Extruder

Details Extruder Extruder

1983-05-25

1985-04-02

Simone, Timothy F.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 90, 366601, B29B 106

Patent

active

045084548

ABSTRACT:
In an extruder, for extruding thermoplastic synthetic material or rubber or for use for pressing water out of a material, a screw rotates in a cylindrical chamber and helical conveying lands provided on the screw are interrupted at positions at which pins project into the chamber thereby forming grooves to receive the pins. To sense breakage of a pin, for example caused by metal particles in the extrudate, signal-generating means are provided in a blind bore in each pin, receipt of a signal from the signal generating means causing the screw to be stopped from rotating thereby to prevent further damage.

REFERENCES:
patent: 4178104 (1979-12-01), Menges et al.
patent: 4361081 (1982-11-01), Howard

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