EP0409743B1 - Fadenspanneinrichtung für Textilmaschinen - Google Patents

Fadenspanneinrichtung für Textilmaschinen Download PDF

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Publication number
EP0409743B1
EP0409743B1 EP90420300A EP90420300A EP0409743B1 EP 0409743 B1 EP0409743 B1 EP 0409743B1 EP 90420300 A EP90420300 A EP 90420300A EP 90420300 A EP90420300 A EP 90420300A EP 0409743 B1 EP0409743 B1 EP 0409743B1
Authority
EP
European Patent Office
Prior art keywords
rollers
roller
yarn
housing
tension device
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
EP90420300A
Other languages
English (en)
French (fr)
Other versions
EP0409743A1 (de
Inventor
Carlos Matas Gabalda
Bernard Puaux
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.)
ICBT Lyon SA
Original Assignee
ICBT Lyon SA
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 ICBT Lyon SA filed Critical ICBT Lyon SA
Publication of EP0409743A1 publication Critical patent/EP0409743A1/de
Application granted granted Critical
Publication of EP0409743B1 publication Critical patent/EP0409743B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/16—Braked elements rotated by material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a new type of thread tensioner usable on any type of textile material, and more particularly on machines making it possible to twist and / or twist threads of any kind.
  • drum braked by magnetic brake implies having a "drum” of relatively large diameter (of the order of 80 to 100 mm) if one wants to obtain a good surface. wire adhesion. Furthermore, during start-up, it has the disadvantage of causing voltage surges. Finally and above all, these solutions require pre-braking in the absence of which there can be no adhesion of the wire to the pulley.
  • the braking means of the rollers are generally incorporated therein and they do not make it possible to adjust the tension during operation.
  • the braking means are designed so as to allow adjustment during operation.
  • the tensioning device is of the type comprising rollers mounted free in rotation on a support unit, at least one of these rollers being subjected to the action of a braking system with adjustable permanent magnet and the wire during its movement coming to tie around the periphery of said rollers, the displacement of the wire upstream and downstream of the tensioner assembly being produced in a common direction known as the "running axis", said rollers being three in number and being mounted on the support box so that two of these rollers are called “rollers” input “are arranged at the level of the wire introduction zone, on either side of the travel axis, at least one of these input rollers comprising said braking system with adjustable permanent magnet and their mounting being carried out in such a way that they are kept in tangential contact with each other, characterized in that the third roller known as the "output roller” is in turn positioned downstream of the input rollers mentioned above if we follow the path of the wire, its surface tangent to the axis of travel.
  • the input rollers are preferably rubberized rollers, the output roller having, for its part, a hard surface (for example metallic) to resist friction due to torsion.
  • the device according to the invention is preferably associated, at the level of the wire entry zone, with a pretensioning device which is also the subject of the present invention and which makes it possible to absorb the reels and prevents them from being passed on downstream.
  • the three rollers are maintained in mutual contact, the second and third rollers being mounted on the housing by means of a lever (or the like) subjected to the action of a return means ( spring..).
  • the second roller being, as before, mounted on the housing by means of an articulated arm subjected to the action of a return spring and the third roller being, in turn, mounted along a fixed axis on the housing.
  • the first and third rollers are mounted free in rotation about a fixed axis, the second roller being, for its part, kept under pressure against the two aforementioned rollers by magnetism using a magnet (or any other equivalent system), the second roller can be either completely free and detached from the support box, or mounted on this box by any guide system leaving it free to make its contact with the other two rollers.
  • the tensioning device consists of a plurality of rollers which are mounted free in rotation on a support housing designated by the general reference (1), itself fixed on the frame (2) of the machine.
  • the wire (3) which is intended to be twisted comes from a power source (not shown) and penetrates inside the support box (1) through a guide eyelet (4) then comes to tie up around the rollers and exits at (25) to be brought to the winding system not shown.
  • the scrolling of the thread upstream and downstream of the tensioning device is carried out along a designated axis XX, in the following description by the expression "scrolling axis".
  • rollers there are three rollers respectively (5.6 and 7). Each roller is mounted in a known manner on the support box (1) so that during the passage of the wire, the latter drives them in rotation. Braking means are associated with at least one of these rollers, in the present case with the roller (5), an embodiment allowing adjustment in operation and which is also part of the invention, being preferably associated with the first roller (5).
  • the structure of such a braking element will be seen in more detail in the following description.
  • the three rollers are in mutual contact, the second roller (6) and the third roller (7) being mounted on pivoting arms (8,9), subjected to the action return springs (10,11) simply shown in Figure 1.
  • the two rollers (5,6) are coated with a layer of rubber while the roller (7) has a hard surface and is preferably made of metal.
  • the roller (7) acts as a torsion ascent blocker and, moreover, as it is kept in contact with the second roller (6), it ensures the holding the wire (3) even when stopped.
  • the third roller (7) is not kept in contact with the roller (6), but is mounted to rotate freely on a fixed axis.
  • This embodiment simplifies the design of the tensioner, but on the other hand, the wire is not not perfectly maintained at a standstill as in the preferred embodiment.
  • the third roller (7) is mounted to rotate freely on a fixed axis, but is also in contact with the second roller (6); the wire is therefore perfectly kept stationary.
  • the second roller (6) as in the preferred embodiment illustrated in Figure 1, is in contact with the inlet roller (5) and the third outlet roller (7).
  • This second roller 6) is kept under pressure against the other two by magnetism, using a magnet (26), or by any other system making it possible to ensure its contact with the other two rollers.
  • the second roller (6) can be entirely free and disconnected from the support box (1) or from any other part relating thereto; it can also be secured to the support block (1) by any guide system giving it complete freedom to make contact with the rollers (5) and (7).
  • Such an embodiment simplifies the design of the tensioning device.
  • FIG. 3 and 4 are sections along the axes AA and BB of Figure 1 showing in more detail the structure of the rollers (5,6,7) that comprises the wire tensioner according to the invention. It should be noted that in the variant illustrated in FIG. 5, the only difference lies in the fact that the third roller (7) is not kept in contact with the roller (6).
  • each roller is mounted on the support box (1) by means of bearings carried by support pins (5a, 6a, 7a).
  • the input roller (5) is, as shown in Figure 3, associated with a braking device designated by the general reference (F) which can be adjusted in operation.
  • This braking device is of the permanent magnet hysteresis type. Any other equivalent device could of course be used.
  • this braking device (F) is mounted on the other side of the housing (1) relative to the roller (5). It essentially consists of a fixed body (12) in the form of a cage centered on the axis (5a) of the roller (5), a bearing being interposed between this body (12) and the axis (5a).
  • a disc (13) comprising a hysteresis washer (14) is fixed by means of a screw (15) on the end of the axis (5a). Opposite this disc, is disposed a set of magnets (16) mounted on a ring (17), a ring which can be moved inside the fixed body (12) so as to modify the air gap between the magnets ( 16) and the hysteresis washer (14).
  • a single braking device associated with the first roller (5) is sufficient, it can also be envisaged to associate with the second roller (6) or even also with the third roller (7), a braking element additional not adjustable in operation.
  • the device according to the invention is preferably associated with an assembly making it possible to eliminate the voltage surges which occur upstream of the inlet eyelet (4).
  • a compensator assembly essentially consists of two additional eyelets (20,21) arranged at the entry of the tensioner along the axis of travel XX.
  • One of the eyelets (21) is mounted on a pivoting arm (see Figure 2) while the second is fixedly mounted on the base of the housing (1).
  • Two magnets respectively (23,24) are mounted one on the base of the housing (1) (magnet (23)), the other (24) on the pivoting arm (22). These two magnets are arranged so their faces of the same polarity are facing each other. In this way, the arm (22) tends to be pushed back as illustrated in FIG. 2 in dashed lines and, when the wire (3) passes, a tie is thus formed upstream of the entry eyelet (4). variable to eliminate voltage surges.
  • Such a tensioning device of simple and particularly effective design makes it possible to ensure a regular and constant tension in the thread, without variation during operation.
  • the braking system accessible from the outside that includes one of the rollers, it is possible to make adjustments during operation.
  • Such a device can be used on any type of textile material.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
  • Knitting Machines (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (8)

1. Fadenspanneinrichtung mit an einem Trägergehäuse (1) frei drehbar angebrachten Rollen (5,6,7) wobei zumindest eine der Rollen der Wirkung eines regelbaren Permanentmagnetbremssystems (12-17) ausgesetzt ist, und wobei der Faden (3) bei seinem Lauf um die Umfangsseiten der Rollen drehgespannt wird, wobei der Lauf des Fadens vor und nach der Fadenspanneinrichtung in einer gleichen Richtung, die "Fadenlaufachse" (XX) genannt wird, erfolgt, wobei drei Rollen vorgesehen sind, die derart am Trägergehäuse angebracht sind, daß zwei dieser Rollen, die "Einlaufrollen" (5,6) genannt werden, auf Höhe des Einlaufsbereiches des Fadens beidseits der Fadenlaufachse (XX) angeordnet sind, wobei zumindest eine dieser Einlaufrollen (5,6) das regelbare Permanentmagnetbremssystem (12-17) aufweist, und wobei deren Anordnung derart ist, daß sie (5,6) in tangentialer Berührung untereinander gehalten sind, dadurch gekennzeichnet, daß die dritte Rolle (7), die "Auslaufrolle" genannt wird, in Fadenlaufrichtung gesehen, nach den vorgenannten Einlaufrollen (5,6) angeordnet ist, wobei deren Umfangsfläche tangential zur Fadenlaufachse (XX) verläuft.
2. Fadenspanneinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einlaufrollen (5,6) kautschukbezogene Rollen sind, wobei die Auslaufrolle (7) eine harte Oberfläche aufweist, um Torsionsreibungen widerstehen zu können.
3. Fadenspanneinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß diese im Einlaufbereich des Fadens mit einer Vorspannvorrichtung (20,21) in Verbindung steht, die Abspulrucke absorbiert und verhindert, daß diese sich nachlaufseitig auswirken.
4. Fadenspanneinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die drei Rollen (5,6,7) in gegenseitigem Kontakt gehalten sind, wobei die zweite (6) und die dritte Rolle (7) jeweils mittels eines Hebels (8,9) am Gehäuse angebracht sind, die der Wirkung von Rückstellmitteln (10,11) unterworfen sind.
5. Fadenspanneinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die beiden Einlaufrollen (5,6) in gegenseitigem Kontakt gehalten sind, wobei die zweite Rolle (6) über einen verschwenkbaren Arm am Gehäuse angebracht ist, der der Wirkung einer Rückstellfeder ausgesetzt ist, und daß die dritte Rolle (7) an einer ortsfest am Gehäuse angeordneten Achse angebracht ist.
6. Fadenspanneinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die drei Rollen (5,6,7) in gegenseitigem Kontakt gehalten sind, wobei die zweite und die dritte Rolle frei drehbar um jeweils eine feste Achse angebracht sind, wobei die zweite Rolle gegen die beiden zuvor erwähnten Rollen durch Magnetismus mittels eines Magneten unter Druck gehalten wird, wobei die zweite Rolle entweder völlig frei und getrennt vom Trägergehäuse oder durch ein solches Führungssystem am Gehäuse angebracht ist, das dieser jegliche Freiheit läßt, um deren Kontakt mit den beiden anderen Rollen zu bewerkstelligen.
7. Fadenspanneinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Bremsmittel der Einlaufrolle (5) zugehörig sind und durch einen festen Korpus (12) in Form eines zentriert auf der Achse (5a) der Rolle (5) aufgebrachten Käfigs ausgebildet sind, wobei zwischen den Korpus (12) und die Achse (5a) ein Wälzlager zwischengelegt ist, wobei eine Scheibe (13), die eine Hysteresescheibe (14) trägt, mittels einer Schraube (15) am äußeren Ende der Achse (5a) fest angebracht ist, und wobei gegenüberliegend zur Hysteresescheibe (14) ein Satz an Magneten (16) auf einem Stellring (17) angebracht ist, der im inneren des festen Korpus (12) verschiebbar ist, um den Luftspalt zwischen den Magneten (16) und der Hysteresescheibe (14) verändern zu können.
8. Fadenspanneinrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß die auf Höhe des Einzugsbereichs des Fadens angeordnete Vorspannvorrichtung aus zwei zusätzlichen Litzenaugen (20,21) gebildet ist, die am Einlauf der Fadenspanneinrichtung längs der Fadenlaufachse (XX) angeordnet sind, wobei eines der Litzenaugen (21) auf einem schwenkbaren Arm (22) angeordnet ist, wohingehend das zweite (20) fest an der Basis des Gehäuses (1) angebracht ist, wobei zwei Magnete (23,24) derart angebracht sind, daß sich einer (23) an der Basis des Gehäuses (1) befindet, wohingegen der andere (21) am schwenkbaren Arm (22) vorgesehen ist, wobei sich deren Seiten gleicher Polarität gegenüberstehen.
EP90420300A 1989-07-18 1990-06-26 Fadenspanneinrichtung für Textilmaschinen Expired - Lifetime EP0409743B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909917 1989-07-18
FR8909917A FR2649965B1 (fr) 1989-07-18 1989-07-18 Dispositif tendeur de fil pour machines textiles

Publications (2)

Publication Number Publication Date
EP0409743A1 EP0409743A1 (de) 1991-01-23
EP0409743B1 true EP0409743B1 (de) 1992-05-13

Family

ID=9384061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420300A Expired - Lifetime EP0409743B1 (de) 1989-07-18 1990-06-26 Fadenspanneinrichtung für Textilmaschinen

Country Status (6)

Country Link
US (1) US5060885A (de)
EP (1) EP0409743B1 (de)
JP (1) JP2723346B2 (de)
DE (1) DE69000101D1 (de)
ES (1) ES2031725T3 (de)
FR (1) FR2649965B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673956B1 (fr) * 1991-03-14 1993-05-28 Ic Bt Lyon Machine de cablage de fils comportant un ensemble regulateur de tension et de longueur perfectionne.
DE4324412C2 (de) * 1993-07-21 1998-03-19 Mayer Textilmaschf Vorrichtung zur Einstellung der Fadenspannung
CN102094271B (zh) * 2011-03-24 2012-07-11 张朝山 多极磁性阻尼张力控制器
EP3741476B1 (de) * 2019-05-20 2022-12-28 Schleuniger AG Richtvorrichtung zum begradigen einer leitung, verfahren zum bremsen von zumindest einer drehbaren rolle in einer richtvorrichtung, kabelverarbeitungsmaschine mit einer richtvorrichtung sowie upgrade-kit für eine kabelverarbeitungsmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362920A (en) * 1943-01-08 1944-11-14 Harry W Moore Unreeling device
US2667313A (en) * 1948-07-30 1954-01-26 Deering Milliken Res Trust Tension device
US2978203A (en) * 1958-09-25 1961-04-04 American Thread Co Tension roller device
NL113497C (de) * 1959-05-12
US3026063A (en) * 1959-05-25 1962-03-20 American Enka Corp Tensioning device
FR2145056A5 (en) * 1971-07-07 1973-02-16 Inst Textile De France Yarn tensioning device - including yarn tensioning roller connected to generator rotor
JPS4881647A (de) * 1972-01-12 1973-11-01
FR2295900A1 (fr) * 1974-12-24 1976-07-23 Hacoba Textilmaschinen Dispositif de freinage de fil
DE3002981A1 (de) * 1980-01-29 1981-07-30 Erich 7993 Kressbronn Brosa Fadenbremse
FR2531051A1 (fr) * 1982-07-29 1984-02-03 Asa Sa Dispositif tendeur de fils et materiel textile equipe d'un tel dispositif
DE3624370A1 (de) * 1985-07-20 1987-01-29 Erich Brosa Magnetfadenbremse
US4848078A (en) * 1988-07-05 1989-07-18 White Frances H Flyer for textile apparatus

Also Published As

Publication number Publication date
FR2649965B1 (fr) 1991-09-27
JP2723346B2 (ja) 1998-03-09
FR2649965A1 (fr) 1991-01-25
EP0409743A1 (de) 1991-01-23
JPH0351265A (ja) 1991-03-05
ES2031725T3 (es) 1992-12-16
US5060885A (en) 1991-10-29
DE69000101D1 (de) 1992-06-17

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