Machine vision-based on-line high-speed inspection method for receiving hub filter rod core line of filter rod forming machine

Aiming at the problem of large degree of core wire offset from the axis of the filter rod in the production process of hard ruffled filter rods, this paper designs an on-line high-speed inspection method based on machine vision for the forming unit of cigarette filter rods, which uses ellipse fitting to identify the filter rods and core wires, and outputs the centre coordinates of the two and determines whether they are qualified or not. The detection speed of the system is fast, high precision, the estimated detection capacity is better than 4200 pcs/min, the detection rate of defective products with core wire offset centre of more than 0.5mm and missing core wire is 99%, which is able to achieve the detection requirements of detecting defective products with core wire filter rods to meet the production needs and guarantee the quality of the filter rods on-line.