Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Molding of thermosetting or cross-linking stock
Patent
1980-06-26
1982-01-05
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Molding of thermosetting or cross-linking stock
2643282, 2643287, 2643288, 26432815, 26432816, 425548, 425549, 425572, 425588, B29F 108
Patent
active
043091636
ABSTRACT:
This mould assembly for elastomers is of the type comprising a center block whose temperature is regulated. The block has means for injection of the elastomer into each mould cavity fed with elastomer by a nozzle of the injection device of the press. The center block has projections which are mounted on the block, or are part of the same material as the block, and project from two of opposite sides of the block. Small nozzles for directly injecting the elastomer into the mould cavities are detachably secured on the ends of the projections and adapted to cooperate with adjacent sections of at least two moulds in two or more sections which are disposed on the opposite sides of the center block. Means distinct from those of the block are provided for separately controlling the temperature of the projections and of the small nozzles. Means are provided for controlling the flow through the small nozzles. Means are provided for compensating for the expansion of the block and the moulds. The mould assembly further comprises a special nozzle for feeding elastomer to the block, the temperature of the special nozzle being controllable.
REFERENCES:
patent: 2672653 (1954-03-01), Simpkins
patent: 3591897 (1971-07-01), Perras
patent: 3797984 (1974-03-01), Yago
patent: 4212627 (1980-07-01), Gellert
patent: 4238181 (1980-12-01), Dannels
Pavelko Thomas P.
Societe Lyonnaise de Ventilation Industrielle Solyvent-Ventec
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