Optimization of Cargo Slot and Storage Space in Cigarette Production Warehouse
As a key link in cigarette production,the stock warehouse operation is mainly responsible for the storage,quality inspection,batching,and exit of raw materials.Its efficient operation directly affects the effectiveness and smoothness of cigarette production.However,most cigarette factories in China still rely on manual operation in cigarette stock warehouses,and there are issues such as unreasonable warehouse zoning and random allocation of carton storage space,leading to inefficiency in the entry and exit of cigarette stock,which in turn affects the efficiency of cigarette production.Based on this,aiming to improve the efficiency of stock operations in cigarette production,this paper studied the optimization of the cargo slots and storage space in a cigarette stock warehouse.The optimization of the storage space involves two stages:single carton storage upon entry and carton placement after batching,making it a phased decision-making problem.To solve it,first,an optimized cargo slot layout plan is proposed in light of the actual operational process of the cigarette stock warehouse.Second,two mathematical models were established with the objectives of mini-mizing total handling intensity and maximizing carton turnover efficiency respectively,and an improved large neighborhood search algorithm was designed to solve the models.Finally,a numerical example was conducted using nine data sets varied in scale to verify the effectiveness of the model and the algorithm.The results show that(1)the algorithm of this paper could obtain high-quality feasible solutions more quickly;(2)compared to the status quo of the stock warehouse,after optimization,the total handling intensity was re-duced by an average of 14.60%,and the carton cigarette turnover rate was increased by an average of 27.92%.The research results of this paper can optimize the operational process of the stock warehouse by re-ducing detours in the handling process through more efficient zoning and lowering labor costs.On the other hand,the algorithm designed in this paper can be embedded in digital warehouse systems to quickly obtain optimal storage plans for inbound and batched cartons,providing strong support for the comprehensive digi-talization of cigarette factories.The phased storage space optimization model and the algorithm framework proposed in this paper have certain degree of universality and can be applied to other warehousing systems that require multi-stage management,such as those in the food,pharmaceutical,and electronics industries.Therefore,future research can further verify and expand the applicability of the algorithm in these applica-tion contexts,providing theoretical support and practical tools for the intelligent management and digital transformation of multi-industry warehousing systems.
cigarette stockcargo slot layoutstorage space allocationlarge neighborhood search algorithm
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