EP2047018B1 - Fournisseur de fil avec tambour fournisseur de fil amovible - Google Patents

Fournisseur de fil avec tambour fournisseur de fil amovible Download PDF

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Publication number
EP2047018B1
EP2047018B1 EP06776549A EP06776549A EP2047018B1 EP 2047018 B1 EP2047018 B1 EP 2047018B1 EP 06776549 A EP06776549 A EP 06776549A EP 06776549 A EP06776549 A EP 06776549A EP 2047018 B1 EP2047018 B1 EP 2047018B1
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EP
European Patent Office
Prior art keywords
thread delivery
shaft
delivery device
fastening element
thread
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.)
Active
Application number
EP06776549A
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German (de)
English (en)
Other versions
EP2047018A1 (fr
Inventor
Richard Kaufmann
Michael Mixner
Markus Hermann
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.)
Memminger IRO GmbH
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Memminger IRO GmbH
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Publication date
Application filed by Memminger IRO GmbH filed Critical Memminger IRO GmbH
Publication of EP2047018A1 publication Critical patent/EP2047018A1/fr
Application granted granted Critical
Publication of EP2047018B1 publication Critical patent/EP2047018B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the invention relates to a yarn feeding device, in particular a positive feed.
  • Yarn feeding devices are basically known devices that are used in large numbers on textile machines, for example on circular knitting machines. They serve to control the individual knitting points supplied thread.
  • the EP 0 333 482 A1 a yarn feeding device with a carrier which is adapted for attachment to a textile machine. He points to a corresponding mouth with a clamping screw.
  • a shaft is rotatably mounted in a vertical orientation. This shaft has several pulleys over which it is driven.
  • the shaft carries a yarn feed wheel, which is wrapped by the thread at least once, which is thereby promoted upon rotation of the yarn feed wheel.
  • the yarn feed wheel is attached to the lower end of the shaft by means of a washer and a nut which is screwed onto a threaded stub provided on the shaft. A change of Fadenarrirads is not provided.
  • the shaft in place of the threaded bore on an axially from the lower front end projecting threaded stub on which a machine screw sits, which holds the thread storage drum.
  • An inventive yarn feeding device is provided with a carrier, which is adapted for attachment to a textile machine, with a rotatably mounted shaft which is provided at one end with a thread, with a drive means for rotationally driving the shaft with a yarn feed wheel, which has an opening for centered receiving the end of the shaft is provided, and with a fastening element which has a matching to the thread of the shaft thread and is screwed to this.
  • the shaft is rotatably mounted on the carrier and removably mounted the yarn feed wheel.
  • the fastener is used to attach the yarn feed wheel to the shaft, wherein the fastener has a handle that allows a tool-free tightening and loosening of the fastener.
  • the yarn feeding device according to the invention thus has a yarn feed wheel, which by means of a manually operated
  • the manually operable fastener is a screw or nut that engages an internal or external thread of the shaft. It is provided with a handle which facilitates tool-less operation, i. a tool-free tightening and loosening of the fastening screw or nut allowed. This regardless of the possibility to rotate the drive shaft of the yarn feed wheel both clockwise and counterclockwise.
  • the fastener is used for frictionally coupling the Fadenunterrads with the shaft.
  • a positive connection between the shaft and the yarn feed wheel is preferably not provided. This facilitates the attachment of the Fadenarrirads to the shaft, because there are no special rotational positions must be set to connect shaft and Fadenunterrad together. If so desired, however, an additional form-fit can be provided to ensure a rotationally fixed coupling between the shaft and yarn feed even when not quite tightened mounting screw or nut.
  • the provided on the fastening screw or nut handle can be, for example, a molded plastic part.
  • this is relatively flat, so that it does not or only slightly beyond the lower edge of the yarn feed wheel.
  • the fastening element is provided in addition to the handle with a coupling for connecting a tool.
  • This coupling may for example be an opening with hexagonal cross-section, a screwdriver slot or a screwdriver cross slot or the like.
  • This tool attachment opening can be used as an assembly aid in serial industrial production or even if the fastening screw or nut is so tight that it can not be loosened by hand.
  • the yarn feed wheel is provided at its serving for receiving the shaft opening with an edge or collar, which rests flat against the shaft and thereby serves for the correct radial alignment of the yarn feed wheel.
  • a certain game is present and tolerable. It enables the easy insertion and removal of the yarn feed wheel.
  • To eliminate any wobble, however, serves an interrupted or contiguous trained annular surface on which the yarn feeding wheel finds its axial abutment.
  • the fastening screw or nut biases the yarn feed wheel against this annular surface. This will cause positioning errors in Result of manufacturing tolerances on the collar of the opening of the yarn feed wheel and assembly tolerances and errors eliminated. It is ensured that the yarn feed wheel runs without tumbling even after many changes and despite certain production tolerances.
  • the yarn feed wheel can be formed as a sheet metal bent part.
  • the fastening element is designed as a fastening screw.
  • the fastening screw is preferably provided on its front side with a ring cutting edge.
  • the annular cutting edge makes it possible to penetrate paint layers present on the machine ring and thus establishes electrical contact between the holder and the machine ring.
  • it centered ring cutter the mounting screw where she worked less deep into the machine ring as an alternative possible tip.
  • FIG. 1 illustrates a yarn feeding device 1, which serves to supply a textile machine with thread.
  • the textile machine is, for example, a circular knitting machine, then this is provided with a holder, a so-called machine ring 2, on which many such yarn feeding devices 1 sit and in each case supply thread to the knitting points.
  • the delivery is positive, ie essentially slip-free. This means that the individual knitting points are supplied with defined amounts of thread.
  • the fastening device 4 is formed for example by a mouth-like recess in the carrier 3, which is associated with a fastening screw 5.
  • a handle 6 This can be formed for example by a molded plastic part.
  • the yarn feeding device 1 has a shaft 7 rotatably mounted on the carrier 3, which carries at its upper end above the carrier 3 at least one pulley 8, which serves for the rotational driving of the shaft 7.
  • a plurality of such pulleys 8 may be provided, each of which may engage different belts.
  • the shaft 7 is connected to a yarn feed wheel 9, which serves to convey the yarn 10.
  • This passes through a plurality of eyelets 11, 12, 13 and a thread brake 14, which is arranged with respect to the direction of the thread 10 before the yarn feed wheel 9 and formed, for example, by magnetic force adhering rings is.
  • the yarn feed wheel 9 is preferably a bent sheet metal part or deep drawn part. It shows how FIG. 2 shows, a lower end wall 15, over which an edge 16 protrudes downward. "Downwards" means in the direction of the shaft 7, extending beyond the free end. But it is also possible to use yarn feed wheels, which are designed as a rod cage. These can be rigid. Alternatively, it can be provided with an active thread feed, as in the DE 31 05 990 A1 is described.
  • the yarn feed wheel is then formed by two nested pin drums whose axes of rotation are set at an angle to each other by a few degrees. One pin drum is attached to the shaft, while the other pin drum is mounted on the carrier 3 via an angularly positioned ball bearing. Due to the relative movement between the two synchronously rotating pin drums, the feed of a thread winding is effected, which wraps around the pin drums.
  • the yarn feed wheel 9 may alternatively be formed as a rod cage or otherwise.
  • a fastener 18 for fastening the yarn feed wheel 9 on the shaft 7 is a fastener 18, for example in the form of a provided with a handle 19 screw 20, as they are made FIG. 3 evident.
  • the screw 20 is screwed in this embodiment in a coaxial in the shaft 7 threaded bore 21 having an internal thread 22.
  • the screw 20 is with a corresponding external thread 23 provided that fits the internal thread 22.
  • the internal thread 22 is preferably set back against the end face of the shaft 7, so that the external thread 23 and the internal thread 22 engage only a few (for example less than 10, preferably less than 5) revolutions. This allows the yarn feed wheel with a few simple steps to solve and fasten. In addition, the then relatively short internal thread 22 can be made easier.
  • the screw 20 is molded on its head 24 with a plastic body 25 which forms the handle 19.
  • the handle is square, for example, in plan view, wherein grip recesses 26, 27 are formed at its edges. These are so flat that at any point parallel to the radial direction R standing surfaces are formed.
  • the head 24 is also provided with a lug opening 28 for non-rotatably attaching a tool, such as a hexagon socket, to the screw 20.
  • a tool such as a hexagon socket
  • an annular cutting edge 28 is formed on the end face of the threaded shaft of the screw 20, which is oriented concentrically to the longitudinal center axis of the screw 20.
  • the shaft 7 is cylindrical on its outer periphery, in particular in the lower end region.
  • a sleeve 29 which forms an abutment for the end wall 15 of the yarn feed wheel 9.
  • the sleeve 29 is axially immovably connected to the shaft 7. It has on its front side a flat annular plane surface 30, which serves for the wobble-free orientation of the yarn feed wheel 9.
  • the sleeve 29 defines with the outer surface of the shaft 7 an annular space 31 which serves to receive a formed on the end wall 19 pipe flange 32 of the yarn feed wheel 9.
  • the pipe flange defines an approximately cylindrical opening whose axial length is greater than the thickness of the existing sheet metal end wall 15. In the radial direction of the pipe flange 32 has little play on the shaft 7, which is in the range of hundredths or tenths of a millimeter.
  • a washer 33 is provided between the screw 20 and the end wall 15. The end wall is clamped between the washer 33 and the plane surface 30.
  • timing belt rotates the pulley 8 and with this the yarn feed wheel 10 right or left.
  • the thread spool 9 looping around the thread is thereby fed to the knitting machine or other textile machine.
  • the handle 19 is largely covered by the edge 16. The handle generates only a small air movement and does not act as a fan blade. Thus, flow deposits are minimized.
  • the fastener 18 is released without the aid of a tool by the pulley 8 or the yarn feed wheel 18 is held and rotated with the other hand, the handle 19. If the screw is screwed out of the threaded hole 21, the Fadenunterrad can be changed and the Tighten screw 20 again. In this case, the pipe flange 32 of the other yarn feed wheel is again introduced into the annular space 31 and the screw 20 tightened. It presses on the washer 33, the wall 15 to the flat surface 30 and thereby aligns the yarn feed wheel 9 free of tumble.
  • the screw 20 can be exchangeable with the fastening screw 5 match. This signals to the operator, even if he does not know the yarn feeding device, that the fastening element 18 is a manually releasable element.
  • the two fastening screws 5, 20 can be replaced with each other.
  • the functionless blade 28 gains its function. If the screw 20 is used as a fastening screw 5, it secures the yarn feeding device 1 thanks to the action of the cutting edge 28 on the machine ring 2 long-term secure.
  • an electrical connection between the machine ring 2 and the carrier 3 is produced. Length and thread of the screw 20 are at least in an advantageous embodiment dimensioned so that the screw 20 can serve as a fastening screw 5.
  • FIG. 5 A modified embodiment is illustrated in FIG. 5.
  • the previous reference symbols and descriptions apply correspondingly.
  • the shaft 7 is provided with a projection 34 which carries external thread 35.
  • a nut 36 which is encapsulated by the plastic body 25 occurs.
  • the plastic body 25 and the fastener ie here the mother 36. The possibility to use a tool was omitted here.
  • the nut 36 is held positively in the plastic body 25.
  • the positive connection can be supported by a frictional connection, so that the plastic body 25 can be pulled off the nut 36.
  • a tool can be attached to the nut 36.
  • the nut 36 may be a hex nut.
  • the frictional engagement between the nut 36 and the plastic body 25 is preferably so strong that the plastic body 25 from the nut 36 can not fall unintentionally.
  • the frictional engagement can be supported by a latching connection.
  • An inventive yarn feeding device has a rotatably mounted shaft with a Fadenunterrad which is removably mounted.
  • a Fadenunterrad which is removably mounted.
  • the Fadenarrirads serves a fastener in the form of a nut or a screw, which are each provided with a handle.
  • the yarn feed wheel can be replaced by hand without the aid of tools.
  • the approach of a tool is possible.
  • Radial alignment and axial alignment and tumble-free axial alignment are provided by different functional surfaces, namely the flat surface 30 and cylindrical outer peripheral surface of the shaft 7.

Abstract

L'invention concerne un fournisseur de fil qui présente un arbre monté rotatif avec une roue de fourniture de fil qui est montée de manière amovible. Pour la fixation de la roue de fourniture de fil, on utilise un élément de fixation en forme d'écrou ou de vis, qui est muni dans chaque cas d'une manette de préhension. De ce fait, la roue de fourniture de fil peut être remplacée à la main sans utiliser d'outil. Avantageusement, en variante ou en plus, on peut utiliser un outil. Pour l'ajustement sans nutation de la roue de fourniture de fil, on utilise de préférence une surface d'appui d'une butée tournée dans la direction axiale. L'orientation radiale et l'orientation axiale ainsi que l'orientation axiale sans nutation sont réalisées par différentes surfaces fonctionnelles, à savoir la surface du plan (30) et la surface périphérique extérieure cylindrique de l'arbre (7).

Claims (17)

  1. Fournisseur de fil (1)
    avec un support (3) qui est conçu pour être fixé sur une machine textile,
    avec un arbre (7) logé de manière rotative qui est pourvu d'un filetage (22) à une extrémité,
    avec un dispositif d'entraînement (8) pour l'entraînement rotatif de l'arbre (7),
    avec une roue de fourniture de fil (9) qui est pourvue d'une ouverture pour la réception centrée de l'extrémité de l'arbre (7), et
    avec un élément de fixation (18, 20) qui présente un filetage (23) adapté au filetage (22) de l'arbre (7) et est vissé avec celui-ci,
    caractérisé en ce que
    l'arbre (7) est logé de manière rotative sur le support (3), la roue de fourniture de fil (9) est montée de manière amovible et l'élément de fixation (18, 20) sert à fixer la roue de fourniture de fil (9) sur l'arbre (7),
    dans lequel l'élément de fixation (18, 20):
    présente une poignée (19) permettant un serrage et desserrage sans outil de l'élément de fixation (18, 20).
  2. Fournisseur de fil selon la revendication 1, caractérisé en ce que le dispositif d'entraînement (8) est conçu pour la rotation à droite et la rotation à gauche de l'arbre (7).
  3. Fournisseur de fil selon la revendication 1, caractérisé en ce que le dispositif d'entraînement (8) est formé par au moins une poulie à courroie (8) reliée ou pouvant être reliée de manière solidaire en rotation à l'arbre (7).
  4. Fournisseur de fil selon la revendication 1, caractérisé en ce qu'un contre-appui (29) est prévu sur l'arbre (7) pour l'appui axial de la roue de fourniture de fil (9).
  5. Fournisseur de fil selon la revendication 4, caractérisé en ce que le contre-appui (29) présente une surface d'appui (30) annulaire dirigée dans le sens axial.
  6. Fournisseur de fil selon la revendication 1, caractérisé en ce qu'au moins la section médiane, comportant l'ouverture, de la roue de fourniture de fil (9) est réalisée à partir d'une tôle.
  7. Fournisseur de fil selon la revendication 6, caractérisé en ce que l'ouverture présente un bord (32), qui définit un passage cylindrique, dont la longueur axiale est supérieure à l'épaisseur de la tôle qui compose la section.
  8. Fournisseur de fil selon les revendications 4 et 7, caractérisé en ce qu'un espace annulaire (31) est prévu entre le contre-appui (29) et l'arbre (7) pour la réception du bord.
  9. Fournisseur de fil selon la revendication 1, caractérisé en ce que le bord (32) s'appuie avec peu de jeu avec sa paroi intérieure cylindrique contre le côté extérieur de l'arbre (7).
  10. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de fixation (18, 20) est un écrou (36).
  11. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de fixation (18, 20) est une vis (20).
  12. Fournisseur de fil selon la revendication 1, caractérisé en ce que l'élément de fixation (18, 20) présente un élément d'accouplement (28) pour un outil.
  13. Fournisseur de fil selon la revendication 12, caractérisé en ce que l'élément d'accouplement (28) est une ouverture hexagonale pour la réception d'une clé six pans.
  14. Fournisseur de fil selon la revendication 1, caractérisé en ce que la poignée est formée par une pièce en plastique (25) appliquée par injection sur l'élément de fixation (18, 20).
  15. Fournisseur de fil selon la revendication 1, caractérisé en ce que la poignée (19) se situe dans un espace délimité par le bord inférieur de la roue de fourniture de fil (9).
  16. Fournisseur de fil selon la revendication 11, caractérisé en ce que élément de fixation (18, 20) présente au niveau de son front un tranchant annulaire (28).
  17. Fournisseur de fil selon la revendication 16, caractérisé en ce que l'élément de fixation (20) coïncide de manière échangeable avec un autre élément de fixation (5), qui sert à fixer le support (3) sur la machine textile.
EP06776549A 2006-08-02 2006-08-02 Fournisseur de fil avec tambour fournisseur de fil amovible Active EP2047018B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/007634 WO2008014805A1 (fr) 2006-08-02 2006-08-02 Fournisseur de fil avec tambour fournisseur de fil amovible

Publications (2)

Publication Number Publication Date
EP2047018A1 EP2047018A1 (fr) 2009-04-15
EP2047018B1 true EP2047018B1 (fr) 2011-12-21

Family

ID=37616883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776549A Active EP2047018B1 (fr) 2006-08-02 2006-08-02 Fournisseur de fil avec tambour fournisseur de fil amovible

Country Status (4)

Country Link
EP (1) EP2047018B1 (fr)
CN (1) CN101501260B (fr)
TW (1) TWI348507B (fr)
WO (1) WO2008014805A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115631A1 (de) * 2018-06-28 2020-01-02 Memminger-Iro Gmbh Fadenliefergerät und System mit einem Fadenliefergerät

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2553935A1 (de) * 1975-12-01 1977-06-08 Iro Ab Fadenspeicher- und -liefervorrichtung
FR2649455A1 (fr) * 1989-07-10 1991-01-11 Jouve Daniel Ecrou rapide
HUT70006A (en) * 1990-09-12 1995-09-28 Matthews Fastener particularly for grinding wheel
DE4300465A1 (de) * 1993-01-11 1994-07-14 Nass Magnet Gmbh Befestigungssystem
US5947671A (en) * 1998-01-30 1999-09-07 Power Tool Holders Incorporated Hand actuable clamping device with circumferentially extending tightening members
DE19840727A1 (de) * 1998-09-07 2000-05-25 Memminger Iro Gmbh Fadenliefergerät für Textilmaschinen
DE19932481A1 (de) * 1999-07-12 2001-01-18 Memminger Iro Gmbh Fadenliefergerät für Textilmaschinen
NZ533551A (en) * 2004-06-15 2008-05-30 Mulford Plastics Nz Ltd A knob or key having curved surfaces arranged to assist with tightening or releasing

Also Published As

Publication number Publication date
EP2047018A1 (fr) 2009-04-15
WO2008014805A1 (fr) 2008-02-07
TW200809027A (en) 2008-02-16
CN101501260B (zh) 2012-03-21
CN101501260A (zh) 2009-08-05
TWI348507B (en) 2011-09-11

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