Lean Logistics Design Of Body Parts Welding Enterprises Based On Flexsim

As one of the important industries for the growth of the national economy,the automobile manufacturing industry has maintained rapid development for many years,and the profit margin of the industry has gradually reduced.Enterprises in the automobile manufacturing supply chain will face greater pressure to survive.In order to improve the competitiveness of enterprises,enterprises need to further reduce production costs and improve production efficiency under the premise of ensuring product quality.Company A is a body parts welding company located upstream of the vehicle manufacturer in the supply chain.In response to market competition,company A adjusted its development goals and changed its daily production to a lean approach in order to strive for greater living space.After investigation,it was found that after the multi-variety and small-batch production line of A company was put into operation,the logistics in the factory mainly had problems such as waste of loading,unloading and handling,unreasonable arrangement of the storage area on the side of the line,and low on-time supply rate.In order to solve these problems,based on related theories such as lean logistics,in-plant logistics optimization,system layout,system simulation,etc.,this paper carried out a lean design of A company’s in-plant logistics.The main research contents are as follows:(1)Combining lean logistics ideas,clarified the principles of in-plant supply line packaging planning,and optimized the supply line packaging plan.(2)Design the layout of the body parts welding workshop through the system layout design method(SLP).Firstly,the operation unit is divided,and the equivalent logistics calculation model that meets the characteristics of the body parts welding industry is designed.Then analyze the logistics relationship and non-logistics relationship between the operation units,and draw the logistics relationship correlation diagram and the non-logistics relationship correlation diagram in turn.Then analyze the comprehensive relationship between the operation units and draw a comprehensive relationship diagram.Finally,draw the relative map of the operation unit position,and get the optimized plan layout plan of the operation unit in the factory based on the actual constraints such as the area of the operation unit and the site.(3)Collect and analyze the raw data of the logistics system of the tractor supply line driven by Andon,and use Flexsim to build the simulation model of the multi-load tractor supply line logistics system under dynamic dispatch;According to the marginal effect,the optimal tractor configuration number is determined,and the optimized tractor configuration plan is obtained.(4)An evaluation system of lean logistics in the factory was constructed,and the optimization effect of the lean logistics design in the factory of A company was evaluated using the relational matrix analysis.This paper discovered the main bottlenecks in company A’s in-plant logistics,and optimized the company’s supply line material packaging scheme,the layout scheme of the plant’s operating units,and the supply line tractor configuration scheme.The feasibility and superiority of the designed in-plant lean logistics program are verified.The implementation of the lean logistics design plan has achieved the enterprise’s goal of "reducing costs and increasing efficiency".This paper has successfully applied lean thinking to enterprise logistics management.The design methods adopted,the design schemes obtained,a nd the evaluation system constructed can all provide references for similar production enterprises.