JP6732560B2 - Method and apparatus for optimizing the density of a twill package produced in a twill winding autowinder working unit - Google Patents

Description

The present invention comprises a work unit, each of which is connected to a work unit computer, for detecting a yarn length wound in a traverse package, and a device for determining a diameter of the traverse package, and The invention relates to a method and a device for optimizing the density of a traverse package produced in a traverse autowinder working unit, each working unit having a yarn tension adjusting device with a yarn tension sensor and a yarn tensioner.

Textile machines for producing twill winding packages, for example twill winding autowinders, have been known for a long time and are described in detail in numerous publications in the patent literature. Such textile machines usually consist of a number of similar working units arranged in rows next to each other, each working unit being associated with a wide variety of yarn handling or monitoring devices. It has a working unit computer connected to these yarn handling devices or yarn monitoring devices. Usually, the individual work unit calculators are also connected, preferably via bus lines, to the central control unit of the twill winding autowinder.

In a working unit of such a twill winding automatic winder, a spinning cup, which is preferably produced in a ring spinning machine and has a relatively small amount of yarn material, is required in a textile machine, such as a loom, which is placed downstream in the production process. It is rewound into a large volume twill roll package.

During the rewinding process, the quality of the yarn material of the spinning cup is further improved by clearing out yarn defects, for example thick and thin spots. That is, the running yarn drawn from the spinning cup is monitored by a so-called yarn clearer, which starts clearing cutting and clearing of the yarn defect when the yarn defect is found.

During rewinding, the running yarn is more continuously detected by the yarn tension sensor and the yarn tension is kept at the determined level by means of the yarn tensioner. In this way, it is desirable to ensure the most uniform winding of the yarn into the twill package and to ensure the production of the twill package at a preset density.

In order to obtain high productivity in such a twill winding automatic winder, rewinding is performed at a winding speed as high as possible, and the winding speed obtained at this time is the yarn quality of the feed material and the yarn feeding bobbin. It is related to the dissociation process of the thread from and the thread tension.

That is, when the yarn is unwound from the yarn supplying bobbin, a yarn tension that constantly increases toward the end region of the spinning cup is generated, but this is mostly due to the fact that when the yarn slides on the winding shaft of the spinning cup when it is drawn out. Related to friction. Especially near the end of the winding process, the thread tension rises strongly, for example when only about 10% of the thread length is present in the threading bobbin.

In order to be able to always keep the thread tension during the rewinding process at a controllable level that is as uniform as possible, a wide variety of thread tension adjustment devices or methods have already been proposed in the past. ..

In the method described, for example, in DE-A-1990 5860, the working unit calculator corresponds to the thread tension determined by the thread tension sensor, of the braking device acting on the running thread of the thread tensioner. The crimping pressure is preset. This preset crimping pressure is compared with a pre-determined limit value for the crimping pressure, if a limit value is obtained for a presettable time or if such a limit value is exceeded. Then, the winding process is interrupted.

In this way, it is possible to prevent the traverse package from going unnoticed and becoming very soft, for example due to incorrect guidance of the yarn in the region of the yarn tensioner.

An equivalent method for operating a working unit of a textile machine for producing a twill package is known from DE 102005045789.

Also in this known method, the working unit is a package driving device for adjusting the winding speed of a twill package and the yarn is fed from a yarn feeding bobbin connected to a working unit calculator and a working unit calculator. The yarn tension sensor for monitoring the yarn tension and the yarn tensioner for adjusting the yarn tension are configured. The value for the desired thread tension and the value for the permitted percent deviation from the desired thread tension can then be adjusted in the work unit calculator. If the permitted percent deviation in yarn tension is exceeded, the work unit calculator will immediately interrupt the winding process.

On-line monitoring of the thread tension is carried out by the working unit calculator and is used in particular in the production of color packages.This known method automatically acts on the winding process immediately when the deviation in thread tension is unacceptable. And that alarms are triggered. That is, it is ensured that the yarn tension is produced during the entire winding process, within the permissible tolerance limits.

A method for optimizing the winding speed in a working unit of a twill winding automatic winder is further known, based on DE 102012004910 A1. At this time, the working units each have a drive device for the traverse package, which includes a drive device whose rotation speed is adjustable, and a yarn tension adjusting device which includes a yarn tension sensor and a yarn tensioner.

According to this known method, the working unit is only first reached when the limit value for adjusting the thread tension is reached, i.e., for example, when the thread tensioner reaches the open end and at the same time there is a further offset value in the thread tension. The effect on the winding speed is added.

Finally, on the basis of German Patent Application Publication No. 3308454, German Patent Application Publication No. 19625512 and/or German Patent Application Publication No. 19849192, the known twill winding autowinder The working unit has one device for determining the diameter of the twill winding package manufactured in the working unit, or, during the manufacturing of the twill winding package, the working unit of the twill winding automatic winder is manufacturing the working unit. A method is used that can measure the diameter of the twill package.

For example, the working units described in DE-OS No. 3308454, in particular, each comprise a yarn presence monitoring device, a twill winding package stop indicator and a so-called package full indicator. The package full indicator activates when the twill winding package has a presettable diameter and switches the optical signal, and this optical signal patrols along the working unit of the twill winding automatic winder. Recognized by the carriage.

In the method described in DE-A 196 25 512, the angular velocity of a twill package is detected and evaluated by means of a transmitter in communication with a member that rotates with the twill package. The diameter of a twill package driven with a friction drum is determined during its manufacture. The diameter of the twill winding package is calculated by dividing the peripheral speed of the surface of the twill winding package by the angular velocity of the twill winding package. Calculated from the sensor signals of two consecutive sensors at fixed intervals in the circumferential direction, both sensors detecting the surface features of the twill package.

Finally, the method described in DE-A-198 49 192 uses this method to carry out a twill winding package exchange process performed by an automatically actuated service assembly in a working unit of a twill winding autowinder. Has been optimized. At this time, the control device of the service assembly can be continuously informed from the work unit calculator of information about the current diameter of the traverse package progressing in the work unit. At any given time, it can be positioned on the relevant work unit of the twill winding machine. The diameter of the twill winding package is then measured by means of a sensor device which is in any case provided in the working unit of such a twill winding winder. That is, during the winding process of one traverse winding package, the rotation speed measuring device arranged on the package frame detects the package rotation speed of the traverse winding package, and similarly, it is detected by the sensor and the accurate diameter is known. It is continuously processed to determine the instantaneous diameter of the twill package, taking into account the rotational speed of a certain drive drum.

Starting from the prior art mentioned above, the object of the present invention is to provide a method by which the density of a twill package produced in a working unit of a twill autowinder can be optimized. That is, it is desired to make the densities of all the twill winding packages manufactured in the working unit of the twill winding automatic winder as uniform as possible.

This task is solved according to the invention by the method as claimed in claims 1 and 2 or by a device having the features as claimed in claims 7 and 8, respectively.

Preferred embodiments of the method according to the invention are the subject of the dependent claims.

The actual diameter of the twill winding package or the twill winding package pre-set when a preset yarn length is obtained in one twill winding package wound in one working unit of the twill winding automatic winder. When the determined diameter is obtained, the wound yarn length is matched with the corresponding value of the twill winding package wound in the other working unit of the twill winding automatic winder, When the deviation of the value of the twill winding package from the corresponding value of the twill winding package wound in the other work unit exceeds the limit value, based on the correction coefficient obtained from the respective value of the deviation, The method according to the invention, which is adapted to exert an adjusting action on the thread tension adjusting device of the working unit, thus makes it possible to reduce the deviation of the butt in the next twill winding package wound in this working unit. There is an advantage that it can be surely guaranteed that the value becomes relatively small, preferably disappears.

As an alternative or preferably a complementary aspect, in a twill winding package wound in one working unit of a twill winding autowinder, when the twill winding package reaches a preset thread length or in advance. When the determined diameter is reached, first the density of the twill package is checked by matching the wound thread length with the actual diameter of the twill package, and then the twill package is determined each time. The density obtained is compared with the density of a twill package formed in another working unit of a twill autowinder. When the deviation of the density of the wound twill winding package from the density of the twill winding package wound in another working unit of the twill winding winder exceeds a limit value, the density of the wound twill winding package is increased. An adjusting action is applied to the yarn tension adjusting device of the working unit based on the density correction coefficient obtained from each value of the deviation. That is, by using the density correction coefficient, it is possible to ensure that the traverse package wound next in the working unit has a smaller density deviation than the preceding traverse package each time. ..

Preferably, the twill-wrap package wound in the other working unit is a previously-produced twill-wrap package or a twill-wrap package produced at the same time or just in the manufacturing process, these twill-wrap packages being , The parameters required for comparison or matching have already been determined. For the first preferred embodiment, the parameters of all work units can be used for comparison (Vergleich) or matching (Abgleich), respectively. For the last-mentioned preferred embodiment, parallel comparisons or matchings of all currently manufactured twill winding packages of twill winding autowinders can be carried out, if desired.

According to another preferred embodiment, it is possible to combine both of the above-mentioned methods with one another, in which case after the respective correction factors have been created, which correction factor is applied to the thread tension adjusting device for adjusting action. It is determined whether it is taken in and accordingly transmitted to the thread tension adjusting device. At this time, the one or more criteria may be predetermined and may be stored in a callable manner on a scale connected to or associated with the central control unit. For example, the criterion may be the decision to always use the correction factor from the method according to the first-mentioned aspect or the correction factor from the method according to the second-mentioned aspect. An alternative criterion may be that, for example, in a relative comparison, a correction factor which is based on a large deviation from the corresponding limit value is selected and transmitted. Preferably, the correction factors may be made such that the correction factors are comparable with each other. A suitable combination of methods makes it possible to produce a highly reliable optimized twill package.

In a preferred embodiment, the yarn tensions of the running yarns used for winding the twill package, determined using the yarn tension sensor of the yarn tension adjusting device of the working unit, are calculated in each case. Correct using the coefficient. As described above, this correction coefficient is generated, for example, from the density deviation of the twill winding package with respect to the density of the twill winding package formed in another working unit of the twill winding autowinder. That is, as far as possible, the twill winding package subsequently manufactured in the corresponding working unit has a density corresponding to the average density of the twill winding packages manufactured in other working units of the twill winding autowinder so far. Then, a correction is made.

With regard to the use of correction factors, in particular density correction factors, a wide variety of suitable possibilities are then given.

The density correction factor can be used, for example, to carry out a correction in the thread tensioner of the thread tensioning device of the relevant working unit. Another possibility is that the correction factor is used for adjusting the winding speed.

In a preferred embodiment, furthermore, the correction factors are stored respectively voltage-dependently in the work unit calculator of the work unit or in the central control unit of the twill winding autowinder.

This ensures that the correction coefficient can be obtained even when a power failure occurs in the twill winding auto winder. Power failures are not uncommon, especially in areas where infrastructure is relatively weak, where such twill autowinders are often used all the time.

The respective devices for carrying out the corresponding method are connected in the area of the working unit with a device for detecting the length of the yarn wound in the traverse package and a device for determining the diameter of the traverse package, respectively. Has a unit calculator. Furthermore, each working unit has a thread tension adjusting device including a thread tension sensor and a thread tensioner.

The work unit calculator of the work unit is further connected to the central control unit of the twill winding autowinder. According to one aspect of the device, the work unit calculator is a twill winding package, which is wound in one work unit of a twill winding automatic winder, when a presettable yarn length is obtained. The yarn length detected is adapted to be transmitted to the central control unit if the required diameter of the package or a predetermined diameter is obtained. In the central control unit of the twill winding automatic winder, the transmitted value is matched with the required corresponding value of the twill winding package wound in the other working unit of the twill winding automatic winder, When the deviation of the value of the twill winding package from the corresponding value of the twill winding package wound in the work unit exceeds a limit value, a correction coefficient obtained from the value of the deviation of the twill winding package is created. .. The value of the deviation may be an average value of the deviations based on the matched value, a maximum value of the deviations based on the deviation of the matched value, or a selected value of the deviations based on the matched value. The selected value of the deviation may be a reproducible value of the deviation based on the matched value, where the selected value is different from the maximum and minimum values of the deviation based on the matched value. ing. The selected value of the deviation may be, for example, the most frequently occurring value of the deviation based on the matched values.

According to an alternative or preferably a supplementary aspect, the working unit calculator obtains a presettable yarn length in one traverse package wound in one working unit of a twill autowinder. The density of the twilled package is determined by a match between the wound yarn length and the diameter, and the determined density is determined by the central control unit. Is configured to be transmitted to. The central control unit is then configured to compare the required density of the twill winding package with the required density of the twill winding package wound in another working unit of the twill winding winder. At this time, when the deviation of the density of the twill winding package from the density of the twill winding package wound in another work unit of the twill winding winder exceeds a limit value, each value of the density deviation of the twill winding package is increased. A density correction coefficient obtained from the above is created.

Each correction coefficient thus created is then transmitted to the yarn tension adjusting device. If necessary, an adjusting action is applied on the basis of the correction factor, for example by means of the thread tension adjusting device of the working unit.

The apparatus described above according to a preferred embodiment may be designed to carry out the above-described combinations of suitable methods. To that end, the working unit calculator and the central control unit can be configured or configured accordingly.

By means of the method according to the invention or the device according to the invention, it is possible to produce substantially identical twill winding packages, in particular twill winding packages having a uniform density, after running-in time in one twill winding autowinder 1. You can be assured that you can.

The invention will now be described in more detail by means of embodiments described with reference to the drawings.

It has a number of work units arranged in rows next to each other, the work unit calculators of these work units being connected via bus lines to the central control unit of the textile machine, a twill winding auto. It is a front view which shows a winder roughly. FIG. 3 is a side view showing one working unit of a twill winding automatic winder equipped with a yarn handling device or a yarn monitoring device required during the winding process. 1 is a schematic front view of one working unit of a twill autowinder equipped with the equipment necessary to carry out the method according to the invention.

In FIG. 1, a textile machine for producing a twill winding package, in the present embodiment, a so-called twill winding automatic winder, indicated generally by the numeral 1, is schematically shown in a front view.

Such a twill winding automatic winder 1 usually has a large number of similar working units 4 between its two end frames 2 and 3. In such a working unit 4, which is also known as a winding unit, a spinning cup 5 produced in a ring spinning machine (not shown) which is preceded in the production process is rewound into a large volume twill winding package 6. Be done.

The completed twill package is transferred to a twill package carrier 33, which extends the length of the machine using an automatically actuated service unit (also not shown), and then placed on the machine end side. Packaged charge station or similar. That is, a service unit known per se, for example, a so-called traverse package exchanging device takes out the completed traverse package 6 from the package frame 30 of the working unit 4, and the taken-out traverse package 6 is transferred to the traverse package conveying device 33. hand over. The service unit then attaches a new empty traverse package tube to the package frame 30 of the corresponding working unit 4 instead.

In such a twill winding automatic winder 1, the supply of fresh yarn material to the working unit 4 is often carried out via a replenishing device (Logistikeinrichtung) formed as a spinning cup/empty tube conveying system 7.

Often directly directly connected to the corresponding spinning cup/empty tube conveying system of the ring spinning machine, in such a spinning cup/empty tube conveying system 7, it is vertically oriented and positioned on the conveying tray 8, The spinning cup 5 or the empty pipe 9 circulates.

Instead of such a spinning cup/empty tube conveying system, however, the twill winding autowinder 1 can also have a spinning cup magazine specific to the working unit, these spinning cup magazines being then preferably the so-called rotary magazines. In the spinning cup magazine, the spinning cup 5 is manually mounted by the operator.

As further shown in FIG. 1, such a twill winding automatic winder 1 usually further comprises a central control unit 10, which is connected via a bus line 11 to the individual working units 4. It is connected to the work unit computer 12.

FIG. 2 shows in side view the working unit 4 of the twill winding automatic winder 1 with the most important yarn handling device or yarn monitoring device used during the rewinding process.

As can be seen from the drawing, in such a working unit 4, the yarn 13 is pulled out from the spinning cup 5 arranged at the winding position I, and the yarn 13 is first lowered on the way to the twill winding package 6. It passes through the thread sensor 14, which is connected to the working unit computer 12 via a signal line 15. Using such a bobbin thread sensor 14, it is confirmed whether or not a so-called bobbin thread exists in the first place, for example, after a thread break or after a controlled thread clearing cut and before the start of an upper thread search.

A thread tensioner 16 is arranged above the bobbin thread sensor 14, that is, behind or downstream of the bobbin thread sensor 14 in the thread traveling direction. The thread tensioner 16 includes two brakes as shown in FIG. 3, for example. A crimping pressure is applied to the running yarn 13 using the element. The thread tensioner 16 is connected to the working unit computer 12 via a control line 17 and can be determined and controlled by the working unit computer 12.

On the outside of the normal yarn track, there is also a yarn end splicing device 18, preferably a pneumatic splicer. The thread splicer 18 is likewise connected to the working unit computer 12 via a control line 19. In the further course of the yarn track, a yarn clearer 20 with a yarn cutting device 21, a yarn tension sensor 22 and additionally a paraffin application device 23 are arranged. These functional elements are also connected to the work unit computer 12 via control lines 24-27.

During the winding operation, the thread tension sensor 22 is always used to monitor the thread tension of the running thread 13, and the thread tension signal supplied from the thread tension sensor 22 is used to monitor the thread tension via the working unit computer 12. The thread tensioner 16 is controlled so that the thread 13 is wound up on the twill winding package 6 with a substantially constant thread tension.

Following the paraffin application device 23, a yarn guide 28 is provided at the end in the yarn traveling direction, and the yarn guide 28 guides the yarn 13 before it rides on a winding drum 29 around which the yarn 13 rotates, for example, a yarn guide drum. ,pass. The winding drum 29 serves to traverse the yarn 13 to form the traverse winding package 6.

The traverse package 6 is then held rotatably by means of a pivotally supported package frame 30, the surface of which during winding operation is preferably a winding drum 29 driven by an individual motor. The winding drum 29 rotates the twill winding package 6 by friction.

Instead of the thread guide drum 29 shown in the embodiment of FIG. 2, it is of course possible to use another equivalent drive or thread placement device. The traverse package can also be directly driven by using, for example, a spindle drive device, and can have, for example, a separate yarn traversing device. At this time, as the yarn traversing device, for example, So-called finger thread guides can be used.

In the area of the winding device 34, sensor devices 35, 36, which are not shown in FIG. 2 and which will be described in more detail later with reference to FIG. 3, are provided. In connection with the unit calculator 12, it is possible to detect the length of the yarn wound on the traverse package 6 or the instantaneous diameter of the traverse package 6, respectively.

The working unit 4 further has, as usual, a suction nozzle 31 which is pivotably supported and is capable of supplying a negative pressure. By using this suction nozzle 31, after the winding is interrupted, the twill winding package 6 is provided. The wound up upper yarn can be accommodated and delivered to the yarn joining device 18. Furthermore, the working unit 4 also has a gripper tube 32, which is likewise pivotally supported and can be supplied with a negative pressure, by means of this gripper tube 32, for example, a bobbin thread retained on the thread tensioner 16 after interruption of winding. Can be accommodated and similarly delivered to the yarn splicing device 18.

A preferred aspect of the method will be described with reference to FIG. At this time, in FIG. 3, one of the working units 4 of the twill winding autowinder 1 is shown very schematically in a front view, which working unit 4 is necessary for carrying out the method according to the invention. It has all the necessary equipment.

As shown in FIG. 3, during the rewinding process of the yarn feeding bobbin, in particular the spinning cup 5 formed in the ring spinning machine, one yarn 13 each is withdrawn from the spinning cup 5 into a winding package, for example a cone. It is rolled up into a twill-wrapped package 6. During the rewinding process, the spinning cups 5 are then respectively located in the so-called winding position I in the lower region of one working unit 4 of the twill winding automatic winder 1.

The traverse package 6, which is rotatably held in a pivotally supported package frame 30, is in contact with or placed on a winding drum 29 driven by an individual motor. That is, the winding drum 29 of each work unit 4 can be driven by an individual motor type by using one driving device 39. The drive device 39 comprises a speed control device, preferably a frequency converter 41, which is connected to the drive device 39 via the signal line 37 and to the work unit calculator via the control line 44. It is connected to 12. The speed control is performed by the work unit calculator 12 in relation to work unit-specific parameters such as, for example, thread tension, or in connection with the open state of the thread tensioner 16.

For example, the winding drum 29, which is a so-called yarn guide drum, rotates the traverse winding package 6 by friction, and simultaneously traverses the yarn 13 wound up in the traverse winding package 6.

The winding frame 30 is equipped with a sensor device 35, by means of which the number of revolutions of the rotating twill winding package 6 is always detected and is additionally sent to the working unit calculator 12 via a signal line 38. ..

The drive 39 of the winding drum 29 also comprises a sensor device 36, which has, for example, a pulse wheel 42 and an associated sensor 43. The sensor device 36 likewise always sends a pulse via the signal line 40 to the working unit calculator 12, whereby the working unit calculator 12 continuously determines the number of revolutions of the winding drum 29.

Prior to the start of the winding process, it is desirable for the determined and manufactured twill winding package 6 to have in the work unit calculator 12 of the work unit 4 or in the central control unit 10 of the twill winding autowinder 1, the yarn length The length and/or diameter can be entered.

During the winding process, the yarn length and the diameter of the twill package 6 are constantly monitored for quality assurance. That is, in order to calculate the length and diameter of the wound twill package 6, the pulses from the sensor devices 35, 36 are continuously evaluated in the winding unit electronics, eg the working unit calculator 12, At this time, the instantaneous diameter of each twill winding package 6 is obtained from the known diameter of the winding drum 29, the obtained diameter of the winding drum 29, and the obtained rotation speed of the twill winding package 6.

However, it is not possible to obtain a completely accurate determination of the length of the wound yarn or of the diameter of the twill package by pure counting of the pulses of the sensor devices 35, 36 during the winding process. It is possible. Because, as is known, the measurement results can be varied by various other methods such as the yarn type, the spinning method, the yarn pressure, the yarn tension, the winding speed, the contact pressure between the twill package and the yarn guide drum, and the like. This is because it is related to the influence. Therefore, in order to compensate or offset these winding conditions, so-called winding correction factors are usually determined and input to the work unit computer.

As shown in FIG. 3, the yarn 13 is provided on the way from the spinning cup 5 to the twill winding package 6, a yarn guide, a fixed and controllable yarn tensioner 16, a yarn clearer 20 including a yarn cutting device 21, and a yarn tension. It passes through the sensor 22.

As already mentioned in connection with FIG. 2, the thread tensioner 16, the thread cutting device 21, the thread clearer 20 and the thread tension sensor 22 are connected to the winding unit electronics via the control or signal lines 17, 24, 25, 26. It is connected to a device, a so-called work unit calculator 12. The thread tensioner 16 applies a pressure-bonding pressure set by the working unit calculator 12 to the traveling thread 13 at this time, while the thread clearer 20 causes defects in the traveling thread 13, particularly in a thick portion of the thread 13 or Monitor small areas.

When an unacceptable yarn defect occurs, the running yarn 13 is cut off by the yarn cutting device 21 and the defective yarn portion is cut off. The resulting yarn ends are then reconnected to each other using a yarn splicing device 18 (not shown in FIG. 3).

According to one embodiment, after one traverse package 6 is completed in one of the work units 4 of the twill auto winder 1, the density detection of the finished traverse package 6 is first performed each time. Then, a density comparison with another twill winding package 6 wound in the working unit 4 of the twill winding autowinder 1 is performed. That is, when one traverse winding package 6 manufactured in one working unit 4 obtains a predetermined yarn length or a predetermined diameter, the wound yarn length is obtained from the traverse winding package 6. The exact density of the wound twill package 6 is determined for the first time by abgleiching with the given diameter. The determined density of the wound twill package 6 is then compared to the density of the twill package formed in another working unit of the twill autowinder.

When the deviation of the density of the corresponding twill winding package from the density of the twill winding package manufactured in the other working unit of the twill winding winder exceeds the limit value, the value of the density deviation of the corresponding twill winding package at each time. By using the density correction coefficient obtained from the above, the adjusting action is added to the yarn tension adjusting device of the working unit. That is, during the preceding winding process, the thread tension determined using the thread tension sensor of the thread tension adjusting device of the working unit is post-adjusted by the calculated density correction coefficient, which is It can be calculated from the density deviation of the corresponding twill winding package with respect to the density of the twill winding package formed in another working unit of the twill winding automatic winder.

According to another or supplementary embodiment, the diameter of the traverse package 6 is determined or the preset diameter of the traverse package 6 is determined if a preset yarn length is obtained. When obtained, the yarn length is detected. The determined or detected value is then matched with the corresponding value of a traverse package manufactured in another working unit of the traverse autowinder.

If the deviation of the value of the corresponding twill winding package from the corresponding value of the twill winding package wound or manufactured in another work unit of the twill winding automatic winder exceeds the limit value, the deviation value is set. An adjusting action is exerted on the thread tension adjusting device of the working unit using the correction factor which is generated on the basis of this. That is, during the preceding winding process, the thread tension determined using the thread tension sensor of the thread tension adjusting device of the working unit is adjusted back by the calculated correction factor.

In practice, as much as possible, the twill winding package that is subsequently manufactured in the corresponding working unit should have a density corresponding to the average density of twill winding packages that have been manufactured in other working units of the twill winding autowinder. Adjusted to have. At this time, the thread tension adjustment is performed via the thread tensioner of the work unit. That is, the thread tensioner is adjusted each time by the correction coefficient obtained in the past, such as the density correction coefficient, and affects the thread tension.

In order to be able to use the proposed method even in areas where electrical system faults can occur, the correction factors are each further independent of the voltage and the work unit calculator or twill winding of the relevant work unit. It is stored in the central control unit of the autowinder. By doing so, it is guaranteed that the correction coefficient can be reliably obtained even when a power failure occurs in the twill winding autowinder.

This method is preferably used for a long time until all the traverse packages formed in the working unit of the traverse autowinder have a density that is approximately equal or even optimized.

That is, the yarn tension is long in the working unit of the twill winding automatic winder until the densities of all the twill winding packages manufactured in the working unit of the twill winding automatic winder become substantially equal or optimized, and the correction coefficient is used. It will be adjusted later.

Claims (8)

The work unit (4) is connected to the work unit calculator (12), and is provided with a device (35) for detecting the length of the yarn wound on the twill winding package (6) and the twill winding package (6). A device for determining the diameter (36), and the working unit (4) each has a yarn tension adjusting device with a yarn tension sensor (22) and a yarn tensioner (16). In a method for optimizing the density of a twill winding package (6) produced in a working unit (4) of a winding autowinder (1),
In one traverse winding package (6) wound in one working unit (4) of the above-mentioned twill winding automatic winder (1), when a presettable yarn length is obtained, the twill winding package (6) If the actual diameter of 6) or a pre-determined diameter of the twill winding package (6) is obtained, the length of the wound thread is calculated as the other of the twill winding autowinder (1). From the corresponding value of the twill winding package (6) wound in another working unit of the twill winding automatic winder, matching the corresponding value of the twill winding package (6) wound in the working unit (4), When the deviation of the value of the twill winding package (6) exceeds a limit value, an adjusting action is applied to the yarn tension adjusting device of the working unit (4) based on a correction coefficient obtained from the value of the deviation. A method for optimizing the density of a twill winding package (6) manufactured in a working unit (4) of a twill winding automatic winder (1). The work unit (4) is connected to the work unit calculator (12), and is provided with a device (35) for detecting the length of the yarn wound on the twill winding package (6) and the twill winding package (6). A device (36) for determining the diameter, and the working unit (4) each has a yarn tension adjusting device with a yarn tension sensor (22) and a yarn tensioner (16). In a method for optimizing the density of a twill winding package (6) produced in a working unit (4) of a winding autowinder (1),
When the twill winding package (6) wound in one working unit (4) of the twill winding autowinder (1) has reached a preset thread length or a predetermined diameter, it is wound. Check the density of the twill winding package (6) by matching the yarn length with the actual diameter of the twill winding package (6),
The required density of the twill winding package (6) is compared with the density of the twill winding package (6) wound in another working unit (4) of the twill winding autowinder (1),
When the deviation of the density of the twill winding package (6) from the density of the twill winding package (6) wound in the other working unit of the twill winding winder exceeds a limit value, the twill winding is performed. A twill winding automatic winder (1) characterized in that an adjusting action is applied to the yarn tension adjusting device of the working unit (4) based on a density correction coefficient obtained from each value of the density deviation of the package (6). A method for optimizing the density of a twill package (6) produced in the working unit (4). The running thread (13) used to wind the twill package (6) was determined using the thread tension sensor (22) of the thread tension adjusting device of the working unit (4). Method according to claim 1 or 2, wherein yarn tension is modified using the calculated correction factor or the calculated density correction factor . 4. The method according to claim 1, wherein the correction factor or the density correction factor is used for the thread tensioner (16) of the corresponding working unit (4). 5. The method according to claim 1, wherein the correction factor or the density correction factor is used for adjusting the winding speed. A central control unit (10) of the working unit calculator (12) of the working unit (4) or of the twill winding autowinder (1) without affecting the correction coefficient or the density correction coefficient , respectively. 6. A method according to any one of claims 1 to 5, stored in. A working unit calculator (12) to which a device (35) for detecting the length of the yarn wound around the twill winding package (6) and a device (36) for determining the diameter of the twill winding package (6) are connected. An apparatus for performing the method of claim 1, comprising:
In the working unit calculator (12), a presettable yarn length was obtained in one twill winding package (6) wound in one working unit (4) of the twill winding automatic winder (1). In this case, the detected yarn length is transmitted to the central control unit (10) if the required diameter of the twill package (6) or a predetermined diameter is obtained. Is composed of
The central control unit (10) transfers the transmitted value to the determined corresponding value of the traverse package (6) wound in another working unit (4) of the traverse autowinder (1). Butt, when the deviation of the value of the twill winding package (6) from the corresponding value of the twill winding package (6) wound in another working unit of the twill winding winder exceeds a limit value, A correction coefficient obtained from the value of the deviation is generated, and the correction coefficient is transmitted to a yarn tension adjusting device for an adjusting action based on the correction coefficient. An apparatus for carrying out the method according to 1. A working unit calculator (12) to which a device (35) for detecting the length of the yarn wound around the twill winding package (6) and a device (36) for determining the diameter of the twill winding package (6) are connected. An apparatus for performing the method of claim 2, comprising:
In the working unit calculator (12), a presettable yarn length was obtained in one twill winding package (6) wound in one working unit (4) of the twill winding automatic winder (1). In some cases, or when a predetermined diameter is obtained, the density of the twill winding package (6) is determined by a match between the wound yarn length and the diameter, and the determined density is in the center. Is configured to be transmitted to the control unit (10),
The central control unit (10) winds the required density of the twill winding package (6) in another working unit (4) of the twill winding automatic winder (1). The density deviation of the twill winding package (6) from the density of the twill winding package (6) wound in the other working unit of the twill winding autowinder is compared with the density obtained by When the value exceeds the above, a density correction coefficient obtained from each value of the density deviation of the twill winding package (6) is created, and the density correction coefficient is applied to the yarn tension adjusting device for the adjusting action based on the density correction coefficient. Device for carrying out the method according to claim 2, characterized in that it is arranged to communicate.

Images