| 摘要 |
IN THE CANADA PATENT /A TRADEMARK OFFICE PATENT APPLICATION entitled: Die device for forming tube from a metal band in the name of: Christian SHAHUM This invention relates to a die device for forming tube from a metal band, wherein it comprises a long die block comprising, lengthwise and passing right through it, a conduit comprising an inlet orifice of larger section and an outlet orifice of smaller section and of which the generatrices converge from the inlet orifice towards the outlet orifice and, at the level of the inlet orifice, the conduit is of width slightly greater than that of said metal band, and wherein the die block is removably mounted on a carriage movable horizontally in front of a horizontal mandrel driven in rotation by drive means and about which mandrel is wound the tube, issuing from the die block, substantially perpendicularly to that face of the block where the outlet orifice of the conduit opens out, which carriage is mounted to pivot about a horizontal axis parallel to the mandrel and comprises means for positioning it in inclination, so that the tube issuing from the die block is tangential to said mandrel. |
