EP0163040B1 - Device for the continual treatment of endless textile fabric material - Google Patents

Device for the continual treatment of endless textile fabric material Download PDF

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Publication number
EP0163040B1
EP0163040B1 EP85103486A EP85103486A EP0163040B1 EP 0163040 B1 EP0163040 B1 EP 0163040B1 EP 85103486 A EP85103486 A EP 85103486A EP 85103486 A EP85103486 A EP 85103486A EP 0163040 B1 EP0163040 B1 EP 0163040B1
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EP
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Prior art keywords
rollers
roller
guide rollers
force measuring
textile material
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EP85103486A
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German (de)
French (fr)
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EP0163040A1 (en
Inventor
Gerold Fleissner
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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    • 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
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/34—Driving arrangements of machines or apparatus
    • D06B3/345—Means for controlling the tension in the textile material
    • 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
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/12—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics in zig-zag manner over series of guiding means

Definitions

  • the invention relates to a device for the continuous treatment of endless textile material, such as. B. fabric webs, with several rotatably mounted in a housing, connected in two rows one behind the other, partially individually electrically driven deflection rollers and an upstream and / or downstream, from a pneumatically or hydraulically via a pressure cylinder or electrically loaded with a predetermined pressure voltage control device, such as Dancer roller, pair of press rollers controlled at the speed of rotation for the transport of the textile goods.
  • a predetermined pressure voltage control device such as Dancer roller, pair of press rollers controlled at the speed of rotation for the transport of the textile goods.
  • a shrinking material web is also placed in a wet treatment device of the type mentioned, the textile material contracts more and more during the treatment, with a shrinkage curve characteristic of this textile material.
  • This fact means that each deflecting roller following in the transport direction must rotate at a different speed than the previous one. It is true for such a treatment that no, or at least a uniform fabric tension is generated in the textile material over the entire working process. Otherwise the shrinking process would be adversely affected.
  • the regulation of the speed of passage of the textile goods, d. H. the take-off speed is generally done by the known dancer roller control.
  • the height of the dancer roll is used to feed the take-off unit, such as a pair of press rolls at the outlet of the machine, via a potentiometer, which ensures the desired passage of the goods.
  • a special regulation of the power supply is referred to in DE-C-856 290.
  • the invention has for its object to further develop a device of the type mentioned in such a way that the deflection rollers provided with a direct drive within the device are driven differentially, in comparison to the product tension prevailing there with the aim that at each deflection roller by actuation of a exactly the same torque, the additional longitudinal tensile forces that arise on the respective deflection rollers, as a result of a shrinking process occurring, the respectively changing coefficients of friction or the absorbed drag water, etc., are now canceled out again to the value “zero”.
  • the invention provides that the electric drive is electrically connected to at least two of the deflecting rollers, each with a force measuring device, the measured values of which are compared in a differential amplifier and converted there into a positive or negative control signal for correcting the actual torque.
  • a force measuring device the measured values of which are compared in a differential amplifier and converted there into a positive or negative control signal for correcting the actual torque.
  • the first and last driven deflecting roller of this treatment device with the force measuring devices are provided.
  • the weight of the dancer roller which determines the tension in the textile material due to its active weight and is also a deflection roller, is measured and used to adjust the torque of the deflection roller drives within the treatment device, or where more than just two , possibly all driven deflection rollers, are compared and controlled in terms of their drive value.
  • the setpoint torque for driving the deflection rollers is expediently determined by the active weight of the dancer roller or the like.
  • the invention is explained using an exemplary embodiment on a wet treatment device. It consists of a completely closed housing 1 with an inlet and outlet provided on the end faces, in which deflection rollers 2, 2 'are rotatably mounted in two rows for the meandering transport of a textile material 3.
  • the deflection rollers 2 'of the lower row rotate within a liquid with a level 4. They are not driven, while the rollers 2 of the upper row are each individually electrically driven.
  • a pair of squeeze rollers 5 is arranged, which exerts a certain longitudinal tension on the textile goods 3 for the uniform transport thereof.
  • the transport speed, the speed of rotation of the press rolls 5 determines the dancer roll 6 arranged upstream of the device, which acts on the press roll drive via a potentiometer 7.
  • the dancer roller 6 is pneumatically or hydraulically loaded by a pressure cylinder 8. However, it is also possible to arrange an electrical voltage regulating device here.
  • the setpoint torque is fixed on the roller drives 10.
  • This dancer roll is preceded by a further pair of press rolls 9, which basically can be assigned to the preceding machine parts, not shown, between which, however, the transport speed of the textile goods 3 is controlled by their respective direct current drive.
  • the web tension S that is determined by the transport of the textile material through the treatment device from the press rolls 5, 9.
  • this web tensile force S on the other side of the roller corresponds to the force S '.
  • the frictional resistance W acts counter to the circumferential force and the roller weight G W acts vertically downwards.
  • the deflecting rollers must be driven with a certain size of a torque.
  • load cells M 1 and M 2 are used , by means of which the first and last deflection roller are supported on their bearing shaft in relation to the housing of the device.
  • These electrical units measure the web tensile forces F N at the assigned deflecting rollers 2 and pass them on according to FIG. 3 to a differential amplifier, which converts them into a control signal: depending on the sign of the resulting signal used for torque control, the torque of the deflecting roller drives then changes.
  • the optimum setting is achieved when the two load cells M 1 and M 2 are subjected to the same forces F N.
  • the dancer roller 6 can also be used to adjust the torque on the last deflecting roller (M 2 ), since this is the desirable target torque due to its weight or due to the longitudinal tension it causes in the textile material pretends. M i can therefore be omitted and M 3 can work together with M 2 .
  • the device is shown again in cross section in FIG. 4, with the upper driven deflecting roller 2 and the lower loose-rotating deflecting roller 2 '.
  • the electric motor 10 drives the upper deflection roller 2, and the load cells M 1 and M 2 (or M 3 ), which are assigned to the respective shaft on the other longitudinal side of the device, are used for the longitudinal traction train which actually acts on this deflection roller.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Kontinue-Behandlung von endlosem Textilgut, wie z. B. Gewebebahnen, mit mehreren in einem Gehäuse drehbar gelagerten, in zwei Reihen hintereinander geschalteten, teilweise einzeln elektrisch angetriebenen Umlenkwalzen und einem vor- und/oder nachgeschalteten, von einer pneumatisch oder hydraulisch über einen Druckzylinder oder elektrisch mit einem vorbestimmten Druck belasteten Spannungsregeleinrichtung, wie Tänzerwalze, in der Umlaufgeschwindigkeit gesteuerten Preßwalzenpaar für den Transport des Textilgutes.The invention relates to a device for the continuous treatment of endless textile material, such as. B. fabric webs, with several rotatably mounted in a housing, connected in two rows one behind the other, partially individually electrically driven deflection rollers and an upstream and / or downstream, from a pneumatically or hydraulically via a pressure cylinder or electrically loaded with a predetermined pressure voltage control device, such as Dancer roller, pair of press rollers controlled at the speed of rotation for the transport of the textile goods.

Bei der Bearbeitung von endlosem Textilgut, sei es eine breite Ware oder seien es z. B. Kabel, nimmt die Warenspannung von Umlenkwalze zu Umlenkwalze infolge des Reibwiderstandes an diesen Umlenkwalzen zu. Dieses negative, verzögerte Drehmoment würde ein Abbremsen der mit einer bestimmten Geschwindigkeit laufenden Ware bewirken, wenn nicht eine konstante Geschwindigkeit durch das ziehende Preßwalzenpaar aufrecht erhalten würde. Infolgedessen steigt die Zugspannung in der Ware, und zwar von Umlenkwalze zu Umlenkwalze.When processing endless textile goods, be it a wide product or z. B. cable, the fabric tension increases from deflection roller to deflection roller due to the frictional resistance on these deflection rollers. This negative, decelerated torque would cause the goods running at a certain speed to slow down if a constant speed were not maintained by the pair of pressing rollers pulling. As a result, the tensile stress in the goods increases, namely from deflection roller to deflection roller.

Wird weiterhin eine schrumpfende Warenbahn in eine Naßbehandlungsvorrichtung der genannten Art gegeben, so zieht sich das Textilgut im Laufe der Behandlung immer mehr zusammen, und zwar mit einer für dieses Textilgut charakteristischen Schrumpfkurve. Diese Tatsache hat zur Folge, daß sich jede in Transportrichtung folgende Umlenkwalze mit einer anderen Drehzahl drehen muß als die vorhergehende. Es gilt nämlich für eine derartige Behandlung, daß über den ganzen Arbeitsvorgang keine, zumindest aber eine gleichmäßige Warenspannung in dem Textilgut erzeugt wird. Ansonsten würde der Schrumpfvorgang nachteilig beeinflußt werden. Die Regelung der Durchzugsgeschwindigkeit des Textilgutes, d. h. die Abzugsgeschwindigkeit, erfolgt im allgemeinen durch die bekannte Tänzerwalzensteuerung. Dabei wird durch die Höhenstellung der Tänzerwalze über ein Potentiometer dem Abzugsaggregat, wie Preßwalzenpaar am Auslauf der Maschine, der Strom zugeführt, der für den gewünschten Durchzug der Ware sorgt. Auf eine besondere Regelung der Stromzufuhr wird in der DE-C-856 290 hingewiesen.If a shrinking material web is also placed in a wet treatment device of the type mentioned, the textile material contracts more and more during the treatment, with a shrinkage curve characteristic of this textile material. This fact means that each deflecting roller following in the transport direction must rotate at a different speed than the previous one. It is true for such a treatment that no, or at least a uniform fabric tension is generated in the textile material over the entire working process. Otherwise the shrinking process would be adversely affected. The regulation of the speed of passage of the textile goods, d. H. the take-off speed is generally done by the known dancer roller control. The height of the dancer roll is used to feed the take-off unit, such as a pair of press rolls at the outlet of the machine, via a potentiometer, which ensures the desired passage of the goods. A special regulation of the power supply is referred to in DE-C-856 290.

Bei der Naßbehandlung einer Warenbahn ist zu beachten, daß bei einer vorgesehenen Warenlaufgeschwindigkeit eine Warenbelastung durch Schleppwasser vorhanden ist. Dies bewirkt eine weiterhin anwachsende Warenspannung an jeder Umlenkwalze. Die Belastung durch Schleppwasser steigt parabelförmig mit der zunehmenden Warengeschwindigkeit.When wet treating a web of material, it should be noted that there is a load of goods due to drag water at the intended goods speed. This causes a further increase in the fabric tension on each deflection roller. The drag water pollution increases parabolically with the increasing goods speed.

Es ist durch die DE-A-1474969 bekannt, zur Lösung dieses Problems die einzeln, z. B. elektrisch angetriebenen Umlenkwalzen über von Hand einstellbare Friktionskupplungen anzutreiben oder Reibantriebe zu verwenden. Mit Hilfe dieser Berührungsapparate wird nur ein unbefriedigendes Ergebnis erzielt. Einmal können diese Friktionsantriebe nur ungenau eingestellt werden. Ihre Justierbarkeit ist sehr gering. Viel wesentlicher ist jedoch die Notwendigkeit, die Antriebe jeweils auf die Verhältnisse einer jeden Antriebswalze bzw. auf die besondere Art der Warenbehandlung gesondert einzustellen. Dies kann nur ein Fachmann durchführen, und auch der nur ungenügend, da Fehlerquellen nicht zu verrneiden sind.It is known from DE-A-1474969 to solve this problem individually, e.g. B. to drive electrically driven deflection rollers via manually adjustable friction clutches or to use friction drives. With the help of these touch devices only an unsatisfactory result is achieved. On the one hand, these friction drives can only be set inaccurately. Their adjustability is very low. However, it is much more important to adjust the drives to the conditions of each drive roller or to the special type of goods handling. This can only be done by a specialist, and even insufficiently, since sources of error cannot be eliminated.

Es ist weiterhin bekannt, die einzelnen Umlenkwalzen mittels eines Motors mit konstantem Drehmoment, wie z. B. Ölmotor, anzutreiben. Bei dieser Lösung ist der Antriebsaufwand jedoch sehr groß.It is also known that the individual deflecting rollers by means of a constant torque motor, such as. B. oil motor to drive. With this solution, however, the drive effort is very large.

Durch die DE-A-25 51 084 ist es schließlich bekannt, daß der Druckzylinder der Spannungsregeleinrichtung, wie Tänzerwalze, mit einem vordruckabhängigen Ventil verbunden ist, das über Stellglieder die festgestellten Druckwerte zum direkten Antrieb der Umlenkwalzen weitergibt. Diese Lösung vereinfacht den gewünschten Antrieb der Umlenkwalzen in Abhängigkeit der gewünschten Warengeschwindigkeit oder des jeweils zu behandelnden Textilgutes. Nach wie vor ist jedoch das Problem ungelöst, wie die Antriebe der einzelnen Umlenkwalzen gesteuert werden in Abhängigkeit des dort speziell herrschenden Warenzuges.From DE-A-25 51 084 it is finally known that the pressure cylinder of the voltage regulating device, such as a dancer roller, is connected to a pressure-dependent valve which passes on the actuators the determined pressure values for the direct drive of the deflection rollers. This solution simplifies the desired drive of the deflection rollers depending on the desired fabric speed or the textile goods to be treated in each case. However, the problem of how the drives of the individual deflecting rollers are controlled depending on the particular goods train there is still unsolved.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung anfangs genannter Art derart weiterzuentwickeln, daß die innerhalb der Vorrichtung mit einem direkten Antrieb versehenen Umlenkwalzen differenziert angetrieben werden, und zwar im Vergleich zu der dort herrschenden Warenspannung mit dem Ziel, daß an jeder Umlenkwalze durch Ansteuerung eines exakt gleichen Drehmoments die an den jeweiligen Umlenkwalzen entstehenden zusätzlichen Längszugkräfte, infolge eines sich einstellenden Schrumpfvorganges, der jeweils sich ändernden Reibwerte oder des aufgenommenen Schleppwassers usw., nunmehr wieder bis zum Wert « Null aufgehoben werden.The invention has for its object to further develop a device of the type mentioned in such a way that the deflection rollers provided with a direct drive within the device are driven differentially, in comparison to the product tension prevailing there with the aim that at each deflection roller by actuation of a exactly the same torque, the additional longitudinal tensile forces that arise on the respective deflection rollers, as a result of a shrinking process occurring, the respectively changing coefficients of friction or the absorbed drag water, etc., are now canceled out again to the value “zero”.

Zur Lösung der gestellten Aufgabe sieht die Erfindung vor, daß der elektrische Antrieb zumindest von zweien der Umlenkwalzen mit je einer Kraftmeßeinrichtung elektrisch verbunden ist, deren Meßwerte in einem Differenzverstärker verglichen und dort in ein positives oder negatives Steuersignal zum Korrigieren des tatsächlichen Drehmomentes umgewandelt werden. Auf diese Weise ist ein exakter Vergleich des tatsächlich herrschenden Drehmomentes an den hintereinander geschalteten, angetriebenen Umlenkwalzen - meist die der oberen Reihe - möglich, und der Vergleichswert kann sogleich zur Korrektur des notwendigen Drehmomentes verwendet werden.To achieve the object, the invention provides that the electric drive is electrically connected to at least two of the deflecting rollers, each with a force measuring device, the measured values of which are compared in a differential amplifier and converted there into a positive or negative control signal for correcting the actual torque. In this way, an exact comparison of the actually prevailing torque on the series-connected, driven deflection rollers - usually that of the upper row - is possible, and the comparison value can be used immediately to correct the necessary torque.

Im allgemeinen genügt es, wenn die erste und letzte angetriebene Umlenkwalze dieser Behandlungsvorrichtung mit den Kraftmeßeinrichtungen versehen sind. Selbstverständlich ist auch eine Lösung denkbar, wo das Gewicht der Tänzerwalze, die ja die Spannung im Textilgut durch ihr aktives Gewicht vorgibt und auch eine Umlenkwalze ist, gemessen und zur Justierung des Drehmomentes der Umlenkwalzenantriebe innerhalb der Behandlungsvorrichtung verwendet wird, oder wo mehr als nur zwei, ev. alle angetriebenen Umlenkwalzen, in ihrem Antriebswert miteinander verglichen und gesteuert werden.In general, it is sufficient if the first and last driven deflecting roller of this treatment device with the force measuring devices are provided. Of course, a solution is also conceivable where the weight of the dancer roller, which determines the tension in the textile material due to its active weight and is also a deflection roller, is measured and used to adjust the torque of the deflection roller drives within the treatment device, or where more than just two , possibly all driven deflection rollers, are compared and controlled in terms of their drive value.

Das Solldrehmoment zum Antrieb der Umlenkwalzen wird zweckmäßigerweise durch das aktive Gewicht der Tänzerwalze od. dgl. bestimmt.The setpoint torque for driving the deflection rollers is expediently determined by the active weight of the dancer roller or the like.

In der Zeichnung ist ein Ausführungsbeispiel der Vorrichtung nach der Erfindung dargestellt. Es zeigen :

  • Figur 1 einen Schnitt längs einer Rollenkufe mit vor- und nachgeordnetem Preßwalzenpaar.
  • Figur 2 eine Umlenkwalze der oberen und unteren Reihe mit den an diesen vorhandenen Kräften.
  • Figur 3 eine elektrische Schaltung für die Drehmomentsteuerung von zwei Walzenantrieben und
  • Figur 4 einen Schnitt quer durch die Vorrichtung nach Figur 1.
In the drawing, an embodiment of the device according to the invention is shown. Show it :
  • Figure 1 shows a section along a roller skid with upstream and downstream pair of press rolls.
  • Figure 2 shows a deflection roller of the upper and lower rows with the forces present on them.
  • 3 shows an electrical circuit for the torque control of two roller drives and
  • FIG. 4 shows a section across the device according to FIG. 1.

Die Erfindung wird anhand eines Ausführungsbeispiels an einer Naßbehandlungsvorrichtung erläutert. Sie besteht aus einem rundum geschlossenen Gehäuse 1 mit an den Stirnseiten vorgesehenem Ein- und Auslauf, in dem in zwei Reihen Umlenkwalzen 2, 2' zum mäanderförmigen Transport eines Textilgutes 3 drehbar gelagert sind. Die Umlenkwalzen 2' der unteren Reihe drehen sich innerhalb einer Flüssigkeit mit einem Niveau 4. Sie sind nicht angetrieben, während die Walzen 2 der oberen Reihe jeweils einzeln elektrisch angetrieben sind. Am Ende der Behandlungsvorrichtung ist ein Quetschwalzenpaar 5 angeordnet, das für den gleichmäßigen Transport des Textilgutes 3 auf dieses einen gewissen Längszug ausübt. Die Transportgeschwindigkeit, die Umdrehungsgeschwindigkeit der Preßwalzen 5 bestimmt die der Vorrichtung vorgeordnete Tänzerwalze 6, die über ein Potentiometer 7 auf den Preßwalzenantrieb wirkt. Die Tänzerwalze 6 ist durch einen Druckzylinder 8 pneumatisch oder hydraulisch belastet. Es ist jedoch auch möglich, hier eine elektrische Spannungsregeleinrichtung anzuordnen. Entsprechend des hier auf die Ware wirkenden Längszuges ist das Solldrehmoment an den Walzenantrieben 10 festgelegt. Dieser Tänzerwalze ist ein weiteres Preßwalzenpaar 9 vorgeordnet, das im Grunde genommen den vorhergehenden, nicht dargestellten Maschinenteilen zuzuordnen ist, zwischen denen jedoch durch ihren jeweiligen Gleichstromantrieb die Transportgeschwindigkeit des Textilgutes 3 gesteuert wird.The invention is explained using an exemplary embodiment on a wet treatment device. It consists of a completely closed housing 1 with an inlet and outlet provided on the end faces, in which deflection rollers 2, 2 'are rotatably mounted in two rows for the meandering transport of a textile material 3. The deflection rollers 2 'of the lower row rotate within a liquid with a level 4. They are not driven, while the rollers 2 of the upper row are each individually electrically driven. At the end of the treatment device, a pair of squeeze rollers 5 is arranged, which exerts a certain longitudinal tension on the textile goods 3 for the uniform transport thereof. The transport speed, the speed of rotation of the press rolls 5 determines the dancer roll 6 arranged upstream of the device, which acts on the press roll drive via a potentiometer 7. The dancer roller 6 is pneumatically or hydraulically loaded by a pressure cylinder 8. However, it is also possible to arrange an electrical voltage regulating device here. In accordance with the longitudinal tension acting on the goods here, the setpoint torque is fixed on the roller drives 10. This dancer roll is preceded by a further pair of press rolls 9, which basically can be assigned to the preceding machine parts, not shown, between which, however, the transport speed of the textile goods 3 is controlled by their respective direct current drive.

An den in der oberen und unteren Reihe angeordneten Umlenkwalzen 2, 2' wirken mehrere Kräfte, die im einzelnen in Figur 2 dargestellt sind. Zunächst ist da einmal die Bahnzugskraft S zu nennen, die durch den Transport des Textilgutes durch die Behandlungsvorrichtung von den Preßwalzen 5, 9 bestimmt ist. Bezüglich der Walze 2 entspricht dieser Bahnzugskraft S auf der anderen Seite der Walze die Kraft S'. An der Walze 2, die mit der Umfangskraft Ff.L angetrieben umläuft, wirkt entgegen der Umfangskraft der Reibungswiderstand W und lotrecht nach unten das Walzengewicht GW.A plurality of forces act on the deflecting rollers 2, 2 'arranged in the upper and lower rows, which are shown in detail in FIG. First of all, there is the web tension S that is determined by the transport of the textile material through the treatment device from the press rolls 5, 9. With respect to the roller 2, this web tensile force S on the other side of the roller corresponds to the force S '. On the roller 2, which is driven by the circumferential force Ff.L, the frictional resistance W acts counter to the circumferential force and the roller weight G W acts vertically downwards.

Weiterhin besteht bei der von der Walze 2' bis zur Walze 2 aufwärts laufenden Warenbahn eine Kraft Gwasser, die von dem Schleppwasser bestimmt ist. Die Menge des von dem Textilgut mitgenommenen Wassers ist von der Transportgeschwindigkeit des Textilgutes abhängig. An der unteren nicht angetriebenen Umlenkwalze 2' wirkt - neben den Bahnzugskräften S und S' - ebenfalls die entgegen der Transportrichtung gerichtete Widerstandskraft aufgrund der Reibung in Dichtungen und Lager und das Gewicht der Walze. Eine gleichbleibende Längsspannung innerhalb der Warenbahn zwischen einer Stelle vor der oberen Umlenkwalze 2 und hinter der Umlenkwalze, also die Bahnzugskräfte S und S', existiert nur dann, wenn diese beiden entgegengesetzt gerichteten Kräfte gleich groß sind. Um dies zu erreichen, muß der Antrieb 10 der Umlenkwalze 2 mit einem festzulegenden Drehmoment umlaufen.Furthermore, there is a force G water in the web running from the roller 2 'to the roller 2, which is determined by the drag water . The amount of water entrained by the textile goods depends on the transport speed of the textile goods. The lower non-driven deflecting roller 2 '- in addition to the web tensile forces S and S' - also acts against the direction of resistance due to the friction in seals and bearings and the weight of the roller. A constant longitudinal tension within the web between a point in front of the upper deflection roller 2 and behind the deflection roller, that is to say the web tensile forces S and S ', only exists if these two oppositely directed forces are equal. In order to achieve this, the drive 10 of the deflection roller 2 must rotate with a torque to be determined.

Die Umlenkwalzen müssen mit einer bestimmten Größe eines Drehmomentes angetrieben werden. Um diese ansteuern zu können dienen Kraftmeßdosen M1 und M2, über die die erste und letzte Umlenkrolle an ihrer Lagerwelle gegenüber dem Gehäuse der Vorrichtung abgestützt sind. Diese elektrischen Einheiten messen die Bahnzugskräfte FN an den zugeordneten Umlenkwalzen 2 und geben sie gemäß Figur 3 an einen Differenzverstärker weiter, der sie zu einem Steuersignal umwandelt: Je nach Vorzeichen des resultierenden, zur Drehmomentsteuerung verwendeten Signals ändert sich dann das Drehmoment der Umlenkwalzenantriebe. Die optimale Einstellung ist dann erreicht, wenn die beiden Kraftmeßdosen M1 und M2 mit den gleichen Kräften FN beaufschlagt werden.The deflecting rollers must be driven with a certain size of a torque. In order to be able to control them, load cells M 1 and M 2 are used , by means of which the first and last deflection roller are supported on their bearing shaft in relation to the housing of the device. These electrical units measure the web tensile forces F N at the assigned deflecting rollers 2 and pass them on according to FIG. 3 to a differential amplifier, which converts them into a control signal: depending on the sign of the resulting signal used for torque control, the torque of the deflecting roller drives then changes. The optimum setting is achieved when the two load cells M 1 and M 2 are subjected to the same forces F N.

Statt der ersten Umlenkwalze (2, M1) kann auch die Tänzerwalze 6 zur Justierung des Drehmomentes an der letzten Umlenkwalze (M2) verwendet werden, da ja diese aufgrund ihres Gewichtes bzw. aufgrund des durch sie im Textilgut bewirkten Längszuges, das wünschenswerte Solldrehmoment vorgibt. Es kann also Mi entfallen und M3 mit M2 zusammenarbeiten.Instead of the first deflecting roller (2, M 1 ), the dancer roller 6 can also be used to adjust the torque on the last deflecting roller (M 2 ), since this is the desirable target torque due to its weight or due to the longitudinal tension it causes in the textile material pretends. M i can therefore be omitted and M 3 can work together with M 2 .

In Figur 4 ist der Übersichtlichkeit halber die Vorrichtung noch einmal im Querschnitt dargestellt, mit der oberen angetriebenen Umlenkwalze 2 und der unteren lose-umlaufenden Umlenkwalze 2'.For the sake of clarity, the device is shown again in cross section in FIG. 4, with the upper driven deflecting roller 2 and the lower loose-rotating deflecting roller 2 '.

Für den Antrieb der oberen Umlenkwalze 2 sorgt der Elektromotor 10, und für den tatsächlich an dieser Umlenkwalze angreifenden Bahnlängszug dienen die Kraftmeßdosen M1 bzw. M2 (oder M3), die auf der anderen Längsseite der Vorrichtung der jeweiligen Welle zugeordnet sind.The electric motor 10 drives the upper deflection roller 2, and the load cells M 1 and M 2 (or M 3 ), which are assigned to the respective shaft on the other longitudinal side of the device, are used for the longitudinal traction train which actually acts on this deflection roller.

Claims (4)

1. Apparatus for the continuous treatment of endless textile material, such as fabric webs, for example, having a plurality of guide rollers (2, 2') for the meander-like transport of the textile material, which rollers are rotatably mounted in a housing (1) and are disposed in series with one another in two rows, some of the guide rollers being individually electrically driven, and a pair of pressure rollers (5) for the transport of the textile material, such pressure rollers being situated at the input and/or output end and being controlled in respect of the circumferential speed by a tension regulating means, such as a compensating roller (6), which is loaded at a predetermined pressure pneumatically or hydraulically, via a hydraulic cylinder (8), or electrically, characterised in that at least two of the guide rollers (2, 2', 6) are each provided with a force measuring device (Mi, M2, M3), such devices being disposed between the shafts of the guide rollers and the housing (1) to measure the web tensile forces (FN), and the measure values of which devices are compared in a differential amplifier and converted there into a positive or negative control signal for correcting the actual torque of the associated driving means (10) of the guide rollers (2, 2', 6), so that at least two of the force measuring devices (Mi, M2, M3) are loaded with the same web tensile forces (FN) in an optimum manner.
2. Apparatus according to claim 1, characterised in that the first and final driven guide rollers (2) of this treatment apparatus are each provided with a force measuring device (Mi, M2).
3. Apparatus according to claim 1, characterised in that the compensating roller (6) and the final driven guide roller (2) of this treatment apparatus are each provided with a force measuring device (M3, M2).
4. Apparatus according to claim 1, 2 or 3, characterised in that the desired torque for driving the guide rollers (2) is determined by the active weight (8) of the compensating roller (6) or the like.
EP85103486A 1984-05-25 1985-03-25 Device for the continual treatment of endless textile fabric material Expired EP0163040B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3419487A DE3419487A1 (en) 1984-05-25 1984-05-25 DEVICE FOR CONTINUOUS TREATMENT OF ENDLESS TEXTILE GOODS
DE3419487 1984-05-25

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EP0163040A1 EP0163040A1 (en) 1985-12-04
EP0163040B1 true EP0163040B1 (en) 1988-07-27

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EP85103486A Expired EP0163040B1 (en) 1984-05-25 1985-03-25 Device for the continual treatment of endless textile fabric material

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US (1) US4645109A (en)
EP (1) EP0163040B1 (en)
DE (2) DE3419487A1 (en)

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Also Published As

Publication number Publication date
DE3419487A1 (en) 1985-11-28
US4645109A (en) 1987-02-24
DE3563995D1 (en) 1988-09-01
EP0163040A1 (en) 1985-12-04

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