【正文】 ..................................3 發(fā)展展望 ........................................................................................................................4 設(shè)計(jì)的研究設(shè)想及研究方法 ........................................................................................5 設(shè)計(jì)的結(jié)果及意義 ........................................................................................................5第 2 章 分型面位置以及型腔數(shù)量和排列方式的確定 .........................................6 塑件的分析 ....................................................................................................................6 塑件材料的選擇 ............................................................................................................6 丙烯腈一丁二烯一苯乙烯三元共聚物(ABS) ......................................................6 聚苯乙烯(PS) ..........................................................................................................7 聚丙烯(PP) ..............................................................................................................7 注射工藝選擇 ................................................................................................................9 溫度 .........................................................................................................................9 壓力 .........................................................................................................................9 聚丙烯的用途 ..............................................................................................................10 分型面位置的確定 ......................................................................................................11 分型面的基本形式 ...............................................................................................11黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 選擇分型面的基本原則 .......................................................................................12 確定行腔數(shù)目和排列方式 ..........................................................................................12 行腔數(shù)量的確定 ...................................................................................................12 型腔排列方式的確定 ...........................................................................................12 本章小結(jié) ......................................................................................................................13第 3 章 注射機(jī)的選定 ...................................................................................................14 注射量的計(jì)算 ..............................................................................................................14 初選注射機(jī)的型號(hào)和規(guī)格 ..........................................................................................14 注射機(jī)有關(guān)工藝參數(shù)的校核 ......................................................................................14 注射量的校核 .......................................................................................................14 注射壓力的校核 ...................................................................................................16 模具閉合厚度的校核 ...........................................................................................16 注射機(jī)最大開模行程與模無關(guān)時(shí)的校核 ...........................................................16 脫模距與模板行程的校核 ...................................................................................17 本章小結(jié) ......................................................................................................................17第 4 章 澆注系統(tǒng)的設(shè)計(jì) ...............................................................................................18 澆注系統(tǒng)設(shè)計(jì)的基本要點(diǎn) ..........................................................................................18 主流道的設(shè)計(jì) ..............................................................................................................18 主流道的作用 .......................................................................................................18 主流道的設(shè)計(jì)要點(diǎn) ...............................................................................................19 澆口套結(jié)構(gòu)形式 ...................................................................................................19 澆口的設(shè)計(jì) ..................................................................................................................20 澆口的作用 ...........................................................................................................20 澆口的類型 ...........................................................................................................20 澆口設(shè)計(jì)基本要點(diǎn) ...............................................................................................20 冷料穴 ..........................................................................................................................21 排氣槽 ..........................................................................................................................21 本章小結(jié) ......................................................................................................................21第 5 章 成型零件的設(shè)計(jì)及模架的選擇 ...................................................................22黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 成型零件的結(jié)構(gòu)設(shè)計(jì) ..................................................................................................22 凹模結(jié)構(gòu)設(shè)計(jì) .......................................................................................................22 凸模(型芯)設(shè)計(jì) ...................................................................................................22 型腔型芯工作尺寸計(jì)算 ..............................................................................................23 工作尺寸的分類和規(guī)定 .......................................................................................23 塑件尺寸精度的影響因素 ...................................................................................23 成型零部件工作尺寸的計(jì)算 ...............................................................................23 模架的選擇 ..................................................................................................................25 本章小結(jié) .................................................................