EP0292377B1 - Device for eliminating free fibres carried by the yarn balloon during unwinding of a bobbin - Google Patents

Device for eliminating free fibres carried by the yarn balloon during unwinding of a bobbin Download PDF

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Publication number
EP0292377B1
EP0292377B1 EP19880401191 EP88401191A EP0292377B1 EP 0292377 B1 EP0292377 B1 EP 0292377B1 EP 19880401191 EP19880401191 EP 19880401191 EP 88401191 A EP88401191 A EP 88401191A EP 0292377 B1 EP0292377 B1 EP 0292377B1
Authority
EP
European Patent Office
Prior art keywords
spindle
ring
axis
yarn
bobbin
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
EP19880401191
Other languages
German (de)
French (fr)
Other versions
EP0292377A1 (en
Inventor
Henri Genevray
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.)
N Schlumberger SAS
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N Schlumberger SAS
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Filing date
Publication date
Application filed by N Schlumberger SAS filed Critical N Schlumberger SAS
Publication of EP0292377A1 publication Critical patent/EP0292377A1/en
Application granted granted Critical
Publication of EP0292377B1 publication Critical patent/EP0292377B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/42—Guards or protectors for yarns or threads, e.g. separator plates, anti-ballooning devices
    • D01H1/425—Anti-ballooning rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/22—Guides for filamentary materials; Supports therefor adapted to prevent excessive ballooning of 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 device for removing the free fibers carried by the reel unwinding ball. It applies in particular, but not exclusively, to such a device used for wrapped spinning, in which a thread axially passes through a hollow rotating spindle which carries a spool of wrapping thread, the latter also being driven in the hollow spindle ( see DE-A-2425901).
  • the object of the invention is to remedy these drawbacks by providing a simple and reliable device which makes it possible to effectively remove the free fibers.
  • the device according to the invention is characterized in that it comprises a fixed closed ring which surrounds the spool at its unwinding end and which has a general plane inclined at an acute angle to the axis of rotation of the spindle.
  • the tilt angle is between 5 ° and 80 °, and is preferably around 30 °.
  • the ring can be circular, with its center located on the axis of the spindle, so that in axial projection it gives an ellipse.
  • the ring is itself elliptical, the ellipse being arranged so that its axial projection is a circle whose center is also located on the axis of the spindle.
  • the ring In the axial direction, the ring can extend, for example, over the first third of the coil, its upper part being situated substantially at the level of the entry of the wire into the hollow spindle.
  • a wrapping installation which comprises, in known manner, input stretching rollers 1 for feeding wire 2 to be wrapped, a hollow rotating spindle 3, a fixed support 4 for the spindle 3, means 5 carried by the spindle 3 to support a coaxial coil 6 of a wrapping wire 7, and delivery rollers 8, at the outlet of the spindle 3, for extracting and delivering the wrapped thread 9.
  • a fixed closed ring 10 which surrounds the spool 6 at a distance, at the unwinding end thereof, and which has a general plane inclined at an acute angle ⁇ relative to the spindle axis of rotation, i.e. the axial direction of travel 2.7 wires in the spindle.
  • this angle of inclination is between 5 and 80 ° and, preferably, it is approximately 30 °.
  • the ring 10 has a convex curved interior surface to ensure good sliding of the wire 7.
  • the ring 10 is constituted by a stainless steel wire.
  • the ring 10 is carried by a vertical blade 11 which, at its lower end, is itself carried by a collar 12 secured to the support 4 of the spindle.
  • the ring 10 is in the form of an ellipse which is determined in such a way that, in axial projection, it appears as a circle which is centered on the axis of the spindle.
  • the ring 10 can be circular, in which case its axial projection is an ellipse more or less flattened according to the angle of inclination of the ring relative to the axis of the spindle.
  • the ring 10 extends over only a part of the length of the coil 6, for example at most over its first third, and its upper part is situated substantially at the entry of the hollow spindle 3.
  • the ring 10 is inclined and located axially only in the first part of the coil 6, it prevents the formation of the usual balloon of large amplitude when the wire 7 comes from the lower end of the coil, while it does not interfere with the unwinding when the wire 7 comes from the upper end of the spool, because then it is not in contact with the wire.
  • the ring 10 when it cooperates with the wire 7, the ring 10, by the friction which it nevertheless exerts on the wire, retains any free fibers which may have caught on and separates them from the wire.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Description

La présente invention est relative à un dispositif pour éliminer les fibres libres portées par le ballon de dévidage d'une bobine. Elle s'applique en particulier, mais non exclusivement, à un tel dispositif utilisé pour la filature guipée, dans laquelle un fil traverse axialement une broche tournante creuse qui porte une bobine de fil de guipage, ce dernier étant entraîné également dans la broche creuse (voir DE-A-2425901).The present invention relates to a device for removing the free fibers carried by the reel unwinding ball. It applies in particular, but not exclusively, to such a device used for wrapped spinning, in which a thread axially passes through a hollow rotating spindle which carries a spool of wrapping thread, the latter also being driven in the hollow spindle ( see DE-A-2425901).

Lorsqu'il existe des fibres libres en suspension, notamment des fibres courtes non guipées, celles-ci sont très souvent happées et accrochées par le ballon de fil, ce qui entraîne soit une casse du fil dans le cas d'une accumulation trop importante de fibres libres, soit un défaut dans le fil résultant du fait que les fibres libres sont entraînées également dans la broche creuse.When there are free fibers in suspension, in particular short fibers which are not gimped, these are very often caught and hooked by the ball of yarn, which leads to either breakage of the yarn in the event of an excessive accumulation of free fibers, a defect in the yarn resulting from the fact that the free fibers are also entrained in the hollow spindle.

L'invention a pour but de remédier à ces inconvénients en fournissant un dispositif simple et fiable qui permette d'éliminer efficacement les fibres libres.The object of the invention is to remedy these drawbacks by providing a simple and reliable device which makes it possible to effectively remove the free fibers.

A cet effet, le dispositif selon l'invention est caractérisé par le fait qu'il comporte un anneau fermé fixe qui entoure la bobine à son extrémité de dévidage et qui présente un plan général incliné d'un angle aigu sur l'axe de rotation de la broche.To this end, the device according to the invention is characterized in that it comprises a fixed closed ring which surrounds the spool at its unwinding end and which has a general plane inclined at an acute angle to the axis of rotation of the spindle.

Par exemple, l'angle d'inclinaison est compris entre 5° et 80°, et vaut de préférence environ 30°.For example, the tilt angle is between 5 ° and 80 °, and is preferably around 30 °.

L'anneau peut être circulaire, avec son centre situé sur l'axe de la broche, de sorte qu'en projection axiale il donne une ellipse. En variante, l'anneau est lui-même elliptique, l'ellipse étant agencée pour que sa projection axiale soit un cercle dont le centre est situé également sur l'axe de la broche.The ring can be circular, with its center located on the axis of the spindle, so that in axial projection it gives an ellipse. As a variant, the ring is itself elliptical, the ellipse being arranged so that its axial projection is a circle whose center is also located on the axis of the spindle.

Dans le sens axial, l'anneau peut s'étendre par exemple sur le premier tiers de la bobine, sa partie supérieure étant située sensiblement au niveau de l'entrée du fil dans la broche creuse.In the axial direction, the ring can extend, for example, over the first third of the coil, its upper part being situated substantially at the level of the entry of the wire into the hollow spindle.

On comprendra bien l'invention à la lecture de la description qui va suivre et en référence au dessin annexé dans lequel:

  • Fig. 1 est une vue schématique en élévation montrant un système de filature guipée comportant le dispositif selon un mode de réalisation de l'invention; et
  • Fig. 2 est une vue de gauche de la Fig. 1 montrant la bobine, une partie de la broche et le dispositif selon l'invention.
The invention will be clearly understood on reading the description which follows and with reference to the appended drawing in which:
  • Fig. 1 is a schematic elevational view showing a wrapped spinning system comprising the device according to an embodiment of the invention; and
  • Fig. 2 is a view from the left of FIG. 1 showing the coil, part of the spindle and the device according to the invention.

On a représenté sur les figures une installation de guipage qui comporte, de manière connue, des rouleaux étireurs d'entrée 1 d'alimentation en fil 2 à guiper, une broche creuse tournante 3, un support fixe 4 pour la broche 3, des moyens 5 portés par la broche 3 pour supporter une bobine coaxiale 6 d'un fil de guipage 7, et des rouleaux délivreurs 8, à la sortie de la broche 3, pour extraire et délivrer le fil guipé 9.There is shown in the figures a wrapping installation which comprises, in known manner, input stretching rollers 1 for feeding wire 2 to be wrapped, a hollow rotating spindle 3, a fixed support 4 for the spindle 3, means 5 carried by the spindle 3 to support a coaxial coil 6 of a wrapping wire 7, and delivery rollers 8, at the outlet of the spindle 3, for extracting and delivering the wrapped thread 9.

Pour éviter que le fil de guipage 7, qui est délivré par la bobine 6, ne forme un ballon de grande amplitude susceptible de happer et d'accrocher les fibres libres en suspension, et pour éliminer les fibres qui se seraient éventuellement accrochées au fil, on prévoit, selon l'invention, un anneau fermé fixe 10 qui entoure à distance la bobine 6, à l'extrémité de dévidage de celle-ci, et qui présente un plan général incliné d'un angle aigu α par rapport à l'axe de rotation de la broche, c'est-à-dire à la direction axiale de défilement des fils 2,7 dans la broche.To prevent the covering yarn 7, which is delivered by the spool 6, from forming a balloon of great amplitude capable of catching and catching the free fibers in suspension, and to eliminate the fibers which may have become attached to the yarn, according to the invention, a fixed closed ring 10 is provided which surrounds the spool 6 at a distance, at the unwinding end thereof, and which has a general plane inclined at an acute angle α relative to the spindle axis of rotation, i.e. the axial direction of travel 2.7 wires in the spindle.

Par exemple, cet angle d'inclinaison est compris entre 5 et 80° et, de préférence, il vaut environ 30°.For example, this angle of inclination is between 5 and 80 ° and, preferably, it is approximately 30 °.

L'anneau 10 présente une surface intérieure courbe convexe pour assurer un bon glissement du fil 7. Par exemple, l'anneau 10 est constitué par un fil en acier inoxydable.The ring 10 has a convex curved interior surface to ensure good sliding of the wire 7. For example, the ring 10 is constituted by a stainless steel wire.

A son extrémité la plus inférieure, l'anneau 10 est porté par une lame verticale 11 qui, à son extrémité inférieure, est elle-même portée par un collier 12 assujetti au support 4 de la broche.At its lower end, the ring 10 is carried by a vertical blade 11 which, at its lower end, is itself carried by a collar 12 secured to the support 4 of the spindle.

Suivant le mode de réalisation préféré représenté, l'anneau 10 est en forme d'ellipse qui est déterminée de telle manière que, en projection axiale, elle apparaisse comme un cercle qui est centré sur l'axe de la broche. En variante, par exemple pour des raisons de simplicité de fabrication, l'anneau 10 peut être circulaire, auquel cas sa projection axiale est une ellipse plus ou moins aplatie suivant l'angle d'inclinaison de l'anneau par rapport à l'axe de la broche.According to the preferred embodiment shown, the ring 10 is in the form of an ellipse which is determined in such a way that, in axial projection, it appears as a circle which is centered on the axis of the spindle. As a variant, for example for reasons of simplicity of manufacture, the ring 10 can be circular, in which case its axial projection is an ellipse more or less flattened according to the angle of inclination of the ring relative to the axis of the spindle.

Dans la direction axiale, l'anneau 10 s'étend sur une partie seulement de la longueur de la bobine 6, par exemple au plus sur son premier tiers, et sa partie supérieure est située sensiblement au niveau de l'entrée de la broche creuse 3.In the axial direction, the ring 10 extends over only a part of the length of the coil 6, for example at most over its first third, and its upper part is situated substantially at the entry of the hollow spindle 3.

Du fait que l'anneau 10 est incliné et situé axialement seulement dans la première partie de la bobine 6, il évite la formation du ballon habituel de grande amplitude quand le fil 7 vient de l'extrémité inférieure de la bobine, alors qu'il ne gêne en rien le dévidage lorsque le fil 7 provient de l'extrémité supérieure de la bobine, car alors il n'est pas en contact avec le fil. Au surplus, quand il coopère avec le fil 7, l'anneau 10, par le frottement qu'il exerce néanmoins sur le fil, retient les éventuelles fibres libres qui se seraient accrochées et les sépare du fil.Because the ring 10 is inclined and located axially only in the first part of the coil 6, it prevents the formation of the usual balloon of large amplitude when the wire 7 comes from the lower end of the coil, while it does not interfere with the unwinding when the wire 7 comes from the upper end of the spool, because then it is not in contact with the wire. In addition, when it cooperates with the wire 7, the ring 10, by the friction which it nevertheless exerts on the wire, retains any free fibers which may have caught on and separates them from the wire.

Claims (6)

1. Device for eliminating the free fibres carried by the unreeling balloon of a reel (6) supported by a rotating spindle (3), characterized in that it comprises a fixed closed ring (10) which surrounds the reel (6) at its unreeling end and which exhibits a general plane slanting by an acute angle (α) to the rotational axis of the spindle (3).
2. Device according to claims 1, characterized in that the slanting angle (α) of the general plane of the ring (10) relative to the axis of the spindle is comprised between 5° and 80° and is preferably about 30°.
3. Device according to either claim 1 or 2, characterized in that the ring (10) is circular and that its centre is situated on the axis of the spindle (3).
4. Device according to either claim 1 or 2, characterized in that the ring (10) is an ellipse arranged so that its axial projection is a circle the centre of which is situated on the axis of the spindle (3).
5. Device according to one of claims 1 to 4, characterized in that the upper part of the ring is situated substantially at the level of the entry of the yarn into the spindle.
6. Device according to one of claims 1 to 5, characterized in that it belongs to a covered spinning installation in which the covering yarn (7) coming from the reel (6) enters the hollow spindle (3) jointly with a yarn (2) to be covered.
EP19880401191 1987-05-22 1988-05-17 Device for eliminating free fibres carried by the yarn balloon during unwinding of a bobbin Expired - Lifetime EP0292377B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8707204 1987-05-22
FR8707204A FR2615532B1 (en) 1987-05-22 1987-05-22 DEVICE FOR ELIMINATING FREE FIBERS CARRIED BY THE COIL BALLOON

Publications (2)

Publication Number Publication Date
EP0292377A1 EP0292377A1 (en) 1988-11-23
EP0292377B1 true EP0292377B1 (en) 1991-09-18

Family

ID=9351340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880401191 Expired - Lifetime EP0292377B1 (en) 1987-05-22 1988-05-17 Device for eliminating free fibres carried by the yarn balloon during unwinding of a bobbin

Country Status (4)

Country Link
EP (1) EP0292377B1 (en)
DE (1) DE3864899D1 (en)
ES (1) ES2025306B3 (en)
FR (1) FR2615532B1 (en)

Also Published As

Publication number Publication date
FR2615532B1 (en) 1989-07-13
ES2025306B3 (en) 1992-03-16
FR2615532A1 (en) 1988-11-25
EP0292377A1 (en) 1988-11-23
DE3864899D1 (en) 1991-10-24

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