模具設(shè)計(jì)外文翻譯--注塑成型-模具設(shè)計(jì)-預(yù)覽頁
【正文】 epartments have established related standards and implementation rules, and required the equipment management departments and production enterprise for equipment management and use achieves scientific management, correctly use and reasonable lubrication, elaborate maintenance, maintenance regularly, plan maintenance, improve equipment intact rate, make the equipment frequently in good condition. Plastic injection molding technology is based on the principle of diecasting from 19th century and the early twentieth century developed, is currently the most widely used processing plastic one way. The method applies to all thermoplastics and parts of thermosetting plastic (occupy plastic volume 1/3) Injection system is the heart of injection molding machine, its effect is guaranteed timing, quantitatively the material plastication heating, and then taking certain pressure and speed of the equivalent as soon as possible an injection quantity of molten plastic injection mold cavity, even for a plete injection time pressurekeeping to mold cavity supplement for cooling and contraction of the cladding material, make the products closegrained and prevent mold cavity material reverse flow. Therefore, plastic injection unit must ensure uniform plasticizing, and have enough injection pressure and holding pressure. Can meet these requirements of injection equipment mainly have piston type, plunger screw, screw, etc. Note: Injection action program: Nozzle forward injection pressurekeeping plastic shrinkage furnacerough pour gets back cooling furnacerough furnacerough nozzle open mold ejection back needle open closed shut the mould nozzle forward Injection molding machine operation projects: injection molding machine operation project including control keyboard, electric contorol operation and hydraulic system operating three aspects. Separately injection process action, charging action, injection pressure and injection velocity, ejector type selection, nitrogentreated barrel paragraphs temperature and current and voltage monitoring, injection pressure and back pressure adjustment, etc
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