Injection molding nozzle

Details Injection molding nozzle Injection molding nozzle

1985-05-06

1987-03-24

Miles, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

425570, 26432815, 26432811, B29C 4520

Patent

active

046522301

ABSTRACT:
An injection mold nozzle is disclosed of the "bodyless" type, with a tip insert surrounding a needle in a central flow passage, each extending forwardly to protrude from the main body of the nozzle into a sprue cavity adjacent the mold cavity and communicating with an injection port. The tip insert conducts heat into the needle and material in the sprue cavity to maintain temperature of the material while eliminating the impression on the part of a full body nozzle design. The nozzle is also provided with a stepped diameter heater cover forming a shoulder to provide a locating feature which may be shifted by machining to adapt a single nozzle configuration to mold plate thicknesses.

REFERENCES:
patent: 3010155 (1961-11-01), Gilmore
patent: 3103039 (1963-09-01), Robinson
patent: 3800027 (1974-03-01), Tsutsumi
patent: 4004871 (1977-01-01), Hardy
patent: 4279582 (1981-02-01), Osuna-Diaz
patent: 4279588 (1981-07-01), Gellert
patent: 4422841 (1983-12-01), Alfonsi et al.
patent: 4450999 (1984-05-01), Gellert

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