注塑成型與模具知識(ppt31)-五金塑膠-資料下載頁
2025-08-05 21:03本頁面
【導(dǎo)讀】機(jī)器注塑容量(理論):查機(jī)器參數(shù).PM-----------使用原料比重.F-------產(chǎn)品所需鎖模力.D應(yīng)比機(jī)臺噴嘴直徑d大1mm.比對機(jī)臺與模具定位環(huán)尺寸.Sk--------注塑機(jī)模板全開距離.5~10mm—安全距離,當(dāng)使用機(jī)械手時需取30~50mm.螺桿在料管內(nèi)旋轉(zhuǎn),將從料斗來的塑膠卷入,積存熔體達(dá)到一次注射量時,螺桿停止移動.當(dāng)螺桿停止移動,在液壓缸或機(jī)械力作用下,推動螺桿前進(jìn)使熔體通過噴嘴注入模具.續(xù)擠入模腔,熔體密度提高.
【正文】 lt Required to Fill Mold Ready for Injection Shot Injection Pressure 注射壓力 將要注入模具內(nèi)的熔體 (3 ~5mm for PC) g Injection Molding Variables Cushion Cushion Material remaining in barrel when the ejection phase is pleted. 注過程結(jié)束后，殘于料筒前端的熔體 The injection molding process should allow a cushion to provide sufficient packing pressure in the mold 緩沖墊 注過程必須要有緩沖墊以保證有效的保壓 g REGRIND SUGGESTIONS ? Use Only Clean Nondegraded ? Uncontaminated Resin for Regrind ? Keep It As New Material ? Normally 20% of Regrind can be Used ? Screen Sizes should be 7 to 9 mm Injection Molding Regrind 對材料回收使用的建議 ?只使用未降解材料 ?回收料不能有污染 ?要象保存新料一樣 ?通常允許添加 20%的回收料 ?過濾網(wǎng)應(yīng)該在 7至 9MM g Injection Molding Closing Ten Do for Molding Engineering Resins ? Know Your Material 了解你所使用的材料 ? Dry Properly 正確地干燥 ? Use Remended Processing Conditions 使用推薦的加工參數(shù) ? Use Properly Sized Equipment 選擇恰當(dāng)?shù)脑O(shè)備 ? Use Properly Designed Tooling 正確設(shè)計模具 ? Use Adequate Runners 澆口尺寸充分 ? Use Proper Venting 良好的排氣 ? Use Nozzles with Proper Heat Controls 對噴嘴施以良好的溫控 ? Use Proper Screw Design 恰當(dāng)?shù)穆輻U結(jié)構(gòu) ? Schedule Annual or BiAnnual Equipment Maintenance 正確維護(hù)保養(yǎng)設(shè)備 十大準(zhǔn)則
醫(yī)療健康相關(guān)推薦
鄂ICP備17016276號-1