模具設計外文翻譯--注塑成型-模具設計-資料下載頁
2025-01-19 05:41本頁面
【導讀】在注塑成型中，塑料顆?？恐辛牧隙愤M入加熱桶。將塑料顆粒緩慢向前推進，塑膠被推進能使之溶化的加熱腔。對于注塑周期開始，四個標準必須滿足：模具打開，推桿收回，這個過程通常要求盡快完成，臨近結束時慢慢靠近。作要求低速和低氣壓閉合。它通常在模具導桿開始運作前，必須正確。設計位置以防止意外損壞模具。當模具與伴觸鉗噸位接觸，隨即溶化。當零件差不多充滿型腔時，注射控制從速率控制轉(zhuǎn)向壓力控制，冷卻時間主要取決于零件的壁厚和材料。澆口已經(jīng)凝固，塑化發(fā)生。料斗頸部必須保持冷卻以防止因為料筒太熱。第一部分是流入部分，它推動塑料小球向前運動并要求。下一部分是轉(zhuǎn)動部分，這一部分負責通過剪切熔融材料。是能夠讓螺桿同時作為擠出機和柱塞的止回閥。在注射中，止回裝置防止注射流回螺桿部分。量避免這種情況。卻不當可導致扭曲成型。均取得顯著改觀。柜操作和液壓系統(tǒng)操作三個方面。分別進行注射過程動作、加料動作、
【正文】 nt departments 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, et
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