Mold clear detector

Details Mold clear detector Mold clear detector

1981-11-09

1983-11-01

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Means responsive to abnormal condition completely stop...

164154, 2502221, 2502222, 250561, 425154, B29C 100, B29C 1100

Patent

active

044127987

ABSTRACT:
An apparatus for detecting the retention of non-ejected parts in the cavity of a plastic molding machine and inhibiting the operation of the molding machine in response thereto. The apparatus employs a set of photocells coupled via associated fiber optic cables to a comparator. The retention of a molded part subsequent to the completion of a molding cycle is indicated by the interruption of a light beam generated by at least one of the photocells. The optical signal is processed by the comparator and associated circuitry so as to activate a mold inhibiting relay.

REFERENCES:
patent: 3105907 (1963-10-01), Colten et al.
patent: 3117348 (1964-01-01), Rees
patent: 3303537 (1967-02-01), Mislan
patent: 3525382 (1970-08-01), Devol
patent: 3642401 (1972-02-01), Wilson
patent: 3836299 (1974-09-01), Houston et al.

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