鼠標(biāo)模具設(shè)計(jì)

機(jī)械設(shè)計(jì)專業(yè)相關(guān)的畢業(yè)設(shè)計(jì)，里面有詳細(xì)的圖紙，ppt,說明書，外文翻譯。


目錄

摘要  ...........................................................2
Abstract  .......................................................3
第一章  緒論 ..................................................4
   1.1 塑料成型在工業(yè)生產(chǎn)中的重要性 ..............................4
   1.2 塑料模具的分類 ............................................7
   1.3 畢業(yè)設(shè)計(jì)應(yīng)達(dá)到的要求 ......................................7
第二章  零件的工藝分析 .....................................8
   2.1 材料的選擇 ................................................8
   2.2 產(chǎn)品工藝性與結(jié)構(gòu)分析 ......................................10
第三章  模具結(jié)構(gòu)設(shè)計(jì) ........................................12
 3.1 型腔數(shù)量以及排列方式  .....................................12
 3.2 初選注塑機(jī) ................................................13
   3.3 分型面的設(shè)計(jì) ..............................................15
   3.4 澆注系統(tǒng)與排溢系統(tǒng)的設(shè)計(jì) ..................................16
 3.5 成型零件的設(shè)計(jì) ............................................19
 3.6 推出機(jī)構(gòu)的設(shè)計(jì) ............................................23
 3.7 側(cè)向分型與抽芯機(jī)構(gòu)的設(shè)計(jì) ..................................24
 3.8 溫度調(diào)節(jié)系統(tǒng) ..............................................26
 3.9 注塑機(jī)參數(shù)的校核 ..........................................27
第四章  繪制裝配圖和零件圖 ................................28
總結(jié)  .........................................................29
參考文獻(xiàn)  ...................................................30

摘要

在一個(gè)注塑成型的過程中，影響散熱性能的是各種填料（磁鐵礦，重晶石，銅，滑石，玻璃纖維和鍶鐵氧體），調(diào)查在不同比例下對(duì)聚丙烯復(fù)合材料的冷卻反應(yīng)。在注塑成型時(shí)，熱電偶在型腔模具表面的復(fù)合紀(jì)錄氣溫。測(cè)量室溫和高溫時(shí)，從斜坡的冷卻曲線和熱擴(kuò)散的復(fù)合來估計(jì)，熱擴(kuò)散系數(shù)是一個(gè)暫時(shí)性的數(shù)據(jù)。由于后壓力，冷卻曲線顯示不同的合并路段，擴(kuò)散的綜合和擴(kuò)散的聚丙烯基體。冷卻的反應(yīng)，就看異性熱擴(kuò)散的復(fù)合材料，其原因是該路的填充材料，其注射成型工藝和互聯(lián)的灌裝機(jī)粒子。熱擴(kuò)散表明，最高值為30％的滑石粉填充聚丙烯，在最短的冷卻時(shí)間可以發(fā)現(xiàn)35％銅填充聚丙烯。系統(tǒng)性變化的熱傳遞性能的復(fù)合材料，由于不同的填充材料和填充比例，使模過程優(yōu)化，并定制熱流性能。此外，較強(qiáng)的滑石粉填充聚丙烯通過異性熱傳遞性質(zhì)，使設(shè)計(jì)的復(fù)合材料比較預(yù)定的最高熱流能力，以此來確定熱傳遞的首選方向。

關(guān)鍵詞：聚合物基復(fù)合材料 熱學(xué)性能 注塑成型  顆粒灌裝機(jī)

Abstract

The effects of thermal properties of various fillers(magnetite,barite,copper,talc,glass fibres andstrontium ferrite)in various proportionson the cooling behaviour of polypropylene matrix composites are investigated in an injection moulding process.A thermocouple in the cavity of the mould records the temperatures at the surface of the composite during injection moulding.From the slope of the cooling curves the thermal diffusivities of the composites are estimated and compared with thermal diffusivities at room temperature and elevated temperatures measured with a transient technique.The cooling curves show different merging sections affected by the after pressure,the diffusivity of the composite and the diffusivity of polypropylene matrix.The cooling behaviour depends on the anisotropic thermal diffusivity of the used composite,which is caused by the alignment of filler material due to the injection moulding process and the interconnectivity of the filler particles.The thermal diffusivity shows the highest value for 30%talc filled polypropylene,whereas the shortest cooling time was found for 35%copper filled polypropylene.The knowledge of the systematic variation of thermal transport properties of composites due to different filler material and filler proportions allows to optimize the mould process and to customize the heat flow properties.Furthermore,the strongly anisotropic thermal transport properties of talc filled polypropylene allow the design of composites with a predefined maximum heat flow capability to transport heat in a preferred direction