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文章编号：1001-4934(2017)04-0052-07
Die and Mould Technology No. 4 2017
物理微发泡微开模注塑成型技术
杨伟，武力军，李瑞文，于善平，唐永亮
（长春富维安道拓汽车饰件系统有限公司，吉林长春130033）
摘要：介绍了一种新型的注塑成型技术-物理微发泡微开模注塑成型技术。该技术采用物理微发泡的单相熔体注射到模腔后迅速将模具微开模，使得内部的熔体继续发泡膨胀，最后冷却定型成产品。相对于普通注塑，物理微发泡微开模注塑技术可以减少产品质量30个百分点以上，同时其物理性能可满足产品的要求。该技术可以
减小产品变形和降低产品内应力，在非外观的汽车内外饰产品中广泛应用。关键词：物理微发泡；开模；壁厚；注塑成型
中图分类号：TG241
文献标识码：A
Injection moldingtechnology of opening mould foamingafterMucell YANG Wei, WU Li-jun, LI Rui-wen, YU Shan-ping, TANG Yong-liang
Abstract: This article introduces a ncw injection molding technology, viz., the opening mould foaming after Mucell. Firstly, the single-phase melt is injected into the mould, and then the mould is quickly opened with a small distance. The inner melt resin continues foa-ming and growing with the opening mould and the final product forms when the growing process stops and the inncr material cools down. Compared with normal injcction process, this ncw process introduces weight saving up to 30 percentage points, and meanwhile, physi-cal properties of the products can fullfill the corresponding requiremcnts. In addition, thc deformation and internal stress of the products are highly reduced with the technology. This process can be widelyused in the production of non-appearance parts for automotive,which helps reduce the weight of car and save cnergy
Keywords: Mucell; mould opening; wall thickness; injection molding
品，目前应用于各个行业。为了保证在冷却成
0引言
传统的注塑工艺是将熔融的注塑料直接列加热的料筒注人到注塑模腔内，在模腔内冷却成型。注塑成型可以成型各种复杂结构的制
收稿日期：2016-12-31
作者简介：杨伟（1983一），男，工程师。万方数据
型过程中产品各部分能均勾冷却，不出现因收缩而产生的外观缺陷或变形问题，传统的注塑工艺要求产品各部分壁厚均匀，筋的厚度相对壁厚的比例要小，否则筋与产品面的结合处因熔体过多，导致冷却时间延长，同时产品表面出