Contour and tolerance inspection
… using the example of a cat pill test.
Tiny cat pills are contained within batteries, where they enhance safety. To ensure smooth functionality, these pellets must be inspected for irregularities and sorted before use.
WEBER's engineers developed a specialized test system for this purpose, in which the pellets are singulated and transported past measuring stations on a conveyor belt. As they travel toward the sorting station, they are scanned and inspected. At the end of the line, so-called "reject parts" are removed from the conveyor belt using blow-off valves, while "good parts" are collected.
The system components used
Based on the recorded contour, the checkbox detects chips and deformations. It controls the blow-off valves and, depending on the contour inspection result, determines whether the pellet is blown off or remains on the conveyor belt.
Hardware Camera System "Tolerance Inspection"
Pellets whose contour shows no irregularities are then measured by an intelligent camera. The length and width of the pellets can be captured to an accuracy of ±0.1 mm. The camera reports to the checkbox whether the pellet falls within the width and length tolerance. If the measurement result is negative, the checkbox activates a blow-off valve — good parts remain on the belt, while reject parts are sorted out.
Technical Description
- Programming/configuration – tailored specifically to the test system
- Communication parameterization – via the digital I/O interface and Ethernet interface
- Commissioning and start-up support – provided directly on-site at the customer