【正文】 的工作過(guò)程 ： 注 射 成型機(jī)通過(guò)抽真空把 射 料原料從干燥機(jī)吸到料斗里面。料斗實(shí)際上是一個(gè)小的漏斗，它被安裝在機(jī)臺(tái)料筒的后面。開(kāi)始起實(shí)際作用的地方是料筒，料筒實(shí)質(zhì)上是四周都是加熱器的一個(gè)很大的螺桿安放室，它把原料送向模具。隨著螺桿的旋轉(zhuǎn)，原料在料筒里前進(jìn)并成為熔融狀態(tài)。只有完全熔融后，原料才會(huì)在螺桿高速旋轉(zhuǎn)產(chǎn)生的擠壓力下射進(jìn)模腔。 當(dāng)螺桿前端 壓室注滿(mǎn) 射 料時(shí)，螺桿被迫后退，斷開(kāi)限位開(kāi)關(guān)而開(kāi)動(dòng)液壓缸，從而向前推動(dòng)螺桿，將熔融 射 料注射到閉合的模具型腔中。型腔被充滿(mǎn)后，澆口處先凝固，注射機(jī)螺桿抽回時(shí)可防止成型中的回流。 螺桿端部稱(chēng)為噴嘴，從這里開(kāi)始直到模具型腔這段空間內(nèi)，熔融材料沒(méi)有被加熱，并且一直處于被冷卻的狀態(tài)。流道水口料就是在噴嘴到模腔之間冷卻固化的 射 料，屬于工藝廢料。實(shí)際上，在噴嘴到模腔之間的冷卻 射 料是 “ 主流道 ” ，但它和流道是連在一塊的。有一些關(guān)于處理水口料的方法，但這不是我們這里要討論的。大多數(shù)人以前都見(jiàn)過(guò)流道，但卻沒(méi)有認(rèn)出。最容易見(jiàn)到他們的地 方是由單獨(dú)零件構(gòu)成的飛機(jī)和汽車(chē)模型上，在這些零件上面一般都附著著流道系統(tǒng)。一般地，水口料被頂出，落進(jìn)安放在模具下面的落料裝置（通過(guò)一個(gè)斜坡傳送通道），或者被機(jī)械手取出，然后投入粉料機(jī)。粉料機(jī)把水口料絞成碎料并送回干燥機(jī)。 盡管塑料一旦被加熱就會(huì)發(fā)生降解，而且有些成型工藝不允許碎材混入原材料里面，因?yàn)檫@樣會(huì)導(dǎo)致成品的缺陷。這種情況下水口料可以用到其他地方或者干脆不用。收縮在成型中影響深遠(yuǎn)，大部分塑料冷卻后會(huì)收縮 20%。為了在重點(diǎn)（關(guān)鍵）塑料零件上 當(dāng)然不只是玩具 克服這種現(xiàn)象，模具設(shè)計(jì)者必須把這個(gè)要素考 慮到設(shè)計(jì)里面去，那樣成型出來(lái)的產(chǎn)品才能滿(mǎn)足設(shè)計(jì)規(guī)格。 頂針是模具本身的零件，用來(lái)在模具打開(kāi)的時(shí)候頂出產(chǎn)品。整個(gè)過(guò)程都有注射成型機(jī)控制 。 一個(gè)成型周期實(shí)際上就是合模 注射 開(kāi)模 頂出。模具被鎖緊在機(jī)臺(tái)上，前模固定不動(dòng)（在機(jī)臺(tái)的料筒側(cè)），后模則可以移動(dòng)。上面說(shuō)的頂針就是后模側(cè)。當(dāng)模具打開(kāi)，產(chǎn)品吸附在后模側(cè)以被頂出。 以上就是關(guān)于注 射 模具的相關(guān)介紹 。 5 The introdution of the Injection Mold 1. Mold basic knowledge Introduction There is a close relationship with all kinds of mold,which are refered to our daily production, and 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. Mold’s shape determine the shape of these products, mold’s precision and machining quality determine the quality of these products,too. Because of a variety of products, appearance, specifications and the different uses,mold devide into Die Casting into the mould, die fing, diecasting 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, 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 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. Mold general definition In the industrial production， with the various press and the special instruments which installed in the press,it produces the required shape parts or products through pressure on the metal or nonmetallic materials, this special instruments collectively call as the mold. Mold general classification Mold can be divided into plastic and non plastic mould: (1) Nonplastic mould: Die Casting, fing Die, Die, diecasting mould and so on. A. Die Casting taps, pig iron platformB. Fing Die car body C. Die puter panel D. Die Casting Die superalloy, cylinder body (2) For the production technology and production, the plastic mold are divided into different products: A. Injection molding die TV casing, keyboard button (the most mon 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 molding packaging G. Rotomoulding mode Flexible toy doll. Injection Molding is the most popurlar 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 6 forming mold as one of the main toolsof injection molding processing,whosh 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 also determines the petitiveness of enterprises in the market39。s