Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1992-04-28
1993-12-07
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
24012951, B65H 7500, B65H 54553
Patent
active
052677028
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for winding and unwinding cables onto a cable drum, the device including a portal-like supporting frame which is provided with two bracket arms that are suspended from a transverse crossbar and are adjustable in their distance from one another. Each arm includes a stationary arm portion and at least one arm portion that can be moved longitudinally in the manner of a telescope and by way of a lifting drive from a lower receiving position into an upper winding position. A rotatably mounted spindle pin arranged to receive the cable drum and oriented toward the other bracket arm is disposed at the free end of each longitudinally movable arm portion.
A device of the above described type is disclosed in U.S. Pat. No. 3,687,385. The advantage of this known winding device is that the bracket arms are always able to accommodate cable drums of any desired size within certain diameter ranges starting from a predetermined winding position defined by the shortest arm length. The drawback of the prior art device is that the bracket arms, except for their telescope-like longitudinal mobility and the spindle pins, are of a rigid construction so that cable drum and winding device must be accurately aligned with one another in order to be able to introduce the spindle pins into the central bores of the cable drum to pick up the drum. Positioning devices conceivable for large cable drums offer no solution, particularly if, for example, in connection with heavy cable drums made of wood, the lateral delimiting discs are offset relative to one another after repeated use and the lateral openings at the cable drum itself are no longer flush with one another.
German Unexamined Published Patent Application DE-OS 2,713,866 discloses a winding device for cables in which a support provided at each one of two vertical lateral supports is guided so as to move up and down and wherein the spindle pins are suspended in the support in a pendulum fashion, with each support being provided with its separate drive with the aid of which the spindle pin is raised by a small amount and is thus arrested with respect to its pendulum movement. The supports are then raised as a whole by their drives to the predetermined winding position. The prior art device is very expensive and requires additional controls for the actuation of the individual functions.
SUMMARY OF THE INVENTION
It is now an object of the invention to improve a device for winding and unwinding cables of the above-mentioned type so that it is possible without additional drive means to accommodate cable drums in which the lateral openings are not exactly flush.
This is accomplished according to the invention in that at least a portion of each bracket arm is resiliently supported, in the unloaded state, independently of the lifting drive so as to be movable back and forth within limits in its longitudinal direction relative to the supporting frame; each spindle pin is movable back and forth within limits transversely to the longitudinal direction of the associated bracket arm; and locking means are provided to arrest the longitudinal movement at the bracket arm and the transverse movement of the spindle pin in the winding position. If a cable drum is disposed between the two bracket arms which have been moved apart with respect to their spacing from one another and have been extended in the manner of a telescope into the lower receiving position, then movement of the bracket arms toward one another to the distance between the spindle pins as predetermined by the width of the cable drum, enables the spindle pin on each side to automatically thread itself into the associated receiving opening in the cable drum. The free upward and downward mobility of the bracket arms in the longitudinal direction, on the one hand, and the possible movement of the spindle pins transversely thereto, on the other hand, here ensure, in connection with the conically tapered spindle pin, the necessary transverse mobilities. As soon as the spindle
REFERENCES:
patent: 2490685 (1949-12-01), Greene
patent: 3687385 (1972-08-01), Skalleberg
patent: 4098468 (1978-07-01), Skalleberg
patent: 4209140 (1980-06-01), Seibert
patent: 4679743 (1987-07-01), Dallmaier
Klein Karl-Heinz
Schumacher Heinz J.
Jillions John M.
Stolberger Maschinenfabrik GmbH & Co. KG
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