EP0316268B1 - Apparatus for treating a textile web by means of a plurality of rollers - Google Patents

Apparatus for treating a textile web by means of a plurality of rollers Download PDF

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Publication number
EP0316268B1
EP0316268B1 EP19880810683 EP88810683A EP0316268B1 EP 0316268 B1 EP0316268 B1 EP 0316268B1 EP 19880810683 EP19880810683 EP 19880810683 EP 88810683 A EP88810683 A EP 88810683A EP 0316268 B1 EP0316268 B1 EP 0316268B1
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Prior art keywords
valve
pressure
pressure medium
manual
control
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EP19880810683
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German (de)
French (fr)
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EP0316268A1 (en
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Edi Virtic
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Benninger AG Maschinenfabrik
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Benninger AG Maschinenfabrik
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06BTREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B7/00Mercerising, e.g. lustring by mercerising
    • D06B7/08Mercerising, e.g. lustring by mercerising of fabrics of indefinite length

Definitions

  • the invention relates to a device for treating a textile web according to the preamble of claim 1.
  • This can be, for example, a mercerizing machine in which a textile web in a bound web guide passes through several treatment stages and is immersed in liquid reaction or detergent. The liquid is squeezed out again via squeeze rollers and dancer rollers ensure uniform tension control of the textile web.
  • the machine operator uses manual valves to set the desired operating pressure on the pressure medium drive or to switch it on and off.
  • a disadvantage of known devices is that each individual pressure medium drive has to be set or operated manually, which makes commissioning and monitoring of the system considerably more difficult. Central operation of all pressure medium drives in manual mode could only be achieved by the complex laying of relatively long pressure medium lines. It is therefore an object of the invention to provide a device of the type mentioned in the introduction, in which all pressure medium drives can be carried out both on site manually and via a remote control from a central point, without the function and operational reliability being impaired.
  • this object is achieved with a device which has the features of claim 1.
  • the remote-controlled directional valve enables remote control of the pressure medium drives regardless of the position of the manual valve, since the latter is bridged by the bypass line. For example, all squeeze rollers can be delivered or lowered from a control center without having to operate each individual manual valve.
  • the setting of the desired operating pressure on the individual pressure medium drives can be made considerably easier if a remote-controllable pressure control valve is connected to the bypass line. In this way, the desired squeeze pressure on the squeeze mechanism or the tension on the dancer roller can also be set from a control center. Remote control is made considerably easier if the pressure medium drive can be activated pneumatically and if the pressure control valve can be controlled with an electrical signal.
  • the electrical signal lines can be accommodated in a space-saving manner without great effort and the pressure control can be carried out in the simplest way via a variable control voltage which is proportional to a specific output pressure at the pressure regulating valve.
  • a mercerizing machine 1 is shown in FIG. 1 as a representative of all fabric width treatment plants. It consists of squeezing 2 with its drive motors 3, which drive the squeezing 2, the absorbed liquid being squeezed out in the fabric web 4 or the fabric web being transported on.
  • the fabric web 4 is guided over lower and upper rollers 5a and 5b, and it is also acted upon by dancer rollers 6 in such a way that it passes the system with the desired fabric tension.
  • control stations 7 are generally arranged in the area of the squeeze, at which the squeeze pressure, the squeeze infeed and the fabric tension can be set manually by the machine operator 8.
  • a control panel is indicated at 23, on which the machine operator 8 can enter the various control commands centrally.
  • FIG. 2 A machine control according to the known prior art is shown in FIG. 2 for better understanding.
  • a machine control according to the known prior art is shown here, for better understanding.
  • a textile finishing machine such as, for example, a mercerizing machine.
  • the squeezers 2 consist of an upper squeeze roller 9b and a lower squeeze roller 9a.
  • the upper squeeze roller 9b is driven by a drive motor 3, while the lower squeeze roller 9a can be pressed against the upper squeeze roller via a pneumatic bellows 10.
  • the pneumatic bellows 10 is connected to the main pneumatic line 11 via a limiting valve 12, a reducing valve 13 and a closing valve 14. The pneumatic bellows 10 then actuates the lower squeeze roller 9a via a lever system (not shown).
  • the limiting valve 12 serves to limit the maximum permissible pressure, so that the rubberized surface of the two squeeze rollers 9a and 9b is protected against excessive stress.
  • the desired pinch pressure can be set manually on the reducing valve 13. This can be read on the manometer 15, which is calibrated in kN, for example.
  • the closing valve 14 which is also manually operated, the pneumatic bellows 10 is pressurized with compressed air or is decoupled from the compressed air and vented. When the pneumatic bellows 10 is vented, the lower squeeze roller 9a is lowered.
  • the valves 12, 13 and 14 described and the manometer 15 are located at the operating stations 7 according to FIG. 1 and are operated there by the machine operator 8.
  • the dancer rollers 6 assigned to the squeezers 2 generate the fabric tension via a pneumatic cylinder 18, which is also connected to the main pneumatic line 11 via a reducing valve 16.
  • the fabric web 4 is tensioned in accordance with the set pressure, which can be read on the manometer 17.
  • the pressure gauge 17 is preferably also calibrated in N.
  • the potentiometer 19, which is operatively connected to the drive motor 3 via a connecting line 20, is used to maintain the fabric tension.
  • a pressure switch 21 is also arranged in the main pneumatic line 11, which for safety reasons only releases the electrical system 22 when the pneumatic system is under pressure.
  • FIG. 3 now shows an arrangement according to the invention, in which the lower squeeze rollers 9a can be advanced or lowered via a remote control.
  • a directional control valve 24 is inserted in front of each pneumatic bellows 10, which can be activated via an electrical connecting line 25 by actuating the changeover switch 26 on the control panel 23 (FIG. 1).
  • the directional control valve 24 is connected on the one hand to the closing valve 14 and on the other hand to a bypass line 47 with which the closing valve 14 can be bridged. If the changeover switch 26 is actuated, the directional control valve 24 is set such that the pneumatic bellows 10 is pressurized via the bypass line 47.
  • the closing valve 14 is bridged regardless of its actual position, so that all squeezes can be delivered or lifted from the control panel 23. However, the desired operating pressure is still set manually via the reducing valve 13, since this is not bypassed by the bypass line 47.
  • an electrovalve 27 is installed in the main pneumatic line 11 and is connected to the electrical system 22. Regardless of which operating position the directional control valve 24 is in, if the electrical system 22 fails, the solenoid valve 27 is switched over and the main pneumatic line 11 is interrupted, so that the lower the nip rollers 9a and damage to the roller coating in the event of malfunctions is avoided.
  • the main pneumatic line 11 is connected again via the solenoid valve 27 and the squeeze rollers 9a are fed.
  • the delivery takes place with a time delay only when the feed pressure has built up in the entire system.
  • FIG. 4 shows a further stage of expansion of the control according to the invention.
  • an electropneumatic pressure control valve 29 is installed in the bypass line 47 of the squeezers 2, which is operatively connected to the potentiometer 30 on the control panel 23 via an electrical connecting line 31.
  • the pressure control valve 29 sets an electrical signal, e.g. convert an electrical voltage from zero to ten volts into an analog pneumatic pressure.
  • the mode of operation of such a pressure control valve is described in more detail, for example, in the journal "Oil Hydraulics and Pneumatics" 31 (1987) No. 5, pp. 454 to 456.
  • the desired control voltage or the desired operating pressure can be set by means of the potentiometer 30, the squeezing pressure analogous to the respective operating pressure being shown on the squeezer 2 on the display device 32 with kN calibration.
  • bypass line 47 in this arrangement not only has to bridge the closing valve 14, but also the reducing valve 13, so that there is no pressure limitation via the latter. From a central point, every single squeeze can be set to the correct operating pressure in the simplest way. The possibility of remote control is maintained until the switch 26 is switched to machine operation. When the switch 26 is actuated, the potentiometer 30 on the one hand and the electropneumatic pressure control valve 29 on the other hand are put out of operation. Likewise, the switch valve 24, which interrupts the bypass line 47, so that the reducing valve 13 and the closing valve 14 become effective again. The set squeezing pressure can always be read on the manometer 15.
  • the dancer rollers 6 can also be remotely controlled, in which the conventional reducing valve 16 can also be bridged with the aid of a directional valve 33 and a bypass line 47.
  • An electropneumatic pressure control valve 34 is installed in the bypass line.
  • the directional control valve 33 is connected to the electrical connecting line 36 via the electrical connecting line 35.
  • the pressure control valves 34 are operatively connected to a potentiometer 37 on the control panel, which is fed via the electrical connecting line 36.
  • the fabric tension can now also be set via the potentiometer 37, the tension exerted being read directly on an electrical display device 38 calibrated in N.
  • the changeover switch 39 in the electrical connecting line 36 optionally allows remote control via the pressure control valves 34 or manual operation via the reducing valves 16.
  • FIG. 5 shows in principle the same switching arrangement as FIG. 4, but the individual operating data can be entered and read at an input station 40 during remote control operation.
  • the input station 40 with a symbolically represented input 46 and an output 45 now makes it possible to prepare the mercerizing machine for a specific fabric web and to carry out the commissioning, the machine operator 8 now only having to perform a monitoring function.
  • the machine operator 8 now only having to perform a monitoring function.
  • he has the option of switching off the input station 40 in the event of malfunctions via the switch 44 and switching the system or parts of the system to manual operation depending on the position of the switch 44.

Description

Die Erfindung betrifft eine Vorrichtung zum Behandeln einer Textilbahn gemäss dem Oberbegriff von Anspruch 1. Dabei kann es sich beispielsweise um eine Mercerisiermaschine handeln, bei der eine Textilbahn in gebundener Bahnführung mehrere Behandlungsstufen durchläuft und dabei in flüssige Reaktions- bzw. Waschmittel eingetaucht wird. Ueber Quetschwalzen wird die Flüssigkeit wieder ausgepresst und Tänzerwalzen sorgen für eine gleichmässige Zugregelung der Textilbahn. Die Einstellung des gewünschten Betriebsdruckes am Druckmittelantrieb bzw. dessen Ein- und Ausschaltung erfolgt durch den Maschinenführer über Handventile.The invention relates to a device for treating a textile web according to the preamble of claim 1. This can be, for example, a mercerizing machine in which a textile web in a bound web guide passes through several treatment stages and is immersed in liquid reaction or detergent. The liquid is squeezed out again via squeeze rollers and dancer rollers ensure uniform tension control of the textile web. The machine operator uses manual valves to set the desired operating pressure on the pressure medium drive or to switch it on and off.

Ein Nachteil bekannter Vorrichtungen besteht darin, dass jeder einzelne Druckmittelantrieb manuell eingestellt bzw. betätigt werden muss, was die Inbetriebsetzung und Ueberwachung der Anlage wesentlich erschwert. Eine zentrale Bedienung sämtlicher Druckmittelantriebe im Handbetrieb konnte nur durch die aufwendige Verlegung relativ langer Druckmittelleitungen erreicht werden. Es ist daher eine Aufgabe der Erfindung, eine Vorrichtung der eingangs genannten Art zu schaffen, bei der sämtliche Druckmittelantriebe sowohl vor Ort manuell, als auch über eine Fernsteuerung von einer zentralen Stelle aus erfolgen kann, ohne dass die Funktion und die Betriebssicherheit beeinträchtigt werden.A disadvantage of known devices is that each individual pressure medium drive has to be set or operated manually, which makes commissioning and monitoring of the system considerably more difficult. Central operation of all pressure medium drives in manual mode could only be achieved by the complex laying of relatively long pressure medium lines. It is therefore an object of the invention to provide a device of the type mentioned in the introduction, in which all pressure medium drives can be carried out both on site manually and via a remote control from a central point, without the function and operational reliability being impaired.

Diese Aufgabe wird erfindungsgemäss mit einer Vorrichtung gelöst, welche die Merkmale von Anspruch 1 aufweist. Das fernsteuerbare Wegeventil ermöglicht eine ferngesteuerte Betätigung der Druckmittelantriebe unabhängig von der Stellung des Handventils, da letzteres durch die Bypassleitung überbrückt wird. So können beispielsweise sämtliche Quetschwalzen von einer Zentrale aus zugestellt oder abgesenkt werden, ohne dass jedes einzelne Handventil betätigt werden muss.According to the invention, this object is achieved with a device which has the features of claim 1. The remote-controlled directional valve enables remote control of the pressure medium drives regardless of the position of the manual valve, since the latter is bridged by the bypass line. For example, all squeeze rollers can be delivered or lowered from a control center without having to operate each individual manual valve.

Die Einstellung des gewünschten Betriebsdruckes an den einzelnen Druckmittelantrieben kann wesentlich erleichtert werden, wenn in die Bypassleitung ein fernsteuerbares Druckregelventil geschaltet ist. Auf diese Weise kann auch der gewünschte Quetschdruck am Quetschwerk oder die Zugspannung an der Tänzerwalze von einer Zentrale aus eingestellt werden. Die Fernsteuerung wird dabei wesentlich erleichtert, wenn der Druckmittelantrieb pneumatisch aktivierbar ist und wenn das Druckregelventil mit einem elektrischen Signal steuerbar ist. Die elektrischen Signalleitungen lassen sich ohne grossen Aufwand platzsparend unterbringen und die Drucksteuerung kann auf einfachste Weise über eine variable Steuerspannung erfolgen, die einem bestimmten Ausgangsdruck am Druckregelventil proportional ist.The setting of the desired operating pressure on the individual pressure medium drives can be made considerably easier if a remote-controllable pressure control valve is connected to the bypass line. In this way, the desired squeeze pressure on the squeeze mechanism or the tension on the dancer roller can also be set from a control center. Remote control is made considerably easier if the pressure medium drive can be activated pneumatically and if the pressure control valve can be controlled with an electrical signal. The electrical signal lines can be accommodated in a space-saving manner without great effort and the pressure control can be carried out in the simplest way via a variable control voltage which is proportional to a specific output pressure at the pressure regulating valve.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den in den Zeichnungen dargestellten Ausführungsbeispielen. Es zeigen:

Figur 1
eine schematisch dargestellte Behandlungsvorrichtung mit Quetschwalzen und Tänzerwalzen,
Figur 2
die Steuerung der Druckmittelantriebe gemäss Stand der Technik,
Figur 3
eine erfindungsgemässe Steuerung der Quetschwalzen ohne zentrale Druckregulierung,
Figur 4
ein abgewandeltes Ausführungsbeispiel mit zentraler Steuerung sämtlicher Druckmittelantriebe mit Druckregulierung und
Figur 5
das Ausführungsbeispiel gemäss Figur 4, jedoch mit Datenfernübertragung.

Further advantages and features of the invention result from the following description and from the exemplary embodiments illustrated in the drawings. Show it:
Figure 1
a schematically illustrated treatment device with squeeze rollers and dancer rollers,
Figure 2
the control of the pressure medium drives according to the state of the art,
Figure 3
an inventive control of the squeeze rolls without central pressure regulation,
Figure 4
a modified embodiment with central control of all pressure medium drives with pressure regulation and
Figure 5
the embodiment of Figure 4, but with remote data transmission.

In Figur 1 ist stellvertretend für alle Gewebebreitbehandlungsanlagen eine Mercerisiermaschine 1 dargestellt. Sie besteht aus Quetschen 2 mit ihren Antriebsmotoren 3, welche die Quetschen 2 antreiben, wobei die aufgenommene Flüssigkeit in der Gewebebahn 4 ausgequetscht wird, bzw. die Gewebebahn weitertransportiert wird.A mercerizing machine 1 is shown in FIG. 1 as a representative of all fabric width treatment plants. It consists of squeezing 2 with its drive motors 3, which drive the squeezing 2, the absorbed liquid being squeezed out in the fabric web 4 or the fabric web being transported on.

Die Gewebebahn 4 wird über untere und obere Walzen 5a und 5b geführt, wobei sie auch von Tänzerwalzen 6 so beaufschlagt wird, dass sie mit dem gewünschten Gewebezug die Anlage passiert.The fabric web 4 is guided over lower and upper rollers 5a and 5b, and it is also acted upon by dancer rollers 6 in such a way that it passes the system with the desired fabric tension.

Zur Bedienung der Quetschen 2 und der Zugregelung an den Tänzerwalzen 6 sind in der Regel im Bereich der Quetschen Bedienungsstationen 7 angeordnet, an denen der Quetschendruck, die Quetschenzustellung und der Gewebezug manuell durch den Maschinenführer 8 eingestellt werden können.To operate the squeeze 2 and the tension control on the dancer rollers 6, control stations 7 are generally arranged in the area of the squeeze, at which the squeeze pressure, the squeeze infeed and the fabric tension can be set manually by the machine operator 8.

Mit 23 ist ein Schaltpult angedeutet, an dem der Maschinenführer 8 die verschiedenen Steuerbefehle zentral eingeben kann. In einem von der Anlage räumlich getrennten Komandoraum 41 kann eine Datenverarbeitungsanlage 40 mit einem Bildschirm 43 aufgestellt sein, welche von einem Meister 42 bedient und überwacht wird.A control panel is indicated at 23, on which the machine operator 8 can enter the various control commands centrally. A data processing system 40 with a screen 43, which is operated and monitored by a master 42, can be set up in a command room 41 spatially separated from the system.

In Figur 2 ist zum besseren Verständnis eine Maschinensteuerung gemäss dem bekannten Stand der Technik dargestellt. Der Einfachheit halber sind hier, sowie bei den nachfolgenden Figuren nur zwei Quetschen 2 und zwei Tänzerrollen 6 dargestellt. Tatsächlich sind an einer Textilveredelungsmaschine wie z.B. an einer Mercerisiermaschine jedoch mehrere solche Einheiten angeordnet.A machine control according to the known prior art is shown in FIG. 2 for better understanding. For the sake of simplicity, only two squeezers 2 and two dancer rolls 6 are shown here, as well as in the following figures. In fact, however, several such units are arranged on a textile finishing machine such as, for example, a mercerizing machine.

Die Quetschen 2 bestehen aus einer oberen Quetschwalze 9b und einer unteren Quetschwalze 9a. Die obere Quetschwalze 9b wird durch einen Antriebsmotor 3 angetrieben, während die untere Quetschwalze 9a über einen Pneumatikbalg 10 gegen die obere Quetschwalze pressbar ist. Zu diesem Zweck wird der Pneumatikbalg 10 über ein Begrenzungsventil 12, ein Reduzierventil 13 und ein Schliessventil 14 an die Pneumatikhauptleitung 11 angeschlossen. Der Pneumatikbalg 10 betätigt darauf über ein nicht näher dargestelltes Hebelsystem die untere Quetschwalze 9a.The squeezers 2 consist of an upper squeeze roller 9b and a lower squeeze roller 9a. The upper squeeze roller 9b is driven by a drive motor 3, while the lower squeeze roller 9a can be pressed against the upper squeeze roller via a pneumatic bellows 10. For this purpose, the pneumatic bellows 10 is connected to the main pneumatic line 11 via a limiting valve 12, a reducing valve 13 and a closing valve 14. The pneumatic bellows 10 then actuates the lower squeeze roller 9a via a lever system (not shown).

Das Begrenzungsventil 12 dient dazu, den maximal zulässigen Druck zu begrenzen, damit die gummierte Oberfläche der beiden Quetschwalzen 9a und 9b vor übermässiger Belastung geschützt wird. Am Reduzierventil 13 kann der gewünschte Quetschdruck manuell eingestellt werden. Dieser kann am Manometer 15 abgelesen werden, das beispielsweise in kN geeicht ist. Mit dem ebenfalls manuell zu betätigenden Schliessventil 14 wird der Pneumatikbalg 10 mit Druckluft beaufschlagt bzw. von der Druckluft abgekoppelt und entlüftet. Bei entlüftetem Pneumatikbalg 10 wird die untere Quetschwalze 9a abgesenkt. Die beschriebenen Ventile 12, 13 und 14 sowie das Manometer 15 befinden sich an den Bedienungsstationen 7 gemäss Figur 1 und werden dort vom Maschinenführer 8 bedient.The limiting valve 12 serves to limit the maximum permissible pressure, so that the rubberized surface of the two squeeze rollers 9a and 9b is protected against excessive stress. The desired pinch pressure can be set manually on the reducing valve 13. This can be read on the manometer 15, which is calibrated in kN, for example. With the closing valve 14, which is also manually operated, the pneumatic bellows 10 is pressurized with compressed air or is decoupled from the compressed air and vented. When the pneumatic bellows 10 is vented, the lower squeeze roller 9a is lowered. The valves 12, 13 and 14 described and the manometer 15 are located at the operating stations 7 according to FIG. 1 and are operated there by the machine operator 8.

Die den Quetschen 2 zugeordneten Tänzerwalzen 6 erzeugen den Gewebezug über einen Pneumatikzylinder 18, der über ein Reduzierventil 16 ebenfalls an die Pneumatikhauptleitung 11 angeschlossen ist. Entsprechend dem eingestellten Druck, der am Manometer 17 abzulesen ist, wird die Gewebebahn 4 gespannt. Das Manometer 17 ist vorzugsweise ebenfalls in N geeicht. Zur Einhaltung des Gewebezuges dient das Potentiometer 19, welches über eine Verbindungsleitung 20 in Wirkverbindung mit dem Antriebsmotor 3 steht. In der Pneumatikhauptleitung 11 ist noch ein Druckschalter 21 angeordnet, der die elektrische Anlage 22 aus Sicherheitsgründen erst dann freigibt, wenn das pneumatische System unter Druck steht.The dancer rollers 6 assigned to the squeezers 2 generate the fabric tension via a pneumatic cylinder 18, which is also connected to the main pneumatic line 11 via a reducing valve 16. The fabric web 4 is tensioned in accordance with the set pressure, which can be read on the manometer 17. The pressure gauge 17 is preferably also calibrated in N. The potentiometer 19, which is operatively connected to the drive motor 3 via a connecting line 20, is used to maintain the fabric tension. A pressure switch 21 is also arranged in the main pneumatic line 11, which for safety reasons only releases the electrical system 22 when the pneumatic system is under pressure.

Wie bereits eingangs erwähnt, erlaubt die in Figur 2 dargestellte Anordnung gemäss Stand der Technik keine simultane Bedienung sämtlicher Druckmittelantriebe von einer zentralen Stelle aus. Figur 3 zeigt nun eine erfindungsgemässe Anordnung, bei welcher die unteren Quetschwalzen 9a über eine Fernsteuerung zugestellt bzw. abgesenkt werden können.As already mentioned at the beginning, the arrangement according to the prior art shown in FIG. 2 does not allow simultaneous operation of all pressure medium drives from a central location. FIG. 3 now shows an arrangement according to the invention, in which the lower squeeze rollers 9a can be advanced or lowered via a remote control.

Zu diesem Zweck ist vor jedem Pneumatikbalg 10 ein Wegeventil 24 eingefügt, welches über eine elektrische Verbindungsleitung 25 durch Betätigen des Umschalters 26 auf dem Schaltpult 23 (Figur 1) aktivierbar ist. Das Wegeventil 24 ist einerseits an das Schliessventil 14 und anderseits an eine Bypassleitung 47 angeschlossen, mit welcher das Schliessventil 14 überbrückbar ist. Wird der Umschalter 26 betätigt, so stellt sich das Wegeventil 24 derart ein, dass der Pneumatikbalg 10 über die Bypassleitung 47 mit Druck beaufschlagt wird. Das Schliessventil 14 wird dabei unabhängig von seiner tatsächlichen Stellung überbrückt, so dass sämtliche Quetschen vom Schaltpult 23 aus zugestellt oder abgehoben werden können. Die Einstellung des gewünschten Betriebsdruckes erfolgt jedoch nach wie vor manuell über das Reduzierventil 13, da dieses von der Bypassleitung 47 nicht überbrückt wird. Beim Rückstellen des Umschalters 26 fällt das Wegeventil 24 wieder in eine Stellung zurück, in der die Bypassleitung 47 unterbrochen und der Pneumatikbalg 10 über das Schliessventil 14 gespeist wird. In dieser Stellung kann die Quetschenbetätigung wiederum manuell unmittelbar an der Bedienungsstation 7 erfolgen.For this purpose, a directional control valve 24 is inserted in front of each pneumatic bellows 10, which can be activated via an electrical connecting line 25 by actuating the changeover switch 26 on the control panel 23 (FIG. 1). The directional control valve 24 is connected on the one hand to the closing valve 14 and on the other hand to a bypass line 47 with which the closing valve 14 can be bridged. If the changeover switch 26 is actuated, the directional control valve 24 is set such that the pneumatic bellows 10 is pressurized via the bypass line 47. The closing valve 14 is bridged regardless of its actual position, so that all squeezes can be delivered or lifted from the control panel 23. However, the desired operating pressure is still set manually via the reducing valve 13, since this is not bypassed by the bypass line 47. When the changeover switch 26 is reset, the directional control valve 24 falls back into a position in which the bypass line 47 is interrupted and the pneumatic bellows 10 is fed via the closing valve 14. In this position, the squeezing operation can again be carried out manually directly at the operating station 7.

Zusätzlich ist in die Pneumatikhauptleitung 11 ein Elektroventil 27 eingebaut, das mit der elektrischen Anlage 22 in Verbindung steht. Unabhängig davon, in welcher Betriebsstellung sich das Wegeventil 24 befindet, wird beim Ausfall der elektrischen Anlage 22 das Elektroventil 27 umgeschaltet und die Pneumatikhauptleitung 11 unterbrochen, so dass sich die unteren Quetschwalzen 9a absenken und eine Beschädigung der Walzenbeschichtung bei Betriebsstörungen vermieden wird.In addition, an electrovalve 27 is installed in the main pneumatic line 11 and is connected to the electrical system 22. Regardless of which operating position the directional control valve 24 is in, if the electrical system 22 fails, the solenoid valve 27 is switched over and the main pneumatic line 11 is interrupted, so that the lower the nip rollers 9a and damage to the roller coating in the event of malfunctions is avoided.

Wird die elektrische Anlage wieder in Betrieb gesetzt, dann wird die Pneumatikhauptleitung 11 über das Elektroventil 27 wiederum angeschlossen und die Quetschwalzen 9a werden zugestellt. Die Zustellung erfolgt dabei mit einer zeitlichen Verzögerung erst dann, wenn der Speisedruck in der gesamten Anlage aufgebaut ist.If the electrical system is put into operation again, the main pneumatic line 11 is connected again via the solenoid valve 27 and the squeeze rollers 9a are fed. The delivery takes place with a time delay only when the feed pressure has built up in the entire system.

Durch den Einbau des Elektroventils 27 in die Hauptleitung 11 ist es notwendig, für die Versorgung der Pneumatikzylinder 18 an den Tänzerwalzen 6 eine zweite Pneumatikhauptleitung 28 vorzusehen, um zu verhindern, dass die Druckgebung bei der Umschaltung des Elektroventils 27 nicht unterbrochen wird. Die Zugreglerbetätigung ist im übrigen gleich wie bei Figur 2.By installing the electrovalve 27 in the main line 11, it is necessary to provide a second pneumatic main line 28 for supplying the pneumatic cylinders 18 to the dancer rollers 6 in order to prevent the pressure from being interrupted when the electrovalve 27 is switched. The actuation of the train controller is otherwise the same as in FIG. 2.

Figur 4 zeigt eine weitere Ausbaustufe der erfindungsgemässen Steuerung. In die Bypassleitung 47 der Quetschen 2 ist zu diesem Zweck ein elektropneumatisches Druckregelventil 29 eingebaut, das über eine elektrische Verbindungsleitung 31 mit einem Potentiometer 30 auf dem Schaltpult 23 in Wirkverbindung steht. Das Druckregelventil 29 setzt auf an sich bekannte Weise ein elektrisches Signal, z.B. eine elektrische Spannung von null bis zehn Volt in einen analogen pneumatischen Druck um. Die Wirkungsweise eines derartigen Druckregelventils ist beispielsweise genauer beschrieben in der Zeitschrift "Oelhydraulik und Pneumatik" 31 (1987) No. 5, S.454 bis 456.FIG. 4 shows a further stage of expansion of the control according to the invention. For this purpose, an electropneumatic pressure control valve 29 is installed in the bypass line 47 of the squeezers 2, which is operatively connected to the potentiometer 30 on the control panel 23 via an electrical connecting line 31. The pressure control valve 29 sets an electrical signal, e.g. convert an electrical voltage from zero to ten volts into an analog pneumatic pressure. The mode of operation of such a pressure control valve is described in more detail, for example, in the journal "Oil Hydraulics and Pneumatics" 31 (1987) No. 5, pp. 454 to 456.

Mittels des Potentiometers 30 kann die gewünschte Steuerspannung bzw. der gewünschte Betriebsdruck eingestellt werden, wobei am Anzeigegerät 32 mit kN-Eichung der dem jeweiligen Betriebsdruck analoge Quetschdruck an der Quetsche 2 unmittelbar abgelesen werden kann.The desired control voltage or the desired operating pressure can be set by means of the potentiometer 30, the squeezing pressure analogous to the respective operating pressure being shown on the squeezer 2 on the display device 32 with kN calibration.

Ersichtlicherweise muss die Bypassleitung 47 bei dieser Anordnung nicht nur das Schliessventil 14, sondern auch das Reduzierventil 13 überbrücken, damit über letzteres keine Druckbegrenzung erfolgt. Von einer zentralen Stelle aus kann so auf einfachste Weise jede einzelne Quetsche auf den richtigen Betriebsdruck eingestellt werden. Die Möglichkeit der Fernbedienung wird so lange aufrechterhalten, bis der Umschalter 26 auf Maschinenbedienung umgestellt wird. Bei Betätigung des Umschalters 26 wird einerseits das Potentiometer 30 und anderseits das elektropneumatische Druckregelventil 29 ausser Betrieb gesetzt. Ebenso das Weichenventil 24, welches die Bypassleitung 47 unterbricht, so dass das Reduzierventil 13 und das Schliessventil 14 wieder wirksam werden. Der eingestellte Quetschendruck kann immer am Manometer 15 abgelesen werden.Obviously, the bypass line 47 in this arrangement not only has to bridge the closing valve 14, but also the reducing valve 13, so that there is no pressure limitation via the latter. From a central point, every single squeeze can be set to the correct operating pressure in the simplest way. The possibility of remote control is maintained until the switch 26 is switched to machine operation. When the switch 26 is actuated, the potentiometer 30 on the one hand and the electropneumatic pressure control valve 29 on the other hand are put out of operation. Likewise, the switch valve 24, which interrupts the bypass line 47, so that the reducing valve 13 and the closing valve 14 become effective again. The set squeezing pressure can always be read on the manometer 15.

Auf ähnliche Weise können auch die Tänzerwalzen 6 ferngesteuert werden, in dem das herkömmliche Reduzierventil 16 ebenfalls mit Hilfe eines Wegeventils 33 und einer Bypassleitung 47 überbrückbar ist. In die Bypassleitung ist ein elektropneumatisches Druckregelventil 34 eingebaut. Das Wegeventil 33 ist über die elektrische Verbindungsleitung 35 mit der elektrischen Verbindungsleitung 36 verbunden. Beim Betätigen des Umschalters 39 werden somit auch die Wegeventile 33 für die Fernsteuerung der Tänzerwalzen 6 aktiviert. Die Druckregelventile 34 stehen in Wirkverbindung mit einem Potentiometer 37 am Schaltpult, das über die elektrische Verbindungsleitung 36 gespeist wird. Auf die gleiche Art und Weise wie bei den Quetschen kann nun auch der Gewebezug über das Potentiometer 37 eingestellt werden, wobei der ausgeübte Zug unmittelbar an einem in N geeichten elektrischen Anzeigegerät 38 abzulesen ist. Der Umschalter 39 in der elektrischen Verbindungsleitung 36 erlaubt wahlweise eine Fernbedienung über die Druckregelventile 34 oder eine manuelle Bedienung über die Reduzierventile 16.In a similar way, the dancer rollers 6 can also be remotely controlled, in which the conventional reducing valve 16 can also be bridged with the aid of a directional valve 33 and a bypass line 47. An electropneumatic pressure control valve 34 is installed in the bypass line. The directional control valve 33 is connected to the electrical connecting line 36 via the electrical connecting line 35. When the switch 39 is actuated, the directional valves 33 for the remote control of the dancer rollers 6 are thus also activated. The pressure control valves 34 are operatively connected to a potentiometer 37 on the control panel, which is fed via the electrical connecting line 36. In the same way as with the squeezing, the fabric tension can now also be set via the potentiometer 37, the tension exerted being read directly on an electrical display device 38 calibrated in N. The changeover switch 39 in the electrical connecting line 36 optionally allows remote control via the pressure control valves 34 or manual operation via the reducing valves 16.

Die Figur 5 zeigt im Prinzip die gleiche Schaltanordnung wie Figur 4, wobei jedoch beim Fernsteuerungsbetrieb die einzelnen Betriebsdaten an einer Eingabestation 40 eingegeben und abgelesen werden können. Die Eingabestation 40 mit einem symbolisch dargestellten Input 46 und einem Output 45 erlaubt es nun, die Mercerisiermaschine für eine bestimmte Gewebebahn vorzubereiten und die Inbetriebsetzung durchzuführen, wobei der Maschinenführer 8 nur noch eine Ueberwachungsfunktion auszuüben hat. Anderseits hat er jedoch die Möglichkeit, bei Fehlfunktionen über den Ausschalter 44 die Eingabestation 40 auszuschalten und die Anlage oder Teile der Anlage je nach Stellung des Ausschalters 44 auf manuellen Betrieb umzustellen.5 shows in principle the same switching arrangement as FIG. 4, but the individual operating data can be entered and read at an input station 40 during remote control operation. The input station 40 with a symbolically represented input 46 and an output 45 now makes it possible to prepare the mercerizing machine for a specific fabric web and to carry out the commissioning, the machine operator 8 now only having to perform a monitoring function. On the other hand, however, he has the option of switching off the input station 40 in the event of malfunctions via the switch 44 and switching the system or parts of the system to manual operation depending on the position of the switch 44.

Claims (8)

1. Device for the treatment of a textile web (4) with numerous rollers acting upon the textile web (5a, 5b, 6), whereby at least one roller is mounted moveably in bearings and is coordinated with a pressure medium actuator (10, 18) which is connected to a pressure medium source (11, 28) by means of a pipe in which at least one manual valve (13, 14, 16) is arranged for pressure control, characterized in that a remotely controllable directional valve (24, 33) is connected upstream of the pressure medium actuator and that the pressure medium actuator (10, 18) is selectively connected through the manual valve (13, 14, 16) or through a bypass pipe (47) which bridges the manual valve, dependent on the position of the directional valve.
2. Device according to claim 1, characterized in that a remotely controlled pressure regulating valve (29, 34) is connected into the bypass pipe (47).
3. Device according to claim 2, characterized in that the pressure medium actuator (10, 18) is able to be actuated pneumatically and that the pressure regulating valve (29, 34) is able to be controlled by an electrical signal.
4. Device according to one of the claims 1 to 3, characterized in that the pressure medium actuator (10) is connected to a squeeze roller (9a) and that the bypass pipe (47) bridges a manual shut-off valve (14).
5. Device according to claim 4, characterized in that, in addition, the bypass pipe (47) bridges a manual reducing valve (13).
6. Device according to one of the claims 1 to 3, characterized in that the pressure medium actuator is connected to a jockey roller (6) for tension regulation and that the bypass pipe (47) bridges a manual reducing valve (16).
7. Device according to one of the claims 1 to 6, characterized in that numerous pressure medium actuators (10, 18) are connected into a common pressure medium source (11, 28) and that all directional valves (24, 33) are able to be activated through a common control cable (25).
8. Device according to one of the claims 3 to 6 in combination with claim 7, characterized in that each pressure regulating valve (29, 34) is able to be controlled individually through its own control device (30, 37).
EP19880810683 1987-10-12 1988-10-04 Apparatus for treating a textile web by means of a plurality of rollers Revoked EP0316268B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH399087A CH673854A5 (en) 1987-10-12 1987-10-12
CH3990/87 1987-10-12

Publications (2)

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EP0316268A1 EP0316268A1 (en) 1989-05-17
EP0316268B1 true EP0316268B1 (en) 1992-01-02

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Application Number Title Priority Date Filing Date
EP19880810683 Revoked EP0316268B1 (en) 1987-10-12 1988-10-04 Apparatus for treating a textile web by means of a plurality of rollers

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EP (1) EP0316268B1 (en)
CH (1) CH673854A5 (en)
DE (1) DE3867434D1 (en)
ES (1) ES2028360T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100451A1 (en) * 1980-04-10 1982-01-07 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Remote-controlled adjustment system for controlling the production of printed images on printers
DD158712A3 (en) * 1981-06-15 1983-02-02 Alfons Degwerth METHOD AND DEVICE FOR MERCERIZING TEXTILE FABRICS
FI74064C (en) * 1984-05-18 1987-12-10 Waertsilae Oy Ab Control device for roller press

Also Published As

Publication number Publication date
DE3867434D1 (en) 1992-02-13
EP0316268A1 (en) 1989-05-17
CH673854A5 (en) 1990-04-12
ES2028360T3 (en) 1992-07-01

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