MULTIPLE-CAVITY CASSETTE-TYPE MOLD FOR MANUFACTURING ARTICLES FROM CONSTRUCTIONAL MIXTURES Russian patent published in 1994 - IPC

FIELD: construction industry. SUBSTANCE: cassette-type mold has pallet 1 with stop 2 and clamping device 3. A pack of vertical flexible walls 4 with sides 5 is disposed between clamping device 3 and stop 2 to define molding sections 6, each provided with tray-shaped bottom 7 and removable die 11. One longitudinal side of bottom 7 is rigidly connected with its middle portion to separating wall 4 and end portions may be bent aside. Sides 5 and separating walls 4 disposed outside molding zone are provided with rigidly ribs 7 disposed in symmetry along height of sides and protrusions 9 disposed adjacent to free ends of sides 5. Sides 5 are received in slots 8 of adjacent separating wall. End portions of bottom 10 has recesses 12 disposed in the vicinity of places, where they adjoin to wall 4, and mutually conjugated protrusions 13 disposed in the vicinity of places, where they adjoin to adjacent section. When hollow articles are manufactured, molding sections are provided with cavity-forming members 14 in the form of hollow truncated cones or prisms with shanks 15 disposed adjacent to cone small base. Separating walls 4 have openings 16 for retaining shanks 15. Collars 17 are disposed externally of separating walls. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 cl, 6 dwg