Apparatus for removing waste windows from web carton material

B - Operations – Transporting – 31 – B

Patent

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B31B 3/74 (2006.01) B26D 7/18 (2006.01) B31B 5/74 (2006.01) B31B 7/74 (2006.01) B31B 9/74 (2006.01) B31B 11/74 (2006.01) B31B 13/74 (2006.01) B31B 15/74 (2006.01) B31B 17/74 (2006.01)

Patent

CA 2205622

A method and apparatus are provided for removing waste die-cut windows from continuously moving carton board web material. A pair of juxtaposed parallel cylinders with their axes disposed transverse to the direction of web movement accept the moving web and knock-out the die-cut windows by virtue of a protuberance on one cylinder mating with a recess on the other, the protuberances and recesses matching each other and also matching the position of the die-cut window. In a variant, the non-male cylinder has an outer layer of substantially uniform thickness and is made of resilient polymeric material adapted to be elastically distorted sufficiently to receive the outward protrusion along with the waste window.

Méthode et appareil pour enlever des fenêtres découpées d'une bande de carton se déplaçant de façon continue. Une paire de cylindres parallèles juxtaposés dont l'axe est placé transversalement au sens d'avancement de la bande reçoivent la bande en déplacement et détachent les fenêtres découpées à l'aide d'une saillie sur un cylindre correspondant à un creux sur l'autre, les saillies et les creux s'adaptant l'un à l'autre et correspondant à la position de la fenêtre découpée.Dans une variante, le cylindre non mâle a une couche extérieure d'épaisseur substantiellement uniforme et est fait d'un matériau polymérique élastique adapté pour être déformé élastiquement suffisamment pour recevoir la saillie avec la fenêtre découpée.

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