Abstract
Assembly is one of the key phases of the production process, as it significantly affects productivity and the smoothness of logistics flows. Eliminating logistical and process-related waste therefore represents one of the most effective approaches for improving the performance of assembly systems while simultaneously supporting the smooth flow of materials throughout the entire organization. The paper focuses on the optimization of the intra-company logistics of an assembly line for the production of automatic elevator doors using a discrete simulation method. The digital model of the line was created in the Tecnomatix Plant Simulation environment based on real data on operation times, work distribution and material flows in a system without inter-operational bins. The simulation analysis identified the main bottlenecks caused by uneven worker workload and long cycle times of selected operations. Several improvement options were designed and verified using the trial-and-error method. A significant increase in productivity was achieved by introducing a new workstation and redistributing activities among workers, which increased production from 72 to 81 pieces per shift.