JPH06227512A - Packing method for coreless coil - Google Patents

Abstract

PURPOSE:To provide a packing method for coreless coils by which breakage and movement of wires and entanglement thereof can be prevented. CONSTITUTION:This is a packing method for a coreless coil 1 which is made by disassembling and removing a reel frame, after wire materials or the like are once wound thereon. It is bundled, with a binding material 2 like steel bands immediately before the reel frame is disassembled and removed and after it is removed, the recession 3 of coil brought about by the bundling of the binding material 2 at the middle of the upper face of the coil is filled with a filler 4. After that, whole periphery is covered with a contractive film 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for wrapping a coreless coil obtained by winding a wire material such as a bare copper wire on a winding frame and then removing and removing the winding frame.

[0002]

2. Description of the Related Art FIG. 2 is a longitudinal sectional view of an example of a conventional coreless coil in a packaged state. In the drawings, 1 is a coreless coil, 2 is a binding material such as a steel band, 3 is a recess formed in the center of the upper end surface of the coil 1 by the binding material 2, and 5 is a shrink film that covers the entire circumference of the coreless coil 1.

In the packaging of the coreless coil 1 as described above, after the wire or the like is once wound on the winding frame, and immediately before the winding frame is disassembled and removed, the binding material 2 such as a steel band or the like is provided so that the wire or the like does not come apart.
Bind with and disassemble and remove the bobbin. Then, in the next step, when the wire is unwound one by one and used, the shrinkable film 5 covers the entire circumference of the coreless coil 1 in order to prevent the wire from falling off, shifting, and moving.

[0004]

As described above, the packaging of the coreless coil is bound with the binding material 2 such as a steel band so that the wire or the like does not come apart immediately before disassembling and removing the winding frame. At this time, the binding force of the binding material 2 causes a recess 3 in the center of the upper end surface of the coreless coil 1. On the other hand, the shrink film 5 covers the entire circumference of the coil in order to prevent the wire rod from being displaced or moved, but since the wire rod and the shrink film 5 do not come into contact with each other in the recessed portion 3, when the steel sheet is used in the next step, After cutting the binding material 2 such as the band, there is a problem that the line easily breaks or moves and cannot be unraveled one by one, resulting in entanglement. Moreover, if the entanglement occurs, a loss such as a recovery time occurs in the next process, and the productivity decreases.

[0005]

SUMMARY OF THE INVENTION The present invention provides a method for packaging a coreless coil which solves the above-mentioned problems, prevents line collapse and movement, and eliminates the occurrence of entanglement. After the frame is disassembled and removed, the hollow portion of the coil formed by binding the binding material is filled in the center of the upper end surface of the coil with the filling material, and then the entire circumference is covered with the shrink film.

[0006]

When the coreless coil packaged by the above method is used, the binding material such as a steel band is cut to release the binding, but without the filling material, the hollow portion does not contact anything. Line breakage and movement easily occur, but this can be prevented because of the filler.

[0007]

1 is a vertical sectional view of a specific example of a coreless coil packaged by the method of the present invention. In the drawings, FIG.
The same reference numerals represent the same parts. As shown in the drawing, before the winding frame is disassembled and removed as in the conventional case, it is bound with a binding material 2 such as a steel band. And after disassembling and removing the reel,
The hollow portion 3 of the coil formed by binding the binding material 2 is filled with the filling material 4 at the center of the upper end surface of the coil 1. Then, the shrink film 5 covers the entire circumference and is wrapped. As the filling material 4, it is preferable to use a material that is welded to the shrink film 5 by heat or a material having a buffering effect.

[0008]

[Experimental example] Approximately 1 ton of 1.38 mmφ annealed copper wire was wound into a coreless coil, and a circular polyethylene cushioning material with an outer diameter of 520 mmφ was used as a filling material at the center of the upper end surface of the coil so that the sides contact the wire material. From the outside, the entire coil was covered with a shrink film and wrapped.

With respect to each of the thus-packaged coreless coil and the conventional packaged coreless coil of 1000 coils, the probability of occurrence of entanglement was evaluated when the coil was unwound one by one at a speed of 60 m / min. As a result, the conventional packaging coil was entangled in 28 coils, but no entanglement was observed in the coil of the present invention,
The effect of the packaging method of the present invention was confirmed.

[0010]

As described above, according to the method for packaging a coreless coil of the present invention, the wire rod is prevented from being collapsed or moved, and the occurrence of entanglement is eliminated. Therefore, there is no loss of recovery time in the next process, leading to improved productivity.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a specific example of a coreless coil packaged by the method of the present invention.

FIG. 2 is a vertical cross-sectional view of an example of a conventional coreless coil in a packaged state.

[Explanation of symbols]

 1 coreless coil 2 binding material 3 dent 4 filling material 5 shrink film

Claims (3)

[Claims] 1. A method of packaging a coreless coil, which is produced by winding a wire or the like around a winding frame and then disassembling and removing the winding frame by using a binding material such as a steel band immediately before disassembling and removing the winding frame. After tying up and disassembling and removing the bobbin, the center of the upper end surface of the coil is filled with a filling material for the hollow portion of the coil caused by binding of the binding material, and then the entire circumference is covered with a shrinkable film. Coreless coil packaging method. 2. The method for packaging a coreless coil according to claim 1, wherein the filling material is a material which is welded to the shrinkable film by heat. 3. The method for packaging a coreless coil according to claim 1, wherein the filler has a cushioning effect.