Signature transfer device in a folder for a rotary printing pres

Details Signature transfer device in a folder for a rotary printing pres Signature transfer device in a folder for a rotary printing pres

1982-05-10

1984-01-24

Heinz, A. J.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493424, B65H 4518, B65H 4516

Patent

active

044274050

ABSTRACT:
A signature transfer device in a folder for a rotary printing press includes a plurality of adjustable-pressure rollers for holding down upper tapes for transferring a signature with a strong force to prevent the upper tapes from slipping on the signature and hence, to prevent the latter from being inclined while the signature is being transferred toward a position in which the signature will be folded on itself by a chopper blade. The signature transfer device includes an adjustment mechanism for adjusting gaps between the upper tapes and the lower tapes to reduce the force with which the signature is sandwiched between the upper and lower tapes, so that the signature is prevented from being forcibly pressed against front lays in the folding position. With this arrangement, the signature is prevented from getting wrinkled upon abutment against the front lays, and from becoming inclined relative to the chopper blade when the signature approaches and arrives at the folding position. Therefore, desired perpendicularity of the signature relative to the chopper blade can be maintained during operation of the signature transfer device.

REFERENCES:
patent: 1933952 (1933-11-01), Zuckerman
patent: 1961000 (1934-05-01), Kleinschmit
patent: 4093206 (1978-06-01), Hartmann

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