| 摘要 |
A device for positioning a number of working implements, for example spray nozzles, to certain working or treatment points on a car body as the latter is supported by an overhead conveyor for travel between different working and assembly stations on a production line. The device comprises a vertically movable base structure (10, 11) and a working implement carrying frame (18) movably supported on the base structure (10, 11). Hydraulic jacks (12) on the base structure (10, 11) are arranged to accomplish a vertical parallel movement of the frame (18) up toward the underside of the car body until one of four contact sensors (22) indicates contact with the latter. A final vertical adjustment of the frame (18) is accomplished by four vertical cylinders (13) which raise the frame (18) in a non-parallel movement until at least three of the four contact sensors (22) indicate contact with the car body. The docking of the frame (18) to the car body is completed by activating two expandable dowels (23, 24) which are introduced into openings in the car body bottom shell. Thereby, the frame (18) is arrested relative to the car body and the spray nozzles (20) are activated to perform the intended treatment of the car body. |
