Green manufacturing is a growing trend, and an effective layout design method for production lines can reduce resource wastage in processing. This study focuses on existing problems such as low equipment utilization, long standby time, and low logistics efficiency in a mixed-flow parallel production line. To reduce the energy consumption, a novel method considering an independent buffer configuration and idle energy consumption analysis is proposed for this production line’s layout design. A logistics intensity model and a machine tool availability model are established to investigate the influences of independent buffer area configuration on the logistics intensity and machine tool availability. To solve the coupling problem between machine tools in such production lines, a decoupling strategy for the relationship between machine tool processing rates is explored. An energy consumption model for the machine tools, based on an optimized configuration of independent buffers, is proposed. This model can effectively reduce the idle energy consumption of the machine tools while designing the workshop layout. Subsequently, considering the problems encountered in workshop production, a comprehensive optimization model for the mixed-flow production line is developed. To verify the effectiveness of the mathematical model, it is applied to an aviation cabin production line. The results indicate that it can effectively solve the layout problem of mixed-flow parallel production lines and reduce the idle energy consumption of machine tools during production. The proposed buffer configuration and layout design method can serve as a theoretical and practical reference for the layout design of mixed-flow parallel production lines.

绿色制造是大势所趋，有效的生产线布局设计方法可以减少加工过程中的资源浪费。本研究主要针对混流并行生产线中存在的设备利用率低、待机时间长、物流效率低等问题进行研究。为降低能耗，该生产线的布局设计提出了一种考虑独立缓冲器配置和空闲能耗分析的新方法。建立物流强度模型和机床可用性模型，研究独立缓冲区配置对物流强度和机床可用性的影响。为解决此类生产线中机床之间的耦合问题，探讨了机床加工速率之间关系的解耦策略。提出了一种基于独立缓冲器优化配置的机床能耗模型。该机型在设计车间布局时，可有效降低机床闲置能耗。随后，针对车间生产中遇到的问题，开发了混流生产线综合优化模型。为验证数学模型的有效性，将其应用于某航空客舱生产线。结果表明，它可以有效解决混流并联生产线的布局问题，降低生产过程中机床的闲置能耗。