| 摘要 |
This invention provides a plate assembly to be used with a soldering device for changing screens of circuit boards by soldering. The plate assembly comprises a horizontal bottom plate having a number of cylindrical passages extending therethrough; a number of narrow horizontal top plates having a number of cylindrical passages extending therethrough; a number of pads with a number of cylindrical passages extending therethrough, with each of said number of pads being placed horizontally in between the horizontal bottom plate and one of the number of narrow horizontal top plates such that each of the number of cylindrical passages through the number of narrow horizontal top plates is aligned with one of the number of cylindrical passages in the number of pads and with one of the number of cylindrical passages in the horizontal bottom plate and with one of a number of screws passing through each of the number of aligned cylindrical passages of the number of narrow horizontal top plates, of the number of pads, and of the horizontal bottom plate; a number of fixture pins being erected tightly and vertically in one of the number of cylindrical passages through the horizontal bottom plate while protruding over and above the horizontal bottom plate; and a number of guiding pins erected vertically and tightly in one of the number of cylindrical passages through the horizontal bottom plate while protruding over and above the horizontal bottom plate. The soldering device comprises: a three-dimensional, polygonal heat head having a bottom surface which comes into contact with the screen, a top surface which runs parallel to the bottom surface and which is wider than the bottom surface, said top surface being connected to a shank, a number of cylindrical passages extending from the bottom surface to the top surface through the heat head, a first side wall, a second side wall, a first end wall and a second end wall, said first side wall and said second side wall joining the bottom surface to the top surface of the heat head; and a heating handle which secures said shank of the heat head.
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