Device for cutting sprue of parison with bottom
OwnerKatashi Aokiinventor
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Abstract
A device for cutting off a sprue of a parison with a bottom is capable of cutting off the sprue in a heating furnace. Cutter plates for cutting the sprue and an outlet for discharging the cut sprue are disposed at the bottom of the heating furnace. Cutting off the sprue may thus be performed without changing the usual molding cycle of the hot parison molding method. The device may alternatively be applied to the cold parison molding method.
Claims5
Apparatus comprising means defining a heating furnace having a closed cylindrical side wall and a bottom wall, said heating furnace having an open top dimensioned to receive an injection molded parison having a sprue at its lower end and said bottom wall containing a centrally positioned opening for receiving said sprue when the parison is positioned within the furnace, a pair of shears positiond adjacent the bottom opening movable transversely of the bottom opening in parallel relation thereto, said shears comprising face-to-face flat plates containing orifices which, when aligned, are concentric with the bottom opening and wherein the orifices are of a diameter to receive said sprue and define opposite cutting edges movable in shearing relation to each other by reciprocation and power operable means for effecting reciprocation of the blades.
Dependencies are inferred from the claim text.