】
According to the present invention, there is no collapse during storage and transport of the obtained package, and the carrier tape that has been rewound does not warp or undulate, so the carrier tape feeding operation is performed very smoothly. .
[Brief description of the drawings]
FIG. 1 is a partially enlarged perspective view of a carrier tape to which the present invention is applied.
FIG. 2 is a schematic view showing a state where a carrier tape is wound around a reel by the method of the present invention;
FIG. 2 (a) shows the first stage of the first embodiment.
FIG. 2 (b) shows the second stage,
Respectively.
FIG. 3 is another schematic diagram showing a state in which the carrier tape is wound around a reel by the method of the present invention;
FIG. 3A shows the first stage of the second embodiment.
FIG. 3B shows the second stage.
FIG. 4 is a partially enlarged explanatory view showing a state of a flange portion of a wound carrier tape.
FIG. 5 is a partial enlarged explanatory view showing a state of a flange portion of a conventional wound carrier tape;
FIG. 5 (a) shows a case of a winding method in which carrier tapes do not overlap.
FIG.5 (b) shows the case of the winding method in which the flange parts on both sides of the recess overlap.
It is a partial expansion explanatory view shown respectively.
6 is a defect explanatory view showing a state after rewinding from the reel of the carrier tape,
Fig. 6 (a) shows a swell
6 (b) shows the warp
Each is shown.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Carrier tape 2 ... Concave part 3 ... Sprocket hole 4 ... Sprocket flange part 5 ... Free flange part 6 ... Connection part 7 ... Reel 8 ... Inlet guide roll 9 ... Side plate

Claims (3)

When the concave part for individually storing various electronic components has a flange part provided with a sprocket hole on one side, and a carrier tape formed by connecting many in the longitudinal direction via the connecting part is traversed around the reel, Winding of a carrier tape, wherein the winding is continuously wound while alternately repeating the winding of winding the carrier tape while moving the carrier tape in the lateral direction while overlapping the flange portions and the winding winding without overlapping the flange portions. How to take. The method for winding a carrier tape according to claim 1, wherein the overlapping flange portion is the flange portion on the side where the sprocket holes are provided. A package of carrier tape wound up so that there are alternating turns in which the flange portion overlaps with the reel and turns in which the flange portion does not overlap.

Images