微波炉内盖新型叠层注塑模具设计  

Design of new stacked injection mold of microwave oven inner cover

作　　者：李国林 LI Guolin(School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430000,China)

机构地区：[1]华中科技大学机械科学与工程学院,武汉430000

出　　处：《中国塑料》2025年第2期91-93,共3页China Plastics

摘　　要：根据微波炉内盖结构特点设计了新型叠层注塑模具。模具采用全新产品布局和热流道冷流道交互浇注方式及新型斜顶结构,较传统叠层模具成本降低40%,注塑机吨位降低45%。模具通过采用极简动作控制拉钩机构代替常规叠层模齿轮齿条动作控制机构,成型周期缩短了10%。模具导向定位系统采用方型导柱和青铜导套,大大提高了模具的精度和寿命。A new stacked injection mold was designed according to the structural characteristics of the microwave oven in-ner cover.The mold adopts a new product layout,an interflow injection method,and a new lifter structure of hot and cold runners were adopted for the designed mold,resulting in a reduction in the mold cost by 40%and a decrease in the ton-nage of injection machines by 45%.Through using a minimalist action control mechanism instead of the conventional stacked gear and rack action control mechanism,the molding cycle was shortened by 10%.Square guide pillars and guide sleeves were adopted for the mold guiding and positioning system,improving the accuracy and lifespan of the mold greatly.

关 键 词：微波炉内盖 新型叠层注塑模具 新型斜顶结构 极简动作控制结构 热流道冷流道浇注系统 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]