EP0224683B1 - Method for regulating web tension in a raising machine, and raising machine - Google Patents

Method for regulating web tension in a raising machine, and raising machine Download PDF

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Publication number
EP0224683B1
EP0224683B1 EP86114009A EP86114009A EP0224683B1 EP 0224683 B1 EP0224683 B1 EP 0224683B1 EP 86114009 A EP86114009 A EP 86114009A EP 86114009 A EP86114009 A EP 86114009A EP 0224683 B1 EP0224683 B1 EP 0224683B1
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EP
European Patent Office
Prior art keywords
tension
roller
fabric
raising
rollers
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Expired - Lifetime
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EP86114009A
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German (de)
French (fr)
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EP0224683A1 (en
Inventor
Karl Heinz Lüngers
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Johannes Menschner Maschinenfabrik GmbH and Co KG
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Johannes Menschner Maschinenfabrik GmbH and Co KG
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Priority to AT86114009T priority Critical patent/ATE74385T1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • the invention relates to a method for monitoring and / or regulating the fabric tension of a fabric web processed on a reel-up machine according to the preamble of claim 1.
  • the invention further relates to a reel-up machine according to the preamble of claim 6.
  • the brushing rollers arranged on the jacket of the reel are designed as coating and counter-coating rollers with wire card clothing.
  • the wires of the line rollers generally point in the direction in which the goods travel over the reel, and the wires of the counter-line rollers point in the opposite direction.
  • the goods are effectively roughened by an alternating arrangement of line and counter-roller, ie the fibers are lifted off the base of the fabric.
  • a relaxation of the goods occurs between a line and a counter-roller and tension of the goods between a counter-line and a line roller.
  • Optimal processing of goods on reel-to-reel machines therefore depends on the amount of line and counter-stroke energy as well as the overall tension on the reel. Even for trained and experienced specialists, it is difficult to always find the optimal processing parameters, especially when goods with different properties are to be processed one after the other.
  • DE-AS 11 06 723 discloses a method for regulating the fabric tension of a fabric web processed on a reel-up machine, in which the fabric is drawn in by a driven infeed roller, on the reel of line and / or counter-line rollers with line and / or or counter-stroke energy and is drawn off by a take-off roller which is driven independently of the single roll.
  • the tension of the material web is measured by means of one or more tension sensors, compared with an adjustable target value and, in the event of a deviation from the target value, automatically reset to the predetermined target value. It cannot therefore be ruled out that the goods are subjected to the wrong stroke and / or counter stroke energy.
  • the object of the invention is to enable and maintain a goods-dependent tension balance on the entire reel.
  • a specific target tension value at the goods inlet and at the goods outlet of the roughing machine is set for a specific product, ensuring an optimal product tension distribution on the drum.
  • the fabric tension is measured and checked on the inlet and outlet side, preferably continuously, and the tension values are compared with one another.
  • the respectively deviating voltage is automatically reset to the predetermined target value.
  • this is done by changing the speed of difference between the drawing-in and drawing-off rollers of the roughing machine and / or by changing the ratio of coating energy to counter-coating energy.
  • independent drives are provided for the feed roller, the take-off roller, the reel, the coating rollers and the counter-coating rollers.
  • Expediently electronically variable-speed DC motors are used for these drives.
  • the method according to the invention enables the processing of goods with a wide variety of properties in immediate succession without manual, experience-based setting work on the machine being necessary, since all settings are automated.
  • the reel-up machine has a measuring device at the goods inlet and at the goods outlet measuring the fabric tension. These measuring devices are connected to an electronic process computer which compares the existing product tension conditions with one another and automatically sets the required compensation voltage on the basis of this comparison.
  • a reel-up machine consists of a reel 1, the casing of which is formed in a manner known per se from conventional-type roughening rollers, namely from coating rollers S and counter-coating rollers G.
  • the line rollers S and the counter-line rollers G apply a line and / or counter-line energy to a product 2 to be roughened, the course of which is shown by a chain line.
  • a driven feed roller 4 is arranged at the goods inlet 3 and a likewise driven take-off roller 6 is arranged at the goods outlet 5.
  • a measuring device measuring the tension of the goods is arranged according to the invention at the goods inlet 3 and at the goods outlet 5.
  • the main elements of these measuring devices are two dancer rollers 7, 8 which are arranged between the feed roller 4 and the drum 1 on the one hand and between the drum 1 and the take-off roller 6 on the other hand.
  • the dancer rollers 7, 8 are looped around by the goods 2.
  • the dancer rollers 7, 8 are movable in a direction perpendicular to their axes of rotation and in the direction of the loops of the web 2 they form, in particular by means of pivot levers 13, 14. Two lateral pivot levers are provided for each dancer roller 7, 8.
  • any change in the fabric tension is measured both at the goods inlet 3 and at the goods outlet 5 on the basis of the position of the dancer rollers 7, 8, for which purpose each dancer roller 7, 8 is connected according to the invention to a linear actual value sensor 15, 16 that detects its position.
  • These actual value transmitters 15, 16 can be, for example, conventional immersion potentiometers or similar measuring devices which convert a linear change in position into electrical output signals.
  • the dancer rollers 7, 8 act against at least one pressure element 17, 18 that generates a preselectable preload. 2, two pressure elements 17 a, 17 b; 18 a, 18 b provided. In this way, a target product tension can be preselected.
  • the pressure elements 17, 18 are preferably designed as pneumatic piston-cylinder units, the amount of the preload being adjustable in the range from 0 to 300 N.
  • the dancer rollers 7, 8 thus do not actively provide for a fabric tension, but act as passive measuring devices moved by the fabric by tension or relaxation.
  • a separate drive in particular in each case a speed-controllable direct current motor 21, 22, 23, 24, 25, is provided for driving the drum 1, the line rollers S, the counter-coating rollers G, the feed roller 4 and the take-off roller 6.
  • a speed-controllable direct current motor 21, 22, 23, 24, 25 is provided for driving the drum 1, the line rollers S, the counter-coating rollers G, the feed roller 4 and the take-off roller 6.
  • the linear actual value transmitters 15, 16, the pressure elements 17, 18 and the motors 21 to 25 are connected to an electronic process computer 26.
  • An input device 27 is connected to the process computer 26 for inputting target values for adaptation to different materials.
  • the electronic process computer 26 receives from the linear actual value transmitters 15, 16 electrical actual value signals which are proportional to the product tension present in each case.
  • the computer 26 compares these values and uses this to calculate the voltage compensation required in each case, which is subsequently set by optimal speed adjustment of all individual drives.
  • Fig. 3 it is shown that the fabric tension at both the goods inlet 3 and at the goods outlet 5 is too low, so that both dancer rollers 7, 8 by the pressure elements under the preselected prestress 17, 18 have extended the goods loop.
  • the positions of the dancer rollers 7, 8 shown are passed on to the process computer by the linear actual value transmitters (not shown). This is programmed so that in this case it increases the speed of the take-off roller 6, whereby the goods as a whole are stretched.
  • Fig. 5 shows a state in which the coating energy is too high in relation to the counter-coating energy, since the goods 2 are transported too strongly by the drum 1, so that the goods are stretched at the goods inlet 3 by the high tension of the drum 1 and at the goods outlet 5 is relaxed.
  • the computer causes a reduction in the stroke energy, i.e. a speed reduction of the drive motor 22 of the line rollers S.
  • the invention is in no way limited to the exemplary embodiment shown. So it is entirely within the scope of the invention to measure the tension of the web with equivalent means, such as. B. with strain gauges, hydraulic or pneumatic pressure measurements or the like.
  • the dancer rollers 7, 8 can also be linear, ie without a pivot lever, be movably stored. It is also possible to dispense entirely with dancer rollers and to measure the fabric tension only by suitable means, for example pressure gauges, in the deflection rollers 11, 12.
  • suitable means for example pressure gauges, in the deflection rollers 11, 12.
  • the training with the dancer rollers 7, 8 has the advantage that a pretension can be adjusted to adapt to different materials to be processed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

This invention concerns a process for monitoring and/or regulating cloth tension of a length of cloth processed on a cylinder napping machine, whereby the napping machine has pile rollers and/or counterpile rollers on the jacket of the cylinder which subject the cloth to pile-raising energy and/or counterpile-raising energy, and a certain set point tension value which assures optimum distribution of cloth tension on the cylinder is set at the cloth inlet and the cloth delivery end of the napping machine, during operation the cloth tension is measured preferably continuously and controlled at the inlet end and the outlet end and the tension values are compared, and in the event of a deviation from the predetermined tension values the respective deviating tension is automatically adjusted again to the predetermined set point value. This invention also concerns a cylinder napping machine with pile rollers and/or counterpile rollers mounted on the jacket of the cylinder, a feed roll at the cloth feed and a delivery roll at the cloth delivery end, and a measurement unit for measuring the cloth tension is provided at the cloth feed and another unit is provided at the cloth delivery end.

Description

Die Erfindung betrifft ein Verfahren zur Überwachung und/oder Regelung der Warenspannung einer auf einer Tambour-Rauhmaschine verarbeiteten Warenbahn gemäß dem Oberbegriff des Anspruches 1. Die Erfindung betrifft ferner eine Tambour-Rauhmaschine gemäß dem Überbegriff des Anspruches 6.The invention relates to a method for monitoring and / or regulating the fabric tension of a fabric web processed on a reel-up machine according to the preamble of claim 1. The invention further relates to a reel-up machine according to the preamble of claim 6.

Zum wirkungsvollen Aufrauhen von Waren, wie z. B. gewebten oder gewirkten Stoffen, werden in der Regel doppelt wirkende Rauhmaschinen verwendet, deren auf dem Mantel des Tambours angeordnete Rauhwalzen als Strich- und Gegenstrichwalzen mit Drahtkrempelbekleidungen ausgebildet sind. Die Drähte dar Strichwalzen weisen allgemein in die Richtung, in welcher die Ware über den Tambour wandert, und die Drähte der Gegenstrichwalzen weisen in die entgegengesetzte Richtung. Durch eine abwechselnde Anordnung von Strich- und Gegenstrichwalzan wird die Ware wirkungsvoll aufgerauht, d.h. die Stoffasern werden von dem Stoffgrund abgehoben. Dabei kommt es aber in Warenvorschubrichtung gesehen jeweils zwischen einer Strich- und einer Gegenstrichwalze zu einer Entspannung der Ware und zwischen einer Gegenstrich- und einer Strichwalze zu einer Spannung der Ware. Bei bekannten Rauhmaschinen ist es äußerst schwierig, das richtige Verhältnis von Strich- zu Gegenstrichenergie zu finden. Entweder wird die Ware nicht intensiv genug gerauht, so daß mehrere Verarbeitungspassagen erforderlich sind, um die gewünschte Rauhwirkung zu erzielen. Andernfalls kann ein großes Verhältnis von Gegenstrich- zu Strichenergie zu einer ungewollt starken Rauhung, einer Beschädigung oder zum Zerreißen der ware führen. Weiterhin hat aber auch die über den gesamten Tambour vorliegende Warenspannung einen Einfluß auf die Strich- und Gegenstrichenergie, da bei zu geringer Spannung die Ware praktisch berührungslos über die Rauhwalzen transportiert würde, bei zu hoher Spannung jedoch zu stark beansprucht würde. Insbesondere die Verarbeitung von stark dehnbaren Waren ist mit bekannten Rauhmaschinen äußerst problematisch, da derartige Waren bei der Verarbeitung eine Längung von mehr als 100% erfahren können. Eine optimale Warenverarbeitung auf Tambour-Rauhmaschinen hängt somit von der Höhe der Strich- und Gegenstrichenergie sowie von der Gesamtwarenspannung auf dem Tambour ab. Selbst für geschultes und erfahrenes Fachpersonal ist es aber schwierig, stets die optimalen Verarbeitungsparameter zu finden, insbesondere wenn Waren mit unterschiedlichen Eigenschaften nacheinander verarbeitet werden sollen.For effective roughening of goods such as B. woven or knitted fabrics, double-acting brushing machines are generally used, the brushing rollers arranged on the jacket of the reel are designed as coating and counter-coating rollers with wire card clothing. The wires of the line rollers generally point in the direction in which the goods travel over the reel, and the wires of the counter-line rollers point in the opposite direction. The goods are effectively roughened by an alternating arrangement of line and counter-roller, ie the fibers are lifted off the base of the fabric. However, seen in the direction of advance of the goods, a relaxation of the goods occurs between a line and a counter-roller and tension of the goods between a counter-line and a line roller. In known napping machines, it is extremely difficult to find the right ratio of stroke to counter stroke energy. Either the goods are not roughened sufficiently, so that several processing passages are required to achieve the desired roughening effect to achieve. Otherwise, a large ratio of counter stroke to stroke energy can lead to unintended roughening, damage or tearing of the goods. Furthermore, the fabric tension present over the entire reel also has an influence on the line and counter-stroke energy, since if the tension is too low, the fabric would be transported practically without contact via the roughing rollers, but would be stressed too much if the tension was too high. In particular, the processing of highly stretchable goods is extremely problematic with known roughing machines, since such goods can experience an elongation of more than 100% during processing. Optimal processing of goods on reel-to-reel machines therefore depends on the amount of line and counter-stroke energy as well as the overall tension on the reel. Even for trained and experienced specialists, it is difficult to always find the optimal processing parameters, especially when goods with different properties are to be processed one after the other.

Aus der DE-AS 11 06 723 ist ein Verfahren zur Regelung dar Warenspannung einer auf einer Tambour-Rauhmaschine verarbeiteten Warenbahn bekannt, bei dem die Ware von einer angetriebenen Einzugswalze eingezogen, auf dem Tambour von Strich- und/oder Gegenstrichwalzen mit Strich-  und/oder Gegenstrichenergie beaufschlagt und von einer unabhängig von der Einzuswalze angetriebenen Abzugswalze abgezogen wird. Am Einlauf und/oder Auslauf wird die Spannung der Warenbahn mittels eines oder mehrere Spannungsfühler gemessen, mit einem einstellbaren Sollwert verglichen und bei Abweichung vom Sollwert automatisch wieder auf den vorbestimmten Sollwert eingestellt. Es kann daher nicht ausgeschlossen werden, daß dabei die Ware mit einer falschen Strich- und/oder Gegenstrichenergie beaufschlagt wird.DE-AS 11 06 723 discloses a method for regulating the fabric tension of a fabric web processed on a reel-up machine, in which the fabric is drawn in by a driven infeed roller, on the reel of line and / or counter-line rollers with line and / or or counter-stroke energy and is drawn off by a take-off roller which is driven independently of the single roll. At the inlet and / or outlet, the tension of the material web is measured by means of one or more tension sensors, compared with an adjustable target value and, in the event of a deviation from the target value, automatically reset to the predetermined target value. It cannot therefore be ruled out that the goods are subjected to the wrong stroke and / or counter stroke energy.

Aufgabe der Erfindung ist, eine warenabhängige Spannungsbalance auf dem gesamten Tambour zu ermöglichen und zu erhalten.The object of the invention is to enable and maintain a goods-dependent tension balance on the entire reel.

Diese Aufgabe wird durch die Merkmale des Anspruches 1 und des Anspruches 6 gelöst. Vorteilhafte Weiterbildungen der Erfindung werden in den von diesen Ansprüchen abhängigen Unteransprüchen gekennzeichnet.This object is solved by the features of claim 1 and claim 6. Advantageous developments of the invention are characterized in the dependent claims dependent on these claims.

Nach dem erfindungsgemäßen Verfahren wird für eine bestimmte Ware jeweils ein bestimmter, eine optimale Warenspannungsverteilung auf dem Tambour gewährleistender Soll-Spannungswert am Wareneinlauf und am Warenauslauf der Rauhmaschine eingestellt. Während des Betriebes werden die Warenspannung einlauf- und auslaufseitig, vorzugsweise kontinuierlich gemessen, kontrolliert und die Spannungswerte miteinander verglichen. Im Falle einer Abweichung von den vorbestimmten Spannungen wird die jeweils abweichende Spannung automatisch wieder auf den vorbestimmten Sollwert eingestellt. Die Erfindung beruht somit auf der Erkenntnis, daß ausschließlich aus dem Vergleich der beiden Warenspannungszustände vor und nach dem Tambour eindeutige Aussagen über alle für die Verarbeitung wichtigen Einzelparameter gemacht werden können, so daß die jeweils abweichende Spannung vorzugsweise automatisch durch einen elektronischen Prozeßrechner auf den Sollwert eingestellt werden kann. Dies geschieht erfindungsgemäß durch Änderung der Differenzgeschwindigkeit zwischen Einzugs- und Abzugswalze der Rauhmaschine und/oder durch Änderung des Verhältnisses von Strichenergie zu Gegenstrichenergie. Zur Steuerung der Tambour-Rauhmaschine ist es daher vorteilhaft, wenn voneinander unabhängige Antriebe für die Einzugswalze, die Abzugswalze, den Tambour, die Strichwalzen und die Gegenstrichwalzen vorgesehen sind. Zweckmäßigerweise werden für diese Antriebe jeweils elektronisch drehzahlregelbare Gleichstrommotoren verwendet.According to the method according to the invention, a specific target tension value at the goods inlet and at the goods outlet of the roughing machine is set for a specific product, ensuring an optimal product tension distribution on the drum. During operation, the fabric tension is measured and checked on the inlet and outlet side, preferably continuously, and the tension values are compared with one another. In the event of a deviation from the predetermined voltages, the respectively deviating voltage is automatically reset to the predetermined target value. The invention is thus based on the knowledge that only from the comparison of the two product tension states before and after the reel, clear statements can be made about all the individual parameters that are important for processing, so that the respective deviating tension is preferably set automatically to the desired value by an electronic process computer can be. According to the invention, this is done by changing the speed of difference between the drawing-in and drawing-off rollers of the roughing machine and / or by changing the ratio of coating energy to counter-coating energy. To control the reel-up machine, it is therefore advantageous if independent drives are provided for the feed roller, the take-off roller, the reel, the coating rollers and the counter-coating rollers. Expediently electronically variable-speed DC motors are used for these drives.

Das erfindungsgemäße Verfahren ermöglicht die Verarbeitung von Waren mit den unterschiedlichsten Eigenschaften unmittelbar hintereinander, ohne daß manuelle, auf Erfahrung beruhende Einstellarbeiten an der Maschine erforderlich wären, da alle Einstellungen automatisiert sind.The method according to the invention enables the processing of goods with a wide variety of properties in immediate succession without manual, experience-based setting work on the machine being necessary, since all settings are automated.

Die erfindungsgemäße Tambour-Rauhmaschine verfügt über jeweils eine die Warenspannung messende Meßeinrichtung am Wareneinlauf und am Warenauslauf. Diese Meßeinrichtungen sind mit einem elektronischen Prozeßrechner verbunden, der die jeweils vorliegenden Warenspannungszustände miteinander vergleicht und auf der Basis dieses Vergleichs automatisch die erforderliche Ausgleichsspannung einstellt.The reel-up machine according to the invention has a measuring device at the goods inlet and at the goods outlet measuring the fabric tension. These measuring devices are connected to an electronic process computer which compares the existing product tension conditions with one another and automatically sets the required compensation voltage on the basis of this comparison.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels einer erfindungsgemäßen Rauhmaschine soll im folgenden die Erfindung näher erläutert werden. Dabei zeigen:

Fig. 1
eine schematische Seitenansicht einer Tambour-Rauhmaschine nach der Erfindung,
Fig. 2
eine schematische Draufsicht der Rauhmaschine nach Fig. 1 unter zusätzlicher schematischer Darstellung der Antriebe und der Steuerung und
Fig. 3 bis 8
schematische Seitenansichten der Rauhmaschine nach Fig. 1 unter Darstellung unterschiedlicher Warenspannungszustände.
The invention will be explained in more detail below with reference to an exemplary embodiment of a roughing machine according to the invention shown in the drawing. Show:
Fig. 1
2 shows a schematic side view of a reel-up machine according to the invention,
Fig. 2
a schematic plan view of the napping machine according to FIG. 1 with an additional schematic representation of the drives and the control and
3 to 8
schematic side views of the napping machine according to FIG. 1, showing different fabric tension conditions.

Eine erfindungsgemäße Tambour-Rauhmaschine besteht aus einem Tambour 1, dessen Mantel in an sich bekannter Weise aus Rauhwalzen üblicher Bauart, und zwar aus Strichwalzen S und Gegenstrichwalzen G gebildet wird. In Abhängigkeit von ihren Umdrehungsgeschwindigkeiten beaufschlagen die Strichwalzen S und die Gegenstrichwalzen G eine aufzurauhende Ware 2, deren Verlauf durch eine Strichpunktlinie dargestellt ist, mit Strich- und/oder Gegenstrichenergie. Am Wareneinlauf 3 ist eine angetriebene Einzugswalze 4 und am Warenauslauf 5 eine ebenfalls angetriebene Abzugswalze 6 angeordnet.A reel-up machine according to the invention consists of a reel 1, the casing of which is formed in a manner known per se from conventional-type roughening rollers, namely from coating rollers S and counter-coating rollers G. Depending on their rotational speeds, the line rollers S and the counter-line rollers G apply a line and / or counter-line energy to a product 2 to be roughened, the course of which is shown by a chain line. A driven feed roller 4 is arranged at the goods inlet 3 and a likewise driven take-off roller 6 is arranged at the goods outlet 5.

Um eine möglichst gleichmäßige Warenspannungsverteilung auf dem Tambour 1 zu erreichen, ist erfindungsgemäß am Wareneinlauf 3 und am Warenauslauf 5 jeweils eine die Warenspannung messende Meßeinrichtung angeordnet. Hauptelemente dieser Meßeinrichtungen sind zwei Tänzerwalzen 7,8, die zwischen der Einzugswalze 4 und dem Tambour 1 einerseits und zwischen dem Tambour 1 und der Abzugswalze 6 andererseits angeordnet sind. Die Tänzerwalzen 7,8 werden von der Ware 2 schlaufenartig umschlungen. Durch die Anordnung jeweils einer Umlenkwalze 11,12 zwischen jeder Tänzerwalze 7,8 und dem Tambour 1 beträgt der Umschlingungswinkel der Warenbahn 2 auf der Einzugswalze 4, der Abzugswalze 6 und den Tänzerwalzen 7,8 jeweils etwa 180 °. Erfindungsgemäß sind die Tänzerwalzen 7,8 in einer zu ihren Drehachsen senkrechten Richtung und in Richtung der von ihnen gebildeten Schlaufen der Warenbahn 2 beweglich, insbesondere mittels Schwenkhebeln 13,14 schwenkbar gelagert. Für jede Tänzerwalze 7,8 sind zwei seitliche Schwenkhebel vorgesehen.In order to achieve a distribution of the tension on the drum 1 that is as uniform as possible, a measuring device measuring the tension of the goods is arranged according to the invention at the goods inlet 3 and at the goods outlet 5. The main elements of these measuring devices are two dancer rollers 7, 8 which are arranged between the feed roller 4 and the drum 1 on the one hand and between the drum 1 and the take-off roller 6 on the other hand. The dancer rollers 7, 8 are looped around by the goods 2. By arranging a deflecting roller 11, 12 between each dancer roller 7,8 and the drum 1, the wrap angle of the web 2 on the feed roller 4, the take-off roller 6 and the dancer rollers 7,8 is each approximately 180 °. According to the invention, the dancer rollers 7, 8 are movable in a direction perpendicular to their axes of rotation and in the direction of the loops of the web 2 they form, in particular by means of pivot levers 13, 14. Two lateral pivot levers are provided for each dancer roller 7, 8.

Durch diese Ausbildung wird jede Änderung der Warenspannung sowohl am Wareneinlauf 3 als auch am Warenauslauf 5 anhand der Stellung der Tänzerwalzen 7,8 gemessen, wozu jede Tänzerwalze 7,8 erfindungsgemäß mit einem ihre Stellung erfassenden linearen Istwertgeber 15,16 verbunden ist. Diese Istwertgeber 15,16 können beispielsweise herkömmliche Tauchpotentiometer oder dergleichen Meßgeräte sein, die eine lineare Positionsänderung in elektrische Ausgangssignale umwandeln. Vorteilhafterweise wirken die Tänzerwalzen 7,8 bei ihrer Bewegung gegen mindestens ein eine vorwählbare Vorspannung erzeugendes Druckelement 17,18. Gemäß Fig. 2 sind für jede Tänzerwalze 7,8 zwei Druckelemente 17 a, 17 b; 18 a, 18 b vorgesehen. Hierdurch kann eine Soll-Warenspannung vorgewählt werden. Die Druckelemente 17, 18 sind vorzugsweise als pneumatische Kolben-Zylinder-Einheiten ausgebildet, wobei die Höhe der Vorspannung im Bereich von 0 bis 300 N einstellbar ist. Die Tänzerwalzen 7,8 sorgen somit nicht aktiv für eine Warenspannung, sondern wirken als passive, von der Ware durch Spannung oder Entspannung bewegte Meßeinrichtungen.With this design, any change in the fabric tension is measured both at the goods inlet 3 and at the goods outlet 5 on the basis of the position of the dancer rollers 7, 8, for which purpose each dancer roller 7, 8 is connected according to the invention to a linear actual value sensor 15, 16 that detects its position. These actual value transmitters 15, 16 can be, for example, conventional immersion potentiometers or similar measuring devices which convert a linear change in position into electrical output signals. Advantageously, the dancer rollers 7, 8 act against at least one pressure element 17, 18 that generates a preselectable preload. 2, two pressure elements 17 a, 17 b; 18 a, 18 b provided. In this way, a target product tension can be preselected. The pressure elements 17, 18 are preferably designed as pneumatic piston-cylinder units, the amount of the preload being adjustable in the range from 0 to 300 N. The dancer rollers 7, 8 thus do not actively provide for a fabric tension, but act as passive measuring devices moved by the fabric by tension or relaxation.

Erfindungsgemäß ist zum Antrieb des Tambours 1, der StrichwalzenS , der Gegenstrichwalzen G, der Einzugswalze 4 und der Abzugswalze 6 jeweils ein separater Antrieb, insbesondere jeweils ein drehzahlregelbarer Gleichstrommotor 21, 22, 23, 24, 25, vorgesehen. Hierdurch kann eine optimale Regelung der Warenspannung durch Einstellung aller Einzelparameter erreicht werden.According to the invention, a separate drive, in particular in each case a speed-controllable direct current motor 21, 22, 23, 24, 25, is provided for driving the drum 1, the line rollers S, the counter-coating rollers G, the feed roller 4 and the take-off roller 6. This enables optimum control of the fabric tension by setting all individual parameters.

Die linearen Istwertgeber 15,16, die Druckelemente 17,18 sowie die Motoren 21 bis 25 sind mit einem elektronischen Prozeßrechner 26 verbunden. Für eine Eingabe von Sollwerten zur Anpassung an verschiedene Materialien ist an den Prozeßrechner 26 eine Eingabevorrichtung 27 angeschlossen.The linear actual value transmitters 15, 16, the pressure elements 17, 18 and the motors 21 to 25 are connected to an electronic process computer 26. An input device 27 is connected to the process computer 26 for inputting target values for adaptation to different materials.

Der elektronische Prozeßrechner 26 erhält von den linearen Istwertgebern 15,16 elektrische Istwertsignale, die proportional zu der jeweils vorliegenden Warenspannung sind. Der Rechner 26 vergleicht diese Werte und errechnet hieraus den jeweils erforderlichen Spannungsausgleich, der nachfolgend durch optimale Drehzahlanpassung aller Einzelantriebe eingestellt wird.The electronic process computer 26 receives from the linear actual value transmitters 15, 16 electrical actual value signals which are proportional to the product tension present in each case. The computer 26 compares these values and uses this to calculate the voltage compensation required in each case, which is subsequently set by optimal speed adjustment of all individual drives.

Die Funktion der erfindungsgemäßen Tambour-Rauhmaschine soll im folgenden unter Bezug auf die in den Fig. 3 bis 8 dargestellten Spannungszustände erläutert werden.The function of the reel-up machine according to the invention will be explained in the following with reference to the voltage states shown in FIGS. 3 to 8.

In Fig. 3 ist dargestellt, daß die Warenspannung sowohl am Wareneinlauf 3 als auch am Warenauslauf 5 zu gering ist, so daß sich beide Tänzerwalzen 7,8 durch die unter der vorgewählten Vorspannung stehenden Druckelemente 17,18 die Warenschlaufe verlängernd bewegt haben. Die dargestellten Stellungen der Tänzerwalzen 7,8 werden von den linearen Istwertgebern (nicht dargestellt) an den Prozeßrechner weitergegeben. Dieser ist so programmiert, daß er in diesem Fall die Geschwindigkeit der Abzugswalze 6 erhöht, wodurch die Ware insgesamt gespannt wird.In Fig. 3 it is shown that the fabric tension at both the goods inlet 3 and at the goods outlet 5 is too low, so that both dancer rollers 7, 8 by the pressure elements under the preselected prestress 17, 18 have extended the goods loop. The positions of the dancer rollers 7, 8 shown are passed on to the process computer by the linear actual value transmitters (not shown). This is programmed so that in this case it increases the speed of the take-off roller 6, whereby the goods as a whole are stretched.

In dem in Fig. 4 dargestellten Zustand ist die Warenspannung insgesamt zu hoch, weshalb der Rechner eine Verminderung der Umdrehungsgeschwindigkeit der Abzugswalze 6 veranlaßt.In the state shown in FIG. 4, the overall fabric tension is too high, which is why the computer causes the speed of rotation of the take-off roller 6 to decrease.

Fig. 5 zeigt einen Zustand, in dem die Strichenergie im Verhältnis zur Gegenstrichenergie zu hoch ist, da die Ware 2 von dem Tambour 1 zu stark transportiert wird, so daß die Ware am Wareneinlauf 3 durch den hohen Zug des Tambours 1 gespannt und am Warenauslauf 5 entspannt wird. Der Rechner veranlaßt in diesem Fall eine Verringerung der Strichenergie, d.h. eine Drehzahlverringerung des Antriebsmotors 22 der Strichwalzen S.Fig. 5 shows a state in which the coating energy is too high in relation to the counter-coating energy, since the goods 2 are transported too strongly by the drum 1, so that the goods are stretched at the goods inlet 3 by the high tension of the drum 1 and at the goods outlet 5 is relaxed. In this case, the computer causes a reduction in the stroke energy, i.e. a speed reduction of the drive motor 22 of the line rollers S.

In Fig. 6 ist dargestellt, daß die Strichenergie im Verhältnis zur Gegenstrichenergie zu gering ist. Die Ware 2 wird von den Gegenstrichwalzen G zu stark in entgegengesetzter Warenvorschubrichtung mit Energie beaufschlagt, so daß die Ware 2 am Wareneinlauf 3 entspannt und am Warenauslauf 5 gespannt wird. Der erforderliche Ausgleich ist in diesem Fall eine Vergrößerung der Strichenergie, d.h. eine Drehzahlerhöhung des Antriebsmotors 22 der Strichwalzen S.6 shows that the stroke energy is too low in relation to the counter stroke energy. The goods 2 are subjected to too much energy by the counter-coating rollers G in the opposite direction of advance of the goods, so that the goods 2 are relaxed at the goods inlet 3 and tensioned at the goods outlet 5. The necessary compensation in this case is an increase in the stroke energy, i.e. an increase in the speed of the drive motor 22 of the line rollers S.

Der Zustand in Fig. 7 zeigt, daß sowohl die Warenspannung zu gering als auch die Strichenergie zu klein ist. Der Rechner wird in diesem Fall eine Erhöhung der Umdrehungsgeschwindigkeit der Abzugswalze 6 über den Motor 25 sowie eine Erhöhung der Strichenergie über Drehzahlsteigerung des Motors 22 veranlassen.The state in Fig. 7 shows that both the fabric tension is too low and the stroke energy is too small. In this case, the computer will cause an increase in the rotational speed of the take-off roller 6 via the motor 25 and an increase in the stroke energy by increasing the speed of the motor 22.

In Fig. 8 ist die Idealstellung der Tänzerwalzen 7,8 dargestellt. Die Differenzgeschwindigkeit zwischen Einzugswalze 4 und Abzugswalze 6 hat die Dehnfähigkeit der Ware 2 entsprechend der vorgewählten Vorspannung der Druckelemente 17,18 ausgeglichen. Die Strichenergie im Verhältnis zur Gegenstrichenergie ist so abgeglichen, daß sich die Warenspannung über dem Tambour 1 absolut gleichmäßig verteilt.8 shows the ideal position of the dancer rolls 7, 8. The difference in speed between the feed roller 4 and the take-off roller 6 has compensated for the extensibility of the goods 2 in accordance with the preselected preload of the pressure elements 17, 18. The coating energy in relation to the counter coating energy is balanced so that the fabric tension is distributed absolutely evenly over the drum 1.

Aufgrund der vorteilhaften Verwendung eines elektronischen Prozeßrechners ist die Regelung der voneinander unabhängigen Antriebe derart schnell, daß die in Fig. 8 dargestellten Idealbedingungen unmittelbar nach Verarbeitungsbeginn bereits vorliegen. Somit dienen die Fig. 3 bis 7 lediglich der Erklärung der Funktion der erfindungsgemäßen Rauhmaschine, wobei die Stellungen der Tänzerwalzen 7,8 der Deutlichkeit halber stark übertrieben dargestellt sind und nicht der Praxis entsprechend.Due to the advantageous use of an electronic process computer, the control of the mutually independent drives is so fast that the ideal conditions shown in FIG. 8 already exist immediately after the start of processing. 3 to 7 are only used to explain the function of the roughening machine according to the invention, the positions of the dancer rollers 7, 8 being shown in a greatly exaggerated manner for the sake of clarity and not in practice.

Die Erfindung ist keineswegs auf das dargestellte Ausführungsbeispiel beschränkt. So liegt es durchaus im Rahmen der Erfindung, die Spannung der Warenbahn mit gleichwirkenden Mitteln zu messen, wie z. B. mit Dehnungsmeßstreifen, hydraulischen oder pneumatischen Druckmessungen oder dergleichen. Weiterhin können die Tänzerwalzen 7,8 auch linear, d.h. ohne Schwenkhebel, beweglich gelagert werden. Es ist auch möglich, ganz auf Tänzerwalzen zu verzichten, und lediglich durch geeignete Mittel, beispielsweise Druckmessern, in den Umlenkwalzen 11, 12, die Warenspannung zu messen. Jedoch hat die Ausbildung mit den Tänzerwalzen 7,8 den Vorteil, daß eine Vorspannung zur Anpassung an verschiedene zu verarbeitende Materialien einstellbar ist.The invention is in no way limited to the exemplary embodiment shown. So it is entirely within the scope of the invention to measure the tension of the web with equivalent means, such as. B. with strain gauges, hydraulic or pneumatic pressure measurements or the like. Furthermore, the dancer rollers 7, 8 can also be linear, ie without a pivot lever, be movably stored. It is also possible to dispense entirely with dancer rollers and to measure the fabric tension only by suitable means, for example pressure gauges, in the deflection rollers 11, 12. However, the training with the dancer rollers 7, 8 has the advantage that a pretension can be adjusted to adapt to different materials to be processed.

Claims (14)

  1. A method of monitoring and/or controlling the fabric tension of a fabric web processed on a drum raising machine, the fabric being drawn in by a driven draw-in roller, being subjected to pile-raising and/or counterpile-raising energy on the drum by pile-raising and/or counterpile-raising rollers and being drawn off by a draw-off roller driven independently of the draw-in roller, the respective tension of the web being measured at the entry and exit by means of a tension detector, the resulting entry actual value and exit actual value of the tension being compared with preadjusted set values and with one another, whereafter in response to a deviation of the actual values from the corresponding set values and on the basis of the comparison between the entry and exit actual values of the tension with one another the fabric tension is readjusted automatically by independent adjustment of the speeds of the draw-in roller and/or draw-off roller, characterised in that the speeds of the pile-raising and/or pile-counter raising rollers and/or of the drum are readjusted automatically in dependence upon the fabric stretch arising from the fabric tension in order to ensure a very uniform distribution of fabric tension on the drum, a process control computer (26) and associated input unit (27) being used to compare the actual and set values and to readjust the speeds.
  2. A method according to claim 1, characterised In that a particular tension set value ensuring optimum fabric tension distribution on the drum for a particular fabric is adjusted at the fabric entry and fabric exit of the raising machine.
  3. A method according to claim 1 and/or 2, characterised in that floating rollers are used to measure the actual values.
  4. A method according to one or more of claims 1 to 3, characterised in that the set-value fabric tension is adjusted by means of pressure elements, more particularly by means of pneumatic reciprocating actuators which position the floating rollers.
  5. A method according to one or more of claims 1 to 4, characterised in that a respective variable-speed d.c. motor is used to drive the draw-in, draw-off, pile-raising and counterpile-raising rollers and for the drum.
  6. A drum raising machine, more particularly for the practice of the method according to one or more of claims 1 to 5, the machine having: pile-raising and/or counterpile-raising rollers disposed on the drum generated surface; a draw-in roller at the fabric entry; and a draw-off roller at the fabric exit, there being provided on the entry side measuring means which measure fabric tension, measuring means (8, 16) which produce measurement signals corresponding to fabric tension being disposed at the fabric exit (5), the entry and exit measuring means (7, 8, 15, 16) being connected to a process control computer (26) which is associated with an input unit (27) and which controls independently of one another and in dependence upon the measurement signals the speeds of the draw-in roller (4), draw-off roller (6), drum (1) and pile-raising and/or counterpile-raising rollers (S, G).
  7. A machine according to claim 6, characterised in that the measuring means have floating rollers (7, 8) which are connected to actual value sensors (15, 16).
  8. A machine according to claim 6 and/or 7, characterised in that the wrap angle of the fabric web (2) around the draw-in roller (4), draw-off roller (6) and floating rollers (7, 8) is in each case approximately 180° and a deflecting roller (11, 12) is disposed respectively between the floating roller (7) and the drum (1) and between the floating roller (8) and the drum (1).
  9. A machine according to claim 7 and/or 8, characterised in that the floating rollers (7, 8) are mounted pivotally by means of pivoted levers (13, 14).
  10. A machine according to one or more of claims 7 to 9, characterised in that each floating roller (7, 8) is connected to a pressure element (17, 18) which transmits a preselectable bias or preloading to the particular floating roller concerned.
  11. A machine according to claim 10, characterised in that the pressure elements (17, 18) are pneumatic reciprocating actuators.
  12. A machine according to one or more of claims 6 to 11, characterised by a respective separate drive, more particularly a respective variable-speed d.c. motor (21 - 25), for driving the drum (1), pile-raising rollers (S), counterpile-raising rollers (G), draw-in roller (4) and draw-off roller (6).
  13. A machine according to one or more of claims 6 - 12, characterised in that the actual value sensors (15, 16) are linear actual value sensors detecting the position of the associated floating roller (7, 8).
  14. A machine according to one or more of claims 6 to 13, characterised in that the linear actual value sensors (15, 16), pressure elements (17, 18) and d.c. motors (21 - 25) are connected to an electronic process control computer (26) having a device (27) for inputting set values.
EP86114009A 1985-11-16 1986-10-09 Method for regulating web tension in a raising machine, and raising machine Expired - Lifetime EP0224683B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114009T ATE74385T1 (en) 1985-11-16 1986-10-09 METHOD OF ADJUSTING THE FABRICS TENSION OF ROUND RUB RIPPING MACHINES AND ROLL RUB RIBBING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3540689 1985-11-16
DE19853540689 DE3540689A1 (en) 1985-11-16 1985-11-16 METHOD FOR REGULATING THE TENSION OF PRODUCTS IN TAMBOUR SMOOTHING MACHINES AND TAMBOUR SMOOTHING MACHINE

Publications (2)

Publication Number Publication Date
EP0224683A1 EP0224683A1 (en) 1987-06-10
EP0224683B1 true EP0224683B1 (en) 1992-04-01

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Application Number Title Priority Date Filing Date
EP86114009A Expired - Lifetime EP0224683B1 (en) 1985-11-16 1986-10-09 Method for regulating web tension in a raising machine, and raising machine

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US (1) US4803761A (en)
EP (1) EP0224683B1 (en)
AT (1) ATE74385T1 (en)
DE (2) DE3540689A1 (en)
ES (1) ES2030655T3 (en)

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CN105063947A (en) * 2015-08-07 2015-11-18 浙江彩蝶实业有限公司 Cloth double-side raising machine

Also Published As

Publication number Publication date
DE3540689A1 (en) 1987-05-21
EP0224683A1 (en) 1987-06-10
ES2030655T3 (en) 1992-11-16
DE3684672D1 (en) 1992-05-07
US4803761A (en) 1989-02-14
DE3540689C2 (en) 1988-01-07
ATE74385T1 (en) 1992-04-15

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