Computer optimized design, four pillar type construction is simple, economic and practical; Frame type rod pre-load structure rigidity, the four eight side guide rail, orientation precision, partial load resistance is strong; Hydraulic control USES the cartridge integrated system, reliable operation, long service life, small hydraulic impact, reduced the connecting line and leak; Imported PLC control of the electrical system, the structure is compact, sensitivity and reliable work, convenient use and maintenance. Has the adjustment, manual, semiautomatic three kinds of operation mode, which can realize fixed distance and constant pressure molding process adjustment. Sill is equipped with a hydraulic cushion inside, through the choice of operation panel, hydraulic cushion can be achieved with ejection, no ejection and hydraulic cushion and three work cycle.