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Automatic conveyance system

  • US 5,125,783 A
  • Filed: 11/14/1990
  • Issued: 06/30/1992
  • Est. Priority Date: 11/14/1989
  • Status: Expired due to Fees
First Claim
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1. An automatic conveyance system for conveying unit racks, each rack being capable of containing at least one unit, the system comprising:

  • a buffer storage for storing a plurality of unit racks, said unit racks being empty or containing units;

    a plurality of test cells for testing said units contained in said unit racks;

    a plurality of test cell controllers each being provided in one of said test cells and each being constructed to accept a requirement from an operator to remove a unit rack from said buffer storage, to store a unit rack into said buffer storage and to convey a unit rack from one of said test cells to another one of said test cells;

    a plurality of automatic guided vehicles each conveying a unit rack; and

    a computer connected to said buffer storage and containing information on said unit racks, said computer being also connected to said test cell controllers and to each of said automatic guided vehicles, said computer including means for controlling each automatic guided vehicle, based on the requirement accepted by a respective one of said test cell controllers and said information on said unit racks stored in said buffer storage, so that a respective automatic guided vehicle conveys an assigned unit rack from said buffer storage to a desired one of said test cells, between two of said test cells, and from one of said test cells to another process,said computer automatically generating a combination of instructions for the plurality of automatic guided vehicles to run through different running routes in one run of each automatic guided vehicle,each of said automatic guided vehicles comprising a forklift means, and each of said test cells comprising means for loading and unloading the unit racks to and from each of the automatic guided vehicles.

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