PROCESS AND DEVICE FOR REMOVING FLUORINE RESIN LAYER IN XLPE PIPE MOLD DIE

摘要

PURPOSE: A process and device for removing only a fluorine resin layer from the inner circumference of a XLPE(crosslinking polyethylene) pipe mold die without any damage on the inner circumference of the mold die to semi-permanently use the mold die are provided. CONSTITUTION: A device for removing a fluorine resin layer(18) coated on the inner circumference(12) of the injection cavity(14) of a XLPE pipe mold die comprises: a) a rotating member for receiving the mold die(10) and rotating the mold die around the injection cavity as an axis at a selected speed; b) a heating member(50) which is positioned at the same line as the injection cavity of the mold die received in the rotating member and is inserted in the injection cavity to burn the fluorine resin layer; and c) a driving member for reciprocating the rotating member in the direction to the position of the heating member for burning the fluorine resin layer as soon as the heating member is inserted in the injection cavity of the mold die received in the rotating member whereby the heating member burns the fluorine resin layer coated on the inner circumference of the injection cavity of the mold die rotating at a selected speed by the rotating member.