Straight down type voice diaphragm punching die
A punching die, straight drop technology, applied in the field of punching die, can solve the problems of low sound film efficiency, long operation time and many processes.
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[0015] Such as image 3 and Figure 4 As shown, the straight-fall sound film punching die of the present invention includes a corresponding upper knife edge 1 and a lower knife edge 3, and the lower knife edge 3 is an annular cylinder with a hollow interior. The upper end of the lower knife edge 3 is provided with a sound film 2 to be punched, and the edge of the sound film 2 to be punched is folded inward along the vertical direction to form a positioning ring 6 that fits the outer contour of the lower knife edge. The working principle of the present invention is as follows: because the positioning ring 6 in the vertical direction of the sound film 2 to be punched fits the outer contour of the lower knife edge 3, the sound film 2 to be punched can be directly placed on the lower knife edge of the annular cylinder The upper end of 3 is fixed; start the upper knife edge 1 to punch downward, and the punched sound film can drop directly from the hollow part of the lower knife ed...
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