EP3231905B1 - Vorrichtung zur unterbrechung der zufuhr eines bündels von fasern und maschine zum spinnen eines kern-mantel garn mit besagter vorrichtung - Google Patents

Vorrichtung zur unterbrechung der zufuhr eines bündels von fasern und maschine zum spinnen eines kern-mantel garn mit besagter vorrichtung Download PDF

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Publication number
EP3231905B1
EP3231905B1 EP14908086.3A EP14908086A EP3231905B1 EP 3231905 B1 EP3231905 B1 EP 3231905B1 EP 14908086 A EP14908086 A EP 14908086A EP 3231905 B1 EP3231905 B1 EP 3231905B1
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Prior art keywords
wedge
filament
roving
roller
feed
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English (en)
French (fr)
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EP3231905A4 (de
EP3231905A1 (de
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Julio Cesar Bourio Castro
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Pinter Caipo SAU
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Pinter Caipo SAU
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/18—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only
    • D01H13/185—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only a plate moving in the nip of drafting or guiding cylinders

Definitions

  • the present invention relates to a device and to a process for interrupting the feed of a roving in the event of the breakage of a continuous filament during the spinning process of core yarn. It likewise relates to a core yarn spinning machine incorporating said device.
  • the manufacture of core yarn by means of the continuous spinning process is well known. Specifically, the manufacture of a core yarn combining one or two filaments with elastic properties on a single spool, covered with the fibres from a cotton roving or similar.
  • the feed of the filament to the drafting device of the spinning machine is carried out under tension and at a predetermined tension draft ratio via a roller acting as a guide for the filament.
  • a continuous filament of elastomeric material such as elastane or spandex fibre, as is the case of the Lycra ® brand. It is known that this continuous filament breaks easily, it being necessary in the event of a breakage to interrupt the feed of roving in time, to prevent the manufacture of a defective filament lacking the filament forming its core.
  • Document US 4,501,114 A discloses an apparatus for arresting and controlling the operation of the draw frame of a textile spinning machines wherein light effected from a moving material is sensed and converted into an alternating electrical signal which is fed to a separate light emitter, such as a light-emitting diode.
  • the electrical signal modulates the light emission. This modulated light emission is sensed by a remotely positioned receiver.
  • the absence of the electrical signal provides a command signal for actuating a control element to arrest the movement of the material (conversely, the presence of the material signal maintains the control element in inoperative function).
  • a stop motion device is actuated to stop the feed of the roving to drafting rolls in response to detecting a yarn break and is subsequently deactuated to permit roving feed during a yarn break repair operation.
  • a stop member has a projecting cam engaging in a recess in a slide member that is manipulated by a spring and an electromagnetic device to control manipulation of the stop member.
  • Document CN 2 844 159 Y discloses a stop device comprising a wedge and a sensor.
  • the sensor is fixed on a yarn guide plate of the spinning yarn frame.
  • An electromagnet is attached to a bracket and this bracket is provided with a slide that supports the wedge. According to this document, when de yarn breaks, the electromagnet moves to release the slide and to activate the wedge in a position that prevents the roving form being fed in.
  • Patent ES2442341T3 reveals a device for interrupting the feed of a roving which dispenses substantially with electronic means and employs mechanical means to interrupt the feed of the roving when the tension of the filament on the roller acting as a guide for the filament ceases.
  • the device revealed in the aforementioned patent presents the drawback that it interrupts the feed by means of a mechanism which cuts the roving at the feed roller intake; therefore, in order to recommence the spinning process the operative must manually insert the roving into the feed roller intake.
  • This manual insertion operation entails a high cost in labour, and decreases the efficiency of the spinning process.
  • the aim of the present invention is to resolve the aforementioned drawbacks, developing a device for interrupting the feed of a roving which presents the advantages to be described below.
  • the present invention provides a device for interrupting the feed of a roving in the event of the breakage of a filament during the process of spinning a core yarn, characterised in that it comprises a wedge arranged for its insertion, in an active position, between a pair of roving feed rollers, said wedge being able to interrupt the feed of the roving by its action on the rollers, said device comprising a mechanism for the activation of the displacement of the wedge to said active position when breakage of the filament occurs.
  • the device claimed presents the advantage that it comprises a wedge which acts on the roving feed rollers to grasp the roving and thus prevent the feed of the roving.
  • the means which interrupt the feed of the roving act on the roving feed rollers and not on the roving itself; for this reason, to recommence the spinning process it is not necessary to manipulate the roving (to insert said roving into the feed roller intake), but merely to release the means acting on the rollers. Consequently, a simple and highly efficient device is obtained.
  • the free end of the roving is arranged at the outlet of the feed rollers and at the intake of the drafting rollers of the spinning machine, as it is the drafting rollers themselves which separate or cut the roving, the roving being grasped between the feed rollers due to the effect of the wedge.
  • the free end of the roving is arranged within a condenser element which captures the roving and automatically directs it to the drafting rollers when the feed is resumed.
  • the wedge is articulately attached to a supporting slide associated with a roller which acts as a guide for the filament of the core yarn, said slide being susceptible to displacement in order to move the wedge to its active position on cessation of the tension of the filament on the roller, when breakage of the filament occurs.
  • said slide is displaceably assembled on a housing of the device in such a way that it is susceptible to accumulating elastic potential energy derived from the compression force applied to a spring, said slide being susceptible to displacement in order to move the wedge to its active position when cessation of the compression force and the tension of the filament on the roller occurs.
  • the roller which acts as a guide for the filament is joined to the extremity of a lever whose opposite extremity incorporates a means to activate the displacement of said slide when the tension of the filament on the roller ceases.
  • the opposite extremity of said lever is associated with a retaining trigger for said supporting slide, said lever incorporating an element acting as a cam to activate the displacement of said slide when the tension of the filament on the roller ceases and said element releases the retaining trigger.
  • the supporting slide of the wedge comprises a notch for the retaining trigger and the spring arranged in such a way that it is susceptible to be compressed on manually displacing the slide until the trigger becomes lodged in the aforementioned notch.
  • said wedge is comprised of a body with a curved surface, configured to surround a portion of the wall of the lower roving feed roller, and a stem to articulately join said body to the wedge supporting slide.
  • a portion of said body with a curved surface is inserted between the roving feed lower roller and upper roller, said portion of the body interrupting the rotation of the upper roller while the lower roller continues to rotate.
  • the upper feed roller is a roller assembled on the pressure arm of the spinning machine. This roller is pressuredly held against the lower roller, which is the drive roller. On inserting the wedge between the two rollers, the upper roller is elevated and ceases to make contact with the lower roller, and the roving is grasped.
  • said supporting slide comprises a plurality of grooves to attach the stem of the wedge in a plurality of positions, each of said grooves determining a predetermined position of the wedge in accordance with the distance separating the bar holding the pressure arm from the feed rollers.
  • said device comprises a casing provided with a housing and a clamp to secure said casing to a bar bearing a number of pressure arms of a core yarn spinning machine.
  • Each of these pressure arms is configured so as to pressuredly hold the upper roving feed roller against the lower roller.
  • said device comprises at least one sensor to detect the movement of the roving supporting slide when the tension of the filament ceases, and a lamp which has been foreseen on the exterior of the casing of the device for the generation of a light signal when said sensor detects the displacement of the slide.
  • This sensor is associated with a magnet installed on the wedge supporting slide. When the slide is displaced in order to activate the wedge, the magnet activates the sensor and the lamp (LED) is illuminated.
  • the present specification refers to a procedure for interrupting the feed of a roving when the breakage of a filament occurs during the process of spinning core yarn, comprising the stage of detecting by a mechanism the breakage of said filament and the stage of separating the roving feed rollers to interrupt the feed of the roving and to grasp the same when breakage of the filament occurs.
  • said stage is carried out by inserting a wedge between the feed rollers in order to separate said rollers and to grasp the roving.
  • the interruption of the feed is carried out by acting upon the rollers in order to interrupt the feed. In this way, it is the drafting rollers themselves which separate or cut the roving when the feed is halted.
  • the procedure comprises the stage of separating or cutting the roving at its intake into the drafting rollers.
  • the procedure comprises the stage of capturing the free end of the roving, once separated or cut, within a condenser element arranged at the outlet of the feed rollers, said free end of the roving being susceptible to be fed automatically into the drafting rollers when the means interrupting the feed cease to be active.
  • the present invention provides a continuous core yarn spinning machine for core yarn incorporating at each spinning position a device to interrupt the feed of the roving in the event of the breakage of the filament such as that claimed herein.
  • continuous filament should be understood to be a filament of textile fibre of an indefinite length, preferably a length of synthetic fibre obtained by extrusion, for example a filament of elastane or of polyester.
  • Roving or “bundle of roving fibres” should be understood to be a bundle of cut cotton, wool, or viscose fibres, or another similar natural or artificial cut fibre, intended for the coating of one or more continuous filaments in the spinning of core yarn.
  • Core yarn should be understood to be a yarn combining a core of one, two or as many as three continuous filaments with a bundle of roving fibres covering the filaments.
  • Core yarn is comprised of a core of at least one continuous filament covered with a roving of fibres.
  • the continuous filament may be, for example, a continuous filament of elastane by the Lycra ® brand.
  • the roving may be, for example, a roving of cotton fibres.
  • FIG. 1 shows a perspective view of an embodiment of a device 1 for interrupting the feed of a roving during the spinning process of core yarn.
  • This device 1 is characterised in that it comprises a wedge 2 articulately joined to a supporting slide 3 associated with a roller 4 which acts as a guide for the filament of core yarn via an activating lever 5.
  • the wedge 2 When breakage of the filament 11 of a spinning position occurs, the wedge 2 is activated and adopts an active position where it is inserted between a pair of feed rollers 6a, 6b of the roving 12 so as to halt the feed of said roving 12 (see figure 5 ).
  • the roller 4 which acts as a guide for the filament 11 is linked to the extremity of the activating lever 5 whose opposite extremity is associated with a retaining trigger 7 of the wedge 2 supporting slide 3 by means of an element 8 which acts as a cam to release said trigger 7 (see figures 2 and 3 ).
  • the wedge 2 supporting slide 3 presents a notch 9 for the trigger 7 and a spring 10 which is arranged in such a way that it may be compressed by manually displacing the slide 3 until the trigger 7 becomes locked in the aforementioned notch 9 (see figure 2 ).
  • the wedge 2 presents a body 2a with a curved surface configured in order to surround a portion of the wall of the lower roving 12 feed roller 6a, and a stem 22 articulately joined to the supporting slide 3.
  • a portion of the body 2a with a curved surface is inserted between the roving 12 feed lower roller 6a and upper roller 6b.
  • the upper roller 6b is elevated and ceases to make contact with the lower roller 6a, interrupting the feed of the roving 12 which, being grasped, is separated or cut prior to entering the drafting rollers 13a, 13b.
  • the free extremity of the roving 12 is captured within a condenser element 14, precisely at the intake of the drafting rollers 13a, 13b; for this reason this extremity may be fed automatically in order to continue with the spinning process once the broken filament 11 has been repaired.
  • the wedge 2 supporting slide 3 must be manually moved so that the wedge 2 frees the rollers 6a, 6b.
  • Figure 4 shows the device 1 with the supporting slide 3 in a forward position and the wedge 2 in a resting position to enable the feed of the roving 12.
  • the tension of the filament 11 on the roller 4 maintains the lever 5 in an elevated position, enabling the supporting slide 3 to remain locked in a forward position, accumulating elastic potential energy derived from the compression force applied to the spring 10.
  • the potential energy accumulated by the spring 10 activates the recoil of the supporting slide 3 when the retaining trigger 7 is freed due to the occurrence of a breakage of the filament 11.
  • the device 1 comprises a casing 15 provided with a housing 16 and a clamp 17 to secure the casing 15 to a bar 18 of the spinning machine 19.
  • Figure 6 shows a view of a spinning machine 19 including a device 1 at each spinning position. As may be seen in this figure 6 , all the devices are attached to the bar 18 bearing the arms 20 which pressuredly hold the upper feed roller 6b and the upper drafting roller 13b against their respective drive rollers 6a, 13a.
  • the distance separating the bar 18 bearing the arms 20 from the feed rollers 6a, 6b may vary, depending on the type of machine 19.
  • the slide 3 supporting the wedge 2 features a plurality of grooves 21 to attach the stem 22 of the wedge 2 in a plurality of positions in accordance with the distance chosen.
  • each device 1 comprises a sensor (not portrayed) to detect the displacement of the supporting slide 3 when the tension of the filament 11 ceases, and with an LED lamp 23 foreseen on the exterior of the casing 15 of each device 1 to generate a light signal when the sensor detects the movement of the supporting slide 3 (see figure 6 ).
  • the operatives receive a visual warning of filament 11 breakage.
  • This sensor may also send a signal to collective warning lights (not portrayed) located at both extremities of the spinning machine.
  • the procedure claimed enables the interrupting of the feed of the roving 12 when breakage of the filament 11 occurs, separating the roving 12 feed rollers 6a, 6b by strictly mechanical means, and grasping the roving 12 and interrupting the feed of the same.
  • the drafting rollers 13a, 13b themselves which separate or cut the roving 12 when the feed is halted, so the free extremity of the roving 12 may be captured within the condenser element 14 installed at the intake of the drafting rollers 13a, 13b in order to automatically recommence the spinning process.
  • the same device 1 is of use for the interrupting of the feed of a roving subsequent to the breakage of a filament of a type different from elastane, for example a polyester filament.

Claims (10)

  1. Vorrichtung (1) zum Unterbrechen der Zufuhr eines Vorgarns (12), wenn während des Prozesses des Spinnens des Umspinnungszwirns ein Bruch eines Fadens (11) auftritt, wobei die Vorrichtung eine Rolle (4) umfasst, die als eine Führung für den Faden (11) des Umspinnungszwirns wirkt, wobei die Rolle (4) an einem Ende eines Hebels (5) befestigt ist, und wobei die Vorrichtung einen Mechanismus (3, 4, 5, 7) zum Aktivieren der Verlagerung eines Keils (2) in Richtung einer aktiven Stellung, wenn ein Bruch des Fadens auftritt, umfasst, dadurch gekennzeichnet, dass:
    - der Keil (2) dafür ausgelegt ist, in seiner aktiven Stellung zwischen ein Paar Zufuhrrollen (6a, 6b) des Vorgarns (12) eingefügt zu sein, wobei der Keil (2) dafür konfiguriert ist, durch Einwirken auf die Zufuhrrollen (6a, 6b) das Unterbrechen der Zufuhr des Vorgarns (12) zu ermöglichen, dass:
    - der Keil (2) mit einem Stützschlitten (3), der der Rolle (4), die als eine Führung für den Faden (11) des Garns wirkt, zugeordnet ist, gelenkig verbunden ist, wobei der Stützschlitten (3) zu einer Verlagerung fähig ist, um den Keil (2) bei Wegfall der Spannung des Fadens (11) an der Rolle (4), wenn ein Bruch des Fadens (11) auftritt, in seine aktive Stellung zu bewegen, dass:
    - das gegenüberliegende Ende des Hebels (5), an dessen Ende die Rolle (4) befestigt ist, einem Halteauslöser (7) für den Stützschlitten (3) zugeordnet ist, und dass
    - der Hebel (5) ein als ein Nocken wirkendes Element (8) enthält, das dafür ausgelegt ist, die Verlagerung des Schlittens (3) zu aktivieren, wenn die Spannung des Fadens (11) an der Rolle (4) aufhört und das Element (8) den Halteauslöser (7) freigibt.
  2. Vorrichtung (1) nach Anspruch 1, wobei der Stützschlitten (3) für die Speicherung elastischer potentieller Energie, die von der auf eine Feder (10) ausgeübten Druckkraft abgeleitet ist, geeignet ist, wobei der Schlitten (3) für eine Verlagerung, um den Keil (2) in seine aktive Stellung zu bewegen, wenn der Wegfall der Druckkraft und der Spannung des Fadens (11) an der Rolle (4) aufhört, geeignet ist.
  3. Vorrichtung (1) nach Anspruch 2, wobei der Stützschlitten (3) des Keils (2) eine Kerbe (9) für den Halteauslöser (7) umfasst und wobei die Feder (10) in der Weise ausgelegt ist, dass sie dafür geeignet ist, durch manuelles Verlagern des Schlittens (3) zusammengedrückt zu werden, bis der Auslöser (7) in der obenerwähnten Kerbe (9) verriegelt wird.
  4. Vorrichtung (1) nach Anspruch 1, wobei der Keil (2) einen Körper (2a) mit einer gekrümmten Oberfläche, der dafür konfiguriert ist, einen Abschnitt der Wand der unteren Zufuhrrolle (6a) des Vorgarns (12) zu umgeben, und einen Stiel (22) zum gelenkigen Verbinden des Körpers (2a) mit dem Stützschlitten (3) des Keils (2) aufweist.
  5. Vorrichtung (1) nach Anspruch 4, wobei in ihrer aktiven Stellung ein Abschnitt des Körpers (2a) mit einer gekrümmten Oberfläche zwischen die untere Zufuhrrolle (6a) und die obere Rolle (6b) des Vorgarns (12) eingeführt ist, wobei der Abschnitt des Körpers (2a) die Drehung der oberen Rolle (6b) unterbricht, während sich die untere Rolle (6a) weiterdreht.
  6. Vorrichtung (1) nach Anspruch 4 und 5, wobei der Stützschlitten (3) mehrere Schlitze (21) zum Befestigen des Stiels (22) des Keils (2) in mehreren Stellungen umfasst, wobei jeder der Schlitze (21) eine vorgegebene Stellung des Keils (2) gemäß der Entfernung, die Lagerdruckarme (20) eines Stabs (18) von den Zufuhrrollen (6a, 6b) trennt, bestimmt.
  7. Vorrichtung (1) nach Anspruch 1, die einen Kasten (15) umfasst, der mit einem Gehäuse (16) und mit einer Klemme (17) derart versehen ist, dass der Kasten (15) an einem Stab (18), an dem eine Anzahl von Druckarmen (20) einer Spinnmaschine (19) montiert sind, befestigt werden kann.
  8. Vorrichtung (1) nach Anspruch 7, die wenigstens einen Sensor zum Detektieren der Längsverlagerung des Stützschlittens (3) des Keils (2), wenn die Spannung des Fadens (11) aufhört, und eine Lampe (23), die außerhalb des Kastens (15) vorgesehen ist, um ein Lichtsignal zu erzeugen, wenn der Sensor die Bewegung des Stützschlittens (3) detektiert, umfasst.
  9. Endlosumspinnungszwirn-Spinnmaschine (19), die mehrere Spinnstellungen umfasst,
    dadurch gekennzeichnet, dass sie bei jeder Spinnstellung eine Vorrichtung (1) zum Unterbrechen der Zufuhr eines Vorgarns (12) nach einem der Ansprüche 1 bis 8, um die Zufuhr des Vorgarns (12) im Fall eines Bruches des Fadens (11) zu unterbrechen, umfasst.
  10. Endlosumspinnungszwirn-Spinnmaschine (19) nach Anspruch 9, zusammen mit der Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Sensor in der Weise konfiguriert ist, dass er an eine Sammelwarnleuchte, die sich an einem Ende der Spinnmaschine (19) befindet, ein Warnsignal in der Weise sendet, dass diese Warnleuchte ebenfalls ein Lichtsignal erzeugt.
EP14908086.3A 2014-12-12 2014-12-12 Vorrichtung zur unterbrechung der zufuhr eines bündels von fasern und maschine zum spinnen eines kern-mantel garn mit besagter vorrichtung Active EP3231905B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2014/070917 WO2016092126A1 (es) 2014-12-12 2014-12-12 Dispositivo para interrumpir la alimentación de una mecha de fibras, procedimiento para interrumpir la alimentación de una mecha de fibras y maquina de hilar hilo core que incorpora dicho dispositivo

Publications (3)

Publication Number Publication Date
EP3231905A1 EP3231905A1 (de) 2017-10-18
EP3231905A4 EP3231905A4 (de) 2018-01-24
EP3231905B1 true EP3231905B1 (de) 2019-06-12

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EP (1) EP3231905B1 (de)
CN (1) CN205241925U (de)
ES (1) ES2712208T3 (de)
TR (1) TR201708600U (de)
WO (1) WO2016092126A1 (de)

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US11598027B2 (en) 2019-12-18 2023-03-07 Patrick Yarn Mills, Inc. Methods and systems for forming a composite yarn

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CN105951232A (zh) * 2016-07-12 2016-09-21 江苏乐华自动化科技有限公司 一种自重力快速感应包芯纱断芯的自断纱装置
CN106205035B (zh) * 2016-08-31 2018-08-28 上海树冠自动化设备有限公司 一种氨纶包芯纱断丝检测报警装置
WO2018073119A1 (en) 2016-10-19 2018-04-26 Amsler Tex Ag Method and device for the detecting failure of supply during the production of complex core yarns
EP3483315B1 (de) * 2017-11-14 2022-06-01 Pinter Caipo, S.A.U. Vorgarnstoppvorrichtung für eine kerngarnspinnmaschine und kerngarnspinnmaschine mit dieser vorgarnstoppvorrichtung
CN110306265A (zh) * 2019-07-13 2019-10-08 经纬智能纺织机械有限公司 一种用于环锭纺纱机上调节中断粗纱进给的装置
CN113445168B (zh) * 2021-06-28 2022-08-23 苏州墨空视觉技术有限公司 一种提高测距准确性的自适应单锭检测系统的方法
CN114753029B (zh) * 2022-04-29 2023-06-20 日照品特裕华纺织科技有限公司 一种双控式环锭纺纱机纱线断头自停系统

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FR2668175A1 (fr) 1990-10-17 1992-04-24 Meyer Michel Sa Entr Dispositif et procede pour casser une meche de fibres dans une machine a filer.
CN2844159Y (zh) 2005-10-24 2006-12-06 太平洋机电(集团)有限公司 细纱断头粗纱自停喂入装置
WO2010006955A1 (de) 2008-07-17 2010-01-21 Amsler Tex Ag Überwachungsverfahren und -vorrichtung zur verwendung in der herstellung von coregarn
EP2329067B1 (de) 2008-07-17 2013-10-16 Amsler Tex AG Überwachungsverfahren und -vorrichtung zur verwendung in der herstellung von coregarn

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11598027B2 (en) 2019-12-18 2023-03-07 Patrick Yarn Mills, Inc. Methods and systems for forming a composite yarn

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CN205241925U (zh) 2016-05-18
TR201708600U (tr) 2017-09-21
EP3231905A4 (de) 2018-01-24
ES2712208T1 (es) 2019-05-09
WO2016092126A1 (es) 2016-06-16
EP3231905A1 (de) 2017-10-18
ES2712208T3 (es) 2019-11-13

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