EP3140232A1 - Machine textile servant à la production de mèche et procédé pour faire fonctionner une telle machine textile - Google Patents

Machine textile servant à la production de mèche et procédé pour faire fonctionner une telle machine textile

Info

Publication number
EP3140232A1
EP3140232A1 EP15726287.4A EP15726287A EP3140232A1 EP 3140232 A1 EP3140232 A1 EP 3140232A1 EP 15726287 A EP15726287 A EP 15726287A EP 3140232 A1 EP3140232 A1 EP 3140232A1
Authority
EP
European Patent Office
Prior art keywords
roving
sleeve
during
guide element
braking effect
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
EP15726287.4A
Other languages
German (de)
English (en)
Other versions
EP3140232B1 (fr
Inventor
Petr Haska
Jiri STECH
Robert Mikyska
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3140232A1 publication Critical patent/EP3140232A1/fr
Application granted granted Critical
Publication of EP3140232B1 publication Critical patent/EP3140232B1/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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/62—Slubbing-winding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/006—Traversing guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/10—Tension devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • 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
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/14—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements for preparing machines for doffing of yarns, e.g. raising cops prior to removal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B65H2701/311—Slivers
    • 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

Definitions

  • the present invention relates to a method of operating a textile machine used to make roving, wherein a roving having a protective twist is produced during roving by means of at least one setting agent from a fiber strand fed to the setting agent, wherein the roving produced by the setting agent is prepared by means of a winding device is wound onto a sleeve, wherein the roving is guided during the winding by means of a guide element arranged between the solidifying agent and the sleeve, and wherein the guide element exerts a braking effect on the roving.
  • a textile machine for producing a roving is proposed, wherein the textile machine has at least one solidifying agent, with the aid of which a fiber bond supplied to the solidifying agent
  • Protective rotation can be dispensed, and wherein the textile machine has at least one winding device by means of which the roving is windable on a sleeve.
  • Roving is produced from slivers pretreated (eg doubled) with the aid of stretching and serves as a template for the subsequent spinning process in which the individual fibers of the roving are spun into a yarn, for example by means of a ring spinning machine.
  • a drafting system which is usually part of the corresponding roving
  • the said strength is important to prevent ripping of the roving when winding on a sleeve or during the supply to the downstream spinning machine.
  • the granted protection rotation must be on the one hand so strong that a cohesion of the individual fibers during the individual Auf imaginary.
  • the solidification of the unconsolidated fiber structure described therein is effected by means of a solidifying agent, which causes no rotation, but a spiral looping of a sliver by one or more filament yarns, preferably monofilament Filamentgar- ne, which hold the fiber structure and give it its strength.
  • the spirals of the individual filament yarns can be arranged in the same direction or in opposite directions. Preference is given to two filament yarns, which are arranged in opposite directions or cross over.
  • the roving produced in this way is thus essentially composed of a sliver of parallelized staple fibers and one or more fine-denier filament yarns spirally wound around the sliver.
  • the filament yarn may be applied to small diameter small coils.
  • the filament yarn is then withdrawn from the fixed bobbin and pulled along with the fiber strand through the bobbin axis, wherein the fiber structure of Filament yarn is wound and the number of withdrawn from the coil windings corresponds to the number of applied to the fiber structure convolutions.
  • the binding point should be determined by a suitable thread guide.
  • WO 2009/086646 A1 Another method of producing roving is described in WO 2009/086646 A1, the method comprising the following steps: 1) providing a fiber composite in the form of two, preferably untwisted, fiber ribbons, 2) imparting S and Z rotations over alternating ones Areas of the two slivers wherein portions of S and Z turns on the respective sliver are separated by non-rotating portions; 3) merging the two slits provided with S and Z turns into a roving, the two slivers due to their backward twisting tendency automatically twist together.
  • the S and Z rotations can z. B. by means of two elements of the used solidifying agent, which hold the respective sliver clamping, at least one element, preferably both elements, the sliver by a relative movement on its surface transverse to the sliver longitudinal direction on both sides alternately impart opposing rotations. At the same time, the respective sliver is moved in sliver direction.
  • the S and Z rotations can also be generated by means of an aerodynamic, in particular pneumatic, process.
  • the alternating S and Z turns are also interrupted by changing areas without rotation.
  • the two slivers provided in the same way with S and Z turns are finally brought together in the so-called merging point.
  • the slivers begin to spin automatically, ie they wrap around each other. This so-called fraen maintains the S and Z rotations in the individual slivers, so that a self-stabilizing two-component roving arises.
  • the areas without rotation in the first sliver should be arranged longitudinally offset to the areas without rotation in the second sliver, so that never two areas without rotation of the first and second sliver in the resulting roving adjacent to each other, since the strength of the roving substantially of the phase angle of the areas without rotation of the two slivers depends.
  • the rovings are therefore, as described above, always brought together with the aid of the solidifying agent so that their areas are out of phase without rotation.
  • the roving produced in this way finally has a higher strength compared to a non-twisted fiber composite, which is ultimately sufficient to wind the roving without Benedictverman on a spool and unwind from this again.
  • the object of the present invention is therefore to regulate the pulling force acting on the roving in such a way that reliable winding without the mentioned looping succeeds, whereby it should also be ensured that the roving does not tear during winding owing to the tensile force acting on the roving.
  • the roving is now guided during winding onto a sleeve by means of a guide element arranged between the solidifying agent and the sleeve, the guide element exerting a braking effect generated by friction between the roving and the guide element on the roving (the braking effect is generally necessary to to gradually reduce the tensile force exerted by the rotating sleeve on the roving, thus preventing ripping of the roving between the sleeve and the solidifying agent or sleeve and drawing unit).
  • the braking effect during operation of the textile machine is adapted to be brought into contact with a, preferably empty, sleeve during a starting operation during which the roving leaving the solidifying agent and / or during a sleeve change during which an exchange of a bespulten sleeve is done by an empty sleeve, is less than during a lying between the starting process and the sleeve change normal operation, during which the roving is wound on the sleeve until a certain degree of filling is reached.
  • the roving is braked relatively strongly by the guide element during said normal operation (ie during the winding process between the starting process and the tube change), a correspondingly high tensile force is required to pull the roving over a corresponding guide surface of the guide element and finally to the Wind up the coil.
  • the roving can therefore be correspondingly tightly wound on the sleeve, resulting in a compact package construction.
  • the necessary tensile force is preferably transmitted through the rotating sleeve on the roving, the sleeve should be equipped with a suitably sized sleeve drive. As a result, the high braking effect during winding thus ensures that the roving can be wound under tension on the sleeve after leaving the solidifying agent.
  • the adaptation according to the invention of the braking effect therefore makes it possible to pull the roving over the guide surface of the guide element during the starting and sleeve changing operation with a comparatively low tensile force, so that, for example, a vacuum-operated suction unit can be used for this purpose.
  • the tensile force acting on the roving can be increased after completion of the respective start or sleeve changing operation by increasing the braking effect of the guide element, so that the roving can be wound on the sleeve with the desired tension.
  • solidifying agent can be designed differently.
  • the solidifying agent is suitable for producing the roving in the manner described in the above-mentioned publications WO 2009/086646 A1 and DE 24 47 715 A1.
  • the textile machine is designed as an air-spinning machine and the solidification agent as an air-spinneret, by which the protective rotation of the roving, as described above, is produced with the aid of fluidized-air flows (a section of a corresponding textile machine designed as an air-spinning machine is described by way of example in the description of the figures).
  • the braking effect is changed by reducing or increasing the contact area over which the roving is in contact with the guide element.
  • the contact surface should in this case at least partially deviate from a flat surface and, for example, be arched or curved, since the enlargement of the contact surface would not lead to an increase in the friction between the contact surface and roving and thus not to an increase in the braking effect on a flat surface.
  • the guide element should also have guide portions which guide the roving in such a way that it passes the guide element on a predetermined path.
  • the guide element (s) may comprise, for example, elevations and / or recesses which guide the roving accordingly.
  • the guide element is wrapped by the roving over a wrap angle, wherein the braking effect is changed by changing the wrap angle.
  • the guide element preferably has a guide surface, which is formed by a surface section of a z. B. round or oval guide rod is formed.
  • the guide element can be entwined less or more than once by the roving during a start or sleeve changing operation as well as during normal operation of the textile machine.
  • the amount of braking action is ultimately related directly to the number of wraps, which of course does not have to be integer.
  • the winding direction does not have to be uniform.
  • the roving it would be possible for the roving to wrap around the guide element in a first region in a first winding direction, while an opposite direction of winding is present in the remaining region.
  • the braking effect caused by the friction between roving and guide element can finally be influenced by winding or unwinding of the roving on the guide element, wherein a winding has an increase in the braking effect and vice versa.
  • the winding and unwinding can be done by rotating the guide element or individual sections thereof, wherein the guide element may comprise a gripper which guides the roving, wherein only the gripper has to be rotated about an axis of rotation in order to effect the desired change of the wrap angle.
  • the wrap angle during the winding process at least temporarily has an amount which is between 400 ° and 2000 °, preferably between 500 ° and 1800 °, particularly preferably between 600 ° and 1600 °.
  • an amount of over 360 ° means that the guide element is wrapped more than once by the roving.
  • a wrap angle of 540 ° is equal to 1.5 turns
  • a wrap angle of 720 ° means two turns, and so on. If the value is between the above amounts, it is ensured that the roving will have a relatively high tensile force over the guide surface of the roving Guide element must be pulled and this is applied before winding on the sleeve with a relatively high tensile stress. The result is the desired compact coil with closely spaced roving.
  • the wrap angle during the starting process and / or the sleeve change at least temporarily an amount that is between 50 ° and 1000 °, preferably between 75 ° and 720 °, more preferably between 100 ° and 500 °
  • the braking effect is relatively low in this case, in contrast to normal operation, so that the roving (at least at the beginning of the starting process and / or a sleeve replacement is not in contact with the sleeve and therefore can not be pulled over this also on the guide surface of the guide element ) can be moved by means of an air flow.
  • the air flow is preferably generated by a suction unit, which sucks the roving produced by the solidifying agent until it is caught by the sleeve and wound by its rotation.
  • a tensile stress acts on the section of the roving in contact with the guide element, the braking effect being adjusted such that the average amount of said tensile stress during the winding process is at least twice, preferably at least four times, particularly preferred at least eight times, higher than during the starting process and / or during the sleeve change. If the amount is in the stated range, the roving during the start or sleeve change process with only low pulling force are pulled over the guide surface, wherein the higher braking effect during normal operation ensures that said tensile force must be correspondingly high, resulting in a tight winding of the roving.
  • the sleeve is wrapped around the roving several times after this time, so that during further winding already the necessary tensile force can be transferred to the roving in order to pull it despite increased braking action on the guide surface of the guide element can.
  • the braking effect can be increased abruptly or gradually, for example by increasing the wrap angle of the roving in the region of the guide element. During normal operation, the braking effect should eventually remain constant, of course, changes are not excluded.
  • the braking effect is increased, while a first to 600th winding, preferably during a first to 300ste winding, more preferably during a first to 100ste turns of the roving is wound on an empty shell.
  • the braking effect in this case is not increased as a function of time, but the number of turns.
  • the number can be determined by means of a corresponding sensor which determines the number, for example, from the rotational speed of the sleeve.
  • the braking effect during the winding process at least 0.01 seconds, preferably at least 0.5 seconds, more preferably at least 1 second, and / or a maximum of 20 seconds, preferably a maximum of 10 seconds, more preferably a maximum of 5 seconds, before the beginning of an upcoming Sleeve change is reduced.
  • the roving is thereby wound relatively tightly on the sleeve, so that the volume of the finished coil is relatively small compared to the wound-up Vorgarnmenge.
  • the roving at the beginning of a winding operation on the sleeve thus has a lower tensile stress than that after completion of the startup process and / or sleeve replacement mecanicspulte roving. In return, however, the risk that the roving breaks in the above sections outside of normal operation, significantly minimized.
  • the traversing is preferably carried out in a direction parallel to the axis of rotation of the sleeve direction.
  • the preparation of the roving is not interrupted during the sleeve change, wherein the roving produced by the solidifying agent is at least as long wound on the sleeve before the sleeve changed sleeve replacement until it, due to the sleeve replacement, with an empty Sleeve comes into contact.
  • the change of the sleeves can be done for example by means of a rotating carrier having at least two sleeve positions. If one of the sleeves is adequately sprinkled with roving, the carrier is rotated until the full sleeve located in the first sleeve position has reached the area where it was rifled with roving.
  • the roving is guided continuously during the sleeve change with the aid of the guide element.
  • the roving between solidifying agent and sleeve is continuously braked, so that it can be wound under a certain tension on the respective sleeve.
  • the tension can in turn be varied according to the above description, so that the braking effect can be adapted to the current status of the winding process.
  • the textile machine according to the invention is characterized in that it has a control which is designed to operate the textile machine in accordance with one or more of the aspects described so far or below.
  • it comprises a guide element which is placed between the solidifying means of the textile machine and a winding device and which is designed to brake the roving when passing the guide element.
  • the guide element preferably comprises an elongate guide section which can be looped around by the roving.
  • a gripper should be present, with the help of which the number of wraps can be influenced.
  • the gripper could be rotatable about an axis of rotation and comprise a gripping portion to grip the roving and to be able to wind around the guide portion when rotating the gripper.
  • Figures 1 to 3 a section of a starting process on a textile machine in
  • Figure 4 is a plan view of a section of a textile machine in the form of a
  • FIG. 5 shows a side view of a detail of a textile machine in the form of an air-spinning machine
  • FIG. 6 shows the view according to FIG. 4 with a changed wrap angle
  • Figure 7 is a rear view of a guide element of a textile machine in
  • FIGS 8 to 10 the view according to Figure 4, each with changed wrap angle and changed position of the guide element.
  • Figures 1 to 3 show a schematic view of a section of a textile machine according to the invention in the form of serving as an example of such a textile machine air-spinning machine, which serves to produce a roving 1, at different times of a startup process.
  • the air-spinning machine can comprise a drafting system 16 with a plurality of corresponding drafting rollers 17 (only one of the drafting rollers 17 is provided with a reference numeral for reasons of clarity), which is supplied with a fiber structure 3, for example in the form of a doubled conveyor belt.
  • the air spinning machine shown in principle comprises a spaced apart from the drafting 16 solidifying agent in the form of an air-jet nozzle 2 with an internal, known from the prior art and therefore not shown, swirl chamber and also known from the prior art and therefore not shown Garn Strukturselement.
  • the fiber structure 3 or at least part of the fibers of the fiber composite 3 is provided with a protective rotation.
  • the air-spinning machine may comprise a take-off unit 4 with preferably two take-off rolls 18 for the roving 1 (the take-off unit 4 is not absolutely necessary).
  • a take-off unit 4 downstream winding device 5 is present, which in turn should comprise at least one sleeve drive 6 and one associated with the sleeve drive 6 in connection and known in principle sleeve receptacle, with the help of a sleeve 7 fixed and the sleeve drive. 6 is displaceable in a rotary motion.
  • the winding device 5 may also comprise two or more sleeve receptacles, so that in addition to a receptacle for a sleeve 7, which is currently bespult in the operation of the air-spinning machine, one or more further recordings for empty sleeves 7 may be present. If the first sleeve 7 bespult, so there is a sleeve change, in which the spooled sleeve 7 is replaced by an empty sleeve 7, so that the winding process 5 can ultimately be continued without interrupting the roving production.
  • the air-spinning machine shown as an example of a textile machine according to the invention now works according to a special air-spinning process.
  • the fiber structure 3 is guided in a transport direction T via an inlet opening, not shown, into the swirl chamber of the air-jet nozzle 2.
  • a protective rotation d. H.
  • at least a part of the fibers of the fiber composite 3 is detected by a vortex air flow, which is generated by appropriately placed air nozzles.
  • a part of the fibers is in this case pulled out of the fiber structure 3 at least a little bit and wound around the tip of a protruding into the vortex chamber Garn avoirselements.
  • the fibers of the fiber composite 3 are withdrawn from the vortex chamber via an inlet mouth of the yarn formation element and a withdrawal channel disposed within the yarn formation element and adjoining the inlet mouth.
  • the free fiber ends are pulled on a spiral path in the direction of the inlet mouth and loop as Umwindefasern to the centrally extending core fibers - resulting in the desired protective rotation having roving. 1
  • the roving 1 has by the only partial rotation of the fibers a delaying ability, which is essential for the further processing of the roving 1 in a subsequent spinning machine, such as a ring spinning machine.
  • a subsequent spinning machine such as a ring spinning machine.
  • conventional air-spinning devices impart such a strong rotation to the fiber structure 3 that the necessary distortion following the yarn production is no longer possible. This is also desirable in this case, since conventional air spinning machines are designed to produce a finished yarn, which should usually be characterized by a high strength.
  • FIGS. 1 to 3 A part of a possible starting process is shown in FIGS. 1 to 3.
  • a fiber strand 3 is supplied by starting the drafting system 16 in the air-spinning nozzle 2.
  • the above-described roving is produced, in which the fiber structure 3 receives a protective rotation.
  • the roving 1 leaves the air-jet nozzle 2 via an outlet opening (not shown in the cited figures) and is detected by the air flow of a suction unit 8.
  • the suction unit 8 preferably has a suction nozzle 13 with a suction opening 9, via the air and thus also the emerging from the air-jet nozzle 2 roving 1 on or is sucked. In this stage shown in FIG.
  • the roving 1 produced by the air-jet nozzle 2 thus leaves the air-jet nozzle 2 and is sucked into the suction unit 8 via the suction opening 9, the delivery speed of the air-spinning nozzle 2 preferably corresponding to the delivery speed prevailing after the starting process or only slightly smaller than this one is.
  • Drawframe 16 active air-jet nozzle 2 and, if present, active (i.e., a roving 1 withdrawing from the air-jet nozzle 2) take-off unit 4, so that a particularly high efficiency of the air-spinning machine shown can be ensured.
  • an indicated control 15 is provided, which is in operative connection with the described elements of the air-spinning machine to perform, inter alia, said starting process.
  • the controller 15 may be present per spinning station of the air-spinning machine. It is also conceivable that a controller 15 is responsible for several spinning stations.
  • the suction unit 8 is moved into a transfer position (preferably the suction pipe 13 is pivoted about a pivot axis 14), in which the suction opening 9 and thus also a portion of the roving 1 (which, moreover, is still from the air-jet nozzle 2 is supplied) is in the region of the sleeve surface - a contact between sleeve 7 and roving 1 exists in this Stadi- preferably not yet.
  • the traversing unit 10 While the suction unit 8 assumes its position shown in FIG. 2 (or shortly thereafter), the traversing unit 10 is brought into the position indicated schematically in FIG. 3, in which the roving 1 is grasped and guided by the traversing unit 10.
  • the traversing unit 10 moves the roving 1 in this case in the vicinity of the sleeve 7 or causes a direct contact between sleeve 7 and roving 1, so that the roving 1 (preferably under the action of corresponding rough surface portions of the sleeve 7) is detected by the sleeve 7.
  • a separation unit 11 is activated, which comprises, for example, a movable (preferably pivotable) separation arm 12.
  • the separation unit 11 is in this case brought into contact with the roving 1, preferably with the portion thereof, which is located between the traversing unit 0 and suction opening 9, in this moment there is a local deceleration of the roving 1 in the area associated with the separation unit 11 comes into contact, so that the roving 1 finally tears between sleeve 7 and separation unit 11, as it continues to be wound by the rotating sleeve 7, d. H. with a tensile force is applied.
  • the roving 1 further supplied by the air-jet nozzle 2 is finally continuously wound onto the sleeve 7, wherein the traversing unit 10 by a movement in the direction of the axis of rotation 24 of the sleeve 7 ensures that the roving 1 evenly on the sleeve 7 is wound up.
  • the air spinning machine is finally in its normal, following the starting process, normal operation, in which the sleeve 7 is spooled with roving 1 until the desired Spool size is reached.
  • the roving 1 by means of a Guiding element 23 is guided, wherein the guide element 23 between the air spinneret 2 and the sleeve 7 is arranged.
  • the guide element 23 is located between the sleeve 7 and the air spinneret 2 downstream in the transport direction T trigger unit 4 and is for example part of the traversing unit 10.
  • the roving 1 is braked by means of the guide member 23, ie the roving 1 is so on the guide element 23 or a guide surface of the same passes, that the friction between the guide member 23 and the roving 1 exerts a braking effect on the roving 1.
  • the reason for the braking according to the invention is the following: If the roving 1 after passing through the air-jet nozzle 2 or any downstream trigger unit 4 detected directly from the rotating sleeve 7, so would act on the roving 1, a tensile force that lead to the immediate rupture of the roving 1 would, since it has only a low tensile strength compared to a conventional yarn.
  • the tensile force generated by the rotating sleeve 7 can pass over the guide surface of the guide element 23 and the associated guide surface with the roving 1 Friction between roving 1 and guide surface are gradually reduced.
  • the tensile force acting on the roving 1 between Vietnamesespinndüse 2 and guide member 23 is significantly smaller than between the guide member 23 and the sleeve 7.
  • the guide element 23 is located on the sleeve 7 and the outer layer of the already roving roving 1, the roving 1 can absorb the high tensile force generated by the rotating sleeve 7 without tearing, since the fiber length of the roving 1 is usually longer than the distance between the guide member 23 and the sleeve 7 or said outer roving ,
  • the roving 1 can finally be wound on the sleeve 7 with a relatively high tensile stress without the risk of it tearing.
  • the guide element 23 initially shows FIGS. 4 and 5. It is therefore conceivable that the traversing unit 10 has a parallel to the axis of rotation 24 the sleeve (s) 7 located in the winding device 5 comprises a reciprocating arm which can be moved to and fro and at the same time constitutes the guide element 23.
  • the guide element 23 preferably has a, for example, rod-shaped wrap-around section 20 and a front guide section 19 for the roving 1.
  • FIG. 4 now shows a possible course of the roving 1 coming from the air-jet nozzle 2 during the starting process, which still is sucked in by the suction unit 8 at this point in time.
  • the roving 1 is in this case guided in a guide groove 22 of the guide portion 19 (see Figures 5 and 7) and wraps around the wrap-around section 20 slightly so that only a small braking force acts on the roving 1. That the braking effect is not too high, is crucial at this stage, since the low tensile force caused by the air flow of the suction unit 8 would not be sufficient to pull the roving 1 over the guide surface of the guide member 23 (the guide surface is in Incidentally, the surface of the guide member 23 which is directly in contact with the roving 1 in each case).
  • FIG. 7 shows a view in the direction of the arrow shown in FIG. 6.
  • the braking effect exerted on the roving 1 by the guide element 23 results, on the one hand, from the looping around of the looping section 20.
  • the braking effect is also produced by the Looping of the gripper 21 increases, since for the height of the frictional force acting on the roving 1, only the wrap angle of a surface, but not the radius of curvature thereof ausschlagge- is bend.
  • the total wrap angle ⁇ is therefore composed of the wrap angle a1 shown in FIG. 7 and the wrap angle in the region of the gripper 21 (and possibly further wrap angles of additional looped surface sections of the guide element 23).
  • the actual wrap angle ⁇ in Figure 7 is therefore higher than the designated angle al
  • Figure 8 shows the stage in which the guide member 23 rests against the sleeve 7 and thus the roving 1 is brought into contact with the sleeve 7, as indicated in Figure 3 (as already mentioned, the guide member 23 is preferably part of in the figures 1 to 3 schematically illustrated traversing unit 10).
  • the air-spinning machine comprises, for example, a separating unit 11 shown in FIGS.
  • the braking effect is reduced by reducing the wrap angle ⁇ again and replaced the bespulte sleeve 7 without interrupting the roving against an empty sleeve 7.
  • the braking effect can be increased again by increasing the wrap angle ⁇ a new sleeve change is pending.

Landscapes

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

Abstract

L'invention concerne un procédé pour faire fonctionner une machine textile qui sert à la production d'une mèche (1), une mèche (1) présentant une torsion de protection étant préparée pendant la production de mèche à l'aide d'au moins un agent de solidification constitué d'un composite fibreux (3) amené à l'agent de solidification, la mèche (1), produite par l'agent de solidification, étant enroulée sur un manchon (7) au moyen d'un dispositif d'enroulement (5), la mèche (1) étant guidée pendant l'enroulement au moyen d'un élément de guidage (23) disposé entre l'agent de solidification et le manchon (7), et l'élément de guidage (23) exerçant une action de freinage sur la mèche (1). Selon l'invention, l'action de freinage pendant le fonctionnement de la machine textile est adaptée de telle sorte que, pendant une opération de démarrage, au cours de laquelle la mèche (1) quittant l'agent de solidification est amenée en contact avec un manchon (7), de préférence vide, et/ou pendant un changement de manchon au cours duquel est effectué un remplacement d'un manchon chargé (7) par un manchon vide (7), est inférieure à l'action de freinage pendant une opération d'enroulement entre le début de l'opération et le changement du manchon. En outre, l'invention concerne une machine textile, servant à la production d'une mèche (1), qui comprend au moins une commande qui est conçue pour faire fonctionner la machine textile conformément au procédé de l'invention.
EP15726287.4A 2014-05-08 2015-04-17 Machine textile servant à la production de mèche et procédé pour faire fonctionner une telle machine textile Active EP3140232B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00698/14A CH709607A1 (de) 2014-05-08 2014-05-08 Verfahren zum Betrieb einer Textilmaschine zur Herstellung von Vorgarn, sowie Textilmaschine hierzu.
PCT/IB2015/000519 WO2015170157A1 (fr) 2014-05-08 2015-04-17 Machine textile servant à la production de mèche et procédé pour faire fonctionner une telle machine textile

Publications (2)

Publication Number Publication Date
EP3140232A1 true EP3140232A1 (fr) 2017-03-15
EP3140232B1 EP3140232B1 (fr) 2020-05-06

Family

ID=53276193

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EP15726287.4A Active EP3140232B1 (fr) 2014-05-08 2015-04-17 Machine textile servant à la production de mèche et procédé pour faire fonctionner une telle machine textile

Country Status (6)

Country Link
US (1) US10533267B2 (fr)
EP (1) EP3140232B1 (fr)
JP (1) JP6762929B2 (fr)
CN (1) CN106460245B (fr)
CH (1) CH709607A1 (fr)
WO (1) WO2015170157A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709605A1 (de) * 2014-05-08 2015-11-13 Rieter Ag Maschf Textilmaschine zur Herstellung von Vorgarn sowie Verfahren zum Betrieb einer entsprechenden Textilmaschine.
EP3425092B1 (fr) * 2017-07-06 2020-05-13 KARL MEYER Technische Textilien GmbH Dispositif et procédé pour etaler un faisceau de fibres
RU208488U1 (ru) * 2021-10-15 2021-12-21 Олег Юрьевич Беляев Устройство для заправки нитью ровинга соосных катушек блока формирования периодического профиля композитной арматуры

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US252018A (en) * 1882-01-10 Tension for grain-binders
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DE2447715C3 (de) 1974-10-07 1978-09-07 Hoechst Ag, 6000 Frankfurt Vorgarn und Verfahren zu dessen Herstellung
US4023342A (en) * 1975-05-16 1977-05-17 Erwin Schenkel Ring spinning or twisting process
JPS6056817B2 (ja) 1981-10-13 1985-12-12 村田機械株式会社 紡績糸
GB8611073D0 (en) * 1986-05-07 1986-06-11 Rieter Scragg Ltd False twist apparatus
DE3641426A1 (de) * 1986-12-04 1988-06-09 Stoll & Co H Fadenfuehrungselement fuer textilmaschinen
CA2005018A1 (fr) 1988-12-12 1990-06-12 Elbert F. Morrison Filature de meche, sous vide
DE19527339C1 (de) * 1995-07-26 1996-10-10 Zinser Textilmaschinen Gmbh Vorspinnmaschine
DE19938433A1 (de) * 1999-08-13 2001-02-15 Schlafhorst & Co W Verfahren und Vorrichtung zum Zentrifugenspinnen
US20020104195A1 (en) * 2000-04-12 2002-08-08 Kiyohiro Tsuzuki Collecting and bundling device for use with fiber-drafting machine
JP2002173839A (ja) * 2000-12-04 2002-06-21 Tsuzuki Boseki Kk 繊維束ドラフト装置における集束装置
DE102004028358A1 (de) * 2004-06-11 2005-12-29 Trützschler GmbH & Co KG Vorrichtung für eine bandbildende Textilmaschine, insbesondere Strecke, Karde o. dgl., mit einer Vliesführung
WO2009086646A1 (fr) 2008-01-11 2009-07-16 Maschinenfabrik Rieter Ag Procédé de fabrication d'une mèche
EP2112258B1 (fr) * 2008-04-25 2016-05-11 Maschinenfabrik Rieter Ag Dispositif et procédé d'enroulement d'une mèche sur une bobine
JP2012127009A (ja) * 2010-12-13 2012-07-05 Murata Mach Ltd 空気紡績装置及び空気紡績装置を備えた紡績機械
EP2726390B1 (fr) * 2011-06-30 2016-07-20 Maschinenfabrik Rieter AG Doigt presseur pour enrouleur de mèche, enrouleur de mèche et procédé d'enroulement de mèche
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CN202968846U (zh) * 2012-12-18 2013-06-05 新昌县儒岙镇隆昌机械厂 一种改良的导纱装置

Also Published As

Publication number Publication date
CH709607A1 (de) 2015-11-13
JP2017517654A (ja) 2017-06-29
JP6762929B2 (ja) 2020-09-30
EP3140232B1 (fr) 2020-05-06
CN106460245B (zh) 2019-04-12
WO2015170157A1 (fr) 2015-11-12
US10533267B2 (en) 2020-01-14
CN106460245A (zh) 2017-02-22
US20170152124A1 (en) 2017-06-01

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