| 摘要 |
The present invention provides a folding method of a resin pipe, and a manufacturing method of a resin pipe coated roller. The invention aims to restrain resin pipe damage generated in resin pipe folding. The folding method comprises the following steps: an inserting step of inserting the resin pipe into the inner part of a cylindrical mold in a mode that two ends of the resin pipe are projected from two ends of the cylindrical mold; a deforming step of applying a uniform force on the whole circumference in the circumferential direction from the inner part of the resin pipe so that at least axial outside part of the projected part of the resin pipe deforms plastically; and a folding step of causing the inner circumferential surface of the plastically deformed part of the resin pipe to contact with the outer circumferential surface of a cylinder component of which the inner dimeter is larger than the outer diameter of the cylindrical mold, so that the cylinder component moves to the axial center of the cylindrical mold, thereby folding the projected parts of the resin pipe to the outer circumferential surface of the cylindrical mold. |
