Injection molding nozzle with two removable inserts

Details Injection molding nozzle with two removable inserts Injection molding nozzle with two removable inserts

1994-06-06

1995-06-06

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

26432815, 425570, 425572, B29C 4520

Patent

active

054217164

ABSTRACT:
An injection molding nozzle seal around the gate which bridges the insulative air space between the front end of the heated nozzle and the cooled mold. The nozzle seal is provided by two removable inserts mounted in alignment with the central melt bore through the nozzle to convey the melt therethrough forwardly to the gate leading to the cavity. The first insert is screwed into a threaded seat in the front end of the nozzle and the second insert is screwed onto the first insert. The inserts each have a hexagonal portion for engagement by a wrench. Both of the engagement portions extend in the air space around the nozzle which facilitates removal of the inserts for cleaning or replacement without disassembling the mold.

REFERENCES:
patent: 4793795 (1988-12-01), Schmidt et al.
patent: 5028227 (1991-07-01), Gellert
patent: 5282735 (1994-02-01), Gellert
patent: 5284436 (1994-02-01), Gellert
patent: 5299928 (1994-04-01), Gellert

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