APPARATUS FOR JOINING SHEET METAL BANDS

摘要

An apparatus for joining separate sheet metal bands to be passed in succession through a band-treating plant by punching interengaging cuts in overlapping end portions of the bands and comprising band-gripping rollers operative to first position the band end portions to be joined in relation to a transverse series of band cutting and deforming tools, to subsequently stretch the joint in order to effect interlocking engagement of the cuts, and to finally subject the joint to a pressure deforming the edges of the engaged cuts.