Importance

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Abstract

Provided is a roller cutter for a shredder having sufficient strength obtained by using a reduced amount of a metallic material. A roller cutter for a shredder is provided with a rotary shaft rotationally driven by a drive mechanism, finely cutting blades each including disks joined together on inside surfaces thereof, the finely cutting blades being successively mounted on and supported by the rotary shaft with the angular phase of each of the blades displaced by a predetermined angle from each other, and shaft fixation members which are fixed to the rotary shaft to thereby fix the finely cutting blades to the rotary shaft under conditions where the members have been mounted at both ends of the finely cutting blades. In this roller cutter, the finely cutting blades have folded parts forming thick-walled portions which go into contact with each other, the folded parts being formed by folding inward the sheet metal material used for forming the disks.

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First Claim