EP2503035B1 - Streckwerk mit Verdichtungseinrichtung an einer Spinnmaschine - Google Patents

Streckwerk mit Verdichtungseinrichtung an einer Spinnmaschine Download PDF

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Publication number
EP2503035B1
EP2503035B1 EP20120001238 EP12001238A EP2503035B1 EP 2503035 B1 EP2503035 B1 EP 2503035B1 EP 20120001238 EP20120001238 EP 20120001238 EP 12001238 A EP12001238 A EP 12001238A EP 2503035 B1 EP2503035 B1 EP 2503035B1
Authority
EP
European Patent Office
Prior art keywords
suction
fiber material
cylindrical section
stop roller
twist stop
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.)
Not-in-force
Application number
EP20120001238
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2503035A1 (de
Inventor
Gabriel Schneider
Ludek Malina
Radek Zarecky
Petr Blazek
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
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Publication of EP2503035A1 publication Critical patent/EP2503035A1/de
Application granted granted Critical
Publication of EP2503035B1 publication Critical patent/EP2503035B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • 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

Definitions

  • the invention relates to a drafting of a spinning machine with an upstream traversing device over which the fiber material is fed to the drafting with a laterally to the conveying direction of the fiber material traversing movement and with a subsequent compression device, which has a circumferential, pressurized with negative compression means, with a Suction zone is provided, to which the pulp discharged from drafting material is attracted under the action of a suction air flow, wherein the suction zone is provided with distributed over the circumference of the compression means perforations and following the suction zone, a rotation locking roller is provided with the compression means a nip forms, from which the fiber is fed to a subsequent swirl-forming device.
  • a drafting device of a spinning machine which is provided with a compacting device.
  • the lower roller of the output roller pair of the drafting system is designed as a suction drum (compression means), on which a pressure roller and a subsequent rotation locking roller rests and each form a nip with this.
  • the compression area for the stretched fiber material Between the pressure roller and the rotation locking roller is the compression area for the stretched fiber material. Above the compression area a shield in the form of a Umlenkles is provided.
  • the drawn-out fiber material discharged from the drafting system is sucked into the center region of the suction drum, in which the suction drum is provided with circumferential perforations.
  • the fiber material is compacted, wherein the outwardly projecting fibers are involved under the action of the suction air stream.
  • the fiber material is passed through a traversing device, via which it is alternated transversely to its conveying direction during the passage through the drafting device. With the traversing of the wear of the provided with a coating pressure rollers of the drafting system is reduced.
  • the delivery point of the stretched fiber material continuously changes in time sequence to the surface of the compacting device.
  • the traversing movement - viewed transversely to the conveying direction of the fiber material - extends on both sides of the
  • the compaction effect on the compacting device fails or is reduced, the compaction effect correspondingly deteriorates or disappears altogether, as a result of which the hairiness of the yarn increases. It may now happen that it is inside the compaction device, for. Inside a suction insert of the compacting device (eg, a suction drum), clogging occurs due to an accumulation of sucked fiber fly and other debris. This clogging leads to a reduction or to a lack of suction power at the compression surface and thus to a deterioration of the yarn quality. Devices have therefore been proposed to monitor the drop in suction power and to trigger appropriate measures to shut down the corresponding spinning station.
  • a suction insert of the compacting device eg, a suction drum
  • Such a device is z. B. from the EP-1 352 999 A2 can be seen, with a separate, hinged flap is attached to monitor the Saugluftströmung.
  • this flap which faces a circumferential and perforated straps, changes its position as soon as a disturbance of Saugluftströmung occurs. This position change can be detected by correspondingly attached buttons or visually.
  • buttons or visually With such a flap, it is possible to carry out a targeted monitoring of Saugluftströmung.
  • the attachment of such a flap requires additional space, which is usually not available in the region of the compression device, in particular, if the Compression is covered by an air guide. In addition, additional moving parts are needed, which are also susceptible to contamination.
  • This object is achieved by proposing that - seen in the direction of the axis of rotation of the rotation locking roller - the rotation locking roller has a cylindrical, the nip forming portion to which each connect to the ends of the rotation locking roller projecting portions which are stepped or continuous in reduce their diameter toward the ends, wherein the width of the cylindrical portion of the rotation locking roller is greater than the width of the suction zone and - seen in the conveying direction of the fiber material - at least one of the reversal points of the traverse path outside the cylindrical portion of the rotation locking roller and within a cylindrical portion subsequent section lies.
  • the “rotation barrier roll” is a “roll” in which a "spinning triangle" is formed at the exit under the action of a subsequent swirl-forming device.
  • This device can, for. Example, consist of a ring / runner combination, wherein the now provided with a spin fiber material (yarn) is wound onto a spindle to form a cop.
  • the twisted fiber material (yarn) which is formed following the rotation locking roller, has a substantially higher adhesive force than the fiber material, which is in the region of the compression zone between the nip of the pair of output roller Drafting and the clamping point of the rotation locking roller is located. This circumstance makes use of the invention. D.
  • the fiber material discharged from the pair of delivery rollers of the drafting system is moved toward the suction zone under the action of the applied suction flow and compacted there. Only when overlap by the traversing movement, the delivery point of the fiber material in the pair of output rollers of the drafting and the suction zone, no lateral displacement of the fiber material takes place by the suction air flow.
  • stepwise or continuously decreasing in diameter sections on the one hand ensures that in this area no nip is formed with the compression means and on the other hand, the suction region remains substantially sealed off by these sections. This ensures that no air flow is created by the suction effect, which is opposite to the conveying direction of the fiber material.
  • the width of the suction zone is defined by the perforations disposed on the circumference of the compacting means communicating with a suction slot of corresponding width of a suction insert disposed within the compacting means.
  • the width of the suction slot corresponds to the width of the suction zone.
  • the suction slot is disposed in the region between the pair of output rollers of the drafting system and the nip of the rotation locking roller and may include various cross sections and configurations.
  • the delivery point of the fiber material from the output rollers of the drafting - seen in the conveying direction - outside the Area of the central cylindrical portion of the rotation locking roller this fiber material is no longer displaced laterally and enters the region of the adjoining the cylindrical portion, tapered portions which do not form a nip with the compression means.
  • the tensile force which is applied to the, provided with a twist yarn, also acts on the unrotated portion of the fiber material in the region between the terminal point of the output roller pair of the drafting system and the rotation locking roller.
  • this untwisted portion of the fiber material has a substantially lower adhesive force than the twisted yarn, so that it comes through the action of the tensile force described to a demolition of the fiber material in this section.
  • the torn-off end projecting from the drafting system is then caught and sucked off by a suction device attached to each drafting system.
  • the missing yarn feed to the take-up device can be detected by a sensor and communicated visually or via an electrical signal to the operator.
  • the width of the cylindrical portion of the rotation locking roller is smaller than the path of traversing movement. This makes it possible to lay the traversing region with respect to the central cylindrical portion of the rotation locking roller so that - seen in the conveying direction of the fiber material - the reversal points of the traversing movement are on both sides outside the cylindrical central portion.
  • the cylindrical section is between 6 and 10 mm. It must be smaller than the traverse path, provided that the traversing movement extends over both ends of the cylindrical portion.
  • the adjoining on both sides of the cylindrical portion of the rotation locking roller portions may be formed conically, each tapering towards the ends of the rotation locking roller.
  • the taper angle of the cones can be between 1 ° and 20 °.
  • central cylindrical portion of the rotation locking roller on both sides of at least one cylindrical section with a smaller diameter than the middle section adjoins.
  • the outer sections adjoining the central section can also consist of a plurality of cylindrical sections which are step-shaped towards the respective ends and reduce in diameter.
  • Fig. 1 shows a drafting device 1 (of a plurality of juxtaposed Drafts arrangements) of a spinning machine (ring spinning machine), not shown, wherein the drafting device (in short "drafting” called) in the present example consists of three pairs of rollers. These are formed from an input roller pair 2, 3 to which a middle roller pair 5, 6 is arranged downstream.
  • the fiber roving F (roving) drawn off from a roving bobbin S is fed via a deflection 10 and a subsequent traversing device 20 to the drafting system 1 via the nip Z of the inlet rollers 2, 3.
  • the traversing device 20 performs a lateral traversing movement with a traversing c within the reversal points U1, U2, which is directed transversely to the conveying direction FS.
  • the traversing device is not one connected drive connected.
  • the speed of the center rollers 5, 6 is slightly increased relative to the speed of the input rollers 2, 3, whereby a pre-distortion of the roving F takes place between these pairs of rollers.
  • a respective straps 11, 12 are guided, which are each held around a cage not shown in detail in its illustrated position.
  • the roving F drawn with a preliminary draft is transferred with the aid of the aprons 11, 12 to the clamping point Z2 of a pair of delivery rollers 8, 9.
  • the output rollers 8, 9 have a much higher speed than the center rollers 5, 6, wherein between the clamping points Z1 and Z2 a main delay of the roving F takes place.
  • the rollers 3, 6, 9 are directly connected to a drive not shown in detail, while the rollers 2, 5 and 8 rest under a compressive load on the rollers 3, 6 and 9 and are driven by this via friction.
  • the output roller 9 is carried out in the present example as a driven suction roll, which is provided in its central region with extending over the entire circumference perforations or openings O, in particular from the view X in Fig. 2 can be seen.
  • a stationary attached suction unit 50 is mounted within the suction roll 9.
  • the suction unit 50 has, on the side which faces the inner surface IF of the suction roll 9, a schematically indicated suction opening 51 (eg a suction slot) which runs along a compression area V and is connected to a vacuum source via lines not shown.
  • an air guide element 16 is mounted to ensure a lateral air supply, which is necessary for an optimal compression process. This is shown schematically in Fig.2 shown by arrows. More information on the compression process and the necessary air flow are published DE-44 48 021 B4 refer to.
  • a further embodiment of a route 1 with a compression device is shown, in which also according to the invention claimed embodiment of a rotation locking roller 14a, 14b may be used, as in the Fig.3 and Fig.4 will be described and shown below.
  • the suction roller 9 is arranged with a suction insert 50 following an output roller pair 9a, 8 of the track 1.
  • the drive of the suction roller 9 can be removed from the output lower roller 9a.
  • the rotation lock roller rests with a pressure force on the suction roller 9 and forms a nip D.
  • the fiber material F supplied via the traversing device 20 to the nip line Z is displaced transversely to the conveying direction FS during operation in a specific time interval (eg 1 to 5 minutes) between the reversal points U1, U2.
  • a specific time interval eg 1 to 5 minutes
  • the traversing c and the suction zone SZ with the width s centered to each other. Is the feed of the fiber F F z. B. in the area of one of Reversal points U1 or U2, it is guided in this position by the drafting system 1 to the nip Z2, as can be seen from the dashed lines shown.
  • the fiber material F After passing through the nip Z2 of the pair of output rollers 8, 9, the fiber material F enters the effective range of the suction air flow, which is generated via the suction slot 51 in the region of the suction zone SZ, as indicated by arrows. Under the influence of the suction air flow between the peripheral surface AF and the air guiding element 16, the fiber material emerging from the clamping line Z2 is deflected in the direction of the suction slot 51 or to the suction zone SZ.
  • the fiber material is guided on the perforated outer surface AF above the suction slot 51 in the suction zone SZ to the clamping point D of the rotation locking roller 14 and simultaneously compressed. From the clamping point D, the fiber material is then transferred to a subsequent swirl-forming device 40.
  • the fiber material F is no longer deflected to the suction slot 51, and the suction zone SZ and maintains its position, which it has when leaving the nip Z2 held.
  • D. h the fiber material is transferred in this case without change of direction and without compression on the peripheral surface AF to the nip D of the rotation locking roller 14, from which it is the subsequent swirl-forming device 40 is supplied. If there are no additional monitoring devices for the detection of the failure of the suction air, yarn of poorer quality is produced at this spinning station. To prevent this, additional monitoring devices must be installed at each spinning station in this design.
  • the swirl-forming device 40 consists in the present embodiment of a ring 26 which is fixed to a moving up and down ring rail 25 and on which a rotor 27 rotates.
  • a connected to a drive, not shown, spindle 29 is arranged, which is rotatably mounted on schematically indicated bearings 31 on the spinning machine.
  • a sleeve 30 is attached, on which the formed yarn FK is wound into a cop 24.
  • the fiber material discharged from the nip D is fed to the rotor 27 via a yarn guide 28.
  • a sensor 33 may be provided, via which the presence of a yarn can be monitored.
  • the sensor 33 is connected in the present example via the line 34 to a central controller ST, which evaluates the signal and can trigger appropriate displays or warning signals for the operator.
  • a suction pipe 18 is provided, which is connected to a suction source 22 shown schematically.
  • Fig. 3 and Fig.4 each shows an embodiment according to the Fig.2 with the inventive embodiment of the rotation locking roller in conjunction with the traversing movement.
  • FIG. 3 In the embodiment of Figure 3 are - viewed transversely to the conveying direction - the traversing c and the suction zone SZ with the width s (as in the example of Fig.2 ) aligned with each other in the middle.
  • the traversing path c and the width s of the suction zone SZ extend symmetrically to a central axis M, which in the present example also represents the axis of symmetry of the suction slot 51.
  • the rotation lock roller 14a has a cylindrical central part ZA with the width b, which is arranged symmetrically to the central axis M.
  • the cylindrical central part ZA is thus also - viewed transversely to the direction of conveyance FS - centrally to the suction slot 51, or compression region V of the suction zone SZ with the width s (eg 1 - 3 mm) arranged.
  • the width b (6 - 10 mm) greater than the width s, so that the, from the compression region V of the suction zone SZ delivered to the nip D fiber material is securely and completely clamped. If the feed point of the fiber material F is within one of the traversing regions h1 or h2 during the traversing movement, then the fibrous material is no longer deflected or drawn toward the suction slot 51 in the event of a drop or failure of the suction effect at the suction slot 51. Ie.
  • the rotation locking roller 14a is provided on both sides of the cylindrical central part ZA each with an outwardly angled ⁇ angle taper K1, K2, there is no more clamping line D in the region of the cones K1, K2 between the rotation locking roller 14a and the suction roller In the transition from the cylindrical middle part ZA to the cones K1, K2, there is still a small clamping effect which, however, steadily decreases as the fiber material moves farther away from the cylindrical middle part ZA. Due to the elimination of the clamping action by the rotation locking roller 14a in the, provided with a twisted yarn FK existing tensile force is transferred to the portion of the fiber material F, which is located between the output rollers 9, 8 of the distance 1 and the rotation locking roller 14a.
  • this section is provided with little or no rotation and therefore has a substantially lower adhesive force than the provided with a twist yarn FK. This results in the described omission of the clamping action by the cylindrical central part ZA to a demolition of the fiber material F in the area between the output rollers 9, 8 of the distance 1 and the rotation locking roller 14a.
  • the protruding from the distance 1 end of the suction pipe 18 is detected and sucked. Since the route 1 continues to work, the subsequently delivered uncompressed fiber material is sucked from the suction pipe 18 and fed to a collection point, not shown, under the action of the vacuum source 22. The torn-off end originating from the twisting device 40 is still wound up on the cop.
  • the absence of the yarn FK is determined via the sensor 33 and transmitted to the controller ST.
  • About the controller ST can then be notified by display on a screen or optical or acoustic means the interruption at the corresponding spinning station, which can then initiate appropriate measures to repair the spinning station.
  • the inventively proposed training of the rotation locking roller 14a in conjunction with the traversing movement an automatic and automatic interruption of the yarn production is generated without additional monitoring means must be used.
  • the width b of the cylindrical central portion ZA of the rotation locking roller is kept to a minimum possible extent, so that the supply of the fiber material as soon as possible in an interruption of the suction by the traversing movement in the areas h1, h2 passes, in which the clamping action is canceled by the rotation locking roller and an automatic demolition takes place.
  • FIG 4 a further embodiment is shown, which essentially the same functional sequences as in the example Figure 3 shows.
  • Konen K1 close in the example of Figure 4 reduced in diameter cylindrical portions Z5 and Z6 with a diameter d1, which is smaller than the diameter d of the central part ZA.
  • the sections Z5, Z6 are followed by further tapered cylindrical sections Z4, Z7 whose diameter d2 is smaller than the diameter d1 of the sections Z5, Z6. This also ensures that no clamping action is exerted on the fiber material of the rotation locking roller 14b, if this is outside the range of the width b of the central part ZA. In the present example this is the range h3.
  • FIG. 4a will be a partial view of Figure 4 shown, wherein a rotation locking roller 14c is used, in which instead of the on both sides of the cylindrical central portion ZA subsequent two reduced diameter cylindrical sections Z5, Z4, and Z6, Z7 respectively only a cylindrical portion Z8, or Z9, each having a reduced Diameter d4 connects. Ie. the diameters d4 of the sections Z8, Z9 are smaller than the diameter d of the central part ZA.
  • the other elements correspond to those in Figure 4 shown and described elements, which will not be discussed in more detail here.
  • the fiber material F is displaced by the suction on one side in the direction of the suction slot 51 and compressed, as indicated by arrows.
  • the rotation locking roller 14b which leads to the previously described outline and the subsequent measures.
  • the rotation locking roller 14b of the compression area is sufficiently sealed off from the environment following the rotation locking roller, so that no undesirable counterflow of air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20120001238 2011-03-21 2012-02-24 Streckwerk mit Verdichtungseinrichtung an einer Spinnmaschine Not-in-force EP2503035B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4772011A CH704671A2 (de) 2011-03-21 2011-03-21 Streckwerk mit Verdichtungsvorrichtung an einer Spinnmaschine.

Publications (2)

Publication Number Publication Date
EP2503035A1 EP2503035A1 (de) 2012-09-26
EP2503035B1 true EP2503035B1 (de) 2014-04-02

Family

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Application Number Title Priority Date Filing Date
EP20120001238 Not-in-force EP2503035B1 (de) 2011-03-21 2012-02-24 Streckwerk mit Verdichtungseinrichtung an einer Spinnmaschine

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Country Link
EP (1) EP2503035B1 (zh)
JP (1) JP5889064B2 (zh)
CN (1) CN102691148B (zh)
CH (1) CH704671A2 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103451798B (zh) * 2013-09-10 2015-07-22 江南大学 一种含有少有害毛羽与丰富有益毛羽的纯棉纱线的生产方法
CN103849957B (zh) * 2014-03-20 2016-04-20 天津工业大学 一种少毛羽低扭矩环锭纱线的加工方法与装置
DE102017113045A1 (de) * 2016-06-23 2017-12-28 Maschinenfabrik Rieter Ag Changiervorrichtung für ein Streckwerk einer Textilmaschine sowie ein Verfahren für deren Betrieb
WO2019146787A1 (ja) * 2018-01-29 2019-08-01 ダイワボウホールディングス株式会社 紡績糸、その製造方法及びそれを含む布帛
DE102019100603A1 (de) * 2019-01-11 2020-07-16 Maschinenfabrik Rieter Ag Streckwerk einer Spinnereimaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4448021B4 (de) 1994-07-25 2009-12-10 Maschinenfabrik Rieter Ag Spinnmaschine mit Saugzone und Hochverzug im Streckwerk
DE19756393C2 (de) 1997-12-18 2001-08-16 Zinser Textilmaschinen Gmbh Spinnereimaschinen-Streckwerk
DE19815050B4 (de) 1998-04-03 2005-09-22 Saurer Gmbh & Co. Kg Verdichtungsstreckwerk für eine Spinnmaschine
DE19909501A1 (de) * 1999-03-04 2000-09-07 Rieter Ag Maschf Spinnmaschine mit Verdichtungseinrichtung
CN1340645A (zh) * 2000-09-01 2002-03-20 里特机械公司 一种带有压缩设备的纺织机
DE10055300A1 (de) * 2000-11-02 2002-05-08 Stahlecker Fritz Vorrichtung in einer Spinnmaschine zum Verdichten eines Faserverbandes
DE10215360C1 (de) 2002-04-08 2003-10-30 Zinser Textilmaschinen Gmbh Vorrichtung zum Herstellen von verdichtetem Garn
DE10227463C1 (de) 2002-06-20 2003-10-16 Zinser Textilmaschinen Gmbh Ringspinnmaschine mit Streckwerken und Verdichtungsvorrichtungen
DE102008033388B4 (de) 2008-07-16 2020-07-16 BSH Hausgeräte GmbH Trockner mit Wärmepumpenkreis
JP2010163702A (ja) * 2009-01-13 2010-07-29 Murata Machinery Ltd ドラフト装置

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Publication number Publication date
EP2503035A1 (de) 2012-09-26
JP2012197550A (ja) 2012-10-18
CN102691148B (zh) 2017-03-22
JP5889064B2 (ja) 2016-03-22
CH704671A2 (de) 2012-09-28
CN102691148A (zh) 2012-09-26

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