【正文】 .......... 1 1 緒論 ........................................................................................................................................ 2 塑料及塑料工業(yè)的發(fā)展 .................................................................................................... 2 塑料成型在工業(yè)生產(chǎn)中的重要性 ...................................................................................... 2 塑料成型技術(shù)的發(fā)展趨勢(shì) ................................................................................................ 3 2 塑件的工藝性分析 ................................................................................................................... 3 ............................................................................................................ 3 概述 ....................................................................................................................... 4 使用工藝 ................................................................................................................ 5 ABS 塑料的干燥 ..................................................................................................... 5 注射溫度 ................................................................................................................ 6 注射 壓力 ................................................................................................................ 6 注射速度 ................................................................................................................ 6 模具溫度 ................................................................................................................ 6 料量控制 ................................................................................................................ 6 塑件的結(jié)構(gòu)，尺寸精度以及表面質(zhì)量分析 ........................................................................ 7 結(jié)構(gòu)分析 ................................................................................................................ 7 尺寸精度分析 ......................................................................................................... 7 表面質(zhì)量分析 ......................................................................................................... 8 脫模斜度的確定 ...................................................................................................... 8 3 計(jì)算塑件體積以及選定注射機(jī) ................................................................................................. 9 計(jì)算塑件 體積 .................................................................................................................. 9 型腔數(shù)的確定 .................................................................................................................. 9 注射機(jī)有關(guān)工藝參數(shù)的計(jì)算 ............................................................................................10 注射機(jī)注射容量 .....................................................................................................10 注射機(jī)額定鎖模力 .................................................................................................10 注射機(jī)最大開模行程 ..............................................................................................10 注射機(jī)的選擇 .................................................................................................................10 4 注射模的結(jié)構(gòu)設(shè)計(jì) .................................................................................................................. 11 .................................................................................................................. 11 ..............................................................................................................12 澆注系統(tǒng)的設(shè)計(jì) .............................................................................................................13 主流道的設(shè)計(jì) ........................................................................................................13 分流道的設(shè)計(jì) ........................................................................................................14 澆口的設(shè)計(jì) ............................................................................................................14 澆注系統(tǒng)的平衡 .....................................................................................................15 冷料穴的設(shè)計(jì) ........................................................................................................16 排氣系統(tǒng)的設(shè)計(jì) .............................................................................................................17 冷卻系統(tǒng)的設(shè)計(jì) .............................................................................................................17 成型零件的設(shè)計(jì) .............................................................................................................19 抽芯機(jī)構(gòu)的設(shè)計(jì) .............................................................................................................19 5 成型零件設(shè)計(jì) .........................................................................................................................22 成型零件的結(jié)構(gòu)設(shè)計(jì) ......................................................................................................22 計(jì)算成型零部件工作尺寸需要考慮的因素 .......................................................................23 XXXXX II 成型零部件的尺寸計(jì)算 ...................................................................................................25 6 注射機(jī)的參數(shù)校核 ..................................................................................................................28 7 模架的設(shè)計(jì) ............................................................................................................................28 8 合模導(dǎo)向機(jī)構(gòu)的設(shè)計(jì) ..............................................................................................................32 導(dǎo)柱的設(shè)計(jì) ....................................................................................................................32 導(dǎo)套的設(shè)計(jì) ....................................................................................................................32 9