汽车侧裙板的热流道大型注塑模具设计
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摘要
根据汽车侧裙板的结构特征、材料特征、塑件外观质量与批量要求等,设计了一副热流道转普通流道的大型复杂注塑模具;经过详细的模流分析,确定了热流道5点进胶的最佳浇注系统方案,进胶顺序由顺序阀根据成型塑件质量情况进行调节;模具侧向抽芯机构复杂,温度控制系统均衡高效,导向定位系统精确可靠。结果表明,模具结构先进合理,自投产以来,运行安全平稳,成型周期控制在75s之内,塑件尺寸精度达到MT4。
According to the structural characteristics,material characteristics and plastic appearance quality of an automobile side apron as well as the requirements for batch production,a large complex injection mould with a hot-runner-plus-common-runner structure was designed.An optimal design proposal for gating system was determined as a 5-point hot runner feed system through a careful mold flow analysis,and the feed sequence was adjusted by the sequence valve according to the quality of molded parts.It was confirmed that the side core pulling mechanism of the die was complicated,the temperature control system was balanced and efficient,and the guide positioning system was accurate and reliable.The results indicated that the molding cycle could be controlled within 75 sand the dimensional accuracy of plastic parts achieved MT4 thanks to the advanced design and reasonable structure for the mould developed by this work.The mould was kept a stable operation since the formal production.
According to the structural characteristics,material characteristics and plastic appearance quality of an automobile side apron as well as the requirements for batch production,a large complex injection mould with a hot-runner-plus-common-runner structure was designed.An optimal design proposal for gating system was determined as a 5-point hot runner feed system through a careful mold flow analysis,and the feed sequence was adjusted by the sequence valve according to the quality of molded parts.It was confirmed that the side core pulling mechanism of the die was complicated,the temperature control system was balanced and efficient,and the guide positioning system was accurate and reliable.The results indicated that the molding cycle could be controlled within 75 sand the dimensional accuracy of plastic parts achieved MT4 thanks to the advanced design and reasonable structure for the mould developed by this work.The mould was kept a stable operation since the formal production.
引文
[1]张维合.注塑模具设计实用手册[M].北京:化学工业出版社,2011:112-177.
[2]张维合.注塑模具设计经验技巧与实例[M].北京:化学工业出版社,2015:67-82.
[3]万鹏程.汽车保险杠注塑模浇注系统设计与成型参数优化[M].昆明:昆明理工大学出版社,2011:58-75.
[4]陈剑玲.茶饮杯螺旋底盖侧抽芯热流道注塑模具设计[J].中国塑料,2015,29(9):92-96.CHENG J L.Design of Injection Moulds with Core-pulling Mechanism and Hotrunner System for Screwed-bowlcovers[J].China Plastics,2015,29(9):92-96.
[5]程美.基于Moldflow的汽车盒体件注塑模具设计[J].中国塑料,2016,30(2):104-108.CHENG M.Injection Mold Design of Auto Parts Based on Moldflow[J].China Plastics,2016,30(2):104-108.
[6]高慧,张文兵,沈建新,等.汽车油箱密封盖注塑模具的研制[J].中国塑料,2015,29(11):113-116.GAO H,ZHANG W B,SHEN J X,et al.Development of Injection Molds for Automobile Fuel Tank Sealing Covers[J].China Plastics,2015,29(11):113-116.
[7]张维合.汽车注塑模具设计要点与实例[M].北京:化学工业出版社,2016:23-45.
[2]张维合.注塑模具设计经验技巧与实例[M].北京:化学工业出版社,2015:67-82.
[3]万鹏程.汽车保险杠注塑模浇注系统设计与成型参数优化[M].昆明:昆明理工大学出版社,2011:58-75.
[4]陈剑玲.茶饮杯螺旋底盖侧抽芯热流道注塑模具设计[J].中国塑料,2015,29(9):92-96.CHENG J L.Design of Injection Moulds with Core-pulling Mechanism and Hotrunner System for Screwed-bowlcovers[J].China Plastics,2015,29(9):92-96.
[5]程美.基于Moldflow的汽车盒体件注塑模具设计[J].中国塑料,2016,30(2):104-108.CHENG M.Injection Mold Design of Auto Parts Based on Moldflow[J].China Plastics,2016,30(2):104-108.
[6]高慧,张文兵,沈建新,等.汽车油箱密封盖注塑模具的研制[J].中国塑料,2015,29(11):113-116.GAO H,ZHANG W B,SHEN J X,et al.Development of Injection Molds for Automobile Fuel Tank Sealing Covers[J].China Plastics,2015,29(11):113-116.
[7]张维合.汽车注塑模具设计要点与实例[M].北京:化学工业出版社,2016:23-45.