EP2035606B1 - Doppeldraht-zwirnspindel mit druckluftbetätigter einfädelvorrichtung - Google Patents

Doppeldraht-zwirnspindel mit druckluftbetätigter einfädelvorrichtung Download PDF

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Publication number
EP2035606B1
EP2035606B1 EP07725354.0A EP07725354A EP2035606B1 EP 2035606 B1 EP2035606 B1 EP 2035606B1 EP 07725354 A EP07725354 A EP 07725354A EP 2035606 B1 EP2035606 B1 EP 2035606B1
Authority
EP
European Patent Office
Prior art keywords
twisting spindle
compressed air
injector
connection element
spindle according
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
EP07725354.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2035606A1 (de
Inventor
Heinz Fink
Georg Tetzlaff
Sergei Singer
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 EP2035606A1 publication Critical patent/EP2035606A1/de
Application granted granted Critical
Publication of EP2035606B1 publication Critical patent/EP2035606B1/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
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/88—Hollow-spindle arrangements

Definitions

  • the invention relates to a double-twisting spindle with pneumatically operated threading device according to the preamble of claim 1.
  • the thread is usually withdrawn from the stationary supply spool up, introduced into the upper end of a thread inlet tube, deflected downward and guided by a thread brake in the spindle rotor or in the spindle shaft, which he again through a Fadenleitkanal in the radial direction leaves.
  • the thread After emerging from the Fadenleitkanal the thread is guided upward and forms a twisting around the supply spool balloon. The thread then passes through a thread guide and is twisted twisted onto a package.
  • the DE 3012427 C2 discloses a double-twisting spindle with a pneumatically operated threading device in which the spindle rotor has a coaxially extending connecting channel through which compressed air is supplied.
  • the compressed air entering the connecting channel during the threading process flows through the injector and, in the hollow spindle in the upper part of the spindle rotor, generates the suction required for sucking the thread. After completion of the Einfädelvorgangs the compressed air supply is interrupted again.
  • the generic DE 10250423 A1 shows a double-twisting spindle with a compressed air-operated threading device, in which the compressed air channel is performed in the lower part of the spindle shaft initially centric and before reaching the yarn storage disc as an oblique bore.
  • An air channel in an injector element adjoins the compressed air channel in the spindle shaft, which opens into the thread channel as an injector and generates the required air flow radially outwards in the latter.
  • the EP 0 795 634 A2 discloses a double twisting spindle according to the preamble of claim 1.
  • the injector is formed as a separate component and includes a curved air duct through which compressed air is supplied.
  • the manufacturing costs of these known designs are high. In particular, the production of the channels in the spindle shaft is expensive.
  • the efficiency of the known designs is insufficiently low.
  • a measure of the efficiency is the static or the dynamic negative pressure, which can be generated in the thread inlet tube or in the thread channel depending on the pressure of the pressure source used. ever lower while the pressure of the compressed air source to achieve a sufficiently high vacuum for sucking the thread, the more economical or efficient the threading is feasible.
  • the formation of the air duct in the known designs for the thread channel limits the efficiency.
  • the abrupt deflection of the air flow by approximately 90 ° or more causes the compressed air emerging from the compressed air duct first to strike the wall of the injector element perpendicularly before the compressed air flow is deflected and accelerated in the injector element.
  • the turbulence occurring in the deflection reduce the efficiency of the injector, since the compressed air supply must be made with a higher pressure to compensate for this effect.
  • the compressed air supply comprises a connecting element with a curved air channel which connects the supply bore with the injector, and wherein the connecting element is formed as a separate component and the air duct is adapted to the fluidic requirements.
  • the executed as a separate component connecting element has the significant advantage that it can be easily designed in aerodynamically optimized manner to contribute to the optimization of the compressed air-operated threading device.
  • the production is easy and inexpensive.
  • the inventive fluidic design of the compressed air supply increases the injector effect.
  • the pressure of the compressed air source can be lowered in comparison to known devices, without the negative pressure generated for the suction of the thread decreases.
  • the negative pressure increases at the same pressure of the compressed air source, so that the suction effect is increased to the thread.
  • a calming of the compressed air entering the air duct of the connecting element is achieved by reducing occurring turbulences of the compressed air during the flow through the air duct, which occur after the abrupt deflection on exiting the feed bore into the connecting element. This effect also contributes to be able to reduce the air pressure of the supplied compressed air, without reducing the efficiency of the implementation of the Einfädelvorganges.
  • the injector effect in the injector element is improved at a reduced pressure compared to the prior art, which increases the economic efficiency of the twin-wire twisting spindle with compressed air-operated threading device.
  • Advantageous embodiments of the connecting element according to one of claims 2 to 7 contribute to the particularly streamlined supply of compressed air to the injector and increase the effect of the injector element.
  • the spindle shaft and the thread guide ring preferably have recesses into which the connecting element can be inserted.
  • the angular position of the Fadenleitrings on the spindle shaft is adjustable and fixable by the inserted connection element. If the thread guide ring has been pushed with its recess over the connecting element, the Fadenleitkanal and the output of the injector element are aligned. A rotation of spindle shaft and Fadenleitring each other is not possible in the assembled state, since the inserted connection element acts as a rotation.
  • a connecting element which consists of two firmly interconnected components, which are mirror images of each other, is simple and less expensive to produce compared with a one-piece connector.
  • connection element is made of glass fiber reinforced plastic, it can be produced inexpensively, has little weight and is durable.
  • a sealing ring in each case between the connecting element and the spindle shaft and between the connecting element and the injector element is an inexpensive and functionally reliable sealing of the compressed air supply.
  • the formation of the connecting element as a separate component allows easy production and adjustment of the air duct to the fluidic requirements. This contributes to cost, a double-twisting spindle according to the invention to be able to produce. The economy in threading is improved by low compressed air consumption, which is possible due to the increased injector.
  • FIG. 1 is a double-twisting spindle with a spindle bearing 1 shown.
  • the integrally formed spindle shaft 2 is rotatably supported in the bearing housing 4 by means of a ball bearing 3.
  • the bearing housing 4 is fixed to the spindle bank 5.
  • the spindle shaft 2 carries a Antriebswirtel 6, a Fadenleitring 7 and a bobbin 8 with bobbin base 9 and hollow hub 10.
  • the hollow hub 10 is mounted by means of ball bearings 11, 12 on the spindle shaft 2 and has a coaxial thread tube 13.
  • the thread tube 13 opens into the upper hollow shaft 14 of the spindle shaft 2 a.
  • the spindle shaft 2 is rotatable about the vertical axis of rotation 15.
  • Transverse to the axis of rotation 15 extends through the spindle shaft 2 continuous recess with an oval cross-section.
  • an injector 16 is inserted from plastic. It can be inexpensive as a molded part and accurately, according to the fluidic requirements, are produced.
  • the thread channel 17 of the injector element 16 connects the upper hollow shaft 14 of the spindle shaft 2 with the Fadenleitkanal 18 of Fadenleitringes 7. In the thread channel 17, both the air flow during threading and the thread is deflected. The thread runs over a deflection element 19 made of ceramic.
  • the horizontal and thus at right angles to the axis of rotation 15 of the spindle shaft 2 extending Fadenleitkanal 18 of Fadenleitringes 7 has at its outer end a yarn guide 29 made of ceramic.
  • the thread guide ring 7 carries the turntable 28.
  • the bobbin base 9 is rotatable relative to the spindle shaft 2 and is held at a rotating spindle shaft 2 in its position to the bearing housing 4 and the spindle bank 5 by magnetic force of permanent magnets 41.42 with inferences.
  • the injector 16 is temporarily connected to a compressed air source 20.
  • the air flow in the compressed air line 21 can be interrupted by means of a shut-off device 22.
  • the pipe mouth 23 of the leading from the compressed air source 20 to the spindle shaft 2 compressed air line 21 is arranged stationarily below the spindle shaft 2.
  • Such a stationary arranged compressed air supply to the spindle shaft 2 is for example in the DE 3012427 C2 described in detail.
  • the compressed air line 21 terminates at a short distance from the supply bore 24 of the spindle shaft 2. In this embodiment can be dispensed with seals between the pipe mouth 23 and the spindle shaft 2. Compressed air losses are largely avoided.
  • the compressed air is first fed to the spindle shaft 2 in the feed bore 24 running coaxially to the axis of rotation 15.
  • the feed bore 24 opens into a transverse bore 25.
  • the transverse bore 25 is connected via the air channel 26 of the connecting element 27 with the injector 16.
  • the air channel 26 is semicircular.
  • the midline 37 the air channel 26 and the axis of rotation 15 of the spindle shaft 2 lie in one plane.
  • the semicircle formed by the center line 37 has a radius between 3 mm and 6 mm.
  • FIG. 2 shows the connecting element 27 and the injector 16 in the unassembled state.
  • the air channel 26 is largely semicircular.
  • the deflection in the connecting element 27 is 180 °.
  • the air channel 26 has a circular cross-section and has at its entrance a larger cross section than at its output, which rests in the assembled state on the injector 16. Accordingly, the air duct diameter D E at the inlet of the air duct 26 is greater than the air duct diameter D A at the outlet of the air duct 26.
  • the connecting element 27 for receiving sealing rings 30, 31 is formed.
  • the injector 16 includes an injector bore 32 in the thread channel 17th opens and which is directed to the yarn guide channel 18.
  • the Injektorbohrung 32 and the Fadenleitkanal 18 are arranged in alignment.
  • the diameter of the injector bore 32 is significantly smaller than the diameter of the thread channel 17. This creates a step 40, as in FIG. 1 shown.
  • the air emerging from the injector bore 32 as an injector jet can flow freely in the direction of the yarn guide channel 18.
  • the straight injector bore 32 has a constant diameter.
  • Such Injektorbohrung 32 with a length between 5 mm and 6 mm allows a homogenization of the injector jet.
  • the thread channel mouth 33 is adapted to the circular shape of the cross section of the spindle shaft 2 and opens directly into the Fadenleitkanal 18 a.
  • the deflecting element 19, which is exposed to the friction by the running thread, is pressed into the injector 16 and held by the resilient retaining tabs 34, 35.
  • the deflecting element 19 forms the upper wall of the thread channel 17 in the installed state, as in FIG. 1 shown. While the injector element 16 is made of plastic, the deflecting element consists of highly wear-resistant ceramic.
  • FIG. 3 shows a connecting element half 36.
  • the center line 37 of the air duct 26 extends at the entrance of the air duct 26 in a straight line, then semicircular and at the outlet of the air duct 26 again in a straight line. Also clearly visible in this illustration is that the air duct diameter D E at the inlet of the air duct 26 is significantly larger than the air duct diameter D A at the outlet of the air duct 26.
  • connecting element half 36 and a mirror-image second connecting element half are joined together to form the connecting element 27 in such a way that the air duct 26 forms with a circular cross section.
  • the connecting element half 36 and the second connecting element half are made of plastic, the connecting element 27 can be produced from the two components, for example by means of ultrasonic welding. In this way, simple molds for the injection molding process can be used and the production becomes cheaper.
  • the shut-off device 22 is opened and the compressed air flows from the compressed air source 20 through the compressed air line 21, the feed bore 24 and the transverse bore 25 in the connecting element 27 and from there through the Injektorbohrung 32 in the thread channel 17.
  • the injected from the Injektorbohrung 32 air generates an air flow to the output the Fadenleitkanals 18 and a negative pressure in the thread tube 13, which propagates, for example, to the mouth of the thread inlet tube.
  • the ready held end of the thread is sucked by the negative pressure in the thread inlet tube and the thread tube 13, deflected at the deflecting element 19 and further promoted by the air flow through the Fadenleitkanal 18.
  • the thread exits with the air flowing out there and can then be detected manually by the operator.
  • the shut-off device 22 is activated and the connection between the compressed air source 20 and injector bore 32 is interrupted again.
  • the inventive design of the double-twisting spindle allows the air pressure of the compressed air source 20 in comparison to a known training, as they DE 10250423 A1 shows, for example, reduce from 3 bar to 1.7 bar, without the negative pressure with which the thread is sucked, is lower. This reduces the air consumption during threading by 60 to 70%. The lower air consumption leads to increased efficiency of the double-twisting spindle according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP07725354.0A 2006-06-24 2007-05-18 Doppeldraht-zwirnspindel mit druckluftbetätigter einfädelvorrichtung Not-in-force EP2035606B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006029055A DE102006029055A1 (de) 2006-06-24 2006-06-24 Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung
PCT/EP2007/004446 WO2007147468A1 (de) 2006-06-24 2007-05-18 Doppeldraht-zwirnspindel mit druckluftbetätigter einfädelvorrichtung

Publications (2)

Publication Number Publication Date
EP2035606A1 EP2035606A1 (de) 2009-03-18
EP2035606B1 true EP2035606B1 (de) 2016-08-24

Family

ID=38330779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725354.0A Not-in-force EP2035606B1 (de) 2006-06-24 2007-05-18 Doppeldraht-zwirnspindel mit druckluftbetätigter einfädelvorrichtung

Country Status (5)

Country Link
US (1) US7908839B2 (zh)
EP (1) EP2035606B1 (zh)
CN (1) CN101473077B (zh)
DE (1) DE102006029055A1 (zh)
WO (1) WO2007147468A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013795A1 (de) 2010-04-03 2011-10-06 Oerlikon Textile Gmbh & Co. Kg Doppeldraht-Zwirnspindel
US9587815B2 (en) 2011-03-30 2017-03-07 Philips Lighting Holding B.V. End cap for a tubular light source
JP6133269B2 (ja) 2011-03-30 2017-05-24 フィリップス ライティング ホールディング ビー ヴィ 管状光源のための端部キャップ
CN104937338B (zh) 2013-01-24 2018-11-23 飞利浦照明控股有限公司 用于管状光源的端盖
CN103541069A (zh) * 2013-09-26 2014-01-29 吴江伊莱纺织科技有限公司 一种气动穿纱锭子
DE102014018038A1 (de) * 2014-12-05 2016-06-09 Saurer Germany Gmbh & Co. Kg Mehrfachdraht-Zwirnspindel für Zwirnmaschinen
CN105671708B (zh) * 2016-04-18 2018-08-03 安徽日发纺织机械有限公司 一种电锭气动锭子
CN106087144B (zh) * 2016-07-29 2018-07-24 浙江天竺纺机有限公司 一种纱线的加捻装置
CN106367856B (zh) * 2016-11-17 2019-01-22 安徽日发纺织机械有限公司 一种大卷装气动穿纱倍捻锭子
CN107299422B (zh) * 2017-07-07 2020-04-17 宜昌经纬纺机有限公司 地毯丝加捻机
CN109137164A (zh) * 2018-11-14 2019-01-04 浙江东星纺织机械有限公司 一种气流引纱锭子

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH533180A (de) * 1970-07-15 1973-01-31 Palitex Project Co Gmbh Doppeldrahtzwirnmaschine mit druckluftbetätigter Einfädelvorrichtung
IT1111436B (it) * 1977-03-04 1986-01-13 Skf Cie Applic Mecanique Fuso di torcitura
DE2939702C2 (de) * 1979-09-29 1982-08-12 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel mit einem ortsfest gehaltenen Lieferspulenträger
DE3012427A1 (de) 1980-03-31 1981-04-16 Saurer-Allma Gmbh, 8960 Kempten Doppeldrahtzwirnspindel mit druckluftbetaetigter einfaedelvorrichtung
JPS5943403Y2 (ja) * 1982-12-28 1984-12-22 村田機械株式会社 二重撚糸機におけるテンシヨン装置
DE4103286C2 (de) * 1991-02-04 1993-10-28 Palitex Project Co Gmbh Doppeldraht-Zwirnspindel
DE19610460A1 (de) 1996-03-16 1997-09-18 Schaeffler Waelzlager Kg Spindel zum Herstellen eines Fadens
DE19955399C2 (de) * 1999-11-18 2001-10-04 Volkmann Gmbh Kablier- und Doppeldrahtzwirn-Spindel
DE10250423A1 (de) 2002-10-30 2004-05-19 Volkmann Gmbh Spindellagerung für eine Doppeldraht-Zwirnmaschine
DE102004050180A1 (de) 2004-10-14 2006-04-20 Saurer Gmbh & Co. Kg Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung

Also Published As

Publication number Publication date
CN101473077A (zh) 2009-07-01
US7908839B2 (en) 2011-03-22
CN101473077B (zh) 2010-08-18
DE102006029055A1 (de) 2007-12-27
US20100018178A1 (en) 2010-01-28
EP2035606A1 (de) 2009-03-18
WO2007147468A1 (de) 2007-12-27

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