【正文】 .... 10 澆注系統(tǒng)凝料體積的初步估算 .......................... 10 注射機的選擇 ........................................ 10 分型面設計 ................................................11 分型面作用、形式和設計原則 .......................... 11 分型面的確定 ........................................ 12 型腔設計 ................................................. 14 型腔數(shù)目的確定 ...................................... 14 型腔排列形式的確定 .................................. 15 型腔壁厚尺寸的確定 .................................. 15 模具結(jié)構(gòu)形式的設計 ....................................... 15 模具材料的選用 ........................................... 18 第 3 章 部件的設計計算 ........................................... 19 澆注系統(tǒng)設計 ............................................. 19 澆注系統(tǒng)的設計原則 .................................. 19 IV 主流道的設計 ........................................ 19 分流道的設計 ........................................ 21 澆口設計 ............................................ 23 冷料穴與拉料桿設計 .................................. 24 成型零件工作尺寸的計算 ................................... 25 定模板及其支撐板 .................................... 25 動模板及其支撐板 .................................... 26 墊塊 ................................................ 27 導向機構(gòu) ............................................ 28 側(cè)向抽芯機構(gòu)： ...................................... 28 推出機構(gòu)的設計 .......................................... 29 推出機構(gòu)的設計原則 .................................. 29 推出機構(gòu)的分類 ...................................... 30 推出力的計算 ........................................ 30 推出零件尺寸的確定 .................................. 31 推桿位置的確定 ...................................... 32 冷卻回路設計 ............................................. 33 冷卻系統(tǒng)的設計原則 .................................. 33 冷卻水路的形式 ...................................... 33 冷卻計算（水 道的直徑 wd 與總長度 l） .................. 34 第 4 章 校核 ..................................................... 37 注射量的校核 ............................................. 37 鎖模力校核 ............................................... 37 最大注射壓力的校核 ....................................... 38 最小模厚的校核： ......................................... 38 推出零件的強度和剛度校 核 ................................. 38 冷卻水流動狀態(tài) —— Re 的校核 .............................. 39 結(jié) 論 ........................................................... 40 致 謝 ........................................................... 41 參考文獻 ......................................................... 42 V CONTENTS Abstract ...................................................................................................................... II Chapter 1 Introduction .......................................................................................... 1 Plastic mould ............................................................................................... 1 Injection mould development situation at home and abroad....................... 2 Chapter 2 Selection of scheme................................................................................4 Injects mould position and the classification ................................... 4 The form of Injection mould ............................................................. 4 The sort of Injection mould ............................................................... 5 The analysis of plastic molding process...................................................... 5 Injects mould design method and the situation ................................. 5 The analysis of plastic ....................................................................... 6 Product material formed characteristic and process.......................... 8 Injection maxhine ...................................................................................... 10 Calculation of injection quantity ..................................................... 10 The volume estimate of material gating system.............................. 10 The injection.................................................................................... 10 The selection parting surface......................................................................11 The design principles of selection parting........................................11 The selection parting surface........................................................... 12 Design of the cavity................................................................................... 14 The number of cavity ...................................................................... 14 The arrangement of cavity............................................................... 15 The arrangement of cavity............................................................... 15 The form of mould structure ..................................................................... 15 Mould materials chosen ............................................................................ 18 Chapter 3 Parts of the design and calculation ................................................... 19 Design gating system ................................................................................ 19 The design principles of design gating system................................ 19 Design of the mainstream................................................................ 19 Design of the shunting..................................................................... 21 VI Design of the runner ........................................................................ 23 Design of cold material point .......................................................... 24 Calculation of molding parts size.............................................................. 25 Calculation of the cavity ................................................................. 25 Cal