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Rotary die cutting machine having integral scrap stripper

  • US 4,305,716 A
  • Filed: 02/26/1980
  • Issued: 12/15/1981
  • Est. Priority Date: 02/26/1980
  • Status: Expired due to Term
First Claim
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1. In a rotary die cutting machine of the type having a rotatably mounted cylindrical die cutting roll including die means affixed to the outer surface of said roll, said die means including a plurality of circumferentially and longitudinally extending upstanding rule-like dies defining a pattern for cutting a sheet into a product portion and a scrap portion, the improvement in combination therewith comprising means associated with said die cutting roll for stripping the scrap portion from the product portion, said stripping means including:

  • a plurality of pin-like impaling members projecting outwardly from said roll, said pin-like members being positioned on said roll so as to pierce and hold said scrap portions to said roll, such that the product portion separates from the scrap portion as said roll rotates;

    means for ejecting said product portion from said roll;

    means for separating said scrap portion from said roll as said roll rotates, said separating means comprising a blade-like scrapping knife having an edge resting substantially against the outer surface of said roll, said knife edge being positioned to peel said scrap portion from said roll as said roll rotates; and

    means for preventing contact between said separating means and said dies.

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