| 摘要 |
Rod imaging apparatus comprising a contact image sensor 6 that images the rod 2 as they rotate. The rod support may be a plurality of rollers 4 which may double as the rotation means. The rod axis is parallel to the image sensor and the separation distance is adjustable 24. A processor 12 identifies optically recognisable features in the rod to determine when rotation occurs. The outer circumferential surface of the rod/cylinder, or the inner surface of a tube, is imaged. A light source 8 illuminates the rod for front 8c, side 8b or back lighting 8a in infrared or ultra-violet wavelengths. The sensor captures multiple axial portions of the rotating rod, forming a stitched composite image. The rod may pass or fail the inspection based the detected features. The system is designed for the quality control of cigarettes, cigars and cigarillos to detect defects, along the entire length of the rod, such as wrapping paper spots, stains, creases and tears and the presence or absence of printed text. |
