| 摘要 |
PROBLEM TO BE SOLVED: To provide an undercut processing mechanism capable of dealing with requirement of space saving by being configured compactly, realizing cost reduction, in particular, and dealing with a molded article of a complicated form having multiple undercut parts radially positioned in the whole circumferential direction of the molded article. SOLUTION: Three or more slide members 70 are housed in a holder 40 in a radial shape that the slide members 70 are opposed to a holder center axis. Each slide member 70 is slidably housed in the holder to be slidablr between a molding position, where the respective ends are made in contact with each other inside the holder 40, and a position, where the respective ends separate are made away from each other outside the holder. A tilted groove 44 is provided in the holder, serving as guides guiding the respective slide members 70 toward the mold releasing position from the molding position when mold cutting a molded article P, in the mold cutting direction parallel to a holder central axis and in the escaping direction from an undercut part P1 which is the radial direction of the holder central axis, along the tilted direction moving simultaneously respectively. COPYRIGHT: (C)2009,JPO&INPIT
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