EP0224850B1 - Abzugsvorrichtung für die Stoffbahn einer Textilmaschine - Google Patents

Abzugsvorrichtung für die Stoffbahn einer Textilmaschine Download PDF

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Publication number
EP0224850B1
EP0224850B1 EP86116346A EP86116346A EP0224850B1 EP 0224850 B1 EP0224850 B1 EP 0224850B1 EP 86116346 A EP86116346 A EP 86116346A EP 86116346 A EP86116346 A EP 86116346A EP 0224850 B1 EP0224850 B1 EP 0224850B1
Authority
EP
European Patent Office
Prior art keywords
roll
pressure
take
pressing
presser
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
Application number
EP86116346A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0224850A1 (de
Inventor
Georg Senn
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0224850A1 publication Critical patent/EP0224850A1/de
Application granted granted Critical
Publication of EP0224850B1 publication Critical patent/EP0224850B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/20—Take-up motions; Cloth beams

Definitions

  • the invention relates to a take-off device for the fabric web of a textile, preferably a weaving machine, with a driven fabric take-off roller and a deflecting element for the fabric upstream or downstream thereof, the clear distance between the deflecting elements being smaller than the diameter of the material removal roller, and a pressing device acting on the circumference of the fabric take-off roller, with a pressing part extending essentially over the length of the fabric take-off roller.
  • a rail-shaped pressing part of springs is pressed against the fabric take-off roller.
  • This version brings satisfactory results for a certain material made of a certain material and of a certain web width, given the force of the springs.
  • Sensitive items such as certain fabrics made of synthetic or glass fibers can be damaged by the frictional forces between the fabric and the pressing part, so that pressing is undesirable during normal operation of the weaving machine, i.e. the pressing part is to be lifted off the fabric take-off roller. It is also necessary to lift the contact part off the fabric take-off roller when placing a new chain on the machine.
  • the movable fabric take-off roller is automatically pressed sufficiently strongly against the deflection elements by the normal tensile forces in the fabric web to pull off the fabric without slipping and to maintain the necessary warp tension. If the fabric train e.g. in the event of a malfunction in the warp let-off circuit or in the fabric drive that becomes so low that the self-generated contact pressure is no longer sufficient to ensure the non-slip fabric take-off, additional contact pressure is necessary.
  • the pressing device known from CH-PS 615 644 cannot meet the changing requirements for the contact pressure of the pressing part described above. According to the teaching of the patent specification CH-PS 615 644, the change in the contact pressure would only be possible with complex constructional means.
  • the invention has for its object to provide with simple means an improved fabric removal device that generates a uniform contact pressure across the entire width of the contact part and the contact pressure can be quickly and easily adapted to changing requirements.
  • this object is achieved by a fabric extraction device which has the characterizing features of the claims.
  • a fabric extraction device with hydraulically or hydraulically pneumatically generated contact pressure can also be advantageous.
  • a particularly rapid pressure build-up is achieved if a chamber of the hollow body contains liquid which is separated from the compressed air by a movable membrane. The compressed air acts on the liquid through the membrane. The pressure in the hollow body and thus also the contact pressure build up more quickly when it is switched on, since only a fraction of the volume of the hollow body has to be filled with compressed air.
  • the fabric web 10 is guided over the fixed inlet roller 12, the floating fabric take-off roller 13 and the likewise fixed outlet roller 14.
  • the clear width L between the inlet roller 12 and the outlet roller 14 is smaller than the outer diameter D of the fabric take-off roller 13. Due to the tensile force in the running direction in the fabric web 10, the floating fabric take-off roller 13 is pressed evenly against the inlet and outlet rollers 12, 14. The greater the tension in the fabric, the higher the contact pressure.
  • the floating fabric take-off roller 13, which is movable transversely to the longitudinal axis, is laterally driven via a ball or universal joint, not shown.
  • the inlet and outlet rollers 12, 14 can also be driven laterally at the peripheral speed of the fabric take-off roller 14 or can only be rotatably supported and be driven by the fabric take-off roller 13 via the fabric web 10.
  • the inlet roller 12 is often designed as a spreader roller, with a thread-like structure running in opposite directions from the center to both sides.
  • the pressing device 20 serves to increase the contact pressure of the fabric take-off roller 13 against the fabric web 10 and the inlet and outlet rollers 12, 14. It consists essentially of the U-shaped support profile 21 and the pressure rail 22 and the elastic pressure hose 23 as a flexible hollow body.
  • the pressure hose 23 is pressurized with compressed air via the inlet 24 and presses the pressure rail 22 (arrow) against the fabric web 10 and the fabric take-off roller 13. By changing the pressure in the pressure hose 23, the pressure is adjusted to the operating requirements. If the pressure hose 23 is completely relieved of pressure, the pressure rail 22 moves away from the fabric take-off roller 13 and no longer presses against the fabric web 10 and fabric take-off roller 13.
  • inlet and outlet rollers 12, 14 are rotatably mounted in trough-shaped recesses 32, 34 of the U-shaped holder arms 31, 33 of the holder 3.
  • a plurality of such holders 3 are arranged across the width of the weaving machine, all of which are fixedly connected to the machine frame 4.
  • the U-shaped carrier profile 21 of the pressing device 20 is fastened in the recess 30 of the holder 3.
  • the pressure rail 22 is e.g. Made of an elastic material, so that the contact surface trough-shaped adapts to the circumference of the fabric take-off roller 14 with the fabric web 10.
  • the contact surface can also be trough-shaped.
  • At least the contact surface of the contact part 22 advantageously consists of a material such as e.g. Nylon, Teflon, which exerts low frictional forces on the fabric web 10.
  • the surface of the pressing part 22 facing the pressure hose 23 is trough-shaped adapted to the surface of the hose 23.
  • FIG. 3 and 4 show a fabric take-off device 11 with a pressure roller 27 which is rotatably mounted on the rail 25.
  • This rail 25 made of a rubber or plastic material carries in a groove a metal rail 26 with a smooth surface, on which the pressure roller 27 is supported and rotated with low friction.
  • the pressure roller 27 can consist of metal or a plastic.
  • a fabric take-off device 11 is particularly gentle on the fabric if not only the fabric take-off roller 13 and the inlet and outlet rollers 12, 14, but also the pressure roller 27 which is movable transversely to the longitudinal axis (double arrow) is driven at the same peripheral speed. All four rollers 12, 13, 14, 27 are driven laterally, for example, with a gear drive driven by the main drive of the weaving machine via shafts and movable cardan or ball joints. If the compressed air is discharged into pressure hose 23, drive roller 27 and rail 25 lower under the influence of gravity.
  • the contact pressure of the pressure roller 27 against the fabric take-off roller 13 is adapted to the respective operating requirements by simply changing the pressure in the hose 23.
  • a pressure hose or a pressure chamber of the hollow body 23 is in turn assigned to each of these sections.
  • the compressed air is supplied to the pressure hose 23 of the material take-off device 20 from a Druci fragrance container 40 via the controllable valve 41, the pressure gauge 42 and the pressure relief valve 43.
  • the warp thread tension is continuously measured with the warp thread tension meter 44, 45.
  • the control unit 5 continuously receives the electrical warp tension signal from the converter 44 of the warp tension sensor 45.
  • a threshold value for the warp thread tension is set with the adjusting knob 51.
  • the highest air pressure in the pressure hose 23 that is permissible for a specific article, i.e. the maximum permissible contact pressure is set.
  • the valve 41 is opened and the pressure hose 23 is filled with compressed air from the compressed air tank 40.
  • the level of the pressure is measured by the manometer 42 and transmitted to the control electronics of the control unit 5 in the form of an electrical signal.
  • the valve 41 closes. If a lower pressure is required, the vent valve 43 releases enough air until the new setpoint pressure is reached. This venting process is also monitored by the manometer 42.
  • the push button 53 it is possible at any time to switch off the automatic and to apply compressed air to the pressure hose 23.
  • the push button 54 allows the automatic system to be switched off and the compressed air to be discharged from the pressure hose 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP86116346A 1985-12-06 1986-11-25 Abzugsvorrichtung für die Stoffbahn einer Textilmaschine Expired EP0224850B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH521385 1985-12-06
CH5213/85 1985-12-06

Publications (2)

Publication Number Publication Date
EP0224850A1 EP0224850A1 (de) 1987-06-10
EP0224850B1 true EP0224850B1 (de) 1989-07-26

Family

ID=4289836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116346A Expired EP0224850B1 (de) 1985-12-06 1986-11-25 Abzugsvorrichtung für die Stoffbahn einer Textilmaschine

Country Status (7)

Country Link
US (1) US4722369A (cs)
EP (1) EP0224850B1 (cs)
JP (1) JPS62141156A (cs)
BR (1) BR8605979A (cs)
CS (1) CS888586A2 (cs)
DE (1) DE3664648D1 (cs)
SU (1) SU1524813A3 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1001913A3 (nl) * 1988-05-03 1990-04-10 Picanol Nv Inrichting voor het afvoeren van het weefsel bij weefmachines.
KR950004158B1 (ko) * 1990-12-26 1995-04-27 제일모직 주식회사 직기에 사용되는 개선된 패브릭 스탠드
DE59810158D1 (de) * 1998-02-19 2003-12-18 Sultex Ag Rueti Warenabzugsvorrichtung für eine Webmaschine und Webmaschine mit einer Warenabzugsvorrichtung
CN102704183B (zh) * 2011-03-26 2015-11-25 卡尔迈尔纺织机械制造有限公司 从纺织机尤其经编机中引出面状的纺织的织物幅面的装置
FR3048435B1 (fr) * 2016-03-02 2018-04-06 Safran Aircraft Engines Installation et procede pour la fabrication d'une texture fibreuse en forme de bande presentant en section transversale un profil evolutif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE405991B (sv) * 1973-05-22 1979-01-15 Jurgens Maschbau Gmbh & Co Tygavdragsanordning for vevmaskiner
CH603860A5 (cs) * 1976-09-21 1978-08-31 Saurer Ag Adolph
CH615644A5 (cs) * 1978-01-19 1980-02-15 Sulzer Ag
IT1210942B (it) * 1982-10-01 1989-09-29 Omv Off Mecc Vilminore Sistema per ottenere una pressione reciproca differenziata nel contatto fra due cilindri, in particolare fra il cilindro tirapezza e la barra pressapezza di un telaio di tessitura.
US4643232A (en) * 1985-12-13 1987-02-17 Wagner Theodor E Harness frame for a weaving loom

Also Published As

Publication number Publication date
DE3664648D1 (en) 1989-08-31
CS888586A2 (en) 1989-06-13
US4722369A (en) 1988-02-02
SU1524813A3 (ru) 1989-11-23
JPS62141156A (ja) 1987-06-24
BR8605979A (pt) 1987-09-15
EP0224850A1 (de) 1987-06-10

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