| 摘要 |
The plasticizing cylinder is adapted to be locked by a locking apparatus which comprises diametrically opposite sliders, which are guided on the carrying block of the injecting unit, which carrying block carries the plasticizing cylinder. The sliders are movable to a locking position, in which they are received by recesses of the plasticizing cylinder. The sliders are interconnected by hydraulic piston-cylinder units having cylinders proper, which are integrated in one of the sliders, and piston rods, which are connected to the other slider. The sliders are hydraulically movable out of their locking position and can be moved under spring force to their locking position. Alternatively, the sliders may be fully hydraulically operated.Such a locking apparatus can be manufactured in series at low cost. The locking apparatus constitutes an operative unit, which is detachably mounted on the carrying block and can be replaced with a few manual operations.
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