中国塑料 ›› 2022, Vol. 36 ›› Issue (6): 137-141.DOI: 10.19491/j.issn.1001-9278.2022.06.021

• 机械与模具 • 上一篇    下一篇

智能热水壶主体复杂抽芯及随形水路注塑模设计

胥永林1, 张维合1(), 冯国树2, 宋东阳2, 杜海2, 王靖2, 魏海涛2   

  1. 1.广东科技学院机电工程学院,广东 东莞 523000
    2.广东华睿智连电子科技有限公司,广东 东莞 523777
  • 收稿日期:2022-01-21 出版日期:2022-06-26 发布日期:2022-06-27
  • 通讯作者: 张维合(1964—),男,教授,从事模具教学与研究,allenzhang0628@126.com
    E-mail:allenzhang0628@126.com
  • 基金资助:
    年东莞市企业科技特派员项目《3D打印随形水路技术在注塑模具中的应用》(20201800500612)

Design of injection mold with complex core pulling and conformal cooling channel for smart kettle shell

XU Yonglin1, ZHANG Weihe1(), FENG Guoshu2, SONG Dongyang2, DU Hai2, WANG Jing2, WEI Haitao2   

  1. 1.GuangDong University of Science & Technology,Dongguan 523000,China
    2.Guangdong Huaris Electronic Technology Co,Ltd,Dongguan 523777,China
  • Received:2022-01-21 Online:2022-06-26 Published:2022-06-27
  • Contact: ZHANG Weihe E-mail:allenzhang0628@126.com

摘要:

根据智能热水壶主体结构特点和技术要求设计了一副复杂侧向抽芯及随形水路注塑模具。模具采用顺序侧向抽芯及延时侧向抽芯机构,有效改善了包紧力大、脱模困难塑件的注塑模具结构。定模型芯和动模型芯采用3D打印随形水路,有效改善了熔体热量多、成型零件温差大、温度高注塑模具的温度控制系统。模具采用了多项先进的创新技术,成型零件温差降低了50 %,注射成型周期缩短了约18 %,塑件变形量减小了75 %,尺寸精度提高了2级,达到了MT3(GB/T 14486—2008)。试模一次成功,成型塑件的外观质量和尺寸精度均达到了设计要求。

关键词: 智能热水壶主体, 注塑模具, 顺序侧向抽芯, 延时侧向抽芯, 随形水路

Abstract:

Based on the structural characteristics and technical requirements of the smart kettle shell, an injection mold with a complex core?pulling mechanism and a conformal cooling channel was designed. The structure of this injection mold with a large wrapping force and difficult demoulding modes was improved effectively by using a sequential lateral core?pulling mechanism and a delayed lateral core?pulling mechanism in the mold. The problems in the temperature control system, including a great amount of heat from the melt, a large temperature difference in the formed parts, and a high mold temperature, were solved using the 3D?printing conformal cooling channels. The temperature difference of the mold was reduced by 50 %, the injection molding cycle was shortened by about 20 %, the deformation of the plastic part was reduced by 75 %, and the dimensional accuracy was improved by two levels, reaching the MT3 grade (GB/T 14486—2008). A one?time success was achieved for the injection?molding test. The appearance quality and dimensional accuracy of the injection?molded parts could meet the requirement of design, confirming that the mold structure was advanced and innovative.

Key words: smart kettle shell, injection mold, sequential lateral core?pulling, delayed lateral core?pulling, conformal cooling channels

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