AIR-JET TYPE SPINNING DEVICE

• Main Authors: GIUDICI, Carlo, D'AGNOLO, Fabio, NICODEMO, Ruggero
• Format: Patent
• Language: English; French; German
• Published: 24.03.2021
• Subjects: NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; SPINNING OR TWISTING; TEXTILES

An air-jet type spinning device (4) comprising a body (8) at least partially hollow that delimits a spinning chamber (12), a fiber feeding device (16) facing said spinning chamber (12)) to feed the fibers into the spinning chamber (12), a spinning spindle (20) at least partially inserted into the spinning chamber (12) and provided with a spinning channel (24) for the transit of yarn obtained from said fibers, the spinning channel (24) having a main axis defining a spinning direction (X-X) and having a front input (28) for introducing the fibers into said spinning channel (24). Advantageously, the body (8) comprises at least one upper crown of holes (32) comprising at least two upper injection holes (36) which input an upper flow rate of air in the spinning chamber (12). Furthermore, the body (8) comprises at least one lower crown of holes (40) comprising at least two lower injection holes (44) which input a lower air flow into the spinning chamber (12), wherein said crowns of upper and lower holes (32,40) are fluidically connected to distinct air supplies. The upper injection holes (36) extend into the spinner chamber (12) at a first point (48) upstream of the front input (28), with respect to a direction of advancement (F) of the yarn in the spinning channel (24), wherein the lower injection holes (44) extend into the spinning chamber (12) at a second point (56) downstream of the front input (28), with respect to a direction of advancement (F) of the yarn in the spinning channel (24).