| 摘要 |
PURPOSE:To eliminate occurrence of an off-spec product and facilitate manufacture of the device, in a process that presses a wire net by an annular wire net pressing member and draws by a tapered drawing punch, by specifying the structure of the wire net pressing member. CONSTITUTION:A vertically movable annular wire net edge pressing member 2 energized downward by force of a spring is put on the middle part of the height of a tapered drawing punch 1. The member 2 is relatively thick, and has a flat pressing face 3 on its lower side, and attached to a plte 8 with four suspending rods 4 having springs 6 put on lower half of them. A flat wire net 19 is placed on a tapered drawing die 13, and the punch 1 is lowered and whole peripheral part of the net 19 is held by the face 3 of the member 2 and a flat pressing face 14 on the peripheral part of the die 13. Under this condition, the punch 1 is further lowered, and the net 19 is pressed strongly by force of the springs 6, and at the same time, central part of the net is deeply drawn. By this way, a tapered product 20 having no folding deffect can be obtained. |
