【正文】 山東科技大學(xué)學(xué)士學(xué)位論文 8 塑料注射成型機(jī)的已知參數(shù)如下： 對(duì)液壓系統(tǒng)的要求 ⑴合模運(yùn)動(dòng)要平 穩(wěn)，兩片模具閉合時(shí)不應(yīng)有沖擊； ⑵當(dāng)模具閉合后，合模機(jī)構(gòu)應(yīng)保持閉合壓力，防止注射時(shí)將模具沖開(kāi)。 、技術(shù)要求及已知參數(shù) 依照塑料注射式成型機(jī)的 合?！⑸洹骸鋮s→開(kāi)模→頂出的 工作 ∟→螺桿預(yù)料進(jìn)料 循環(huán)以及合模的具體的動(dòng)作：快速合模、慢速合模、鎖模。主要由模板、動(dòng)模板、合模機(jī) 合模油缸、頂出裝置等組成、 2．注射部件 它是注塑機(jī)的塑化部件。 關(guān)鍵詞 ：塑料注射成型機(jī)、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(jī)概述 ...........................................................................5 、注射成型機(jī)的工作原理 .......................................................................6 、技術(shù)要求及已知參數(shù) ...........................................................................7 對(duì)液壓系統(tǒng)的要求 .............................................................................8 液壓系統(tǒng)設(shè)計(jì)參數(shù) .............................................................................8 2. 250 克塑料注射祝液壓 系統(tǒng)設(shè)計(jì)計(jì)算 ............................................... 10 液壓執(zhí)行元件載荷力和載荷轉(zhuǎn)矩計(jì)算 ................................................ 10 ........................................................................ 11 初選系統(tǒng)工作壓力 ........................................................................... 11 計(jì)算液壓缸的主要結(jié)構(gòu)尺寸 ............................................................. 11 計(jì)算液壓馬達(dá)的排量 ........................................................................ 13 計(jì)算液壓執(zhí)行元件實(shí)際工作壓力 ...................................................... 13 計(jì)算液壓執(zhí)行元件實(shí)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(jì) .................................................................... 23 山東科技大學(xué)學(xué)士學(xué)位論文 4 ................................................................................ 29 驗(yàn)算回路中的壓力損失 .................................................................... 29 液壓系統(tǒng)發(fā)熱溫升計(jì)算 .................................................................... 31 冷卻器的計(jì)算 .................................................................................. 34 3 系統(tǒng)使用維護(hù)說(shuō)明書 .............................................................................. 36 . 注塑機(jī)溫升過(guò)高五大危害 .................................................................. 36 . 注塑機(jī) 原理和模式 ............................................................................. 37 . 注塑機(jī) 維護(hù) ......................................................................................... 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(jī)電腦面板 .................................................................................. 41 電氣部分 ......................................................................................... 41 機(jī)械部分 ........................................................................................ 42 . 油溫過(guò)高 .............................................................................................. 44 . 噪音產(chǎn)生 .............................................................................................. 44 . 保養(yǎng)簡(jiǎn)表 .............................................................................................. 45 設(shè)計(jì)分析 .......................................................................................................... 47 設(shè)計(jì)心得 .......................................................................................................... 48 致謝辭 ............................................................................................................... 49 參考書目 ..