Nozzle for injection molding machines

Details Nozzle for injection molding machines Nozzle for injection molding machines

1979-11-02

1981-05-12

Reeves, Robert B.

Fluid sprinkling, spraying, and diffusing

With heating or cooling means for the system or system fluid

In terminal element

239590, 425549, B05B 1300

Patent

active

042667232

ABSTRACT:
A self-contained molding machine nozzle which is mountable in the mold die and has optimum material flow and heat control characteristics while reducing repair costs. The nozzle comprises an elongated body having a central passage, and a replaceable exit cap mounted at the forward end of the body, this exit cap carrying a torpedo which guides the material to the exit orifice. An external heater surrounds the body and extends over the cap which is provided with flats to facilitate removal and limit heat transfer. An air gap is provided between the cap and surrounding mold die to prevent undesired chilling of the tip by the cooled die.

REFERENCES:
patent: 2809073 (1957-10-01), Wahlert
patent: 2871517 (1959-02-01), Allard
patent: 3077636 (1963-02-01), Peters
patent: 4010903 (1977-03-01), Sakori et al.

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