Articulated core blade assembly for use in an injection molding

Details Articulated core blade assembly for use in an injection molding Articulated core blade assembly for use in an injection molding

1992-05-14

1994-01-25

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With product ejector

249180, 249185, 264318, 264334, 425557, 425DIG58, B29C 4544

Patent

active

052811271

ABSTRACT:
An articulated core blade assembly provides improved release of undercuts and similar structures in mold cavities. The articulated core blade assembly includes a retainer secured to an ejector plate, a lifter which moves the product and releases the undercut and a pivot arm which couples the lifter to the retainer. A first knuckle joint couples one end of the pivot arm to the retainer and a second knuckle joint couples the other end of the pivot arm to the lifter. The knuckle joints provide limited pivoting motion about parallel, spaced-apart axes. The articulated core blade assembly may be utilized in a broad range of injection molding machines utilizing plastics, metals and other injection molded materials.

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