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US 4,041,813 AGranted
Method and apparatus for transverse cutting
AssigneePaper Converting Machine Company
InventorHarvey J. Spencer
Life of this patent
Estimating the term…
Abstract
A method and apparatus for the transverse cutting of elongated material such as superposed web plies (for example, a convolutely wound log) wherein the material is uniformly advanced along an axial path and a cutting disc blade is moved through an orbit in planetary fashion which intersects the path and is skewed relative thereto while the disc blade is rotating in planes perpendicular to the path.
Claims5
A method of cutting logs of convolutely wound web material, comprising:
- uniformly advancing a log along a path into a cutting station having an arm above said path,
- rotating said arm about an axis skewed with respect to said path, said arm having a disc blade mounted thereon with the blade axis spaced from the arm axis to cause said blade to intersect said path and cut a log, maintaining said blade axis at an angle skewed relative to said arm axis to position said disc blade continually perpendicular to said path whereby said disc blade makes a square cut through a log, and
- continuously planetarily rotating said disc blade about the blade axis from said arm axis.
A method of cutting logs of convolutely wound web material, comprising:
- uniformly advancing a log along a path into a cutting station having an arm above said path,
- rotating said arm about an axis skewed with respect to said path, said arm having a disc blade mounted thereon with the blade axis spaced from the arm axis to cause said blade to intersect said path and cut a log,
- maintaining said blade axis at an angle skewed relative to said arm axis to position said disc blade continually perpendicular to said path whereby said disc blade makes a square cut through a log,
- continuously rotating said disc blade about the blade axis from said arm axis, said arm being equipped with cylindrical stones for sharpening said disc blade, and rotating said stones continuously and selectively moving said stones into sharpening engagement with said disc blade when the same is out of cutting engagement with said log.
1 more element
Dependencies are inferred from the claim text.