The Study on an Operation Model for Automatic Warehouse System with Shared Shelves

• Main Authors: CHE-HSIEN YIN, 尹者賢
• Other Authors: WEI-JUNG SHIANG
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/45165475830012222133

碩士 === 中原大學 === 工業與系統工程研究所 === 98 === A well designed material handling system can improve throughput, reduce WIP and avoid overloading the plant. However, the design should fulfill the requirements of the plant. Whenever the operation environment of the plant has changed, the material handling system needs to find a way to match the change. In this study, due to new demands of touch panel, a color filter manufacturing plant plans to restructure material handling system for producing touch panel. However, the economic environment and plant space are limited, therefore stocker storage capacity of touch panel production line is not enough, color filter stocker needs to share storage space for it. This decision needs detailed and effective planning for the automatic material handling system .This study explores the effect of stocker sharing plan of touch panel and color filter, and the simulation method is used to evaluate appropriate operation models with design of experiment. In this experiment, the ratio of shared shelves, touch panel releasing rate and vehicle dispatching rule are the independent factors. Color filter and touch panel throughputs are performance indexes. ANOVA showed that all three independent factors were significant. The outcome showed that if these two stockers work independently, releasing one glass every 30 minutes with shortest dispatching rule, the color filter line had the best throughput. If color filter stocker shared 40% of shelves and releasing one glass every 29 minutes with shortest dispatching rule, the touch panel line had the best throughput. Base on the profit of both products, touch panel has thirty percent more profit than color filter. Using total profit as performance index, with color filter stocker sharing 20% of shelves, and releasing one glass every 30 minutes, and shortest dispatching rule, the operation gains the highest total profit.