基于Moldflow优化的计算机CPU涡轮风扇模具设计  

Mold Design of Computer CPU Turbine Fan Based on Moldflow Optimization

作　　者：刘雷 LIU Lei(Jiangxi Industry Polytechnic College,Nanchang,Jiangxi 330096,China)

机构地区：[1]江西工业职业技术学院,江西南昌330096

出　　处：《塑料》2024年第2期184-188,共5页Plastics

基　　金：2021年度江西省教育厅科学技术研究项目(GJJ217406);2021年度江西省高等学校教学改革研究课题(JXJG-21-64-3)。

摘　　要：结合CPU涡轮风扇的注射成型要求,采用CAE辅助分析优化得到了塑件的成型方案为1模1腔、正面中心轴顶端进浇模腔布局,单点热嘴环形热浇口浇注。利用分层抽芯的方法将单个涡轮叶槽的脱模采用上、中、下3层滑块的顺序实施抽芯的方法进行侧抽芯脱模,从而得到整个涡轮风扇叶槽的所需脱模机构为27个滑块机构,分别为上层9个上滑块机构、中层9个中滑块机构、下层9个下滑块机构。根据滑块机构的抽芯驱动需要,将模具的整体结构采用一种假三板模结构,分3次开模,第一次开模用作下层9个滑块机构的侧抽芯驱动;第二次开模用作上层9个滑块机构的侧抽芯驱动;第三次开模用作塑件的完全脱模,第三次开模打开后,随着中层9个油缸驱动9个中滑块侧抽芯动作的完成,塑件自动脱落而实现完全脱模。结合涡轮风扇叶槽难以脱模的实践难题,设计了3层滑块机构按序抽芯,根据模具开模提供的驱动进行设计,有效地解决了涡轮风扇塑件的成型难题,机构动作可靠,生产效率较高。Combined with the injection molding requirements of the CPU turbine fan,the CAE aided analysis and optimization were used to obtain the molding scheme of the plastic part,which was a the first mock examination with one cavity,the top of the front central shaft into the mold cavity layout,and the single point hot nozzle ring hot gate gating.Using the method of layered core pulling,the demoulding of a single turbine blade slot was carried out by using the method of the upper,middle and lower layers of sliders to carry out the side core pulling and demoulding in order,and then the required demoulding mechanism of the entire turbine fan blade slot was 27 slider mechanisms,including 9 upper slider mechanisms in the upper layer,9 middle slider mechanisms in the middle layer,and 9 lower slider mechanisms in the lower layer.According to the core-pulling drive requirements of the slider mechanism,the overall structure of the mold was a pseudo-three-plate mold structure,which was divided into three mold openings.The first mold opening was used for the side core-pulling drive of the lower nine slider mechanisms,the second mold opening was used for the side core-pulling drive of the upper nine slider mechanisms,and the third mold opening was used for the complete demoulding of the plastic parts.After the third mold opening,with the completion of the side core-pulling action of the nine middle slider mechanisms driven by the middle nine oil cylinders,The plastic parts fall off automatically to realize complete demoulding.In view of the practical problem that the turbine fan blade slot was difficult to demould,a three-layer slider mechanism was designed to pull the core in sequence,and then rely on the mold opening to provide the drive to drive the design method,which properly solved the molding problem of the turbine fan plastic parts.The mechanism action was reliable and the production efficiency was high.

关 键 词：CPU涡轮风扇 CAE分析 成型 热流道 注射模设计 设计优化 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TQ330.41[自动化与计算机技术—计算机科学与技术]