Apparatus for changing film reels

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 11/02 (2006.01) B65H 19/12 (2006.01)

Patent

CA 2669598

An apparatus comprises a reel-holding unit (22) for a wrapping machine (20) for wrapping a product (100) with a film (40) unwound by a plurality of rollers (25, 26, 27, 28, 29) from said reel (10) and a reel-changing unit (2, 2" ) for replacing a finished reel (110) with a new reel (10'), said reel-holding unit (22) and said reel-changing unit (2, 2') being mutually positionable in a reel-change configuration (A) in such a manner that said new reel (10' ) can be positioned instead of said finished reel (110), said reel- changing unit (2, 2') being provided with elements (4; 4') that define a curvilinear path (P) for an initial portion (41) of said film (40) of said new reel (10'), said elements (4; 4') being positionable in said reel-change configuration (A) such that when a roller of said plurality of rollers (25, 26, 27, 28, 29) is positioned at a curve (Pl, P2, P3, P4), at least one of said elements (4; 4') is completely interposed between said film (40) and said roller.

L'invention concerne un appareil comprenant une unité de retenue de bobine (22) pour une machine d'emballage (20) permettant d'emballer un produit (100) à l'aide d'un film (40) déroulé par une pluralité de rouleaux (25, 26, 27, 28, 29) à partir de ladite bobine (10) et une unité de changement de bobine (2, 2') permettant de remplacer une bobine finie (110) par une nouvelle bobine (10'), ladite unité de retenue de bobine (22) et ladite unité de changement de bobine (2, 2') étant mutuellement positionnables dans une configuration de changement de bobine (A) d'une telle manière que ladite nouvelle bobine (10') peut être positionnée à la place de ladite bobine finie (110), ladite unité de changement de bobine (2, 2') présentant des éléments (4; 4') qui définissent un chemin curviligne (P) pour une partie initiale (41) dudit film (40) de ladite nouvelle bobine (10'), lesdits éléments (4; 4') étant positionnables dans ladite configuration de changement de bobine (A) de sorte que lorsqu'un rouleau de ladite pluralité de rouleaux (25, 26, 27, 28, 29) est positionné au niveau d'une courbe (P1, P2, P3, P4), au moins un desdits éléments (4; 4') est complètement intercalé entre ledit film (40) et ledit rouleau.

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