Change device of a reel-up and method for changing a roll
AssigneeMetso Paper, Inc.
InventorsPetri Enwald, Pauli Kytönen, Seppo Luomi
Life of this patent
Estimating the term…
Abstract
A change device of a reel-up in placed in the reel-up of a paper web in connection with the reel spool (2) forming the core of a new roll and located against the web (W) running onto the old roll (R). The change device comprises a guiding device (3) which is provided with nozzles or the like which are positioned and directed with respect to the reel spool (2) in such a way that they direct air jets (S) to the new end of the web following the cut-off point of the web (W) substantially over the full width of the web, to guide the web around the reel spool (2).
Claims22
A change device for a guiding a paper web from an old roll to a new roll in a continuously operating reel-up of a paper machine. said change device comprising:
- a reel spool functioning as a core for a new roll, said reel spool having a circumferential surface;
- a reeling cylinder structured and arranged to define a nip between said reeling cylinder and said reel spool and a cutting device structured and arranged to cut the web between said old roll and said nip;
- a guiding device arranged in connection with said reel spool, said guiding device comprising a plurality of nozzles structured and arranged to direct air jets substantially over the full width of a paper web winding onto said reel spool for guiding the web around said reel spool, and said guiding device being located opposite to the circumferential surface of the reel spool and facing a sector of the reel spool which is free from the web before the exchange.
A method for changing a roll in a continuous reel up of a paper machine comprising the steps of:
- placing a new reel spool having a circumferential surface in a change position to define a nip between a reeling cylinder and said new reel spool;
- cutting a web running onto an old roll after said nip;
- guiding a leading end of said cut web onto said new reel spool forming the core of a new roll;
- wherein said leading end of said cut web is guided onto said reel spool along a substantially full width of the web by means of jets of air acting opposite to the circumferential surface of the reel spool over a sector of the reel spool which is free from the web in the change position before the exchange.
Dependencies are inferred from the claim text.