Device for cutting electrode foils

A device for cutting a strip-shaped electrode foil into narrower strips, wherein the device comprises:

• a first shaft;
• a second shaft extending parallel to the first shaft;
• a drive configured to set the first shaft and the second shaft in counter-rotation;
• a first pair of first circular blades that is attached to the first shaft in a rotationally fixed manner;
• a second pair of second circular blades that is attached to the second shaft in a rotationally fixed manner;
• and
• an elastic element that:
• comprises an elastomer, a compression spring or a disk spring,
• is arranged between the two first circular blades, and
• exerts a pressure force on the first two circular blades that acts towards the adjacent second circular blades,
• wherein each circular blade has a radially outwardly facing cylindrical outer surface and a flat annulus-shaped side surface that extends perpendicular to the respective axis of rotation and forms a circumferential cutting edge where it adjoins the outer surface,
• wherein the cutting edges of the second circular blades of the second pair face each other and are separated from each other by a circumferential interspace having an axial width,
• wherein the cutting edges of the first circular blades of the first pair face away from each other and engage in the circumferential interspace in such a way that adjacent first and second circular blades cooperate to produce a respective cutting edge in the electrode foil, and
• wherein a non-destructively exchangeable spacer element is arranged between the two second circular blades of the second pair, thereby determining the axial width of the circumferential interspace.