Nozzle block, air spinning device and spinning machine

Abstract

In a nozzle block (60), a first space (64), a second space (66), and a third space (67) are aligned from a first side toward a second side in a predetermined direction. The second space (66) is spread at a second inner surface tapered angle from the first side toward the second side. The third space (67) is spread at a third inner surface tapered angle greater than the second inner surface tapered angle from the first side toward the second side. A height (H1) of the first space (64) is a value greater than or equal to 3 mm and smaller than or equal to 8 mm. A height (H2) of the second space (66) is a value greater than or equal to 30% and smaller than or equal to 50% of a sum of the height (H2) and a height (H3) of the third space (67).

Description

technical field

[0001] The invention relates to a nozzle block, an air spinning device and a spinning machine. Background technique

[0002] There is known an air spinning device comprising: a nozzle block for twisting introduced fibers by a swirling air flow, a fiber inlet for introducing the twisted fibers, and a passage for leading out fibers introduced from the fiber inlet to the outside. The hollow guide shaft unit (for example, refer to Japanese Patent Laid-Open No. 2009-001935, Japanese Patent Laid-Open No. 2003-193339).

[0003] In an air-jet spinning device, both ensuring stable winding properties (the degree of twisting of fibers) and improving the spinning speed (yarn production speed) are sometimes required.

[0004] However, in order to achieve the above-mentioned combination, depending on the type of fiber, the tension acting on the yarn may be too high. Contents of the invention

[0005] Therefore, an object of the present invention is to provide a nozzle ...

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