| 摘要 |
PURPOSE:To improve the productivity of a product by forming a multiple hole drawing plate by shifting a punch and a die of the upper and lower dies provided with a drawing piercing punch and a die, by a half pitch each, and subsequently, manufacturing a container by using this multiple hole drawing plate. CONSTITUTION:A drawing hole punch 4 and a drawing hole die 5 are provided in checkboard pattern, on the upper die 1, and also, a drawing hole punch 4' and a drawing hole die 5' are installed in the same way, on the lower die 2. As for the upper die 1 and the lower die 2, the punch 4' and the die 5' are installed by shifting them by a half pitch each against the punch 4 and the die 5, and a multiple hole drawing plate 3 provided with a flange 6 is formed by placing a plate between both the dies 1, 2 and applying a press pressure. Subsequently, stamping is executed and a multiple hole drawing container is obtained. According to this method, the multiple hole drawing container is obtained easily and at a low cost, therefore, its productivity is improved.
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