Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1998-09-15
1999-09-21
Walsh, Donald P.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242601, 242608, 53399, B65H 7520
Patent
active
059542942
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to a method of manufacturing a coil of a continuous, flexible object, in particular hosing, flexible tubing, rope and the like, and enveloping the coil to form a parcel for delivery to a user of the object, said object being coiled onto an axially open core to produce said coil, said method comprising the steps of: between two parallel support rings of the tool and centered by a centering element in each support ring, whereby a rotatable unit is formed, coiling machine so that the object is wound to form said coil, and to surround the core from the inside thereof, and the coil enclosing the core, without engagement with the support rings, after which the straps are tightened and secured to form said parcel. The invention also relates to a core of a rotatable unit for manufacturing a coil of a continuous flexible object, in particular hosing, flexible tubing, rope or the like, and enveloping the coil to form a parcel for delivery to a user of the object.
Such hosing and flexible tubing used, for instance, for laying fibre optic cable, is delivered in rolls, known as coils, where small quantities are concerned. The roll is free from core and wrapping and is held together by a number of straps. At the application site the roll is placed on a special device to enable the hosing to be rolled off when the straps have been cut, or the roll is placed on the ground, the straps cut and the hosing pulled out, which is relatively inconvenient. This technique is therefore limited to deliveries of shorter lengths of hosing.
Conventional wooden drums are used for delivery of particularly longer lengths of hosing and flexible tubing, e.g. lengths of 500-2000 meter. Since these hosing and tubing products require a relatively large radius to allow bending, wooden drums must be chosen that have cores with a diameter of about 1 meter and more, referring to the inner cylindrical part. The size of the wooden drum will therefore be necessarily considerable, entailing high costs for manufacture and handling of the wooden drum. When the hosing or flexible tubing is delivered on wooden drums at the use site, the wooden drum is mounted on special equipment for unwinding and pulling out the hosing or tubing. The wooden drum is often skew and the hosing or tubing is thus pulled off jerky so that the work takes longer. Furthermore, the empty wooden drum must be returned to be used for a new delivery of hosing or tubing. This increases the total handling costs and the repeated use of the wooden drum, entailing wear and rough treatment, may contribute to it becoming skew.
SE-9101042-1 describes a special system for handling continuous, flexible objects such as hosing or flexible tubing, said handling commencing with the manufacture of a coil of cable or cord and enveloping the coil to form a parcel for delivery to a user. The coil is obtained by the object being wound onto an axially open, cylindrical sleeve. Before coiling is performed, the sleeve is provided with two flat, outer protective rings having concentric support surfaces cooperating with opposite internal or external surfaces of the sleeve depending on which form of protective rings are used. The sleeve is then fixed by a tool which has two parallel support rings with centering elements facing each other so that the sleeve is clamped between the support rings and centered by their centering elements so that a rotatable unit is formed. The object is then attached to said unit and the unit is brought to rotate in a coiling machine so that the object is wound to form a coil. The finished coil is surrounded by a protective covering, after which binding bands are passed through the sleeve to enclose the coil and the protective rings, and tightened to form said parcel. The support rings are removed from the finished parcel to be used for manufacturing further coils. The finished parcel is delivered as it is to a work place, where another tool is mounted on the parcel to prepare for unwinding the object. The secon
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Pham Minh-Chau
Ulvator AB
Walsh Donald P.
LandOfFree
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