| 主权项 |
1. A traveling type immersion treatment apparatus comprising:
a conveying traveling body traveling along an immersion treatment bath, the conveying traveling body having a rotary shaft horizontally crossing above the immersion treatment bath, a rotary shaft drive means rotationally driving the rotary shaft, a workpiece supporting means connected to the rotary shaft, and a workpiece to be treated supported by the workpiece supporting means, whereby the workpiece can be immersed within the immersion treatment bath by rotation of the rotary shaft, the conveying traveling body having a traveling speed variable travel drive means and a traveling speed control device operable to control a traveling speed of the conveying traveling body in response to an angle of rotation of the rotary shaft, the traveling speed control device being operable to perform control such that (i) while the workpiece moves to a 90° rotation position in a forward rolling direction from an upright position horizontally positioned above the rotary shaft, a forward speed of the conveying traveling body is gradually decreased from a reference conveying speed of a reference position on the workpiece located at a fixed distance from an axial center of the rotary shaft, (ii) while the workpiece moves to a 270° rotation position from the 90° rotation position, the forward speed of the conveying traveling body is gradually increased, and (iii) while the workpiece returns to the original upright position from the 270° rotation position, the forward speed of the conveying traveling body is gradually decreased, and a forward rolling locus of the workpiece, assuming that the reference conveying speed is zero, is configured to be a vertically long shape. |
