Apparatus for forming a large diameter pipe

Details Apparatus for forming a large diameter pipe Apparatus for forming a large diameter pipe

B - Operations, Transporting

21

D

113/51

B21D 51/16 (2006.01) B21C 37/12 (2006.01)

Patent

CA 1053987

APPARATUS FOR FORMING A LARGE DIAMETER PIPE by XAVER LIPP ABSTRACT OF THE DISCLOSURE An apparatus for helically winding a strip of sheet metal into a large diameter pipe and connecting the edges of the strip by preforming and rabbeting. The edge bending for the rabbet is done In a preforming station and a rabbeting station in which the bends are sequentially and increasingly formed with multiple units at each station. Adjacent units are hinged and devices for adjusting the angular relationship between adjacent units are provided, including spacers and adjustable threaded devices. Gears permit driving multiple units at various adjustment angles.

256037

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