Plastic article or earthenware shaping or treating: apparatus – With safety feature
Patent
1984-01-09
1986-03-25
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With safety feature
425152, 425575, 425183, B29C 4517, B29C 4584
Patent
active
045780269
ABSTRACT:
A safety cover arrangement for the die closing unit of an injection molding machine equipped with a program-controlled die exchange mechanism using a translation table with two die emplacements alternatingly moving into a central transfer position for the die assemblies, the cover assembly comprising a central stationary cover portion with a vertical panel portion and an adjoining horizontal panel portion, two rectangular access openings flanking the stationary cover portion on opposite sides, and two sliding covers with matching vertical and horizontal panels closing said openings, the covers being openable, one at a time, by moving behind and below the central stationary cover portion, following the release of a cover latching mechanism by a cam on the translation table. Each sliding cover carries a control rail for the actuation of a pair of limit switches shutting down the machine operation, when the cover is opened.
REFERENCES:
patent: 3728057 (1973-04-01), Grundman
patent: 3877858 (1975-04-01), Smith
patent: 3973888 (1976-08-01), Hehl
patent: 3982869 (1976-09-01), Eggers
Erhohte Wirtshaftlichkeit mit Arburg-Schiebeisch.
Geiger Joseph A.
Heitbrink Timothy W.
Woo Jay H.
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