Research on sequencing of mixed-model assembly line and logistics system modeling in automobile composite assembly distribution center

In order to break through the current situation of final vehicle logistics industry's meager profit, we proposed a new service mode for final vehicle assembly and logistics. In the mode, a composite Assembly Distribution Center (ADC) was set up, which achieved the parts transportation and terminal distribution of final assembly vehicle and solved the problem of high damage rate and high cost caused by the long haul final vehicle transportation. Taking AnJi automobile logistics as an example, the internal layout of the ADC in Tianjin was designed. It included the location of the production line, the specifications of the storage area and the range of the sorting area. Using goal chasing method, the production sequence of mixed-model assembly line in ADC was determined. The solving process showed that the time performance is better than other methods’. The group technical theory defined the layout of the parts inventory. The logistics system modeling and simulation of mixed model assembly line were performed with Flexsim. It showed the process from the parts arrival, the first sorting of the parts and the forklift shelf storage, to the second sorting and on-line production. It was only an illustration of the whole operation in ADC without simulation experiment. The paper put forward a new mode to solve the problem of final vehicle logistics in China, and formulated the sequence and layout simulation of the mixed-model assembly line of the core node ADC in the mode.