| 摘要 |
<p>Apparatus for positioning and guiding the opposed edges of sheet metal so that the edges thereof are progressively moved into substantially intimate relationship with one another so that such edges may be subsequently welded to form a seam. The apparatus includes three replaceable elements (24, 25 and 26) that cooperatively form opposed and relatively converging guide channels (46 and 47) which progressively direct the edges of the sheet metal (14) into intimate relationship and maintain such relationship as the sheet metal is introduced into a seam welder (15). The upper and lower guide elements (25 and 26) may be provided with nose portions (62 and 63) which extend outwardly from the discharge end (20) of the central replaceable guide element (24) to a point contiguous to the welder (15). Another object is to provide a method of seam welding opposed edges of sheet metal (14) by constantly urging the edges which are in overlapped relationship into substantially abutting relationship and thereafter welding at a seam welder (15).</p> |
