초록 ▼

This invention is an improved injection molding nozzle whereby the shut-off plunger is operated by a fluid and the opening of the nozzle is accomplished by the flow of plasticized material through the nozzle. A control rod internal to the nozzle controls the movement of the plunger shut-off member a

This invention is an improved injection molding nozzle whereby the shut-off plunger is operated by a fluid and the opening of the nozzle is accomplished by the flow of plasticized material through the nozzle. A control rod internal to the nozzle controls the movement of the plunger shut-off member and is adjustable so that the amount of plasticized resin flowing through the nozzle can be accurately controlled.

대표청구항 ▼

An apparatus for controlling the flow of plasticized resin through a nozzle assembly comprising: (a) a nozzle tip means attached to a nozzle body means, said body means affixed to a manifold means; (b) passage means internal to said manifold means communication with a bore in said nozzle body means

An apparatus for controlling the flow of plasticized resin through a nozzle assembly comprising: (a) a nozzle tip means attached to a nozzle body means, said body means affixed to a manifold means; (b) passage means internal to said manifold means communication with a bore in said nozzle body means and in communication with bore in said nozzle tip means; (c) plunger means internal to said nozzle assembly in cooperating engagement with said nozzle tip means; (d) a control rod means, having a longitudinal bore therein, coacting with said plunger means and forming a chamber therein; (e) said control rod means adjustably attached to said manifold means for controlling the displacement of said plunger means to vary the flow of plasticized resin; (f) said plunger means is operated to an open position by a force developed by the resin acting on a differential area of said plunger and; (g) said plunger is operated to a closed position by a force developed by fluid pressure in said chamber means.