DEVICE FOR LOCKING A SUCTION NOZZLE OF A SEPARATING SUCKER AT A SUCTION HEAD OF A SHEET FEEDER

摘要

The device for locking a suction nozzle of aseparating sucker at a suction head of a sheet feeder of asheet-processing machine relates to a suction head havingvertical motion effected by means of suction air andresilience of a spring. The suction nozzle comprises alaterally arranged bearing support which, with said suctionnozzle being in the lifted position, is held by a movablyarranged abutment or counter-bearing until the trailingedge of a sheet supplied to the feeder has left the area ofsaid suction nozzle of said separating sucker. The suctionhead comprises at least one forwarding sucker which, bymeans of a drive, is guided at said suction head so as tobe movable forwards and backwards with the working cycle ofthe machine and approximately parallel to a sheet plane.The abutment is connected to move forwards and backwards bythe forwarding-sucker drive and during a selected portionof this movement unlocks said suction head momentarilybefore returning it to a locked position.