| 摘要 |
PURPOSE:To make a temp. distribution on the printed board in reflow furnace uniform by recording a position different in a temp. rise on the printed board and executing an auxiliary blowing of the prescribed temp. to the position. CONSTITUTION:The printed board 2 with parts installed is charged in the reflow device 1. When the printed board proceeds to preheating part, the blowing hole 7 for auxiliary blowing is positioned to the position, which is inputted beforehand and has a slow temp. rise on the printed board, by the SX axis control means 11 and SY axis control means 12. The SX axis control means 11 makes the blowing hole 7 move in conformity with the transfer speed of the transfer conveyer 3. The auxiliary heating is always executed to the position of a slow temp. rise of the printed board 2. |
