| 摘要 |
<p>The invention relates to a guide column with a double ejection mechanism of ejector plates for injection moulds, which allows sequentially moving two sets of plates, which comprises:
- a shaft (1) with a first end intended to be fixed in a fixed base plate (M) of the mould and a second end intended to be fixed in a dolly plate (N) of the mould; said shaft (1) comprising a first end segment (11), an intermediate segment and a second end segment (12),
- an assembled guide bushing which can move longitudinally on the first segment of the shaft, and in solidarity with the first set of ejector plates,
- a driving guide bushing in solidarity with a second set of ejector plates fixed to a driving ejector bar, which can move on an end of the guide bushing, and
- locking means, establishing the locking of the driving guide bushing with respect to the guide bushing during the movement of said guide bushing on the first segment of the shaft; and the locking of the guide bushing and the release of the driving guide bushing when said locking means reach the intermediate segment of the shaft, defining the limit position of the path of said guide bushing.</p> |
