外文文献-塑料及塑料工业的发展.doc

1、Plastics and plastic industries Plastic parts in the industrial production has been able to widely used, because they themselves have decided a series of special benefits. 塑料密度小，质量轻。 Plastic density, quality of light. 大多数塑料的密度在1.0-1.4 g/cm 之间。 The density of most plastics in 1.0-1.4 g / cm between.

2、塑料的化学稳定性高，对酸，碱和许多化合物药品都具有良好的耐腐蚀能力且塑料的减磨耐磨性能好，所以现代工业中许多齿轮，轴承和蜜蜂圈等机械零件开始采用工程塑料制造。 Plastic, chemical stability, to acid, alkali, and many pharmaceutical compounds have good corrosion resistance and good wear resistance of plastics by grinding, so many of the modern industrial gears, bearings, rings and

3、 other mechanical parts and the bees began to use projects plastics manufacturing. 此外，塑料的减振和隔音性能也很好，许多塑料还具有透光性和绝热性以及防水，放透气和防辐射等特殊 性能，因此，塑料已成为各行各业不可缺少的一种重要的材料。 In addition, the plastic is also very good damping and sound insulation, and many plastics also have light and heat insulation and waterproof

4、, breathable and radiation release and other special properties, therefore, plastic has become indispensable to all walks of life an important material. 塑料成型技术的发展趋势 The development trend of plastic molding technology 1. CAD/CAE/CAM 技术的快速发展和广泛应用CAD / CAE / CAM technology, rapid development and wide a

5、pplication 2. 各种模具新材料的研制和使用All kinds of mold development and use of new materials 3. 塑料制件的微型化，超大型化和Miniaturization of plastic parts, large and precision of 4. 模具的标准The standardization of mold The classification of many of the plastic mold, according to different methods of plastic molding parts can

6、be divided into the following categories: 注射模 Injection mold 压缩模具Compression mold 挤出模具Extrusion die 气动成型模具Pneumatic mold 除了上述介绍的几类常用的塑料成型模具外，还有泡沫塑料成型模具，浇铸成型模具，滚塑（包括搪塑）成型模具，压延成型模具以及聚四氟乙烯冷压成型模具等 In addition to the introduction of several types of commonly used plastic mold, there are foam mold, castin

7、g mold, rotational molding (including slush) mold, cold rolling Teflon mold and mold, etc. 塑件模具设计 Plastic mold design 注 Injection mold set by the dynamic model and the model of two majorcomponents. 动模安装在注射机的动模板上，定模安装在注射机的定模板上。 Dynamic model installed in the moving platen on the injection machine, wi

8、ll installed in the injection mold machine fixed template. 注射前动、定模在注射机驱动下闭合，形成型腔和浇注系统，注射机将已塑化的塑料熔体通过浇注系统注入型腔，经冷却凝固后，动、定模打开，脱模机构推出塑件。 Injection before the move, scheduled to die in the injection molding machine driven by the closure, the formation of cavity and gating system, plastics injection machi

9、ne will have the plastic melt into the cavity through the casting system, the cooling and solidification, the move, scheduled to die open, stripping organizations to plastic parts. Injection mold can be composed of the following seven systems or institutions:1. 成型零部件 Molding parts 一般有型腔、型芯、成型杆、镶件等，在

10、动 . 定模闭合后，成型零件便确定了塑件的内外尺寸。 Generally cavity, core, forming rods, inserts, etc., in the move. Scheduled to die is closed, forming part of the plastic parts will determine the internal and external dimensions. 2. 导向定位机构 Guide positioning mechanism 为确保动、定模闭合时能准确导向和定位而设置的零件，一般由导柱、导套构成。 To ensure the mov

11、e, scheduled to die is closed and accurate positioning and set-oriented parts, generally by the guide post, guide sleeve composition. 3. 浇注系统 Gating system 由注射机喷嘴到型腔之间的进料通道称为浇注系统，一般由主流道、分流道、浇口和冷料穴组成。 Cavity by the injection machine nozzle to the feed channel between the gating system is called, gene

12、rally from the main channel, diversion channel, composed of the gate and the cold slug. 4. 脱模机构 Stripping institutions 是指模具在开模过程中或开模后将塑件从模具中推出的机构，一般由推杆、推杆固定板、推板、复位杆、拉料杆等组成。 Refers to the process of mold or mold plastic parts mold from the mold after the introduction of the institution, usually by th

13、e putter, putting the fixed plate, push plate, the reset lever, pulling rod and so on. 5. 侧向分型与抽芯机构 Side parting and core pulling 成型带有侧孔或侧凹的塑件，在塑件被推出之前，必须先侧向分型并将侧向型芯抽出。 Molding with a concave side holes or side plastic parts, plastic parts to be introduced in, you must first lateral side parting and

14、 core out. 6. 温度调节系统 Temperature control system 模具的冷却一般采用循环水冷却。 Commonly used mold cooling circulating water cooling. 模具的加热可通入热水、蒸汽、热油或在模具中设置加热元件。 Mold can pass into the hot water heating, steam, hot oil or heating element in the mold set. 7. 排气系统 Exhaust System 一般是在分型面开设排气槽或利用推杆、镶件的配合间隙排气。 Parting

15、surface is generally set up in exhaust ducts or the use of push rod, with the gap exhaust inserts. Classification of Injection Mould1. The overall structure of feature classification by mold （ 1 ）单分型面注射模 (1) single injection mold parting surface （ 2 ）双分型面注射模 (2) Double Injection Mould Parting Surfac

16、e （ 3 ）带有侧向分型与抽芯机构的注射模 (3) with a side parting and core-pulling mechanism of the injection mold （ 4 ）带有活动成型零件的注射模 (4) with the activities forming part of the injection mold （ 5 ）机动脱螺纹的注射模 (5) Motorized off the thread of the injection mold （ 6 ）无流道注射模 (6) No flow injection mold2. According to the species classification of plastic （ 1 ）热塑性塑料 (1) th