AUTOMATIC MOLDING MACHINE FOR MAKING DISPENSABLE SAND MOLDS Russian patent published in 1994 - IPC

FIELD: foundry practice. SUBSTANCE: machine comprises rotary table with brackets which carry pattern plates and flasks. Weighing batching hopper installed on upper crosspiece is linked by rod with an electromagnetic setter adjusting the dose of molding sand. Crosspiece also carries pneumatic cylinder of pressing mechanism with a plate, plate travel transmitter connected with said plate via a system of levers. Setter output is connected across converter with computing command unit whose control outputs are connected across amplifiers to pneumatic cylinder control system and to setter. This connection provides for automatic adjustment of sand dose and pressing force on changes in properties of molding sand. EFFECT: higher productivity of machine, improved quality of molds, economy of molding sand and power consumed during sand compaction. 6 dwg