直升机座舱连接件注塑模具设计  

Design of injection mould for helicopter cockpit connectors

作　　者：杨琴[1] 王清[1] 吴芳榕 熊建武 胡智清 陈黎明 高伟 陈利 YANG Qin;WANG Qing;WU Fangrong;XIONG Jianwu;HU Zhiqing;CHEN Liming;GAO Wei;CHEN Li(Changsha Aeronautical Vocational and Technical College,Changsha 410124,China;Hunan Automotive Engineering Vocational University,Zhuzhou 412001,China;Xiangtan Vocational College of Science and Technology,Xiangtan 411199,China;Shaoyang General Aviation Vocational College,Shaoyang 422000,China;Hunan Financial Industrial Vocational-technical College,Hengyang 421002,China;Hunan Zhida new material Co.,Ltd.,Changsha 410019,China)

机构地区：[1]长沙航空职业技术学院,长沙410124 [2]湖南汽车工程职业大学,湖南株洲412001 [3]湘潭科技职业学院,湖南湘潭411199 [4]邵阳通航职业技术学院,湖南邵阳422000 [5]湖南财经工业职业技术学院,湖南衡阳421002 [6]湖南智达新材料有限公司,长沙410019

出　　处：《工程塑料应用》2024年第11期110-115,共6页Engineering Plastics Application

基　　金：2023年长沙航空职业技术学院院级重点课题(YB2302)。

摘　　要：针对直升机座舱连接件的功用要求及采用注射成型生产要求,选用了玻纤改性的聚砜对其进行注射成型,并为之配套设计了一副两板式冷流道两次开模模具用于塑件的注塑生产。模具中,使用聚砜成型时,浇注系统设计为潜伏式单浇口,浇口开设于模具型腔一侧,浇注口直径选用Ø1.5 mm。针对塑件局部位置的两个深方形孔的成型与脱模,设计了2个油缸抽芯机构。针对塑件螺柱座中分段式间隔非连续性内螺纹特征的成型与脱模,创新设计了一种缩芯式滑块抽芯机构,机构中,将3段非连续性内螺纹分别使用3个内缩抽芯滑块进行成型,然后此3个内缩抽芯滑块使用1个中央型芯通过斜燕尾槽进行驱动,中央型芯的驱动动力来自模具开模打开动力。使用该机构可以避免内螺纹特征采用缩芯方式抽芯时用6面差速滑块机构或内螺纹旋转抽芯机构而带来的机构复杂性和模具制造成本的提高。在使用本内缩抽芯滑块的条件下,模具制造成本和加工装配难度都有所降低,模具制造成本有效缩减10%左右。In response to the functional requirements of helicopter cockpit connectors and the production requirements for injection molding,glass fiber modified polysulfone was selected for injection molding,and a kind of two plate cold runner double opening mould was designed for the injection molding production of plastic parts.In the mould,when using polysulfone for molding,the gating system was designed as a single submarine gate,with the gate opening on one side of the mould cavity and a gating port diameter ofØ1.5 mm.Two oil cylinder core pulling mechanisms were designed for the molding and demoulding of two deep square holes in the local position of the plastic part.A core shrinking slider core pulling mechanism was innovatively designed for the forming and demoulding of segmented discontinuous internal threads in plastic screw seat.In the mechanism,three discontinuous internal threads were formed using three core shrinking sliders,and then these three core shrinking sliders were driven by a central core through a diagonal dovetail groove.The driving power of the central core comes from the opening power of the mold.The advantage of using this mechanism is that it can avoid the complexity of the mechanism and the increase in mould manufacturing costs caused by the use of a 6-sided differential slider mechanism or an internal thread rotating core pulling mechanism when the internal thread feature was used for core pulling.Under the condition of using the internal shrinkage core pulling slider,the mould manufacturing cost and processing assembly difficulty have been reduced,and the mould manufacturing cost had been effectively reduced by about 10%.

关 键 词：聚砜 玻纤改性 直升机座舱连接件 缩芯滑块机构 模具结构 注射成型 

分 类 号：TG243[金属学及工艺—铸造]