| 摘要 |
PURPOSE:To surely strike down a casting article at high speed time by preventing the flaw and deformation of the casting article fixed to a mobile die, by actuating at high speed from the optional position of a stroke by actuating the advancing speed a low speed at the extrusion advancing time of an ejection pin. CONSTITUTION:The advancing speed of an ejection pin 3 is actuated at low speed at the ejection advancing stage of the ejection pin 3 taken out by ejecting the casting article 2 fixed to a mobile die 1 by separating the mobile die from a stationary die. The speed is then transferred to high speed from the optional position of the stroke of the ejection pin 3. Also, after actuating the advancing speed of the ejection pin 3 at low speed, it is transferred to high speed from the optional position of the stroke of the ejection pin 3 and after completion of the ejection stroke, retreated at high speed upto the optional position of the stroke and advanced with ejection at high speed again. The energy of striking down impactly is then given to the casting article 2. |
