翻译这段话：使用多型腔技术可显著提高生产效率并降低成本。但在实际生产中流动不平衡可能导致不同型腔的成品质量不同。在分析多型腔注射成型流动均匀性的影响因素后我们指出了传统的流道设计方法以各型腔注射压力平衡为目标的不足之处并特别提出了剪切效应对流动平衡性的影响。结论是只有以提供相同性质熔料给各型腔为目标来进行模具流道的设计才能实现真正的流动平衡。本文通过使用光学级塑胶原料和模具借助Proe50软件对树

Using multi-cavity technology can significantly improve production efficiency and reduce costs. However, in actual production, flow imbalance may lead to different product qualities for different cavity types. After analyzing the influencing factors of flow uniformity in multi-cavity injection molding, we pointed out the shortcomings of traditional runner design methods that aim for balanced injection pressure for each cavity, and particularly highlighted the influence of shear effects on flow balance. The conclusion is that only by designing mold runners with the goal of providing the same properties of molten material to each cavity can true flow balance be achieved. This article uses optical-grade plastic material and molds, and Proe5.0 software to create a three-dimensional model of resin lenses, and then imports it into Moldex3D for analysis. The results show that...