| 摘要 |
PURPOSE: A shut-off nozzle capable of automatically opening and closing an outlet suing injection force without a lever is provided to elastically and automatically move a poppet according injection pressure a and to selectively exhaust resin. CONSTITUTION: A shut-off nozzle comprises a poppet core(110), a poppet core(120), a nozzle cap(130), and a poppet(140). The poppet core is fixed inside the poppet core. An annular blade unit(121) of the poppet core has a plurality of through passages(122) to make the resin, flowing in the poppet core, flow in the poppet core. An injection hole(132) of the nozzle cap is communicated with the through passage of the poppet core. The nozzle cap is spirally connected in the tip-end part of the body unit. The poppet moves back and forth according to the inside injection pressure of the poppet core in order to selectively open and close the extrusion hole of the nozzle cap.
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