Valmet Corporation

Oy Wartsila Ab

Jarmo Malmi

Pauli Koutonen

Kauko Tomma

Jari Sinkko

Arto Leskinen

Seppo Saukkonen

Heikki Niskanen

The invention concerns a device in winding of a web. The device is composed of at least one loading and/or support unit ( ) in order to support the winding core and to load the roll. The loading and/or support unit ( ) comprises at least two rolls ( ), around which at least one belt ( ) has been fitted in the axial direction of the rolls ( ). The rolls ( ) in the loading and/or support unit ( ) have been coupled together by means of coupling members ( ) so that movements of the rolls ( ) in relation to one another are geometrically positively controlled.

Device in winding of a web

A method for winding a web onto a spool at least partially supported on a support roll in which the web passes through a nip formed between the support roll and a roll formed by the web winding on the spool. The roll being formed is loaded and/or supported by at least one loading/supporting unit which is/are displaced during initial winding stages in a direction substantially in a plane passing through a central axis of the support roll and a central axis of the roll being formed. Thereafter, the loading/supporting unit(s) is/are displaced in a direction substantially along a path parallel to a circumference of the roll being formed, and during final winding stages, the loading/supporting unit(s) is positioned to support the roll being formed from a bottom region thereof.

Method in winding of a web

Method and device in winding of a web

A method and apparatus for cutting a paper or paperboard web particularly in a winder comprising at least one support roll (2) on which a roll (1) being wound is rotated. A curved, tensioned cutting blade (6) is rotated about the support roll (2) into the nip between the support roll (2) and the roll (1), whereby the sharpened and optionally toothed edge (9) of the blade cuts the web (4) being wound onto the roll (1) at a desired point.

Method and assembly for cutting a web

In an arrangement for forming rolls from a running web, the web is slit in its longitudinal direction and wound into a plurality of rolls, all having the same rotation direction during winding. The arrangement comprises means providing a peripheral as well as a central roll support force acting on the rolls during winding. The arrangement is so dimensioned that, due to the increase of the roll diameter during winding, the ratio of the peripheral support force and the central support force of a roll undergoes a substantial change merely as a result of the geometrical construction features of the arrangement. In the final phase of the winding of a roll, the central support force of the roll is considerably higher than the peripheral support force of the roll.

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Jarvenpaa, Finland

Jarmo Malmi