基于IWO算法的注塑成型工艺参数研究

Parameter Study in Plastic Injection Molding Process using IWO Algorithm

注塑成型是塑制品生产中最常用的生产工艺,而塑制品的收缩比率是影响产品质量的关键因素.本文以聚丙烯(PP)和聚苯乙烯(PS)为原料的塑制品作为研究对象,确定了注塑工艺中影响塑制品收缩比率的相关参数,主要有熔融温度、注射压力、保压压力和保压时间,通过数学模型研究了以上参数对PP和PS的影响,采用入侵杂草优化(IWO)算法对参数进一步优化.优化结果表明,该模型和算法有效地解决上述问题.

Dimensional change because of shrinkage is one of the most important problems in production of plastic parts using injection molding. In this study, effect of injection molding parameters on the shrinkage in polypropylene （PP） and polystyrene （PS） is investigated. The relationship between input and output of the process is studied using regression method and Analysis of Variance （ANOVA） technique. The selected input parameters are melting temperature, injection pressure, packing pressure and packing time. Effect of these parameters on the shrinkage of above mentioned materials is studied using mathematical modeling. Invasive Weed Optimization （IWO） algorithm is applied to the developed mathematical models. The optimization results show that the proposed models and algorithm are effective in solving the mentioned problems.