Contact assembly for accumulation conveyors

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 13/071 (2006.01) B65G 47/26 (2006.01)

Patent

CA 2336620

A contact assembly (50) for an accumulation conveyor (10) includes a support member (60) having a cavity (72) dimensioned to receive a force producing device (74). A contact member (50) is positioned between the force producing device (74) and the conveying rollers (25) and reciprocates with respect to the conveying rollers (25). The contact member (50) includes a platform (80) which supports a pair of cantilevered contact rollers (84, 84', 86, 86') journaled at opposing ends of the platform (80). When the platform (80) is vertically reciprocated by the force-producing device (74), the contact rollers (84, 84', 86, 86') in driving engagement with a drive belt (30) are forced upward, placing the drive belt (30) into driving contact with the conveying rollers (25). The contact member (50) is rotatably connected to the support member (60) while the contact roller (84, 84', 86, 86') positioned first in the direction of travel of the drive belt is formed with a pair of flanges (85). Contact between the drive belt (30) and the flanges (85) rotates the contact member (50) to thereby maintain alignment of the contact rollers (84, 84', 86, 86') and the drive belt (30).

Selon cette invention, un ensemble de contacts (50) destiné à un convoyeur d'accumulation (10) comprend un support (60) comportant une cavité (72) aménagée pour accueillir un dispositif (74) de génération de force. Un élément de contact (50), disposé entre le dispositif (74) de génération de force et les rouleaux convoyeurs (25), fait des mouvements alternatifs par rapport audits rouleaux convoyeurs (25). L'élément de contact (50) comprend un plateau (80) qui soutient une paire de rouleaux de contact cantilever (84, 84', 86, 86') disposés aux extrémités opposées dudit plateau (80). Lorsque le plateau (80) subit un mouvement alternatif vertical sous l'effet du dispositif (74) de génération de force, les rouleaux de contact cantilever (84, 84', 86, 86') entraînés par une courroie d'entraînement (30) sont sollicités vers le haut, ce qui a pour effet de mettre la courroie d'entraînement (30) en contact d'entraînement avec les rouleaux convoyeurs (25). L'élément de contact (50) est relié de manière rotative au support (60), le rouleau de contact (84, 84', 86, 86'), placé en premier dans le sens de déplacement de la courroie d'entraînement, est formé avec une paire de collerettes (85). Le contact entre la courroie d'entraînement (30) et les collerettes (85) assure la rotation de l'élément de contact (50), ce qui permet de maintenir l'alignement des rouleaux de contact (84, 84', 86, 86') sur la courroie d'entraînement (30).

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