| 摘要 |
PURPOSE: To obtain an extrusion mold, on the slidingly contacting surfaces of a rotating core and of a stationary core of which no plucking or the like develops and in which smooth rotation of the core is realized and which can easily be assembled, by a method wherein recessed parts, in which lubricant is filled, are formed on at least either one between the edge face of the stationary core and that of the rotating core, both of which come into slidingly contact with each other. CONSTITUTION: The mold 1 is equipped with a stationary land 2, a stationary core 3, a rotating core 4, a rotating shaft 5 and an adaptor ring 6. On the edge face 32 of the stationary core 3, eight stripes of nearly triangular filling recessed parts opened to the rotating shaft 5 side are provided radially about the rotating shaft 5. Further, on the edge face 42 on the stationary core 3 side of the rotating core 4, eight stripes of nearly triangular filling recessed parts opened to the rotating shaft 5 side are provided radially about the rotating shaft 5. Furthermore, lubricant is filled in these filling recessed parts. The lubricant filled in the recessed part is sealed by O-rings 14 and 15 so as not to leak out of the recessed part. |
