DE102005037124A1 - Method for controlling the draft of a default field of a textile machine and textile machine - Google Patents

Abstract

A textile machine (1) and a method for controlling the warping of a warpage (VF) of a textile machine (1) are proposed, in which the length-specific mass of a section (AB¶n-1¶, AB¶n¶, AB¶n + 1 ¶) a fiber mixture (FG¶zu¶) fed to the draft zone (VF) is detected by means of a sensor device (11) arranged upstream of the warping field (VF) and a control intervention necessary to equalize the length-specific mass of the fiber batch fed (FG¶zu¶) the warpage of said warping field (VF) is carried out on the basis of the length-specific mass of the section (AB¶n-1¶, AB¶n¶, AB¶n + 1¶) as soon as the section (AB¶n-1¶, AB ¶N¶, AB¶n + 1¶) reaches a location specified as a rule point of action (R¶0¶, R¶1¶, R¶2¶, R¶3¶); whereby at least once in a production phase of the textile machine (1) a procedure (P¶1¶, P¶2¶, P¶3¶, P'¶1¶, P'¶2¶) for the dynamic adjustment of the control point (R¶0 ¶, R¶1¶, R¶2¶, R¶3¶) is carried out on changing operating parameters, with a plurality of different test control starting points (T¶11¶, T¶12¶, T¶13¶; T¶21¶ , T¶22¶, T¶23¶; T¶31¶, T¶32¶, T¶33¶) is used to generate at least one measurement result (M¶11¶, M¶12¶, M¶13¶; M¶21¶, M¶22¶, M¶23¶; M¶31¶, M¶32¶, M¶33¶; M'¶11¶, M'¶12¶, M'¶13¶; M ' ¶21¶, M'¶22¶, M'¶23¶) at least one quality-determining variable, for example the CV% value or a variable derived therefrom, of the delay field (VF) ...

Description

The The present invention relates to a method of controlling warpage a default field of a textile machine and a textile machine according to the preambles the independent one Claims.

Essential for the Control of the delay of a default field of a textile machine is the location of the so-called Regeleinsatzpunktes. The rule starting point is a given location where an upstream of the Arrears field with regard to its length-specific mass vermessener Section of a fiber amount is located, if one to equalize the length-specific Mass required control intervention in the delay of the default field he follows. The location of the Regeleinsatzpunktes can, for example, as its distance from the measuring point be specified. Such an indication ultimately gives the one Range on which a particular section of the fiber amount of Place of measurement until travels to the place of default. Alternatively, the location of the Regeleinsatzpunktes as a runtime, which a certain section of Fasergemenges from the place of measurement to the place of default required specified become. Both details are synonymous technically equivalent. For conversion only has to the speed of Fasergemenges be known.

From the DE 10 041 892 A1 For example, a method for controlling the delay of a default field on a regulating line is known, wherein a setting value for the control point of use is determined in a pre-operational test or setting run. For this purpose, various control application points are set in succession on a trial-by-trial basis, with several CV values having a different reference length of the fiber quantity leaving the default field being determined at each trial set point of use. The CV values determined at a certain control point are added together to obtain a quality index. The quality indices determined at the different experimentally set control points are then used to form a polynomial of the 2nd degree, the minimum of which is determined by means of numerical methods and considered to be the optimal control point.

A disadvantage of the by the DE 100 41 892 A1 The disclosed method is that it only leads to a unique and sufficiently accurate set point for the Regeleinsatzpunkt when the actual course of the applied over the Regeleinsatzpunkt quality metrics is parabolic. However, this is rarely the case in practice. The thus found rule use point therefore deviates more or less from the optimal rule use point.

Farther it is disadvantageous that the Formation of a polynomial as well as the determination of the minimum of the polynomial associated with a high computational effort. This requires the Providing relatively large computing capacity, what the textile machine undesirable expensive.

Farther it is a disadvantage that at the determination of control points during a pre-operational Test or Einstellaufs operating parameters prevail, which with while the Produktionsfase the textile machine present operating parameters rarely match. In other words: the by means of the method described above determined rule usage point differs in principle from the optimal Rule point in the production phase of the textile machine from. This in turn leads regularly to one suboptimal quality of the withdrawn from the default field Fiber mixture.

task The present invention is thus a method and a To provide textile machine, which avoid the disadvantages mentioned.

The Task is solved by a method and a textile machine with the features of independent Claims.

at the method according to the invention is at least once in a production phase of the textile machine a procedure for dynamically adapting the rule insert point changing operating parameters carried out.

Of the Term includes operating parameters all Boundary conditions, which for the operation of the textile machine, in particular for the delay of the default field, are relevant. This includes in particular properties of the textile machine or one of their components. An example is the maintenance status or the temperature of the textile machine or individual components thereof pointed.

Further operating parameters are the properties of the supplied fiber amount. In this case, for example, the shape of the submitted Fasergemenges of importance. For example, it may be present as one or more slivers or as a non-woven fabric. Also the fiber material, for example cotton or synthetic materials or mixtures thereof, diameter and length of the fibers and their arrangement in the amount of fiber, which can be described inter alia by the degree of parallelization are relevant operating parameters. Also, the feed rate of the delay field supplied amount of fiber for the choice of the Regeleinsatzpunktes is important.

Farther comprises the term operating parameters environmental conditions, such as the Ambient temperature or humidity.

Under a production phase of the textile machine is understood as a period while the one intended for further processing fiber amount removed from the default field becomes.

in the The procedure frame becomes a plurality of different test rule usage points selected and used to each at least one measurement result of at least one quality characteristic Size of the the amount of fiber withdrawn in the defaulted delay field to investigate. In the at least one quality-characterizing size can for example, the CV% value with a standard or with a different reference length act. However, it is also conceivable quality-characteristic sizes, the derived from one or more CV% values. Each of the test rule insert points is at least once every at least within a procedure set as long as it is to determine the at least one chosen quality characteristic Size at the respective Test rule point is required. The order in which the once selected Test rule points are set, is irrelevant in principle. Nevertheless, a specific adjustment pattern can be specified.

The Actual adaptation of the Regeleinsatzpunktes then takes place on the Basis of an evaluation of the determined measurement results of at least one quality characteristic Size. The Dynamic adjustment of the rule insert point can be done either by a retention of the previous rule application point or by a correction of the previous Regeleinsatzpunktes after the one or the other side.

By the evaluation of the determined measurement results of at least a quality-defining one Size, so by considering the result of the delay process, all relevant Operating parameters considered in the choice of the Regeleinsatzpunktes become. It is neither necessary that the relevant operating parameters still identifies these numerically determined become. In other words, the implementation of the method according to the invention leads to an optimization of the control point during operation of the Textile machine, even if operating parameters change, where neither the knowledge of the fundamental relationship between the operating parameters and the optimal rule application point nor the knowledge of the current Value of the operating parameter is required.

advantageously, becomes the previous rule usage point as one of said test rule usage points used. In this case, a measurement result of the at least one quality characteristic Size determined be without one from the previous rule use point deviating test rule use point must be used. Furthermore, the evaluation of the determined measurement results is simplified since It is easy to see if there is a change in the standard usage point to improve the quality of the discharged Lead fiber quantities becomes.

advantageously, will be at least one upstream the previous rule insert point located test rule use point and at least one downstream the previous rule insert point located test rule use point used. So it can be easily determined if an upstream or one downstream directed correction of the previous rule of application point makes more sense is.

advantageously, at least one pair of test rule insert points is used which is arranged symmetrically to the previous rule insert point is. A symmetrical arrangement means that the upstream Test rule insert point and the downstream test rule insert point in terms of have the previous rule use point the same Ab stand. This will facilitates the evaluation of the determined measurement results.

Especially Preferably, said test rule usage points are chosen to be an essential one Deterioration of quality of the withdrawn from the default field Fiber amounts during their use is avoided. Under a significant deterioration the quality of the discharged fiber amount will be such a deterioration in quality understood that the further processing of the during the Limits the amount of fiber produced or makes it impossible.

The said test control points are preferably selected such that at least one quality-defining variable, for example the CV% value or a quantity derived therefrom, of the fiber amount discharged from the default field is not more than 15%, preferably not more than 10%, particularly preferably not more than 5%. , more preferably at most 2.5%, changed becomes. This ensures that no major leaps in quality occur during the execution of the procedure.

Farther it is preferred if the said test rule usage points are such chosen be that their maximum distance from the previous rule insert point at the most 20%, preferably at most 15%, more preferably at most 10%, more preferably at most 5%, of the length of the default field is. Under the length the default field is the distance of the clamping lines of the drafting elements, For example, the drafting roller pairs, understood. In this case it is ensured that during the Procedure no leap change, in particular, no sudden deterioration, the quality of the discharged Fasergemenges causes becomes.

Especially in the processing of short staple fibers, it has proved to be advantageous proven when the test rule use points are chosen so that their maximum distance from the previous rule insert point at the most 12 mm, preferably at most 9 mm, more preferably at most 6 mm, more preferably at most 3 mm.

In an advantageous embodiment the adjustment of the Regeleinsatzpunktes so that the one the test rule insert points to the best of said measurement results the at least one quality-marking Size led, after the Procedure is used as the rule entry point. Will the CV% value used as a quality-defining size, such is the result of measurement the best, which has the least amount.

In In an advantageous further embodiment, the adaptation takes place dependent on from the evaluation of said measurement results either as confirmation of Previous Regeleinsatzpunktes or as a shift with a predetermined increment. A shift of the Regeleinsatzpunktes means that the one Place in the default field, where the control intervention for band equalization takes place, further upstream or downstream (with respect to the transport direction of Fasergemenges) shifted becomes.

in this connection Preferably, the stepwise is set to be smaller is the maximum distance of said test rule insert points from the previous rule application point. This ensures that by an error in the determination of said measurement results and / or the evaluation thereof at most, a slight deterioration in the quality of the discharged Fasergemenges is effected. In contrast, should a shift of the Rule point to a larger amount may be required as the predetermined step size, this may by repeatedly performing the procedure be effected.

The Direction of the shift of the Regeleinsatzpunktes can in simpler Based on the relative position of the test rule use point, the to the best of the measurement results led, across from the previous rule insert point can be determined.

advantageously, is the predetermined increment at most 10%, preferably at most 7.5%, more preferably at most 5% or at most 2.5% of the length the default field.

at The processing of short staple fibers has proven it when the increment at the most 6 mm, preferably at most 4.5 mm, more preferably at most 3 mm, more preferably at most 1.5 mm.

Farther it is advantageous if, within a said procedure, at least one of the test rule application points at least several Einzelmeßwerte one said qualifying Size to be detected from whose sum or mean the respective measurement result is determined. hereby becomes a random one Deviation of the determined measurement result from the true value of the quality-defining Size reduced while minimizing the effect of individual outliers.

Especially preference is given to adapting the rule insert point based on a comparison of the amounts the determined measurement results, which possibly determined from several Einzelmeßwerten carried out. A complex determination of a function, for example a polynomial, can be avoided this way.

there it is advantageous if several within a said procedure Sequences performed be within a said sequence, each of the respective test rule entry points at least once to determine at least one Einzelmeßwertes is set. Those at a specific test rule point related Individual measuring values are determined with a time interval, which leads to a more precise measurement result leads.

Within a sequence can be the order of the test rule insert points fortuitously selected become. It is essential, above all, that for each Testregeleinsatzpunkt at least one single reading is determined. Preferably, however, the order corresponds to one predetermined adjustment pattern. This predetermined adjustment pattern becomes preferably for all Sequences used at least one procedure.

For example a pattern can be specified, in which first one Test Regeleinpunktpunkt is set, which is the previous Regeleinsatzpunkt corresponds, then a downstream of the Previous Regeleinsatzpunktes located test rule use point and then an upstream the previous rule insert point located test rule use point. This adjustment pattern could of course, too be applied in reverse order. But equally well could the test rule usage points according to their spatial location one after the other be set. In other words, the one test rule insert point the furthest upstream (or downstream) is set, is set first, then its immediate neighbor and then its immediate neighbor, etc.

In Particularly advantageously, the procedure is performed by a controller the textile machine controlled. As a result, the user effort be reduced.

nevertheless can be provided that the procedure manually initiated or initiated by an operator intervention. A manual initiation of the procedure can be done, for example, if the operator considers this necessary on the basis of his experience.

alternative or what is preferred - in addition can be provided that the Procedure for a change one or more operating parameters, in particular in the event of a change properties of the textile machine and / or the amount of fiber supplied and / or the environmental conditions are initiated automatically. In principle, can each operating parameter for automatically initiating the procedure be used. The only requirement is that the respective Operating parameters during the production phase of the textile machine is monitored. Preferably the initiation takes place by the control device of the textile machine. Alternatively could the initiation by a parent Control device, for example by a system control, be initiated.

Especially the procedure is preferred when the feed rate changes of the default field supplied Fiber amounts or in case of a change the discharge speed of the withdrawn from the default field Fasergemenges initiated automatically. Such an initiation The procedure is particularly beneficial as the optimal and thus the desired starting point of the main purpose of the respective Speeds depends.

From Of particular importance here are, in particular, speed changes, which not by a control intervention for delay change be effected. Such speed changes, both on the feeder side as well as on the discharge side occur, for example, arise in a start phase of the textile machine and often too at a can change a downstream Kannenablagevorrichtung. Also can speed changes occur without distortion change, if that fed to the default field Amount of fiber directly from a fiber-producing textile machine, For example, from a card, is delivered. In a change the working speed of the fiber forming machine is it inevitably required, also the working speed of the drafting elements adjust the default field to the required synchronicity of the two Ensure textile machinery. This is especially true a modular or compound machine, in which the default field a fiber-generating Module is connected downstream. By way of limitation, it should be noted that an adaptation the normal point of use for a speed change only makes sense if the change the speed for a period that works longer is, as the time, for a procedure is needed to adjust the rule usage point.

As well it is advantageous if the procedure is automatically changed in the event of a quality change, which by an upstream the delay field arranged quality detection device is detected, preferably initiated by the controller. hereby can changes the amount of fiber presented in the frequency and / or amplitude range immediately upon their occurrence in the determination of the rule of application considered become. As a result, such an improvement in the quality of the the arrears field removed Fasergemenges be achieved.

Farther Is it possible, that the Procedure automatically at a through a downstream of the default field arranged quality detection device the textile machine detected quality change, preferably by the controller is initiated. This can be changes an operating parameter, which itself is not detected, taken into account become.

Also it is advantageous if the procedure, preferably by the control device, regularly, for example after a certain period of time or after a certain length of time has elapsed supplied Amount of fiber or after a certain length of the discharged fiber amount, is initiated. This can in particular a gradual deterioration the quality of the discharged Fiber quantities are avoided.

Advantageously, the procedure automatically resumes after a said initiation fetches until there is no further improvement in the quality of the amount of fiber discharged from the arrears field. A multiple sequential implementation of said procedure is particularly useful if one or more of the operating parameters change to a greater extent. Likewise, the multiple execution makes sense if the adaptation in the context of a single procedure takes place as a shift with a relatively small step size. In this case, it is ensured that the rule insert point is postponed until it is at least close to the optimal rule insertion point.

As well it is advantageous if by thick spots in the supplied amount of fiber caused jumps in the at least one quality-characterizing Size of the the arrears field discharged Fasergemenges not be used for the adjustment of the Regeleinsatzpunktes. Under a thick spot is a temporary increase in length-specific Mass of the supplied Fasergemenges be understood. Such thick places occur more or less frequently and by chance im fed Amount of fiber. In particular, if a thick patch only a small longitudinal extension for example, a few cm or dm, does not make sense, the Location of the Regeleinsatzpunktes on these only briefly present Adjust operating parameters. Thick spots can be detected by means of the upstream of the Arrears field arranged sensor device can be detected.

Becomes If a thick spot is detected, a pending procedure can be interrupted or re-initiated. The pending procedure will be at the earliest continued or restarted when the thick spot the place where the at least a quality-defining one Size is detected, has left. For example, a specific time delay can be specified for this purpose be.

Provided while the passage of a thick spot a measurement result of at least one quality characteristic Size was detected, so this is discarded and after the continuation of the procedure again detected. Similarly, the initiation of a pending procedure may be temporary be locked.

Especially It is advantageous if the respectively last used Regeleinsatzpunkt manually, cyclically and / or event-controlled in a non-volatile Memory is backed up. When manual backup is the current Rule point by an operator action in the non-volatile Transfer memory. On the other hand, the transfer takes place in a cyclic backup, for example after expiration of a certain time or after passing a certain length of the supplied or discharged Fiber quantities, automatically. Even with an event-driven backup the transfer takes place the current control point to the non-volatile memory automatically. This can be different triggering Be provided for events. For example, the backup can after a successful adaptation of the rule insert point or after the implementation be provided for a certain number of procedures performed.

By the backup of the used Regeleinsatzpunktes this is a temporary one Interruption of the operation of the textile machine, which, for example by a power failure, a required maintenance or by a disorder may be conditional, immediately available for reuse.

at a textile machine according to the invention the control device is designed so that in a production phase the textile machine, a procedure for the dynamic adjustment of the Regeleinsatzpunktes changing Operating parameters feasible is. The term operating parameter has already been related explained with the method according to the invention: The Adjustment of the Regeleinsatzpunktes is also here on the basis of the quality detection device determined measurement results the at least one quality-marking Size feasible.

advantageously, is the control device for automatically specifying a plurality formed by different test rule use points. Test control application points have to so not complicated be specified by an operator. Furthermore, the control device to evaluate the at the different predetermined test rule use points through the quality detection device determined measurement results educated.

Farther the textile machine for carrying out further embodiments of the inventive method be educated. It then results in the advantages described above.

Further Advantages of the invention are in the following embodiments described. Show it:

1 a composite machine comprising a card and a track;

2 an enlarged view of part of the route;

3 exemplifying the implementation of the method over time, and

4 a further example of carrying out the method according to the invention.

1 shows a textile machine 1 , more precisely, a spinning preparation machine 1 , which as a compound machine 1 comprising a card 2 and a stretch 3 is trained.

The card 2 is conventionally designed and has the following schematically illustrated work areas: A material supply 14 , a feeding device 21 , a lazy zone 15 , a drum 16 with associated mapping elements 17 , a customer zone 18 and a take-off device 19 , The essential task of a card 2 in short-staple spinning it is out of the card 2 presented fiber flakes to form a homogeneous amount of fiber FG in the form of a sliver.

In a conventional spinning preparation line this is done by the card 2 produced sliver in a container, a so-called pot, filed, which is then brought to a subsequent spinning preparation machine, in particular to a combing machine or a stretch.

In the 1 on the other hand, the card forms 2 and the track 3 a functional unit. That through the card 2 formed amount of fiber FG is directly, that is, without storage in a pot to the track 3 delivered. The amount of fiber FG in the direction of LR, we first by a sensor device 11 , then through a drafting system 4 and through a funnel 12 guided. Downstream of the funnel 12 The amount of fiber is determined by means of a tape storage device 5 in a spinning can 6 stored. Alternatively, the amount of fiber could go to the funnel 12 be supplied directly to another spinning preparation machine or a spinning machine.

The drafting system 4 has an input roller pair 7 , a middle roll pair 8th and a delivery roller pair 9 on. The speed of the mentioned roller pairs 7 . 8th . 9 increases in this order. As a result, the amount of fiber in both the Vorverzugsfeld VVF, which between the pair of input rollers 7 and the middle roll pair 8th is formed, as well as in the default field VF, wel ches between the middle roller pair 8th and the pair of delivery rollers 9 is formed, warped. The speed of the roller pairs 7 . 8th . 9 is by a controller 10 controllable. The control device 10 on the one hand is designed so that they are the speeds of all pairs of rollers 7 . 8th . 9 change in the same ratio, one speaks here of a change in the basic speed, and on the other hand, that they are the speed ratio of the center roller pair 8th and the delivery roller pair 9 can change. By contrast, the speed ratio of input roller pair remains constant 7 and middle roller pair 8th , In the embodiment of 1 Thus, the delay of the default delay field VVF is constant, which is why the Vorverzugsfeld is also assigned no Regeleinsatzpunkt, while the delay of the default field VF is changeable.

Conceivable would be too that the Delay in the upstream Vorverzugsfeld VVF is controllable in default or that at all there would be no default field VVF. Essential for the present invention is only that at least there is a default field with controllable delay.

A delay change, also called control intervention, carried out with the aim that the drafting system 4 supplied fiber amount FG _to even. For this purpose, the length-specific mass of the drafting system 4 supplied fiber amount FG _to through the sensor device 11 partially recorded. The individual measured sections usually have a length of a few mm. For each section measured is by the sensor device 11 generates a measured value MW, which then sends to the control device 10 is transmitted. To generate the measured values MW, the sensor device 11 as indicated, for example, include a Tastwalzenpaar. However, sensor devices which operate according to other physical principles are also possible. Furthermore, it is conceivable that correction methods, for example for eliminating disturbances, are used when determining a measured value. Based on a measured value MW, it is possible by the control device 10 to determine a corresponding height of the delay change. This is not precluded if, in addition, other data are used to determine the amount of the delay change.

A control in which the measuring location or the sensor device 11 before the drafting system is also called open-loop control. In such a control, it is necessary, the running distance or the running time of a portion of the fiber amount FG _to from the sensor device 11 up to the point where the control intervention is to take place. Running distance and transit time are linked _to each other via the speed of the supplied fiber band FG.

The location where the control action is to take place with respect to a certain portion of the fiber amount is called the rule usage point. It is usually located in the upstream third of the default field VF. The exact location of the Regeleinsatzpunktes can by a set value the control device 10 be specified. Since the optimal position of the Regeleinsatzpunktes can not be determined analytically with sufficient accuracy, according to the prior art, a default or set value for the Regeleinsatzpunkt determined in a pre-operational adjustment or test run and for a longer period, for example until a game change, constant held.

In contrast, according to the present invention, at least once in a production phase of the textile machine 1 performed a procedure for dynamically adapting the rule insert point. To this end, the quality of the drafting zone VF leaving fiber mixture FG is _from by means of a quality detector 12 . 13 detected. This includes the downstream of the default field arranged funnel 12 , the measuring funnel 12 is formed, and an evaluation unit 13 , which is designed for the evaluation of a signal S, which from the measuring funnel 12 is generated and corresponds to a parameter, for example with the length specific mass of the fiber mixture discharged _from FG. The evaluation unit 13 transforms the signal S into measurement results of at least one quality-determining variable, for example the CV% value or a variable derived therefrom, and transmits these measurement results M to the control device 10 , Here they can be used in accordance with the invention for adapting the control application point RP.

2 shows an enlarged view of a portion of the track 3 , The drafting zone the fiber mixture FV supplied _to FG consists of successively arranged portions. The reference AB _n denotes the section which is measured by the sensor device in the moment shown. Downstream of section AB _n is section AB _n-1 , upstream section AB _{n + 1} . For reasons of simplification, the further sections are not designated by reference symbols. For each of the sections, at least one measured value MW is determined, which corresponds to the length-specific mass of the respective section and to the control device 10 is transmitted. When the measured section AB _{n reaches} the control point RP, ie the position denoted AB ' _n , the control device 10 causes a corresponding control intervention. If the section AB _{n has,} for example, a length-specific mass lying above the average, then an increase in the delay to equalize the fiber quantity FG is initiated.

The location of the Regeleinsatzpunktes RP is usually as distance A of the Regeleinsatzpunktes of the sensor device 11 specified. The control device 10 is formed so that the distance A in a certain, indicated by a double arrow area, can be predetermined. The predetermined position of the control application point RP and the predetermined distance A is critically _on the quality of the discharged from the drafting zone VF fiber mixture FG. The optimum position of the control point RP, in short the optimal control point RP depends on a variety of operating parameters. These operating parameters also change continuously during the production phase of the textile machine 1 , According to the invention, therefore, a procedure is provided in which during the production of the textile machine the Regeleinsatzpunkt RP is adapted to changing operating conditions. Within the scope of such a procedure, at least one measured value M of a quality-determining quantity of the discharged fiber quantity FG _{ab is} determined at different test rule application points. These measured values M are determined by the control device 10 evaluated and form the basis for the specification of a new Regeleinsatzpunktes RP after completion of the procedure.

Such a procedure can be initiated manually, periodically and / or event-oriented. Such a triggering event _can be, for example, a change in the speed of the fed to the drafting zone the fiber mixture FG, wherein the speed G, for example, addition of the sensor device 11 detected and to the controller 10 can be transmitted.

Another possible triggering event may be _from a change in the quality of the discharged from the drafting zone the fiber mixture FG. For this purpose, it is only necessary to acquire measured values M of the at least one quality-determining quantity of the discharged fiber quantity FG _from outside a procedure and to the control device 10 to convey. Also, a procedure may be initiated when a change in the quality of the drafting zone FV supplied fiber mixture FG _to occur. For this purpose, a quality detection device 20 be provided, which calculates the quality of the supplied fiber mixture _to FG based on with the mass of the supplied fiber mixture FG corresponding _to measured values and MW to the control device 10 transmitted.

Furthermore, a non-volatile memory 22 to secure the most recently used Regeleinsatzpunktes R ₀ , R ₁ R ₂ R ₃ shown. As a result, the last used Regeleinsatzpunkt R ₀ , R ₁ R ₂ R _{3 is} also after a restart of the textile machine 1 for immediate further use. It then does not have to resort to a default value. The non-volatile memory 22 may be in the controller as shown 10 the Tex tilmaschine be integrated or formed separately.

The timing of an adjustment of the rule use point is in 3 exemplified. On the common time axis t are in the upper part of the distances A of the Regeleinsatzpunkte RP and the test rule use points T of the sensor device 10 and in the lower section, the CV% values of the discharged fiber mixture _from FG as well as by the quality detection means 12 . 13 recorded measured values M shown. In the initial situation, a Regeleinsatzpunkt RP _{0 is} given, whose distance from the sensor device 10 as an example 1000 mm. With the start of the procedure P ₁ , a test rule entry point T _{11 is} specified, which corresponds to the previous rule entry point RP ₀ . In this case, a measurement result M ₁₁ is detected with the value 2.1. At a further downstream test control application point T ₁₂ , a further measurement result M ₁₂ with the value 2.15 is detected. Subsequently, a further upstream test control point T _{13 is} temporarily set, wherein a further measurement result M _{13 is} determined to be 2.02. Thus, within the procedure P _1, three measurement results M have been determined, which can now be evaluated.

Preferably, the evaluation is carried out by a simple comparison of the amounts of the measurement results M. It is readily apparent that in the present case, the measurement result M ₁₃ provides the best, because the smallest CV% value. It is also known that this measurement result M _{13 was determined} at the test rule use point T ₁₃ . The new Regeleinsatzpunkt RP ₁ can now be done by a shift of the previous Regeleinsatzpunktes RP ₀ by a constant amount .DELTA.A. The direction of the shift is upstream, since the test control point T _{13 is located} upstream of the previous Regeleinsatzpunktes RP ₀ . The new control point RP ₁ has a distance A of 997 mm from the sensor device 11 on.

Without or with a small time interval, another procedure P _{2 is} performed. The measurement results M ₂₁ , M ₂₂ and M _{23 determined here} lead to a further upstream displacement of the previous control application point RP ₁ by the constant increment ΔA. After the procedure P ₂ , a control point RP ₂ with a distance of 994 mm to the sensor device 11 specified.

In the context of the subsequent procedure P ₃ , three test rule entry points T ₃₁ , T ₃₂ , and T ₃₃ are again used. However, since there is no further improvement in the measurement results M of the CV% value, the previous control application point RP _{2 is} retained as the new control application point RP ₃ . The new rule insert RP ₃ can now be maintained until a new procedure manually, routinely, z. B. after a production time of 1 hour, or is initiated event-driven.

In the embodiment of 3 For example, by performing a procedure P ₁ , P ₂ , P ₃ three times, the CV value can be improved by 0.1%. Only briefly, namely in the determination of the measurement result M ₁₂ , the CV% value is increased in the short term by 0.05%. All CV% jumps caused by the procedure are less than or equal to 0.13%. Therefore, it is readily possible to use the fiber mixture generated during or between procedures P _1, P _2, P ₃ FG _from readily pass. So no committee is produced.

4 shows an example of a time course of a preferred embodiment of the method according to the invention. Shown is first a modified procedure P ' ₁ , which comprises carrying out a first sequence S ₁₁ and carrying out a second sequence S ₂₂ . During the execution of the first sequence S ₁₁ , each of the test rule entry points T ₁₁ , T ₁₂ and T _{13 associated} with the procedure P ' ₁ is temporarily set after a predetermined setting pattern. Thus, first the test rule use points T ₁₁ , which corresponds to the previous Regeleinsatzpunkt RP ₀ , then the downstream of the previous Regeleinsatzpunktes RP ₀ Testregeleinsatzpunkt T ₁₂ and then the upstream of the previous Regeleinsatzpunktes RP ₀ Testregeleinsatzpunkt T ₁₃ set. However, another predetermined adjustment pattern or a randomly generated adjustment pattern could be used.

However, it is essential that at least one single measurement result, namely the individual measurement results EM ₁₁ , EM ₁₂ and EM _13, be determined for each of the test rule application points T ₁₁ , T ₁₂ and T _{13 associated} with the procedure P ' ₁ .

When carrying out the second sequence S ₂₂ , the same test control application points T ₁₁ , T ₁₂ and T ₁₃ are set again and further individual measurement results EM _'11 , EM' ₁₂ and EM _{'13 are} determined. Thus lie for the test control application point T _11, the Einzelmeßergebnisse EM ₁₁ and EM _'11, for the test control application point T _12, the Einzelmeßergebnisse EM ₁₂ and EM' _12, and for the test control application point T _13, the Einzelmeßergebnisse EM ₁₃ and EM _'13 in front.

The said test control application point T ₁₁ associated Einzelmeßergebnisse EM ₁₁ and EM _'11 in soft amount slightly from one another. The reason for this is, for example, errors in the acquisition or processing. However, these and other errors are at least partially compensated for in their effect in the adaptation of the control application point RP ₀ by the measurement result used for this purpose M _{'11 is formed} from the two individual measurements EM ₁₁ and EM' ₁₁ , these being averaged or what is in 4 not shown, can be added. In an analogous manner, the measurement results M _'12 and M' _{13 are} formed. The total of three available measurement results M _'11 , M' ₁₂ and M _'13 can then be used to adapt the Regeleinsatzpunktes RP ₀ as already explained above.

The above statements apply mutatis mutandis to the also in the 4 shown procedure P ' ₂ . If necessary, further procedures, not shown, may follow. It should also be noted that within a procedure, three or more sequences may be performed. As a result, the adaptation of the Regeleinsatzpunktes be further improved.

The present invention is not limited to the illustrated and described embodiments. There are modifications within the scope of the claims at any time. In particular, it should be noted that the numerical values given are exemplary in nature. In addition, the position and the number and also, if appropriate, the order of the predetermined test rule application points can be varied. Furthermore, the measurement results in 3 also be average values from different measurement results recorded immediately after one another. Likewise, in 4 the individual measurements are based on averaging. Also, the invention can be used in a Stecke, which is presented a variety of each withdrawn from tins slivers.

Claims (41)

Method for controlling the draft of a drafting field (VF) of a textile machine which preferably processes short staple fibers ( 1 ), in particular a spinning machine, for example a ring spinning or rotor spinning machine, or a spinning preparation machine ( 1 ), for example a card ( 2 ) or route ( 3 ), or a compound machine ( 1 ), for example, a card ( 2 ) and a route ( 3 ) in which the length-specific mass of a section (AB _n-1 , AB _n , AB _{n + 1} ) of a fiber quantity (FG _zu ) supplied to the default field (VF) is determined by means of a sensor device arranged upstream of the default field (VF) ( 11 ) is detected; and a control action necessary to equalize the length-specific mass of the supplied fiber quantity (FG _zu ) is carried out in the delay of said default field (VF) on the basis of the detected length-specific mass of the section (AB _n-1 , AB _n , AB _{n + 1} ), as soon as possible the section (AB _n-1 , AB _n , AB _{n + 1} ) reaches a location specified as a control point (R ₀ , R ₁ R ₂ R ₃ ); characterized in that at least once in a production phase of the textile machine ( 1 ) a procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) for dynamically adapting the control application point (R ₀ , R ₁ , R ₂ , R ₃ ) to changing operating parameters, in particular to changing characteristics of the Textile machine ( 1 ) And / or of the supplied fiber mixture (FG _to) and / or to changing environmental conditions, is carried out, wherein a plurality (of different test control application points T _11, T _12, T _13; T _21, T _22, T _23; T _31, T ₃₂ , T ₃₃ ) is used to produce at least one measurement result (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 ; M' ₂₁ , M _'22 , M' ₂₃ ) of at least one quality-defining quantity, for example the CV% value or a quantity derived therefrom, of the amount of fiber (FG _ab ) discharged from said default field (VF) and wherein the adaptation of the control application point (R ₀ , R ₁ , R ₂ , R ₃ ) based on an evaluation of the determined measurement results (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M _33; M _'11, M' _12, M _'13; M' _21, M _'22, M' ₂₃₎ is performed. Method according to claim 1, characterized in that a said test control point (T ₁₁ ; T ₂₁ ; T ₃₁ ) corresponding to the previous control point (R ₀ ; R ₁ ; R ₂ ) is used. Method according to one of the preceding claims, characterized in that at least one test control application point (T ₁₃ ; T ₂₃ ; T ₃₃ ) located upstream of the previous control application point (R ₀ ; R ₁ ; R ₂ ) and at least one downstream of the previous control application point (R ₀ ; R ₁ ; R ₂ ) located at the test control point (T ₁₂ ; T ₂₂ ; T ₃₂ ). Method according to one of the preceding claims, characterized in that at least one pair of test control application points (T ₁₂ , T ₁₃ ; T ₂₂ , T ₂₃ ; T ₃₂ , T ₃₃ ) is used which is symmetrical to the previous control application point (R ₀ ; R ₁ ; R ₂ ) is arranged. Method according to any one of the preceding claims, characterized in that said test control points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) are chosen such that there is a substantial deterioration the quality of the fiber discharged from the arrears field (FG _ab ) is avoided during its use. Method according to one of the preceding claims, characterized in that said test control points (T ₁₁ , T ₁₂ , T ₁₃ ; T ₂₁ , T ₂₂ , T ₂₃ ; T ₃₁ , T ₃₂ , T ₃₃ ) are selected such that at least one quality-defining Size, for example the CV% value or a quantity derived therefrom, of the amount of fiber discharged from the arrears field (FG _ab ) by at most 15%, preferably at most 10%, more preferably at most 5%, particularly preferably at most 2.5%, is changed. Method according to one of the preceding claims, characterized in that the said test control application points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) are selected such that their maximum distance from the previous rule insert point (R ₀ ; R ₁ ; R ₂ ) is at most 20%, preferably at most 15%, particularly preferably at most 10%, particularly preferably at most 5% of the length of the default field. Method according to one of the preceding claims, characterized in that the said test control application points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) are selected such that their maximum distance from the previous rule insert point (R ₀ ; R ₁ ; R ₂ ) is at most 12 mm, preferably at most 9 mm, particularly preferably at most 6 mm, particularly preferably at most 3 mm. Method according to one of the preceding claims, characterized in that the adaptation based on a comparison of the amounts of the determined measurement results (M ₁₁ , M ₁₂ , M ₁₃ ; M ₂₁ , M ₂₂ , M ₂₃ ; M ₃₁ , M ₃₂ , M ₃₃ ; M _'11 , M' ₁₂ , M _'13 ; M' ₂₁ , M _'22 , M' ₂₃ ). Method according to one of the preceding claims, characterized in that the adaptation takes place in such a way that the one of the test control application points (T ₁₁ , T ₁₂ , T ₁₃ ; T ₂₁ , T ₂₂ , T ₂₃ ; T ₃₁ , T ₃₂ , T ₃₃ ), to the best of said measurement results (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 , M' ₂₁ , M _'22 , M' ₂₃ ) according to the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is used as the control point (R ₁ ; R ₂ ; R ₃ ). Method according to one of the preceding claims, characterized in that the step size (ΔA) is smaller than the maximum distance of the said test control application points (T ₁₁ , T ₁₂ , T ₁₃ ; T ₂₁ , T ₂₂ , T ₂₃ ; T ₃₁ , T ₃₂ , T ₃₃ ) from the previous rule insert point (R ₀ ; R ₁ ; R ₂ ). Method according to one of the preceding claims, characterized in that the direction of displacement of the control application point (R ₀ , R ₁ , R ₂ , R ₃ ) based on the relative position with respect to the previous Regeleinsatzpunktes (R ₀ ; R ₁ ; R ₂ ) of that of Test control application points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) which are best suited to the said measurement results (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 , M' ₂₁ , M _'22 , M' ₂₃ ). Method according to one of the preceding claims, characterized characterized in that Step size (ΔA) at the most 10%, preferably at most 7.5%, most preferably at most 5%, more preferably at most 2.5% of the length of the default field (VF). Method according to one of the preceding claims, characterized characterized in that Step size (ΔA) at the most 6 mm, preferably at most 4.5 mm, more preferably at most 3 mm, more preferably at most 1.5 mm. Method according to one of the preceding claims, characterized in that, within a said procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ), at least one of said test rule insert points (T ₁₁ , T ₁₂ , T ₁₃ ; T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) several individual measurements (EM ₁₁ , EM _'11 , EM ₁₂ , EM' ₁₂ , EM ₁₃ , EM _'13 , EM ₂₁ , EM' ₂₁ , EM ₂₂ , EM _'22 , EM ₂₃ , EM' ₂₃ , EM ₃₁ , EM _'31 , EM ₃₂ , EM' ₃₂ , EM ₃₃ , EM _'33 ) of at least one quality-determining quantity, from the sum or mean of which the respective measurement result ( M _'11 , M' ₁₂ , M _'13 ; M' ₂₁ , M _'22 , M' ₂₃ ) is determined. Method according to claim 15, characterized in that within a said procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) several sequences (S ₁ , S ' ₁ , S ₂ , S' ₂ ) are carried out in which within each of the sequences (S ₁₁ , S ₁₂ , S ₂₁ , S ₂₂ ) each test control insertion point (T ₁₁ , T _{12. 2} ) belonging to the respective procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) at least once to determine at least one individual measurement value (EM ₁₁ , EM _'11 , EM ₁₂ , EM' ₁₂ , EM ₁₃ , EM _'13 EM ₂₁ , EM _'21 , EM ₂₂ , EM' ₂₂ , EM ₂₃ , EM _'23 , EM ₃₁ , EM' ₃₁ , EM ₃₂ , EM _'32 , EM ₃₃ , EM' ₂₃ ). Method according to one of the preceding claims, characterized in that the adaptation as a function of the evaluation of said measurement results (M ₁₁ , M ₁₂ , M ₁₃ ; M ₂₁ , M ₂₂ , M ₂₃ ; M ₃₁ , M ₃₂ , M ₃₃ ; M _'11 , M' ₁₂ , M _'13 ; M' ₂₁ , M _'22 , M' ₂₃ ) takes place either as confirmation of the previous control application point (R ₀ , R ₁ , R ₂ ) or as displacement with a predetermined increment (ΔA) , Method according to claim 17, characterized in that at least within a said sequence (S ₁₁ , S ₁₂ ; S ₂₁ , S ₂₂ ) the order of the test rule insertion points (T ₁₁ , T ₁₂ , T ₁₃ ; T ₂₁ , T ₂₂ , T ₂₃ ; T ₃₁ , T ₃₂ , T ₃₃ ) corresponds to a predetermined adjustment pattern. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is determined by a control device ( 10 ) of the textile machine ( 1 ) is controlled. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is initiated manually. Method according to one of the preceding Claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) when changing one or more operating parameters, in particular when changing properties of the textile machine ( 1 ) and / or the amount of fiber supplied (FG _zu ) and / or the environmental conditions, automatically, preferably by the control device ( 10 ) is initiated. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) in the event of a change in the feed rate of the fiber quantity (FG _to ) fed to the drafting field (VF) and / or a change in the discharge rate from the default field (VF) discharged Fasergemenges (FG _ab ) automatically, preferably by the control device ( 10 ) is initiated. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is carried out at a quality detection device (5) arranged upstream of the default field (VF) ( 11 . 20 ) of the textile machine ( 1 ) quality change automatically, preferably by the control device ( 10 ) is initiated. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is performed at a quality detection device (5) arranged downstream of the default field (VF) ( 12 . 13 ) of the textile machine ( 1 ) quality change automatically, preferably by the control device ( 10 ) is initiated. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ), preferably by the control device ( 10 ), regularly, for example, after a certain period of time or after a certain length of the supplied fiber amount (FG _to ) or after a certain length of the discharged Fasergemenges (FG _ab ), is initiated. Method according to one of the preceding claims, characterized in that the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is repeated automatically after said initiation until there is no further improvement in the quality of the Arrears field (VF) deduced fiber amount (FG _ab ) results. Method according to one of the preceding claims, characterized in that cracks caused by thickening in the amount of fiber supplied (FG _to ) in the at least one quality-indicative size of the fiber quantity (FG _ab ) discharged from the drafting zone (VF) do not adapt to the control application point (R ₀ , R ₁ , R ₂ , R ₃ ) are used. Method according to one of the preceding claims, characterized in that a pending procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is interrupted or repeated upon the occurrence of a thick spot in the amount of fiber supplied (FG _to ). Method according to one of the preceding claims, characterized in that the initiation of a not yet pending procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) is temporarily blocked in the case of a thick spot in the supplied fiber quantity (FG _zu ). Method according to one of the preceding claims, characterized in that the respectively last used Regeleinsatzpunkt (R ₀ , R ₁ R ₂ R ₃ ) manually, cyclically and / or event-controlled in a non-volatile memory ( 22 ) is secured. Textile machine ( 1 ), preferably short staple fiber processing textile machine ( 1 ), in particular spinning machine, for example ring spinning or rotor spinning machine, or spinning preparation machine ( 1 ), for example carding ( 2 ) or route ( 3 ), or compound machine ( 1 ) comprising, for example, a card ( 2 ) and a route ( 3 ), with a delay field (VF), which for the homogenization of the length-specific mass of a supplied fiber amount (FG _zu ) has a controllable delay, a sensor device ( 11 ) for generating measured values (MW) which respectively correspond to the length-specific mass of a section (AB _n-1 , AB _n , AB _{n + 1} ) of the fiber quantity (FG _zu ) supplied to the drafting field (VF), to a control device ( 10 ) for controlling the delay of the default field (VF) on the basis of a said measured value (MW) of the sensor device ( 11 ), wherein the control device ( 10 ) is formed so that a required control intervention in the delay of the default field (VF) takes place as soon as the corresponding with the measured value (MW) section (AB _n-1 , AB _n , AB _{n + 1} ) as a Regeleinsatzpunkt (R ₀ , R ₁ R ₂ R ₃ ) predetermined location and a downstream of the default field (VF) arranged quality detection device ( 12 . 13 ) for determining measurement results (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ ) of at least one quality-defining variable, for example the CV% value or a variable derived therefrom, of the fiber amount (FG _ab ) discharged from the default field (VF), characterized in that the control device ( 10 ) in a production phase of the textile machine ( 1 ) for the automatic execution of a procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) for the dynamic adaptation of the control application point (R ₀ , R ₁ R ₂ R ₃ ) to changing operating parameters, in particular to changing properties of the textile machine ( 1 ) and / or the amount of fiber delivered (FG _{zu zu} ) and / or to changing environmental conditions, on the basis of the quality detection device ( 12 . 13 ) (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 , M' ₂₁ , M _'22 , M _'23 ) of the at least one quality-characterizing size is formed. Textile machine ( 1 ) according to claim 31, characterized in that the control device ( 10 ) for the automatic specification of a plurality of different test rule application points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) and for the evaluation of the different test rule insertion points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ) by the quality detection device ( 12 . 13 ) (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 , M' ₂₁ , M _'22 , M _'23 ) is formed. Textile machine ( 1 ) according to claims 31 to 32, characterized in that the control device ( 10 ) for specifying such test rule insertion points (T ₁₁ , T ₁₂ , T ₁₃ , T ₂₁ , T ₂₂ , T ₂₃ , T ₃₁ , T ₃₂ , T ₃₃ ), in which a substantial deterioration of the quality of the material from the drafting field (VF ) discharged fiber amount (FG _ab ) is avoided during their use. Textile machine ( 1 ) according to claims 31 to 33, characterized in that the control device ( 10 ) for comparing the magnitudes of the measurement results (M ₁₁ , M ₁₂ , M ₁₃ , M ₂₁ , M ₂₂ , M ₂₃ , M ₃₁ , M ₃₂ , M ₃₃ , M _'11 , M' ₁₂ , M _'13 M _'21 , M' ₂₂ , M _'23 ) is formed. Textile machine ( 1 ) according to claims 31 to 34, characterized in that the control device ( 10 ) is adapted to adapt the Regeleinsatzpunktes (R ₀ , R ₁ R ₂ R ₃ ) by a shift with a predetermined increment (.DELTA.A). Textile machine ( 1 ) according to claims 31 to 35, characterized in that the control device ( 10 ) for the automatic initiation of the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) in the event of a change in at least one operating parameter, in particular in the case of a change in properties of the textile machine ( 1 ) and / or the amount of fiber supplied (FG _zu ) and / or the environmental conditions is formed. Textile machine ( 1 ) according to claims 31 to 36, characterized in that the control device ( 10 ) for automatic initiation of the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) in the event of a change in the entry speed of the fiber quantity (FG _zu ) fed to the default field (VF). Textile machine ( 1 ) according to claims 31 to 37, characterized in that the control device ( 10 for the automatic initiation of the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) at a quality detection device arranged through an upstream of the default field (VF) ( 11 . 20 ) of the textile machine ( 1 ) is formed quality change. Textile machine ( 1 ) according to claims 31 to 38, characterized in that the control device ( 10 ) for the automatic initiation of the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ) at a quality detection device arranged downstream of the default field (VF) ( 12 . 13 ) of the textile machine ( 1 ) is formed quality change. Textile machine ( 1 ) according to claims 31 to 39, characterized in that the control device ( 10 ) for the regular, automatic initiation of the procedure (P ₁ , P ₂ , P ₃ , P ' ₁ , P' ₂ ), for example after a certain period of time or after a certain length of the supplied (FG _to ) or after a certain length of the discharged Fasergemenges (FG _ab ) is formed. Textile machine ( 1 ) according to claims 31 to 40, characterized in that a non-volatile memory ( 22 ) is provided to secure the most recently used Regeleinsatzpunktes (R ₀ , R ₁ R ₂ R ₃ ).