Through computer optimization design, the four column structure is simple, economical, and practical; The frame structure has good rigidity, high precision, and strong resistance to eccentric loads; The hydraulic control system adopts a plug-in integrated system, which is reliable in action, has a long service life, has low hydraulic impact, and reduces the connection of pipelines and leakage points; The electrical system controlled by imported PLC is compact in structure, sensitive and reliable in operation, and easy to use and maintain. It has three operating modes: adjustment, manual, and semi-automatic, as well as two molding process specifications: fixed range and fixed pressure. The bottom beam is equipped with hydraulic pads, which can be selected through the operation panel to achieve three working cycles: with top out, without top out, and with hydraulic pad edge pressing.