METHOD AND APARATUS FOR MAKING POROUS ARTICLES OF NON-WOVEN WIRE MATERIAL Russian patent published in 2003 - IPC

FIELD: manufacture of porous articles of wire. SUBSTANCE: method comprises steps of preliminarily coiling non-woven wire material to helix; forming tangled blank of said helix; placing it on central rod of press-mold and pressing until predetermined density of wire material; before pressing feeding wire helix by batches into closed inner cavity of press-mold and periodically upsetting formed tangled blank onto extended central rod until complete embracing of said rod by tangled blank and as filling press-mold with predetermined quality of material cutting fed helix. Apparatus for making porous articles of non-woven wire material includes press-mold in the form of central cylindrical rod and concentrically arranged relative to it cylinder and punch. Cylinder has lateral grooves in its upper portion. In lower portion cylinder has cover with central opening for placing cylindrical rod with pointed apex. Punch is provided with collet chuck concentrically arranged inside it. Punch, collet chuck, cover and cylindrical rod are mounted with possibility of separate axial motion. EFFECT: simplified process for making porous articles with use of such method and apparatus. 2 cl, 7 dwg