工程塑料应用
工程塑料應用
공정소료응용
Engineering Plastics Application
2015年
9期
49-53
,共5页
注射成型%困气缺陷%流动分析%模具结构改进
註射成型%睏氣缺陷%流動分析%模具結構改進
주사성형%곤기결함%류동분석%모구결구개진
injection molding%air trap defects%flow analysis%mold structure improvement
以注塑制品手机壳体为例，针对困气缺陷，利用Moldflow模拟熔体流动和熔接痕的形成机理，分析导致困气缺陷的原因。从模具和制品结构入手，提出前模增加排气镶块、修改制品料厚、困气区域增加浇口、增加辅助浇口等4种消除困气缺陷的解决方案，并详细介绍了每个方案的内容。通过对比分析，增加一个辅助浇口，将熔体汇聚位置转移到易排气的反插骨位置是优选方案，经过试模生产，较好地消除了困气缺陷，提高了制品质量。
以註塑製品手機殼體為例，針對睏氣缺陷，利用Moldflow模擬鎔體流動和鎔接痕的形成機理，分析導緻睏氣缺陷的原因。從模具和製品結構入手，提齣前模增加排氣鑲塊、脩改製品料厚、睏氣區域增加澆口、增加輔助澆口等4種消除睏氣缺陷的解決方案，併詳細介紹瞭每箇方案的內容。通過對比分析，增加一箇輔助澆口，將鎔體彙聚位置轉移到易排氣的反插骨位置是優選方案，經過試模生產，較好地消除瞭睏氣缺陷，提高瞭製品質量。
이주소제품수궤각체위례，침대곤기결함，이용Moldflow모의용체류동화용접흔적형성궤리，분석도치곤기결함적원인。종모구화제품결구입수，제출전모증가배기양괴、수개제품료후、곤기구역증가요구、증가보조요구등4충소제곤기결함적해결방안，병상세개소료매개방안적내용。통과대비분석，증가일개보조요구，장용체회취위치전이도역배기적반삽골위치시우선방안，경과시모생산，교호지소제료곤기결함，제고료제품질량。
Taking plastic injection products phone shell as an example,the cause of air trap defects was analyzed by use of Moldflow in simulating melt flow and formation mechanism of weld mark. Four solutions of eliminating air trap defects were proposed from mold and product structure,such as adding venting insert on front-mold,modifying the thickness of product,adding one gate on air trap region,adding one auxiliary gate,and the contents of each solution was introduced in detail. The solution of adding one auxiliary gate is the optimization by contrast analysis,position of the melt together is transferred to reverse-insert bone location where is easy to venting. Air trap defects are better eliminated and the quality of the products is improved via the experiment of injection molding.
