| 摘要 |
PURPOSE:To increase the compressive transfer efficiency and filling efficiency of raw material particles by feeding pressurized air into the inside of a molding cavity around a filling opening of the cavity, transferring at once raw material particles brought to the filling opening into the cavity by means of pressurizing air and keeping filling, and then blowing back the surplus raw material particles remaining around the filling opening by means of pressurized air. CONSTITUTION:An introduction opening 93 of pressurized air is formed around an end opening, or a cavity opening 24, of a filling machine 9. A feeding valve 94 to control feeding of pressurized air is installed at said introduction opening 93. The introduction opening 93 is opened to be able to fill the pressurized air to the inside of a molding cavity 23 by the opening action of a pressurized air feeding valve 94. The pressurized air out of said introduction opening 93, therefore, is provided with a function to compressively transfer the raw material particles transfer compressively in one motion to the end opening section of the filling machine 9 into the molding cavity 23 through a cavity opening section 24. After the completion of filling, surplus raw material particles residing or remaining around the molding cavity opening section 24 are blown back to the side of a pressure silo 8 in cooperation with the pressure reducing suction force on the side of the pressure silo 8.
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