SYSTEM OF LASER MARKING OF TRANSPARENT AND SEMITRANSPARENT MAINLY THIN-WALLED CURVILINEAR ARTICLES IN CONVEYOR PRODUCTION Russian patent published in 2005 - IPC

FIELD: food and light industry.

SUBSTANCE: invention relates to processing of articles and forming of picture inside transparent or semitransparent materials. System includes optical unit to form laser punctures in article material combination of which composes number of symbols of marking picture, unit to feed article to zone of marking and process control unit. Optical unit contains pulse laser set with at least one optical channel connected with unit of article scanning and/or positioning relative to focusing lens of laser set. Process control unit is furnished with device for time synchronization of beginning of marking with position of zone of article marking. Laser pulse frequency index, capacity of conveyor and number of channels are related by mathematical dependence. Invention makes it possible to form pictures by marks inside thin-walled articles with curvilinear surface under conditions of high-speed conveyor production.

EFFECT: improved reliability of marking non-reproducible under other conditions.

5 cl, 1 ex, 1 dwg