EP0223926B1 - Verfahren und Vorrichtung zum Wiederanspinnen eines Fadens in einer Spinnvorrichtung - Google Patents

Verfahren und Vorrichtung zum Wiederanspinnen eines Fadens in einer Spinnvorrichtung Download PDF

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Publication number
EP0223926B1
EP0223926B1 EP86111039A EP86111039A EP0223926B1 EP 0223926 B1 EP0223926 B1 EP 0223926B1 EP 86111039 A EP86111039 A EP 86111039A EP 86111039 A EP86111039 A EP 86111039A EP 0223926 B1 EP0223926 B1 EP 0223926B1
Authority
EP
European Patent Office
Prior art keywords
gap
torsion
component
swirl
injector
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.)
Expired
Application number
EP86111039A
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German (de)
English (en)
French (fr)
Other versions
EP0223926A1 (de
Inventor
Peter Dr.-Ing. Artzt
Kurt Dipl.-Ing. Ziegler (Fh)
Harald Dipl.-Ing. Dallmann (Fh)
Gerhard Prof. Dr.-Ing. Egbers
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.)
Rieter Ingolstadt GmbH
Original Assignee
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0223926A1 publication Critical patent/EP0223926A1/de
Application granted granted Critical
Publication of EP0223926B1 publication Critical patent/EP0223926B1/de
Expired legal-status Critical Current

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Classifications

    • 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 present invention relates to a method for re-spinning a spinning device after a thread break with a pneumatic twist device which has an injector part which is separated by a gap which is connected to the atmosphere from a twist part in which the thread is drawn from the exit side with the aid of negative pressure forth is threaded into the pneumatic swirl device, and a device for performing this method.
  • the thread is sucked from the side facing away from the take-off rollers by means of a suction device through the swirl nozzle brought into a threading position (DE-OSen 3.411.577 and 3.413.894). Only a single nozzle is used for spinning, which does not always lead to satisfactory results with regard to the finished yarn.
  • the object of the invention is therefore to provide a method and a device which allow threading of the thread into the nozzles separated from one another by an air gap in a simple manner with low air consumption.
  • the gap is sealed from the atmosphere before threading the thread, the thread is then threaded into the swirl member against the direction of withdrawal and the gap is released again at the latest when the thread is drawn off.
  • the negative pressure which is applied to the mouth forming the entry side of the swirl element in relation to normal spinning can with all its force be located on the exit side in relation to normal spinning impacting mouth of the swirl organ.
  • the intensity is not impaired as a result of secondary air entering through the gap.
  • the thread is threaded back into the swirl element and combined with the template, which is designed as a sliver or a fuse. The gap is released again before or during piecing, at the latest when the spun thread begins to be drawn off, so that the thread take-off is not impaired.
  • the gap can be sealed off by covering it. It is possible to utilize the movement of the swirl member from its spinning position into a threading position and to seal the gap by moving the swirl member into its threading position. However, an axial movement of the injector nozzle and / or the swirl nozzle can also be provided for this purpose, so that the gap is closed by relative axial movement of the injector nozzle and swirl nozzle.
  • a sealing device is used to carry out the described method, which sealing device can be assigned to the gap between the injector nozzle and the swirl nozzle during the threading phase in order to exclude the penetration of secondary air into the interior of the swirl element during this time.
  • the sealing device is advantageously designed as a diaphragm that can be moved into the gap.
  • the swirl element is assigned an elastic element, by means of which it is held on a stop that fixes the spinning position, while the aperture that can be moved into the gap is designed as a drive device, with the aid of which the swirl element can be transferred to the threading phase.
  • the swirl member can be pivotally mounted and can be sealingly applied to the screen by pivoting about its pivot axis.
  • a stationary screen can thus be provided, to which the gap for sealing covering can be set by moving the swirl element from the spinning position into the threading position.
  • the swirl nozzle and / or the injector nozzle can carry a sleeve-like diaphragm which can be brought into a position covering the gap between the swirl nozzle and the injector nozzle by axial displacement.
  • the suction pipe can be pressed against the inlet side of the swirl element in such a way that the gap between the injector nozzle and the swirl nozzle is closed.
  • the suction pipe presses the elastically mounted injector nozzle against the swirl nozzle or the sleeve-like, likewise elastically mounted sleeve up to the gap between the injector nozzle and the swirl nozzle.
  • the threading of the thread into the swirl element can be carried out in a simple manner with the aid of a relatively low vacuum and thus in an economical manner. Since external air is prevented from being sucked in through the gap between the injector nozzle and the swirl nozzle, the threading negative pressure has a full intensity on the outlet side (with respect to the normal spinning direction) of the swirl element.
  • the spinning device initially described with reference to FIG. 1 has a drafting device 2, a swirl element 3, a take-off device 4, a winding device 5 and a threading device 6 as the most important elements.
  • roller 1 has four pairs of rollers with rollers 20 and 200, 21 and 210, 22 and 220 as well as 23 and 230, straps 222 being assigned to rollers 22, 220.
  • rollers 20 and 200 In front of the rollers 20, 200, between the rollers 20, 200 and 21, 210 and between the rollers 21, 210 and 22, 220 there is a compressor 201, 211 and 221, respectively.
  • a sliver clamping device 202 and 212 are arranged on the rollers 21, 210.
  • the swirl element 3 has an injector nozzle 30 and a swirl nozzle 31, which are each equipped with compressed air openings 300 and 310 for supplying compressed air.
  • the injector nozzle 30 and the swirl nozzle 31 are arranged in a holder 32 which has ring channels 320 and 321, with which the compressed air openings 300 and 310 are connected.
  • the ring channels 320 and 321 are connected via lines 322 and 323 to a vacuum source, not shown.
  • the injector nozzle 30 and the swirl nozzle 31 are arranged at an axial distance from one another, so that a gap 33 remains between them. This gap 33 between the injector nozzle 30 and the swirl nozzle 31 is connected to the atmosphere via a gap 34 in the holder 32.
  • the take-off device 4 has, in the usual way, a driven take-off roller 40 and a pressure roller 41 which cooperates elastically with the take-off roller 40.
  • the winding device 5 has a driven winding roller 50, from which the spool 51, which is mounted in a known manner, is driven.
  • FIG. 1 shows, as the most important elements of the threading device 6, a suction pipe 60 and a sealing device 61, with which the gap 33 between the injector nozzle 30 and the swirl nozzle 31 can be sealed off from the atmosphere.
  • the spun yarn 10 is drawn off from the swirl member 3 by the take-off device 4 and fed to the winding device 5 for winding onto the bobbin 51.
  • a signal is sent in a known manner from a thread monitor, not shown, which causes the two sliver clamping devices 202 and 212 to respond.
  • the fuse 1 is stopped in front of the rollers 20, 200 and 21, 210.
  • the sliver part after these rollers is separated by the rollers 22, 220 and 23, 230 from the stopped sliver part and fed to a suction device, not shown, so that clogging of the swirl member 3 by fiber material no longer drawn off from the swirl member 3 is avoided.
  • the swirl member 3 is brought from its spinning position I into its threading position II.
  • the holder 32 lies against the stop 61 in such a way that it covers the gap 34 which only extends over a partial circumference of the holder 32.
  • the yarn end located on the bobbin 51 is sought and pulled off the bobbin 51.
  • the end of the yarn is then presented to the side of the twist element 3 which forms the exit side 311 during the normal spinning process.
  • the suction tube 6 is brought in front of the side forming the inlet side 301 of the swirl element 3 during the normal spinning process.
  • a negative pressure is now generated in the suction tube 6, while the yarn 10, possibly after a short interruption, is now returned by the bobbin 51.
  • the negative pressure acting in the suction tube 6 has its full effect on the outlet side 311 of the swirl member 3, where the yarn end is located. The yarn 10 is thus sucked through the twist 3 into the suction tube 6.
  • the air required for the spinning process can pass through the gap 33/34 are sucked into the interior of the swirl element 3.
  • the sealing device 61 shown in FIGS. 1 and 2 has an orifice 610 which is mounted in a stationary manner and to which the swirl member 3 is moved by its movement from the spinning position into the threading position II. Details of an exemplary embodiment particularly suitable for this purpose will now be explained in more detail with the aid of FIG. 2.
  • the holder 32 is mounted on a pivot lever 35 which is pivotable about a bearing pin 350.
  • a first stop 36 is assigned to the swirl element 3.
  • the pivot lever 35 is acted upon by a tension spring 351, one end of which is anchored to the pivot lever 35 and the other end of which is anchored to the stop 36.
  • the swirl member 3 is thus normally held by the tension spring 351 in contact with the stop 36, which is designed so that the swirl member 3 resting on it assumes the spinning position I. In this position, the gap 34 is not covered by the stop 36.
  • the pivot lever 35 is connected via a coupling 370 to the armature 371 of an electromagnet 37. If the electromagnet 37 is excited, the swirl member 3 is brought against the action of the tension spring 351 from the spinning position I into the threading position II to bear against the stop 610 designed as a stop, so that in this position the gap 33/34 is sealed from the atmosphere is. After threading the returned yarn 10 into the twist 3, the twist 3 is released again by dropping the electromagnet 37, and this returns to its spinning position I, in which it then bears against the stop 36.
  • the invention is not limited to the embodiments described, but can be modified in a variety of ways, in particular by exchanging features with equivalents or other combinations thereof.
  • Such a modification of the sealing device 61 is explained below with reference to FIG. 3.
  • the gap 33/34 is sealed by covering it.
  • the swirl element 3 as shown in FIG. 2, is acted upon by a tension spring 351 which is anchored in a stationary position at a suitable point.
  • the pivot lever 35 has a second arm 352, which is held by the action of the tension spring 351 in contact with a stationary stop 38 which fixes the spinning position I of the swirl member 3.
  • the sealing device 61 which can be delivered to the gap 34 of the swirl element 3 has an aperture 611, which is simultaneously designed as a drive device for the swirl element 3.
  • the cover 611 is mounted together with the pivot lever 35 on the bearing pin 350, so that when the swirl member 3 is pivoted by pivoting the cover 611, no relative movements between the swirl member 3 and the cover 611 occur.
  • the swirl member 3 In normal spinning operation, the swirl member 3 is in its spinning position I.
  • the diaphragm 611 is in its left (dash-dotted) position (FIG. 3), in which it releases the gap 34.
  • the electromagnet 37 (Fig. 2) is excited, whereupon it. Aperture 611 moved towards the swirl element 3.
  • the diaphragm 611 covers the gap 34.
  • the diaphragm 611 serves as a drive device for the swirl element 3 and transfers it from its spinning position into the threading position II.
  • the threading position II of the swirl member 3 can be determined by appropriate dimensioning of the stroke of the electromagnet 37. However, it is also possible to additionally assign the pivot lever 35 a stop 62 which defines the threading position II of the swirl element 3 (FIG. 3).
  • the pivoting movement of the diaphragm 611 can, if desired, also serve to control the compressed air flow in the swirl element 3.
  • the diaphragm 611 can open or interrupt the lines 322 and 323.
  • the orifice 611 In the left end position in FIG. 3 (shown in dash-dot lines), in which the orifice 611 is lifted off the swirl element 3, the orifice 611 releases the lines 322 and 323, so that the swirl element 3 is pressurized. If a thread break occurs, the screen 611 rests against the twist element 3 and thus also interrupts the compressed air supply to the twist element 3. The compressed air supply to the twist element 3 remains even after threading the yarn 10 into the twist element 3, even if it has returned to the spinning position. interrupted.
  • the compressed air supply to the swirl element 3 is then also released again by returning the diaphragm 611 to its starting position shown in dash-dotted lines.
  • FIGS. 4 and 5 show an embodiment of the threading device 6, in which the injector nozzle 30 and the swirl nozzle 31 are axially movable relative to one another in such a way that they are axially in mutual contact during the threading phase.
  • the swirl nozzle 31 is fixedly mounted in the holder 32, while the injector nozzle 30 can be moved in the axial direction.
  • the injector nozzle 30 and the swirl nozzle 31 point around their spinning bore 302 or 312 around on their mutually facing sides annular recesses 303 or 313 for receiving a compression spring 324.
  • a stop pin 325 is mounted in the holder 32, which extends radially inwards into a longitudinal slot 304 on the outside of the injector nozzle 30 protrudes.
  • This longitudinal slot 304 limits in one direction the maximum extension of the compression spring 324 and thus the movement of the injector nozzle 30 away from the swirl nozzle 31, while in the other direction it is so long that it fits snugly against the facing ends of the injector nozzle 30 and Swirl nozzle 31 allows.
  • sealing rings 326 and 327 are provided between the holder 32 and the injector nozzle 30 on both sides of the ring channel 320.
  • the injector nozzle 30 also carries on its side facing the intake manifold 6 a sealing ring 328 which cooperates with the mouth 600 of the intake manifold 60.
  • a further seal can be provided in one of the two mutually facing ends of injector nozzle 30 and swirl nozzle 31.
  • the suction tube 60 When the swirl member 3 has been brought into its threading position II for threading the returned yarn 10, the suction tube 60 is brought into its thread take-up position in front of the end forming the entry side 301 of the swirl member 3 during the normal spinning process, whereby it lies sealingly against the injector nozzle 30 . However, the suction pipe 60 continues its movement towards the injector nozzle 30 until the compression spring 324 tensions the injector nozzle 30 against the swirl nozzle 31 and thereby closes the gap 33 between them.
  • FIG. 6 Another embodiment of the sealing device 61 is shown in FIG. 6.
  • the holder 32 of the swirl member 3 carries a sleeve-like diaphragm 612 which surrounds the holder 32 in the axial region of the injector nozzle 30.
  • the holder 32 has in its area facing the gap 34 in the axial area of the injector nozzle 30 a radially outwardly extending ring shoulder 340, while the cover 612 on its end facing the outlet side 301 has a radially inwardly projecting ring shoulder 613 which extends to the outer circumference of the holder has, while their inner circumference otherwise corresponds to the outer circumference of the ring shoulder 340.
  • a compression spring 614 is arranged in the space thus created between the annular shoulders 340 and 613.
  • the orifice 612 At its end facing the swirl nozzle 31, the orifice 612 has an external thread 615, onto which a cap 616 is screwed, which engages on the side of the annular shoulder 340 facing the swirl nozzle 31 due to the action of the compression spring 614 on the swirl nozzle 31 which acts on it and thus acts as a stop.
  • the holder 32 has in its area facing the gap 34 in the axial area of the swirl nozzle 31 a radially outwardly projecting ring shoulder 341 with an annular recess receiving a ring seal 342.
  • the diaphragm 612 By the action of the compression spring 614, the diaphragm 612 is held with its cap 616 in contact with the annular shoulder 340 of the holder 32.
  • the suction pipe 60 (see FIG. 2) is delivered to its outlet side 301. This suction tube 60 is pressed so strongly against the diaphragm 612 that it is brought against the action of the compression spring 614 to bear against the ring seal 342 and thereby seals the gap 34 in the holder 32.
  • the gap 33 or 34 has always been closed by the suction pipe 60, this is however not binding. It is also possible to carry out such an axial adjustment of the swirl nozzle 31 or of a sleeve-like diaphragm (similar to 612) surrounding the swirl nozzle 31 in the direction of the injector nozzle, with a suction device (not shown) receiving the yarn 10 from the bobbin 51, for example, as the drive. or another element forming part of the yarn return device. Opposing movements of the injector nozzle 30 and the swirl nozzle 31 or sleeves surrounding these two nozzles 30 and 31 are also possible.
  • the swirl member 3 also does not have to be mounted on a swivel lever 35, but can be swiveled by means of a swivel axis (not shown) attached to the swirl member 3 in such a way that at least its inlet side 301 assumes a threading position II that deviates from the spinning position I. Moving the swirl member 3 in a link-like guide (not shown) can also be provided, if desired.
  • the type of transfer from the spinning position I into the threading position 11 is therefore irrelevant to the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP86111039A 1985-11-21 1986-08-09 Verfahren und Vorrichtung zum Wiederanspinnen eines Fadens in einer Spinnvorrichtung Expired EP0223926B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3541220 1985-11-21
DE3541220A DE3541220C1 (de) 1985-11-21 1985-11-21 Verfahren und Vorrichtung zum Wiederanspinnen einer Spinnvorrichtung

Publications (2)

Publication Number Publication Date
EP0223926A1 EP0223926A1 (de) 1987-06-03
EP0223926B1 true EP0223926B1 (de) 1989-05-31

Family

ID=6286509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111039A Expired EP0223926B1 (de) 1985-11-21 1986-08-09 Verfahren und Vorrichtung zum Wiederanspinnen eines Fadens in einer Spinnvorrichtung

Country Status (9)

Country Link
US (1) US4769981A (cs)
EP (1) EP0223926B1 (cs)
JP (1) JPH01501010A (cs)
BR (1) BR8606928A (cs)
CS (1) CS275932B6 (cs)
DE (2) DE3541220C1 (cs)
IN (1) IN171461B (cs)
SU (1) SU1672931A3 (cs)
WO (1) WO1987003309A1 (cs)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3744757A1 (de) * 1987-03-02 1989-01-05 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen einer mit einem pneumatischen drallorgan arbeitenden spinnvorrichtung
DE3818370A1 (de) * 1987-06-02 1988-12-22 Murata Machinery Ltd Spinnstelle
AU598302B2 (en) * 1987-06-19 1990-06-21 Uzbexkoe Proizvodstvennoe Obiedinenie Textilnogo Mashinostroenia Device for making a self-twisted thread product
CS269174B1 (en) * 1988-04-21 1990-04-11 Havranek Zdenek Spinning jet for yarn's pneumatic formation
JP2527108B2 (ja) * 1992-06-10 1996-08-21 村田機械株式会社 スプライサ―の解撚ノズル
JPH07126935A (ja) * 1993-10-29 1995-05-16 Murata Mach Ltd 紡績機の糸継ぎ方法
DE10124270A1 (de) * 2001-05-18 2002-12-05 Volkmann Gmbh Verfahren zum "Wiederinbetriebsetzen einer Zwirneinrichtung nach einem Fadenbruch"

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2533655C2 (de) * 1974-10-09 1986-11-27 Toray Industries, Inc., Tokio/Tokyo Spinnmaschine zur Herstellung von gebündeltem Garn
GB1582306A (en) * 1977-05-03 1981-01-07 Toray Industries Method and apparatus for commencing the yarn forming operation of a fasciated yarn
US4114358A (en) * 1977-05-06 1978-09-19 Toray Industries, Inc. Method and apparatus for commencing the yarn forming operation of a fasciated yarn
DE3001917C2 (de) * 1980-01-19 1988-06-16 W. Schlafhorst & Co, 4050 Mönchengladbach Fadenspleißvorrichtung
US4485615A (en) * 1981-03-16 1984-12-04 Pigalev Evgeny Y Apparatus for piecing yarn to broken end of a fibrous strand in a spinning machine
US4503662A (en) * 1981-09-28 1985-03-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for yarn piecing in fasciated yarn spinning
US4457130A (en) * 1981-10-13 1984-07-03 Murata Kikai Kabushiki Kaisha Air spinning nozzle unit
JPS6047939B2 (ja) * 1981-10-22 1985-10-24 村田機械株式会社 空気式紡績装置における糸端案内方法
DE3247990C2 (de) * 1982-12-24 1985-08-29 Volkswagenwerk Ag, 3180 Wolfsburg Rollenführung für eine Schiebetür, insbesondere für Kraftfahrzeuge
US4550560A (en) * 1983-03-30 1985-11-05 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method for piecing fasciated yarn
DE3413894A1 (de) * 1983-04-15 1984-10-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, Aichi Verfahren zum ansetzen eines garnendes
US4631912A (en) * 1985-05-09 1986-12-30 Burlington Industries, Inc. Initial threading for vacuum spinning

Also Published As

Publication number Publication date
BR8606928A (pt) 1987-11-03
CS275932B6 (en) 1992-03-18
CS8608472A2 (en) 1991-07-16
SU1672931A3 (ru) 1991-08-23
JPH01501010A (ja) 1989-04-06
IN171461B (cs) 1992-10-24
DE3663694D1 (en) 1989-07-06
WO1987003309A1 (fr) 1987-06-04
US4769981A (en) 1988-09-13
EP0223926A1 (de) 1987-06-03
DE3541220C1 (de) 1987-06-19

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