Plastification cylinder for injection molding machines

Details Plastification cylinder for injection molding machines Plastification cylinder for injection molding machines

1987-02-05

1988-09-13

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

219301, 219424, 219425, 366146, 366266, 425550, B29C 4574

Patent

active

047706236

ABSTRACT:
A plastification cylinder of an injection molding machine includes an outside cylinder and an inside cylinder, the inside cylinder including heating elements and temperature sensors therearound and defining a screw antechamber at one end thereof, the outside cylinder being shaped so that the end thereof which surrounds the end of the inside cylinder that defines the screw antechamber is in a pressure fit contact with the inside cylinder while the other end of the outside cylinder is spaced away from the corresponding end of the inside cylinder, thereby providing an annular chamber therebetween. Connecting elements extending through the outside cylinder can be used to cause a fluid heating or cooling medium to flow through the annular chamber.

REFERENCES:
patent: Re23839 (1954-06-01), Magerkurth et al.
patent: 3055074 (1962-09-01), Garvey
patent: 3991153 (1976-11-01), Klausner et al.
patent: 4038519 (1977-07-01), Foucras
patent: 4118163 (1978-10-01), Lee
patent: 4235581 (1980-11-01), Anders
patent: 4253011 (1981-02-01), Hinz
patent: 4319871 (1982-03-01), McAllster
patent: 4686354 (1987-08-01), Makin

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