Sliver feeder and method

Abstract

The invention relates to a sliver feeder for a textile machine. The sliver feeder comprises at least one pick-up unit and at least one feeder unit. In order to improve the handling of fibrous material and increase the quality of slivers to be transferred to the pre-compactor, thereby increasing process stability and thus saving resources, it is provided that the picker is designed and arranged to pick up slivers, in particular to pick up slivers from a can of the textile machine and transfer the slivers to the feeder unit, the feeder unit has a takeover section and is designed and arranged to transfer the slivers to a sliver guide, in particular to a pick-up section of a pre-compactor.

Description

[0001] The invention relates to a sliver feeder for a textile machine. The invention relates to a vortex nozzle. The invention relates to a service unit. The invention also relates to a method for picking up sliver in a textile machine. The invention also relates to a textile machine.

[0002] Sliver feeders are known in the field of textile machines, in particular spinning machines or twisting machines. Sliver feeders are used to transfer fiber material, which may be provided in the form of slivers in cans, to a spinning device, also called a spinning station.

[0003] The handling of fiber material is a technical challenge because, on the one hand, the fibers must be kept together so that they can be processed, but on the other hand, they must not be overly compressed, as this would make further processing more difficult. The handling of the many individual fibers in the sliver can only be done in a complicated manner at the transfer point of the spinning station of the textile machine. If the fiber material is not transferred accordingly to the take-up section of the textile machine, this can lead to malfunctions in the textile machine, for example due to clogging of the spinning station. In addition, malfunctions can occur because slivers are lost and have to be picked up again. This requires time and resources.

[0004] It is therefore an object of the present invention to improve the handling of the fiber material and to increase the quality of the sliver to be transferred, in particular in order to increase process stability and save resources.

[0005] This object is achieved by a sliver feeder having the features of claim 1. This object is achieved by a vortex nozzle having the features of claim 7. This object is achieved by a service unit having the features of claim 9. This object is achieved by a method having the features of claim 10. This object is achieved by a textile machine having the features of claim 14.

[0006] Advantageous embodiments of the invention are subject matter of the dependent claims.

[0007] According to one aspect, this object is achieved by a sliver feeder having the features of claim 1 .

[0008] The sliver feeder may have at least one pick-up unit and at least one feeder unit. The pick-up unit may be designed and arranged to pick up the sliver and transfer the sliver to the feeder unit. In particular, the feeder unit has a pipe section and is designed and arranged to transfer the sliver to a sliver guide, in particular a pick-up section of a precompactor. This may improve the handling of the fiber material. Furthermore, the quality of the sliver to be transferred to the sliver guide can be improved. As a result, the process stability may be increased, thereby saving resources.

[0009] A section is a dimensionally defined area of ​​a part or fragment of a physical object, such as a component or element of a component or a device or apparatus.

[0010] The fibers are present in particular in the form of a sliver, wherein the sliver can be in a material transport state. In particular, the fibers are connected to one another, for example purely by mechanical friction forces within the sliver, so that the sliver does not unravel on its own and the fibers can be transported. In particular, the sliver is designed so that it can be inserted into a textile machine. The sliver can be designed to be fed to a sliver guide, in particular a pre-compactor.

[0011] In particular, a sliver guide is a structure designed and arranged to guide the sliver between the can and the spinning station. As a result, the weight load on the sliver is reduced, for example due to the sliver's own weight. As a result, the sliver is particularly less likely to tear off from the spinning station or the sliver is less likely to break.

[0012] In particular, the sliver guide may be a pick-up section of a pre-compactor. A pre-compactor is a device in a textile machine that can increase the density in the sliver. The pre-compactor can be designed to prepare the sliver and the fibers conveyed in the sliver for a textile production process, such as a spinning process performed in a defined manner, wherein the spinning process specifically takes place in a spinning station of a corresponding spinning machine. The pre-compactor is designed to achieve pre-compacting of the sliver before feeding the fiber material of the sliver to another processing step, such as a spinning process, in which the sliver production line is produced. In particular, the pre-compacting may cause the sliver to be compressed in a defined manner relative to the sliver thickness when passing through the pre-compactor. For this purpose, the pre-compactor may specifically have a sliver guiding section that extends in the sliver conveying direction and tapers in a defined manner. The taper may be continuous, specifically edgeless, or discontinuous, for example stepped.

[0013] The sliver is fed into the textile machine in so-called cans. A can may be a container designed to accommodate at least one sliver. One sliver end may protrude beyond the edge of the can in order to be recognized and picked up by a pick-up unit. Alternatively or additionally, a pick-up unit may also engage in the can in order to pick up the sliver from the can. The sliver is specifically stored in a can, which may be designed to be replaceable. Thus, the sliver can be removed from the can and fed into the textile machine. In order to be able to transition from the can to a sliver guide, such as a pick-up section of a pre-compactor, a device may be required that is able to carry out the removal from the can.

[0014] In particular, the pick-up unit is a device capable of picking up a sliver from the edge of a can and / or from a can. This can be achieved, for example, using a mechanical or electromechanical gripping device. Alternatively, according to a preferred embodiment, a suction device can be provided, as described elsewhere. In particular, the pick-up unit assumes the function of picking up the sliver end from the can.

[0015] An embodiment can be provided in which the pick-up unit also serves as a feeder unit. The pick-up unit can not only pick up the slivers, but can also feed the slivers into a sliver guide, such as a pick-up section of a pre-compactor, and is therefore configured as a feeder unit. This allows a simpler construction to be achieved, since only one component can be provided.

[0016] The feeder unit is specifically a device that is specifically arranged and designed to insert the sliver into the feeding section of the spinning station, wherein the feeder unit is at least arranged and designed to transfer the sliver to the sliver guide. The feeder unit can be arranged in one unit together with the pick-up unit, as described above. Alternatively (or additionally, for different spinning stations), the feeder unit can form its own component, which can be specifically designed so as to have a take-over section that can be positioned relative to the pick-up unit to enable take-over from the pick-up unit. The feeder unit and the pick-up unit can face each other in the transfer position so that the transfer can be achieved in one line. In other words, the feeder unit can face the pick-up unit so as to be able to transfer / take over the sliver. In addition, the feeder unit is specifically designed to subsequently perform a movement so as to bring the sliver into the vicinity of the feeding section of the spinning station so as to be able to transfer to the spinning station. The feeding section of the spinning station, in particular the sliver feeder for feeding the sliver to the downstream spinning station where the yarn is spun, and the pick-up section of the feeder unit can face each other. This makes the transfer easy and reduces the possibility of sliver loss (in the sense of falling) during one of the transfers.

[0017] In this and other preferred embodiments, it can be provided that the feeder unit is designed and arranged so that when the sliver, in particular the sliver end, is fed to the feeding section of the spinning station, the feeder unit threads or inserts the sliver into the sliver guide according to one of the preferred embodiments described.

[0018] According to one aspect, the feeder unit can be designed to take over the sliver, in particular the sliver end, from the pick-up unit in one station. The take-over section of the feeder unit can be designed as a suction section of the feeder unit, which is in particular oriented parallel to the holding orientation of the pick-up unit in order to suck in the sliver, in particular the sliver end, in particular in such a way that the sliver or the sliver end is directly taken over. As a result, the probability of sliver falling is reduced. This in particular increases process stability, thereby saving resources.

[0019] In this and other preferred embodiments, the pick-up section can be designed as a suction section. The suction section is formed in particular by the opening of a suction tube, wherein the tube forms a main suction direction which is in particular perpendicular to the opening surface. This can also correspond to a suction flow (in a physical-mathematical sense) or coincide with the suction flow.

[0020] The expression "oriented parallel to the holding orientation of the pick-up unit" may in particular be understood to mean that this orientation may in particular be defined by the above-mentioned main suction direction. In particular, this main suction direction is parallel to the transfer direction from the pick-up unit to the feeder unit in the conveying arrangement of the two devices. In particular, the two directions may coincide on a common line.

[0021] The expression "in a station from a pick-up unit" may specifically refer to a take-over station of the feeder unit relative to the pick-up unit. Alternatively, a preferred embodiment may be provided, in which the pick-up unit moves towards the feeder unit in order to transfer the slivers, in particular the sliver ends, to the feeder unit. In one station of the pick-up unit, the feeder unit also occupies a station. In another station of the feeder unit, provision may be made that the feeder unit may be positioned near the pick-up section of the pre-compactor in order to be able to transfer the slivers correspondingly to the pick-up section of the pre-compactor. This results in a transition from one station to another, or from another station to one station, in particular by moving the feeder unit and / or the pick-up unit, as described elsewhere. In this way, the pick-up unit may also perform alternative or additional movements in order to be able to change from a pick-up position (one station) to a transfer position (another station), or from a transfer position to a pick-up position.

[0022] The sliver, in particular the sliver end, can be taken over directly. "Directly" means the possibility that the sliver or the sliver end can come into contact with both the pick-up unit and the feeder unit for a period of time. In particular, the sliver or the sliver end does not have to be deposited at the same time in order to perform a new pick-up by the feeder unit. Instead, the transfer takes place directly, in particular without intermediate stages (and / or without intermediate steps).

[0023] According to one aspect, the feeder unit can be designed to perform a movement (as mentioned before) in order to transfer the sliver to the feeding section of the spinning station and / or to the pick-up section of the pre-compactor. The feeder unit and the feeding section of the spinning station can be oriented so that the sliver bends during the transfer. In particular, this makes a repeatable transfer possible. In particular, this also enables an easily travelable path for the feeder unit between a (first) station / position of the feeder unit to the pick-up unit and a further (second) station / position of the feeder unit to the spinning station. In particular, a transfer to the feeding section of the spinning station, in particular a rotor or jet spinning station, can be achieved.

[0024] The movement may be a rotational movement of the feeder unit; alternatively or additionally, the entire assembly may be rotatable about at least one axis. As a result, the feeder unit can be changed between the above-mentioned positions (also called stations), in which the feeder unit takes over the sliver, in particular the sliver end, from the pick-up unit in one position / station (also called positioning) and transfers the sliver to the pick-up section of the pre-compactor and / or the feeding section of the spinning station in another station.

[0025] Here and elsewhere, take over and transfer are used specifically with respect to the assembly just described. As an example, a transfer or delivery from a pick-up unit to a feeder unit should be understood as simultaneously taking over or picking up the feeder unit from the pick-up unit. Thus, assemblies and devices can also assume different roles of a pick-up unit and a dispensing unit or a transfer unit and a take-over unit.

[0026] The curvature of the sliver is specifically designed so that the sliver is oriented in one (first) orientation in the suction section of the feeder unit, while the sliver is oriented in another (second) orientation in the feeding section of the spinning station. The two orientations of the sliver can be mirrored relative to each other on an axis, in particular a vertical axis. The sliver bends through the mirror plane, in particular when transitioning from one orientation to the other. As a result, in particular a secure and controlled transition is achieved. In particular, the feeding section of the spinning station is designed as a sliver feeding section, for example in the form of a supply roller, such as a supply roller of a rotor spinning machine or an input roller of a pair of input rollers of a drafting system of a jet spinning machine.

[0027] According to one aspect, at least one preparation device, in particular a rotating nozzle, further in particular at least one separation nozzle, can be specifically designed and arranged to pick up the sliver end from the pick-up unit and prepare the sliver end for transfer to the feeder unit. This is done in particular by at least one of cutting the sliver end and / or sharpening the sliver end, which is preferably performed by the preparation device. Sharpening, like sharpening a pencil, means reducing the thickness of the sliver until the free end of the sliver, in particular by compressing the fibers and / or reducing / thinning the number of fibers. In other words, starting from the free end of the sliver, the sliver thickness increases continuously in the extension direction of the sliver until the sliver thickness in the sharp area corresponds to the sliver thickness of the adjacent sliver section and merges into it. As a result, the sliver can be prepared so that the fibers can be handled more easily when transferring / taking over, thereby improving process reliability and optimizing the transition.

[0028] There may be preferred embodiments combining the aforementioned aspects and embodiments with the preparation device described herein. In other preferred embodiments, such as for other pick-up units or other feeder units, the preparation device described herein may also be used. The preparation device is specifically used to take over the sliver end from the pick-up unit and prepare the sliver end for transfer to the feeder unit (or from the feeder unit to the spinning station). As a result, regardless of the structural and functional design of the feeding section and / or sliver guide of the feeder unit, pick-up unit or spinning station, in particular the pick-up section of the pre-compactor as described herein and their relative positions in the different stations as described herein, the preparation of the sliver end can be achieved so as to achieve a stable transfer and reduce the possibility of any damage to the sliver or loss of the sliver. As a result, process reliability can be improved and fewer resources can be used.

[0029] In particular, the sliver end is the free end of the sliver, through which the sliver can be inserted into the feeding section of the spinning station or through which the sliver can be picked up or picked up in the suction section of a feeder unit.

[0030] According to a preferred embodiment, the separation nozzle can be used as a preparation device. In particular, it can be provided that the sliver end can be cut off in order to obtain a new, "fresh" sliver end. As a result, damaged fibers can be removed to reduce the risk of breakage during subsequent thread production. The separation can be achieved in particular by applying a vacuum. The section behind the free end of the sliver is pulled apart so that the sliver end is cut off from the sliver and removed. However, the separation can also include cutting the sliver, in particular by means of a cutting tool.

[0031] Alternatively or additionally, a sharpening of the sliver end can be provided, by which the fibers taper toward the end and the diameter of the sliver decreases toward the sliver end. To this end, a pressurized fluid nozzle can be provided in the preparation device, which produces a conical compression of the fibers toward the sliver end by means of a pressurized fluid jet. As a result, the above-mentioned sharpened sliver end can be formed.

[0032] According to a preferred aspect, the pick-up unit may have a negative pressure sensor which is specifically designed and arranged such that sliver monitoring can be performed. The negative pressure sensor may be designed and arranged to monitor the negative pressure present in the pick-up unit so that a further sliver search can be initiated if necessary based on a threshold value. As a result, it can be determined whether a sliver has been successfully delivered to the feeder unit or whether a sliver loss has occurred.

[0033] Sliver monitoring can be used in particular to determine whether the sliver has been picked up accordingly. It can be provided that, in a textile machine, a series of defined workstations can be traversed by a sliver feeder of the type described here. This is possible because the described sliver feeder is arranged on a service unit, as described elsewhere. In each case, the workstation can have a can, a feeding section of a spinning station associated with the respective workstation and / or a pick-up section of a pre-compactor. With the aid of a pick-up unit or different monitoring devices, such as sensors or cameras, the sliver feeder can determine where the picking up of the sliver is achieved. If several attempts are unsuccessful at a workstation (the number can be predefined, but can also be adjusted), the sliver feeder can move to the next workstation and ignore a workstation, mark the workstation as unresolved or abort the journey to the workstation and issue a warning to call the operator. The described actions can also be performed if slivers are lost repeatedly (the number of repetitions can also be set or predefined here).

[0034] Alternatively or additionally preferably, the feeder unit may have a negative pressure sensor. As a result, it can be determined whether the sliver was successfully transferred to the feeder unit and whether there was a sliver loss.

[0035] The negative pressure sensor may monitor the negative pressure when monitoring the sliver so as to initiate further sliver searches based on a threshold value. The threshold value may be defined as the number of unsuccessful attempts. Alternatively or additionally preferably, the threshold value may represent a negative pressure level (the level of negative pressure or the intensity of negative pressure) from which it can be derived whether a sliver has been picked up.

[0036] According to a preferred aspect, a holding device for the sliver can be provided, in particular arranged on a pick-up section of a sliver guide, in particular on a pick-up section of a pre-compactor, or arranged on a support frame of a workstation, wherein the holding device is further preferably arranged upstream of the pick-up section in the direction of sliver transport. In particular, the holding device has at least one of the following structures:

[0037] A placement structure, in particular a placement hook or a placement eyelet, may be provided in order to support the sliver against its own weight, thereby reducing the tension acting on the sliver in the direction of gravity, in particular on the fibers in the feeding section of the spinning station and / or in the pick-up section of the sliver guide, in particular in the pick-up section of the pre-compactor. As a result, the likelihood of fiber damage may be reduced. Furthermore, the likelihood of the sliver being torn may be reduced. It is also possible to guide the sliver in this way. Alternatively or additionally, the placement structure may be designed and arranged to constrain, in particular to limit the movement of the sliver away from the machine, in particular in the transverse direction (i.e. towards the longitudinal side of the machine). As a result, the process of guiding the sliver into the feeding section of the spinning station and / or into the sliver guide, in particular in the pick-up section of the pre-compactor, may be improved.

[0038] A guiding structure can be provided, which is specifically designed and arranged to enable transverse guidance at least in the direction of one side of the sliver, specifically in the direction of one side of the sliver in the longitudinal direction of the textile machine (i.e. towards the front or rear side of the textile machine or in the direction of an adjacent workstation). In other words, the swinging out of the sliver can be limited parallel to the longitudinal side of the textile machine. As a result, the transverse tension can be reduced, thereby improving the guidance of the sliver and reducing the possibility of fiber damage. The guiding structure can be part of a sliver guide, specifically part of a pre-compactor. Preferably, the guiding structure is designed and arranged to transfer the sliver into a pick-up section of the pre-compactor while laterally limiting the pick-up section. According to a preferred embodiment, the guiding structure can at least partially or completely define the pick-up section laterally. Therefore, the guiding structure is arranged at least partially or completely adjacent to the pick-up section parallel to the sliver guiding direction. Both the guiding structure and the pick-up section can be arranged and / or designed on the surface of a plate-like carrier element, for example in the form of a front plate or a cover plate.

[0039] Furthermore, preferably, an anchoring structure may be provided between the pick-up section and the placement structure. The anchoring structure may form a strip boundary parallel to the longitudinal side of the textile machine. Preferably, the anchoring structure together with the pick-up section and the placement structure forms a pick-up area, which is at least partially defined by the pick-up section and the placement structure, in particular a U-shaped or C-shaped pick-up area, into which the strips may be inserted or fed via the open side of the feeder unit and may also be removed. In particular, the guide structure preferably connects the pick-up section to the placement structure, whereby the placement structure undergoes anchoring. In other words, the design may be such that the anchoring structure is arranged on the pick-up section and supported by the pick-up section, wherein the placement structure is arranged on the anchoring structure and supported by the anchoring structure and thereby anchored. The connection between the structures may be in a form-fitting, force-fitting or material-fitting manner. The anchoring structure is preferably designed as a rod-shaped load-bearing element.

[0040] According to a preferred embodiment, an at least partially movable blocking structure (also referred to as blocking device) can be arranged and designed to interact with the placement structure, in particular on the anchoring structure and / or the strip guide, so that in a first state, the removal of the strip from the area of ​​the placement structure is blocked, and in a second state, the placement structure is accessible for the insertion of the strip. The blocking structure can preferably be formed by a blocking element, such as an eyelet and / or a hook. Alternatively, the blocking structure is preferably formed by a rod-shaped blocking element. The blocking structure is movably mounted on at least one joint. In particular, the blocking structure can be movably mounted on the joint so that in particular the movement occurs in a direction parallel and / or antiparallel to the direction of movement of the feeder unit. The direction of movement can have at least one vector component, which can be realized on one side of the workstation and / or the textile machine. Preferably, the joint can be arranged on the placement structure or connected to the placement structure. The joint can also preferably form part of the placement structure.

[0041] In this or other preferred embodiments, the blocking structure can be moved into the open position by means of, for example, interaction with the feeder unit. It can be provided that the blocking structure is moved back to the blocking position specifically independently, for example by means of a return spring, which is specifically arranged and designed so as to interact with the joint for resetting. The return spring can also preferably be arranged in the joint. The blocking position can be a starting position. As a result, active monitoring of the position in operation can be eliminated, which simplifies the structure.

[0042] In order to achieve the described advantages and effects, the sliver, in particular the sliver end, can be inserted into the pick-up area of ​​the placement structure for transfer from the feeder unit to the pick-up section, in particular the pick-up section of the pre-compactor. Here, the term "for transfer from the feeder unit to the pick-up section (of the pre-compactor)" refers to the possibility of (temporarily) performing threading into the pick-up section of the placement structure before or after the transfer to the pick-up section (of the pre-compactor).

[0043] According to a preferred embodiment, the anchoring structure, the placing structure, the blocking structure and the pick-up section are designed and arranged such that they define a pick-up area for the sliver circumferentially at least 75% and further preferably circumferentially in the range of 95% to 100% (inclusive) in the circumferential direction of the arrangement of the structures and the pick-up section. The feeder unit is arranged and designed to feed the sliver to the pick-up area via interaction with the movable blocking structure so that the sliver can be transferred to the placing structure.

[0044] According to a preferred embodiment, the holding device can be a single component, which can optionally be arranged in the path of the sliver (also called sliver path) between the can (also called spinning can) and the sliver guide, in particular on a workstation or on the frame of a textile machine. Here, the workstation can be a point at which a spinning station can be arranged. The production of bobbins for winding the spinning thread onto a bobbin, in particular cross-wound bobbins, can also be realized in the workstation. Further preferably, the sliver guide with the holding device can be formed from a single component and arranged in the sliver path between the can and the spinning device. A single component is understood to mean a component which is in each case made of the same material or preferably of different materials joined together or formed in a material-matched manner.

[0045] The pick-up section of the sliver guide, in particular of the precompactor, can be a region that can be located directly / immediately in front of the section of the sliver guide that guides the sliver in a contacting manner. The sliver can be inserted or placed at or in the pick-up section.

[0046] According to another independent aspect, the object of the present invention is achieved by a nozzle body with a vortex nozzle, wherein the nozzle body is designed for a sliver feeder, in particular according to one of the described embodiments. The vortex nozzle is designed to be arranged in the nozzle body, in particular in a non-destructively replaceable manner. Alternatively, the vortex nozzle can be arranged to be fastened in the nozzle body. This arrangement makes it possible to pick up a sliver end from a pick-up unit and prepare the sliver end for transfer to a feeder unit, wherein at least one of the following functions can be performed: cutting off the previous sliver end to form a new sliver end or sharpening the sliver end to form a sharpened sliver end, as described above by way of example. As a result, the advantages and effects described specifically with respect to the sliver feeder can be achieved. Reference is made specifically to the comments elsewhere here. As a result, the sliver or sliver end can be prepared, in particular so that the sliver or sliver end can be handled more easily when transferring / taking over, thereby improving process reliability and optimizing the transition.

[0047] With regard to cutting and / or sharpening, reference is made to the comments elsewhere. These comments continue to apply accordingly to the vortex nozzles described here. Thus, the separation nozzles described elsewhere can be vortex nozzles.

[0048] The vortex nozzle has a cavity in which a vortex can be formed. In particular, the vortex can be designed so that at least one set of vectors of the vortex vector field has a component parallel to the component of the cavity wall in the circulation direction. In other words, a vortex is formed that is at least partially parallel to the cavity wall. In particular, the cavity wall has a circular and / or elliptical cross section.

[0049] The swirl nozzle can be designed to be replaceable. Specifically, the swirl nozzle can be designed to be removed from the nozzle body or inserted into the nozzle body. As a result, the design of the swirl nozzle, specifically the ability of the swirl nozzle to form a swirl, can be easily adapted to the sliver material.

[0050] According to one aspect, the swirl nozzle has a pressurized fluid nozzle. The pressurized fluid nozzle is designed and arranged such that a pressurized fluid flow can be introduced into the cavity of the swirl nozzle in order to generate a vortex of the pressurized fluid flow in the cavity. As a result, the sliver end can be prepared in a defined manner so that the sliver or sliver end can be handled more easily during transfer / takeover, thereby increasing process reliability and optimizing the transition.

[0051] The pressurized fluid nozzle can be connected to at least one pressurized fluid supply from a pressurized fluid source so that the pressurized fluid nozzle is subjected to a pressurized fluid flow. Specifically, the pressurized fluid nozzle is designed and arranged to introduce a pressurized fluid flow having at least one vector component along a loop parallel to the inner cavity wall. The pressurized fluid nozzle can be arranged in a direction having at least one vector component of a circulation direction pointing to the cavity inner wall in a tangential direction. The direction in which the pressurized fluid nozzle intersects the cavity inner wall so that the pressurized fluid flow is blown into the cavity can be at a certain angle to the tangential direction. Specifically, compressed air, dry air and / or nitrogen and mixtures thereof can be used as pressurized fluid.

[0052] The pressurized fluid nozzle intersects the inner wall of the cavity to introduce the pressurized fluid flow into the cavity, specifically blow it into the cavity in a main flow direction from a cross section of the pressurized fluid nozzle into the cavity interior.

[0053] The object is also achieved according to an independent aspect, in particular by a service unit. A pick-up unit and an introduction device with a suction section can be arranged on the service unit, the pick-up unit and the introduction device being assigned to each other so that a sliver section with a sliver end picked up by the pick-up unit is at least temporarily and at least partially sucked into the suction section of the introduction device. The section of the sliver to be sucked in is preferably the sliver end. The flow section in the service unit can be arranged downstream of the suction section and is designed to form a suction flow at the suction section of the introduction device. At least one filter can be arranged in the flow section, wherein the service unit and the filter are preferably designed so that the filter is arranged to be removable from the flow section. As a result, a separate introduction device can be provided to filter the sucked-in pressurized fluid flow, in particular an air flow, in particular after cutting off the sliver end, wherein fiber residues adhere to the filter. As a result, the introduction device remains free of fiber residues, which can increase the service life of the introduction device. The service unit and / or the introduction device may be equipped with a monitoring unit, in particular a pressure fluid sensor, which is used to monitor the pressure fluid flow and / or pressure value in the area between the filter and the introduction device and / or in the area of ​​the introduction device. In the event of a deviation from a threshold value, a conclusion can be drawn that the filter is clogged with fiber material, so that the filter can be cleaned in the event of a defined blockage, in particular by removal. For this purpose, the monitoring unit is preferably communicatively connected to an alarm unit so that an alarm signal is emitted in the event of a deviation from the threshold value, in particular in a visual, tactile and / or acoustic manner. For example, the alarm unit may be visibly arranged on the service unit and is designed to emit a visual alarm signal. Alternatively or additionally preferably, the alarm unit may be integrated into or arranged on a mobile device such as a smart watch, a tablet computer, a laptop computer, and is designed to emit an alarm signal in a visual, tactile and / or acoustic manner.

[0054] Typically, the service unit may be a unit that is movable along a workstation of the textile machine and suspended from a support frame of the textile machine. Preferably, the service unit has a connection structure, for example in the form of a roller unit, by means of which the distance between the service unit and the support frame can be reliably maintained. As a result, vibrations of the service unit when traveling along the workstation are prevented and reliable guidance of the service unit is ensured. Specifically, the roller unit has a roller that is arranged and designed to be able to roll along a roller guide on the support frame of the textile machine. The roller is connected to the frame of the service unit via a roller holder. Preferably, the roller unit is arranged in the lower area of ​​the service unit on a side of the service unit facing the support frame. As a result, the distance between the roller holder and the roller can be kept to a minimum, whereby the roller unit can be designed to have a reduced installation space.

[0055] Alternatively, the service unit may be a robotic unit such as a robotic vehicle such as an automated guided vehicle (AGV) or an autonomous mobile robot (AMR) which may move independently or autonomously in a known manner within a factory in which the textile machines are arranged.

[0056] According to a preferred embodiment, the sliver feeder can be arranged on the service unit, as specifically described elsewhere. In particular, the sliver feeder can be arranged in the lower area (lower section) of the service unit, as long as the service unit is suspended from a supporting frame of the textile machine and is movable along the textile machine. In particular, the sliver feeder can be arranged below the service unit. As a result, the sliver feeder can be moved along the textile machine with the aid of the service unit. The pick-up unit can be moved from one can to another in order to automatically remove the sliver from the can or from the edge area of ​​the can in each case and transfer the sliver to the feeder unit for feeding, as described elsewhere. By arranging the sliver feeder below the service unit, the pick-up unit can be moved closer to the can arranged or provided below the spinning station in order to facilitate the picking up of the sliver.

[0057] According to a preferred embodiment, a read-out unit for reading out a memory and / or a code is arranged on the service unit or the sliver feeder. In particular, the read-out unit is arranged and designed to read out a memory (such as an RFID or a chip) or a code (such as a thread and / or a barcode) attached to the can and to provide the read-out information to an evaluation unit for evaluation. The stored and readable information may be information about the sliver material stored in the can, which has been assigned to a workstation for processing. Reading out this information by the read-out unit and providing this information to the evaluation unit makes it possible to check whether the correct sliver material has been assigned to the workstation for the production of a predetermined thread with a defined quality, for which material is required for this particular sliver. The evaluation unit is preferably communicatively connected to a control and / or regulating unit, which controls the sliver feeder in a defined manner. In this way, the evaluation unit of the control and / or regulating unit can provide corresponding information when it is assessed that a wrong or incorrect sliver material has been assigned to a workstation for the production of a predetermined yarn. Furthermore, the control and / or regulating unit is specifically designed to control the sliver feeder taking this information into account so that the sliver feeder is not responsible for feeding the sliver from the can to the spinning station of the workstation. In this way, it can be avoided that the workstation processes wrong or incorrect fiber material to produce the intended yarn, whereby waste and faulty production can be minimized.

[0058] According to an independent aspect, the object is also achieved by a method for picking up sliver in a textile machine. In particular, the method comprises the step of picking up a sliver section by a pick-up unit. Alternatively or additionally, the method has the step of transferring the sliver, in particular the sliver end, from the pick-up unit to a feeder unit. Alternatively or additionally, the method comprises the step of transferring the sliver, in particular the sliver end, from the feeder unit to a pick-up section, in particular a pre-compactor and / or to a feeding section of a spinning station.

[0059] The definitions, technical effects and advantages given previously regarding the device continue to apply accordingly to the picking up of the sliver segments by the pick-up unit. Specifically, the sliver segments are picked up by the pick-up unit such that the pick-up unit picks up a sliver segment that is different from the free sliver end so that the free sliver end segment can be transferred. Alternatively, preferably, the pick-up unit is capable of picking up the sliver end. Therefore, the method can be described accordingly by the features of the device. The same applies to the description of the device by the features, effects and advantages shown with respect to the method. This also applies accordingly to the transfer of the sliver from the pick-up unit to the feeder unit and the transfer of the sliver from the feeder unit to the feeding section of the spinning station and / or the pick-up section of the pre-compactor.

[0060] According to one embodiment of the method, a sliver monitoring system may be provided. A negative pressure sensor may monitor negative pressure and initiate further sliver searches based on a threshold value.

[0061] With regard to "sliver monitoring" and with regard to monitoring of the negative pressure and initiating a further sliver search based on a threshold value, the definitions given for the device, the effects described and the advantages that can be achieved in this respect also apply accordingly to the method. Both categories can be described by the definitions, effects and advantages of the other category. The same applies to systems for textile machines.

[0062] Furthermore, an embodiment of the described method may provide for separation, in particular cutting, of the sliver ends.Alternatively or additionally, the sliver ends may be sharpened to form sharpened sliver ends.

[0063] With regard to "stripping, in particular cutting, of the sliver ends" and with regard to "strip tipping", the definitions given accordingly with regard to the device, the effects described and the advantages achievable in this respect also apply accordingly to the method. Both categories can be described by the definitions, effects and advantages of the other category.

[0064] According to an independent aspect, a method may be provided, in particular, a step of separating a sliver end (cutting off a sliver end to produce a new sliver end), in particular cutting a sliver end, may be provided. Alternatively or additionally, sharpening of the sliver end may be provided to form a sharpened sliver end. As a result, the advantages and effects described with respect to the embodiments described elsewhere for implementing the corresponding method steps may also be transferred to other methods for feeding sliver.

[0065] According to one embodiment of the described method, a step of inserting the sliver into a holding device may be provided. The sliver may be placed on a placement structure of the holding device for transfer to a feeding section of a spinning station and / or a pick-up section of a pre-compactor. Alternatively or additionally, the sliver may be inserted into a guide structure of the holding device.

[0066] Here, definitions, effects, advantages and features, specifically concerning "insertion into the holding device", the holding device, "transfer to the feeding section of the spinning station and / or the pick-up section of the pre-compactor" and the placement structure and the guiding structure of the holding device continue to apply accordingly, as explained elsewhere.

[0067] According to an independent aspect, the object is achieved by a textile machine, which in particular has a sliver feeder according to one of the preferred embodiments described elsewhere. Alternatively or additionally, the textile machine can have a nozzle body with a swirl nozzle, as described elsewhere. Alternatively or additionally, the textile machine can have a service unit, as described elsewhere. Alternatively or additionally, the object is achieved in particular by a textile machine designed and configured to perform one of the methods described elsewhere.

[0068] Specifically, the textile machine can be a rotor spinning machine or an air-jet spinning machine, and a sliver feeder can be designed for the rotor spinning machine or the air-jet spinning machine. For the rotor spinning machine or the air-jet spinning machine, after the sliver is passed into the holding device, the feeding section (also called the sliver feeder) of the spinning station of the rotor spinning machine or the air-jet spinning machine is realized to transfer the sliver to the rotor spinning machine or the air-jet spinning machine. Specifically, the sliver feeder has a controllable driven roller for controlling the feeding of the sliver. The roller can (but does not have to) be installed upstream of the pre-compactor, as described elsewhere. For example, the roller can be a supply roller, which, together with the rotor spinning machine, is responsible for feeding the sliver into the spinning device. Alternatively, the roller can be an input roller of a pair of input rollers of a drafting system, which, together with the air-jet spinning machine, is responsible for feeding the sliver into the spinning device. The pre-compactor can (but does not have to) be installed upstream of the pair of input rollers, as described elsewhere.

[0069] In the following, exemplary embodiments of the invention are described in more detail with reference to the accompanying drawings, which show schematically and by way of example:

[0070] Figure 1Ais a schematic diagram of a cross-section of a spinning machine;

[0071] Figure 1B is a schematic diagram of a view of a working station of a spinning machine;

[0072] Figure 2 is a schematic diagram of a view of a sliver feeder;

[0073] Figure 3A is a schematic diagram of a view of a separation nozzle;

[0074] Figure 3B is a schematic diagram of a view of a separation nozzle with a sliver end;

[0075] Figure 3C is a schematic diagram of a view of a separation nozzle with a fuse;

[0076] Figure 4 is a schematic diagram of a view of a separation nozzle designed as a swirl nozzle;

[0077] Figure 5 is a schematic diagram of a view of a pickup unit;

[0078] Figure 6 is a schematic diagram of a view of a holding device on a pre-compactor;

[0079] Figure 7 is a schematic diagram of a view of a bobbin below a holding device on a pre-compactor;

[0080] Fig. 8A is a schematic diagram of a side view of a holding device with an at least partially movable blocking device on a pre-compactor;

[0081] Figure 8B is a schematic diagram of a front view of a holding device with an at least partially movable blocking device on a pre-compactor;

[0082] Fig. 9 is a schematic diagram of a view of a service unit;

[0083] Fig.10 is a schematic diagram of the method;

[0084] Fig.11A It is a structural schematic diagram of the method steps of picking up slivers by a picking unit;

[0085] Fig. 11B is a schematic diagram of the structure of the method steps of inserting the strip into the suction point for cutting;

[0086] Fig. 11C It is a structural schematic diagram of the method steps of cutting;

[0087] Fig.11Dis a schematic structural diagram of the method steps of inserting a sliver into a suction point for sharpening;

[0088] Fig.11E is a schematic diagram of the structure of the method steps of sharpening; and

[0089] Fig.11F is a schematic diagram of the structure of the method steps in a sliver guide for feeding into a pre-compactor.

[0090] The same reference signs are used for elements and structures having the same function and / or of the same type.

[0091] Figure 1A 6 is a schematic diagram of a cross-sectional view of a spinning machine as an example of a textile machine 600. In particular, the textile machine 600 may have a plurality of workstations 620 which may be designed and arranged to spin yarns (also referred to as threads) in each case. Figure 1B 6. The workstation 620 is shown schematically in a detailed view in FIG.

[0092] In the textile machine 600, a sliver 135 can be provided for spinning the thread in the spinning station 465 of the workstation 620. Such a textile machine 600 can therefore be a so-called spinning machine. A rotor spinning machine can be provided as a spinning machine, as shown here as an example. Alternatively, an air-jet spinning machine (not shown) can also be provided. The sliver 135 can be transferred to the textile machine 600, but this can be achieved fully automatically or at least semi-automatically. For this purpose, the sliver 135 can be transported in a so-called sliver 630, presented in the sliver 630, or an empty sliver 630 can also be replaced by a filled sliver 630 in order to transport the sliver 135 to the workstation 620. The textile machine 600 can also consist of an entire series of (homogeneous) workstations 620, such as Figure 1A As shown and described accordingly in this regard, the workstation can be used to repeatedly feed sliver 135 in order to maintain the spinning process.

[0093] In order to be able to transfer from the can 630 to the pick-up section 460 of the pre-compactor 445, a sliver feeder 100 for the textile machine 600 can be used (per workstation). Alternatively, a service unit 900 can be provided, on which a sliver feeder 100 is arranged, as described elsewhere. The service unit 900 can be moved (freely) between the workstations along the textile machine 600, for example to insert the sliver 135 into the spinning station 465. Figure 2 , a sliver feeder 100 is shown in a schematic cross-sectional view. Specifically, the sliver feeder 100 has at least one pick-up unit 110 and at least one feeder unit 300.

[0094] The exemplary embodiment of the feeder unit 300 is functionally Fig.11F and are also described in this regard.

[0095] The pick-up unit 110 is specifically used to pick up the sliver 135 from the can 630 so that the sliver 135 can be transferred to the feeder unit 300. In particular, the feeder unit 300 has a pipe section that is formed and arranged to transfer the sliver 135 to the pick-up section 460 of the pre-compactor 445.

[0096] The feeder unit 300 can also be designed such that the sliver 135 , in particular the sliver end 140 , can be taken over from the pick-up unit 110 in one station. Figure 2 The feeder unit 300 shown is specifically constructed and arranged such that the pipe section of the feeder unit 300 is designed as a suction section 310. The suction section 310 is oriented such that its suction direction 350 is specifically parallel to the holding orientation 180 of the pick-up unit 110 (see also FIG. Figure 5 As a result, the sliver 135, in particular the sliver end 140, can be sucked in. In particular, this can be done in such a way that the sliver 135 or the sliver end 140 can be taken over directly from the feeder unit 300, for example without being deposited via an intermediate stage or structure.

[0097] In order to be able to subject the suction section 310 to negative pressure, a tube system 450 may be provided, which tube system in particular has a plurality of segments 452, 454, 456. The suction tube 320 of the feeder unit 300 (in particular independently of the tube system 450) may be designed to be curved, in particular to be bent substantially 90°, in order to transition from the supply area, in which it is connected to the feeder unit holder 340, into a substantially parallel orientation between the suction direction 350 and the holding orientation 180 of the pick-up unit 110. The suction nozzle 120 of the pick-up unit 110 may have a suction direction that deviates from the parallel orientation (not shown here for perspective reasons; the suction direction extends into the plane of the sheet). However, the sucked-in strips 135 that may have been picked up by the pick-up unit 110 may be transferred to the holding orientation 180 in order to be sucked in by the feeder unit 300, in particular in this direction (and therefore parallel to the suction direction 350 of the feeder unit 300).

[0098] Rotating mechanism 480 (see also Fig.11F) is arranged on the feeder unit holder 340 so that the feeder unit 300 is moved with its suction direction 350 to the vicinity of the holding orientation 180, in particular in as wide an overlap as possible, in order to take over the sliver 135 or the sliver end 140. After taking over the sliver 135 or the sliver end 140, the feeder unit 300 can be guided by a rotational movement to the vicinity of a pick-up section 460, in particular a pick-up section 460 of a pre-compactor 445. The sliver 135 or the sliver end 140 can be transferred to a feeding section 462 of a spinning station 465 in order to start or carry out the spinning process. In this preferred exemplary embodiment, the feeding section 462 is a supply roller. The feeder unit 300 is designed to insert the sliver end 140 and transfer it into the feeding section 462, specifically into the approach area of ​​the supply roller, so that after transferring the sliver end 140 from the feeder unit 300 to the feeding section 462, specifically to the supply roller, the sliver end 140 is further transported by the supply roller in the direction of the spinning device.

[0099] In particular, the pre-compactor 445 may prepare the sliver 135 for picking up in the feeding section 462 of the spinning station 465. The picking up direction of the feeding section 462 of the spinning station 465 may in particular be antiparallel to the orientation direction of the sliver 135 or the sliver end 140. To this end, in particular, a folding of the sliver 135 or the sliver end 140 occurs when transferring to the feeding section 462 of the spinning station 465. In other words, the feeder unit 300 is designed to perform a movement 365, in particular a rotational movement, in order to transfer the sliver 135, in particular the sliver end 140, to the picking up section 460 of the pre-compactor 445 and / or the feeding section 462 of the spinning station 465, wherein the sliver 135, in particular the sliver end 140, experiences a curvature when transferring to the feeding section 462 of the spinning station 465.

[0100] Strip end 140 Figure 3C Specifically, compared to the "normal sliver end" 140, it is a tapered, post-compacted fiber bundle, referred to as a sharpened sliver end 140b. For example, Figure 3B As shown, after the cutting step, the sliver end 140 may "spread out" (conically widen). Specifically, the diameter and / or radius at the sliver end 140 may be larger (or at least the same size) compared to the average sliver diameter or compared to the sliver diameter at the suction nozzle 120 of the pick-up unit 110. As a result, picking up the sliver end 140 into the feeder unit 300 may become more difficult.

[0101] In order to better prepare the slivers 135 for taking over by the feeder unit 300 and / or the pick-up section 460 of the pre-compactor 445, at least one preparation device 201, in particular at least one separating nozzle 200, can be provided. Figure 3ABy way of example. In particular, the separation nozzle 200 is designed and arranged to pick up the sliver end 140 (for a short time) from the pick-up unit 110. The sliver end 140 can remain connected to the pick-up unit 110 and remain attached to the suction nozzle 120 of the pick-up unit. In particular, therefore, a complete transfer in preparation for transferring the sliver end 140 to the feeder unit 300 does not take place.

[0102] The preparation may include at least one of the following functions that may be performed by the preparation device 201 (which are also understood as steps of the associated method accordingly):

[0103] The previous sliver end 140 is cut off, specifically by cutting or severing the sliver end from the sliver 135 by suction via the suction device of the feeder unit 300. As a result, the sliver is cut or cut in such a way that a new sliver end 140a is formed. As a result, impurities or damage can be removed, and a clean, undamaged sliver end 140a can be provided for other method steps.

[0104] exist Figure 3A An exemplary separation nozzle 200 is shown in a schematic diagram in a detailed view in FIG. The separation nozzle 200 is arranged together with a nozzle body 220 in a nozzle assembly 210 . Figure 4 An exemplary embodiment of a spacer swirl nozzle 205 is shown, which may be used as a separation nozzle 200 in a nozzle body 220. For example, a sleeve 230 is assembled to the nozzle body 220 by means of screws 270. The swirl nozzle 205 may have a cavity 240 for picking up the sliver end 140.

[0105] Also like Figure 4 As shown, a pressurized fluid nozzle 280 may be formed in the cavity 240, which may be connected to a pressurized fluid source (not shown) via an orifice 282 in an outer wall 284 of the nozzle body 220. This may be accomplished by inserting the nozzle body 220 into the nozzle assembly 210. Specifically, the pressurized fluid nozzle 280 is designed and arranged to introduce a pressurized fluid or pressurized fluid stream at an angle relative to the inner wall of the cavity 240. Specifically, a vortex of pressurized fluid is formed that may move around the sliver end 140 to sharpen or separate the sliver end, as described elsewhere.

[0106] Specifically, the nozzle body 220 may have a suction section 260. The suction section may form a laminar flow in the cavity 240 so as to draw the sliver end 140 into the cavity 240. The edge 286 may be designed to be inclined so as to discharge the laminar flow from the surrounding area as vortex-free as possible or to discharge the vortex into the surrounding area as vortex-free as possible. The groove 288 may be formed and arranged to arrange and screw the sleeve 230 onto the nozzle assembly 210 so as to arrange and fasten the insertable vortex nozzle 205 in the nozzle body 220. The pressurized fluid nozzle 280 may be incorporated into or arranged in a surface structure 289 so as to support vortex formation and support the pressurized fluid flow into the cavity 240. Specifically, the surface structure 289 itself may extend in the cavity 240 in a vortex shape.

[0107] like FIG. 3A to FIG. 3C As shown, the sliver end 140 can be formed by a single fiber 130. The sliver end 140 and its fibers 130 can be guided into the cavity 240 or can be pulled into the cavity 240 by suction along the suction direction 350 (see Figure 2 ). The suction force can be adjusted to be strong enough so that the fibers 130 are separated at a point between the suction section 310 of the feeder unit 300 and the suction nozzle 120 of the pick-up unit 110 (for the pick-up unit 110, this refers to the suction nozzle here, but other holders for picking up the sliver 135 can also be provided accordingly). As a result, a new sliver end 140a can be formed. The sliver 135 is held on the pick-up unit 110, in particular by means of a correspondingly strong back suction force. The cut fiber material (not shown) is transported away, in particular via the waste pipe 250 (see respectively Figure 2 or Fig. 9 ).

[0108] Alternatively or additionally, in particular after the cutting 520 of the old sliver end 140, the sliver end 140 may be temporarily sharpened 530 to form a sharpened sliver end 140b. In addition to the suction section 260, a pressurized fluid nozzle 280 may also be provided in the cavity 240. In particular, these pressurized fluid nozzles 280 may be arranged and oriented to produce a rotating pressurized fluid screw in the cavity 240. Due to the rotation of the pressurized fluid that may be induced in this way, the fibers 130 may be arranged conically in the suction direction (even without suction; in the direction of the rear of the cavity 240), and the sliver end 140 may taper conically toward the sharpened sliver end 140b. The rotation of the pressurized fluid may also cause the fibers 130 to twist relative to each other, which may increase the stability of the sliver end 140. Compressed air, dry air and / or nitrogen and mixtures thereof may be used as pressurized fluids.

[0109] As previously stated elsewhere, Figure 3BA new sliver is shown as sliver end 140, which after cutting can be temporarily reinserted into cavity 240 (if only slightly damaged, further separation can be omitted to save material) in order to produce compression and twisting of the fibers 130 towards the compressed sliver end 140 as a sharpened sliver end 140b, as shown in FIG. Figure 3C As shown, wherein the sharpened strip end 140b is from Figure 3C The cavity 240 in is removed.

[0110] Figure 5 An embodiment of a pick-up unit 110 is shown, which is arranged on a base plate 185 and has a swivel suspension 170 so as to be reversibly pivotable in a pivot direction 190 between two end positions. Figure 5 The shown orientation may be referred to as a transfer position, since the orientation direction 180 may be parallel to the main suction direction 350. In particular, the pick-up unit 110 rests firmly on the stop 155 in order to stabilize the position.

[0111] Instead, a pick-up position (not shown) may be provided for picking up sliver 135 from a can 630 which may in particular be arranged below the workstation 620, with which pick-up position the pick-up unit 110 may in particular be oriented substantially downwards, in particular vertically downwards.

[0112] The pick-up unit 110 may have a negative pressure sensor 160 that is specifically designed and arranged to perform sliver monitoring. The negative pressure sensor 160 is designed and arranged to monitor the negative pressure in the suction nozzle 120 of the pick-up unit 110 in order to initiate further sliver searches based on a threshold value. As a result, the pick-up unit 110 may determine whether a sliver 135 has been picked up, whether a sliver 135 has been lost, or whether the search should be continued.

[0113] Figure 6 4 shows a holding device 400a on a pick-up section 460 of a pre-compactor 445. The holding device 400a is provided for the strip 135. Specifically, the holding device 400a has a placement structure 420. Figure 6As shown, this placement structure can specifically be a placement hook. Alternatively, a placement eyelet or other structure that can at least partially place the strip 135 can also be provided. In addition, the placement structure 420 allows limiting the movement of the strip 135 transverse to the machine (transverse direction), that is, the movement outside the plane of the sheet, whereby the tension on the strip 135 may be limited. The tension can be caused by gravity on the one hand and by movement on the other hand. The placement structure 420 can be arranged on a plate-like bearing element formed as a front plate 440 through an anchoring structure 430. Alternatively, the placement structure can be a one-piece component that can also include a guide structure 410. According to this exemplary embodiment, the anchoring structure 430 is formed by a rod-like bearing element, which extends from the front plate 440 to the placement structure 420 in the strip conveying direction. The anchoring structure 430 can be fastened to the front plate 440 or formed integrally with the front plate by the same material.

[0114] Additionally or alternatively, a guide structure 410 can be provided, which can also form a sliver guide 446 from the pre-compactor 445 to the cover plate. As a result, the movement of the sliver 135 in the textile machine length direction (longitudinal direction; alternatively in the direction of the next workstation) from the front end to the rear end can be limited. In particular, before the sliver 135 is transferred from the feeder unit 300 to the pick-up section 460 of the pre-compactor 445, the sliver has been inserted into the holding device 400a.

[0115] Figure 7 An exemplary embodiment of a round barrel 720 is shown, which has a round barrel edge 710, which can be used as the upper boundary of the wall of the round barrel 720. The wall can form a round barrel outer surface 715 and a round barrel inner surface 725. The sliver 135 (not shown here) can be inserted into the round barrel 720, specifically in a spiral shape. As described elsewhere, the sliver 135 can be threaded into a sliver guide 446 in the form of a pick-up section 460 of a pre-compactor 445. As described in detail elsewhere, a holding device 400a can be arranged on the pre-compactor 445 to support the sliver 135 for pre-compacting. A triangle can be formed between the pick-up section 460, the lower point in the round barrel 720, and the outer radius point where the sliver 135 is picked up, the longest side of the triangle simulating the route of the sliver 135 entering the pre-compactor 445. A triangle can also be formed between the support area on the holding device 400a and the lower point in the can 720 and the outer radius at the point through the support area and the point where the sliver 135 is picked up. The angle in the support area on the holding device 400a can become larger (too large?), which is why the sliver 135 can slip off the holding device 400a. This can lead to tearing of the sliver 135, in particular from the spinning station 465, which can lead to the termination of the spinning process.

[0116] Figure 7Also shown is an RFID 632 arranged on the can 630, which contains readable information about the sliver material deposited in the can 630. A readout unit (not shown) for reading the information from the RFID 632 is arranged on the sliver feeder 100. The readout unit is designed to provide the readout information to an evaluation unit (not shown) for evaluation. The evaluation unit can be any unit suitable for evaluating information. The evaluation unit can be a component of the workstation 620, the textile machine 600, the sliver feeder 100, the service unit 900, or a unit arranged separately from them, to which the readout information is transmitted for evaluation and which can evaluate the readout information transmitted in any case. The stored and readable information can be information about the sliver material deposited in the can 630, which has been assigned to the workstation 620 for processing. Reading this information by the readout unit and providing this information to the evaluation unit makes it possible to check whether the correct sliver material has been assigned to the workstation 620 for the production of a predetermined line with a defined quality, for which material is required for this particular sliver. The evaluation unit is preferably communicatively connected to a control and / or regulating unit (not shown), which controls the sliver feeder 100 in a defined manner. In this way, when it is evaluated that wrong or incorrect sliver material for the production of a predetermined yarn has been distributed to the workstation 620 by the can 630, corresponding information can be provided by the evaluation unit of the control and / or regulating unit. Furthermore, the control and / or regulating unit is specifically designed to control the sliver feeder 100 taking this information into account, so that the sliver feeder 100 does not undertake the operation of feeding the sliver 135 from the can 630 to the spinning station 465 of the workstation 620. In this way, it can be avoided that the workstation 620 processes wrong or incorrect fiber material for the production of the predetermined yarn, whereby waste and erroneous production can be minimized.

[0117] Fig. 8A and Figure 8B An embodiment of another holding device 400b on a pre-compactor 445 is shown, wherein the other holding device 400b is connected to Figure 6 The holding device 400a shown differs substantially in that the further holding device 400b can be at least partially and at least temporarily closed. The holding device 400a together with the further holding device 400b can in each case be detachably fastened to a support frame of a textile machine 600 or to a workstation 620 of the textile machine 600 via locking devices 405, 415. As a result, the various embodiments of the holding devices 400a, 400b described can be designed to be interchangeable with one another. Fig. 8A A side view of another holding device 400b on a pre-compactor 445 with a pick-up section 460 is shown; Figure 8B A front view is shown.

[0118] In particular, the placement structure 420 is formed with a joint 425 so that the blocking device 435 can be rotatably arranged around the joint. In one state, the blocking device 435 can limit the lateral movement of the guided strip 135 to the side (in the front view). As a result, the strip 135 can specifically no longer slide laterally from the support area of ​​the other holding device 400b. The feeder unit 300 and / or the strip 135 can establish contact with the blocking device 435 during threading, wherein the feeder unit 300 and / or the strip 135 carried by the feeder unit 300 can cause the blocking device 435 to rotate around the joint 425, wherein the distance between the blocking device 435 and the guide structure 410 can be increased in order to thread the strip 135 into the other holding device 400b and the pre-compactor 445. After the strip 135 is released by the feeder unit 300 after threading, the blocking device 435 can return to the initial position (such as Fig. 8A and Figure 8B As shown), specifically, it automatically returns via a return spring arranged in the joint 425 to block the support area. As a result, the strip 135 can be prevented from sliding off, specifically when the round strip drum 720 is used.

[0119] Fig. 9 A schematic diagram of an exemplary embodiment of a service unit 900 is shown. Figure 1A The covers 612 shown are not shown in order to provide a deeper understanding of the structure behind these covers. Specifically, the service unit 900 has two legs 610 and a connecting structure 448 on which the legs 610 are arranged. A U-shape can be formed. As also described in detail elsewhere, the sliver feeder 100 is arranged below the connecting structure 448. Specifically, the aforementioned structure including the suction pipe 150, the stopper 155 and the suction nozzle 120 is arranged on one side of the leg, while the preparation device 201, specifically a preparation device having a vortex nozzle 205 (specifically designed as a separation nozzle 200), is arranged together with the nozzle body 220 on the other side of the leg. Their function and structure have been described elsewhere, and these annotations are referenced here.

[0120] The cavity 240 of the vortex nozzle 205 can be connected to the waste pipe 250 via the suction section 260 in particular. In particular, the cavity is connected to the flow section 915 in the leg 610 via the inlet opening 275 via the pipe system 450. The inlet opening 275 is specifically arranged in the partition wall 278. In particular, the partition wall 278 separates the flow section 915 in the leg 610. In particular, the flow section 915 is designed to guide the flow between the inlet opening 275 and the exhaust device 920. In particular, the filter 950 can be arranged in the flow section 915 so that the flow guided by the flow section 915 penetrates the filter to clean the fibers and fiber fragments in the flowing fluid. The filter 950 can be inserted into the filter holder 958 by the slide-in unit 955 so that the filter can be removed and thus replaced. The slide-in unit 955 can be inserted into the filter 950 at an angle of specifically between 20° and 70°, further specifically between 35° and 55°, further specifically 45° relative to the main flow direction and / or relative to the tangential direction of the leg 610 .

[0121] Fig.10 Schematically, a method 500 for picking up slivers in a textile machine 600 is shown. The method 500 may include the step of picking up 510 a sliver 135 by a picking unit 110, as described in detail elsewhere. The method 500 may include the step of transferring 540 the sliver 135, in particular the sliver end 140, from the picking unit 110 to a feeder unit 300, as described in detail elsewhere. The method may include the step of transferring 540 the sliver 135, in particular the sliver end 140, from the feeder unit 300 to a feeding section 462 of a spinning station 465 and / or a picking section 460 of a pre-compactor 445, as described in detail elsewhere.

[0122] The method 500 may include the step of sliver monitoring. The negative pressure sensor 160 may monitor the negative pressure and initiate further sliver searches based on a threshold value, as described in detail elsewhere, specifically see Figure 5 .

[0123] The method 500 may include a step 520 of cutting off the previous sliver end 140 to form a new sliver end 140a, as previously described with reference to FIG. 3A to FIG. 3C The method may include a step 530 of sharpening the sliver end 140 to form a sharpened sliver end 140b, as described with reference to Figure 3C Detailed description.

[0124] Independent of the previous description of the method 500, a method 500 may be provided which may include the step of cutting off 520 the previous strip end 140 to form a new strip end 140a, as previously described with reference to FIG. 3A to FIG. 3C The method 500 may include a step 530 of sharpening the sliver end 140 to form a sharpened sliver end 140b, as described with reference to Figure 3C Detailed description.

[0125] The method 500 may further include the step of inserting into the holding device 400a, 400b, specifically the holding device 400a, as shown in reference Figure 6 The slivers 135 for transfer 540 to the feeding section 462 of the spinning station 465 and / or the pick-up section 460 of the pre-compactor 445 may be placed on the placement structure 420 of the holding device 400a, as described with reference to Figure 6 Alternatively or additionally, the strip 135 may be inserted into the guide structure 410 of the holding device 400a, as described with reference to Figure 6 described.

[0126] As in Figure 1A and Figure 1B The textile machine 600 shown by way of example in the drawings and described with respect to these figures may include a textile machine as shown in reference Figure 2 The sliver feeder 100 described herein. In addition, the textile machine 600 may be designed and constructed to perform the reference Fig.10 The method described.

[0127] Fig.11A An exemplary structural image of an embodiment of the picking unit 110 in the picking step 510 is shown (see also Fig.10 ). Specifically, pick up the sliver 135 stored in the can 630. Specifically, the can 630 is arranged in the can area 1100. The can 630 may have a can edge 1110 located between the can inner wall 1120 and the can outer wall 1115. Specifically, the sliver 135 may be placed on the can edge 1110. Specifically, the suction pipe 150 of the pick-up unit 110 points downward to pick up the sliver 135. Suction may be formed via the suction nozzle 120 of the pick-up unit 110 to suck in the sliver 135.

[0128] exist Fig. 11B , a preparation step is shown as an exemplary structural embodiment, in which a cut-off 520 of the sliver end 140 is to be performed. In the preparation step, the pick-up unit 110 can be brought into position, in particular a horizontal position, by moving the pick-up unit 110 upwards to the stop 155. The pick-up unit 110 can be moved towards the preparation device 201 described elsewhere, in particular the vortex nozzle 205 and / or the separation nozzle 200, until the suction in the suction section 260 of the cavity 240 of the vortex nozzle 205 sucks in the sliver end 140. This results in the cut-off of the sliver end 140. As a result, a new sliver end 140a can be formed, wherein the sliver residue 131 in particular remains in the cavity 240 and can be removed through the cavity.

[0129] The sliver end 140 is cut off 520 in particular by a suction force into the cavity 240 pulling a part of the sliver end 140 into the cavity 240, while the pick-up unit 110 can be moved further away from the swirl nozzle 205 in a particularly horizontal position. The sliver 135 is separated in the region of the sliver end 140. As a result, a new sliver end 140a can be formed, such as Fig. 11C As shown. The sliver residue 131 can be retained in the cavity 240. Specifically, this sliver residue 131 can be processed via a pipe system 450, which is connected to the cavity 240 in a communicating manner. A waste pipe 250 can also be formed. As shown in reference Fig. 9 As described, the exhaust device 920 can also be operated for processing the sliver residues 131 and for applying negative pressure to form suction.

[0130] exist Fig.11D , the sharpening method step 530 is shown as an exemplary structural embodiment. Then, the feeder unit 110 can be moved back toward the preparation device 201 in order to insert the (new) sliver end 140a into the cavity 240 by suction of the suction section 260 of the vortex nozzle 205 (see Figure 4 As described elsewhere, the swirl of the pressurized fluid flow in the swirl nozzle 205 causes the sliver tip 140 to be sharpened into a sharpened sliver tip 140b.

[0131] exist Fig.11E , the method steps for stripping the sharpened sliver end 140b are shown as an exemplary structural embodiment. Then, the mobile feeder unit 110 can be moved away from the preparation device 201 again to move the sharpened sliver end 140b out of the cavity 240. Specifically, the feeder unit 300 can be moved in front of the sharpened sliver end 140b so as to suck in the sharpened sliver end 140b by suction. When the sliver 135 is transferred to the picking device 460, the rotating mechanism 480 can move the feeder unit 300, such as Fig.11F The diameter of the suction section 310 of the feeder unit 300 may be smaller than the diameter of the suction section 310 of the pickup unit 110, which may save installation space.

[0132] Fig.11FThe feeder unit 300 is shown arranged in a transfer position. The rotation mechanism 480 can be formed by an assembly 1140, which can perform a rotation of the object by about 180° at the joint 1130. The rotation can be realized between 100° and 200°, in particular between 150° and 190°. The feeder unit 300 can be arranged on the assembly 1140 via a joint 1155 on the assembly 1140 so that the feeder unit 300 is also moved. It can be provided that the feeder unit 300 can be moved in coordination with the assembly 1140. As a result, a coordinated movement around the above-mentioned angle and / or angle range is achieved. In an embodiment, it can also be provided that each of the two devices can move a corresponding angle and / or angle range.

[0133] In particular, the feeder unit 300 is connected to the suction line 1150. As a result, a suction flow can be achieved at the suction section 310 of the feeder unit 300, whereby the slivers 140 can be piped into the feeder unit 300, as described elsewhere.

[0134] exist Fig.11F In particular, it is shown that the strip 135 is threaded from the strip can 630 designed as a rectangular strip can here. After the feeder unit 300 takes over the strip 135 from the pick-up unit 110, the strip 135 can be threaded into the pick-up device 460, which forms a strip guide 446 in the pre-compactor 445.

[0135] "Can" refers specifically to an optional feature of the invention. Therefore, there are also refinements and / or exemplary embodiments of the invention which additionally or alternatively have one or more corresponding features.

[0136] From the combination of features disclosed in the present case, separate features may also be adopted and used as desired, in combination with other features for defining the subject matter of the claims, by resolving structural and / or functional relationships that may exist between the features.

[0137] Reference numerals list

[0138] 100 Sliver Feeder

[0139] 110 Pickup unit

[0140] 120 nozzle

[0141] 130 Fiber

[0142] 131 Strip Remnants

[0143] 135 Strip

[0144] 140 Strip End

[0145] 140a The end of the new strip formed after the previous strip end is cut off

[0146] 140b Sharpened end of strip

[0147] 150 Suction tube

[0148] 155 Stopper

[0149] 160 Negative pressure sensor

[0150] 170 Swivel Suspension

[0151] 180 Maintain orientation

[0152] 185 Base plate

[0153] 190 Pivot Direction

[0154] 200 Separation Nozzle

[0155] 201 Prepare equipment

[0156] 205 Swirl Nozzle

[0157] 210 Nozzle Assembly

[0158] 220 Nozzle body

[0159] 230 Sleeve

[0160] 240 Cavity

[0161] 250 Waste pipe

[0162] 260 Suction section

[0163] 270 Screw

[0164] 275 Entrance Opening

[0165] 278 Partition Wall

[0166] 280 Pressurized Fluid Nozzles

[0167] 282 Orifice

[0168] 284 outer wall

[0169] 286 Edge

[0170] 288 Grooves

[0171] 289 Surface structural parts

[0172] 290 Screw

[0173] 300 Feeder Unit

[0174] 310 Suction section

[0175] 320 Suction tube

[0176] 340 Feeder unit holder

[0177] 350 (Main) Suction direction

[0178] 360 Pivot Arm

[0179] 365 Mobile

[0180] 400a Holding Equipment

[0181] 400b Another holding device

[0182] 405 Locked Device

[0183] 410 Boot Structure

[0184] 415 Lock device

[0185] 420 Place Structure

[0186] 425 Connector

[0187] 430 Anchorage Structure

[0188] 435 Blocking Device

[0189] 440 front panel

[0190] 445 Pre-compactor

[0191] 446 Strip guide

[0192] 448 Connection structure

[0193] 450 pipe system

[0194] 452, 454, 456 pipe sections

[0195] 460 Pick-up section of pre-compactor

[0196] 462 Feeding section of spinning station

[0197] 465 Spinning Station

[0198] 480 Rotating Mechanism

[0199] 500 Methods

[0200] 510 Picking up sliver from can

[0201] 520 Extraction and cutting of fuse / strip ends

[0202] 525 Cut edges to shorten image

[0203] 530 Sharpening the end of the strip

[0204] 540 Transferring slivers to the pick-up section of the pre-compactor

[0205] 600 Textile Machines

[0206] 610 Legs

[0207] 612 Cover

[0208] 614 Connection structure

[0209] 620 Workstations

[0210] 630 cans

[0211] 632 RFID

[0212] 640 Observation Groove

[0213] 642 Observation Window

[0214] 710 Round can edge

[0215] 715 Outer surface of round barrel

[0216] 720 Round Bar

[0217] 725 Inner surface of round barrel

[0218] 800 Bobbin Winding

[0219] 810 Cross-wound Bobbin

[0220] 900 service units

[0221] 910 Filter Points

[0222] 915 Flow Section

[0223] 920 Exhaust Equipment

[0224] 950 Filters

[0225] 955 Slide-in unit

[0226] 958 Filter Holder

[0227] 1100 Can area

[0228] 1110 Can edge

[0229] 1115 Outer wall of can

[0230] 1120 inner wall of drum

[0231] 1130 Connector

[0232] 1140 Components

[0233] 1150 Suction line

[0234] 1155 Connector

Claims

1. A sliver feeder (100) for a textile machine (600), the sliver feeder comprising: - at least one pick-up unit (110); and - at least one feeder unit (300); It is characterized in that The picking unit (110) is designed and arranged to pick up slivers (135), specifically from the sliver drum of the textile machine (600), and transfer the slivers to the feeder unit (300), wherein the feeder unit (300) has a connecting pipe section and is designed and arranged to transfer the slivers (135) to a sliver guide (446), specifically to a picking section (460) of a pre-compactor (445).

2. The sliver feeder (100) according to claim 1, characterized in that: The feeder unit (300) is designed to take over the sliver (135), in particular the sliver end (140), from the pick-up unit (110) in one station, wherein the take-over section of the feeder unit (300) is designed as a suction section (310) and is oriented parallel to the holding orientation (180) of the pick-up unit (110) so as to suck in the sliver (135), in particular the sliver end (140), in particular in a manner of directly taking over the sliver (135) or the sliver end (140).

3. The sliver feeder (100) according to one of the preceding claims, characterized in that The feeder unit (300) is designed to perform a movement so as to transfer the sliver (135) to a pick-up section (460), specifically the pick-up section of a pre-compactor (445), or to a feeding section (462) of a spinning station (465), wherein the sliver (135) experiences a curvature during the transfer, specifically when being transferred to the feeding section of the spinning station (465), further specifically when being transferred to a rotor or jet spinning station.

4. The sliver feeder (100) according to one of the preceding claims, characterized in that At least one preparation device (201), in particular a rotating nozzle (205), further in particular at least one separation nozzle (200), is designed and arranged to pick up a sliver end (140) from the pick-up unit (110) and to prepare the sliver end for transfer to the feeder unit (300), wherein at least one of the following functions can be performed by the preparation device (201): - cutting off (520) the sliver end (140) to form a new sliver end (140a); or - sharpening (530) the sliver end (140) to form a sharpened sliver (140b).

5. The sliver feeder (100) according to one of the preceding claims, characterized in that The pick-up unit (110) and / or the feeder unit (300) has a negative pressure sensor (160) for monitoring the slivers, wherein the negative pressure sensor (160) is designed and arranged to monitor the negative pressure in the pick-up unit (110) or the feeder unit (300) so as to initiate a further sliver search based on a threshold value.

6. The sliver feeder (100) according to one of the preceding claims, characterized in that A holding device (400a, 400b) for the strip (135) is provided, in particular arranged on the pick-up section (460) of the pre-compactor (445), wherein the holding device (400a, 400b) comprises at least one of the following: - placing structures (420), in particular placing hooks or placing eyelets; - a guiding structure (410); and an at least partially movable blocking device (435) arranged and designed such that, in a first state, the placement structure (420) is blocked for removal of the strip (135) and, in a second state, the placement structure (420) is made accessible for insertion of the strip (135); Wherein, the feeder unit (300) is designed to insert the strip (135) into the pick-up section (460) via the blocking device (435), specifically into the pick-up section (460) of the pre-compactor (445), so as to transfer the strip (135) from the feeder unit (300) to the placement structure (420).

7. A nozzle body (220) formed for a sliver feeder (100), in particular according to one of the preceding claims, wherein: The nozzle body (220) comprises a swirl nozzle (205), characterized in that the swirl nozzle (205) is formed to be arranged in the nozzle body (220), or wherein the swirl nozzle (205) is arranged in the nozzle body (220) to pick up a sliver end (140) from a pick-up unit (110) of the sliver feeder (100) and prepare to transfer the sliver end to a feeder unit (300) of the sliver feeder (100), wherein the swirl nozzle (205) has a At least one pressurized fluid nozzle (280) is used to feed a pressurized fluid flow into the cavity (240) of the vortex nozzle (205), wherein the pressurized fluid nozzle (280) is designed and arranged to generate a pressurized fluid flow vortex in the cavity (240) by means of the pressurized fluid flow feeding, whereby the picked-up strip end (140) is cut off (520) to form a new strip end (140a); or the strip end (140) is sharpened (530) to form a sharpened strip end (140b).

8. A service unit (900) having a sliver feeder (100) according to one of claims 1 to 6, characterized in that A pick-up unit (110) for picking up a section of a sliver (135) and an introduction device with a suction section (260) are arranged on the service unit (900), the pick-up unit and the introduction device being assigned to one another in such a way that a sliver section with a sliver end (140) of the sliver (135) picked up by the pick-up unit (110) is at least temporarily and at least partially sucked into the suction section (260) of the introduction device, wherein the flow section (915) is arranged downstream of the suction section (260) in the service unit (900) and is designed to form a suction flow at the suction section (260) of the introduction device, wherein at least one, specifically replaceable, filter (950) is arranged in the flow section (915).

9. A method (500) for picking up sliver in a textile machine (600), characterized in that Follow these steps: - picking up (510) a section of the sliver (135) by means of a picking unit (110); - transferring the slivers (135) from the pick-up unit (110) to a feeder unit (300); and - Transferring (540) the slivers (135) from the feeder unit (300) to a pick-up section (460) of a pre-compactor (445).

10. The method (500) according to claim 9, characterized in that Follow these steps: - Sliver monitoring, wherein a negative pressure sensor (160) monitors the pick-up unit (110) and / or negative pressure in the feeder unit (300) and initiates further sliver searches based on a threshold value.

11. The method (500) according to claim 9 or 10, characterized in that At least one of the following steps: - cutting off (520) the sliver end (142) to form a new sliver end (140a); or - sharpening (530) the sliver end (142) to form a sharpened sliver end (140b)。 12. The method (500) according to one of claims 9 to 11, characterized by the following steps: - inserting the strip (135) into a holding device (400a, 400b), in particular a holding device (400a) according to claim 6, wherein The strip (135) is placed on a placement structure (420) of the holding device (400) and / or inserted into a guide structure (410) of the holding device (400a) and is thus transferred (540) to the pick-up section (460) of the pre-compactor (445).

13. A textile machine (600), characterized in that: The textile machine has at least one of the following devices: - A sliver feeder (100) according to one of claims 1 to 6; - a nozzle body (220) according to claim 7; and - a service unit (900) according to claim 8; and / or Therein, the textile machine (600) is designed and constructed to carry out the method (500) according to one of claims 9 to 12.

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