EXPANDED GRATING FABRICATION DEVICE

摘要

Provided is an expanded grating fabrication device whereby bending or twisting in an expanded grating is eliminated between an expansion working process of a lead strip which is primarily constituted of lead and the punching of lobe parts thereof and it is possible to convey the expanded grating in a flat state to the lobe part punch. An expanded grating fabrication device comprises: an expansion working means for expansion working a lead strip and forming a grating pattern thereupon; a lobe part punch means for forming lobe parts of the worked expanded grating by punching thereupon; a conveyance direction changing roll which is disposed part way through the conveyance path for the expanded grating from the expansion working means to the lobe part punch means; and a pair of vertically arranged flattening rolls which are disposed further downstream than this conveyance direction changing roll and pass the expanded grating. The conveyance direction changing roll further has either a maximum diameter in the axial central part of the roll or a maximum diameter in locations which are intermediate locations from the axial central part toward both end parts and which are equidistant from the central part. The surfaces of the pair of vertically arranged flattening rolls are both made of a resin.