Method of a Set Change in a Slitter-Winder and a Slitter-Winder Comprising a Set Change System

A slitter-winder comprising a set change system configured to perform a set change, and a winder configured to wind partial webs of a slitted fiber web to customer rolls in sets, which winder is a two-drum winder and comprises two winding drums, at least one of which is movable to adjust a distance between the two winding drums, and a rider roll unit movable in a vertical direction and configured to engage and give support to cores and customer rolls carried on the two winding drums, which set change system comprises:

• an adhesive application device configured to apply adhesive on surfaces of the partial webs to attach trailing ends of the partial webs onto surfaces of the customer rolls;
• a cutting device configured to cut the partial webs;
• a roll pusher configured to remove a set of completed customer rolls from the two winding drums of the winder;
• and
• a core placer configured to place new cores to be supported on the two winding drums for winding a next set of customer rolls, wherein the core placer is located above the winding drums and mechanically connected to the roll pusher, wherein simultaneously with the movement of the roll pusher back to its rest position, the rider roll unit is configured to be moved downwards towards its position at a beginning of the winding of the next set of customer rolls.

A slitter-winder configured to perform a set change comprising:

• a two-drum winder having two winding drums configured to wind partial webs of a slitted fiber web to a set of customer rolls, wherein at least one of the two winding drums is movable to adjust a distance between the two winding drums;
• a rider roll unit having a downwardly facing rider roll, wherein the rider roll unit is mounted above the two winding drums for movement in a vertical direction towards and away from the two winding drums, the rider roll unit being movable between a position where the rider roll engages and gives support to cores and customer rolls carried on the two winding drums and a position elevated above the two winding drums;
• an adhesive application device configured to apply adhesive on surfaces of the partial webs to attach trailing ends of the partial webs onto surfaces of the customer rolls of the set;
• a cutting device configured to cut the partial webs;
• a pivot arm pivotally mounted to an overhead beam positioned above the two winding rolls;
• a pivot element mounted to the pivot arm;
• a roll pusher mounted to the pivot element and configured for a pushion movement towards a set of customer rolls to engage and push against a completed set of customer rolls to remove the set of completed customer rolls from the two winding drums of the winder, and then after reaching a turning point to move in the opposite direction in a return movement;
• a core placer configured to place new cores to be supported on the two winding drums for winding a next set of customer rolls, wherein the core placer is located above the two winding drums and mechanically connected to the roll pusher and mounted to the pivot arm, wherein simultaneously with the movement of the roll pusher back to a rest position, the rider roll unit is configured to be moved downwards towards its position at a beginning of the winding of the next set of customer rolls in engagement with the customer roll set and as the core placer has lowered new cores down to the support of the two winding drums.