Laser Scoring Feedback Control for Residual Thickness Accuracy

The patent replaces the mechanical knife-based scoring system with a laser-based scoring system. The laser scoring device uses optical energy instead of mechanical contact to create scoring grooves, eliminating the limitations of knife-based methods such as inconsistent processing depth and inability to precisely control residual thickness. The laser system incorporates sensors and controllers that automatically adjust parameters to maintain consistent scoring depth and residual thickness, thereby improving manufacturing precision while reducing quality control costs.

The patent implements a feedback control system that uses sensors to measure the residual thickness of the workpiece in real-time during the laser scoring process. The measured residual thickness information is fed back to the controller, which automatically adjusts the laser power and scanning parameters to maintain the desired residual thickness. This closed-loop feedback mechanism enables precise measurement and control of residual thickness, eliminating the measurement capability deficiency of traditional knife-based scoring while maintaining equipment simplicity through integrated sensor systems.

The patent implements real-time feedback control during laser scoring by incorporating sensors that continuously monitor the scoring process parameters such as groove depth and residual thickness. The sensor data is immediately processed by a controller that adjusts laser power, scanning speed, and other parameters to maintain consistent quality. This real-time feedback mechanism enables the system to achieve both high processing speed and high manufacturing precision, as the automatic adjustments prevent defects rather than requiring post-processing inspection and correction, thereby reducing quality control costs.

The patent replaces traditional mechanical measurement and monitoring methods with optical sensing and laser-based measurement systems. The system incorporates sensors such as capacitive sensors, optical sensors, or interferometric measurement devices that can non-contactively measure groove depth, residual thickness, and other critical dimensions with high precision. These electronic/optical monitoring systems provide real-time data with superior accuracy compared to mechanical measurement tools, enabling precise process control while maintaining relatively simple system integration through modern sensor technology.