Optimization Design of Automatic Logistic System for Cigarette Industrial Enterprises

The automatic logistic system in Changsha Cigarette Factory has the disadvantages of information disorder about received cigarette cases, vacuum failures of manipulator and over-rejection, which interrupt case receiving and increase downtime.Therefore, the case receiving system was optimized as following:1)optimizing the control program to avoid the malfunctions caused by trailing gummed tape or closely touched cases;2)replacing 42X series barcode scanners with 62X series to enhance the abilities of error correction and system's resolution;3)adding a glue applicator to prevent the carton from dropping out of the case because of case flaps distortion.The optimized system adopted Siemens industrial control network and used case barcode for case sorting, picking and receiving, which is simple, efficient, and convenient for receiving/retrieving management and product tracing.The practical application indicated that the monthly average downtime reduced from 1.2 to 0.23 hours/5 hundred million cigs., the problem of brand mixing was resolved, and the labor intensity of operators was reduced.