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EP3652368A2 - Procédé pour faire fonctionner un arrangement de filage à jet d'air, canal de guidage de fil et métier à filer à jet d'air comprenant un tel canal de guidage de fil - Google Patents

Procédé pour faire fonctionner un arrangement de filage à jet d'air, canal de guidage de fil et métier à filer à jet d'air comprenant un tel canal de guidage de fil

Info

Publication number
EP3652368A2
EP3652368A2 EP18740594.9A EP18740594A EP3652368A2 EP 3652368 A2 EP3652368 A2 EP 3652368A2 EP 18740594 A EP18740594 A EP 18740594A EP 3652368 A2 EP3652368 A2 EP 3652368A2
Authority
EP
European Patent Office
Prior art keywords
spinning
air
yarn
thread
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18740594.9A
Other languages
German (de)
English (en)
Other versions
EP3652368B1 (fr
Inventor
Michael Mohr
Heinz-Josef Peuker
Chandrassekaran Seshayer
Ralf Siewert
Joachim SOBKOWIAK
Paul Straaten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP3652368A2 publication Critical patent/EP3652368A2/fr
Application granted granted Critical
Publication of EP3652368B1 publication Critical patent/EP3652368B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • B65H51/16—Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines

Definitions

  • the invention relates on the one hand to a method for operating an air spinning device after a spinning interruption.
  • the air spinning device is connected upstream of a drafting device for warping a sliver in the sliver running direction and a downstream thread take-off device for withdrawing a spun by means of the air spinning device thread.
  • the invention relates to a yarn guide for the arrangement between a spinning device and a winding coil generating winding device of a textile machine such as. An air-jet spinning machine and such an air-spinning machine.
  • the Fadenleitkanal is particularly suitable for carrying out the method, wherein the Fadenleitkanal forms a passageway for passing a running between the spinning device and the winding device thread.
  • an air spinning device of an air spinning machine which has an input side arranged nozzle block and a downstream rotatably mounted hollow spinning spindle.
  • the nozzle block has, in addition to air injection nozzles for generating a circumferential air flow on a sliver guide, which acts as a swirl stop for a supplied sliver.
  • the circulating air flow initiated by the air injection nozzles leads during the spinning process in the region of the fiber inlet opening of the nozzle block to a suction flow, which favors the introduction of the distorted in a drafting upstream sliver in the air spinning device. That is, the fiber sliver introduced into the air spinning device reached through the nozzle block to the inlet opening of a spinning during the spinning process, acted upon by a drive belt hollow spinning spindle.
  • the free fiber ends are looped around the cone-shaped spindle head of the spinning spinning spindle by the circulating air flow and wrap spirally around so-called core fibers as the thread is drawn into the spindle. This means that during the spinning process, the core fibers together with the so-called binding fibers form a new thread.
  • a comparable device for producing a thread by means of a circulating air flow is also known from DE 199 26 492 A1.
  • this known air spinning device has no rotatably mounted, but a stationary spinning cone.
  • the sliver to be spun is introduced into the air-spinning device via a sliver guide arranged in a nozzle block and reaches an inlet opening of a stationary hollow spinning cone.
  • the sliver in the region of the inlet opening of the spinning cone is also exposed to a circulating air flow in this known device, which is initiated by air injection openings arranged in the nozzle block.
  • the circulating air stream then places the free fiber ends of the sliver, as known, around the head of the spinning cone and also assists in the insertion of the sliver into the air spinning device.
  • the free fiber ends loop spirally as so-called Umwindefasern to the core fibers and thereby form a thread.
  • the compressed air flows through an injection channel which is integrated into the spinning cone of the air spinning device and opens, for example, into the yarn withdrawal channel of the spinning cone. That is, for the return transport of a thread end by the air spinning device, the injection channel is acted upon with compressed air, which causes in the thread withdrawal channel of the spinning cone directed in the direction of the drafting suction air flow, which arranged the yarn end of a retrieved from the cheese of the job thread to the delivery roller pair of a before the air spinning device Drawframe promotes.
  • An air spinning device for producing a thread by means of a circulating air flow is also described in DE 10 2007 009 074 A1.
  • This air-spinning device also has a hollow spinning cone arranged in a spinning housing and a nozzle block which can be acted upon by compressed air to produce a circulating air flow.
  • the spinning housing of this known air spinning device also has an expansion space, which is provided with an exhaust duct.
  • a compressed air source can be connected to the exhaust air duct, while the nozzle block can be separated from the compressed air supply at the same time.
  • the air-spinning device makes use of the fact that the expansion space for discharging the compressed air introduced via the nozzle block during the spinning process has an exhaust air channel which can additionally be used in the sense of an injector nozzle in connection with the piecing process.
  • the production of such an air spinning device is relatively simple and therefore inexpensive.
  • Air-jet spinning machines which are equipped with the air-spinning devices described above have relatively good performance, in particular when processing synthetic yarn material. kungsgrade on. However, the processes that are used in the known air spinning devices in connection with the re-spinning after a spin interruption in order to re-connect the stretched fiber sliver with the already manufactured thread, could be improved.
  • EP 1 072 702 A2 describes an air-spinning device in which after a spinning interruption the yarn end of the already-spun yarn is transported by means of a transfer arm to the vicinity of the outlet opening of the spinning cone designated as spindle. Subsequently, the thread is sucked by a suction element, which is positioned in the direction of yarn travel in front of the air spinning device. That is, the thread is conveyed against the usual during the spinning process thread running direction through the spinning cone and sucked into the suction element. In the suction element also processed in the drafting system emerging from the drafting sliver is sucked and engulfed in the suction element with the thread. The two entangled fiber elements are then sucked to the final connection in the spinning cone of the air spinning device.
  • Ansetz compiler creates a joint that is thicker than the rest of the thread and thus represents a significant lack of quality.
  • the introduction of the auxiliary thread into the air-spinning device takes place in two stages.
  • the auxiliary thread is first conveyed by means of an injector from the front through the sliver channel of a nozzle block and then introduced in a second stage in the spinning cone of the air spinning device, wherein the introduction of the auxiliary thread into the spinning cone by applying the spinning cone with negative pressure, by a suction means is initiated, which is positioned in the region of the outlet aperture of the spinning cone ".
  • the air-spinning device used for carrying out this method consists of two slidably mounted structural components, which are positioned slightly spaced from each other during the introduction of the auxiliary thread in the sliver channel of the nozzle block and in the insertion of the auxiliary thread in the spinning cone. That is, the auxiliary thread can each be detected manually and easily introduced into the nozzle block or into the spinning cone.
  • the air spinning device is closed and the piecing process started.
  • the warped in the drafting sliver is thereby rolled to the auxiliary thread and transported safely with this through the air-spinning device, with a new thread is created.
  • both the auxiliary thread and the connection point auxiliary thread / sliver are removed again and connected the new thread by means of a yarn splicer almost the same yarn with a recovered from the cross-wound needle upper thread.
  • both the piecing operations of air spinning devices can be made safer, as well as create good quality thread joints.
  • the design effort at the workstations which is necessary in order to be able to advantageously use the method described above, is also relatively high.
  • a method for operating an air-spinning device which is preceded by a drafting device for pulling a sliver in the sliver running direction and a yarn withdrawal device which can be driven by a single motor for withdrawing a yarn spun by means of the air-spinning device, is proposed for this purpose.
  • the yarn end of the spun yarn accumulated on a take-up spool is taken up by means of a suction nozzle and transferred to a yarn end preparation device downstream of the air-spinning device in the direction of sliver running.
  • the proposed method has the particular advantage that it can be used successfully without the need for new, complex developments on the air spinning devices. That is, by the use of long-known and proven components of the textile machinery, such as a single-motor driven thread take-off device, a suction nozzle and / or a holding and Auflöserschreibchen along with a relatively simple and minor modification of a known air spinning device can in a relatively simple manner a reliable, low-cost air spinning device can be created, which allows a smooth implementation of the proposed method.
  • the proposed method can ensure that the sliver / thread connections produced during piecing are qualitatively improved compared with comparable connections of known methods.
  • the accumulated after a spin interruption on the package reel end of the spun or finished thread is received by means of a suction nozzle, which is part of each of the jobs of the air-spinning machine.
  • the yarn end accumulated on the package is received by means of a suction nozzle, which is part of a mobile service unit supplying the numerous work stations of an air-jet spinning machine.
  • the preferred embodiment in which a job-specific suction nozzle is arranged at each workstation, has the advantage that unnecessary waiting times can be reliably avoided by such a construction, which has a positive effect on the efficiency of the air spinning machine. That is, even if it comes to the air-spinning machine at several jobs at the same time to a spinning break, can always retrieved by the suction nozzle of each affected work immediately accrued to the winding package thread to the air spinning device, and then started immediately the piecing process at the workplace.
  • suction nozzle is part of a numerous service points of an air-powered spinning machine, mobile service unit, this results in a very cost-effective device.
  • the drafting system is reversibly driven to allow, if necessary, a correction of the sliver feed or a defined retraction of the fed sliver.
  • a defined feeding of the sliver can be ensured that on the one hand the sliver is relatively carefully introduced to the prepared yarn ends of the thread and connected thereto and that on the other hand after a certain period of time, in other words after a certain running-in phase, the air spinning device again normal working speed can produce.
  • the drives of the drafting system as well as the thread withdrawal device are in a preferred manner independently of each other, for example. Via a central control of the spinning machine or a workstations own controllable, so as to allow an effective and needs-based interaction of these two devices.
  • a Fadenleitkanal proposed for arrangement between a spinning device and a take-up reel-generating winding device of a spinning machine such as an air-spinning machine, wherein the Fadenleitkanal a passage for passing a thread running between the spinning device and the winding device.
  • the yarn guide channel has a plurality of pneumatically actuated channel sections coupled to each other comprising at least a first channel section, a second channel section and a channel connection section disposed between the first and second channel sections, the channel connection section having a junction for supplying compressed air into the thread guide channel for generating a pneumatic overpressure in the channel first channel portion associated with a pneumatic suction effect in the second channel portion.
  • the first channel portion, the second channel portion, and the channel connection portion may be formed of each one or more composite elements.
  • at least one of these sections can be configured in conjunction with at least one further section of the thread guide channel from a one-piece, integral component.
  • at least two of these sections can be formed from a one-piece, integral component
  • the yarn guide channel is designed to be arranged in a defined region between the spinning device and the winding device, in particular between the spinning device and usually one of these downstream yarn withdrawal devices. to be able to, with which at least a portion of a thread running path extending between these devices passes through the Fadenleitkanal.
  • the thread end is preferably passed through the thread guide channel into the region of the outlet opening of the spinning cone using the thread guide channel with the step of transferring the processed thread end into the region of the outlet opening of the spinning cone. transferred.
  • a transfer of the thread end can preferably be done by means of the single motor and reversible driven thread withdrawal device.
  • the junction arranged in the channel connection section advantageously permits, in particular, automatic conduction by means of pneumatic accompanying of a thread end introduced into the thread guide channel.
  • the junction may preferably be configured as a bore or as an annular gap.
  • the inserted thread end can thereby be pneumatically guided either in the direction of the spinning device or in the direction of the winding device.
  • the spinning device is in the yarn running direction, which is identical to the sliver running direction, first the first channel portion, then the channel connecting portion and then the second channel portion downstream.
  • a yarn end introduced into the second channel section can be pneumatically directed via the first channel section in the direction of the spinning device.
  • first the second channel portion, then the channel connecting portion and then the first channel portion be connected downstream.
  • a thread end introduced into the second channel section can thus be pneumatically guided over the first channel section in the direction of the winding device in the course of a splicing operation.
  • a splitting device known at the very least from the technical field of the winding machines can be provided for connecting two yarn ends.
  • a splitting device could be provided on a service unit supplying the work stations of the spinning machine or per workstation.
  • a device for moving the thread end guided from the yarn guide channel to the splicing device such as, for example, a gripper tube also known from the technical field of the winding machines.
  • the yarn guide channel preferably the channel connection section, has a second confluence counteracting the first confluence such that pressurized air enters the yarn guide channel to create a pneumatic overpressure in place of the first channel section in the second channel section along with a pneumatic suction action instead of the first second channel portion is supplied in the first channel section.
  • a first channel section is understood below to mean a channel section of the thread guide channel in which a pneumatic overpressure is generated by supplying compressed air via the associated junction.
  • a second channel section is correspondingly understood to mean such a channel section of the thread guide channel in which a suction effect is produced by supplying compressed air via the associated junction or further junction.
  • One and the same channel section of the thread guide channel accordingly forms a first or second channel section depending on the supply of compressed air via the junction or via the further connection.
  • the first junction and the second junction are designed in a preferred manner demand controlled with compressed air acted upon.
  • a device can be provided, by means of which, in the case of a yarn breakage, it is possible to select as required between a piecing process and a splicing connection.
  • the selection can be set or adjustable in terms of programming or control such that, depending on a location of the sliver or yarn interruption, the piecing process or the splicing connection is carried out.
  • textile-technologically meaningful criteria can be taken.
  • the Fadenleitkanal in particular the channel connecting portion has a Fadenumlenkabrough for deflecting the thread.
  • a junction can be provided in such a way and formed with the yarn guide channel that a passage axis of the junction, which runs perpendicular to a passage plane defined by the mouth opening, is parallel, more preferably congruent, to the yarn guide axis or the passage axis of the first passage section and extends transversely to the yarn guide axis of the second channel portion.
  • the positive pressure and suction effect can thus be effectively generated in the respective first and second channel sections while avoiding or by reducing otherwise disturbing flow vortices.
  • a compressed air connection cooperating with the junction can be easily arranged on the thread guide channel from the outside or can be formed with it.
  • a mounting portion for, in particular detachable, attaching the Fadenleitkanals have on a housing or frame portion of a workstation of the spinning machine.
  • the Fadenleitkanal can be arranged modularly on the spinning machine and according to the further preferred embodiment, if necessary, also replaced or disassembled.
  • the attachment portion forms a housing for receiving at least the Fadenumlenkabitess or is arranged on such a housing.
  • the Fadenleitkanal can be made more compact.
  • the housing may also have the compressed air connection associated with the junction or the further connection.
  • the housing can accommodate the spinner device in the direction of yarn travel closest channel portion of Fadenleitkanals, whereby additional sealing measures such as. O-rings or the like can be reduced and the yarn guide channel itself structurally simpler ausgestaltbar.
  • a Fadenendvorpungs worn is provided with at least one holding and Auflöserschreibchen for preparing the yarn end, wherein the holding and Auflöserschreibchen is arranged or formed at one of the package upstream end of Fadenleitkanals.
  • Holding and Auflöserschreibchen are well known, which is why a detailed description of the configuration of these can be omitted below.
  • the thread end can first be dissolved or pre-treated before entering the channel connecting section by means of the holding and dissolving tube. rides and then passed in the direction of the spinning device in the already dissolved or prepared state.
  • the at least one holding and dissolving tube forms a channel section of the thread guide channel, in particular the second channel section.
  • the junction can be arranged in a further preferred manner adjacent to the holding and Auflöserschreibchen. This allows a compressed air connection, which would be provided only for supplying compressed air for dissolving or preparing the thread end, can be saved. Because by means of the junction can be made possible on the one hand the threading of the thread end in the holding and Auflöserschreibchen associated with the dissolution or preparation of the thread end and on the other hand, the pneumatic guiding the prepared thread end on the first channel section in the spinning device.
  • the compressed air supply can be regulated automatically in a preferred manner, to automatically provide the possibly different for the dissolving process and Fadenleitvorgang required compressed air intensity.
  • a compressed air sensor for detecting the prevailing compressed air intensity may be suitably arranged.
  • one end of the yarn guide channel near the spinning device is nozzle-like or adjoins a nozzle-like element.
  • the nozzle-like end of the yarn guide channel can, according to a preferred embodiment, be formed by the corresponding end of the channel section which is closest to the spinning device in the thread running direction.
  • the nozzle-like element may preferably be designed such that the nozzle-like element forms an insert element, which is more preferably non-destructively insertable and removable at Fadenleitkanalende.
  • a suitable nozzle end can be used for the defined pneumatic guiding of the thread end in the direction of the spinning device without having to exchange the thread guide channel per se.
  • the spinning device is near the end of Fadenleitkanals or the nozzle-like element spaced from a funnel entrance leading to the spinning device Fadenleittrichters, wherein the distance is selected such that the spinning end of the yarn guide channel or the nozzle-like element leaving thread end by means of the compressed air generated in the channel connecting portion at least in the hopper entrance is conductive.
  • the compressed air accompanying the thread end can therefore be suitable in its thickness when leaving the thread guide channel and before entering the area of the spinning device attenuated or controlled.
  • the funnel entrance in the direction of the spinning device is followed by at least one further thread passage whose thread passage entrance is arranged at a distance from an exit of the funnel exit following the funnel entrance in the direction of the spinning device.
  • an air-spinning machine comprising an air-spinning device for spinning a yarn from a fed sliver, a single-motor driven yarn withdrawal device for drawing the yarn from the air-spinning device, and a winding device for winding the spun yarn.
  • the air-jet spinning machine furthermore has a yarn guide channel according to one of the preferred embodiments described above, wherein the yarn guide channel is arranged between the air-spinning device and the downstream winding device, in particular between the air-spinning device and the yarn take-off device which can be driven in single motor by the winding device.
  • the thread withdrawal device is additionally reversibly drivable for supplying the thread in the direction of the air spinning device and designed to be controlled accordingly.
  • the thread withdrawal device can be configured by a single motor driven winding device.
  • FIG. 1 is a front view of an air-spinning machine with workstations, which have for supplying their air-spinning device in each case a workignéeigne suction nozzle and a Fadenendvorpungs liked,
  • FIG. 2 in front view an alternative embodiment of an air-spinning machine with
  • a mobile service unit having a suction nozzle for receiving a yarn that has accumulated on the cross-wound bobbin and a yarn end preparation device,
  • FIG. 3 shows schematically, in section, an air-spinning device during the spinning operation, 4 the air spinning device according to FIG. 3 during the piecing process, FIG.
  • Fig. 5 is a Fadenleitkanal according to an embodiment, which in a like in
  • Fig. 7 shows the Fadenleitkanal shown in Fig. 6 in a cut perspective
  • FIG. 1 shows schematically in front view a textile machine usually producing a package 9, in the present case an air-spinning machine 1.
  • Such textile machines 1 have between the machine end side arranged machine frames 13A, 13B a plurality of jobs 2. These workstations 2, which are arranged in series next to one another and are generally identically designed, are also known as spinning stations. At each of the jobs 2 a sliver can 3 is positioned, which is equipped with a supply of master material, for example with sliver 25.
  • the work stations 2 furthermore each have a drafting device 4, an air-spinning device 5, a thread take-off device 6, a yarn cleaner 7 and a thread-changing device 8, which ensures that the yarn 36 spun or manufactured in the air-spinning device 5 from the fiber strip 25 intersecting layers is wound on a package 9.
  • a drafting device 4 an air-spinning device 5
  • a thread take-off device 6 a yarn cleaner 7
  • a thread-changing device 8 which ensures that the yarn 36 spun or manufactured in the air-spinning device 5 from the fiber strip 25 intersecting layers is wound on a package 9.
  • so-called cross-wound bobbin 9 is in each case, as usual, held in a (not shown) creel and is rotated by a (also not shown) coil drive.
  • Each of the work stations 2 is also equipped with a suction nozzle 39, which makes it possible to receive a yarn end 37 of a finished yarn 36 accumulated on the cheese 9 after a spinning interruption and to transfer it to a so-called yarn end preparation device 40 arranged in the region of the yarn draw-off device 6.
  • the embodiment of an air-jet spinning machine 1 shown in FIG. 2 differs from the air-spinning machine according to FIG. 1 only in that the spinning stations 2 have neither a workstation's own suction nozzle nor a workstation's own yarn end preparation device, but that the supply of the workstations 2 by a spin interruption by an automatic working, so-called service unit 10 takes place, which is guided on rails 1 1, 12 and along the work stations 2 is movable.
  • the service unit 10 positioned at the relevant job 2 takes with its suction nozzle 39, the thread end 37 of the accumulated after the spinning interruption on the cheese 9 thread 36 and transferred the recorded thread end 37 to a serviceaggregigenigene Fadenendvor washerungs worn 40th
  • the thread end 37 of the thread 36 is then prepared for a subsequent piecing operation.
  • suction nozzle of the service unit may transfer the picked-up thread to a workstation's own yarn end preparation device.
  • FIG. 3 shows a side view and a larger scale of an air-spinning device 5 suitable for carrying out the method according to a preferred embodiment during the normal spinning process.
  • the air-jet spinning device 5 shown in section is preceded by a drafting device 4 for forgiving a sliver 25.
  • a drafting device 4 for forgiving a sliver 25.
  • Faserbandlaufraum R behind the air-spinning device 5 a single motor and reversible drivable yarn withdrawal device 6 is installed, which ensures that the manufactured thread 36 can be transported in the direction of the package 9 and in the opposite direction.
  • a thread preparation device 40 In the area of the thread take-off device 6, a thread preparation device 40, not shown in FIGS. 3 and 4, is additionally arranged, which prepares the thread end 37 of the finished thread 36, which has been retrieved through the suction nozzle 39, for the subsequent piecing process.
  • Fadenendvorkungs wornen 40 are known in principle and relatively extensively described for example in DE 35 18 316 A1 or in DE 102 02 781 A1. As will be explained in more detail later with reference to FIG. 5, such a thread end preparation device 40 has a pneumatically acted upon holding and dissolving tube 31.
  • the air-spinning device 5 consists essentially of a two-part outer housing 14, 15, an expansion housing 16, a nozzle block 17, a sliver guide 18 and a hollow spinning cone 19.
  • the expansion housing 16 forms in conjunction with the front housing part 14 of the outer housing a front annular space 20 which is connected via a pneumatic line 21 to a pressure source 22 and in conjunction with the rear housing part 15 of the outer housing an expansion space 28 is.
  • the annular space 20 is pneumatically connected continuously with at least one Blas Kunststoffdüse 23, which are arranged in the nozzle block 17.
  • the air blowing nozzle 23 is in the region of the inlet opening 35 of the spinning cone "19 directed tangentially to the head 24 of the spinning cone 19 that is established on that a rotating air flow.
  • the spinning cone 19 is preferably made of a highly wear-resistant material, for example a technical ceramic material ,
  • the pneumatic line 21 is equipped with a valve 32, the actuation of which is preferably carried out by a spinning station own control device 38 which is connected via corresponding control lines to the valve.
  • prior art spinning process passes through each stored in a sliver can 3 sliver 25 on its way to the cheese 9, first the drafting 4, where it is strongly warped.
  • the drawn fiber sliver 25 is then transferred into the area of the inlet opening 27 of the air spinning device 5 via the pair of delivery rollers 26 of the drafting system 4 and is sucked into the air spinning device 5 under the influence of a vacuum flow prevailing there.
  • the stretched sliver 25 via the sliver guide 18 and the nozzle block 17 reaches the inlet opening 35 of the hollow spinning cone "19 and is drawn through the forming within the spinning cone 19 yarn 36 into the spinning cone nineteenth
  • the sliver 25 is in Area of the head 24 of the spinning cone '19 exposed to the influence of a rotational flow, which is generated by the exiting the nozzle block 17 air flow.
  • the valve 32 is opened.
  • the sliver 25 is continuously drawn into the hollow spinning cone 19, wherein the edge fibers are helically wound around the core fibers of the sliver 25.
  • the thread 36 produced thereby is pulled out of the air-spinning device 5 by means of the thread withdrawal device 6 and subsequently wound up into a cross-wound bobbin 9.
  • the yarn end preparation device has
  • the receiving housing 47 in turn has an annular space 46, to which a compressed-air line 42 is connected via a pneumatic line 41.
  • a valve 43 is switched on, which is connected via a control line 44, for example, to the (not shown in FIGS. 5 to 7).
  • control device 38 of the workstation 2 is connected.
  • the holding and Auflöserschreib- chen 31 is equipped with at least one tuyere 45, which communicates with the annular space 46 in connection.
  • a thread must first be inserted into a holding and dissolving tube 31 in order to prepare its thread end for a thread joining operation. That is, the yarn 36 retrieved by a suction nozzle 39 from a cheese 9 is provided by the suction nozzle 39 to the yarn end preparing means 40 so as to be pneumatically threaded into the holding and dissolving tube 31.
  • the Fadenendvorberei- processing device 40 may, as indicated by way of example in Fig. 5 to 7, cooperate with at least one cutting device 50 which cuts the retrieved thread 36 as needed.
  • valve 43 In the course of the cutting process, the valve 43 is driven and blown through the blowing nozzle 45 compressed air in the holding and Auflöserschreibchen 31 to thread the cut end of the thread 37 in the holding and Auflöserschreibchen 31 pneumatically or suck.
  • the threaded end of the thread 37 is freed of yarn twist and loose fibers in the holding and dissolving tube.
  • a clamping device can likewise be provided, which clamps the thread in a known manner before the cutting process.
  • the clamping device can be combined with the cutting device in a further preferred manner.
  • the yarn end preparation device 40 is coupled to a yarn guide channel 60 for passing the yarn 36, wherein the yarn guide channel 60 in the fiber belt running direction R between the air spinning device 5 and the Fadenendvor washerungs- device 40 is disposed directly adjacent to this.
  • the sliver running direction R is identical to the running direction of the thread in the spinning operation of the air-spinning machine, in which the thread 36 is spun by means of the air-spinning device 5.
  • the yarn guide channel 60 according to the embodiment shown in FIG. 5 comprises a first channel section 62 and a second channel section 64 with the interposition of a channel connection section 66.
  • the first channel section 62 and the channel connection section 66 are received by a housing 70.
  • the housing 70 has a fastening portion, not shown, for fastening the yarn guide channel 60 to a frame or housing 100 of a workstation 2 of the air spinning machine 1, as shown by way of example in FIG.
  • a first end 64A of the second channel section 64 terminates in the housing 70 sealingly with the interposition of an O-ring 80.
  • a second end 64B of the second channel section 64 terminates sealingly in the receiving housing 47 of the thread end preparation device 40, as shown in FIG Interlayer of another O-ring 80, wherein the second end 64B bears directly against the associated end of the holding and Auflöserschreibchens 31 and forms with this a common channel passage for the thread 36 and the thread end 37.
  • the channel connecting portion 66 includes a Fadenumlenkabexcellent 67 for deflecting the thread 36 between the first 62 and second channel portion 64.
  • the Fadenumlenkabites 67 is configured cross-sectionally arcuate, wherein the protruding into the housing 70 and connected to the channel connecting portion 66 of the end 64A 64 of the second channel section over the a cross-sectionally circular thread deflection section 67 is coupled to a first end 62A of the first channel section 62 connected to the channel connection section 66 for passing the thread 36 between the air spinning device 5 and the thread end preparation device 40.
  • the yarn guide channel 60 thus forms a thread running path partially einhausenden section.
  • an angle of less than 180 °, in the illustrated embodiment, of less than 90 °, is thereby formed between the first 62 and second channel section 64.
  • the Fadenleitkanal 60 is characterized compact form.
  • the attachment portion can be easily provided on one side of the Fadenleitkanals 60, which faces away from the angle enclosing side.
  • the housing 70 further comprises a receptacle for a compressed air connection 72, for example in the form of an injector, via which compressed air via a junction 68 in the first channel section 62 can be supplied to generate pneumatic overpressure, wherein simultaneously creates a suction in the second channel section 64.
  • the junction 68 adjoins the first end 62A of the first channel section 62 and supplies the compressed air in parallel, in particular congruent, to a thread guide axis of the first channel section 62 and transversely to a thread guide axis of the second channel section 64.
  • the thread guide axis is the axis along which the thread is guided in the thread guide channel 60 or in the respective channel sections 62, 64, 66.
  • the second end 62B of the first channel section 62 adjoins a nozzle insert 74 accommodated in the housing 70, which can preferably be inserted and removed in a non-destructively replaceable manner.
  • a nozzle insert 74 accommodated in the housing 70, which can preferably be inserted and removed in a non-destructively replaceable manner.
  • the guided from the first channel section 62 with compressed air yarn end 37 is blown in the direction of a spaced from the output of the nozzle insert 74 opposite hopper entrance 76.
  • the distance between the output of the nozzle insert 74 and the funnel input 76 is unchangeable according to an embodiment relative to each other and according to a further embodiment, in particular variably adjustable, whereby each reducing the intensity of the Yarn end 37 conductive compressed air can be achieved.
  • a portion of the compressed air conducting the yarn end 37 may escape in the space formed between the exit of the nozzle insert 74 and the funnel entrance 76, while the remaining portion directs the yarn end 37 into the funnel entrance 76.
  • the hopper entrance 76 follow in the direction of the air spinning device 5 according to this embodiment, two further yarn passages 77, 78, between each of which further gaps for the escape of a defined portion of the compressed air are formed before the thread end 37 enter the air spinning device 5 against the Fadenband- or thread running direction R. can.
  • the funnel entrance 76 with the intermediate thread passages 77, 78 are held by means of fastening screws 79 between the housing 70 and the air spinning device 5.
  • the air-spinning device 5 and the housing 70 are coupled together.
  • a position of the funnel entrance 76 and / or the intermediate thread passages 77, 78 along the mounting screws can be adjusted variably in an appropriate manner to adjust the proportion of escaping compressed air in the individual sections.
  • the thread or the prepared thread end 37 can be guided in a gentle manner to the air-spinning device 5.
  • the yarn end 37 prepared as described above and transferred to the air spinning device 5 is then connected to the fiber sliver 25 presented by the drafting device 4.
  • the supply of the prepared thread end 37 ends when the prepared thread end 37, as shown in Fig. 4, slightly spaced before the inlet opening 35 of the spinning cone " 19 is positioned within the air spinning device 5.
  • the thread take-off device 6 is a single motor driven, for example.
  • the stepper motor is driven so that by means of detecting the number of steps of the stepping motor, the thread take-off 6 is reversible, ie opposite to the prevailing in the spinning operation yarn withdrawal direction to a defined needs-based return of the Threaded end 37 accompanied by the prevailing in the Fadenleitkanal 60 air flow along the direction of the yarn draw-off device 6 to the air spinning device 5 direction to be able to effect the predetermined position nd of the inlet opening 35 19 a connected to the control device 38 sensor may be provided by means of which the proper positioning of the thread end 37 can be also confirmed the spinning cone.
  • the control device 38 causes a switchover of the valves 32 and 34 such that the nozzle block 17 is again supplied with compressed air.
  • the drafting unit 4, which is also driven by a single motor, and the thread withdrawal device 6 are activated in such a way that a free end of the sliver 25 first comes into contact with the prepared thread end 37 of the thread 36 and swirls the sliver 25 with the prepared thread end 37 of the thread 36 and thereby with one another be connected, that a deductible new thread is formed, which can be deducted defined by means of the thread withdrawal device 6 from the air-spinning device 5.
  • the piecing process thus goes into the normal spinning process.
  • FIG. 6 and 7 show a yarn guide channel 90 according to a further embodiment.
  • This yarn guide channel 90 differs structurally from the yarn guide channel 60 shown in FIG. 5 essentially through the arrangement location of the junction 98.
  • the junction 98 in comparison with the yarn guide channel 60 shown in FIG. 5 is in the holding and dissolving tube 31 in FIG Thread running direction R upstream section arranged.
  • the confluence 98 is designed in the form of an annular gap directed counter to the yarn running direction R, in order to introduce the compressed air to be injected into the yarn guide channel 60 in the direction of the air spinning device 5 or one opposite the direction of yarn travel R.
  • the channel section comprising the junction 98 forms the channel connection section 96 of the yarn guide channel 90.
  • the passage connecting portion 96 includes another annular space 97 which is coupled to the mouth 98 for supplying the compressed air.
  • the annular space 97 is coupled via an opening 48 formed in the receiving housing 47 with a further pneumatic line 92, which ends in a receptacle 49 provided for this receptacle housing adjacent to the opening 48.
  • the channel connecting portion 96 is disposed near the holding and dissolving tube 31 with the interposition of the second channel portion 94.
  • the second channel portion 94 is coupled in this embodiment via an interposed nozzle member 93 with the holding and Auflöserschreibchen 31 for passing the yarn end 37.
  • the channel connection section 96 adjoins the first channel section 92 on a side facing away from the second channel section 94.
  • the first channel section 92 in this exemplary embodiment is therefore structurally identical to the second channel section 64 of the yarn guide channel 60 described with reference to FIG. 5.
  • the first channel portion 92 may be integrally formed with the channel connection portion 96 in an alternative manner.
  • the first channel section 92 is followed in the direction of the air spinning device 5, a housing 70 which is approximately identical to the described in connection with FIG. 5 housing 70 with the Fadenumlenkabêt 67 and the nozzle insert 74 but without the junction 68 and leading to the junction 68 injector 72nd is trained.
  • a housing 70 which is approximately identical to the described in connection with FIG. 5 housing 70 with the Fadenumlenkabites 67 and the nozzle insert 74 but without the junction 68 and leading to the junction 68 injector 72nd is trained.
  • the thread deflection section 67 has a passage closed by a cover element 71, via which the thread deflection section 67 and thus the thread deflection is accessible.
  • Fadenumlenkabitese 67 can be used in the housing 70 or interchangeable provided for the housing 70 via the passage.
  • a fixing of the Fadenumlenkabitess 67 in the housing 70 by means of the cover member 71 take place.
  • the Fadenumlenkabites 67 is in this embodiment, essentially biconic, also known as Diaboloform formed.
  • the configuration of this specifically biconical as well as any other shape of the Fadenumlenkabitess 67 may be suitably selected according to the type of yarn to be guided.
  • the side surfaces of the biconical shape leading to the yarn guide surface section may have a concave or convex curvature in cross-section or, alternatively, may be designed to be of straight cross-section.
  • the width of the thread guide surface section extending perpendicular to the thread deflection direction can be suitably selected to suit the type of yarn to be processed.
  • the radius forming the thread deflection can also be suitably selected for the type of yarn.
  • the housing 70 is also followed by the nozzle insert 74, the funnel entrance 76 and the further thread passages 77, 78 in the direction of the air spinning device 5 in a manner as shown in and described in connection with FIG.
  • FIGS. 5 to 7 shows, by way of example, a yarn guide channel 60 as shown in FIGS. 5 to 7 in the installed state at a workstation 2 of the air-jet spinning machine 1.
  • the deflected execution of Fadenleitkanals 60 according to this embodiment space-saving between the other arranged at the workplace 2 facilities can be placed.
  • the yarn guide channel is even more compact ausgestaltbar according to an embodiment, not shown, for example by the second channel portion with the holding and Auflöserschreib- be combined so that the holding and Auflöserschreibchen the second channel section forms, the junction, for example in the form of an annular gap at the end of the holding and Auflöserschreibchens is positioned or formed in the end of the holding and Auflöserschreib- Chen.
  • compressed air can be supplied via the junction to suck in the one supplied by the suction nozzle 39 end of thread and immediately prepare the thread end 37 or dissolve and on the other hand to guide the prepared end of the thread 37 in the Fadenleitkanal 60 pneumatically.
  • a gentle or less aggressive preparation of the thread end 37 can be achieved.
  • a compressed air connection to be provided only for the dissolution of the thread end 37 can be saved.
  • the housing can be configured as a swivel joint in order to be able to modify the angle enclosed by the thread deflection section as needed to the installation site and / or the installation process.
  • the junction or additionally a further junction in the region of the first channel section may be arranged and configured in such a way that the supply of compressed air takes place transversely to the thread guide axis of the first channel section.
  • the first and second channel sections may extend in different planes so as to ensure a reliable, unimpeded passage of the suction nozzle on the drafting device and on the second channel section for feeding the captured thread end into the area of the yarn end preparation device.
  • an exemplary embodiment comprises a "and / or" link between a first feature and a second feature
  • this can be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment, either only the first Feature or only the second feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un arrangement de filage à jet d'air après une interruption du filage, un canal de guidage de fil ainsi qu'un métier à filer à jet d'air comprenant un tel canal de guidage de fil. Dans le sens de défilement d'un ruban de fibres, un banc d'étirage destiné à étirer un ruban de fibres est monté en amont de cet arrangement de filage à jet d'air, et en aval de celui-ci est monté un dispositif de levée de fil pouvant être entraîné par un moteur unique et destiné à lever un fil filé au moyen de l'arrangement de filage à jet d'air. Selon l'invention, après une interruption du filage, l'extrémité du fil filé, reçue sur une bobine de réception, est prise en charge par une buse d'aspiration et transférée à un dispositif de préparation d'extrémité de fil monté en aval de l'arrangement de filage à jet d'air dans le sens de défilement du ruban de fibres, l'extrémité de fil est traitée dans le dispositif de préparation d'extrémité de fil et ensuite déplacée dans la zone de l'ouverture de sortie du cône de filature, l'extrémité de fil est transportée pneumatiquement jusqu'à l'ouverture d'entrée du cône de filature où elle est ensuite positionnée à l'intérieur de l'arrangement de filage à jet d'air à un écart donné devant l'ouverture d'entrée, le banc d'étirage du poste de travail concerné est mis en marche et le ruban de fibres est transporté à travers un guide de ruban de fibres du bloc de buses dans la zone de l'ouverture d'entrée du cône de filature où son filage commence au niveau de l'extrémité de fil préparée du fil filé.
EP18740594.9A 2017-07-14 2018-07-13 Procédé pour faire fonctionner un arrangement de filage à jet d'air Active EP3652368B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017115939.8A DE102017115939A1 (de) 2017-07-14 2017-07-14 Verfahren zum Betreiben einer Luftspinnvorrichtung, Fadenleitkanal und Luftspinnmaschine umfassend einen solchen Fadenleitkanal
PCT/EP2018/069160 WO2019012143A2 (fr) 2017-07-14 2018-07-13 Procédé pour faire fonctionner un arrangement de filage à jet d'air, canal de guidage de fil et métier à filer à jet d'air comprenant un tel canal de guidage de fil

Publications (2)

Publication Number Publication Date
EP3652368A2 true EP3652368A2 (fr) 2020-05-20
EP3652368B1 EP3652368B1 (fr) 2022-02-23

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US (2) US11753747B2 (fr)
EP (1) EP3652368B1 (fr)
JP (1) JP7101755B2 (fr)
CN (1) CN110892102B (fr)
DE (1) DE102017115939A1 (fr)
PT (1) PT3652368T (fr)
TW (1) TWI770227B (fr)
WO (1) WO2019012143A2 (fr)

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WO2020201936A1 (fr) * 2019-03-30 2020-10-08 Lohia Corp Limited Système et procédé de surveillance de rupture de bande
DE102020104883A1 (de) * 2020-02-25 2021-08-26 Saurer Spinning Solutions Gmbh & Co. Kg Schutzring und Antriebseinrichtung mit einem Schutzring
DE102020108257A1 (de) * 2020-03-25 2021-09-30 Saurer Spinning Solutions Gmbh & Co. Kg Vorrichtung zur Faservereinzelung und Spinneinrichtung umfassend eine solche Vorrichtung
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CN116853899B (zh) * 2023-08-03 2025-01-28 大丰万达纺织有限公司 一种络筒机的除静电清纱装置

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Also Published As

Publication number Publication date
WO2019012143A2 (fr) 2019-01-17
EP3652368B1 (fr) 2022-02-23
US11753747B2 (en) 2023-09-12
CN110892102A (zh) 2020-03-17
US20220178052A1 (en) 2022-06-09
JP2020527197A (ja) 2020-09-03
TW201908555A (zh) 2019-03-01
US11753748B2 (en) 2023-09-12
DE102017115939A1 (de) 2019-01-17
WO2019012143A3 (fr) 2019-03-28
PT3652368T (pt) 2022-05-10
BR112019026870A2 (pt) 2020-06-30
TWI770227B (zh) 2022-07-11
US20200224337A1 (en) 2020-07-16
JP7101755B2 (ja) 2022-07-15
CN110892102B (zh) 2022-04-08

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