EP2810907B1 - Method for adjusting a rotation angle position of a winding frame that can hold a pivoting winding and coil-producing textile machine with multiple coil positions - Google Patents

Description

The invention relates to a method for setting a rotational angular position of a coil frame rotatably supporting a coil on winding units of a spool producing textile machine.

Moreover, the invention relates to a spool-producing textile machine having a plurality of winding units, each of which comprises a spool frame rotatably supporting a spool, a drive roller for driving the spool, and a stepping motor for adjusting a rotational angular position of the spool frame.

From the prior art, it is known at a winding unit of a coil forth textile machine to adjust a coil frame relative to a drive roller or the like rotatably, in particular during a coil travel through a corresponding angular position always an optimal operative connection between a rotatably supported in the coil frame coil and coil to adjust the drive roller.

For example, from the published patent application DE 199 62 296 A1 a winding machine having a plurality of winding units is known in which an operator operable means for adjusting a drive element and thus a coil frame to adapt to a diameter of a coil to be used in the coil remaining coil are provided in order to use residual coils of larger diameter in the coil frame can. Although it is possible by means of the aforementioned operable means that the coil frame can be manually moved by means of a rotation angle adjustment in a position which corresponds approximately to the diameter of the currently inserted residual coil. However, only approximately the exact position of the coil frame can be considered here.

The DE 40 22 777 A1 discloses a method for producing a cheese and a winding device for carrying out the method which are intended to solve the problems of avoiding damage to the thread and changes in the thread layer and to obtain complete freedom in setting the crossing angle and the Spoolverhältnisses without the advantage lose, the contact of the winding roller with the cross-wound bobbin with respect to a laying of the thread in cross-layers offers. This object is achieved in that the cross-wound bobbin and the winding roller are driven individually and that the pressure forces occurring at the contact line between the cheese and the winding roller are kept so low that the occurring between the bobbin surface and the surface of the winding roller at different peripheral speeds Slip only harmlessly causes large frictional forces.

It is an object of the invention to improve a setting behavior between a creel and a drive roller at a winding unit of a generic bobbin-producing textile machine.

The object of the invention is achieved by a method for setting a rotational angular position of a coil holder rotatably holding a coil frame winding units of a spool producing textile machine, wherein at the winding units a basic rotation angle position of the coil frame is adjusted by the coil frame in a desired position with a target Distance between the creel and the drive roller moves in and thereby an actual position of the creel with an actual distance between the creel and the drive roller is generated, that the actual distance is measured with a distance measuring device and that at a deviation between the measured Actual distance and the target distance value, a correction value is determined, which is used in a critical deviation for a subsequent winding process for adjusting the creel with respect to the drive roller.

For example, the creel is shifted from a zero axis into the desired position. This target position can be targeted and adjusted by starting, starting from a zero position, the predetermined angular steps take place, which passes through the coil frame on its way from its zero axis to the desired position. Structurally simple, this can be done for example by means of a pole wheel, an incremental encoder, a stepper motor or the like. In this desired position is between the creel and the drive roller, the actual distance, which is compared with the set distance to be set in order to detect any difference may be present.

Should such a difference be present, this can be taken into account in the next coil travel, for example in the form of an adapted angular incremental number, in order to be able to adjust the coil frame accordingly adapted to the drive roller. Ideally, the corresponding correction value is temporarily stored.

The inventive method is preferably carried out after a first installation, after a change of bobbin tubes with other bobbin tube dimensions, after a restart in the event of a power failure or the like, to easily recalibrate the winding units again. After a power failure but it may be sufficient to approach only the zero axis with the coil frame to determine its position.

According to a first aspect of the present invention, it is possible by means of this method according to the invention to eliminate, in a technically particularly simple manner, construction-state-related sources of error, such as mechanical tolerances with regard to individual components or component groups of the winding unit. As a result, the quality of the coil to be produced can be substantially improved. So far, in particular mechanical tolerances, which can also change more or less in the course of the operating time of the spool producing textile machine, not detected and therefore not be taken into account in the settings of the coil frame relative to the drive roller.

According to a second aspect of the present invention, in particular, a contact force changing between the spool and the drive roller as a function of the spool diameter can be set much more accurately.

Specifically, a mechanical interaction, so also a contact force, between the coil and the drive roller can be set much more accurate in the present case, especially during a spool trip, which ultimately also significantly improves the quality of the coil to be produced. This is particularly advantageous in the context of image winding zones in the wild winding of cheeses, since in the region of such image winding zones a slip between a coil and the drive roller is generated in order to achieve a picture disturbance. This slip is often generated by a reduction of the bearing force, wherein the bearing force is modulated by means of a corresponding relative displacement of the creel with respect to the drive roller. In this respect, the bearing force is adjusted purposefully over the coil frame motor.

So far, in particular, an adjustment of such a bearing force between the drive roller and a coil or the coil frame is usually carried out via a pure control, such as by means of a stepper motor / spring-unit combination. However, this control can not take sufficient account of construction-state-related sources of error without the present adjustment method.

According to a third aspect of the present invention, the winding unit can advantageously be calibrated if the actual distance has been converted by the correction value into a corrected actual distance. This is especially true in terms of variety at existing winding units of a suitably equipped textile machine advantageous because all winding units can be readjusted extremely effective and in no time. Thus, at least during a directly subsequent coil travel of the coil frame relative to the drive roller can be set much more precise, whereby also the quality of the coil to be produced is substantially increased.

Ideally, the actual distance already corresponds to the desired nominal distance. If this is the case, then a coil travel at the respective winding unit can be started directly without corrective measures.

The object of the invention is also achieved by a spool-forming textile machine having a plurality of winding units each comprising a spool frame rotatably supporting a spool, a drive roller for driving the spool, and a setting motor for adjusting a rotational angular position of the spool frame, each of the winding stations comprising a distance measuring device , by means of which a distance between the creel and the drive roller is measurable, and the bobbin fabric making machine a computing means for determining the correction value from the measured actual distance and the target distance value between the creel and the drive roller and a control means for displacing the creel between an actual position and a desired position in dependence on a determined correction value.

By means of the present coil producing textile machine, the inventive method can be advantageously carried out.

The term "drive roller" describes a rotatable drive element which can be brought into contact with the coil or the bobbin tube in order in particular to be able to drive the bobbin by friction on its circumference. This drive roller is often referred to as a drive drum. Ideally, the drive roller immediately has a sweeping thread in order to be able to wind a thread along the coil width onto the coil or onto a coil sleeve. In this respect, can be dispensed with an additional Fadenchangiereinrichtung and thus by means of such a drive roller structurally simple cross-laying of the running on the coil thread can be achieved.

The spool-producing textile machine is preferably a cross-spooling machine, by means of which a cross-spooling process is carried out for producing cross-wound bobbins.

When winding cross-wound bobbins, a distinction is basically made between two types of winding, namely the precision winding and the wild winding, with which cross-wound bobbins can be wound.

Especially in the winding type wild winding, it is disadvantageous if the turns ratio hyperbolic decreases and in certain Windungsverhältnisbereichen in which the turns ratio assumes, for example, an integer value, so-called images or mirrors may occur at the cross-wound bobbin. In such image winding zones, the threads lie in successive layers of turns one above the other or very close together. These images cause the cross-wound bobbin in these areas is compressed higher, so that, for example, when dyeing uneven coloration can occur. In addition, there is a risk that the successive and / or critically close juxtaposed thread areas laterally slip on each other and can jam each other, which is very detrimental to the flow characteristics of a cheese.

To avoid such image wrapping zones, numerous methods and devices have hitherto been developed. For example, there are methods in which a desired slip between the coil and the drive roller is selectively generated in the region of an image winding zone, in order thereby to achieve a picture disturbance. How such a slip is generated is already described at the beginning.

In any case, such a desired slip can be generated much more targeted and narrowed more precisely to an image winding zone when the contact forces between the spool and the drive roller can be set more accurately. And the latter can be achieved in particular with the present method.

In particular, the actual distance can be measured between different reference points, for example between a suitable measuring point of a frame of the creel and the lateral surface of the drive roller. A measurement result achieved here can be improved if the measuring point arranged on the coil frame is arranged as close as possible to the actual bobbin tube holder.

A particularly accurate measurement can be made if the actual distance is measured directly between an empty bobbin tube rotatably supported in the bobbin frame and the drive roller.

In this respect, it is provided that the present method preferably also be used when the bobbin-producing textile machine is equipped with empty bobbin tubes or was. In this case, advantageously, the yarn or coil weight or the like does not matter, as is the case with previous computational methods, and the diameter of the bobbin tube is known exactly.

A particularly easily feasible at the winding unit measurement can be achieved if the actual distance is measured optically or mechanically.

Particularly accurate measurement results can be achieved simply if a distance value between 1 mm and 20 mm, preferably a distance value between 3 mm and 10 mm, is set as the nominal distance and / or as the actual distance. For this purpose, the coil frame is moved directly above the lateral surface of the bobbin tube into the desired position. Subsequently, the distance is ideally measured between the bobbin tube and the drive roller.

It is understood that other distance values can be favored, but a deviation can be detected visually very well, especially at several winding stations at the same time, if distances between 3 mm and 10 mm at the individual winding units are set, and thereby visually correspondingly good predictable Light gap arises. For example, it is already possible with a naked eye to recognize at a tens winding station section whether an actual position or a generated actual distance deviates by approximately +/- 2 mm from a desired nominal position or a desired nominal distance, or not. This means that affected winding units can be readjusted quickly and easily either manually or automatically.

The method can be used particularly advantageously if identical set and actual distances between the respective bobbin tube and the respective drive roller are set at all winding stations. As a result, a suitably equipped winding machine can be quickly adjusted and made ready for use.

A winder can be much more quickly ready for use again, if correction values with respect to the desired and actual distances with respect to each of the winding units in a storage device are stored fail-safe and retrievable, to be able to be provided, for example, after a power failure again. Such a memory device may for example be associated with a winding station computer. However, it can also be provided in a main computer of the spool-producing textile machine in order to be able to centrally manage the correction values of the winding units.

Particularly simple, the present method can be designed if the desired and / or the actual distance can be set using a coil motor driven frame motor, since in this case an additional pole wheel or an incremental encoder is not required.

In general, such a stepping motor is already present at the winding station, so that the design effort at the winding unit can be further reduced in order to carry out the present method very easily.

It is understood that in the present case the actual distance can be set manually by means of suitable operating keys for actuating a stepping motor.

Cumulatively or alternatively, this stepping motor in the context of the invention can also be automatically actuated by a correspondingly designed control device of the winding unit, in particular to approach the desired position with respect to the coil frame and accordingly set the actual distance.

The degree of automation of the present method can advantageously be increased if each of the winding units comprises a distance measuring device by means of which a distance between the coil frame, preferably between the coil sleeve rotatably supported by the coil frame and the drive roller, can be measured.

In any case, substantially better winding results can be achieved by means of the method according to the invention at all winding stations of a textile machine producing coils.

• Die einzige Figur schematisch eine perspektivische Ansicht einer Spulstelle einer Kreuzspulmaschine zum Herstellen von Kreuzspulen.

Further advantages, objects and characteristics of the present invention will be explained with reference to the appended drawing and the following description, in which an example of a textile machine producing several bobbins of a bobbin is shown and described. In the drawing shows:

• The single FIGURE schematically shows a perspective view of a winding unit of a cheese winding machine for producing cheeses.

The winding unit 1, which is shown schematically in the single FIGURE, of a textile machine 3 producing a reel 2 has several such winding units 1.

The textile machine 3 producing coils 2 shown in this exemplary embodiment is in particular a cross-wound winding machine 4 for producing cheeses 5.

Each of the winding units 1 comprises a storage rack 6, on which a coil frame 10 and a drive roller 11 are mounted.

The coil frame 10 is for this purpose mounted by means of a rotary support 12 in the form of a frame axis according to the rotational direction 13 pivotally about a pivot axis 14 around on the storage rack 6 and driven by a stepping motor 15. In this respect, the creel 10 can be motor-driven moved to the drive roller 11 or placed or moved away from the drive roller 11 or lifted. In this case, the coil frame 10 must be adjustable relative to the drive roller 11 as a function of a growing coil diameter during a coil travel.

In this embodiment, the stepper motor 15 is selected such that the coil frame 10 can be pivoted about the pivot axis 14 in 1.8 ° angular increments via a gear, not shown. As a result, the co-growing during a coil travel coil 2 can always be optimally adjusted relative to the drive roller 11, for example, to be able to adjust an interaction regarding contact forces 16 between the coil 2 and the drive roller 11 as needed, whereby, in particular, a slip control in the area of image winding zones can be made possible, as already explained above.

In order to be able to rotatably support the bobbin 2 or a respective bobbin sleeve 17 in the creel 10, two mutually opposite rotatable bobbin plates 18 (numbered here only by way of example) are provided on the rotary mount 12, between which the bobbin tube 17 is clamped accordingly.

The drive roller 11 is rotatably mounted about a stationary axis of rotation 20 on the storage rack 6 and driven by a drive motor 21.

To be able to run a thread 22 now in wild winding on the spool 2 to be able to produce the cheese 5 here, the drive roller 11 is equipped in a known manner with a wrench 23. Thus, can be dispensed with an additional Fadenchangiereinrichtung.

In addition, at each of the winding units 1, a control device 24 and a computing device 25 are provided in a data processing unit 26. In particular, the stepping motor 15 and the drive motor 21 are in operative connection with the data processing unit 26 via the signal lines 15A and 21A. The data processing unit 26 is in this case a part of a conventional Spulstellenrechners responsible for a winding process (not separately quantified), so that each of the winding units is still autonomous and independent of a main computer of the cheese 4 by the Spulstellenrechner controlled or regulated.

Alternatively, the control device 24 can also be controlled manually by means of operating buttons 27 and 28 placed on the front side 6A in order to be able to manually operate the stepping motor 15 of the coil frame 10 accordingly. The control buttons 27 and 28 are for this purpose with another signal line 29 also with the data processing unit 26 signal technology in operative contact.

Such a control device 24 as well as such a computing device 25 can also be provided centrally for all existing winding units 1 on a correspondingly equipped coil 2 producing textile machine 3.

In any case, by means of this control device 24 and this computing device 25, the inventive method for adjusting a basic angle of rotation if necessary, before the start of the spool travel at each of the winding stations 1 are advantageously carried out to recalibrate the winding units.

Here, in a first method step, the creel 10 is moved into a desired position, whereby an actual distance is set with a target distance value of 8 mm between the creel 10 and the drive roller 11.

In a second method step, the actual distance, for example, with a value of 9.5 mm, is now measured in this exemplary embodiment between the coil frame 10 and the drive roller 11 positioned in this desired position.

If the measured actual distance coincides with the desired setpoint distance value, the method can be ended at this point and the coil travel can be started. However, in the example chosen here, this is not the case.

In this respect, a correction value, for example in this selected case example of 1.5 mm, is determined in a third method step in the case of a deviation between the actual distance and the setpoint distance value.

In a further method step, the correction value is then ultimately stored and can thus be taken into account during subsequent winding processes during the rotational angle adjustment of the coil frame 10.

In the method, the actual distance can be manually adjusted via the control buttons 27 and 28 to the desired distance. Also, a gap set by the actual distance between the bobbin tube 17 and the drive roller 11 can be manually checked and manually corrected via the operation buttons 26 and 27.

However, the textile machine 3 producing the bobbin 2 is preferably equipped with a distance measuring device 30 which comprises sensor elements (not shown here) by means of which distances between the drive roller 11 and in particular the bobbin tube 16 or another measuring point on the creel 10 can be measured more accurately in an automated manner ,

While by means of the control device 24, the stepping motor 15 can be controlled automatically, for example, to set an optionally centrally predetermined desired distance value between the drive roller 11 and the bobbin tube 17, In order to automatically place the creel 10 in the desired position in front of the drive roller 11, the actually generated actual distance between the drive roller 11 and the bobbin sleeve 17 can be measured with the aid of the distance measuring device 30. A corresponding measured value is transmitted via the signal line 30A to the computing device 25 of the coil computer and compared there with the provided target distance value. Alternatively, this could also be done by a central computer (not shown here) which is connected to the data processing unit 26 by means of a central computer data line 31.

If the measured actual distance deviates from the setpoint distance value, for example in an intolerable measure, a correction value is determined by means of the computing device 25.

The creel 10 can accordingly be positioned in a correct and desired angle of rotation basic position, for example with respect to the storage rack, in order to re-examine the corrective measures if necessary.

The coil frame 10 can be adjusted very accurately with respect to the drive roller 11 with respect to its rotational angle position using the correction value in a subsequent coil travel. This advantageously also has the consequence that also the bearing forces acting between the drive roller 11 and the spool 2 can always be set extremely precisely, depending on the situation, in order to be able to generate a slip between the drive roller 11 and the spool 2, for example in the region of an image winding zone. As a result, the quality of the produced coil 2 or cross-wound bobbin 5 can be considerably improved, as already explained in detail above.

In addition, another signal line 32 is shown, by means of which an actual speed present on the coil 2 can be transmitted to the data processing unit 26. In this way, the beginning of a bobbin tube rotation can be reliably detected, whereby specifically the time of contact between the bobbin tube 17 and the drive roller 11 can be determined more accurately.

The correction value is buffer-stored in a corresponding intermediate memory 33 of the data processing unit 26 and thus stored at the winding unit 1 are taken directly into account for further winding operations in order to set the creel 10 more accurately relative to the drive roller 11 can.

It is understood that the exemplary embodiment described above is merely an embodiment of the textile machine according to the invention for carrying out the method according to the invention. In this respect, the embodiment of the invention is not limited to this embodiment.

LIST OF REFERENCE NUMBERS

1

winding station

2

Do the washing up

3

Coil manufacturing textile machine

4

Cheese machine

5

cheese

6

storage rack

6A

front

10

creel

11

drive roller

12

swivel mount

13

direction of rotation

14

swivel axis

15

stepper motor

15A

first signal line

16

bearing forces

17

bobbin

18

bobbin plate

20

stationary axis of rotation

21

drive motor

21A

second signal line

22

thread

23

spiraled

24

control device

25

computing device

26

Data processing unit

27

first control button

28

second control button

29

further signal line

30

Distance measuring device

30A

signal line

31

Central computer data line

32

other signal line

33

cache

Claims (9)

1. Method for adjusting a rotational angular position of a bobbin frame (10) supporting a bobbin (2, 5) in a rotational manner at the winding stations (1) of a textile machine (3) producing bobbins (2, 5), characterised in that at the winding stations (1) a rotational angle basic position of the winding frame is adjusted in that the winding frame (10) moves into a reference position with a reference distance between the winding frame (10) and the drive roller (11) and in this way an actual position of the winding frame (10) with an actual distance between the winding frame (10) and the drive roller (11) is produced, in that the actual distance is measured by a distance measuring device (30) and in that if there is a difference between the measured actual distance and the reference distance a correction value is determined, which is used if there is a critical variance for a following winding process for adjusting the bobbin frame (10) relative to the drive roller (11).
2. Method according to claim 1, characterised in that the actual distance is measured between an empty bobbin tube (17) mounted rotatably in the bobbin frame (10) and the drive roller (11).
3. Method according to claim 1 or 2, characterised in that the actual distance is measured optically or mechanically.
4. Method according to any one of claims 1 to 3, characterised in that a distance of between 1 mm and 20 mm is set as a reference distance and/or as an actual distance.
5. Method according to claim 4, characterised in that a distance of between 3 mm and 10 mm is set as the reference distance and/or actual distance.
6. Method according to any one of claims 1 to 5, characterised in that at all of the winding stations (1) the same reference distances and actual distances are set between the respective bobbin tube (17) and the respective drive roller (11).
7. Method according to any one of claims 1 to 6, characterised in that correction values relating to the reference distances and corrected actual distances are saved in a fail-safe and retrievable manner for each of the winding stations (1) in a storage device (32).
8. Method according to any one of claims 1 to 7, characterised in that the reference distance and/or the corrected actual distance is adjusted by means of a stepping motor (15) driving the bobbin frame (10).
9. Textile machine (3, 4) producing bobbins (2, 5) comprising a plurality of winding stations (1), which each comprise a bobbin frame (10) supporting a bobbin (2, 5) rotatably, a drive roller (11) for driving the bobbin (2, 5) and an adjusting motor (15) for setting a rotational angular position of the bobbin frame (10), for performing the method according to any one of claims 1 to 8, characterised in that each of the winding stations (1) comprises a distance measuring device (30) by means of which a distance can be measured between the bobbin frame (10) and the drive roller (11), in that the textile machine (3, 4) producing bobbins (2, 5) comprises a calculating device (25) for determining the correction value from the measured actual distance and the reference distance between the bobbin frame (10) and the drive roller (11) and a control device (24) for moving the bobbin frame (10) between an actual position and a reference position as a function of the determined correction value.

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