EP3460113A1 - Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées - Google Patents

Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées Download PDF

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Publication number
EP3460113A1
EP3460113A1 EP17192021.8A EP17192021A EP3460113A1 EP 3460113 A1 EP3460113 A1 EP 3460113A1 EP 17192021 A EP17192021 A EP 17192021A EP 3460113 A1 EP3460113 A1 EP 3460113A1
Authority
EP
European Patent Office
Prior art keywords
knitting machine
warp knitting
thread
needles
delivery drive
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.)
Granted
Application number
EP17192021.8A
Other languages
German (de)
English (en)
Other versions
EP3460113B1 (fr
Inventor
Klaus Brandl
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.)
Karl Mayer Stoll R&D GmbH
Original Assignee
Karl Mayer Textilmaschinenfabrik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Karl Mayer Textilmaschinenfabrik GmbH filed Critical Karl Mayer Textilmaschinenfabrik GmbH
Priority to EP17192021.8A priority Critical patent/EP3460113B1/fr
Priority to TW107129333A priority patent/TWI801408B/zh
Priority to KR1020180111477A priority patent/KR102072812B1/ko
Priority to CN201811101110.1A priority patent/CN109518352B/zh
Publication of EP3460113A1 publication Critical patent/EP3460113A1/fr
Application granted granted Critical
Publication of EP3460113B1 publication Critical patent/EP3460113B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/06—Patterned fabrics or articles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/12—Tensioning devices for individual threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/14—Thread tensioning rod arrangements
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/34—Take-up or draw-off devices for knitted products
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/12—Indicating, warning, or safety devices, e.g. stop motions responsive to thread consumption

Definitions

  • the invention relates to a method for incorporating a warp knitting machine with a new pattern, in which one pulls threads of a chain in guide needles and forms by interaction of the guide needles with knitting needles at least one course.
  • the invention relates to a warp knitting machine with at least one main shaft, at least one guide bar, at least one knitting needle bar, a thread balancing device, at least one delivery drive and at least one fabric take-off.
  • the necessary data is generally available.
  • the data includes, among other things, the laying, a size for the thread inlet and a size for the fabric removal. So if a warp knitting machine must be incorporated, for example, because a warp beam has been completely processed or retrofitted the warp knitting machine to another pattern
  • the operator pulls the threads into the guide needles, creates one or more courses, pulling the threads taut by hand after each stitching operation, then activates the delivery drive with a predetermined thread break value, allowing the machine to produce a series of further stitches until you are able to deduct the resulting knitted fabric with the fabric, then turns on the fabric and can start production.
  • the laying is predetermined, i. the course of movement of the guide needles against the knitting needles.
  • the thread entry must be determined empirically, for example. For this purpose, a certain experience and a corresponding feeling of the operator are required. Each step involves a risk of operator error and lack of expertise. This can cause damage to the active elements and / or to the process material, for example the yarn. The incorporation is therefore time consuming and costly.
  • the invention has for its object to facilitate the incorporation of a warp knitting machine in a new pattern.
  • This object is achieved in a method of the type mentioned in that it determines a voltage of the incoming filaments and limited to a predetermined maximum value.
  • the limitation of the thread tension avoids excessively high thread tensions. This considerably reduces the risk of damage to the knitting tools or the thread material.
  • limiting the tension of the incoming filaments allows one Limitation in terms of the freely selectable parameters, so that the operator can only work in a limited work area. This further facilitates the incorporation, because the possibilities of variation and thus also the possibilities of error can be kept small.
  • the tension of the circulating threads is in this case preferably determined on a component that does not directly thread the thread. It is not the tension of a single thread, but a tension in the totality of the threads provided by a tree.
  • the course is formed in creeper. So you can operate the warp knitting machine at a very low speed, as long as you incorporate the new pattern.
  • the tensions of the threads are practically independent of the working speed of the warp knitting machine.
  • the voltage is determined at a time when the guide needles have reached their point of reversal behind the knitting needles.
  • the maximum deflection of the guide needles is greatest. Accordingly, the tension of the threads is greatest here. It is sufficient to determine the tension here and to make it the basis of further action.
  • the voltage is adjusted by controlling a delivery drive.
  • the delivery drive actively drives a warp beam from which the threads of the warp are pulled.
  • the delivery drive is operated with a constant yarn shrinkage value.
  • the yarn infeed value is usually stated in "mm / R", ie millimeters per rack.
  • One of the tasks of incorporating a warp knitting machine with a new pattern is to determine an appropriate thread break value.
  • This yarn shrinkage value can be determined by presetting the voltage and operating the delivery drive in a closed loop in such a way that the voltage is reached but not exceeded. If the delivery drive gives off too much thread length per knitting operation, the tension is too low. If the delivery drive delivers too little thread length per stitching operation, the tension is too high. Accordingly, one can adjust the "delivery speed" in the delivery drive with a relatively simple control to the correct thread run-in value. It is not absolutely necessary here that the delivery drive already runs continuously at this stage of incorporation. It can also be operated intermittently, so deliver some thread for a short time and then stop again. This should be avoided only excessively large voltage spikes. Incidentally, during a stitch formation process, quite occasionally even a very slight or no tension can prevail in the threads. The delivery drive is operated in each case only in a positive drive direction, ie in a direction in which it emits threads.
  • a cloth take-off is switched on and, after switching on the fabric take-off, the regulation of the delivery drive continues for a predetermined time.
  • Turning on the fabric removal results in a change in the appearance of the knitwear. Without a product take-off, the individual courses are, so to speak, produced "on block". The stitches of the individual rows of stitches are practically adjacent to one another in the production direction of the knitted fabric. Turning on the fabric removal then results in a slightly different appearance. Depending on the speed with which the fabric take-off is operated, the result is a looser or firmer knitwear structure.
  • the control of the delivery drive then also has an influence on the structure of the knitted fabric, because if the delivery drive delivers a greater thread length per stitching process, then one can achieve a looser knit fabric than in the case of less thread length per stitching process. After switching on the fabric removal, the operator can then check whether the knitted fabric meets the requirements or wishes. If this is not the case, it can change the voltage specification.
  • a yarn inlet value of the delivery drive is displayed.
  • the yarn tension results in a yarn shrinkage value, for example mm / R, ie millimeters per rack.
  • the display can be done visually via a display. However, the display can also consist of printing out or otherwise storing the yarn infeed value. It is only important that the thread run-in value later, i. in a new production of the same pattern, is available and can be entered into the knitting machine.
  • the basic value is known for each machine and can be specified by the manufacturer. It results, for example, from measurements on the respective warp knitting machine, whereby fluctuations can also be taken into account here. For example, you can then specify a certain percentage of the basic value as voltage. So no specification of an absolute value is required.
  • the object is achieved in a warp knitting machine of the type mentioned above in that a yarn tension measuring device is connected to a control device which regulates the delivery drive in a learning phase.
  • the thread tension measuring device can be used to determine the thread tension of the threads of the chain and make this tension the basis of the setting of the thread running value of the delivery drive.
  • an overload of the active elements and the thread material is avoided on the one hand.
  • the operator has an easy way to change the look and feel of the resulting knitwear. He only has to change a setpoint with which the control device controls the delivery drive.
  • the thread tension measuring device is arranged on the thread balancing device.
  • the thread balancing arrangement is required in the production of a knitted fabric in a warp knitting machine, because there is a fluctuating thread consumption in a stitch formation process. The fluctuations within this thread consumption can be compensated via the thread balancing device. You can now use this thread balancing device in a simple way also to determine the thread tension. A "measurement" in the sense of a numerical result is often unnecessary.
  • the thread tensioning device can also be arranged on the attachment of the thread balancing device.
  • the yarn tension measuring device determines a total tension of a plurality of yarns. This results in a certain balance over the width of the warp knitting machine. The influence of a single thread and its tension is thus kept small, while the total tension of several or even all threads gives a meaningful size.
  • the yarn tension measuring device determines a tension on a crosshair.
  • the reticle is in the simplest case a spring-mounted rod, passed over the threads of the chain before they enter the thread guide opening of the guide needles.
  • the crosshair has its greatest deflection when the guide needles are in their reversal point behind the knitting needles. At this moment, the maximum thread tension can be determined.
  • the thread tension is in this case preferably determined on a fixed part, for example in a region between a spring arrangement, which carries the crosshairs, and the frame of the warp knitting machine.
  • the yarn tension measuring device is synchronized with the main shaft.
  • the yarn tension measuring device can then determine the corresponding voltage exactly at the moment indicated above, in which the guide needles have their greatest distance from the knitting needles.
  • a warp knitting machine 1 has guide needles 2, which are arranged on a guide bar, not shown. Furthermore, the warp knitting machine knitting needles 3, which are arranged on a knitting needle, not shown. In operation of the warp knitting machine, the guide needles 2 and the knitting needles 3 are moved relative to each other to form stitches of a knitted fabric.
  • the relative movement in this case has sections in which the guide needles 2 are moved through alleys between knitting needles 3, and Sections in which the guide needles are moved parallel to the longitudinal extent of the knitting needle bar.
  • the threads 4 are passed to a trained as a rod 6 reticle.
  • the rod is mounted on a spring arrangement 7.
  • the spring arrangement 7 allows a certain mobility of the rod 6, when the tension of the threads 4 changes. Such a voltage change occurs at least once per stitching cycle, as is apparent Fig. 2 can be seen.
  • Fig. 2 shows a first curve 8, which shows the tension of a single thread 4, and a second curve 9, which represents a corresponding voltage curve of the entire chain.
  • the voltage curve shown in the curve 9 can be determined from the movement of the rod 6.
  • a sensor 10 is arranged on the spring assembly 7, which determines the voltage of the spring assembly 7 and thus the force applied by the rod 6 on the spring assembly 7 force.
  • the sensor 10 may for example be formed by a strain gauge, which is arranged between a frame 18 of the warp knitting machine and a holder 19 of the spring arrangement 7 fastened to the frame 19. The sensor is thus located on a stationary part and it is located outside of an immediately thread-guiding element of the warp knitting machine.
  • the sensor 10 is connected to a control device 11.
  • the control device 11 is connected to a delivery drive 12 of the warp beam 5.
  • the warp knitting machine 1 has a main shaft 13.
  • the main shaft 13 is responsible for most movements of the knitting tools. In particular, it controls the movements of the guide needles 2 and the knitting needles 3. In simple terms, a rotation of the main shaft 13 causes a stitch forming operation in most cases, so that one course is produced per revolution of the main shaft 13.
  • a rotation angle sensor 14 detects the rotational position of the main shaft 13 and also reports it to the control device 11.
  • a fabric take-off with which the knitted fabric formed can be removed from the working area formed by the guide needles 2 and the knitting needles 3.
  • the threads 4 are drawn into the guide needles 2. This is usually done with a developed guide bar, in which the guide needles 2 are more accessible. After pulling in the threads, the guide bar is moved to its normal working position and mounted there. An operator then slowly sets the machine in motion and first checks whether the guide needles 2 can pass through lanes between the knitting needles 3 without colliding. If necessary. a correction is required.
  • the delivery drive 12 of the warp beam 5 is put into operation.
  • the warp beam 5 then provides the threads 4.
  • the stitches are then first formed on a block, i. they are close together. Thereafter, the product deduction, not shown, is put into operation and the production of the product can begin.
  • the value of the thread infeed is not available.
  • the thread entry is adjusted with experience and feeling of the operator.
  • the threads 4 can be damaged.
  • a voltage of the incoming filaments 4 is determined with the help of the sensor 10, a voltage of the incoming filaments 4 and reports this actual voltage to the controller 11 on.
  • the controller 11 compares the actual voltage with a predetermined target voltage and now controls the Delivery drive 12 so that this target voltage, which represents a predeterminable maximum value is not exceeded.
  • the delivery drive 12 is controlled so that it provides more threads 4, so a greater thread length per rack, then the voltage drops. If the delivery drive 12 is driven so that it delivers fewer threads, so a smaller thread length per rack, then the voltage increases.
  • Each warp knitting machine 1 usually has a basic value, which can be predetermined by the manufacturer, for example, or can be determined when the warp knitting machine is put into operation for the first time.
  • the operator can then via an input device 15, for example, a percentage of this basic value, that is, a fraction specify, to set the maximum voltage.
  • the operator can then visually or by feeling check whether this tension value has given the desired quality of knitwear. If this is not the case, the percentage value can be changed via the input device 15.
  • the value of the yarn inlet can be displayed via a display device 16.
  • the display device is shown schematically here. It is not necessary to use a display or a printer here. It is also possible to store the value of the thread entry only, so that the stored value is then available for later production operations.
  • the described process preferably takes place in crawl, so that the operator can continuously monitor at slow speed, whether the knitted fabric is actually produced with the desired appearance and the desired feel.
  • the crosshairs with the rod 6 and the spring device 7 forms a thread balancing device, which is required in operation to compensate for the fluctuating in a stitch forming process thread consumption. You can now also use them to determine the tension of the threads continuously.
  • the tension of the threads 4 varies considerably in a stitch formation process. This is because in a stitch forming process, the thread consumption also fluctuates.
  • the tension is greatest when the guide needles 2 are at a reversal point behind the knitting needles 3, on the side of the hook 17 of the knitting needles 3.
  • the guide needles 2 opposite the knitting needles 3 the largest deflection.
  • the rotation angle sensor 14 which detects the rotational angular position of the main shaft 3 it is now possible to detect this position of the guide needles 2, so that the Control device 11 detects the corresponding voltage value only at this time.
  • the control device 11 therefore forms, as it were, a snapshot of the voltage at a point in time at which the main shaft 13 is in a predetermined angular position, and only compares the voltage at this time with the predetermined or predeterminable maximum value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Warping, Beaming, Or Leasing (AREA)
EP17192021.8A 2017-09-20 2017-09-20 Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées Active EP3460113B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17192021.8A EP3460113B1 (fr) 2017-09-20 2017-09-20 Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées
TW107129333A TWI801408B (zh) 2017-09-20 2018-08-22 用來啟動經編機的方法以及經編機
KR1020180111477A KR102072812B1 (ko) 2017-09-20 2018-09-18 경편기의 시동 방법 및 경편기
CN201811101110.1A CN109518352B (zh) 2017-09-20 2018-09-20 用于对经编机进行准备的方法和经编机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17192021.8A EP3460113B1 (fr) 2017-09-20 2017-09-20 Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées

Publications (2)

Publication Number Publication Date
EP3460113A1 true EP3460113A1 (fr) 2019-03-27
EP3460113B1 EP3460113B1 (fr) 2021-05-05

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EP17192021.8A Active EP3460113B1 (fr) 2017-09-20 2017-09-20 Procédé de fonctionnement d'un métier à mailles jetées et métier à mailles jetées

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Country Link
EP (1) EP3460113B1 (fr)
KR (1) KR102072812B1 (fr)
CN (1) CN109518352B (fr)
TW (1) TWI801408B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116555974A (zh) * 2023-06-29 2023-08-08 张家港市金龙腾针织机械有限公司 一种电脑横机成圈的智能控制系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113430704A (zh) * 2021-06-07 2021-09-24 苏州奈米新纺织科技有限公司 一种3d经编织物节点无滑移缩圈方法
CN114808265B (zh) * 2022-05-24 2024-04-16 五洋纺机有限公司 一种防卡死的纱线张力调节装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD114290A1 (fr) * 1973-11-13 1975-07-20
DE9103530U1 (fr) * 1991-03-22 1991-06-27 Wirkbau Textilmaschinen Gmbh, O-9010 Chemnitz, De
EP0489307A1 (fr) * 1990-12-04 1992-06-10 INTERNATIONAL TRADING S.r.l. Méthode et dispositif pour contrôler automatiquement la quantité du fil fourni à une machine textile travaillant avec le dernier en fonction discontinue
DE69111928T2 (de) * 1990-07-10 1995-12-07 Btsr Int Spa Vorrichtung zum Steuern des Betriebes von Maschinen, insbesondere Textilmaschinen mit der Fähigkeit den Betriebszyklus dieser Maschinen selbst zu lernen und während dieser Selbstlernphase ihre eigenen Fehler zu verbessern.
DE19537325C1 (de) * 1995-10-06 1996-11-28 Memminger Iro Gmbh Fadenliefergerät mit elektronischer Ansteuerung
DE10234545A1 (de) * 2002-07-30 2004-02-19 Memminger-Iro Gmbh Verfahren und Vorrichtung zum Liefern von Fäden

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US1924649A (en) * 1929-06-06 1933-08-29 Morton James Warp knitting machine
GB8406570D0 (en) * 1984-03-13 1984-04-18 Guildford Kapwood Ltd Operating warp knitting machines
US5912816A (en) * 1995-03-23 1999-06-15 Milliken & Company Method and apparatus to align knitting needles and guides
EP1298239A1 (fr) * 2000-06-19 2003-04-02 Miquel Bartes Stadler Systeme permettant de reguler la tension de fils ou de tissus dans des machines textiles
KR200244346Y1 (ko) * 2001-05-24 2001-10-15 허위구 경편기용 경사 자동 공급장치
KR200266393Y1 (ko) * 2001-11-20 2002-02-28 박승헌 경편기의 경사공급 조절장치
DE102009020028B4 (de) * 2009-05-05 2017-02-16 Karl Mayer Textilmaschinenfabrik Gmbh Kettenwirkmaschine
CN203324843U (zh) * 2013-05-14 2013-12-04 常州市武进五洋纺织机械有限公司 纱线张力智能控制测控仪
CN203333957U (zh) * 2013-06-19 2013-12-11 苏州三立自动化设备有限公司 经编机送经装置
KR101601435B1 (ko) * 2014-06-20 2016-03-09 최종수 경편기

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD114290A1 (fr) * 1973-11-13 1975-07-20
DE69111928T2 (de) * 1990-07-10 1995-12-07 Btsr Int Spa Vorrichtung zum Steuern des Betriebes von Maschinen, insbesondere Textilmaschinen mit der Fähigkeit den Betriebszyklus dieser Maschinen selbst zu lernen und während dieser Selbstlernphase ihre eigenen Fehler zu verbessern.
EP0489307A1 (fr) * 1990-12-04 1992-06-10 INTERNATIONAL TRADING S.r.l. Méthode et dispositif pour contrôler automatiquement la quantité du fil fourni à une machine textile travaillant avec le dernier en fonction discontinue
DE9103530U1 (fr) * 1991-03-22 1991-06-27 Wirkbau Textilmaschinen Gmbh, O-9010 Chemnitz, De
DE19537325C1 (de) * 1995-10-06 1996-11-28 Memminger Iro Gmbh Fadenliefergerät mit elektronischer Ansteuerung
DE10234545A1 (de) * 2002-07-30 2004-02-19 Memminger-Iro Gmbh Verfahren und Vorrichtung zum Liefern von Fäden

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116555974A (zh) * 2023-06-29 2023-08-08 张家港市金龙腾针织机械有限公司 一种电脑横机成圈的智能控制系统
CN116555974B (zh) * 2023-06-29 2023-12-26 张家港市金龙腾针织机械有限公司 一种电脑横机成圈的智能控制系统

Also Published As

Publication number Publication date
CN109518352A (zh) 2019-03-26
EP3460113B1 (fr) 2021-05-05
TWI801408B (zh) 2023-05-11
KR20190033019A (ko) 2019-03-28
KR102072812B1 (ko) 2020-02-03
TW201915249A (zh) 2019-04-16
CN109518352B (zh) 2021-03-23

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