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Analysis and Explanation of Ejection System
Below is the analysis and explanation of the ejection system for your check and reference. If you have any other questions, please feel free to contact us!
Name |
Analysis and Explanation |
| 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 |
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