Abstract: A method for processing a strand-type fiber bundle includes sending the fiber bundle to an air nozzle of a pre-spinning machine used to produce roving. During normal operation, a twist is imparted to the fiber bundle via a vortex air current within the air nozzle to form the roving, wherein the roving leaves the air nozzle through an outlet and is deposited in or on a receptacle. Normal operation of the pre-spinning machine is interrupted in a stop phases during which roving is not produced by the air nozzle. A start-up phase is commenced between the stop phase and subsequent normal operation wherein the roving produced during the stop phase is discarded via a roving discharge after leaving the air nozzle when quality of the roving does not meet a desired specification. The roving discharge is deactivated when the quality of the roving meets the desired specification and the roving removed by the roving discharge is separated from the roving.

Abstract: A thread draw-off nozzle for an open-end rotor spinning device includes a front surface, a nozzle bore, and a funnel-shaped yarn deflection surface connecting the front surface and the nozzle bore. The front surface adjoins the yarn deflection surface. The front surface and the yarn deflection surface form an effective diameter (DW) of the thread draw-off nozzle. The effective diameter (DW) of the thread draw-off nozzle is less than 8 mm, and the yarn deflection surface comprises a radius of curvature (R) of less than 2.5 mm.

Abstract: A system and corresponding method are provided for controlling production in a blow room, the blow room including a controller, a supplying machine having a supplying part, and a machine to be supplied that has a filling level measurement. The supplying machine and the machine to be supplied are connected to the controller. A production area is defined for the supplying machine and includes a minimum production and a maximum production. Production of the supplying part of the supplying machine is determined based on a filling level of the filling level measurement. When production of the production area drops below the minimum production, the supplying part of the supplying machine is shut down, the shutdown taking place independently of the filling level of the machine to be supplied.

Abstract: A textile machine and associate method are provided for producing a roving, wherein a consolidating means produces a roving having a protective twist from a fiber bundle. A winding device is arranged downstream of the consolidating means in a transport direction of the roving and winds the roving onto a tube driven by a tube drive. An arrangement is disposed to bring the roving leaving the consolidating means during a roving production start procedure into contact with the tube. The arrangement includes a movably mounted suction unit with a suction opening that is configured to suck up the roving during ongoing roving production. Means are provided to bring the roving running between the consolidating means and the suction opening into contact with the tube during ongoing roving production.

Abstract: A method for operating a textile machine is provided to produce roving from a fiber bundle with a consolidating means, the roving having a protective twist. The produced roving is wound onto a tube with a winding device. During the winding process, the roving is guided a guide element arranged between the consolidating means and the tube, wherein the guide element exerts a decelerating effect on the roving. The decelerating effect is controlled during operation of the textile machine such that the decelerating effect is lower during a start procedure while the roving leaving the consolidating means is brought into contact with a tube or during a tube change while a wound tube is replaced by an empty tube than during a winding process that takes place between the start procedure and the tube change.

Abstract: A maintenance device for servicing adjacent work stations of a textile machine includes an operating unit that further comprises at least one operating component configured to perform a service operation at the work stations. Driving rails are disposed alongside the workstations, and a guide moves the maintenance device on the driving rails in a direction of travel alongside the work stations. The maintenance device moves on the driving rails from a maintenance position in which one of the work stations is serviceable by the maintenance device into an inspection position in which the maintenance device can be inspected. For transport of the maintenance device from the maintenance position into the inspection position, the operating unit is pivotal relative to the guide unit and/or the operating component is movable relative to the operating unit.

Abstract: A method and associated textile machine are provided to produce a roving having a protective twist from a fiber bundle fed to a consolidating means. The produced roving is wound with a winding device onto a tube arranged at a winding position. After the wound tube has been fully or partially wound with the roving, a tube change is initiated. During the tube change, the wound tube is removed from the winding position and an empty tube is moved into the winding position. During the tube change, the roving is wound onto the wound tube at least until the roving comes into contact with the empty tube as a result of the tube change such that the production of the roving is not interrupted during the tube change. During the tube change, the roving is wound onto the wound tube in a region that lies outside a region last wound prior to the tube change.

Abstract: A method for depositing a yarn end on a bobbin wound on a tube in a defined manner during winding of yarn on the bobbin at a workstation of a spinning and winding machine includes terminating spinning production of the yarn at the workstation to create a yarn end. The yarn end is then prepared with working devices at the workstation, including rotating the bobbin in a direction opposite to a winding direction during production of the yarn. A yarn reserve is formed, and the yarn end is then deposited in a defined manner on the tube outside of the profile of a standard yarn package.

Abstract: A method for depositing a yarn end of a yarn on a bobbin wound on a tube in a defined manner during winding of yarn on the bobbin at a workstation of a spinning and winding machine includes detecting the yarn end on the bobbin via an attending device. After detecting the yarn end, the yarn end is passed to devices at the workstation, and with the devices at the workstation, the yarn end is directed in a defined manner outside of a profile of a standard yarn package wound on the bobbin prior to the yarn end being deposited onto the tube outside of the yarn package profile.

Abstract: A spinning preparation machine includes a consolidating means for producing a roving having a protective twist from a fiber bundle, a drafting system arranged upstream of the consolidating means, a winding device arranged downstream of the consolidating means, and a movably mounted traversing element adjacent the winding device to guide the roving being wound onto a tube. In a side view of the spinning preparation machine, the consolidating means is arranged vertically between at least one feed roller of the drafting system and the traversing element, and the feed roller and the traversing element are arranged on a same side of the consolidating means so that in operation of the spinning preparation machine, the roving experiences a change in direction after exiting the consolidating means and prior to being wound onto the tube.

Abstract: A method is provided for operating an air spinning machine with a multiple number of spinning units, whereas each spinning unit has a spinning nozzle with an internal vortex chamber. The spinning nozzle is fed a fiber composite during the operation of the spinning unit. The spinning nozzle has a multiple number of air nozzles leading into the vortex chamber through which compressed air streams into the vortex chamber in order to generate a vortex air flow within the vortex chamber. The fiber composite receives a twist with the assistance of the vortex air flow within the vortex chamber such that a yarn is formed from the fiber composite. The air spinning machine features an additive supply, whereby an additive is at least temporarily fed a part of the spinning units. A liquid additive is used, whereas the additive is degassed prior to leaving the additive supply. In addition, an air spinning machine with a degassing device is described.

Abstract: A spinning preparation machine for processing a fiber material includes a drafting system that moves the fiber material in a direction of conveyance and includes a plurality of roller pairs arranged one after the other with upper rollers and lower rollers. Elongated stripping devices having a stripping edge are in contact with the upper rolls to remove dirt and other contaminants therefrom. A suction hood is mounted above the stripping devices and is connected to a vacuum source. Each stripping device is mounted in an individual respective suction channel, and the stripping edge of the stripping device protrudes through a first opening in the respective suction channel. Each suction channel is mounted on a bottom wall having openings therein and includes a second opening opposite the first opening that is aligned opposite from one of the openings in the bottom wall. The suction hood protrudes beyond the openings in the bottom wall and is mounted on a side of the bottom wall opposite the suction channels.

Abstract: A spinning preparation machine has consolidating means for producing a roving from a fiber bundle and a drafting system for drafting the fiber bundle. The drafting system is arranged upstream of the consolidating means in a transport direction of the drafting system. A guide is arranged upstream of the drafting system for guiding the fiber bundle between a container providing the fiber bundle and the drafting system. The guide has a feed segment opposite from the drafting system and a delivery segment facing the drafting system. The spinning preparation machine has a winding device for winding the roving onto a tube, and a tube transport device for providing empty tubes and/or for removing tubes loaded with roving by the winding device. The tube transport device has a conveyor for transporting empty tubes and/or tubes loaded with roving, wherein the conveyors are arranged at least in part between the feed segment of the guide and the drafting system.

Abstract: A process for calibrating the loading force of a breaker element of a bale opener on a bale group includes: (a) setting a force sensor used to measure the loading force at no load; (b) lowering the breaker element onto the bale group until reaching a loading force that is at least twice as high as an upper loading force at which the breaker element receives a lift command during normal breaking operation; (c) relieving the load on the breaker element; (d) setting the loading force at a negative value which includes signal distortion influences; and (e) lowering the breaker element until the loading force measured by the load sensor reaches at least the level of the upper loading force.

Abstract: An air spinning machine for producing a yarn from a fiber structure includes a spinneret with an internal eddy chamber. A spindle in the spinneret has an intake opening and extends into the eddy chamber. An annular gap is formed between an outside surface of the spindle and an inside wall of the eddy chamber. Air jets in the spinneret introduce air into the eddy chamber to impart twist to the fiber structure at the intake opening. An interior draw-off channel in the spinneret has a longitudinal axis by means of which the yarn is withdrawn from the eddy chamber. The air jets are aligned in a direction relative to a front side of the spindle around the intake opening so that some of the air introduced via the air jets during a spinning operation enters the annular gap and a remainder of the air enters the draw-off channel.

Abstract: The invention relates to a spinning station (1) of a spinning machine, wherein the spinning station (1) has a spinning means (2) for producing a yarn (3) from a sliver (4) fed to the spinning means (2), wherein the spinning station (1) has a winding apparatus (20) for winding the yarn (3) onto a package (16), said winding apparatus (20) being arranged downstream of the spinning means (2) in a transport direction of the yarn (3), wherein the spinning station (1) has a yarn clearer (5) arranged between the spinning means (2) and the winding apparatus (20), the yarn being monitorable for yarn defects with the aid of said yarn clearer (5), and wherein the spinning station (1) is assigned a controller (6) which is configured to interrupt the production of the yarn (3) if a defined yarn defect is detected.

Abstract: A support is provided for a flexible bend in a revolving flat card, the flat card having a cylinder and a cylinder axis. The support has at least three bearing points, with each bearing point comprising a bearing bolt and an adjusting lever. At each bearing point, the flexible bend is held on the bearing bolt such that a rotational motion of the bearing bolt brings about a displacement of the flexible bend radially with respect to the cylinder axis. Each bearing bolt has a bearing bolt axis, a fastening portion, a moving portion, and a contact surface for contact with the flexible bend. The contact surface is formed by a surface that spirals around the bearing bolt axis.

Abstract: A bale opener for the take-off of fiber tufts from fiber bales includes a take-off tower, which is arranged on a horizontal drive or a rotating frame, and a take-off arm. The take-off arm is held on the take-off tower in a guide so as to be vertically adjustable. A single lifting spindle having a longitudinal axis in the movement direction of the take-off arm is provided for the vertical adjustment of the take-off tower. The lifting spindle is fastened on the take-off tower and the take-off arm is connected to the lifting spindle via a nut.

Abstract: A channel plate adapter is provided for use in a cover of a rotor housing of an open-end spinning device, wherein a rotor is rotatably arranged in the rotor housing. The channel plate adapter includes an output fiber channel that conveys fibers to the rotor, the output fiber channel having an inlet side where fibers enter and an outlet side from which the fibers exit towards the rotor. The output fiber channel further includes a bend between the inlet side and the outlet side, the bend splitting the output fiber channel into a first section formed between the inlet side and the bend, and a second section formed between the bend and the outlet side. The bend changes direction of the second section relative to the first section such that the second section is oriented against a direction of rotation of the rotor.

Abstract: A rotatably mounted suction drum (14) of a device (VM) for compacting a fiber material (V) on a spinning machine having an annular drive element (20) which, in the operating position, rests via a portion of its inner surface (IF) on a portion of a circular peripheral surface (AU) of a projection (13) that extends coaxial to an axis of rotation (A1) of the suction drum (14) and is mounted on an end face (35) of the suction drum (14). In order to prevent fibers detached from the fiber material (V) from settling between the inner surface (IF) of the drive element (20) and the peripheral surface (AU) of the projection (13), the suction drum (14), on the end face (35) having the projection (13), has a peripheral elevation (36) and the drive element (20) on the side (46) directed toward the end face (35) of the suction drum (14) has a peripheral recess (37), wherein the elevation (36) protrudes into the recess (37) a labyrinth seal.