Apparatus and method for automatically positioning valve means

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 47/31 (2006.01) B41F 17/22 (2006.01)

Patent

CA 2120495

A continuous motion cylindrical can decorator is provided with mandrels (20) that receive undecorated cans and a deco chain (3a) that carries decorated cans through a curing oven. The mandrels are mounted along the periphery of a continuously rotating carrier (18). Chain speed is much slower than linear mandrel speed and spacing between pins (29A, 29B) on the chain is much less than spacing between mandrels. Interposed between the chain and the mandrel carrier is a continuously rotating transfer carrier (27) having a plurality of suction holding devices (36) thereto. As the holding devices move through a transfer region they receive cans from the mandrels. In the transfer region mandrel linear speed is substantially greater than linear speed of the holding devices, and spacing between the latter is much less than spacing between the mandrels. Valving that controls application of pressurized air to unload the mandrels is positioned by a servo.

Installation à mouvement continu pour décorer des boîtes métalliques de forme cylindrique; l'installation en question comporte des mandrins (20) qui reçoivent les boîtes métalliques non décorées et une chaîne (3a) servant à acheminer les boîtes décorées à travers un four de cuisson. Les mandrins sont montés à la périphérie d'un porte-mandrins à rotation continue (18). La vitesse de défilement de la chaîne est beaucoup plus lente que la vitesse linéaire des mandrins, et l'espacement entre les axes (29A et 29B) de la chaîne est inférieur à l'espacement entre les mandrins. Un transporteur à mouvement rotatif continu (27) est interposé entre la chaîne et le porte-mandrins; le transporteur comporte une pluralité de supports de retenue à succion (36). Les supports de retenue reçoivent les boîtes métalliques des mandrins au cours de leur déplacement à travers une zone de transfert. € l'intérieur de la zone de transfert, la vitesse linéaire des mandrins est significativement plus grande que la vitesse linéaire des supports de retenue, et l'espacement entre ceux-ci est beaucoup moindre que l'espacement entre les mandrins. Une robinetterie à servocommande contrôle la distribution de l'air comprimé utilisé pour le déchargement des mandrins.

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