1、毕 业 设 计（论 文）外 文 参 考 资 料 及 译 文译文题目：The introduction of the injection mold 注射模具的介绍 学生姓名： 学号： 专业： 所在学院： 指导教师： 职称： 20xx年 1 月 31 日The introduction of the injection mold1.mold basic knowledge1.1 introductionThere is a close relationship with all kinds of mold,which are refered to our daily production,and
2、life in the use of the various tools and products,the large base of the machine tool,the body shell,the first embryo to a small screws,buttons,as well as various home appliances shell.Molds shape determine the shape of these products,moldsprecision and machining quality determine the shape of these
3、products too.Because of a variety of products ,appearance,specifications and the different uses,mold devide into Die Casting into the mould,die forging,die-casting mould,Die,and so on other non-plastic molds,as well as plastic mold.In recent years,with the rapid development of the plastics industry,
4、and GM and engineering plastics in areas such as strength and accuracy of the continuous enhancement,the scope of the application of plastic products have also constantly expanded,such as:household appliances,instrumentation,construction equipment,automotive,daily hardware,and many other fields,the
5、proportion of plastic products is rapidly increasing.A rational design of plastic parts often can replace much more traditional metal pieces.The trend of industrial products and daily products plasticed is rising day after day.1.2 Mold general definitionIn the industrial production,with the various
6、press and the special intruments which installed in the press,it produces the required shape parts or products through pressure on the metal or non-metallic materials,this special instruments collectively call as the mold.1.3 Mold general classificationMold can be divided into plastic and non-plasti
7、c mould:(1)Non-plastic mould:Die Casting,forging Die,Die,die-casting mould and so on.A Die Casting-taps,pig iron platformB.Forging Die-car body C.Die-computer panel D.Die Casting Die-superalloy,cylinder body(2)For the production technology and production ,the plastic mold are divided into different
8、products:A.Injection molding die-TV casting,keyboard button(the most common application)B.Inflatable module-drink bottles C.Compression molding die-bakelite switches,scientific Ciwan dish D.Transfer molding die-IC products E.Extrusion die-of glue,plastic bags F.Hot forming die transparent shell mold
9、ing packaging G.Rotomoulding mode-Flexible toy doll.Injection Molding is the most popular method in plastics producing process.The method can be applied to all parts of thermoplastic and some of thermosetting plastics,the quantity of plastic production is much more than any other forming method.Inje
10、ction mold as one of the main toolsof injection molding processing,whose production efficiency is low or high in the quality of precision、manufacturing cycle and the process of injection molding and so on,directly affect the quality of products,production,cost and product updates,at the same time it
11、 also determines the competiveness of plate which mass with the various component parts.It divided into:A molding device(Die,punch)B positioning system(I.column I set)C fixtures(the word board,code-pit)D cooling system(carrying water hole)E thermostat system(heating tubes,the hotline) F-Road System(
12、jack Tsui hole,flow slot,streaming Road Hole)G ejection system(Dingzhen,top stick).1.4 Type of moldIt can be divided into categories according to gating system with the different type of mold:(1)intake die :Runner and gate at the parting line,it well strip together with products when in the open mod
13、e,it is the most simple of design,easy processing and lower costing.So more people operations by using large intake system.(2)small inlet die:It general stay in the products directly ,but runner and gate are not at the parting line.Therefore,it should be design a multi-outlet parting line.And then i
14、t is more complex in the designing,more difficult in processing,generally chosing the small inlet die is depending on the products requirements.(3)hot runner die:It consists of heat gate,heat runner plate,temperature control box.Hot runner molds are two plate molds with a heated runner system inside
15、 one half of the mold.A hot runner system is divided into two parts:the manifold and the drops.The manifold has channels that convey the plastic on a single plane,parallel to the parting line,to a point above the cavity.The drops,situated perpendicular to the manifold,convey the plastic from the manifold to the part.The advantages of hot runner system:(1)No outlet expected,no need processing,the whole process fully automated,save time and enhance the efficiency of the work.(2)small pressure loss.2.Injection MoldThere
