| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that, in the case a powder lubricant is charged and is stuck to a pestle or the like, the powder lubricant is stuck to an electrode for forming an electric field, and by the covering of the electrode with the powder lubricant, the charging efficiency of the powder lubricant is reduced, thus the sticking efficiency is lowered. SOLUTION: In a compression molding machining where powder packed into a mortar is compressed with a pestle, so as to produce a compressed molding, the nozzle structure jets a lubricant at least toward the tip of the pestle prior to the packing of the powder. The nozzle mechanism is provided with: a guide passage guiding the lubricant; a jetting part jetting the lubricant guided by the guide passage at least toward the tip of the pestle; an electric field generating means having electrodes and charging the lubricant jetted in the vicinity of the jetting part; and a lubricant checking means forming an air current at either prescribed space in the part between the space for charging the lubricant and the electrode, and the circumference of the electrode. COPYRIGHT: (C)2008,JPO&INPIT
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