Device for winding of fiber webs, especially of paper and board webs

A device for winding paper and board webs into partial web rolls, comprising:

• winding stations, and at least one winding roll mounted for rotation about an axis at the winding stations;
• a plurality of partial web rolls, each partial web roll engaging the at least one winding roll at nips;
• a plurality of partial webs extending to the plurality of partial web rolls via the nips between the at least one winding roll and the partial web rolls so as to form the partial web rolls as the at least one winding roll rotates;
• wherein each partial web roll engaged with a particular one of the at least one winding roll has a center about which the partial web roll is formed, and wherein a first plane is defined extending between the axis of the particular one of the at least one winding roll and the center about which the partial web roll is formed, the first plane defining a support angle with respect to a horizontal plane which extends through the axis of the particular one of the at least one winding roll;
• wherein the winding stations are supported on a floor such that the mass of the partial web rolls applies a gravitational force making up at least part of a nip load at the nips between the at least one winding roll and the partial web rolls as the partial web rolls are formed;
• and
• wherein each winding station has a linear transfer mechanism, the linear transfer mechanism being arranged to transfer the partial web roll centers linearly, such that the support angles of the nips of partial webs rolls on the at least one winding roll remain constant as the partial web rolls are wound.

A method for winding paper and board webs into partial web rolls, the method comprising the steps of:

• winding partial web rolls about centers in a winding station from partial webs;
• winding the partial webs via a nip between a winding roll and the partial web rolls on a winding station supported on a floor;
• loading the partial web rolls at the nip against the winding roll at least in part with a force caused by a mass formed by the partial web rolls;
• and
• moving linearly the partial web rolls at a selected support angle in relation to the winding roll as the partial web rolls increase in size.

A device for winding paper and board webs into partial web rolls, comprising:

• winding stations;
• at least one winding roll mounted for rotation about an axis;
• wherein partial web paths are defined extending about the at least one winding roll to wrap a plurality of partial web rolls via nips defined between the at least one winding roll and the partial web rolls so that the partial web rolls can be wound as the at least one winding roll rotates, each partial web roll having a center about which the partial web roll is formed;
• wherein the winding stations are arranged to wind the partial web rolls about the partial web roll centers, and wherein at each winding station a first plane is defined extending between the at least one winding roll axis and one of the plurality of partial web roll centers, the first plane defining a support angle with respect to a horizontal plane which extends through the axis of said at least one winding roll axis;
• wherein the winding stations are supported on a floor such that the mass of the partial web rolls will apply gravitational forces to make up at least part of a nip load of a nip between the at least one winding roll and the partial web rolls being formed;
• and
• wherein the winding stations have a mechanism on the winding stations arranged to transfer partial web roll centers linearly such that the support angles of the partial webs rolls on the at least one winding roll remain constant as partial webs rolls are wound on the at least one winding roll.