Injection molding apparatus with angled tip probe

Details Injection molding apparatus with angled tip probe Injection molding apparatus with angled tip probe

1991-11-27

1992-06-02

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

26432814, 26432815, 425549, B29C 4520

Patent

active

051182793

ABSTRACT:
Injection molding apparatus wherein a heated probe extends into a well in a cavity plate having a generally spherical forward end. The forward end of the heated probe has at least one conical tip which extends outwardly at an angle into a conical recess leading to the gate. Each conical recess has an included angle of at least 90.degree. and the conical recess and conical tip extend outward along the same central axis at an angle to the longitudinal axis of the probe. This allows the tip to extend fully into the recess without intefering with withdrawal for cleaning or repair. The included angle of the conical tip is substantially less than the included angle of the conical recess which gradually accelerates the flow of melt as it approaches the gate.

REFERENCES:
patent: 4682944 (1987-07-01), Muller
patent: 4768945 (1988-09-01), Schmidt et al.
patent: 4820147 (1989-04-01), Gellert
Mold Masters, Injection molding with compact master shot single nozzle hot runners, Nov. 1990.

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