Dynamic Redraw Sleeve Control for Symmetrical Can Forming

The patent applies the dynamics principle by transforming the static, manual adjustment system into a dynamic, automated system. The redraw sleeve position and force are now controlled by actuators (hydraulic or electric) that can adjust parameters during machine operation without stopping production. The control system receives feedback from sensors and dynamically modifies the redraw sleeve settings to maintain optimal forming conditions throughout the production cycle.

The patent applies parameter changes by dynamically adjusting the redraw sleeve position and applied force during the forming process. By optimizing these parameters in real-time based on feedback from load cells and position sensors, the system achieves more uniform material distribution and reduced work hardening. This allows thinner gauge materials to be used while maintaining can strength requirements, as the controlled forming process prevents defects that would otherwise require thicker walls for compensation.

The patent implements feedback control by using load cells to measure the actual force applied by the redraw sleeve and position sensors to monitor sleeve location. This feedback information is fed to the control system, which dynamically adjusts actuator output to maintain optimal forming forces. This closed-loop control ensures precise forming without excessive force that would cause work hardening, as the system continuously adapts to actual material response during the forming process.