B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 45/09 (2006.01) B65H 23/02 (2006.01) B65H 45/22 (2006.01)
Patent
CA 2202463
The invention relates to a method and apparatus for guiding a thin web material (I) while folding the web material (1) over a triangular former (4). The apparatus includes two guide rolls (2, 3) over which the web material (I) is driven. The second guide roll (3) is secured to a baseline (5) of the triangular former (4). The triangnlar former (4) and the guide roll (3) may be tilted back and forth about a longitudinal axis (7) of a bearing axle (14) extending through a tip (8) of the triangular former (4). The longitudinal axis (7) is parallel with the web material (4) extending between the two guide rolls (2, 3). The position of the triangnlar former (4) is controlled by a non-contacting edge scanning member (12) that scans the position of the web material (1) on the guide roll (3) and causes the adjustment device (13) to tilt the guide roll (3) and the triangular former (4) to ensure that the edges of the folded web material are precisely aligned.
Procédé et appareil permettant de guider une bande de matériau (1) fin tout en pliant ladite bande de matériau (1) sur un manchon triangulaire. Ledit appareil comprend deux rouleaux de guidage (2, 3) sur lesquels est entraînée la bande de matériau (1). Le second rouleau de guidage (3) est fixé à une ligne de base (5) du manchon triangulaire (4). Le manchon triangulaire (4) et le rouleau de guidage (3) peuvent être inclinés vers l'arrière et vers l'avant autour d'un axe longitudinal (7) d'un essieu (14) de support s'étendant à travers une extrémité (8) dudit manchon triangulaire (4). L'axe longitudinal (7) est parallèle à la bande de matériau (1) s'étendant entre les deux rouleaux de guidage (2, 3). La position du manchon triangulaire (4) est commandée par un élément (12) d'exploration de bords sans contact qui explore la position de la bande de matériau (1) sur le rouleau de guidage (3) et pousse le dispositif de réglage (13) à incliner le rouleau de guidage (3) et le manchon triangulaire (4) pour faire en sorte que les bords de la bande de matériau plié soient alignés précisément.
Marks & Clerk
Tetra Laval Holdings & Finance S.a.
LandOfFree
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