Injection molding cooling core having spiral grooves

Details Injection molding cooling core having spiral grooves Injection molding cooling core having spiral grooves

1998-12-22

2000-06-27

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

060799722

ABSTRACT:
Injection molding apparatus with each elongated cooled mold core (10) having a hollow elongated inner part (78) inside a hollow elongated outer part (80) and an integral dome shaped front cap (132). The outer surface (120) of the inner part (78) and the inner surface (126) of the outer part (80) each having cooling fluid conveying grooves (122, 128) which spiral in opposite direction. This provides very uniform cooling and forces the cooling fluid flow through the grooves (122, 128) to be very turbulent which increases cooling efficiency. It also gives the mold cores (10) additional structural strength to withstand higher injection pressures.

REFERENCES:
patent: 4054630 (1977-10-01), Wang
patent: 4622001 (1986-11-01), Bright et al.
patent: 4759708 (1988-07-01), Hestehave et al.
patent: 5094603 (1992-03-01), Gellert
patent: 5498150 (1996-03-01), Check
Mold-Masters Brochure entitled "Introducing Master-Stack Closure Molding Components" no date.

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