Insert for barrel extruders

Details Insert for barrel extruders Insert for barrel extruders

1992-04-07

1993-05-11

Simmons, David A.

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

366 84, 366149, 425192R, 425204, 4253781, B29C 4782

Patent

active

052099377

ABSTRACT:
A segmented barrel extruder device for extrusion and having a plurality of segments enclosing an extruder barrel aligned on an axis. The segments include axially perpendicular rectangular end flanges having exposed sides and a central portion for housing an extruder barrel. The flanges have aligned straight line paths for fluid flow in a plane perpendicular to the axis. Accordingly, the paths each intersect two exposed sides without intersecting the central portion. The segments also include an extruder barrel between flanges. The segments have a housing having straight axial channels which are connected to the paths in the flanges to conduct fluid from points along one path in each path to of points along a corresponding path. The barrel extruder also includes a centered portion aligned with the flange central portion. There is also provided an extruder barrel insert sized to fit in the centered portion of the barrel having a key for preventing rotational movement. The insert has extruder bores for engagement with a screw and has high resistance to wear compared to the wear resistance of the extruder barrel. Finally, the device includes an inlet and an outlet for fluid flow.

REFERENCES:
patent: 3416774 (1968-12-01), Fritsch
patent: 4117583 (1978-10-01), Gnadig et al.
patent: 4235581 (1980-11-01), Anders
patent: 4385876 (1983-05-01), Scherping et al.
patent: 4415268 (1983-11-01), Brinkmann et al.
patent: 4643660 (1987-02-01), Capelle
patent: 4702695 (1987-10-01), Blach

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