Injection screw set for an injection molding machine

Details Injection screw set for an injection molding machine Injection screw set for an injection molding machine

1994-09-09

1996-05-28

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 90, B29B 104

Patent

active

055204546

ABSTRACT:
An interchangeable injection screw for use in an injection molding machine is disclosed. It comprises: (a) an interchangeable feeding section, an interchangeable compression-and-melting section, an interchangeable metering-and-mixing section, and an interchangeable screw head, wherein the interchangeable feeding section, the interchangeable compression-and-melting section, the interchangeable metering-and-mixing section and the interchangeable screw head can severed from each other; (b) a splined shalt integrally formed with the interchangeable feeding section and extending in front thereof so as to sleevedly receive, in order from the feeding section, the compression-and-melting section and the interchangeable metering-and-mixing section; and (c) a screw means for affixing the interchangeable screw head to the splined shalt so as to form a complete injection screw. In a preferred embodiment, the splined shalt contains a female screw stub at its front to threadably receive a male screw bolt provided in middle of the internal portion of the interchangeable metering-and-mixing section, so as to provide adjustable length of the injection screw.

REFERENCES:
patent: 2200997 (1940-05-01), Royle
patent: 4045401 (1977-08-01), Stenmark
patent: 4334785 (1982-06-01), Blach
patent: 4600311 (1986-07-01), Mourrier
patent: 5304000 (1994-04-01), Loomans

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