Source: GREIF-VELOX
VeloDrum SafeClosure is a patent-pending solution that fully automates a previously manual step in drum filling: opening and closing fine-thread bung caps before and after filling. Until now, fine-thread bung caps in drum filling have largely been opened by hand and closed again after filling—a time-consuming step that is difficult to standardize. VeloDrum SafeClosure turns this step into a fully automated, monitored sequence. Positioning, tool engagement, and screwdriving take place without manual intervention, resulting in repeatable processes and greater process reliability. The monitored process comprises six steps. First, a vision-based system determines the position of the bung opening. A centering ring then moves onto the opening before a positive-pressure test confirms correct seating and sealing. The tool subsequently engages with the cap and opens it under torque control. After filling, the system repositions the cap and tightens it automatically. Finally, monitored torque and screw-in depth parameters confirm correct closure. If the system detects incorrect engagement, integrated reject technology places the plug next to the bung opening. A special feature of the system is its controlled handling of plastic caps, whose material properties place particular demands on reliable automated screwdriving. A springless pneumatic system holds the cap securely in the cap holder and reduces the risk of snagging as the tool retracts. The system can be integrated into automated line concepts, is designed as a retrofit for existing systems, and can also be used in hazardous areas. Typical applications include the chemical and food industries, contract filling, and drum manufacturing. — GREIF-VELOX Maschinenfabrik GmbH, Lübeck, Germany