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Rotary notcher for a joined metallic strip

  • US 4,597,521 A
  • Filed: 02/20/1985
  • Issued: 07/01/1986
  • Est. Priority Date: 02/20/1985
  • Status: Expired due to Fees
First Claim
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1. An apparatus for shearing and removing a predetermined portion of material along at its one longitudinal edge upon its path of travel, comprising:

  • drum means comprising at least two spaced-apart cooperative and rotatable drums, each having an axis of rotation and each located opposite said one longitudinal edge of said material,means for mounting said drums transversely relative to said material in a manner their axis is in alignment relative to each other in a vertical plane and for retaining said drums in a shearing and non-shearing relationship with said material,said drums having cooperative arcuate surface areas and cooperative flat surface areas,arcuate knife means mounted around said arcuate surface area of said drum forming a continuous predetermined radius and extending across said arcuate surface which begins and ends at opposite locations relative to said flat surface area thereof to give a predetermined edge cut having a slope between the beginning and end of the edge cut that will be a continuous radius and of a desired length and depth, andmeans for synchronously rotating said drum means in relation to the speed of said material, including means for controlling the rotation of said drum means constructed in a manner so that in said inoperative mode said flat surface areas of said two drums oppose and are fixedly held adjacent each other so as not to be contacted by said travelling material, and in an operative mode said two drums commence to rotate in opposite directions but in the same direction of the travel of the material to bring said arcuate knife means on said each drum together in a cooperative contacting relationship with said material to effect said shearing and removing of said predetermined portion in said material.

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