Cooling arrangement for centering device and spline shaft

Details Cooling arrangement for centering device and spline shaft Cooling arrangement for centering device and spline shaft

2007-04-02

2009-06-16

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

C425S572000, C425S588000

Reexamination Certificate

active

07547207

ABSTRACT:
A cooling arrangement is provided for a mold centering device for multi-level stack molds having a spline shaft with a central region journaled to an intermediate mold level with involute spline pathways extending in oppositely twisting helices from the central region toward opposite ends thereof and respective spline nuts secured to adjacent mold levels threadedly engaging the spline pathways to run therealong for converting linear motion into rotational motion and vice versa thereby controlling relative opening and closing rates of the adjacent mold levels relative to the intermediate mold levels therebetween. The cooling arrangement has an internal fluid passageway extending along the spline shaft into a region of the spline shaft received in the spline nuts. A fluid inlet communicates with and supplies fluid to the fluid passageway. A fluid outlet communicates with and discharges fluid from the fluid passageway. A fluid guide is provided for causing a fluid to flow along the fluid passageway to cool the region received in the spline nuts as the fluid passes from the inlet through the outlet.

REFERENCES:
patent: 5707666 (1998-01-01), DiSimone et al.
patent: 5908597 (1999-06-01), Boudreau et al.
patent: 5910327 (1999-06-01), Schad et al.
patent: 6089852 (2000-07-01), Lee et al.
patent: 6575731 (2003-06-01), Olaru et al.
patent: 6852265 (2005-02-01), Olaru et al.

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