| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of locking of an ejector pin, to improve the durability of an ejector unit and to perform the attaching and detaching of the ejector unit to a press die by using a general-purpose socket wrench and an automatic clamping tool. SOLUTION: The generation of the locking due to uneven wear of the ejector pin is suppressed by making the cross-sectional shape of the ejector pin 12 and the shape of the guide hole 13 of the ejector pin 12 which is formed on the cylindrical main body 2 into a hexagon. Consequently, the durability of the ejector unit 11 is improved. By using the ejector pin 12 having a hexagonal cross section as a engaging part with the general-purpose socket wrench, the use of the automatic clamping tool such as an impact wrench is made possible and the attaching and detaching work of the ejector unit 11 to the press die is efficiently and surely performed. COPYRIGHT: (C)2005,JPO&NCIPI
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