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Automatic article feeding system

  • US 5,232,331 A
  • Filed: 03/13/1991
  • Issued: 08/03/1993
  • Est. Priority Date: 08/07/1987
  • Status: Expired due to Term
First Claim
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1. A method for feeding articles to a robot, comprising the steps of:

  • stocking a plurality of containers, each retaining a plurality of articles, in a stocker;

    supplying containers one-by-one from the stocker to feed articles to the robot;

    withdrawing empty containers from the stocker;

    stacking the empty containers withdrawn from the stocker on an elevator;

    detecting the thickness of the empty containers withdrawn from the stocker;

    detecting the height of the stack of empty containers withdrawn from the stocker; and

    calculating a descending amount of the elevator based on the detected thickness of the empty containers and height of the empty container stack.

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