成型工藝流程及條件介紹(注塑技術(shù)英語大全)-wenkub
2022-09-03 01:12:03 本頁面
【正文】 ut it can’t shot short. But it cost a lot of time to produce one product if every time molding parameter is setting by calculation. Vi: injection volume of theoretical Ds: diameter of screw L: injection stroke Si: injection stroke L=Si=Vi/ 注射是把塑料原料經(jīng)加熱后射進(jìn)模腔的過程,它一般可分為第一級,第二級,第三級,第四級及保壓幾段: Molding Temperature(’c)分解溫度℃ 原料 Injection and plastic Technique parameter setting Nozzle temperature setting should low if product line. If resin material such as Heating technique parameter setting Lowpressure section: Mold closing sets lowpressure when plates meeting. This position is set to the data of machine screen on this time. This point is the gage of the data. Data lower the point there is no highpressure. Data higher the point there is highpressure easily. It set speed within 1525% and pressure within 12% depending on type within 12% depending on type of injection molding machine. In highspeed section, Mold closing speed depends on type of mold. For two –plate mold it can set quick and even especially quick usually, it set speed within 5575%. For fullplate mold it set speed within8090% while using especially high speed it set speed within 4555% and pressure within 5075% position distance setting differs depending on the volume of product and usually it can be set 1/3 of mold opening position. Molding technique procedure and parameter introduction Section 1 molding technique. Sorts of molding parameter. Injection parameter. Injection rate. Screw back position Cushion Sucking back rate Screw speed Plastic0 rate Screw back pressure Injection pressure and holding pressure Injection speed Clamping parameter Clamping force Clamping speed Clamping stroke Opening force Opening speed Opening position Ejector advance pressure Ejector advance speed Ejector advance position Temperature parameter Dry resin material temperature Cylinder temperature and nozzle temperature Mold temperature Oil temperature Molding cycle Cycle time Cool time Injection time Holding pressure time Plant time Knocking out and delay time Mold protect time Molding technique parameter setting differs depending on type of product 第二節(jié)成型條件設(shè)定 按成型步驟:可分為開鎖模,加熱,射出,頂出四個過程. 開鎖模條件: 快速段中速度 Highspeedmidspeed 鎖模
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