Sheet feeding or delivering – Feeding – Separator and conveyor
Patent
1993-01-22
1995-01-03
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separator and conveyor
271107, 271 90, B65H 508
Patent
active
053779673
ABSTRACT:
By means of a lever mechanism a suction head periodically connectable to a vacuum source is moved along a closed orbit between a pick-up point and a delivery point. At the pick-up point the suction head grips the respectively uppermost product in a stack and brings it to the delivery point, at which the product is released. The drive shaft of the lever mechanism is driven by a drive device at a varying speed in such a manner that the suction head is moved along its movement path at a speed which is minimal in the region of the pick-up point during the carrying along of a product immediately after it has been gripped, and then increases. Faultless gripping of the printing products is thereby achieved and the next printing product is prevented from being carried off with it by the action of suction.
The drive device may be an intermediate or superimposition transmission unit which is driven at constant speed of rotation on by a drive motor and which for example is in the form of a rotating slider crank.
REFERENCES:
patent: 4127262 (1978-11-01), Eberle et al.
patent: 4589649 (1986-05-01), Prescher
patent: 4657236 (1987-04-01), Hirakawa et al.
patent: 5094439 (1992-03-01), Renner et al.
patent: 5127645 (1992-07-01), Torisawa
Ferag AG
Skaggs H. Grant
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