Patent ID: 8690041

Claim:
A method of soldering a direct insertion process (DIP) component on a circuit board, comprising: piercing the DIP component through the circuit board; laying fluxer on the circuit board; passing a first surface of the circuit board through a boiler so that molten tin from the boiler flows between the DIP component and the circuit board through the first surface of the circuit board; disposing a shelter between a thermal radiation heating device and the circuit board; utilizing a position sensor to detect a position of the circuit board relative to the boiler; utilizing a driving device to rotate the shelter and to move the shelter and the thermal radiation heating device relative to the circuit board according to a detecting result of the position sensor, wherein a rotary speed of the shelter corresponds to a conveying speed of the circuit board so that a hole on the shelter continuously aims at an area on a second surface different from the first surface of the circuit board adjacent to the DIP component; and heating the area on the second surface different from the first surface of the circuit board adjacent to the DIP component through the hole on the shelter continuously by the thermal radiation heating device for increasing a temperature of the second surface when the first surface of the circuit board is passing through the boiler and the molten tin from the boiler is flowing between the DIP component and the circuit board through the first surface of the circuit board, to make the temperature of the second surface of the circuit board be substantially equal to a temperature of the first surface of the circuit board so that the molten tin from the boiler goes deeply into a gap between the DIP component and the circuit board before the molten tin is solidified.