Method for unwinding rolls of paper

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 16/06 (2006.01) B65H 75/18 (2006.01)

Patent

CA 2301832

A method of mounting narrower paper rolls for unwinding on a pair of stub chucks spaced for mounting and unwinding full width paper rolls and carried by arms of a pair of multiple reel stands includes providing a narrower paper roll wound on a tubular core assembly having a hollow cylindrical core member and an annular end member of metal or plastic within each opposite end portion of the core member. The end members are removed from the core member, and the core member is mounted at a desired longitudinal location on a full length shaft having opposite ends engageable with said stub chucks. Core member engaging devices are provided to enable the core member to be secured in said desired longitudinal location and to transmit rotational torque from the shaft to the core member. The full length shaft with the narrower paper roll thereon is then mounted on the stub chucks. A narrower paper roll can thus be mounted on multiple reel stands whose stub chucks are spaced for full width paper rolls without interrupting the unwinding operation of another paper roll mounted on the multiple reel stands.

La technique de montage de rouleaux de papier à dévider, ces rouleaux étant plus étroits que la normale, sur deux mandrins de remplacement écartés pour permettre le montage et le dévidement de rouleaux de papier pleine largeur soutenus par les bras de deux porte-bobines multiples, consiste à placer un rouleau de papier plus étroit enroulé sur un support tubulaire constitué d'un noyau cylindrique creux et d'éléments terminaux annulaires, en métal ou en matière plastique, placés à chaque extrémité du noyau. Les éléments terminaux s'enlèvent du noyau, ce qui permet de monter celui-ci à l'emplacement souhaité dans le sens de la longueur sur un arbre pleine longueur dont les extrémités opposées sont susceptibles de s'engager dans les mandrins de remplacement précités. Le dispositif comporte des mécanismes d'engagement de noyau qui permettent de fixer le noyau à l'emplacement souhaité ainsi que de transmettre un couple de rotation de l'arbre au noyau. Il est, de la sorte, possible de monter l'arbre pleine longueur, porteur du rouleau de papier plus étroit, sur les porte-bobines multiples dont les mandrins de remplacement ont été écartés aux dimensions des rouleaux de papier pleine largeur sans interrompre le processus de dévidement d'un autre rouleau de papier monté sur les porte-bobines multiples.

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