Direct answer
Variation usually begins with changing product or packaging conditions, unstable presentation, unsuitable settings or wear in the process. For cap feeding and sorting, confirm the result with representative product and packaging before altering several variables at once.
Likely causes
- Product, pack or environmental conditions are changing during the run in the cap feeding and sorting process.
- The presentation or detection point is not repeatable in the cap feeding and sorting process.
- Settings are compensating for a worn or unsuitable component in the cap feeding and sorting process.
- The acceptance method is visual when the result should be measured in the cap feeding and sorting process.
What should be checked first?
- Measure a representative sample at the start, middle and end
- Record product temperature, density, viscosity or bulk condition
- Check pack dimensions and supplier-batch variation
- Inspect guides, sensors, valves, seals and contact parts
- Run one controlled setting change at a time
- Compare the easiest and hardest normal format
- Define a numerical pass limit
What should you compare before buying?
Compare the operating principle against the actual product, pack range, sustained good output, measurable quality limits, cleaning, changeover and site conditions. Use representative samples and agree what will be demonstrated during testing before delivery and after installation.
Machinery options for this problem
Start with the first option below. It most closely matches the product, pack and problem described on this page. The other options may suit a wider line or a different level of automation.
Related cap feeding and sorting questions
Capping and closuresHow can I increase cap feeding and sorting production speed?
Increase sustained good output by identifying the actual constraint, separating machine cycle time from handling time and removing the first recurring cause of waiting.
See the checks →
Capping and closuresWhy does cap feeding and sorting equipment keep jamming or stopping?
Find the first point where control is lost. A downstream alarm is often only the final symptom of poor feeding, transfer, detection or format control.
See the checks →
Capping and closuresHow can I reduce waste when handling cap feeding and sorting?
Measure product loss, rejected packaging, rework and start-up waste separately, then remove the largest repeatable cause.
See the checks →