Die and Tooling Changeover Verification (Extrusion)

It covers the full handoff from setup to production release after a die or tooling change on an extrusion line. The checklist walks through job identification, lockout-tagout, die mounting and alignment, purge and cleanout, startup safety controls, first-piece quality, and formal release. It is designed to document that the line is ready before the first production run continues.

Use it after any extrusion profile changeover, die swap, tooling adjustment, or material transition that could affect profile quality or line safety. It is especially useful before restarting after maintenance, cleaning, or a long stop where the die, barrel transition zone, or controls may have been disturbed. If the line has not been altered and no setup variables changed, a full changeover verification may not be necessary.

This template is typically completed by an authorized setup technician, process technician, or quality inspector, with release by the person authorized to approve startup. The person performing the check should be able to verify torque, alignment, purge condition, and first-piece conformance, not just observe the line from a distance. If your site separates setup and quality approval, the template can capture both roles.

It should be performed for every die or tooling changeover and any restart where the previous setup cannot be assumed to remain valid. Many plants also use it after major maintenance, material changes, or corrective work on heaters, thermocouples, or die hardware. The frequency should match the risk of the change, not just the production schedule.

Yes, it supports documentation aligned with OSHA general industry expectations for machine safety, lockout-tagout, guarding, and safe startup practices. It also fits well with ANSI/ASSP safety program expectations and quality systems that require controlled release of product after setup changes. For food, medical, or regulated materials, you can add site-specific approval steps tied to your internal procedures and applicable standards.

Common misses include starting up before purge is complete, leaving a die slightly misaligned, overlooking loose clamps or missing hardware, and releasing a first piece without documented quality approval. It also helps catch heater or thermocouple connections that were not restored correctly after changeover. These are the kinds of setup defects that can create scrap, downtime, or safety exposure.

Yes, it is meant to be customized for your specific line, die family, polymer or alloy, and quality limits. You can add torque values, alignment tolerances, purge criteria, sample acceptance standards, and role-based approvals. Many teams also add product-specific photos, signoff fields, and links to work instructions or setup sheets.

A verbal handoff can miss hidden issues like contamination in the die exit, incomplete lockout verification, or a first piece that is close but not within spec. This template creates a repeatable record of what was checked, who approved it, and what was found before release. That makes changeovers easier to audit and easier to troubleshoot when a setup problem repeats.