Download our Lifters Document
Lifters are angled, pin-like mechanisms in an injection mold that are used to create and release internal undercuts in a plastic part. They are designed to move in an angled path as the mold opens, allowing for the ejection of features that a simple, straight ejector pin could not remove without damaging the part. Lifters form internal features like holes, grooves, or indentations that would otherwise be trapped in the mold cavity.
After the molding cycle, the mold opens and the ejector plates are pushed forward. The lifter moves upward at an angle to push the product out of the mold, clearing the undercut feature.
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