【正文】 山東科技大學(xué)學(xué)士學(xué)位論文 1 摘 要 塑料注射成型機是一種能將塑料加熱塑化，借助推進機構(gòu)把熔化的塑料注入模具型腔內(nèi)，經(jīng)冷卻、定型后形成制品的塑料成型加工設(shè)備。它能配置不同的模具，可一次成型外形復(fù)雜的制品，是塑料機械中主要機種之一。塑料注塑成型機有很多型式，液壓式塑料成型機就是其中之一，其主要由合模機構(gòu)，注射部件，液壓傳動及電氣控制系統(tǒng)等幾部分組成，而液壓泵，液壓缸、各種液壓閥、電機、電氣元件以及控制儀表是其中不可缺少的控制元件。 塑料注射成型機以 其成型周期短 ，對各種塑料的加工適用性強，尺寸較精確以及自動化程度高等優(yōu)點，得到了廣泛應(yīng)用。 關(guān)鍵詞 ：塑料注射成型機、液壓系統(tǒng)、液壓泵、液壓缸、液壓閥 山東科技大學(xué)學(xué)士學(xué)位論文 2 ABSTRACT The plastic casts shaper is one kind of heating up the plastic the plasticizing, pours into with the aid of the advancement anization the melting plastic in the mold cavity, after cooling, the stereotypia forms the product the plastic to take shape the processing equipment. It can dispose the different mold, but time takes shape the contour plex product, is in the plastic machinery one of main aircraft types. The plastic injection takes shape already has very many forms. The hydraulic pressure type plastic injection shaper is one of them, it mainly has gathers the mold anization, injects the part, the hydraulic transmission and the electricity control system and so on several parts of positions, but the hydraulic pump, the hydraulic cylinder, each kind of hydraulic valve, the electrical machinery, the electrical part as well as the control measuring appliance are indispensable control part. The plastic injection shaper takes shape the cycle quickly by it, to each kind of plastic processing patible, the size is precise as well as the automaticity higher merit, obtained the widespread use. Key word: Plastic injection shaper, hydraulic system, hydraulic pump, hydraulic cylinder, hydraulic valv 山東科技大學(xué)學(xué)士學(xué)位論文 3 目 錄 摘 要 .................................................................................................................1 ABSTRACT......................................................................................................2 目 錄 .................................................................................................................3 1 緒 論 ............................................................................................................5 、塑料注射成型機概述 ...........................................................................5 、注射成型機的工作原理 .......................................................................6 、技術(shù)要求及已知參數(shù) ...........................................................................7 對液壓系統(tǒng)的要求 .............................................................................8 液壓系統(tǒng)設(shè)計參數(shù) .............................................................................8 2. 250 克塑料注射祝液壓 系統(tǒng)設(shè)計計算 ............................................... 10 液壓執(zhí)行元件載荷力和載荷轉(zhuǎn)矩計算 ................................................ 10 ........................................................................ 11 初選系統(tǒng)工作壓力 ........................................................................... 11 計算液壓缸的主要結(jié)構(gòu)尺寸 ............................................................. 11 計算液壓馬達的排量 ........................................................................ 13 計算液壓執(zhí)行元件實際工作壓力 ...................................................... 13 計算液壓執(zhí)行元件實際所需流量 ...................................................... 13 ........................................................ 14 制定系統(tǒng)方案 .................................................................................. 14 擬定液壓系統(tǒng)圖 ............................................................................... 15 液壓元件的選擇與設(shè)計 .................................................................... 23 山東科技大學(xué)學(xué)士學(xué)位論文 4 ................................................................................ 29 驗算回路中的壓力損失 .................................................................... 29 液壓系統(tǒng)發(fā)熱溫升計算 .................................................................... 31 冷卻器的計算 .................................................................................. 34 3 系統(tǒng)使用維護說明書 .............................................................................. 36 . 注塑機溫升過高五大危害 .................................................................. 36 . 注塑機 原理和模式 ............................................................................. 37 . 注塑機 維護 ......................................................................................... 38 . 預(yù)防性維修保養(yǎng) .................................................................................. 39 液壓油量 ......................................................................................... 39 液壓油溫度 ...................................................................................... 39 液壓油油質(zhì) ...................................................................................... 40 濾油器清洗 ..................................................................................... 40 冷卻器清洗 ...................................................................................... 40 . 注塑機電腦面板 .................................................................................. 41 電氣部分 ......................................................................................... 41 機械部分 ........................................................................................ 42 . 油溫過高 .............................................................................................. 44 . 噪音產(chǎn)生 .............................................................................................. 44 . 保養(yǎng)簡表 .............................................................................................. 45 設(shè)計分析 .......................................................................................................... 47 設(shè)計心得 .......................................................................................................... 48 致謝辭 ............................................................................................................... 49 參考書目 ...................................