EP3885298A1 - Textile machine producing cross-wound bobbins and method for operating a textile machine for creating cross-wound bobbins - Google Patents

Abstract

The invention relates to a textile machine (1) producing cross-wound bobbins with a large number of identical work stations (2) which are arranged in the area of the longitudinal sides of the textile machine (1) and each have a winding device (4) and which is equipped with a tube delivery device (30), which comprises a central tube magazine (15) and at least one tube conveyor belt (16) installed in the area of the longitudinal sides of the machine, with a cheese (7) being removable from the winding device (4) of the relevant work station (2) on the textile machine (1) producing cheese and can be transferred to a machine-length cheese transport device (14) and, by means of a tube gripper (20), an empty tube (9), which is provided on the tube conveyor belt (16) of the tube delivery device (30), into the winding device (4) of the work station concerned (2 ) is interchangeable. The tube delivery device (30) is designed in such a way that the tube conveyor belt (16) can be used as a tube store (34) for empty tubes (9) during operation of the textile machine (1) producing cross-wound bobbins. In order to improve the efficiency of such a textile machine producing cross-wound bobbins, in particular To significantly minimize the tube delivery times that arise when changing yarn batches on a textile machine producing cheese cross-wound bobbins, the invention provides that a drive (35) is connected to the at least one tube conveyor belt (16), which enables reversible operation of the tube conveyor belt (16).

Description

The invention relates to a textile machine producing cross-wound bobbins with a large number of identical workstations, which are arranged in the area of the machine longitudinal sides of the textile machine and each have a winding device, and with a tube delivery device, which has a central tube magazine, preferably arranged at the end of the machine, and at least one in the area of the machine longitudinal sides comprises installed tube conveyor belt, wherein on the textile machine producing cross-wound bobbins preferably at least one service unit is movably arranged, which, if necessary, a cross-wound bobbin, the z. B. has reached a predetermined diameter, removed from the winding device of the job in question and transferred to a machine-length cross-wound bobbin transport device and, by means of a tube gripper, an empty tube, which is provided on one of the tube conveyor belts of the tube delivery device, changes into the winding device of the workplace concerned, the The tube delivery device is designed so that the at least one tube conveyor belt can be used as a tube store for empty tubes during the operation of the textile machine producing cross-wound bobbins, or a method for operating such a textile machine.

Textile machines producing cross-wound bobbins, which preferably have a large number of identical workstations on both longitudinal sides of the machine and which have a tube delivery device for empty tubes, have long been known in various embodiments and are sometimes described in great detail in the patent literature.

In the DE 44 02 143 A1 For example, an open-end rotor spinning machine is described which has two rows of work stations running in the longitudinal direction of the machine and a transport device for cross-wound bobbins and / or empty tubes arranged between the rows of work stations. The transport device consists of a large number of interconnected, revolving individual transport elements, each of which has a transport surface for transporting a cross-wound bobbin completed at the work stations or an empty tube required at the work stations.

A comparable transport device, which is also arranged between the rows of workstations of an open-end rotor spinning machine, is also in the DE 44 43 818 B4 described. However, this known transport device is designed in such a way that a cheese and an empty tube can be conveyed on it at the same time.

Through the DE 199 05 856 A1 Furthermore, open-end rotor spinning machines are known which have a transport device for transporting away finished cross-wound bobbins and a separate tube delivery device for providing fresh empty tubes. The tube delivery device comprises a tube magazine arranged at the end of the machine and two machine-length tube conveyor belts arranged on the longitudinal sides of the textile machine above the work stations. The workplaces of such open-end rotor spinning machines are supplied by an automatically operating service unit which, among other things, has a memory for an empty tube. In this known device, the service unit requests a new empty tube from the tube magazine after a cheese / empty tube change, which tube is then delivered via one of the tube conveyor belts.

Like the tube delivery devices, the service units of such open-end spinning machines can also have various embodiments.

For example, service units have been known for a long time which are designed as so-called piecing wagons. Such service units are particularly active when a job has to be re-spun after a thread break. Such service units are, however, also active when a package change / empty tube change is pending at one of the work stations. The known service units accordingly have various devices that are used either in connection with the re-piecing of a job or when changing cross-wound bobbins / empty tubes. However, the service units of open-end spinning machines can also, for example, in the DE 10 2017 129 700 A1 described, be designed as a cleaner and changer trolley.

Such cleaning and changer trolleys are usually used in open-end spinning machines that have largely self-sufficient workplaces. As is known per se, such largely autarkic jobs have, in addition to an open-end spinning device for producing a thread and a winding device for making a cheese, further functional elements that enable the jobs to automatically start again immediately after a thread break. This means that self-sufficient workplaces only need the help of a mobile service unit when there is a job has to be cleaned, or if a package / empty tube change is due at one of the workstations, which also requires a new piecing thread.

In the case of a cheese / empty tube change, which is known to be necessary when the cheese has reached a specified diameter at one of the workstations and has to be replaced with a new empty tube, a so-called work order is placed by the affected workstation, whereupon the cleaner and The changer trolley drives to this job and positions itself in front of the job. The affected work area also requests an empty tube from the tube magazine arranged at the end of the machine, which is transported via one of the tube transport tracks of the tube delivery device to the cleaning and changer trolley or to the affected work area.

The cleaner and changer trolley, which has meanwhile transferred the finished cheese from the package frame of the respective work station to a machine-length cheese transport device of the textile machine, waits for the requested empty tube and changes it into the coil frame of the work station upon receipt. For this purpose, the cleaner and changer trolley has a tube gripper with which the delivered empty tube can be removed from the tube transport track and placed in the bobbin frame of the work station. The cleaner and changer trolley then ensures that the open-end spinning device of the work site is re-spun using a so-called auxiliary thread and that the thread freshly made in the open-end spinning device is placed on the empty tube that was previously replaced in the bobbin frame.

The disadvantage of this known method, however, is that the relevant tube conveyor belt must be free before each new empty tube request, i.e. a new empty tube request is only processed when the tube conveyor belt is no longer blocked by an empty tube that is still traveling.

In addition, with the known method, the pure transport time of an empty tube is often relatively long, for example, because the requesting job is located relatively far away from the tube magazine, which is often the case because it is useful in the sense of a high economic efficiency of such textile machines that The number of jobs per open-end rotor spinning machine should be selected as large as possible.

As a result, the tube throughput in this known method is often relatively low.

Another disadvantage of the known method is that the efficiency of such textile machines is usually considerably reduced when a yarn section runs out in a block on a textile machine producing cross-wound bobbins, ie. i.e. if z. B. all jobs on a longitudinal side of the machine are finished at the same time and want to restart accordingly at the same time. Since the tube supply takes significantly longer than the cleaner and changer trolley needs to process the workplaces, unnecessary waiting times occur. As already indicated above, such waiting times have an overall negative effect on the efficiency of such open-end spinning machines.

In order to shorten the transport times of the empty tubes in textile machines producing long cross-wound bobbins, a method or a device has therefore already been developed in the past which works with an intermediate store. In the DE 10 2004 012 254 B4 For example, an open-end spinning machine or a method is described in which an open-end spinning machine is equipped with a tube delivery device, the tube conveyor belts of which are each divided into two length sections. Between the two length sections of the tube conveyor belts, an empty tube retaining device is connected in each case, which forms an intermediate store. By means of this empty tube retaining device, the transport path of an empty tube is to be shortened and thus the supply of a job with a fresh empty tube is to be accelerated.

the DE 28 16 418 A1 discloses a tube conveyor belt running around a spinning machine, which can store empty tubes. This is to avoid a time delay in the delivery of empty tubes to the spinning stations. Nevertheless, in the worst case, especially when changing a lot, an empty tube has to be transported around the entire textile machine once. In addition, the concept leads to very long conveyor belts, since the conveyor belt must be at least twice the machine length. Due to the stretching of the conveyor belt during operation, the greater the length of the conveyor belt, the worse the accuracy of the positioning of the sleeves in front of the spinning stations.

In the textile machine industry, it has long been the state of the art in connection with the network of several textile machines that run in so-called multi-part operation, the different yarn parts for the operating personnel by z. B. to make differently colored bobbin tubes recognizable.

It is known both to identify roving bobbins by colored, reusable bobbin tubes, and to wind spinning cops onto colored, likewise reusable spinning cops. Such reusable sleeves are usually made of a stable plastic and colored in a single color.

In order to automatically ensure a reliable differentiation of such sleeves during machine operation, sensor devices are often used in such composite systems, which are designed, for example, as color sensors. Such commercially available color sensors can distinguish up to eight different sleeve colors. The use of such color sensors has proven itself in practice in connection with reusable, single-colored roving tubes or reusable, single-colored spinning-head tubes. Such color sensors cannot, however, be used when it comes to differentiating sleeves that are not embodied in a monochrome multi-color, but rather have other characteristic features. Such "disposable" sleeves, which are usually made of cardboard at low cost, have, for example, a pattern on the surface of the sleeve or a specific print which identifies a specific thread section.

A method and apparatus for identifying such "disposable" sleeves is e.g. B. in the DE 10 2007 057 921 A1 described. The known device has a CCD camera for creating an image of the bobbin and a light source, a digital image processing device being connected to the CCD camera. In the image processing device, the image of the bobbin tube to be identified is checked for characteristic features and compared with images of already classified bobbin tubes that are stored in a memory. If the characteristic features of the image of the bobbin case match one of the images of an already classified bobbin case, the bobbin case to be checked is deemed to have been identified.

Furthermore, it is z. B. by the EP 0 593 808 A1 known to arrange identification markings in the form of electronic information carriers, so-called transponders, on textile spools or their sleeves. These intrinsically passive electronic transponders can be activated electromagnetically via sensor devices to emit an individual identifier, which is read into a storage and evaluation unit.

Proceeding from the aforementioned prior art, the invention is based on the object of further improving the known tube delivery devices, in particular the aim of the a textile machine producing cheeses, when changing cheeses / empty tubes and / or changing yarn batches, tube delivery times can be minimized.

According to the invention, this object is achieved in that a drive is connected to the at least one tube conveyor belt which enables the tube conveyor belt to operate in a reversible manner.

Advantageous configurations of the device according to the invention and the method according to the invention are / is the subject of the subclaims.

The invention can in principle be applied to all textile machines producing cross-wound bobbins. These are in particular open-end spinning machines, e.g. B. rotor spinning machine and air-jet spinning machine, but also winding machines.

The inventive design and use of the tube conveyor belt or the tube conveyor belts of the tube delivery device of the textile machine producing cross-wound bobbins has the advantage that the transport routes of the empty tubes to the work stations are greatly shortened in this way. This means that the tube conveyor belts can be controlled in such a way that one of the empty tubes stored on the tube conveyor belts can immediately be transferred quickly and as required to a requesting work station and inserted there into the bobbin frame of the work station in question by a movable service unit positioned at the work station or by facilities at the work station can be.

Particularly when changing yarn batches, the simultaneous function of the tube conveyor belts as a transport and storage device ensures a quick and reliable supply of the workplaces with empty tubes in a simple manner, which has a very positive effect on the efficiency of the textile machine producing cross-wound bobbins.

According to the invention, it is provided that drives are connected to the tube conveyor belts which enable the tube conveyor belts to be operated in a reversible and precise manner. In this way it is ensured that the delivery path of the empty tubes is optimized and thus the delivery times of the empty tubes that occur during the operation of the textile machine are very short for all workplaces of the textile machine.

Means for blocking the empty tubes are preferably assigned to a tube conveyor belt. As a result, only the empty tube is to be blocked, whereas the tube conveyor belt continues to be driven. In this way, gaps on the tube conveyor belt that arise when empty tubes are removed from the tube conveyor belt for changing into the winding device of a work station can be closed again. These means are preferably arranged at one end of the tube conveyor belt. When an empty tube has reached the end of the tube conveyor belt, the tube conveyor belt is first driven further in the corresponding direction. This pushes the empty tubes together on the tube conveyor belt and closes any gaps. Then there are free positions for empty tubes at the other end of the tube conveyor belt. By reversing the drive of the tube conveyor belt, the free positions can then be filled again by a central tube magazine preferably arranged at the other end of the tube conveyor belt.

The drives are preferably designed as stepper motors, since such stepper motors are tried and tested, inexpensive mass-produced components. In addition, stepper motors are also relatively uncomplicated in terms of their control and can therefore be implemented inexpensively.

In a further advantageous embodiment, a plurality of empty tubes can be stored on the tube conveyor belt or the tube conveyor belts of the tube delivery device during operation of the textile machine.

Workplaces are preferably arranged on both machine longitudinal sides of the textile machine. In such a textile machine, there are preferably two tube conveyor belts arranged in the area of the two longitudinal machine sides of the textile machine. This means that a tube conveyor belt is preferably assigned to each longitudinal side of the machine. The length of the conveyor belt then corresponds at most to the length of the textile machine.

The empty tubes stored on one of the tube conveyor belts are designed identically if all the work stations on the associated longitudinal side of the machine produce the same yarn section. That is, if on all work stations of a machine longitudinal side of a textile machine producing cross-wound bobbins, bobbins of the same yarn section are produced, only empty tubes of the type required for this yarn section are located on the associated tube conveyor belt. These identical empty tubes stored on the tube conveyor belt are stored by the service unit or the work stations for sure recognized and, if necessary, can be quickly fed to each of the work stations on this longitudinal side of the machine.

In a further embodiment, when different yarn sections are manufactured on the work stations of a longitudinal side of the machine, different empty tubes are also stored on the associated tube conveyor belt. The empty tubes are marked for each party.

Such a party-specific identification of the empty tubes can be made, for example, by a specific coloring of the empty tubes, or by virtue of the fact that the empty tubes have a special pattern.

In a further, alternative embodiment it is provided that the empty tubes are each equipped with an RFID transponder which has a party-specific identifier. Using the identification of such RFID transponders, a proper, party-specific assignment of the empty tubes is possible in a simple manner.

In a further advantageous embodiment, the service unit or the work stations are equipped with a tube recognition device which, depending on the design or equipment of the empty tube that has to be recognized, is designed either as a color sensor or CCD camera or as an RFID reader. Such tube detection devices are known both in general mechanical engineering and in the textile machine industry and are in use in practice.

The service unit or the work stations also preferably have a tube gripper which is designed so that it can properly pick up an empty tube from the tube conveyor belt and transfer it into the reel frame of the winding device of a work station. That is, the tube gripper is designed in such a way that, regardless of the direction from which the empty tube is delivered by the tube conveyor belt, it can stop the empty tube, remove it from the tube conveyor belt and change it to the bobbin frame of the job in question.

The method according to the invention for operating a textile machine producing cross-wound bobbins, which is preferably operated by a service unit and has a tube delivery device with a reversible, precisely drivable tube conveyor belt, which during operation of the textile machine producing cross-wound bobbins large parts of their length can be used as tube storage for a large number of empty tubes, has the advantage that the transport routes of the individual empty tubes and thus the waiting times of the service unit or the work station can be minimized. This means that by activating a tube conveyor belt as required, empty tubes can be transferred quickly and easily to workplaces that are to be requested and placed there in the reel frame of the workplaces in question.

According to the invention, the tube conveyor belt is reversed if necessary. In this way, the closest, matching empty tube can be supplied to the requesting work station as quickly as possible, regardless of the position of the empty tube in relation to the work place. The tube conveyor belt can also be reversed when the tubes have reached the end of the tube conveyor belt.

Further details of the invention can be found in an exemplary embodiment explained below with reference to the drawings.

Fig. 1

in perspektivischer Ansicht eine Offenend-Spinnmaschine mit einer Vielzahl von Arbeitsstellen, einem maschinenendseitig angeordneten Hülsenmagazin, einer Hülsenliefereinrichtung, die auf beiden Maschinenlängsseiten jeweils ein Hülsentransportband aufweist, wobei die Hülsentransportbänder so ausgebildet und ansteuerbar sind, dass auf ihnen jeweils eine Vielzahl von Leerhülsen bevorratbar ist,

Fig. 2

in Seitenansicht eine autarke Arbeitsstelle einer Offenend-Rotorspinnmaschine mit einem vor der Arbeitsstelle positionierten Reiniger- und Wechslerwagen,

Fig. 3

schematisch in Draufsicht eine Offenend-Spinnmaschine mit einer Hülsenliefereinrichtung, deren Hülsentransportbänder als Hülsenspeicher fungieren.

It shows:

Fig. 1

a perspective view of an open-end spinning machine with a large number of work stations, a tube magazine arranged at the end of the machine, a tube delivery device which has a tube conveyor belt on each of the two longitudinal sides of the machine, the tube conveyor belts being designed and controllable in such a way that a large number of empty tubes can be stored on them,

Fig. 2

a side view of a self-sufficient work station of an open-end rotor spinning machine with a cleaning and changer trolley positioned in front of the work station,

Fig. 3

a schematic plan view of an open-end spinning machine with a tube delivery device, the tube conveyor belts of which act as tube stores.

the Figure 1 shows a textile machine producing cross-wound bobbins, in the exemplary embodiment an open-end spinning machine 1, which has a tube delivery device which can be used in the manner according to the invention. As is known, such open-end spinning machines 1 between end frames on a plurality of identical work stations 2 arranged on both machine longitudinal sides of the textile machine 1.

In the present embodiment, the workplaces are designed as self-sufficient workplaces 2, that is, the workplaces 2 are each equipped with an open-end spinning device 3, a winding device 4 and a suction nozzle 29 that can be subjected to negative pressure. During the spinning / winding operation of the textile machine 1, the work stations 2 are supplied by service units 5; in the exemplary embodiment by two identically designed cleaner and changer carriages. The service units 5, guided on guide rails 17, 18, can be moved at least along the work stations 2 of a machine longitudinal side of the open-end spinning machine 1.

As is known, in the open-end spinning devices 3 of the work stations 2, slivers that are stored in sliver cans 6 are spun into threads, which are then wound up on the winding devices 4 of the work stations 2 to form cross-wound bobbins 7. The winding devices 4 are for this purpose, as in Figure 2 shown, each equipped with a bobbin frame 8 for rotatably holding an empty tube 9 or a cheese 7, a winding drum 10 for properly rotating these elements and a thread traversing device 24.

The open-end spinning machine 1 also has a central control unit 11 which is connected via a bus system 12 both to the control devices 19 of the service units 5 and to the control devices 13 of the work stations 2.

Furthermore, such open-end spinning machines 1 have a cross-bobbin transport device 14 for disposing of finished cross-wound bobbins 7 and a tube delivery device 30, which essentially consists of a central tube magazine 15 arranged at the end of the machine and tube conveyor belts 16.

The tube conveyor belts 16 can during the spinning / winding operation of the open-end spinning machine 1, as in FIG Figure 3 also function as a tube store 34, that is, a plurality of empty tubes 9 can be constantly stored on the tube conveyor belts 16 during the spinning / winding operation of the open-end spinning machine 1.

The cleaner and changer trolleys 5 are, as in Figure 2 shown schematically and z. B. in the DE 44 43 818 B4 described in relative detail, each on guide rails 17, 18, which are arranged at or on the open-end spinning machine 1, can be moved along the work stations 2 and, if necessary, positioned at one of the work stations 2. The cleaner and changer trolleys 5 each have different handling devices that enable the service units to clean a work station if necessary or to carry out a cross-wound bobbin / empty tube change at a work station 2.

Such service units 5 are, for example, with a highly schematically illustrated device 21 for cleaning the open-end spinning devices 3, an auxiliary thread delivery device 22 for providing a piecing thread 25, a pivotably mounted thread delivery tube 28 and with a thread application and thread transfer device 23 equipped, among other things, via a so-called (not shown) bobbin frame opener has. The auxiliary thread delivery device 22 is preferably equipped with a supply spool 27 and a thread delivery mechanism 26 which, if necessary, pulls the piecing thread 25 from the supply spool 27.

Furthermore, such cleaning and changer trolleys 5 with an in Figure 2 only schematically shown sleeve gripper 20 equipped. By means of the tube gripper 20 can, if necessary, an empty tube 9 from one, the z. B. as a tube storage 34 acting tube conveyor belts 16 and transferred to the reel frame 8 of the work station 2.

According to an advantageous embodiment, the tube gripper 20 is designed in such a way that it properly receives from the tube conveyor belt 16 an empty tube 9 that is ready or delivered on the tube conveyor belt 16, regardless of the transport direction R or L in which the empty tube 9 is delivered Can transfer the coil frame 8 of the job 2.

The cleaner and changer trolley 5 is advantageously also equipped with a tube detection device 31, which is arranged, for example, in the area of the gripping device of the tube gripper 20. The tube detection device 31 is adapted to the design of the empty tubes 9 that are to be identified, for. B. designed as a color sensor or as an RFID reader.

Figure 3 shows a schematic plan view of an open-end spinning machine 1, which has a plurality of identical, preferably self-sufficient work stations 2 and which is equipped with a tube delivery device 30, the tube conveyor belts 16 of which during the Spinning / winding operation of the open-end spinning machine 1 can also function as a tube store 34.

As can be seen, the tube delivery device 30 has a tube magazine 15 arranged at the end of the machine with a tube distribution device 37 and two machine-length tube conveyor belts 16 which can be driven reversibly or reversibly by means of electric drives 35. The electric drives 35, for example stepping motors, are connected to the central control unit 11 of the open-end spinning machine 1. As already indicated above, the tube conveyor belts 16 can also function as tube storage 34 during the spinning / winding operation of the textile machine, which means that the tube conveyor belts 16 loaded with a large number of empty tubes 9 can be reversible either as required, as indicated by the double arrows 38 Running direction R or drivable in running direction L, so that empty tubes 9 stored on them can be conveyed in the shortest possible time, regardless of the location of a requesting job 2. The associated service unit 5 is also positioned at the relevant work station 2 and changes the present or delivered empty tube 9 into the reel frame 8 of the work station 2.

Function of the device according to the invention or the method according to the invention:

At the beginning of the spinning / winding process of the open-end spinning machine 1 and / or before a yarn lot change, the tube conveyor belts 16 of the tube delivery device 30 are first loaded with a large number of empty tubes 9 of the yarn section that are on the work stations 2 of the respective Long side of the machine is being processed or is to be processed soon.

If there is a need for action at one of the work stations 2 during the spinning / winding process of the open-end spinning machine 1, e.g. if a package / empty tube change is due, this is signaled by the work station 2, that is, the work station 2 in question sets, as in Figure 3 indicated by the lightning symbol 39, a work order to the central control unit 11 of the open-end spinning machine 1 from. The central control unit 11 for its part then notifies a service unit 5, in the present exemplary embodiment a cleaner and changer trolley, which immediately runs to the relevant work station 2 and positions itself. That is, as soon as the service unit 5 is notified via the bus system 12 of the open-end spinning machine that there is a work order at one of the work stations 2, for example because of the Workstation 2, the cheese 7 has reached a predetermined diameter and has to be exchanged for an empty tube 9, the service unit 5 runs to the relevant workstation 2, positions itself there and conveys the finished cheese 7 to a cheese transport device. In practice, after the bobbin frame 8 of the bobbin winder 4 has been opened, the service unit 5 transfers the completed cheese 7 to the cheese transport device 14 of the open-end spinning machine 1 by means of an ejector and drive arm.

At the same time, the tube conveyor belt 16 equipped with a large number of empty tubes 9 is controlled in such a way that a new empty tube 9 is conveyed to the relevant work station 2 as quickly as possible. The service unit 5 stops with its tube gripper 20, regardless of the delivery direction, then the tube gripper 20 takes the empty tube 9 from the tube conveyor belt 16, on which there are usually numerous other empty tubes 9, and changes them into the reel frame 8 of the work station 2.

While the cheese transport device 14 of the textile machine 1 conveys the finished cheese 7 to a transfer point arranged at the end of the machine, an auxiliary thread delivery device 22 of the cleaner and changer carriage 5, as is known per se, provides a piecing thread 25 which is fed by a thread delivery mechanism 26 from a supply bobbin 27 is withdrawn and pneumatically transferred via a pivotably mounted delivery pipe 28 into the area of a workstation's own suction nozzle 29 which sucks in the thread end. The delivery tube 28 then conveys the piecing thread 25 into the area of the thread laying and threading device 23, which in turn brings the piecing thread 25 into the area of the empty tube 9 held in the bobbin frame 8 of a work station 2.

In the meantime, the free end of the piecing thread 25 has also been transferred from the suction nozzle 29 to a workstation's own piecing element (not shown) which prepares the thread end as usual.

The piecing process is then started by means of the prepared piecing thread 25 and the spinning thread freshly produced in the open-end spinning device 3 is applied to the empty tube 9 held in the bobbin frame 8 and subjected to rotation by the winding drum 10.

List of reference symbols

1 Open-end spinning machine 22nd Auxiliary thread delivery device 2 place of work 23 Thread application and 3rd Open-end spinning device Thread traversing device 4th Winding device 24 Thread traversing device 5 Cleaning and changer trolleys 25th Thread 6th Spinning can 26th Yarn feeder 7th Cross-wound bobbin 27 Supply spool 8th Coil frame 28 Thread delivery tube 9 Empty tube 29 Suction nozzle 10 Winding drum 30th Tube delivery device 11 Central control unit 31 Sleeve detection device 12th Bus system 34 Case storage 13th Control device 35 Electric drive 14th Package transport device 36 RFID transponder 15th Case magazine 37 Sleeve distribution device 16 Core conveyor belt 38 Double arrow 17th Guide rail 39 Work order 18th Guide rail 19th Control device L. Transport direction 20th Shell gripper R. Transport direction 21 Cleaning facility

Claims (12)

Textile machine (1) producing cross-wound bobbins with a large number of identical workstations (2) which are arranged in the area of the longitudinal sides of the textile machine (1) and each have a winding device (4), and a tube delivery device (30) which has a central tube magazine ( 15) and at least one tube conveyor belt (16) installed in the area of the longitudinal sides of the machine, with a cheese (7) on the textile machine (1) producing cross-wound bobbins, which can be removed from the winding device (4) of the relevant work station (2) and placed on a cross-wound bobbin -Transport device (14) can be transferred and, by means of a tube gripper (20), an empty tube (9), which is provided on the at least one tube conveyor belt (16) of the tube delivery device (30), can be exchanged into the winding device (4) of the affected work station (2) , wherein the tube delivery device (30) is designed such that the at least one tube conveyor belt (16) can be used as a tube store (34) for empty tubes (9) during operation of the textile machine (1) producing cross-wound bobbins,
characterized in that
to which at least one tube conveyor belt (16) is connected a drive (35) which enables reversible operation of the tube conveyor belt (16). Textile machine (1) producing cross-wound bobbins according to claim 1, characterized in that a plurality of empty tubes (9) can be stored on the tube conveyor belt (16) during operation of the textile machine (1). Textile machine (1) producing cross-wound bobbins according to Claim 2, characterized in that the empty tubes (9) stored on one of the tube conveyor belts (16) are each designed identically. Textile machine (1) producing cross-wound bobbins according to Claim 2, characterized in that a large number of empty tubes (9) are stored on a tube conveyor belt (16), which are to be assigned to different yarn sections. Textile machine (1) producing cross-wound bobbins according to one of Claims 2 to 4, characterized in that the empty tubes (9) stored on the tube conveyor belts (16) are labeled for each party. Textile machine (1) producing cross-wound bobbins according to Claim 5, characterized in that the empty tubes (9) identified for specific parties have a certain color or a special pattern. Textile machine (1) producing cross-wound bobbins according to Claim 5, characterized in that the empty tubes (9) are each equipped with an RFID transponder (36) which has a party-specific identifier. Textile machine (1) producing cross-wound bobbins according to one of the preceding claims, characterized in that the textile machine (1) has a tube detection device (31) for changing a suitable empty tube (9) into the winding device (4) of a work station (2). Textile machine (1) producing cross-wound bobbins according to Claim 8, characterized in that the tube detection device (31) is designed as a color sensor (32). Textile machine (1) producing cross-wound bobbins according to Claim 8, characterized in that the tube recognition device (31) is designed as an RFID reader (33). Textile machine (1) producing cross-wound bobbins according to one of the preceding claims, characterized in that the tube gripper (20) is designed in such a way that, regardless of the respective delivery direction (R or L) of the empty tube (9), it is properly removed from the tube conveyor belt ( 16) and can transfer it into the bobbin frame (8) of the winding device (4) of a work station (2). Method for operating a textile machine (1) producing cross-wound bobbins, which has a large number of identical work stations (2) arranged in the area of the longitudinal sides of the textile machine (1), each of which is equipped with a winding device (4), and which is provided with a tube delivery device (30 ), which comprises a central tube magazine (15) and at least one tube conveyor belt (16) installed in the area of the longitudinal sides of the machine; if necessary, a package (7) is transferred from the winding device (4) of the relevant work station (2) to a machine-length package transport device (14) and then by means of a tube gripper (20) an empty tube (9), which is on the at least one tube conveyor belt (16) of the tube delivery device (30) is provided into which the winding device (4) of the affected work station (2) changes, with a plurality of tubes on the at least one tube conveyor belt (16) during operation of the textile machine (1) producing cross-wound bobbins Empty tubes (9) are stored,
characterized in that
the tube conveyor belt (16) is reversed if necessary.

Images