| 摘要 |
This invention relates to a method of manufacturing an ignition file for a lighter by a press and a device therefor, more particularly to an improvement of a punching operation of an axial hole for mounting an ignition file. A material pressed into a disk-like configuration is prepared and a concave portion is provided in the approximate center of both sides of the file member. A hole is punched between concave portion having a diameter smaller than that of the concave portion. The fin of the file member caused by punching is absorbed in a gap provided inside the die wall while the fin projecting toward the die hole to be punched is absorbed in said concave portion.
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