Winding – tensioning – or guiding – Unwinding – With attachment to preceding material
Reexamination Certificate
1999-11-16
2001-07-24
Nguyen, John Q. (Department: 3653)
Winding, tensioning, or guiding
Unwinding
With attachment to preceding material
C242S562100, C083S155000, C083S156000, C083S924000, C156S508000
Reexamination Certificate
active
06264132
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method and a device for grasping a part of an outer layer of a material on a supply roll.
DESCRIPTION OF THE PRIOR ART
A method, as well as a device, is known from DE 42 12 095 C1, by means of which a suction strip is placed on the outer layer of a supply roll. The outer layer is lifted by this suction strip and is transversely cut. The start of a web of material formed by means of this is subsequently lifted and moved away.
DE 195 40 689 C2 shows a work carriage for preparing a paper web tip for a flying paper web roll change.
SUMMARY OF THE INVENTION
The object of the present invention is based on providing a method for grasping an outer layer of a web of material from a supply roll, as well as providing a device for grasping the outer layer of a supply roll.
In accordance with the present invention, this object is attained by using a pair of draw-in devices, such as draw-in rollers that are driven together. These draw-in rollers are brought into contact with the outer layer of material on the supply roll and draw the outer layer off the supply roll. Once the outer layer of material has been drawn into the draw-in device, it can be moved in a pre-determined path away from the supply roll.
The advantages which can be obtained by means of the present invention reside in particular, in that no suction lifters must be employed, and that with the device no matching to the width of the supply roll is necessary. The device of the present invention is matched to a maximally possible width of a supply roll, so that any narrower supply roll can also be processed. Regarding air permeability, basically any material, for example paper or textiles, can be processed. The position of the start of the web of material is of no importance for further processing.
REFERENCES:
patent: 5169082 (1992-12-01), Da Silva et al.
patent: 5386751 (1995-02-01), Dylla et al.
patent: 5783029 (1998-07-01), Stettner et al
patent: 4212095 C1 (1993-08-01), None
patent: 19540689 A1 (1996-11-01), None
patent: 19540689 C2 (1997-11-01), None
patent: 0475886 A1 (1991-07-01), None
Menz Martin Günter
Mezger Franz Konrad
Stettner Gerd Erich
Jones Tullar & Cooper P.C.
Koenig & Bauer Aktiengesellschaft
Nguyen John Q.
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