【正文】 mall 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 beyond the scope of what we39。 The barrel is where all the real work is done and it39。模具被鎖緊在機臺上，前模固定不動（在機臺的料筒側(cè)），后模則可以移動。粉料機把水口料絞成碎料并送回干燥機。型腔被充滿后，澆口處先凝固，注射機螺桿抽回時可防止成型中的回流。 在 射 料充滿型腔后 ,澆口很快就會冷卻 ,注射的噴嘴往后退 ,在模具退后的時候 射 料還是留有在噴嘴中的 。 甚至更危險的是 ,射 料噴射進模具的時候 ,它會飛濺出傷害到 人本身 。 分模線 為了能夠生產(chǎn)出一個模具 ,我們必需具備有兩個分半的模具 ,一半裝型腔一半裝型芯 。 大部分 射 膠制品是杯形 的 。 在注 射 成型時 ,射 料是通過很高的壓力注 射 入型腔空間的 ,所以模具必須要足夠的堅固來抵抗注 射 的壓力 ,以防變形 。 注 射 模 至少 是 由裝在 注 射 機的兩個壓板 上 的 兩部分組成，以便可以開模和合模 。 設(shè)計，模具制造， 和 成型，它通常的優(yōu)勢 就是 遵 循 規(guī)則 。熱流道模具是在一個半模有流道加熱系統(tǒng)的兩板式模具。工業(yè)產(chǎn)品和日用產(chǎn)品 射 料化的趨勢不斷上升。因為各種產(chǎn)品的材質(zhì)、外觀、規(guī)格及用途的不同，模具分為了鑄造模、鍛造模、壓鑄模、沖壓模等非 射 膠模具，以及 射 膠模具。 注 射 模具是由若干塊鋼板配合各種零件組成的，基本分為： A 成型裝置（凹模，凸模） B 定位裝置（導(dǎo)柱，導(dǎo)套） C 固定裝置（工字板，碼?？樱? D 冷卻系統(tǒng)（運水孔） E 恒溫系統(tǒng)（加熱管，發(fā)熱線） F 流道系統(tǒng)（唧咀孔，流道槽，流道孔） G 頂出系統(tǒng)（頂針，頂棍） 模具的類型 2 根據(jù)澆注系統(tǒng)型制的不同可將模具分為三類 :（ 1）大水口模具：流道及澆口在分模線上，與產(chǎn)品在開模時一起脫模，設(shè)計最簡單，容易加工，成本較低，所以較多人采用大水口系統(tǒng)作業(yè)。 （ 2）壓力損耗小。 注 射 過程說明：模具是一種生產(chǎn) 射 料制品的工具。 模具的設(shè)計是由產(chǎn)品的形狀和產(chǎn)品開模的方式?jīng)Q定的 。 選擇這些數(shù)字（偶數(shù)）的原因是為了在長方形區(qū)域內(nèi)布置型腔方便，這樣就有利于 設(shè)計、定尺寸、加工制造和圍繞機器中心對稱，這種對稱分布對于保證每個型腔分配到相同的鎖模力非常重要 。 大部分的注 射 機在注 射 的一邊都不會安裝彈射裝置 。 為了能夠在模具上脫出產(chǎn)品 ,分模線總是在分布在產(chǎn)品最寬的圓周區(qū)域 。 澆口是一個小型的開口 ,它引導(dǎo)著流道到型腔空間 。隨著螺桿的旋轉(zhuǎn)，原料在料筒里前進并成為熔融狀態(tài)。大多數(shù)人以前都見過流道，但卻沒有認出。 頂針是模具本身的零件，用來在模具打開的時候頂出產(chǎn)品。s response capacity and speed. Injection Mold consist