Patent ID: 6115911
Filing Date: 2000-09-12
Classification: H05K,Y10T

Abstract:
A method of manufacturing a plug, used in a printed circuit board, comprising the steps of:providing a sealed printing chamber having at least a baseplate mounted on a bottom surface and a transparent window mounted in the top surface of the sealed printing chamber;sequentially mounting the printed circuit board and a stencil on the baseplate, wherein the print circuit board and the stencil each have a plurality of holes formed thereon;using an alignment unit to align the holes of the printed circuit board and the holes of the stencil, wherein the alignment unit is mounted outside the transparent window and the alignment unit includes a plurality of cameras;placing a preheated paste on the stencil;adjusting the sealed printing chamber to a first pressure to perform a paste-printing step for filling the holes of the printed circuit board with paste;adjusting the sealed printing chamber to a second pressure; andadjusting the sealed printing chamber to a third pressure to perform a scraping step to remove redundant paste.