Injection molding nozzle with removable collar portion

Details Injection molding nozzle with removable collar portion Injection molding nozzle with removable collar portion

1994-07-22

1995-07-04

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

29611, 26432815, 425570, B29C 4520

Patent

active

054294916

ABSTRACT:
An injection molding nozzle with a hollow inner portion and a separate removable outer collar portion which sits on a seat in the mold. The outer collar portion has two separate semicircular segments which extend around and interlock with the inner portion with sufficient strength to prevent longitudinal movement of the inner portion when sealing pressure is applied. A resilient split retaining ring clamps the two semicircular segments together in the interlocking position. In one embodiment, the nozzle has an integral electrical heating element with lead portions which extend radially outward to a ceramic insulator. The ceramic insulator has an inner end portion which is also secured in place in an opening between the two semicircular segments.

REFERENCES:
patent: 5235737 (1993-08-01), Gellert
patent: 5266023 (1993-11-01), Renwick

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