Winding – tensioning – or guiding – Convolute winding of material – With spool loading or coil removal
Patent
1995-05-02
1996-11-26
Jillions, John M.
Winding, tensioning, or guiding
Convolute winding of material
With spool loading or coil removal
242542, B65H 1930
Patent
active
055776841
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase of PCT/EP94/03288 filed 5 Oct. 1994 and based, in turn, on German national application P 43 34 029.6 filed 6 Oct. 1993 under the International Convention.
The invention relates to a winding machine with support cylinders for winding webs of material, particularly paper or cardboard webs, onto cores.
BACKGROUND OF THE INVENTION
In winding machines with support cylinders roll ejection devices and core insertion devices are known which during roll change eject the full rolls from the winding bed and introduce new cores into the winding bed.
From DE-OS 38 11 871 it is known to use as an ejection device an ejector beam provided with an ejection surface, swingable about the input support cylinder, which reaches up to the support cylinder and whose upper limit in its forward swung position extends into the region of the apex line of the output support cylinder. In this way fully-wound rolls with a small diameter can be clamped between the ejection surface of the ejector beam and the support cylinder over which they are supposed to be ejected and can be lifted from the winding bed by a rotation of this support cylinder.
DE-OS 40 03 504 describes a generic winding machine with support cylinders whose ejection device is an ejector roll, which is supported on lateral swingable swivel arms freely rotatable about the axis of the input support cylinder which deflects the web from underneath into the winding bed. Upstream of the input support cylinder a device for applying adhesive and a perforating device for weakening the web are arranged. At the moment of roll change, the web is first weakened and the weakened portion is moved into the winding bed. The severing of the web takes place subsequently by increasing the traction due to the rotation of the winding roll with the output support cylinder, while the ejector roll slightly lifts the winding roll from the input support cylinder. The fully-wound rolls are subsequently ejected by the ejector roll over the output support cylinder.
In order for the ejector roll to be capable of ejecting winding rolls with a larger diameter (e.g. 1000 mm) over the output support cylinder, it is necessary to arrange it at a certain radial distance from the input support cylinder. However then it is not in a position to lift winding rolls with a smaller diameter (e.g. 200 mm) from the input support cylinder for the cutting of the web.
OBJECT OF THE INVENTION
It is the object of the invention to improve the roll ejection device in a winding machine with support cylinders so that it is capable to lift winding rolls with a great variety of diameters from the input support cylinder for cutting, as well as to eject them from the winding bed over the output support cylinder.
SUMMARY OF THE INVENTION
This object is attained, in accordance with the invention in a winding machine with support cylinders for winding webs of material, particularly paper or cardboard webs, wherein two driven support cylinders form a winding bed between them and the material web is deflected by an input support cylinder from beneath into the winding bed. A device is provided for lifting a fully-wound roll from the input cylinder and for ejection of the fully wound roll from the winding bed. This device can comprise a rotatably supported roller which can swing about the input support cylinder in a direction of the winding bed. An ejector beam is swingable about the input support cylinder and has an ejection surface extending approximately radially of the input support cylinder and ending at a distance therefrom. The lifting roller is swung together with the ejector beam and is journaled to rotate in the same direction as the input support cylinder in a free space between the ejection surface and the input support cylinder. The lifting roller projects peripherally with respect to the ejection surface.
According to the invention, for the ejection of the fully-wound winding rolls from the winding bed an ejector beam with an ejection surf
REFERENCES:
patent: 4789109 (1988-12-01), Kyytsonen et al.
patent: 5222679 (1993-06-01), Dropczynski et al.
Dropczynski Hartmut
Kuhnhold Michael
Dubno Herbert
Jagenberg Papiertechnik GmbH
Jillions John M.
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