The invention discloses a multi-group blade shredder automatically controlled based on a controller. Including control module, driving device, sliding device, paper inlet, crushing device, debris bin and
alarm device; the control module includes a
microprocessor;
hardness sensors are fixed on the surface of the paper inlet; The device is
cut and crushed, and the crushed paper scraps enter the
scrap bin; the
scrap bin is fixed with a material
level sensor; the control panel is electrically connected to the driving device; the driving device is connected to the sliding device and the crushing device; the crushing device includes several blade groups, the control module and An
alarm device is connected. The present invention cuts and pulverizes different materials by setting multiple groups of blade groups, cooperates with the driving device and the sliding device, selects different blade groups according to the
hardness of the crushed materials, prolongs the service life of the paper shredder, and reduces office costs. The operation of the whole
system is controlled by setting the control module, and paper materials are automatically crushed, which is simple, practical and easy to use.