Front air knife top vacuum corrugation feeder

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

1985-11-06

1987-01-13

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Separators

221211, 271 98, 271105, 414116, 414121, B65H 312

Patent

active

046359214

ABSTRACT:
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 motion of the vacuum feedhead is ceased prior to the trail edge of the acquired sheet exposing all of the vacuum ports.

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IBM Technical Disclosure Bulletin, vol. 6, No. 2, 1963, pp. 32-33.

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