| 摘要 |
The method for manufacturing turbulators predisposed to be used in heat-exchanger or similar devices provides to prearrange a first twisting head (11) and a second twisting head (21) along a working direction (A) in a position coaxial according to a longitudinal axis (A1), to feed a portion of elongated shape material (100), for example wire or band, unwinding from a feed device (2) towards a load device (3); to feed said portion of said elongated shape material by means of a feed device (2) carrying auxiliary unwinding means (24) to arrange said fed portion (101, 102, 103) of filiform material in U-shape; to lock one end of the portion of material (100) to the first twisting head (11), and an opposite part of the portion of material (100) to the second twisting head (21). Subsequently, a relative rotation motion is operated between the first twisting head (11) and the second twisting head (21) according to the longitudinal axis (B1) and then the portion of material (100) so twisted is extracted. |
