EP0633213A1 - Textilmaschine mit Garnspeicher - Google Patents

Textilmaschine mit Garnspeicher Download PDF

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Publication number
EP0633213A1
EP0633213A1 EP94110288A EP94110288A EP0633213A1 EP 0633213 A1 EP0633213 A1 EP 0633213A1 EP 94110288 A EP94110288 A EP 94110288A EP 94110288 A EP94110288 A EP 94110288A EP 0633213 A1 EP0633213 A1 EP 0633213A1
Authority
EP
European Patent Office
Prior art keywords
yarn
plate
path
travel
operative
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
EP94110288A
Other languages
English (en)
French (fr)
Other versions
EP0633213B1 (de
Inventor
Peter Damann
Benno Frank
Dietrich Berges
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer 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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0633213A1 publication Critical patent/EP0633213A1/de
Application granted granted Critical
Publication of EP0633213B1 publication Critical patent/EP0633213B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • 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
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • 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
    • B65H54/86—Arrangements for taking-up waste material before or after winding or depositing
    • 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

Definitions

  • the present invention relates to a textile machine for processing a filament yarn, wherein the yarn is advanced by a feed system into a treatment zone and withdrawn from the treatment zone by means of an extraction system, and wherein a yarn accumulator is arranged downstream of the feed system for temporarily storing the yarn in the event of a yarn break or other irregularity in the advance of the yarn.
  • a machine of the described type is known, for example, from DE-OS 22 54 736.
  • a machine of this type it is necessary to withdraw the yarn from its production or processing zone always at a higher speed than it is supplied thereto.
  • irregularities often occur in the yarn delivery. These irregularities may be caused by the yarn production method itself, or they may be caused by a disturbance in the subsequent steps of the process.
  • Such irregularities in the yarn delivery can easily result in breakdowns of the process, such as by having the yarn become entangled, or by the yarn forming laps.
  • the problem of lap formation is of very great importance in the operation of textile machinery, inasmuch as laps can damage a textile machine.
  • Such a formation of laps may occur, even when there are only short-time irregularities in the yarn delivery, which can develop, for example, in the takeup zone of the textile machine, especially when it is necessary to transfer the continuously advancing yarn from a fully would package to an empty tube.
  • the known apparatus also has the disadvantage that it requires an adequately strong source of compressed air, and must either be in operation continuously, or be shut down, when breakdowns occur. By the time the apparatus becomes operative, it may however be already too late to avoid the above noted problems.
  • the dropping yarn end may become entangled, or be wound in other feed systems, or it may wrap about other rotating elements of the processing station for that yarn or adjacent processing stations. Also, if worst comes to worst, the dropping yarn end may even damage the machine elements. Finally, it is very difficult to subsequently remove the yarn residues.
  • a filament yarn processing apparatus which comprises a yarn feed means for advancing the yarn along an operative path of travel and to a treatment zone, and a yarn accumulator positioned immediately downstream of a yarn feed means, and which comprises a deflecting plate having opposite side edges.
  • the plate is positioned generally transverse to the operative yarn path of travel, with one of the side edges of the plate being adjacent the operative path of travel.
  • the yarn feed means defines a natural yarn delivery path along which the yarn is advanced in the absence of guidance downstream of the feed means, and to insure that the advancing yarn engages the plate in the event of a yarn break or the like, the plate is preferably positioned so as to intersect the natural yarn delivery path.
  • the yarn accumulator preferably also comprises a yarn guide disposed on the side of the operative yarn path of travel opposite from the one side edge of the plate, and such that the operative yarn path of travel runs between the one side edge of the plate and the yarn guide.
  • the deflecting plate causes the quantities of yarn to accumulate at a harmless place and, as a result of this accumulation, to then appear no longer as an individual yarn. While an individual yarn is easily caught by other machine elements as a result of unavoidable air currents, the resulting accumulation retains the yarn and is not susceptible to the air currents because of its larger mass.
  • the use of the present invention does in general not require any modifications of the textile processing machine. However, it may be useful to offset the yarn withdrawal or extraction device relative to the feed system, so that the extraction device does not extend along the natural yarn delivery path of the yarn feed means.
  • This natural yarn delivery path is in general the tangent to the feed system, or in a so-called pressure-roll type feed system, the common tangent to the driven feed roll and the pressure roll.
  • the deflecting plate is effective, since it is arranged always in the direct vicinity of the operative yarn path, or even in the operative yarn path, in the case of a regular advance, which is predetermined by the feed system and the extraction device.
  • the texturing machine comprises a yarn supply package 10 , on which a thermoplastic filament yarn 12 is wound.
  • the yarn 12 is withdrawn under a certain tension by a feed system 18 via a yarn guide 14 .
  • a first, elongate heater 20 extends, over which the yarn advances and is heated to a predetermined temperature.
  • a further yarn guide 22 Arranged at the outlet end of heater 20 is a further yarn guide 22 , which deflects the yarn so as to advance it to a cooling plate 24 .
  • the heater 20 and cooling plate 24 may be arranged relative to one another approximately in a roof-like configuration, with the yarn guide roll 22 forming the apex of the roof-like structure.
  • a conventional false twist unit schematically illustrated at 28 which for example may be structured in accordance with German Patent 22 13 881 or U.S. Patent 4,339,915.
  • a further feed system 30 Arranged downstream of the false twist unit 28 is a further feed system 30 , which serves to draw the yarn both over the heater 20 and the cooling plate 24 .
  • a set heater which is constructed as a curved heating tube 34 which is surrounded by a heating jacket 32 .
  • the latter serves to heat the heating tube 34 externally with vapor to a predetermined temperature.
  • the heating tube 34 and its jacket are arranged upright.
  • Heating tube 34 is connected seamlessly, i.e., in an airtight manner, to an equalizing tube 42 .
  • a yarn guide 44 is positioned in the bent portion of a channel 38 , which joins the heating tube 34 to the equalizing tube 42 , and the yarn guide 44 is constructed as a pin or roll with a peripheral groove.
  • a further feed system 46 Arranged at the outlet end of tube 42 is a further feed system 46 .
  • the latter is a pressure-roll type feed system, and comprises a driven feed roll 46.1 and a pressure roll 46.2 , which freely rotates and presses the yarn in a slip-free manner against the feed roll. Adjacent thereto is a yarn accumulator 1 which is described further below.
  • the yarn is wound on a takeup package 50 which is driven on its circumference by a friction roll 52 .
  • a traversing mechanism 54 is positioned upstream of the friction roll 52 , which reciprocates the yarn 12 along package 50 , and causes it to be wound in a cross wound package.
  • a suction tube 62 ( Figure 2A) with radial holes precedes the yarn traversing mechanism. The suction tube 62 allows the yarn to be removed by suction, when the package 50 is fully wound, and when for purposes of doffing the package the yarn needs to be cut between suction tube 62 and yarn traversing mechanism 54 .
  • a platform 56 Located above equalizing tube 42 is a platform 56 , which is supported by rails or posts 58 on the floor 60 and which serves as an operator's aisle.
  • Figure 2A is an enlarged detail view of the takeup zone within the area II of Figure 1 , and in particular Figure 2A illustrates in more detail the yarn accumulating device 1 , which becomes operative, when the yarn breaks or slackens.
  • the yarn accumulator 1 comprises a yarn guide 2 and a deflecting plate 3 , which are mounted to a common support 4 .
  • the deflecting plate 3 has opposite side edges 5, 6, and it is angled along an apex line 7 to define two plate segments 8, 9, which are inclined with respect to each other in V-shape at an angle of about 90°.
  • the apex line 7 extends toward the yarn guide 2 .
  • the yarn guide 2 lies at a short distance behind deflecting plate 3 .
  • the plate 3 may for example consist of two flat metal sheets, which are joined along the apex line 7 , or it may comprise a unitary flat metal sheet which is bent in V-shape along the apex line.
  • the deflecting plate 3 may alternatively be a flat surface, or it may have the shape of a funnel, the axis of which extends approximately in the natural direction of the operative yarn advance. Also, the deflecting plate 3 may be provided with an adhesive coating on the side thereof facing the yarn feed system, for the purpose of retaining a broken yarn end as further described below.
  • This adhesive coating for example may comprise a film which is coated on both sides with an adhesive material, and which is applied to the plate so that one coated side is exposed.
  • the deflecting plate may be covered with a cling tape which has a hook-like fibrous adhesive coating as schematically illustrated in Figure 3A.
  • the plate 3 is mounted so as to be generally transverse to the operative yarn path of travel, and with the side edge 5 being spaced from but closely adjacent the path of travel. Also, the yarn guide 2 is disposed on the side of the yarn path of travel opposite from the side edge 5 of the plate 3 , and such that the yarn path of travel runs between the side edge 5 and the yarn guide 2 in normal operation. Thus, the advancing yarn is not deflected by the plate 3 during normal operation.
  • the yarn guide 2 is provided, on the one hand, with a yarn guide element, which is arranged likewise closely adjacent the operative yarn path of travel.
  • the guide surface of the yarn guide extends along an extension of the apex line 7 , which is formed by deflecting plate 3 , but is slightly spaced apart from its side edge 5 . Consequently, there exists a gap between the side edge 5 of deflecting plate 3 and the guide edge of yarn guide 2 , which permits the yarn advancing under tension to pass without contacting, as best seen in Figure 1.
  • the guide element of yarn guide 2 is laterally bordered by guide plates, which cover the side edge 5 of the deflecting plate and form a lateral boundary of the yarn path.
  • the arrangement of the deflecting plate 3 and the yarn guide 2 in the machine is such that the apex line 7 of the deflecting plate is aligned approximately perpendicularly with respect to the yarn path of travel.
  • the yarn accumulator is arranged such that the deflecting plate is positioned along the common tangent to the feed roll 46.1 and the pressure roll 46.2 of the feed system 46 .
  • the yarn starts to pile up. Thereafter, the yarn is pulled out from this pile by the suction device 62 .
  • a deflecting plate 3 mounted to a common support 4 is positioned downstream of the first feed system 18 , which advances the yarn in the direction of the heater 20 .
  • the second feed system 30 which is adjacent the false twist unit 28 serves as a yarn withdrawal or extraction system.
  • Figure 3 illustrates the yarn in its normal or operative path of travel.
  • Figures 4 and 5 illustrate the operating condition, in which a yarn end is down, and the broken yarn end is continuously supplied by the feed system 18 .
  • this operating condition one may incur the risk that the broken yarn end enters into takeup package 50 , the drive elements of which, in particular friction roll 52 and yarn traversing mechanism 54 continue to be in operation.
  • the broken yarn end also may be caught in an adjacent processing station.
  • the yarn advances under tension along its operative path of travel, so that it passes between and does not contact either the side edge 5 of deflecting plate 3 and the guide edge of yarn guide 2 . It is however possible to also offset the yarn accumulator relative to the yarn path, so that the yarn is slightly deflected on the deflecting plate or the yarn guide. This would involve only a matter of yarn tension and wear. In the event the yarn breaks, it is no longer under tension and is ejected by feed system 18 against the deflecting plate, namely into the apex line 7 between the two flat surfaces of deflecting plate 3 .
  • the yarn accumulator is arranged such that the deflecting plate extends along the common tangent to the feed roll and pressure roll of feed system 18 , or in a position which has previously been found by tests to intersect with the natural yarn delivery path along which the yarn is advanced in the absence of guidance downstream of the feed system 18 .
  • the deflecting plate 3 is not covered with an adhesive coating. Therefore, the accumulated quantity of yarn drops from the deflecting plate in the form of a yarn tangle. However, a collecting bin 26 is provided below the deflecting plate, which is positioned so as to collect the accumulated tangle.
  • the natural yarn delivery path of the feed system in the meaning of this invention is theoretically the tangent to the point, at which the yarn leaves the feed system, or the common tangent, when the feed system is of the nip type or employs nip rolls. Practically, however, deviations may result, for example, when in a feed system employing nip rolls, the yarn adheres more to one of the rolls than to the other. Deviations may also result, when the yarn is "spat out" in a horizontal direction, provided it is under no tension. Therefore, in cases of doubt, it will be necessary to determine by test the natural yarn delivery path of the yarn when under no tension or low tension. Under some circumstances, it may also be necessary to consider the speed of the feed system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP94110288A 1993-07-10 1994-07-01 Textilmaschine mit Garnspeicher Expired - Lifetime EP0633213B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4323059 1993-07-10
DE4323059 1993-07-10
DE4341048 1993-12-02
DE4341048 1993-12-02

Publications (2)

Publication Number Publication Date
EP0633213A1 true EP0633213A1 (de) 1995-01-11
EP0633213B1 EP0633213B1 (de) 1998-04-01

Family

ID=25927558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110288A Expired - Lifetime EP0633213B1 (de) 1993-07-10 1994-07-01 Textilmaschine mit Garnspeicher

Country Status (4)

Country Link
EP (1) EP0633213B1 (de)
CN (1) CN1061011C (de)
DE (1) DE69409295T2 (de)
TW (1) TW268056B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000015532A1 (de) * 1998-09-10 2000-03-23 Barmag Ag Texturiermaschine zum texturieren und aufwickeln eines fadens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE123449C (de) *
FR342236A (fr) * 1904-04-12 1904-09-02 Alsacienne Constr Meca Dispositif pour continus à filer, à retordre, permettant d'éviter les fils doubles en cas de rupture de fils
FR367701A (fr) * 1905-08-11 1906-11-08 Henry Bibby Reynolds Perfectionnements apportés aux métiers à filer à anneaux et aux continus à retordre à anneaux et à ailettes
FR735104A (fr) * 1932-03-24 1932-11-03 Dispositif destiné à empêcher les inconvénients qui résultent de cassures de fil dans les continus à filer
FR44604E (fr) * 1934-03-21 1935-03-19 Dispositif destiné à empêcher les inconvénients qui résultent de cassures de fil dans les continus à filer
GB526635A (en) * 1938-03-28 1940-09-23 Gessner Ernst Ag Improvements in ring spinning frames
FR1402460A (fr) * 1964-07-27 1965-06-11 Procédé de bobinage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415393A (de) * 1963-10-02 1966-06-15 Filatures Et Tissages F & Th F Platte mit Luntendurchtrittsöffnungen am Auslauf von Flyerstreckwerken
US4632324A (en) * 1982-11-12 1986-12-30 Mayer & Cie. Gmbh & Co. Strand storing and delivering device
DE3824437C1 (de) * 1988-07-19 1990-02-01 Gustav 7290 Freudenstadt De Memminger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE123449C (de) *
FR342236A (fr) * 1904-04-12 1904-09-02 Alsacienne Constr Meca Dispositif pour continus à filer, à retordre, permettant d'éviter les fils doubles en cas de rupture de fils
FR367701A (fr) * 1905-08-11 1906-11-08 Henry Bibby Reynolds Perfectionnements apportés aux métiers à filer à anneaux et aux continus à retordre à anneaux et à ailettes
FR735104A (fr) * 1932-03-24 1932-11-03 Dispositif destiné à empêcher les inconvénients qui résultent de cassures de fil dans les continus à filer
FR44604E (fr) * 1934-03-21 1935-03-19 Dispositif destiné à empêcher les inconvénients qui résultent de cassures de fil dans les continus à filer
GB526635A (en) * 1938-03-28 1940-09-23 Gessner Ernst Ag Improvements in ring spinning frames
FR1402460A (fr) * 1964-07-27 1965-06-11 Procédé de bobinage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000015532A1 (de) * 1998-09-10 2000-03-23 Barmag Ag Texturiermaschine zum texturieren und aufwickeln eines fadens

Also Published As

Publication number Publication date
EP0633213B1 (de) 1998-04-01
CN1061011C (zh) 2001-01-24
DE69409295T2 (de) 1998-08-27
TW268056B (de) 1996-01-11
DE69409295D1 (de) 1998-05-07
CN1100696A (zh) 1995-03-29

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