Powdery material mixing degree measurement device, powdery material mixing and feeding system, and compression-molding machine including the same

A powdery material mixing degree measurement device configured to measure a mixing degree of mixed powdery materials including at least two types of powdery materials, the device comprising:

• a discharger configured to discharge the mixed powdery materials to a filler configured to fill, with the powdery materials, a die bore of a compression-molding machine configured to cause punches to compress the mixed powdery materials in the die bore to mold a molded product;
• a plurality of movable portions configured to move the mixed powdery materials to the discharger;
• a feeding unit configured to feed the movable portions with the mixed powdery materials;
• and
• a sensor configured to measure a mixing degree of the mixed powdery materials in the feeding unit.

A method of producing a compression molded product with a compression-molding machine from mixed powdery materials including at least two types of powdery materials, the method comprising:

• simultaneously measuring and feeding the powdery materials;
• firstly mixing the at least two types of powdery materials measured and fed in the measuring and feeding with a first mixing member configured to rotate about a substantially vertical shaft;
• secondly mixing the powdery materials subjected to the first mixing with a second mixing member configured to rotate about a substantially horizontal shaft;
• measuring a mixing degree of the powdery materials with a sensor after the second mixing;
• filling, after the measuring, with the mixed powdery materials, a die bore of the compression-molding machine including an upper punch, a lower punch, and the die bore;
• and
• compression molding the mixed powdery materials filled in the die bore, with the upper punch and the lower punch after the filling.