Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1986-11-04
1988-05-31
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
2643289, 26432815, 425564, 425566, 425568, 425570, B29C 4523
Patent
active
047477709
ABSTRACT:
This invention relates to a multi-cavity valve gated injection molding system wherein a continuous flow of hydraulic fluid through the actuating mechanism provides additional cooling. A pair of hydraulic fluid lines are drilled in the mold back plate to apply a minimum pressure differential across the cylinder chamber on one side of the piston. In the preferred embodiment, this pressure differential is also applied to opposite sides of a circular cooling chamber extending through the cylinder to provide additional cooling near a high pressure seal. Additional cooling is very advantageous to avoid system malfunctions and inferior product, particularly when molding high performance engineering resins at a high temperature.
REFERENCES:
patent: 4268240 (1981-05-01), Rees et al.
patent: 4446360 (1984-05-01), Gellert
patent: 4468191 (1984-08-01), Gellert
patent: 4609138 (1986-09-01), Harrison
Mold-Masters Manual, "Hydraulic Valve Gating Manual", Apr. 1984, pp. 10-12.
Mold-Masters brochure entitled "Master-Shot Nozzles", May 1985.
Heitbrink Timothy W.
Mold-Masters Limited
Woo Jay H.
LandOfFree
Fluid cooled hydraulic actuating mechanism for injection molding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluid cooled hydraulic actuating mechanism for injection molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid cooled hydraulic actuating mechanism for injection molding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1871548