Quick Mold Change System adopts four independent circuit of cross clamping to clamp the mold. Just replaces the traditional method which used the screw to fix the mold. QMCS really helps to save the time of mold changing and get more efficiency for multiple patterns and small quantity. 1.Each hydraulic circuit has the function of check and avoiding oil leaking. 2.This system can add pressure automatically when the pressure reduction. 3.Each hydraulic circuit has the function of inspection pressure and can be interlocked with the machine. 4.It adopts the intersecting direction to clamp the mold. 5.There are several functions to avoid operation error.