| 摘要 |
PROBLEM TO BE SOLVED: To improve metering by preventing the generation of powder and the heat generation of a resin. SOLUTION: A heating cylinder, a feed screw 18 for supplying a molding material to the heating cylinder, and a driving means for driving the screw 18 are provided. The feed screw 18 has a support and an auger 33 which is arranged freely rotatably in the support and conveys the molding material in the axial direction with the rotation. The diameter of the main body part of the auger 33 is decreased from the upstream side in the conveyance direction of the molding material toward the downstream side. In this way, when the auger 33 is rotated, the state of the resin conveyed in a channel 39 is changed from a dense state to a sparse state from the upstream side to the downstream side.
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