塑料擠出機畢業(yè)設(shè)計-資料下載頁
2024-11-23 16:35本頁面
【導(dǎo)讀】與其配套的后續(xù)設(shè)備塑料擠出成型機則稱為輔機。塑料擠出機（主機）可以與管材、薄膜、捧材、單絲、扁絲、打包。配，組成各種塑料擠出成型生產(chǎn)線，生產(chǎn)各種塑料制品。成型機械無論現(xiàn)在或?qū)恚际撬芰霞庸ば袠I(yè)中得到廣泛應(yīng)用的機種之一。所有下載了本文的注意：本論文附有CAD圖紙和完整版word版說明書，凡下。一個電機帶動的。50錐雙的功率約為20kW,65的約為。前以單螺桿擠出機應(yīng)用最為廣泛，送能力較大、擠出量比較穩(wěn)定、物料在機筒內(nèi)停留長,混合均勻。切速率小、物料不易分解、混煉塑化性能好、粉料直接成型等特點，溫度自控，真空排氣等裝置。適用于管、板、異形材等制品的生產(chǎn)。目前德國生產(chǎn)的大型造粒用單螺桿擠出。機，螺桿直徑達(dá)700mm，產(chǎn)量為36t/h。單螺桿擠出機發(fā)展的主要標(biāo)志在于其關(guān)鍵零件——螺桿的發(fā)展。料和塑料制品不斷的發(fā)展，還會涌現(xiàn)出更有特點的新型螺桿和特殊單螺桿擠出機。從總體而言，單螺桿擠出機向著高速、高效、專用化方向發(fā)展。
【正文】 民眾普遍認(rèn)為用再生塑料制成的產(chǎn)品是劣質(zhì)產(chǎn)品；國家缺乏對廢棄塑料回收利用行業(yè)和再加工企業(yè)扶持的具體政策；現(xiàn)實情況是回收加工企業(yè)不僅得不到國家政策的支持，反而受到很多限制。 其二，行業(yè)協(xié)會剛成立不久，對行業(yè)的協(xié)調(diào)規(guī)劃作用還未充分發(fā)揮出來。中國塑料工業(yè)協(xié)會再生塑料專業(yè)委員會 2020 年才成立，目前還缺少有專業(yè)經(jīng)驗的專家、學(xué)者為其規(guī)劃發(fā)展，行業(yè)協(xié)會的作用還沒有充分發(fā)揮出來。 其三，原材料價格飛漲。由于國內(nèi)廢 PET 回收處理能 力及國內(nèi)廢 PET 瓶源無法滿足生產(chǎn)能力的過度擴張，原料已變成該行業(yè)發(fā)展的一個瓶頸。 21 中英文翻譯 擠出機市場由于應(yīng)用市場的不斷拓展和技術(shù)上的突破，總體上還能保持小幅上升的勢頭，但國產(chǎn)擠出機市場價格大幅下跌已難以避免，粗制濫造和價格戰(zhàn)已經(jīng)影響了國內(nèi)塑機的整體形象和市場競爭力，也阻礙了塑料加工業(yè)的發(fā)展。 擠出機主機和生產(chǎn)線今后的市場將向技術(shù)含量高、價格降低的方向發(fā)展。國產(chǎn)主機現(xiàn)在基本上以錐形雙螺桿擠出機和單螺桿塑料擠出機為主，技術(shù)較成熟，市場銷量亦最大，但這類產(chǎn)品的通用規(guī)格已供大于求，只 能維持市場頂峰期的 50%～ 60%左右。主機今后的重點在于發(fā)展平行異向雙螺桿擠出機，適用于大擠出量的成型擠出。平行同向雙螺桿擠出機要向第六代、擋代高速、大長徑比如向發(fā)展。單螺桿擠出機的發(fā)展方向則是大直徑、大長徑比、排氣順暢。 擠出機組（生產(chǎn)線）要 (zu _sheng chan xian _yao)求驅(qū)動電動機變速、起動轉(zhuǎn)矩大、低速轉(zhuǎn)矩大、恒轉(zhuǎn)矩調(diào)速、轉(zhuǎn)速穩(wěn)定，特別是在生產(chǎn)線中多臺電動機要同步允許才能保證制品質(zhì)量和正常生產(chǎn)，以往大多數(shù)采用直流傳動與電磁調(diào)速技術(shù)控制，但直流電機的電刷每月就要更換一次，在多粉塵或腐 蝕性環(huán)境中直流電機需要經(jīng)常清洗，有時還需要通入潔凈的冷卻空氣，維修工作復(fù)雜，工作效率低，近幾年開始采用交流變頻器，它在調(diào)速位、動態(tài)響應(yīng)、智能控制功率因數(shù)、工作效率等方面都是以往調(diào)速方法無法比擬的，現(xiàn)已被公認(rèn)。相關(guān)產(chǎn)品介紹給大家：塑料擠出機造粒機系列塑料機械造粒機。 extruder market because of application the expanding of the marketing and technical breakthrough, on the whole, still can maintain the momentum, but nudged homemade extruder market price has been difficult to avoid a sharp drop in the price war, tickytacky and has influenced the overall image and domestic machinery market petitive power, also hindered the development of plastic processing industry. Extruder host and production line the future market will provide high technical content, lower price direction. Domestic host now basically with conical twinscrew extruder and singlescrew plastic extruder primarily, technology are more mature, market sales the biggest, but also the general specification this type of products already oversupply, can maintain market 22 DingFengQi 50% ~ 60% of the left. Host future focus on the development to parallel vision twin screw extruder, suitable for big extrusion amount of molding extrusion. Whetherisolated twinscrew extruder parallel to the sixth generation, confidential generation highspeed, block with large length to diameter for example to development. Single screw extruder is the development direction of large diameter, with large length to diameter ratio, exhaust smoothly. Extruder system (lines) to _sheng zu chan xian (_yao) for driving motor speed, high starting torque and low torque big, constant torque motor speed, speed stability, especially in product line to synchronize several motors can guarantee the products quality and allowing normal production, unlike most adopts dc transmission and electromagic speed technology control, but dc motor brush monthly should be replaced once, in many dust or corrosive environment dc motor need regular cleaning, sometimes need access to clean cooling air, repair work is plex and low working efficiency, adopt ac inverter in recent years, it began in speed bits, dynamic response, intelligent control power factor, work efficiency is ever the inparable control method, has been recognized. Related products introduced to all: plastic extruder granulator series plastic machinery granulator 23 致謝 參考文獻(xiàn) [1]普朗 特 .流體力學(xué)概論 .（中譯本）郭永懷等譯，科學(xué)出版社， 1987 [2]Sissom, L. E., Pitts, D. R., 《 Elements of Transport Phenomena, McGraw Hill, Inc., 1972 [3]McCabe, W. L., and Smith, J. C.《 Unit operaions of Chemical Engineering》 24 4th ed. McGrawHill, Inc., 1985 [4] J. O. 欣 .湍流（中譯本）黃永念等譯，科學(xué)出 版社， 1987 [5]王凱 .非牛頓流體的流動 ,混合和傳熱 .浙江大學(xué)出版社， 1988 [6]時鈞 .化學(xué)工程手冊 .第二版上卷，化學(xué)工業(yè)出版社， 1996 [7]Warring R. H.,《 Handbook of valves, piping and pipelines》 Trade amp。 Technical press, LTD 1982 [8]戴干策 ,陳敏恒 .化工流體力學(xué) .化學(xué)工業(yè)出版社， 1988
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