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Ejector Pins & Sleeves
This animation shows a typical method to ejectthe cooled part from the mold. Round ejector pins are used to force the moldedpart out of the open mold. In this unit you will learn about ejector pin types, their application, and actuation.
Ejector Systems
This animation shows a Pin Type AcceleratedEjector. Accelerated ejectors help to eject molded parts that tend to stick to acore, causing a normal ejector pin set-up to damage and/or stress the ejectedarticle. This unit will cover a few of the typical ejection systems
Early Return Systems
This animation shows a Toggle-Lock System forearly ejector assembly return. The ejector pins must be returned before the campins contact and move the slide blocks in, or mold damage will occur. This unitwill also cover an internal early return system
Molding Part Geometry
This animation shows a system used to mold anundercut and then release it during part ejection. Special mold designs andsystems are required to eject undercuts or restrictions. This unit will coversome typical methods used.
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Molding Internal Threads
This animation shows a typical rack and pinionunscrewing mold. The internal molded threads act as an undercut to preventnormal ejection. The threaded core must be unscrewed out of the cap beforeejection. This unit will cover more about molding internal threads
Mold Plate Control
The animation shown uses an external Latch LockSystem to control stripper plate opening. The mold parting line is allowed toopen to a set amount, then the stripper plate is locked while the mold continuesto open. Controlling plate action can shorten cycle time and increaseproduction.
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