| 摘要 |
<p>PURPOSE: To form lined tubes having various diameters and cross sections by providing a press roller following the cross-sectional shape of the end section of a shield while the roller is arranged on a wound lining cage and a correction roller 21 which is formed in an arbitrary longly elongated shape and follows the cross-sectional shape in the end section of the shield. CONSTITUTION: A press roller 18 is supported by a movable supporting section 19 and pressed against the internal surface of the end section 16 of a shield by means of a spring 20 so that the roller 18 may follow the cross-section shape of the end section 16. In addition, a correction roller 21 expands the diameter of a wound lined tube 22 formed of a wound lining belt 13 by means of its inclined position and following property through the supporting section 19 and spring 20 and brings the tube 22 into contact with a barrel 5 to be reconstructed. After the tube 22 is protruded from the end section 16, consequently, the tube 22 is expanded to a desired shape by means of the correction roller 21. Therefore, lined tubes having circular and oval cross sections can be created.</p> |
