Mold parts Chase

A mold in which a split cavity block is assembled in a chase to permit the forming of undercuts in a molded piece. These parts are ejected from the mold and then separated from the molded piece. 

Chase (shoe) n. An enclosure of any shape used to (1) Shrink-fit parts of a mold cavity in place. (2) Prevent spreading or distortion in bobbing, (3) Enclose an assembly of two or more parts of a split-cavity block and (4) A rectangular metal frame in which type and plates are locked up for letterpress printing. 

Parts A and B are ejected from the mold and then separated from the piece. These sections are made with a taper to fit the chase or honsing. Mold sections and other loose parts are generally called wedges. 

Figure S.7 Cross section of a split cavity mold for producing a molded spool. A and B form the two halves of the cavity. Chase, C, folds the halves together. Other parts are D, core pin E bottom plate and F, the force plug or plunger. (Ref Buckleitner, E.V., ed., Basic Mold Types and Features , Plastics Mold Engineering Handbook, S " ed.. Chapman Hall, New YotIc)...

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