Hook nozzle for inside gated mold

Details Hook nozzle for inside gated mold Hook nozzle for inside gated mold

1993-09-07

1995-01-03

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

2643288, 26432815, 425570, 425573, 425577, B29C 4522

Patent

active

053781392

ABSTRACT:
The present invention relates to an improved apparatus for forming injection molded plastic articles having an inner wall portion. The apparatus includes a mold cavity portion and a mold core portion defining a cavity space in the shape of the plastic article to be formed. The apparatus further includes at least two hot runner nozzles for injecting molten plastic material into the cavity space. The nozzles are preferably offset to outer portions of the mold core portion so as to provide an increased space in the mold core portion in which cooling conduits, inlets and the like can be placed to increase the cooling capability of the mold core portion. The offsetting of the nozzles also provides the mold core portion with increased strength. Each of the nozzles communicates with inner wall portion of the cavity space via a hook-shaped passageway and an inside gate. Additionally, each of the nozzles has a metal portion for maintaining plastic material in the hook-shaped passageway in molten condition.

REFERENCES:
patent: 4768945 (1988-09-01), Schmidt et al.
patent: 5145630 (1992-09-01), Schad

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