| 摘要 |
Method and device for rotary marking or machining of cylindrical materials, preferably natural cork stoppers, agglomerated cork or synthetic materials used to close drinks like wine or similar, suitable to perform the method described in the claims, that includes at least one feeder system of cylindrical elements, preferably natural and synthetic cork stoppers; means of sensing the presence of such cylindrical elements, a laser system, means to produce the rotation of the cylindrical elements on its axis of revolution, at a variable speed, in a tangential movement compared to the focal plane of the laser system, means of measuring the instantaneous velocity tangential to its surface and direction of rotation, optical correction and focusing means, microprocessor control based means, means for extracting the cylindrical elements, and is characterized by the fact that the laser system comprises means of generating at least one laser beam; means of temporal modulation and switching for the laser beam, and means of spatial modulation of each of these laser beams in a synchronized manner with the instant tangential speed on the surface of the cylindrical element. |
