Device for selective soldering of components on a print plate with classical connecting wires includes means to blow oxygen on solder to make sure its flow in correct direction to prevent formation of bridges between connecting wires

摘要

Device for the selective soldering of components on a printed plate (6) provided with classical connecting wires (9). The solder (7) always flows in the correct direction, opposite to the movement of the print plate, in order to prevent formation of bridges between the connecting wires. This is achieved by blowing a gas low in oxygen content against the solder so that the solder is forced to flow in the correct direction. The gas feed can be quickly switched on and off in order to achieve optimal blowing during soldering. In order to force the solder still more to flow in the correct direction, the outflow pipe (4) is made from partly moistenable material and partly non-moistenable material.