EP0999992B1 - Process and cross-winding device for laying a thread - Google Patents

Process and cross-winding device for laying a thread Download PDF

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Publication number
EP0999992B1
EP0999992B1 EP98943765A EP98943765A EP0999992B1 EP 0999992 B1 EP0999992 B1 EP 0999992B1 EP 98943765 A EP98943765 A EP 98943765A EP 98943765 A EP98943765 A EP 98943765A EP 0999992 B1 EP0999992 B1 EP 0999992B1
Authority
EP
European Patent Office
Prior art keywords
traversing
guide
yam
stepping motor
measuring device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98943765A
Other languages
German (de)
French (fr)
Other versions
EP0999992A1 (en
Inventor
Reinhard Lieber
Friedhelm Lenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0999992A1 publication Critical patent/EP0999992A1/en
Application granted granted Critical
Publication of EP0999992B1 publication Critical patent/EP0999992B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B65H54/2824—Traversing devices driven by belts or chains with at least two traversing guides travelling in opposite directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2881—Traversing devices with a plurality of guides for winding on a plurality of bobbins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method for laying a thread according to the Preamble of claim 1 and a traversing device for implementation of the method according to the preamble of claim 11.
  • a traversing thread guide on a belt of a belt drive attached.
  • the belt drive is driven by a stepper motor in such a way that the traversing thread guide passes the thread within a traversing stroke hergart.
  • the stepper motor will reverse with saturation current and in the rest of the range with nominal current.
  • the control the movements take place in a position within the traversing stroke by means of a sensor.
  • the known method is subject to physical and technical Limitations.
  • the stepper motor is physically a spring-mass system represents which with rapid changes in position to vibrations tends and makes uncontrollable movements.
  • the reference or zero position only twice during a movement of the thread guide run over. The positioning accuracy outside the zero position is not Are defined. At higher speeds, for example 1,000 m / min production speed can therefore no longer use this method with the necessary accuracy work.
  • WO 92/08664 also describes a method for constructing a coil known, in which the traversing frequency of a traversing device constantly is checked and adjusted. In the area of the reversal points of the Traversing device should achieve maximum acceleration in remaining area, the most accurate adherence to the traversing frequency. A position-controlled driving style over the entire traversing stroke takes place under these Conditions not.
  • the invention has for its object a method and to provide a device for laying a thread, in which the Thread can be positioned exactly within the traversing stroke. Another one The aim of the invention is to make optimal use of each traversing stroke to ensure the stepper motor.
  • a known traversing device as described in EP 0 302 461, several are connected one after the other traversing thread guides attached to a belt by means of a servo motor driven.
  • the commutation of the servo motor by means of a Resolvers carried out to the servo motor according to a given To change target function.
  • a position detection of the traversing thread guide does not happen.
  • the well-known traversing device which at production speeds from 150 to 170 m / min is used due to the high Mass inertia for laying a thread at higher traversing speeds up to 7 m / sec unsuitable.
  • Such a highly dynamic movement of the traversing thread guide can be however, can be implemented without difficulty using the method according to the invention.
  • the particular advantage of the invention is that a permanent Comparison between the actual position and the target position of the traversing thread guide takes place.
  • the measuring device coupled to the traversing device offers the possibility of full dynamics and the full moment of To use electric motor, namely a stepper motor, without running the risk of the motor out of step falls. This brings especially those in the outer areas of the movement of the Traversing thread guide, so in the area of reversal on the outer edge the coil, high accuracy and reproducibility when laying the Thread.
  • the particular advantage of the invention is that the electric motor is controlled by amplitude. That means that if there is a deviation between the actual and the target position by the difference signal of the electric motor receives a current whose amplitude is changed. In particular is the positioning of the traversing thread guide in the reversal area feasible with great accuracy.
  • the difference signal is also used to change the speed of rotation of the electric motor.
  • the speed of the traversing thread guide can thus be controlled by the frequency-controlled Motor in any position within the traverse stroke a predetermined course can be regulated so that the winding laws with high accuracy in the formation of coils can be implemented. It wild windings, for example. Precision windings or conical coils with corresponding speed profiles with high Execute accuracy.
  • the traversing speed is in the range of approx. 800 double strokes per minute.
  • the inventive method offers the possibility of the actual position of the Traversing thread guide by a sensor coupled to the measuring device to be recorded optically, acoustically or electrically.
  • optical detection For example, lasers are used which measure the distance Detect the position of the thread guide.
  • the sensor of the measuring device with which drives a drive pulley of the belt drive Motor shaft of the electric motor connected.
  • the angle of rotation or the number of revolutions of the motor shaft can be used what is due to the transmission mechanism of each The actual position of the thread guide corresponds.
  • the method according to the invention in which the Traversing thread guide driven by a stepper motor is special an advantage due to the high flexibility. Likewise, the low inertia of the stepper motors the application of a high Moment, especially in the reversing areas of the traversing thread guide is required.
  • the inventive method can be both with a traversing device carry out at which the traversing thread guide within a traversing stroke is moved back and forth, as well as by a traversing device, in which two oppositely driven traversing thread guides within one Changierhubes are moved.
  • the traversing devices according to the invention is particularly notable for the reproducibility of the thread deposit the coil and its high flexibility with regard to the coil structure.
  • a particularly advantageous development of the traversing device provides that several traversing thread guides for laying several threads in parallel mutually arranged winding stations are provided.
  • the the traversing thread guide moved in the same direction is driven by an electric motor.
  • the traversing thread guide is for position and speed control however, only one of the traversing thread guides moving in the same direction has the measuring device assigned. With this configuration, any Number of winding points of a machine arranged in parallel regulated become.
  • a sensor of the measuring device in contact with the traversing thread guide stands.
  • the traversing device particularly advantageous, in which the measuring device for recording the actual position of the traversing thread guide with the traversing thread guide driving drive means is coupled.
  • the traversing device in which the traversing thread guide is guided by means of a belt drive, a variant in which the moving masses are small, so that the electric motor for the high Speeds required torque can apply.
  • the belt is here over a pulley and a drive pulley guided.
  • the electric motor is coupled to the drive pulley, so that the Rotational motion is transmitted to the belt.
  • the strap can too be carried out by a rope or another band-shaped means.
  • the development of the traversing device in which the sensor of Measuring device introduced a number of per unit length on the belt Marks detected, has the advantage that the immediate Transmission member of the movement of the traversing thread guide is sensed.
  • Markings can be the teeth of a toothed belt, for example be used.
  • the design of the traversing device in which the sensor of the measuring device is arranged directly on the electric motor such that the Angular position or the number of revolutions of the drive pulley connected motor shaft is detected, leads to a particularly compact Construction.
  • the drive of the traversing thread guide by means of is particularly advantageous a stepper motor. Due to the high pole pairs of 50, for example Tru, it can be the target position of the traversing thread guide within the Set the traverse stroke very precisely.
  • the measuring device and associated control succeeds, which is common with the stepper motor eliminate vibrations that occur during rapid reversing processes.
  • the stepper motor can be used much better than in most of the time only controlled companies are possible.
  • FIGS. 1 to 3 each have a traversing device according to the invention shown, which differ only in the design of the measuring devices. Therefore, the traversing device from FIGS. 1 to 3 described below together.
  • a traversing thread guide 3 is, for example, by means of an electric motor 7 a stepper motor back and forth within a traversing stroke.
  • the transmission of the movement of the electric motor 7 to the traversing thread guide 3 takes place via a belt 6.
  • the belt 6 wraps around the pulleys 4.1 and 4.2 and the drive pulley 5.
  • the traversing thread guide 3 is firmly connected to the endless belt 6 and is on the belt 6 back and forth between the pulleys 4.1 and 4.2.
  • the Pulleys 4.1 and 4.2 are each freely rotatable on one axis stored.
  • the drive pulley 5 is attached to a motor shaft 9.
  • the Motor shaft 9 is with the electric motor 7 with an alternating direction of rotation driven.
  • a winding spindle 14 Arranged parallel to the belt 6 stretched between the pulleys 4.1 and 4.2 is a winding spindle 14 on which a sleeve 15 is fastened.
  • a coil 1 is wound on the sleeve 15.
  • a drive roller 2 rests on the surface of the coil 1.
  • the winding spindle 14 is driven by the drive roller in circumferential contact with the coil 1.
  • a thread 13 which is wound on the bobbin 1 is moved by the traversing thread guide 3 in accordance with a preselected winding set within the traversing stroke.
  • the position of the traversing thread guide can assume any values within the traversing stroke.
  • the positions of the traversing thread guide within the traversing stroke are determined by the electric motor 7.
  • the diameter of the drive pulley is determined from the torque of the electric motor 7 and the traversing stroke of the traversing thread guide 3.
  • the circumference of the traction sheave 5 can be smaller or larger than the traversing stroke of the thread guide.
  • the drive pulley 5 is made of a light material, for example plastic, in order to achieve a low mass inertia.
  • the electric motor 7 can be controlled via a control device 11.
  • the Control device 11 the courses of a higher-level control the target position within the traversing stroke. in this connection can for each winding law the characteristic of the traversing thread guide Target values are specified in their position and speed. In addition, there are guidelines for mirror disturbance during winding as well as to shorten the traverse stroke. For this, the Control device 11, the speed signals of the coil 1 and the drive roller 2 abandoned.
  • the control device 11 is connected to a measuring device 8.
  • the Measuring device 8 has a sensor 10 which detects the actual position of the Traversing thread guide 3 detects.
  • the position of the traversing thread guide 3 is by the sensor 10 within the traversing stroke and also outside of the traversing stroke, for example when changing the thread.
  • the measuring device 8 transmits the measurement signals to the control device 11.
  • the measuring device 8 is connected to an electrical sensor 10, which has contact with the traversing thread guide 3.
  • the sensor 10 consists of a potentiometer, on which the Traversing thread guide is guided back and forth and thus an electrical Signal generates what is recorded by the path measuring device 8 and is supplied to the control device 11. To the position of the traversing thread guide Detect contactless, the sensor 10 with the traversing thread guide 3 be magnetically coupled.
  • FIG. 2 shows a measuring device which has an optical sensor 10 having.
  • the optical sensor 10 generates a laser beam which is directed onto the Traversing thread guide is directed.
  • the measurement signal is in turn from the Measuring device 8 led to the control device 11.
  • the through the distance measured by the optical sensor within the path measuring device 8 are transferred to a position of the traversing thread guide.
  • a further embodiment variant is shown in dashed lines in FIG. 2.
  • the measuring device with the optical sensor 10 is arranged such that the belt 6 is scanned by the optical sensor 10.
  • the sensor would also be arranged inside the belt drive possible for the teeth in a toothed belt to use as a signal.
  • the Measuring device is directly connected to the electric motor 7.
  • the sensor 10 the measuring device 8 is designed as a rotary encoder and detects the Angular position or the revolution of the motor shaft 9.
  • All measuring devices shown in Figures 1 to 3 detect the actual position of the traversing thread guide during the winding trip.
  • the actual position the control device 11 is abandoned.
  • the control device 11 leads a comparison between the specified target values and the actual values the traversing thread guide position.
  • One from the control device 11 generated difference signal is used to control the electric motor 7 Electric motor 7 abandoned.
  • the coils of the electric motor 7 are through the difference signal switched such that a change in position and speed entry.
  • the control device 11 includes a microprocessor control and a power unit for the electric motor, whichever one Motor current detected and the torque of the electric motor 7 changed can be. It is thus both location and speed of rotation Motor shaft regulated.
  • the traversing device does not need any special one Alignment of the motor shaft of the motor 7 with the traversing thread guide 3.
  • the control device 11 can be used to determine the position of the traversing thread guide do a reference run before starting the winding process perform that the electric motor 7 with very low torque in a Direction up to a pulley 4.1 or 4.2 is driven. By the low torque does not cause mechanical damage.
  • the control device 11 can remove the belt during the winding process Monitor for breakage by monitoring the motor current for change becomes. Monitoring for breakage of the belt 6 can be done by the local Control unit also carried out during the reference run by time monitoring become.
  • the transmission of the rotary movement of the electric motor 7 can basically also by other belt-like means, such as ropes, Carry out straps, chains or wires.
  • FIG. 4 shows a diagram with the course of the desired position of the traversing thread guide.
  • the path covered by the thread guide is entered on the ordinate.
  • the traversing stroke H is formed by the sections B L , L and B R.
  • B L and B R The reversal of the distances at the ends of the traversing stroke are denoted by B L and B R.
  • the speed of the traversing thread guide is entered on the abscissa. If you now start at the zero point of the diagram, the thread guide is first accelerated.
  • This acceleration takes place according to a function which is arbitrary in its shape, for example circular, parabolic, hyperbolic, etc.
  • the acceleration phase of the traversing thread guide is completed after a predetermined guide speed has been reached. This point is characterized by the transition from the reverse section B to the linear section L. The speed of the thread guide is constant within the linear path L.
  • the thread guide is now decelerated within the reversing distance B R. The thread guide is decelerated according to a function. After the traversing thread guide has zero speed, the entire process is repeated.
  • Fig. 4 are three turns with different guide speeds shown.
  • To identify the guide speed were the double stroke numbers of the traversing thread guide per minute are given. These are the values that are set in practice 300, 600, 800 double strokes / min.
  • Through these courses is the target position of the traversing thread guide in its position and speed and serves to control the electric motor.
  • the respective determined actual position is positioned in the control device and speed compared with the target position.
  • One from the control device generated difference signal then leads to a corresponding Regulation of the electric motor.
  • FIG. 5 is another embodiment of an inventive Traversing device shown. Identical functional components are included provided with the same reference numerals.
  • the traversing device consists of two belt drives with crossed ones Belts 6.1 and 6.2.
  • a belt drive is through the drive pulley 5.1 and the pulleys 4.1 and 4.2 formed, the endless belt 6.1 to lead.
  • the drive pulley 5.1 is at one end of a motor shaft 9.1 attached and is counter-clockwise by the electric motor 7.1 driven (arrow direction).
  • a traversing thread guide is on the belt 6.1 3.1 attached.
  • the second belt drive consists of the drive pulley 5.2 and the belt pulleys 4.3 and 4.4 and the endless belt 6.2 contained therein.
  • the drive pulley 5.2 is attached to a motor shaft 9.2 and is driven clockwise by the electric motor 7.2 (direction of arrow).
  • a thread guide 3.2 is attached to the belt 6.2.
  • the belt drives are arranged in parallel planes to each other, so that the pulleys 4.1 and 4.3 as well as the pulleys 4.2 and 4.4 coaxial to each other lie. Parallel to the pulleys is one below the belt drives coil 1 arranged to be wound.
  • the coil 1 is here on a sleeve 15 wound, which is driven via a winding spindle 14.
  • the winding spindle 14 can be driven by an electric motor, for example. Between a pressure roller is arranged on the belt drive and the spool 1, which is not shown in FIG. 5 due to the clarity.
  • the pressure roller lies with a contact force on the surface of the spool.
  • the pressure roller driven by the bobbin 1 becomes during the winding cycle operated at constant speed. For this the drive of the winding spindle 14 slowed down according to the diameter increase.
  • the thread 13 in Fig. 5 in the plane of the drawing essentially enters vertically, is now using the traverse guide 3.1 and 3.2 along the traverse path, which is essentially equal to the coil length, guided.
  • the thread 13 is currently from the traversing thread guide 3.2 to the left end of the bobbin by means of the Belt 6.2 led.
  • the pulley 4.4 has compared to the coaxial arranged pulley 4.2 of the second belt drive a smaller Diameter.
  • the traversing thread guide 3.2 partially dips below of the traversing thread guide 3.1 and thus outputs the thread his leadership notch free.
  • the thread at the end of the traverse path was taken over by the thread guide 3.1, the thread is in the opposite Directed to the right end of the coil 14. Because the pulley 4.1 of the belt 6.1 a smaller diameter compared to the Has pulley 4.3 of the belt 6.2, there is a crossed Course of the belts 6.1 and 6.2. The thread transfer is thus on the right End of the bobbin in the same way as the thread transfer at the left end the coil is repeated.
  • the actual position of the traversing thread guide 3.2 over a measuring device 8.2 arranged on the electric motor 7.2.
  • the measuring device 8.2 is identical to that shown in FIG. 3 Measuring device. In this respect, reference is made to the description Fig.
  • the measuring device 8.2 is connected to the control device 11.2.
  • the control device 11.2 controls the electric motor 7.2.
  • the electric motor 7.2 is controlled so that the thread guide 3.2 during the Guide the thread is moved at a guide speed. After this the thread at the end of the traverse path on the thread guide 3.1 was passed, the thread guide 3.2 with an alternating speed moved by the electric motor 7.2, which is higher than the guide speed.
  • recording the actual position of the traversing thread guide can therefore be based on the control speed of the motor shaft and the number the revolutions each position of the thread guide are detected.
  • a measuring device 8.1 is also arranged on the electric motor 7.1.
  • the measuring device 8.1 is associated with an electric motor 7.1
  • Control device 11.1 connected.
  • the control of the electric motor 7.1 This is done analogously to the control of the electric motor 7.2.
  • the control devices 11.1 and 11.2 work together via a central controller coupled. By coupling, the guide speed can now and the change speed of the two belt drives controlled in this way be that the thread transfer takes place at the specified point at the end of the stroke.
  • the regulation made possible by the measuring devices guarantees this the traversing drives an exact adherence to the transfer point at the Thread transfer in the hub ends.
  • FIG. 5 A further possible arrangement is shown in broken lines in FIG. 5.
  • the electric motors 7.1 and 7.2 directly from a central Control device 11 controlled, which with an the actual position of the traversing thread guide 3.1 detecting control-measuring device 8.1 connected and with the path measuring device which detects the actual position of the traversing thread guide 3.2 8.1 is connected.
  • the traversing thread guides only detected in their position within the traversing path. Outside the traverse path, while the traverse guide with the Position change is not operated intended.
  • the electric motors 7.1 and 7.2 are only during the Phase in which the motor shaft is driven at the leading speed are regulated.
  • the traversing device according to the invention is not only for one winding point limited.
  • the traversing device can be juxtaposed to any number Extend arranged winding stations.
  • a traversing device 6 With a traversing device 6 are two traversing thread guides 3.1 arranged one behind the other and 3.2 driven by means of a belt drive with an electric motor 7.
  • the extension could be such take place that also several thread guides in a row on a belt drive are attached.
  • the belt drives could be mirror images be aligned with each other so that the traversing thread guides guided on the belt face each other.
  • the invention is not limited to traversing devices that move a traversing thread guide using a belt drive. in principle can any traversing drive, in which a thread guide by means of a Drive is moved and positioned, according to the inventive method be managed.
  • the constant comparison between the actual position and the set position of the traversing thread guide leads to very high accuracy with the thread deposit. This allows the coil assemblies to be used on everyone reproduce the winding to be wound.

Abstract

A process and cross-winding device (3) are disclosed for laying a thread (13). The traversing thread guide is moved by an electric motor (7) and the set position of the traversing thread guide is determined by the relative position of the stator and rotor of the electric motor. According to the invention, the real position of the traversing thread guide is continuously detected by measurement means (8, 10) and transmitted to controlling means (11) which compare the real and set positions of the traversing thread guide and generate a corresponding differential signal for controlling the relative position of the stator and rotor of the electric motor.

Description

Die Erfindung betrifft ein Verfahren zum Verlegen eines Fadens gemäß dem Oberbegriff des Anspruchs 1 sowie eine Changiereinrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff von Anspruch 11.The invention relates to a method for laying a thread according to the Preamble of claim 1 and a traversing device for implementation of the method according to the preamble of claim 11.

Ein derartiges Verfahren und eine Vorrichtung zum Verlegen eines Fadens ist aus der EP 0 453 622 A1 bekannt.Such a method and an apparatus for laying a thread is known from EP 0 453 622 A1.

Hierbei ist ein Changierfadenführer an einem Riemen eines Riementriebes befestigt. Der Riementrieb wird über einen Schrittmotor derart angetrieben, daß der Changierfadenführer innerhalb eines Changierhubes den Faden hinund herführt. Der Schrittmotor wird im Bereich der Umkehr mit Sättigungsstrom und im übrigen Bereich mit Nennstrom beaufschlagt. Die Kontrolle der Bewegungsvorgänge geschieht in einer Position innerhalb des Changierhubes mittels eines Sensors.Here is a traversing thread guide on a belt of a belt drive attached. The belt drive is driven by a stepper motor in such a way that the traversing thread guide passes the thread within a traversing stroke herführt. The stepper motor will reverse with saturation current and in the rest of the range with nominal current. The control the movements take place in a position within the traversing stroke by means of a sensor.

Das bekannte Verfahren unterliegt jedoch physikalischen und technischen Einschränkungen. Der Schrittmotor stellt physikalisch gesehen ein Feder-Masse-System dar, welches bei schnellen Lageänderungen zu Schwingunen neigt und unkontrolllierbare Bewegungen ausführt. Die Referenz oder Nullposition wird während einer Bewegung des Fadenführers nur zweimal überfahren. Die Positioniergenauigkeit außerhalb der Nullposition ist nicht definiert. Bei höheren Drehzahlen von beispielsweise 1.000 m/min Produktionsgeschwindigkeit kann dieses Verfahren darum nicht mehr mit der nötigen Genauigkeit arbeiten. However, the known method is subject to physical and technical Limitations. The stepper motor is physically a spring-mass system represents which with rapid changes in position to vibrations tends and makes uncontrollable movements. The reference or zero position only twice during a movement of the thread guide run over. The positioning accuracy outside the zero position is not Are defined. At higher speeds, for example 1,000 m / min production speed can therefore no longer use this method with the necessary accuracy work.

In der nicht vorveröffentlichten EP 0 829 443 A1 ist eine Vorrichtung zum Aufwickeln eines Fadens auf einer Spule beschrieben, bei der die Position eines Fadenführers einer Changiereinrichtung durch einen Sensor kontinuierlich während des gesamten Changierhubes überprüft wird, um bei Fehlern eine entsprechende Korrektur vornehmen zu können. Eine lagegeregelte Fahrweise über den gesamten Changierhub ist jedoch nicht vorgesehen.In the unpublished EP 0 829 443 A1 a device for Winding a thread described on a bobbin, in which the position of a Thread guide of a traversing device by a sensor continuously is checked during the entire traversing stroke to ensure a to be able to make appropriate corrections. A position-controlled driving style However, no provision is made for the entire traversing stroke.

Aus der WO 92/08664 ist weiterhin ein Verfahren zum Aufbau einer Spule bekannt, bei dem die Changierfrequenz einer Changiervorrichtung ständig kontrolliert und nachgeregelt wird. Im Bereich der Umkehrpunkte der Changiervorrichtung soll eine maximale Beschleunigung erreicht werden, im übrigen Bereich eine möglichst genaue Einhaltung der Changierfrequenz. Eine lagegeregelte Fahrweise über den gesamten Changierhub erfolgt unter diesen Bedingungen nicht.WO 92/08664 also describes a method for constructing a coil known, in which the traversing frequency of a traversing device constantly is checked and adjusted. In the area of the reversal points of the Traversing device should achieve maximum acceleration in remaining area, the most accurate adherence to the traversing frequency. A position-controlled driving style over the entire traversing stroke takes place under these Conditions not.

Demgemäß liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum Verlegen eines Fadens zu schaffen, bei welchem der Faden innerhalb des Changierhubes genau positionierbar ist. Ein weiteres Ziel der Erfindung liegt darin, eine zu jedem Changierhub optimale Ausnutzung des Schrittmotors zu gewährleisten.Accordingly, the invention has for its object a method and to provide a device for laying a thread, in which the Thread can be positioned exactly within the traversing stroke. Another one The aim of the invention is to make optimal use of each traversing stroke to ensure the stepper motor.

Die Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruches 1 sowie durch eine Changiervorrichtung mit den Merkmalen des Anspruchs 11 gelöst. Vorteilhaffe Ausgestaltungen sind in den jeweils abhängigen Ansprüchen angegeben.The object is achieved by a method with the features of the claim 1 and by a traversing device with the features of claim 11 solved. Advantageous configurations are in the respective dependent claims.

Bei einer bekannten Changiereinrichtung wie sie in der EP 0 302 461 beschrieben ist, werden mehrere hintereinander an einem Riemen befestigte Changierfadenführer mittels eines Servo-Motors angetrieben. Hierbei wird die Kommutierung des Servo-Motors mittels eines Resolvers durchgeführt, um den Servo-Motor entsprechend einer vorgegebenen Soll-Funktion umzusteuem. Eine Lageerfassung des Changierfadenführers erfolgt nicht. Die bekannte Changiereinrichtung, die bei Produktionsgeschwindigkeiten von 150 bis 170 m/min eingesetzt wird, ist aufgrund der hohen Masseträgheit zur Verlegung eines Fadens bei höheren Changiergeschwindigkeiten bis zu 7 m/sec ungeeignet.In a known traversing device as described in EP 0 302 461, several are connected one after the other traversing thread guides attached to a belt by means of a servo motor driven. Here, the commutation of the servo motor by means of a Resolvers carried out to the servo motor according to a given To change target function. A position detection of the traversing thread guide does not happen. The well-known traversing device, which at production speeds from 150 to 170 m / min is used due to the high Mass inertia for laying a thread at higher traversing speeds up to 7 m / sec unsuitable.

Eine derart hoch-dynamische Bewegung des Changierfadenführers läßt sich jedoch nach dem erfindungsgemäßen Verfahren ohne Schwierigkeiten realisieren. Der besondere Vorteil der Erfindung liegt darin, daß ein ständiger Abgleich zwischen der Ist-Position und der Soll-Position des Changierfadenführers stattfindet. Die mit der Changiereinrichtung gekoppelte Meßeinrichtung bietet die Möglichkeit die volle Dynamik und das volle Moment des Elektromotors, nämlich eines Schrittmotors, zu nutzen, ohne Gefahr zu laufen, daß der Motor außer Tritt fällt. Dies bringt vor allem die in den äußeren Bereichen der Bewegung des Changierfaden- fadenführers, also im Bereich der Umkehr am äußeren Rand der Spule, eine hohe Genauigkeit und Reproduzierbarkeit beim Verlegen des Fadens.Such a highly dynamic movement of the traversing thread guide can be however, can be implemented without difficulty using the method according to the invention. The particular advantage of the invention is that a permanent Comparison between the actual position and the target position of the traversing thread guide takes place. The measuring device coupled to the traversing device offers the possibility of full dynamics and the full moment of To use electric motor, namely a stepper motor, without running the risk of the motor out of step falls. This brings especially those in the outer areas of the movement of the Traversing thread guide, so in the area of reversal on the outer edge the coil, high accuracy and reproducibility when laying the Thread.

Bei einer Abweichung zwischen der Ist-Position und der Soll-Position wird ein Differenz-Signal zur Steuerung des Elektromotors erzeugt. Als Stellung des Elektromotors wird hierbei die Relation zwischen dem beweglichen Rotor und dem festen Stator des Elektromotors verstanden. Damit läßt sich der Changierfadenführer lagegeregelt über den gesamten Changierhub bewegen. Durch die kontinuierliche Justierung zwischen der Ist-Position des Changierfadenführers und der vom Elektromotor bestimmten Sollposition des Changierfadenführers ist der Elektromotor in der Lage, exakt die für jede Lage des Changierfadenführers benötigte Energie bzw. Drehmoment aufzubringen.If there is a discrepancy between the actual position and the target position generates a difference signal for controlling the electric motor. As a position of the electric motor is the relation between the movable Understood rotor and the fixed stator of the electric motor. So that can the traversing thread guide moves position-controlled over the entire traversing stroke. Due to the continuous adjustment between the actual position of the Traversing thread guide and the target position determined by the electric motor Traversing thread guide, the electric motor is able to do exactly that for everyone Position of the traversing thread guide to apply the required energy or torque.

Der besondere Vorteil der Erfindung liegt darin, daß der Elektromotor amplitudengesteuert regelbar ist. Das heißt, daß bei einer Abweichung zwischen der Ist- und der Sollposition durch das Differenzsignal der Elektromotor einen in seiner Amplitude veränderten Strom erhält. Insbesondere ist damit die Positionierung des Changierfadenführers im Umkehrbereich mit großer Genauigkeit durchführbar.The particular advantage of the invention is that the electric motor is controlled by amplitude. That means that if there is a deviation between the actual and the target position by the difference signal of the electric motor receives a current whose amplitude is changed. In particular is the positioning of the traversing thread guide in the reversal area feasible with great accuracy.

Bei einer weiteren vorteilhaften Verfahrensvariante wird zudem das Differenzsignal zur Änderung der Drehgeschwindigkeit des Elektromotors benutzt. Damit kann die Geschwindigkeit des Changierfadenführers durch den frequenzgesteuerten Motor in jeder Position innerhalb des Changierhubes auf einen vorgegebenen Verlauf geregelt werden, so daß die Wickelgesetze mit hoher Genauigkeit bei der Bildung von Spulen umgesetzt werden können. Es lassen sich beispielsweise wilde Wicklungen. Präzisionswicklungen oder konische Spulen mit entsprechenden Geschwindigkeitsprofilen mit hoher Genauigkeit ausführen. Die Changiergeschwindigkeit liegt im Bereich um ca. 800 Doppelhübe pro Minute. In a further advantageous method variant, the difference signal is also used to change the speed of rotation of the electric motor. The speed of the traversing thread guide can thus be controlled by the frequency-controlled Motor in any position within the traverse stroke a predetermined course can be regulated so that the winding laws with high accuracy in the formation of coils can be implemented. It wild windings, for example. Precision windings or conical coils with corresponding speed profiles with high Execute accuracy. The traversing speed is in the range of approx. 800 double strokes per minute.

Hierbei ist besonders von Vorteil, wenn zu jedem Wicklungstyp ein dazugehöriger Verlauf der Sollposition des Changierfadenführers innerhalb eines Changierhubes zur Steuerung des Elektromotors vorgegeben ist. Der Verlauf der Sollposition des Changierfadenführers gibt hierbei die Lage und die Geschwindigkeit des Changierfadenführers vor. Damit ist das Verfahren geeignet, um Hubverkürzungen durchzuführen. Die Huhverkürzuneng können beliebig einseitig oder auf beiden Seiten nach einem vorgegebenen Zeitprogramm verändert werden.It is particularly advantageous here if there is an associated one for each winding type Course of the target position of the traversing thread guide within a Traversing stroke for controlling the electric motor is specified. The history the target position of the traversing thread guide gives the position and the Speed of the traversing thread guide. So that's the procedure suitable for shortening the stroke. The huh shortening can arbitrarily one-sided or on both sides according to a predetermined time program to be changed.

Um möglichst exakte Fadenreserven zu Beginn der Spulreise wickeln zu können, ist es von Vorteil, wenn zu Beginn der Spulreise ein Abgleich zwischen der Lage des Changierfadenführers und der Stellung des Elektromotors anhand einer Referenz-Position durchgeführt wird.Wrap around the most exact possible thread reserves at the beginning of the winding trip , it is advantageous if a comparison is made at the beginning of the winding trip between the position of the traversing thread guide and the position of the electric motor is carried out on the basis of a reference position.

Besonders vorteilhaft ist die Verfahrensvariante, bei welcher die Referenzposition durch eines der Enden einer die Spule aufnehmenden Hülse definiert ist. Damit wird gewährleistet, daß trotz unterschiedlich langer Hülsen in jedem Falle die zur Verfügung gestellte Belegelänge der Hülse exakt mit dem Changierhub übereinstimmt.The method variant in which the reference position is particularly advantageous defined by one of the ends of a sleeve receiving the coil is. This ensures that despite sleeves of different lengths in in any case exactly with the available covering length of the sleeve the traverse stroke corresponds.

Das erfindungsgemäße Verfahren bietet die Möglichkeit, die Ist-Position des Changierfadenführers durch einen mit der Meßeinrichtung gekoppelten Sensor optisch, akustisch oder elektrisch zu erfassen. Bei optischer Erfassung werden beispielsweise Laser eingesetzt, die über eine Abstandmessung die Position des Fadenführers erfassen.The inventive method offers the possibility of the actual position of the Traversing thread guide by a sensor coupled to the measuring device to be recorded optically, acoustically or electrically. With optical detection For example, lasers are used which measure the distance Detect the position of the thread guide.

Es ist jedoch auch möglich, Ultraschall-Sensoren einzusetzen, um die Ist-Position des Changierfadenführers zu messen.However, it is also possible to use ultrasonic sensors to determine the actual position of the traversing thread guide.

Bei einer besonders vorteilhaften Verfahrensvariante, bei welcher der Fadenführer mittels eines Riementriebes bewegt wird, ist der Sensor der Meßeinrichtung mit der eine Antriebsscheibe des Riementriebes antreibenden Motorwelle des Elektromotors verbunden.In a particularly advantageous variant of the method in which the thread guide is moved by means of a belt drive, the sensor of the measuring device with which drives a drive pulley of the belt drive Motor shaft of the electric motor connected.

Dabei kann der Drehwinkel oder die Anzahl von Umdrehungen der Motorwelle erfaßt werden, was aufgrund des Übertragungsmechanismus der jeweiligen Ist-Position des Fadenführers entspricht.The angle of rotation or the number of revolutions of the motor shaft can be used what is due to the transmission mechanism of each The actual position of the thread guide corresponds.

Die Verfahrensvariante, bei welcher der Sensor auf einer der Riemenscheiben angeordnet ist, und einen Drehwinkel oder die Anzahl der Umdrehungen der Riemenscheibe erfaßt, ist besonders vorteilhaft.The process variant in which the sensor is on one of the pulleys is arranged, and an angle of rotation or the number of revolutions the pulley is particularly advantageous.

Das erfindungs gemäße Verfahren, bei welchem der Changierfadenführer mittels eines Schrittmotors angetrieben wird, ist besonders aufgrund der hohen Flexibilität von Vorteil. Ebenso ermöglichen die geringen Massenträgheiten der Schrittmotoren die Aufbringung eines hohen Momentes, was insbesondere in den Umkehrbereichen des Changierfadenführers erforderlich ist.The method according to the invention, in which the Traversing thread guide driven by a stepper motor is special an advantage due to the high flexibility. Likewise, the low inertia of the stepper motors the application of a high Moment, especially in the reversing areas of the traversing thread guide is required.

Das erfindungsgemäße Verfahren läßt sich sowohl mit einer Changiereinrichtung durchführen, bei der der Changierfadenführer innerhalb eines Changierhubes hin- und herbewegt wird, als auch durch eine Changiereinrichtung, bei der zwei gegensinnig angetriebene Changierfadenführer innerhalb eines Changierhubes bewegt werden. Die erfindungsgemäßen Changiereinrichtungen zeichnet sich besonders durch eine Reproduzierbarkeit der Fadenablage auf der Spule sowie ihrer hohen Flexibilität bezüglich des Spulenaufbaus aus.The inventive method can be both with a traversing device carry out at which the traversing thread guide within a traversing stroke is moved back and forth, as well as by a traversing device, in which two oppositely driven traversing thread guides within one Changierhubes are moved. The traversing devices according to the invention is particularly notable for the reproducibility of the thread deposit the coil and its high flexibility with regard to the coil structure.

Eine besonders vorteilhafte Weiterbildung der Changiereinrichtung sieht vor, daß mehrere Changierfadenführer zur Verlegung mehrerer Fäden in parallel zueinander angeordneten Wickelstellen vorgesehen sind. Hierbei werden die gleichsinnig bewegten Changierfadenführer durch einen Elektromotor angetrieben. Zur Lage- und Geschwindigkeitsregelung der Changierfadenführer ist jedoch nur einem der gleichsinnig bewegten Changierfadenführer die Meßeinrichtung zugeordnet. Durch dieser Ausgestaltung kann eine beliebige Anzahl von parallel angeordneten Wickelstellen einer Maschine geregelt werden.A particularly advantageous development of the traversing device provides that several traversing thread guides for laying several threads in parallel mutually arranged winding stations are provided. Here, the the traversing thread guide moved in the same direction is driven by an electric motor. The traversing thread guide is for position and speed control however, only one of the traversing thread guides moving in the same direction has the measuring device assigned. With this configuration, any Number of winding points of a machine arranged in parallel regulated become.

Um eine hohe Genauigkeit bei der Erfassung der Ist-Position des Changierfadenführers zu ereichen, wird die Changiereinrichtung bevorzugt eingesetzt, bei der ein Sensor der Meßeinrichtung im Kontakt zu dem Changierfadenführer steht.To ensure a high level of accuracy when determining the actual position of the traversing thread guide to achieve the traversing device is preferably used, in which a sensor of the measuring device in contact with the traversing thread guide stands.

Bei einer Verwendung eines kontaktlosen Sensors einer besonders bevorzugten Ausführungsvariante wird die vorhandene Flexibilität der Changiereinrichtung auch weiter erhöht.When using a contactless sensor, a particularly preferred one The existing flexibility of the traversing device becomes a variant also increased further.

Zur Erfassung der Ist-Position des Changierfadenführers lassen sich somit herkömmliche Sensoren einsetzen. So können optische Laser-Sensoren, akustische Ultraschall-Sensoren, berührungslose magnetische oder kapazitive Sensoren sowie elektrische Drehgeber eingesetzt werden.It is therefore possible to record the actual position of the traversing thread guide use conventional sensors. So optical laser sensors, acoustic ultrasonic sensors, non-contact magnetic or capacitive Sensors and electrical encoders are used.

Da aufgrund konstruktiver Gegebenheiten oftmals die Abtastung des Changierfadenführers in der Maschine auf Schwierigkeiten stößt, ist die Changiereinrichtung besonders vorteilhaft, bei welcher die Meßeinrichtung zur fassung der Ist-Position des Changierfadenführers mit einem den Changierfadenführer antreibenden Antriebsmittel gekoppelt ist.Since the tracing of the traversing thread guide is often due to the design encountering difficulties in the machine is the traversing device particularly advantageous, in which the measuring device for recording the actual position of the traversing thread guide with the traversing thread guide driving drive means is coupled.

Hierbei stellt die Changiereinrichtung, bei welcher der Changierfadenführer mittels eines Riementriebes geführt wird, eine Variante dar, bei der die zu bewegenden Massen klein sind, so daß der Elektromotor das für die hohen Geschwindigkeiten erforderliche Drehmoment aufbringen kann.Here, the traversing device, in which the traversing thread guide is guided by means of a belt drive, a variant in which the moving masses are small, so that the electric motor for the high Speeds required torque can apply.

Der Riemen wird hierbei über eine Riemenscheibe und eine Antriebsscheibe geführt. Der Elektromotor ist mit der Antriebsscheibe gekoppelt, so daß die Drehbewegung auf den Riemen übertragen wird. Der Riemen kann auch durch ein Seil oder ein sonstiges bandförmiges Mittel ausgeführt sein.The belt is here over a pulley and a drive pulley guided. The electric motor is coupled to the drive pulley, so that the Rotational motion is transmitted to the belt. The strap can too be carried out by a rope or another band-shaped means.

Die Weiterbildung der Changiereinrichtung, bei welcher der Sensor der Meßeinrichtung eine Anzahl von pro Längeneinheit auf den Riemen eingebrachte Markierungen erfaßt, besitzt den Vorteil, daß damit das unmittelbare Übertragungsglied der Bewegung des Changierfadenführers sensiert wird. Als Markierungen können hierbei beispielsweise die Zähne eines Zahnriemens verwendet werden.The development of the traversing device, in which the sensor of Measuring device introduced a number of per unit length on the belt Marks detected, has the advantage that the immediate Transmission member of the movement of the traversing thread guide is sensed. As Markings can be the teeth of a toothed belt, for example be used.

Die Ausführung der Changiereinrichtung, bei welcher der Sensor der Meßeinrichtung direkt an dem Elektromotor derart angeordnet ist, daß die Winkellage oder die Anzahl von Umdrehungen der mit der Antriebsscheibe verbundenen Motorwelle erfaßt wird, führt zu einer besonders kompakten Bauweise.The design of the traversing device, in which the sensor of the measuring device is arranged directly on the electric motor such that the Angular position or the number of revolutions of the drive pulley connected motor shaft is detected, leads to a particularly compact Construction.

Zudem läßt sich die Anbindung der Meßeinrichtung mit der Steuereinrichtung so gestalten, daß hohe Übertragungsgenauigkeiten der Signale erreicht werden. Die Abstimmung zwischen der Ist-Position und der Sollposition des Changierfadenführers läßt sich somit bei Minimierung der Störgrößeneinflüsse in sehr kurzen Regelzeiten abgleichen.It is also possible to connect the measuring device to the control device Design so that high transmission accuracy of the signals is achieved become. The coordination between the actual position and the target position of the Traversing thread guide can thus be minimized with the influence of disturbance variables adjust in very short regular times.

Besonders vorteilhaft ist dabei erfindungsgemäß der Antrieb des Changierfadenführers mittels eines Schrittmotors. Aufgrund der hohen Polpaare von beispielsweise 50 Polen, läßt sich sie Soll-Position des Changierfadenführers innerhalb des Changierhubes sehr genau einstellen. Mittels der Meßeinrichtung und der damit verbundenen Regelung gelingt es, die bei dem Schrittmotor häufig auftretenden Schwingungen bei schnellen Reversiervorgängen zu beseitigen. Hierdurch kann der Schritt-motor weit besser ausgenutzt werden als dies in den meist nur gesteuerten Betrieben möglich ist.According to the invention, the drive of the traversing thread guide by means of is particularly advantageous a stepper motor. Due to the high pole pairs of 50, for example Poland, it can be the target position of the traversing thread guide within the Set the traverse stroke very precisely. By means of the measuring device and associated control succeeds, which is common with the stepper motor eliminate vibrations that occur during rapid reversing processes. As a result, the stepper motor can be used much better than in most of the time only controlled companies are possible.

Weitere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen definiert.Further advantageous developments of the invention are in the subclaims Are defined.

Die Erfindung wird anhand einiger Ausführungsbeispiele unter Hinweis auf die beigefügten Zeichnungen näher beschrieben.The invention is illustrated by means of a few exemplary embodiments the accompanying drawings described in more detail.

Es stellen dar:

Fig. 1 bis 3
schematisch ein erstes Ausführungsbeispiel einer erfindungsgemäßen Changiereinrichtung mit jeweils unterschiedlichen Meßeinrichtungen;
Fig. 4
ein Diagramm mit mehreren Verläufen der Soll-Position des Changierfadenführers innerhalb eines Changierhubes:
Fig. 5
schematisch ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Changiereinrichtung:
Fig. 6
schematisch ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Changiereinrichtung.
They represent:
1 to 3
schematically a first embodiment of a traversing device according to the invention, each with different measuring devices;
Fig. 4
a diagram with several courses of the target position of the traversing thread guide within a traversing stroke:
Fig. 5
schematically another embodiment of a traversing device according to the invention:
Fig. 6
schematically another embodiment of a traversing device according to the invention.

In den Figuren 1 bis 3 ist jeweils eine erfindungsgemäße Changiereinrichtung gezeigt, die sich nur in der Ausführung der Meßeinrichtungen unterscheiden. Daher wird die Changiereinrichtung aus den Figuren 1 bis 3 nachfolgend gemeinsam beschrieben.FIGS. 1 to 3 each have a traversing device according to the invention shown, which differ only in the design of the measuring devices. Therefore, the traversing device from FIGS. 1 to 3 described below together.

Ein Changierfadenführer 3 wird mittels eines Elektromotors 7 beispielsweise eines Schrittmotors innerhalb eines Changierhubes hin- und herbewegt.A traversing thread guide 3 is, for example, by means of an electric motor 7 a stepper motor back and forth within a traversing stroke.

Die Übertragung der Bewegung des Elektro-Motors 7 zum Changierfadenführer 3 erfolgt über einen Riemen 6. Der Riemen 6 umschlingtdie Riemenscheiben 4.1 und 4.2 sowie die Antriebsscheibe 5. Der Changierfadenführer 3 ist fest mit dem endlosen Riemen 6 verbunden und wird an dem Riemen 6 zwischen den Riemenscheiben 4.1 und 4.2 hin- und hergeführt. Die Riemenscheiben 4.1 und 4.2 sind jeweils frei drehbar an einer Achse gelagert. Die Antriebsscheibe 5 ist an einer Motorwelle 9 befestigt. Die Motorwelle 9 wird mit dem Elektromotor 7 mit wechselndem Drehsinn angetrieben.The transmission of the movement of the electric motor 7 to the traversing thread guide 3 takes place via a belt 6. The belt 6 wraps around the pulleys 4.1 and 4.2 and the drive pulley 5. The traversing thread guide 3 is firmly connected to the endless belt 6 and is on the belt 6 back and forth between the pulleys 4.1 and 4.2. The Pulleys 4.1 and 4.2 are each freely rotatable on one axis stored. The drive pulley 5 is attached to a motor shaft 9. The Motor shaft 9 is with the electric motor 7 with an alternating direction of rotation driven.

Parallel zu dem zwischen den Riemenscheiben 4.1 und 4.2 gespannten Riemen 6 ist eine Spulspindel 14 angeordnet, auf der eine Hülse 15 befestigt ist. Auf der Hülse 15 wird eine Spule 1 gewickelt. An der Oberfläche der Spule 1 liegt eine Treibwalze 2 an. Die Spulspindel 14 wird über die im Umfangskontakt zu der Spule 1 stehenden Treibwalze angetrieben. Ein Faden 13, der auf die Spule 1 gewickelt wird, wird von dem Changierfadenführer 3 entsprechend einem vorgewählten Wickelgesetzt inerhalb des Changierhubes bewegt.
Dabei kann die Position des Changierfadenführers beliebige Werte innerhalb des Changierhubes annehmen. Die Positionen des Changierfadenführers innerhalb des Changierhubes werden durch den Elektromotor 7 bestimmt. Der Durchmesser der Antriebsscheibe bestimmt sich aus dem Drehmoment des Elektromotors 7 und dem Changierhub des Changierfadenführes 3. Der Umfang der Antriebsscheibe 5 kann kleiner oder größer sein als der Changierhub des Fadenführers. Die Antriebsscheibe 5 ist aus einem Leichtmaterial hergestellt, beispielsweise Kunststoff, um eine geringe Massenträgheit zu realisieren.Arranged parallel to the belt 6 stretched between the pulleys 4.1 and 4.2 is a winding spindle 14 on which a sleeve 15 is fastened. A coil 1 is wound on the sleeve 15. A drive roller 2 rests on the surface of the coil 1. The winding spindle 14 is driven by the drive roller in circumferential contact with the coil 1. A thread 13 which is wound on the bobbin 1 is moved by the traversing thread guide 3 in accordance with a preselected winding set within the traversing stroke.
The position of the traversing thread guide can assume any values within the traversing stroke. The positions of the traversing thread guide within the traversing stroke are determined by the electric motor 7. The diameter of the drive pulley is determined from the torque of the electric motor 7 and the traversing stroke of the traversing thread guide 3. The circumference of the traction sheave 5 can be smaller or larger than the traversing stroke of the thread guide. The drive pulley 5 is made of a light material, for example plastic, in order to achieve a low mass inertia.

Der Elektromotor 7 ist über eine Steuereinrichtung 11 ansteuerbar. Der Steuereinrichtung 11 werden von einer übergeordneten Steuerung die Verläufe der Soll-Position innerhalb des Changierhubes vorgegeben. Hierbei können zu jedem Wickelgesetz die für den Changierfadenführer charakteristischen Soll-Werte in ihrer Lage und Geschwindigkeit vorgegeben werden. Darüberhinaus sind Vorgaben zur Spiegelstörung während des Aufspulens sowie zur Hubverkürzung des Changierhubes möglich. Hierzu werden der Steuereinrichtung 11 die Drehzahl-Signale der Spule 1 und der Treibwalze 2 aufgegeben.The electric motor 7 can be controlled via a control device 11. The Control device 11, the courses of a higher-level control the target position within the traversing stroke. in this connection can for each winding law the characteristic of the traversing thread guide Target values are specified in their position and speed. In addition, there are guidelines for mirror disturbance during winding as well as to shorten the traverse stroke. For this, the Control device 11, the speed signals of the coil 1 and the drive roller 2 abandoned.

Die Steuereinrichtung 11 ist mit einer Meßeinrichtung 8 verbunden. Die Meßeinrichtung 8 weist einen Sensor 10 auf, welcher die Ist-Position des Changierfadenführers 3 erfaßt. Die Position des Changierfadenführers 3 wird durch den Sensor 10 dabei innerhalb des Changierhubes und auch außerhalb des Changierhubes, beispielsweise beim Fadenwechsel, gemessen. Die Meßeinrichtung 8 übermittelt die Meßsignale an die Steuereinrichtung 11.The control device 11 is connected to a measuring device 8. The Measuring device 8 has a sensor 10 which detects the actual position of the Traversing thread guide 3 detects. The position of the traversing thread guide 3 is by the sensor 10 within the traversing stroke and also outside of the traversing stroke, for example when changing the thread. The measuring device 8 transmits the measurement signals to the control device 11.

In Fig. 1 ist die Meßeinrichtung 8 mit einem elektrischen Sensor 10 verbunden, welcher Kontakt zu dem Changierfadenführer 3 hat.1, the measuring device 8 is connected to an electrical sensor 10, which has contact with the traversing thread guide 3.

Hierbei besteht der Sensor 10 aus einem Potentiometer, an welchem der Changierfadenführer hin- und hergeführt wird und somit ein elektrisches Signal erzeugt, was von der Wegmeß-einrichtung 8 aufgenommen wird und der Steuereinrichtung 11 zugeführt wird. Um die Position des Changierfadenführers kontaktlos zu erfassen, könnte der Sensor 10 mit dem Changierfadenführer 3 magnetisch gekoppelt sein. Here, the sensor 10 consists of a potentiometer, on which the Traversing thread guide is guided back and forth and thus an electrical Signal generates what is recorded by the path measuring device 8 and is supplied to the control device 11. To the position of the traversing thread guide Detect contactless, the sensor 10 with the traversing thread guide 3 be magnetically coupled.

In Fig. 2 ist eine Meßeinrichtung gezeigt, welche einen optischen Sensor 10 aufweist. Der optische Sensor 10 erzeugt einen Laser-Strahl, der auf den Changierfadenführer gerichtet ist. Das Meßsignal wird wiederum von der Meßeinrichtung 8 zur Steuereinrichtung 11 geführt. Hierbei kann der durch den optischen Sensor gemessene Abstand innerhalb der Wegmeßein- richtung 8 in eine Position des Changierfadenführers transferiert werden.FIG. 2 shows a measuring device which has an optical sensor 10 having. The optical sensor 10 generates a laser beam which is directed onto the Traversing thread guide is directed. The measurement signal is in turn from the Measuring device 8 led to the control device 11. Here, the through the distance measured by the optical sensor within the path measuring device 8 are transferred to a position of the traversing thread guide.

In Fig. 2 ist eine weitere Ausführungsvariante gestrichelt eingetragen. Hierbei ist die Meßeinrichtung mit dem optischen Sensor 10 derart angeordnet, daß der Riemen 6 von dem optischen Sensor 10 abgetastet wird. Hierbei wäre eine Anordnung des Sensors auch innerhalb des Riementriebes möglich, um bei einem Zahnriemen die in den Riemen eingebrachten Zähne als Signal zu verwenden.A further embodiment variant is shown in dashed lines in FIG. 2. Here, the measuring device with the optical sensor 10 is arranged such that the belt 6 is scanned by the optical sensor 10. The sensor would also be arranged inside the belt drive possible for the teeth in a toothed belt to use as a signal.

In Fig. 3 ist ein weiteres Ausführungsbeispiel gezeigt, bei welchem die Meßeinrichtung direkt an dem Elektromotor 7 angerodnet ist. Der Sensor 10 der Meßeinrichtung 8 ist hierbei als Drehgeber ausgeführt und erfaßt die Winkellage oder die Umdrehung der Motorwelle 9.3 shows a further embodiment in which the Measuring device is directly connected to the electric motor 7. The sensor 10 the measuring device 8 is designed as a rotary encoder and detects the Angular position or the revolution of the motor shaft 9.

Es ist jedoch auch möglich, den Drehgeber mit der Wegmeß-einrichtung an eine der Riemenscheiben 4.1 oder 4.2 anzuordnen, wie in Fig. 3 gestrichelt eingetragen.However, it is also possible to connect the encoder with the position measuring device to arrange one of the pulleys 4.1 or 4.2, as dashed lines in Fig. 3 entered.

Alle in den Figuren 1 bis 3 gezeigten Meßeinrichtungen erfassen die Ist-Position des Changierfadenführers während der Spulreise. Die Ist-Position wird der Steuereinrichtung 11 aufgegeben. Die Steuereinrichtung 11 führt einen Vergleich zwischen den vorgegebenen Soll-Werten sowie den IstWerten der Changierfadenführerposition durch. Ein von der Steuereinrichtung 11 erzeugtes Differenzsignal wird zur Steuerung des Elektromotors 7 dem Elektromotor 7 aufgegeben. Die Spulen des Elektromotors 7 werden durch das Differenzsignal derart geschaltet, daß eine Lage- und Geschindigkeitsänderung eintritt. Die Steuereinrichtung 11 beinhaltet eine Mikroprozssorsteuerung und ein Leistungsteil für den Elektromotor, üher welches der Motorstrom erfaßt und das Drehmoment des Elektromotors 7 verändert werden kann. Es wird somit sowohl Lage als auch Drehgeschwindigkeit der Motorwelle geregelt. Die Changiereinrichtung braucht keine besondere Ausrichtung der Motorwelle des Motors 7 zu demm Changierfadenführer 3. Die Steuereinrichtung 11 kann zur Feststellung der Position des Changierfadenführers vor Beginn des Wickelvorgangs eine Referenzfahrt dergestalt durchführen, daß der Elektromotor 7 mit sehr geringem Drehmoment in eine Richtung bis zu einer Riemenscheiben 4.1 oder 4.2 gefahren wird. Durch das geringe Drehmoment erfolgt keine mechanische Beschädigung.All measuring devices shown in Figures 1 to 3 detect the actual position of the traversing thread guide during the winding trip. The actual position the control device 11 is abandoned. The control device 11 leads a comparison between the specified target values and the actual values the traversing thread guide position. One from the control device 11 generated difference signal is used to control the electric motor 7 Electric motor 7 abandoned. The coils of the electric motor 7 are through the difference signal switched such that a change in position and speed entry. The control device 11 includes a microprocessor control and a power unit for the electric motor, whichever one Motor current detected and the torque of the electric motor 7 changed can be. It is thus both location and speed of rotation Motor shaft regulated. The traversing device does not need any special one Alignment of the motor shaft of the motor 7 with the traversing thread guide 3. The control device 11 can be used to determine the position of the traversing thread guide do a reference run before starting the winding process perform that the electric motor 7 with very low torque in a Direction up to a pulley 4.1 or 4.2 is driven. By the low torque does not cause mechanical damage.

Die Steuereinrichtung 11 kann während des Wickelvorgangs den Riemen auf Bruch überwachen, indem der Motorstrom auf Änderung überwacht wird. Eine Überwachung auf Bruch des Riemens 6 kann von der lokalen Steuereinheit auch bei der Referenzfahrt durch Zeitüberwachung durchgeführt werden.The control device 11 can remove the belt during the winding process Monitor for breakage by monitoring the motor current for change becomes. Monitoring for breakage of the belt 6 can be done by the local Control unit also carried out during the reference run by time monitoring become.

Die Übertragung der Drehbewegung des Elektromotors 7 läßt sich grundsätzlich auch durch andere riemenähnliche Mittel, wie beispielsweise Seile, Bänder, Ketten oder Drähte, durchführen.The transmission of the rotary movement of the electric motor 7 can basically also by other belt-like means, such as ropes, Carry out straps, chains or wires.

In Fig. 4 ist beispielshaft ein Diagramm mit dem Verlauf der Soll-Position des Changierfadenführers gezeigt. Auf der Ordinate ist der vom Fadenführer zurückgelegte Weg eingetragen. Der Changierhub H wird hierbei durch die Teilstrecken BL, L und BR gebildet. Bei einem hin- und hergeführten Changierfadenführer wird der Fadenführer am jeweiligen Hubende aus seiner Führungsgeschwindigkeit abgebremst und wieder beschleunigt. Das Diagramm zeigt einen grundsätzlichen Zusammenhang zwischen der Geschwindigkeit des Changierfadenführers und dem Changierhub. Die Umkehr der Strecken an den Enden des Changierhubes sind mit BL und BR bezeichnet. Auf der Abszisse ist Geschwindigkeit des Changierfadenführes eingetragen. Beginnt man nun am Nullpunkt des Diagramms, so wird der Fadenführer zunächst beschleunigt. Diese Beschleunigung erfolgt nach einer Funktion, die in ihrer Form beliebig ist, beispielsweise kreisförmig, parabolisch, hyperbolisch usw.. Die Beschleunigungsphase des Changierfadenführers ist nach Erreichen einer vorgegebenen Führungsgeschwindigkeit abgeschlossen. Dieser Punkt ist durch den Übergang von der Umkehrstrecke B zur Linearstrecke L gekennzeichnet. Innerhalb der Linearstrecke L ist die Geschwindigkeit des Fadenführers konstant. Um die Bewegung des Fadenführers am gegenüberliegenden Ende umzukehrern, wird der Fadenführer nun innerhalb der Umkehrstrecke BR verzögert. Die Verzögerung des Fadenführers erfolgt wiederum nach einer Funktion. Nachdem der Changierfadenführer die Geschwindigkeit Null aufweist, wird der gesamte Ablauf wiederholt.4 shows a diagram with the course of the desired position of the traversing thread guide. The path covered by the thread guide is entered on the ordinate. The traversing stroke H is formed by the sections B L , L and B R. In the case of a reciprocating traversing thread guide, the thread guide is braked from its guide speed at the end of the stroke and accelerated again. The diagram shows a basic relationship between the speed of the traversing thread guide and the traversing stroke. The reversal of the distances at the ends of the traversing stroke are denoted by B L and B R. The speed of the traversing thread guide is entered on the abscissa. If you now start at the zero point of the diagram, the thread guide is first accelerated. This acceleration takes place according to a function which is arbitrary in its shape, for example circular, parabolic, hyperbolic, etc. The acceleration phase of the traversing thread guide is completed after a predetermined guide speed has been reached. This point is characterized by the transition from the reverse section B to the linear section L. The speed of the thread guide is constant within the linear path L. In order to reverse the movement of the thread guide at the opposite end, the thread guide is now decelerated within the reversing distance B R. The thread guide is decelerated according to a function. After the traversing thread guide has zero speed, the entire process is repeated.

In Fig. 4 sind drei Kurvenläufe mit unterschiedlichen Führungsgeschwindigkeiten dargestellt. Zur Kennzeichnung der Führungsgeschwindigkeit wurden die Doppelhubzahlen des Changierfadenführers pro Minute angegeben. Hierbei handelt es sich um in der Praxis übliche eingestellte Werte von 300, 600, 800 Doppelhüben/min. Durch diese Verläufe ist die Sollposition des Changierfadenführers in seiner Lage und Geschwindigkeit vorgegeben und dient der Steuerung des Elektromotors. Bei einem Ist-Soll-Vergleich wird in der Steuereinrichtung die jeweilige ermittelte Ist-Position in Lage und Geschwindigkeit mit der Soll-Position verglichen. Ein von der Steuereinrichtung erzeugtes Differenzsignal führt dann zu einer entsprechenden Regelung des Elektromotors.In Fig. 4 are three turns with different guide speeds shown. To identify the guide speed were the double stroke numbers of the traversing thread guide per minute are given. These are the values that are set in practice 300, 600, 800 double strokes / min. Through these courses is the target position of the traversing thread guide in its position and speed and serves to control the electric motor. In an actual-target comparison the respective determined actual position is positioned in the control device and speed compared with the target position. One from the control device generated difference signal then leads to a corresponding Regulation of the electric motor.

In Fig. 5 ist ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Changiereinrichtung gezeigt. Hierbei sind identische Funktionsbauteile mit gleichen Bezugszeichen versehen.5 is another embodiment of an inventive Traversing device shown. Identical functional components are included provided with the same reference numerals.

Die Changiereinrichtung besteht aus zwei Riementrieben mit gekreuzten Riemen 6.1 und 6.2. Ein Riementrieb wird durch die Antriebsscheibe 5.1 und den Riemenscheiben 4.1 und 4.2 gebildet, die den endlosen Riemen 6.1 führen. Die Antriebsscheibe 5.1 ist an einem Ende einer Motorwelle 9.1 befestigt und wird durch den Elektromotor 7.1 entgegen dem Uhrzeigersinn angetrieben (Pfeilrichtung). An dem Riemen 6.1 ist ein Changierfadenführer 3.1 befestigt.The traversing device consists of two belt drives with crossed ones Belts 6.1 and 6.2. A belt drive is through the drive pulley 5.1 and the pulleys 4.1 and 4.2 formed, the endless belt 6.1 to lead. The drive pulley 5.1 is at one end of a motor shaft 9.1 attached and is counter-clockwise by the electric motor 7.1 driven (arrow direction). A traversing thread guide is on the belt 6.1 3.1 attached.

Der zweite Riementrieb besteht aus der Antriebsscheibe 5.2 und den Riemenscheiben 4.3 und 4.4 sowie dem darin geführten endlosen Riemen 6.2. Die Antriebsscheibe 5.2 ist an einer Motorwelle 9.2 befestigt und wird mittels des Elektromotors 7.2 im Uhrzeigersinn angetrieben (Pfeilrichtung). An dem Riemen 6.2 ist ein Fadenführer 3.2 befestigt. Die Riementriebe sind in parallelen Ebenen zueinander angeordnet, so daß die Riemenscheiben 4.1 und 4.3 sowie die Riemenscheiben 4.2 und 4.4 koaxial zueinander liegen. Parallel zu den Riemenscheiben ist unterhalb der Riementriebe eine zu wickelnde Spule 1 angeordnet. Die Spule 1 wird hierbei auf einer Hülse 15 gewickelt, die über eine Spulspindel 14 angetrieben wird. Die Spulspindel 14 kann beispielsweise durch einen Elektromotor angetrieben werden. Zwischen dem Riementrieb und der Spule 1 ist eine Andrückwalze angeordnet, die aufgrund der Übersichtlichkeit in Fig. 5 nicht eingezeichnet ist.The second belt drive consists of the drive pulley 5.2 and the belt pulleys 4.3 and 4.4 and the endless belt 6.2 contained therein. The drive pulley 5.2 is attached to a motor shaft 9.2 and is driven clockwise by the electric motor 7.2 (direction of arrow). A thread guide 3.2 is attached to the belt 6.2. The belt drives are arranged in parallel planes to each other, so that the pulleys 4.1 and 4.3 as well as the pulleys 4.2 and 4.4 coaxial to each other lie. Parallel to the pulleys is one below the belt drives coil 1 arranged to be wound. The coil 1 is here on a sleeve 15 wound, which is driven via a winding spindle 14. The winding spindle 14 can be driven by an electric motor, for example. Between a pressure roller is arranged on the belt drive and the spool 1, which is not shown in FIG. 5 due to the clarity.

Die Andrückwalze liegt mit einer Anlagekraft an der Spulenoberfläche an. Die von der Spule 1 angetriebene Andrückwalze wird während der Spulreise mit konstanter Drehzahl betrieben. Hierzu wird der Antrieb der Spulspindel 14 entsprechend dem Durchmesserzuwachs verlangsamt.The pressure roller lies with a contact force on the surface of the spool. The pressure roller driven by the bobbin 1 becomes during the winding cycle operated at constant speed. For this the drive of the winding spindle 14 slowed down according to the diameter increase.

Der Faden 13, der in Fig. 5 in die Zeichnungsebene im wesentlichen senkrecht eintritt, wird nun mittels der Changierfadenrführer 3.1 und 3.2 entlang der Changierstrecke, die im wesentlichen gleich der Spulenlänge ist, geführt. In der gezeigten Position in Fig. 5 wird der Faden 13 zur Zeit von dem Changierfadenführer 3.2 zum linken Ende Spule mittels des Riemens 6.2 geführt. Die Riemenscheibe 4.4 besitzt gegenüber der koaxial angeordneten Riemenscheibe 4.2 des zweiten Riementriebes einen kleineren Durchmesser. Dadurch taucht der Changierfadenführer 3.2 zum Teil unterhalb des Changierfadenführers 3.1 ab und gibt somit dem Faden aus seiner Führungskerbe frei. Nachdem der Faden am Ende der Changierstrecke von dem Fadenführer 3.1 übernommen wurde, wird der Faden in entgegengesetzter Richtung zum rechten Ende der Spule 14 geführt. Da die Riemenscheibe 4.1 des Riemens 6.1 einen kleineren Durchmesser gegenüber der Riemenscheibe 4.3 des Riemens 6.2 aufweist, ergibt sich ein gekreuzter Verlauf der Riemen 6.1 und 6.2. Die Fadenübergabe wird somit am rechten Ende der Spule auf gleicher Weise wie die Fadenübergabe am linken Ende der Spule wiederholt. Während der Faden durch den Changierfadenführer 3.2 geführt wird, wird die Ist-Position des Changierfadenführers 3.2 über einer an dem Elektromotor 7.2 angeordneten Nleßeinrichtung 8.2 gemessen. Die Meßeinrichtung 8.2 ist hierbei identisch zu der in Fig. 3 gezeigten Meßeinrichtung. Insoweit wird Bezug genommen auf die Beschreibung zu Fig. 3. Die Meßeinrichtung 8.2 ist mit der Steuereinrichtung 11.2 verbunden. Die Steuereinrichtung 11.2 steuert den Elektromotor 7.2. Der Elektromotor 7.2 wird derart gesteuert, daß der Fadenführer 3.2 während der Führung des Fadens mit einer Führungsgeschwindigkeit bewegt wird. Nachdem der Faden am Ende der Changierstrecke auf den Fadenführer 3.1 übergeben wurde, wird der Fadenführer 3.2 mit einer Wechselgeschwindigkeit durch den Elektromotor 7.2 bewegt, die höher ist als die Führungsgeschwindigkeit. Bei der Erfassung der Ist-Position des Changierfadenführers kann somit anhand der Regelgeschwindigkeit der Motorwelle und der Anzahl der Umdrehungen jede Position des Fadenführers erfaßt werden. The thread 13 in Fig. 5 in the plane of the drawing essentially enters vertically, is now using the traverse guide 3.1 and 3.2 along the traverse path, which is essentially equal to the coil length, guided. In the position shown in Fig. 5, the thread 13 is currently from the traversing thread guide 3.2 to the left end of the bobbin by means of the Belt 6.2 led. The pulley 4.4 has compared to the coaxial arranged pulley 4.2 of the second belt drive a smaller Diameter. As a result, the traversing thread guide 3.2 partially dips below of the traversing thread guide 3.1 and thus outputs the thread his leadership notch free. After the thread at the end of the traverse path was taken over by the thread guide 3.1, the thread is in the opposite Directed to the right end of the coil 14. Because the pulley 4.1 of the belt 6.1 a smaller diameter compared to the Has pulley 4.3 of the belt 6.2, there is a crossed Course of the belts 6.1 and 6.2. The thread transfer is thus on the right End of the bobbin in the same way as the thread transfer at the left end the coil is repeated. During the thread through the traversing thread guide 3.2 is guided, the actual position of the traversing thread guide 3.2 over a measuring device 8.2 arranged on the electric motor 7.2. The measuring device 8.2 is identical to that shown in FIG. 3 Measuring device. In this respect, reference is made to the description Fig. 3. The measuring device 8.2 is connected to the control device 11.2. The control device 11.2 controls the electric motor 7.2. The electric motor 7.2 is controlled so that the thread guide 3.2 during the Guide the thread is moved at a guide speed. After this the thread at the end of the traverse path on the thread guide 3.1 was passed, the thread guide 3.2 with an alternating speed moved by the electric motor 7.2, which is higher than the guide speed. When recording the actual position of the traversing thread guide can therefore be based on the control speed of the motor shaft and the number the revolutions each position of the thread guide are detected.

An den Elektromotor 7.1 ist ebenfalls eine Meßeinrichtung 8.1 angeordnet. Die Meßeinrichtung 8.1 ist mit einer dem Elektromotor 7.1 zugeordneten Steuereinrichtung 11.1 verbunden. Die Steuerung des Elektro-Motors 7.1 erfolgt hierbei analog der Steuerung des Elektromotors 7.2. Die Steuereinrichtungen 11.1 und 11.2 sind über eine zentrale Steuerung miteinarder gekoppelt. Durch die Koppelung können nun die Führungsgeschwindigkeit sowie die Wechselgeschwindigkeit der beiden Riementriebe derart gesteuert werden, daß die Fadenübergabe im vorgegebenen Punkt im Hubende erfolgt. Hierbei garantiert die durch die Wegmeß-einrichtungen ermöglichte Regelung der Changierantriebe eine exakte Einhaltung der Übergabepunkt bei der Fadenübergabe in den Hubenden.A measuring device 8.1 is also arranged on the electric motor 7.1. The measuring device 8.1 is associated with an electric motor 7.1 Control device 11.1 connected. The control of the electric motor 7.1 This is done analogously to the control of the electric motor 7.2. The control devices 11.1 and 11.2 work together via a central controller coupled. By coupling, the guide speed can now and the change speed of the two belt drives controlled in this way be that the thread transfer takes place at the specified point at the end of the stroke. The regulation made possible by the measuring devices guarantees this the traversing drives an exact adherence to the transfer point at the Thread transfer in the hub ends.

In Fig. 5 ist eine weitere mögliche Anordnung gestrichelt eingetragen. Hierbei werden die Elektromotoren 7.1 und 7.2 direkt von einer zentralen Steuereinrichtung 11 angesteuert, die mit einer die Ist-Position des Changierfadenführes 3.1 erfassenden Regel-Meß-Einrichtung 8.1 verbunden und mit der die Ist-Position des Changierfadenführers 3.2 erfassenden Weg-meßeinrichtung 8.1 verbunden ist. Bei dieser Anordnung werden die Changierfadenführer nur innerhalb der Changierstrecke in ihrer Position erfaßt. Außerhalb der Changierstrecke, während die Changierfadenführer mit der Wechselgeschwindigkeit betrieben werden, ist eine Positionserfassung nicht vorgesehen. Somit werden die Elektro-Motoren 7.1 und 7.2 nur während der Phase, in der die Motorwelle mit der Führungsgeschwindigkeit angetrieben werden, geregelt.A further possible arrangement is shown in broken lines in FIG. 5. Here, the electric motors 7.1 and 7.2 directly from a central Control device 11 controlled, which with an the actual position of the traversing thread guide 3.1 detecting control-measuring device 8.1 connected and with the path measuring device which detects the actual position of the traversing thread guide 3.2 8.1 is connected. With this arrangement, the traversing thread guides only detected in their position within the traversing path. Outside the traverse path, while the traverse guide with the Position change is not operated intended. Thus, the electric motors 7.1 and 7.2 are only during the Phase in which the motor shaft is driven at the leading speed are regulated.

Die erfindungsgemäße Changiereinrichtung ist nicht nur auf eine Wickelstelle beschränkt. Die Changiereinrichtung läßt sich auf beliebig viele nebeneinander angeordnete Wickelstellen erweitern. Bei einer Changiereinrichtung nach Fig. 6 sind zwei hintereinander angeordnete Changierfadenführer 3.1 und 3.2 mittels eines Riementriebes mit einem Elektromotor 7 angetrieben. The traversing device according to the invention is not only for one winding point limited. The traversing device can be juxtaposed to any number Extend arranged winding stations. With a traversing device 6 are two traversing thread guides 3.1 arranged one behind the other and 3.2 driven by means of a belt drive with an electric motor 7.

In diesem Fall wird nur einem der Changierfadenführer 3.1 eine Meßeinrichtung zugeordnet. Im übrigen sind die Bezugszeichen wie in Fig. 5.In this case, only one of the traversing yarn guides 3.1 becomes a measuring device assigned. Otherwise, the reference numerals are as in FIG. 5.

Bei einer Changiereinrichtung nach Fig. 5 könnte die Erweiterung derart erfolgen, daß ebenfalls mehrere Fadenführer hintereinander an einem Riemenantrieb befestigt sind. Hierbei könnten die Riementriebe spiegelbildlich zueinander angerodnet sein, so daß die an den Riemen geführten Changierfadenführer sich jeweils gegenüberstehen.In the case of a traversing device according to FIG. 5, the extension could be such take place that also several thread guides in a row on a belt drive are attached. The belt drives could be mirror images be aligned with each other so that the traversing thread guides guided on the belt face each other.

Die Erfindung beschränkt sich jedoch nicht auf Changiereinrichtungen, die mittels eines Riementriebes einen Changierfadenführer bewegen. Grundsätzlich kann jeder Changierantrieb, bei welchem ein Fadenführer mittels eines Antriebes bewegt und positioniert wird, nach dem erfindungsgemäßen Verfahren geregelt werden. Der ständige Abgleich zwischen der Ist-Position und der Sollposition des Changierfadenführers führt zu einer sehr hohen Genauigkeit bei der Fadenablage. Damit lassen sich die Spulenaufbauten bei jeder zu wickelnden Spule reproduzieren.However, the invention is not limited to traversing devices that move a traversing thread guide using a belt drive. in principle can any traversing drive, in which a thread guide by means of a Drive is moved and positioned, according to the inventive method be managed. The constant comparison between the actual position and the set position of the traversing thread guide leads to very high accuracy with the thread deposit. This allows the coil assemblies to be used on everyone reproduce the winding to be wound.

Claims (21)

  1. Method of traversing a yam (13) with a traversing apparatus, wherein for guiding the yam (13) wound on a package (1) a traversing yam guide (3) is moved within a traverse stroke by a stepping motor (7), wherein a predetermined desired position of the traversing yarn guide (3) is determined by a setting of the stepping motor (7), and wherein an actual position of the traversing yam guide (3) is determined by means of a measuring device (8), characterized in that the actual position is continuously determined, that a comparison is made between the respective actual position and the predetermined desired position of the traversing yam guide (3), and that a differential signal is generated for controlling the setting of the stepping motor (7), whereby the traversing yarn guide (3) is moved location-controlled over the entire traverse stroke.
  2. Method of claim 1, characterized in that the differential signal effects a variation of the rotational speed of the stepping motor (7).
  3. Method of one of claims 1 or 2, characterized in that a sequence of desired positions of the traversing yarn guide (3) within a traverse stroke is predetermined with respect to location and/or speed for controlling the stepping motor (7).
  4. Method of claim 3, characterized in that for each kind of wind an associated sequence of desired positions of the traversing yam guide (3) within a traverse stroke is predetermined for controlling the stepping motor (7).
  5. Method of one of the foregoing claims, characterized in that at the beginning of a winding cycle an adjustment occurs in a reference position between the position of the traversing yam guide (3) and the setting of the stepping motor (7).
  6. Method of claim 5, characterized in that the reference position is defined by one of the ends of a tube (15) receiving the package (1).
  7. Method of one of the foregoing claims, characterized in that the actual position of the traversing yam guide (3) is continuously determined, optically, acoustically, or electrically, by a sensor (10) of the measuring device (8).
  8. Method of claim 7, characterized in that an angle of rotation or a number of revolutions of a drive pulley (5) connected to the shaft (9) of the stepping motor (7) is determined, which pulley drives a circulating belt (6) connected to the traversing yam guide (3).
  9. Method of claim 8, characterized in that an angle of rotation or the number of revolutions of a belt (6) guiding pulley (4.1, 4.2) is determined.
  10. Method of claim 7, characterized in that a number of markings arranged per unit of length on a belt (6) are determined, the traversing yam guide (3) being connected to the belt and moved by means of a belt drive within the traverse stroke.
  11. Apparatus for traversing a yarn (13) with a traversing yarn guide (3) that is reciprocated within a traverse stroke, and a stepping motor (7) driving the traversing yam guide (3), wherein the desired position of the traversing yam guide (3) is determined by a setting of the stepping motor (7), wherein an actual position of the traversing yam guide (3) is determined by means of a measuring device (8), and wherein a desired position of the traversing yarn guide (3) is input in a control device (11) connected to the stepping motor (7), characterized in that the measuring device (8) is designed and constructed such that the actual position of the traversing yam guide (3) can be continuously determined and supplied to the control device (11), and that the control device (11) comprises means for generating from the actual position and the desired position of the traversing yam guide (3) a differential signal for controlling the stepping motor (7) and for moving the traversing yam guide (3) location-controlled over the entire traverse stroke.
  12. Traversing apparatus of claim 11, characterized in that there is a second traversing yarn guide (3.1, 3.2), that both traversing yam guides (3.1, 3.2) are each moved in opposite directions via a stepping motor (7.1, 7.2), the yarn (13) being transferred respectively in the stroke ends of the traverse stroke from the one traversing yam guide (3 .1; 3.2) to the other traversing yarn guide (3.2; 3.1), and that each traversing yam guide (3.1, 3.2) is associated with a measuring device (8.1, 8.2), which is connected to the control device of the stepping motor (7).
  13. Traversing apparatus of claim 12 for traversing a yarn (13) with two oppositely moved traversing yam guides (3.1, 3.2), which reciprocate the yarn (13) within a traverse stroke, with two stepping motors (7.1, 7.2) that are controllable independently of each other respectively by means of a control device (11.1, 11.2), which motors drive each one of the traversing yarn guides (3.1, 3.2), wherein the desired positions of the traversing yarn guides (3.1, 3.2) are determined by a respective setting of the stepping motor (7.1, 7.2), characterized in that each control device (11.1; 11.2) is connected to a respective measuring device (8) that determines the actual position of the traversing yam guide (3.1; 3.2).
  14. Traversing apparatus of one of claims 11-13, characterized in that a plurality of traversing yarn guides (3) are provided for traversing a plurality of yarns (13) in parallel arranged winding positions, that the traversing yam guides (3) moving in the same direction can be driven by a stepping motor (7), and that one of the traversing yarn guides (3) moving in the same direction is associated with the measuring device (8).
  15. Traversing apparatus of one of claims 11-14, characterized in the measuring device (8) for determining the actual position of the traversing yarn guide (3) includes a sensor (10), which is in contact with the traversing yarn guide (3).
  16. Traversing yam guide of one of claims 11-14, characterized in that the measuring device (8) includes a noncontacting sensor (10) for determining the actual position of the traversing yam guide (3).
  17. Traversing yarn guide of one of claims 11-16, characterized in that the measuring device (8) for determining the actual position of the traversing yarn guide (3) is connected to a drive means (4, 5, 6, 9) that drives the traversing yarn guide (3).
  18. Traversing apparatus of claim 17, characterized in that the drive means is a belt (6), which mounts the traversing yarn guide (3), and which is guided by at least one belt pulley (4) and a drive pulley (5) connected to the stepping motor (7).
  19. Traversing apparatus of claim 18, characterized in that a number of markings arranged per length unit on the belt (6) can be covered by the sensor (10) of the measuring device (8).
  20. Traversing apparatus of claim 18, characterized in that an angular position or a number of revolutions of the drive pulley (5) or belt pulley (4) can be determined by the sensor (10) of the measuring device (8).
  21. Traversing apparatus of claim 20, characterized in that the sensor (10) is arranged on the stepping motor (7) such as to be able to determine the angular position or the number of revolutions of the motor shaft (9) connected to the drive pulley (5).
EP98943765A 1997-07-26 1998-07-22 Process and cross-winding device for laying a thread Expired - Lifetime EP0999992B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19732222 1997-07-26
DE19732222 1997-07-26
PCT/EP1998/004581 WO1999005055A1 (en) 1997-07-26 1998-07-22 Process and cross-winding device for laying a thread

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EP0999992A1 EP0999992A1 (en) 2000-05-17
EP0999992B1 true EP0999992B1 (en) 2004-01-28

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EP98943765A Expired - Lifetime EP0999992B1 (en) 1997-07-26 1998-07-22 Process and cross-winding device for laying a thread

Country Status (8)

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US (1) US6405966B1 (en)
EP (1) EP0999992B1 (en)
JP (1) JP4155705B2 (en)
CN (1) CN1112313C (en)
DE (1) DE59810677D1 (en)
TR (1) TR200000187T2 (en)
TW (1) TW369506B (en)
WO (1) WO1999005055A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102008060788A1 (en) 2008-02-04 2009-08-06 Oerlikon Textile Gmbh & Co. Kg Thread spool winding method, involves winding thread with single side shortened lifting stroke for producing marking layer at one of set of front surfaces during cross winding of thread, where thread is guided in and out within stroke
DE102008056767A1 (en) 2008-11-11 2010-05-12 Oerlikon Textile Gmbh & Co. Kg Method for winding thread bobbin, involves feeding thread continuously to rotary driven winding carrier and coiled on thread bobbin, where thread is guided back and forth for forming coil winding along coil width of thread bobbin
DE102010031705B4 (en) * 2009-07-24 2021-06-24 Tmt Machinery, Inc. Control device for a traversing device
DE102013006626A1 (en) 2013-04-18 2014-10-23 Oerlikon Textile Gmbh & Co. Kg texturing
DE102013007254A1 (en) 2013-04-26 2014-10-30 Oerlikon Textile Gmbh & Co. Kg False twist
DE102020110580A1 (en) 2020-04-17 2021-10-21 Saurer Spinning Solutions Gmbh & Co. Kg Thread traversing device for a winding device of a textile machine producing cross-wound bobbins

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CN1112313C (en) 2003-06-25
JP2001510769A (en) 2001-08-07
TR200000187T2 (en) 2000-11-21
WO1999005055A1 (en) 1999-02-04
JP4155705B2 (en) 2008-09-24
CN1265077A (en) 2000-08-30
US6405966B1 (en) 2002-06-18
EP0999992A1 (en) 2000-05-17
DE59810677D1 (en) 2004-03-04
TW369506B (en) 1999-09-11

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