JP2891654B2 - Terminal structure of coil-shaped object - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil-shaped terminal structure in which an aluminum foil or the like is wound around a core.

[0002]

2. Description of the Related Art When winding a long object such as an aluminum foil around a core, the end of the long object is fixed and the winding is started. On the other hand, it is necessary to attach the coiled material obtained in this way to an automatic machine, etc., manufacture the product while rewinding it, and when it reaches the final terminal, it is necessary that the long terminal can be easily separated from the core. It is.

For this reason, as shown in FIGS. 10 and 11, the end portion 2a of the long object 2 is wound on the core 3 with a double-sided adhesive tape 1.
And perforations 4 and cuts 4a are provided slightly inward of the fixing portion, and when the wire is rewound and reaches the final terminal, it is cut from the perforations 4 or cuts 4a by applying tension. There is something like that.

[0004] However, there is a problem that none of them can be cut reliably or that the cutting line does not cross the long object 2 straight along the perforation 4 or the cut 4a.

Further, as shown in FIG. 12, the terminal portion 2a and the core 3 are connected by an adhesive tape 1a, and when rewinding and reaching the final terminal, the adhesive tape 1a is cut along a chain line 4b. There is also a method of separating the long object from the terminal core 2a from the winding core 3. However, when the remnants of the adhesive tape 1a adhered to the end 2a pass through the automatic machine, they may adhere to the inside of the mechanism and cause an accident. There was a problem.

[0006]

In order to solve the above problems, for example, Japanese Utility Model Publication No. 6-50449 discloses that an end of an aluminum foil is fixed diagonally to a core with an adhesive tape and one end of the adhesive tape is directly wound. It is disclosed to be attached to a core.

However, in this case, the core often does not have enough space for attaching one end of the adhesive tape, and even if it can be slightly attached to the end face of the core, the adhesive strength is weak and it is difficult to ensure. It is difficult to fix the terminal, and when it reaches the final terminal at the time of rewinding, there is a problem that the terminal is peeled off when tension is applied.

It is therefore an object of the present invention to make it possible to securely fix a terminal of a long object to a core, and to accurately cut only a long object at the last terminal of rewinding. .

[0009]

In order to solve the above-mentioned problems, according to the present invention, a terminal portion of a long object is fixed to a core in a range narrower than its width, and a fixing portion is provided inside the fixing portion. The width of the cut was as wide as or narrower than the width of the long object.

The cut may be a continuous cut or a discontinuous cut such as a perforation.

Further, even if the cut is straight,
The shape may be a refraction line or a curve.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the terminal 2a of the long object 2
And the core 3 are connected by a single-sided adhesive tape 5. A cut 6 is provided inside the terminal 2a.

As shown in FIG. 2, the width W1 of the portion fixed by the adhesive tape 5 is smaller than the width W of the long object 2, and the width W2 of the cut 6 is smaller than the width W of the long object 2. The width W1 of the fixing portion is equal to or larger than the width W1. That is,
W1 ≦ W2 <W.

As shown in FIG. 3, a fixed portion may be formed by attaching one surface of the double-sided adhesive tape 5 to the core 3 and the other surface to the long object 2. Also, the cut 6 can be bent in a V-shape. As shown in FIG. 4, two double-sided adhesive tapes 5 may be used for fixing. The shape of the cut 6 has a concave curve.

As shown in FIG. 5, the cut 6 may be a discontinuous cut such as a perforation. Alternatively, the double-sided adhesive tape 5 may be attached in an inverted C-shape to form a fixed portion. The fixing portion in FIG. 6 has a C shape, and the cut 6 has an inverted V shape. The cut in FIG. 7 has a convex curve shape.

3 to 7, the width W 2 of the cut 6, the width W of the long object 2, and the width W of the fixing portion
The relationship with 1 is as shown in FIG.

Now, the long object 2 is rewound to the end,
As shown in FIG. 8, when a tension T in the direction of the arrow is applied to the terminal portion 2 a fixed to the core 3, the tension T acts on the entire width W of the long object 2 up to the cut 6. But,
The width W1 of the fixing portion by the adhesive tape 5 is the width W of the cut 6
2, both sides W11, W12> Cut 6
The tension T applied to the width W of the long object 2 is divided over the entire width W2 of the cut 6,
In addition, since both sides W21 and W22 of the cut 6 are free ends (ends corresponding to the both sides W21 and W22 are not fixed to the core), a force is applied in a direction in which the cut 6 opens as shown in the figure. As a result, a tearing force is applied to both ends of the cut 6, and both side portions W21 and W22 are broken.

The width W1 of the portion fixed by the adhesive tape 5
The relationship between the width of the cut 6 and the width W2 of the cut 6 may be W2 ≧ W1, and the positional relationship between the fixing portion and the cut in the lateral direction may be as shown in FIG. 9, for example.

The long object may be any of a metal foil such as an aluminum foil, paper, and a synthetic resin film having good tearability.

[0021]

According to the present invention, as described above, the end of a long object can be directly fixed to the outer periphery of the core, so that the end of the long object can be fixed with sufficient strength at the time of winding the coil-shaped object. By simply providing a notch having a width larger than that of the terminal fixing portion, the terminal portion of the long object can be automatically and reliably cut by the tension and separated from the core.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a fixing portion of a long object and a cut;

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing another embodiment.

FIG. 5 is a perspective view showing still another embodiment.

FIG. 6 is a perspective view showing another embodiment.

FIG. 7 is a perspective view showing another embodiment.

FIG. 8 is a diagram for explaining the operation.

FIG. 9 is a diagram showing a positional relationship between a fixing portion and a cut;

FIG. 10 is a perspective view showing a conventional terminal structure.

FIG. 11 is a perspective view showing another example of a conventional terminal structure.

FIG. 12 is a perspective view showing another example of the conventional terminal structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Adhesive tape 2 Long object 2a Terminal part 3 Core 4 Perforation 4a Cut 5 Adhesive tape 6 Cut

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-100769 (JP, U) JP 6-14142 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 19/28

Claims (1)

(57) [Claims] 1. An end portion of a long object is fixed to a core in a range narrower than the width thereof, and the inner side of the fixed portion is wider than or wider than the fixed portion. Also in a narrow range,
A coil-shaped terminal structure in which a slit is provided in the lateral direction of a long object and the long object is wound around a core.