Layout Planning of Sortation Conveyors in Parcel Distribution Centers

Fully automated sortation processes play a crucial role in modern distribution networks of the parcel service industry. In this context, the paper on hand systematically investigates di erent design alternatives of closed-loop tilt tray sortation conveyors. Especially, the number of loading stations for feeding parcels into a conveyor system and the relation to the subordinate decision problem of assigning inbound and outbound destinations to dock doors are shown to considerably in uence the throughput of a hub terminal. A novel destination assignment problem is formalized, suited solution procedures are presented and, by means of simulation, the resulting throughput is quanti ed, so that an experienced terminal manager can weigh the operational gains against the investment cost of di erent conveyor layouts.