Rounding apparatus for a can welding machine

Abstract From the Canadian patent

During the rounding of sheet-metal blanks problems have hitherto arisen in the rounding apparatus because the leading edge of the rounded sheet-metal blanks struck against a stationary stop at the end of a slit between an inner shell and an outer shell so that the, sheet-metal blank rebounded and did not have a defined starting position for further conveying. In order to overcome this problem, the stop is constructed in the form of a pivotally movable damping flap on which there is formed a catch hook which closes the slit at its end. Compression springs are disposed between the damping flap and the inner shell. Under the impact of the sheet-metal blank the catch, hook yields and urges the …