SPACING DEVICE FOR OBJECTS CONVEYED THROUGH AN OPERATING MACHINE, IN PARTICULAR FOR CARD-BOARD BOX CLOSING AND/OR SEALING MACHINES

摘要

The device comprises at least one lever pivoted on a spreading section of an entrainment unit. Said lever is elastically stressed in a position such that a first portion thereof is normally moved toward the interior of the machine and inserted in the path of travel of the objects while a second portion thereof bearing a passive stopping means and located upstream from the first is normally moved toward the exterior of the machine and outside the path of travel of the objects. When a first object meets said first portion of the lever moving it outwardly, the second portion of said lever is moved inwardly in such a manner that said stopping means can prevent advance of a second object until the first object reaches a desired distance.