EP2035606A1 - Two-for-one twisting spindle having a pneumatically actuated threading device - Google Patents
Two-for-one twisting spindle having a pneumatically actuated threading deviceInfo
- Publication number
- EP2035606A1 EP2035606A1 EP07725354A EP07725354A EP2035606A1 EP 2035606 A1 EP2035606 A1 EP 2035606A1 EP 07725354 A EP07725354 A EP 07725354A EP 07725354 A EP07725354 A EP 07725354A EP 2035606 A1 EP2035606 A1 EP 2035606A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- double
- connecting element
- compressed air
- twisting spindle
- injector
- 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
Links
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
- Double-twisting spindle with pneumatically operated threading device Double-twisting spindle with pneumatically operated threading device
- 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- the thread is usually withdrawn from the stationary supply spool upwards, introduced into the upper end of a thread inlet tube, deflected downward and guided by a thread brake in the spindle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.
- DE 3012427 C2 discloses a double-twisting spindle with compressed air-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 document DE 10250423 A1 shows a double-twisting spindle with a compressed-air-operated threading device, in which the compressed-air channel in the lower part of the spindle shaft is initially guided centrically and before reaching the thread 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 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 about 90 ° or more causes the compressed air emerging from the compressed air channel initially meets perpendicular to the wall of the injector before the compressed air flow is deflected and accelerated in the injector.
- 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 helps to reduce the air pressure of the supplied compressed air without reducing the efficiency of the threading operation.
- 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 shows a partial view of a double-twisting spindle with compressed air-operated threading device in axial section
- Figure 2 is a perspective view of a disassembled
- Figure 3 is a perspective view of one half of a split connecting element.
- FIG. 1 shows a double-twisting spindle with a spindle bearing 1.
- 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.
- 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 16 connects the upper hollow shaft 14 of the spindle shaft 2 with the Fadenleitkanal 18 of the
- 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 stationarily arranged compressed air supply to the spindle shaft 2 is described in detail in DE 3012427 C2, for example.
- 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 element 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 results in a step 40, as shown in Figure 1.
- 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 shown in FIG. 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 interior of the air duct 26 and the recesses 38, 39 into which the sealing rings 30, 31 are inserted are clearly visible in the illustration of FIG.
- 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.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006029055A DE102006029055A1 (en) | 2006-06-24 | 2006-06-24 | Double-twisting spindle with pneumatically operated threading device |
PCT/EP2007/004446 WO2007147468A1 (en) | 2006-06-24 | 2007-05-18 | Two-for-one twisting spindle having a pneumatically actuated threading device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2035606A1 true EP2035606A1 (en) | 2009-03-18 |
EP2035606B1 EP2035606B1 (en) | 2016-08-24 |
Family
ID=38330779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725354.0A Active EP2035606B1 (en) | 2006-06-24 | 2007-05-18 | Two-for-one twisting spindle having a pneumatically actuated threading device |
Country Status (5)
Country | Link |
---|---|
US (1) | US7908839B2 (en) |
EP (1) | EP2035606B1 (en) |
CN (1) | CN101473077B (en) |
DE (1) | DE102006029055A1 (en) |
WO (1) | WO2007147468A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010013795A1 (en) | 2010-04-03 | 2011-10-06 | Oerlikon Textile Gmbh & Co. Kg | Two-for-one twisting spindle |
EP2691698B1 (en) | 2011-03-30 | 2020-05-06 | Signify Holding B.V. | End cap for a tubular light source |
RU2608560C2 (en) | 2011-03-30 | 2017-01-23 | Филипс Лайтинг Холдинг Б.В. | End cap for tubular light source |
EP2948713B1 (en) | 2013-01-24 | 2017-09-13 | Philips Lighting Holding B.V. | End cap for a tubular light source |
CN103541069A (en) * | 2013-09-26 | 2014-01-29 | 吴江伊莱纺织科技有限公司 | Pneumatic threading spindle |
DE102014018038A1 (en) * | 2014-12-05 | 2016-06-09 | Saurer Germany Gmbh & Co. Kg | Multiple wire twisting spindle for twisting machines |
CN105671708B (en) * | 2016-04-18 | 2018-08-03 | 安徽日发纺织机械有限公司 | A kind of pneumatic spindle of electricity ingot |
CN106087144B (en) | 2016-07-29 | 2018-07-24 | 浙江天竺纺机有限公司 | A kind of twister of yarn |
CN106367856B (en) * | 2016-11-17 | 2019-01-22 | 安徽日发纺织机械有限公司 | A kind of large package pneumatic entry two-for-one twisting spindles |
CN107299422B (en) * | 2017-07-07 | 2020-04-17 | 宜昌经纬纺机有限公司 | Carpet yarn twisting machine |
CN109137164A (en) * | 2018-11-14 | 2019-01-04 | 浙江东星纺织机械有限公司 | A kind of air-flow draws spindle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH533180A (en) * | 1970-07-15 | 1973-01-31 | Palitex Project Co Gmbh | Two-for-one twisting machine with compressed air operated threading device |
US4158282A (en) * | 1977-03-04 | 1979-06-19 | Skf Compagnie D'applications Mecaniques | Twister mechanism with elastic part |
DE2939702C2 (en) * | 1979-09-29 | 1982-08-12 | Palitex Project-Company Gmbh, 4150 Krefeld | Two-for-one twisting spindle with a stationary delivery spool carrier |
DE3012427A1 (en) | 1980-03-31 | 1981-04-16 | Saurer-Allma Gmbh, 8960 Kempten | Pneumatic threading device for two-for-one spindle - with fixed feed jet forming non-sealed union with spindle |
JPS5943403Y2 (en) * | 1982-12-28 | 1984-12-22 | 村田機械株式会社 | Tension device in double twisting machine |
DE4103286C2 (en) * | 1991-02-04 | 1993-10-28 | Palitex Project Co Gmbh | Double wire twist spindle |
DE19610460A1 (en) | 1996-03-16 | 1997-09-18 | Schaeffler Waelzlager Kg | Spindle for making a thread |
DE19955399C2 (en) * | 1999-11-18 | 2001-10-04 | Volkmann Gmbh | Cable and double wire twist spindle |
DE10250423A1 (en) | 2002-10-30 | 2004-05-19 | Volkmann Gmbh | Spindle bearing for a double wire twisting machine |
DE102004050180A1 (en) * | 2004-10-14 | 2006-04-20 | Saurer Gmbh & Co. Kg | Double-twisting spindle with pneumatically operated threading device |
-
2006
- 2006-06-24 DE DE102006029055A patent/DE102006029055A1/en not_active Withdrawn
-
2007
- 2007-05-18 EP EP07725354.0A patent/EP2035606B1/en active Active
- 2007-05-18 WO PCT/EP2007/004446 patent/WO2007147468A1/en active Application Filing
- 2007-05-18 US US12/308,826 patent/US7908839B2/en not_active Expired - Fee Related
- 2007-05-18 CN CN2007800226862A patent/CN101473077B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007147468A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006029055A1 (en) | 2007-12-27 |
US20100018178A1 (en) | 2010-01-28 |
US7908839B2 (en) | 2011-03-22 |
WO2007147468A1 (en) | 2007-12-27 |
CN101473077A (en) | 2009-07-01 |
EP2035606B1 (en) | 2016-08-24 |
CN101473077B (en) | 2010-08-18 |
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