| 摘要 |
PURPOSE:To exhaust smoothly air from an air vent groove, and to prevent air from being mixed into a flux by forming the end face of a columnar flux to a convex surface. CONSTITUTION:A shape of a tip surface A1 of a columnar flux 21 of a one lot portion is formed to a convex surface. When painting is started, an interval of the tip surface A1 of the columnar flux which advances by being pressured by a piston 6, and a rear end surface B1 of a residual flux 7 of the previous lot is narrowed gradually. By following it, air existing in this interval is pushed out of an air vent groove 12, and in the end, both the end faces A1, B1 contact partially to each other. Before both the end faces A1, B1 are unified from said time point, the remaining air is all exhausted moderately from the air vent groove 12. Also, even if a speed of the piston 6 is not decreased especially, air is exhausted smoothly enough, therefore, the operation rate of a painting machine does not drop. |
