Female die for punching steel meshes

The female die comprises a protective sleeve (1), a left insert (2), a middle insert (3) and a right insert (4), a rectangular groove (5) is formed in the protective sleeve (1), a circular bead (6) isformed in the bottom surface of the rear side wall of the protective sleeve (1), and the left insert (3) and the right insert (4) are sequentially embedded in the rectangular groove (5) and located between the left and the right side wall. A shoulder (6) of the sheath (1) is pressed on the top surface of the boss (7); grooves I (8) are formed in the left end face and the right end face of the middle insert (3) and located in the lower end portion of the middle insert (3), a row of semicircular holes I (9) are formed in the top surface of the middle insert (3) and located in the two sides of the middle insert (3), and the semicircular holes I (9) are communicated with the grooves I (8). The punching die has the advantages that the structure is compact, small holes with the diameter of 0.2mm can be punched, and the