| 摘要 |
PURPOSE:To permit the ejection of a plastic molded article and replace an inert and a core pin integrally freely, by a method wherein an ejector sleeve is provided with a notch so as to be inserted into a through hole loosely and freely under a condition of riding over the boundary of a receiving plate while the sleeve is fitted slidably and externally to the core pin. CONSTITUTION:When plastics, filled into a cavity 2, is solidified, a movable mold 1 is retreated into the direction of an arrow sign 9b. Next, when an ejector plate 7 is advanced against the energizing force of a spring 8 into an arrow sign 9a direction, a molded form 19 in the cavity 2 is ejected too the outside. In this case, the parts 6a, 6b of an ejector sleeve 6, on which notches 13a, 13b are provided, are inserted loosely into through holes 10a, 10b and will never cause interference with the other parts of the ejector. Thereafter, the ejector plate 7 is retracted in arrow sign 9b direction and an ejecting work is finished. When an insert 3 is replaced, a receiving plate 4 and the core pin 5 may be removed from a template by only releasing a connection from the template.
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