| 摘要 |
<p>Three tubular sections (7, 6, 8) respectively, are flanged together at complementary surfaces (9, 14; 10, 15) angled relative to all three tube axes (11, 12, 16). Relative rotation is possible about axes (13, 17) normal to the surfaces (9, 14; 10, 15). An end section connects to an extruder. End sections have circular internal cross sections complementary with those of the central section (6). The connectors have cylindrical internal surfaces with axes at right angles to the complementary connecting surfaces. Angles made by connecting surfaces with the longitudinal axes are preferably 10-55degrees. Axes can be aligned mutually-parallel, in a linear arrangement of the assembly. Relative rotation results in angled states of the axes.</p> |
