| 摘要 |
PROBLEM TO BE SOLVED: To attain continuous driving for long term by exhausting a lubricant flowing in an anvil from a die, from the surrounding of a knock-out pin, in the knock-out device for forging. SOLUTION: In the knock-out device (1), the knock-out pin (20) has a larger diameter flange part (22) at the intermediate part in the longitudinal direction of shaft parts (21)(24), and an anvil (10) is composed of an upper anvil (11) boring upper through-holes (31)(41) corresponding to the knock-out pin (20) and the flange part (22), a space (52)for inserting corresponding to the shaft part (24) of the knock-out pin (20), and a lower anvil(50) boring a lower through-hole (51) having a space (53) for exhausting the lubricator surrounding this space (52) for inserting. An upper passage (32) for exhausting the lubricator hold-opening in the upper through-hole (31) is arranged at higher position than the flange part (22) at the top dead center position of the knock-out pin (20), and a lower passage (43) for exhausting the lubricator communicated with the upper passage (32) hole-opened in the upper through-hole (4), is arranged at the position where does not exceed the lower surface of the flange part (22)at the top dead center position. COPYRIGHT: (C)2008,JPO&INPIT
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