Driver for a Twin Cutting Device with Counter Rotating Blades

A driver for a twin cutting device (2), which comprises a first blade (4), which is non-rotatably arranged on a drive shaft (11) to be rotated about an axis of rotation (r) in a first direction, a second blade (3), which is non-rotatably arranged on a drive socket (15), which encloses the drive shaft (11), to be rotated about the same axis of rotation (r) in a second direction opposite to said first direction, the two blades (3, 4) extending parallel to and close to each other, and a drive motor (5) which is arranged to drive both the drive shaft (11) and the drive socket (15), characterised in that the drive shaft (11) constitutes a driving central shaft in a gear (10), and that said gear (10) comprises a sun wheel (24), which is non-rotatably arranged on the drive shaft (11) to be rotated by the same, at least a first planet wheel (25), which meshes with the sun wheel (24) and is rotatable about an axis (p) parallel to the axis of rotation (r), at least a second planet wheel (29), which is arranged to rotate simultaneously with the first planet wheel (25) about the same axis (p), and a gear rim (30), which with internal teeth meshes with the second planet wheel (29) and is non-rotatably mounted on the drive socket (15) to rotate the same.