FIELD: production of construction articles. SUBSTANCE: plant comprises bath with driving rotatable table having bottomless moulds uniformly arranged over periphery. The moulds have vertically movable inserts which are in contact with changeable bottom plates. Mechanism for feeding the changeable bottom plates with detaching member, charging unit with a hopper, box feeder and elevator mounted above the feeder, sealing unit, and a unit for dismounting forms are arranged in series about the rotatable table in the direction of rotation of the table. The top traverse of the bed is provided with stops which are in contact with the top faces of vertically movable inserts of the bottomless moulds through flexible linings. The sealing unit has force cylinder secured to the top traverse, the rod of the cylinder being secured to the top punch, and bottom punch arranged coaxially and provided with movable frame with vibration exciter. The frame bears on the bottom traverse, which is kinematically coupled with the force cylinder mounted on the bed, through flexible members. The height of vertically movable inserts exceeds the height of the moulds by 1.2-2.0. The total rigidity of the flexible members exceeds the total rigidity of the flexible linings by 1.8 times. EFFECT: improved design. 3 cl, 4 dwg
