Injection molding nozzle with removable forward member

Details Injection molding nozzle with removable forward member Injection molding nozzle with removable forward member

1992-08-17

1993-12-07

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

26432815, 425192R, 425549, 425570, 425572, B29C 4520

Patent

active

052681840

ABSTRACT:
A heated injection molding nozzle having a rear member and a forward member which is removable. A channel extends through the rear and forward members to convey pressurized melt to one or more gates extending through the mold to a cavity. The rear member has an electrical heating element with a spiral portion which extends around the melt channel. The forward member has a tapered rear portion which extends rearwardly into a matching tapered well in the rear member. The taper is sufficient so the tapered portion is frictionally retained in the well to removably mount the forward member to the rear member. This allows the forward member to be easily turned or driven out of engagement in the well to replace it with a new forward member or a forward member having a different configuration to provide a different type or arrangement of gating.

REFERENCES:
patent: 4652230 (1987-03-01), Osuna-Diaz
patent: 4663811 (1987-05-01), Gellert
patent: 4810184 (1989-03-01), Gellert et al.

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