System for spacing a shingled stream of workpieces into a...

B - Operations – Transporting – 65 – H

Patent

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Details

201/130, 201/93

B65H 3/04 (2006.01) B65H 29/66 (2006.01) B65H 29/68 (2006.01) B65H 33/12 (2006.01)

Patent

CA 2030844

An apparatus for dividing a continuously conveyed stream of shingled workpieces, such as bags or sacks, into leading and trailing parts has two consecutive endless belt conveyors. The downstream second belt conveyor is driven, during a dividing operation, at a higher velocity than the first upstream conveyor in order to pull the shingled stream apart. After the stream has been divided into the leading and trailing parts the second conveyor is driven at the same velocity as the first conveyor. To provide separation of the stream into parts consisting of an exactly predetermined number of workpieces, an intermediate endless belt conveyor is provided, which extends parallel to the trailing portion of the second belt conveyor and during the dividing operation revolves at a lower velocity than the second belt conveyor. The intermediate conveyor is provided with cams for arresting the leading workpiece of the trailing part of the shingled stream, against an upper pressure belt.

Cette invention concerne une installation conçue pour diviser en tronçons séparés un flux continu de pièces chevauchantes, des sacs ou des poches, manutentionnées sur transporteurs continus. L'installation compte deux transporteurs à bande sans fin consécutifs, le transporteur aval étant entraîné, au cours de l'opération de division, à une vitesse plus grande que le transporteur amont pour séparer le flux en deux. Une fois le flux divisé en deux tronçons, le transporteur aval revient à la vitesse du transporteur amont. Pour réaliser une séparation en tronçons comptant exactement le même nombre de pièces, il est prévu un transporteur à bande sans fin intermédiaire qui est parallèle à l'extrémité arrière du transporteur aval et qui tourne, au cours de l'opération de division, à une vitesse plus petite que ce dernier. Le transporteur intermédiaire comporte des cames servant à bloquer la première pièce du second tronçon de pièces chevauchantes contre une bande supérieure de pression.

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