外文翻譯-一體化茶葉真空包裝機設計

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有CAD圖紙和說明書,領取加Q 197216396 或 11970985 畢業(yè)論文外文翻譯 畢業(yè)設計（論文）題目 一體化茶葉真空包裝機設計 翻譯題目 一體化茶葉真空包裝機設計 學 院 工學院 專 業(yè) 機械制造及其自動化 姓 名 班 級 學 號 指導教師  一體化茶葉真空包裝機設計 Direct mechanical energy measures of hammer mill comminution of switchgrass,wheat straw, and corn stover and analysis of their particle size distributions Abstract: With the development of economy and the improvement of peoples living standards, the rapid development of tea in China, in this case to give us tea packing machine a self - show opportunity. In the face of fiery summer, tea sales in full swing, and the attendant is faced with the problem of storage of tea, tea packaging is increasingly important. Over time, those who are not conducive to the storage of tea packaging will be eliminated by the market, and tea vacuum packaging machine as a good helper to help tea to solve their problems. Keywords: Tea vacuum packaging machine; development; structure; principle; 1. Introduction Tea vacuum packaging machine with plastic composite film or plastic aluminum foil composite film as packing material, specially designed for tea packaging and design, the other small package can also carry out vacuum packaging, effectively prevent the goods from corruption, to ensure the quality, freshness, taste, color retention, extend the storage period of the product. Tea vacuum packing machine with plastic composite film or aluminum foil plastic composite film for packaging materials, all kinds of tea, black tea, green tea, oolong tea, Puer tea, Dahongpao, instruments and medicines, food and grain. Fruit. Pickles, preserved fruit, aquatic products, native products, chemical raw materials, electronic components and protection products and so on. Whether it is a solid, powder, paste or liquid can be of vacuum heat sealing packaging. Because a high degree of vacuum in the bag, which can effectively prevent lipid oxidation and aerobic bacteria to multiply and cause product spoilage and deterioration of to guarantee, preservation time and flavor, color retention, to extend the period of storage of the products (commodities) and also on some soft object, after vacuum packaging shrink packaging volume, easy transportation and storage. 2. Research status and development trend of tea vacuum packaging machine 2.1 research status 1, sales of packaging materials Our country mainly uses the plastic woven bag, the compound plastic bag as the packing container, but these bags are in the transportation, loading and unloading, the retail and so on many questions need to solve. Use of plastic woven bags to the packaging of tea, the phenomenon of waste is more serious, the general can only use 1-2 times, the relative cost is relatively high. And the packaging is simple, Kaifeng difficult to seal, not conducive to the preservation of a longer period of time, pest, mildew phenomenon is serious. Packaging materials, poor moisture barrier, easy oxidation of moldy tea. Plastic compound bag is made of composite packaging material with high barrier property, in a certain extent, can solve the tea mold, insects, fresh problems, but is difficult to deal with, is not easy to degrade due to using is restricted by certain. 2 domestic sales of packaging 2 kinds of packaging technology A common pack, using polypropylene plastic woven bag of tea packaging, packaging process did not exert any preservation technology, the packaging of tea mothproof, mildewproof and freshness keeping effect of difference; Another kind of vacuum packaging technology for packaging, vacuum packaging technology for tea storage has good preservation effect, but due to the shape of tea itself and the choice of vacuum degree is not appropriate, the vacuum packaging choice of vacuum degree is generally between -0.07 ~ -0.09kPa, as long as the vacuum degree in this range, the factory are qualified products. Because of the vacuum degree is bigger, the packaging material tightly wrapped tea, because tea at both ends of a sharp, packaging bag can easily be punctured rice and formation of pinholes, packing bag will leak, resulting in vacuum package failure. The test shows that the vacuum degree of the vacuum is -0.09MPa of the tea packing bag, still placed, not stacking, in 20 days, the packing bag of the broken rate is 16%, so high vacuum degree will inevitably lead to high rate of broken bag. In the distribution process, the friction, impact and drop of the bags are also easy to break the bag. According to the statistical vacuum packaging in the circulation process of the broken bag rate reached 30%. Because of the vacuum packing problem caused by the waste of tea, to consumers and businesses have brought the loss and trouble. So it is good for the tea to be combined with the current environment, so as to achieve good results. 2.2 development trend Vacuum packaging technology originated in 1940s. Since the successful application of polyester, polyethylene plastic film in 1950, the vacuum packaging machine has been developed rapidly, and its technical development trend is mainly reflected in the high productivity, automation, multi function, the composition of production lines, the use of new technologies, these five aspects. High productivity. The productivity of the vacuum packaging machine has been developed from 10 parts per minute, the production rate of thermal forming, filling and sealing machine can reach 500 pieces per minute. Adopt related new technology. On the packaging method, the packaging is replaced by vacuum packaging, which is closely integrated with the three aspects of packaging, packaging materials and packaging machine. It is used in the control technology, and the technology of computer and micro electronics technology. The advanced device is installed on the vacuum packaging machine. Production automation: the automation of the vacuum packaging machine not only improves the production efficiency, but also has the advantages of safety and health. Japan, a company of the production of rotary vacuum chamber type packaging machine, is a very high degree of automation, multi - station packaging machine. The machine has 2 rotary table, filling and pumping vacuum, filling the turntable with 6 positions, the filling material, the injection, the injection of the package to the vacuum rotary table; the vacuum rotary table has 12 positions (vacuum chamber), and the production efficiency can reach 40 bags / min, mainly used for packaging of soft canned food. With production line: when the function is more and more, the function of all the functions on a single machine will make the structure becomes very complex, operation and maintenance is not convenient. By this time, the function of the machine can be matched with different efficiency and the efficiency of the machine can be more complete. As the development of a company in France fish vacuum packaging production line, textile vacuum packaging system. Other models belong to this type. China Industry Fair will science and technology forum for 11 consecutive years the focus criteria, this year the experts and entrepreneurs around the "green packaging" main proposition to packaging materials, transportation, hazardous substances provisions of standard topics in-depth discussion. National Development and Reform Commission deputy inspector Zhao Penggao introduced, Chinas large and medium cities of packaging waste volume accounted for nearly 1/2 of the total municipal solid waste, the weight of 1/3, the implementation of green packaging, packaging material to reduce pollution has become a major and pressing issues. "Standard content is not reasonable and perfect; the standard is not enough coordination, the lack of systematic; heavy form, can be operated". The World Packaging Organization Asian Packaging Center President Kim Xiangzuo "China in the future to be become truly global packaging industry center, promote the development of industrial clusters and technological progress, must improve the China in the world packaging industry discourse and rule making power. The seminar delivered an industry recognized information, the status quo of Chinas packaging industry standard, has been unable to meet the actual needs of the industrys rapid development, and realize the packaging by "big" to "strong", it is urgent to improve the standardization level of the whole industry. Gold Xiangzuo revealed in our country is in the planning and construction of world packaging industry center, the construction of the world packet based, development of civil military integration, science and technology research and development, trade and logistics, cultural and creative, packaging equipment, packaging materials, agricultural products processing, packaging etc. key base; the implementation of WTO Research Institute, WPO University, high-end packaging products, advanced packaging equipment, new packaging materials such as 18 key projects, which led by the world packaging center group world packaging industry center "will joint enterprises, state-owned enterprises and foreign enterprises joint investment, facing the global investment, is expected to the scale of investment of more than 120 billion yuan.  摘要: 隨著經(jīng)濟的發(fā)展，以及人們生活水平的提高，我國茶葉發(fā)展迅猛，在這種情況下給我們茶葉包裝機一個自我發(fā)展的機會。面對火熱的夏天，茶葉的銷量如火如荼，而隨之而來卻面臨著茶葉存放問題，茶葉的包裝越發(fā)顯得重要。隨著時間的推移，那些不利于茶葉存放的包裝必將被市場所淘汰，而茶葉真空包裝機作為茶葉的好幫手，幫助茶葉解決其存放問題。 關(guān)鍵詞: 茶葉真空包裝機；發(fā)展；結(jié)構(gòu)；原理； 1 前言 茶葉真空包裝機以塑料復合薄膜或塑料鋁箔復合薄膜為包裝材料,專為茶葉成型包裝而設計的,對其它小型包裝物亦能進行真空包裝;有效地防止物品腐敗變質(zhì),達到保質(zhì)、保鮮、保味、保色的功能,延長產(chǎn)品的儲存期限。 茶葉真空包裝機以塑料復合薄膜或塑料鋁箔復合膜為包裝材料,對各種茶葉，紅茶、綠茶、鐵觀音、普洱、大紅袍等，儀器藥品,糧食.果品.醬菜,果脯,水產(chǎn)品,土特產(chǎn),化工原料,電子元件及軍用品等。不論是固體,粉狀,糊狀或液體均可進行真空熱封包裝.由于袋內(nèi)真空度高,可有效的防止脂類品氧化和好氧性細菌繁殖而引起的物品腐敗和變質(zhì),達到保質(zhì),保鮮,保味,保色的功能,延長產(chǎn)品(商品)的儲存期限,同時對某些松軟的物品,經(jīng)過真空包裝后縮小包裝體積,便于運輸和儲存。 2 茶葉真空包裝機的研究現(xiàn)狀與發(fā)展趨勢 2.1 研究現(xiàn)狀 1、銷售包裝的包裝材料方面 我國主要用塑料編織袋、復合塑料袋作為包裝容器，而這些包裝袋在運輸、裝卸、零售等環(huán)節(jié)存在諸多問題需要解決。使用塑料編織袋來包裝茶葉，浪費的現(xiàn)象比較嚴重，一般只能用1-2次，相對成本較高。且包裝方式簡單，開封后難以再封，不利于較長時間的保存，蟲害、霉變現(xiàn)象較為嚴重。包裝材料防潮性差、阻隔性差，茶葉易氧化霉變。塑料復合袋是由高阻隔性包裝材料復合而成，在一定程度上可以解決茶葉的防霉、防蟲、保鮮問題，但后處理較難，由于不易降解，使用也受到一定的制約。 2、國內(nèi)銷售包裝的兩種包裝技術(shù) 一種為普通包裝，利用聚丙烯塑料編織袋對茶葉進行包裝，包裝過程中不施加任何保鮮技術(shù)，這種包裝對茶葉的防蟲、防霉及保鮮的效果差； 另外一種用真空包裝技術(shù)對包裝袋進行抽真空，真空包裝技術(shù)對茶葉的儲存有較好的保鮮作用，但由于茶葉自身的形狀以及真空度的選擇不合適，目前茶葉真空包裝選用的真空度一般在-0．07～-0．09kPa之間，只要真空度在這個范圍內(nèi)，出廠都為合格的產(chǎn)品。由于真空度較大，包裝材料緊緊包裹茶葉，由于茶葉兩端較尖，包裝袋很容易被米粒扎破，形成針孔，這樣包裝袋就會漏氣，造成真空包裝失效。有試驗表明，抽氣真空度為-0．09MPa的茶葉包裝袋，靜止放置，不堆垛，在20天之內(nèi)包裝袋的破漏率為16％，所以高真空度必然造成高破袋率。另外包裝袋在流通過程中袋與袋之間的摩擦、碰撞和跌落也很容易造成破袋。據(jù)統(tǒng)計真空包裝在流通過程中的破袋率達到30％。由于真空包裝的問題造成了茶葉的浪費，給消費者和企業(yè)都帶來了損失和麻煩。所以在對茶葉進行保鮮包裝的同時要和流通環(huán)境結(jié)合起來，這樣才能取得良好的效果。 2.2 發(fā)展趨勢 真空包裝技術(shù)起源于20世紀40年代。自1950年聚酯、聚乙烯塑料薄膜成功地應用于商品包裝以來，真空包裝機便得到迅速的發(fā)展，其技術(shù)發(fā)展趨勢主要體現(xiàn)在高生產(chǎn)率、自動化、單機多功能、組成生產(chǎn)線、采用相關(guān)新技術(shù)這五個方面。 高生產(chǎn)率。真空包裝機的生產(chǎn)率已從每分鐘數(shù)件發(fā)展到數(shù)10件，熱成型－充填－封口機的生產(chǎn)率可達500件/分鐘以上。 采用相關(guān)新技術(shù)。在包裝方法上大量采用充氣包裝取代真空包裝，將充氣成分、包裝材料與充氣包裝機三方面的研究緊密結(jié)合起來；在控制技術(shù)上，更多地應用計算機技術(shù)和微電子技術(shù)；在封口方面應用熱管和冷封口技術(shù)，也可以將先進的裝置直接安裝在真空包裝機上，如裝上計算機控制的粗粒物料高精度組合秤；在旋轉(zhuǎn)或真空包裝機上，應用先進高速的圓弧面凸輪分度機械等。 生產(chǎn)自動化：真空包裝機的自動化不僅提高了生產(chǎn)效率，而且具有安全衛(wèi)生的優(yōu)點。日本某公司生產(chǎn)的旋轉(zhuǎn)真空室式包裝機，是一種自動化程度相當高的多工位包裝機。該機有充填和抽真空2個轉(zhuǎn)臺，充填轉(zhuǎn)臺有6個工位，完成供袋、投料、注液預封口，并將包裝件送至抽真空轉(zhuǎn)臺；抽真空轉(zhuǎn)臺有12個工位（真空室），完成抽真空和封口、成品輸出等工序，生產(chǎn)效率可達40袋／分，主要用于包裝軟罐頭類食品。 組配生產(chǎn)線：當需要的功能越來越多時，將所有的功能集中在一個單機上會使結(jié)構(gòu)變得非常復雜，操作維修也不方便。這時可把功能不同、效率相匹配的幾種機器組合成功能較齊全的生產(chǎn)線，來完成更為復雜的包裝工序。如法國某公司研制的鮮魚真空包裝生產(chǎn)線，紡織真空包裝系統(tǒng)等機型均屬于這一型。中國工博會科技論壇連續(xù)11年聚焦標準化，今年與會專家、實業(yè)家圍繞著“綠色包裝”主命題，就涉及包裝材料、運輸、有害物質(zhì)規(guī)定的標準等話題展開深入探討。國家發(fā)改委副巡視員趙鵬高介紹，目前我國大中城市的包裝廢棄物體積占城市固體廢棄物全部的近二分之一、重量的三分之一，推行綠色包裝、減少包裝物帶來的污染已成為重大而緊迫的課題?！皹藴蕛?nèi)容不盡合理和完善；標準之間不夠協(xié)調(diào)、缺乏系統(tǒng)性；重形式、可操作性差”。 世界包裝組織亞洲包裝中心總裁金祥佐認為，“中國未來要成為真正的全球包裝產(chǎn)業(yè)中心，推動產(chǎn)業(yè)集群式發(fā)展和技術(shù)進步，必須要提高中國在世界包裝界的話語權(quán)和規(guī)則制定權(quán)”。研討會傳遞出一個業(yè)界公認的信息，中國包裝業(yè)標準化水平的現(xiàn)狀，已不能適應行業(yè)產(chǎn)業(yè)快速發(fā)展的實際需求，而實現(xiàn)包裝由“大”到“強”，亟需提升全行業(yè)的標準化水平。金祥佐透露，我國正規(guī)劃建設“世界包裝產(chǎn)業(yè)中心”，建設世包總部、軍民融合發(fā)展、科教研發(fā)、商貿(mào)物流、文化創(chuàng)意、包裝裝備、包裝新材料、農(nóng)產(chǎn)品加工包裝等重點基地；實施世包研究院、世包大學、高端包裝制品、先進包裝裝備、包裝新材料等18個重點項目，其中由世界包裝中心集團牽頭的“世界包裝產(chǎn)業(yè)中心”將聯(lián)合民企、外企和國企共同投資，面向全球招商，預計投資規(guī)模超過1200億元。 5