Method of making an injection molding nozzle having nose portion

Details Method of making an injection molding nozzle having nose portion Method of making an injection molding nozzle having nose portion

1989-12-05

1990-07-17

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29460, 228214, 425549, 425572, 427103, 219542, 219543, 219544, H05B 300

Patent

active

049412493

ABSTRACT:
An integral sprue gated injection molding nozzle and method having a melt bore extending centrally therethrough wherein a circular forward end portion of the electrical heating element encircles the melt bore in the nose portion to provide additional heat adjacent the gate. The method includes locating the circular portion of the heating element in a circumferential space between a hub member and a funnel member and integrally brazing them together in a vacuum furnace to form the nose portion of the nozzle. The nose portion is drilled and machined to provide the desired gate and configuration depending upon the particular application.

REFERENCES:
patent: 4266723 (1981-05-01), Osuna-Diaz
patent: 4279588 (1981-07-01), Gellert
patent: 4450999 (1984-05-01), Gellert
patent: 4688622 (1987-08-01), Gellert
patent: 4768283 (1988-09-01), Gellert
patent: 4768945 (1988-09-01), Schmidt
patent: 4773154 (1988-09-01), Gellert

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