Slitting shingled sheets

Details Slitting shingled sheets Slitting shingled sheets

1991-09-20

1992-11-24

Watts, Douglas D.

Cutting

Processes

Including stacking of plural workpieces

831741, 83424, 834352, 83449, 83493, 83500, 83594, 493370, B26D 115

Patent

active

051653141

ABSTRACT:
A method and apparatus for longitudinally slitting a continuously moving shingle of sheets of corrugated paperboard includes a thin, circular rotary slitting blade cooperating with a lower roller assembly which supports the underside of the moving shingle and provides a firm surface to support the shingle against the upper rotating slitting blade. The roller assembly includes an annular circumferential slot in its outer surface through which an edge portion of the upper cutting blade travels with the shingle firmly supported by the roller surfaces on each side of the slot. In an embodiment of the invention for slitting a shingle of preformed knocked down boxes, the lateral edges of the advancing shingle are aligned and the shingle is held for movement into the slitting blade, resulting in extremely good registration and slit quality.

REFERENCES:
patent: 239235 (1881-03-01), Flohr
patent: 1210454 (1917-01-01), Gagne
patent: 1806458 (1931-05-01), Hayden
patent: 3386323 (1968-06-01), Dovey
patent: 3820289 (1974-06-01), Good
patent: 4669347 (1977-06-01), Worner

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