光固化注塑模模芯建造方式的优化研究  

Study on optimization of mold core build mode for stereolithography injection mold

作　　者：王永信[1] 冯路开 梁晋[3] 刘光辉[2] 吴华英[1] 赵蒙[2] 

机构地区：[1]西安交通大学快速制造国家工程研究中心,陕西西安710049 [2]西安交通大学材料科学与工程学院,陕西西安710049 [3]西安交通大学机械制造系统工程国家重点实验室,陕西西安710049

出　　处：《锻压技术》2015年第11期77-81,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51421004;51275378;51275389);中央高校基本科研业务费专项资金资助;广东省公益研究与能力建设专项资金资助(0104三维人体快速扫描系统的研发)

摘　　要：光固化注塑模模芯在脱模过程中极易发生拉伸破坏现象,从优化模芯强度出发,采用标准拉伸试样代替模芯,进行最优模芯强度的选择,以达到提高模芯寿命的目的。以C-UV 6651耐高温树脂为材料原型,通过光固化制作不同建造方向和分层厚度的标准拉伸试样,并对拉伸试样的拉伸强度进行对比分析。最终,实验验证了光固化成型方式制作的试样呈各向异性,确定了光固化拉伸试样的最佳建造方向为与拉伸方向平行,最佳分层厚度为0.05 mm。可将该实验结果应用于模芯制造中,以0.05 mm分层厚度和脱模方向建造模芯,以获得高强度、长寿命的模芯。Tensile failure occurs easily in demoulding process of mold core for stereolithography injection mould. The selection of optimization mould core strength was conducted to improve the life of mould core by the standard tensile samples replacing mould core based on optimization mould core strength. The C-UV 6651 high temperature resistant resin was used as prototype material,standard tensile samples with different build orientations and layer thickness were produced and the tensile strength of the samples was analyzed. Finally,it is verified that the samples produced by stereolithography are anisotropic with the best build orientation of the sample parallelling to the stretch orientation and the best layer thickness of 0. 05 mm. The experimental result can be applied to manufacture mould,and the mould core built in the direction of demoulding with the layer thickness of 0. 05 mm can obtain higher strength and longer life.

关 键 词：光固化 快速模具 注塑模 建造方式 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]