| With the rapid development of science and technology has brought profound changes to human life,industrial 4.0 is a profound change in Chinese manufacturing industry.In recent years,with the rise of Electronic Business and cold chains,food safety and road transport regulations promulgated,many positive cold chain market ushered in the explosive growth.Q company is the world’s leading manufacturer of reefer trailers,in the volatile economic situation and the huge of market demand,the urgent need to use scientific methods to achieve rapid increase in production capacity and quality,reduce costs to remain competitive.In this paper,as a typical representative of the traditional manufacturing companies,through the comprehensive use of the production line balance method and tools,to complete the optimization of the reefer trailers production line.First of all,through data analysis to identify the capacity bottlenecks of main production line in company,then determine the optimization and improvement of the floor line;optimization includes three parts of the production process,parts process,assembly and foaming process.Optimization of floor parts production,through the Sankey diagram calculation unreasonable waste existing stamping machine layout,optimization and adjustment of the layout form of PSB processing island,and optimize the logistics;some parts of adjustment of comprehensive efficiency of processing technology of high quality,measure the manufacturing cost unchanged.Application of time measurement,ECRS rule and 5W1 H tools to optimize the floor assembly line,to identify the number of floor nail design optimization,identification of bottleneck and adjust the allocation of workload balanced,production line balance efficiency improved significantly after optimization.Floor foam production,the use of ECRS law to cancel the floor foam support,simplify the process to improve the quality of efficiency.Because the floor line is the bottleneck of the production line in Q company,the balancing and optimization of the floor Increase the reefer trailer capacity from 12 units / day increased to 16 units / day directly,up to 30%,the total work hours of trailer is reduced by 18%,the product quality has been further improved.Through the line balancing and optimization of the project,the efficiency and quality are greatly improved,greatly enhance the core competitiveness,sustained and healthy development of the company.This is a key step in the transformation and upgrading of Q company,also is a classic proof of industrial engineering application. |