EP0841418B1 - Device for controlling the warp thread tension and loom using such device - Google Patents

Device for controlling the warp thread tension and loom using such device Download PDF

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Publication number
EP0841418B1
EP0841418B1 EP96810773A EP96810773A EP0841418B1 EP 0841418 B1 EP0841418 B1 EP 0841418B1 EP 96810773 A EP96810773 A EP 96810773A EP 96810773 A EP96810773 A EP 96810773A EP 0841418 B1 EP0841418 B1 EP 0841418B1
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EP
European Patent Office
Prior art keywords
tensioner
warp
accordance
spring member
regulating valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96810773A
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German (de)
French (fr)
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EP0841418A1 (en
Inventor
Godert Dr. De Jager
Frank Dr. Lehnert
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Itema Switzerland Ltd
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Sulzer Textil AG
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Filing date
Publication date
Application filed by Sulzer Textil AG filed Critical Sulzer Textil AG
Priority to DE59608400T priority Critical patent/DE59608400D1/en
Priority to EP96810773A priority patent/EP0841418B1/en
Priority to US08/947,400 priority patent/US5890519A/en
Priority to JP30727997A priority patent/JP3875782B2/en
Publication of EP0841418A1 publication Critical patent/EP0841418A1/en
Application granted granted Critical
Publication of EP0841418B1 publication Critical patent/EP0841418B1/en
Anticipated expiration legal-status Critical
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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04Control of the tension in warp or cloth

Definitions

  • the invention relates to a device for control a warp tensioner according to the preamble of Claim 1 and a weaving machine with such Contraption.
  • a device of the type mentioned is from the DE-U-93 04 801.7 and known from DE 38 33 685 A1.
  • the swivel is mounted Spanning boom monitored by means of a position sensor and biased by an air spring.
  • the air spring is preloaded by manual actuation.
  • the air spring is a control valve assigned to the by changing the air pressure To change tension in the warp, whereby the Warp tension proportional to the change in air pressure behaves.
  • the air spring has a predetermined one Spring characteristic and is therefore only limited applicable. This also applies when the warp tensioner is preloaded with coil spring or torsion bars.
  • the inventive in question here Devices are related to the elements the weaving machine described, which on the course of the Apply warp tension.
  • the warp is 1 from a warp beam 2 via a deflection beam 3, and one Warp tensioner 4 and through the heald frames 5 and a Reed 6 and the fabric 7 over a Goods removal device 8 guided.
  • the warp beam 2 is with a warp let-off device 9.
  • the Warp tensioner 4 has the warp 1 during To apply tension to the weaving process.
  • the Warp tensioner 4 is lightweight and supported several times and includes a clamping element 11 and a support 12 on which the clamping element is rotatably mounted and which is held on a support tree 14, such that the clamping element 11 is pivotable about the axis 15.
  • At least one Lever 16 is attached to the support tree 14 and with a Air spring 21 connected, which is part of a subsequent described control device is.
  • the air spring 21 is supported on the one hand on the weaving machine frame 17 and on the other hand by means of an organ 18 with the lever 16 connected such that the air spring 21 in the direction of Double arrow B is adjustable.
  • the control device contains the aforementioned air spring 21, an electric actuated control valve 22 with exhaust valve, a sensor 23 for scanning the position of the warp tensioner 4, a pressure line 24, a connecting line 25 and one Control device.
  • the control device includes one Control unit 31, which is part of the weaving machine control (not shown) or formed as a separate unit and with the terminal 32 of the weaving machine is connected to transmit signals and an arrangement 26, around the swivel range of the warp tensioner 4 to be determined.
  • the arrangement includes two groups that each a container 33 and a 2/2-way valve 34 and which are connected in series via a Stub 36 connected to the connecting line 25 are. For the purpose of vibration damping, the groups are each assigned a throttle 35.
  • the control valve 22 and the Valves 34 and throttles 35 are signal-transmitting with the Control unit 31 connected.
  • Terminal 32 is used to set the Target position of the warp tensioner, the determination of the Swivel range of the warp tensioner, the Warp tension and damping adjustment.
  • the control loop becomes the setting of the setpoints formed from sensor 23, control valve 22 and air spring 21 activated and the warp tensioner through Pressurizing the air spring and controlling the Warp let down in the middle target position and always kept in this by the control loop.
  • To step Deviations from the target position which one Deviation in the warp tension, so it will Signal from the position sensor or a signal from a Warp force sensor for controlling the Warp let-off device or to change the air pressure
  • the air spring used the target warp tension and the To restore the desired position of the warp tensioner. Instead of the signal from the warp force sensor, it is possible to a signal derived from the air pressure in the air spring to apply.
  • the warp tension is of the type of depending on the fabric to be manufactured. While with fabrics with high weft density a higher thread tension and a Small swivel range is required for tissue a constant thread tension with low weft density and a larger swivel range is required. With others Words the spring stiffness of the air spring needs to be changed become, i.e. with the well-known warp tensioners, the Spring to be replaced. This already has mentioned disadvantages result.
  • the warp thread pull becomes the main thing changed by subject training so that periodic Warp tension fluctuations occur.
  • a high warp tension is chosen and the fluctuations absorbed by the elasticity of the warp threads, while a low warp tension is provided for light fabrics and the fluctuations caused by the warp tensioner be balanced.
  • the warp tensioner can thus for one partial compensation of the warp tension at the Formation of a shed can be used, i.e. in the The warp tensioner gives part of the training for the warp opening required the chain length freely and takes this again at the close of the subject.
  • adjustable throttle valves 35 are the containers 33 upstream.
  • FIGS. 2 and 3 show an embodiment of the device, which differs from the embodiment according to FIG. 1 the arrangement of the air spring 21 and by an arrangement 27 to determine the swivel range of the Webkettspanners 4 differs.
  • Fig. 3 are A plurality of warp tensioners 4 are provided and each Warp tensioner 4 is at least one air spring 21 assigned.
  • the air springs 21 are on a carrier 38 attached, part of a detailed Loom is (Fig. 3).
  • FIG. 4 shows an embodiment of the device, which is constructed essentially the same as that Devices according to Figures 1 and 2 and of these differs in that a device 41 is provided is to vary the pressure in the air spring 21.
  • This Device includes an air spring 42 and one Actuating mechanism with a cam disk 43 and an electric drive 44, which with the Control device 31 is connected.
  • a control loop can be applied to the air spring 42 periodically charged. This can be done in the Control circuit a separate 3/3-way valve 45 that over Check valves 46 connected to the branch line 36 is or the control valve 22 is provided as an actuator become.
  • the Warp tension e.g. at the time of leafing increases, thereby advantageously the shot density of the tissue is increased and at the time of Subject crossing is increased to the division at Improved opening of the shed.
  • the Fig. 5 shows a provided with a spanning tree 11 Warp tensioner 4, which is slidable on the Machine frame 17 of a loom is arranged. The required for guiding the warp tensioner Elements are not shown.
  • Fig. 5 further shows is an air spring 51 on the one hand with the Warp tensioner and on the other hand by means of a Joint arrangement 52 connected to the carrier 38.
  • the Air spring 51 is connected via the connecting line 25 to the connected control device not shown here.
  • the Spanning tree 11 is on a plurality of warp tensioners 4 supported, at freely selectable intervals, the same or can be arranged differently (Fig. 6).
  • the joint arrangement 52 is designed that the air spring 51 about a vertical axis 53 is pivotable. As shown in FIG. 7, the spanning tree 11 deformed in the longitudinal extent and the on the Warp tension acting essentially warp are kept equally high (Fig. 7).
  • Fig. 8 shows are instead of the one-piece spanning tree 11 according to FIG. 6 a number of partial spanning trees 61 intended.
  • Each of these partial spanning trees is at least a warp tensioner 4, an air spring 51 and one Control device of the type described above assigned.
  • the partial spanning trees 61 it is possible essentially the deformation shown in Fig. 7 understand.
  • the chain coulters are achieved at the interfaces of the partial spanning trees 61 each have connecting members 62 intended.
  • the connecting members have one Middle section 63 and two insert sections 64 with crowned outer surface.
  • Fig. 10 shows a device that is hydropneumatic is operated to the position of the warp tensioner 4th adjust.
  • this device in addition to the Air spring 21 with the control circuit for pressure control and the control loop for the volume change Actuator 71 e.g. a bellows, on the one hand, with the Air spring 21 is connected and on the other hand on the carrier 38 is supported or attached and an electrical actuatable control valve 72 is provided, which on the one hand via a line 73 with the actuating element 71 and on the other hand via a line 74 with a Hydraulic source (not shown) is connected.
  • a Hydraulic source not shown
  • this Device provided a 2/2-way valve 75, the on the one hand via line 74 to the hydraulic source and on the other hand is connected to the container 33.
  • the Control valve 72 and 2/2-way valve 75 are signal-transmitting with the weaving machine control device 31 connected.
  • Fig. 11 shows a device which is pneumatic and is operated mechanically to the position of the To change warp tensioner 4. This is a Piston assembly 77 provided with a drive 78 which with the weaving machine control device 31 is connected to transmit the arrangement 77 from To control Terminal 32 from.
  • tension trees 11, 61 are tubular and advantageously with a Filling material (not shown) are provided to the To prevent kinking of the pipes.
  • the pipes can be made Metal or non-metal.
  • the device includes a spring member 21 which with the Warp tensioner 4 is in operative connection and one Control device one via a 2/2-way valve 34 container 33 communicating with the spring member 21, 51 has to increase and decrease the Volume of the air spring the spring stiffness of the Spring link and the position of the warp tensioner by to change a terminal centrally on the Weber booth site.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Steuerung eines Webkettenspanners gemäss dem Oberbegriff des Anspruches 1 sowie eine Webmaschine mit einer derartigen Vorrichtung.The invention relates to a device for control a warp tensioner according to the preamble of Claim 1 and a weaving machine with such Contraption.

Bekanntlich weist jede Webmaschine einen Webkettenspanner auf. Der Webkettenspanner hat einen Spannbaum, der immer in der gleichen mittleren Stellung gehalten wird. Der Webkettenspanner erfüllt u.a. folgende Aufgaben:

  • Ausgleich der Kettlänge bei der Bildung des Webfaches und
  • Erzeugung der Kettzugkraft und somit der Kettspannung über den Spannbaum..
As is known, each weaving machine has a warp tensioner. The warp tensioner has a tensioning boom that is always held in the same middle position. The warp tensioner performs the following tasks, among others:
  • Compensate the warp length when forming the shed and
  • Generation of the warp tensile force and thus the warp tension via the tensioning boom ..

Bekannt ist auch, dass die Kettspannung von der Art des Gewebes abhängig ist.It is also known that the warp tension depends on the type of Tissue is dependent.

Eine Vorrichtung der eingangs genannten Art ist aus der DE-U-93 04 801.7 sowie aus der DE 38 33 685 A1 bekannt. Bei der DE-U-93 04 801.7 wird der schwenkbar gelagerte Spannbaum mittels eines Positionssensors überwacht und einer Luftfeder vorgespannt. Bei der DE 38 33 685 A1 wird die Luftfeder durch ein manuelles Betätigen vorgespannt. Der Luftfeder ist ein Regelventil zugeordnet, um durch Veränderung des Luftdruckes die Spannung in der Webkette zu verändern, wobei sich die Kettspannung proportional zur Aenderung des Luftdruckes verhält. Die Luftfeder hat eine vorbestimmte Federcharakteristik und ist daher nur in Grenzen anwendbar. Dies trifft auch zu, wenn der Webkettenspanner mit Schraubenfeder oder Torsionsstäben vorgespannt wird.A device of the type mentioned is from the DE-U-93 04 801.7 and known from DE 38 33 685 A1. In DE-U-93 04 801.7, the swivel is mounted Spanning boom monitored by means of a position sensor and biased by an air spring. In DE 38 33 685 A1 the air spring is preloaded by manual actuation. The air spring is a control valve assigned to the by changing the air pressure To change tension in the warp, whereby the Warp tension proportional to the change in air pressure behaves. The air spring has a predetermined one Spring characteristic and is therefore only limited applicable. This also applies when the warp tensioner is preloaded with coil spring or torsion bars.

Dies ist ein Nachteil, der dazu führt, dass die Spannfedern bei einem Artikelwechsel ausgetauscht werden müssen mit den daraus folgenden und bekannten Nachteilen.This is a disadvantage that causes the Tension springs are exchanged when changing articles must with the resulting and known disadvantages.

Im folgenden wird die Erfindung anhand der beiliegenden Zeichnungen erläutert.In the following the invention with reference to the enclosed Drawings explained.

Es zeigen:

Fig. 1
Eine schematische Darstellung einer ersten Ausführungsform einer erfindungsgemässen Vorrichtung;
Fig. 2
eine schematische Darstellung einer zweiten Ausführungsform einer erfindungsgemässen Vorrichtung;
Fig. 3
eine Darstellung in Richtung des Pfeiles "A" in Fig. 2,
Fig. 4
eine schematische Darstellung einer dritten Ausführungsform einer erfindungsgemässen Vorrichtung;
Fig. 5
eine Modifikation der Vorrichtung gemäss Fig. 3;
Fig. 6
einen Schnitt entlang der Linie VI-VI in Fig. 5;
Fig. 7
eine schematische Darstellung der Wirkungsweise der Vorrichtung;
Fig. 8
eine Modifikation der Vorrichtung gemäss Fig. 5;
Fig. 9
ein Schnitt entlang der Linie IX-IX in Fig. 8;
Fig. 10
eine schematische Darstellung einer vierten Ausführungsform einer erfindungsgemässen Vorrichtung und
Fig. 11
eine schematische Darstellung einer fünften Ausführungsform einer erfindungsgemässen Vorrichtung.
Show it:
Fig. 1
A schematic representation of a first embodiment of a device according to the invention;
Fig. 2
a schematic representation of a second embodiment of a device according to the invention;
Fig. 3
a representation in the direction of arrow "A" in Fig. 2,
Fig. 4
a schematic representation of a third embodiment of a device according to the invention;
Fig. 5
a modification of the device according to FIG. 3;
Fig. 6
a section along the line VI-VI in Fig. 5;
Fig. 7
a schematic representation of the operation of the device;
Fig. 8
a modification of the device according to FIG. 5;
Fig. 9
a section along the line IX-IX in Fig. 8;
Fig. 10
a schematic representation of a fourth embodiment of an inventive device and
Fig. 11
is a schematic representation of a fifth embodiment of an inventive device.

Die hier in Rede stehenden erfindungsgemässen Vorrichtungen werden in Zusammenhang mit den Elementen der Webmaschine beschrieben, welche auf den Verlauf der Kettspannung einwirken.The inventive in question here Devices are related to the elements the weaving machine described, which on the course of the Apply warp tension.

Wie die Figuren 1, 2, 4 und 5 zeigen, ist die Webkette 1 von einem Kettbaum 2 über einen Umlenkbaum 3, und einen Webkettenspanner 4 sowie durch die Webschäfte 5 und ein Webblatt 6 und das Gewebe 7 über eine Warenabzugeinrichtung 8 geführt. Der Kettbaum 2 ist mit einer Kettablasseinrichtung 9 versehen. Der Webkettenspanner 4 hat hierbei die Webkette 1 während des Webvorganges mit einer Spannung zu beaufschlagen. Der Webkettenspanner 4 ist in Leichtbauweise ausgeführt und mehrfach abgestützt und umfasst ein Spannelement 11 und eine Stütze 12, auf dem das Spannelement drehbar gelagert ist und die an einem Tragbaum 14 gehalten ist, derart, dass das Spannelement 11 um die Achse 15 schwenkbar ist.As FIGS. 1, 2, 4 and 5 show, the warp is 1 from a warp beam 2 via a deflection beam 3, and one Warp tensioner 4 and through the heald frames 5 and a Reed 6 and the fabric 7 over a Goods removal device 8 guided. The warp beam 2 is with a warp let-off device 9. The Warp tensioner 4 has the warp 1 during To apply tension to the weaving process. The Warp tensioner 4 is lightweight and supported several times and includes a clamping element 11 and a support 12 on which the clamping element is rotatably mounted and which is held on a support tree 14, such that the clamping element 11 is pivotable about the axis 15.

Es wird auf die Fig. 1 Bezug genommen. Mindestens ein Hebel 16 ist am Tragbaum 14 befestigt und mit einer Luftfeder 21 verbunden, die Teil einer nachfolgend beschriebenen Regelvorrichtung ist. Die Luftfeder 21 ist einerseits auf dem Webmaschinenrahmen 17 abgestützt und andererseits mittels eines Organs 18 mit dem Hebel 16 verbunden, derart, dass die Luftfeder 21 in Richtung des Doppelpfeiles B verstellbar ist. Die Regelvorrichtung enthält die erwähnte Luftfeder 21, ein elektrisch betätigtes Regelventil 22 mit Abluftventil, einen Sensor 23 zum Abtasten der Stellung des Webkettenspanners 4, eine Druckleitung 24, eine Verbindungsleitung 25 und eine Steuervorrichtung. Die Steuervorrichtung enthält eine Steuereinheit 31, die als Teil der Webmaschinensteuerung (nicht dargestellt) oder als separate Einheit ausgebildet ist und mit dem Terminal 32 der Webmaschine signalübertragend verbunden ist sowie eine Anordnung 26, um den Schwenkbereich des Webkettenspanners 4 festzulegen. Die Anordnung umfasst zwei Gruppen, die jeweils einen Behälter 33 und ein 2/2-Wege-Ventil 34 aufweisen und die in Serie geschaltet über eine Stichleitung 36 mit der Verbindungsleitung 25 verbunden sind. Zwecks Schwingungsdämpfung sind den Gruppen jeweils eine Drossel 35 zugeordnet. Das Regelventil 22 sowie die Ventile 34 und Drosseln 35 sind signalübertragend mit der Steuereinheit 31 verbunden.Reference is made to FIG. 1. At least one Lever 16 is attached to the support tree 14 and with a Air spring 21 connected, which is part of a subsequent described control device is. The air spring 21 is supported on the one hand on the weaving machine frame 17 and on the other hand by means of an organ 18 with the lever 16 connected such that the air spring 21 in the direction of Double arrow B is adjustable. The control device contains the aforementioned air spring 21, an electric actuated control valve 22 with exhaust valve, a sensor 23 for scanning the position of the warp tensioner 4, a pressure line 24, a connecting line 25 and one Control device. The control device includes one Control unit 31, which is part of the weaving machine control (not shown) or formed as a separate unit and with the terminal 32 of the weaving machine is connected to transmit signals and an arrangement 26, around the swivel range of the warp tensioner 4 to be determined. The arrangement includes two groups that each a container 33 and a 2/2-way valve 34 and which are connected in series via a Stub 36 connected to the connecting line 25 are. For the purpose of vibration damping, the groups are each assigned a throttle 35. The control valve 22 and the Valves 34 and throttles 35 are signal-transmitting with the Control unit 31 connected.

Nachfolgend wird die Funktion der Vorrichtung beschrieben. Am Terminal 32 erfolgt die Einstellung der Sollstellung des Webkettenspanners, die Festlegung des Schwenkbereiches des Webkettenspanners, die Kettfadenzugkraft und die Einstellung der Dämpfung. Mit der Einstellung der Sollwerte wird der Regelkreis gebildet aus Sensor 23, Regelventil 22 und Luftfeder 21 aktiviert und der Webkettenspanner durch Druckbeaufschlagung der Luftfeder und Ansteuerung des Kettablasses in die mittlere Sollstellung gestellt und durch den Regelkreis immer in dieser gehalten. Treten Abweichungen von der Sollstellung auf, welche eine Abweichung in der Kettspannung zur Folge hat, so wird das Signal aus dem Positionssensor oder ein Signal eines Kettkraftsensors zur Ansteuerung der Kettablassvorrichtung oder zur Aenderung des Luftdruckes der Luftfeder verwendet, um die Soll-Kettspannung und die Sollstellung des Webkettenspanners wieder herzustellen. Anstelle des Signals des Kettkraftsensors ist es möglich, ein vom Luftdruck in der Luftfeder abgeleitetes Signal anzuwenden.The following is the function of the device described. Terminal 32 is used to set the Target position of the warp tensioner, the determination of the Swivel range of the warp tensioner, the Warp tension and damping adjustment. With The control loop becomes the setting of the setpoints formed from sensor 23, control valve 22 and air spring 21 activated and the warp tensioner through Pressurizing the air spring and controlling the Warp let down in the middle target position and always kept in this by the control loop. To step Deviations from the target position, which one Deviation in the warp tension, so it will Signal from the position sensor or a signal from a Warp force sensor for controlling the Warp let-off device or to change the air pressure The air spring used the target warp tension and the To restore the desired position of the warp tensioner. Instead of the signal from the warp force sensor, it is possible to a signal derived from the air pressure in the air spring to apply.

Bekanntlich ist die Kettspannung von der Art des herzustellenden Gewebes abhängig. Während bei Geweben mit hoher Schussdichte eine höhere Fadenzugkraft und ein kleiner Schwenkbereich erforderlich ist, wird für Gewebe mit geringer Schussdichte eine konstante Fadenzugkraft und ein grösserer Schwenkbereich gefordert. Mit anderen Worten die Federsteifigkeit der Luftfeder muss geändert werden, d.h. bei den bekannten Webkettenspanner muss die Feder ausgetauscht werden. Dies hat die bereits angesprochenen Nachteile zur Folge.As is known, the warp tension is of the type of depending on the fabric to be manufactured. While with fabrics with high weft density a higher thread tension and a Small swivel range is required for tissue a constant thread tension with low weft density and a larger swivel range is required. With others Words the spring stiffness of the air spring needs to be changed become, i.e. with the well-known warp tensioners, the Spring to be replaced. This already has mentioned disadvantages result.

Bei der hier in Rede stehenden Vorrichtung wird durch das Oeffnen eines oder mehrerer Ventile 34 ein oder mehrere Behälter 33 der Luftfeder 21 zugeschaltet. Somit wird das Volumen vergrössert mit der Folge, dass die Federsteifigkeit der Luftfeder 21 verändert wird. Dadurch werden unterschiedliche Federglieder von der Steuereinheit 31 aus nachgebildet. Ferner ist eine Messleitung 37 für den Druck in der Luftfeder 21 vorgesehen.In the device in question is by Open one or more valves 34 one or more Container 33 of the air spring 21 switched on. So it will Volume increases with the consequence that the Spring stiffness of the air spring 21 is changed. Thereby different spring links from the Control unit 31 reproduced from. Furthermore, one Measuring line 37 for the pressure in the air spring 21 intended.

Bekanntlich wird die Kettfadenzugkraft zur Hauptsache durch die Fachbildung verändert, so dass periodische Kettspannungsschwankungen auftreten. Bei schweren Geweben wird eine hohe Kettspannung gewählt und die Schwankungen durch die Elastizität der Kettfäden aufgenommen, während bei leichten Geweben eine niedere Kettspannung vorgesehen wird und die Schwankungen durch den Webkettenspanner ausgeglichen werden.As is well known, the warp thread pull becomes the main thing changed by subject training so that periodic Warp tension fluctuations occur. For heavy tissues a high warp tension is chosen and the fluctuations absorbed by the elasticity of the warp threads, while a low warp tension is provided for light fabrics and the fluctuations caused by the warp tensioner be balanced.

Mit der vorstehend beschriebenen Vorrichtung können in vorteilhafter Weise diese Schwankungen beeinflusst werden und zwar durch die Aenderung der Federsteifigkeit der Luftfeder. Der Webkettenspanner kann somit für einen teilweisen Ausgleich der Webkettenspannung bei der Bildung eines Webfaches verwendet werden, d.h. bei der Fachbildung gibt der Webkettenspanner einen Teil der für die Fachöffnung benötigten Kettlänge frei und nimmt diesen beim Fachschluss wieder auf.With the device described above in these fluctuations are advantageously influenced by changing the spring stiffness of the Air spring. The warp tensioner can thus for one partial compensation of the warp tension at the Formation of a shed can be used, i.e. in the The warp tensioner gives part of the training for the warp opening required the chain length freely and takes this again at the close of the subject.

Durch das elastische Verhalten der Webkette treten im Betrieb Schwingungen auf. Um diese Schwingungen zu dämpfen, sind regelbare Drosselventile 35 den Behältern 33 vorgeschaltet.Due to the elastic behavior of the warp in the Operation vibrations on. To these vibrations too dampen, adjustable throttle valves 35 are the containers 33 upstream.

Es wird auf die Figuren 2 und 3 Bezug genommen. Die Figuren zeigen eine Ausführungsform der Vorrichtung, welche sich von der Ausführungsform gemäss Fig. 1 durch die Anordnung der Luftfeder 21 und durch eine Anordnung 27 zur Festlegung des Schwenkbereiches des Webkettspanners 4 unterscheidet. Bei dieser Anordnung sind die Gruppen bestehend aus Behälter 33, 2/2-Wege-Ventil 34 und Drossel 35 parallel geschaltet und über die Stichleitung 36 mit der Verbindungsleitung 25 verbunden sind. Wie aus Fig. 3 ersichtlich ist, sind eine Mehrzahl von Webkettenspannern 4 vorgesehen und jedem Webkettenspanner 4 ist mindestens eine Luftfeder 21 zugeordnet. Die Luftfedern 21 sind an einem Träger 38 befestigt, der Teil einer detailliert dargestellten Webmaschine ist (Fig. 3).Reference is made to FIGS. 2 and 3. The Figures show an embodiment of the device, which differs from the embodiment according to FIG. 1 the arrangement of the air spring 21 and by an arrangement 27 to determine the swivel range of the Webkettspanners 4 differs. With this arrangement are the groups consisting of container 33, 2/2-way valve 34 and throttle 35 connected in parallel and via the branch line 36 to the connecting line 25 are connected. As can be seen from Fig. 3, are A plurality of warp tensioners 4 are provided and each Warp tensioner 4 is at least one air spring 21 assigned. The air springs 21 are on a carrier 38 attached, part of a detailed Loom is (Fig. 3).

Die Fig. 4 zeigt eine Ausführungsform der Vorrichtung, die im wesentlichen gleich aufgebaut ist, wie die Vorrichtungen gemäss Figuren 1 und 2 und sich von diesen darin unterscheidet, dass eine Einrichtung 41 vorgesehen ist, um den Druck in der Luftfeder 21 zu variieren. Diese Einrichtung umfasst eine Luftfeder 42 und einen Betätigungsmechanismus mit einer Nockenscheibe 43 und einem elektrischen Antrieb 44, der mit der Steuereinrichtung 31 verbunden ist.4 shows an embodiment of the device, which is constructed essentially the same as that Devices according to Figures 1 and 2 and of these differs in that a device 41 is provided is to vary the pressure in the air spring 21. This Device includes an air spring 42 and one Actuating mechanism with a cam disk 43 and an electric drive 44, which with the Control device 31 is connected.

Anstelle der vorstehend beschriebenen Einrichtung kann ein Regelkreis angewendet werden, um die Luftfeder 42 periodisch zu beaufschlagen. Hierbei kann in den Regelkreis ein separates 3/3-Wege-Ventil 45, das über Rückschlagventile 46 mit der Stichleitung 36 verbunden ist oder das Regelventil 22 als Stellglied vorgesehen werden. Mittels diesen Einrichtungen wird die Kettspannung z.B. zum Zeitpunkt des Blattanschlages erhöht, wodurch in vorteilhafter Weise die Schussdichte des Gewebes erhöht wird und zum Zeitpunkt der Fachdurchkreuzung erhöht wird, um die Fachteilung beim Oeffnen des Webfaches verbessert.Instead of the device described above can a control loop can be applied to the air spring 42 periodically charged. This can be done in the Control circuit a separate 3/3-way valve 45 that over Check valves 46 connected to the branch line 36 is or the control valve 22 is provided as an actuator become. Using these facilities, the Warp tension e.g. at the time of leafing increases, thereby advantageously the shot density of the tissue is increased and at the time of Subject crossing is increased to the division at Improved opening of the shed.

Es wird auf die Figuren 5 bis 7 Bezug genommen. Die Fig. 5 zeigt einen mit einen Spannbaum 11 versehenen Webkettenspanner 4, der verschiebbar auf dem Maschinenrahmen 17 einer Webmaschine angeordnet ist. Die für die Führung des Webkettenspanners erforderlichen Elemente sind nicht dargestellt. Wie die Fig. 5 weiter zeigt, ist eine Luftfeder 51 einerseits mit dem Webkettenspanner und andererseits mittels einer Gelenkanordnung 52 mit dem Träger 38 verbunden. Die Luftfeder 51 ist über die Verbindungsleitung 25 mit der hier nicht dargestellten Regelvorrichtung verbunden. Der Spannbaum 11 ist auf einer Mehrzahl von Webkettenspannern 4 abgestützt, die in frei wählbaren Abständen, die gleich oder unterschiedlich sein können angeordnet sind (Fig. 6). Die Gelenkanordnung 52 ist so ausgestaltet, dass die Luftfeder 51 um eine vertikale Achse 53 schwenkbar ist. Wie Fig. 7 zeigt, kann der Spannbaum 11 in der Längserstreckung verformt und die auf die Kettfäden einwirkende Fadenzugkraft im wesentlichen gleich hoch gehalten werden (Fig. 7).Reference is made to FIGS. 5 to 7. The Fig. 5 shows a provided with a spanning tree 11 Warp tensioner 4, which is slidable on the Machine frame 17 of a loom is arranged. The required for guiding the warp tensioner Elements are not shown. Like Fig. 5 further shows is an air spring 51 on the one hand with the Warp tensioner and on the other hand by means of a Joint arrangement 52 connected to the carrier 38. The Air spring 51 is connected via the connecting line 25 to the connected control device not shown here. The Spanning tree 11 is on a plurality of warp tensioners 4 supported, at freely selectable intervals, the same or can be arranged differently (Fig. 6). The joint arrangement 52 is designed that the air spring 51 about a vertical axis 53 is pivotable. As shown in FIG. 7, the spanning tree 11 deformed in the longitudinal extent and the on the Warp tension acting essentially warp are kept equally high (Fig. 7).

Es wird auf die Figuren 8 und 9 Bezug genommen. Wie die Fig. 8 zeigt, sind anstelle des einteiligen Spannbaumes 11 gemäss Fig. 6 eine Anzahl von Teilspannbäumen 61 vorgesehen. Jeden dieser Teilspannbäume ist mindestens ein Webkettenspanner 4, eine Luftfedern 51 und eine Regelvorrichtung der vorstehend beschriebenen Art zugeordnet. Mittels der Teilspannbäume 61 ist es möglich, im wesentlichen die in Fig. 7 dargestellte Verformung nachzuvollziehen. Um eine durchgehende Spannfläche für die Kettschar zu erzielen, werden an den Schnittstellen der Teilspannbäume 61 jeweils Verbindungsorgane 62 vorgesehen. Die Verbindungsorgane weisen einen Mittelabschnitt 63 und zwei Einsetzabschnitte 64 mit balliger Mantelfläche auf.Reference is made to FIGS. 8 and 9. As the Fig. 8 shows are instead of the one-piece spanning tree 11 according to FIG. 6 a number of partial spanning trees 61 intended. Each of these partial spanning trees is at least a warp tensioner 4, an air spring 51 and one Control device of the type described above assigned. By means of the partial spanning trees 61 it is possible essentially the deformation shown in Fig. 7 understand. To have a continuous clamping surface for The chain coulters are achieved at the interfaces of the partial spanning trees 61 each have connecting members 62 intended. The connecting members have one Middle section 63 and two insert sections 64 with crowned outer surface.

Die Fig. 10 zeigt eine Vorrichtung, die hydropneumatisch betätigt wird, um die Stellung des Webkettenspanners 4 einzustellen. Bei dieser Vorrichtung ist neben der Luftfeder 21 mit dem Regelkreis für die Druckregelung und dem Regelkreis für die Volumenänderung zusätzlich ein Stellelement 71 z.B. einem Balg, der einerseits mit der Luftfeder 21 verbunden ist und andererseits am Träger 38 abgestützt bzw. befestigt ist und ein elektrisch betätigbares Regelventil 72 vorgesehen, welches einerseits über eine Leitung 73 mit dem Stellelement 71 und andererseits über eine Leitung 74 mit einer Hydraulikquelle (nicht dargestellt) verbunden ist. Um das Volumen im Behälter 33 zu ändern, ist bei dieser Vorrichtung ein 2/2-Wege-Ventil 75 vorgesehen, das einerseits über die Leitung 74 mit der Hydraulikquelle und andererseits mit dem Behälter 33 verbunden ist. Das Regelventil 72 und 2/2 -Wege-Ventil 75 sind signalübertragend mit der Webmaschinensteuereinrichtung 31 verbunden.Fig. 10 shows a device that is hydropneumatic is operated to the position of the warp tensioner 4th adjust. In this device, in addition to the Air spring 21 with the control circuit for pressure control and the control loop for the volume change Actuator 71 e.g. a bellows, on the one hand, with the Air spring 21 is connected and on the other hand on the carrier 38 is supported or attached and an electrical actuatable control valve 72 is provided, which on the one hand via a line 73 with the actuating element 71 and on the other hand via a line 74 with a Hydraulic source (not shown) is connected. To do that Changing the volume in the container 33 is with this Device provided a 2/2-way valve 75, the on the one hand via line 74 to the hydraulic source and on the other hand is connected to the container 33. The Control valve 72 and 2/2-way valve 75 are signal-transmitting with the weaving machine control device 31 connected.

Die Fig. 11 zeigt eine Vorrichtung, die pneumatisch und mechanisch betätigt wird, um die Stellung des Webkettenspanners 4 zu ändern. Hierzu ist eine Kolbenanordnung 77 mit einem Antrieb 78 vorgesehen, der mit der Webmaschinensteuereinrichtung 31 signalübertragend verbunden ist, um die Anordnung 77 vom Terminal 32 aus anzusteuern.Fig. 11 shows a device which is pneumatic and is operated mechanically to the position of the To change warp tensioner 4. This is a Piston assembly 77 provided with a drive 78 which with the weaving machine control device 31 is connected to transmit the arrangement 77 from To control Terminal 32 from.

Nachzutragen ist noch, dass die Spannbäume 11, 61 rohrförmig ausgebildet sind und mit Vorteil mit einem Füllmaterial (nicht dargestellt) versehen sind, um die Knickung der Rohre zu verhindern. Die Rohre können aus Metall oder Nichtmetall bestehen.It should also be added that the tension trees 11, 61 are tubular and advantageously with a Filling material (not shown) are provided to the To prevent kinking of the pipes. The pipes can be made Metal or non-metal.

Die Vorrichtung enthält ein Federglied 21, das mit dem Webkettenspanner 4 in Wirkverbindung steht und eine Regelvorrichtung die einen über ein 2/2-Wege-Ventil 34 mit dem Federglied 21, 51 kommunizierenden Behälter 33 aufweist, um mittels Erhöhung und Reduzierung des Volumens der Luftfeder die Federsteifigkeit des Federgliedes und die Stellung des Webkettenspanners von einem Terminal auf der Weberstandseite zentral zu ändern.The device includes a spring member 21 which with the Warp tensioner 4 is in operative connection and one Control device one via a 2/2-way valve 34 container 33 communicating with the spring member 21, 51 has to increase and decrease the Volume of the air spring the spring stiffness of the Spring link and the position of the warp tensioner by to change a terminal centrally on the Weber booth site.

Claims (14)

  1. Apparatus for the control of a warp tensioner (4) comprising a spring member (21, 51) which contains a fluid which is connectable in fluid conducting manner via a regulating valve (22) to a pressure line and is connectable to a warp tensioner (4), and further comprising a regulating device which contains a sensor (23) for sensing the position of the warp tensioner and includes the regulating valve (22) in order to vary the spring force of the spring member by means of increasing and decreasing the pressure for the purpose of adjusting a tensioner beam (11, 61) arranged at the warp tensioner (4), characterised in that the regulating device has at least one container (33) communicating with the spring member (21, 51) via a shut-off member (34) and in that the container (33) serves to switchably increase and decrease the volume of the spring member (21, 51) in order to vary its stiffness.
  2. Apparatus in accordance with claim 1, characterised by a plurality of containers (33) and of shut-off members (34) which are connected in series or in parallel.
  3. Apparatus in accordance with one of the claims 1 or 3, characterised in that a restrictor (35) is associated with each container (33).
  4. Apparatus in accordance with one of the claims 1 to 3, characterised in that the regulating device (22), the blocking member (34) and the restrictor (35) are connected in a signal transmitting manner to a control system (31) and/or to a terminal (32).
  5. Apparatus in accordance with one of the claims 1 to 4, characterised by a device (41) which is connected to the spring member (21) and is intended for the purpose of varying the pressure in the spring member (21).
  6. Apparatus in accordance with claim 5, characterised by a second spring member (42) which is connected in a communicating manner to the spring member (21).
  7. Apparatus in accordance with one of the claims 5 or 6, characterised by means (43, 44) for actuating the second spring member (42).
  8. Apparatus in accordance with one of the claims 1 to 4, characterised in that the regulating valve (22) is a setting member of a regulating circuit which is intended to control the regulating valve (22) in the sense of a change of pressure in the spring member (21).
  9. Apparatus in accordance with one of the claims 5 to 8, characterised in that the second spring member (42) and/or the regulating valve (22) can be periodically controlled or actuated.
  10. Apparatus in accordance with one of the claims 1 to 9, characterised by a hydraulically actuatable setting element (71) which is connected to the spring member (21), and by an electronically actuatable regulating valve (72) for the actuation of the setting element (71), with the setting element (71) communicating with the regulating valve (72) via a line (73) in order to vary the position of the warp tensioner (4).
  11. Apparatus in accordance with one of the claims 1 to 10, characterised by a valve (74) which communicates with the container (33) via a line (75) in order to vary the volume of the container (33) by hydraulic fluid.
  12. Apparatus in accordance with one of the claims 1 to 11, characterised by a piston arrangement (77) having a drive (78) which is in active connection with the warp tensioner (4) in order to vary the position of the warp tensioner (4).
  13. Warp tensioner with an apparatus in accordance with one of the claims 1 to 12, with the warp tensioner containing a tensioner beam, characterised in that the tensioner beam (11) is designed so as to consist of one piece or of a plurality of elements; and in that at least one spring member (21, 51) is associated with the tensioner beam or with each tensioner beam element (61).
  14. Warp tensioner in accordance with claim 13, characterised in that the tensioner beam (11, 61) is of tubular design and consists of a metal or a non-metal.
EP96810773A 1996-11-12 1996-11-12 Device for controlling the warp thread tension and loom using such device Expired - Lifetime EP0841418B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59608400T DE59608400D1 (en) 1996-11-12 1996-11-12 Device for controlling a warp tensioner and weaving machine with this device
EP96810773A EP0841418B1 (en) 1996-11-12 1996-11-12 Device for controlling the warp thread tension and loom using such device
US08/947,400 US5890519A (en) 1996-11-12 1997-10-08 Apparatus for controlling a warp tensioner of a weaving machine
JP30727997A JP3875782B2 (en) 1996-11-12 1997-11-10 Device for controlling warp tensioner and loom equipped with the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810773A EP0841418B1 (en) 1996-11-12 1996-11-12 Device for controlling the warp thread tension and loom using such device

Publications (2)

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EP0841418A1 EP0841418A1 (en) 1998-05-13
EP0841418B1 true EP0841418B1 (en) 2001-05-23

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Application Number Title Priority Date Filing Date
EP96810773A Expired - Lifetime EP0841418B1 (en) 1996-11-12 1996-11-12 Device for controlling the warp thread tension and loom using such device

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US (1) US5890519A (en)
EP (1) EP0841418B1 (en)
JP (1) JP3875782B2 (en)
DE (1) DE59608400D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740309A1 (en) * 1997-09-13 1999-06-10 Dornier Gmbh Lindauer Method and device for adjusting a match tree and warp guard of a weaving machine to produce a specific shed geometry
EP0937796A1 (en) * 1998-02-18 1999-08-25 Sulzer Rüti Ag Warp threads tensioning device for a loom and loom with such a device
TWI303679B (en) * 2003-06-12 2008-12-01 Textilma Ag Loom
US7182769B2 (en) * 2003-07-25 2007-02-27 Medtronic, Inc. Sealing clip, delivery systems, and methods
EP2707625B1 (en) * 2011-05-13 2019-09-25 Litens Automotive Partnership Intelligent belt drive system and method
DE102013219942A1 (en) * 2013-10-01 2015-04-02 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Method and device for applying forces and movements to warp threads of a loom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1209315A (en) * 1967-04-21 1970-10-21 English Electric Co Ltd Fluidic operated thread tensioning devices
CS148395B1 (en) * 1969-09-05 1973-02-22
CH664389A5 (en) * 1984-10-16 1988-02-29 Saurer Ag Adolph DEVICE FOR CONTROLLING THE warp thread tension by shifting the position of a coating beam on a weaving machine.
DE3833685A1 (en) * 1988-10-04 1990-04-05 Mertens & Frowein Gmbh & Co Kg Device for warp-thread tension on weaving machines
DE9304801U1 (en) 1993-04-02 1993-05-27 Chemnitzer Webmaschinenbau GmbH, O-9010 Chemnitz Device for tensioning the warp threads on weaving machines
BE1009719A3 (en) * 1995-10-24 1997-07-01 Wiele Michel Van De Nv System under power market under chain ​​wires on a tree stand.

Also Published As

Publication number Publication date
JPH10140442A (en) 1998-05-26
EP0841418A1 (en) 1998-05-13
JP3875782B2 (en) 2007-01-31
DE59608400D1 (en) 2002-01-17
US5890519A (en) 1999-04-06

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