WO2007000173A1 - Metier a tricoter - Google Patents

Metier a tricoter Download PDF

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Publication number
WO2007000173A1
WO2007000173A1 PCT/EP2005/006914 EP2005006914W WO2007000173A1 WO 2007000173 A1 WO2007000173 A1 WO 2007000173A1 EP 2005006914 W EP2005006914 W EP 2005006914W WO 2007000173 A1 WO2007000173 A1 WO 2007000173A1
Authority
WO
WIPO (PCT)
Prior art keywords
warp beam
knitting machine
machine according
dancer
knitting
Prior art date
Application number
PCT/EP2005/006914
Other languages
German (de)
English (en)
Inventor
Michaela Lorenz
Joachim Kirchner
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 PCT/EP2005/006914 priority Critical patent/WO2007000173A1/fr
Priority to TW094127869A priority patent/TW200700601A/zh
Publication of WO2007000173A1 publication Critical patent/WO2007000173A1/fr

Links

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
    • D04B27/16—Warp beams; Bearings therefor
    • D04B27/20—Warp beam driving devices
    • D04B27/22—Warp beam driving devices electrically controlled
    • 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
    • D04B27/16—Warp beams; Bearings therefor

Definitions

  • the invention relates to a knitting machine having a knitting device, a thread supply having at least one warp beam, and a delivery device that feeds threads from the thread supply of the active device.
  • Such knitting machines are generally known in particular in a training as a warp knitting machine.
  • a multiplicity of threads are fed simultaneously to the active device, which forms stitches and thus connects the adjacent threads to one another.
  • the delivery device is provided.
  • the delivery device pulls the threads from the thread supply and leads them to the active device.
  • the thread supply is located above the active device, ie on a frame that bridges the knitting machine. This is a very space saving arrangement.
  • the free thread length is kept short, so that voltage fluctuations in the threads, which could lead to a non-uniform appearance of goods, can be largely avoided.
  • the threads are wound on so-called warp beams.
  • the warp beam can also be divided into several sub-warp beams. share, which are then arranged side by side in the width direction of the knitting machine.
  • the warp beam or the warp beams are braked during unwinding, so that the formation of thread loops, for example when stopping the machine, can be prevented.
  • the invention has for its object to increase productivity.
  • This object is achieved in a knitting machine of the type mentioned above in that the warp beam bearing a rotary drive with a control device that holds a yarn tension between the warp beam and the delivery device to a predetermined value has.
  • the delivery plant is then practically only responsible for supplying the threads with the correct amount per stitch or effective line of the active device.
  • the delivery mechanism no longer has to apply the force necessary to set the warp beam in rotation while overcoming the braking force with which the warp beam is currently being braked. Rather, the supplier only gives the need _ o_
  • the control device controls the speed of the warp beam within predetermined limits.
  • the yarn tension between the warp beam and the delivery can be kept evenly, so that the web receives a uniform appearance, which is not disturbed by differences in tension in the supplied threads.
  • the warp beam is mounted in a warp beam storage, which is arranged relative to the direction of gravity laterally next to the active device.
  • substantially larger warp beams ie warp beams with a larger diameter, on which a correspondingly larger thread length is wound accordingly.
  • “Kettbaum” it is always meant a training that has one or more Operakettbäume.
  • the controlled rotational drive is then of particular advantage.
  • Kettbaum can be stored. If you store the warp beam in front of or behind the machine, then you are not in the dimensions of the knitting machine in the -A -
  • Size of the warp beam limited. For example, you can arrange several warp beams side by side, so that the area covered by the warp base is much larger than the base, which was previously provided by the knitting machine available.
  • the larger warp beam is, as I said, able to accommodate a larger thread length. Accordingly, the knitting machine can produce longer and the ratio of set-up time to production time becomes cheaper. Also, it is easier in many cases to replace a warp beam, which is arranged next to the knitting machine. The responsible operator can then move on the floor. It is therefore not necessary that this operator climbs any scaffolding to properly position the warp beam during removal or installation. It is expedient to position the warp beam so that its axis points in a direction which is aligned parallel to the row of knitting needles in the active device.
  • the warp beam bearing has an axis of rotation, which is arranged in the direction of gravity in a height range in which an axis of rotation of a goods reel is arranged.
  • the two axes of rotation are arranged at the same height. But that does not mean a mathematically exact height. Small deviations of the order of a few 10 cm are quite permissible.
  • the rotary drive is designed to be self-locking. Such self-locking can be achieved for example by a combination of a motor with a worm gear.
  • Such self-locking can be achieved for example by a combination of a motor with a worm gear.
  • a drive of the motor through the warp beam is prevented. This ensures in a simple manner that the warp beam can not run. Rather, it can be forcibly controlled in all phases of operation.
  • the control device is connected to a dancer device.
  • the dancer device has a deflection element, for example a deflection roller, which forms a variable distance between the warp beam and the delivery device.
  • the dancer provides a buffer available in which a variable thread length can be accommodated.
  • the dancer can then indicate whether the warp beam must turn faster or slower. This signal can then be supplied to the control device, which adjusts the correct speed with the help of the dancer.
  • the dancer device is displaceable against the direction of gravity and has a weight support.
  • the thread tension then remains independent of the position of the dancer device, ie also of the possibly existing difference between the requested and delivered amount of thread, constant. If the dancer would work against the force of a spring, then the force would, among other things judge after extension of the spring.
  • the dancer must not be displaced exactly in the direction of gravity. It is sufficient if their movement has a noticeable component in the direction of gravity.
  • the dancer device generates a position-dependent signal.
  • This position-dependent signal is then supplied to the control device.
  • the control device then "knows" whether a larger or a smaller thread length must be replenished.
  • the control device can then drive the warp beam correspondingly faster or slower.
  • the dancer device generates a signal which changes continuously with the position.
  • a signal can be generated, for example with the aid of a potentiometer, the position-dependent outputs a signal from 0 to 10 V DC.
  • Such a signal is relatively easy to generate and process. In many cases, such a signal can be incorporated proportionally in a control loop.
  • other signals are possible, for example 4 to 20 mA DC, digital signals and the like.
  • the dancer device generates a signal which changes when at least one predetermined position is reached.
  • the signal can be generated for example by means of a light barrier.
  • the signal when the signal is generated, it is an indication that the warp beam is turning faster. hen must. If the signal is no longer generated in a movement of the dancer in the opposite direction, then this may be an indication that the warp beam can turn slower again.
  • the dancer device thus forms, as it were, a 2-point controller for the rotational drive of the warp beam.
  • control device is connected to the delivery device.
  • the delivery device indicates, so to speak, at what speed the threads must be removed from the warp beam. This speed can then be set by the control.
  • FIG. 4 shows a first embodiment of a dancer device
  • a knitting machine 1 has an active device 2, shown only schematically, in which knitting needles, guide needles and other knitting elements, for example pile boards, debarking boards and the like, act together to produce a textile material web 3 by stitching.
  • the web 3 is wound in a roll 4 to a winding roll 5.
  • the operating device 2 is supplied with a plurality of yarn sheets 6-8. Shown are three sets of threads 6-8. In principle, however, it may also be more or less, for example, a number of 1 to 12 thread groups.
  • Each group of threads comes from a thread supply 9-11.
  • a warp beam 12-14 is rotatably supported in a Kettbaumlagerung 15-17.
  • the Kettbaumlagerache 15-17 are on the same floor 18, as the machine frame 19 of the device 2 also.
  • Each yarn sheet 6-8 is fed to the active device 2 via a delivery device 20-22.
  • Each delivery device 20-22 has, in a manner known per se, a roller over whose circumference the yarn sheet 6-8 is guided. Means not shown are provided to establish a frictional relationship between the yarn sheet 6-8 and the corresponding roller, so that the rotational speed of the roller of the delivery devices 20-22 determine the speed at which the yarn sheets 6-8 of the respective warp beams 12th -14 must be provided.
  • Figs. 2 and 3 now show the thread supply 9 with further details.
  • an electric motor 23 is mounted, which acts via a gear, such as a worm gear 24 on a shaft 25 of the warp beam 12.
  • the warp beam 12 is therefore rotated only under the action of the motor 23. If the motor 23 does not rotate, the warp beam 12 can also not be rotated because the drive formed by the motor 23 and the worm gear 24 is self-locking.
  • the motor 23 is powerful enough to also rotate a warp beam 12 having a larger diameter of, for example, 50 or 60 inches (127 or 152 cm).
  • Such a "mammoth warp beam” has a relatively high inertia, so that it is relatively difficult to rotate it only by a train in the yarn sheet 6 or to accelerate and decelerate. The necessary drive force can be greater than the tensile strength of the threads.
  • the yarn sheet 6 is guided over a first deflection roller 26, which is arranged stationary on the warp beam bearing 15, and then wraps around a dancer roll 27 which is displaceable in a longitudinal guide 28 of the warp beam bearing 15 in the direction of gravity upwards and downwards.
  • a dancer roll 27 also achessaufläge (not shown in detail) may be provided.
  • the weight of the dancer roller 27 and optionally the weight supports then determines the tension in the yarn sheet 6 between the warp beam 12 and the delivery device 20-22.
  • the dancer roller 27 serves, as shown schematically in FIG. 4, simultaneously as a sensor.
  • the dancer roller 27 is connected to an actuator 29 which shifts a tap 30 of a potentiometer 31.
  • a voltage difference between a terminal of the potentiometer and the tap 30 then gives information about the position of the dancer roller 27. If, for example, a voltage of 10 V DC is applied via the potentiometer 31, then each voltage gives in the range of 0 to 10 V relative exactly the position of the dancer roll 27 at. As mentioned above, one can of course also use a different signal instead of such a voltage.
  • This position information is now used to control the motor 23 which rotatably drives the warp beam 12.
  • the regulation is carried out by two measures: First, by the delivery device 20 (the same applies, of course, for the other delivery devices 21, 22) a certain thread consumption is specified. Based on this yarn consumption, the motor 23 can set a predetermined first speed of the warp beam 12 and thus a peripheral speed corresponding to the take-off speed of the yarn sheet 6. The speed will in most cases not exactly match the need of the delivery mechanism 20. If the thread consumption by the delivery mechanism 20 is too large, then the dancer roller 27 will rise in the longitudinal guide 28 upwards, which can be detected immediately based on the signal from the potentiometer 31. This signal is then used to drive the motor 23 with a higher To drive speed.
  • the dancer roll 27 decreases and the potentiometer 31 provides a corresponding signal, so that the speed of the motor 23 can be reduced.
  • This continuous control by means of the dancer roll 27 allows, without knowledge of the tree data (outer diameter, inner diameter, layer number) always to drive the desired take-off speed of the yarn sheet 6, the motor 23 is responsible for ensuring that the warp beam 12, the necessary thread length per stitch or Action line delivers. The actual yarn consumption is then adjusted by the delivery device 20.
  • a signal about the position of the dancer roller 27 can be obtained continuously.
  • Fig. 5 shows a modified embodiment, in which two light barriers 32, 33 are provided.
  • the light barrier 32 has a transmitter 34, for example an LED (light-emitting diode), and a light receiver 35. Both the transmitter 34 and the light receiver 35 can operate in the non-visible area, if necessary.
  • the light barrier 33 also has a light transmitter 36 and a light receiver 37. If now the dancer roll 27 comes into the area of the upper light barrier 32, then the drive "knows" that the motor 23 is running too slowly and the warp beam 12 accordingly supplies too little thread length per time. He will accordingly increase the speed of the motor 23.
  • the working width of the active device 2 exceeds the axial length of a warp beam 12, then one can also use several sub-warp beams, which are arranged one behind the other in the axial direction. These can be controlled jointly or individually.
  • the motors 23 of the Kettbaumlagerache 15-17 and the corresponding drives of the active device 2 can be matched.
  • the motors 23 can be raised slowly during commissioning of the operating device 2, so that jerky loading of the yarn sheets 6-8 can be reliably avoided.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

Métier à tricoter (1) qui comporte un dispositif à tricoter (2), une réserve de fil (9-11) possédant au moins une ensouple (12-14) et un dispositif délivreur (20-22) qui guide les fils (6-8) à partir de la réserve de fil (9-11) du dispositif à tricoter (2). L'objet de la présente invention est l'augmentation de la productivité dudit métier à tricoter. A cet effet, le support (15-17) de l'ensouple comporte un dispositif d'entraînement à la rotation (23, 24) pourvu d'un dispositif de réglage qui maintient à une valeur prédéterminée la tension du fil entre l'ensouple (12-14) et le dispositif délivreur (20-22).
PCT/EP2005/006914 2005-06-28 2005-06-28 Metier a tricoter WO2007000173A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2005/006914 WO2007000173A1 (fr) 2005-06-28 2005-06-28 Metier a tricoter
TW094127869A TW200700601A (en) 2005-06-28 2005-08-16 Wirkmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/006914 WO2007000173A1 (fr) 2005-06-28 2005-06-28 Metier a tricoter

Publications (1)

Publication Number Publication Date
WO2007000173A1 true WO2007000173A1 (fr) 2007-01-04

Family

ID=36366476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/006914 WO2007000173A1 (fr) 2005-06-28 2005-06-28 Metier a tricoter

Country Status (2)

Country Link
TW (1) TW200700601A (fr)
WO (1) WO2007000173A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017137691A1 (fr) 2016-02-10 2017-08-17 Cepovett Installation et procédé de tricotage pour produire un article tricoté et article tricoté produit selon un tel procédé de tricotage
CN107059237A (zh) * 2017-04-25 2017-08-18 东华大学 一种单针床经编机的对称送经方法及装置
CN108589017A (zh) * 2018-04-27 2018-09-28 江南大学 一种单针床扁丝经编机供纱系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105839287A (zh) * 2016-06-13 2016-08-10 海宁科源经编有限公司 一种扩展型宽幅高速经编机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307152A1 (de) * 1972-02-14 1973-08-23 Platt International Ltd Kettenwirkmaschine
DE3935205A1 (de) * 1988-12-07 1990-06-13 Textima Veb K Fadenliefervorrichtung fuer kettenwirkmaschinen
DE4439907A1 (de) * 1994-11-08 1996-05-09 Liba Maschf Kettenwirkmaschine mit einem Fadenspeicher in der Wirkfadenzuführung
DE29816067U1 (de) * 1998-09-07 1998-12-17 Liba Maschf Kettenwirkautomat mit einer Warenaufrollung an der Maschinenseite gegenüber der Bedienseite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307152A1 (de) * 1972-02-14 1973-08-23 Platt International Ltd Kettenwirkmaschine
DE3935205A1 (de) * 1988-12-07 1990-06-13 Textima Veb K Fadenliefervorrichtung fuer kettenwirkmaschinen
DE4439907A1 (de) * 1994-11-08 1996-05-09 Liba Maschf Kettenwirkmaschine mit einem Fadenspeicher in der Wirkfadenzuführung
DE29816067U1 (de) * 1998-09-07 1998-12-17 Liba Maschf Kettenwirkautomat mit einer Warenaufrollung an der Maschinenseite gegenüber der Bedienseite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017137691A1 (fr) 2016-02-10 2017-08-17 Cepovett Installation et procédé de tricotage pour produire un article tricoté et article tricoté produit selon un tel procédé de tricotage
CN107059237A (zh) * 2017-04-25 2017-08-18 东华大学 一种单针床经编机的对称送经方法及装置
CN108589017A (zh) * 2018-04-27 2018-09-28 江南大学 一种单针床扁丝经编机供纱系统

Also Published As

Publication number Publication date
TW200700601A (en) 2007-01-01

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