| 摘要 |
A machine for injection molding of plastic articles comprising a rotatable wheel having a plurality of molds mounted along the periphery thereof with spacers mounted therebetween, wherein each mold comprises two opposing sections pivotally attached to each other such that the mold opens radially towards the periphery of the wheel. The periphery of the molds and spacers are machined to a precise radius to collectively form a continuous circle. Each mold comprises a plurality of cavities wherein each cavity communicates with the exterior of the mold along the periphery thereof through an opening formed at the mold parting line. A stationary injection nozzle is machined to precisely conform to the periphery of the circular structure and to ride along the surface thereof as the wheel is rotated. The nozzle comprises at least one port for each of the cavity openings in a single mold, wherein the nozzle is designed to convey pressurized molten plastic from a plastic fusion chamber and inject the molten plastic directly into each of the mold cavities simultaneously through the cavity openings. The temperature of the nozzle is preferably regulated by a thermocouple driven temperature controller so that the plastic can be cooled within the nozzle from the elevated temperatures required for fusion to a temperature adequate for injection. The machine further comprises an automated mold recycling feature which opens each mold, extracts the plastic articles therefrom, and closes the mold for reuse. The extracted articles are collected and processed for shipping.
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