Apparatus and method of adaptive laser cutting control based on optical inspection
AssigneeAvery Dennison Retail Information Services LLC
InventorIan J. Forster
Life of this patent
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Abstract
An apparatus and method of improving the stability and repeatability of the laser cutting of an RFID antenna is disclosed. The present invention provides direct feedback from an optical inspection of the cutting process to the control system to determine the shape of the RFID antennas that are being cut and compare the same to the desired RFID antenna shape or pattern. When appropriate, the present invention enables a user to employ both short term and long term feedback data to make modifications to the laser cutting process to improve the same and reduce waste.
Claims13
A method of adaptive laser cutting control for correction of a cutting pattern comprising:
- operating a laser cutting system comprising a control system and a laser to cut an RFID antenna pattern in a web, wherein the control system comprises a short term control systems and a long term control system;
- utilizing an optical inspection system to compare the RFID antenna pattern produced on the web to a predetermined RFID antenna pattern and generate feedback data;
- and
- providing the feedback data to the laser cutting system to achieve the predetermined RFID antenna pattern by correction of the RFID antenna pattern, wherein the feedback data is utilized by an adaptive algorithm of the control system, and
- wherein the predetermined RFID antenna pattern is obtained based on the feedback data and at least one of a short term data from the short term control system and a long term data from the long term control system.
A laser cutting system comprising:
- a control system comprising a short term control system and a long term control system;
- a laser for cutting an RFID antenna pattern in a web;
- and
- an optical inspection system configured to inspect the RFID antenna pattern and provide a feedback data to the control system by comparing the RFID antenna pattern in the web with a desired RFID antenna pattern, wherein the control system is configured with an adaptive algorithm that uses the feedback data to correct the RFID antenna pattern cut in the web, and wherein a short term data of the short term control system and a long term data of the long term control system are combined to optimize the laser and ensure that the desired pattern is achieved by the laser cutting system.
A laser cutting system comprising:
- a laser for cutting an RFID antenna pattern in a web;
- and
- a control system comprised of an inspection data system, a data gathering system, a short term control system and a long term control system, wherein output data from the inspection data system, the data gathering system, the short term control system and the long term control system are used to correct the RFID antenna pattern cut in the web.
Dependencies are inferred from the claim text.