EP3497274B1 - Fadenzuführungsvorrichtung mit langgarnpuffer - Google Patents

Fadenzuführungsvorrichtung mit langgarnpuffer Download PDF

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Publication number
EP3497274B1
EP3497274B1 EP17839920.0A EP17839920A EP3497274B1 EP 3497274 B1 EP3497274 B1 EP 3497274B1 EP 17839920 A EP17839920 A EP 17839920A EP 3497274 B1 EP3497274 B1 EP 3497274B1
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EP
European Patent Office
Prior art keywords
yarn
moveable
carrier
feeding device
loop
Prior art date
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Application number
EP17839920.0A
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English (en)
French (fr)
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EP3497274A4 (de
EP3497274A1 (de
Inventor
Pär JOSEFSSON
Birger Johansson
William SHAFIEI
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Vandewiele Sweden AB
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Vandewiele Sweden AB
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Publication of EP3497274A4 publication Critical patent/EP3497274A4/de
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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
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/369—Communication systems
    • 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 disclosure relates to a yarn feeding arrangement.
  • the present disclosure relates to a yarn feeding arrangement suitable for a textile machine operated at high speed and potentially also with yarns with relative high weight per length unit.
  • Yarn pre-winders are used to eliminate yarn tension variations to ensure high textile quality and productivity of a textile machine, e.g. a shuttleless weaving machine or a knitting machine.
  • a general development trend in weaving is that the speed of the weaving machine is constantly being increased. At the same time the weavers strive to weave coarser yarns and also weaker yarns. A similar trend also exists for other textile machines. Coarser yarns and higher speeds lead to increased tension of the yarn. Using conventional yarn pre-winders, increased speeds as well as coarser yarns result in a bigger take off yarn balloon in the yarn pre-winder, which needs to be reduced using a high braking force but thereby unfortunately leading to an undesirably high output yarn tension.
  • the balloon braking element in a conventional yarn pre-winder is typically either a brush ring or a flexible truncated-cone formed brake element.
  • a brush ring is often worn out in as little as a day and a flexible truncated-cone brake element can be worn out in a few months.
  • Another example is weaving technical fabric with coarse synthetic yarns; where one faces the same problem as in a carpet weaving machine.
  • the insertion means in the rapier weaving machine consists of one or two rigid or flexible rapiers that mechanically transfers the yarn from one end of the shed of the machine to the other.
  • the most common system is two rapiers which meet in the middle of the shed where the yarn tip is transferred from the first, giving, rapier to the second, receiving, rapier.
  • the first rapier is first accelerating from zero to full speed and then decelerating to zero again at the tip transfer point. This type of motion is analogous for the second rapier. This leads to a yarn tension that goes from low to high and then back to low again.
  • GB 1355687 describes a yarn feeder where a member directly connected to the weaving machine moves back and forth to remove yarn in unison with the movement of the rapier from a yarn package during both a forward and return movement of the rapier. Hereby, the speed at which the yarn is drawn from the yarn package can be reduced to one half.
  • the arrangement in GB 1355687 will form a yarn buffer.
  • a yarn buffer is an arrangement that can hold a bit of yarn that can be drawn with a small force during at least a part of the weaving cycle compared to the force required if the yarn would have been drawn directly from the yarn storage.
  • the yarn storage is formed by a container and has an endless belt for advancing the yarn in the container.
  • the yarn storage is used to rid strip shaped materials from electrostatically charged materials.
  • FR 2 558 854 which is regarded as the closest prior art, describes another yarn feeder which lays the yarn in a zigzag pattern.
  • the device described in GB 1355687 allows for a reduced speed at which the yarn is drawn from the yarn feeder, it has limitations and drawbacks.
  • the speed reduction can only be 50% and not more.
  • the fact that the member is directly connected to the weaving machine and moves back and forth to remove yarn in unison with the movement of the rapier from a yarn package during both a forward and return movement of the rapier makes it impossible to draw yarn from the yarn storage when the rapier is not moving such as during beat up.
  • the device moves in unison with the rapier. This results in that the speed at which the yarn is drawn from the yarn feeder is directly proportional to the speed of the rapier and hence varies significantly during a cycle of a rapier machine.
  • the fact that the device moves in unison with the rapiers as it is mechanically coupled to the rapiers in the weaving machine limits the functionality as it is not possible to improve the function by following other movements in the weaving machine in order to even out the speed even more and/or compensate for other movements in the weaving machine.
  • the device requires a traveler guided along a rail, which imposes additional friction forces and a moving part, which could be a disadvantage in some applications.
  • the yarn is drawn from a cylindrical drum.
  • the yarn will form a take-off balloon, which increases the yarn tension significantly.
  • this ballooning effect will be accentuated and the yarn tension thereby raises even more.
  • the here described yarn feeding device does not store the yarn on a cylindrical drum but instead stores the yarn lying freely in a meandering pattern. Since the yarn is not drawn from a drum but instead from yarn lying flat, the yarn take-off balloon from traditional pre-winders will not be formed. The result is a much lower yarn take-off tension and that the speed of the textile machine can be increased to ultimately increase the productivity of the textile machine.
  • a yarn feeding device for feeding yarn to a textile machine.
  • the yarn feeding device comprises a moveable yarn carrier adapted to transport yarn in a first, forward direction and a loop former adapted to draw yarn from a yarn storage.
  • the yarn feeding device further comprises moveable loop keeping members arranged at both sides of an input section of the moveable yarn carrier, wherein the loop former is adapted to position yarn on the moving loop keeping members by moving the yarn from side to side.
  • the movement can comprise a movement being predominantly perpendicular to the first direction.
  • the moveable loop keeping members are adapted to hold the yarn positioned thereon and to release the yarn onto the moveable yarn carrier in a meandering pattern at an input area of the moveable yarn carrier and the yarn lying on the moveable yarn carrier is adapted to leave the moveable yarn carrier at an output section of the moveable yarn carrier.
  • a yarn buffer is formed that can draw yarn from a yarn storage at a low speed and which can keep a large yarn buffer that can supply yarn to a textile machine with low or in some instances practically no yarn tension compared to taking yarn directly from the yarn storage.
  • the moveable loop keeping members are pins.
  • the pins can be cylindrical or in one embodiment semi-cylindrical. Hereby a yarn can easily be placed on and leave the moveable loop keeping members.
  • the moveable loop keeping members are located laterally outside the moving carrier. In an alternative embodiment, the moveable loop keeping members are located projecting through the moveable yarn carrier.
  • At least one sensor is provided to detect the yarn on the moveable yarn carrier. For example, the position of the yarn can be determined.
  • input to a control mechanism can be provided.
  • a controller adapted to control the drive of the yarn feeding device in response to one or more pre-determined parameters.
  • the pre-determined parameters include one or many of sensor signals and input from the weaving machine.
  • At least one endless belt distanced from the moveable yarn carrier and moving in parallel with the moveable carrier is provided.
  • a first yarn movement restriction means can be provided on such a belt moving in parallel with the moveable carrier.
  • the moveable yarn carrier is an endless belt.
  • an efficient carrier can be obtained that is easy to control.
  • an outlet yarn guide is provided at an end section of the moveable yarn carrier, the yarn guide being located at a flat section of the moveable yarn carrier.
  • a second yarn movement restriction means are provided and adapted to prevent yarn from leaving the moveable yarn carrier in an uncontrolled way.
  • the movement restriction means can advantageously be located at an end section of the moveable carrier.
  • a spring biased element can be provided to press yarn against the loop keeping member from the outside of the loop keeping member.
  • the yarn can be kept in place while being moved by the loop keeping members.
  • a slip feed device can be located before the yarn feeding device.
  • the invention also extends to methods for controlling a yarn feeding arrangement in accordance with the above and to a controller and computer program product for controlling the yarn feeding device in accordance with the above.
  • the buffer of yarn can for example be formed by a number of consecutive loops forming a meandering piece of yarn that can be used during insertion in to the weaving machine.
  • Fig. 1 an exemplary yarn feeding device 16 for providing a yarn buffer is shown.
  • the yarn feeding device 16 draws yarn 40 from a yarn storage, here represented by a pre-winder 14. Yarn can also be drawn directly from a bobbin (not shown).
  • the yarn from the yarn feeding device 16 is supplied to a weaving machine 10, here represented by a rapier weaving machine.
  • the yarn feeding device can be adapted to feed any type of weaving machine such as an air-jet weaving machine, a water jet weaving machine or a projectile weaving machine, as well as any other suitable type of textile machine.
  • the yarn can thus be taken either directly from a bobbin, or from a conventional pre-winder by the yarn feeding device 16.
  • a loop former 18 of the yarn feeding device 16 winds the yarn onto moving loop keeping members 20, e.g. pins provided on the yarn feeding device.
  • the loop former 18 can be of any suitable design.
  • the loop former 18 will move the yarn from side to side and provide the yarn to the loop keeping members 20.
  • the movement of the loop former 18 can be in a direction essentially perpendicular or at least predominantly perpendicular to the movement of the loop keeping members 20.
  • the movement of the loop former 18 can however in some embodiments deviate from a side to side movement only to better position the yarn on to the loop keeping members.
  • the drive of the yarn feeding device 16 including the drive of the loop former 18 of the yarn feeding device 16 can in accordance with some embodiments be controlled by a controller 19.
  • the controller 19 can in accordance with some embodiments receive input signals from different sensors generally represented by a sensor 17 in Fig 1 , and also from the weaving machine 10. This will be described in more detail below.
  • Fig. 2 some parts of the yarn feeding device 16 are shown in more detail.
  • the moving loop keeping members 20 are shown mounted on a roller 22.
  • the moving loop keeping members 20 are moved forward at the same speed as a yarn carrier 24 on which the yarn leaving the moving loop keeping members is laid out.
  • the carrier 24 can be implemented in different ways.
  • he carrier can be one or several endless belts, caterpillar tracks or similar.
  • the carrier 24 is also referred to as yarn carrier or movable yarn carrier herein.
  • one endless belt is used as a yarn carrier 24 and is driven by the roller 22, which means that the yarn carrier 24 in this case is driven in synchronism with the loop keeping members 20.
  • the roller is in turn driven by a motor 21.
  • the motor 21 can in particular be a controlled motor.
  • the moving loop keeping members 20 are located and driven in a manner to be accessible for the yarn to be wound by the loop former 18 onto the moving loop keeping members 20.
  • the loop former can be driven by a separate motor 23.
  • the motor 23 can be a controlled motor.
  • the yarn is subsequently released or disengaged from the loop keeping members 20 at a later stage for example by the moving loop keeping members following the roller to get underneath the yarn carrier 24.
  • the moving loop keeping members When the moving loop keeping members are moved under the carrier the yarn will be pushed off the moving loop keeping member and lie free on the carrier.
  • the loops are transported forward in a downstream direction as the carrier 24, in this exemplary embodiment a belt, is driven forward, thus making space for new loops upstream. Downstream the loops are consumed by the weaving machine.
  • Different yarns will behave in different ways once placed on the carrier 24 as the yarn is released from the moving loop keeping members. Some yarns will stay on the carrier in the same or essentially the same position as the yarn is placed on the carrier. Other yarns have a tendency to twist or move and cause snarls or entanglement when released from the moving loop keeping members. In order to prevent that the yarn moves in an undesired manner, the yarn can be held in position on the carrier by a position keeping means.
  • Fig. 3 an exemplary embodiment where the position keeping means is formed by a belt or multiple belts.
  • the carrier 24 is a belt (a first, lower, belt)
  • a second, upper, belt 26, moving mainly synchronously with the first belt 24, can be provided.
  • the second belt 26 can be arranged as two parallel belts as shown in Fig. 3 .
  • the second belt 26 is located above the first belt slightly distanced from the first belt to make place for the yarn to be placed in-between the first and second belts. If the distance between the first and second belts is small enough the yarn has no space to twist or otherwise make undesired movements. Hence, the distance is preferably smaller than the natural bending radius of a twisting yarn. However, the distance must be big enough to fit the yarn at the thickest portion of the yarn, including knots and splices. In accordance with some preferred embodiments, but not limited to, the distance can be set to be between 1 and 6 mm.
  • the moving loop keeping members 20 are pins. Such an embodiment is shown in Fig. 3 .
  • the pins 20 can be placed outside the belt or belts 24, 26.
  • the yarn will after release from the pins 20 lie smoothly on the belt 24.
  • the yarn will be stretched between the pins.
  • the yarn 40 is no longer stretched between the pins 20 and will form loops lying on the belt 24 in a meandering shape.
  • the moving loop keeping members such as pins 20 can instead of being placed outside the belt as an alternative be placed in the belt or caterpillar track or a similar carrier.
  • a slot 28 (in fig 5 ) big enough to allow the pin to project through the belt 24 without contacting the belt can be provided.
  • Fig. 5 a view illustrating a belt where the pins 20 are located in the belt is shown.
  • the belt is provided with slots 28 to allow the yarn to disengage from the pins.
  • Fig. 5 further also illustrates the limitation with regard to possible pin length / pitch.
  • movement restriction means such as brushes and clamps can be used.
  • Such movement restriction means can be fixed to the upper belt if one is provided, or to any other similar arrangement provided to move at the same speed as the carrier that transports the yarn of the yarn buffer.
  • a movement restriction means 29 is shown.
  • the yarn is pressed between the movement restriction means and the carrier.
  • An arrangement with movement restriction means can also serve to brake the front part of the yarn loops at the deceleration of a rapier movement in the weaving machine, or at the end of weft insertion of an air-jet or waterjet weaving machine.
  • the properties of the movement restriction means can in accordance with some embodiments be adapted to a specific weaving application.
  • the stiffness and/or pressure of the movement restriction means can be selected to be comparatively high, and if a thin yarn is used the stiffness and/or pressure of the movement restriction means can be selected to be comparatively low.
  • the movement restriction means can be of various sizes. For a yarn with a high requirement with regard to controlling the yarn, the movement restriction means can be long, extending from one side of the carrier to the other, or be continuous following the carrier in the moving direction. For other yarns, small movement restriction means placed with distance from each other can be enough to obtain sufficient control of the yarn on the carrier. As the provision of movement restriction means will increase the yarn take-off tension from the yarn feeding device, it is typically preferred to provide as few movement restriction means as possible with as little force against the yarn as possible while obtaining the desired control of the yarn.
  • the yarn feeding device 16 is controlled to be driven in synchronization with the weaving machine to which it supplies yarn.
  • the yarn buffer formed by the yarn feeding device is controlled to always have a buffer of yarn that can be inserted into the weaving machine. In other words, there will always be some amount of yarn placed on the carrier during operation of the yarn feeding device when feeding a weaving machine.
  • the length of yarn stored on the carrier can be adapted to the speed, the weft pattern and the width of the weaving machine.
  • the width of the loops in the meandering yarn on the carrier, the pitch between each loop and the number of loops possible to store on the carrier determines the length of yarn possible to store in the yarn feeding device.
  • the loop former can be set to wind yarn onto the moving loop keeping members at a speed synchronized with the drive speed of the carrier such that the yarn on the carrier is moved forward at the speed at which yarn is wound onto the moving loop keeping members.
  • the speed at which the yarn is wound onto the moving loop keeping members can be determined in several ways.
  • a stand-alone solution is to have one or more sensors detecting the yarn, in particular the yarn front, on the belt.
  • the sensor(s) can for example detect the position of the yarn buffer front edge, the amount of yarn taken off from the yarn feeding device or similar information.
  • yarn can be wound onto the moving loop keeping member at the same average speed as the yarn leaves the yarn feeding device.
  • communication with the weaving machine can be used. Data is fed from the weaving machine.
  • the data can comprise one or more of weaving machine width (pick length), speed (rpm), start & stop of the weaving machine, weft pattern in advance etc.
  • the speed at which the yarn is wound onto the moving loop keeping members is then determined based on data received from the weaving machine.
  • the yarn wind on speed control is based on information from both one or more yarn sensors and data received from the weaving machine.
  • the sensor(s) used in the yarn feeding device can be of several types, e.g. optical, mechanical or capacitive.
  • the sensor(s) can be of point type or an array.
  • a camera can be used as a sensor.
  • the upper belt can be made as two or more separate belts running side by side at the same speed.
  • the sensor(s) can then be placed in a gap formed between the multiple upper belts.
  • the belts can be more or less perforated, even a mesh structure is envisaged.
  • the sensors can be adapted to register the yarn from both sides.
  • the lower belt could potentially be a problem for some sensor types. If for example an optical sensor is used, it may be difficult for the sensor to see the difference between a yarn and the belt.
  • two or more belts are provided as lower belts and a sensor is located in a gap between the belts. Hereby the quality of the sensor output signal can be improved.
  • the drive of the yarn feeding device 16 including the loop former 18 can be made by one or more electrical motors.
  • the motors can be individually controlled. If one motor is used, the different drives for the moving parts such as a belt or belts and the loop former can be made via mechanical connections. If separate motors are used, they are advantageously controlled to be driven in synchronization with each other.
  • the yarn feeding device 16 can be run in single color, weft mix or in free pattern. If a low yarn tension is desired at a location upstream the yarn feeding device, it can be advantageous to run weft mix of two or more channels so the time to fill the loop buffer is longer, thereby lowering the yarn speed and tension in to the yarn feeding device.
  • the belt can continue to feed the yarn out from the carrier unless this is prevented.
  • One way to prevent this from happening is to provide an outlet eyelet 34, stationary or movable, before the carrier ends. By doing this the front yarn will be prevented from leaving the carrier and hold back the following loops. For example, when a weft insertion is finished, the yarn buffer is continuously filled up and moved forward by the carrier 24. The moving carrier will then transport not only the yarn loops in the buffer but also the yarn that is between the front loops of the buffer and the weaving machine.
  • a second yarn movement restriction means can be used.
  • Such a second yarn movement restriction means 32 is shown in Figs. 6a and 6b , where the movement restriction means are exemplified by a brush.
  • Other devices that prevents the yarn from unintentionally leaving the carrier can be used such as a clip or similar.
  • an output guide/eyelet 34 via which the yarn leaves the yarn feeding device 16 to be inserted in to the weaving machine.
  • brake members e.g. brushes might be placed at the sides of the lower belt to prevent the sides of the loops to be pushed off the belt.
  • At least one active member to replace (reshape) some part of the yarn.
  • Such actions to control the yarn located on the carrier can, but need not, be done controlled by input signals from one or more sensors provided.
  • a slip feed device can be placed before the yarn feeding device.
  • the slip feed device is a driven roller that rotates with a peripheral speed that is higher than the necessary yarn speed.
  • a driven roller that rotates with a peripheral speed that is higher than the necessary yarn speed.
  • the yarn feeding device pulls the yarn during the loop formation, the yarn will be pulled against the roller and the friction between the yarn and the rotating roller will contribute to pull the yarn further thus decreasing the yarn tension.
  • the force from the yarn against the roller will decrease and hence the pulling force will also decrease until a balance is reached and the roller will not give any further force to the yarn.
  • Fig. 7 depicts an exemplary slip feed device 38 in two different views.
  • a slip feed device in the yarn feeding device as described herein can lower the yarn tension substantially.
  • Fig. 8 a set-up with a slip feed device 38 before the yarn feeding device 16 is depicted.
  • a flow chart illustrating some steps when controlling a yarn feeding device (16) feeding yarn (40) to a weaving machine (10) is shown.
  • yarn is drawn from a yarn storage using a loop former.
  • the yarn can be drawn from a pre-winder or directly from a bobbin or via a slip feed device.
  • yarn is placed in a meandering pattern on a moveable carrier by positioning the yarn on to moving loop keeping members using the loop former.
  • the loop former positions the yarn on the moving loop keeping members by moving the yarn from side to side in a direction perpendicular to a first direction.
  • the moveable carrier and the moving loop keeping members can be designed as described above.
  • the yarn is then in a step 505 transported in the first, forward, direction using the moveable carrier.
  • the yarn lying on the moveable carrier then leaves the moveable carrier at an end section of the moveable carrier in a step 507 to be inserted into the weaving machine.
  • a controller 19 for controlling a yarn feeding device 16 is depicted.
  • the controller 19 can comprise an input/output 81 for receiving input signals for parameters used for controlling the yarn feeding device as set out above.
  • the input signals can be various sensor signals from sensors of the yarn feeding device.
  • sensor signals can be provided from any type of sensor, e.g. optical sensors, mechanical sensors or capacitive sensors.
  • the sensors can be of point type or an array of sensors.
  • a camera can be provided to feed input signals to the controller.
  • signals from the weaving machine can be input to the controller 19 and used to control the yarn feeding device.
  • input data from the weaving machine can comprise one or more of weaving pick length, speed (rpm), start & stop of the weaving machine, pattern in advance and similar input data.
  • the input/output 81 outputs motor control signal(s) to controlled motors of the yarn feeding device.
  • the controller 19 further comprises a micro-processor that also can be referred to as a processing unit 82.
  • the processing unit 82 is connected to and can execute computer program instructions stored in a memory 83.
  • the memory 83 can also store data that can be accessed by the processing unit 82.
  • the data in the memory can comprise pre-stored data relating to the weaving machine 10.
  • the computer program instructions can be adapted to cause the controller to control the yarn feeding device comprising a motor in accordance with the teachings herein.
  • the controller can be located at any suitable location.
  • the controller 19 can be integrated in a motor of the yarn feeding device.
  • the controller 19 can input output data using any suitable means. Both wireless and wireline communication devices can be used.
  • the moving carrier has been illustrated to be moving yarn horizontally. It is also possible to move the yarn vertically by providing restrictions means to keep the yarn in position during transport on the carrier.
  • the loop keeping members 20 are shown as generally cylindrically shaped pins. However, other loop keeping members are also envisaged such as hooks or other elements suitable for engaging the yarn and bring it forward.
  • Figs 11a and 11b an embodiment where the loop keeping members 20 are formed as semi-cylindrical pins is shown. Using semi-cylindrical pins, it is possible to increase the radius of the pins without adding to the space required.
  • a spring biased element 65 can be provided to press the yarn against the loop keeping member from outside the loop keeping member to keep the yarn better in place once placed on the yarn keeping member until the yarn is released from the loop keeping member.
  • the spring biased element 65 can for example be a thin, resilient, metal plate or a similar element.
  • the yarn tension in to a textile machine can be made very low.
  • the ballooning problem that occurs using a conventional pre-winder is strongly decreased.
  • the maximum take-off speed from a yarn storage can be significantly decreased.
  • Multiple yarn feeding devices can be used when running a weaving machine in weft mix whereby the yarn speed from the yarn storage can be further reduced.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (14)

  1. Fadenzuführungsvorrichtung (16) zum Zuführen von Faden (40) zu einer Textilmaschine (10), wobei die Fadenzuführungsvorrichtung Folgendes umfasst:
    - einen beweglichen Fadenträger (24), der angepasst ist, um Faden in eine erste Vorwärtsrichtung zu befördern,
    - einen Schligenbilder (18), der angepasst ist, um Faden aus einem Fadenspeicher (14) zu ziehen,
    - bewegliche Schlingenhalteelemente (20), die an gegenüberliegenden seitlichen Seiten eines Eingabebereichs des beweglichen Fadenträgers angeordnet sind,
    wobei der Schligenbilder angepasst ist, um Faden durch Bewegen des Fadens von Seite zu Seite auf den sich bewegenden Schlingenhalteelementen zu positionieren,
    wobei die beweglichen Schlingenhalteelemente angepasst sind, um Faden darauf positioniert zu halten, und um Faden in einem meanderförmigen Muster in dem Eingabebereich des beweglichen Fadenträgers auf den beweglichen Fadenträger freizugeben;
    wobei der bewegliche Fadenträger einen Ausgabebereich umfasst, wobei Faden, der auf dem beweglichen Träger liegt, angepasst ist, um von dem Ausgabebereich den beweglichen Fadenträger zu verlassen;
    dadurch gekennzeichnet, dass sie weiter mindestens einen Endlosriemen (26) umfasst, der von dem beweglichen Träger beabstandet ist und sich parallel zu dem beweglichen Fadenträger bewegt.
  2. Fadenzuführungsvorrichtung nach Anspruch 1, wobei der Schligenbilder angepasst ist, um Faden unter Verwendung einer Bewegung, die vorherrschend rechtwinkelig zu der ersten Richtung ist, auf den beweglichen Schlingenhalteelementen zu positionieren.
  3. Fadenzuführungsvorrichtung nach Anspruch 1 oder 2, wobei die beweglichen Schlingenhalteelemente Stifte (20) sind.
  4. Fadenzuführungsvorrichtung nach einem der Ansprüche 1- 3, weiter umfassend ein federbelastetes Element (65), das bereitgestellt ist, um Faden von der Außenseite des beweglichen Schlingenhalteelements gegen das bewegliche Schlingenhalteelement zu drücken.
  5. Fadenzuführungsvorrichtung nach einem der Ansprüche 1-4, wobei mindestens ein Sensor (17) bereitgestellt ist, um Faden auf dem beweglichen Fadenträger zu erkennen.
  6. Fadenzuführungsvorrichtung nach einem der Ansprüche 1-5, weiter umfassend eine Steuerung (19), die angepasst ist, um als Antwort auf einen oder mehrere vorbestimmte Parameter den Antrieb der Fadenzuführungsvorrichtung zu steuern.
  7. Fadenzuführungsvorrichtung nach Anspruch 6, wobei die vorbestimmten Parameter Sensorsignale umfassen.
  8. Fadenzuführungsvorrichtung nach einem der Ansprüche 1- 7, wobei der mindestens eine beabstandete Endlosriemen eine erstes Fadenbewegungseinschränkungsmittel (29) umfasst.
  9. Fadenzuführungsvorrichtung nach einem der Ansprüche 1- 8, wobei der bewegliche Fadenträger ein Endlosriemen ist.
  10. Fadenzuführungsvorrichtung nach einem der Ansprüche 1-9, weiter umfassend eine Fadenausgabeführung (34) in einem Endbereich des beweglichen Fadenträgers, wobei die Fadenausgabeführung in einem flachen Bereich des beweglichen Fadenträgers gelegen ist.
  11. Fadenzuführungsvorrichtung nach einem der Ansprüche 1 - 10, weiter umfassend ein zweites Fadenbewegungseinschränkungsmittel (32), das in einem Endbereich des beweglichen Fadenträgers gelegen ist, wobei das zweite Fadenbewegungseinschränkungsmittel (32) angepasst ist, um zu verhindern, dass Faden den beweglichen Fadenträger auf unkontrollierte Weise verlässt.
  12. Fadenzuführungsanordnung, umfassend eine Fadenzuführungsvorrichtung nach einem der Ansprüche 1 -11, wobei die Anordnung weiter eine Gleitzuführvorrichtung (38) umfasst, die vor der Fadenzuführungsvorrichtung gelegen ist.
  13. Verfahren zum Steuern einer Fadenzuführungsvorrichtung (16), die Faden (40) zu einer Textilmaschine (10) zuführt, wobei Faden in die Textilmaschine eingelegt wird, wobei das Verfahren Folgendes umfasst:
    - Ziehen (501) von Faden aus einem Fadenspeicher (14) unter Verwendung eines Schligenbilders (18),
    - Auflegen (503) des Fadens in einem meanderförmigen Muster auf einen beweglichen Fadenträger durch Positionieren des Fadens auf sich bewegenden Schlingenhalteelementen, die an beiden Seiten eines Vorderbereichs des beweglichen Fadenträgers bereitgestellt sind, wobei der Schligenbilder den Faden auf den sich bewegenden Schlingenhalteelementen durch Bewegen des Fadens von Seite zu Seite positioniert,
    - Befördern (505) des Fadens in eine erste Vorwärtsrichtung unter Verwendung des beweglichen Fadenträgers (24),
    - Lassen (507), dass Faden, der auf dem beweglichen Fadenträger liegt, den beweglichen Fadenträger an einem Ausgabebereich des beweglichen Fadenträgers verlässt,
    gekennzeichnet durch Antreiben von mindestens einem Endlosriemen (26), der von dem beweglichen Träger beabstandet ist und sich parallel zu dem beweglichen Fadenträger bewegt.
  14. Computerprogrammprodukt, umfassend Computerprogrammcode, der angepasst ist, um zu bewirken, dass eine Fadenzuführungsvorrichtung nach Anspruch 1 das Verfahren des Steuerns der Fadenzuführungsvorrichtung nach Anspruch 13 ausführt.
EP17839920.0A 2016-08-09 2017-06-20 Fadenzuführungsvorrichtung mit langgarnpuffer Active EP3497274B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1650988A SE1650988A1 (en) 2016-08-09 2016-08-09 Yarn feeding device with long yarn buffer
PCT/SE2017/050670 WO2018030932A1 (en) 2016-08-09 2017-06-20 Yarn feeding device with long yarn buffer

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EP3497274A1 EP3497274A1 (de) 2019-06-19
EP3497274A4 EP3497274A4 (de) 2020-03-11
EP3497274B1 true EP3497274B1 (de) 2023-03-22

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CN (1) CN109477260B (de)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU441457B2 (en) * 1969-09-25 1973-10-12 Tevin Limited Apparatus for automatic control of tow takeup means by detecting the amount of tow on conveyor
GB1355687A (en) 1971-07-22 1974-06-05 Tomkinsons Ltd Yarn feeding device for looms
CH542130A (de) * 1971-09-02 1973-09-30 Sulzer Ag Einrichtung zum Speichern von band- oder fadenförmigem Material für Textilmaschinen, insbesondere Webmaschinen
DE2550118C3 (de) * 1975-11-07 1980-01-24 Centralny Osrodek Badawczo-Rozwojowy Maszyn Wlokienniczych Centmatex, Lodz (Polen) Verfahren und Vorrichtung zum Wickeln von kegeligen Kreuzspulen
DE3344835A1 (de) * 1983-12-12 1985-06-13 Widmann, Alfred, 7517 Waldbronn Liefervorrichtung fuer faeden, insbesondere zu webmaschinen
FR2566436B2 (fr) * 1984-02-01 1990-09-21 Alsacienne Constr Mat Tex Perfectionnement a un dispositif deposant a plat une reserve de fil de trame sous forme de zigzag
FR2558854B1 (fr) * 1984-02-01 1986-05-23 Alsacienne Constr Mat Tex Procede et dispositif pour deposer a plat une reserve de fil de trame sous forme de zig zag
JP2596231B2 (ja) * 1991-02-05 1997-04-02 株式会社豊田自動織機製作所 ジェットルームにおける緯入れ制御装置
US5150739A (en) * 1991-07-11 1992-09-29 E. I. Du Pont De Nemours And Company Weft feeding through an accumulator without substantial twist
DE4324160A1 (de) * 1993-07-19 1995-01-26 Iro Ab Eintragsystem für eine Düsenwebmaschine
WO2000048474A1 (en) * 1999-02-17 2000-08-24 Amylum Belgium N.V. Calf milk replacer
CN102099520B (zh) * 2008-07-15 2014-02-19 必佳乐公司 用于纬纱的存储元件

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SE1650988A1 (en) 2018-02-10
WO2018030932A1 (en) 2018-02-15
EP3497274A4 (de) 2020-03-11
EP3497274A1 (de) 2019-06-19
CN109477260A (zh) 2019-03-15
CN109477260B (zh) 2021-07-16

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