Injection molding apparatus having a cooling core with a ribbed

Details Injection molding apparatus having a cooling core with a ribbed Injection molding apparatus having a cooling core with a ribbed

1998-12-22

2000-06-20

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

26432816, B29C 4573

Patent

active

060770678

ABSTRACT:
Injection molding apparatus with each elongated cooled mold core (10) having a number of cooling fluid bores (118) or grooves (134) extending around a central cooling fluid duct (104). An integral dome shaped front cap (76) encloses the open front end (78). The inner surface (130) of the dome shaped cap (76) has curved ribs (132) which form curved cooling fluid grooves (134) aligned with the cooling fluid bores (118) or grooves (134). The curved ribs (132) give the dome shaped front cap (76) more strength which allows it to be thinner with the curved cooling fluid grooves (134) being closer to the cavity (66) to improve cooling efficiency.

REFERENCES:
patent: 4634366 (1987-01-01), Brun et al.
patent: 5094603 (1992-03-01), Gellert
patent: 5498150 (1996-03-01), Check
patent: 5582788 (1996-12-01), Collette et al.
Mold-Masters Brochure entitled "Introducing Master-Stack Closure Molding Components"--No Date.

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