Web winding method and apparatus
AssigneeOy Wartsila Ab
InventorPauli Kytonen
Life of this patent
Estimating the term…
Abstract
An arrangement for winding a web, in particular a paper web, onto a roll core or the like in a two-drum winder comprising a first and a second support drum and a rider roll surrounding said roll core, which is located in a web winding position. The arrangement comprises further a web cutter, means for the transfer of a finished roll to move the roll away from said support drums to a receiving device and supply means for the supply of a new roll core. The roll transfer and the new core supply are carried out before said web cutter disengages said finished roll from said web. Said web cutter is supported at a movable support member of said rider roll. The cutter is arranged to engage said web at a location between the web winding position and the finished roll, which is located in the receiving device.
Claims18
A method of winding a web onto a succession of take-up members, comprising:
- (a) locating a first take-up member in a web winding position defined between first and second support drums with a leading end of the web gripped between the take-up member and a rider member;
- (b) rotating the drums so as to rotate the take-up member and thereby cause the web to be wound onto the take-up member to form a roll thereon while the rider member remains in contact with the roll and, when the roll is finished, withdrawing the rider member from contact with the roll and transferring the roll away from the support drums to a receiving position;
- (c) after steb (b), supplying a new take-up member to the web winding position, bringing the rider member into a position in which the web is gripped in a nip defined between the rider member and the new take-up member, and severing the web from the finished roll at a location between the nip and the finished roll, so as to define a new leading end of the web, the new leading end of the web being gripped in the nip between the rider member and the new take-up member, and
- (d) repeating steps (b) and (c).
Apparatus for winding a web onto a roll take-up member, comprising first and second support drums defining a web winding position therebetween, a rider roll mounted to engage a roll being formed on the take-up member when positioned in the web winding position, a support member supporting the rider roll to permit movement thereof relative to the support drums, means defining a receiving position for a finished roll, means for transferring the finished roll from the web winding position to the receiving position, and means for supplying a new roll take-up member to the web winding position when the finished roll has been transferred from the web winding position, the support member being movable to bring the rider roll into a position in which it defines a nip with the new roll take-up member in the web winding position and the web is gripped between the rider roll and new roll take-up member, and the apparatus also comprising a cutter member that is stationary relative to the support member and is effective when the finished roll is in the receiving position and the rider roll is in the position in which it defines a nip with the new roll take-up member to contact the web at a location between the nip and the finished roll and sever the web at that location.
Dependencies are inferred from the claim text.