Method of supplying solder to printed circuit board

摘要

Provided is a solder supply method of supplying, onto a mask sheet, solder to be printed on a printed circuit board. The method includes calculating an amount of solder supplied for a plurality of points in an X direction that is a lengthwise direction of a squeegee, and changing the amount of solder supplied at each point in the X direction based on a result of the calculation.

主权项

1. A solder supply method for a printing apparatus which includes a solder supply nozzle, a mask sheet, and a squeegee extending in an X-direction that is a lengthwise direction thereof such that, under control of a controller, solder is supplied onto the mask sheet via the solder supply nozzle and the squeegee is moved on the mask sheet along a Y-direction perpendicular to the X-direction so that solder is to be printed on a printed circuit board placed underneath the mask sheet, the method comprising:
(A) causing a detection sensor to detect an amount of a remaining solder remaining on the mask sheet for a plurality of points in the X direction of the squeegee after a first process of printing the solder and before a second process of printing the solder, (B) causing the controller to calculate an amount of solder to be supplied on the mask sheet for a plurality of points in the X direction based on a detecting result of the detection sensor; (C) causing the controller to change the amount of solder supplied at each point on the mask sheet in the X direction from the solder supply nozzle based on a result of the calculation, and (D) causing the solder supply nozzle to supply solder with an amount corresponding to a result of the change on the mask sheet for preparation of the second process of printing the solder.