Injection Mould Tool PM
A scheduled preventive maintenance check of the injection mould tool to inspect, clean, and service all critical cavity, cooling, and ejector components, ensuring consistent moulding performance and minimizing the risk of part defects or unplanned tool downtime during production operations.
MIUK – Pennywell
09/24/2026
Injection Mould Tool PM
Preventive maintenance for injection mould tools to ensure consistent part quality and extend tool life. Covers cleaning of cavities, cores, and vents, inspection of parting lines, guide pins, bushings, and ejector systems, along with checks for wear, corrosion, or damage to critical surfaces.
General appearance
Lifting Equipment
if the answer is "oneOf [The eyebolts/fixed lifting points are present, free from damage, and have unique serial numbers.,The lifting equipment is present, free from damage, but I have ground unique serial numbers on them (e.g. XXX-1)]"
Picture of serial number
Add or drag pictures
if the answer is "oneOf [The lifting equipment is damaged and has been replaced.]"
Picture of damaged lifting equipment
Add or drag pictures
if the answer is "oneOf [The lifting equipment is damaged and I cannot repair or replace it.]"
Why can't it be replaced?
Travel strap
if the answer is "oneOf [The travel strap and/or its bolts are either missing or damaged, but I cannot repair/replace it.,The travel strap and/or its bolts are either missing or damaged, but I have repaired it.]"
Picture of damaged travel strap
Add or drag pictures
Inspect the tool location radius on the fixed half backplate for damage/burrs.
Fixed half
What is the gate type?
if the answer is "oneOf [Gate is in NG condition]"
What is the gate type and problem? Have you addressed this during PM? If not, raise a follow-up work order.
Using a cloth, clean all grease from the fixed half and inspect its condition.
if the answer is "oneOf [Cleaned, defects found, addressed during PM.]"
What defect(s) were found, and what did you do to address them?
Using a scouring pad, clean and inspect all fixed half shutoffs and gas vents/channels.
if the answer is "oneOf [Cleaned, defects found, addressed during PM.]"
What defect(s) were found, and what did you do to address them?
If grained, use cloths to clean the grained A-surface.
If polished, use tissues to clean the A-surface. Polishing compound may be used if there are scratches.
Take a picture of the fixed half.
Add or drag pictures
Moving Half
Remove, clean and inspect all guide rails for pickup. Replace bolts/washers if damaged.
Remove all side-core stops (backstop, springclip dowels, cumsa retainers) and inspect for damage (including bolts)
Remove all side-cores from the moving half.
Using a scouring pad, clean all side-core shutoffs.
Using a cloth, clean any debris from the moving half and side-cores
Inspect and clean the gas vent block if applicable.
Inspect the moving half and side-cores for any defects.
if the answer is "oneOf [Defects found, addressed during PM.]"
What defect(s) were found, and what did you do to address them?
Ejection
Cycle the ejection, holding in both the pull and set positions, checking for leaks.
Cycle the ejection to its set position, and measure the maximum ejector pin step (mm).
Check all ejection/core signals. Make sure they do not activate early.
if the answer is "oneOf [Issues with core signals / early activation. Repaired during PM (do not return tools to production with core signal concerns)]"
What was the issue, and what did you do to fix it?
Moving half (re-assembly)
Grease all drafted surfaces (e.g. where sidecore shuts off) with Hasco A7002 if applicable.
Put side-cores back into tool with greased guide rails. Do not overtighten - core should be able to move forward and backward by hand.
Re-fit side-core stops (backstops, springclip dowels, cumsa retainers)
Shot counter
if the answer is "oneOf [Shot counter present.]"
Current shot count:
Meter name
Unit
Update the date grid/dial if necessary, and record the month/year below.
Hot runner
Inspect the condition of all harting sockets.
if the answer is "oneOf [Issues with harting sockets/clasps, addressed during PM.]"
What was the issue, and what did you do to fix it?
if the answer is "oneOf [Issues with harting sockets/clasps, unable to address during PM.]"
Why can't you fix this during a PM?
How long does it take for the hot runners to reach 220°C? (Minutes) MUST circulate water if the tool is fitted with sequential gates.
Are all hot runner zones working?
if the answer is "oneOf [No. Addressed during PM]"
What did you do to fix the issue?
if the answer is " "
Why can't you fix the issue? Follow-up work order required.
If fitted, test the sequential gates when the tool is up to temperature.
if the answer is "oneOf [Sequential gates tested. Defects found and addressed during PM.]"
What was the issue, and what did you do to fix it?
if the answer is "oneOf [Sequential gates tested. Defects found but unable to address during PM.]"
Why couldn't you fix it? Follow up work order is required.
Cooling
Connect the tool to the DME CleanCare unit and record flow pre-cleaning. (Litres per minute)
Pressure test the tool before adding chemicals.
Run the cleaning cycle for 30 minutes and record flow post-cleaning. (Litres per minute)
Please sign to confirm the PM is true and complete.
Click here to sign
Source: MIUK – Pennywell (Community Member)