초록 ▼

Two mold halves together form a mold cavity and one of the mold halves is fitted with a plurality of ejector rods that can be reciprocated so as to push a molded article out of that half. At least some of these ejector rods are formed with throughgoing passages terminating adjacent the inner ends th

Two mold halves together form a mold cavity and one of the mold halves is fitted with a plurality of ejector rods that can be reciprocated so as to push a molded article out of that half. At least some of these ejector rods are formed with throughgoing passages terminating adjacent the inner ends thereof at nozzle openings. Air and a treatment fluid, such as a demolding liquid, can be injected into the mold interior through these rods, the nozzle openings in the ends of the rods being covered during the normal molding operation.

대표청구항 ▼

A molding apparatus comprising: a first mold half; a second mold half forming with said first half a mold cavity and formed with a bore between said cavity and the exterior; means operatively connected to said first mold half for moving same toward and away from said second mold half to open and clo

A molding apparatus comprising: a first mold half; a second mold half forming with said first half a mold cavity and formed with a bore between said cavity and the exterior; means operatively connected to said first mold half for moving same toward and away from said second mold half to open and close said cavity; an elongated ejector element in said bore having an inner end displaceable into said cavity and an outer end lying outside said mold halves, said element being formed with a passage extending between said ends; means operatively connected to said element and shiftable relative to said second mold half for displacing said element between a first position with said inner end within said cavity to eject a molded article from said cavity and a second position with said inner end generally flush with an inner surface of said cavity; and means including a source of mold-wall treating release liquid connected to said passage at said outer end for injecting a portion of said liquid into said cavity in said first position of said element, said ejector element being formed with means for training a spray of the liquid from said passage upon a wall of said cavity.