EP2190768B1 - Method for monitoring the presence of a finish - Google Patents

Method for monitoring the presence of a finish Download PDF

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Publication number
EP2190768B1
EP2190768B1 EP07802272A EP07802272A EP2190768B1 EP 2190768 B1 EP2190768 B1 EP 2190768B1 EP 07802272 A EP07802272 A EP 07802272A EP 07802272 A EP07802272 A EP 07802272A EP 2190768 B1 EP2190768 B1 EP 2190768B1
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EP
European Patent Office
Prior art keywords
finish
application
amount
time
metering system
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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.)
Not-in-force
Application number
EP07802272A
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German (de)
French (fr)
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EP2190768A1 (en
Inventor
Franz Böni
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.)
SSM AG
SSM Schaerer Schweiter Mettler AG
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SSM AG
SSM Schaerer Schweiter Mettler AG
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Publication of EP2190768A1 publication Critical patent/EP2190768A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H71/00—Moistening, sizing, oiling, waxing, colouring or drying filamentary material as additional measures during package formation
    • B65H71/007—Oiling, waxing by applying liquid during spooling
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/24—Means for regulating the amount of treating material picked up by the textile material during its treatment
    • D06B23/28—Means for regulating the amount of treating material picked up by the textile material during its treatment in response to a test conducted on the treating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/20—Volume; Volume flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/40—Temperature; Thermal conductivity
    • 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

  • Auxiliaries are textile auxiliaries, for example emulsions of plants and mineral oils, which improve the properties and / or the behavior of threads, for example during their further processing. Treating threads with Avivage is called avivage.
  • a generic device (Avivier worn) for applying a Avivag réellesmenge on a thread is eg from the EP 1 405 938 A1 known.
  • a control unit of the metering system is connected to a donor for the yarn speed of the ongoing to be tuned thread and the emery application amount is calculated in dependence on the measured by the encoder yarn speed.
  • the sensor signal difference of the temperature sensors is proportional to the conveying speed of the softening application amount through the liquid line. The higher the conveying speed, the faster the heating in the heating area is promoted in the direction of the second temperature sensor.
  • the heater is positioned closer to the first temperature sensor than to the second temperature sensor. At standstill, so in the absence of a Avivagechenes, due to the static state between the temperature sensors, the lubrication at the first temperature sensor is heated more than the second temperature sensor. If the lubricant is pumped, ie if a softening flow is present, heat is transported from the heater to the second temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor. The greater the fluidizing flux, the less the effect described is disturbed by disturbances, in particular by diffusion processes (temperature drift), and the more reliably can the presence of the lubricant be determined by evaluating the evaluation of the time profile of the difference between the measured application temperatures.
  • the invention has for its object to provide a method for monitoring the presence of a lubricant, which avoids the disadvantages of the prior art, in particular wherein the presence of the lubricant can be reliably monitored at low flow rates.
  • the time course of the delivery change in the amount of fuel it can be preferred for the time course of the delivery change in the amount of fuel that the time course has a steep rise and fall, ie the duration of the rise and fall only a few percent, eg less than 10% of the time duration of the total Delivery rate change is.
  • the boost triggers a greater temperature difference (sensor reaction) compared with the application of the avivage application. This stronger sensor reaction is evaluated.
  • the time interval of the delivery rate change amounts to a duration of less than 10 seconds, preferably up to 3 seconds, a sensor signal difference sufficient for the purpose of monitoring the presence of a refreshment is generated in known avivating devices.
  • the delivery rate of the change in delivery amount of 1 to 100 microliters, which does not lead to any disturbing change in the order of Avivage on the thread or the yarn.
  • a short return of a lubricant return quantity in the liquid line against the direction of the application device is carried out by means of the metering system.
  • the recovery can e.g. be carried out immediately after the increase in delivery amount.
  • the amount of lubricant recirculation corresponds to the amount of oil production increase, preferably wherein the duration of the recirculation corresponds to the duration of the amount of oil production increase, for example, when the application starts.
  • the recirculation of the reclaimer can be kept constant over the time average.
  • the advance amount increase is carried out at the time of starting the application of the softening application amount onto the running textile yarn or the running textile yarn, ie at the start of a spindle on which the yarn or yarn is wound, and the return feed is at the time of finishing the application the softening application amount, that is at or after the stop of the spindle on which the thread or the yarn is wound, made.
  • the latter variant of the method is particularly suitable for use when, after the return feed, a bobbin change of the yarn or thread to be finished is carried out.
  • the amount of lubricant application to the yarn or yarn remains constant, independently of the performance of the lubricant delivery quantity change according to the invention, in particular for identical lubricant volumes of the boosts. Only a small amount of lubricant is conveyed back and forth in the liquid line. Upon or after the spindle is stopped, the additional amount of lubricant supplied by the boost at startup is compensated for, so that the thread or yarn always has the correct application, i.e., the correct amount. to the desired avivival order quantity.
  • the finish must be introduced into the system, i. in the liquid line through which the lubricant is conveyed, are introduced. Therefore, the desired delivery rate is not disturbed by the first boost during startup.
  • control unit is set up to control the metering system in such a way that, after a brief increase in the amount of lubricant delivery, a short return of a lubricant recirculation quantity in the liquid line against the direction of the applicator device, in particular after the stop of a Umspulvonreaes in which the lubricant is applied, is carried out by means of the metering system, the applied to the thread or the yarn Avivaggessmenge can be kept constant over time, especially if the Avivage tubmengenerhöhung is equal to the Avivageück lymphmenge.
  • the dosing system preferably has a pump which can be driven by a lifting magnet, whereby a precise control of the delivery amount of lubricant is made possible in a simple manner since such a lifting magnet enables a pulsating pumping of the lubricant through the liquid line.
  • the metering system can have any drives in particular any electric motors as a drive.
  • the heater is preferably positioned asymmetrically between the first and the second temperature sensor on the liquid line.
  • the latter leads to the sensor signal difference being significantly more pronounced. Since the temperature difference between the first and the second temperature sensor is determined for the evaluation of the presence of the lubricant, the heat energy introduced into the lubricant, ie the heat output between the temperature sensors, can be kept low. At standstill, due to the static condition between the temperature sensors, the lubricant is more strongly heated at the first temperature sensor than at the second temperature sensor. If the avivage is pumped, heat is transferred from the heater to the temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor.
  • the device according to the invention is particularly suitable for use in the application of lubricant in a yarn processing machine, in particular a winding machine.
  • a heater for liquefying the finish after the Device preferably provided immediately before the application of the finishing on the thread or the yarn, positioned to improve the flow properties of the finish.
  • FIG. 1 shows a schematic representation of an inventive Avivier Published
  • FIG. 2 shows the time course of the difference of measured Avivagetemperaturen and the associated Avivage absorbmengenverlauf in an inventive Avivier sleep.
  • FIG. 1 is a schematic representation of an inventive Avivier raised shown.
  • a yarn 2 to be finished is unwound from a supply spool 3 in a winding station and wound onto a take-up spool 4.
  • an application device 6 which is positioned in the region of the yarn path of the yarn 2, and which is designed as an application nozzle, a softening application quantity is applied to the running yarn 2.
  • the lubricant to be applied ie the amount of softening application, is conveyed from a storage container (not shown) through a liquid line 8 in the direction of the application nozzle.
  • the lubricant is conveyed by means of a metering system 11 controlled by a control unit 10, for example a pump which can be driven by a stepper motor.
  • a control unit 10 for example a pump which can be driven by a stepper motor.
  • the conveyance of the softening application quantity is symbolized by the arrowheaded line within the liquid line 8.
  • a lubrication measuring system with a first temperature sensor 13 for measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line 8 and a second temperature sensor 14 for measuring a time course of a second Avivagetemperatur at a second measuring point on the liquid line 8 is positioned ,
  • a heater 16 By means of a heater 16, the avivage to be conveyed between the first and the second measuring point on the liquid line 8 is heated.
  • the heater 16 is positioned asymmetrically to the measuring points, ie the distance between the heater 16 and the first measuring point is, for example, smaller than the distance between the heater 16 and the second measuring point.
  • the measured coating temperatures are transferred, for example, as sensor signals of the temperature sensors 13, 14 to an evaluation unit.
  • the evaluation unit may, for example, as a microcomputer, or. Microchip, at the analog inputs, the sensor signals of the temperature sensors abut be formed. It is also possible to use a separate unit, for example a differential amplifier 20, as part of the evaluation unit for determining the difference of the measured heating temperatures, the difference then being the output of the separate unit, ie the difference of the sensor signals, input of an analog input of a microcomputer 21 Evaluation can come.
  • the microcomputer 21 is also used as a control unit 10 of the dosing system 11.
  • the control unit 10 controls the dosing system 11 in such a way that during the measurement of the finishing temperatures in a time interval, a short-term oiling amount change 25, which is carried out as a delivery amount increase, is generated by means of the dosing system 11.
  • the latter can e.g. be achieved by a brief increase in the speed of the motor of the pump.
  • the short-term increase in conveying quantity 25 is shown in the figure as a rectangular elevation on the line conveying arrowheads symbolizing the conveying of the receiving order quantity.
  • the FIG. 2 shows the time course of the difference of measured Avivagetemperaturen as the difference of the sensor signals (sensor signal difference) 30 of the temperature sensors at an associated Avivage assistantmengenverlauf 35.
  • the Avivage assistantmengenverlauf 35 can, for example, the engine speed of the pump of the dosing system driving motor can be used.
  • the illustrated advance delivery flow rate curve 35 has a delivery amount increase (positive boost) 37 at the time of starting the application of the amount of softening application to the running textile yarn or the running textile yarn, ie at low values of the time axis t.
  • This advance delivery amount increase 37 is shown as the range of the advance delivery rate progression 35, which exceeds the eg constant range of the service charge order quantity.
  • a short-term return (negative boost) 39 of a lubricant return amount in the liquid line is opposite to the application device direction by means of the metering system performed.
  • This return promotion is shown as the range of the advance delivery flow rate 35 which goes below the, for example, constant range of the call-up order quantity.
  • the illustrated sensor signal difference 30 results in the presence of lubrication in the liquid line. Since the second temperature sensor is arranged in a region after the heating, it can therefore be concluded that such a sensor signal difference 30 occurs in the presence of a coating on the application device direction.
  • flanks 40,41 For the necessary evaluation of the sensor signal difference 30, the areas of the flanks 40,41 the resulting from the Avivageeaumengenverlauf 35 sensor signal difference 30 used. These flanks 40, 41 occur in each case with a time delay represented in the figure by a double arrow in each case relative to the lubricant delivery quantity changes produced by the negative and positive boost.
  • the time delay comes from the avivage flow, but also contains system-related time delays, eg the time constant of the temperature transfer to the temperature sensors.
  • the time delay through the avivage flow corresponds to the time required for the flow of the lubrication along the distance of the distance from the heater to the downstream in the flow direction temperature sensor.
  • the positive boost generated by briefly increasing the speed of the pump drive of the dosing for example, the amount of, for example, about 40 microliters in eg about 2 seconds can be promoted as Avivage felicitmengenerhöhung 39.
  • This positive boost has, for example, a lubrication volume of a few microliters and generates a raised edge of the sensor signal difference in the flow sensor formed by the calibration measuring system. If the sensor signal difference 30 falls after the boost by a specified threshold, so Avivage is present. Thereafter, the pump of the dosing system conveys with a preset amount of time for a conditioning agent per time. The sensor signal difference 30 increases slowly. This slow increase results from the lower sensor signal difference 30 caused by the boost.
  • the metering system is controlled by the control unit immediately after the stop of the pump of the metering system in such a way that the pump generates the negative boost 39 by means of a short return of the lubricant.
  • the return conveying is carried out in such a way that the negative boost 39 is preferred, at least with regard to its pumped coating volume also in terms of its time course to the previous positive boost 37 is identical, ie corresponds in terms of amount.
  • the negative boost with a softening volume of a few microliters causes a faster and higher increase in the sensor signal difference 30. If the sensor signal difference 30 increases after the negative boost 39 by a specified threshold value, then lubrication is present.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Disclosed is a method for monitoring the presence of a finish on an applicator (6) when an amount of finish is applied to an advancing textile thread or yarn (2) by means of said applicator (6). The disclosed method comprises the following steps: - the amount of finish to be applied is delivered, especially from a storage vessel, through a duct (8) in the direction of the applicator by means of a dosing system (11) for controlled delivery of the finish to be applied; - a progress of a first finish temperature is measured in a first measurement point on the duct by means of a first temperature sensor (13); - a progress of a second finish temperature is measured in a second measurement point on the duct by means of a second temperature sensor (14); - the finish to be delivered is heated between the first and the second measurement point by means of a heater (16); and - the progress of the difference between the measured finish temperatures is determined, and the presence of the finish is monitored by evaluating the progress of the difference between the measured finish temperatures. The amount of delivered finish (25) is temporarily increased beyond the amount of finish to be applied during a certain interval by means of the dosing system (11) when the finish temperatures are measured.

Description

Die Erfindung betrifft ein Verfahren zur Überwachung des Vorhandenseins einer Avivage (Avivageüberwachungsverfahren), insbesondere einem Öl, an einer Applikationsvorrichtung beim Auftragen einer Avivageauftragsmenge auf einen laufenden textilen Faden oder ein laufendes textiles Garn mittels der Applikationsvorrichtung sowie eine Einrichtung zur Durchführung des Verfahrens. Unter Vorgandensein von Avivage wird insbesondere auch das Vorhandensein einer Fließgeschwindigkeit der Avivage, also eines Avivageflusses, verstanden. Das Avivageüberwachungsverfahren weist folgende Verfahrensschritte auf:

  • Förderung der Avivageauftragsmenge aus einem Vorratsbehälter durch eine Flüssigkeitsleitung in Applikationsvorrichtungsrichtung mittels eines Dosiersystems für die gesteuerte Förderung der aufzutragenden Avivage,
  • Messung eines zeitlichen Verlaufs einer ersten Avivagetemperatur an einem ersten Messpunkt an der Flüssigkeitsleitung mittels eines ersten Temperatursensors,
  • Messung eines zeitlichen Verlaufs einer zweiten Avivagetemperatur an einem zweiten Messpunkt an der Flüssigkeitsleitung mittels eines zweiten Temperatursensors,
  • Aufheizen der zu fördernden Avivage zwischen dem ersten und dem zweiten Messpunkt mittels einer Heizung, und
  • Ermitteln des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen und Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen.
The invention relates to a method for monitoring the presence of a lubricant (lubrication monitoring method), in particular an oil, on an application device when applying a softening application quantity to a running textile thread or a running textile yarn by means of the application device and a device for carrying out the method. Under Vorgandensein of Avivage is understood in particular the presence of a flow rate of Avivage, ie a Avivageflusses. The lubrication monitoring method comprises the following method steps:
  • Conveying the amount of softening application from a storage container through a liquid line in the direction of application device by means of a metering system for the controlled delivery of the lubricant to be applied,
  • Measuring a chronological course of a first temperature of the service at a first measuring point on the fluid line by means of a first temperature sensor,
  • Measuring a time course of a second temperature Avivagetemperatur at a second measuring point on the liquid line by means of a second temperature sensor,
  • Heating the promotional Avivage between the first and the second measuring point by means of a heater, and
  • Determining the time course of the difference of the measured temperatures Avivagetemperaturen and monitoring the presence of the Avivage by evaluating the time course of the difference of the measured Avivagetemperaturen.

Als Avivage werden Textilhilfsmittel wie z.B. Emulsionen von Pflanzen und Mineralölen, die die Eigenschaften und/oder das Verhalten von Fäden z.B. bei deren Weiterverarbeitung verbessern, bezeichnet. Die Behandlung von Fäden mit Avivage wird als avivieren bezeichnet. Eine gattungsgemäße Einrichtung (Aviviereinrichtung) zum Auftragen einer Avivageauftragsmenge auf einen Faden ist z.B. aus der EP 1 405 938 A1 bekannt. Dabei ist eine Steuereinheit des Dosiersystems an einen Geber für die Garngeschwindigkeit des zu avivierenden laufenden Fadens angeschlossen und die Avivageauftragsmenge wird in Abhängigkeit von der mittels des Gebers gemessenen Garngeschwindigkeit berechnet. Bei einer derartigen Aviviereinrichtung muss während des Betriebs sichergestellt sein, dass keine unbehandelten Bereiche am zu avivierenden Faden auftreten, d.h. es muss ständig ausreichend Avivage an der Applikationsvorrichtungsrichtung vorhanden sein. Dazu wird durch Ermitteln des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen das Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen durchgeführt.Auxiliaries are textile auxiliaries, for example emulsions of plants and mineral oils, which improve the properties and / or the behavior of threads, for example during their further processing. Treating threads with Avivage is called avivage. A generic device (Aviviereinrichtung) for applying a Avivagauftragsmenge on a thread is eg from the EP 1 405 938 A1 known. In this case, a control unit of the metering system is connected to a donor for the yarn speed of the ongoing to be tuned thread and the emery application amount is calculated in dependence on the measured by the encoder yarn speed. In the case of such a softening device, it must be ensured during operation that no untreated areas occur on the thread to be sharpened, that is, there must always be sufficient lubrication at the direction of the applicator device. For this purpose, by determining the time course of the difference of the measured temperature Avivage the monitoring of the presence of the Avivage performed by evaluating the time course of the difference of the measured Avivagetemperaturen.

Insbesondere beim Anfahren des Auftragens der Avivageauftragsmenge z.B. beim Umspulen einer Garnspule mittels einer Spulmaschine können bei geringen Avivageauftragsmengen von unter 0,5 Gramm pro Minute (g/min) Schwierigkeiten beim Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen, also der Sensorsignaldifferenz der Temperatursensoren, auftreten, wodurch das Vorhandensein von Avivage an der Applikationsvorrichtungsrichtung nicht zweifelsfrei sicher festgestellt werden kann.
Die Sensorsignaldifferenz ist proportional zur Fördergeschwindigkeit der Avivageauftragsmenge durch die Flüssigkeitsleitung. Je höher die Fördergeschwindigkeit ist, desto schneller wird die im Bereich der Heizung aufgeheizte Avivage in Richtung des zweiten Temperatursensors gefördert.In particular, when starting the application of the application amount Veriv eg when rewinding a yarn package by means of a winder difficulties with the evaluation of the time course of the difference of the measured Avivagetemperaturen, so the sensor signal difference of the temperature sensors, at low Avivagauftragsmengen of less than 0.5 grams per minute (g / min) occur, whereby the presence of lubrication in the Applikationsvorrichtungsrichtung can not be determined beyond reasonable doubt.
The sensor signal difference is proportional to the conveying speed of the softening application amount through the liquid line. The higher the conveying speed, the faster the heating in the heating area is promoted in the direction of the second temperature sensor.

Die Heizung ist näher beim ersten Temperatursensor als bei zweiten Temperatursensor positioniert. Im Stillstand, also bei Fehlen eines Avivageflusses, ist infolge des statischen Zustandes zwischen den Temperatursensoren die Avivage beim ersten Temperatursensor stärker erwärmt als beim zweiten Temperatursensor. Wird die Avivage gefördert, ist also ein Avivagefluss vorhanden, so wird durch den Avivagefluss Wärme von der Heizung zum zweiten Temperatursensor transportiert. Es resultiert beim zweiten Temperatursensor eine höhere Temperatur als beim ersten Temperatursensor.
Je größer der Avivagefluss desto weniger wird der beschriebene Effekt durch Störungen, insbesondere durch Diffusionsprozesse (Temperaturdrift), gestört und desto sicherer kann das Vorhandensein der Avivage mittels des Auswerten des Auswertens des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen festgestellt werden. Die Schwierigkeiten beim Auswerten resultieren daraus, dass zur Feststellung des Vorhandenseins der Avivage beim Anfahren des Auftragens der Avivageauftragsmenge, also z.B. beim Start der Spulmaschine, an der das Avivageüberwachungsverfahren angewendet wird, eine durch das Anfahren der Förderung der Avivage im Verlauf der Sensorsignaldifferenz auftretende Flanke, also eine zeitliche Änderung der Sensorsignaldifferenz, ausgewertet wird. Bei geringen Avivageauftragsmengen und daraus resultierender geringer Fördergeschwindigkeit kann die Temperaturdrift so groß sein, dass die Sensorsignaldifferenz keine für eine sichere Feststellung des Vorhandenseins der Avivage ausreichend ausgeprägte Flanke aufweist.The heater is positioned closer to the first temperature sensor than to the second temperature sensor. At standstill, so in the absence of a Avivageflusses, due to the static state between the temperature sensors, the lubrication at the first temperature sensor is heated more than the second temperature sensor. If the lubricant is pumped, ie if a softening flow is present, heat is transported from the heater to the second temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor.
The greater the fluidizing flux, the less the effect described is disturbed by disturbances, in particular by diffusion processes (temperature drift), and the more reliably can the presence of the lubricant be determined by evaluating the evaluation of the time profile of the difference between the measured application temperatures. The difficulties in the evaluation result from the fact that, to determine the presence of the lubricant when starting the application of the softening application quantity, ie, for example, when starting the winder to which the lubricant monitoring process is applied, an occurring by the start of promotion of the lubricant in the course of the sensor signal difference edge, So a temporal change of the sensor signal difference, is evaluated. At low application amount and resulting low transport speed, the temperature drift can be so large that the sensor signal difference has no sufficient for a reliable determination of the presence of the finish Avivage edge.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Überwachung des Vorhandenseins einer Avivage bereitzustellen, welches die Nachteile des Standes der Technik vermeidet, insbesondere wobei das Vorhandensein der Avivage bei kleinen Fördermengen zuverlässig überwacht werden kann.The invention has for its object to provide a method for monitoring the presence of a lubricant, which avoids the disadvantages of the prior art, in particular wherein the presence of the lubricant can be reliably monitored at low flow rates.

Diese Aufgabe wird durch das Verfahren und die Vorrichtung der unabhängigen Ansprüche gelöst. Die abhängigen Ansprüche stellen bevorzugte Ausführungsformen der Erfindung dar.This object is achieved by the method and apparatus of the independent claims. The dependent claims represent preferred embodiments of the invention.

Bei dem erfindungsgemäßen Verfahren kann die Überwachung des Vorhandenseins einer Avivage, insbesondere einem Öl, an einer z.B. als Applikationsdüse ausgebildeten Applikationsvorrichtung, beim Auftragen einer Avivageauftragsmenge auf einen laufenden textilen Faden oder ein laufendes textiles Garn mittels der Applikationsvorrichtung, bei einer Avivageauftragsmenge von unter 0,5 Gramm pro Minute, bevorzugt unter 0,3 oder 0,2 Gramm pro Minute, vorgenommen werden. Das erfindungsgemäße Verfahren weist folgende Verfahrensschritte auf:

  • Förderung der Avivageauftragsmenge, insbesondere aus einem Vorratsbehälter, durch eine Flüssigkeitsleitung in Applikationsvorrichtungsrichtung mittels eines Dosiersystems für die gesteuerte Förderung der aufzutragenden Avivage. Die Avivageauftragsmenge kann sich dabei im Verlauf des Auftragens, z.B. wie in der EP 1 405 938 A1 beschrieben, ändern. Die Avivageauftragsmenge kann dabei insbesondere auf drei Arten bestimmt werden. Zum einen kann die z.B. einer Spulstellensteuerung bekannte Garngeschwindigkeit an eine Avivagesteuerung des Dosiersystems übergeben werden. Zum anderen kann die Garngeschwindigkeit mittels eines Geberrades gemessen und an die Avivagesteuerung des Dosiersystems übergeben werden. Weiter kann die Garngeschwindigkeit z.B. manuell an der Avivagesteuerung des Dosiersystems eingebbar sein. Die Steuerung des Dosiersystems erfolgt dann über ein Start-Stopp-Signal.
  • Messung eines zeitlichen Verlaufs einer ersten Avivagetemperatur an einem ersten Messpunkt an der Flüssigkeitsleitung mittels eines ersten Temperatursensors, und Messung eines zeitlichen Verlaufs einer zweiten Avivagetemperatur an einem zweiten Messpunkt an der Flüssigkeitsleitung mittels eines zweiten Temperatursensors. Dabei müssen nicht zwingend die Temperaturen der Avivage selbst gemessen werden. Es reicht auch aus, z.B. die Oberflächentemperatur der Flüssigkeitsleitung an den Messpunkten zu messen.
  • Aufheizen der zu fördernden Avivage zwischen dem ersten und dem zweiten Messpunkt mittels einer Heizung, und Ermitteln des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen (Temperaturdifferenz)und Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen. Erfindungsgemäß wird während der Messung der Avivagetemperaturen in einem Zeitintervall eine von der Avivageauftragsmenge abweichende kurzzeitige Avivagefördermengenänderung (Boost), also eine Avivagefördermengenerhöhung und/oder -verminderung, mittels des Dosiersystems erzeugt.
In the method according to the invention, the monitoring of the presence of a lubricant, in particular an oil, on an application device designed as an application nozzle, for example, when applying a lubricant application quantity to a running textile yarn or a running textile yarn by means of the application device, at a softening application quantity of less than 0.5 Grams per minute, preferably less than 0.3 or 0.2 grams per minute. The method according to the invention comprises the following method steps:
  • Promoting the amount of softening application amount, in particular from a reservoir, through a liquid line in Applikationsvorrichtungsrichtung by means of a metering system for the controlled promotion of the applied lubricant. The revocation order quantity can change during the order, for example as in the EP 1 405 938 A1 described, change. The revocation order quantity can be determined in particular in three ways. On the one hand, the yarn speed known, for example, to a winding unit control can be transferred to an adjustment control of the metering system. On the other hand, the yarn speed can be measured by means of a sender wheel and transferred to the lubrication control of the dosing system. Furthermore, the yarn speed can be manually entered, for example, on the avivage control of the metering system. The dosing system is then controlled via a start-stop signal.
  • Measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line by means of a first temperature sensor, and measuring a time course of a second Avivagetemperatur at a second measuring point on the liquid line by means of a second temperature sensor. It does not necessarily have the Temperatures of the avivage itself are measured. It is also sufficient, for example, to measure the surface temperature of the liquid line at the measuring points.
  • Heating the to be delivered Avivage between the first and the second measuring point by means of a heater, and determining the time course of the difference of the measured Avivagetemperaturen (temperature difference) and monitoring the presence of the Avivage by evaluating the time course of the difference of the measured Avivagetemperaturen. According to the invention, during the measurement of the finishing temperatures in a time interval, a short-term delivery-rate change (boost) deviating from the amount of application-made quantity, ie a delivery-quantity increase and / or reduction, is generated by means of the metering system.

Mittels des erfindungsgemäßen Verfahrens kann auch bei geringen Avivagedurchflussgeschwindigkeiten durch die Flüssigkeitsleitung, bis hin zum Stillstand der Avivageförderung d.h. bei geringen Avivageauftragsmengen, eine zur Erkennung des Vorhandenseins von Avivage ausreichende zeitliche Änderung der Differenz der gemessenen Avivagetemperaturen erzeugt werden. Die gemäß Stand der Technik nur sehr kleinen Differenzen der gemessenen Avivagetemperaturen, die teilweise insbesondere durch Temperaturdrift nicht mehr von Störsignalen unterscheidbar sind, werden mittels des erfindungsgemäßen Verfahrens größer und damit zu deren Auswertung zuverlässiger. Letzteres wird dadurch erreicht, dass durch die kurzzeitige Avivagefördermengenänderung eine erhöhte Flanke in der Sensorsignaldifferenz erzeugt wird, die zur zuverlässigen Erkennung des Vorhandenseins der Avivage bei geringen Avivageauftragsmengen ausreicht. Zur Definition eines Boosts kann für den zeitlichen Verlauf der Avivagefördermengenänderung bevorzugt gelten, dass der zeitliche Verlauf einen steilen Anstieg und einen steilen Abfall aufweisen, d.h. die Zeitdauer des Anstieges und des Abfalls lediglich einige Prozent, z.B. weniger als 10% der Zeitdauer der gesamten Avivagefördermengenänderung beträgt. Der Boost löst eine gegenüber der Avivageförderung bei der Avivageauftragsmenge stärkere Temperaturdifferenz (Sensorreaktion) aus. Diese stärkere Sensorreaktion wird ausgewertet.By means of the method according to the invention, even at low flow velocities through the fluid line, up to a standstill of the lubricant delivery, ie at low application rates, a sufficient time change of the difference between the measured temperatures can be generated to detect the presence of oiling. The only very small differences of the measured coating temperatures according to the prior art, which are no longer distinguishable from interfering signals, in particular due to temperature drift, become greater by means of the method according to the invention and thus more reliable for their evaluation. The latter is achieved by the fact that the short-term Avivagefördermengenänderung a raised edge in the sensor signal difference is generated, which is sufficient for reliable detection of the presence of the lubricant with small amount of lubricant application. For the definition of a boost, it can be preferred for the time course of the delivery change in the amount of fuel that the time course has a steep rise and fall, ie the duration of the rise and fall only a few percent, eg less than 10% of the time duration of the total Delivery rate change is. The boost triggers a greater temperature difference (sensor reaction) compared with the application of the avivage application. This stronger sensor reaction is evaluated.

Wenn das Zeitintervall der Avivagefördermengenänderung eine Dauer von weniger als 10 Sekunden, bevorzugt bis 3 Sekunden, beträgt, wird eine zur bei bekannten Aviviereinrichtungen zur Überwachung des Vorhandenseins einer Avivage ausreichende Sensorsignaldifferenz erzeugt. Dabei kann die Fördermenge der Avivagefördermengenänderung 1 bis 100 Mikroliter betragen, was zu keiner störenden Änderung des Auftrags von Avivage auf den Faden oder das Garn führt.If the time interval of the delivery rate change amounts to a duration of less than 10 seconds, preferably up to 3 seconds, a sensor signal difference sufficient for the purpose of monitoring the presence of a refreshment is generated in known avivating devices. In this case, the delivery rate of the change in delivery amount of 1 to 100 microliters, which does not lead to any disturbing change in the order of Avivage on the thread or the yarn.

Bevorzugt wird während eines zeitlich zusammenhängenden, ununterbrochenen Auftragungsprozesses, nach einer kurzzeitigen, über die gewünschte Avivageauftragsmenge hinausgehende Avivagefördermengenerhöhung eine kurzzeitige Rückförderung einer Avivagerückfördermenge in der Flüssigkeitsleitung entgegen der Applikationsvorrichtungsrichtung mittels des Dosiersystems vorgenommen. Die Rückförderung kann z.B. unmittelbar nach der Avivagefördermengenerhöhung vorgenommen werden. Dadurch kann eine unerwünschte Änderung des Auftrags von Avivage auf den Faden oder das Garn auch bei relativ großen, kurzzeitigen Avivagefördermengenänderungen verhindert werden.Preferably, during a timely, continuous application process, after a brief increase in the amount of lubricant delivery beyond the desired amount of application, a short return of a lubricant return quantity in the liquid line against the direction of the application device is carried out by means of the metering system. The recovery can e.g. be carried out immediately after the increase in delivery amount. As a result, an undesirable change in the application of Avivage on the thread or the yarn can be prevented even with relatively large, short-term Avivagefördermengenmengenänderungen.

Vorteilhaft entspricht die Avivagerückfördermenge der Avivagefördermengenerhöhung, bevorzugt wobei die Dauer der Rückförderung der Dauer der Avivagefördermengenerhöhung z.B. beim Anfahren des Auftragens entspricht. Auf diese Weise wird kann die Avivagerückfördermenge im zeitlichen Mittel konstant gehalten werden.Advantageously, the amount of lubricant recirculation corresponds to the amount of oil production increase, preferably wherein the duration of the recirculation corresponds to the duration of the amount of oil production increase, for example, when the application starts. In this way, the recirculation of the reclaimer can be kept constant over the time average.

Besonders bevorzugt wird die Avivagefördermengenerhöhung zur Zeit des Anfahrens des Auftragens der Avivageauftragsmenge auf den laufenden textilen Faden oder das laufende textile Garn vorgenommen, also beim Start einer Spindel auf die der Faden oder das Garn aufgespult wird, und die Rückförderung wird zur Zeit des Beendens des Auftragens der Avivageauftragsmenge, also beim oder nach dem Stopp der Spindel auf die der Faden oder das Garn aufgespult wird, vorgenommen. Letztere Verfahrensvariante eignet sich insbesondere zur Anwendung, wenn nach der Rückförderung ein Spulenwechsel des zu avivierenden Garns oder Fadens vorgenommen wird. Da der Boost beim Start gleich groß ist wie der negative Boost beim Beenden, also beim Stop des Auftragens der Avivage, bleibt die Avivageauftragsmenge auf den Faden oder das Garn, von der Durchführung der erfindungsgemäßen Avivagefördermengenänderung unabhängig, insbesondere bei identischen Avivagevolumina der Boosts, konstant. Es wird lediglich eine geringe Avivagemenge in der Flüssigkeitsleitung vor- und zurückgefördert. Bei bzw. nach dem Stopp der Spindel wird die durch den Boost beim Start zusätzliche Avivagefördermenge kompensiert, deshalb kommt es auf dem Faden oder dem Garn immer zum korrekten Auftrag, d.h. zur gewünschten Avivivageauftragsmenge. Beim ersten Start, also beim Anfahren einer Garnbearbeitungsmaschine die zur Durchführung des erfindungsgemäßen Verfahrens eingerichtet ist, muss die Avivage ins System, d.h. in die Flüssigkeitsleitung durch die die Avivage gefördert wird, eingebracht werden. Deshalb wird die gewünschte Avivagefördermenge durch den ersten Boost beim Anfahren nicht gestört.Particularly preferably, the advance amount increase is carried out at the time of starting the application of the softening application amount onto the running textile yarn or the running textile yarn, ie at the start of a spindle on which the yarn or yarn is wound, and the return feed is at the time of finishing the application the softening application amount, that is at or after the stop of the spindle on which the thread or the yarn is wound, made. The latter variant of the method is particularly suitable for use when, after the return feed, a bobbin change of the yarn or thread to be finished is carried out. Since the boost at startup is the same as the negative boost at the end, ie stopping the application of the lubricant, the amount of lubricant application to the yarn or yarn remains constant, independently of the performance of the lubricant delivery quantity change according to the invention, in particular for identical lubricant volumes of the boosts. Only a small amount of lubricant is conveyed back and forth in the liquid line. Upon or after the spindle is stopped, the additional amount of lubricant supplied by the boost at startup is compensated for, so that the thread or yarn always has the correct application, i.e., the correct amount. to the desired avivival order quantity. At the first start, that is to say when starting up a yarn processing machine which is set up to carry out the method according to the invention, the finish must be introduced into the system, i. in the liquid line through which the lubricant is conveyed, are introduced. Therefore, the desired delivery rate is not disturbed by the first boost during startup.

Eine erfindungsgemäße Einrichtung zum Auftragen einer Avivageauftragsmenge auf einen laufenden textilen Faden oder ein laufendes textiles Garn mittels einer Applikationsvorrichtung, insbesondere einer Applikationsdüse, ist zur Durchführung des erfindungsgemäßen Verfahrens eingerichtet. Die erfindungsgemäße Einrichtung zum Auftragen einer Avivageauftragsmenge weist auf:

  • ein Dosiersystem mit einer Steuereinheit für die gesteuerte Förderung der aufzutragenden Avivage, insbesondere aus einem Vorratsbehälter, durch eine Flüssigkeitsleitung in Applikationsvorrichtungsrichtung,
  • ein Avivagemesssystem mit einem ersten Temperatursensor zur Messung eines zeitlichen Verlaufs einer ersten Avivagetemperatur an einem ersten Messpunkt an der Flüssigkeitsleitung und einem zweiten Temperatursensor zur Messung eines zeitlichen Verlaufs einer zweiten Avivagetemperatur an einem zweiten Messpunkt an der Flüssigkeitsleitung, wobei eine Heizung zum Aufheizen der zu fördernden Avivage zwischen dem ersten und dem zweiten Messpunkt an der Flüssigkeitsleitung vorgesehen ist, und
  • eine Auswerteeinheit zum Ermitteln des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen und zum Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen.
Erfindungsgemäß ist die Steuereinheit eingerichtet, das Dosiersystem derart zu steuern, dass während der Messung der Avivagetemperaturen in einem Zeitintervall eine von der Avivageauftragsmenge abweichende kurzzeitige Avivagefördermengenänderung mittels des Dosiersystems erzeugt wird. Dadurch wird eine für das Feststellen des Vorhandenseins der Avivage, d.h. für die Auswertung, zwischen den Temperatursensoren ausreichende Änderung des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen erzeugt, d.h. der zeitliche Verlauf der Differenz der gemessenen Avivagetemperaturen weist dadurch eine für die Auswertung ausreichend ausgeprägte Flanke auf.A device according to the invention for applying a softening application quantity to a running textile thread or a running textile yarn by means of an application device, in particular an application nozzle, is set up to carry out the method according to the invention. The Device according to the invention for applying a softening order quantity comprises:
  • a metering system with a control unit for the controlled delivery of the lubricant to be applied, in particular from a storage container, through a liquid line in the direction of the applicator device,
  • a lubrication measuring system with a first temperature sensor for measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line and a second temperature sensor for measuring a time course of a second Avivagetemperatur at a second measuring point on the liquid line, wherein a heater for heating the Avivage to be conveyed is provided between the first and the second measuring point on the liquid line, and
  • an evaluation unit for determining the time profile of the difference of the measured temperatures Avivagetemperaturen and for monitoring the presence of the Avivage by evaluating the time course of the difference of the measured Avivagetemperaturen.
According to the invention, the control unit is set up to control the dosing system in such a way that during the measurement of the conditioning temperatures in a time interval, a short-term lubricant delivery quantity change deviating from the conditioning application quantity is generated by means of the dosing system. As a result, a change in the time profile of the difference between the measured heating temperatures sufficient for determining the presence of the lubricant, ie for the evaluation, between the temperature sensors is generated, ie, the time profile of the difference of the measured temperatures Avivagetemperaturen thereby has a sufficiently pronounced edge for the evaluation ,

Wenn die Steuereinheit eingerichtet ist, das Dosiersystem derart zu steuern, dass nach einer kurzzeitigen Avivagefördermengenerhöhung eine kurzzeitige Rückförderung einer Avivagerückfördermenge in der Flüssigkeitsleitung entgegen der Applikationsvorrichtungsrichtung, insbesondere nach Stopp eines Umspulprozesses bei dem die Avivage aufgetragen wird, mittels des Dosiersystems vorgenommen wird, kann die auf den Faden oder das Garn aufzutragende Avivageauftragsmenge zeitlich konstant gehalten werden, insbesondere wenn die Avivagefördermengenerhöhung gleich der Avivagerückfördermenge ist.If the control unit is set up to control the metering system in such a way that, after a brief increase in the amount of lubricant delivery, a short return of a lubricant recirculation quantity in the liquid line against the direction of the applicator device, in particular after the stop of a Umspulprozesses in which the lubricant is applied, is carried out by means of the metering system, the applied to the thread or the yarn Avivaggessmenge can be kept constant over time, especially if the Avivagefördermengenerhöhung is equal to the Avivageückfördermenge.

Bevorzugt weist das Dosiersystem eine von einem Hubmagnet antreibbare Pumpe auf, wodurch eine exakte Steuerung der Avivagefördermenge auf einfache Weise ermöglicht wird da ein derartiger Hubmagnet ein pulsierendes Pumpen der Avivage durch die Flüssigkeitsleitung ermöglicht. Prinzipiell kann das Dosiersystem jedoch beliebe Antriebe insbesondere beliebige Elektromotoren als Antrieb aufweisen.The dosing system preferably has a pump which can be driven by a lifting magnet, whereby a precise control of the delivery amount of lubricant is made possible in a simple manner since such a lifting magnet enables a pulsating pumping of the lubricant through the liquid line. In principle, however, the metering system can have any drives in particular any electric motors as a drive.

Bevorzugt ist die Heizung asymmetrisch zwischen dem ersten und dem zweiten Temperatursensor an der Flüssigkeitsleitung positioniert Letzteres führt dazu, dass die Sensorsignaldifferenz signifikanter ausgeprägt ist.
Da für die Auswertung des Vorhandenseinseins der Avivage die Temperaturdifferenz zwischen dem ersten und dem zweiten Temperatursensor ermittelt wird, kann die in die Avivage eingeleitete Heizenergie, also die Heizleistung zwischen den Temperatursensoren gering gehalten werden. Im Stillstand ist infolge des statischen Zustandes zwischen den Temperatursensoren die Avivage beim ersten Temperatursensor stärker erwärmt als beim zweiten Temperatursensor. Wird Avivage gefördert, so wird durch den Avivagefluss Wärme von der Heizung zum zwieten Temperatursensor transportiert. Es resultiert beim zweiten Temperatursensor eine höhere Temperatur als beim ersten Temperatursensor.The heater is preferably positioned asymmetrically between the first and the second temperature sensor on the liquid line. The latter leads to the sensor signal difference being significantly more pronounced.
Since the temperature difference between the first and the second temperature sensor is determined for the evaluation of the presence of the lubricant, the heat energy introduced into the lubricant, ie the heat output between the temperature sensors, can be kept low. At standstill, due to the static condition between the temperature sensors, the lubricant is more strongly heated at the first temperature sensor than at the second temperature sensor. If the avivage is pumped, heat is transferred from the heater to the temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor.

Die erfindungsgemäße Einrichtung eignet sich insbesondere zur Verwendung zum Auftragen von Avivage in einer Garnbearbeitungsmaschine, insbesondere einer Spulmaschine. Dabei kann eine Heizung zum Verflüssigen der Avivage nach der Einrichtung, bevorzugt unmittelbar vor dem Auftrag der Avivage auf den Faden oder das Garn, positioniert vorgesehen sein um die Fließeigenschaften der Avivage zu verbessern.The device according to the invention is particularly suitable for use in the application of lubricant in a yarn processing machine, in particular a winding machine. Here, a heater for liquefying the finish after the Device, preferably provided immediately before the application of the finishing on the thread or the yarn, positioned to improve the flow properties of the finish.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert.The invention will be explained in more detail with reference to an embodiment with reference to the drawing.

Die Figur 1 zeigt schematische Darstellung einer erfindungsgemäßen Aviviereinrichtung;
Die Figur 2 zeigt den zeitlichen Verlauf der Differenz von gemessenen Avivagetemperaturen und den zugehörigen Avivagefördermengenverlauf in einer erfindungsgemäßen Aviviereinrichtung.The FIG. 1 shows a schematic representation of an inventive Aviviereinrichtung;
The FIG. 2 shows the time course of the difference of measured Avivagetemperaturen and the associated Avivagefördermengenverlauf in an inventive Aviviereinrichtung.

Die Figuren der Zeichnung zeigen den erfindungsgemäßen Gegenstand stark schematisiert und sind nicht maßstäblich zu verstehen. Die einzelnen Bestandteile des erfindungsgemäßen Gegenstandes sind so dargestellt, dass ihr Aufbau gut gezeigt werden kann.The figures of the drawing show the subject matter according to the invention in a highly schematized manner and are not to be understood to scale. The individual components of the article according to the invention are shown so that their structure can be well shown.

In Figur 1 ist eine schematische Darstellung einer erfindungsgemäßen Aviviereinrichtung gezeigt. Ein zu avivierendes Garn 2 wird in einer Spulstelle von einer Vorlagespule 3 abgespult und auf eine Aufnahmespule 4 aufgespult. Dabei wird mittels einer im Bereich des Fadenlaufs des Garns 2 positionierten als Applikationsdüse ausgebildeten Applikationsvorrichtung 6 eine Avivageauftragsmenge auf das laufende Garn 2 aufgetragen. Die aufzutragende Avivage, d.h. die Avivageauftragsmenge, wird aus einem nicht dargestellten Vorratsbehälter durch eine Flüssigkeitsleitung 8 in Applikationsdüsenrichtung gefördert. Die Avivage wird mittels eines von einer Steuereinheit 10 gesteuerten Dosiersystems 11, z.B. einer von einem Schrittmotor antreibbaren Pumpe, gefördert. Das Fördern der Avivageauftragsmenge ist durch die mit Pfeilspitzen versehene Linie innerhalb der Flüssigkeitsleitung 8 symbolisiert.In FIG. 1 is a schematic representation of an inventive Aviviereinrichtung shown. A yarn 2 to be finished is unwound from a supply spool 3 in a winding station and wound onto a take-up spool 4. In this case, by means of an application device 6, which is positioned in the region of the yarn path of the yarn 2, and which is designed as an application nozzle, a softening application quantity is applied to the running yarn 2. The lubricant to be applied, ie the amount of softening application, is conveyed from a storage container (not shown) through a liquid line 8 in the direction of the application nozzle. The lubricant is conveyed by means of a metering system 11 controlled by a control unit 10, for example a pump which can be driven by a stepper motor. The conveyance of the softening application quantity is symbolized by the arrowheaded line within the liquid line 8.

An der Flüssigkeitsleitung 8 ist ein Avivagemesssystem mit einem ersten Temperatursensor 13 zur Messung eines zeitlichen Verlaufs einer ersten Avivagetemperatur an einem ersten Messpunkt an der Flüssigkeitsleitung 8 und einem zweiten Temperatursensor 14 zur Messung eines zeitlichen Verlaufs einer zweiten Avivagetemperatur an einem zweiten Messpunkt an der Flüssigkeitsleitung 8 positioniert. Mittels einer Heizung 16 wird die zu fördernde Avivage zwischen dem ersten und dem zweiten Messpunkt an der Flüssigkeitsleitung 8 aufgeheizt. Die Heizung 16 ist dabei asymmetrisch zu den Messpunkten positioniert, d.h. der Abstand zwischen Heizung 16 und erstem Messpunkt ist z.B. kleiner als der Abstand zwischen Heizung 16 und zweitem Messpunkt.
Die gemessenen Avivagetemperaturen werden z.B. als Sensorsignale der Temperatursensoren 13,14 einer Auswerteeinheit übergeben. Von der Auswerteeinheit wird der zeitliche Verlauf der Differenz ΔT der gemessenen Avivagetemperaturen ermittelt und zum Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen verwendet. Die Auswerteeinheit kann z.B. als ein Mikrocomputer,bzw. Mikrochip, an dessen Analogeingängen die Sensorsignale der Temperatursensoren anliegen, ausgebildet sein. Es kann auch eine separate Einheit, z.B. ein Differenzverstärker 20, als Teil der Auswerteeinheit zum Ermitteln der Differenz der gemessenen Avivagetemperaturen verwendet werden, wobei dann die Differenz als Ausgabe der separaten Einheit, d.h. als Differenz der Sensorsignale, als Eingabe eines Analogeingangs eines Mikrocomputers 21 zur Auswertung kommen kann.
Im dargestellten Beispiel wird der Mikrocomputer 21 zugleich als Steuereinheit 10 des Dosiersystems 11 verwendet. Die Steuereinheit 10 steuert das Dosiersystem 11 derart, dass während der Messung der Avivagetemperaturen in einem Zeitintervall eine über die Avivageauftragsmenge hinausgehende kurzzeitige als Avivagefördermengenerhöhung ausgeführte Avivagefördermengenänderung 25 mittels des Dosiersystems 11 erzeugt wird.On the liquid line 8, a lubrication measuring system with a first temperature sensor 13 for measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line 8 and a second temperature sensor 14 for measuring a time course of a second Avivagetemperatur at a second measuring point on the liquid line 8 is positioned , By means of a heater 16, the avivage to be conveyed between the first and the second measuring point on the liquid line 8 is heated. The heater 16 is positioned asymmetrically to the measuring points, ie the distance between the heater 16 and the first measuring point is, for example, smaller than the distance between the heater 16 and the second measuring point.
The measured coating temperatures are transferred, for example, as sensor signals of the temperature sensors 13, 14 to an evaluation unit. From the evaluation of the time course of the difference .DELTA.T the measured Avivagetemperaturen is determined and used to monitor the presence of the Avivage by evaluating the time course of the difference of the measured Avivagetemperaturen. The evaluation unit may, for example, as a microcomputer, or. Microchip, at the analog inputs, the sensor signals of the temperature sensors abut be formed. It is also possible to use a separate unit, for example a differential amplifier 20, as part of the evaluation unit for determining the difference of the measured heating temperatures, the difference then being the output of the separate unit, ie the difference of the sensor signals, input of an analog input of a microcomputer 21 Evaluation can come.
In the illustrated example, the microcomputer 21 is also used as a control unit 10 of the dosing system 11. The control unit 10 controls the dosing system 11 in such a way that during the measurement of the finishing temperatures in a time interval, a short-term oiling amount change 25, which is carried out as a delivery amount increase, is generated by means of the dosing system 11.

Letzteres kann z.B. durch eine kurzzeitige Erhöhung der Drehzahl des Motors der Pumpe erreicht werden. Die kurzzeitige Avivagefördermengenerhöhung 25 ist in der Figur als rechteckige Erhöhung an der das Fördern der Avivageauftragsmenge symbolisierenden Linie mit Pfeilspitzen dargestellt.The latter can e.g. be achieved by a brief increase in the speed of the motor of the pump. The short-term increase in conveying quantity 25 is shown in the figure as a rectangular elevation on the line conveying arrowheads symbolizing the conveying of the receiving order quantity.

Die Figur 2 zeigt den zeitlichen Verlauf der Differenz von gemessenen Avivagetemperaturen als Differenz der Sensorsignale (Sensorsignaldifferenz) 30 der Temperatursensoren bei einem zugehörigen Avivagefördermengenverlauf 35. Zur Darstellung des Avivagefördermengenverlauf 35 kann z.B. die Motordrehzahl des die Pumpe des Dosiersystems antreibenden Motors verwendet werden. Der dargestellte Avivagefördermengenverlauf 35 weist eine Avivagefördermengenerhöhung (positiver Boost) 37 zur Zeit des Anfahrens des Auftragens der Avivageauftragsmenge auf den laufenden textilen Faden oder das laufende textile Garn, also bei geringen Werten der Zeitachse t, auf. Diese Avivagefördermengenerhöhung 37 ist als der Bereich des Avivagefördermengenverlaufs 35, der über den z.B. konstanten Bereich der Avivageauftragsmenge hinausgeht, dargestellt. Bei dem dargestellten Avivagefördermengenverlauf 35 wird zur Zeit des Beendens, also bei hohen Werten der Zeitachse t, des Auftragens der Avivageauftragsmenge, also nach dem positiven Boost 37, eine kurzzeitige Rückförderung (negativer Boost) 39 einer Avivagerückfördermenge in der Flüssigkeitsleitung entgegen der Applikationsvorrichtungsrichtung mittels des Dosiersystems vorgenommen. Diese Rückförderung ist als der Bereich des Avivagefördermengenverlaufs 35, der unter den z.B. konstanten Bereich der Avivageauftragsmenge hinaus geht, dargestellt. Die dargestellte Sensorsignaldifferenz 30 ergibt sich bei Vorhandensein von Avivage in der Flüssigkeitsleitung. Da der zweite Temperatursensor in einem Bereich nach der Heizung angeordnet ist, kann also bei Auftreten einer derartigen Sensorsignaldifferenz 30 auf ein Vorhandensein von Avivage an der Applikationsvorrichtungsrichtung geschlossen werden. Zum dazu notwendigen Auswerten der Sensorsignaldifferenz 30 werden die Bereiche der Flanken 40,41 der aus dem Avivagefördermengenverlauf 35 resultierenden Sensorsignaldifferenz 30 herangezogen. Diese Flanken 40,41 treten jeweils mit einer in der Figur durch jeweils einen Doppelpfeil dargestellten zeitlichen Verzögerung gegenüber den durch den negativen und positiven Boost erzeugten Avivagefördermengenänderungen auf. Die zeitliche Verzögerung kommt vom Avivagefluss, enthält aber auch systembedingte Zeitverzögerungen, z.B. die Zeitkonstante der Temperaturübertragung zu den Temperatursensoren. Die zeitliche Verzögerung durch den Avivagefluss entspricht dabei der Zeit, die zum Fließen der Avivage entlang der Strecke des Abstandes von der Heizung bis zum in Fließrichtung dahinter liegenden Temperatursensor benötigt wird.
Beim Start des Auftragens wird, sobald die Spulstelle z.B. aus Figur 1 startet, der positive Boost durch kurzzeitiges Erhöhung der Drehzahl des Pumpenantriebs des Dosiersystems erzeugt. Dabei kann z.B. die Menge von z.B. ca. 40 Mikrolitern in z.B. ca. 2 Sekunden als Avivagefördermengenerhöhung 39 gefördert werden. Dieser positive Boost weist z.B. ein Avivagevolumen von einigen Mikrolitern auf und erzeugt in dem vom Avivagemesssystem ausgebildeten Durchflusssensor eine erhöhte Flanke der Sensorsignaldifferenz. Fällt die Sensorsignaldifferenz 30 nach dem Boost um einen festgelegten Schwellwert, so ist Avivage vorhanden. Danach fördert die Pumpe des Dosiersystems mit einer voreingestellte Avivageauftragsmenge pro Zeit. Die Sensorsignaldifferenz 30 steigt dabei langsam an. Dieser langsame Anstieg resultiert aus der vom Boost verursachten tieferen Sensorsignaldifferenz 30. Nach einiger Zeit stabilisiert sich die Sensorsignaldifferenz 30 auf einen für die voreingestellten Avivageauftragsmenge pro Zeit charakteristischen Wert, wenn Störgrößen ausgeschlossen sind.
Am Ende des Auftragens wird unmittelbar nach dem Stop der Pumpe des Dosiersystems das Dosiersystem von der Steuereinheit derart gesteuert, dass die Pumpe durch eine kurzzeitige Rückförderung von Avivage den negativen Boost 39 erzeugt. Das Rückfördern wird dabei derart vorgenommen, dass der negative Boost 39 zumindest hinsichtlich seines gepumpten Avivagevolumens, bevorzugt auch hinsichtlich seines zeitlichen Verlaufs zu dem zuvor liegenden positiven Boost 37 identisch ist, d.h. betragsmäßig entspricht. Der negative Boost mit einem Avivagevolumen von einigen Mikrolitern bewirkt ein schnelleres und höheres Ansteigen der Sensorsignaldifferenz 30. Steigt die Sensorsignaldifferenz 30 nach dem negativen Boost 39 um einen festgelegten Schwellwert, so ist Avivage vorhanden.The FIG. 2 shows the time course of the difference of measured Avivagetemperaturen as the difference of the sensor signals (sensor signal difference) 30 of the temperature sensors at an associated Avivagefördermengenverlauf 35. To illustrate the Avivagefördermengenverlauf 35 can, for example, the engine speed of the pump of the dosing system driving motor can be used. The illustrated advance delivery flow rate curve 35 has a delivery amount increase (positive boost) 37 at the time of starting the application of the amount of softening application to the running textile yarn or the running textile yarn, ie at low values of the time axis t. This advance delivery amount increase 37 is shown as the range of the advance delivery rate progression 35, which exceeds the eg constant range of the service charge order quantity. At the time of finishing, ie at high values of the time axis t, of the application of the softening application quantity, ie after the positive boost 37, a short-term return (negative boost) 39 of a lubricant return amount in the liquid line is opposite to the application device direction by means of the metering system performed. This return promotion is shown as the range of the advance delivery flow rate 35 which goes below the, for example, constant range of the call-up order quantity. The illustrated sensor signal difference 30 results in the presence of lubrication in the liquid line. Since the second temperature sensor is arranged in a region after the heating, it can therefore be concluded that such a sensor signal difference 30 occurs in the presence of a coating on the application device direction. For the necessary evaluation of the sensor signal difference 30, the areas of the flanks 40,41 the resulting from the Avivagefördermengenverlauf 35 sensor signal difference 30 used. These flanks 40, 41 occur in each case with a time delay represented in the figure by a double arrow in each case relative to the lubricant delivery quantity changes produced by the negative and positive boost. The time delay comes from the avivage flow, but also contains system-related time delays, eg the time constant of the temperature transfer to the temperature sensors. The time delay through the avivage flow corresponds to the time required for the flow of the lubrication along the distance of the distance from the heater to the downstream in the flow direction temperature sensor.
When starting the application is, as soon as the winding unit, for example FIG. 1 starts, the positive boost generated by briefly increasing the speed of the pump drive of the dosing. In this case, for example, the amount of, for example, about 40 microliters in eg about 2 seconds can be promoted as Avivagefördermengenerhöhung 39. This positive boost has, for example, a lubrication volume of a few microliters and generates a raised edge of the sensor signal difference in the flow sensor formed by the calibration measuring system. If the sensor signal difference 30 falls after the boost by a specified threshold, so Avivage is present. Thereafter, the pump of the dosing system conveys with a preset amount of time for a conditioning agent per time. The sensor signal difference 30 increases slowly. This slow increase results from the lower sensor signal difference 30 caused by the boost. After some time, the sensor signal difference 30 stabilizes at a value characteristic of the preset amount of air conditioner command per time when disturbance variables are excluded.
At the end of the application, the metering system is controlled by the control unit immediately after the stop of the pump of the metering system in such a way that the pump generates the negative boost 39 by means of a short return of the lubricant. The return conveying is carried out in such a way that the negative boost 39 is preferred, at least with regard to its pumped coating volume also in terms of its time course to the previous positive boost 37 is identical, ie corresponds in terms of amount. The negative boost with a softening volume of a few microliters causes a faster and higher increase in the sensor signal difference 30. If the sensor signal difference 30 increases after the negative boost 39 by a specified threshold value, then lubrication is present.

Vorgeschlagen wird ein Verfahren zur Überwachung des Vorhandenseins einer Avivage, an einer Applikationsvorrichtung 6 beim Auftragen einer Avivageauftragsmenge auf einen laufenden textilen Faden oder ein laufendes textiles Garn 2 mittels der Applikationsvorrichtung 6, mit den Verfahrensschritten

  • Förderung der Avivageauftragsmenge, insbesondere aus einem Vorratsbehälter, durch eine Flüssigkeitsleitung 8 in Applikationsvorrichtungsrichtung mittels eines Dosiersystems 11 für die gesteuerte Förderung der aufzutragenden Avivage,
  • Messung eines zeitlichen Verlaufs einer ersten Avivagetemperatur an einem ersten Messpunkt an der Flüssigkeitsleitung mittels eines ersten Temperatursensors 13,
  • Messung eines zeitlichen Verlaufs einer zweiten Avivagetemperatur an einem zweiten Messpunkt an der Flüssigkeitsleitung mittels eines zweiten Temperatursensors 14,
  • Aufheizen der zu fördernden Avivage zwischen dem ersten und dem zweiten Messpunkt mittels einer Heizung 16, und
  • Ermitteln des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen und Überwachen des Vorhandenseins der Avivage durch Auswerten des zeitlichen Verlaufs der Differenz der gemessenen Avivagetemperaturen.
Proposed is a method for monitoring the presence of a lubricant, on an application device 6 when applying a softening application amount to a running textile thread or a running textile yarn 2 by means of the application device 6, with the method steps
  • Conveying the amount of softening application, in particular from a storage container, through a liquid line 8 in the direction of application device by means of a metering system 11 for the controlled delivery of the lubricant to be applied,
  • Measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line by means of a first temperature sensor 13,
  • Measuring a time course of a second temperature Avivagetemperatur at a second measuring point on the liquid line by means of a second temperature sensor 14,
  • Heating the promotional Avivage between the first and the second measuring point by means of a heater 16, and
  • Determining the time course of the difference of the measured temperatures Avivagetemperaturen and monitoring the presence of the Avivage by evaluating the time course of the difference of the measured Avivagetemperaturen.

Dabei wird während der Messung der Avivagetemperaturen in einem Zeitintervall eine über die Avivageauftragsmenge hinausgehende kurzzeitige Avivagefördermengenänderung 25 mittels des Dosiersystems 11 erzeugt.In this case, during the measurement of the conditioning temperatures in a time interval, a short-term lubricant delivery quantity change 25, which exceeds the amount of lubricant application, is generated by means of the dosing system 11.

Claims (10)

  1. A method for monitoring the presence of a finish, in particular an oil, at an application device (6), in particular an application nozzle, during application of a finish application amount to a running textile thread or a running textile yarn (2) by means of the application device (6), in particular for a finish application amount of less than 0.5 grams per minute, preferably less than 0.3 or 0.2 grams per minute, comprising the following method steps:
    - delivery of the finish application amount, in particular from a storage tank, through a fluid line (8) in the direction of the application device by means of a metering system (11) for the controlled delivery of the finish to be applied;
    - measuring a variation with time of a first finish temperature at a first measuring point on the fluid line by means of a first temperature sensor (13);
    - measuring a variation with time of a second finish temperature at a second measuring point on the fluid line by means of a second temperature sensor (14);
    - heating the finish to be delivered between the first and the second measuring points by means of a heater (16), and
    - determining the variation with time of the difference between the measured finish temperatures and monitoring the presence of the finish by evaluating the variation with time of the difference between the measured finish temperatures,
    characterised in that
    during measurement of the finish temperatures in a time interval, a brief change (25) in the finish delivery amount varying from the finish application amount is generated by means of the metering system (11).
  2. A method according to claim 1,
    characterised in that
    the time interval of the change (25) in finish delivery amount comes to a duration of less than 10 seconds, preferably up to 3 seconds, and/or the delivery amount of the change in finish delivery amount comes to 1 to 100 microlitres.
  3. A method according to claim 1 or 2,
    characterised in that
    after a brief increase (37) in the finish delivery amount exceeding the finish application amount, a brief return of a finish return amount (39) in the fluid line (8) in a direction opposite to the direction of the application device is effected by means of the metering system (11).
  4. A method according to claim 3,
    characterised in that
    the finish return amount (39) corresponds to the increase (37) in the finish delivery amount, the duration of the return preferably corresponding to the duration of the increase (37) in the finish delivery amount, preferably when starting up the application operation.
  5. A method according to any one of claims 3 and 4,
    characterised in that
    the increase (37) in the finish delivery amount is effected at the time of starting the application of the finish application amount to the running textile thread or the running textile yarn (2) and the return is effected at the time of terminating the application of the finish application amount.
  6. An arrangement for applying a finish application amount to a running textile thread or a running textile yarn (2) by means of an application device (6), in particular an application nozzle, having
    - a metering system (11) with a control unit (10) for the controlled supply of the finish to be applied, in particular from a storage tank, through a fluid line (8) in the direction of the application device,
    - a finish measuring system having a first temperature sensor (13) for measuring a variation with time of a first finish temperature at a first measuring point on the fluid line (8) and a second temperature sensor (14) for measuring a variation with time of a second finish temperature at a second measuring point on the fluid line (8), a heater (16) being provided for heating the finish to be conveyed between the first and the second measuring points on the fluid line (8), and
    - an evaluation unit for determining the variation with time of the difference between the measured finish temperatures and for monitoring the presence of the finish by evaluating the variation with time of the difference (30) between the measured finish temperatures,
    characterised in that
    the control unit (10) is designed to control the metering system (11) in such a manner that during measurement of the finish temperatures in a time interval, a brief change (25) in the finish delivery amount varying from the finish application amount is generated by means of the metering system (11).
  7. An arrangement according to claim 6,
    characterised in that
    the control unit (10) is designed to control the metering system (11) in such a way that after a brief increase (37) in the finish delivery amount a brief return of a finish return amount (39) in the fluid line (8) in a direction opposite to the application device direction is effected by means of the metering system (11).
  8. An arrangement according to any one of claims 6 and 7,
    characterised in that
    the metering system (11) comprises a pump drivable by a lifting magnet.
  9. An arrangement according to any one of claims 6 to 8,
    characterised in that
    the heater (16) is positioned asymmetrically between the first and the second temperature sensor on the fluid line (8).
  10. Use of the arrangement according to any one of claims 6 to 9 for the application of finish in a yarn-processing machine, in particular a winding machine.
EP07802272A 2007-09-12 2007-09-12 Method for monitoring the presence of a finish Not-in-force EP2190768B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/007930 WO2009036773A1 (en) 2007-09-12 2007-09-12 Method for monitoring the presence of a finish

Publications (2)

Publication Number Publication Date
EP2190768A1 EP2190768A1 (en) 2010-06-02
EP2190768B1 true EP2190768B1 (en) 2011-12-21

Family

ID=39493617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802272A Not-in-force EP2190768B1 (en) 2007-09-12 2007-09-12 Method for monitoring the presence of a finish

Country Status (6)

Country Link
EP (1) EP2190768B1 (en)
CN (1) CN101801830B (en)
AT (1) ATE538061T1 (en)
EG (1) EG26049A (en)
MA (1) MA31697B1 (en)
WO (1) WO2009036773A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057525B4 (en) 2009-12-01 2015-07-09 Zschimmer & Schwarz Gmbh & Co. Kg Chemische Fabriken Apparatus and method for applying liquids to a thread
CH719452A1 (en) * 2022-02-25 2023-08-31 Ssm Schaerer Schweiter Mettler Ag Device for oiling a running yarn.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261356A1 (en) * 1972-12-15 1974-06-20 Sahm Georg Fa Wound yarn lubricator - with totally enclosed housing containing heated serrated lubricating surface
DE4333716C1 (en) * 1993-10-03 1995-02-02 Graf & Co Gmbh Process and devices for applying preparations to yarns or threads on the running thread
DE19843132A1 (en) * 1997-09-27 1999-04-08 Barmag Barmer Maschf Fluid applicator for a moving yarn
DE19817418A1 (en) * 1998-04-18 1999-10-21 Schoeller Textil Gmbh & Co Kg Application of surface finish to fibers for rovings and yarns
EP1405938B1 (en) * 2002-10-05 2006-07-12 Schärer Schweiter Mettler AG Device for applying a finish to a moving yarn

Also Published As

Publication number Publication date
CN101801830B (en) 2012-08-01
EG26049A (en) 2013-01-13
CN101801830A (en) 2010-08-11
WO2009036773A1 (en) 2009-03-26
ATE538061T1 (en) 2012-01-15
MA31697B1 (en) 2010-09-01
EP2190768A1 (en) 2010-06-02

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