EP2767625B1 - Spinnstelle einer spinnmaschine - Google Patents

Spinnstelle einer spinnmaschine Download PDF

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Publication number
EP2767625B1
EP2767625B1 EP14154817.2A EP14154817A EP2767625B1 EP 2767625 B1 EP2767625 B1 EP 2767625B1 EP 14154817 A EP14154817 A EP 14154817A EP 2767625 B1 EP2767625 B1 EP 2767625B1
Authority
EP
European Patent Office
Prior art keywords
compressed air
spinning
additive
yarn
metering
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
EP14154817.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2767625A1 (de
Inventor
Götz Theodor Gresser
Andreas Fischer
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
Priority claimed from CH00445/13A external-priority patent/CH707561A1/de
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP2767625A1 publication Critical patent/EP2767625A1/de
Application granted granted Critical
Publication of EP2767625B1 publication Critical patent/EP2767625B1/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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist

Definitions

  • the invention relates to a spinning station of an air jet spinning machine for spinning a fiber structure into a yarn.
  • the spinning station has a compressed air supply line, a delivery roller pair and a spinneret, wherein the spinneret has a housing with compressed air injections, a Garn Strukturselement and a nozzle interior.
  • the fiber structure is fed to the delivery roller pair of the spinneret. Subsequently, a yarn is formed by the yarn formation element with a vortex flow generated by the compressed air injections from the fiber structure.
  • Air jet spinning machines with appropriately equipped spinning stations are known in the art and serve to produce a yarn from an elongated fiber structure.
  • the outer fibers of the fiber composite are wound around the inner core fibers in the area of an inlet mouth of the yarn formation element by means of a vortex air flow generated via compressed-air injections within the spinneret, and finally form the binder fibers which determine the desired strength of the yarn.
  • This creates a yarn with a rotation, which finally discharged via a Garn Adjustskanal from the spinneret and z. B. can be wound on a spool.
  • yarn is generally to be understood as a fiber structure in which at least some of the fibers are wound around an inner core.
  • So z. B a yarn in the conventional sense, which can be processed for example by means of a loom to a fabric.
  • the invention relates to spinning stations of air jet spinning machines, with the help of so-called roving (other name: Lunte) can be produced.
  • roving other name: Lunte
  • This roving is characterized by the fact that, despite a certain strength, sufficient to roving to transport to a subsequent textile machine, is still delayable. The roving can thus with the help of a defaulting device, z.
  • a roving processing textile machine such as a ring spinning machine
  • yarn is to be understood as meaning a yarn or roving produced with an air jet spinning machine.
  • man-made fibers for example polyesters, or blends of natural and man-made fibers
  • deposits are formed on the surface of the yarn-forming element.
  • the production of man-made fibers comprises a so-called preparation of the continuous fibers during the manufacturing process, while a spin finish, usually oils with various additives, is applied to the continuous fibers, which enables a treatment such as stretching the continuous fibers at high speeds. Some of these preparation agents remain adhering to the chemical fibers in the further treatment and lead to impurities in the air jet spinning machine.
  • the fibers supplied to the air jet spinning machine in the form of a fiber structure are usually supplied to the spinneret by a delivery roller pair.
  • the delivery roller pair may correspond to an output roller pair of a drafting system. Used drafting systems serve to refine the submitted fiber structure before entering the spinneret.
  • a fiber guide element is arranged, via which the fiber structure is guided into the spinneret to the yarn-forming element.
  • Garn Guesssetti spindles are used with an inner yarn guide channel majority.
  • compressed air is introduced through the housing wall of the spinneret such by the compressed air nozzles in the spinneret interior, that there is a rotating fluidized air flow. This results in that from the fiber strand leaving the fiber guide element individual outer fibers are separated and turned over the top of Garn Struktursettis. In the further course, these removed fibers rotate on the surface of the yarn-forming element.
  • the EP 2 450 478 discloses a device which allows automatic cleaning without stopping the machine.
  • an additive is added to the compressed air used for the formation of the fluidized air flow within the spinneret.
  • the additive is fed through the compressed air into the spinneret and causes a cleaning of the affected surfaces.
  • a disadvantage of the disclosed cleaning system is that an additional compressed air supply to all spinning stations of the air jet spinning machine is necessary and conditional for the supply of the additive As a result, a complicated regulation of the metering of the additive is to be provided in order to avoid overdosing of the additive when individual spinning stations are at a standstill.
  • Another embodiment of a cleaning of the Garn Struktursiatas discloses the JP-2008-095-208 , An additive is also supplied to the compressed air used for the turbulence in the spinneret and passed with this compressed air in the spinneret and thus to the Garn Strukturselement.
  • the dosage and addition of the additive is separately provided for each spinning station in the disclosed embodiment.
  • EP 2 302 114 A2 describes an air-spinning machine, which also allows an additive addition in the compressed air supply to the spinning stations.
  • a second compressed air supply is provided to provide the spinning stations alternately with pure compressed air or with additive offset air.
  • a disadvantage of the prior art is that a direct metering of the additive takes place. As a result, an exact dosage mur is possible by means of a complex control. In addition, a pressurized additive storage is necessary, which leads to high safety and operating expenses when using various additives.
  • the object of the invention is to provide a spinning station with a device which allows a cleaning of the Garn Struktursiatas and the Spinndüseninnenraums with the aid of an additive, wherein a simple metering of the additive should take place, which also allows a pressureless storage of the additive.
  • the spinning station has a compressed air supply line, a delivery roller pair and a spinneret, wherein the spinneret has a housing with compressed air injections, a Garn Strukturselement and a nozzle interior.
  • the fiber structure is fed to the delivery roller pair of the spinneret.
  • a yarn is formed by the yarn formation element with a vortex flow generated by the compressed air injections from the fiber structure.
  • a supply of a liquid additive in the compressed air supply with a dosage wherein the dosage of the liquid additive has a metering pump with a metering range of 0.01 ml to 1.0 ml per minute.
  • Air jet spinning machines usually have several spinning stations. At each spinning station, a yarn is produced independently of the other spinning stations from a submitted fiber structure. The independence of the individual spinning stations from each other can go so far that different yarns or yarns made of different materials can be produced on adjacent spinning stations.
  • the presented fiber structure consists of an accumulation of individual fibers, which are aligned in the longitudinal direction of the fiber structure.
  • the fibers of a fiber structure can consist of different materials. Frequently used are manmade fibers made of various types of synthetic materials and cotton fibers and mixtures thereof.
  • chemical fibers or blends with chemical fibers, such as polyester fibers build up within the spinneret impurities, which have their origin in the production of man-made fibers. These adhesions carried by the fibers can not be avoided due to the manufacturing process. Also can not be avoided the formation of deposition by damaged fiber.
  • the spinning station of an air jet spinning machine for spinning a fiber strand into a yarn has at least one pair of delivery rolls and one Spinneret on.
  • the delivery roller pair may correspond to the pair of output rollers of this drafting system in the presence of a drafting system.
  • the spinneret has a yarn-forming element, which is arranged in a housing. Compressed air injections provided in the housing introduce compressed air into the spinneret interior. The compressed air injections are arranged in such a way that a rotating fluidized air flow results in the housing, which with the aid of the yarn formation element leads to the transformation of the fiber structure into a yarn or roving.
  • the necessary for the operation of the spinnerets compressed air is generated by a compressed air source and fed via compressed air supply lines to the compressed air supply to each spinning station.
  • the compressed air supply to a spinning station leads the compressed air to the compressed air injections which are arranged in the housing of the spinneret.
  • the supply of the additive takes place in the compressed air supply of a spinneret and has a dosage with a metering pump.
  • the additive is introduced via an Additiveindüsung in a compressed air supply line, which leads to the compressed air supply.
  • the supply of the additive in the compressed air supply takes place before a distribution of the compressed air flow to the various compressed air injections of the spinneret.
  • the dosing pump is designed as a gear pump, peristaltic pump or diaphragm pump.
  • the metering pump generates the pressure necessary for the additive injection. Via an additive feed, the additive is fed by the pump to the additive injection, through which the additive passes into the compressed air supply line.
  • the design of the outlet opening of the Additiveindüsung in the compressed air supply line can be designed in many ways. For example, it may be oblique to the course of the compressed air supply line. Also is a nozzle shape or a wide outlet opening conceivable. Also, the outlet opening can be additionally provided with a spray head. A spray head serves to better distribution of the additive by dissolution of the additive into fine components.
  • the spinning performance of today's air jet spinning machines is between 200 m and 600 m yarn per minute.
  • the metered amount of the additive to be added is to be adjusted.
  • the amount of additive of the respective spinning performance of a spinning station can be adjusted.
  • the dosage depends on the properties of the additive to be dosed and the material to be spun.
  • the type of additive includes both liquids or solid particles or gaseous media as well as all mixtures thereof.
  • a cleaning liquid or water or water with the admixture of a cleaning liquid is advantageous in the case of heavy contamination of the yarn-forming element.
  • solid particles for cleaning it is also the addition of solid particles for cleaning conceivable.
  • additives which are added to the fiber structure can be used to achieve certain effects in the yarn produced. It is also possible in the combination of the choice of material of the fiber structure and the corresponding additive to reinforce certain yarn properties, such as the strength or the appearance, or to change compared to a yarn production with the same fiber structure without the addition of an additive. Due to this aspect, an addition of an additive is also useful if no cleaning of Garn Struktursijns is necessary, as is the case with the processing of natural fibers, such as cotton.
  • the metering pump according to the invention has a metering range of 0.01 ml to 1.0 ml per minute.
  • an intermittent dosage for example by switching on and off the metering pump, is provided. Due to the material of the fiber structure to be processed, the duration of an additive supply and the necessary interval between the dosages can be determined by the satisfactory cleaning of Garn Guesssides and the spinneret interior is achieved without affecting the properties of the yarn produced sustainable. However, it can also be provided a continuous supply of the additive.
  • the additive supply has a switchover between different additives.
  • This has the advantage that when a supply of an additive for the purpose of cleaning a short additional addition of a substance for the removal of residues formed by the additive, for example in the compressed air leading parts, possible without the addition of the additive for this purpose rebuild to have to.
  • various additives can be provided due to a material change.
  • the object is also achieved by a method for supplying an additive in the compressed air supply to a spinneret at a spinning station of an air jet spinning machine with a delivery roller pair and a spinneret in that a liquid additive is injected into the compressed air supply to a compressed air supply, wherein the liquid additive with a Metering is metered before the additive injection, which has a metering range of 0.01 ml to 1.0 ml per minute.
  • the metering device can be controlled such that the supply of the additive is adjusted in accordance with the instantaneous spinning performance of the spinning station.
  • an air jet spinning machine with a single or several spinning stations can be equipped with appropriate means for supplying an additive.
  • a switching between the supply of different additives or different means for supplying the additive to the fiber structure at a single spinning station or different spinning stations is provided.
  • FIG. 1 shows a schematic representation of a spinning station 1 of an air jet spinning machine.
  • the spinning station 1 shown has a spinneret 5 and a pair of delivery rollers 4.
  • the spinneret 5 has a housing 6 and a Garn Strukturselement 7 located at least partially in the housing 6 with a Garn arrangementskanal 8.
  • the housing 6 is opposite to the delivery roller pair 2 penetrated by a fiber guide element. 9
  • the spinning station 1 is supplied via a compressed air supply line 11 with compressed air. From the compressed air supply line 11, the compressed air via the compressed air supply 12 to the compressed air injections 13.
  • the compressed air injections 13 are arranged such that the passing through them in the Spinndüseninnraum 20 compressed air, a rotating vortex flow 14 is generated at the top of Garn Strukturselements 7.
  • the fiber structure 2 is fed through the delivery roller pair 4 of the spinneret 5.
  • the fiber structure 2 is guided by the fiber guide element 9 into the spinneret interior 20.
  • individual outward fibers 15 are removed from the fiber structure 2 by the turbulence flow 14. Since the individual fibers 15 are grasped by one end of the yarn formation element 7, the other end of the individual fibers 15 is turned over the tip of the yarn formation element 7 and subsequently wound around the unaffected internal fibers of the fiber structure 2.
  • the resulting yarn 3 is discharged from the spinneret 5 through a yarn guide channel 8 disposed inside the yarn forming member 7.
  • the delivery roller pair 4 may be identical to the delivery roller pair of an upstream drafting system (not shown). Also, at the outlet of the spinneret 5, a Austragswalzencru (not shown) may be arranged.
  • an additive injection 19 is provided in the compressed air supply line 11 .
  • the additive is transported by an additive supply 16 with a metering pump 18 via an additive feed 17 to the additive injection 19.
  • the additive is entrained in the direction of the compressed air supply 12 and distributed through the latter into the compressed air injections 13.
  • the introduced by the compressed air injections 13 in the spinneret interior 20 additive is characterized by in the spinneret interior 20 prevailing vortex flow 14 at the contaminated surfaces of Garnsentettis 7 and the spinneret interior 20 along.
  • the additive supply 17 the additive for Additiveindüsung 19 is performed.
  • the additive injection 19 is adapted in its shape, extent and arrangement to the amount to be metered as well as to the type of additive used.
  • the metering pump 18 the amount of the additive as well as the time period of an additive addition is regulated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP14154817.2A 2013-02-13 2014-02-12 Spinnstelle einer spinnmaschine Not-in-force EP2767625B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00445/13A CH707561A1 (de) 2013-02-13 2013-02-13 Spinnstelle einer Luftdüsenspinnmaschine.
CH18862013 2013-11-12

Publications (2)

Publication Number Publication Date
EP2767625A1 EP2767625A1 (de) 2014-08-20
EP2767625B1 true EP2767625B1 (de) 2017-01-11

Family

ID=50101743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14154817.2A Not-in-force EP2767625B1 (de) 2013-02-13 2014-02-12 Spinnstelle einer spinnmaschine

Country Status (3)

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EP (1) EP2767625B1 (ja)
JP (1) JP2014152438A (ja)
CN (1) CN103981606B (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709467A1 (de) * 2014-04-03 2015-10-15 Rieter Ag Maschf Spinnstelle einer Luftspinnmaschine sowie Aufsatz für die Fixierung an einer Spinndüse einer Luftspinnmaschine.
KR101621871B1 (ko) * 2015-04-20 2016-05-17 한국섬유개발연구원 분섬노즐부를 가지는 링방적기 및 그에 의한 세번수 방적사 제조방법
JP2017002431A (ja) * 2015-06-11 2017-01-05 村田機械株式会社 紡績機及び紡績方法
DE102015120437A1 (de) * 2015-11-25 2017-06-01 Maschinenfabrik Rieter Ag Luftspinnmaschine sowie Verfahren zum Betrieb derselben
CZ29192U1 (cs) * 2015-12-09 2016-02-22 Rieter Cz S.R.O. Distribuční systém vlhčicí kapaliny pro spřádací trysky tryskového dopřádacího stroje
CN105951225B (zh) * 2016-06-22 2018-01-16 陕西宝成航空仪表有限责任公司 用于全自动智能纺纱机喷嘴的自动清洁系统
DE102017116893A1 (de) * 2016-07-28 2018-02-01 Rieter Ingolstadt Gmbh Fadenführungseinheit, Offenend-Spinnmaschine und Verfahren zum Betreiben einer Spinnstelle
DE102017113257A1 (de) * 2017-06-16 2018-12-20 Maschinenfabrik Rieter Ag Arbeitsstelle einer Luftspinnmaschine sowie Verfahren zum Öffnen einer Spinndüse
CN109319595A (zh) * 2018-11-23 2019-02-12 浙江天祥新材料有限公司 一种加弹机的导丝装置
JP7425695B2 (ja) * 2019-07-30 2024-01-31 Ｔｍｔマシナリー株式会社 合繊糸用糸継システム
CN111424345B (zh) * 2020-03-31 2021-08-31 江苏新诚誉纺织科技有限公司 一种穿点定位上线纺织机械的纺纱方法
EP4015680A1 (de) 2020-12-18 2022-06-22 Saurer Intelligent Technology AG Reinigungsvorrichtung für ein garnbildungselement einer luftspinndüse sowie verfahren zum reinigen eines solchen garnbildungselements

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JP2008095208A (ja) * 2006-10-06 2008-04-24 Murata Mach Ltd 空気紡績装置

Also Published As

Publication number Publication date
CN103981606B (zh) 2018-07-10
EP2767625A1 (de) 2014-08-20
JP2014152438A (ja) 2014-08-25
CN103981606A (zh) 2014-08-13

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