| CPC B23D 35/001 (2013.01) [B23D 19/04 (2013.01); B26D 1/0006 (2013.01); B23D 19/06 (2013.01); B26D 2001/0046 (2013.01); B26D 2001/0053 (2013.01); B26D 2001/0066 (2013.01); Y10T 83/783 (2015.04); Y10T 83/9403 (2015.04)] | 12 Claims |
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9. A slitter comprising:
an upper knife disposed above an electrode plate, thereby configured to cut the electrode plate;
a lower knife disposed below the electrode plate to partially overlap the upper knife, thereby configured to cut the electrode plate together with the upper knife,
wherein the upper knife comprises:
a first inner surface extending at an incline from a tip formed at a lowermost end to contact an inner surface of the lower knife;
an outer circumferential surface extending at an incline from the tip to a side opposite the lower knife; and
a support surface,
wherein the incline of the first inner surface has a first angle from a vertical line (V) that is perpendicular to a rotation axis that serves as a rotation center of the upper knife,
wherein the incline of the outer circumferential surface has a second angle from the vertical line,
wherein the upper knife and the lower knife are rotary knives,
wherein an outer surface of the lower knife is planar and a thickness of the lower knife is constant,
wherein the upper knife further comprises a second inner surface extending inward from the first inner surface, and
wherein the second inner surface is inclined at a third angle from the vertical line, the third angle being an acute angle, the second inner surface extending toward an inner side of the upper knife to define a stepped portion with respect to the support surface of the upper knife.
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