High-speed surface inspection of rubber stoppers and plunger seals
Rubber stoppers and plunger seals travel in single file on a glass rotary table. Top, bottom and side images are inspected for surface, edge and size; a product with flash is rejected by an air jet.
Surface and contour results are matched to the table position and sent to the PLC; the stopper with flash is sent to the reject bin by an air jet and its image is displayed.
- 01 Index
- 02 Multi-view capture
- 03 Contour and surface
- 04 Reject
The glass table brings the product to the camera station.
- Outer diameter
- —
- Flash extent
- —
Scenes are illustrative simulations; they are not customer references or performance guarantees.
Need
Small foreign particles have low contrast on dark rubber. The carrier can hide the bottom surface, while thin flash becomes clear only in a silhouette taken from the right direction.
Solution approach
The glass table gives the bottom camera an unobstructed view. Diffuse light reveals surface regions to the top and bottom cameras; the side camera captures an edge silhouette against a backlight. Contour deviations, surface spots and dimensions are compared by rules.
Process steps
- 01
Index
The glass table brings the product to the camera station.
- 02
Multi-view capture
Top, bottom and side surfaces are imaged.
- 03
Contour and surface
Flash and surface spots are searched for.
- 04
Reject
The stopper with flash is rejected by an air jet.
Related applications
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