Mould opening and closing machine

The utility model relates to a mould opening and closing machine. The utility model has the essential structure that a lower seat is provided with an upright post; the center of the upright post is slidingly provided with a push plate; the upper end of the upright post is fixedly provided with an upper seat; two hand wheels are arranged on the upper seat in bilateral symmetry; each hand wheel is connected with a threaded rod slide block by a threaded rod in a screw connection mode; an upper seat shim plate is fixedly arranged on the upper side of the upper seat, and the threaded rod slide blocks penetrate through the upper seat shim plate and are exposed above the upper seat shim plate; a fixed mould fixing plate is arranged on the upper side of the upper seat shim plate; the fixed mould fixing plate is clamped by the threaded rod slide blocks; a push rod is connected to the push plate in a mode of horizontal slip; a movable mould fixing plate is supported by the push plate; an oil cylinder 7 is arranged on the lower side of the lower seat; the oil cylinder is connected with a piston rod and an oil inlet pipe; the push plate is arranged on the upper side of the piston rod; the upper side of the lower seat is also provided with a position limiting post; the top end of the position limiting post is the lowest point of the falling of the push plate. The utility model has the advantages that the mould does not need beating and pressing, and the centre of thrust of the mould can be automatically and correctly found. Because the utility model adopts oil pressure for force application, the mould can be steadily opened and closed.