An injection nozzle having a heated head portion

An injection nozzle having a heated head portion

  • CN 1,646,292 B
  • Filed: 02/05/2003
  • Issued: 01/25/2012
  • Est. Priority Date: 02/05/2002
  • Status: Active Grant
First Claim
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1. injection nozzle that is used for injection moulding apparatus comprises:

  • Head and main part, said head and main part interconnect, and said head and main part limit nozzle melt channel together,Said head substantial cylindrical;

    And external diameter with substantial constant;

    Wherein said head has the head outer surface;

    In use said head can contact with the injection moulding apparatus parts that are in than under the lower temperature of said head, and said main part has the main part outer surface, in said head outer surface and said main part outer surface, is formed with spiral groove;

    WithBe arranged in the heater of said spiral groove, wherein said heater around the periphery extension of said head and main part heating the melt in the said nozzle melt channel,Wherein, said head and said main part are extended along the longitudinal direction, and the cross section of said head is greater than the cross section of said main part.

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