智库大数据存储器面盖层叠精密模设计  

Design of Precision Die for Lamination of Big Data Memory Cover of Think Tank

作　　者：周宪章 付雯[2] 李利佳 ZHOU Xianzhang;FU Wen;LI Lijia(Chongqing Academy of Education Science,Chongqing 400015,China;Chongqing College of Electronic Engineering,Chongqing 401331,China;Chongqing Industrial&Commercial School,Chongqing 402223,China)

机构地区：[1]重庆市教育科学研究院,重庆400015 [2]重庆电子工程职业学院,重庆401331 [3]重庆工商学校,重庆402223

出　　处：《塑料》2024年第2期130-134,共5页Plastics

基　　金：重庆市教育委员2021年度科学技术研究计划重大项目(KJZD-M20211440);重庆市科研机构绩效激励引导专项项目(cstc2022jxjl40004)。

摘　　要：结合大数据存储器面盖高精度一模多腔大批量注射成型生产的需要,采用CAE分析确定单腔浇注系统、冷却系统,然后,构建多腔浇注系统,得到的成型方案为单腔采用牛角浇口进浇、热流道+冷流道复合式浇注系统进行供料,基于此,设计了一种双层叠层注射模具,模具模腔设置为1模8腔,分为上下2层、每层设置4个模腔,8个模腔的成型塑件的精度均能达到MT3级。模具中,结合塑件内壁倒扣、插桩等特征的脱模需要,单腔模腔配套设置了1个滑块机构和4个斜顶机构,滑块机构依靠模具的开模动力采用斜导柱驱动,斜顶及顶针采用油缸驱动推板进行顶出。热流道系统由5个热嘴和1块热流道板组成,采用H型布局,保证了8个模腔得到均衡充填。模具分为2次开模顺序打开,采用专用型开闭顺序控制机构进行开闭顺序控制,利用多重导柱机构件对开模时中间定模部分进行运动导向,保证模腔的闭合复位稳定可靠。设计的模具有效地解决了实际生产中一模多腔布置时难以得到精度较高且等级一致的塑件的难题。To meet the need of high-precision the first mock examination multi cavity mass injection molding production of big data memory cover,first used CAE analysis to determine the single cavity gating system and cooling system,and then build a multi cavity gating system.The molding scheme obtained was the single cavity used a cow horn gate for feeding,and used a hot runner+cold runner compound gating system for feeding.Based on this,a double-layer laminated injection mold was designed,with mold cavity 1 and mold cavity 8,it was divided into two layers,and each layer was equipped with four mold cavities.The molded plastic parts with eight mold cavities could achieve the same MT3 molding accuracy.In the mold,according to the demoulding needs of the inner wall of the plastic parts,such as back-off and pile insertion,the single-cavity mold cavity was equipped with a slider mechanism and four lifter mechanisms.The slider mechanism was driven by the angle pin depending on the mold opening power,and the lifter and the ejector pin were driven by the hydraulic cylinder driving the push plate.The hot runner system consists of 5 hot nozzles and 1 hot runner plate,with an H-shaped layout,ensuring the equivalence of filling for 8 mold cavities.The mold was opened in two mold opening sequences.The special opening and closing sequence control mechanism was used to control the opening and closing sequence.The multiple guide pillar mechanism was used to guide the movement of the middle fixed mold part during mold opening to ensure the stable and reliable closing and resetting of the mold cavity.The designed mold effectively solved the practical production problem that the plastic parts were difficult to obtain a higher grade and consistent precision when the first mock examination was arranged with multiple cavities.

关 键 词：智库大数据 面盖塑件 叠层模具 精密成形 注射 模具结构 

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]