EP3038964B1 - Method for detecting a thread lap and device for guiding a thread - Google Patents
Method for detecting a thread lap and device for guiding a thread Download PDFInfo
- Publication number
- EP3038964B1 EP3038964B1 EP14755621.1A EP14755621A EP3038964B1 EP 3038964 B1 EP3038964 B1 EP 3038964B1 EP 14755621 A EP14755621 A EP 14755621A EP 3038964 B1 EP3038964 B1 EP 3038964B1
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- EP
- European Patent Office
- Prior art keywords
- thread
- electric motor
- motor
- godet jacket
- operating
- 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.)
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- 238000000034 method Methods 0.000 title claims description 31
- 238000012544 monitoring process Methods 0.000 claims description 21
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 34
- 239000004753 textile Substances 0.000 description 11
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
- B65H51/12—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements in spaced relation to provide a series of independent forwarding surfaces around which material is passed or wound
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/32—Supporting or driving arrangements for forwarding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
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- 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 recognizing a thread wrap on the circumference of a driven godet casing and to a delivery device for guiding a thread according to the preamble of claim 7.
- a generic method and a generic device are from the WO 2007/134732 known.
- the circumference of the godet casing is detected by a winding sensor, which is converted into a switching position by mechanical contact with a thread winding. Within the switch position, the winding sensor causes a direct interruption in the voltage supply to the electric motor, so that the godet jacket is stopped.
- the known method and the known delivery device therefore require additional aids in order on the one hand to recognize a thread winding and on the other hand to bring the godet casing to a stop.
- similar methods for monitoring undesired thread winding formation on a roller are also known from the prior art. For example, from the DE 10 2007 062 631 A1 a method and an apparatus are described in which a friction roller for driving a thread package is monitored in a winding device.
- the circumference of the roller is assigned a limiting means which, in the case of a thread winding on the circumference of the roller, produces stiffness and thus braking torque.
- This applied braking torque counteracts the drive torque of a motor of the friction roller, which is evaluated in a connected control unit to detect a thread winding.
- additional aids are required to recognize the thread winding formed on the circumference of the friction roller.
- JP 2002 154749 A and JP H07 118953 A a clamping delivery mechanism is known in each case, in which the thread is guided in a clamping gap between a shaft and a pressure roller.
- the invention is based on the knowledge that the delivery devices used to guide a thread in a textile machine each have a separate electric motor with a relatively small and therefore sensitive range of services.
- the thread guide on the godet casing largely determines the power output of the electric motor. Changes in the thread guidance can thus cause even small changes in the power consumption on the electric motor.
- the invention now provides that at least one physical operating parameter of the electric motor is continuously monitored, a current actual value of the operating parameter being compared with a stored threshold value of the operating parameter.
- the threshold of the operating parameter forms the unique identifier of a thread package formed on the circumference of the godet casing.
- a simple actual / target comparison can be used to identify a thread winding on the circumference of the driven godet casing based on the physical operating parameter of the electric motor.
- the actual value of the operating torque is determined from measured values of at least one motor parameter, in particular a motor current. It is known, for example, that changes in power in the power output have a direct effect on the motor current. In this respect, the measurement of the motor current is particularly advantageous for determining the actual values of the operating torque.
- the power output of the electric motor can advantageously be influenced by a development of the method in that a thread winding is produced on the thread winding a braking surface acting on the godet braking torque acts, which is formed at a distance from the godet by a stationary friction means. In this way, the change in the operating torque can be further favored.
- the method variant is preferably carried out, which generates an interference signal if the operating parameter falls below or exceeds the threshold value and switches off the electric motor automatically. This causes the godet casing to stop directly and, in addition, an operator can receive corresponding information via the interference signal.
- the electric motor for driving the godet casing is controlled in several operating modes, the operating modes being assigned separate monitoring algorithms with separate threshold values.
- different operating parameters or different threshold values or different evaluation principles can be used in order to be able to trigger the most appropriate action sequences.
- One of the operating modes for controlling the electric motor when a thread is placed on the godet casing is determined. This state occurs when the process is started and after every process interruption.
- the assigned monitoring algorithm assigns the threshold value to a time constant which determines a time period of the exceeding. This means that short-term threshold violations or threshold violations can be eliminated without an interfering signal or the electric motor being switched off.
- a second operating mode can thus be used to control the electric motor when guiding a thread on the circumference of the godet casing, the assigned monitoring algorithm detecting any undershoot or overshoot of the threshold value.
- the method according to the invention is therefore particularly suitable for being integrated into the drive of a godet casing.
- the delivery device is designed in such a way that the electric motor is formed by a brushless synchronous motor (BLDC motor) and control electronics, the control electronics being designed to recognize a thread winding formed on the godet jacket. Due to the control electronics directly coupled to the motor, the BLDC motors are particularly suitable for recognizing and evaluating a change in an operating parameter.
- BLDC motor brushless synchronous motor
- control electronics have at least one measuring device for monitoring an operating parameter of the electric motor and a storage device for storing a threshold value of the operating parameter.
- Such measuring means and storage means are also required to fulfill the electronic control of the engine according to the specifications.
- a current meter for measuring a motor current is preferably integrated in the control electronics as the measuring means for monitoring the operating parameter. This enables direct proportional signals to be determined which allow conclusions to be drawn about an operating torque.
- the godet jacket is associated with a short distance with a friction means which has a friction surface opposite the godet jacket.
- any mechanical components which are kept at a short distance from the godet casing are suitable as friction means.
- the friction means can preferably be carried out by a pin which is aligned essentially coaxially with the godet casing.
- control electronics are connected to a light-emitting diode and / or a machine control unit. So can be over the light emitting diode use visual signals to signal a fault to the outside of the textile machine.
- the control electronics are connected to a light-emitting diode and / or a machine control unit. So can be over the light emitting diode use visual signals to signal a fault to the outside of the textile machine.
- the delivery device according to the invention is particularly suitable for being operated in a compact arrangement even in stressed environments.
- the control electronics, the electric motor and the godet casing form a structural unit, the motor shaft being cantilevered in a bearing housing, the control electronics being encapsulated in an electrical housing and a motor mount for receiving a stator is held between the bearing housing and the electrical housing.
- several delivery devices can advantageously be arranged in a narrow division next to one another in a textile machine.
- the delivery device according to the invention offers a high degree of operational safety, since unwanted thread windings automatically by the electric motor recognized and lead to shutdown. Additional aids that detect the thread winding are not required.
- FIG. 1 An embodiment of the delivery device according to the invention is shown in a cross-sectional view.
- the delivery device has a cup-shaped godet casing 1, which is fastened in a rotationally fixed manner to a projecting free end of a motor shaft 3 of an electric motor 2.
- the electric motor 2 is designed as a brushless synchronous motor, which also as so-called BLDC motor is known.
- the BLDC motor 4 comprises the electric motor 2 and control electronics 5.
- the BLDC motor 4 is designed in several parts in this embodiment.
- the motor shaft 3 of the electric motor 2 is rotatably supported in a bearing housing 8 by a plurality of roller bearings 9.
- the motor shaft 3 has an end opposite the godet casing 1, on which a rotor 10 is arranged.
- the rotor 10 is formed by a permanent magnet, not described in more detail here.
- the rotor 10 is surrounded by a stator 11, which carries several windings.
- the stator 11 is held by a motor bracket 12.
- the motor mount 12 extends between the bearing housing 8 and an electrical housing 13 arranged directly on the electric motor 2.
- the electrical housing 13 contains the control electronics 5.
- control electronics 5 are symbolically represented by a circuit board 14 and a power module 15, an inverter 17 and a microprocessor 19.
- control electronics 5 has a measuring means 16, which is usually linked to the inverter 17.
- storage means 18 is provided which is coupled to the microprocessor 19.
- the control electronics 5 is coupled via a supply line 21 to a voltage source, not shown here.
- a second connection to the control electronics 5 is a data line 20, which enables data exchange with a higher-level machine control unit 22.
- the control electronics 5 are connected directly to a Light-emitting diode 23 coupled in order to be able to indicate possible operating states of the electric motor 2 by means of visual signals. For example, a fault can be signaled by a red signal and a normal operating state by a green signal on the LED 23.
- FIG. 2.1 and 2.2 is a view of the embodiment Fig. 1 shown when used in a textile machine.
- the Fig. 2.1 shows the delivery device in operation with a thread guide and in Fig. 2.2 the delivery device is shown in operation with formation of a thread package.
- the delivery device is in accordance with Fig. 1 held on a carrier 27.
- the godet casing 1 is held on a front side of the carrier 27 and the BLDC motor 4 on a rear side of the carrier 27.
- a rotatably mounted roller 28 is associated with the godet casing 1 at a distance.
- a friction means 24 is attached to the front of the carrier 27, which is held with a friction surface 26 at a short distance from the godet casing 1.
- the friction means 24 is formed by a pin 25 which is aligned coaxially with the godet casing 1 and extends essentially over the entire length of the godet casing 1.
- Fig. 2.1 the situation is shown in which a thread 29 with several wraps is guided on the circumference of the godet casing 1 and on the circumference of the roller 28.
- the godet jacket 1 is in this operating situation driven by the electric motor 2 at a substantially constant speed.
- the control of the electric motor 2 takes place via the control electronics 5, the setpoint speed of the control electronics 5 being given via the data input.
- the method according to the invention is now based on the fact that in this phase a physical operating parameter of the electric motor 2 is continuously monitored within the control electronics 5. For this purpose, an actual value of the operating parameter is compared with a stored threshold value of the operating parameter.
- the operating torque of the electric motor 2 is preferably recorded as the operating parameter. In principle, however, it is also possible to monitor the performance of the engine as an operating parameter.
- Fig. 3 the course of an actual value of the operating torque of the electric motor 2 is shown in a diagram in a time course.
- the time t is plotted on the abscissa and the operating torque M of the engine on the ordinate of the diagram.
- the actual value of the operating torque remains essentially constant except for a few small fluctuations.
- the actual value is in Fig. 3 marked with the reference symbol M I. Since the threshold value represents a maximum torque load of the electric motor when monitoring the operating torque of the electric motor 2, the threshold value is to be regarded as an upper limit value and in Fig. 3 with the reference symbol M S marked.
- the threshold value M S forms a parallel to the abscissa and is constant.
- any change in the tension effect of the thread on the godet casing 1 leads to a change in the physical parameter of the electric motor 2.
- a thread winder 30 on the circumference of the godet casing 1 is produced by winding up an incoming thread 29.
- the thread winding 30 could alternatively be created by a thread that has already run off, so that a returning thread is guided to the thread winding 30.
- a motor current is measured as a motor parameter for determining the actual value of the operating torque.
- the measuring means 16 within the control electronics 5 are used.
- other motor parameters such as, for example, the motor voltage can also be used to adjust the operating parameters of the electric motor 2 determine.
- the actual value of the operating torque is continuously compared with a threshold value of the operating torque.
- the threshold value is stored in the storage means 18 of the control electronics 5.
- the actual value M I of the operating torque increases in the event of a winding and exceeds the threshold value M S at time t 1 .
- the control electronics 5 stop the electric motor 2 immediately.
- a fault signal is transmitted to the machine control unit 22, so that the failure can be displayed to an operator.
- the friction means 24 with a friction surface 26 is assigned to the godet casing 1 in order to amplify the signal in such a way that after the thread winding has grown on the latter
- the friction surface 26 of the friction means 24 grinds. This frictional contact between the thread winding 30 and the stationary friction means 24 is transmitted directly to the electric motor 2 and leads to a disproportionate increase in the actual value of the operating torque.
- an increase in the thread winding 30 can advantageously be limited if the change in the operating torque due to the thread winding is insufficient.
- the thread package 30 is removed and the process is restarted.
- the thread is re-threaded by an operator and placed on the circumference of the godet casing 1 and the roller 28.
- the operator undesirably generates higher loads on the godet casing 1, which lead to an undesired increase in the operating torque of the electric motor 2.
- immediate switching off and stopping of the electric motor is not desired. It is therefore provided to monitor the operating torque in the different operating modes according to different monitoring algorithms.
- Each operating mode is assigned one of several monitoring algorithms, which are usually stored in the microprocessor 19 of the control electronics 5.
- Fig. 4 the course of an actual value of the operating torque of the electric motor 2 is shown during several operating modes.
- the time t is entered on the abscissa and the operating torque M on the ordinate.
- the actual value of the operating torque M I will increase continuously until an operating torque desired for guiding the thread is reached.
- the operator causes a disproportionate increase in the operating torque on the electric motor 2.
- the actual value of the operating torque which is continuously determined via the motor current measurement, is compared with a threshold value M S2 .
- the threshold value M S2 represents a maximum load on the electric motor 2.
- the speed is reduced via the control electronics 5 to reduce the operating torque. The operating torque is monitored regardless of the speed change.
- a duration of the exceedance is determined in this phase.
- the exceeding is ended at time t 2 .
- the time period results from the difference between the times t 2 - t 1 .
- the time difference determined from this also forms a monitoring criterion.
- the electronic motor 2 is switched off via the control electronics 5.
- the time difference was smaller than the predetermined critical period of time, so that in the case of Fig. 4 illustrated embodiment, the electric motor 2 was not switched off.
- the thread detection function is tailored to the needs of manual thread feeding. The method according to the invention is therefore particularly suitable for manually operated delivery devices.
- the threshold value M S1 is smaller than the threshold value M S2 which is relevant for the application of the thread.
- the threshold value M S1 is selected in such a way that the load fluctuations of the electric motor 2 which occur during thread guidance each produce actual values of the operating parameter which are below the threshold value.
- the threshold value can only be exceeded in the event that there is a major change in the actual value of the operating parameter due to a thread winding.
- this situation is shown at time t 3 .
- time t 3 there is a thread winding on the circumference of the godet winding 1 and the electric motor 2 is stopped again.
- the method according to the invention and the delivery device according to the invention are directly related in order to ensure reliable thread guidance within a processing point within a textile machine.
- the invention is particularly suitable for executing thread guides in textile machines with simultaneous thread winding monitoring.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Quality & Reliability (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Control Of Electric Motors In General (AREA)
- Manufacture Of Motors, Generators (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Erkennen eines Fadenwickels am Umfang eines angetriebenen Galettenmantels gemäß dem Oberbegriff des Anspruchs 1 sowie eine Liefervorrichtung zum Führen eines Fadens gemäß dem Oberbegriff des Anspruchs 7.The invention relates to a method for recognizing a thread wrap on the circumference of a driven godet casing and to a delivery device for guiding a thread according to the preamble of claim 7.
Ein gattungsgemäßes Verfahren sowie eine gattungsgemäße Vorrichtung sind aus der
Bei der Herstellung und Behandlung von Fäden ist es allgemein bekannt, dass zum Führen, Fördern oder Verstrecken die Fäden am Umfang rotiertender Galettenmäntel mit einer oder mehreren Teilumschlingungen geführt sind. Derartige Vorrichtungen, die in der Fachwelt auch als Lieferwerke oder Galetten bezeichnet werden, gewährleisten den Transport des Fadens innerhalb einer Textilmaschine. So wird z.B. zum Verstrecken und Texturieren ein unbehandelter Faden als eine Vorlagespule bereitgestellt und innerhalb der Textilmaschine durch mehrere innerhalb einer Bearbeitungsstation hintereinander angeordneter Liefervorrichtungen geführt. Innerhalb der Bearbeitungsstation wird der Faden verstreckt und texturiert und anschließend zu einer Spule aufgewickelt. In derartigen Prozessen besteht nun die Gefahr, dass z.B. bei Spulenwechseln eine Verschlappung oder eine Fehlübergabe oder sogar ein Fadenbruch entsteht. Derartige Änderungen der Fadenzugspannung innerhalb der Führungskette kann jedoch zu ungewünschten Fadenwickeln an den angetriebenen Galettenmäntel der Liefervorrichtungen führen. Um möglichst kurze Unterbrechungszeiten zu realisieren, sind derartige Fadenwickel möglichst schnell zu erkennen und zu beseitigen.In the manufacture and treatment of threads, it is generally known that the threads are guided with one or more partial wraps around the circumference of rotating godet shells for guiding, conveying or stretching. Devices of this type, which are also referred to in the technical field as delivery plants or godets, ensure the transport of the thread within a textile machine. For example, an untreated thread is provided as a supply spool for drawing and texturing and is guided within the textile machine by several delivery devices arranged one behind the other within a processing station. The thread is drawn and textured within the processing station and then wound into a bobbin. In such processes, there is now a risk that, for example, when bobbins are changed, they will sag or be transferred incorrectly or even break the thread. Such changes in thread tension within the guide chain can, however, be undesirable Guide thread winding on the driven godet shells of the delivery devices. In order to achieve the shortest possible interruption times, such thread packages can be recognized and eliminated as quickly as possible.
Bei dem bekannten Verfahren wird der Umfang des Galettenmantels durch einen Wickelfühler detektiert, der durch mechanische Berührung mit einem Fadenwickel in eine Schaltstellung überführt wird. Innerhalb der Schaltstellung verursacht der Wickelfühler eine direkte Unterbrechung der Spannungsversorgung des Elektromotors, so dass der Galettenmantel gestoppt wird. Das bekannte Verfahren sowie die bekannte Liefervorrichtung erfordern somit zusätzliche Hilfsmittel, um einerseits einen Fadenwickel zu erkennen und andererseits ein Stillsetzen des Galettenmantels zu bewirken. Aus dem Stand der Technik sind jedoch auch ähnliche Verfahren zur Überwachung einer unerwünschten Fadenwickelbildung an einer Walze bekannt. So ist beispielsweise aus der
Aus
Es ist daher Aufgabe der Erfindung, ein Verfahren zum Erkennen eines Fadenwickels der gattungsgemäßen Art sowie eine Liefervorrichtung zum Führen eines Fadens derart weiterzubilden, dass eine am Umfang des Galettenmantels gebildeter Fadenwickel ohne zusätzliche Hilfsmittel identifizierbar ist.It is therefore an object of the invention to develop a method for recognizing a thread package of the generic type and a delivery device for guiding a thread in such a way that a thread package formed on the circumference of the godet casing can be identified without additional aids.
Diese Aufgabe wird erfindungsgemäß mit einem Verfahren gemäß Anspruch 1 sowie mit einer Liefervorrichtung gemäß Anspruch 7 gelöst.This object is achieved with a method according to
Vorteilhafte Weiterbildungen der Erfindung sind durch die Merkmale und Merkmalskombinationen der jeweiligen Unteransprüche definiert.Advantageous developments of the invention are defined by the features and combinations of features of the respective subclaims.
Die Erfindung beruht auf der Erkenntnis, dass die in einer Textilmaschine verwendeten Liefervorrichtungen zum Führen eines Fadens jeweils einen separaten Elektromotor mit relativ geringen und daher feinfühligem Leistungssprektrum aufweisen. Die Fadenführung an dem Galettenmantel bestimmt dabei maßgeblich die Leistungsabgabe des Elektromotors. Somit können Änderungen in der Fadenführung bereits geringer Änderungen der Leistungsabnahme an dem Elektromotor bewirken. Aus dieser Erkenntnis heraus sieht die Erfindung nun vor, dass zumindest ein physikalischer Betriebsparameter des Elektromotors fortlaufend überwacht wird, wobei ein momentaner Ist-Wert des Betriebsparameters mit einem gespeicherten Schwellwert des Betriebsparameters abgeglichen wird. Der Schwellwert des Betriebsparameters bildet dabei das eindeutige Erkennungszeichen eines am Umfang des Galettenmantels gebildeten Fadenwickels. So lässt sich durch einen einfachen Ist-Soll-Vergleich anhand des physikalischen Betriebsparameters des Elektromotors ein Fadenwickel am Umfang des angetriebenen Galettenmantels identifizieren.The invention is based on the knowledge that the delivery devices used to guide a thread in a textile machine each have a separate electric motor with a relatively small and therefore sensitive range of services. The thread guide on the godet casing largely determines the power output of the electric motor. Changes in the thread guidance can thus cause even small changes in the power consumption on the electric motor. Based on this knowledge, the invention now provides that at least one physical operating parameter of the electric motor is continuously monitored, a current actual value of the operating parameter being compared with a stored threshold value of the operating parameter. The threshold of the operating parameter forms the unique identifier of a thread package formed on the circumference of the godet casing. A simple actual / target comparison can be used to identify a thread winding on the circumference of the driven godet casing based on the physical operating parameter of the electric motor.
Da eine Liefervorrichtung maßgeblich die Fadenzugspannung beeinflusst, die im Wesentlichen durch ein Betriebsdrehmoment des Elektromotors zu erzeugen ist, stellt sich die Weiterbildung der erfindungsgemäßen Verfahrens als besonders vorteilhaft heraus, bei welchem ein Betriebsdrehmoment des Elektromotors als physikalischer Betriebsparameter überwacht wird. So können unmittelbar die Ist-Werte des Betriebsdrehmoments proportional zu den am Galettenmantel wirkenden Fadenzugkräfte gesehen werden.Since a delivery device significantly influences the thread tension, which is to be generated essentially by an operating torque of the electric motor, the development of the method according to the invention turns out to be particularly advantageous, in which an operating torque of the electric motor is monitored as a physical operating parameter. The actual values of the operating torque can be seen directly in proportion to the thread tension forces acting on the godet jacket.
Um eine fortlaufende Überwachung des Betriebsdrehmomentes zu ermöglichen, ist vorgesehen, dass der Ist-Wert des Betriebsdrehmomentes aus Messwerten zumindest einer Motorkenngröße insbesondere einem Motorstrom ermittelt wird. So ist bekannt, dass sich Leistungsänderungen in der Abgabe der Leistung direkt auf den Motorstrom auswirken. Insoweit ist die Messung des Motorstromes zur Ermittlung der Ist-Werte des Betriebsdrehmoments besonders vorteilhaft.In order to enable continuous monitoring of the operating torque, it is provided that the actual value of the operating torque is determined from measured values of at least one motor parameter, in particular a motor current. It is known, for example, that changes in power in the power output have a direct effect on the motor current. In this respect, the measurement of the motor current is particularly advantageous for determining the actual values of the operating torque.
Damit auch bei möglichst spannungsarm geführten Fäden am Umfang des Galettenmantels ein Fadenwickel identifizierbar ist, lässt sich durch eine Weiterbildung des Verfahrens die Leistungsabgabe des Elektromotors vorteilhaft dadurch beeinflussen, dass an dem Fadenwickel zur Erzeugung eines auf den Galettenmantel einwirkenden Bremsmomentes eine Reibfläche wirkt, die im Abstand zum Galettenmantel durch ein stationäres Reibmittel gebildet wird. So lässt sich die Veränderung des Betriebsdrehmomentes weiter begünstigen.So that a thread winding can be identified on the circumference of the godet casing even with threads that are guided with as little tension as possible, the power output of the electric motor can advantageously be influenced by a development of the method in that a thread winding is produced on the thread winding a braking surface acting on the godet braking torque acts, which is formed at a distance from the godet by a stationary friction means. In this way, the change in the operating torque can be further favored.
Zur Realisierung sehr kurzer Unterbrechungszeiten wird die Verfahrensvariante bevorzugt ausgeführt, die bei einer unzulässigen Unter- oder Überschreitung des Schwellenwertes des Betriebsparameters ein Störsignal erzeugt und der Elektromotor selbsttätig abschaltet. So wird ein direktes Anhalten des Galettenmantels ausgelöst und zudem kann über das Störsignal ein Operator entsprechende Informationen erhalten.In order to implement very short interruption times, the method variant is preferably carried out, which generates an interference signal if the operating parameter falls below or exceeds the threshold value and switches off the electric motor automatically. This causes the godet casing to stop directly and, in addition, an operator can receive corresponding information via the interference signal.
Da in den textilen Prozessen derartige Liefervorrichtungen in unterschiedlichen Betriebszuständen agieren müssen, wird erfindungsgemäß der Elektromotor zum Antreiben des Galettenmantels in mehreren Betriebsarten gesteuert, wobei den Betriebsarten separate Überwachungsalgorithmen mit separaten Schwellwertvorgaben zugeordnet sind. So können je nach Forderung und Betriebszustand der Liefervorrichtung unterschiedliche Betriebsparameter oder unterschiedliche Schwellwerte oder unterschiedliche Auswerteprinzipien genutzt werden, um möglichst angepasste Handlungsfolgen auslösen zu können.Since delivery devices of this type have to operate in different operating states in the textile processes, according to the invention the electric motor for driving the godet casing is controlled in several operating modes, the operating modes being assigned separate monitoring algorithms with separate threshold values. Depending on the requirements and the operating state of the delivery device, different operating parameters or different threshold values or different evaluation principles can be used in order to be able to trigger the most appropriate action sequences.
So ist eine der Betriebsarten zur Steuerung des Elektromotors beim Anlegen eines Fadens an den Galettenmantel bestimmt. Dieser Zustand tritt bei einem Prozessstart und nach jeder Prozessunterbrechung auf.One of the operating modes for controlling the electric motor when a thread is placed on the godet casing is determined. This state occurs when the process is started and after every process interruption.
In diesen Fällen wird überlicherweise ein Faden manuell durch den Operator in die Liefervorrichtung angelegt, so dass ungewollt Änderungen des Betriebsdrehmomentes des Elektromotors auftreten können. Insoweit ist vorgesehen, dass der zugeordnete Überwachungsalgorithmus den Schwellenwert eine Zeitkonstante zuweist, die eine Zeitdauer der Überschreitung bestimmt. Somit können kurzzeitige Schwellwertüberschreitungen oder Schwellwertunterschreitungen eliminiert werden, ohne dass ein Störsignal oder ein Abschalten des Elektromotors erfolgt.In these cases, a thread is usually manually put into the delivery device by the operator, so that unwanted changes in the operating torque of the electric motor can occur. To this extent, it is provided that the assigned monitoring algorithm assigns the threshold value to a time constant which determines a time period of the exceeding. This means that short-term threshold violations or threshold violations can be eliminated without an interfering signal or the electric motor being switched off.
Eine zweite Betriebsart lässt sich somit zur Steuerung des Elektromotors beim Führen eines Fadens am Umfang der Galettenmantels nutzen, wobei der zugeordnete Überwachungsalgorithmus jede Unter- oder Überschreitung des Schwellwertes detektiert.A second operating mode can thus be used to control the electric motor when guiding a thread on the circumference of the godet casing, the assigned monitoring algorithm detecting any undershoot or overshoot of the threshold value.
Das erfindungsgemäße Verfahren ist somit besonders geeignet, in den Antrieb eines Galettenmantels integriert zu werden.The method according to the invention is therefore particularly suitable for being integrated into the drive of a godet casing.
Die erfindungsgemäße Liefervorrichtung ist hierzu derart ausgebildet, dass der Elektromotor durch einen bürstenlosen Synchronmotor (BLDC-Motor) und einer Steuerelektronik gebildet ist, wobei die Steuerelektronik derart ausgelegt ist, um einen am Galettenmantel gebildeten Fadenwickel zu erkennen. Durch die unmittelbar mit dem Motor gekoppelte Steuerelektronik sind die BLDC-Motoren besonders geeignet, um eine Veränderung eines Betriebsparameters zu erkennen und auszuwerten.For this purpose, the delivery device according to the invention is designed in such a way that the electric motor is formed by a brushless synchronous motor (BLDC motor) and control electronics, the control electronics being designed to recognize a thread winding formed on the godet jacket. Due to the control electronics directly coupled to the motor, the BLDC motors are particularly suitable for recognizing and evaluating a change in an operating parameter.
Hierzu weist die Steuerelektronik zumindest ein Messmittel zur Überwachung eines Betriebsparameters des Elektromotors und ein Speichermittel zum Speichern eines Schwellwertes des Betriebsparameters auf. Derartige Messmittel und Speichermittel sind zudem erforderlich, um die elektronische Steuerung des Motors entsprechend den Vorgaben zu erfüllen.For this purpose, the control electronics have at least one measuring device for monitoring an operating parameter of the electric motor and a storage device for storing a threshold value of the operating parameter. Such measuring means and storage means are also required to fulfill the electronic control of the engine according to the specifications.
Als Messmittel zur Überwachung des Betriebsparameters wird vorzugsweise ein Strommesser zur Messung eines Motorstromes in der Steuerelektronik integriert. Damit können direkt proportionale Signale ermittelt werden, die Rückschlüsse auf ein Betriebsdrehmoment erlauben.A current meter for measuring a motor current is preferably integrated in the control electronics as the measuring means for monitoring the operating parameter. This enables direct proportional signals to be determined which allow conclusions to be drawn about an operating torque.
Zur Signalverstärkung eines am Umfang des Galettenmantels geführten Fadenwickels ist desweiteren vorgesehen, dass dem Galettenmantel mit einem kurzen Abstand ein Reibmittel zugeordnet ist, welches gegenüberliegend zum Galettenmantel eine Reibfläche aufweist.For signal amplification of a thread roll guided on the circumference of the godet jacket, it is further provided that the godet jacket is associated with a short distance with a friction means which has a friction surface opposite the godet jacket.
Als Reibmittel sind beliebige mechanische Komponenten geeignet, die in einem geringen Abstand zu dem Galettenmantel gehalten werden. Bevorzugt lässt sich das Reibmittel jedoch durch einen Stift ausführen, der im Wesentlichen koaxial zu dem Galettenmantel ausgerichtet ist.Any mechanical components which are kept at a short distance from the godet casing are suitable as friction means. However, the friction means can preferably be carried out by a pin which is aligned essentially coaxially with the godet casing.
Um nach Erkennen eines Fadenwickels und nach Abschalten des Elektromotors Folgehandlungen durch einen Operator schnell auslösen zu können, ist gemäß einer vorteilhaften Weiterbildung der erfindungsgemäßen Liefervorrichtung vorgesehen, dass die Steuerelektronik mit einer Leuchtdiode und / oder einer Maschinensteuereinheit verbunden ist. So lassen sich über die Leuchtdiode visuelle Signale nutzen, um nach außen hin an der Textilmaschine eine Störung zu signalisieren. Alternativ oder ergänzend besteht jedoch auch die Möglichkeit, die Störmeldung direkt einer Maschinensteuereinheit aufzugeben, um entsprechende benachbarte Prozessaggregate und Liefervorrichtungen steuern zu können.In order to be able to quickly trigger subsequent actions by an operator after detection of a thread winding and after the electric motor has been switched off, it is provided according to an advantageous development of the delivery device according to the invention that the control electronics are connected to a light-emitting diode and / or a machine control unit. So can be over the light emitting diode use visual signals to signal a fault to the outside of the textile machine. As an alternative or in addition, however, there is also the possibility of giving the fault message directly to a machine control unit in order to be able to control corresponding adjacent process units and delivery devices.
Die erfindungsgemäße Liefervorrichtung ist besonders geeignet, um in einer kompakten Anordnung auch in belasteten Umgebungen betrieben zu werden. So ist gemäß einer vorteilhaften Weiterbildung der erfindungsgemäßen Liefervorrichtung vorgesehen, dass die Steuerelektronik, der Elektromotor und der Galettenmantel eine Baueinheit bilden, wobei die Motorwelle auskragend in einem Lagergehäuse gelagert ist, wobei die Steuerelektronik in einem Elektrogehäuse gekapselt ist und wobei ein Motorträger zur Aufnahme eines Stators zwischen den Lagergehäusen und dem Elektrogehäuse gehalten ist. In derartiger kompakter Ausbildung können vorteilhaft mehrere Liefervorrichtungen in enger Teilung nebeneinander in einer Textilmaschine angeordnet werden.The delivery device according to the invention is particularly suitable for being operated in a compact arrangement even in stressed environments. According to an advantageous development of the delivery device according to the invention, it is provided that the control electronics, the electric motor and the godet casing form a structural unit, the motor shaft being cantilevered in a bearing housing, the control electronics being encapsulated in an electrical housing and a motor mount for receiving a stator is held between the bearing housing and the electrical housing. In such a compact design, several delivery devices can advantageously be arranged in a narrow division next to one another in a textile machine.
Zur Führung eines Fadens wird dieser mit mehreren Teilumschlingungen am Umfang des Galettenmantels geführt, so dass der Galettenmantel gemeinsam mit einer drehbaren Rolle zum Führen eines Fadens in mehreren Umschlingungen zusammenwirkt.To guide a thread, it is guided with several partial wraps on the circumference of the godet casing, so that the godet casing interacts with a rotatable roller for guiding a thread in several wraps.
Die erfindungsgemäße Liefervorrichtung bietet ein hohes Maß an Betriebssicherheit, da ungewünschte Fadenwickel von dem Elektromotor selbsttätig erkannt und zum Abschalten führen. Zusätzliche Hilfsmittel, die eine Erkennung des Fadenwickels ausführen, sind nicht erforderlich.The delivery device according to the invention offers a high degree of operational safety, since unwanted thread windings automatically by the electric motor recognized and lead to shutdown. Additional aids that detect the thread winding are not required.
Die Erfindung wird nachfolgend anhand einiger Ausführungsbeispiele der erfindungsgemäßen Vorrichtung unter Bezug auf die beigefügten Figuren näher erläutert.The invention is explained in more detail below on the basis of some exemplary embodiments of the device according to the invention with reference to the attached figures.
Es stellen dar:
- Fig. 1
- schematisch eine Querschnittsansicht eines Ausführungsbeispiels der erfindungsgemäßen Liefervorrichtung
- Fig. 2
- schematisch eine Seitenansicht des Ausführungsbeispiels aus
Fig. 1 in unterschiedlichen Betriebssituationen in einer Textilmaschine - Fig. 3
- schematisch eine Darstellung eines zeitlichen Verlaufes eines Betriebsparameters des Elektromotors
- Fig. 4
- schematisch ein zeitlicher Verlauf eines Betriebsparameters eines Elektromotors in verschiedenen Betriebsarten
- Fig. 1
- schematically a cross-sectional view of an embodiment of the delivery device according to the invention
- Fig. 2
- schematically shows a side view of the embodiment
Fig. 1 in different operating situations in a textile machine - Fig. 3
- schematically a representation of a time course of an operating parameter of the electric motor
- Fig. 4
- schematically shows a time course of an operating parameter of an electric motor in different operating modes
In
Der BLDC-Motor 4 ist in diesem Ausführungsbeispiel mehrteilig ausgeführt. Die Motorwelle 3 des Elektromotors 2 ist in einem Lagergehäuse 8 durch mehrere Wälzlager 9 drehbar gelagert. Die Motorwelle 3 weist ein zum Galettenmantel 1 gegenüberliegendes Ende auf, an dem ein Rotor 10 angeordnet ist. Der Rotor 10 wird durch einen hier nicht näher beschriebenen Permanentmagenten gebildet. Der Rotor 10 ist von einem Stator 11 umgeben, der mehrere Wicklungen trägt. Der Stator 11 ist durch einen Motorträger 12 gehalten. Der Motorträger 12 erstreckt sich zwischen dem Lagergehäuse 8 und einem unmittelbar an dem Elektromotor 2 angeordneten Elektrogehäuse 13. Das Elektrogehäuse 13 enthält die Steuerelektronik 5.The
Die Steuerelektronik 5 ist in diesem Ausführungsbeispiel symbolisch durch eine Platine 14 sowie einem Leistungsmodul 15, einem Wechselrichter 17 und einem Mikroprozessor 19 dargestellt. Insbesondere weist die Steuerelektronik 5 ein Messmittel 16 auf, das üblicherweise mit dem Wechselrichter 17 verknüpft ist. Desweiteren ist ein Speichermittel 18 vorgesehen, das mit dem Mikroprozessor 19 gekoppelt ist.In this exemplary embodiment, the
Die Steuerelektronik 5 ist über eine Versorgungsleitung 21 mit einer hier nicht dargestellten Spannungsquelle gekoppelt. Eine zweite Verbindung zur Steuerelektronik 5 stellt eine Datenleitung 20 dar, die einen Datenaustausch mit einer übergeordneten Maschinensteuereinheit 22 ermöglicht. Zusätzlich ist in diesem Ausführungsbeispiel die Steuerelektronik 5 direkt mit einer Leuchtdiode 23 gekoppelt, um mögliche Betriebszustände des Elektromotors 2 durch visuelle Signale anzeigen zu können. So lässt sich eine Störung beispielsweise durch ein rotes Signal und ein normaler Betriebszustand durch ein grünes Signal an der Leuchtdiode 23 signalisieren.The
Die Funktion der in der
Innerhalb der Textilmaschine wird die Liefervorrichtung gemäß
In
Das erfindungsgemäße Verfahren basiert nun darauf, dass in dieser Phase ein physikalischer Betriebparameter des Elektromotors 2 innerhalb der Steuerelektronik 5 fortlaufend überwacht wird. Hierzu wird ein Ist-Wert des Betriebsparameters mit einem gespeicherten Schwellwert des Betriebsparameters abgeglichen. Als Betriebsparameter wird vorzugsweise das Betriebsdrehmoment des Elektromotors 2 erfasst. Grundsätzlich besteht jedoch auch die Möglichkeit als Betriebsparameter die Leistung des Motors zu überwachen.The method according to the invention is now based on the fact that in this phase a physical operating parameter of the
In der
Für den Fall, dass aufgrund eines Fadenbruches vor oder hinter der Liefervorrichtung oder einer Verschlappung vor oder hinter der Liefervorrichtung sich am Umfang des Galettenmantels 1 ein Fadenwickel bildet, führt jede am Galettenmantel 1 veränderte Zugwirkung des Fadens zu einer Veränderung des physikalischen Parameters des Elektromotors 2. In der
Unabhängig von der Art und Entstehung des Fadenwickels 30 am Umfang des Galettenmantels 1 wird jede sich im Ist-Wert des Betriebsparameters bzw. im Ist-Wert des Betriebsdrehmomentes auswirkende Änderung erfasst. Hierbei kommt es üblicherweise zum Anstieg der Lastabnahme am Elektromotor 2, so dass sich höhere Ist-Werte des Betriebsdrehmomentes einstellen.Irrespective of the type and origin of the thread winding 30 on the circumference of the
Zur Bestimmung des Ist-Wertes des Betriebsdrehmomentes wird in diesem Ausführungsbeispiel ein Motorstrom als Motorkenngröße gemessen. Hierzu dient das Messmittel 16 innerhalb der Steuerelektronik 5. Grundsätzlich können jedoch auch andere Motorkenngrößen wie beispielsweise die Motorspannung genutzt werden, um Betriebsparameter des Elektromotors 2 zu bestimmen. Der Ist-Wert des Betriebsdrehmomentes wird fortlaufend mit einem Schwellwert des Betriebsdrehmomentes verglichen. Der Schwellwert ist im Speichermittel 18 der Steuerelektronik 5 hinterlegt.In this exemplary embodiment, a motor current is measured as a motor parameter for determining the actual value of the operating torque. For this purpose, the measuring means 16 within the
Wie in
Für den Fall, dass der am Umfang des Galettenmantels 1 gewickelte Fadenwickel 30 keine ausreichende Veränderung des Ist-Wertes des Betriebsdrehmomentes erzeugt, ist zur Signalverstärkung dem Galettenmantel 1 das Reibmittel 24 mit einer Reibfläche 26 derart zugeordnet, dass nach einem Anwachsen des Fadenwickels dieser an der Reibfläche 26 des Reibmittels 24 schleift. Dieser Reibkontakt zwischen dem Fadenwickel 30 und dem stationären Reibmittel 24 überträgt sich unmittelbar auf den Elektromotor 2 und führt zu einem überproportionalen Anstieg des Ist-Wertes des Betriebsdrehmomentes. Somit lässt sich ein Anwachsen des Fadenwickels 30 vorteilhaft begrenzen, falls die Änderung des Betriebsdrehmomentes aufgrund des Fadenwickels unzureichend ist.In the event that the thread winding 30 wound on the circumference of the
Nachdem ein Fadenwickel 30 erkannt und der Elektromotor angehalten ist, wird der Fadenwickel 30 entfernt und der Prozess neu gestartet. Hierzu wird der Faden durch einen Operator erneut eingefädelt und am Umfang des Galettenmantels 1 und der Rolle 28 angelegt. In diesem Betriebszustand besteht die Möglichkeit, dass der Operator ungewollt höhere Belastungen an dem Galettenmantel 1 erzeugt, die zu einer ungewünschten Überhöhung des Betriebsdrehmomentes des Elektromotors 2 führen. In dieser Phase ist jedoch ein sofortiges Abschalten und Stillsetzen des Elektromotors nicht gewünscht. Daher ist vorgesehen, die Überwachung des Betriebsdrehmomentes bei den verschiedenen Betriebsarten nach unterschiedlichen Überwachungsalgorithmen durchzuführen. So wird in diesem Ausführungsbeispiel zwischen einer ersten Betriebsart, die die Steuerung des Elektromotors beim Anlegen eines Fadens an den Galettenmantel bestimmt, und einer zweiten Betiebsart, die die Steuerung des Elektromotors beim Führen eines Fadens am Umfang des Galettenmantels bestimmt, unterschieden. Jede Betriebsart ist eine von mehreren Überwachungsalgorithmen zugewiesen, die üblicherweise in dem Mikroprozessor 19 der Steuerelektronik 5 hinterlegt sind.After a
Zur Erläuterung der Überwachungsalgorithmen wird auf die Darstellung in
Beim Anlegen eines Fadens am Umfang des Galettenmantels 1 wird der Ist-Wert des Betriebsdrehmomentes MI kontinuierlich ansteigen, bis ein zur Führung des Fadens gewünschtes Betriebsdrehmoment erreicht ist. In diesem gezeigten Ausführungsbeispiel gemäß
Sobald der Anlegevorgang an der Liefervorrichtung beendet ist und der Ist-Wert des Betriebsparameters seinen Normalwert, der den Betriebszustand zum Führen eines Fadens bestimmt, erreicht, wird die Betriebsart der Steuerung des Elektromotors umgestellt und der zuvor bereits nach
Das erfindungsgemäße Verfahren und die erfindungsgemäße Liefervorrichtung stehen in unmittelbarem Zusammenhang, um innerhalb einer Bearbeitungsstelle innerhalb einer Textilmaschine eine sichere Fadenführung zu gewährleisten. Insoweit ist die Erfindung besonders geeignet, um Fadenführungen in Textilmaschinen mit gleichzeitiger Fadenwickelüberwachung auszuführen.The method according to the invention and the delivery device according to the invention are directly related in order to ensure reliable thread guidance within a processing point within a textile machine. In this respect, the invention is particularly suitable for executing thread guides in textile machines with simultaneous thread winding monitoring.
- 11
- GalettenmantelGodet jacket
- 22nd
- ElektromotorElectric motor
- 33rd
- MotorwelleMotor shaft
- 44th
- BLDC-MotorBLDC motor
- 55
- SteuerelektronikControl electronics
- 88th
- LagergehäuseBearing housing
- 99
- Wälzlagerroller bearing
- 1010th
- Rotorrotor
- 1111
- Statorstator
- 1212th
- MotorträgerEngine mount
- 1313
- ElektrogehäuseElectrical housing
- 1414
- Platinecircuit board
- 1515
- LeistungsmodulPower module
- 1616
- MessmittelMeasuring equipment
- 1717th
- WechselrichterInverter
- 1818th
- SpeichermittelStorage means
- 1919th
- Mikroprozessormicroprocessor
- 2020
- DatenleitungData line
- 2121st
- Versorgungsleitungsupply line
- 2222
- MaschinensteuereinheitMachine control unit
- 2323
- Leuchtdiodelight emitting diode
- 2424th
- ReibmittelAbrasive
- 2525th
- Stiftpen
- 2626
- ReibflächeFriction surface
- 2727
- Trägercarrier
- 2828
- Rollerole
- 2929
- Fadenthread
- 3030th
- FadenwickelThread wrap
Claims (12)
- Method for detecting a thread lap (30) on the circumference of a driven godet jacket (1) of a supplying device, in which the godet jacket (1) is driven by a motor shaft (3) of an electric motor (2), wherein the godet jacket (1) interacts jointly with a rotatably mounted roller (28) to guide a thread (29) in multiple wraps, characterized in that
a physical operating parameter of the electric motor (2) is monitored continuously, an instantaneous actual value of the operating parameter being compared with a stored threshold value of the operating parameter,
in that the electric motor (2) for driving the godet jacket (1) is controlled in multiple operating modes, the operating modes being assigned separate monitoring algorithms with separate threshold value predefinitions, and
in that one of the operating modes determines the control of the electric motor (2) when laying a thread (29) on the godet jacket (1), the associated monitoring algorithm allocating the threshold value a critical time period for the undershoot or overshoot. - Method according to Claim 1,
characterized in that
an operating torque of the electric motor (2) is monitored as a physical operating parameter. - Method according to Claim 2,
characterized in that
the actual value of the operating torque is determined from measured values of at least one motor characteristic variable, in particular a motor current. - Method according to one of Claims 1 to 3,
characterized in that
in order to produce a braking moment acting on the godet jacket (1), a frictional surface (26) which is formed by a stationary frictional means (24) at a distance from the godet jacket (1) acts on the thread lap (30). - Method according to one of Claims 1 to 4,
characterized in that
in the event of the operating parameter impermissibly undershooting or overshooting the threshold value, a fault signal is generated and/or the electric motor (2) is shut down automatically. - Method according to Claim 1,
characterized in that
one of the operating modes determines the control of the electric motor (2) when guiding a thread (29) on the circumference of the godet jacket (1). - Supplying device for guiding a thread (29), comprising an electric motor (2) and comprising a godet jacket (1) co-rotationally arranged on a motor shaft (3), wherein the godet jacket (1) interacts jointly with a rotatably mounted roller (28) to guide a thread (29) in multiple wraps, characterized in that the electric motor (2) is formed by a brushless synchronous motor (4) (BLDC motor) and wherein control electronics (5) of the BLDC motor (4) are designed in such a way as to detect a thread lap (30) formed on the godet jacket (1), in that the control electronics (5) have at least one measuring means (16) for monitoring an operating parameter of the electric motor (2) and a storage means (18) for storing a threshold value of the operating parameter, in that the electric motor (2) for driving the godet jacket (1) can be controlled by the control electronics (5) in multiple operating modes, the operating modes being assigned separate monitoring algorithms with separate threshold value pre-definitions, and in that one of the operating modes determines the control of the electric motor (2) when laying a thread (29) on the godet jacket (1), the associated monitoring algorithm allocating the threshold value a critical time period for the undershoot or overshoot.
- Supplying device according to Claim 7,
characterized in that
the measuring means (16) for monitoring the operating parameter is formed as an ammeter for measuring a motor current. - Supplying device according to Claim 7 or 8,
characterized in that
a frictional means (24), which has a frictional surface (26) located opposite the godet jacket (1), is assigned to the godet jacket (1) at a short distance. - Supplying device according to Claim 9,
characterized in that
the frictional means (24) is formed by a pin (25) which extends coaxially with respect to the godet jacket (1). - Supplying device according to one of Claims 7 to 10,
characterized in that
the control electronics (5) are connected to a light-emitting diode (23) and/or a machine control unit (22). - Supplying device according to one of Claims 7 to 11,
characterized in that
the BLDC motor (4) and the godet jacket (1) form one structural unit, wherein the motor shaft (3) is mounted in a projecting manner in a bearing housing (8), wherein the control electronics (5) are encapsulated in an electric housing (13), and wherein a motor carrier (12) for holding a stator (11) is held between the bearing housing (8) and the electric housing (13).
Applications Claiming Priority (2)
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DE102013014557 | 2013-08-31 | ||
PCT/EP2014/067348 WO2015028309A1 (en) | 2013-08-31 | 2014-08-13 | Method for detecting a thread lap and device for guiding a thread |
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EP3038964A1 EP3038964A1 (en) | 2016-07-06 |
EP3038964B1 true EP3038964B1 (en) | 2020-07-08 |
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EP (1) | EP3038964B1 (en) |
JP (1) | JP6556134B2 (en) |
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EP3153609B1 (en) * | 2015-10-05 | 2021-11-10 | Hanning Elektro-Werke GmbH & Co. KG | Drive assembly for a textile machine |
CN108350616B (en) * | 2015-11-11 | 2021-08-06 | 欧瑞康纺织有限及两合公司 | Method for monitoring mass during deformation and deformation device |
DE112018005658A5 (en) * | 2017-11-25 | 2020-07-02 | Oerlikon Textile Gmbh & Co. Kg | Method for monitoring a winding device and winding device |
JP7390207B2 (en) * | 2020-02-20 | 2023-12-01 | Tmtマシナリー株式会社 | Textile machinery and yarn tension grasping method |
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JPH07118953A (en) * | 1993-10-20 | 1995-05-09 | Teijin Seiki Co Ltd | Apparatus for detecting wrap up of yarn to roller |
JP2002154749A (en) * | 2000-11-21 | 2002-05-28 | Murata Mach Ltd | Detecting device with bobbin for yarn feeder roller |
FR2870837A1 (en) * | 2004-05-26 | 2005-12-02 | Rieter Textile Machinery Fr | Friction drive for filiform element such as textile yarn has track on outer surface of hollow cylindrical body forming rotor of motor with permanent magnets |
TW200804163A (en) * | 2006-05-18 | 2008-01-16 | Saurer Gmbh & Co Kg | Delivery mechanism |
DE102007026631A1 (en) | 2007-06-06 | 2008-12-18 | Universität Rostock | Ear implant and stimulation electrode for an ear implant |
DE102007062631B4 (en) * | 2007-12-22 | 2018-07-26 | Saurer Germany Gmbh & Co. Kg | Device for monitoring unwanted filament winding in a textile machine |
-
2014
- 2014-08-13 JP JP2016537210A patent/JP6556134B2/en active Active
- 2014-08-13 EP EP14755621.1A patent/EP3038964B1/en active Active
- 2014-08-13 CN CN201480047255.1A patent/CN105517930B/en active Active
- 2014-08-13 WO PCT/EP2014/067348 patent/WO2015028309A1/en active Application Filing
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Also Published As
Publication number | Publication date |
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CN105517930A (en) | 2016-04-20 |
JP2016533992A (en) | 2016-11-04 |
EP3038964A1 (en) | 2016-07-06 |
WO2015028309A1 (en) | 2015-03-05 |
CN105517930B (en) | 2019-01-01 |
JP6556134B2 (en) | 2019-08-07 |
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