Worked scenario
Cavities producing flash because maintenance was by shot count nobody kept
Mould maintenance is scheduled by usage, and a processor that does not count usage maintains by symptom instead.
3 min read
An injection tool has a service interval expressed in shots. Tools move between machines, so a machine counter does not answer the question.
Maintained by symptom
Without a per-tool count, service happens when parts start showing flash or short fills — which means it happens after quality has already been affected and scrap has already been produced.
History belongs to the tool
A tool's service record, retained over years, is what allows a processor to judge whether a recurring defect is a maintenance interval problem or a design one. Kept per machine, that history is meaningless.
What changes
- Shot count tracked per tool, not per machine
- Maintenance scheduled against usage and recorded
- Tool condition history retained across its life
- Quality issues correlated with tool usage since service
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