| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injection nozzle of a rubber injection molding machine, wherein a rubber material is allowed to efficiently generate heat when passing the injection nozzle, so that the temperature of the rubber material to be injected into a mold can be made higher than before and an injection molding cycle time can be shortened and the calorific value of the rubber material or the extent of raising temperature thereof can be controlled easily as needed. Ž<P>SOLUTION: The injection nozzle 30 of the injection molding machine for injecting the rubber material packed in an injection chamber of an injection cylinder 24 into the mold is composed of: a nozzle body 36 having a nozzle orifice 48 at the tip thereof; and a friction heat generator 38 which is arranged separately from the nozzle body 36, is inserted fittingly into a recessed portion 44 of the nozzle body 36 and has a porous structure having many pores 52. The rubber material is made to pass through many pores 52 to the axial direction to generate frictional heat, further made to pass through the nozzle orifice 48 to generate heat and supplied to the mold. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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