注射成型機外文翻譯-文庫吧資料
2025-05-21 22:18本頁面
【正文】 of two (1) heating plastic to reach the molten state (2) to exert high pressure on the molten plastic. it shot full of mold cavity. Working principle and mode of The working principle of injection molding machine and injection syringe, it is with the thrust of the screw (or plunger), the plasticizing good molten state (ie, viscous flow state), the plastic injected into the mold cavity closed good After curing stereotypes made the process of the products. Injection molding is a cyclical process, with each cycle including: dosing molten plastics to put pressure injection filling Cooling Kaimode pickup. Remove the plastic parts and then reclosed mode, the next cycle. Injection molding machine operating items: injection molding machine operating projects including the control keyboard operation, the operation of electrical control system and hydraulic systems operating in three aspects. Separate action of the injection process, feeding action, injection pressure, injection speed, the top choice of the type, barrel temperature of each monitor, injection pressure and back pressure regulation. Screw injection molding machine molding process: First, granular or powdered plastic in the machine barrel, through which the screw rotates and the outer wall of the barrel, heating the plastic to bee molten state, then the machine before clamping and injection shift, so that the nozzle closely aligns the mold gate Road, then the oil pressure to the injection cylinder Walter, screw forward to high pressure and a faster speed will melt into the closed mold temperature is low , after a certain period of time and pressure to keep (also known as pressure), cooling, curing, the mold can be opened to remove the products (the purpose of holding pressure to prevent the reflux of the melt in the mold cavity, supplementary material to the mold cavity, and to ensure that products have a certain density and 5 dimensional tolerances). The basic requirements of the injection molded plastics, injection and molding. The plasticizing premise to achieve and guarantee the quality of the molded part, to meet the requirements of forming, injection must ensure there is enough pressure and speed. The same time, due to the high injection pressure, the corresponding cavity to produce a high pressure (average pressure of the cavity is generally between 20 ~ 45MPa), so there must be large enough clamping force. Thus, the injection unit and clamping devices are key ponents of the injection molding machine. Mainly in three aspects of the evaluation of plastic products, and the first appearance of quality, integrity, color, luster。 注塑機是目前中國塑料機械中發(fā)展速度最快、水平與工業(yè)發(fā)達國家差距較小的塑機品種之一。 ? 近幾年來，世界上工業(yè)發(fā)達國家的注塑機生產(chǎn)廠家都在不斷提高普通注塑機的功能、質(zhì)量、輔助設(shè)備的配套能力，以及自動化水平。又如浙江省寧波海天機械有限公司生產(chǎn)的 HTF80XHFT3600X 型系列注塑機，可用于生產(chǎn)各種高精密的熱性塑料制品，機器采用線型移動傳感器控制注射、合模、頂出，采用多重 CPU 電控系統(tǒng)、大幅面彩色 LED 顯示、全電腦自動控制。上述產(chǎn)品的主要生產(chǎn)廠家都有自己的系列，各有自己的特點。熱塑性塑料包括聚苯乙烯、聚乙烯、聚丙烯、尼龍、聚氨酯、聚碳酸酯、有機玻璃、聚砜及 (丙烯腈 /丁二烯 /苯乙烯 )共聚物 (ABS)等。按生產(chǎn)出的制品可分
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