Two step ejector structure for a mold for injection molding or t

Details Two step ejector structure for a mold for injection molding or t Two step ejector structure for a mold for injection molding or t

1979-11-14

1980-12-16

Flint, Jr., J. Howard

Static molds

Including means to apply force to remove or release product...

Pin or sleeve means

249 59, 425436R, 425438, 425DIG58, B29C 700, B29F 114

Patent

active

042391741

ABSTRACT:
A two-step ejector structure for molds for injection molding and the like has a first ejector member arranged to be directly acted upon for ejection and to act upon an ejector pin carrier which is to be displaced in the first and second ejector steps, and a second ejector member acting upon a second ejector pin carrier which is to be displaced only in the first ejector step, and a coupling to accomplish the movement of the second ejector member during a predetermined first portion of the ejector movement of the first ejector member and thereafter release the first ejector member from the second ejector member and lock the second ejector member to a member securedly connected to a tool.

REFERENCES:
patent: 3125801 (1964-03-01), Fields
patent: 3433450 (1969-03-01), Brunner et al.
patent: 3479698 (1969-11-01), Shaughnessy
patent: 3516302 (1970-06-01), Mixttart
patent: 3660001 (1972-05-01), Roehr
patent: 3718415 (1973-02-01), De Felice
patent: 3737268 (1973-06-01), Ryder
patent: 3844703 (1974-10-01), Hutter
patent: 3940103 (1976-02-01), Hilaire
patent: 3986805 (1976-10-01), Haines
patent: 4019711 (1977-04-01), Altenhof et al.
patent: 4050666 (1977-09-01), Van Tichelt

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