Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product
Patent
1977-06-30
1979-03-13
Meister, J. M.
Cutting
With product handling means
Means to move, guide, or permit free fall or flight of product
83344, 83346, 83348, 83542, B23D 512
Patent
active
041435680
ABSTRACT:
Web cutting apparatus employs a rotary knife cylinder with elongated, radially outwardly projecting knife blade assemblies spaced around its periphery. A rotary anvil cylinder spaced parallel to the knife cylinder carries a corresponding peripheral array of elongated anvils. When the two cylinders rotate, the knife blades bear against the anvils at the nip between the two cylinders. The knife blade assemblies are flexible and resilient so that each blade edge is biased against its anvil at the instant of interference, with a local force sufficient to cut web. Further, the natural frequency of the knife assemblies is selected to be considerably higher than those of the other machine parts so that the spacing between the knife blades and the anvils at the nip is substantially unaffected by vibrations of those parts. Also the apparatus efficiently removes trim strips produced by the web cuts.
REFERENCES:
patent: 1185761 (1916-06-01), Bewsic
patent: 2870840 (1959-01-01), Kwitek
patent: 3056323 (1962-10-01), Kwitek
patent: 3555948 (1971-01-01), Olson
Butler-Automatic, Inc.
Meister J. M.
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