| 摘要 |
Disclosed herein is, amongst other things, a molding apparatus that includes a core ring (140, 340, 440, 540, 640, 740) that is configured to seat, in use, around a core insert (120, 320, 420, 620) in a mold stack (116, 216, 316, 416, 516, 616, 716). The core ring (140, 340, 440, 540, 640, 740) is configured to be received, at least in part, within a pocket (152) that is defined within a split insert (150) of the mold stack (116, 216, 316, 416, 516, 616, 716). The core ring (140, 340, 440, 540, 640, 740) is also configured to define at least a portion of a molding cavity (119) having a core ring-to-split insert parting line (180) that is within the pocket (152) of the split insert (150). |
| 主权项 |
1. A mold stack, comprising:
a core insert, a core find, and a split insert that are configured to cooperate, in use, to define a molding cavity; the core insert defines a ring seat on a medial portion thereof upon which the core ring may be seated, in use, in cooperation with a mounting interface thereon; the split insert defines a pocket that extends coaxially through a bottom projecting portion thereof within which to receive a projecting portion of the core ring; the core ring and the split insert being further configured to define a core ring-to-split insert parting line that is within the pocket of the split insert; and a lock ring to retain the core insert; a top portion of the molding cavity is split between the core ring and the core insert; an inner surface of the core ring defines a core ring-to-core insert split line in cooperation with an outer medial surface of the core insert; the core ring defines a split line vent that is configured to cooperate, in use, with the core insert along the core ring-to-core insert split line for venting, in use, air from the molding cavity; wherein, the core ring defines a branch conduit that is configured to fluidly connect the split line vent with a trunk pressure conduit that is defined between the core insert, the core ring, and the lock ring of the mold stack. |
