【正文】 ...................... 12 分流道設(shè)計 ............................................................................................................. 13 分流道 設(shè)計原則 .............................................................................................. 13 分流道的布置形式 .......................................................................................... 13 分流道相應(yīng)參數(shù)的確定 .................................................................................. 14 校核剪切速率 .................................................................................................. 14 澆口的設(shè)計 ................................................................................................................ 15 澆口形式及尺寸確定 ...................................................................................... 15 側(cè)澆口剪切速率的校核 .................................................................................. 15 校核主流道的剪切速率 ............................................................................................ 16 冷料穴的設(shè)計與計算 ................................................................................................ 17 溫度調(diào)節(jié)系統(tǒng) ............................................................................................................ 17 排 氣系統(tǒng) .................................................................................................................... 17 第五章 成型零件的結(jié)構(gòu)設(shè)計及計算 .......................................................................... 18 成型零件的結(jié)構(gòu)設(shè)計 ............................................................................................. 18 型腔的結(jié)構(gòu)設(shè)計 .............................................................................................. 18 型芯的結(jié)構(gòu)設(shè)計 .............................................................................................. 18 成型零件材料的選用 ................................................................................................ 18 成型零件工作尺寸的計算 ........................................................................................ 18 型腔尺寸計算 .................................................................................................. 18 側(cè)抽芯凸模尺寸計算 ...................................................................................... 19 第六章 模架組合的選擇 ................................................................................................. 21 決定模板尺寸的因素 ................................................................................................ 21 模架的選擇 ................................................................................................................ 21 第七章 合模導(dǎo)向機(jī)構(gòu)的設(shè)計 ........................................................................................ 22 第八章 脫模推出機(jī)構(gòu)的設(shè)計 ........................................................................................ 24 推出方式的確定 ........................................................................................................ 24 推出位置、推桿數(shù)量和斷面形狀的設(shè)計 ................................................................ 24 推桿復(fù)位裝置 ............................................................................................................ 24 第九章 側(cè)向分型與側(cè)抽芯機(jī)構(gòu)的設(shè)計 ..................................................................... 25 抽芯距與抽芯力的計算 ............................................................................................ 25 抽芯距的計算 .................................................................................................. 25 抽芯力的計算 .................................................................................................. 25 斜導(dǎo)柱的側(cè)向分型與側(cè)抽芯機(jī)構(gòu)的設(shè)計要點(diǎn) ................................................................... 26 斜導(dǎo)柱的設(shè)計 .................................................................................................. 26 滑塊的設(shè)計 ...................................................................................................... 28 楔緊塊的設(shè)計 .................................................................................................. 29 第十章 模具總裝配圖的繪制 ........................................................................................ 31 參考文獻(xiàn) ................................................................................................................................ 32 致 謝 .................................................................................................................................. 34 I 摘 要： 塑料工業(yè)是當(dāng)今世界上增長最快的工業(yè)門類之一，而注塑模具是其中發(fā)展較快的種類，因此，研究注塑模具對了解塑料產(chǎn)品的生產(chǎn)過程和提高產(chǎn)品質(zhì)量有很大意義。 本設(shè)計介紹了注射成型的基本原理，特別是單分型面注射模具的結(jié)構(gòu)與工作原理，對注塑產(chǎn)品提出了基本的設(shè)計原則；詳細(xì)介紹了冷流道注射模具澆注系統(tǒng)、溫度調(diào)節(jié)系統(tǒng)和頂出系統(tǒng)的設(shè)計過程。彎管接頭具有兩個方向的側(cè)向抽芯。本設(shè)計分析了彎管 接頭的成型工藝，確定了工藝方案，介紹了模具結(jié)構(gòu)和主要模具零部件的設(shè)計，分析了本模具結(jié)構(gòu)及產(chǎn)品質(zhì)量上的可行性及可靠性。 關(guān)鍵詞 ： 彎管接頭；注射模；成型工藝；側(cè)向抽芯 II Design of Injection Mould for Elbow Joint Abstract: Now The plastic industry is one of the quickest developing industry classes in the world, and the injection mould is one of the developing type. Therefore, there is great significance to study the injection mould to understand that the plastic of production process and improve the product quality. The basic principle of injection molding, specially the operating principle and the structure of the singlepartingsurface injection mould is introduced. The design of the runner system, temperature control system and the ejection is introduced in detail. The technology for forming the elbow joint is analyzed and a better technics is decided .The elbow joint has two side corepulling in different directions. The structure of the mould and the designing of the main parts are introduced. The feasibility and reliability in mould structure are discussed to guarantee the quality of the product. Keywords: elbow joint。 injection mould。 forming process。 side corepulling 1 第一章 緒論 塑料成型在工業(yè)生產(chǎn)中的重要性 塑料及塑料工業(yè)的發(fā)展 塑料是以樹脂為主要成分的高分子有機(jī)化合物，簡稱高聚物。塑料其余成分包括增塑劑、穩(wěn)定劑、增強(qiáng)劑、固化劑、填料及其他配合劑。 塑料制件在工業(yè)中應(yīng)用日趨普遍，這是由于它的一系列特殊的有點(diǎn)決定的。塑料密度小、質(zhì)量輕，比強(qiáng)度高，絕緣性能好，介電損耗低，是電子工業(yè)不可缺少的原材