Non-contact robot laser marking system and marking method

Abstract

The invention provides a non-contact robot laser marking system and a marking method. The laser marking system comprises a robot (1), a range finder (3) is arranged on a mechanical arm of the robot (1), and a laser (2) is arranged at the tail end of the mechanical arm. The marking method comprises the following steps that after an aluminum stack (4) is in place, focusing is started; a range finder (3) stops when reaching the position near the upper edge of a marking surface (5) of an aluminum ingot, and the distances l13 and l14 are measured; a robot (1) drives the range finder (3) to continue to vertically move downwards by a proper distance h and then pauses, and the distances l23 and l24 between the range finder (3) at the second height and the side face (5) of the aluminum ingot are measured; an average value d of four data is calculated, and the slope theta of a slope and the aluminum ingot placing deflection angle alpha are obtained; a focal length difference e is obtained by taking the focal length of a laser; and the data are sent to the robot, the robot (1) carries the laser (2) to adjust the position posture according to theta, alpha and e, accurate focusing is achieved, and marking work is completed. The beneficial effects are that focusing is accurate, and the marking success rate is effectively improved.

Description

Technical field [0001] The present invention relates to an aluminum ingot, a zinc ingot, and a magnesium ingot continuous casting production line processing technology, in particular to a non-contact robot laser marking system and a marking method of laser-laser-laser-laser-based lasers. [0002] technical background [0003] In an aluminum ingot continuous casting production line, the cast aluminum ingot is cooled into the formation and the palletizing, it is necessary to mark the production information on the uppermost aluminum ingot of the aluminum, but the laser scale requires accurate focus of the laser lens and the header surface, The side of the aluminum ingots need to be marked is a bevel, and due to the cast size error, the palletizing error, the aluminum ingot is often unregulated, and the slope position is uncertain, so the laser is difficult to accurately focus. Traditional contact marking method, often due to mechanical blocking, etc., causes the focus inaccurate, and...

AI Technical Summary

Problems solved by technology

[0003] In the aluminum ingot continuous casting production line, after the cast aluminum ingots are cooled and formed and stacked, the production information needs to be marked on the side of the aluminum ingot on the top layer of the aluminum stack. However, laser marking requires the laser lens to be precisely focused and parallel to the marking surface. However, the side of the aluminum ingot that needs to be marked is a bevel, and due to the casting size error, stacking error and other reasons, the aluminum ingot’s pose is often irregular, and the position of the bevel is uncertain, so it is difficult for the laser to focus accurately

The traditional contact marking method often leads to inaccurate focus due to mechanical blockage and other reasons, and the marking success rate is low

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