Screw-type extrusion machine having tie rods loaded by a pre-str

Details Screw-type extrusion machine having tie rods loaded by a pre-str Screw-type extrusion machine having tie rods loaded by a pre-str

1998-09-11

2000-01-18

Cooley, Charles E.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

425192R, B29B 780

Patent

active

060152265

ABSTRACT:
In a screw-type extrusion machine comprising a composite casing which comprises casing sections fitted together in a longitudinal direction, the casing sections being tightly tautened relative to each other by a plurality of tie rods which extend parallel to each other in the longitudinal direction of the casing on the outside thereof, it is provided with a view to avoiding any over-stressing of the tie rods in the hot condition and to avoiding any leakage between the casing sections in the case of low temperatures and non-uniform temperature distribution, that the tie rods are loaded in the longitudinal direction by a pre-stressed spring system.

REFERENCES:
patent: 2765153 (1956-10-01), Gielow et al.
patent: 3030898 (1962-04-01), Freed
patent: 4117583 (1978-10-01), Gnadig et al.
patent: 4289410 (1981-09-01), Anders
patent: 4365946 (1982-12-01), Anders
patent: 4384955 (1983-05-01), Nakakura
patent: 4408887 (1983-10-01), Yamaoka
patent: 5665232 (1997-09-01), Schlegel

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