RANKING CORRECTION SYSTEM FOR HIGH-MIX LOW-VOLUME PRODUCTION LINE

摘要

PROBLEM TO BE SOLVED: To provide a ranking correction system for a high-mix low-volume production line for rearranging workpieces in the priority order of conveyance, and for, when any candidate workpiece is absent, conveying the empty workpiece, and for preventing the line stop of the next process.;SOLUTION: This ranking correction system is provided with a reading means for reading the specification information of a workpiece conveyed from the previous process and a control programmable logic controller for storing the workpiece conveyed from the previous process in a storage until the conveyance is decided, and for conveying the workpiece to the next process according to the determined optical ranking. The control program logic controller rearranges the workpieces to be conveyed in the storage in a preliminarily set priority order based on the reading information, and determines whether or not the workpiece in the highest priority is conveyable, and when determining that the workpiece is conveyable, selects the workpiece as the workpiece to be conveyed the next, and when determining that the workpiece is not conveyable, selects the workpiece by repeatedly determining whether or not the workpiece is conveyable in the priority order, and when determining that there is no workpiece to be conveyed the next in the storage, outputs an empty workpiece.;COPYRIGHT: (C)2009,JPO&INPIT