Application guide by addaScanCompare the inspection task, imaging conditions and validation steps with your own production line.
- Inspection focus
- Straw position relative to its carton
- Primary theme
- Assembly verification
- Decision evidence
- Straw correctly located
- Trial priority
- Missing, bent and detached straws
The straw must belong to the carton attachment zone
The original English schematic explains the observable features and the proposed decision. The tables below set out the conditions to test on your own line.
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A straw inside the image is not necessarily attached to the carton. Evaluate its relationship to the located attachment zone and retain uncertainty when that region is hidden. Original schematic; adhesive strength is not measured.
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Inspect the attachment zone, not just the straw silhouette
Register the carton edges or artwork and express the straw position in carton coordinates. This prevents carton wander from looking like a misplaced straw. Backlighting can emphasise a protruding wrapper, while a reflected view may be needed to see the expected contact region. Transparent film, bent straws and loose wrappers need their own challenge samples; none should be represented by a single clean straw image.
Locate the carton before evaluating the straw. Use the approved attachment zone and the permitted straw-wrapper shape to distinguish an attached component from a loose straw passing beside it. Carton movement must not shift a fixed inspection window onto the next pack or onto a guide that resembles the wrapper.
Define what visual attachment evidence is required and where it can be observed after the applicator. A view of the straw body may confirm presence while leaving the attachment area hidden. Include bent wrappers and normal packaging reflections in the reference set, and separate a visibly wrong relationship from one that cannot be judged because glare obscures the joint.
Choose views that expose the assembly relationship
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| Approach | Useful when | Limit or integration responsibility |
|---|---|---|
| Presence sensor | Simple missing-straw detection with controlled presentation | May respond to a loose wrapper or a nearby unattached straw. |
| Registered camera inspection | Position, orientation and visible attachment relationship | Requires clear views and an agreed definition of acceptable contact geometry. |
A presence sensor is appropriate for a genuinely missing-straw requirement. Where attachment or position matters, compare carton-relative views with presentation changes that expose the region. Neither additional pixels nor a presence score establishes adhesive retention where the connection is unseen.
A visible detached straw still fails attachment
Illustrative scenario: a straw-shaped feature is detected, but it is separated from the carton attachment zone. Divert that carton and retain the registered image, rather than passing it on presence alone.
After reattachment, reacquire the complete zone and associate the new result with the reworked carton. If diversion is not confirmed, inhibit normal release according to the line-control design. Release follows a valid geometry result and confirmed handling.
After reattachment, inspect the carton again at the qualified trigger position. Keep the rework result separate from the original failure and confirm removal when the reject fails to actuate. A straw-applicator acknowledgement does not close an unresolved camera result.
Challenge carton wander and wrapper reflections
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| Challenge sample or event | Expected behaviour to establish | Evidence to retain |
|---|---|---|
| Missing, bent and detached straws | Distinguish absence from misplaced presence in the saved result. | Carton event, attachment-zone image, separate missing/bent/detached state and containment acknowledgement. |
| Carton wander and wrapper glare | Maintain a valid carton datum or return unknown. | Carton location, shifted attachment region, glare/occlusion map and result from a valid reacquisition. |
| Reattachment and reject failure | Prove reinspection and physical handling confirmation. | Original fault, reattachment step, new joint image, reject feedback and final rework disposition. |
Use detached straws within the camera field as well as cartons without straws. Repeat across the allowed carton wander and printed wrappers. Acceptance should report attachment faults separately from missing components and invalid observations.
Visible attachment does not measure bond strength
Visible contact does not measure adhesive strength. Add a separate retention test where the specification requires one.
Define the check after straw application
Share permitted photos or drawings, plus details of cartons with normal, loose and displaced straws, wrapper variations, guide-rail views and reject timing. Agree any physical sample arrangements after the initial assessment.
Straw applicator inspection for juice boxes defines the inspection point around the straw applicator and failed-carton handling. Select the required attachment evidence before deciding whether a presence sensor is sufficient.
Checking fork presence in instant-noodle packaging concerns a utensil inside a food pack. Straw attachment requires a connection relationship beyond the utensil-presence decision.
Review the indicative station budget and exclusions. Match the quoted views, product range and reject arrangement to the trial; changes to the production machinery and other exclusions remain separately agreed.
For line conditions around straw position relative to its carton, see dairy, juice and bakery lines.
Compare lighting, processing, interfaces and support in the HIKROBOT and other vision solutions guide. Agree sample testing, acceptance responsibilities and handover through the delivery process.