Gunther Heisskanaltechnik Gmbh

Johannes Petrus Van Lieshout

Herbert Gunther

Herbert Günther

A nozzleused in injection molding comprises at least one runnerwithin a nozzle casingto convey injection material to be processed. At its lower end, the runnercommunicates, in flow-transmitting manner, through a nozzle orifice elementand an insert, with an injection mold cavity constituted by at least one mold insert. The insert preferably is made in powder metallurgy form of a wear-resistant material and is configured in limited longitudinally displaceable manner in the nozzle orificein the lower end of the runner. Said insertfurthermore constitutes a gate aperture. In the embodiment mode of a needle shutoff nozzle, a shutoff needledisplaceable between an open and a closed position passes through the runnerand through the insertwhich constitutes a centering element wherein an intake conecenters the intrinsic sealing elementof the needle. The thermally highly conducting nozzle orifice elementencloses the upper partof the insertand can be screwed from below into the nozzle casing. Alternatively the nozzle orifice elementand the insertare integral and both are inserted as a unit into the nozzle casingto be jointly longitudinally displaceable therein. The insert/centering elementis fitted with a support flangeso that the nozzle orifice elementand/or the insertbe reliably affixed.

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Best, Netherlands

Johannes Petrus Van Lieshout