Automatic cutting device used before melting of scrap iron in kiln

The invention relates to the technical field of scrap iron cutting, in particular to an automatic cutting device used before melting of a scrap iron kiln. Rotating plates on the left side and the right side in a dispersing barrel alternately rotate, and the rotating plates drive swing teeth to scatter scrap iron which is cut off by a slitting assembly and falls down to the dispersing barrel in the rotating process; according to the scrap iron recycling device, the cleaning barrel is arranged, so that a stirring shaft and a stirring blade in the cleaning barrel can clean soil and impurities on scrap iron, and the situation that the purity of smelted scrap iron is low due to the impurities contained in the recycled scrap iron, and when the scrap iron falls down after passing through swing teeth, part of scattered scrap iron and unscattered scrap iron blocks are clamped on a stop block column, and the scrap iron is damaged is avoided. And then the sliding seats on the two sides drive the shifting rods to extrude