基于虚拟样机的注塑机合模机构锁模精度分析  

Analysis of Clamping Accuracy of Clamping Mechanism for Injection Molding Machine Based on Virtual Prototype

作　　者：许峥嵘 董凌波 柳丽[1] 娄军强[1] 傅南红 李国平[1] 陈星欣 XU Zhengrong;DONG Lingbo;LIU Li;LOU Junqiang;FU Nanhong;LI Guoping;CHEN Xingxin(Faculty of Mechanical Engineering&Mechanics,Ningbo University,Ningbo 315211,China;Demag Plastics Machinery(Ningbo)Co.,Ltd.,Ningbo 315010,China;Haitian Plastics Machinery Group,Ningbo 315800,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]德马格塑料机械(宁波)有限公司,浙江宁波315010 [3]海天塑机集团有限公司,浙江宁波315800

出　　处：《塑料工业》2023年第2期68-72,89,共6页China Plastics Industry

基　　金：宁波市“科技创新2025”重大专项科技攻关项目(2018B10082)。

摘　　要：合模机构是注塑机重要部件,其性能直接影响注塑制件的质量、效率以及注塑设备的寿命等。结合Solidworks和ADAMS软件,建立合模机构虚拟样机并进行动动力学分析,研究考虑弹性变形后合模机构的运动性能、锁模精度及其与驱动速度大小和启动加速时长的变化规律。对比多刚体系统与刚柔耦合系统仿真结果,刚柔耦合系统在启动初始阶段由于惯性冲击产生速度波动现象,动模板最大质心加速度出现时间早于刚性系统,且加速度峰值高更高;驱动速度大小及启动加速时长明显影响合模机构锁模精度,提升合模速度会降低锁模精度。实际工况中,可根据锁模精度要求合理选择驱动速度。分析结果具有一定的工程应用价值。The clamping mechanism was an important part of the injection molding machine,and its performance directly affected the quality and efficiency of the injection molded parts and the life of the injection molding equipment.Combining with Solidworks and ADAMS software,a virtual prototype of the clamping mechanism and conducts dynamic dynamics analysis was established,and the kinematic performance and clamping accuracy of the clamping mechanism after considering elastic deformation were studied.Comparing the simulation results of the multi-rigid body system and the rigid-flexible coupled system,the rigid-flexible coupled system produced velocity fluctuations due to inertial impact in the initial stage of startup.The maximum centroid acceleration of the moving template appeared a little earlier than that of the rigid system,and the acceleration peak was higher.The driving speed the size and start-up acceleration time obviously affected the clamping precision of the clamping mechanism,and increasing the clamping speed could reduce the clamping precision.In actual working conditions,the driving speed could be reasonably selected according to the requirements of the clamping accuracy.The analysis results have certain engineering application value.

关 键 词：合模机构 虚拟样机 动力学 刚柔耦合 锁模精度 

分 类 号：TQ320.66+2[化学工程—合成树脂塑料工业]