Page 44 - Injection Molding Advanced Troubleshooting Guide

26 2 Troubleshooting Tool Kit

„ „2.18„ Grinder/Stones

Access to grinding tools and stones will allow vents to be opened up on a mold
suffering from venting related problems. Caution with these items is extremely
important so as not to cause damage to the parting line of the mold, which would
in turn lead to flash.

„ „2.19„ Camera

With cell phone cameras, this is an easy item to have on hand. Using a camera to
document defects and impact of changes will allow a clear way to communicate the
problem and review any changes.

„ „2.20„ Material Data

When troubleshooting it is key to have the material molding recommendations
available. This provides an opportunity to cross reference important process val-
ues such as melt temperature, mold temperature, drying parameters, venting, and
gate recommendations as well as many other process details. Make sure that this
data is readily accessible for all troubleshooters.

„ „2.21„ Scale

A scale is critical for accurately measuring part weight. Without an accurate scale
it is not possible to replicate a fill only shot, which is one of the key checks for a
molding process. Also having the ability to measure shot weight will allow analysis
of dryer throughput, and approximate barrel residence time.