| 摘要 |
A shaft supporting mechanism for a mixing and kneading device including a shaft which is driven by a motor, a mixing and kneading blade having an insertion hole which is to be inserted into the shaft. The shaft has a D cut surface formed thereon, and at the end of the D cut surface, a sloped corner facet consisting of edge portions each having an inclination is formed. On the other hand, the mixing and kneading blade has a plane abutment surface formed as a portion of the inner wall of the insertion hole. The mixing and kneading blade is inserted into the shaft in such a manner that the abutment surface is meshed with the D cut surface, to rotate the mixing and kneading blade while the shaft is rotated by the motor.
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