| 摘要 |
PURPOSE:To prevent deformation of a tube that may be easily generated when with respect to a two-layer material consisting of a relatively soft tube and a circular, continuous-length core, such as a metal tube, covered with the tube, the core is drawn out of the two-layer material. CONSTITUTION:In a device with a core drawing die 3 wherein with respect to a two-layer material consisting of a relatively soft tube 1 and a circular, continuous-length core 2, such as a metal tube, covered with the tube, using the die 3 having a space part allowing only the core to pass through, the tube is blocked with a thick-wall part of the die, and only the core is passed through the space part of the die to be drawn out, a hard sheathing body 4 for covering the outer peripheral surface of the tube of the two-layer material is so provided that the end thereof is abutted against the die 3. |
