内外侧多向抽芯的化妆盒上盖注塑模设计.pdfVIP

第44 卷，第 12 期 工 程 塑 料 应 用 Vol.44 ，No.12 76 2016 年 12 月 ENGINEERING PLASTICS APPLICATION Dec. 2016 doi:10.3969/j.issn.1001-3539.2016.12.015 内外侧多向抽芯的化妆盒上盖注塑模设计 曹亚玲 ( 无锡太湖学院，江苏无锡 214064) 摘要：针对内侧带有卡扣倒钩，外侧带有销钉孔的化妆盒上盖的成型工艺特点，设计了一种内外侧多向抽芯的斜 顶注塑模具，采用了一模两腔的型腔布局形式。为避免产品外观出现浇口痕迹等缺陷，采用了潜伏式浇口，以保证表 面质量，内侧卡扣与倒钩的抽芯由斜顶驱动，采用内置弯销完成销钉孔抽芯，使用定位珠对滑块进行可靠定位。模具 结构紧凑，降低了模具制造成本。经实践检验，该模具结构合理、塑料件质量稳定，具有良好的经济效益。 关键词：化妆盒上盖；多向抽芯；注塑模；潜伏式浇口 中图分类号：TQ320.66 文献标识码：A 文章编号：1001-3539(2016)12-0076-04 Design of Injection Mold for Powder Box Top-Cover with Internal and External Multidirections Core-Pulling Cao Yaling (Taihu University of Wuxi ， Wuxi 214064 ， China) Abstract ：According to the characteristics of injection molding process for the powder box s top-cover with a bayonet inside and pin outside ，an angle ejector of injection mold internal and external multidirections core pulling was designed. The layout of one module and two cavities was determined. Submarine gate mechanism was used to ensure the surface quality of plastic parts with no defects such as gate marks. The inclined ejector mechanism was designed to drive the core pulling of snap-fit. The internal dog-leg cam drived the core pulling of the pin hole. The ball plunger was used to positioning the sliding block reliably. The mold structure is compact and reduced the cost. It is proved by practice that the mold structure is reasonable and quality of plastic parts are stable. Keywords ：powder box top-cover ；multidirection core-pulling ；injection mold ；submarine gate 1 塑料件工艺分析 (65 ±