EP2765102B1 - Method for distributing wound yarn and device for carrying it out - Google Patents

Method for distributing wound yarn and device for carrying it out Download PDF

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Publication number
EP2765102B1
EP2765102B1 EP14153228.3A EP14153228A EP2765102B1 EP 2765102 B1 EP2765102 B1 EP 2765102B1 EP 14153228 A EP14153228 A EP 14153228A EP 2765102 B1 EP2765102 B1 EP 2765102B1
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EP
European Patent Office
Prior art keywords
yarn guide
yarn
belt
synchronous motor
guide
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
EP14153228.3A
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German (de)
English (en)
French (fr)
Other versions
EP2765102A3 (en
EP2765102A2 (en
Inventor
Petr Skvaril
Milan Moravec
Lubomír Fait
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.)
Rieter CZ sro
Original Assignee
Rieter CZ sro
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Publication date
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Publication of EP2765102A3 publication Critical patent/EP2765102A3/en
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Publication of EP2765102B1 publication Critical patent/EP2765102B1/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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B65H54/2887—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38 detecting the position of the yarn guide
    • 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 invention relates to a method for distributing yarn wound onto a cross-wound bobbin at an operating unit of a textile machine, in which a yarn guide actuated by a synchronous motor reciprocates along the axis of the rotation of the wound bobbin, whereby on the synchronous motor a time interval for a reciprocating travel of the yarn guide from one dead centre position to another is set, the position of the yarn guide being synchronized with the reference position which is found between these dead centres.
  • the invention also relates to a device for distributing wound yarn for a winding device of an operating unit of a textile machine, especially of a high-speed open-end spinning machine producing cross-wound bobbins, the device comprising a belt gear coupled with a drive synchronous motor which puts the belt into cyclic reciprocating motion, whereby on one branch of the belt of the drive gear is mounted a yarn guide, arranged movably in the guidance attached to a frame, whereby the distance between the dead centre positions of its motion corresponds to the width of the wound bobbin, whereby the synchronous motor is coupled with the control unit of the operating unit.
  • the bobbin When distributing yarn which is wound to create a cross-wound bobbin, the bobbin rotates and the wound yarn is guided by the yarn guide, reciprocating along the axis of the bobbin rotation.
  • the dead centre positions of this motion are defined by the ends of the yarn package in the area of the wound bobbin faces.
  • the rotary drive of the bobbins, as well as the drive of the reciprocating yarn guides are ensured communally for a row of operating units arranged next to each other.
  • the reciprocating motion of a long distribution rod carrying a plurality of yarn guides results in large inertial forces, by which the frequency of this cyclic motion is limited.
  • the device solves a method for yarn laying and a corresponding distribution device, in which a traversing yarn guide at its travel is actuated by an electric motor, whereby the predetermined position of the guide is defined by the position of the electric motor, and the actual position of the guide is registered by a measuring device.
  • the actual position is continuously registered during the process of winding, whereby the instant actual position is compared to the predetermined desired position of the yarn guide and a corresponding differential signal is generated by the control device to control the operation of the electric motor.
  • the differential signal is used to change the rotational speed of the electric motor.
  • JP2002167125 describes a device for traversing yarn on textile machines, primarily on a false-twisting machine, by reciprocating motion of a yarn traversing guide connected to a belt which is coupled to a reversible drive.
  • the traversing device comprises a sensor for monitoring the passage of the traversing guide and a control means for determining the deviation of the traversing guide from normal reciprocating motion. If the deviation exceeds the reference value, it is assumed that the synchronization has been lost or that the function of the traversing device has worsened.
  • the control means stops the reversible drive which then returns the traversing guide to the initial position at reduced speed.
  • the aim of the invention is to eliminate or at least reduce the drawbacks of the background art and particularly to increase considerably the working speed of yarn distribution, as well as shorten extraneous unproductive periods which are caused by the elaborateness of device setting before its start-up.
  • the objective of the invention is achieved by a method for distributing yarn wound onto a cross-wound bobbin at an operating unit of a textile machine, whose principle is that during each reciprocating travel the time point of the actual passing of the yarn guide through the reference position is detected and a time difference between the actual passing of the yarn guide through the reference position and the predetermined theoretical time point of the passing of the yarn guide through the reference position is evaluated and, on the basis of the recorded time difference, the duration of the synchronous motor rotation till the moment of a corresponding reciprocating travelchanges, and, consequently, it leads to the change of the length of the path of the yarn guide from the reference position to the dead centre to which the guide is currently approaching.
  • Monitoring the time point of the passing of the yarn guide through one set reference position simplifies the operation of the device and makes it more precise, which favourably influences the quality of the yarn package, life service of the device and its reliability.
  • the goal of the invention is also achieved by a device for distributing wound yarn for a winding device of an operating unit of a textile machine, whose principle consist in that the drive synchronous motor is a high-speed disk two-phase motor with a feedback element and an extremely low inertia moment, which is coupled to a sensing device of the passing of a marking means of a yarn guide attached to one branch of a belt of a belt gear.
  • the motor used is during traversing capable of operating at a constant speed.Also, placing the sensing device of the passing of the marking means of the yarn guide in the middle between the dead centres of the motion of the yarn guide is a factor that contributes to it.
  • the sensing device comprises at least one contactless magnetic sensor, whereby the marking means of the yarn guide is composed of at least one magnet.
  • This arrangement is simple, reliable and precise. It is especially advantageous to use a permanent magnet as a marking means.
  • the synchronous motor drive is realized by a two-phase disk synchronous motor with a feedback element.
  • This type of motor has a very low moment of inertia, therefore it can work at a very high rotation speed - it has a maximum speed of 5000 rpm and a maximum inertia moment of 7 kgm 2 .10 -7 .
  • the belt gear is realized by a flat belt, wherein its surface, which is in contact with the pulleys, comprises an electrically conductive layer.
  • the friction surface of the drive pulley is provided with an adhesive abrasion resistant material.
  • a tension means of the belt coupled with the driven pulley contributes to achieving that purpose.
  • the guidance of the yarn guide is composed of an on a stationary frame mounted guide rail, to which a sensing device is fixedly attached. It is advantageous if at least the surface of the guide rail, which is in contact with the yarn guide, is provided with a hard surface coating displaying a low friction coefficient.
  • FIG. 1 represents a front view of the device for distributing wound yarn
  • Fig. 2 is a side view in a direction P from Fig. 1 .
  • Winding devices that are driven individually according to the background art enable to increase the frequency of the reciprocating motion of the yarn guides, but there are still problems to be solved, namely the dynamics of the reciprocating motion of the yarn guides at extreme frequencies of this motion and a complexity of the control process of this motion with respect to the desired shape of the yarn package.
  • a driving roller 11 driven by an unillustrated drive electric motor.
  • a winding bobbin 2 In contact with the surface of the driving roller 11 is a winding bobbin 2 arranged in a well-known manner in an unillustrated winding device of the operating unit.
  • a guide rail 12 of a yarn guide 3 is mounted in a frame 1 parallel with the axes of the rotation of the driving roller 11 and the wound bobbin 2 .
  • a belt gear 4 comprising a drive pulley 41 and a driven pulley 42 is arranged parallel with the guide rail 12 .
  • the drive pulley 41 and the driven pulley 42 are situated outside the front faces of the driving roller 11 .
  • the drive pulley 41 is mounted on an output shaft of a synchronous motor 43 .
  • the driven pulley 42 is coupled with an unillustrated tension means.
  • the drive pulley 44 runs in a vertical plane.
  • the driven pulley 42 is coupled with an unillustrated tension device, or, in another embodiment, the tension of the belt 44 is solved by an unillustrated tension pulley
  • the belt gear 4 uses a flat belt 44 , whose friction surface is formed by a coating having a sufficiently high friction coefficient, whereby it is also partially electrically conductive so as to eliminate an occurrence of an electrostatic charge.
  • a carrying body 31 of the yarn guide 3 mounted in an unillustrated manner on the upper branch of the belt 44 is a carrying body 31 of the yarn guide 3 created from a material with a low friction coefficient.
  • an independent ceramic guide means 32 Fastened to the carrying body 31 of the yarn guide 3 is an independent ceramic guide means 32 , which is in contact with the running distributed yarn.
  • the carrying body 31 of the yarn guide 3 is movably arranged in a groove 13 of the guide rail 12 , which has a hard surface finish on account of achieving minimum abrasion and which has a minimum coefficient of friction.
  • a contactless position sensing device 5 provided with a magnetic sensor 51 turned towards the path of the guidance of the yarn guide 3 .
  • a permanent magnet 33 which acts as a marking means of the yarn guide 3 .
  • an electromagnet is used instead of a permanent magnet 33 .
  • Both the drive synchronous motor 43 and the position sensing device 5 fastened to the guide rail 12 are coupled with the unillustrated control unit of the operating unit of the textile machine using feedback signals, by which the control unit is informed about the state of the drive.
  • the overall configuration of the system of yarn distribution according to the invention is solved as a mechanical electronic system with emphasis on a minimum moment of inertia of the moving parts. Thus it is possible to achieve especially maximum and minimum accelerations of the reciprocating parts.
  • the solution is aimed especially at the means of the belt pulley 4 and at the controlling of the movement of the yarn guide 3 , or, more specifically, its position within an extent of the distance V between the dead centres U1 , U2 , mainly in the area of these dead centres U1 , U2 .
  • a high-speed disk two-phase motor 43 with an extremely low moment of inertia is used as a driving synchronous motor 43 .
  • Its maximum speed is, for example, 5000 min -1 and the moment of inertia is 7 kgm 2 .10 -7 .
  • the actual position of the yarn guide 3 is registered by a sensing device 5 , which identifies the time point in which the marking means of the yarn guide 3 , that is the permanent magnet 33 , is positioned against the magnetic sensor 51 of the sensing device 5 .
  • the actual position of the yarn guide 3 is recorded only in the middle of the distance V , that means exactly in the middle between the dead centres U1 , U2 of the motion of the yarn guide 3 .
  • synchronization of the yarn guides is carried out by a magnetic sensor 51 of the sensing device 5 .
  • the reference position of the yarn guide 3 is defined only by the sensing device 5 situated immovably in the middle of the path of the yarn guide 3 .
  • the actual position of the yarn guide 3 is registered by the sensing device 5 during the passing of the yarn guide 3 in one and the other direction of its motion.
  • the time points of the passing are recorded, whereby a time deviation from the predetermined time point of the passing is monitored. This deviation is recorded, the differential value occurs as a result of the belt 44 slip on the surface of the drive pulley 41 .
  • the time points of the passing of the permanent magnet 33 around the magnetic sensor 51 of the sensing device 5 are passed to the control unit of the operating unit of the textile machine as input signals.
  • a slip correction factor is generated as a time data, which is subtracted from or added to the predetermined (theoretical) duration of the path of the yarn guide 3 .
  • the resulting time indication is used for the subsequent reciprocating travel of the yarn guide controlled by a synchronous motor 43 .
  • the position of the yarn guide in dead centres U1 , U2 of its motion is adjusted. Corrections of the position are then performed by changing the length of the path of the yarn guide 3 , by which means practically upon each reciprocating travel of the yarn guide the dead centre positions U1 , U2 are adjusted to achieve the predetermined (theoretical) position.
  • the speed of the motion of the synchronous motor 43 remains constant.
  • the device according to the invention and the method for carrying it out is made simpler by a system of controlling the motion of the yarn guide 3 , which added to employing a disk two-phase synchronous motor 43 and its constant rotational speed substantially reduces the negative impact of the inertial forces both in terms of the package quality and in terms of service life and reliability of the device.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP14153228.3A 2013-02-07 2014-01-30 Method for distributing wound yarn and device for carrying it out Active EP2765102B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2013-80A CZ304677B6 (cs) 2013-02-07 2013-02-07 Způsob rozvádění navíjené příze a zařízení k jeho provádění

Publications (3)

Publication Number Publication Date
EP2765102A2 EP2765102A2 (en) 2014-08-13
EP2765102A3 EP2765102A3 (en) 2017-12-20
EP2765102B1 true EP2765102B1 (en) 2020-01-15

Family

ID=50028875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14153228.3A Active EP2765102B1 (en) 2013-02-07 2014-01-30 Method for distributing wound yarn and device for carrying it out

Country Status (3)

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EP (1) EP2765102B1 (cs)
CN (1) CN103979365B (cs)
CZ (1) CZ304677B6 (cs)

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CN105775352A (zh) * 2014-12-23 2016-07-20 常熟市鑫盛制袋有限责任公司 宽丝编织袋的加工装置
CN105775904A (zh) * 2014-12-23 2016-07-20 常熟市鑫盛制袋有限责任公司 宽丝编织袋的定型装置
CN105773955A (zh) * 2014-12-23 2016-07-20 常熟市鑫盛制袋有限责任公司 对宽丝编织袋进行拉丝的拉丝装置
CN105780441A (zh) * 2014-12-23 2016-07-20 常熟市鑫盛制袋有限责任公司 对宽丝编织袋进行切边的切边机构
CN105858329B (zh) * 2015-01-19 2020-12-08 舍弗勒技术股份两合公司 纱线引导机构以及具有它的纺织机
CZ306286B6 (cs) * 2015-03-17 2016-11-16 Rieter Cz S.R.O. Textilní stroj s kontinuální dodávkou vyráběné příze a navíjením příze na kuželovou křížem vinutou cívku
DE102016002762B4 (de) * 2016-03-05 2023-05-25 Saurer Spinning Solutions Gmbh & Co. Kg Fadenchangiereinrichtung für eine Spulvorrichtung einer Kreuzspulen herstellenden Textilmaschine
DE102019104570A1 (de) * 2018-03-02 2019-09-05 Oerlikon Textile Gmbh & Co. Kg Verfahren und Messvorrichtung zur Funktionsprüfung einer Flügelchangierung
CN112061868A (zh) * 2020-09-11 2020-12-11 李玉凤 一种轨道交通电缆收卷设备及其使用方法
CN115057064B (zh) * 2022-05-09 2024-04-02 广州南洋电缆集团有限公司 一种剥带装置的控制方法、剥带装置及存储介质
LU505517B1 (de) * 2023-11-15 2025-05-15 Saurer Spinning Solutions Gmbh & Co Kg Verfahren zum Durchführen eines Hülsenwechsels

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Also Published As

Publication number Publication date
CZ201380A3 (cs) 2014-08-27
CN103979365B (zh) 2019-04-30
CZ304677B6 (cs) 2014-08-27
EP2765102A3 (en) 2017-12-20
CN103979365A (zh) 2014-08-13
EP2765102A2 (en) 2014-08-13

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