Abstract: A molded product production system includes a powdery material mixing and feeding device configured to feed mixed powdery materials including at least two types of powdery materials, a filler configured to fill, with the mixed powdery materials fed by the powdery material mixing and feeding device, a die bore of a compression-molding machine, a sensor configured to measure a mixing degree of the mixed powdery materials fed by the powdery material mixing and feeding device, and a molded product removal mechanism configured to distinguish a molded product obtained by compression molding mixed powdery materials having a mixing degree measured by the sensor out of a predetermined range from a molded product obtained by compression molding mixed powdery materials having a mixing degree within the predetermined range.

Abstract: A controller of a rotary compression-molding machine is configured to rotate a turret including a table including a die bore, and punch retaining portions vertically slidably retaining punches disposed above and below the die bore along with the punches, and to fill the die bore with a powdery material from a filling device disposed just above the table, to compress the powdery material filled in the die bore with the punches and to obtain a molded product. The controller is configured to adjust rotational speed of the turret and the punches to allow the powdery material in a feed pipe, directly connected with the filling device and configured to feed the filling device with the powdery material, to have a level of an upper surface kept within a constant target range.

Abstract: A powdery material mixing degree measurement device includes a discharger configured to discharge mixed powdery materials to a filler configured to fill, with the powdery materials, a vertically penetrating die bore of a compression-molding machine including a table including the die bore, a slidable lower punch including an upper end inserted to the die bore, and a slidable upper punch including a lower end inserted to the die bore, a plurality of movable portions configured to move the mixed powdery materials to the discharger, and a sensor configured to measure a mixing degree of the mixed powdery materials in the movable portions.

Abstract: A powdery material mixing and feeding device is configured to mix at least two types of powdery materials and to feed a compression-molding machine with the mixed powdery materials. The powdery material mixing and feeding device includes a first mixer configured to rotate about a substantially vertical shaft and to mix the powdery materials, and a reservoir configured to reserve at least a part of the powdery materials, and a second mixer configured to rotate about a substantially horizontal shaft and to mix the powdery materials.

Abstract: A powdery-material feeding device includes a hopper configured to reserve a powdery material, a transfer member configured to deliver and to discharge the powdery material fed from the hopper, a motor configured to drive the transfer member, a measuring instrument configured to measure a discharge amount of a powdery material delivered to be discharged by the transfer member, and a controller configured to control, while control according to the discharge amount of the powdery material measured by the measuring instrument is not conducted, a current applied to a coil of the motor to have a substantially constant amount, to control the discharge amount of the powdery material delivered to be discharged by the transfer member to have a required amount.