Laser Web Processing Calibration Without Stopping Production

The patent implements continuous in-line calibration by integrating the calibration process into the normal production flow. The calibration target moves with the material web through the laser processing machine, allowing calibration marks to be created and measured without stopping production. The camera system continuously captures mark positions, and the control system continuously updates calibration data, maintaining uninterrupted material processing throughout the calibration procedure.

The patent introduces a calibration target as an intermediary element that carries calibration marks through the laser processing machine. This target serves as a mediator between the laser processing system and the camera measurement system, enabling precise calibration measurements to be taken in-line without interfering with normal production. The target can be integrated with the material web or processed separately while maintaining continuous material flow.

The patent merges the calibration function with the existing laser processing machine and camera inspection system. Instead of using separate offline measurement equipment, the calibration process utilizes the same laser source, motion control system, and camera system already present in the production line. This integration eliminates the need for additional standalone calibration devices and reduces overall system complexity while maintaining calibration precision.

The patent makes the existing camera system and laser processing system multi-functional by enabling them to perform both production processing and calibration functions. The camera system simultaneously monitors material quality during production and captures calibration mark positions for calibration. The laser system processes material during normal operation and creates calibration marks when needed, eliminating the need for dedicated calibration equipment.

The patent implements self-service calibration where the system automatically performs all calibration operations without operator intervention. The control system automatically positions the calibration target, triggers laser marking of calibration patterns, coordinates camera capture of mark positions, processes the image data, and updates calibration parameters. The system autonomously manages the entire calibration workflow, eliminating the need for operators to manually assist with target positioning, data collection, or calibration computation.

The patent establishes a closed-loop feedback system where the camera continuously measures actual mark positions, the control system compares these measurements with nominal positions, and automatically computes correction factors. This real-time feedback mechanism enables the system to self-correct calibration deviations immediately, eliminating the need for manual measurement and calculation steps that would require operator time and effort.

The patent uses real-time feedback from the camera system to measure the actual positions of calibration marks created during in-line processing. The control system continuously compares these measured positions with the nominal positions based on motion commands, and automatically computes correction factors to compensate for any synchronization errors. This closed-loop feedback ensures that motion synchronization challenges are continuously corrected, maintaining manufacturing precision despite the dynamic in-line calibration process.

The patent replaces mechanical synchronization methods with optical measurement and computational correction. Instead of relying solely on mechanical precision of motion systems to maintain synchronization, the system uses optical cameras to measure actual mark positions and computational algorithms to calculate correction factors. This substitution of mechanical precision with optical-measurement-and-computation precision enables accurate calibration even when motion synchronization has minor variations.