System and method for visual inspection of cigarette packaging process

摘要

The present invention provides a system and method for detecting non-conforming cigarette packages during the actual fabrication process. A digital camera is placed in close proximity to the blank feeding and folding turret area of a cigarette packaging machine assembly. Prior to the cigarette package being completely formed, the camera captures a digital image of three sections of the pack blank, namely the dust flaps and the inside front face. The camera is used to visually inspect the pack blank for mis-folded or partially or completely missing dust flaps and a reversed pack blank. The captured image is transferred to a processor which compares the pixel value of the three sections of the pack blank to a predetermined pixel value. If the comparison indicates that the pixel value of any of the three sections does not equal the predetermined pixel value which means that one or more of the dust flaps are either mis-folded or partially/completely missing or that the blank is reversed, the cigarette package is registered as non-conforming. Visually inspecting the blank prior to the cigarette package being completely formed allows for the cigarettes within the non-conforming package to be easily recycled and aids in diagnosing problems in the actual cigarette packaging process.