Multiaxis rotational molding method and apparatus
OwnerLeRoy Payneinventor
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OwnerLeRoy Payneinventor
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A method of continuously forming integrally molded structures includes the steps of rotating a plurality of independently movable multisection mold assemblies about a plurality of axes, successively flowing a plurality of polymerizable mixtures over surfaces of each enclosed mold cavity while selectively heating mold sections thereof in a preselected heating profile and monitoring the flowing of each mixture, the heating of the mold sections and the formation of resins therefrom. The monitored mixture flowing, the mold section heating and the formation of each resin are coordinated with each monitored axis rotation. The molded structure is removed after it has achieved structural integrity within the mold cavity, and the steps are repeated to form a multiplicity of the integrally molded structures on a continuing basis. Also, multiaxis molding apparatus for conducting the above method.
A method of continuously forming integrally molded structures in a multiaxis rotational molding operation including the steps of rotating a plurality of independently movable multisection mold assemblies about a plurality of axes, supplying a first freshly formed polymerizable mixture to a first mold assembly, flowing said first polymerizable mixture over surfaces of a first enclosed mold cavity within said first mold assembly while selectively heating at least one of said mold sections of said first mold assembly in a preselected heating profile, monitoring said flowing of said first mixture over said first mold cavity surfaces, said heating of said mold section and formation of a first resin therefrom, supplying said first freshly formed polymerizable mixture to a second mold assembly, flowing said first polymerizable mixture over surfaces of a second enclosed mold cavity within said second mold assembly while selectively heating at least one of said mold sections of said second mold assembly in a preselected heating profile, simultaneously therewith supplying a freshly formed second polymerizable mixture to said first mold assembly, flowing said second polymerizable mixture over said first resin within said first mold cavity while selectively heating at least one of said mold sections of said first mold assembly in a preselected heating profile, monitoring said flowing of said first and second polymerizable mixtures within said first and second mold cavities, said heating of said mold sections and formation of first and second resins therefrom, supplying said first polymerizable mixture to a third mold assembly, flowing said first polymerizable mixture over surfaces of a third enclosed mold cavity within said third mold assembly while selectively heating at least one of said mold sections of said third mold assembly in a preselected heating profile, simultaneously therewith supplying said second polymerizable mixture to said second mold assembly, flowing said second polymerizable mixture over said first resin within said second mold cavity while selectively heating at least one of said mold sections of said second mold assembly in a preselected heating profile, monitoring said flowing of said first and second polymerizable mixtures within said second and third mold cavities, said heating of said mold sections of said second and third mold cavitys and formation of first and second resins therefrom, continuing said supplying of said first and second polymerizable mixtures to succeeding mold assemblies and the flowing of the mixtures into the respective mold cavities while selectively heating said mold sections until all of the mold assemblies have received said mixtures, monitoring said flowing of said mixtures, said heating of said mold sections and formation of resins therefrom, continuing said rotation of said mold assemblies throughout said steps of said continuous molding operation while monitoring individually each axis rotation of said mold assemblies, and coordinating said monitored flowing of each mixture, said monitored mold section heating and said monitored formation of each resin with each monitored axis rotation in a preselected profile to form said integrally molded structures of said first and second resins, separating said mold sections of each mold assembly after said integrally molded structure therein has achieved structural integrity within said mold cavity, removing said integrally molded structure from said separated mold sections and repeating said steps to form a multiplicity of said integrally molded structures of said first and second resins on a continuing basis.
Multiaxis rotational molding apparatus including a support portion, a molding portion and a control portion;
Dependencies are inferred from the claim text.