| 摘要 |
A mould core, for use in the injection molding of fittings which have at least one annular groove at the inside, is formed in the region of the annular groove of the molding by segments (8, 8') which can be moved inwardly to such an extent that the mold core can be moved out of the annular groove in the axial direction, wherein the inward and outward movement of the segments (8, 8') is produced by rotation of a control shaft (11) and wherein each of the segments (8, 8') which are only radially movably guided in a stationary guide disk (15) is provided with a projection (14) which engages into a guide slot (13, 13') in a control disk (12) which is fixedly connected to the control shaft (11). <IMAGE>
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