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Laser marking method

A laser marking method and laser technology, applied in the field of laser marking, can solve problems such as workpieces becoming defective products

Inactive Publication Date: 2020-06-09
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the defects existing in the prior art, the technical problem to be solved by the present invention is to provide a laser marking method, which aims to solve the problem of deviation in the position of the printed image caused by the deviation in the placement position of the workpiece during the laser marking process. , so that the processed workpiece becomes a problem of defective products, improving product yield

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0023] Such as Figure 1-3 As shown, in the first embodiment of the present invention, a kind of laser marking method is provided, and described method comprises the following steps:

[0024] Step S1, in response to the infrared scanning device scanning and identifying the workpiece to be marked in the processing area, collecting the outline and alignment marks of the workpiece to be marked through the image acquisition module and forming a first image; the alignment marks include: The first alignment mark, the second alignment mark, the third alignment mark and the fourth alignment mark correspond to the coordinates of the first alignment mark, the coordinates of the second alignment mark, the coordinates of the third alignment mark and the fourth Alignment mark coordinates, and the alignment marks are symmetrically distributed on the four corners of the wo...

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Abstract

The invention discloses a laser marking method. The method comprises the following steps that in response to scanning and identifying of a to-be-marked workpiece in a processing region by an infraredscanning device, contour and alignment marks of the to-be-marked workpiece are acquired through an image acquisition module to form a first image; according to the first image acquired by the image acquisition module, real-time actual coordinates and workpiece intrinsic coordinate values are acquired; according to the real-time actual coordinates, a center coordinate is solved, and a rotation angle is solved; according to the rotation angle, a to-be-projected marking pattern is rotated, and the rotated marking pattern is projected to the real-time projection coordinates by controlling a projection module according to the center coordinate and the workpiece intrinsic coordinate values; and according to the marking pattern projected to the real-time projection coordinates, a marking track ofa laser device is controlled to coincide with the marking pattern, and laser marking of the to-be-marked workpiece is completed. In the method, by solving the rotation angle, the to-be-projected marking pattern is rotated, the deviation between the position of the marked pattern and a preset position is effectively avoided, and the product yield is improved.

Description

technical field [0001] The invention relates to the technical field of laser marking, in particular to a laser marking method. Background technique [0002] Laser marking technology is one of the largest application fields of laser processing; laser marking is a chemical reaction in which a high-energy-density laser is used to locally irradiate the workpiece to vaporize the surface material or undergo a color change, thereby leaving a permanent mark. A marking method; laser marking can print a variety of text, symbols and images. [0003] In the prior art, when laser marking a workpiece, operators or mechanical transmission equipment are required to send the workpiece to be marked into the processing area, often due to deviations in the placement position, resulting in various characters and symbols printed out And images cannot be located in the ideal position on the workpiece to be marked, making the processed workpiece a defective product. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B23K26/362B23K26/70
CPCB23K26/362B23K26/702
Inventor 林心
Owner 林心
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