| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum die-casting machine assuring the sealability of a clearance between a pin hole and an ejection pin in order to make a contribution to quality improvement of a die-casting article. SOLUTION: A pin hole 10 of the vacuum die-casting machine 1 includes an enlarged diameter hole part 10b formed at one end of a moving die 2b communicatively connected with a cavity 9, a reduced diameter part 10a, and a tapered hole part 10c. In addition, the ejection pin 7 includes: an enlarged-diameter shaft part 7c formed at one end existing on the cavity 9 side; a reduced diameter shaft part 7d formed at the other end; and a tapered shaft part 7e for connecting the reduced diameter shaft part 7d and the enlarged-diameter shaft part 7c. COPYRIGHT: (C)2009,JPO&INPIT
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