Front air knife top vacuum corrugation feeder

Details Front air knife top vacuum corrugation feeder Front air knife top vacuum corrugation feeder

G - Physics

03

G

270/162

G03G 17/00 (2006.01) B65H 3/12 (2006.01) B65H 3/14 (2006.01)

Patent

CA 1282806

ABSTRACT OF THE DISCLOSURE A top vacuum corrugation feeder employs a vacuum feedhead working in conjunction with an air knife to feed sheets from the top of a stack. The air knife includes fluffer jets and vectored auxiliary fluffer jets in order to assist in separating and feeding downcurled sheets. To improve sheet acquisition, increase reliability and decrease minimum feed speed, a vacuum plenum is preferably equipped with a negative pressure source that is on continuously during the feed cycle, with the only criteria for sheet feeding being that the rotation of the vacuum feedhead is closed prior to the trail edge of the acquired sheet exposing all of the vacuum ports.

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