US Patent 7678038 Device for compressing a folded edge

A compression or fold completion device used to uniformly compress a folded edge of a workpiece, such as a box blank, in order to allow the blank to more easily be utilized in subsequent packaging operations. The device includes a pressure roller mounted to a rotatable adjustment member. The rotational axis of the pressure roller is offset from the rotational axis of the adjustment member. The adjustment member is in turn connected to an actuating assembly, which may include an arm secured at one end to the adjustment member and at the other end to an extendible and retractable actuator, in order to enable the actuator to rotate the adjustment member and selectively position the pressure roller in engagement with a folded edge of a workpiece passing beneath the pressure roller.