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AssigneeZakrytoe Aktsionernoe Obschestvo "Litaform"
InventorsAnatoly Alexandrovich VOLKOMICH, Rudolf Rudolfovich LUTTS, Nikolay Ivanovich BEKH
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A method of pulsed-air compacting of mold-sand in combination with compacting by compression supplements the pulsed-air compacting of the mold-sand by an operation of re-compacting the mold-sand by pressing which is performed with the pattern plate containing the patterns by the plate moving inside the cavity of the filling frame in the direction of the latticed pressing element which is subjected to a counter-pressure force corresponding in its value to the prescribed level of the half mold compaction. The method is realized with a device in which the pattern plate containing the patterns is mounted with the possibility of a reciprocal motion inside the cavity of the filling frame, and the pressing cylinder is mounted with the possibility to apply a force against the movable pattern plate.
A method for the manufacture of casting molds, comprising an operation of filling with mold-sand of a casting box and of a filling frame containing patterns mounted on a pattern plate, an operation of pulsed-air compacting of the mold-sand by the action of compressed air passing through a movable, elastically mounted latticed pressing element, an operation of re-compacting the mold-sand by pressing and an operation of pattern pulling-through from the half molds, wherein the re-compacting by pressing is performed with the pattern plate containing the patterns by means of the plate moving inside the cavity of the filling frame in the direction of the latticed pressing element which is fixed in the low position before and during the pressing operation and is subjected to a counter-pressure force corresponding in its value to the prescribed level of the half mold compaction.
A device for the manufacture of casting molds, comprising a base, a pressing cylinder, a molding table, a filling frame, a pattern plate with patterns, a pulsed-air head mounted above the molding table and linked to a compressed air supply system, a movable latticed pressing element mounted in the lower part of the pulsed-air head with the use of an elastic fixture, and a mechanism for filling with mold-sand the filling frame and the casting box, in which the filling frame is built-in into the molding table and is made with the possibility to place on it molded casting boxes and to take them away, the pattern plate with the patterns being mounted with the possibility of a reciprocal motion in the cavity of the filling frame, and the pressing cylinder is mounted with the possibility to apply a force to the movable pattern plate, the device being additionally provided with one cylinder or with a system of interrelated cylinders fixing the latticed pressing element in the low position and linked to pressure sources located on a traverse in the way to enable their extended rods to apply a force to the pressing element elastically mounted on the traverse for providing a counter-pressure force.
Dependencies are inferred from the claim text.