Automatic sewing and shearing device of mesh bag machine

The automatic sewing and shearing device comprises a machine body, a sewing machine is installed at the upper end of the machine body, a moving groove is formed in the side wall of the upper end of the machine body and located below the sewing machine, and a moving block is connected into the moving groove in a sliding mode. The upper end of the moving block penetrates through a groove opening of the moving groove, extends upwards and is connected with a moving plate, two first magnetic blocks are symmetrically embedded in the side wall of the upper end of the moving plate, second magnetic blocks are arranged at the upper ends of the first magnetic blocks, and the magnetism of the opposite sides of the first magnetic blocks and the magnetism of the opposite sides of the second magnetic blocks are different. The mesh bag sewing device overcomes the defects in the prior art, a mesh bag is automatically fixed and sewn through mutual cooperation of the sewing machine, the movable plate, the first magnetic block,