Vacuum sheet feeding apparatus including cylinder and upstanding

Sheet feeding or delivering – Feeding – Separator and conveyor

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Details

271 1003, 271107, 271108, 27126502, B65H 508

Patent

active

058332286

ABSTRACT:
A vacuum high-speed feeding apparatus equipped structure for moving suction nozzles attached to a cylindrical body towards sheet feeding rollers. The application of suction force is suspended upon detection that a drawn sheet has been caught and its conveyance has been stated by feeding rollers. This is done by detection of a leading edge of the sheet by a first sensor. The cylindrical body is restored to its home position when feeding of the sheet by a given distance is detected by a second sensor. The suction force is again applied when passage of the rear edge of the sheet through the feeding rollers is detected by the first sensor.

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patent: 4573673 (1986-03-01), Haug
patent: 4937622 (1990-06-01), Makiura
patent: 5028043 (1991-07-01), Karolyi
patent: 5213320 (1993-05-01), Hirota et al.

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