Ejection System

Name	Analysis and Explanation of Ejection System
ejection system	Ejection system (also called knock-out system or part ejection system) – Components that safely eject molded parts without damage
sprue puller	Sprue puller (also called runner hook pin) – Used in 3-plate molds to remove runner slugs, preferably modified from standard ejector pins
stripper bar	Square ejector pin (also called blade ejector) – Square-shaped ejection component connected to the ejection system
stripper base	Ejector pad – Support base beneath ejector blocks for smooth pin movement
stripper rod	Ejector tie rod – Connects square ejectors to the ejection system, preferably modified from standard pins
polyurethane spring	Delayed ejection rod – Typically installed below return pins to provide delayed ejection
ejector bar	Square ejector (or ejector blade)
ejector base	Lifter base – Mounting block connecting lifters to the ejector plate
ejector pin	Ejector pin (standard round type, also called knock-out pin)
ejector blad	Flat ejector pin (also called blade ejector pin)
flexi core	Spring-loaded angle pin (also called elastic angle lifter pin) – Made of spring steel, commonly used for angled lifters
ejector sleeve	Ejector sleeve (available in metric/imperial sizes, also called ejector bushing)
ejector sleeve pin	Ejector sleeve core (available in metric/imperial sizes)
retaining block	Ejector sleeve retainer pin – Typically used to secure sleeve pins on the bottom clamp plate or sprue pullers in 3-plate molds
ejector return assembly	E.g: DME standard components
tension link	E.g: DME standard components
puller bolt	Mold opening spring – Installed on secondary parting surfaces to provide opening force
suport pin	Spring guide rod – Provides support and guidance for springs
compression spring	Nozzle spring (for hot runner nozzles)
temp. resist spring	Spring (general term, also called coil spring)
yellow spring	DME-standard equivalent spring (preferred selection)
silver spring	Silver spring (standard grade)
blue spring	Blue spring (higher grade, also called blue coil spring)
red spring	Red spring (heavy-duty grade)
circular section spring	Miniature coil spring – Small-diameter spring with light force
nitrongen spring	Nitrogen gas spring – Compact, high-force, long-stroke elastic component using pressurized nitrogen (1 million cycle life)
ejector rod	Machine ejector rod (for injection molding machine)
air valve	Air inlet nozzle – For gas-assisted molding or pneumatic ejection systems
air poppet valve	Pneumatic ejector (also called air ejector pin or air poppet)
accelerated knock-outs	Secondary ejector (e.g., DME standard component AKO-1)
rotary block	Ejector accelerator cam – Pivots on pins to boost ejector movement