Method and apparatus for cutting superposed webs
AssigneePaper Converting Machine Company
InventorLarry D. Wierschke
Life of this patent
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Abstract
A method of cutting an elongated multi-ply flat surfaced ribbon of web material which includes advancing the ribbon along a linear path while rotating a pair of cantilever-mounted drums on opposite sides of the path to flank the ribbon flat surfaces, the drums each having a plurality of axially extending slots in the periphery thereof. A saw blade is adjacent the path and orbits through the path so as to have the blade orbit intersect the drum slot orbits to transversely cut the ribbon while the saw is advancing parallel to the linear path.
Claims22
A method of cutting an elongated, multi-ply, flat-surfaced ribbon of web material comprising the steps of:
- advancing said ribbon along a linear path at a speed of advance,
- rotating a pair of cantilever-mounted drums on opposite sides of said path to flank said ribbon flat surfaces, each of said drums having a periphery and a plurality of axially-extending slots in the periphery thereof, said slots when said drums are rotated defining slot orbits,
- orbiting a saw blade adjacent said path, and
- cyclically intersecting the blade orbit with the slot orbits to transversely cut said ribbon into a series of products while advancing said saw blade parallel to said path.
Apparatus for cutting an elongated, multi-ply, flat-surfaced ribbon of web material comprising a frame defining a linear path, means on said frame for advancing said ribbon along said linear path, a pair of cantilever-mounted drums mounted on said frame on opposite sides of said path to flank said ribbon flat surfaces and having axes of rotation, each of said drums also having a periphery and a plurality of axially-extending slots in said periphery, means operably associated with said frame for rotating said drums so as to move said slots through orbits, a saw blade mounted on said frame adjacent said path, and means operably associated with said frame for orbiting said blade, said drum and blade orbits cyclically intersecting at said path to transversely cut said ribbon into a series of products while advancing said blade parallel to said path.
Dependencies are inferred from the claim text.