Injection assembly for an injection molding machine

Details Injection assembly for an injection molding machine Injection assembly for an injection molding machine

1994-12-20

1996-07-30

Scherbel, David

Agitating

Rubber or heavy plastic working

Rotating and reciprocating stirrer

366 79, 92 2, 425145, B29C 4548

Patent

active

055404952

ABSTRACT:
The extruder screw drive has a first and a second motor, a screw mechanism connected to the first motor and to the extruder screw for translating it in the extrusion cylinder, and a slide mechanism connected to the second motor and to the extruder screw for rotating it in the extrusion cylinder. The screw mechanism and the slide mechanism are coaxial and partially fit into one another to provide an axially compact arrangement. The motors can be hollow shaft electric motors axially aligned together, and pressure regulated hydraulic axial force can be added to the extruder screw during plasticating as it retracts due to increased volume of plastic at an output end of the extrusion cylinder.

REFERENCES:
patent: 3510915 (1970-05-01), Johansson
patent: 3613169 (1971-10-01), Ziegler
patent: 3808953 (1974-05-01), Herbst
patent: 3822057 (1974-07-01), Wheeler
patent: 3865354 (1975-02-01), Burpulis et al.
patent: 3908968 (1975-09-01), Bielfeldt et al.
patent: 4176966 (1979-12-01), Bornemann
patent: 4693676 (1987-09-01), Inaba
patent: 4824255 (1989-04-01), Wohlrab
patent: 5304051 (1994-04-01), Meyer

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