CASTING MOLD FOR MANUFACTURE OF UNDERCUT ARTICLES Russian patent published in 2005 - IPC

FIELD: foundry, in particular, designing of casting molds for manufacture of undercut articles arranged at different inclination angles with respect to axis of mold.

SUBSTANCE: casting mold has movable and immovable parts. Movable part has die with working cavity and channels, forming members located in die channels for displacement therein, device for moving forming members, and plate with pushers. Device for moving of forming members is single for all forming members and comprises slide with columns, rods and balance beams. Slide has profiled arched surface. Columns are equipped with guiding slots and are rigidly fixed in movable part perpendicular to mold detachment plane. Rods are provided with springs and abut with their one ends into immovable part of casting mold and connected with their other ends to slide. Forming members are equipped with flexible members and rest upon profiled arched surface of slide through semi-spherical thrust-bearings. Die channels are arranged at angles of from 0 deg to 30 deg to axis of casting mold. Such construction provides for simultaneous and synchronous displacement of forming members upon opening and closing of casting mold parts to allow casting of articles having up to 70 undercuts arranged at angles of from 0 deg to 30 deg to axis of casting mold.

EFFECT: increased efficiency in manufacture of undercut articles.

1 dwg