Two-Stage Ejection: Why One-Step Ejection Fails in Deep Cavity Molds
Автор: Moldevo | Injection Mold Design • DFM • Moldflow
Загружено: 2025-12-26
Просмотров: 36
Описание:
Why does one-step ejection often fail for deep cavity plastic parts?
After cooling, deep or thin-walled parts strongly grip the core.
If ejected in a single stroke, this often leads to:
• Drag marks
• Part deformation
• Cracking or surface whitening
This animation demonstrates a two-stage ejection strategy:
Stage 1:
A short, slow ejection stroke to break vacuum and release grip.
Stage 2:
A controlled full ejection to safely remove the part.
Key engineering considerations:
• The first stroke is NOT meant to fully eject the part
• Ejector stiffness and support length are critical
• Ejection sequence must be locked with core-pull actions
At Moldevo, we design demolding sequences based on physics —
not trial-and-error.
========================
External Injection Mold Design & DFM Support
for injection mold projects (EU / US / International).
• Reduce mold trial failures before steel cutting
• Avoid costly rework & delays
• Clear 3D mold design with engineering notes
Contact: [email protected]
========================
#InjectionMolding #MoldDesign #TwoStageEjection #DFM #PlasticsEngineering #Moldflow #Moldevo
Повторяем попытку...
Доступные форматы для скачивания:
Скачать видео
-
Информация по загрузке:
