Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1978-04-07
1980-06-24
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
425526, 425533, 425534, 425556, 425404, B29F 114, B29C 1707
Patent
active
042092906
ABSTRACT:
Preforms or parisons to be blow-molded into bottles are produced in cavities of a lower mold half of a vertical injection-molding machine with the aid of respective cores depending into these cavities from an upper mold half when the mold is closed. As the two mold halves separate, the parisons adhere to the respective cores from which they are subsequently discharged into respective nests of a transfer box or respective cells of a blow-molding unit interposed between these mold halves. In the first instance, the parisons are cooled by a circulating air stream while the transfer box is laterally withdrawn before the start of a new injection-molding cycle, the rigidified parisons being then released from their nests to drop into pockets of an underlying conveyor transporting them to a blow-molding station. In the second instance, the cores are hollow and descend with their parisons into the blow-molding cells whose split walls are closed around the cores by fluidic or mechanical means. There the parisons are inflated by air injected through the cores whereupon the finished bottles are extracted from these cells after the blow-molding unit has been laterally withdrawn and while a new injection cycle takes place.
REFERENCES:
patent: 3357045 (1967-12-01), Ninneman
patent: 3364521 (1968-01-01), Valyi
patent: 3408689 (1968-11-01), Heiner
patent: 4136146 (1979-01-01), Ninneman
Rees Herbert
Schad Robert D.
Husky Injection Molding Systems Limited
Ross Karl F.
Silbaugh Jan H.
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