Patent ID: 6829969
Filing Date: 2004-12-14
Classification: B65H,Y10T

Abstract:
Apparatus for processing sheet material, comprising: a take-up mechanism of sheet processing machinery, a feed table having a gate and upon which sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath, a drive transmitting arrangement driven by a servo-motor to advance the lowermost sheet beneath the gate to the take-up mechanism, a sensing means between the gate and the take-up mechanism to detect the passage of a datum position of the sheet, and a microprocessor which receives data indicating the position of the take-up mechanism and from the sensing means and which is programmed to control the servo-motor to ensure that the sheet presents itself to the take-up mechanism at the correct instant, such that, when the take-up mechanism commences to feed the sheet, the drive transmitting arrangement operates automatically in a freewheel mode while in engagement with the sheet, said apparatus further including restraining means for restraining feed of the next lowermost sheet by overrun of the freewheeling drive transmitting arrangement after the sheet being fed has cleared said drive-transmitting arrangement.