Transport device for objects in packaging machines

A conveyor apparatus (10) for items (1) in packaging machines, in particular for folding boxes in boxing machines, with parallel conveyor chains (11 to 14) equipped with pusher lugs (18, 19), wherein an item (1) is contained with positive engagement between leading and trailing pusher lugs (18, 19) of the conveyor chains (11 to 14), and wherein the position of the conveyor chains (11 to 14) and consequently of the pusher lugs (18, 19) in relation to one another can be adjusted to adapt the format by means of a self-locking mechanism (35), characterized in that the conveyor chains (11 to 14) connected to the leading pusher lugs (18) and those connected to the trailing pusher lugs (19) are respectively coupled to a cross sectionally polygonal adjusting shaft (41, 44) disposed in a stationary fashion in the housing frame (51), wherein the adjusting shafts (41, 44) each support one adjusting element (42, 45) that is stationary and one that is disposed in a positively engaging fashion and can be moved on the adjusting shaft (41, 44), which adjusting elements (42, 45) cooperate with the conveyor chains (11 to 14), that the one adjusting shaft (41) supports the self-locking mechanism (35) and is coupled to it, and that the other adjusting shaft (44) is connected to the self-locking mechanism (35) by means of a transmission mechanism (47, 48, 49).