Analysis And Simulation Of Injection Molding Machine Based On Hybrid-driven Mechanism

All-electric injection molding machine is the equipment to complete the injection process by motor driving ball screw, belt pulley and gear pair mechanism. In recent years, with the rapid development of plastic industry, the use of ail-electric injection molding machine has been greatly popularized, the performance requirements of all electric injection molding machine is more and more high. Product small batch, large size makes the industry on the whole electric injection molding machine mold clamping mechanism of the performance of a larger clamping force, shorter operation cycle, more flexible output characteristics. Hybrid drive mechanism is a kind of mechanical system with controllable flexible output, which provides a feasible solution for the product upgrade of all electric injection molding machine. In this paper, a model SZ-400 all electric injection molding machine as the research object, using MATLAB to all electric injection molding machine clamping mechanism structure design and optimization analysis, repetitive control was used to compensation PID compute the modeling design of mold structure of control system, the joint simulation of Adams and Simulink, on integrated mold structure optimization analysis is validated by simulation. In this paper, following key issues are studied:Optimization design of hybrid driving and clamping mechanism. Through the dynamic template of the mold closing mechanism summary, the use of MATLAB optimization toolbox on the geometric parameters of the mold closing mechanism and the output of the servo motor optimization. Due to the coupling properties of the hybrid driving and clamping mechanism, the optimal solution can be approached by multi-step optimization. Through the inverse and forward kinematics analysis steps. First of all, to establish minimum servo motor output acceleration minimum as the objective function of the nonlinear differential equations, the solution of the optimization of the rod geometry parameter fluctuations; then through the establishment of dynamic template output error of minimum mean square as the target function get servo motor output rules.Design of the control system of the hybrid driving and clamping mechanism. Control system design is the system errors of control, in a hybrid drive system model are linear and non-linear error factors and disturbance, the repetitive control compensation PID algorithm, based on genetic algorithm of hybrid driven mold structure of PID controller parameter tuning has arrived in moving die template system of high precision motion.Through the joint simulation of Adams and Matlab/Simulink, a hybrid-drive close mold mechanism dynamics model, then by ADAMS / Controls module clamping mechanism of dynamic mathematical modeling, and added to the hybrid-driven synthetic simulation system control model, and the sections of the optimization analysis were carried out to verify the results of simulation.