注塑机开模过程液压冲击与振动测试分析

Test and Analysis of Hydraulic Shock Vibration in Opening Process of an Injection Molding Machine

针对肘杆式液压注塑机开模过程中存在的液压冲击现象,为减小开模时振动冲击对注塑机的影响以及更好地对开模过程的振动冲击进行控制,根据注塑机的工作原理,设计了压力与振动实验测试分析系统,测试了不同压力、流量参数时,动模板的位移、合模油缸及泵出口压力、流量,以及动模板的振动加速度等参数;根据实验测试的结果,分析了压力、流量等参数对冲击振动及运动周期的影响规律,为注塑机工作参数的合理设置与优化提供了理论支撑。

Hydraulic impact occurs during the mold opening process of the toggle-type hydraulic injection molding machine. In order to reduce the influence of vibration shock on the injection molding machine and better control the vibration shock of the mold opening process, the pressure and vibration experimental test and analysis system is designed according to the working principle of the injection molding machine. Under different pressure and flow parameters, this paper tests the displacement of the movable platen, the clamping cylinder and pump outlet pressure, the flow rate and the vibration acceleration of the moving platen. According to the results of experimental tests, the influences of pressure, flow and other parameters on impact vibration and motion cycle are analyzed, which provides theoretical support for the reasonable working parameter setting and optimization of injection molding machine.