Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Mold having movable core or movable pin
Patent
1975-11-04
1977-10-04
Husar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Mold having movable core or movable pin
425 4R, 425355, 425412, 425817R, B29F 106
Patent
active
040521370
ABSTRACT:
Each mold in a battery of molds consists of a female die which has a cylindrical mold cavity which is open on both ends. A coaxial end probe or plug is slidable into and out of one end of the cavity and has a duct therein through which plastic material is injected into the cavity. A coaxial center probe or plug is slidable into and out of the other end of the cavity and has a duct therein through which steam is injected into the cavity to heat the plastic therein. A coaxial crush probe or plug with a bore through which the center probe is slidable is itself slidable toward and away from the end of the cavity adjacent the center probe and closes that end of the cavity. A small vent gap is held open between the female die and the crush probe while the plastic beads are being injected into the cavity to allow air to escape from the cavity. The vent gap is closed after the cavity has been filled with plastic beads. After the steam has been applied to the center probe and the exterior of the female die to heat the plastic beads in the cavity, cool water is applied thereto to cool the molded article, which is substantially ejected from the cavity by the end probe.
REFERENCES:
patent: 2420709 (1947-05-01), Kopplin
patent: 2556951 (1951-06-01), Weidner
patent: 2627765 (1953-02-01), Hopkins
patent: 2999273 (1961-09-01), Gronemeyer
patent: 3167811 (1965-02-01), Kraus et al.
patent: 3170010 (1965-02-01), Schultz
patent: 3314105 (1967-04-01), Amsden
patent: 3513507 (1970-05-01), Boulinghouse
patent: 3613165 (1971-10-01), Corey
patent: 3664784 (1972-05-01), Sibley
patent: 3912430 (1975-10-01), Noel
Briggs W. R.
House, Jr. Joseph P.
Husar Francis S.
Kohler General, Inc.
LandOfFree
Core molding machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Core molding machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core molding machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1772438