注塑成型技術(shù)簡介-資料下載頁
2025-01-16 14:28本頁面
【正文】 的 .當(dāng)為克服流道的摩擦還使用高速度注塑時(shí) ,也可能引起摩擦燃燒 .2023/6/20 50By Eric GuoInjection Molding TroubleshootingSurface Burning of Parts 產(chǎn)品表面燃燒Ways to Minimize Surface Burning得到最小的表面燃燒的方法? Decrease the Stock Temperature? (降低料筒溫度 )? Decrease Injection Speed(降低注塑速度 )? Check Venting of the Mold? (檢查工模的排氣孔 )? Enlarge Gates(加大澆口 )? Check Sprue for Burning and/or Purge Shot(檢查燃燒的那個(gè)注入口或清理注塑機(jī)的料筒 )? Check Clamp Pressure(檢查鎖模壓力 )? Check Venting(檢查排氣孔 )? Decrease Injection Speed? (降低注塑速度 )? Decrease Injection Pressure? (降低注塑壓力 )? Check Stock and Mold Temperatures(檢查料筒和工模溫度 )2023/6/20 51By Eric Guo temperature of both mould halves 動(dòng)靜模的補(bǔ)償溫度2. observe mould for uniform part ejection 觀察產(chǎn)品頂出是否平衡3. check handling of parts after ejection from mould 檢查頂出的產(chǎn)品4. increase injection hold time 增加注塑保壓時(shí)間5. increase cooling time 增加冷卻時(shí)間6. increase or reduce injection pressure 增加或縮小注塑壓力7. increase mould close time 增加鎖模時(shí)間8. increase or reduce mould temperature 增加或減少模具溫度9. set differential mould temperatures to counteract warpage due to part geometry設(shè)置不同的模溫減弱部件形狀變形Warpage , part distortion 變形Injection Molding Troubleshooting2023/6/20 52By Eric Guo11. use shrink fixtures and jigs for uniform cooling of the part 使用收縮夾具均勻冷卻部件12. check gate locations and total number of gates to reduce orientation 檢查水口位置和水口總數(shù)減少變形13. additional gates may be required to overe overpacking or underpacking on large parts 增加水口數(shù)量，來滿足大型部件局部填充不足或過度填充造成的變形。14. Increase gate dimensions 增加水口尺寸15. change gate location if glassfilled, notice fibre orientation 如果填充玻璃物質(zhì) ,改變水口位置 ,注意纖維傾向16. redesign part to equalize wall variation in moulded part – heavy and thin walls in same part create differential shrinkage stresses 從新設(shè)計(jì)部件壁厚變化較大的部位。同一部件薄厚不同會(huì)增加縮水應(yīng)力。2023/6/20 53By Eric GuoWarpage Due to Uneven Thickness (變形對(duì)應(yīng)的厚度的不均勻變形對(duì)應(yīng)的厚度的不均勻 )Alternatives(可供選擇的辦法可供選擇的辦法 )2023/6/20 54By Eric GuoSprue注入口Runner流道Gate澆口 1 2 3Part產(chǎn)品Warpage From Uneven Pressure (變形對(duì)應(yīng)的壓力不均勻變形對(duì)應(yīng)的壓力不均勻 )FlowPressureTime3212023/6/20 55By Eric GuoWarpage Due to Uneven Pressure (變形對(duì)應(yīng)的壓力不均勻變形對(duì)應(yīng)的壓力不均勻 )Gate(澆口澆口 )High PressureLow Shrinkage(中心壓力高中心壓力高收縮率就低收縮率就低 )Low PressureHigh Shrinkage(周邊壓力低收縮率就高周邊壓力低收縮率就高 )Warped Result(結(jié)果引起結(jié)果引起 變形變形 )2023/6/20 56By Eric Guo注塑前準(zhǔn)備t機(jī)臺(tái)準(zhǔn)備炮桶是合適鎖模力是否足夠定位圈大小是否一致。模板是否夠大射嘴孔是否和模具入料口相配合是否需要清潔炮桶2023/6/20 57By Eric Guo注塑前準(zhǔn)備t原料烘幹。t是否須要烘幹（準(zhǔn)備合適的料鬥，和正確的烘料參數(shù)）t要不要加色粉或色種t要不要加水口料t模具準(zhǔn)備。t檢查模具是否完好t頂出裝置是否需要拉桿。t吊環(huán)是否合適t熱流道是否完好2023/6/20 58By Eric Guo注塑前準(zhǔn)備t架模接運(yùn)水管和模溫機(jī)接溫控箱接模具信號(hào)外接抽芯油壓機(jī)調(diào)整鎖模力2023/6/20 59By Eric Guo注塑前準(zhǔn)備t機(jī)器升溫清潔炮桶清潔模具檢查模具頂針頂出長度是否合適檢查抽芯裝置是否正常工作開合模具調(diào)整適當(dāng)?shù)拈_合模速度以及合適的低壓保護(hù)壓力根據(jù)產(chǎn)品的重量大小設(shè)置一個(gè)初步的成型參數(shù)。2023/6/20 60By Eric Guo注塑過程t手動(dòng)將模具鎖緊t回料t射座前進(jìn)t半自動(dòng)運(yùn)行（注意第一啤須減小射膠壓力，計(jì)量，以及保壓壓力）2023/6/20 61By Eric Guo演講完畢，謝謝觀看
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