| 摘要 |
PURPOSE:To make the instrument compact and to eliminate that welding can not be taken place due to the instrument itself stands in the way by holding a welding torch with the holding body continuing four sheets of plate bodies freely rocking with each other. CONSTITUTION:The torch angle of a welding torch 14 is changed when the 1st plate body 20A and the 2nd plate body 20B are rocked in their widening direction owing to a shaft part 22 and cylinder part 23 being rotated mutually in reverse direction at the same speed on running the motor of a rocking drive device. At this moment the tip of the welding torch 14 is always in a certain position even if the holding body 19 is deformed. In case of changing the front and rear angles of the welding torch 14, the holding member is swivelled by the motor of a swivelling device. |
