| 摘要 |
PURPOSE:To contrive an improvement of efficiency in a marking operation by providing a seam sensor, a position adjusting mechanism for holding the seam sensor at the prescribed position from the outer surface of an electro-unite tube, and a controlling apparatus giving a profiling instruction to a driving apparatus based on an information from the seam sensor. CONSTITUTION:A center O1 of a circular cross section of an electro-unite tube 1 and a center O2 of an arc of a sector 8 are coincided each other by the displacement of a frame 10 in a direction of an arrow D or D' with a handle 12 being rotated. A frame 6 is displaced in a direction of an arrow G or G' with a handle 17 being rotated so as to maintain the distance H from an outside surface B of the electro-unite tube 1 to a seam sensor 20 constant. Then, a position of a seam section S is detected by the seam sensor 20 with an elevation mechanism 5 being lowered with the electro-unite tube 1 is advanced into the titled apparatus. This detection signal is transmitted to a control apparatus and a frame 19 is displaced in a direction of an arrow F or F' being driven by a driving apparatus 9. And marking is made by a marker 2 of a marker head 3 in a prescribed position of the seam section S. |
