Apparatus for changing screen devices

Details Apparatus for changing screen devices Apparatus for changing screen devices

1977-03-28

1978-04-04

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

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

210232, 210DIG15, 366 87, 425183, 425185, 425192R, 425199, 425376R, B29F 300

Patent

active

040824870

ABSTRACT:
The disclosure concerns apparatus which automatically performs screen-changing functions associated with the use of screen devices for filtering extruded plastic materials. The apparatus includes a slide assembly with two apertured recesses for receiving screen devices, and mechanisms for aligning the recesses alternatingly with a direction of advance of the extruded plastic material. A screen device is replaced within one recess, as a screen device within the other recess filters the extruded plastic material. Such screen device replacement is provided through the automatic, sequential operations of screen device ejection, screen device carrier, screen device introducing and screen device reloading mechanisms.

REFERENCES:
patent: 3007199 (1961-11-01), Curtis
patent: 3059276 (1962-10-01), Yokana
patent: 3804758 (1974-04-01), Cooper et al.
patent: 3856277 (1974-12-01), Tiramini
SPE Journal, June 1963, pp. 547-549, Schultz, F. C., "Extruder Screening Devices."

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