基于Moldflow塑料检查井的大型倒装注塑模具设计
Design of large inverted injection mould for plastic inspection well based on Moldflow
冯济斌 1罗勇波 2冯金茂 1黄宝元 1傅莹龙2
作者信息
- 1. 临海伟星新型建材有限公司,浙江临海 317000
- 2. 台州科技职业学院,浙江台州 318020
- 折叠
摘要
针对某款材料为高密度聚乙烯(PE-HD)的塑料检查井的结构特点,对产品采用一模一腔布局,模具采用针阀式热流道系统,通过Moldflow软件对产品的成型过程进行CAE分析.根据CAE分析结果及产品的整体结构特征,模具整体设计成倒装模,将顶出系统设计在定模;在定模侧设计了6组"埋入式方形油缸+大滑块"的脱模结构,减小了模具的整体尺寸;针对产品局部的全周倒扣特征,在4个大滑块的内部巧妙地设计了"八瓣式"的内缩机构,主要由一个大的活动镶块驱动8个小镶块运动;在动模侧采用了8组"斜导柱+弹簧+弹块+T形导向块"的抽芯脱模结构;在冷却系统的设计上,各个大镶块及滑块上都布置了直径14 mm的独立循环水路,在内缩机构的小镶块上设计了直径6 mm的独立循环水路,所有水路几乎沿着产品的形状分布,形成良好的冷却效果;模具实际生产后,各机构运行平稳,产品成型周期及尺寸精度均符合要求,证明该模具的成型及脱模机构设计合理.
Abstract
In view of the structural characteristics of a plastic manhole made of high density polyethylene,the mould adopted one mold one cavity layout,and a needle valve hot runner system.The molding process of the product was analyzed by CAE through Moldflow.Based on the CAE analysis results and the overall structural characteristics of the product,the mould was designed as an inverted mould,and the ejection system was designed in the fixed mould.Six sets of"embedded square oil cylinders+large slider"demolding structures were designed on the fixed mold side,reducing the overall size of the mould.In response to the full circumference retraction feature of the product,an"eight petal"inward retraction mechanism was cleverly designed inside the four large sliding blocks,mainly were driven by a large movable insert to move eight small inserts.A core pulling and demolding structure consisting of 8 sets of"inclined guide columns+springs+spring blocks+T-shaped guide blocks"was adopted on the dynamic mould side;In the design of the cooling system,independent circulating water channels with a diameter of 14 mm were arranged on each large insert and slider,and independent circulating water channels with a diameter of 6 mm were designed on the small insert of the internal contraction mechanism.All water channels were almost distributed along the shape of the product,forming a good cooling effect;After the actual production with the mould,all mechanisms operate smoothly,and the product molding cycle and dimensional accuracy all meet the requirements,proving that the molding and demolding mechanism design of the mold is reasonable.
关键词
塑料检查井/倒装模/内缩机构/全周倒扣/循环水路Key words
plastic inspection well/inverted mould/retraction mechanism/full circle reverse buckle/circulating water-way引用本文复制引用
基金项目
2023年台州市科技计划项目(23gyb29)
浙江省高职教育"十四五"第二批教学改革项目(jg20240401)
出版年
2024
NETL
NSTL
万方数据