Closure orientation check (bottles, shampoo, detergent)
On pump, trigger or flip-top closures the direction of the spout is measured in a top-view image as an angle relative to the axis of the bottle body. A closure turned beyond tolerance is flagged and a diverter flap moves the bottle to the reject conveyor.
Body axis and closure angle are written to the line PLC for every bottle; a bottle outside tolerance is diverted to the reject conveyor by the flap. The angle distribution is shown on the operator display and feeds back to the capper setting.
- 01 Infeed
- 02 Acquire
- 03 Angle
- 04 Decide
Pump bottles arrive with the label face to the front.
- Body axis
- —
- Closure angle
- —
Scenes are illustrative simulations; they are not customer references or performance guarantees.
Need
Closure orientation only makes sense relative to the body axis, and the bottle itself arrives rotated a few degrees on the belt. The oval body and the pump head share similar light tones, the curved shoulder reflects, and spout height varies with bottle type.
Solution approach
A ring-lit smart camera looks straight down: the oval body outline is fitted with an ellipse whose long axis becomes the body axis, and the pump spout is found as a separate pattern. The angle between the two directions is measured and compared with the ±12° tolerance sector, so the bottle's own rotation does not affect the result.
Process steps
- 01
Infeed
Pump bottles arrive with the label face to the front.
- 02
Acquire
The photo-sensor triggers and the ring-lit camera images the closure from above.
- 03
Angle
An ellipse is fitted to the body outline; the spout direction is measured against the body axis.
- 04
Decide
The measured angle is compared with the ±12° tolerance sector.
Related applications
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