Apparatus for high speed of stacking either sheets or forms as a

Details Apparatus for high speed of stacking either sheets or forms as a Apparatus for high speed of stacking either sheets or forms as a

1991-10-03

1993-07-27

Watts, Douglas D.

Severing by tearing or breaking

Breaking or tearing apparatus

Work-parting pullers

270 525, B26F 302, B65H 3510

Patent

active

052304531

ABSTRACT:
Apparatus for the high speed stacking of paper sheets of either a continuous web of an accordion-like folding formation of a continuous web or superimposed separated sheets. A drive brings the paper sheets to a tearing mechanism for tearing the sheets along a prepierced line. Properly spaced portions of either the continuous web or the leading edge of every sheet is diverted to a first or a second stop which can also include a folding station arranged on both opposed sides of a sheet stacking plane. The diverter includes, on each side of the sheets to be stacked, a plurality of compressed air blowing nozzles, connected with a compressed air source so that the continuous web portion or the leading edge of the individual sheets are directed to the predetermined stopping station, and folding station, if necessary. A tear separating device is provided which includes two parallel and superimposed rollers which includes a plurality of cylinders, of which at least the lower cylinders are provided with at least a planar or a bevelled portion, so that when the bevellings face each other, the web freely travels past the rollers and, when the rollers become engaged, the resilient material is prevented from travelling.

REFERENCES:
patent: 3741451 (1973-06-01), Parenti et al.
patent: 4131272 (1978-12-01), Hartnig
patent: 4397410 (1983-08-01), Schueler
patent: 4460350 (1984-07-01), Mittal et al.
patent: 4494948 (1985-01-01), Teyssier et al.
patent: 4577789 (1986-03-01), Hofmann et al.
patent: 4946086 (1990-08-01), Suuronen et al.
IBM Technical Disclosure Bulletin, vol. 16, No. 801, Jan. 1974, New York, N.Y., U.S.A., pp. 2629-2630.

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