EP2753735B1 - Vorrichtung zur herstellung von maschenware - Google Patents

Vorrichtung zur herstellung von maschenware Download PDF

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Publication number
EP2753735B1
EP2753735B1 EP12775845.6A EP12775845A EP2753735B1 EP 2753735 B1 EP2753735 B1 EP 2753735B1 EP 12775845 A EP12775845 A EP 12775845A EP 2753735 B1 EP2753735 B1 EP 2753735B1
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EP
European Patent Office
Prior art keywords
roving
drafting
roller pair
knitting machine
spinneret
Prior art date
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Application number
EP12775845.6A
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German (de)
English (en)
French (fr)
Other versions
EP2753735A2 (de
Inventor
Johannes Barth
Hermann Schmodde
Stephan Geiler
Michael Lau
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Terrot GmbH
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Terrot GmbH
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Application filed by Terrot GmbH filed Critical Terrot GmbH
Publication of EP2753735A2 publication Critical patent/EP2753735A2/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/28—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by inserting twist during drafting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • 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
    • D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
    • D04B35/16—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage with detectors associated with a series of threads
    • 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
    • D04B35/32—Devices for removing lint or fluff
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/14—Circular knitting machines with independently-movable needles with provision for incorporating loose fibres, e.g. in high-pile fabrics

Definitions

  • the present invention relates to an apparatus for producing knitted fabric comprising a knitting machine and at least one roving warping and consolidation unit comprising a roving supply unit with which a roving in the form of a non-consolidated fiber structure can be provided, a drafting system in which the roving in the form of a roving conveying direction at least one sliver can be supplied, and a spinneret device, with which an emerging from the drafting, warped roving on a fiber consolidation section can be acted upon with compressed air having.
  • the invention also relates to a method for producing knitwear comprising a knitting machine and at least one roving warping and consolidation unit, by means of which a roving unit in the form of an unconsolidated fiber structure is provided by a roving supply unit, which feed roving in the form of at least one roving to a drafting system in a roving conveying direction is, the roving is warped by the drafting, and the emerging from the drafting, warped roving is applied by a spinneret device on a fiber consolidation line with compressed air and thereby solidified.
  • the core of the fiber structure includes, based on its cross section, the largest proportion of the fibers.
  • the Umwindemaschinen wrap around the core and overlap and interlock with each other.
  • the solidification of the fiber structure achieved thereby is not equivalent to an effective yarn twist, as it can be achieved, for example, on ring spinning machines. Instead, only a so-called false-twisted wire is formed by the spinneret, the twisting of which would more or less dissolve when wrapped by binding fibers Fiber structure after the spinneret longer distances would have to travel on the way to the knitting machine.
  • a tube is used, through which the looped fiber structure is fed on a short path directly to the knitting needles of the knitting machine. With the help of the knitting needles then a final solidification of the fiber structure within the knit fabric produced.
  • the known method has the advantage that a particularly soft grip of the fabricated knitwear can be achieved hereby by using an only extensively consolidated fiber structure.
  • a device for producing a knitted fabric is described on a knitting device, wherein each knitting point of the knitting device is preceded by a drafting device for producing a warped fiber structure.
  • at least one active transport element for the warped fiber structure is arranged between the pair of output rollers of the drafting system and the knitting point.
  • the active transport element may consist of a delivery mechanism, which is formed for example from a pair of rollers.
  • one or more swirl devices are arranged between the pair of delivery rollers of the drafting system and the active transport element, which impart sufficient strength to the fiber structure consisting essentially of parallel fibers for transport to the knitting point.
  • Spinning tubes each with a pneumatically acting swirl nozzle, are proposed as swirling devices. If the distance between the active transport element and the knitting point is smaller than the average fiber length of the warped fiber structure, the fiber structure can be fed directly to the knitting point. However, if this distance is greater than the average fiber length, a further twisting device is arranged between the active transport element and the knitting point, which gives the warped fiber structure sufficient strength for transport.
  • the publication DE 10 2007 052 190 A1 discloses a method and apparatus for improving the quality of a fiber strand of staple fibers leaving a drafting system. It is proposed to arrange a sensor for the incoming into the drafting sliver or roving before the drafting. As a result, the quality of the fiber structure or process can be monitored in front of the drafting system and defects are eliminated there. In addition, upon detection of variations in mass of the fiber structure or roving, the drafting system or a downstream stretching device can be stopped.
  • a device of the above type in which the spinneret downstream of a fiber consolidation line limiting pinch roller pair is provided, the pinch rollers are mutually rotatable in opposite directions, wherein the pinch roller pair a clamping passage for emerging from the spinneret, warped, solidified roving forms and is provided following the nip roller pair a supply for emerging from the nip roller pair, warped, solidified roving to the knitting machine.
  • the spinneret device is thus provided downstream of a clamping point that can be realized by the nip roller pair and delimits the fiber hardening section.
  • the terminal point can according to the invention in a relatively small Distance to the spinneret means are arranged, while the distance from the pair of nip rollers to the knitting needles of the knitting machine, that is, the distance between the spinning unit and the knitting unit, a practically useful measure.
  • the pair of pinch rollers enables a speed decoupling of the technical system of the roving warping and the roving strengthening from the system of the yarn supply to the knitting machine.
  • the nip formed by the pinch roller pair blocks the spurious wire formation realized by the spinneret means. That is, the pinch roller pair defines one end of the spins caused by the spinneret assembly and thus one end of the false wire. In this way, the pinch roller pair ensures that the warped, solidified roving emerging from the pinch roller pair maintains its strength.
  • clamping point made available by the clamping roller pair allows the deflection of the emerging from the pair of pinch rollers, warped, solidified roving in the working plane of the knitting machine.
  • a warped, consolidated roving can thus be provided on the roving warping and consolidation unit, which is solidified only in its circumference by the spinneret device, wherein a core of the roving, in which the fibers are substantially free of twisting and substantially aligned parallel to each other are entwined by Umwindemaschinen.
  • the core of the roving comprises the largest part of the fibers with regard to its cross section.
  • the Umwindemaschinen wrap around the core of the roving in its peripheral region and overlap and interlock with each other.
  • This soft, bulky, yet warped and consolidated roving can be fed by means of the feeder provided following the pinch roller pair over a length of the knitting machine which is suitably long for industrial applications, where a particularly soft and dense knit fabric can be produced using this warped, consolidated roving ,
  • the device according to the invention is characterized in that, although the knitting machine can be arranged at some distance from the roving warping and consolidation unit, a very reliable and efficient working with the device is possible, since the clamping roller pair achieves a lasting stability of the consolidation of the roving becomes.
  • the rotational speed of at least one pinch roller of the pinch roller pair is variable. In this way, the tension condition of the warped, consolidated roving in the area between the spinneret and the nip point realized by the pinch roller pair can be sensitively adjusted.
  • the distance between the spinneret device and the nip roller pair is in a range of 10 cm to 25 cm. This distance is long enough to allow sufficient wrapping of the core of the roving with Umwindemaschinen, so that a sufficient circumferential consolidation of the roving is feasible.
  • the pinch roller pair can be provided, for example, directly above the spinneret device.
  • the distance between the pinch roller pair and the knitting needles of the knitting machine is in a range of 1 m to 2.5 m. That is, in this embodiment, the knitting machine may be disposed at a sufficient distance from the roving warping and consolidation unit to be regarded as a modified spinning unit.
  • knitting unit on the one hand and spinning unit on the other hand can be arranged practically useful, with sufficient distance from each other in an operating hall.
  • the spinneret device has the warped roving in the Vorgarn standard politicians automatically promoting spinnerets. That is, the transport of the warped roving takes place during the spinning process by the oriented in the direction of air flow of the spinneret device.
  • the spinneret device used in the invention is able to spin on itself. The latter is in the device of the document WO 2009/043187 A1 not possible. In this device, the spinneret described there can not convey yarn out of the spinneret, so do not spur.
  • the spinneret device has two pneumatically operated spinnerets arranged in succession in the roving conveying device and having opposite directions of rotation.
  • the spinneret device preferably consists of two successively arranged air vortex nozzles. The air flows generated in the two spinnerets have opposite directions of rotation.
  • the swirl nozzle which is arranged as a second spinneret in the roving conveying direction, thereby generates a false twist on the fed-in fiber material, optionally including an auxiliary thread introduced into the fiber material.
  • the spinneret, the injector nozzle, arranged in the roving conveying direction in front of the swirl nozzle, causes the fiber material to untwist due to the opposite direction of rotation. This leads to the spreading of edge fibers. These are wound around the fiber bundle core due to the rotation generation of the swirl nozzle.
  • Typical of the resulting yarn are abdominal bandages, that is to say fibers bound horizontally to the yarn axis. Due to the very high rotational speeds of the air, there is a continuous wrapping of the fiber bundle core with edge fibers.
  • the warped, solidified roving emerging from the spinneret means has a soft, bulky core, the periphery of which is solidified by the peripheral fibers wrapping the core.
  • the rotational intensity and / or pressure of the compressed air emerging from spinnerets of the spinneret device can be set differently.
  • the quality of the knitted fabric can be influenced by the operation of the spinnerets and / or the spinning speed can be matched to the knitting speed of the knitting machine.
  • proportional valves are incorporated in the compressed air supply of spinnerets of the spinneret device, by which the compressed air supply is proportional to the Vorgarn purposeissus the Vorgarnverzugs- and -verfestistsappel adjustable.
  • the spinning nozzles operating as injector nozzles and the spinning nozzles operating as swirl nozzles are each combined in series to form a nozzle complex.
  • Proportional valves are integrated in the compressed air supply of both nozzle complexes. These are used for a trouble-free start and stop the Vorgarnverfestist for later processing on a knitting machine.
  • the compressed air supply of the nozzle complexes is necessary even before the beginning of the roving consolidation due to the short reaction times at machine start.
  • the intervening in the compressed air supply proportional valves prevent even when switched off technical system, a rotation generation by means of air jets takes place through the spinneret device. This avoids that due to the lack of supply of fiber material by the drafting an over-rotation of the already present in the spinneret system fiber material takes place in the spinnerets. The latter would result in damage and destruction of the newly formed solidified roving after a short time.
  • the proportional valves allow speed-proportional control of the air supply.
  • spinnerets of the spinneret device are laterally changeable. This results in a time-variable thread course between the pairs of rollers of the drafting and the pinch roller pair. That is, the roving or warped roving does not constantly contact the same contact surface of the rollers. A shrinkage of the rubber top rollers used on the drafting and the pinch roller pair is prevented.
  • a defined traversing path is preferably provided. More advantageously, the traversing extends over a plurality of roving drafting and consolidation units combined in series.
  • a suction device for extracting loose fibers is provided on the spinneret device.
  • the present invention is between the spinnerets of the spinneret, the spinneret downstream and each provided on a pair of output rollers of the drafting a suction unit, wherein the outputs of the suction units are brought together to form a suction channel.
  • those provided between the spinnerets and after the spinneret device Suction units preferably designed so that they do not damage the warped roving in the process. By bringing all suction units together to form a suction channel, the fiber flow can be discharged centrally.
  • the suction channel is conical in order to ensure uniform flow conditions over the system width.
  • a rotating fan device is provided on this, which can be attached, for example, to the knitting machine and controlled by this.
  • the fan device serves the uniform distribution of the non-extracted fiber flow. An accumulation of fibers, which could lead to process failure, is thereby avoided.
  • a capping device is provided around the spinneret device. Preferably, a region of the drafting system is also protected by this cover device.
  • the device to further increase the reliability of the device according to the invention are provided in an advantageous embodiment of the device at the spinneret and / or at the drafting system operable at intervals Abblasdüsen. Due to the interval operation of the blow-off nozzles, the compressed air consumption can be reduced.
  • the blow-off nozzles are integrated in the cover device.
  • the drafting device of the device according to the invention is coupled to a Hilfsfadenzu slaughterhouse adopted to feed at least one auxiliary thread.
  • the auxiliary thread may on the one hand be an inelastic thread or on the other hand an elastane thread, that is to say an elastic thread.
  • an auxiliary thread Through the use of an auxiliary thread, the strength of the warp fed fed, solidified Vorgarnes can be increased and the reliability of the executed on the device according to the invention process can be increased. Will that in the inventive device Treated roving fed an auxiliary thread, creating a core-sheath yarn, wherein the core is formed by the auxiliary thread.
  • the auxiliary yarn supply device preferably has a take-off realized by an output roller pair of the drafting system.
  • the auxiliary thread can be picked up by the pair of output rollers of the drafting system and integrated into the warped roving.
  • the speed of the auxiliary yarn feed can be optimally tuned to the rotational speed of the pair of output rollers.
  • the mass fraction of the auxiliary thread on the warped, solidified roving emerging from the nip roll pair is 5 to 25%.
  • the warped, consolidated roving is given sufficient strength, but softness and bulkiness of this roving are not or hardly adversely affected.
  • the auxiliary yarn feeding device has a tube system, through which at least one auxiliary thread can be fed to the drafting system.
  • a tube system through which at least one auxiliary thread can be fed to the drafting system.
  • the auxiliary thread is an inelastic thread.
  • Through the tube system can be done without distortion and thus harmless delivery of the auxiliary thread to the drafting system.
  • auxiliary thread is an elastane thread
  • the auxiliary thread feeding device has a separate drive, so that the elastane thread can be fed under defined tension to the drafting system.
  • the one or more auxiliary threads are provided on supply spools arranged in a creel and can be supplied by them to the drafting system.
  • the auxiliary thread can be outsourced, wherein the storage of the auxiliary thread is realized by the creel.
  • At least one sensor is provided on at least one transport path of the roving yarn, the warped, consolidated roving yarn and / or the auxiliary yarn from the roving supply unit to the drafting system and / or from the nip roller pair to the knitting machine and / or in the auxiliary yarn feeding device provided for detecting the presence, thickness and / or tension of the roving and / or auxiliary thread. That way, the procedure can be for the roving treatment as well as the quality of the treated at the inventive device roving be monitored by means of at least one sensor. This sensor can be used, for example, to select "thick spots" or cross-sectional enlargements of the treated roving.
  • the presence of the roving and / or auxiliary thread can be determined, which is a monofilament monitoring.
  • the at least one sensor can also be used for example for monitoring a Luntenschar, with one sensor monitors all located in a plane Lunten. If the at least one sensor is used to monitor an auxiliary thread, the auxiliary thread is advantageously monitored during the feed to the drafting system. In this case, a presence sensor is typically used as the sensor, which ensures the guaranteed presence of the auxiliary thread. Such monitoring of the auxiliary thread can be used both inelastic and elastic auxiliary threads.
  • a curved spring body having Luntenklemme serves to secure the fuse when opening the drafting system.
  • no spring force acts on the pressure rollers during the opening of the drafting device pressure arm.
  • no more holding power acts on the fuse due to the arrangement of the drafting system in a vertical orientation, the fuse would fall down due to the force of gravity and cause the process to collapse.
  • the Luntenklemme has with its curved spring body a construction which makes it possible to securely clamp the fuse with the drafting pressure arm open. This ensures the positionally accurate position of the fuse. Furthermore, the bent spring body of the sliver clamp enables it to release the sliver when the drafting-pressure arm is closed.
  • the Luntenklemme is designed so that, before the spring force of the pairs of rollers for fixing the fuse is too low, it clamps securely. Even when closing the sliver clamp opens only after sufficient contact pressure through the pairs of rollers and releases the fuse.
  • the sliver clamp is designed to have two clamps for secure detection of two slivers.
  • the terminals of Luntenklemme can be fastened, for example, in modules on a rail.
  • the Vorgarnverzugs- and -verfest Trentsaku of the device according to the invention is designed so that the feed of the Vorgarnes from the Vorgarnvorratshow to the pinch roller pair from bottom to top, that is against gravity takes place. That is, in a preferred embodiment of the device according to the invention, the drafting arrangement is arranged vertically. This has the advantage that the warped, solidified roving emerging from the nip roll pair exits at the top of the roving warp and consolidation unit and can be fed from there to the knitting machine.
  • the supply of emerging from the pair of pinch rollers, warped, solidified roving to the knitting machine is provided so far above the device that the warped, solidified roving above the head of the knitting machine can be fed.
  • the warped, consolidated roving can be supplied particularly suitable for the knitting needles of the knitting machine.
  • the knitting machine is a circular knitting machine and around the circular knitting machine at least two Vorgarnverzugs- and -verfest Trentsmodule are provided.
  • the circular knitting machine can be supplied with threads from several sides.
  • the controls of the circular knitting machine and the roving warping and consolidation modules be coupled together.
  • the workflows of Vorgarnverzugs- and consolidation modules can be optimally adapted to the workflow of a circular knitting machine, preferably the circular knitting machine sets the master signals for the drafting and spinning units.
  • a feeder that is to say a positive or storage feeder, is provided for thread storage between the pair of pinch rollers and a yarn guide of the knitting machine.
  • a method is realized, in which by a spinneret device downstream pair of nip rollers whose pinch rollers rotate in opposite directions, the distorted, solidified roving emerging from the spinneret means clamped and thereby the Faserverfest Trentsumble is limited and emerging from the pinch roller pair, warped, solidified roving is fed to the knitting machine.
  • a roving in the form of a non-solidified fiber structure is used as the starting material.
  • This roving is very soft and voluminous due to the not yet present solidification, but is also susceptible to cracking.
  • This roving is fed to the drafting system in the form of at least one sliver, particularly preferably in the form of two slivers, where it is warped by corresponding rollers of the drafting system.
  • This, out of the drafting, warped roving is passed through the spinneret and pressurized in this with compressed air.
  • the compressed air is provided in such a way that a core of the warped roving is wrapped circumferentially by Umwindemaschinen. This leads to a so-called false-wire training.
  • an end of the fiber consolidation section after the spinneret device is defined by the pinch roller pair provided there.
  • the false twist education is terminated at the nip. It does not come subsequently to a Aufdrillen the Core of the warped roving reinforcing loop fibers.
  • the solidification remains and the emerging from the pinch roller pair, warped, solidified roving can be transported according to the invention over relatively long distances to the knitting needles of the knitting machine without the risk that this warped, solidified roving on the transport path of the pinch roller pair to the Knitting machine rips.
  • spinnerets of the spinneret device automatically convey the warped roving in the roving conveying direction.
  • the spinnerets are even able to spin in this embodiment of the method according to the invention itself.
  • spinnerets of the spinneret device operate pneumatically and act on the drafting from the drafting, warped roving with compressed air with opposite directions of rotation, the state of tension of warped, consolidated roving in the area between the spinneret and the nip roller pair by adjusting the rotation intensity and / or the pressure of the emerging from the spinnerets of the spinneret device compressed air is adjusted.
  • the quality and especially the strength of emerging from the pinch roller pair, warped, solidified roving can be optimally adjusted to a smooth process flow to be able to produce and produce a high quality knitted fabric on the knitting machine.
  • the compressed air supply of spinning nozzles of the spinning nozzle device in proportion to the roving conveying speed of the roving warping and consolidation unit according to the present invention, a speed-proportional control of the air supply to the spinning nozzle device is made possible.
  • the necessary speed signal can be provided by the knitting machine. This makes it possible to start and stop the knitting machine without damaging the fiber material or treated roving.
  • At least one fan of a fan device rotates on the device, wherein an area around the spinneret device and / or the drafting device is protected by a cover device against air turbulence caused by the fan device.
  • At least one auxiliary thread is fed to the drafting system.
  • an auxiliary thread an inelastic thread, that is a so-called core thread, or an elastic thread, that is a so-called elastane thread, are used.
  • the auxiliary thread can provide increased stability to the roving treated with the method.
  • auxiliary thread is withdrawn by a pair of output rollers of the drafting system. Since the rollers of the drafting move with it in the course of the drafting of different speed, the auxiliary yarn supplied to the pair of output rollers of the drafting is exposed to only a single rotational speed, so that the supply of the auxiliary thread can be suitably adapted to this rotational speed. At this point, the auxiliary thread can thus be easily inserted between the fibers of the drawn through the drafting roving.
  • a further embodiment of the method provides that the auxiliary thread is fed to the drafting system through a tube system.
  • the auxiliary thread can be protected during its transport.
  • this feeder opens up the possibility of pneumatic auxiliary yarn feeding in bamboosfall.
  • an elastane thread is used as the auxiliary thread, it is expedient to feed it to the drafting system with the aid of a separate drive.
  • a highly elastic, preferably polyfiler or multifilament auxiliary thread can be fed to the drafting system under a defined tension.
  • the method and the product produced therewith can be monitored particularly well if, according to a preferred embodiment of the method, the presence, thickness and / or tension of the roving and / or the auxiliary thread on at least one transport path of the roving, the warped, solidified roving and / or of the auxiliary thread from the roving supply unit to the drafting device and / or from the pair of pinch rollers to the knitting machine and / or in the auxiliary thread supply device of at least one sensor.
  • a particularly advantageous embodiment of the method is provided by means of a provided between the rollers of the drafting and a bent spring body having Luntenklemme with open drafting jib arm the jaw clamped and closed, the pressure rollers of the drafting against the Drive rollers of the drafting system pushing drafting device arm released the fuse.
  • the with the drafting system arm mechanically coupled Luntenklemme thus supports the drafting system operation in the case of new equipment and troubleshooting and in particular prevents slippage of the roving.
  • the method is carried out so that the roving from the roving supply unit to the nip roller pair from bottom to top, that is, against gravity, is supplied.
  • the distorted, solidified roving emerging from the nip roll pair is formed above the roving warp and consolidation unit and thus can be suitably fed to the knitting machine.
  • the warped, solidified roving is fed overhead the knitting machine. This makes it particularly easy to be fed to the knitting needles of the knitting machine.
  • the knitting machine is a circular knitting machine and at least two roving warping and consolidation modules are provided around the circular knitting machine which ensure the supply of the circular knitting machine, wherein the circular knitting machine performs a master function for the Vorgarnverzugs- and consolidation modules.
  • two, three or even more roving warping and consolidation modules, which are arranged around the circular knitting machine take over the supply of the circular knitting machine with warped, solidified roving, which is determined by the circular knitting machine, at what time and to what extent the supply should be done by each of the Vorgarnverzugs- and -verfest Trentsmodule.
  • a very effective system can be made available.
  • the device or plant commissioning is carried out with Vorgarnverzugs- and -verfest Trentsöen decoupled from the knitting machine by vortechnikz the Vorgarnverzugs- and consolidation units warped, consolidated roving for introduction into a yarn guide the knitting machine.
  • the installation or plant commissioning is carried out with Vorgarnverzugs- and -verfest Trentsakuen coupled by the knitting machine by an inelastic auxiliary thread immediately into a Yarn leader of the knitting machine is introduced and then warped, consolidated roving is added by the roving warp and consolidation units.
  • the inelastic auxiliary thread is separated again after commissioning of the knitting machine and held in readiness by clamping devices.
  • the warped, solidified roving emerging from the nip roll pair is stored on a feeder, ie a positive or storage feeder. This ensures a continuous supply of the knitting machine with warped, consolidated roving produced by the roving warping and consolidation unit.
  • FIG. 1 shows schematically in a sectional side view of a possible embodiment of a device 1 according to the invention for the production of knitted fabric, on which the described method for producing knitted fabric is executable.
  • the device 1 comprises a Vorgarnvorratsaku 3, in which roving 4a, which is in the form of a non-solidified fiber structure, on so-called flyer coils, of which in the schematic representation in FIG. 1 only one flyer bobbin 31 is shown, is fed via at least one transport shaft 32 in a Vorgarn rawides A Vorgarnverzugs- and -verfest Trentsaku 10.
  • the Vorgarnverzugs- and -verfest Trentsech 10 has a drafting 5 and a spinneret 6.
  • the roving 4a provided by the roving supply unit 3 first passes into the drafting system 5.
  • the drafting system 5 has an input roller pair 51 with an input shaft 511 and a pressure roller 512, an intermediate roller pair 52 with an intermediate shaft 521 and a top roller 522 and a pair of output rollers 53 having an output shaft 531 and a pressure roller 532.
  • the upper and lower pressure rollers 512, 522 and 532 are pressed by means of a drafting pressure arm 54 against the drive rollers 511, 521 and 531 using springs 541.
  • the drafting 5 is a so-called Riemchenstrecktechnik.
  • a strapping system is provided on the intermediate roller pair 52.
  • the Riemchensystem serves the defined acceleration of the treated in the drafting 5 roving 4a by controlled guidance.
  • the strapping system has a top apron aggregate 56 and a bottom apron 57.
  • the Unterriemchen 57 passes over the intermediate shaft 521 and a strap bridge 58 and a clamping element 59.
  • the clamping element 59 is used to set a correct Unterriemchenmechanical. From the force on the Unterriemchen 57 results in a frictional connection between this and the intermediate shaft 521. This allows the drive of the Unterriemchens 57.
  • the Oberriemchenaggregat 56 consists of cage and straps.
  • the upper roller 522 and the Oberriemchenaggregat 56 are pressed by defined spring forces on the associated driven intermediate shaft 521. The resulting frictional connection causes the movement.
  • the input shaft 511 and the intermediate shaft 521 are driven by a common drive 97 (see FIG FIG. 16 ) provided.
  • the output shaft 531 has in the embodiment shown by its own drive 96 (see FIG. 16 ).
  • the vertical distance between the centers of the pressure roller 512 of the pair of input rollers 51 and the top roller 522 of the intermediate roller pair 52 that is, the so-called apron width 561
  • the vertical distance between the centers of the top roller 522 of the intermediate roller pair 52 and the pressure roller 532 of the output roller pair 53 that is the so-called main field width 562
  • main field width 562 are adjustable for different fiber lengths of the starting material.
  • FIG. 1 schematically only a fuse is shown, which is supplied to the drafting 5, as in FIG. 3 shown according to a particularly preferred embodiment of the device 1 according to the invention to increase the efficiency by reducing the Umrüstauffilter and to increase the Garn GmbH vibrkeit each drafting 5 5 Flyerlunten (roving 4a) supplied.
  • the working direction of the drafting 5 is in the illustrated preferred embodiment vertically from bottom to top.
  • the radial withdrawal of the roving 4a is realized by the input roller pair 51 of the drafting 5.
  • the deflection of the withdrawn from the flyer bobbin 31 roving 4a in the vertical working plane is implemented by the example belt-driven transport shaft 32. This also allows the non-destructive transport of the roving 4a.
  • the drive of the transport shaft 32 for example, with appropriate translation via the drive for the input shaft 511 of the input roller pair 51 and the intermediate shaft 521 of the intermediate roller pair 52 of the drafting 5 done.
  • the roving 4a is then warped by the drafting 5.
  • the drafting system 5 has the task of supplying a defined amount of fiber for the further processing process.
  • the delay required for this purpose is realized by the above-mentioned different speed ratios of the successive pairs of rollers 51, 52, 53.
  • the preliminary delay takes place between the input roller pair 51 and the intermediate roller pair 52.
  • the subsequent main delay is converted between the intermediate roller pair 52 and the output roller pair 53.
  • the speed of the roller pairs 51, 52, 53 increases in the vertical direction upwards.
  • the roving 4a (Flyerlunte) must be clamped, and then accelerated by the different speeds of the roller pairs 51, 52, 53 and thus warped. This is done by the above-described construction of the drafting system 5, which is composed of driven, extending over the system shafts 511, 521, 531 and these opposed drive rollers 512, 522, 532, each extending over a drafting 5, composed.
  • FIG. 2 schematically shows an embodiment of the device 1 according to the invention with an additional auxiliary yarn feeding device 9.
  • the other elements of the in FIG. 2 as well as in the following figures illustrated embodiments of the device 1 according to the invention essentially correspond to those of FIG. 1 , Therefore, the same elements are also provided with the same reference numerals, while in other elements of the device 1 for better clarity in FIG. 2 and the further figures, the reference numerals have been omitted. On the above description concerning this with the elements of FIG. 1 the same elements should be referred to.
  • the Hilfsfadenzu respirinides 9 serves to increase the strength and increase the reliability of the executed on the device 1 process.
  • the drafting 5 an auxiliary thread 91 is fed, which in the example of FIG. 2 an inelastic thread, that is a so-called core thread, is.
  • the auxiliary thread 91 is fed to the drafting device 5 via a tube system 93 in the example shown.
  • the tangential deduction of the auxiliary thread 91 is realized via the rotating pair of output rollers 53 of the drafting 5.
  • auxiliary thread 91 By supplying the auxiliary thread 91 only during the main delay this passes through only one terminal point on the drafting system 5. This ensures a distortion-free and thus harmless delivery of the auxiliary thread 91.
  • the auxiliary thread 91 is incorporated into the distorted in the drafting 5 roving 4a. This results in a core-shell structure of the drafting 5 emerging, warped roving 4b.
  • FIGS. 1 and 2 occurs from the drafting 5 exiting, warped, consolidated roving 4b, depending on the embodiment with or without auxiliary thread 91, below in the drafting 5 downstream spinneret 6 a.
  • the warped roving 4b is rotated by means of air jets on a fiber bonding section 60.
  • the spinneret 6 consists of two successively arranged spinnerets 61, 62, which are air vortex nozzles.
  • the air flows generated in the two spinnerets 61, 62 have opposite directions of rotation B, C.
  • the second spinneret 62 the so-called swirl nozzle downstream of the first spinneret 61, generates a false twist on the fed-in fiber material, optionally including auxiliary thread 91.
  • the spinneret 61 arranged in front of it the so-called injector, causes due to the opposite direction of rotation, a twisting of the fiber material. This leads to the spreading of edge fibers. These are wound around the fiber bundle core due to the spin generation of spinneret 62.
  • Typical of the resulting, warped, consolidated roving 4c are abdominal bandages, that is to say fibers bound horizontally to the yarn axis. Due to the very high rotational speeds of the air, which are generated by the spinneret 6, there is a continuous wrapping of the fiber bundle core with edge fibers. The roving transport takes place during the spinning process through the oriented in the direction of air flow. As a result, a warped, consolidated roving 4c emerges from the spinneret device 6 at a speed v 2 .
  • the spinneret device 6 operates as follows: First, at the drafting system exit rollers 531, 532, the fiber ribbon is taken over by means of the sucking, rotating air stream provided by the spinneret 61, which acts as a suction nozzle.
  • the spinneret 62 which is arranged at a defined distance from the spinneret 61, that is to say the so-called swirl nozzle, generates a counter-rotating air flow. Between the spinnerets 61, 62 may be interposed a cross-hatch barrier, which serves to produce Randmaschineumwind Institute with the aim of real solidification emerging from the spinneret 6, warped, consolidated roving 4c.
  • venting zones for the resulting exhaust air in connection with the removal of impurities and short fibers arising are provided. These vent zones are evacuated.
  • the spinnerets 61, 62 of the spinneret assembly 6 as well as the intermediate barrier have a defined design with respect to the nozzle bore, the number of holes, the bore angle, the nozzle diameter, the nozzle design, the barrier cross and the barrier cross design.
  • the spinnerets 61, 62 are in nozzle complexes 67, 68, which are in the form of nozzle strips, as shown in FIG FIG. 6 shown is summarized.
  • the compressed air supply to the spinnerets 61, 62 with the interposition of adjustable throttle valves to ensure constant pressure and flow conditions at all spinnerets 61, 62.
  • a pinch roller pair 7 is provided in the device 1 according to the invention.
  • the pinch roller pair 7 has two clamping rollers 71, 72 rotating counter to one another in opposite directions.
  • the warped roving 4c emerging from the spinneret device 6 is guided by the clamping rollers 71, 72 pressing against one another, which on the one hand form a bushing and on the other hand form a nip point for the roving 4c.
  • the clamping point formed by the pinch roller pair 7 delimits the fiber strengthening section generated by the spinneret device 6.
  • the operations of the spinnerets 61, 62 and the rotational speed of the pinch roller pair 7 and the distance between the spinneret 6 and the pinch roller pair 7 are set so that the tension state of the warped, consolidated roving 4c in the area between the spinneret 6 and the pinch roller 7 is generated Terminal point is sensitive definable.
  • the pinch roller pair 7 typically has a driven pinch roller 71 and a pinch roller 71 pressing against it but not having a separate drive, but rotating pinch roller 72.
  • Pinch roller pair 7 enables decoupling of the roving warping and roving stitching system speed from the yarn delivery system to the knitting machine 2. Furthermore, the clamping point realized by the pinch roller pair 7 permits a deflection of the warp roller pair 4 emerging from the pinch roller pair 7 into the working plane of the knitting machine 2. The warped roving 4d emerging from the pinch roller pair 7 is then passed over as few as possible Turning points, like those in the FIGS. 1 and 2 shown deflecting point 74, a yarn guide 21 of the knitting machine 2 fed and incorporated by the stitch-forming process in the produced knit fabric.
  • FIG. 3 schematically shows an opposite FIG. 2 extended inventive device 1, in which a plurality of flyer bobbins 31 is used for storing the roving 4a.
  • the flyer bobbins 31 are integrated in the structure of the technical system. As a result of the integration, contamination or damage of the flyer bobbins 31 and thus of the roving 4a is significantly reduced. The necessary space is limited to a minimum.
  • the flyer bobbins 31 are suspended rotatably mounted. This allows a radial, rotation-free withdrawal of the roving 4a by the pair of input rollers 51 of the drafting system. 5
  • FIG. 4 schematically shows a detail of an embodiment of the device 1 according to the invention.
  • a particularly designed drafting device 5 is used.
  • a Luntenklemme 55 is provided between the input roller pair 51 and the intermediate roller pair 52.
  • the Luntenklemme 55 has a bent spring body 551, which an abutting with the drafting arm 54 closed to the drafting lever 54 and in Having this position strained bracket 552 and two clamping arms 553, 554 for the roving 4a.
  • the clamping arms 553, 554 extend along the roving conveying direction A through the drafting device 5.
  • the bent spring body 551 has such a shape that, when the drafting lever arm 54, as in FIG. 4 is closed, one of the clamping arms 554 is spread from the fuse, so that between the clamping arm 553 and the clamping arm 554 is an open gap 555, through which the fuse or the roving 4a can be conveyed through.
  • FIG. 5 shows the arrangement of FIG. 4 In this position, the drafting pressure arm 54 with the pressure rollers 512, 522, 532 provided thereon no longer presses on the drive rollers 511, 521, 531. Furthermore, the drafting pressure arm 54 no longer presses against the end of the bracket 552 of the sliver clamp 55. The bracket 552 relaxes. Due to the loosening tension of the bent spring body 551 close the clamping arms 553, 554, so that between the clamping arms 553, 554, the fuse, that is, the roving 4a is clamped.
  • the sliver or the roving 4a can be secured in opening the drafting system 5 despite arrangement of the drafting 5 in vertical alignment. There is thus no risk that the roving 4a could fall down due to the acting weight force with the drafting-pressure arm 54 open and could cause the process to collapse.
  • the Luntenklemme 55 is also designed such that it opens when closing the drafting device arm 54 only after sufficient contact force through the pairs of rollers of the drafting 5 and the fuse or the roving 4a releases.
  • two Luntenklemmen 55 are provided for securing two Lunten side by side.
  • the two Luntenklemmen 55 are mounted in modules on a rail.
  • FIG. 6 schematically shows a cross section through a usable in the device 1 according to the invention spinneret device 6.
  • the view D is a cross section through several combined into a nozzle complex 68 upper spinnerets 62 is shown.
  • the section D shows a cross-sectional view of one of these spinnerets 62.
  • the view E is a cross section through a nozzle complex 67 with arranged in a row next to each other, lower spinnerets 61, wherein section E is a cross section through one of these spinnerets 61 represents.
  • the nozzle complex 67 is located in the roving conveying direction A in front of the nozzle complex 68. That is, the spinnerets 62 are arranged downstream of the spinnerets 61.
  • proportional valves 63 serve for a trouble-free start and stop of the thread formation for further processing in a knitting machine 2.
  • the compressed air supply 64 of the nozzle complexes 67, 68 is necessary before the beginning of the roving consolidation due to the short reaction times at engine start. Without the interposed proportional valve 63 in the compressed air supply, rotation generation by means of air jets would take place even when the technical system was switched off. Due to the lack of supply of fiber material by the drafting 5 is an over-rotation of the existing already in the nozzle system fiber material in spinneret 61 and spinneret 62. This leads after a short time to damage and destruction of the newly formed solidified roving. A trouble-free start and stop process of the knitting machine 2 is thus not possible in such a case. However, the proportional valve 63 allows speed-proportional control of the air supply. Preferably, the necessary speed signal supplies the knitting machine 2 (see FIG. 16 ). As a result, according to the invention, starting and stopping of the knitting machine 2 is possible without damaging the fiber material or the consolidated roving 4b.
  • FIG. 7 schematically shows an embodiment of the device 1 according to the invention with a suction device 8.
  • Suction device 8 shown, other suction devices can be used according to the invention.
  • the roving strengthening takes place by means of rotation generation by air jets in the spinneret device 6.
  • the spinneret device 6 as also explained above, two successive spinnerets 61, 62 follow the drafting device 5. Due to the technological process of roving with the aid of a rotation produced by air jets, it is sometimes to complete separation of shorter fibers. These fibers are expelled by the air flow of the spinneret 61 and the spinneret 62 and form as fiber fly. To keep the technical system clean and to increase the efficiency of the device 1 according to the invention, the fiber flow is removed via the suction device 8.
  • a spinning station in each case three suction units 81, 82, 83 assigned.
  • the suction unit 81 is disposed between the two spinnerets 61, 62.
  • the suction unit 82 is connected downstream of the spinneret device 6.
  • the suction units 81, 82 are designed so that they do not damage the treated roving 4b in the solidification process on the spinneret 6.
  • the suction unit 83 serves for the defined cleaning of the pressure roller 532 of the pair of output rollers 53 of the drafting system 5. All described suction units 81, 82, 83 are used in the embodiment of FIG. 7 combined in a suction channel 84 and derived the fiber flow centrally.
  • the suction channel 84 is preferably designed conically in order to ensure uniform flow conditions over the system width.
  • FIG. 8 it can be seen, according to a preferred embodiment of the inventive device 1 for general maintenance of the technical system of Vorgarnverzuges and Vorgarnverfest Trent and the knitting machine 2, the assembly of a fan device 85 is provided with at least one rotating fan.
  • the fan device 85 can be factory mounted and controlled on the knitting machine 2.
  • the fan device 85 serves the uniform distribution of the non-extracted fiber flow. An accumulation of fibers, which can lead to process failure, is thereby avoided.
  • the area of the fiber extension and the transition to the spinneret 61 are to be protected from the ingress of air.
  • FIG. 8 shown embodiment of the device 1 according to the invention a covering device 86 for encapsulating the area against air turbulence attached.
  • the covering device 86 is designed, for example, in the form of a molded part, in which advantageously also a blowing device explained below is integrated.
  • a blow-off function-relevant points of the device 1 is provided with compressed air.
  • a blowing device 88 is used to blow off the flow of fibers in the rear part of the drafting arrangement 5.
  • the air nozzles of this blowing device 88 arranged in series are directed in the direction of the straps 57 of the drafting system 5.
  • Each air nozzle of the blowing device 88 is disposed between two straps 57 at a defined distance from the intermediate shaft 521 of the intermediate roller pair 52 of the drafting system 5.
  • Another, already mentioned above blowing device 87 is used to keep clean in the front region of the drafting system 5.
  • blowing device 87 between the pressure rollers 532 of the drafting 5 are arranged. They have the task of eliminating fiber flow and preventing the formation of fiber lumps.
  • the described blowing devices 87, 88 extend in an advantageous embodiment of the invention over half the system width. The compressed air supply is then realized in the middle of the system for both sides together. In addition, it is advantageous if the blowing devices 87, 88 are subjected to compressed air at intervals. As a result, the compressed air consumption can be reduced.
  • the device 1 according to the invention can be provided with various suction devices for removing fluff and for keeping the process-relevant working tools clean for the method for producing a knitted fabric.
  • Also particularly advantageous is the integration of a filter drum filter with fan to generate negative pressure and an automatic ejection of the waste fibers in each bar.
  • FIG. 9 schematically shows a possible according to an embodiment of the device 1 according to the invention traversing the spinneret 6 according to the directions given by the arrow F movement directions on a Vorgarnverzugs- and -verfest Trentsmodul 100 (Barre).
  • the in FIG. 9 illustrated Traversing the spinneret 6 provided to thereby increase the efficiency of the device 1 can.
  • the spinnerets 61, 62 of the spinneret device 6 can be moved transversely to the rollers of the drafting units 5 of the individual, adjacent roving warping and consolidation units 10, whereby the roving 4b supplied to the spinnerets 61, 62 changes contact with the rollers of the Drawstrings has 5 and thus not only at a single point, but evenly wears.
  • traversing preferably extends over a whole series of adjacent Vorgarnverzugs- and -verfest Trentsakuen 10 and can thereby be realized with a single drive 94.
  • FIG. 10 schematically shows an advantageous embodiment of the device 1 according to the invention, to which a plurality of sensors 11, 12, 13, 14 is used.
  • the process stability of the device 1 can be secured and the efficiency of the technical system of the roving warping and the roving strengthening can be increased, individual substeps of the method being monitored by the sensors 11, 12, 13, 14.
  • sensors 12, 13 on the flyer bobbins 31, by means of which a break of the flyer roving or of the roving 4a can be detected.
  • this is a so-called Luntenscharüberwachung, in which each one sensor 12, 13 monitors all located in a plane Lunten (roving 4a).
  • the sensors 12, 13 are mounted so that they detect the respective fuse only when broken by falling. No presence of the roving 4a during the process is controlled.
  • the control point and the guide members of the roving 4a are chosen so that the end of a roving (roving 4a) is detected.
  • sensor 14 which is located in the Hilfsfadenzu slaughter 9
  • the sensor 14 is a presence sensor.
  • the sensor 14 ensures the guaranteed presence of the auxiliary thread 91.
  • the warped from the pinch roller pair 7, warped, solidified roving 4b can in the arrangement of FIG. 10 be monitored by means of the provided after the pinch roller pair 7 sensor 11.
  • the sensor 11 serves to detect "thick spots", cross-sectional enlargements and the presence of warped, consolidated roving 4d. This is a monofilament monitoring.
  • sensors 11, 12, 13, 14 can be supplemented by further, not shown here sensors. Furthermore, it is possible that only a few of the FIG. 10 shown sensors 11, 12, 13, 14 are used in the device 1 according to the invention.
  • sensors on the device according to the invention for example, for Bewachtung the knitting machine 2 with respect to needle break, Luntenbewacht ceremonies, preferably using an optical system for an entire Barre, for Druck Kunststofftechnikschreibacht für, for overcurrent monitoring of the drives of the Barre and a replacement drive, the Einzelfadenberacecht proceedings the various stages the Vorgarn analog and the auxiliary threads based on a tension control, the monofilament shading of the various stages of roving and the auxiliary threads based on a thread movement, the monofilament shading of the various stages of roving and auxiliary threads with respect to thick areas, the monofilament shading of the auxiliary thread or core thread and be used for Beicacht proceedings the negative pressure of the suction device.
  • the sensors 11, 12, 13, 14 can be supplemented by further,
  • FIG. 11 schematically shows a development of in FIG. 10 illustrated embodiment of the device 1 according to the invention.
  • a feeder 73 that is, a positive or storage feeder, for storing the newly formed, warped, consolidated roving 4d provided.
  • the feeder 73 is followed by a sensor 15.
  • the sensor 15 is a presence sensor, by which a monofilament monitoring takes place.
  • FIG. 12 schematically shows an embodiment of the device 1 according to the invention, in which an elastic auxiliary thread 92 is fed to the drafting 5.
  • the Elastanfadenzu Installation has for this purpose a separate drive 99.
  • a highly elastic, preferably polyfiler or multifilament auxiliary thread 92 can be fed under defined tension to the drafting device 5.
  • FIG. 13 schematically shows a variant of the device 1 according to the invention, in which the auxiliary thread 91 is removed to produce a core-sheath roving.
  • the storage of the auxiliary thread 91 is realized by a creel 95.
  • the monofilament monitoring is performed by a presence sensor 14.
  • Suitable protection against fiber flow is implemented by an enclosure 89.
  • the separation of auxiliary thread 91 and technical system of Vorgarnverzugs- and -verfest Trentsech 10 is especially useful when using the auxiliary thread 91 exclusively for painting. As a result, the commissioning of the entire work systems of a knitting machine 2 with a few auxiliary threads 91 is possible. Due to the possible use of larger supply spools 90 for the auxiliary threads 91, an increase in the efficiency occurs.
  • FIG. 14 schematically shows a plan view of a knitting machine 2 in the form of a circular knitting machine, which is supplied from three sides with warped, solidified roving 4d by Vorgarnverzugs- and -verfest Trentsakuen 10, which are summarized in rows for Vorgarnverzugs- and consolidation modules 100.
  • FIG. 14 shown arrangement, for example, the supply of 86 knitting is possible.
  • a distance of up to 1.5 m between the circular knitting machine 2 and the Vorgarnverzugs- and consolidation modules 100 is possible without limitation and thread storage.
  • the roving warp and consolidation modules 100 are multi-system bars on which the drafting units 5 a number of Vorgarnverzugs- and -verfest whysakuen 10 are provided.
  • the Vorgarnverzugs- and -verfest Trentsmodule 100 and the ingot are designed as compact units in which all working tools for the thread formation, including the storage of the roving 4a in the form of flyers 31 are integrated.
  • the roving warping and consolidation modules 100 and the ingots are electronically coupled to the knitting machine 2, such as a circular knitting machine. As it is from the Figures 14 15, two or three bars of the circular knitting machine can be assigned to each circular knitting machine.
  • auxiliary drives for the flyer yarn feed to the drafting unit 5 may be provided on the roving warp and consolidation modules 100. It is also particularly helpful if operating aids for the Flyerluntenhandling are provided during maintenance or device of the drafting 5.
  • the above-described Luntenklemme 55 can be used.
  • the roving warp and consolidation modules 100 also, as already explained above, a traversing of fuses and spinnerets 61, 62 relative to the drafting 5 on.
  • an integrated suction technology is typically provided on such Vorgarnverzugs- and - solidification modules 100 according to the invention, as in Figure 14 as well as in FIG. 15 can be designed. However, other embodiments of the suction are possible.
  • the spinnerets 61, 62 are typically combined in the form of nozzle complexes 67, 68 which are located between drafting device 5 and pinch roller pair 7.
  • the nozzle complexes 67, 68 are in the form of nozzle strips which, for example, as in FIG. 6 can be trained.
  • the thread guide can be used on the Vorgarnverzugs- and -verfest Trentsmodulen 100 of the pinch roller pair 7 directly to the yarn guide 21 of the knitting machine 2 or with the interposition of a feeder 73, as in FIG. 10 shown to be made.
  • FIG. 15 shows schematically in plan view a knitting machine 2 in the form of a circular knitting machine, on which two oppositely arranged Vorgarnverzugs- and -verfest Trentsmodule 100 are provided which supply the knitting machine 2 with warped, solidified roving 4d.
  • a distance of up to 1 m between the respective Vorgarnverzugs- and -verfest Trentsmodulen 100 and the circular knitting machine 2 is without Thread storage device possible.
  • the fiber flow accumulating up to the thread formation is systemically combined in a suction channel 84, collected in a system-integrated suction device 8 and periodically eliminated.
  • the knitting machine 16 schematically shows a possible interface design for coupling a circular knitting machine with Vorgarnverzugs- and -verfest Trentsmodulen 100 for forming quasi-virtual threads for the method for producing a knitted fabric on the inventive device 1.
  • the knitting machine 2 which may be, for example, a large circular knitting machine, as a master used, which with at least one Vorgarnverzugs- and solidification module 100, which serves as a spinning unit communicates.
  • An operating unit 16 is preferably provided on the roving warping and consolidation module 100.
  • the knitting machine 2 is operated by a drive 22. A whole series of drives are provided on the roving warp and consolidation module 100.
  • a drive 97 serves as a drive for the input shaft 511 and the intermediate shaft 521 of the drafting 5 and thus a defined delay of the fiber material and for the two transport shafts 32, 33, through which a non-destructive access of the roving 4a to the drafting 5 is made.
  • the input shaft 511 of the pair of input rollers 51 of the drafting system 5 and the intermediate shaft 521 of the intermediate roller pair 52 of the drafting system 5 are fixedly connected to each other with a defined transmission ratio, for example by a toothed belt.
  • the transport shafts 32, 33 are preferably coupled by means of a toothed belt and connected to the said drive 97.
  • Another drive 96 serves as a drive for the output shaft 531 of the drafting device 5.
  • Another drive 98 is the drive for the driven pinch roller 71 and serves for the defined transport of the warped, consolidated roving 4d.
  • a next drive 99 serves as a separate drive for a elastane yarn feed to the drafting device 5, whereby a defined biasing force of the elastic thread 92 is adjustable upon delivery to the drafting device 5.
  • a supply can be made with adjustable speed.
  • the circular knitting machine 2 forms the master process for the electronic coupling of the roving warp and consolidation modules 100 via a control provided in the circular knitting machine.
  • the individual drive 96 of the output shaft 531 of the drafting system 5 communicates with the integrated control of the circular knitting machine.
  • the single drive 97 of the mechanically coupled Drafting input and middle rollers 511, 521 communicate with the drive 96 of the drafting system exit roller 531.
  • the drafting device delay is freely programmable.
  • the coupling ratio between the circular knitting machine 2 and the individual Vorgarnverzugs- and consolidation modules 100 is freely programmable.
  • the drafting input roller 511 drives conveyor rollers for flyers based on mechanical coupling. For the replacement device, a separate drive is provided. A fan for negative pressure generation for system cleanup will switch on after reaching a programmed minimum speed of the circular knitting machine.
  • the coupling ratio applies to the entire speed range, including jog mode and the proportional valves for nozzle control.
  • Vorgarnverzugs- and -verfest Trentsmodul 100 for example, in FIG. 6 represented proportional valves 63 of the spinnerets 61 and 62 controllable.
  • the baffle technology it is advantageous if the baffle technology, the dedusting of the device 1 and the sensors 11, 12, 13, 14, 15 are activated by the roving warping and consolidation module 100.
  • the described method can be carried out.
  • knits mainly of cotton fibers, can be produced.
  • the roving 4a is provided in the form of Flyerlunten or conveyor belts.
  • the roving 4b distorted into a fiber ribbon in the drafting unit 5 is guided by a two-stage spinneret device 6 arranged in series with opposite directions of spin of the spinnerets 61, 62.
  • the spinneret device 6 is located in a section between the drafting system exit rollers 531, 532 and the fiber clamping point provided by the pinch roller pair 7. Through the spinneret 6 takes place a defined fiber consolidation while ensuring a process and fin-dependent voltage between the drafting roller exit rollers 531, 532 and the fiber nip.
  • the achieved fiber consolidation makes it possible to transport the distorted, solidified roving 4d emerging from the pinch roller pair 7 from the nip to the yarn guide 21 over long distances using conventional yarn eyelets and securely at the knitting machine 2 at medium tension to process stitches.
  • a knitting machine 2 as discussed above, for example, a multi-system circular knitting machine can be used.
  • the method is characterized by an independent voltage regulation between the spinneret 6 and the pinch roller pair 7 on the one hand and between the pinch roller pair 7 and the yarn guide 21 on the other hand.
  • the degree of rotation in the thread by the pressure level of the spinnerets 61, 62 and the nozzle geometry of the spinnerets 61, 62 of the spinneret 6 is adjustable.
  • an inelastic thread (core thread) 91 is integrated into the fiber strand formed in the drafting device 5
  • a very low degree of rotation can be set at the spinnerets 61, 62, which ensures a high degree of softness of the spinneret device 6 emergent, warped, solidified Vorgarnes 4c result.
  • an inelastic thread (core thread) 91 is incorporated into the warped, consolidated roving 4c, this leads to an increase in the process stability of the method.
  • elastic auxiliary threads 92 it is also possible to incorporate elastic auxiliary threads 92 in the fiber ribbons.
  • the process can be carried out with a high flexibility, wherein the fiber feed is continuously metered and thus different material qualities can be derived at a constant template.
  • the method can be performed on a device 1 with a relatively small footprint. Also, the investment requirements for such devices 1 and the specific energy requirement is significantly lower compared to conventional technologies with separate processes for surface formation and threading.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Knitting Machines (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Knitting Of Fabric (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP12775845.6A 2011-09-08 2012-09-06 Vorrichtung zur herstellung von maschenware Active EP2753735B1 (de)

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DE102011053396A DE102011053396B3 (de) 2011-09-08 2011-09-08 Vorrichtung und Verfahren zur Herstellung von Maschenware
PCT/IB2012/054599 WO2013035056A2 (de) 2011-09-08 2012-09-06 Vorrichtung und verfahren zur herstellung von maschenware

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DE102013103738A1 (de) * 2013-04-15 2014-10-16 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Streckwerk für eine Strickmaschine
DE102015102267A1 (de) * 2015-02-18 2016-08-18 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Bestückungsanordnung für eine Spinnstrickmaschine
DE102015119039A1 (de) 2015-11-05 2017-05-11 Terrot Gmbh Vorrichtung und Verfahren zur Herstellung von Maschenware
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TWI513869B (zh) 2015-12-21
CN103781951B (zh) 2017-06-20
PT2753735T (pt) 2018-03-20
IN2014CN02526A (enrdf_load_stackoverflow) 2015-08-07
JP2014530300A (ja) 2014-11-17
EP2753735A2 (de) 2014-07-16
CN103781951A (zh) 2014-05-07
ES2660190T3 (es) 2018-03-21
KR20140064932A (ko) 2014-05-28
JP6064285B2 (ja) 2017-01-25
US9371600B2 (en) 2016-06-21
TW201315853A (zh) 2013-04-16
DE102011053396B3 (de) 2012-08-23
WO2013035056A3 (de) 2013-11-14
US20140237984A1 (en) 2014-08-28
KR101945037B1 (ko) 2019-02-01

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