Method and Device for Winding of Fiber Webs, Especially of Partial Paper and Board Webs
AssigneeMetso Paper, Inc.
InventorJarmo Malmi
Life of this patent
Estimating the term…
Abstract
Fiber webs are wound into partial web rolls (15) in a winding device having at least two winding stations (20) and rider roll units (30) that load a pair of rider rolls (31,32) against the partial web roll (15) being wound. The partial webs (W1, W2) are guided to be wound to partial web rolls (15) around cores (14) via a nip between a winding roll (10) and the partial web rolls (15). The winding position of the partial web rolls (15) is on the upper circumferential half of the winding roll (10). The rider rolls (31, 32) are moved substantially linearly in the direction of the radius of the partial web rolls (15) and co-linear with a movement path of winding chucks (25) on which the partial web rolls are supported at the two ends of a core (14).
Claims16
A method for winding partial paper or board webs into partial web rolls on a winding roll, which defines an upper circumferential half of the winding roll in winding stations of a winding device, the method comprising the steps of:
- winding a plurality of partial webs on to partial web rolls on the upper circumferential half of the winding roll in the winding stations;
- wherein during winding of the partial webs on to the partial web rolls, using a plurality of rider roll units each having a pair of rider rolls, each partial web roll is loaded by a pair of rider rolls of a rider roll unit;
- wherein each partial web roll has a roll center and is wound about a core or winding spool having two ends and is supported at the two ends by a pair of winding chucks or winding heads;
- guiding the partial webs to the partial web rolls and around the cores via nips between the winding roll and the partial web rolls;
- wherein the partial web rolls are loaded and supported by the rider rolls in a direction toward the center of the partial web rolls from initiating of the winding on the partial winding rolls until winding of the partial web rolls is completed at a selected diameter;
- moving the winding chucks along a liner movement path as the partial web rolls are wound from initiating of the winding of the partial webs until the partial web rolls are completed;
- and
- moving the rider rolls linearly in a direction of the radius of the partial web rolls and co-linear with the movement path of the winding chucks on which the partial web rolls are supported at the two ends of the core.
A device for winding partial paper and board webs into partial web rolls on to cores, the device comprising:
- at least one winding roll, the winding roll defining an upper circumferential half of said winding roll;
- at least two winding stations, wherein the winding stations are arranged to position partial web rolls on the at least one winding roll upper circumferential half;
- each winding station further comprising:
- a rider roll unit having a pair of rider rolls, the rider roll unit being mounted on a linear guide for linear movement in a direction of a partial web roll center as it engages with the at least one winding roll;
- a loading device connected to load the pair of rider rolls against a partial web roll in the direction of a partial web roll center as it engages with the at least one winding roll;
- wherein each winding station has a supporting structure having chucks arranged to support and load partial web rolls at the ends of cores about which the partial web rolls are formed, the supporting structure mounted to a carriage of the winding station on linear guides so that the chucks are movable along a linear movement path in the direction of a partial web roll center as it engages with the at least one winding roll;
- and
- wherein the rider rolls are movable linearly in the direction of a partial web roll center as the partial web roll center engages with the at least one winding roll and co-linear with the linear movement path of the winding chucks.
Dependencies are inferred from the claim text.