Winding – tensioning – or guiding – Convolute winding of material – With spool loading or coil removal
Patent
1998-11-05
2000-12-05
Nguyen, John Q.
Winding, tensioning, or guiding
Convolute winding of material
With spool loading or coil removal
2425333, B65H 1922
Patent
active
061555150
DESCRIPTION:
BRIEF SUMMARY
The invention pertains to a core-insertion device for a winding machine with at least one support or carrier drum for winding of web-like material to be wound, in particular paper or the like, with a means for feeding cores to a take5 up position running approximately parallel to the at least one support or carrier drum(s), with a displacement means for holding, in a detachable way, and displacing the core(s) from the take-up position to a winding position located at the surface of the at least one support or carrier drum(s).
A core-insertion device of this kind for winding machines is known from DE-B1-2,930,474. In this known device, the take-up position is located on the side of the first support drum, viewing in web-running direction, opposite the winding bed formed between two support drums. A receiving recess is provided there for the winding cores for the next winding process. The winding cores are held in a clamped manner in the receiving recess by means of a pivotable guide rail. As the winding cores are inserted in the receiving recess, they are guided past a doublesided adhesive tape dispenser, which applies this tape to the location of the winding cores which faces downward in the winding bed between the two support drums when the winding cores are set in place. The transfer of the winding cores from the take-up position into the winding position takes place by means of guide-bars arranged on both sides of the first support drum, said guide-bars pivot the entire receiving recess, together with winding cores and clamping guide rail, across the top apex of the first support drum until the receiving recess with new winding cores is located upside down over the winding bed. Then the clamping guide rail is raised from the winding cores and the winding cores are released such that the latters drop on the support drums. This dropping is disadvantageous, because changes of the position of the adhesive tape can occur, such that the latter does not come into contact in the desired winding position, with the arriving web end for the next winding process. It is possible for the adhesive tape to adhere to the second support drum in web-running direction, such that this defect must be corrected before winding can begin. On the other hand, it is also not possible to lay down new winding cores in the winding bed such that they are released from their clamped position in the receiving recess only when they have a contact with the support drum. First, the space requirement of the receiving recess is too large and in addition, there is a risk of constraining force, occurring namely, if the transfer position in the winding bed is not approached with sufficient accuracy due to different diameters of the winding cores, for example.
Starting from this point, it is an object of the invention to create a generic core-insertion device, which can be used in order to bring winding cores, by means of restricted guidance, into contact with the support drums in the winding bed before the cores are detached from the displacement means.
In order to solve this problem, a core-insertion device of the same generic class is proposed in accordance with claim 1 for which the displacement means comprises, firstly, an elongated core carrier having a pivot joint arranged above its center of mass and with core-holding means in its lower region, and secondly, an element which can be moved between the take-up position and the winding position for a free-swinging accommodation of the elongated core carrier at its pivot joint and for displacing the core carrier including at least one core from the take-up position to the winding position.
Due to the invention, it is possible merely to move the winding cores itself, but not its receiving recess, from the take-up position to the winding position on a predetermined path and at an unchanging angle with respect to the core axis, deeply into the winding bed, and then to release them there only when the winding cores have come into contact with the support drums.
A core-insertion device in accordan
REFERENCES:
patent: 4723724 (1988-02-01), Bradley
patent: 4726533 (1988-02-01), Dropczynski
patent: 4856725 (1989-08-01), Bradley
patent: 4909454 (1990-03-01), Welp et al.
patent: 4962897 (1990-10-01), Bradley
patent: 5000395 (1991-03-01), Welp et al.
Dorfel G. Walter
Treutner Jurgen
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