Container for packaging and unwinding a coil of wire

Details Container for packaging and unwinding a coil of wire Container for packaging and unwinding a coil of wire

1994-10-17

1996-02-27

Foster, Jimmy G.

Special receptacle or package

For roll or reel

Folded blank

206408, 206409, 242171, 242172, B65D 8504

Patent

active

054941601

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to a container or box for packaging and unwinding a coil of wire.


BACKGROUND ART

In unwinding wires, such as soldering wires, from reels or coils there is the problem of unwinding uniformly and uninterruptedly and possibly without forming bumps and without applying undesirable twists to the wire, which would lead to defects or in any case to a reduction in the quality of the soldered joints. A cylindrical container, on which a hood with a wire guiding sheath is placed, has already been proposed for this purpose; in this container, a movable lid or disk is placed above the coil so that it can descend freely as the vertical thickness of the coil decreases; the disk or lid has a smaller diameter than the internal diameter of the container, so as to delimit, together with the inner wall of said container, a gap through which the wire, unwound from the coil passes.
With a container structured in this manner, turns of the wire often escape beyond the movable disk, and since the wire is highly flexible, produce overlaps and form tangles that force to stop the soldering operation that is in progress and entail considerable downtimes to eliminate them and resume soldering.


DISCLOSURE OF THE INVENTION

An object of the present invention is to provide a container or box based on a new concept which is suitable for eliminating the drawbacks described above.
Another object of the present invention is to provide a container or box that allows stacking of a plurality of boxes one on top of the other, so as to allow considerable savings in transport and storage space as well as easy handling.
Another object of the present invention is to provide a container or box that can be obtained from inexpensive materials and can be disposable.
These objects and others which will become apparent hereinafter are achieved by a container for packaging and unwinding a coil of wire, according to the invention, which comprises: a box-like body that has a polygonal plan, can be opened at the top and is meant to accommodate a coil of wire; and a coil covering panel that has a central circular opening and a contour that matches the plan shape of the box-like body, so that it can freely descend in the box-like body in contact with the coil as the height of said coil decreases as the wire is unwound from above through the central opening of the panel, in order to prevent the lifting of turns of wire between the peripheral region of the panel and the container and thus the accidental entanglement of turns.
Advantageously, the container is constituted by: a first panel made of punched cardboard, which can be folded so as to obtain a first box-like body with multiple closure flaps at its top, two of which have a through slit or slot; by a second panel made of punched cardboard which can be folded into a second box-like body that can be inserted in the first one and has two lateral flaps that are handle-shaped and can be inserted in a respective slit or slot of the first box-like body; and by a coil covering panel, also made of cardboard, so as to obtain a package which is solid and strong enough, can be easily carried by hand and can be quickly prepared for use simply upon opening it by overturning the top flaps.


BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described further hereinafter with reference to the accompanying drawings, wherein:
FIG. 1 is a perspective view of a container that is shaped like a parallelepiped with a square plan and two grip handles for handling it;
FIG. 2 is a perspective view, with parts shown in cross-section, of the container of FIG. 1;
FIG. 3 is an exploded and slightly reduced-scale view of the container of FIG. 2;
FIG. 4 is a plan view of a coil of wire with four winding "nodes";
FIG. 5 is a perspective view of an empty open cardboard container;
FIG. 6 is a view of the container of FIG. 5, in which a coil of wire has been inserted;
FIG. 7 is a view of the container of FIG. 6 with a coil covering panel;
FIG. 8 is a perspective view of the container of FIG

REFERENCES:
patent: 1640368 (1927-08-01), Obetz et al.
patent: 2579131 (1951-12-01), Tinsley
patent: 2713938 (1955-07-01), Snyder
patent: 3491876 (1970-01-01), Zecchin
patent: 4582198 (1986-04-01), Ditton
patent: 4869367 (1989-09-01), Kawasaki et al.
patent: 5105943 (1992-04-01), Lesko et al.
patent: 5277314 (1994-01-01), Cooper et al.

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