反壓注塑發(fā)泡成型模具優(yōu)化設(shè)計
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中圖分類號：TG76 文獻標志碼：A
文章編號：1001-4934（2025）03-0048-06
Optimization design of counter-pressure injection foam molding mold
FANG Yongjie， GAO Yehan， LI Jinyue， LIU Saike， XUE Ningjun，LUO Bihui， CHEN Chen（Ningbo Fangzheng Automobile Mould Co. Ltd.，Ningbo 3156Oo， Zhejiang，China）
Abstract： This article proposes a set of counter-pressure injection foaming molding process and mold design optimization solutions to solve the manufacturing problems of automobile instrument panel injection molded parts with complex structures and high performance requirements. Through the pre-settng mesh cloth by the manipulator and the staged back pressure injection molding foaming process，the airbag area is injected first under the condition of 1mm mold gap，and the mechanical properties of the airbag area of the product are improved by the mesh cloth reinforcement effect and pressure gradient control. In view of the control requirements of the non-foaming area，a pneumatic ejector and cylinder drive spring block composite system is developed，and anti-foaming control is achieved through dynamic pressure compensation. According to the characteristics of the mold structure， different water channels are designed on both sides of the mold，and 3D printing water channels and beryllum copper inserts are designed in the airbag area to ensure the consistency of the overall cooling of the injection molded parts. Through the above mold process optimization and mold structure design， high-quality and high-performance molding of complex parts of automobile instrument panels is achieved.
Key words： injection foam molding；automobile instrument panel; injection molding process optimization；mold structure design
0 引言
隨著汽車、航空航天、電子等行業(yè)對高性能、輕量化產(chǎn)品的需求不斷增加，新型材料不斷涌現(xiàn)，如高性能工程塑料、纖維增強復(fù)合材料等[1-3]。（剩余6058字）