The usual default for the plastic mold system in injection molding process

For each mold, we also meet the various issues in the injection molding process. Below are the common issues we often meet.

• Position: Cavity

Defaults: stick to the cavity or damage the cavity steel when pick up part Reasons: mold temperature is too high, hold time or pressure is too big, the tool to pick up part inappropriate

• Position: core

Defaults: pins broken or plastic part damage core when mold close Reasons: mold temperature is too high, hold time or pressure is too big, the part draft angle is not enough, plastic part haven't been pick out complete when close mold

• Position: Runner

Defaults: stick to the cavity Reasons: part draft angle is insufficient, Nozzle radius on the sprue mismatch with the injection machine

• Position: Guide pin / Guide bush

Defaults: Wear out Reasons: didn't do good job on lubrication, didn't clean dust, half mold fall down

• Position: Ejector

Defaults: Ejector broken Reasons: no lubrication on the ejectors, unbalance of the ejection, the force to stick to part is too big, ejector is too long