Rotary Die Scoring Stress Wave Signal Acquisition
Real-time acoustic stress wave monitoring on rotary die scoring lines detects paperboard matrix micro-cracking instantaneously, reducing convert scrap by up to 80 percent.
Rule Wear Tracking
Die Degradation
Flatbed and rotary die-cutters use steel blades to cut and crease paperboard sheets in a high-speed production line. Through rule wear tracking, a converting plant monitors the physical height and sharpness of these tools to predict when they will begin to fail. This continuous observation prevents common defects like ragged edges and inconsistent crease depths.
It allows the plant to schedule blade changes during planned maintenance windows instead of stopping the line during a run.
Measurement Methods
Inspecting die-cutting tools by hand can be slow and presents safety risks for the operator. Modern rule wear tracking uses optical cameras or laser scanners to measure the blade profile directly inside the press. These sensors record changes in blade height as small as ten micrometers.
Production Impact
Worn blades require higher pressure from the press to achieve a clean cut through the paperboard. This extra force accelerates the wear on the counter-die plate and can crush the flute structure of corrugated boards. By implementing rule wear tracking, a company can balance the pressure across the entire die to extend tool life.
The resulting reduction in mechanical stress ensures that the folding cartons assemble smoothly on the automatic filling lines.