EP4122854A1 - Textile machine and method for operating a textile machine - Google Patents

Abstract

The invention relates to a method for operating a textile machine (1) with a plurality of work stations (2) which are designed to wind a yarn (3) onto a bobbin tube (5), a changing device (6) which can be moved along the work stations (2) being provided is designed to receive an empty bobbin tube (5), to transport it and to insert it into a bobbin holder (7) of a work station (2). It is proposed that the changing device (6), after a changing process in which it has inserted an empty bobbin tube (5) into a bobbin holder (7) of a work station (2), moves to another work station (2) and there from a work station's own Bobbin magazine (8) receives another empty bobbin tube (5), which in turn is provided for a subsequent changing process. The invention also relates to a textile machine (1) for carrying out the method.

Description

The present invention relates to a method for operating a textile machine with a plurality of work stations which are designed to wind a yarn onto a bobbin tube, a changing device which can be moved along the work stations being provided and which is designed to receive and transport an empty bobbin tube and place it in a bobbin holder employ a job. In addition, the invention relates to a textile machine with a plurality of workstations which are designed to wind a yarn onto a bobbin tube, with a changing device being provided which can be moved along the workstations and is designed to receive an empty bobbin tube, to transport it and to insert it into a bobbin holder of a workstation. wherein the work stations each have a winding tube magazine.

Automatic textile machines, in particular spinning or winding machines, have been known for a long time. They are used, for example, to wind yarn from individually wound spinning tubes, which come, for example, from a ring spinning machine, onto bobbin tubes, so that larger bobbins or cross-wound bobbins are formed. This is necessary because the spinning tubes usually contain relatively little yarn due to the machine. Such textile machines usually have a large number of work stations at which rewinding processes or spinning and winding processes take place largely independently of one another. During a rewinding process, the yarn from individual spinning tubes is joined by a so-called splicer to form a single continuous yarn. It is also known that fully loaded bobbin tubes are automatically exchanged for empty bobbin tubes. For this purpose, the textile machine can have a changing device which, for example, patrols along the work stations and, if necessary, inserts an empty bobbin tube into a bobbin holder at a work station. For this purpose, empty bobbin tubes can, for example, be removed from the bobbin tube magazines of the workplace.

the EP 2 179 954 A2 proposes, for example, a method for inserting a bobbin tube, in which the changing device, after inserting a bobbin tube at a work station, removes another empty bobbin tube from a bobbin tube magazine of this job. Here, however, the state of the bobbin tube magazine is not taken into account as long as there is an empty bobbin tube.

It is therefore the object of the present invention to improve the known method and to propose a textile machine which is designed to carry out the improved method.

The task is solved by a method and a textile machine with the features of the independent patent claims.

The method according to the invention is intended for operating a textile machine, the textile machine having a plurality of work stations which are designed to wind a yarn from a bobbin tube onto a bobbin tube. A changing device that can be moved along the work stations is provided on the textile machine and is designed to receive an empty bobbin tube, to transport it and to insert it into a bobbin holder of a work station. It is proposed that the changing device, after a changing process in which it has inserted an empty bobbin tube into a bobbin holder at a job, travel to another job and there pick up another empty bobbin tube from a bobbin tube magazine belonging to the job, which in turn is provided for a subsequent changing process .

In this way, the changing device for receiving an empty bobbin tube can select a job whose bobbin tube magazine is advantageously filled with bobbin tubes. This advantageous filling can, for example, a filling level of the winding tube magazine or a type of winding tubes in the concern bobbin magazine. The filling levels of the bobbin case magazines can thus be kept at a relatively constant level, for example. This makes it easier for operators, for example, to refill the bobbin case magazine.

The changing device can, for example, perform a changing process at a first job, then move to a second job, pick up an empty bobbin tube from the bobbin tube magazine of the second job and then move to a third job to carry out the next changing process there.

It is also conceivable that the changing device is set up to remove a fully wound bobbin tube from the bobbin holder of a work station and to deposit it, for example, on a transport device. The empty bobbin tube can then be inserted into a bobbin holder by the changing device.

The method according to the invention is particularly suitable for spinning or winding machines, a yarn being produced, for example, from a fiber structure in a spinning machine and then wound up onto a winding tube. In a winding machine, for example, a yarn is unwound from a spinning tube, which is produced in particular by a spinning machine, and wound onto a winding tube.

It is advantageous if a filling level of the bobbin tube magazines of the jobs is recorded and stored. In this way it can be determined which bobbin tube magazine is approached by the changing device for receiving the empty bobbin tube. It can also be ensured, for example, that no time is lost by approaching a bobbin tube magazine without bobbin tubes. In addition, it can be determined at what point in time a bobbin case magazine has to be refilled. Next to the fill level For example, the type of bobbin tubes can also be monitored if different types of bobbin tubes are used on the textile machine.

In this context, it is advantageous if the fill level is detected by a sensor device of the changing device and/or the winding tube magazine. If the fill levels are only monitored by the changing device, sensor devices on the winding tube magazines can be saved, for example. If the fill levels at the winding tube magazines are detected, the fill levels can advantageously be monitored at any time. Any sensor that can detect the presence of an object at a specific location is suitable as a sensor device. For example, a light sensor or a camera would be conceivable.

There are particular advantages when the changing device carries out reference runs along the work sites to record the filling level. In this way, for example if the bobbin tube magazines have no sensor device, the filling level of the bobbin tube magazines can be updated even if no changing process is carried out. During a reference run, the changing device can, for example, travel through all work stations on one side of the machine or just a specific group. In particular, a section of the work sites can be covered. It is conceivable that the reference runs are combined with other tasks of the changing device. For example, the reference runs can be used to transport bobbin tubes from bobbin tube magazines with a higher filling level to bobbin tube magazines with a lower filling level. Certain types of bobbin tubes, for example, can also be better distributed over the length of the textile machine.

Furthermore, it is advantageous if a reference run through the elapse of a time interval, an input from an operator and / or through a determined discrepancy between a stored and a detected filling level of a winding tube magazine is triggered. In this way it can be ensured that the filling level of the winding tube magazine is updated as required. If the reference runs are carried out as a function of a time interval, and a changeover process is carried out when the time interval has expired, the reference run can be postponed, for example, to the end of the changeover process. A discrepancy between a stored and a detected filling level of a bobbin tube magazine can occur, for example, when the bobbin tube magazine is refilled by an operator. For example, the reference run can be triggered by an input immediately after a bobbin case magazine has been filled by an operator.

There are also advantages if work stations with a higher level of filling in the bobbin tube magazine are prioritized for receiving further empty bobbin tubes by the changing device. This ensures that the bobbin cases of the bobbin case magazines are used up evenly. It is thus less likely that there will be no bobbin tubes available in a certain area of the textile machine when required. With this prioritization, consideration can also be given, for example, to how far away a bobbin tube magazine with a high filling level is from a work station at which a current changing process is pending. Ideally, a bobbin case magazine of a job is selected that has a high fill level and a short distance from the job where the next changing process takes place.

It is particularly advantageous if, when using different types of bobbin tubes on the textile machine, a bobbin tube of the type that is expected to be required for the next changing process is selected by the changing device for receiving it. The pending change process can be predicted, for example, by monitoring the diameter of the wound bobbin tubes, ie the bobbins. Fitting A bobbin tube type can be selected according to a specific yarn type. The types of bobbin tubes can differ in terms of shape or material, for example. The type can be selected, for example, by a central control of the textile machine.

There are also advantages if, if the changing device transports a bobbin tube that is unsuitable for the next changing process, the unsuitable bobbin tube is placed in a bobbin tube magazine and a bobbin tube that is suitable for the next changing process is removed from the bobbin tube magazine or another bobbin tube magazine. It can thus be ensured that a suitable winding tube is available for the next changing process.

If it is determined before or at the start of the changing process that an unsuitable bobbin tube is present in the changing device, the changing device can move to a job at which there is a matching bobbin tube in the bobbin tube magazine. The unsuitable bobbin tube can first be put down there and then the matching bobbin tube can be picked up. However, it is also conceivable for the unsuitable bobbin tube to be put down and the matching bobbin tube to be picked up at different work stations or bobbin tube magazines. In this case, for example, a first work station is first approached by the changing device and the unsuitable bobbin tube is deposited there. A second job is then approached, in whose bobbin magazine there is a suitable bobbin tube. There, the matching bobbin tube is picked up by the changing device. The next change process is then carried out, for example, at a third work station.

It is also advantageous if several bobbin tubes, in particular bobbin tubes of different types, are transported by the changing device. This can possibly eliminate the need to find a suitable bobbin tube before changing, which saves time. It is also conceivable here that the changing device, depending on requirements, receives a plurality of bobbin tubes from a bobbin tube magazine or places a number of bobbin tubes in a bobbin tube magazine.

It is also advantageous if, when there is a high volume of changes, no bobbin tube is transported through the changing device and instead the bobbin tube for the changing process is removed directly from the work station’s own bobbin tube magazine, with jobs with an empty bobbin tube magazine initially being ignored by the changing device. The aim is to make the changing processes as efficient as possible in order to minimize downtimes on the textile machine. After all changing operations have been carried out at jobs with filled bobbin tube magazines, the changing operations can then be carried out at jobs with empty bobbin tube magazines by first removing suitable bobbin tubes from other bobbin tube magazines.

There are particular advantages when the changing device transports bobbin tubes from bobbin tube magazines with a high filling level to bobbin tube magazines with a low filling level. The filling level of the bobbin tube magazines along the textile machine can thus be equalized, so that the probability of no bobbin tubes being available in a certain area of the textile machine is reduced. This transport of bobbin tubes can be carried out, for example, during the reference runs already described. The transport can also be carried out when no change processes are currently being carried out or are imminent. It is conceivable, for example, that the transport of bobbin tube magazines, which have a fill level of more than 50%, to bobbin tube magazines, which have a fill level of less than 50%, takes place.

There are also advantages if an empty bobbin magazine is indicated by a signal. The empty bobbin case magazine can thus be refilled promptly, for example by an operator. In particular, the signal can be acoustic or visual. For example, the signal can be output by a warning light or, in particular, by a warning message on the display device of a control unit. The signal preferably indicates which of the winding tube magazines has been emptied. It is therefore advisable that, for example, a display unit is provided at each work station, or that the display device of the control unit shows which bobbin tube magazine is affected.

The textile machine according to the invention with several workstations designed to wind a yarn onto a bobbin tube has a changing device that can be moved along the workstations and is designed to receive an empty bobbin tube, transport it and insert it into a bobbin holder of a workstation. The work stations of the textile machine each have a bobbin tube magazine. The textile machine is characterized by a controller that is designed to operate the textile machine according to the method described above. As already described, the consumption of the bobbin tubes on the textile machine can be advantageously controlled in this way.

The textile machine is preferably designed as a spinning or winding machine, with a spun yarn in particular being wound onto the winding tube in the spinning machine. In the winding machine, in particular, a yarn is unwound from a spinning tube and wound onto the winding tube.

It is particularly advantageous if the at least one controller is arranged in the changing device or centrally in the textile machine. The controller can, for example, be integrated into a central controller of the textile machine, with the central controller also taking over the control of the work stations, for example. On the other hand, it can be advantageous if the controller is arranged in the changing device, since in the event of a failure of the controller in this case, for example, only the changing device is affected. In addition, other systems of the changing device can form an integrated circuit with the controller, for example.

It is also advantageous if the changing device and/or the bobbin tube magazines have a sensor device for detecting the filling level of the bobbin tube magazines. As already described, if each of the bobbin tube magazines has a sensor device, the fill level of the bobbin tube magazines can be monitored at any time. However, this requires the installation of numerous sensors in the textile machine. If only the changing device has a sensor device, the fill level cannot be monitored at all times, but ideally only one sensor is necessary to monitor the bobbin tube magazine. A sensor device both in other bobbin case magazines and in the changing device ensures redundancy and thus greater reliability of the recorded data. In addition, a failure of a sensor device can be compensated in this way. Any sensor that can detect the presence or absence of an object at a specific location is conceivable for the sensor device. In particular, the sensor device can be designed as an optical sensor, in particular a light sensor or camera, or for example as a touch sensor.

It is also advantageous if the at least one controller is connected to a memory for storing the filling level of the bobbin tube magazines. Advantageously, data on the filling levels of the various winding tube magazines are available at all times. This allows the use of the bobbin tubes to be planned most efficiently. Any data memory known from electronic data processing is suitable for this. A semiconductor memory is particularly suitable for fast writing and reading.

Figur 1

eine schematische Seitenansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Textilmaschine, und

Figur 2

eine schematische Seitenansicht eines zweiten Ausführungsbeispiels der erfindungsgemäßen Textilmaschine.

Further advantages of the invention are described in the following exemplary embodiments. It shows:

figure 1

a schematic side view of a first embodiment of the textile machine according to the invention, and

figure 2

a schematic side view of a second embodiment of the textile machine according to the invention.

In the following description of the figures, the same reference symbols are used for features that are identical and/or at least comparable in the various figures. The individual features, their design and/or mode of action are usually only explained in detail when they are first mentioned. If individual features are not explained in detail again, their design and/or mode of action corresponds to the design and mode of action of the features already described that have the same effect or have the same name.

figure 1 shows a schematic side view of a first embodiment of the textile machine 1 according to the invention. In this example, the textile machine 1 is designed as a winding machine. One side of the machine is shown with a large number of work stations 2 which are designed to unwind a yarn 3 from a spinning tube 4 and to wind it onto a winding tube 5 . The textile machine 1 has a changing device 6 which can be moved along the work stations 2 . The changing device 6 is designed to receive an empty bobbin tube 5 and insert it into a bobbin holder 7 .

Each of the jobs 2 has a winding tube magazine 8 in which winding tubes 5 can be stored. The changing device 6 is designed to remove bobbin tubes 5 from the bobbin tube magazines 8 of the work stations 2 and possibly to deposit bobbin tubes 5 in the bobbin tube magazines 8 . In this exemplary embodiment, each bobbin tube magazine 8 also has a sensor device 9 which is designed to detect the filling level of the respective bobbin tube magazine 8 .

The operation of the changing device 6 is controlled by a central controller 10 of the textile machine 1 . The controller 10 is connected to a memory 11 in which the filling levels of the winding tube magazines 8 are stored.

The controller 10 is designed in particular to control the changing device 6 according to the method described below. For example, complete winding of a bobbin tube 5 is reported to the controller 10 by one of the work stations 2 . The changing device 6 already provided with an empty bobbin tube 5 is driven to this job 2 . The completely wound bobbin tube 5 at the work station 2 is removed from the bobbin holder 7. This can be carried out by the changing device 6 or by an additional device provided at the work station 2 . The changing device 6 then uses the empty bobbin tube 5 carried along in the bobbin holder 7 of the job 2 . An advantageously filled bobbin tube magazine 8 from another job 2 is then selected and the changing device 6 is moved to this other job 2 in order to pick up another empty bobbin tube 5 from its bobbin tube magazine 8 . The changing device 6 is then ready for another changing process.

The changing device 6 can, for example, also transport bobbin tubes 5 from bobbin tube magazines 8 with a high filling level to bobbin tube magazines 8 with a low filling level in order to equalize the filling levels of the bobbin tube magazines 8 overall.

The work stations 2 can in particular have the further features for the winding process described below. The work stations 2 have, in particular, a splicer 12 which is designed to capture and join yarn ends. For the feeding of yarn ends to the splicer 12, the work stations 2 have, in particular, means for locating and detecting 13, 14 yarn ends. These means can be designed, for example, as a first pivotable suction tube 13 and as a second pivotable suction tube 14 . The first pivotable suction tube 13 is designed in particular to capture a yarn end that has run onto the bobbin tube 5 . The second pivotable suction pipe 14 is designed in particular to grasp a yarn end from a spinning tube 4 . In order to maintain a specific yarn tension, the work stations 2 also have a yarn tensioner 15 .

For a controlled unwinding of the yarn 3 from the spinning tube 4, the work stations 2 have a balloon limiter 16, for example. For the winding of cross-wound bobbins, the work stations 2 also have a laying element 17, which in the present example is designed as a grooved drum.

figure 2 shows a second embodiment of the textile machine 1 according to the invention in the same view as in FIG figure 1 . The work stations 2 essentially have the same features as in the first exemplary embodiment. An important difference is that the bobbin case magazines 8 do not have any sensor devices 9 in this example. Instead, the changing device 6 is provided with a sensor device 9 . The sensor device 9 of the changing device 6 is designed to detect the filling level of the winding tube magazines 8 of the work stations 2 . It is conceivable that this detection takes place while the changing device 6 is passing the work stations 2 . Likewise, the changing device 6 can detect the fill level during a changing process at a work station 2 .

In this exemplary embodiment, the controller 10 , which is designed to operate the textile machine 1 and in particular the changing device 6 according to the method according to the invention, is arranged in the changing device 6 . Likewise, the memory 11, in which the filling levels of the winding tube magazines 8 are stored, is arranged in the changing device 6 and is connected to the controller 10.

The present invention is not limited to the illustrated and described embodiment. Modifications within the scope of the patent claims are just as possible as a combination of features, even if they are shown and described in different exemplary embodiments.

Reference List

1

textile machine

2

place of work

3

yarn

4

spinning tube

5

bobbin case

6

changing device

7

spool holder

8th

bobbin magazine

9

sensor device

10

steering

11

Storage

12

splicer

13

first swiveling suction pipe

14

second swiveling suction tube

15

Yarn Tensioner

16

balloon limiter

17

laying element

Claims (15)

Method for operating a textile machine (1) with several work stations (2) which are designed to wind a yarn (3) onto a bobbin tube (5), wherein a changing device (6) which can be moved along the work stations (2) is provided, which is designed is to pick up an empty bobbin tube (5), to transport it and to insert it into a bobbin holder (7) at a work station (2),
characterized in that the changing device (6), after a changing process in which it has inserted an empty bobbin tube (5) into a bobbin holder (7) of a workstation (2), travels to another workstation (2) and there from a bobbin sleeve magazine belonging to the workstation (8) receives another empty bobbin tube (5), which in turn is provided for a subsequent changing process. Method according to the preceding claim, characterized in that a filling level of the bobbin tube magazines (8) of the work stations (2) is detected and stored. Method according to the preceding claim, characterized in that the filling level is detected by a sensor device (9) of the changing device (6) and/or the bobbin tube magazine (8). Method according to the preceding claim, characterized in that the changing device (6) carries out reference runs along the work stations (2) in order to detect the filling level. Method according to the preceding claim, characterized in that a reference run by a lapse of a time Interval, an input from an operator and/or a discrepancy determined between a stored and a detected level of a bobbin tube magazine (8) is triggered. Method according to one of the preceding claims, characterized in that work stations (2) with a higher fill level of the bobbin tube magazine (8) are prioritized for receiving further empty bobbin tubes (5) by the changing device (6). Method according to one of the preceding claims, characterized in that when using different types of bobbin tubes (5) on the textile machine (1) of the changing device (6) for receiving a bobbin tube (5) of the type is selected, which is expected for the next change operation is required. Method according to the preceding claim, characterized in that if the changing device (6) transports a bobbin tube (5) that is unsuitable for the next changing process, the unsuitable bobbin tube (5) is deposited in a bobbin tube magazine (8) and a suitable one for the next changing process Bobbin tube (5) is removed from the bobbin tube magazine (8) or another bobbin tube magazine (8). Method according to one of the preceding claims, characterized in that several winding tubes (5), in particular winding tubes (5) of different types, are transported by the changing device (6). Method according to one of the preceding claims, characterized in that the changing device (6) transports bobbin tubes (5) from bobbin tube magazines (8) with a high filling level to bobbin tube magazines (8) with a low filling level. Method according to one of the preceding claims, characterized in that an empty bobbin magazine (8) is indicated by a signal. Textile machine (1) with a plurality of work stations (2) which are designed to wind a yarn (3) onto a bobbin tube (5), a changing device (6) which can be moved along the work stations (2) being provided and which is designed to hold an empty picking up a bobbin tube (5), transporting it and inserting it into a bobbin holder (7) of a workstation (2), the workstations (2) each having a bobbin tube magazine (8),
characterized by at least one controller (10) which is designed to operate the textile machine (1) according to a method of the preceding claims. Textile machine (1) according to the preceding claim, characterized in that at least one controller (10) is arranged in the changing device (6) or centrally in the textile machine (1). Textile machine (1) according to Claim 12 or 13, characterized in that the changing device (6) and/or the bobbin tube magazines (8) have a sensor device (9) for detecting a filling level of the bobbin tube magazines (8). Textile machine (1) according to one of Claims 12 to 14, characterized in that the at least one controller (10) is connected to a memory (11) for storing the filling level of the bobbin tube magazines (8).

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