EP1162295A1 - Method for operating a creel and creel for a winding machine - Google Patents

Abstract

To draw yarns off their bobbins at a creel, for a warp winder, the actual tension of each yarn is monitored constantly between leaving the creel and reaching the winder, for comparison with a nominal value. On a deviation, the individual yarn brake is controlled by its drive motor (20) to bring the actual yarn tension value to the nominal level. In drawing yarns from creel bobbins for a warp winder, the yarns pass through an initial tensioning unit (16,17) in front of the brake, in the direction of yarn travel. They are given an additional braking action according to the measured actual tension value or they are set at a constant base level. The warp winder has a monitor to register the tension of the band of warp yarns, shortly before the winding point, to give an actual value for comparison with a nominal tension value. On a deviation, all the yarn brakes are operated simultaneously under control, to bring the actual tension value to the nominal level. An Independent claim is included for a bobbin creel with at least one yarn tension monitor (9) for each yarn, between the nearest bobbins at a side of the creel and the winding beam of the warp winder (3), to give a constant measurement of the actual yarn tension values. The actual yarn tension values are processed in a comparator (30,30') for comparison with a nominal value. On a deviation, the motors of the yarn brakes are activated to correct the yarn tensions. Preferred Features: The tension monitors register a force by a stretch component across the yarn, to measure the applied force on it as it deflects the yarn path. A number of yarn tension monitors are in a row for each level of the bobbins in the creel, with a separate housing around each monitor. Each yarn passes through an individual initial tension unit, in front of the yarn brake, where an additional braking force is applied independently of the yarn brake or at a base setting. The initial tensioning unit has an eyelet tensioner (16) and/or a crepe tensioner (17) with adjustable units around it. Identical initial tensioners are set by a common drive motor for a vertical row of bobbins, or each has an independent motor. The yarn brakes are operated by step motors, to act on the yarn brakes through self-locking gearings. The yarn brake deflects the yarn path at an adjustable angle, or it is a plate brake (18) with an adjustable spring force on the plates. Each bobbin has an individual yarn monitor to register yarn breaks or control the yarn movement path. Each bobbin point has an optical signal unit to identify the bobbin station and/or assist bobbin insertion. All the electrical units at the bobbins, and especially the drive motors for the yarn brakes, are linked to a central control through serial interfaces. The yarn tension monitors are placed in front of the winding point for the warps at the winder, and between a lease and a warping reed to gather the yarns together. The plates of the yarn brakes in a vertical row are rotated by a common drive motor or by separate motors. All the brake motors are controlled by the yarn tension monitors or the yarn break monitors, so that a yarn brake is deactivated when it does not carry a yarn.

Description

The invention relates to a method for operating a creel for a winding system according to the top handle of claim 1. With such a method, one is as optimal as possible Tension equalization of all threads on a creel sought because the different lengths of the threads between the winding units and winding machine and the associated thread guide without corresponding compensation to different thread tensions would lead. The consequence of this would be an uneven one Winding density.

EP-A 319 477 describes a device for voltage compensation the threads on a creel became known which the thread brakes of the vertical rows of winding units can be loaded to different extents are. The control rod is activated by drive motors, which receive control signals from a processor. Measured becomes the actual value of the thread tension of an entire thread assembly using a measuring roller shortly before winding. A consideration of the thread tension of individual threads or individual groups of threads are not possible.

DE-A 195 46 473 discloses a method for controlling Winding devices for thread coulters. There is also one here Tension measurement of the thread assembly shortly before winding up to by means not shown on the tension of the threads to act on the creel. With the help of a across the thread bandage mobile test car is the consecutive one Tension measurement of individual threads in a predetermined Time interval possible. A mean voltage value is formed from this, which is accordingly the common tensioning of all threads. With this procedure an individual regulation of Individual threads cannot be realized because not every thread can be scanned at the same time. Other disadvantages of this Procedures are that the interval measurement at today driven winding speeds is too slow and also each the measured thread is mechanically loaded by the measuring device becomes what an individual thread tension change causes.

DE-A 44 18 729 also relates to a device for regulating the thread tension in a creel. This facility has one for each bobbin holder directly at the winding point Brake rotor on. Serves as a sensor for the thread tension a tensioning lever which is acted upon by the unwound thread becomes. A fluid pressure working grips each coil holder Loading device on the clamping lever, the fluid pressure is jointly adjustable for all loading devices. The individual control of the thread tension can thus be achieved through a general setting options of all thread tensioners can be overlaid. A disadvantage of this device, however, is that the control loop is limited to the winding unit. This arrangement is not suitable for a creel Overhead trigger. The braking is directly on the coil holder also not suitable for all work processes and the different Running length of the threads between the winding unit and the winding machine remains unconsidered.

Finally, DE-U-296 08 169 discloses a winding device for threads of creels, in which a measuring device is arranged to determine thread tension in threads, wherein the central adjustment of the pre-wrapping rods assigned to the winding units is controllable according to the measurement result. The measuring device consists of individual pressure measuring bars that support a large number of threads each. This is surveillance the tension in the single thread is also not possible, apart from the fact that the pressure measuring strips each only the can apply the outermost threads of a thread assembly.

It would also be generally desirable to use a creel with different types of threads, e.g. various Thread qualities, thread thicknesses or thread colors, the thread tension to adapt to the individual thread types. Such individual consideration of yarn types was previously not possible at all.

It is therefore an object of the invention, a method of the beginning to create the type mentioned, with simple means a optimal and versatile control of the entire winding process allowed. Thereby, with low energy consumption modern electronic means can be used. The gate control to as many different operating conditions as possible be customizable. This object is achieved according to the invention solved a method having the features in claim 1.

By continuously measuring the actual value of the thread tension all threads is the tension behavior of the threads on the whole Gate can be detected with minimal time delay. The measurement is done thereby in the area between leaving the gate and the winding on the winding machine, which ensures that the different run lengths and deflections of the threads be taken into account. The control process can be for individual threads or individually designed for certain groups of threads, which makes the gate versatile. The mechanical The function and arrangement of the thread brakes plays only one subordinate role. Through this process, thread influences, such as different thread thicknesses, thread structure, others Material influences and influences at the take-off point in the creel balanced.

According to the method according to the invention, each individual thread brake activated with a drive motor assigned to it. This is with the miniaturized that are offered at low cost today Drives easily possible. So everyone can for the first time individual threads on the creel can be regulated individually.

It is also possible to use a thread group with the same material properties for each thread an identical target thread tension value and the measured actual thread tension within the thread group to the specified thread tension TARGET value by adjusting the thread tension regulation

Further procedural advantages can be achieved if the threads in the thread running direction at least before each thread brake a pretensioner device with an additional braking force be applied, which is set as the basic value or which is set depending on the measured actual value becomes.

Depending on the material properties, such as quality, rotation, The strength and tendency of the threads to curl, etc., must be different Pretensioners are used to ensure trouble-free To ensure that the threads run off. The pretensioners on a loop basis, such as eyelet pretensioners, Crepe pretensioners, etc. can be used individually or in rails with a Drive motor can be adjusted to ensure optimal thread flow to obtain.

In addition, it is possible to compensate for the different running lengths of the threads or the thread groups (gate length compensation) exclusively with the aid of the pretensioner devices. In this way, the subsequent thread brakes are relieved of this compulsory compensation and they can develop their full efficiency with regard to their braking force.
In addition, the above-mentioned pretensioner devices can also be used to increase the thread tension before entering the thread brakes, the thread tension also being regulated individually or in groups together with the thread brake. These pretensioners can also be used as the only means for voltage distribution. No additional thread brakes would be required, which is very inexpensive. The term "thread brake" as used here thus also encompasses all pretensioning devices in the broadest sense.

In certain cases it is advantageous if on the winding machine the tensile force of the whole combined into a thread band the threads in the area in front of the winding point as the actual tape tension measured and compared with a Tension value and if all thread brakes are found when a deviation is found can be adjusted simultaneously in such a way that the actual strip tension value approximates the target tension. This additional regulation of the tape tension is superimposed on the regulation of the thread tension described above, with all voltage changes between the thread tension sensors and the winding point become.

The invention also relates to a creel for a winding system, that in terms of device through the features in Claim 4 is marked. With such a creel can individually adjust the thread tension on each individual thread Thread tension sensors are measured.

There are basically different principles of thread tension sensors known. As particularly advantageous for the inventive However, sensors have proven to be useful for this purpose Force measuring device with a responsive to elongation Have measuring element, the occurring across the thread Force on the deflected thread is measurable. Such a thread tension sensor is described for example in DE-A 197 16 134, the contents of their disclosure are hereby accepted in their entirety becomes. The sensor is compact with a small outside dimension and relatively insensitive to pollution. The piezoresistive working measuring bridge requires very little energy, which at the possibly large number of sensors is a not inconsiderable one Role play. The measurement is also immediately linear with the movement of the sensor, giving the possibility of Measurement errors is reduced.

The thread tension sensor can also be functionally special simple way as thread monitor for thread running or thread break control insert the thread. Falls below or exceeds the thread tension of one or more threads the lower or upper control range, a warning signal is issued or the The winding system can be stopped automatically.

The functions of the thread tension sensor described can in addition to the use for thread tension control only as Monitoring function in a winding system for the entire thread group be used.

Be particularly advantageous as a drive motor for the thread brakes (Normal pressure thread brake e.g. disc brake, wrap thread brake, dynamic thread brake, etc.) or the mentioned Preload devices (eyelet pretensioners, crepe pretensioners) Stepper motors used, which have a self-locking Act on the gearbox on the brake fluid. The advantage of this Stepper motors is that they only operate during activation, but do not absorb energy in the holding phase. In order to energy consumption can be reduced significantly. On self-locking drive motor, for example with a worm gear or a self-locking spindle drive ensures that a position approached by the stepper motor is held becomes. The advantage of the stepper motor is that at any time the position of the thread brakes or the position of the pretensioners are known and can be calibrated.

Each winding unit can have at least one signal component, in particular a thread monitor for thread run or thread break control of the thread and / or an optical signaling means for identification assigned to the winding units or as a slip-on aid his. The thread monitoring can be done according to various known Functional principles take place, e.g. the mechanical Falling pin principle, Hall sensors, optical monitoring means etc. A signaling means to facilitate the assembly of a Coil gate has become known, for example, from EP-A-329 614.

All electrically activatable means assigned to a winding unit, especially the drive motors for the thread brakes, however also, the signal components mentioned can be via common signal lines to be activated. For this purpose they survive serial interfaces with a central control device in Active connection. Obviously, this eliminates the need for a complex one Wiring the individual components.

Fig. 1

eine stark schematisierte Seitenansicht auf ein Spulengatter mit den Merkmalen der Erfindung,

Fig. 2

eine Draufsicht auf das Spulengatter gemäss Fig. 1,

Fig. 3

eine Draufsicht auf eine einzelne Spulstelle mit Vorspannereinrichtungen und mit einer Tellerbremse,

Fig. 4

eine perspektivische Darstellung eines Stützprofils mit darin angeordneten Tellerbremsen, in Gesamtansicht und im Detail,

Fig. 5

eine schematische Seitenansicht einer Spulstelle mit einem Ösenvorspanner, einem Crepevorspanner und mit einer Tellerbremse,

Fig. 6

eine schematische Seitenansicht einer Spulstelle mit einem Ösenvorspanner und mit einer Umschlingungsfadenbremse,

Fig. 7

eine Prinzipdarstellung eines Spulengatters mit fadenweiser Spannungsmessung, einzeln angetriebenen Tellerbremsen und einzeln angetriebenen Ösenvorspannern und Crepevorspannern,

Fig. 8

eine Prinzipdarstellung eines Spulengatters mit fadenweiser Spannungsmessung, einzeln angetriebenen Tellerbremsen und schienenweise angetriebenen Ösenvorspannern und Crepevorspannern,

Fig. 9

eine Prinzipdarstellung eines Spulengatters mit fadenweiser Spannungsmessung, einzeln angetriebenen Umschlingungsfadenbremsen und einzeln angetriebenen Ösenvorspannern.

Fig. 10

eine Prinzipdarstellung eines Spulengatters mit fadenweiser Spannungsmessung, einzeln angetriebenen Umschlingungsfadenbremsen und schienenweise angetriebenen Ösenvorspannern,

Fig. 11

eine perspektivische Darstellung von Gruppen von Fadenspannungssensoren auf verschiedenen Ebenen.

Further advantages and individual features of the invention result from the following description of exemplary embodiments and from the drawings. Show it:

Fig. 1

3 shows a highly schematic side view of a creel with the features of the invention,

Fig. 2

2 shows a plan view of the creel according to FIG. 1,

Fig. 3

a plan view of a single winding unit with pretensioning devices and with a disk brake,

Fig. 4

1 shows a perspective view of a support profile with disc brakes arranged therein, in overall view and in detail,

Fig. 5

1 shows a schematic side view of a winding unit with an eyelet pretensioner, a crepe pretensioner and with a disk brake,

Fig. 6

2 shows a schematic side view of a winding unit with an eyelet pretensioner and with a wrap thread brake,

Fig. 7

a schematic representation of a creel with thread-wise tension measurement, individually driven plate brakes and individually driven eyelet pretensioners and crepe pretensioners,

Fig. 8

a schematic representation of a creel with thread-wise tension measurement, individually driven disc brakes and rail-wise eyelet pretensioners and crepe pretensioners,

Fig. 9

a schematic diagram of a creel with thread tension measurement, individually driven wrap brakes and individually driven eyelet pretensioners.

Fig. 10

a schematic representation of a creel with thread-wise tension measurement, individually driven wrap thread brakes and eyelet pretensioners driven in rails,

Fig. 11

a perspective view of groups of thread tension sensors at different levels.

According to FIGS. 1 and 2, there is a winding system 1, for example a warping system, from a creel 2 and one Winding machine (cone warping, slip, tree, etc.) 3. The individual bobbins 4 are at bobbins 7 of the creel put on and the threads 5 pulled together at least pass one thread brake 6 each to maintain a predetermined one Thread tension.

The example shows a parallel gate with a left gate side LS and with a right gate side RS. Form the coils vertical and horizontal rows, obviously one vertical row on each side of the gate, one group of threads forms the thread length of the winding from the winding unit to the winding machine is the same size. The same principle can also with any other gate type, e.g. in a V-gate become.

On the creel, regardless of the length of the thread, different Set coils of different types, for example different yarn qualities or different Thread colors are attached. Regardless of the so-called gate length compensation, can be threads of different genres each be subjected to an individual braking force.

Fig. 2 shows the two thread groups with the longest run length L1 and the two thread groups with the shortest barrel length L2.

In the area of the gate side 8, which the winding machine 3 on is preferably the thread tension sensors 9 arranged for each individual thread. The arrangement of the thread tension sensors at this point, however, is not mandatory. Basically, it would be advantageous to thread tension sensors like this as close as possible to the winding point of the winding machine.

The thread tension sensors can therefore also be in one area the winding point of the winding machine i.e. between read 10 and warping blade 11 can be arranged to bring the threads together. With appropriate miniaturization of the thread tension sensors can be arranged so close together, that despite the fact that the threads have already been brought together individual thread can be applied. That would even the previous band tension regulation is superfluous because all changes the braking force until just before the winding formation can be measured.

This could also be the thread path between the creel and the winding machine are included in the control loop. This is alternatively also possible in that the known per se Belt tension regulation with a common tension measurement of the entire thread assembly just before winding up is, so that the individual control process according to the invention is still overlaid by a global control process. A such tension control is for example by CH-A-675 598, the disclosure of which is hereby fully Scope is taken over.

After leaving the creel, the threads get into the Area of the winding machine 3, where it first has a reading sheet 10 happen in which the threads get their correct order. The threads are then fed to the warping blade 11, in which they are brought together to form a thread 12 via a deflection and / or measuring roller 13 onto the roll 15 or to be wound onto the winding tree 14.

Depending on the intended use of the creel, you can use one winding unit 7 different braking means can be arranged.

3 shows, for example, how one unwound from a coil 4 Thread 5 two pretensioners on a loop basis and runs through a thread brake. An eyelet pretensioner 16 and a crepe pretensioner (named after the one with a strong twist Crepe yarns) 17 have the task of to wind the thread-formed claw and as a chicane to act against swirl backflow and thus to avoid the formation of claws. At the same time, they limit the thread balloon, which forms when unwinding from the coil 4.

The wrapping of the pretensioners 16 and 17 can can be adjusted by rail or individually, e.g. by a Rotating or swiveling movement. The main braking force is a Disc brake 18 with two arranged one behind the other in the thread running direction Brake actuator units applied. The disc brake is housed in a U-shaped, vertical support profile 19, in its U-leg thread guide eyelets for the passage of the thread 5 are arranged.

It can also be advantageous if the crepe pretensioner is individual per thread are adjustable to prevent claw formation at different Avoid types of yarn and thus good drainage behavior to reach the thread.

Fig. 4 shows further details of such a disc brake. About each disc brake 18 is directly in the support profile 19 individual drive motor 20 attached. This operates via an adjustment support 22 a pressure element 23, which the brake actuator burdened or relieved.

Figures 5 and 6 show a schematic representation of winding units with various pretensioners and braking devices. According to FIG. 5, the thread 5 initially runs according to FIG. 3 an eyelet pretensioner 16 and then a crepe pretensioner 17 before it is guided through the disk brake 18.

6 shows an alternative embodiment of a winding unit with a wrap brake 39. As a pretensioner only one eyelet pretensioner 16 is used. With the wrap thread brake can the twist angle and thus the Degree of wrap can be set. This will make the Friction and thus the thread tension set or regulated. The pretensioners according to FIGS. 5 and 6 can be used both by rail and individually by thread be adjusted.

7 shows one, related on the winding machine 3, distant coil row 24 and one close Spool row 25 with three levels each, i.e. with three spool positions each. In reality, each vertical row (rail) can have up to 12 Have floors. The thread tension is for all vertical Rows (rails) measured on a common measuring plane 38.

As shown, each thread has its own thread tension sensor 9.

These thread tension sensors can be used to regulate the thread tension, for monitoring the specified thread tension range and used as thread break monitoring.

The thread runs through between the bobbin and the disc brake Eyelet pretensioner 16 and then a crepe pretensioner 17. These pretensioners are each one individual drive motor 20 driven. After the pretensioner device the threads reach a disc brake 18, which also individually provided with a drive motor 20 is. On the disc brakes of a rail, one can also common drive motor 40 can be activated so that the lower Brake plate to rotate in a manner known per se to make cuts to avoid the threads in the brake actuators. It is also very advantageous if the drive motor 40 for the plate drive is so controllable that it is on vertical rows (Rails) of winding units without threads based on the existence control automatically by the thread tension sensors or the thread monitors can be deactivated. Through the thread tension sensors or the thread monitors always know which winding positions are not equipped. As indicated in Figure 7, could the lower brake plates of the individual thread brakes but also everyone can be rotated with an individual drive motor 40 '. In in such a case, each motor 40 'whose Thread brake does not lead a thread.

In addition, each winding unit is still an optical signal element 26 and an acknowledgment switch assigned, which as a coil attachment aid serve, and what the assembly of the creel facilitate. The signal element serves the different Coil character or coil types according to the prescribed To attach the repeat without errors. It can also the individual thread tension TARGET values automatically be assigned to the corresponding thread types.

Each vertical row (rail) is with an electronic node 29, 29 'provided, which via a serial line system Can process 28 different signals. Each gate side has its own main processor 30, 30 ', the Activities coordinated via a transmission processor 31 become. This also allows one gate side to be controlled individually. The thread tension TARGET values can be per thread, per thread group or can be entered in rails on a display. The entered TARGET values are provided by the transmission processor the main processors 30 and 30 'forwarded and there with the ACTUAL values compared. The actual values for the thread tension will be from the thread tension sensors on a common measuring level 38 measured and to the measurement collection units 32 and from there forwarded to the main processors 30 and 30 ', respectively. These main processors thus take on the function of a comparison device for comparing the actual values with the entered TARGET values.

8 differs from 7 in that the eyelet pretensioner 16 and the crepe pretensioner 17 in rails with a common one Drive motor 21 are adjustable. The disc brakes 18 have however, also via individual drive motors 20.

9 is again each individual Provide thread with its own thread tension sensor 9. Instead of disc brakes, as in the previous exemplary embodiments, however, thread brakes 39 come to Use individually with an individual drive motor 20 are adjustable. Only serve as pretensioner Eyelet pretensioner 16, which also has individual drive motors 20 are adjustable.

10 differs according to 9 only in that all eyelet pretensioners 16 a vertical row (rail) with a common drive motor 21 are adjustable.

Obviously, according to the invention, further combinations would also be possible conceivable, e.g. through the use of alternative thread brakes or pretensioners or by omitting or adding further measuring, control or signaling devices at the individual winding units.

In Fig. 11 it is shown how one for each floor on the gate Entire thread tension sensor battery 34, consisting of the thread tension sensors 9, is arranged. The attachment takes place on a common support 33. Each sensor has a movable sensor 37, which is between two thread guides 36 is arranged that the thread 5 is deflected. The the actual measuring bridge is arranged in a closed housing 35, the individual housings directly next to each other can be attached.

Combining the thread tension sensors in units of 8 has the advantage that these units are mechanically inexpensive, Space-saving and electrically compatible with an 8-bit unit are.

Claims (17)

Method for operating a creel (2) for a winding system (1), in particular a warping system, with several winding stations (7), in which several threads (5) of the same or different genre are drawn off from the winding stations with a winding machine (3) , wherein at each winding point the thread is acted upon by at least one thread brake (6) with a braking force, characterized in that that the actual value of the thread tension in the area between leaving the gate and winding on the winding machine is measured continuously on each individual thread, that the measured actual value of each thread is compared with a corresponding target value and that when the actual value deviates from the target value, the thread brake of the thread in question is adjusted in such a way that the actual value approximates the target value, each thread brake being activated by a drive motor (20) assigned to it. A method according to claim 1, characterized in that the threads in the thread running direction before each thread brake are acted upon by at least one pretensioner device (16, 17) with an additional braking force which is set as a function of the measured actual value or which is set as the basic value . A method according to claim 1 or 2, characterized in that on the winding machine the tensile force of the totality of the threads combined to form a thread band is measured in an area in front of the winding point as the actual strip tension value and is compared with a desired strip tension value, and that upon detection of a deviation, all thread brakes are adjusted simultaneously in such a way that the actual strip tension value approaches the target strip tension value. Bobbin creel (2) for a winding system (1), in particular a warping system, with a plurality of winding units (7), from which several threads of the same or different type can be drawn off simultaneously with a winding machine (3), and with at least one thread brake (6) assigned to each winding unit ), on which the thread can be subjected to a braking force, characterized in that that in the area between the winding points closest to the winding machine on a gate side (8) and the winding tree (14) of the winding machine (3) there is at least one thread tension sensor (9) for each thread, on which the actual value of the thread tension of a thread is continuously measurable, that the actual value of each thread in a comparison device (30, 30 ') can be compared with a corresponding target value, and that when a deviation of the ACTUAL value from the TARGET value is ascertained, a drive motor can be activated with which the thread brake of the thread concerned can be adjusted in such a way that the ACTUAL value approximates the TARGET value, each thread brake with a drive motor assigned to it (20) can be activated. Bobbin creel according to claim 4, characterized in that the thread tension sensors have a force measuring device with a measuring element which is responsive to elongation, the force occurring transversely to the thread being measurable on the deflected thread. Bobbin creel according to claim 4 or 5, characterized in that a plurality of thread tension sensors are arranged on a row per gate level, each sensor being surrounded by a separate housing. Bobbin creel according to one of claims 4 to 6, characterized in that each winding unit is assigned at least one pretensioner device (16, 17) arranged in the thread running direction in front of the thread brake for applying an additional braking force which can be driven independently of the thread brake, or which is fixed as a basic setting is adjustable. Bobbin creel according to claim 7, characterized in that the pretensioner device is an eyelet pretensioner (16) with a rotatable eyelet and deflecting the thread and / or a crepe pretensioner (17) with adjustable wrap elements. Bobbin creel according to one of claims 4 to 8, characterized in that the thread brakes are wrap thread brakes with an adjustable wrap angle or disc brakes (18) with the thread acting and differently resilient brake actuators. Bobbin creel according to claim 7 or 8, characterized in that the similar pretensioner devices (16, 17) of a vertical row of winding units are adjustable with a common drive motor (21). Coil creel according to claim 7 or 8, characterized in that each similar pretensioner device (16, 17) is adjustable with a drive motor assigned to it. Bobbin creel according to one of claims 4 to 11, characterized in that the drive motors for the thread brakes are stepper motors and that they act on the thread brakes via a self-locking gear. Bobbin creel according to one of Claims 4 to 12, characterized in that at least one thread monitor (27) for thread break monitoring or thread movement control of the thread is assigned to each winding position. Bobbin creel according to one of claims 4 to 13, characterized in that each winding unit is assigned at least one optical signaling means (26) for identifying the winding unit and / or as a coil attachment aid. Bobbin creel according to one of claims 4 to 14, characterized in that all electrically activatable means assigned to a winding unit, in particular the drive motors for the thread brakes, are operatively connected to a central control device via serial interfaces. Bobbin creel according to one of claims 4 to 15, characterized in that the thread tension sensors (9) are arranged in an area in front of the winding point of the winding machine (3) and between a read and a warping blade (11) for bringing the threads together. Bobbin creel according to claim 9, characterized in that the brake actuators for the thread brakes of a vertical row can be rotated with a common drive motor or that the brake actuators for each thread brake can be rotated with an associated drive motor, all drive motors in this way via the thread tension sensors or the thread monitors can be controlled that a drive motor of a vertical row without threads or the drive motors of the thread brakes without threads can be automatically deactivated.

Images