ELECTRIC DIE-CASTING MACHINE

摘要

An electric injection device 1 of a die-casting machine is provided with: a rotatably held screw shaft 5; a nut 7 that is screwed onto the screw shaft 5 and that is driven forward and backward in accordance with the rotational drive of the screw shaft 5; an injection plunger 9 that is driven forward and backward in conjunction with the forward and backward movement of the nut 7; an injection electric servomotor 11 and a pressure-increasing electric servomotor 12 that rotationally drive the screw shaft 5; a one-way clutch 13 that is provided between the screw shaft 5 and the pressure-increasing electric servomotor 12; and a lubrication device 14 that rotates integrally with an outer ring 92 of the one-way clutch 13. The present invention lubricates the one-way clutch 13.