電風(fēng)扇上蓋注塑成型模具設(shè)計(jì)

電風(fēng)扇上蓋注塑成型模具設(shè)計(jì),電風(fēng)扇,注塑,成型,模具設(shè)計(jì) 摘 要 摘要：塑料注塑成型可以制作大量具有高精度和復(fù)雜型腔形狀的制件。通過用注塑模 CAE軟件 MOLDFLOW對(duì)塑件進(jìn)行模流分析，選擇聚丙烯的成型工藝參數(shù) ，設(shè)計(jì)了一模一腔的注射模具。按聚丙烯的平均收縮率設(shè)計(jì)計(jì)算模具成型尺寸。分析了電風(fēng)扇上蓋的結(jié)構(gòu)工藝特點(diǎn),介紹了電風(fēng)扇上蓋注射模結(jié)構(gòu)及模具的工作過程, 介紹了模具設(shè)計(jì)方案、工作原理, 闡述了成型部件、澆注系統(tǒng)凝料雙層結(jié)構(gòu)、頂出機(jī)構(gòu)的設(shè)計(jì)特點(diǎn)。同時(shí)介紹了成型零件的加工制造的過程。 關(guān)鍵字：注塑模；MOLDFLOW分析；制造 Abstract ：The plastic injection molding is known to be the most effective process for producing discrete plastic parts of complex shape to the highest precision at a low cost.An injection die with a mold cavity was designed though using the injection mold CAE software MOLDFLOW to simulate plastic flow and choosing the molding parameters of polypropylene. The molding size was designed according to the average shrinkage ratio of polypropylene.Analyzing on the structural character of cover of fan, the structure of injection mold and the mold working process are introduced. The design specialities of molding parts，the double deck structure of concretionary plastic for the gating system and the ejection mechanism were presented as well.Meanwhile,manufacturing of the molding size were introduced. Keyword：Injection mould;Analyzing of MOLDFLOW;Manufacturing 目 錄 中文摘要 英文摘要 1 塑料的工藝性分析……………………………………………………… 4 1.1 塑件的原材料分析……………………………………………… 4 1.2 塑件的尺寸精度分析…………………………………………… 4 1.3 塑件的表面質(zhì)量分析…………………………………………… 4 1.4 塑件結(jié)構(gòu)的工藝性分析………………………………………… 4 2 注塑過程的分析及確定成型設(shè)備選擇………………………………… 5 2.1 注塑過程的分析………………………………………………… 5 2.2 選用注塑機(jī)……………………………………………………… 7 3 注射模的結(jié)構(gòu)設(shè)計(jì)…………………………………………………… 8 3.1 分型面的選擇…………………………………………………… 8 3.2 澆注系統(tǒng)的設(shè)計(jì)………………………………………………… 9 3.2.1 主流道設(shè)計(jì)……………………………………………… 10 3.2.2 分流道的設(shè)計(jì)…………………………………………… 11 3.2.3 澆口設(shè)計(jì)………………………………………………… 11 3.3 成型零件的設(shè)計(jì)……………………………………………… 11 3.3.1 凹模、凸模和型芯的基本尺寸的確定………………… 12 3.3.2 凹模壁厚確定…………………………………………… 13 3.3.3 底板厚度確定…………………………………………… 14 3.3.4 成型零件的位置布置及其三維造型…………………… 15 3.4 導(dǎo)向機(jī)構(gòu)的設(shè)計(jì)………………………………………………… 18 3.5 推出部分的設(shè)計(jì)………………………………………………… 18 3.5.1 脫模力的計(jì)算…………………………………………… 18 3.5.2 推件板的厚度計(jì)算……………………………………… 19 3.6 側(cè)向分型與抽芯機(jī)構(gòu)的設(shè)計(jì)………………………………… 19 3.7 冷卻部分的設(shè)計(jì)………………………………………………… 21 3.8 標(biāo)準(zhǔn)模架的選用………………………………………………… 22 3.9 注塑機(jī)的校核…………………………………………………… 22 4 標(biāo)準(zhǔn)零件的加工圖和非標(biāo)準(zhǔn)零件的加工工藝規(guī)劃…………………… 22 5 小結(jié)……………………………………………………………………… 26 參考文獻(xiàn)…………………………………………………………………… 26 2