| 摘要 |
A device and a method for controlling welding angle capable of eliminating restrictions produced when a conventional floating type control device is adopted to maximally develop the advantages of the floating type control device by adopting a fin roll supporting mechanism and a fin roll adjusting mechanism in manufacturing a welded tube. When the welding angle is controlled by inserting a fin roll between both edges of band materials facing each other before a squeeze roll, the fin roll is mounted on a link mechanism formed of two arms rotatably connected to each other in a plane formed by the direction of a tube manufacturing line and a direction perpendicular to the direction of the tube manufacturing line, and the positions of the holding points of the arm are changed so that the positions of the fin roll in the plane can be adjusted. Thus, the mechanism of the device can be simplified, a mounting space for the device can be reduced, an environment in which the device is used can be remarkably improved, and a load on the maintenance of the device can be remarkably reduced.
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