device to cut the seitenwaende a box to gaenzlichen or partial separation of the lid and the schachtelteils

摘要

A device for cutting the sidewalls of a box for separating wholly or partly the lid from the box proper, said device comprising a conveyor passing the boxes in sequence by their sidewalls along cutting members arranged at the side of said conveyor and detecting means for assessing a cut right across each treated sidewall, wherein the improvement comprises detecting means formed by at least one blade spring having a feeler edge which can be inserted into the cut and clamped tight near one end of the edge; a member engaging the blade spring at a distance from said edge and from the clamping area for bending the blade spring; and a control element responding to a predetermined bend of each edge putting the expelling member out of operation.