Feedability sensor for a vacuum corrugated feeder with...

Details Feedability sensor for a vacuum corrugated feeder with... Feedability sensor for a vacuum corrugated feeder with...

B - Operations, Transporting

65

H

314/29

B65H 3/12 (2006.01) B65H 3/48 (2006.01) G03G 21/00 (2006.01)

Patent

CA 1240730

ABSTRACT A system for measuring the coefficient of friction between the bottom two sheets of the stack. The vacuum corrugation feeder tray is rigidly mounted and supports a stack of sheets resting at one end of the tray against a movable backstop. An air knife provides air pressure between the bottom sheet from the rest of the stack. The stack of sheets is forced up the tray by the backstop and allowed to slide back down the tray when the backstop is moved. The coefficient of friction between the stack and the bottom sheet is determined by the acceleration of the stack as it moves back down the tray. The coefficient of friction is then used to control the amount of air pressure from the air knife until an optimum coefficient of friction is achieved.

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