Apparatus for changing a stack in a sheet deliverer

Details Apparatus for changing a stack in a sheet deliverer Apparatus for changing a stack in a sheet deliverer

1991-07-08

1992-09-08

Look, Edward K.

Sheet-material associating

Associating or disassociating

Signature associating

270 39, 4147908, B65H 4100

Patent

active

051451590

ABSTRACT:
An apparatus changes a sheet stack 11, formed on a conveying element, in a sheet deliverer with continuous sheet supply. To divide the stack into a lower composite stack to be conveyed away and an upper smaller component stack, two pushers 17, 20 are provided, of which the first pusher 20 is an edge pusher having a cutting edge 22 which is directed at a perpendicular front edge 23 of the stack 11 and from which an air jet is delivered which lifts the stack corner, forming a gap for the introduction of the edge pusher 20. During the further advance of the edge pusher, the smaller stack is separated over its whole width from the rest of the stack, so that the second pusher 17, constructed as a surface pusher, can be inserted perpendicularly to the direction of advance of the edge pusher 20.

REFERENCES:
patent: 4162649 (1979-06-01), Thomton
patent: 4747591 (1988-05-01), Beyer
patent: 4750724 (1988-06-01), Herd
patent: 4765790 (1988-08-01), Bessemann
patent: 4778165 (1988-10-01), Buck
patent: 4842572 (1989-06-01), Roth
patent: 4842573 (1989-06-01), Peter
patent: 4878659 (1989-11-01), Besemann

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