Mold making machine having vibrator for removing pattern plate from prepared mold

A mold making machine having a pattern plate and a pair of flasks which are superposed on each other such that said pattern plate is interposed between said flasks, said pattern plate having an integrally formed pattern and cooperating with said pair of flasks to define two mold cavities for forming two sections of a casting mold, said mold making machine comprising:

• at least one pattern-plate removing mechanism each including a vibrator supported by one of said pair of flasks, and support means provided on said one of said pair of flasks, for supporting said vibrator such that said vibrator is movable in a direction in which said pattern plate and said pair of flasks are superposed on each other,
• said support means including (a) a positioning sleeve fixed to said one of said pair of flasks such that said positioning sleeve extends in said direction, (b) a mounting rod which is connected at one end thereof to said vibrator and extends through said positioning sleeve, and (c) biasing means defined by a coil spring disposed around said mounting rod and interposed between said positioning sleeve and said vibrator, said coil spring biasing said vibrator against said pattern plate in said direction, such that said vibrator is movable with said mounting rod being movable through said positioning sleeve, so that a vibrating force of said vibrator is transmitted to said pattern plate upon operation of said vibrator, to thereby remove said pattern plate from said sections of the casting mold prepared, and from said one flask, said support means preventing said vibrating force from being transmitted to said one flask.