| 摘要 |
PURPOSE:To manufacture a spiral tube with a low-cost device while guiding the spiral tube smoothly without contacting the outer face of tube with any substance by supporting the spiral tube at its end to the guiding wire going through the center of supporting jig and enabling the tube to pivot and move forward. CONSTITUTION:In the process of manufacturing a spiral tube and simultaneously guiding and inserting it into the existing obsolete tube, after installing the tube manufacturing machine 132, the guiding wire (wire rope) 12 is put in the supporting jig 11 through its opening 112 and stretched through the center of the shaft of the existing obsolete tube 14 and the molding opening 133 of the tube manufacturing machine 132. After starting manufacturing of spiral tube 13, the supporting jig 11 is pushed and supported around the inner face of end of the tube. The supporting jig 11 is equipped with the ball bearing 114 installed on the inner circumference of center opening 112. The spiral tube 13 is moved with propelling force created in manufacturing process and travelled forward along the guiding wire 12 to be inserted without contacting the inner face of existing obsolete tube. |
