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《工程塑料应用》 2021年第08期
DOI:10.3969/j.issn.1001-3539.2021.08.015
机顶盒倒灌进浇同模异腔的注塑模具设计及CAE优化分析
陈显冰,陈一飞,施渊吉
南京工业职业技术大学,南京 210023 
Design of Backflow Pouring Injection Mould with One Mould and Different Cavities for Set-top Box and CAE Optimization Analysis
Chen Xianbing, Chen Yifei, Shi Yuanji
Nanjing Vacational University of Industry Technology, Nanjing 210023, China 
摘要:针对某机顶盒两部件同机台生产,采用了一模两腔一次成型两种不同塑料零件的注塑模具设计方法,从而减少了模具设计的数量,提高了生产效率。由于机顶盒产品外观面不得产生浇口痕迹,进浇位置确定于产品内表面,因此设计了倒灌点浇口的浇注形式。模具的推出机构和浇注系统设计在定模一侧,脱料板和动模板之间设计流道块,将熔胶从水口板过渡到型腔内,并实现自动脱料。为克服产品可能出现的缺陷,基于CAE技术对模具设计方案进行模流分析并优化,解决了充填不平衡等现象,提高了产品的成型质量,缩短了模具设计周期。试模结果表明,模具的型腔布局和结构设计方案合理,能够满足机顶盒产品的大批量生产要求。  
Abstract:Aiming at the production of two parts of a set-top box on the same machine, the injection mould design method of forming two different plastic parts in one mould with two cavities at one time was adopted, thereby reducing the number of moulds, improving production efficiency. Since the appearance of this product must not had gate marks, the pouring position was determined on the inner surface of the product, and the pouring form of backflow pouring pin-point gate was designed. The ejection mechanism and pouring system of the mould were designed on the side of the fixed mould, and a runner block was designed between the stripper plate and the moving mould template to transfer the melt from the nozzle plate into the cavity and realize automatic stripping. In order to overcome various defects in the product, the mould design was analyzed and optimized based on CAE technology, which solved the phenomenon of unbalanced injection, improved the forming quality of the product and shortened the mould design cycle. The test results show that the mould's cavity layout and structural design are reasonable, which can meet the mass production requirements of the set-top box products. 
关键词:倒灌进浇;注塑模具;同模异腔;CAE 
Keywords:backflow pouring; injection mould; one mould with different cavities; CAE 
基金:江苏省工业软件工程技术研究开发中心开放基金项目(ZK19-04-07) 
本文引用格式:
陈显冰,陈一飞,施渊吉.机顶盒倒灌进浇同模异腔的注塑模具设计及CAE优化分析[J].工程塑料应用,2021,49(8):87-92.
Chen Xianbing,Chen Yifei,Shi Yuanji. Design of backflow pouring injection mould with one mould and different cavities for set-top box and CAE optimization analysis[J]. Engineering Plastics Application,2021,49(8):87-92. 

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