模具設(shè)計(jì)外文翻譯--注塑成型-模具設(shè)計(jì)-文庫吧
2024-12-30 05:41 本頁面
【正文】 化，并有足夠的注射壓力和保壓壓力。能滿足這些要求的注射裝置主要有柱塞式、柱塞 —螺桿式、螺桿式等。 注： 注塑機(jī)的動作程序 ： 噴嘴前進(jìn) → 注射 → 保壓 → 預(yù)塑 → 倒縮 → 噴嘴后退 → 冷卻 → 開模→ 頂出 → 退針 → 開門 → 關(guān)門 → 合模 → 噴嘴前進(jìn) 注塑機(jī)操作項(xiàng)目：注塑機(jī)操作項(xiàng)目包括控制鍵盤操作、電器控制柜操作和液壓系統(tǒng)操作三個方面。分別進(jìn)行注射過程動作、加料動作、注射壓力、注射速度、頂出型式的選擇，料筒各段溫度及電流、電壓的監(jiān)控，注射壓力和背壓壓力的調(diào)節(jié)等 Injection molding In injection molding, plastic particles by neutral from hopper into heat barrel. When screw plunger will plastic particles slow advance, plastic is advancing can make the melting of heating chamber. Because the plunger moving forward, melting plastic oppression by opposite the mould of nozzle, sprue and hot word systems into a cavity. Mould keep cooling, thus mould once be filled, plastic began to solidify. For injection molding cycle begins, the four standard must satisfy: mold open, push rod back, start injection, transmission forward. When this standard has achieved, injection cycle with mold closed began. The process is usually required to quickly finish, near the end of the approaching. Mould work requirements low and depression closure. It is usually in the mold guide bar begins operation before, we must properly design position to prevent accidental damage mold. When the panion touch clamp mold, then melting plastic tonnage contact this is injected into the mould. Materials through the gate set into the mold runner system will materials, after passing to the gate. Sprue guide material into the mold cavity forming wanted parts. The injection process usually have rate control. If parts are almost full of cavity, injection control from rate controlling steering pressure control, called pressurekeeping cycle. Pressure must be kept until sprue place to avoid molten plastic solidification of backflow. The cooling time mainly depends on the part of wall thickness and materials. Injection products usually require fast cooling. Water usually through waterway into the mold speed up the cooling speed. In cooling cycle after part, sprue has solidification, plasticizing happen. Plasticizing is molten plastic injection of a good man and prepare the next process. Materials in the hopper through hopper neck b
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