熔接痕位置预测及优化技术研究进展

Research Progress in the Technologies of Predicting and Optimizing the Location of Weld-lines in Injection-molded Parts

综述了熔接痕位置预测、优化和控制技术的研究进展,介绍了填充过程熔接痕形成的数学模型。对数值模拟技术、数值模拟技术结合数学规划理论、阀式浇注和大型注射成型制品多浇口进料顺序控制技术等3种技术的分析流程、预测方法和应用实例进行了详细介绍,其中基于数值模拟技术和数学规划理论结合的熔接痕位置确定新算法是行之有效的熔接痕位置优化技术,已成为当前研究热点。随着该技术的日趋成熟,应用范围将逐渐增大。而阀式浇注和大型注射成型制品多浇口进料顺序控制技术的实施可以成功避免注塑件熔接痕的出现,在大型零件生产中具有广阔的应用前景。

Advances in predicting, optimizing, and controlling the location of weld-lines in injectionmolded parts were reviewed. The mathematical model of weld-lines＇ formation in filling process was introduced. The analysis flow, predicting method and practical examples of the technologies such as numerical simulation, simulation combined with the theory of mathematics programming, valveinjection and the control technique of multi sprue feeding sequence for large injection parts were introduced in detail. Such simulation technology based on a combination of theory and mathematics programming had become a focus of research with increasing applications. Valve-injection and the control technique of multi sprue feeding sequence for large injection parts can be successfully implemented to avoid weld-lines, and have wide application prospect in industrial practice.