Filter screen exchanging apparatus for plastic extruder

Details Filter screen exchanging apparatus for plastic extruder Filter screen exchanging apparatus for plastic extruder

1978-03-23

1979-09-11

Rosenbaum, Mark

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Plural wear or shaping surfaces mounted for alternative use

210DIG15, 425185, 425192R, 425199, 425376R, B29F 302

Patent

active

041673840

ABSTRACT:
A filter screen exchanging device having a pair of parallel slide plates 12 disposed in branched passages DK, EL of a plastic resin extruder 10. Each slide plate has a shouldered hole 14 on one side accommodating a breaker plate 15 having a plurality of flow nozzles 20, a filter screen 17, and a threaded screen cap 18 having a plurality of trapezoidal apertures therein. The other side of each slide plate is blind, and the plates are alternately transferred for screen and cap exchange by hydraulic cylinders 13. The extruder operation is thus continuous, the breaker plate is not exchanged with each screen and cap replacement, and the screen mounting arrangement is designed to minimize air entry and resin leakage during slide transfer.

REFERENCES:
patent: 937676 (1909-10-01), Elliott
patent: 2513795 (1950-07-01), Gliss
patent: 3503096 (1970-03-01), Marianelli

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