EP0761857B1 - Steuersystem für die Polkette zur Herstellung von Frottiergewebe auf Webmaschinen - Google Patents

Steuersystem für die Polkette zur Herstellung von Frottiergewebe auf Webmaschinen Download PDF

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Publication number
EP0761857B1
EP0761857B1 EP96111877A EP96111877A EP0761857B1 EP 0761857 B1 EP0761857 B1 EP 0761857B1 EP 96111877 A EP96111877 A EP 96111877A EP 96111877 A EP96111877 A EP 96111877A EP 0761857 B1 EP0761857 B1 EP 0761857B1
Authority
EP
European Patent Office
Prior art keywords
control system
tension
pile warp
terry
warp
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
EP96111877A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0761857A1 (de
Inventor
Walther Truyen
Adnan Dr. Wahhoud
Peter Czura
Hans-Dieter Dr. Scorl
Josef Hehle
Werner Birner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0761857A1 publication Critical patent/EP0761857A1/de
Application granted granted Critical
Publication of EP0761857B1 publication Critical patent/EP0761857B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/22—Terry looms
    • D03D39/223—Cloth control

Definitions

  • the invention relates to a control system for influencing the tension in a Pile chain and to provide pile warp threading rates for loop formation when producing terry fabrics on weaving machines according to the characteristics of The preamble of claim 1.
  • DE-PS 43 10 840 C1 a method and an apparatus for Influencing the tension in a pile of warp threads during the manufacture of Terry fabrics on weaving machines.
  • the dancer shaft assembly are designed to further increase the Efficiency of the weaving machine, i.e. the increase in speed, in dynamic Movement limits.
  • the limits of the dynamic movement sequence become clear, among other things, in that the pole chain guided over the dancer shaft is relieved in the period of the firing group attack in such a way that the pole chain lifts off the surface of the dancer shaft.
  • This fact and the existing twist of the warp threads then lead to crossings of the warp threads with one another.
  • the warp threads are twisted so that the pile formation is disturbed and warp thread breaks are not excluded.
  • the warp let-off device of the warp let-off device causes the pile warp mass to oscillate between the pile warp beam and the stop edge of the fabric, which likewise has a disadvantageous effect on the correct guidance of the pile chain.
  • the object of the invention is therefore to provide a control system for influencing the pile warp tension and for providing a pile warp thread delivery rate in the production of terry toweling, in which system for further increasing the performance of the weaving machine the integral functions of the dancer shaft can be detached from this and assigned to separate devices. Furthermore, it is an object of the invention to largely switch off the oscillation of the warp thread mass when lowering the chain and, in particular, to maintain a constant warp tension between the deflecting roller and the dancer shaft on the one hand and between the deflecting roller and the pile warp beam on the other hand while the weft groups are striking.
  • the object is achieved by firstly a control system one each on the rear weaving machine cheeks in a storage location rotatably arranged support member, in the vertically spaced from it Axis of rotation is supported a dancer shaft under tension and that at least one terry drive known per se for moving tissue with at least one of the support elements is operatively connected and thereby between the A synchronous movement of the terry drive and the movement of the dancer shaft There is a sequence of movements.
  • the dancer shaft is eccentric in the Support elements is mounted and thereby the shaft as such compared to the The axis of rotation of the support element can be deflected.
  • a deflection lever swings the dancer shaft so that a certain rate of the pole chain wrapping around the dancer wave, i.e. a so-called Pile warp thread release rate is released towards fabric formation without doing so relieve the pole chain from the chain tension so far that the pole chain is on it wraps around the outer surface of the dancer shaft.
  • the dancer shaft has at its free ends a spring tensioning mechanism adjustable in this way is linked to the fact that one on the dancer wave and thus on the pole chain Tension is exerted in balance to the required Basic tension of the pole chain is established.
  • the spring tension mechanism ensures its independent effectiveness of the terry drive that a length compensation of the Pole chain can be done.
  • a controlled working unit acts on each spring tensioning mechanism, preferably a pneumatically operated piston-cylinder unit, which is capable of closing the dancer shaft around its eccentrically arranged axis of rotation at a certain point in the weaving process, namely shortly before the weft group stop pivot that the pile warp provides a given pile warp delivery rate during the weft group attack while maintaining the warp tension. Due to the fact that when the spring retraction is partially relieved, the dancer shaft does not lift off the pile chain in the direction of the fabric, but only swivels about its axis of rotation, the desired advantageous effect is achieved that, although the necessary pile warp thread delivery rate is provided, a necessary amount of pile warp thread tension is obtained at the same time remains.
  • the spring tensioning mechanism is at least one deflecting lever which is firmly connected to the dancer shaft, at the free end portion of which one end of at least one tension spring is articulated at a pivot point, while the other end of the spring is connected to the support element Draw bolt attacks.
  • the tension bolt is also connected to a threaded spindle which is supported on the support element and which serves to adjust the spring tension.
  • the threaded spindle can be connected to an appropriate drive means, such as a motor drive.
  • warp tension measuring device detects the between the deflection roller and the chain tension to be maintained by the dancer wave.
  • the warp tension value and, if necessary, the Clamping manually via the threaded spindle or as part of a target / actual value comparison within the machine control the setpoint as an analog signal the motor connected to the threaded spindle for regulating the clamping force be fed.
  • the deflecting roller is connected to a controlled motor drive in order to feed the continuous pile chain, provided by the warp let-off of the pile warp beam, to the weaving process while maintaining a constant pile chain tension between the deflection roller and the dancer shaft. It is important here that the drive of the deflecting roller can also be controlled as a function of the tension values determined by the tension measuring device.
  • a pile warp beam 2 is rotatably mounted about an axis that is accommodated in the carrier 3 and is not visible.
  • the pole chain 4 is guided from the pile warp beam 2 in a manner known per se, including a known warp let-off device, not shown, to a motor-driven deflection roller 5 while passing a tension roller 7 which is position-changing in the direction of the double arrow 6 and is also mounted on the carrier 3.
  • the pole chain 4 subsequently arrives at a dancer shaft 8, which is connected in a first and a second support element 9 on the rear side cheeks 10 in a bearing 11 to a pin 12 and is rotatably supported.
  • the support element 9 is designed in the manner of an angle lever which has a vertical leg 9a and a horizontal leg 9b.
  • the pin 12 is firmly connected to the leg 9a.
  • each leg 9a Spaced from the central axis 12a, see also FIG. 2, of the pin 12, each leg 9a has a bearing point 13, in which a shaft 14, which is fixedly connected to the dancer shaft 8 and is arranged eccentrically to the central axis 8a of the dancer shaft 8, is rotatably received.
  • a coupling 16 is articulated, while the other end is connected to a terry drive 17 known per se.
  • the terry drive is used to control an oscillating displacement of the fabric 18 relative to the fixed attachment point 19, at which the weft group, not shown, is struck by the reed 22, which is connected to the sley 21 pivotally mounted about the axis of rotation 20.
  • the known terry toweling drive 17 consists of a terry toweling shaft 23, on which at least one eccentric 24 is arranged in a rotationally fixed manner, on the cam track of which a scanning roller 26a mounted in a control lever 26 abuts.
  • a first coupling 27 is articulated on the control lever 26 and is connected to a second coupling 29 via a connecting piece 28.
  • the coupling 29 is articulated on a lever 31 which is connected to a drawing-in roller 32 which oscillates the fabric 18 in the direction of the double arrow 30; this connection is not shown.
  • a basic warp beam 41 is rotatably mounted in the rear side cheek 10 of the weaving machine 1.
  • the basic chain 40 is guided from the basic warp beam 41 via a deflecting roller 42 and a match beam 43 to the shedding organs, which are indicated schematically here by a jacquard device 39 with harness cords 38 and retraction springs 37.
  • the coating roller 43 is received here for executing a so-called basic terry movement after terry drive 17 at one end of a double lever 47 loaded by a spring 47a.
  • the double lever 47 is mounted in the fulcrum 47b.
  • the fulcrum 47b is located in a one-armed lever 45 which can be pivoted about a machine-fixed axis 45a.
  • a coupling 44 is articulated, which is operatively connected to the control lever 26 of the terry drive 17.
  • a coupling 16 is articulated, which connects the support element 9 to the terry drive 17.
  • the terry movement is transmitted to the support element 9 in synchronism with the rotary drive of the eccentric 24 via the scanning roller 26a connected to the control lever 26.
  • a bearing point 13 is provided in the support element 9 at a vertical distance from the central axis 12a of the pin 12.
  • Such a shaft 14 extends with a necessary length dimension on both sides into the dancer shaft 8 designed as a tube.
  • a U-shaped deflection lever 48 is fixedly arranged on the outer circumference of the free end regions of the dancer shaft 8. On the deflection lever 48, one end of at least one tension spring or a tension spring assembly 49 engages on a connecting element 50. The other end of the spring 49 is articulated on a spring tensioning mechanism 51 provided on the horizontal leg 9b of the support element 9. The spring tensioning mechanism 51 is supported on the horizontal leg 9b of the support 9.
  • FIG. 3 shows the deflection position of the dancer shaft 8 and that of the support element 9 during the firing group attack by the reed 22 shown in FIG. 1.
  • the terry drive 17 here pivots the support element 9 about the pin 12 in the bearing 11 in the direction of the arrow 55 via the coupling 16.
  • the working unit 52 articulated in a fixed point 53 of the weaving machine which here, for example, is a double-acting, pneumatically operated Piston-cylinder unit is, in the direction of arrow 49, a pushing movement through the piston rod 52a onto the connecting element 50 of the articulation lever 48 which is fixedly connected to the dancer shaft 8.
  • the dancer shaft 8 pivots about the center axis 14a of the shaft 14 which is firmly connected to it and releases a warp thread dispensing rate 54. Due to the eccentric mounting of the dancer shaft 8 and the dancer shaft 8 which is only partially spring-loaded by the piston-cylinder unit 52, there is no disadvantageous lifting of the pole chain 4 from the circumference of the dancer shaft 8.
  • a pile warp tension measuring device 56 is integrated in FIG. 3 in the pile warp region between the deflection roller 5 and the dancer shaft 8.
  • the measuring device 56 is designed here, for example, as an absolute sensor, which communicates with the electronic control unit, not shown, of the weaving machine.
  • a comparison of the warp lowering is influenced by a comparison of the target and actual values of the warp tension in the control unit and thereby regulating the polket voltage in a manner known per se. Furthermore, in the event of a deviation from the warp tension setpoint, the tensioning force of the spring 46 can be adjusted by means of the spring tensioning mechanism 51.
  • a link guide 57 is provided in each leg 9b of the support element 9, in which a tension bolt 59 connected to a threaded spindle 58 is guided.
  • the tension bolt 59 has a side guide element 60 which has surface contact with the outer side surface of the leg 9b.
  • the free end of the threaded spindle 58 can be equipped with an electromotive actuator 61, as shown in FIG. 4.
  • FIG. 4 shows the mechanism 51 for tensioning the spring 46 which is connected to each support element 9.
  • a threaded spindle 58 is supported, for example, on an abutment 62 which is only partially shown and which is firmly connected to the support element 9.
  • the threaded spindle 58 is, for example, in threaded engagement with a screw part (not shown) equipped with an internal thread.
  • the screw part is part of the tension bolt 59, on which the spring 46 engages.
  • the free end of the threaded spindle 58 is connected here to a controllable electromotive actuator 61.
  • FIG. 5 shows the influence of the working unit 52 on the dancer shaft 8 to provide a pile warp threading rate 54 before the weft group stop of the reed 22 shown in FIG. 1.
  • the work unit is designed as a double-acting, pneumatically operated piston-cylinder unit.
  • the cylinder chamber 52b on the piston rod side and the cylinder chamber 52c on the piston side are each connected to a controlled quick exhaust valve 63, 64.
  • a working or output line 65, 66 leading to each valve 63, 64 leads via a corresponding controllable valve 67, 68 and via line 69 to a pressure source, not shown.
  • the deflection lever 48 By acting on the piston-side cylinder chamber 52c, the deflection lever 48, which is connected to the piston rod 52a, is deflected together with the dancer shaft 8, partially relieving the tensioning force of the spring 46, and a chain thread dispensing rate 54 is released to form a loop row in the course of the weft group attack.
  • a chain thread dispensing rate 54 As is known, no shot group formation takes place for border weaving. Accordingly, no warp thread delivery rate 54 may be provided.
  • the cylinder chamber 52b on the piston rod side is constantly pressurized for the time the border is raised or the movement of the piston rod 52a is at least blocked.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP96111877A 1995-08-17 1996-07-24 Steuersystem für die Polkette zur Herstellung von Frottiergewebe auf Webmaschinen Expired - Lifetime EP0761857B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19530222 1995-08-17
DE19530222A DE19530222C1 (de) 1995-08-17 1995-08-17 Steuersystem für die Polkette zur Herstellung von Frottiergewebe auf Webmaschinen

Publications (2)

Publication Number Publication Date
EP0761857A1 EP0761857A1 (de) 1997-03-12
EP0761857B1 true EP0761857B1 (de) 1998-12-09

Family

ID=7769685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111877A Expired - Lifetime EP0761857B1 (de) 1995-08-17 1996-07-24 Steuersystem für die Polkette zur Herstellung von Frottiergewebe auf Webmaschinen

Country Status (3)

Country Link
EP (1) EP0761857B1 (ja)
JP (1) JP2986738B2 (ja)
DE (2) DE19530222C1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3552595B2 (ja) 1999-06-28 2004-08-11 津田駒工業株式会社 布移動方式のパイル織機の地経糸送り出しテンション装置
DE10054851A1 (de) * 2000-05-12 2002-05-29 Dornier Gmbh Lindauer Frottierwebmaschine
DE10023445A1 (de) * 2000-05-12 2001-11-29 Dornier Gmbh Lindauer Frottierwebmaschine
ITUB20152354A1 (it) * 2015-07-21 2017-01-21 Itema Spa Dispositivo di regolazione della tensione dei fili di ordito del riccio in un telaio per la tessitura di spugna
DE102019208377B3 (de) * 2019-06-07 2020-04-23 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Vorrichtung zum Vergleichmäßigen der Bindepunktlinie beim Weben von Frottiergewebe
CN112323223B (zh) * 2020-09-29 2021-12-10 武汉纺织大学 一种间歇式回退主动经轴恒张力机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2710046B2 (ja) * 1986-12-04 1998-02-10 津田駒工業 株式会社 パイル織機のたて糸張力制御方法
JPH0718071B2 (ja) * 1988-07-27 1995-03-01 津田駒工業株式会社 サッカー織機
DE4005751A1 (de) * 1990-02-23 1991-08-29 Dornier Gmbh Lindauer Seersucker-einrichtung
DE4310840C1 (de) * 1993-04-02 1994-01-13 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Beeinflussung der Zugspannung in einer Polkettfadenschar beim Herstellen von Frottiergewebe auf Webmaschinen
IT1267447B1 (it) * 1993-09-13 1997-02-05 Toyoda Automatic Loom Works Procedimento ed apparecchio per la formazione del pelo in una macchina per la tessitura di tessuti a pelo.

Also Published As

Publication number Publication date
DE59600952D1 (de) 1999-01-21
JP2986738B2 (ja) 1999-12-06
DE19530222C1 (de) 1996-06-05
EP0761857A1 (de) 1997-03-12
JPH09111597A (ja) 1997-04-28

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