Safety mechanism for injection-molding machine provided with tak

Details Safety mechanism for injection-molding machine provided with tak Safety mechanism for injection-molding machine provided with tak

1979-11-15

1981-01-06

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

With safety feature

Secondary means to prevent accidental motion, or means to...

425556, 425436R, 425444, B29C 700, B29F 114

Patent

active

042433649

ABSTRACT:
A take-off plate, mounted near one of two relatively movable mold portions and insertable therebetween to remove freshly molded workpieces, enters a slot of a guide block rigid with the same mold portion upon moving from a retracted to an inserted position, the guide block also having a bore intersecting the slot and extending in the direction of mold motion. A pin on the other mold portion traverses the bore upon closure of the mold to prevent untimely insertion of the take-off plate; conversely, the take-off plate in its inserted position obstructs the bore to prevent premature mold closure.

REFERENCES:
patent: 2582891 (1962-01-01), Strauss
patent: 2675583 (1954-04-01), Scherry
patent: 2739349 (1956-03-01), Strauss
patent: 2923976 (1960-02-01), Strauss
patent: 3040378 (1962-06-01), Rodgers et al.
patent: 3081486 (1963-03-01), Skvorc
patent: 3142863 (1964-08-01), Mazzoni
patent: 3359598 (1967-12-01), Bucy
patent: 3907483 (1975-09-01), York
patent: 3947208 (1976-03-01), Broderick
patent: 4163540 (1979-08-01), Cafarelli

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