EP0491104B1 - Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure - Google Patents

Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure Download PDF

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Publication number
EP0491104B1
EP0491104B1 EP90500124A EP90500124A EP0491104B1 EP 0491104 B1 EP0491104 B1 EP 0491104B1 EP 90500124 A EP90500124 A EP 90500124A EP 90500124 A EP90500124 A EP 90500124A EP 0491104 B1 EP0491104 B1 EP 0491104B1
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EP
European Patent Office
Prior art keywords
torsion
yarn
untwisting
excess
held
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
EP90500124A
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German (de)
French (fr)
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EP0491104A1 (en
Inventor
Carlos Pujol-Isern
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Individual
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Priority to ES90500124T priority Critical patent/ES2069724T3/en
Priority to DE69017698T priority patent/DE69017698T2/en
Priority to EP90500124A priority patent/EP0491104B1/en
Priority to US07/808,915 priority patent/US5277018A/en
Priority to JP3335163A priority patent/JPH04298460A/en
Publication of EP0491104A1 publication Critical patent/EP0491104A1/en
Application granted granted Critical
Publication of EP0491104B1 publication Critical patent/EP0491104B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • 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, on the one hand, to a method for joining two ends of wire to one another according to the preamble of claim 1, and, on the other hand, to a connection obtained by this process.
  • EP-B-0 100 389 has already proposed a reattachment method according to which an overdetortion is induced in the two segments of wires to be reattached and then these two segments thus over-twisted are assembled side by side and head to tail. reintroduces the twist.
  • the negative torsion induced in the segments of wire to be attached has the effect of producing a mutual compression of the segments at the time of the twisting, of making the fibers of the elementary wires practically parallel, consequently obtaining the maximum contact surface between the two wires.
  • the object of the present invention is to solve the above-mentioned problem by forming different torsion zones along the connecting segment of the two threads in order to reinforce the two ends of this segment in which the ends of two barbs of fibers tend not to participate in the twist and reduce the resistance of the piecing.
  • the present invention relates to a method for attaching two ends of the wire to one another according to claim 1. It also relates to a connection obtained by this method.
  • each beard is finally subjected to an over-twisting of the fact that it begins to be wrapped around the part over-twisted when we start to induce torsion again. Since the free end of each beard has not undergone over-twisting, by the time the sudetorded portion is twisted and goes through a zero twist, the beard is already wrapped around this portion of the base of the beard, so that once the piecing is complete, these barbed ends will have a higher twist than the rest of the segment of piecing the wires.
  • FIG. 1 to 5 illustrate the different phases of the process.
  • Figure 1 shows two textile yarns made of spun fibers 1 and 2 that we want to attach.
  • wire 1 has been drawn in black while wire 2 has been drawn in white.
  • each of the wires is grasped between two clamps 3, 4 respectively 5, 6.
  • the clamps 4 and 5 are rotatably mounted around an axis which merges with the wire which they pinch.
  • the length separating two clips gripping the same wire is at least equal to the average length of the fibers forming the wire.
  • the clamps 4 and 5 are rotated in the opposite direction to the twist of the respective wires.
  • the clamp 4 rotates in the direction F1 while the clamp 5 rotates in the opposite direction F2.
  • the number of turns is chosen equal to that of the twist of the wires 1 and 2, so that the fibers of the segments of wires located between Your clips 3, 4 respectively 5, 6 are substantially parallel at least in majority.

Landscapes

  • Ropes Or Cables (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Decoration Of Textiles (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

La présente invention se rapporte, d'une part, à un procédé pour rattacher deux extrémités de fil l'une à l'autre selon le préambule de la revendication 1, et, d'autre part, à une rattache obtenue par ce procédé.The present invention relates, on the one hand, to a method for joining two ends of wire to one another according to the preamble of claim 1, and, on the other hand, to a connection obtained by this process.

Un tel procédé est décrit dans le EP-A-0 249 578. Le problème que l'on rencontre avec le mode de rattache selon lequel on cherche à recréer la torsion dans les extrémités du fil rattachées, est celui des extrémités des barbes qui tendent à ne pas participer à la torsion induite dans ces extrémités, diminuant la résistance de la rattache.Such a method is described in EP-A-0 249 578. The problem which one encounters with the method of connection according to which one seeks to recreate the twist in the ends of the attached wire, is that of the ends of the beards which tend not to participate in the torsion induced in these ends, reducing the resistance of the piecing.

On a déjà proposé dans le EP-B-0 100 389 un procédé de rattache selon lequel on induit une surdétorsion dans les deux segments de fils à rattacher puis on assemble côte-à-côte et tête-bêche ces deux segments ainsi surdétordus puis on réintroduit la torsion. La torsion négative induite dans les segments de fil à rattacher a pour effet de produire une compression mutuelle des segments au moment de la retorsion, de rendre les fibres des fils élémentaires pratiquement parallèles procurant par conséquent la surface de contact maximum entre les deux fils.EP-B-0 100 389 has already proposed a reattachment method according to which an overdetortion is induced in the two segments of wires to be reattached and then these two segments thus over-twisted are assembled side by side and head to tail. reintroduces the twist. The negative torsion induced in the segments of wire to be attached has the effect of producing a mutual compression of the segments at the time of the twisting, of making the fibers of the elementary wires practically parallel, consequently obtaining the maximum contact surface between the two wires.

Le but de la présente invention est de résoudre le problème sus-mentionné en formant des zones de torsion différentes le long du segment de rattache des deux fils en vue de renforcer les deux extrémités de ce segment dans lesquelles les extrémités de deux barbes de fibres tendent à ne pas participer à la torsion et à réduire la résistance de la rattache.The object of the present invention is to solve the above-mentioned problem by forming different torsion zones along the connecting segment of the two threads in order to reinforce the two ends of this segment in which the ends of two barbs of fibers tend not to participate in the twist and reduce the resistance of the piecing.

A cet effet la présente invention a pour objet un procédé pour rattacher deux extrémités de fil l'une à l'autre selon la revendication 1. Elle a également pour objet une rattache obtenue par ce procédé.To this end, the present invention relates to a method for attaching two ends of the wire to one another according to claim 1. It also relates to a connection obtained by this method.

Grâce à la surdétorsion induite localement à la base de chaque barbe après l'assemblage tête-bêche de celles-ci, l'extrémité libre de chaque barbe est finalement soumise à une surtorsion du fait qu'elle commence à être enroulée autour de la partie surdétordue au moment où on commence à induire à nouveau la torsion. Etant donné que l'extrémité libre de chaque barbe n'a elle pas subi la surdétorsion, au moment où la portion sudétordue est retordue et passe par une torsion nulle, la barbe est déjà enroulée autour de cette portion de la base de la barbe, de sorte qu'une fois la rattache terminée, ces extrémités de barbes auront une torsion plus élevée que le reste du segment de rattache des fils.Thanks to the overdetortion induced locally at the base of each beard after the head-to-tail assembly of these, the free end of each beard is finally subjected to an over-twisting of the fact that it begins to be wrapped around the part over-twisted when we start to induce torsion again. Since the free end of each beard has not undergone over-twisting, by the time the sudetorded portion is twisted and goes through a zero twist, the beard is already wrapped around this portion of the base of the beard, so that once the piecing is complete, these barbed ends will have a higher twist than the rest of the segment of piecing the wires.

Le dessin annexé illustre, schématiquement et à titre d'exemple, une forme d'exécution du procédé objet de la présente invention.The appended drawing illustrates, schematically and by way of example, an embodiment of the method which is the subject of the present invention.

Les figures 1 à 5 illustrent les différentes phases du procédé.Figures 1 to 5 illustrate the different phases of the process.

L'appareil utilisé pour la mise en oeuvre du procédé objet de l'invention ne sera pas décrit ici, étant donné qu'il s'agit d'un appareil de même conception que celui qui est illustré et décrit dans le EP-A1-0 249 578 auquel on pourra se référer.The apparatus used for implementing the process which is the subject of the invention will not be described here, given that it is an apparatus of the same design as that which is illustrated and described in EP-A1- 0 249 578 to which one can refer.

La figure 1 montre deux fils textiles en fibres filées 1 et 2 que l'on veut rattacher. En vue de faciliter la compréhension du procédé, le fil 1 a été dessiné en noir tandis que le fil 2 a été dessiné en blanc. On saisit premièrement chacun des fils entre deux pinces 3, 4 respectivement 5, 6. Les pinces 4 et 5 sont montées rotativement autour d'un axe qui se confond avec le fil qu'elles pincent. La longueur séparant deux pinces serrant un même fil est au moins égale à la longueur moyenne des fibres formant le fil. On fait tourner les pinces 4 et 5 en sens contraire de la torsion des fils respectifs. La pince 4 tourne dans le sens F₁ tandis que la pince 5 tourne dans le sens opposé F₂. Le nombre de tours est choisi égal à celui de la torsion des fils 1 et 2, de sorte que les fibres des segments de fils situés entre Tes pinces 3, 4 respectivement 5, 6 sont sensiblement parallèles au moins en majorité.Figure 1 shows two textile yarns made of spun fibers 1 and 2 that we want to attach. In order to facilitate understanding of the process, wire 1 has been drawn in black while wire 2 has been drawn in white. Firstly, each of the wires is grasped between two clamps 3, 4 respectively 5, 6. The clamps 4 and 5 are rotatably mounted around an axis which merges with the wire which they pinch. The length separating two clips gripping the same wire is at least equal to the average length of the fibers forming the wire. The clamps 4 and 5 are rotated in the opposite direction to the twist of the respective wires. The clamp 4 rotates in the direction F₁ while the clamp 5 rotates in the opposite direction F₂. The number of turns is chosen equal to that of the twist of the wires 1 and 2, so that the fibers of the segments of wires located between Your clips 3, 4 respectively 5, 6 are substantially parallel at least in majority.

A ce moment on exerce une traction (flèches F₃, F₄) sur ces segments de fils à fibres parallèlisées pour séparer les fibres qui tiennent aux pinces 4 et 5 de celles qui tiennent aux pinces 3 et 6. Les fibres qui tiennent aux pinces 3 et 6 sont éliminées et les autres sont réunies entre deux plaquettes 7 et 8 qui sont disposées obliques par rapport à la ligne droite qui relie les pinces 4 et 5, de sorte que les fibres des deux barbes tenues par ces pinces glissent les unes contre les autres dans la partie située entre les plaquettes 7 et 8. Les extrémités libres des barbes sont libres tandis que les bases de ces barbes sont tendues entre les plaquettes 7 et 8 et les pinces 4 respectivement 5, comme illustré par la figure 2.At this time, traction is exerted (arrows F₃, F₄) on these segments of threads with parallel fibers to separate the fibers which hold on to the clamps 4 and 5 from those which hold on to the clamps 3 and 6. The fibers which hold on to the clamps 3 and 6 are eliminated and the others are joined between two plates 7 and 8 which are arranged obliquely to the straight line which connects the pliers 4 and 5, so that the fibers of the two barbs held by these pliers slide against each other in the part located between the plates 7 and 8. The free ends of the barbs are free while the bases of these barbs are stretched between the plates 7 and 8 and the clamps 4 respectively 5, as illustrated in FIG. 2.

Lorsque les deux segments de fils à rattacher se trouvent dans cette position, on fait de nouveau tourner les pinces 4 et 5 dans le sens des flèches F₁ respectivement F₂, induisant de ce fait une surdétorsion dans la portion de la base des barbes de fibres situées entre les pinces respectives 4 et 5 et les plaquettes 7 et 8 qui serrent les parties médianes des barbes l'une contre l'autre. Cette surdétorsion a notamment pour effet de tendre fortement la portion de la base des barbes de fibres.When the two segments of wires to be attached are in this position, the clamps 4 and 5 are again rotated in the direction of the arrows F₁ respectively F₂, thereby inducing an over-twist in the portion of the base of the fiber barbs located between the respective clamps 4 and 5 and the plates 7 and 8 which clamp the middle parts of the barbs against each other. This over-distortion notably has the effect of strongly stretching the portion of the base of the fiber barbs.

Dans un premier temps (fig. 3), on commence par faire tourner les pinces 4 et 5 en sens inverse c'est-à-dire respectivement dans les sens F₂ et F₁, ce qui a pour effet de ramener progressivement la torsion dans les portions surdétordues, à zéro. Pendant cette rotation axiale dans le sens de la torsion de ces portions surdétordues, les extrémités libres des barbes de fibres sont entraînées en rotation hélicoïdale autour de ces portions surdétordues, de sorte que, lorsque la torsion de ces portions surdétordues est ramenée à zéro, les extrémités libres de ces barbes ont déjà une torsion positive.At first (fig. 3), we start by rotating the clamps 4 and 5 in the opposite direction, that is to say respectively in the directions F₂ and F₁, which has the effect of gradually reducing the twist in the over-twisted portions, to zero. During this axial rotation in the direction of the twist of these over-twisted portions, the free ends of the fiber barbs are driven in helical rotation around these over-twisted portions, so that, when the twist of these over-twisted portions is reduced to zero, the free ends of these beards already have a positive twist.

Ensuite, on desserre les plaquettes 7 et 8 et on continue à tourner les pinces 4 et 5 dans le sens de la torsion, de sorte que la torsion se propage dans la partie médiane du segment de fibres depuis ses deux extrémités jusqu'à ce que la torsion soit complètement rétablie.Then loosen the pads 7 and 8 and continue to rotate the clamps 4 and 5 in the direction of the twist, so that the twist propagates in the middle part of the segment of fibers from its two ends until the torsion is fully restored.

Etant donné que les extrémités libres des barbes de fibres avaient déjà quelques tours de torsion au moment où le reste de ces barbes de fibres avaient une torsion nulle, le fil résultant a une torsion plus élevée aux deux extrémités de la rattache que dans la partie médiane, comme illustré par la figure 5. Cette surtorsion garantit que toutes les fibres participent à la torsion jusqu'à l'extrémité des barbes et confère à la rattache une résistance accrue qui se situe généralement au-dessus de 80 % de la résistance initiale du fil, ainsi qu'un aspect très comparable à celui du fil.Since the free ends of the fiber barbs already had a few turns of twist at the time when the rest of these fiber barbs had zero twist, the resulting yarn has a higher twist at both ends of the piecing than in the middle part , as illustrated in FIG. 5. This overvoltage guarantees that all the fibers participate in the twisting up to the end of the barbs and gives the piecing an increased resistance which is generally above 80% of the initial resistance of the wire, as well as an aspect very comparable to that of wire.

Claims (2)

  1. A process for joining together two ends of yarn, wherein each of the two ends are held at two points which are longitudinally distant, and axial untwisting of the yarn is brought about by transferring the torsion of the said ends to the adjacent portion of the yarn, by rotating one of the points at which each of the ends is held, and whilst exerting axial traction, that point at which each end was held but which did not produce the untwisting is moved away in order to form a tuft by releasing those fibres which are not held at the said end, and the ends are joined head-to-foot alongside one another by clamping the central portion thereof, and, once joined in this manner, torsion is re-transferred to the said ends to recreate the torsion of the yarn, characterised in that before re-transferring the torsion towards the said ends, excess untwisting is produced in the untwisted portion of each end, between the said clamped central part and the respective holding points via which the initial untwisting was introduced, the excess untwisting being axial with simultaneous winding of the ends of the released fibres about the portion which has undergone excess untwisting, and the torsion is then re-transferred and the central portion of the joined ends is released during the course of the said re-transferring process.
  2. A connection between two ends of yarn, produced in accordance with claim 1, characterised in that it comprises a central segment in which the two joined ends of yarn have a standard torsion close to the initial torsion of the yarn, whilst localised excess torsion exists on either side of the said central segment.
EP90500124A 1990-12-19 1990-12-19 Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure Expired - Lifetime EP0491104B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES90500124T ES2069724T3 (en) 1990-12-19 1990-12-19 PROCEDURE TO KNOT BETWEEN TWO END OF THREAD AND KNOTTING OBTAINED BY THIS PROCEDURE.
DE69017698T DE69017698T2 (en) 1990-12-19 1990-12-19 Method of splicing two yarns together and splicing produced by this method.
EP90500124A EP0491104B1 (en) 1990-12-19 1990-12-19 Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure
US07/808,915 US5277018A (en) 1990-12-19 1991-12-18 Method for connecting two yarn ends to one another and a connection obtained by this method
JP3335163A JPH04298460A (en) 1990-12-19 1991-12-18 Method of joining two yarn tip and joining section obtained through said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90500124A EP0491104B1 (en) 1990-12-19 1990-12-19 Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure

Publications (2)

Publication Number Publication Date
EP0491104A1 EP0491104A1 (en) 1992-06-24
EP0491104B1 true EP0491104B1 (en) 1995-03-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90500124A Expired - Lifetime EP0491104B1 (en) 1990-12-19 1990-12-19 Procedure to splice two ends of yarn, one to the other, and the connection obtained by this procedure

Country Status (5)

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US (1) US5277018A (en)
EP (1) EP0491104B1 (en)
JP (1) JPH04298460A (en)
DE (1) DE69017698T2 (en)
ES (1) ES2069724T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6584677B2 (en) 2001-02-13 2003-07-01 Medallion Technology, Llc High-speed, high-capacity twist pin connector fabricating machine and method
US6530511B2 (en) 2001-02-13 2003-03-11 Medallion Technology, Llc Wire feed mechanism and method used for fabricating electrical connectors
US6729026B2 (en) * 2001-02-13 2004-05-04 Medallion Technology, Llc Rotational grip twist machine and method for fabricating bulges of twisted wire electrical connectors
CN100999844B (en) * 2006-01-11 2010-12-08 上海梅花刺轴有限公司 Process to yarn making non-knot twist contecting and thread rolling device using said method
CN103526522B (en) * 2013-10-30 2015-08-26 朱德仲 A kind of rapid wiring device of twine machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515172A (en) * 1948-04-30 1950-07-18 Abbott Machine Co Splicing threads
CS207751B2 (en) * 1977-12-28 1981-08-31 Murata Machinery Ltd Sliced end of the yarns and method of making the same
JPS55106968A (en) * 1979-02-09 1980-08-16 Murata Mach Ltd Pneumatic type thread connector
JPS5767466A (en) * 1980-05-05 1982-04-24 Commw Scient Ind Res Org Method and apparatus for joining thread together
DE3270463D1 (en) * 1981-11-04 1986-05-15 Savio Spa Splicer device to disassemble and recompose yarn mechanically
IT1158133B (en) * 1982-08-03 1987-02-18 Savio Spa PROCEDURE FOR OBTAINING JUNCTIONS BETWEEN WIRES
EP0249578B1 (en) * 1986-06-11 1991-02-06 Carlos Pujol-Isern Method and apparatus for joining two textile yarns together

Also Published As

Publication number Publication date
JPH04298460A (en) 1992-10-22
DE69017698D1 (en) 1995-04-13
EP0491104A1 (en) 1992-06-24
DE69017698T2 (en) 1995-08-17
US5277018A (en) 1994-01-11
ES2069724T3 (en) 1995-05-16

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