| 摘要 |
PURPOSE:To ensure the accurate butting for thin plates and to obtain a good welding bead, by detecting the pressure immediately before the butting of the cut end faces of steel plates prior to the welding and controlling the butting termination. CONSTITUTION:Steel plates 5 and 6 are previously centered and clamped by clamps 1 and 2 of the input and output sides, and the end parts of the plates 5 and 6 are cut by upper and lower blades 3 and 4. Then the blades 3 and 4 are shunted, and the input side clamp 1 is advanced by a cylinder 20. As a result, an arm 10 touches a pressure detector 11 to stop the movment of the clamp 1. Then a lining metal 8 is moved up to support the end parts of the plate 5 and 6 from the lower side, and the pressure of the cylinder 20 is detected by the detector 11. After this, a motor 19 is turned to shift a stopper 12 toward the butting direction. Thus the cut end faces of the plates 5 and 6 touch with each other to lower the detected pressure. After detecting this drop of pressure, the motor 19 stops its rotation. Then a TIG torch is moved in the plate width direction to perform the welding. |
