| 摘要 |
PURPOSE:To comply with the diversification of the quality and the specification condition of a fine lead frame by a method wherein, while a thin-sheet stripe material is being run inside a line, a prescribed shape working and treatment is executed sequentially and continuously to the thin-sheet stripe material. CONSTITUTION:One shape working and treatment line is constituted in such a way that it is provided with a first shape working process group 10, a second shape working process group 11, a heat-treatment process group 12 continued after them, an electrolytic polishing process group 13, a multilayer plating process group 14, 3 tape pasting process group 15 and a third shape working process group and that it is connected via loop formation means 17 to 33 provided with a control device controlling the working and treatment process groups. Then, a thin-sheet stripe material in a vertical state is drawn out to the line, a required shape forming and treatment is executed sequentially on a lead frame while the thin-sheet stripe material is being run inside the line, and the lead frame provided with a prescribed quality and with prescribed specifications is former. |
