Winding – tensioning – or guiding – Convolute winding of material – With cutting – perforating – or notching
Patent
1997-07-28
1998-09-29
Darling, John P.
Winding, tensioning, or guiding
Convolute winding of material
With cutting, perforating, or notching
2425231, 2425334, B65H 3504, B65H 1808
Patent
active
058136231
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is the US national phase of PCT application PCT/EP96/00371 filed 26 January 1996 with a claim to the priority of German application 195, 92 969.8 itself filed 30 January 1995.
FIELD OF THE INVENTION
The invention relates to an apparatus for applying webs, in particular highly sensitive plastic foils, in a winding machine, preferably a multiple winding machine, with a winding shaft pivotal into the winding position for holding winding sleeves, a cooperating contact roller, a transverse cutting system for transversely slitting the web, and an applicator system for wrapping and applying the incoming web in the region of the winding sleeves.
BACKGROUND OF THE INVENTION
In order surely to apply a new leading web end to an empty winding sleeve it is standard practice to apply a strip of glue or adhesive to the empty winding sleeve. This requires a separate operational step and furthermore with thin highly sensitive goods several layers of the web are ruined. Such unusable winding sleeves can be reused only with great difficulty as it is expensive to separate the cardboard, glue, and plastic from one another.
The present invention is based on the idea of wholly dispensing with glue or adhesive in applying a new leading web end of a web to be wound up.
OBJECT OF THE INVENTION
It is an thus an object of the invention to provide an apparatus of the above-described type by means of which the leading end of a stationary web slit transversely of its feed direction, preferably of a highly sensitive plastic foil, can be accurately laid without overlap or folds on an empty winding sleeve without the use of an adhesive.
SUMMARY OF THE INVENTION
This object is attained in that the applicator system has an applicator element pivotal about the longitudinal axis of the winding shaft for pressing the leading web end against the winding sleeves. With the means according to the invention even with very sensitive webs, such as for example the highly sensitive plastic foils used in photography, without the use of an adhesive a sure and perfect application of the leading web end on the winding sleeve is ensured.
In addition the applicator element has a connecting rod pivotal about the axis of the winding shaft, extending over the working width of the machine, and carrying spring-like pressure elements whose free ends preferably carry rotatable pressure rollers or the like. The pressure elements preferably formed as tongues or as springy holding plates are formed as support elements for the more or less closely juxtaposed pressure rollers or the like. By means of such construction of the pressure elements one obtains an applicator system that is independent of format since the pressure rollers are so close to each other that on a change in cut width no adjustment of the applicator system is necessary.
It is important to the invention that a pivoting mechanism is arranged on the ends of the connecting rod. The pivoting mechanism serving for centering and guiding has a slotted first ring disk connected via a lever with the connecting rod and a concentrically arranged slotted second ring disk pivotal relative to the first ring disk, the common disk centers coinciding in the applying position of the applicator system with the longitudinal axis of the winding shaft.
To drive the pivotal ring disk of the pivoting mechanism at least two spaced gears are provided meshing with a toothing on the periphery of the rotatable ring disk or with an intermediate disk fixed thereto and of which during the pivotal movement at least one is always in mesh with the toothing of the rotatable ring disk or of the intermediate disk. This ensures that in the case when one of the gears is in the region of the slot of the rotatable disk, the other gear remains in driving mesh so as to guarantee a constant and uninterrupted pivoting of the applicator system.
In addition the applicator system is preferably constructed such that on pivoting in of the applicator system shortly before transversely
REFERENCES:
patent: 3482793 (1969-12-01), Mainstone
patent: 3501104 (1970-03-01), Hellemans
patent: 3782650 (1974-01-01), Donnell, Jr.
patent: 3908924 (1975-09-01), Schulze
patent: 4058267 (1977-11-01), Schuttler
patent: 4171780 (1979-10-01), Bugnone
patent: 4678133 (1987-07-01), Suzuki
Duppengiesser Dieter
Hutzenlaub Armin
Darling John P.
Dubno Herbert
Kampf GmbH & Co. Maschinenfabrik
Wilford Andrew
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