Tiger-mouth hydraulic press is suitable for the pressing process of plastic materials, such as stamping, bending, flanging, sheet metal, stretching, etc. It can also be used for correction, press fitting, grinding wheel forming, cold extrusion of metal parts, pressing and forming of plastic products and powder products.The four-column hydraulic press has independent power mechanism and electrical system, and adopts button concentration.It can realize the three kinds of operation mode of adjustment, manual and semi-automatic; operation mode of four-column hydraulic press working pressure, pressing speed, stroke range can be adjusted according to the needs of the process. In addition, it can complete two technological modes of constant pressure and constant distance molding. The technological mode of constant pressure molding has pressure maintaining and delayed automatic return after pressing.