US 5,967,449 AGranted

Winder and method for the continuous winding of a material web

AssigneeVoith Sulzer Papiermaschinen GmbH

InventorsRoland Thomas, Ralf Preising, Roland Moeller

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Abstract

A winder for continuous winding of a material web, like a paper or board web, on a winding spool to form a wound reel. A contact pressure drum is rotatably supported on a displaceable transport device and the drum itself is displaceable with respect to the transport device to form a widening nip with the wound reel. The transport device also supports a primary bearing for holding an empty spool during the start of the winding process. The bearing for the empty spool is between the contact pressure drum and a secondary bearing for supporting the wound reel in the final winding position. The primary bearing for the initially empty spool is fixed in location on a transport device. The transport device is in turn transportable toward and away from the secondary bearing for the wound reel. The contact pressure drum is supported to move along with the transport device as well as also being displaceable with respect to the transport device to maintain the line pressure during increase in the wound spool diameter.

Claims32

Dependent claims

A winder for the continuous winding of a web of material for forming a wound reel on a spool, the winder comprising:

a primary bearing for supporting a spool on which a web is to be wounds the primary bearing being moveable;
a secondary bearing, the primary bearing being movable toward and away from the secondary bearing, and the secondary bearing also being adapted to support the spool;
a displaceable transport device having a first part on which the primary bearing is supported, the first part of the transport device being displaceable with respect to the secondary bearing, and having a second part which is movably coupled to the first part and which is displaceable with respect to the first part in a direction that is substantially parallel with a direction that the first part is displaceable;
a pressure applying device supported on and moveable with the second part of the transport device and positioned so as to engage and form a winding nip with the wound reel when the spool is supported on the primary bearing or on the secondary bearing, the pressure applying device having a circumferential portion over which the web is guided;
the primary bearing being arranged in a fixed location on and being moveable along with the first part of the transport device and at a location normally between the pressure applying device and the secondary bearing until the primary bearing is transported by the transport device up to the secondary bearing.

2 more elements

A method for winding a continuous material web onto a spool to form a wound reel, the method comprising the following steps:

guiding the material web over a partial circumferential region of a pressure applying device, holding the pressure applying device against the wound reel and guiding the material web through a winding nip formed between the pressure applying device and the wound reel;
moving the pressure applying device with respect to the wound reel to form a free draw of the material web between the circumferential region of the pressure applying device and the almost finished wound reel;
introducing an empty spool into the region of the free draw in a winding start position;
moving the pressure applying device to form a new winding nip between the pressure applying device and the empty spool;
severing the material web at a location before the wound reel;
winding the free end of the material onto the empty spool to form a new wound reel;
controlling/regulating the line force in the winding nip and thereby compensating for increasing wound reel diameter by displacing the pressure applying device with reference to the new wound reel;
transferring, using a single common transport device that carries the pressure applying device and the new wound reel, the new wound reel together with the pressure applying device that forms the new winding nip into a final winding position while the winding process proceeds;
and
finishing the winding of the new wound reel with continued control/regulation of the line force in the winding nip.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/012,956Filed 26 Jan 1998
Priority: DE 197 02 71525 Jan 1997
Granted: 19 Oct 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B65H 19/2207
In winding mechanisms or in connection with winding operations: the web roll being driven by a winding mechanism of the centre or core drive type
B65H 18/26
Web-winding mechanisms: mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
B65H 2301/31642
Involving at least two planes containing the roll axis: l-shaped
B65H 2301/41361
Mounting arrangements not otherwise provided for: sequentially used roll supports for the same web roll