【正文】 realizing its technical specifications and coal the practicality cases of production and manufactureability will be done to design the injection plastics mould. The plastic injection mould design includes the injection molding technological process, the parting surface design, the cavity design, the core design, the particular structural design, the parts craft analysis and the choice for standard ponents,etc. It is detailed in introducing the dividing plane, cavity disposing, the gating system, the gas withdrawal system, the heating or cooling system, the pack out or divorce mechanism， and the design process for the mostly parts. The new design concepts and new design methods are adopted in the design process. Lower costs, shorten production cycles and increased productive efficiency, as using threedimensional CAD solid model and a 3D CAD knowledgebased assisted injection mould design system for all phases of the productmould development life cycle. Keywords ： plastic mould。 mould structure。 CAD/CAE/CAM III 目 錄 摘 要 ..................................................................................................................... I Abstract .................................................................................................................. II 第 1 章 緒論 ........................................................................................................... 1 目的 .......................................................................................................................... 1 產(chǎn)品設(shè)計和重建模型 ...................................................................................... 1 模具設(shè)計 .......................................................................................................... 1 模具制造 .......................................................................................................... 1 試具 修模 ........................................................................................................ 1 制品分析的設(shè)計要求 ...................................................................................... 2 計算制品的體積和質(zhì)量 .................................................................................. 2 明確塑料的特性 ............................................................................................... 2 要求 .......................................................................................................................... 3 設(shè)計思想和方法概述 .............................................................................................. 3 設(shè)計軟件選用 .......................................................................................................... 4 第 2 章 型腔總體布置與分型面的選擇 ............................................................... 5 型腔總體布置 .......................................................................................................... 5 分型面的選擇 ........................................................................................................... 5 第 3 章 注塑機的選用 ........................................................................................... 6 澆注系統(tǒng)設(shè)計 .......................................................................................................... 6 澆口的設(shè)計 .............................................................................................................. 7 澆口位置的確定 .............................................................................................. 7 澆口形式和數(shù)量的確定 .................................................................................. 7 澆口尺寸的確定 .............................................................................................. 7 澆口零件 .......................................................................................................... 8 第 4 章 成型零部件的設(shè)計 ................................................................................... 9 成型零部件的結(jié)構(gòu)設(shè)計 .......................................................................................... 9 凹模（型腔板） .............................................................................................. 9 凸模（型芯板） .............................................................................................. 9 成型零部 件的工作尺寸計算 ................................................................................ 10 制品尺寸精度的影響因素 ............................................................................ 10 成型零部件的尺寸計算 ................................................................................. 10 成型零件材料的選用及熱 處理方法 .................................................................... 13 第 5 章 側(cè)向分型與抽芯機構(gòu)設(shè)計 ..................................................................... 14 運動分析 ................................................................................................................ 14 抽芯機構(gòu)主要參數(shù)的確定 .................................................................................... 15 第 6 章 成型型腔壁厚和底板厚度的計算 ......................................................... 18 IV 成型型腔壁厚的計算 ............................................................................................. 18 型腔底板厚度計算 ................................................................................................ 19 導向機構(gòu)設(shè)計 ........................................................................................................ 19 導柱 ........................................................................................................................ 19 導向孔 .................................................................................................................... 19 導柱的數(shù)量和布置 ................................................................................................ 20 第 7 章 脫模機構(gòu)設(shè)計 ......................................................................................... 21 脫模機構(gòu)的設(shè)計原則 ..............................................................................