Method for the individual tracking of metallic hollow bodies

G - Physics – 06 – K

Patent

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G06K 1/12 (2006.01) G06K 19/06 (2006.01)

Patent

CA 2728832

The invention relates to a method for the individual tracking of metallic hollow bodies, in particular hot-fabricated steel tubes, wherein following a final step of hot-work the individual tube is provided with a distinctive identification on the tube circumference, which is read in the feed region to the subsequent manufacturing or test stations automatically as a video image during transport and independently from the direction of transport. According to the invention, the labeling of the tube circumference is carried out in at least two segment-like sections, the tube circumference being divided, wherein the labeling is carried out in segments with a rotation of less than 360 DEG of the numbering unit and the segments comprise an axial offset relative to the longitudinal axis of the tube, which is greater than the width of the data matrix code.

L'invention concerne un procédé permettant un suivi de corps creux métalliques en tant que pièces individuelles, en particulier de tubes d'acier finis à chaud, procédé selon lequel le tube individuel est muni, après un dernier processus thermique, d'une identification non interchangeable, disposée sur la périphérie du tube, et qui est lue automatiquement, en tant qu'image vidéo, dans la région d'entrée, en direction des postes de finition ou de contrôle suivants, pendant la continuation du transport, et indépendamment de la direction du transport. L'invention est caractérisée en ce que le marquage de la périphérie du tube s'effectue sur au moins deux parties segmentées partageant la périphérie du tube, en ce que le marquage est effectué par segment, avec rotation de l'unité de marquage de moins de 360°, et en ce que les segments présentent, par rapport à l'axe longitudinal du tube, un décalage axial qui est supérieur à la largeur du code matriciel de données.

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