Page 263 - Injection Molding Advanced Troubleshooting Guide

27 Excessive Cycle Time

„ „27.1„ Description

Parts are running with cycle times that are causing capacity issues, increased cost,
etc.

„ „27.2„ Excessive Cycle Time Troubleshooting
Chart

Table 27.1 shows the troubleshooting chart for excessive cycle time.

Table 27.1 Troubleshooting Chart for Excessive Cycle Time
Molding Process Mold Machine Material
high mold temperature lack of cooling slow clamp speed regrind
high melt temperature damaged or plugged slow reaction times additive package
cooling lines
timers set higher than gate size slow automation
required
slow fill speeds runner and sprue size ejection speed and
strokes
long cooling time poor ejection
thick sections
thermal isolation of hot
runner