电加工与模具
電加工與模具
전가공여모구
ELECTROMACHINING & MOULD
2014年
5期
37-40
,共4页
二次顶出%斜刃凸模%精确冲切%进料口%精密注塑模具
二次頂齣%斜刃凸模%精確遲切%進料口%精密註塑模具
이차정출%사인철모%정학충절%진료구%정밀주소모구
secondary ejection%punch with inclined blade%precise die -cut%gate%precision injection mold
对于技术要求较高的精密塑料产品，因所使用的材料强度较大，产品注塑时采用侧向进料口进料，成形后浇注系统剪切困难，且易损坏产品和浇注系统，达不到客户的要求。利用注塑模具二次顶出，借用冲压模具原理，设置斜刃凸模精确冲切进料口，从而实现塑料产品和浇注系统的精确分离，确保产品外观、尺寸精度及形位公差的要求。
對于技術要求較高的精密塑料產品，因所使用的材料彊度較大，產品註塑時採用側嚮進料口進料，成形後澆註繫統剪切睏難，且易損壞產品和澆註繫統，達不到客戶的要求。利用註塑模具二次頂齣，藉用遲壓模具原理，設置斜刃凸模精確遲切進料口，從而實現塑料產品和澆註繫統的精確分離，確保產品外觀、呎吋精度及形位公差的要求。
대우기술요구교고적정밀소료산품，인소사용적재료강도교대，산품주소시채용측향진료구진료，성형후요주계통전절곤난，차역손배산품화요주계통，체불도객호적요구。이용주소모구이차정출，차용충압모구원리，설치사인철모정학충절진료구，종이실현소료산품화요주계통적정학분리，학보산품외관、척촌정도급형위공차적요구。
For some high requirement precision plastic products,in whose ejecting,side gate is used to provide material,after forming pouring system is difficult to be sheared because of high material strength,they will be damaged easily while the gating system is sheared off. Based on secondary ejection structure,punch of inclined blade,which is often designed on stamping and punching die,is adopted to die-cut side gate. In this way ,link point between plastic products and pouring system is separated precisely. And product appearance ,dimensional and geometric tolerance requirements are realized accurately.
