upper and lower adjustable molds 4 are set to be arranged in the same way the central lines of the longitudinal section of the upper and lower molds 4 are set to be on the same vertical line thus ensuring the manual supporting of the upper and lower square rams 1 fig7 is the schematic view of the curved surface forming device for adjustable segmented mold board with square rams the curved surface forming device for adjustable segmented mold board with square rams comprises 1 u2014 square rams 2 u2014 supporting body 3 u2014 fixing frame 4 u2014 adjustable mold and 6 u2014 pressing machine the loading mechanism in this embodiment is pressing machine 6 the supporting body 2 with a group of square rams 1 is mounted in the fixing frame 3 to form the upper and the lower adjustable molds 4 the lower adjustable mold 4 is installed on the base 6 a of the pressing machine 6 the upper adjustable mold 4 is installed on the movable cross beam 6 b of the pressing machine 6 the movable cross beam 6 b is connected with the pressure imposition oil cylinder 6 d installed on the upper beam 6 c driven by the pressure imposition oil cylinder 6 d the upper adjustable mold.