EP2682509B1 - Banc d'étirage pour un métier à tisser - Google Patents

Banc d'étirage pour un métier à tisser Download PDF

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Publication number
EP2682509B1
EP2682509B1 EP13003034.9A EP13003034A EP2682509B1 EP 2682509 B1 EP2682509 B1 EP 2682509B1 EP 13003034 A EP13003034 A EP 13003034A EP 2682509 B1 EP2682509 B1 EP 2682509B1
Authority
EP
European Patent Office
Prior art keywords
drafting system
drafting
rollers
top rollers
roller pair
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
EP13003034.9A
Other languages
German (de)
English (en)
Other versions
EP2682509A2 (fr
EP2682509A3 (fr
Inventor
Jürgen Schaller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2682509A2 publication Critical patent/EP2682509A2/fr
Publication of EP2682509A3 publication Critical patent/EP2682509A3/fr
Application granted granted Critical
Publication of EP2682509B1 publication Critical patent/EP2682509B1/fr
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
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • 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 system for a spinning machine according to the preamble of claim 1.
  • Draw frames in various embodiments are known in connection with spinning machines, for example ring spinning machines, and are described in detail in numerous patent applications.
  • Such drafting systems differ, for example, in terms of the number of pairs of rollers and / or in relation to the structural design of the pendulum carrier, which receive the top rollers. Also with regard to the exact training or the equipment of the different pairs of rollers considerable differences are sometimes known.
  • the lower rollers are formed as machine-length components, which are composed of a plurality of roller segments.
  • These machine-length lower rollers are usually driven by a strong, machine end side arranged in a drive frame of the textile machine drafting motor, which ensures via an intermediate reduction gear that rotate the input, the center and output lower rollers at different speeds and thereby distort the submitted fiber material properly ,
  • the middle roller pair is equipped with so-called drafting straps. That is, in these modern drafting systems, both the Mittelobenrwalze, as well as the middle lower roller each have such Verzugsriemchen that secures the sliver to be forgiven in the region of the so-called main drafting zone.
  • a modern Riemchenstrecktechnik in particular for warping of fire-retardant and heat-resistant yarn is for example in the US 7, 937, 924 B2 described.
  • the input sub-roller is mounted on a carriage which is defined slidably mounted on a punch so that the default range of the so-called default zone is adjustable.
  • both the middle lower roller, and the middle upper roller are stored, both the middle lower roller, and the middle upper roller, as usual in Riemchenstrecktechniken, each equipped with a delay straps.
  • the CH 256210 A discloses a drafting device for processing filaments.
  • the drafting system is divided into two independently working partial drafting systems.
  • the first part drafting system is designed as a draft-drafting system. Downstream of the tensile drafting system is arranged a draft drafting system.
  • the drafting drafting equipment has a delay apron in a known manner. Between the two partial drafting a condenser is arranged.
  • the invention has for its object to provide a drafting system for a ring spinning machine, which is designed so that an existing filament template material can be processed reliably and quickly. That is, on the drafting system according to the invention, for example, fire-retardant and heat-resistant filaments are to be processed so that they can be spun on a downstream ring spinning device to a fiber material, from which later garments can be made, which have a comfortable wearing behavior.
  • a compacting device In the conveying direction behind the pair of output rollers, a compacting device is further installed, which then ensures bundling of the resulting through the tearing open filament strand and thus ensures that this filament strand are spun by the spindle of a workstation of a spinning machine, preferably by a ring spinning spindle to a yarn can be further processed in subsequent work steps.
  • a device for discharging electrostatic charges is connected to the drafting system (Anspr.2).
  • the use of such a device can be prevented, especially during inventive processing of synthetic filaments, which are known to have only a low electrical conductivity, as a rule, that electrostatic charging occurs during operation of the drafting system.
  • the top rollers are each provided with a cover having a hardness of 60 to 90 Shore, that is, 60 to 70 Shore for the top rollers and 80 to 90 Shore for the input and middle top rollers.
  • a cover having a hardness of 60 to 90 Shore allows the use of pendulum carriers, which allow a high loading force of the top rollers. That is, it can be used a pendulum carrier in which a high clamping force is adjustable between the top rollers and the associated corrugated bottom rollers.
  • the loading force of the input and center rollers is greater than 25 daN.
  • the top rollers have a diameter of 40-60 mm and the bottom rollers have a diameter of 30-40 mm.
  • the top rollers have a diameter of 40-60 mm and the bottom rollers have a diameter of 30-40 mm.
  • the top rollers each mounted in a pendulum carrier preferably have a diameter of 50 mm, which has also proved to be very advantageous in combination with the above-described, structured bottom rollers with a diameter of 38 mm.
  • the drafting device on a compression device which is connected to a vacuum source.
  • the compacting device ensures that the separated filament strand is bundled in the region of a so-called compaction zone to form a structure, which can then be spun onto a thread on a ring spinning spindle.
  • a circumferential perforated belt is used.
  • This perforated belt comprises, for example, a driven lower roller and a guide housing, which is connected via a pneumatic line to the vacuum source.
  • Such trained and working compression devices are not fundamentally new in connection with ring spinning machine drafting systems, but work very reliably and are also very advantageous for the purpose of the invention. That is, in a compacting device, as used in the drafting device according to the invention, a separate filament strand leaving the pair of outfeed rollers is still in a non-rotated state, that is, with filamentary pieces substantially parallel to each other, pneumatically in a so-called compression zone by a vacuum-pressurized transport - And compacting contacted.
  • the pending in this transport and compression means Saugluftströmung ensures that the filament pieces are positioned in the transport direction and thus bundled and compacted into a fiber structure.
  • the compacting device as described in claim 10 may also have a circumferential perforated hollow roller connected to a vacuum source.
  • a compression device By such a compression device, the filament pieces can be positioned in the transport direction and thus bundled and compacted into a fiber structure.
  • the pair of input rollers and the middle roller pair form a so-called Vorverzugsfeld in which takes place a 1.8 to 2.5facher Vorverzug the filaments. That is, the default value of the default is increased compared to the usual Langstapeln Vorverzugswert, resulting in a better distortion distribution between main and Vorverzugsfeld.
  • Such a design has the particular advantage that the forces to be expended are placed more on the preliminary delay and thus the main delay is relieved.
  • the Fig.1 schematically shows a half-side cross-section of a ring spinning machine whose unillustrated side is mirror-inverted.
  • the ring spinning machine 1 on a pedestal 2, from which vertical uprights 3 extend upward, which carry suction ducts 4, which are preferably rectangular in cross-section.
  • the stanchions 3 also bridge pieces 5 are fixed, which in turn support two extending in the machine longitudinal direction, parallel support tubes 6, where the bearing housing 7 are fixed for a variety of ring spindles.
  • Fig.1 is shown schematically one of these ring spinning spindle, which is equipped with a spinning cop 8 during the spinning operation.
  • punches 9 which are each part of a drafting system 10 according to the invention.
  • the punches 9 are also attached to two extending in the machine longitudinal support tubes 11.
  • the ring spinning machine 1 further has vertically arranged support columns 13 for an original material gate 14.
  • a part of the movement mechanism 25 of the ring spinning machine 1 is also installed laterally. That is, in this area, the lifting devices for the ring rail 18, the balloon constriction rings 19 and the vertically displaceably mounted thread guide 20 are arranged.
  • a bobbin changing device 33 On a boom 32 of the pedestal 2 of the ring spinning machine 1, a bobbin changing device 33 is further arranged, which consists essentially of a plurality of shear systems with scissor arms 34 and 35, a gripper bar 36 and arranged on the gripper bar 36 tube grippers 37.
  • the scissors systems are actuated by means of a push / pull tube 38 which extends along the ring spinning machine 1.
  • the Fig.2 shows a first advantageous embodiment of a drafting system 10 according to the invention in detail.
  • Such drafting units 10 have, as is known, inter alia machine-length, drivable lower rollers 21 u, 22u and 23u and upper rollers 210, 220 and 230, the rest during the spinning operation on the lower rollers 21 u, 22u and 23u and friction of these get picked up.
  • the machine-length, drivable lower rollers 21u, 22u and 23u are mounted on slides 41 on punches 9 wherein the installation position of the lower roller 21u, 22u and 23u, that is, the distance of the carriage 41 to each other, by means of corresponding bolts 42 or the like.
  • the machine-length lower rollers 21 u, 22u and 23u are generally each composed of a plurality of roller segment pieces with a diameter of between 30 and 40 mm, wherein the roller segment pieces are provided with a structuring 40 in the region of their working surfaces.
  • such lower rollers 21 u, 22u and 23u are also, for example via a (not shown) reduction gear, connected to a machine end side arranged electromotive drive, that the speed of the lower rollers 21u, 22u and 23u can be predetermined. That is, by the rotation speed of the lower rollers 21u, 22u, and 23u, both the warp value in a pre-drafting field 43 lying between the pair of input rollers 21 and the center roller pair 22, and the warp value in a main drafting field 44 are disposed between the intermediate roller pair 22 and the pair of output rollers 23 defined adjustable.
  • a support 45 of the drafting system 10 is fixed to the punch 9 via a support rod 16, wherein on the support 45 via a rotation axis 46 each have a pendulum carrier 12 and a loading arm 17 of the drafting system 10 are stored.
  • the pendulum carrier 12 is limited movable attached to the axis of rotation 46 and can by means of the load arm 17 in three possible positions a) "loaded", b) “relieved” and c) "folded” positioned.
  • pendulum carrier 12 On pendulum carrier 12 are also, as known, mounted on corresponding (not shown) retaining elements in a paired arrangement, the top rollers 210, 220 and 230 of the drafting system 10.
  • the loading force that is, the force with which the upper rollers 21 o to 230 rest on their associated lower rollers 21u to 23u, by the construction of the pendulum carrier 12 (spring-loaded instead of pneumatically tensioned top rollers) and the adjustable pressure force of the top rollers can be predetermined and is for the output top rollers of the pendulum carrier 12 are greater than 35 daN and set to 25 daN for the input and middle top rollers 210 and 220
  • the top rollers 210, 220 and 230 preferably each have a diameter between 40 and 60 mm and are provided with a relatively abrasion resistant cover 30, the hardness of which is between 60 to 70 shore for the top rollers and 80 to 90 shore for the top and middle rollers ,
  • the drafting arrangement 10 also has a compacting device 28 for bundling separated and drawn filaments 27 and a device 29 for discharging the entire electrostatic charges resulting from the stretching process of the filaments 27.
  • the means 29 for discharging electrostatic charges for example, connected to one of the punches 9 of the drafting system 10 and grounded Such means for discharging electrostatic charges are not fundamentally new in connection with textile machines and, for example in the DE 1 229 426 C described in detail using a route.
  • compacting devices are basically known in connection with drafting systems of textile machines and described in detail in numerous patent applications in various embodiments.
  • a mechanical compression device for a drafting system is shown while in the DE 199 32 099 A1 a compression device is described, which has a negative pressure, reversing roller as the compression element.
  • a compacting device is described, in which a perforated belt is pulled around a driven roller and a guide housing, which in turn is connected to a vacuum source both in the compression device according to DE 199 32 099 A1 as well as in the compression device according to DE 100 08 610 A1 the compaction of the warped fiber strand occurs pneumatically.
  • a compression device 28 is installed, which is connected via a pneumatic line 50 to a vacuum source 52 and forms a compression zone 39, in the region of the separate filament strand 27 is pneumatically bundled.
  • the punch 9 is provided with a bearing means 47 for a carriage 41, in which a preferably machine-length, machine-end driven Compaction lower roller 48 is mounted, which drives a compression upper roller 49 frictionally via a rotatably mounted intermediate roller 48a and a drivable, perforated belt 51
  • the perforated belt 51 in this case comprises a guide housing 60 installed in the region of the bearing device 47, which is connected via a pneumatic line 50 to a vacuum source 52.
  • an airflow 53 entering the vacuum-pressurized guide housing 60 via the circumferential, perforated belt 51 ensures that the separated filament pieces 27 are bundled substantially parallel in the region of the compression zone 39, so that they are arranged by means of a subsequently arranged Ring spinning spindle to a thread 26 are spinnable.
  • the drafting system 10 may also have some mechanical guiding and compacting devices.
  • the drafting system 10 may, for example, a so-called input compressor 56, an apron compressor 57 and a main field compressor 58, wherein in the region of the main drafting zone 44 also a guide rail 55 may be installed, which is so spaced from the pair of output rollers 23 that fibers in the cleaning process by a Wanderbläser Do not be jammed here and lead to thread breaks.
  • a compression device 28 is installed following the pair of output rollers 23 having a under horrbeetzbare rotatably mounted compression top roller 59 and the compression-Oberwatze 59 is connected via a Pneurhatiktechnisch 50 to a vacuum source 52 and processed during the spinning operation the separated (not shown here) filament strand 27 pneumatically.
  • the punch 9 is equipped with a bearing device 47 in which a preferably machine-length, machine-end-driven compression bottom roller 48 is mounted, on which the compacting upper roller 59 druckallonsaufschlagbarbar.
  • the compression top roller 59 is mounted for example on the pendulum carrier 12 and connected via a pneumatic line 50 to a vacuum source 52.
  • the compaction top roller 59 is equipped with a perforation 31, which ensures that the separated filament pieces 27 are bundled in parallel, so that they can be spun on a subsequently arranged ring spinning spindle to form a thread.

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

Claims (10)

  1. Banc d'étirage pour un métier à filer, destiné à rompre et étirer des filaments, avec au moins une paire de cylindres d'entrée (21), une paire de cylindres centraux (22) et une paire de cylindres de sortie (23), sachant que les paires de cylindres tournent à des vitesses de rotation différentes, que les cylindres inférieurs (21u, 22u, 23u) sont réalisés sous la forme d'arbres partiellement striés et que les cylindres supérieurs (21o, 22o, 23o) sont montés dans un support oscillant (12),
    caractérisé en ce que les surfaces de toutes les paires de cylindres (21, 22, 23) du banc d'étirage (10) sont respectivement en contact entre elles sans intercalation de lanières, afin de guider les filaments (27) par serrage, de les rompre au moyen de leurs vitesses de rotation différentes et de les étirer en formant des fibres discontinues,
    en ce que la force de sollicitation des cylindres supérieurs d'entrée et centraux (21o, 22o) est supérieure à 25 daN,
    en ce que la force de sollicitation des cylindres supérieurs de sortie (23o) est supérieure à 35 daN,
    et en ce qu'un dispositif de compactage (28) est installé en aval de la paire de cylindres de sortie (23) dans la direction de transport des filaments (27).
  2. Banc d'étirage selon la revendication 1, caractérisé en ce qu'un dispositif (29) destiné à évacuer les charges électrostatiques est raccordé au banc d'étirage (10).
  3. Banc d'étirage selon la revendication 1, caractérisé en ce que les cylindres supérieurs (21o, 22o, 23o) sont respectivement dotés d'un revêtement qui présente une dureté Shore de 60 à 90.
  4. Banc d'étirage selon la revendication 3, caractérisé en ce que le revêtement des cylindres supérieurs de sortie (23o) présente une dureté Shore de 60 à 70 et le revêtement des cylindres supérieurs d'entrée et centraux (21o, 22o) présente une dureté Shore de 80 à 90.
  5. Banc d'étirage selon la revendication 1, caractérisé en ce que les cylindres supérieurs (21o, 22o, 23o) présentent respectivement un diamètre de 40 à 60 mm.
  6. Banc d'étirage selon la revendication 1, caractérisé en ce que les cylindres inférieurs (21u, 22u, 23u) présentent respectivement un diamètre de 30 à 40 mm.
  7. Banc d'étirage selon la revendication 1, caractérisé en ce que le dispositif de compactage (28) est raccordé à une source de dépression (52) par l'intermédiaire d'une conduite pneumatique (50).
  8. Banc d'étirage selon la revendication 7, caractérisé en ce que le dispositif de compactage (28) dispose d'une lanière rotative perforée (51) pouvant être entraînée, qui s'enroule autour d'un carter de guidage (60) pouvant être sollicité en dépression.
  9. Banc d'étirage selon la revendication 7, caractérisé en ce que le dispositif de compactage (28) dispose d'un cylindre supérieur de compactage rotatif perforé (59) pouvant être sollicité en dépression.
  10. Banc d'étirage selon la revendication 1, caractérisé en ce que la paire de cylindres d'entrée (21) et la paire de cylindres centraux (22) forment un champ d'étirage préparatoire dans lequel se produit un étirage préparatoire des filaments (27) de 1,8 à 2,5 fois.
EP13003034.9A 2012-07-06 2013-06-13 Banc d'étirage pour un métier à tisser Not-in-force EP2682509B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210013574 DE102012013574A1 (de) 2012-07-06 2012-07-06 Streckwerk für eine Spinnmaschine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102012013574 Previously-Filed-Application 2012-07-06

Publications (3)

Publication Number Publication Date
EP2682509A2 EP2682509A2 (fr) 2014-01-08
EP2682509A3 EP2682509A3 (fr) 2015-05-06
EP2682509B1 true EP2682509B1 (fr) 2017-02-01

Family

ID=48669745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003034.9A Not-in-force EP2682509B1 (fr) 2012-07-06 2013-06-13 Banc d'étirage pour un métier à tisser

Country Status (4)

Country Link
EP (1) EP2682509B1 (fr)
CN (1) CN103526352A (fr)
DE (1) DE102012013574A1 (fr)
ES (1) ES2614476T3 (fr)

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DE102015014421A1 (de) * 2015-10-22 2017-04-27 Saurer Germany Gmbh & Co. Kg Streckwerk und Lager für eine Welle eines Streckwerkes
CH714445A1 (de) * 2017-12-15 2019-06-28 Rieter Ag Maschf Streckwerk für eine Spinnmaschine mit einer Verdichtungsvorrichtung.
CN108589022B (zh) * 2018-07-02 2023-12-05 海安国洋机械科技有限公司 金属纤维拉断喷射装置
CN110067059B (zh) * 2019-05-22 2021-10-29 安徽翰联色纺股份有限公司 复合混纺纱的生产方法
DE102020131090A1 (de) * 2020-11-24 2022-05-25 Maschinenfabrik Rieter Ag Verfahren zur Durchführung eines automatischen Kannenwechselvorgangs an einer Spinnstelle einer Spinnmaschine sowie Spinnmaschine und verfahrbarer Kannenwechsler

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US2077320A (en) * 1933-09-05 1937-04-13 Celanese Corp Manufacture of staple fiber yarns from continuous filaments
GB484192A (en) * 1936-07-31 1938-05-02 William Pool Improvements in and relating to the conversion of continuous filaments into staple fibres
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Also Published As

Publication number Publication date
EP2682509A2 (fr) 2014-01-08
EP2682509A3 (fr) 2015-05-06
ES2614476T3 (es) 2017-05-31
CN103526352A (zh) 2014-01-22
DE102012013574A1 (de) 2014-05-22

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