LOCKING DEVICE FOR PILLARS OF A PLASTICS PROCESSING MACHINE

摘要

Locking device for locking a guide pillar of a plastics processing machine comprising a platen of the plastics processing machine; in the case of the locking device according to the invention, a first and a second locking jaw are mounted pivotably in opposite directions about at least one pivot axis, arranged in the closing direction of the plastics processing machine, in the manner of tongs towards each other into a closed position or away from each other into an open position. The locking jaws have on the inner sides thereof that are facing each other projecting locking elements that are formed in such a way that they can engage in counter-locking elements of a complementary form when the locking device is in the closed position. A radial overlap of the locking elements of the locking jaws with the counter-locking elements of the guide pillars is made to be smaller in regions near the at least one pivot axis than in regions far away from the at least one pivot axis. The pivoting of the locking jaws from the open position into the closed position and back takes place by force being introduced at a point of force application on the first locking jaw. The second locking jaw is connected to the first locking jaw in such a way that it can be taken along in the opposite direction by means of a toothed gear mechanism, which couples the second locking jaw to the first locking jaw.