The invention relates to a sliver receiving device for supplying a sliver coming from a drafting system to a yarn-forming element of a spinning device, an air jet spinning device and a method for forming a sliver receiving device for supplying a sliver coming from a drafting device to a yarn-forming element of a spinning device. The sliver receiving device according to the invention comprises a main body having an inlet opening for receiving the sliver supplied from the drafting system, and a sliver guide device arranged behind the inlet opening for the defined supplying of the sliver to the yarn-forming element.

The invention relates to a sliver receiving device for supplying a sliver coming from a drafting system to a yarn-forming element of a spinning device, an air jet spinning device and a method for forming a sliver receiving device for supplying a sliver coming from a drafting device to a yarn-forming element of a spinning device. The sliver receiving device according to the invention comprises a main body having an inlet opening for receiving the sliver supplied from the drafting system, and a sliver guide device arranged behind the inlet opening for the defined supplying of the sliver to the yarn-forming element.

Method for cleaning an air jet spinning device of a spinning station, an air jet spinning device and a thread-forming unit for an air jet spinning device. The air jet spinning device has a thread-forming unit having a thread-forming element arranged in a vortex chamber of a nozzle unit, and a nozzle unit having at least one air nozzle orientated towards the vortex chamber such that an air flow exiting the air nozzle impinges on the sliver in the vortex chamber with a rotation flow. The thread-forming unit has an element carrier for detachably receiving and releasing the thread-forming element or, alternatively or in addition, can be linearly shifted in conjunction with the air jet spinning device relative to the nozzle unit between a closed operating position and an open cleaning position, and the air jet spinning device can be linearly shifted and/or pivoted in the cleaning position.

Method for cleaning an air jet spinning device of a spinning station, an air jet spinning device and a thread-forming unit for an air jet spinning device. The air jet spinning device has a thread-forming unit having a thread-forming element arranged in a vortex chamber of a nozzle unit, and a nozzle unit having at least one air nozzle orientated towards the vortex chamber such that an air flow exiting the air nozzle impinges on the sliver in the vortex chamber with a rotation flow. The thread-forming unit has an element carrier for detachably receiving and releasing the thread-forming element or, alternatively or in addition, can be linearly shifted in conjunction with the air jet spinning device relative to the nozzle unit between a closed operating position and an open cleaning position, and the air jet spinning device can be linearly shifted and/or pivoted in the cleaning position.

An air jet spinning machine, air jet spinning machine for producing a thread from a fed sliver, and method for detecting a thread strength, which falls below a target value, of a thread produced at a spinning unit of an airjet spinning machine are provided. A thread manipulation unit is arranged in the region between the airjet spinning machine and the spooling device, which thread manipulation unit acts mechanically on the thread and exerts an adjustable thread tension influencing force, in particular an adjustable braking force, compression force and/or clamping force, onto the thread in order to variably increase thread tension. In the method, an adjustable thread tension influencing force is exerted onto the thread, and a thread breakage and/or thread breakage rate are/is detected and compared with a specified target rate, and thread breakage and/or deviations of thread breakage rate beyond a predetermined limit value are displayed and/or evaluated.

A production process of mixed yarns and mixed yarns obtained from circular and or sustainable and or biodegradable textiles within any textile industry and or adapted in the machines within spinning mills. This makes possible a very large combination of different types of textile yarn mixtures and a wide range of weights of mixed sustainable and or biodegradable yarns, to meet and create new demands for sustainable and circular textile products. The process described for injection of compressed air is the combination and mixing of sustainable and circular and or biodegradable continuous filament yarns with biodegradable, and sustainable natural and/or artificial spun yarns, bringing technology to the products in line with the sustainability of the environment. This makes possible a definitive solution in ocean contamination by synthetic fibers and prevents much of the artificial textile fibers from fabrics and clothes, which release their cut fibers during industrial and domestic washing.

The invention relates to a device (1) for individualizing fibers of a supplied fiber sliver end and to a spinning device (2) comprising such a device (1). The device (1) comprises a first hollow body section, to which pressure can be applied and which comprises an inlet channel segment (3) for receiving and guiding a supplied fiber sliver end together with a fluid in the direction of an unraveling channel segment (6) arranged downstream thereof, and the unraveling channel segment (6), which communicates with the inlet channel segment (3) and is arranged downstream thereof, for unraveling the fiber sliver end supplied together with the fluid into individual fibers. The unraveling channel segment (6) forms an annular channel (10) which communicates with the inlet channel segment (3). The annular channel (10) has a channel inlet (11) with a first passage width and a channel outlet (12) at a distance therefrom with a second passage width, wherein in a section extending from the first passage width to a central passage width of a channel center arranged between the channel inlet (11) and the channel outlet (12), the passage width of the annular channel (10) tapers constantly or in sections such that the central passage width is smaller than the first passage width.

A spinning machine (1) features a multiple number of work stations (3) arranged side by side between two front-side ends (2) of the spinning machine (1) on at least one longitudinal side of the spinning machine (1), each of which features a multiple number of work elements for the production and winding of a yarn (31), whereas the work elements comprise at least one feed device (4), one spinning chamber (5), one draw-off device (6) and one winding device (7). The spinning machine (1) features drives for driving the work elements and a suction device (8) for generating negative pressure at the work stations (3). The suction device (8) includes at least one negative pressure source (9) and at least two negative pressure channels (10), which extends in the longitudinal direction of the spinning machine (1) only over one part of the work stations (3). Thereby, each work station (3) features an individual drive (11), in particular an individual electrical drive (11), for the draw-off device (6).

A spinning machine (1) features a multiple number of work stations (3) arranged side by side between two front-side ends (2) of the spinning machine (1) on at least one longitudinal side of the spinning machine (1), each of which features a multiple number of work elements for the production and winding of a yarn (31), whereas the work elements comprise at least one feed device (4), one spinning chamber (5), one draw-off device (6) and one winding device (7). The spinning machine (1) features drives for driving the work elements and a suction device (8) for generating negative pressure at the work stations (3). The suction device (8) includes at least one negative pressure source (9) and at least two negative pressure channels (10), which extends in the longitudinal direction of the spinning machine (1) only over one part of the work stations (3). Thereby, each work station (3) features an individual drive (11), in particular an individual electrical drive (11), for the draw-off device (6).

An air-jet type spinning device (4), comprising a body (8) at least partially hollow which defines a spinning chamber (12), a fibre feeding device (16), facing said spinning chamber (12) so as to feed the fibres into the spinning chamber (12), a spinning spindle (20) at least partially inserted in the spinning chamber (12) and fitted with a spinning channel (24) for the suction of yarn obtained from said fibres, the spinning channel (24) defining a spinning direction (X-X), at least one channel (28) for sending a jet of compressed air to be sent inside the spinning chamber (12). Advantageously, the body (8) comprises a flow amplifier (32) comprising an expansion chamber (36) in fluidic connection with the outside of the body (8), wherein the at least one channel (28) comes out in an emission point (40) inside the expansion chamber (36), to introduce compressed air at an inlet cross-section (44), measured in relation to a cross-section plane (S-S) perpendicular to said spinning direction (X-X), wherein the expansion chamber (36) comprises an outlet mouth (48), fluidically connected to the spinning chamber (12) and having an outlet cross-section (52) smaller than said inlet cross-section (44), said outlet cross-section (52) being measured relative to a cross-section plane (S-S) perpendicular to said spinning direction (X-X), said outlet mouth (48) being shaped so as to present a profile shaped to create an outlet path of the air parallel to said profile by means of the Coand{hacek over (a)} effect.