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Apparatus and method for edge notching a continuously moving web

  • US 5,062,331 A
  • Filed: 08/07/1989
  • Issued: 11/05/1991
  • Est. Priority Date: 08/07/1989
  • Status: Expired due to Fees
First Claim
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1. Apparatus for edge notching a moving web, comprising:

  • first means for supporting such web to provide a substantially straight run of such moving web;

    at least one die means having an opening for at least partially defining the geometry of a notch to be made in such moving web;

    at least one cylindrical punch means having a shape and a shearing edge for cooperating with said opening to form such notch;

    second means for supporting said die means and said punch means on opposite sides of such moving web;

    means for rotating said second supporting means about an axis substantially perpendicular to the plane of such straight run so that said punch means and said die means move in substantially parallel planes on said opposite sides; and

    means for driving said shearing edge of said punch means through such moving web and said die means at least once during each revolution to form such notch and for withdrawing said shearing edge of said punch means after formation of such notch, said punch means comprising a first radially extending slot through which an edge portion of such moving web passes prior to actuation of said means for driving, said shearing edge being formed by said first slot, and a second radially extending slot, spaced axially on said punch means from said first slot, through which an edge portion of such moving web passes after actuation of said means for driving.

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