注塑成型流程及常用模具结构

(87页)

'注塑成型流程及常用模具结构'
Injection Molding(注塑成型)Injection molding makes possible mass production of intricate, high performance, tight tolerance parts with very little secondary labor and minimal waste. (注塑機能在占次要地位的人的工作下大批量的生產復雜的,高性能的,公差 小的產品,而且壞品少)Injection Molding Parts(注塑成型的產品) Detailed Parts Including Ribs, Holes, and Bosses (詳細的部件包括加強筋,孔和突起)Injection Molding Parts (注塑成型的產品) Small Parts with Tight Tolerances (較小公差的小尺寸產品)Injection Molding Parts (注塑成型的產品) Larger Parts: Car Fender (長的產品:汽車的擋泥板)Injection Molding (注塑成型) Material(原料) Tooling(工模) GOOD PART (好的產品) Processing(工藝) Design(設計) Injection Molding Advantages(注塑機的優勢) 高的生產效率High Production Rates( ) Minimal Scrap Loss(很小的壞品損失)Large Volume Production Possible Tight Tolerances Can Be Maintained大地的生產能力( ) (能維持很小地公差) 低的人工Low Labor Cost( ) Molded-in Inserts Available 容易實行自動化操作Easily Automated( ) (工模內可以利用鑲件)Minimum Secondary Operations Glass, Carbon, etc. Fillers少的二次加工( ) Complex Part Capability(有生產復雜產品的能力)Permits Very Small Parts Good Decoration Possible(優良的裝鈽能力)(允許生產很小的產品)Injection Molding Disadvantages (注塑成型的缺點) Tooling Costs are High(高的模具費用) High Machinery and Auxiliary Costs (高的機器和輔助設備的費用) High Pressure Process(高壓工藝) Limited Large Part Capability(能生產的產品,大是有限的)Injection Molding (注塑成型) Injection Molding Process(注塑成型工藝)?Drying the Pellets(膠珠的烘干)?Loading Into Molding Machine(將膠珠 裝入注塑機內)?Heating and Shearing Material Into a Melt?(加熱和剪切原料至其塑化)?Injecting the Melt Into the Mold Cavity(將塑化的膠料射入模腔內)?Part Cooling, Solidification(產品冷卻,凝固)?Ejecting the Finished Part From the Mold(將完成的產品從工模內頂出)Injection Molding Process (注塑成型的工藝) Loading of pellets through the Hopper (在料桶裝入膠珠) Injection Molding Process (注塑成型的工藝) Drying the Pellets(膠珠的烘干) Engineering Thermoplastic Pellets Absorb Moisture During Manufacturing, Transportation, and Storage. 工程熱塑性膠珠在制造,運輸,儲存的過程中會吸收濕氣 Pellets Not Dried May:(不需要烘干的膠珠:)? Produce Substandard Parts in Terms of Surface Appearance and Property Performance? (生產的產品外觀要求在條款之下和有特殊性能的)? Cause Series Inconsistency During Processing? 烘干工藝會導致一系列變化的Injection Molding Process (注塑成型的工藝) Drying Removes Moisture (烘干除濕氣) H O H2O 2 Moisture Migrates out of Pellet When Exposed to Dry Air. H2O (當暴露在干燥地空氣中時濕氣就會從膠珠中移除) Injection Molding Process (注塑成型的工藝)Locked Stiff Flow(流動困難) Easier Flow(流動容易)Entanglemen ts(相互糾纏) TG RaRisaeis Tee Tmempepreartautruer oe fo Pf oPloymlymerer (提高聚合物的溫度) Adding Heat Increases Space Between Molecular Chains(升高溫度增大分子鏈之間的空間)Injection Molding Process (注塑成型的工藝) Heating and Melting the Material ? Conversion of Mechanical Energy by Shearing the Plastic ? (注塑機螺杆在旋轉過程中和塑 料剪切產生的能量) ? Conduction of Heat From the Heater Bands Through the Barrel and Into The Resin 加熱圈的熱量通過桶傳入到塑料里Heater Coils on the Screw Barrel ?(在螺杆桶上的加熱圈)Injection Molding Process (注塑成型的工藝) Injection Flow (注塑流程)Injection Molding Process (注塑成型的工藝) Injection Flow (注塑流程)Injection Molding Process (注塑成型的工藝) Injection Flow (注塑流程)Injection Molding Process (注塑成型的工藝) Injection Flow (注塑流程)Injection Molding Process (注塑成型的工藝) Injection Flow (注塑流程)Injection Molding Process (注塑成型的工藝) Part Cooling and Solidification (產品的冷卻和凝固) Hot Melt Solid Part 受熱塑化 堅實的產品 Cooled Mold(冷的工模)Injection Molding Process (注塑成型的工藝) 1 Part Ejection(產品被頂出) 2 plate mold example(盤子模塑實例) 2 Knock-out pins eject the part 3 from the mold. (頂針將產品從工模中頂出)Injection Molding Process (注塑成型的工藝) Simplified Pressure History - Injection Molding 簡化的注塑成型壓力歷史記錄 P r Filling Packing Cooling Ejection e s s u r e TimeInjection Molding Process (注塑成型的工藝) Important Process Variables (重要的工藝變量)
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