Abstract: A plurality of baths for dipping and the like is arranged in series so that these baths contact one another, and a conveyor 2 is linearly arranged above the dipping bath in one plane. A workpiece 1 is tact-conveyed on the conveyor 2 in a floor conveyor position. The workpiece 1 is stopped at each bath for dipping and the like, wherein when the workpiece 1 is rotated horizontally about 180° to change its position to an overhead conveyor position, it is immersed in the corresponding bath for dipping and the like for dipping treatment.

Abstract: A carrier 3 that is moveably supported on the side of a conveyor 2 is provided with a rotational shaft 4 projecting laterally therefrom. A workpiece 1 is mounted on the rotational shaft 4 in an upright condition, wherein the workpiece 1 is arranged to vertically rotate 360° in the same plane by rotating the rotational shaft 4 360° around its axis. With this construction, the workpiece position can be continuously changed to a floor conveyor position, an overhead conveyor position and to the floor conveyor position without transfer of the workpiece 1.

Abstract: A carrier 3 that is moveably supported on the side of a conveyor 2 is provided with a rotational shaft 4 projecting laterally therefrom. A workpiece 1 is mounted on the rotational shaft 4 in an upright condition, wherein the workpiece 1 is arranged to vertically rotate 360° in the same plane by rotating the rotational shaft 4 360° around its axis. With this construction, the workpiece position can be continuously changed to a floor conveyor position, an overhead conveyor position and to the floor conveyor position without transfer of the workpiece 1.

Abstract: A carrier 3 that is moveably supported on the side of a conveyor 2 is provided with a rotational shaft 4 projecting laterally therefrom. A workpiece 1 is mounted on the rotational shaft 4 in an upright condition, wherein the workpiece 1 is arranged to vertically rotate 360° in the same plane by rotating the rotational shaft 4 360° around its axis. With this construction, the workpiece position can be continuously changed to a floor conveyor position, an overhead conveyor position and to the floor conveyor position without transfer of the workpiece 1.

Abstract: A workpiece 1 is supported on a conveyor 2 through a carrier 3. A supporting portion of the workpiece 1 is vertically and horizontally rotatable to change its position to a floor conveyor position, an overhead conveyor position, and a side conveyor position. The workpiece 1 is first moved to enter a spray booth 30 in the floor conveyor position ({circle around (1)}) and then vertically rotated to the overhead conveyor position where the bottom portion thereof faces upward. An under-side coating is performed on the lower portion of a car body by a spray apparatus 31 for which the nozzle position is situated lower ({circle around (2)}). The workpiece 1 is then horizontally rotated to the side conveyor position where the left-hand side of the car body faces upward and an L-side coating is performed on the left-hand side of the car body by the same spray apparatus 31 as above ({circle around (3)}).

Abstract: A plurality of baths for dipping and the like is arranged in series so that these baths contact one another, and a conveyor 2 is linearly arranged above the dipping bath in one plane. A workpiece 1 is tact-conveyed on the conveyor 2 in a floor conveyor position. The workpiece 1 is stopped at each bath for dipping and the like, wherein when the workpiece 1 is rotated horizontally about 180° to change its position to an overhead conveyor position, it is immersed in the corresponding bath for dipping and the like for dipping treatment.

Abstract: A carrier 3 that is moveably supported on the side of a conveyor 2 is provided with a rotational shaft 4 projecting laterally therefrom. A workpiece 1 is mounted on the rotational shaft 4 in an upright condition, wherein the workpiece 1 is arranged to vertically rotate 360° in the same plane by rotating the rotational shaft 4 360° around its axis. With this construction, the workpiece position can be continuously changed to a floor conveyor position, an overhead conveyor position and to the floor conveyor position without transfer of the workpiece 1.

Abstract: A workpiece 1 is supported on a conveyor 2 through a carrier 3. A supporting portion of the workpiece 1 is vertically and horizontally rotatable to change its position to a floor conveyor position, an overhead conveyor position, and a side conveyor position. The workpiece 1 is first moved to enter a spray booth 30 in the floor conveyor position ({circle over (1)}) and then vertically rotated to the overhead conveyor position where the bottom portion thereof faces upward. An under-side coating is performed on the lower portion of a car body by a spray apparatus 31 for which the nozzle position is situated lower ({circle over (2)}). The workpiece 1 is then horizontally rotated to the side conveyor position where the left-hand side of the car body faces upward and an L-side coating is performed on the left-hand side of the car body by the same spray apparatus 31 as above ({circle over (3)}).

Abstract: A painting gun having a ring-like gun main body with a circumferential opening formed in one peripheral portion thereof so as to allow for passage of an elongated workpiece as an object to be painted, and a plurality of nozzles radially disposed so as to eject a paint towards a central portion of the gun main body. The painting gun is moved in a longitudinal direction of the elongated workpiece after the elongated workpiece is placed in position inside the painting gun through the circumferential opening. Each of the nozzles atomizes the paint by atomizing air. An amount of the paint to be ejected from each of the nozzles is set to 35 cc/min or less, preferably 20 cc/min or less, per 1 kg/cm.sup.2 of an atomizing air pressure.