Through the analysis of molding process of large-scale plastic hollow containers, this
paper carries on the simulation and optimization of hydraulic system, which focuses on the high
energy consumption problem of large-scale blow molding machine. According to the characteristics
of long work period and great fluctuation of flow demand, the paper designs the oil supplying system
that can match the actuators’ hydraulic energy demand, introduces the working process of each
component in the system, and analyzes the key technology of hydraulic system as well. The design
and research avoids the shortcomings such as more components, complex debugging, discontinuous
control and unstable operation, substantially reduces the installed capacity of variable pump and
driving motor, and in the meantime, solves the impact problem of actuators effectively, which can
make hydraulic system high efficiency, energy saving and run steadily