【正文】 .................................................................................. 7 3 注射機的選擇 ................................................................................... 8 ............................................................................... 8 ABS的工藝條件 ............................................................................................ 8 ....................................................................................... 8 ....................................................................................................... 9 ................................................................................................... 9 ............................................................................................. 9 ..................................................................................... 9 ................................................................................................. 9 模行程校核 ............................................................................................... 10 4 澆注系統(tǒng)的設計 ............................................................................. 11 ................................................................................................. 11 ................................................................................................. 11 ........................................................................................... 11 ................................................................................................... 12 ................................................................................................... 12 ....................................................................................................... 13 5 成型零件工作尺寸的計算 .............................................................. 14 影響塑件尺寸精度的因素 ............................................................................... 14 ......................................................................... 14 ................................................................................................... 15 ........................................................................... 15 ................................................................................................... 15 ............................................................................... 15 ......................................................................................... 15 向尺寸計算 ....................................................................................... 15 ........................................................................................... 16 ........................................................................................... 16 ........................................................................................... 16 ........................................................................................... 16 ............................................................................................. 16 6 導向機構(gòu)設計 ................................................................................. 19 導向機構(gòu)的作用和設計原則 ........................................................................... 19 ........................................................................................... 19 :.................................................................................. 19 、導套的設計 ............................................................................................. 19 ................................................................................................... 20 ................................................................................................... 20 7 脫模機構(gòu)的設計 ............................................................................. 21 基本考慮和要求 ............................................................................................... 21 推出機構(gòu)的確定 ............................................................................................... 21 推件板脫模機構(gòu)設計 的特點和基本原則 ....................................................... 21 頂桿橫截面直徑校核 ....................................................................................... 22 ............................................................................................... 22 ........................................................................................... 22 8 側(cè)向分型與抽芯機構(gòu)的設計 .......................................................... 24 基本考慮和要求 ............................................................................................... 24 ................................................... 24 抽芯機構(gòu)的概述 ............................................................................................... 24 ..................................................................... 24 斜導柱抽芯機構(gòu)的有關(guān)參數(shù)計算 ................................................................... 25 S......................................................................................................... 25 的確定 ............................................................................... 25 ....................................................................................... 26 導柱長度的計算 ....................................................................................... 27 滑塊的設計 ....................................................................................................... 27 導滑槽的設計 ................................................................................................... 28 滑塊定位裝置 ................................................................................................... 28 ............................................................................... 28 9 模具的材料 ..................................................................................... 29 塑料模具用鋼的必要條件 ............................................................................... 29