| 摘要 |
PURPOSE:To heat adequately parts having a different heat capacity by providing in series a soldering unit for parts having a large heat capacity, and a unit for parts having a small heat capacity. CONSTITUTION:The first gaseous phase type soldering unit 23 for on-board parts having a large heat capacity is provided with the first cream solder feed ing unit 21 and the first parts feeding unit 22. Also, on the downstream side of this unit 21, the second unit 26 for on-board parts having a small heat capac ity, of the same constitution is placed in series. Accordingly, a sufficient heating time is secured for large parts, and also, an excessive heating can be prevented as for small parts. In this regard, it does not occur that which has been solidi fied by the unit 23 is remelted by the unit 26. |
