July 14, 2022

Mold Ejection System

blog aco mold

During each injection molding cycle, molded parts need to be released from the cavity by ejection system, it is also called de-molding system, design of ejection system affect product quality and production efficiency.

See below figure, a complete mold ejection system include:

  • ejection plate, fixation plate, mold base plate.
  • screws to fix the these plates.
  • ejector pin, ejector block, sleeve.

mold ejector system

Ejection distance is normally defined at 5-10mm, or 2/3 of the length of some of the plastic parts with big draft angle.
When no special ejection problems are expected, the standard ejector pin will perform well, a sleeve ejector is used to provide uniform ejection around core pin.

A central valve ejector is frequently used combination with air ejection on cup shaped parts where vacuum might exist. The air valve is thus only a secondary ejection device. A stripper plate or ring is used when ejector pins or valves would not operate effectively. The stripper plate is often operate by means of a draw bar or chain.

Related Blogs

blog aco mold
Glossary of plastic injection molding terms
Some glossary of terms related with plastic parts design, mold making and plastic injection molding. Antistatic Agent: Additive used to help eliminate or lessen static electricity from the surface of...
blog aco mold
Eliminate glass fiber marks on injection molded parts
There is virtually no way to completely eliminate the appearance of glass fibers at the surface of an injection molded part, particularly with this high a loading percentage. As you...

Table of Contents

Tell us your request right now and contact us today about getting started on your next project together!

Email:
sales@acomold.com

Or Fill Out The Contact Form Below:

Support Your Business with Better Molding Solution

Contact Info

Copyright © 2024, ACO Mold. Terms of Service and Privacy Policy. All rights reserved.  Powered by ACO MOLD.

1 1.png

Join Our Network

Please email to sales@acomold.com
or fill out the contact form below: