空調蝸輪零件的注塑塑料模具設計【UG】【抽芯】-[機械畢業(yè)設計論文A3279]

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┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 裝 ┊ ┊ ┊ ┊ ┊ 訂 ┊ ┊ ┊ ┊ ┊ 線 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 外文科技文獻譯文 塑料制品與塑料模具的發(fā)展趨勢 1、塑料產業(yè) 改革開放以來，塑料制品加工產業(yè)在我國以平均每年百分之十的速度迅速發(fā)展，與GDP的平均增長點相比，要高出3到5個百分點?，F在，我國塑料制品已經進軍到了世界發(fā)達國家的水平，每年塑料產品的產量躍居世界第二，而且形成了完整的產業(yè)分類系統。 隨著塑料制品的應用領域不斷擴大，在未來10年世界塑料制品的產量將在每年3％的的速度增加，在2010年世界塑料產品的總容量將高達186萬噸。我國對塑料制品越來越大的需求將不斷，塑料產品的生產將在每年10％的的速度增加，據估計，總電容塑料制品在我們的國家嘗試性在2010年將接近40萬噸。 在未來我國塑料行業(yè)發(fā)展的關鍵是在塑料制品行業(yè)方面，交通和工程，包裝塑料制品，建筑塑料制品，農用塑料制品和塑料節(jié)水制品等。 1.1 塑料制品在工業(yè)，交通和工程 工程塑料是目前在塑料行業(yè)的發(fā)展最快的類別。隨著我國經濟的快速發(fā)展，其應用范圍和數量不斷增加。在此范圍內的產品包括用于交通和運輸業(yè)以及塑料在電子，電氣設備和信息用塑料抽動工程工業(yè)等。在2005年，我國工程塑料制品總需求量約4.5萬噸，在2010年，只有汽車塑料的需求將高達1萬噸。 1.2 用于包裝的塑料制品 塑料具有優(yōu)良的特點，包裝是最大的領域，塑料將用于包裝領域。統計表明，在每個國家的包裝用塑料同樣是35％。2003年，在我國的包裝使用的塑料制品輸出4.65萬噸，占總量的28.1%的塑料產品,產值達到680億元,與2001年相比增長了14.2%。據估計，在2010年之前在我國包裝塑料制品的年平均增長率是12％。 1.3 用于建筑的塑料制品 塑料建材是新興的第四代新型建筑材料，主要包括塑料管，塑料門窗，建筑防水材料，保溫材料，裝飾材料等，在建筑工程中的使用是非常廣泛，市政工程，村莊和小城鎮(zhèn)建設以及工業(yè)建設。塑料建材不僅能替代傳統建筑材料，如木材，鋼材等，但也有許多優(yōu)勢，如節(jié)能和節(jié)材，保護生態(tài)環(huán)境，改善居住環(huán)境，提高建筑功能和質量，降低建筑自重，便于建設等。建筑業(yè)是國民經濟的支柱產業(yè)，我國建筑行業(yè)將在未來5-15年能夠有一個更大的發(fā)展。 1.4 在農業(yè)和塑料節(jié)水設備使用的塑料制品 作為一個廣泛應用的農用地面覆蓋膜和涂層膜，高效率的農業(yè)節(jié)水灌溉工程的迅速推廣以及如漁業(yè)，畜牧業(yè)和林業(yè)等相關行業(yè)的規(guī)模發(fā)展的結果，農業(yè)已成為第二大塑料制品消費領域，是僅次于包裝行業(yè)。農用塑料市場的巨大潛力，為塑料行業(yè)的發(fā)展提供了更廣闊的發(fā)展空間。地面覆蓋膜在全國的總面積是170萬中國地區(qū)，再加入氨膜，青貯膜，飼草用膜，在纏繞的膜，塑料種植苗木容器，遮陽網，漁網，所用材料農產品儲存和保持新鮮感，農藥設備，發(fā)泡塑料板等，農用塑料產品，在全國約3萬噸。隨著我國社會經濟的持續(xù)和快速發(fā)展，淡水資源越來越缺乏，塑料節(jié)水設備將有巨大的發(fā)展空間。 1.5 在商品和藥品中使用的塑料制品 隨著人民生活水平的不斷提高，在每天的生活所需的塑料產品產品的數量將不斷增加，日常使用的產品仍然有巨大的潛在市場。醫(yī)用塑料產品在塑料行業(yè)的技術含量和附加價值最高的產品，現在則是以15％的年均速度增長。但在我國醫(yī)療塑料制品的產值只有2％?3％的醫(yī)用塑料產品的產值在世界上的帳戶，每人的平均消費是達不到發(fā)達國家的5％。因此，在我國醫(yī)療塑料制品的市場前景極為廣闊。 2、模具行業(yè) 由于市場需求的強大的吸引，模具行業(yè)在高速發(fā)展，市場廣闊，生產和銷售都繁榮。在近三年來，我國模具行業(yè)每年的平均增長率是21％。在2003年產值超過450億元，約等于5億美元以上，占據了世界第三。行業(yè)專家的預測是，在我國塑料模具在未來10年將繼續(xù)以15%以上的平均年增長率增長，甚至更長的時間。同時，模具的出口也有廣闊的發(fā)展前景。 對于未來一段時間內，對模具的需求將主要表現在4個專業(yè)：汽車行業(yè)，家電行業(yè)的，電子及通訊行業(yè)和建材行業(yè)。至于汽車行業(yè)，目前我國汽車產量超過400萬美元，基本類型車輛已達到170多種，新類型的車輛和改裝型車輛將多達430種，有大約80％的模具類型的車輛時，要改變需要更換，一個型號的汽車將需要成千上萬的模具，價值1億元;在家電界，彩電，冰箱，洗衣機，空調，微波爐，錄像機，攝像機，VCD和DVD等大多是由塑料和橡膠產品配件相結合，因此它需要相當多的模具很多。 塑料加工業(yè)和模具制造行業(yè)作為朝陽產業(yè)，加工和制造技術將改變每個新的一天。隨著改性塑料的不斷發(fā)展和應用，毫微米塑料和特種工程塑料，以及信息技術的快速發(fā)展，必須把高精度，高復雜度，高均勻性和高生產低消費，塑料加工行業(yè)和模具制造業(yè)必將成為在21世紀的大多數發(fā)展中國家的未來的行業(yè)之一。 3、塑料注塑模具的回推機制 這個實用新型是一種推回機制的注塑模具，它包括第一個拉鉤固定在前面的模具上，第二個拉鉤固定在后面的模具和定位塊固定在彈射系統。在合模的條件下，第一個拉鉤一端穿過后面的模具前模具的背面和彈射系統，依次向后延伸。第二拉鉤的一端隨著背面模具移動，另一端是自由端，位于定位塊上。當合模時，第一隔拉鉤的自由端與第二個拉鉤的自由端接觸和合作，在次之前，正面和背面模具結合，同時推動第二拉鉤旋轉推定位塊和彈射系統，以使他們前推回，然后滑動塊和背部模具移動到指定位置。這種實用新型可以有效地避免滑動塊和受到干擾的頂針和模具在合模的影響造成的損害。 4、塑料模具 這種實用新型是有關一種塑料模具。它包括前輔助板和背面輔助板是對稱的對方。前輔助板和背面的輔助板連接在一起，形成一個輔助通道和澆注口。輔助通道和澆注口是互相聯系的。截面尺寸的話，澆注口與輔助通道的連接處比較大，另外的截面相對較小。澆注口彎曲成一個尖角，本節(jié)的末尾是較小的與最終產品內表面連接著。 5、中國的塑料機械行業(yè) 經過50多年的發(fā)展，中國的塑料機械行業(yè)的歷史走增長，從無到有，從小到大，從默默無聞到世界聞名。注塑機是中國塑料注塑機械行業(yè)的第一大產品，注塑機的發(fā)展已經被世界塑料機械行業(yè)所稱贊。目前，中國的注塑機的發(fā)展有七大亮點。 在中國注塑機的輸出是在同行業(yè)中排名第一，塑料機械的三大類是注塑機，擠出機和吹塑機，它們占塑料機械總產量的80％以上其中，注塑機也占上述三類總產量超過50％。 2006年，注塑成型機的輸出量排名世界第一，世界注塑機年產量91480單位，注塑機在中國內地的產量為57600個單位，這個產量占世界注塑機年產量的62.97％，其中，在中國寧波的注塑機的年產量約占世界的1 / 3，它是世界上最大的的注塑機生產基地。 它是歐洲年度總產量在世界注塑機的三分之一，日本是在第二位。 中國的注塑機已成為第一出口機械產品。2006年，中國的注塑機出口額占塑料機械出口占整體出口貨值的54％。它是塑料機械出口的主力軍。 注塑機的發(fā)展速度在同行業(yè)中排名第一。在新的世紀，中國的塑料機械行業(yè)的平均增長率超過20％，注塑機的發(fā)展步伐已在行業(yè)中遙遙領先。 注塑機的技術水平與發(fā)達國家的差異較小，由于技術創(chuàng)新步伐的加快，和進一步增強自主創(chuàng)新能力，與發(fā)達國家相比，中國的注塑機的大部分已達到20世紀80年代末的產品的水平。少量的產品已經接近20世紀90年代的水平，部分產品已在世界的領先地位了。 注塑機行業(yè)實現了在中國著名名牌產品“零”的突破。2007年9月11日，中國塑料機械行業(yè)首次榮獲“中國著名品牌的產品品牌”四項大獎，其中三個獎項屬于注塑機產品。 3 The development trend of plastic products and plastic molds 1.the plastic industry Since the reform and opening up, the plastics processing industry in China quickly to an annual average of 10 per cent of the speed of development, compared with the average GDP growth point to 3-5 percentage points higher. Now, the plastic products in China has to enter into the level of developed countries in the world, the annual output of plastic products ranked second in the world, and formed a complete industrial classification system. With the expanding applications of plastics, production of plastic products in the world in the next 10 years the rate of 3% per year increase in total capacity of plastic products in the world in 2010 will reach 1.86 million tons. China's growing demand for plastic products will continue to the production of plastic products in the annual rate of 10% of the increase, it is estimated that the total capacitance of plastic products in our country try to be close to 40 million tons in 2010. The key to the future development of China's plastics industry in the plastics industry, transportation and engineering, packaging, plastic products, construction plastics, agricultural plastic products and plastic water-saving products, such as. 1.1 plastic products industry, transportation and engineering Engineering plastics is in the plastics industry's fastest-growing category. With China's rapid economic development, its scope of application and the number is increasing. Within this range of products including plastic tic engineering industries in electronics, electrical equipment and information for traffic and transport, as well as plastic. In 2005, the total demand of engineering plastic products in China about 45,000 tons in 2010, demand for automotive plastics will reach 10,000 tons. 1.2 of plastics for packaging The plastic has excellent characteristics, packaging is the largest area, the plastic will be used in the field of packaging. Statistics show that the plastic in the packaging of each country is also 35%. In 2003, the plastics used in packaging in China output to 46,500 tons, accounting for 28.1% of the total plastic products, the output value reached 68 billion yuan, an increase of 14.2 percent compared with 2001. It is estimated that the packaging plastic products in China, average annual growth rate in 2010 is 12%. 1.3 for the construction of plastic products Plastic materials is the emerging fourth generation of new building materials, including plastic pipes, plastic doors and windows, building waterproofing materials, insulation materials, decorative materials, use in construction projects is very broad, municipal engineering, villages and construction of small towns andindustrial construction. Plastic building materials not only can replace traditional building materials such as wood, steel, etc., but there are also many advantages, such as energy and materials, protection of ecological environment, improve the living environment, improve building functionality and quality, reduce construction weight, ease of construction. The construction industry is a pillar industry of national economy, China's construction industry will have a greater development in the next 5-15 years. 1.4 plastic products used in agriculture and plastic water-saving devices Results as a widely used agricultural ground cover film and the rapid diffusion of the coating film, the high efficiency of agricultural water-saving irrigation projects, as well as the scale of the development of related industries such as fisheries, animal husbandry and forestry, agriculture has become the second largest plasticsconsumer field, is second only to the packaging industry. Agricultural plastics huge market potential for the development of the plastics industry to provide a broader space for development. Ground cover film in the country's total area of ??1.7 million in China, then add the ammonia film, silage film, forage membrane, membrane in the wound, the plastic planting seedling container, shade nets, fishing nets, the materials used in agricultural products to store and keep it fresh pesticide equipment, foam plastic board, agricultural plastic products, about 30,000 tons in the country. With the sustained and rapid development of China's socio-economic, freshwater resources, more and more the lack of plastic water-saving devices will have a huge space for development. 1.5 of plastic products used in the goods and medicines With the continuous improvement of people's living standards, the number of products in plastic products for everyday life will continue to increase, the products of daily use there is still a huge potential market. The technical content of medical plastic products in the plastics industry and the highest value-added products, and now is based on an average annual growth rate of 15%. The output value of medical plastic products in China, only 2% to 3% of the output value of the medical plastic products in the world account, the average per capita consumption is 5% less than in developed countries. Therefore, the market prospect is extremely broad in medical plastic products in China. 2.the mold industry Due to strong market demand to attract mold industry in both prosperity and rapid development of a broad market, production and sales. In the past three years, the average annual growth rate of China's mold industry is 21%. The production value of more than 45 billion yuan in 2003, about equal to more than $ 500 million, accounting for a third in the world. Industry experts predict, plastic mold in China will continue in the next 10 years the average annual growth rate of more than 15 percent growth, or even longer. At the same time, the export of mold there are broad prospects for development. For the next period of time, the demand for molds in four professional: the automotive industry, appliance industry, electronics and communications industry and building materials industry. As for the automotive industry, vehicle production in China more than four million U.S. dollars, basic types of vehicles has reached more than 170 kinds of new types of vehicles and converted vehicles will be up to 430 kinds, about 80% of mold types of vehicles, to change the need replacement, a model of car will need tens of thousands of mold, worth 100 million yuan; mostly in the sector of household appliances, color TV, refrigerators, washing machines, air conditioners, microwave ovens, video recorders, video cameras, VCD and DVD, and other accessories made of plastic and rubber products the combination, so it need quite a lot of mold. The plastics processing industry and mold manufacturing industry as a sunrise industry, the processing and manufacturing technologies that will change each new day. With the continuous development and application of modified plastics, nanometer plastics and special engineering plastics, as well as the rapid development of IT, high-precision, high complexity, high uniformity and low consumption of high production, plastics processing industry and Mould Manufacturing the industry will become one of the industries most developing countries in the 21st century. 3.plastic injection mold, push-back mechanisms This utility model is a push-back mechanism of injection molds, including a retractor fixed on the front of the mold, and the second retractor fixed to the back of the mold and the positioning block fixed to the ejection system. Clamping conditions, the first retractor end through the back of the back of the mold before the mold and the ejection system, followed by backward extension. Second retractor end of mobile With the back of the mold, the other end of the free end is located on the positioning block. When the mold, first separated from the free end of the retractor and the second retractor free end of the contact and cooperation in the times before, the front and back mold combination, while promoting the second retractor rotating push the positioning block and the ejection system, so that they forward and backward, and then slide the block and back mold to move to the specified location. This utility can effectively avoid the damage caused by the sliding block and disruption of the thimble and mold in the mold of the impact. 4.plastic mold This utility model is related to a plastic mold. It includes the former auxiliary board and the back of the auxiliary plate is symmetrical each other. The former auxiliary board and the back of the auxiliary board connected together to form an auxiliary channel and pouring mouth. The auxiliary channel and the pouring port is interconnected. Sectional dimension of words, pouring mouth and the junction of the auxiliary channel is relatively large, and another cross-section is relatively small. Mouth curved into a sharp corner in the pouring end of this section is smaller and the final product connected to the inner surface. 5.China's plastics machinery industry After 50 years of development, the history of China's plastics machinery industry go growth, from scratch, from small to large, from obscurity to world-famous. The injection molding machine plastic injection molding machinery industry in China products, the development of injection molding machine has been the world's plastics machinery industry praised. At present, the development of injection molding machines in China's seven major bright spot. The output of the injection molding machine in the industry ranked first in three categories of plastic machinery, injection molding machines, extruders and blow molding machines, they accounted for more than 80% of the total output of plastic machinery, which, injection molding machine is also accounted for the three types of output of more than 50%. In 2006, the output of the injection molding machine ranked first in the world, 91,480 units of the World annual production of injection molding machines, injection molding machine production of 57,600 units in mainland China, this production accounted for 62.97% of the world's annual production of injection molding machine, which, in Chinese Ningbo's annual production of injection molding machine about 1/3 of the world, it is the world's largest production base of the injection molding machine. It is one-third of the European total annual production of injection molding machine in the world, Japan is in second place. The injection molding machine in China has become the first export of machinery products. In 2006, China's exports of injection molding machines accounted for plastics machinery exports accounted for 54% of the value of total exports. It is the main force of the plastics machinery exports. The pace of development of the injection molding machine in the industry. In the new century, China's plastics machinery industry average growth rate of over 20%, far ahead of the pace of development of the injection molding machine in the industry. The technological level of the injection molding machine, the smaller the difference in developed countries, due to the accelerated pace of technological innovation, and further enhance the capability of independent innovation, compared with developed countries, most of the injection molding machine in China has reached the end of the 1980s products level. A small number of products have been close to the level of the 1990s, some products have a leading position in the world. The injection molding machine industry to achieve a breakthrough in China's famous brand-name "zero". September 11, 2007, China's plastics machinery industry for the first time won the "Chinese famous brand products brand" four awards, three awards are the product of the injection molding machine.