METHOD IN WINDING A WEB

摘要

The invention concerns a method in winding of a web, wherein the web (W) is wound onto a spool (14) on support roll of a support roll (16) while passed throug h a nip (N) formed between the support roll (16) and the roll (15) that is being produce d. The spool (14) is supported at least partly. The spool (14) the roll (15) is sup ported and/or loaded by means of a device (20) whose position can be shifted. At the initi al stages of the winding, the loading/support unit/units (24) of said device (20) is/a re shifted substantially in the plane passing through the axes of the support roll (16) and of the roll (15) that is being produced so as to load and/or to support the roll (1 5) that is being produced in the winding position. When the winding makes progress, the loading/supporting unit/units (24) of the device (20) is/are shifted downwar ds substantially along a path parallel to the circumference of the roll (15), a nd at the final stages of the winding, the roll (15) that is being produced is supported by means of said unit (24) from underneath. The invention also concerns a device in wind ing of a web for carrying out the method. The device (20) is fitted to be used when a web (W) is wound onto a spool (14) on support of a roll (16) while passed through a nip (N) formed between the roll (16) and the roll (15) that is being produced, which spool (14) is supported at least partly by a support member placed in the centre of the spool (14). The device (20) comprises a unit (24) for supporting the spool (14) and for loading the roll (15). The unit (24) is fitted as a combined loading/supporting and surf ace-drive member. The device (20) comprises means for shifting the unit (24) substanti ally in the plane passing through the axes of the support roll (16) and the roll (15 ) that is being produced and substantially along a curved path parallel to the circumf erence of the roll (15).