Apparatus for blow molding glass articles
AssigneeAga AB
InventorsMichael J. Ziegler, F. Richard Simpkins
Life of this patent
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Abstract
An apparatus for blow molding glass articles uses a mixture of cryogenic fluid and ambient air as a blowing fluid. The apparatus includes gas inlet means positioned to direct a flow of blowing fluid into the center of a blow mold, insulated manifold means to mix ambient air and a cryogenic fluid as the blowing fluid, means to feed the mixture into the gas inlet means, means to pressurize the ambient air, conduit means for directing ambient air into the insulated manifold, and injector means for introducing cryogenic vapor into the conduit means.
Claims6
In a hollow glass article manufacturing machine including a mold having a cavity into which a quantity of molten glass is introduced to be conformed to a desired shape as defined by the mold cavity, and having gas inlet means for admitting a flow of blowing gas to the mold cavity interiorally with respect to the hollow glass article being formed in the cavity to directly cool interior surface portions of the molten glass therein for at least assisting in conforming a quantity of molten glass to a desired configuration defined by the mold cavity, the improvement of means for providing a flow of a mixture of pressurized cold cryogen vapor and ambient air for use as a pressurized blowing gas that has a temperature substantially below that of ambient air, and means for supplying the flow of pressurized blowing gas to the gas inlet means, wherein the supply means includes:
- (a) insulated manifold means for containing a supply of said mixture of ambient air and cold cryogen vapor;
- (b) blower means for pressurizing ambient air;
- (c) conduit means for ducting pressurized ambient air from the blower means to the insulated manifold means;
- and,
- (d) cryogen injector means including a plurality of cryogen injectors for introducing cold cryogen vapor into the conduit means at spaced locations.
Dependencies are inferred from the claim text.