【正文】 1 廣西工學(xué)院鹿山學(xué)院 畢業(yè)設(shè)計(jì)（論文） 題 目： 前軸橫梁封板件拉延模設(shè)計(jì) 系 別： 機(jī)械工程系 專業(yè)班級： 機(jī)制 083 姓 名： 陳潔 學(xué) 號(hào)： 20211274 指導(dǎo)教師： 靳龍 職 稱： 二〇一二年五月十八日 2 摘 要 塑料模具在當(dāng)今社會(huì)越來越廣泛的應(yīng)用，從電腦、手機(jī)、飲料、臺(tái)燈、水筆、水盆等方面應(yīng)用極其廣泛，可以說從我們的吃穿住行都離不開它。注射成形是成形熱塑件的主要方法，因此應(yīng)用范圍很廣。注射成形是把塑料原料放入料筒中經(jīng)過加熱熔化，使之成為高黏度的流體，用柱塞或螺桿作為加壓工具，使熔體通過噴嘴以較高壓力注入模具的型腔中，經(jīng)過冷卻、凝固階段，而后從模具中脫出，成為塑料制品。 本次的畢業(yè)設(shè)計(jì)是螺釘座的注塑模的設(shè)計(jì)，依據(jù)產(chǎn)品的數(shù)量和塑料的工藝性能確定了以三次分型面注塑模的方式進(jìn)行設(shè)計(jì)。模具的型腔采用一模四腔 直線排列，澆注系統(tǒng)采用點(diǎn)澆口成形，推出形式為司筒推出機(jī)構(gòu)完成塑件的推出。由于塑件的工藝性能要求注塑模中有冷卻系統(tǒng)，因此在模具設(shè)計(jì)中也進(jìn)行了設(shè)計(jì)。本次的設(shè)計(jì)中參考了大量的文獻(xiàn)，還在互聯(lián)網(wǎng)上查找資料，設(shè)計(jì)過程比較完整。 關(guān)鍵詞 ： 三次分型面注射模具；點(diǎn)澆口；司筒。 3 Abstract plastic mould in today39。s society more and more wide application, from the puter, mobile phone, beverage, desk lamp, liquid pen, birdbath is widely used, etc, it can be said that from our food and clothing lives can not get away from it all. Injection molding is forming hot plastic pieces of main methods, so wide applications. The plastic injection molding is ingredients in a nitrogentreated barrel with heat of melting, make it bee the high viscosity fluid, with piston or screw as pressure tool, melt through the nozzle with higher injection mould cavity pressure, after cooling, coagulation phase, and then from the mold in decent shape, bee plastic products. The graduation design is the design of injection mould of a screw, according to the number of products and plastic39。s process performance identifies three points type surface injection mold way design. The mould cavity exactly four cavity with straight line is arranged, pouring system USES some gate forming, roll out in the form of pany launched agencies plete cylinder plastic parts launch. Because plastic parts of the process performance requirements of injection mold cooling system, and therefore in the mold design and design. The design of the reference of a large number of literature, and also in the Inter for material, design process is plete. Key words: three points type surface； mould point gate； pany tube。 4 目錄 摘 要 .........................................................................................................................................2 緒論 ..............................................................................................................................................5 1 塑料制件的分析 .......................................................................................................................7 成型塑料件的工藝性分析 .................................................................................................8 成型塑件的材料分析 ........................................................................................................9 2. 塑件成型的基本過程 .............................................................................................................. 11 3 注塑設(shè)備的選擇 ....................................................................................................................... 12 估算塑件體積質(zhì)量 ........................................................................................................... 12 注塑機(jī)的選擇 ................................................................................................................. 13 4. 成型零件有關(guān)尺寸的計(jì)算 ....................................................................................................... 15 5. 澆注系統(tǒng)的設(shè)計(jì) ..................................................................................................................... 18 澆口套的選用 .................................................................................................................. 18 冷料井的設(shè)計(jì) .................................................................................................................. 19 分流道的設(shè)計(jì) .................................................................................................................. 20 分流道的布置 .................................................................................................................. 20 澆口設(shè)計(jì) ......................................................................................................................... 21 澆口位置的選擇 .............................................................................................................. 22 6 合模導(dǎo)向機(jī)構(gòu)以及定位裝置的設(shè)計(jì) ........................................................................................... 23 導(dǎo)向機(jī)構(gòu)的設(shè)計(jì) .............................................................................................................. 23 定位裝置的設(shè)計(jì) .............................................................................................................. 23 7 脫模結(jié)構(gòu)的設(shè)計(jì) ....................................................................................................................... 25 8 側(cè)向分型和抽芯機(jī)構(gòu)的設(shè)計(jì) ...................................................................................................... 25 抽拔距的計(jì)算 .................................................................................................................. 25 斜導(dǎo)柱的尺寸與安裝形式 ................................................................................................ 26 鎖緊楔形式 .................................................................................................................... 27 斜導(dǎo)柱的受力分析及強(qiáng)度計(jì)算 ........................................................................................ 27 9 排氣系統(tǒng)和溫度調(diào)節(jié)系統(tǒng)的設(shè)計(jì) ............................................................................................... 28 排氣系統(tǒng) ......................................................................................................................... 28 溫度調(diào)節(jié)系統(tǒng)的設(shè)計(jì) .........................................................................................