Kneader

The utility model relates to an automatic-control shredder, belonging to office appliance technical field, comprising a shredder main body, a shredder crashing basket, a photoelectric switch equipped on an inlet of the surface of the shredder main body, a magnet switch which is equipped in the main body of the shredder and controls an electronic circuit in the main body, a main shredder knife axle front protective sleeve and a main shredder knife axle back protective sleeve covered on a main shredder knife axle, and a second shredder knife axle front protective sleeve and a second shredder knife axle back protective sleeve covered on a second shredder knife axle. The shredder is operated conveniently and improves the automatic control level and the security greatly via using the structure.