Winder roll starting apparatus with pressure device for thick webs
AssigneeMetso Paper, Inc.
InventorsCharles E. Haven, Jeffrey K. Klemens
Life of this patent
Estimating the term…
Abstract
A winder has a scraper mounted about the axis of a winder drum for circumferential movement. The scraper has a semi-cylindrical concave surface which extends in the cross machine direction, the concave surface meets a second surface to form a scraping edge. The scraping edge engages the winder drum, scraping a web from the surface of the winder drum and pressing the web into engagement with double-sided sticky tape on a winder core with the concave surface.
Claims11
An apparatus for attaching a fiber web tail to a winding core, the apparatus comprising:
- a winder drum having a cylindrical surface and an axis of rotation, wherein the direction in which the axis extends defines a cross machine direction;
- a winding core having a cylindrical surface of a selected length and a selected winding core radius, the winding core radius defining a winding core curvature, wherein the winding core is positioned so that the winding core cylindrical surface forms a first cross machine direction extending nip with the cylindrical surface of the winder drum;
- a cross machine direction extending scraping and pressing structure, the structure having portions forming a concave cross-machine-direction-extending surface thereon, the concave surface opening toward the winding core, and having a substantially similar curvature as the curvature of the winding core;
- a cross-machine-direction-extending scraping edge forming part of the scraping and pressing structure;
- and
- wherein the scraping and pressing structure is mounted for movement with respect to the winder drum, so that the scraping edge moves along the cylindrical surface of the winder drum, towards the winding core, to bring the concave surface into engagement with the cylindrical surface of the winding core.
A method for starting a reel about a winding core in a twin drum winder comprising the steps of:
- moving a cross machine direction extending concave surface closely matched to a curvature defined by the winding core, from a position above the twin drum winder to a position between a fibrous web start, and a cylindrical surface of a rear winding drum of the twin drum winder;
- moving the cross machine direction extending concave surface with respect to the cylindrical surface of a rear winding drum, so that a scraping edge of the cross machine direction extending concave surface, moves along the cylindrical surface of the rear winding drum, toward the winding core, and bring the concave surface into engagement with the cylindrical surface of the winding core so as to push the fibrous web start against the winding core positioned between the rear winding drum and a front winding drum of the twin drum winder;
- and
- mechanically pressing with the cross machine direction extending concave surface the web start against a sticky portion of the winding core to bond the web start to the winding core.
Dependencies are inferred from the claim text.