STIFF-PLASTIC MACHINE Russian patent published in 1997 - IPC

FIELD: manufacture of building materials, in particular, equipment for dry-press process of brick molding. SUBSTANCE: machine includes power frame with upper and lower plates and hydraulic drive, horizontal table with mold and loading box, bin, hole-forming cores and toggle with two opposite-located power hydraulic cylinders. Punch is made in form of piston with rod and moved over posts of power frame by pusher with axial hole in receiving punch piston rod. Machine is provided with single-acting cylinder mounted inside power frame and additional two toggles. In this case, single-acting cylinder is hinged with upper plate and punch piston rod. Each additional toggle is made in form of two levers interconnected with each other and with power hydraulic cylinder by means of hinge. The other ends of these levers are hinge to pusher and upper plate. EFFECT: higher efficiency. 1 dwg