| 摘要 |
PURPOSE:To reduce the manufacturing cost of a mold for a rotary body with inclined blades by providing inclined slots through which a through pin is inserted on the side of the cylindrical mold in a divided blade forming mold part. CONSTITUTION:The blade forming mold part 4 is divided into a plural number of cylindrical molds 4b-4d, simultaneously on the side of each of the divided cylindrical molds 4b-4d, the inclined slots 4e-4g are provided which are inclined at the same angle as the inclined angle of the blades on the rotary body against the axial direction, and the pin 12 that is inserted through the inclined slots 4e-4g is provided in an extruding boss 4 and a stripper ring 5. Consequently, the mold releasability is high even in the inclined blade part of the mold for the rotary body with the inclined blades, the internal quality and dimensional accuracy are improved, and the manufacturing cost is greatly reduced. |
