SHEATH PIPE, SHEATH PIPE MANUFACTURING METHOD, AND SHEATH PIPE MANUFACTURING APPARATUS

摘要

A sheath pipe manufacturing apparatus for producing a sheath pipe by spirally winding a band member having a single predetermined width with the edges superposed on each other and by welding the superposed portions, comprising a winding section (20a) having a mandrel (21a) around which a band member (10a) having a single predetermined width is wound, a member supplying section (40a) for supplying the band member while superposing the edges of the band member and spirally winding the band member at a predetermined angle, a rotating section (30a) for rotating the winding section (20a), a welding section (50a) for fusing the superposed portions of the band member wound around the winding section and pressure-welding them to form a pipe, and a member delivering section (60a) for delivering the pipe from the mandrel while pressing the fused and welded portions.