Downhill bottom vacuum corrugated feeder and method

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 5/00 (2006.01) B65H 3/12 (2006.01) B65H 3/48 (2006.01) B65H 7/20 (2006.01) B65H 9/04 (2006.01)

Patent

CA 2104272

A bottom vacuum corrugated feeder (BVCF) includes a tray for supporting a stack of documents. The tray is angled downhill relative to the feeding direction of the documents such that the leading edge of the stack is urged to a common stop member. The tray also includes a single side guide for aligning one side edge of the stack. A stack height sensor sends a signal corresponding to stack height to a controller which in turn controls voltage to be applied to a DC motor controlled blower based on a predetermined ratio of air flow pressure to stack pressure. The structure enables intermixed size document feeding in a BVCF.

Cette invention concerne un dispositif ondulé d'alimentation par le bas à dépression comprenant un plateau destiné à recevoir une pile de feuilles. Le plateau est incliné en pente descendante vers l'appareil à alimenter de sorte que le bord d'attaque de la pile soit en appui contre une butée ordinaire. Par ailleurs, le plateau ne comporte qu'un seul guide latéral assurant l'alignement latéral de la pile. Un détecteur de hauteur de pile envoie un signal représentant la hauteur détectée à une commande ayant pour fonction de régler la tension d'alimentation d'un moteur CC de soufflante en fonction d'un rapport pression d'air/poids de papier prédéterminé. Le dispositif objet de l'invention permet d'alimenter automatiquement l'appareil en feuilles de tailles diverses mélangées.

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