US20070125062A1 - Air-jet spinning device - Google Patents

Air-jet spinning device Download PDF

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Publication number
US20070125062A1
US20070125062A1 US10/576,364 US57636404A US2007125062A1 US 20070125062 A1 US20070125062 A1 US 20070125062A1 US 57636404 A US57636404 A US 57636404A US 2007125062 A1 US2007125062 A1 US 2007125062A1
Authority
US
United States
Prior art keywords
channel
compressed air
piston
fiber feed
thread withdrawal
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.)
Abandoned
Application number
US10/576,364
Other languages
English (en)
Inventor
Gernot Schaeffler
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
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Assigned to MASCHINENFABRIK RIETER AG reassignment MASCHINENFABRIK RIETER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER, GERNOT
Publication of US20070125062A1 publication Critical patent/US20070125062A1/en
Abandoned legal-status Critical Current

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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
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex

Definitions

  • the present invention relates to an airjet spinning arrangement including a fiber feed channel and a thread withdrawal channel, which is arranged downstream of the fiber feed channel and which is movable away from the fiber feed channel, into which thread withdrawal channel runs an injector channel connectable to a compressed air source.
  • An airjet spinning arrangement of this type is prior art in European published patent application 0 787 843.
  • a staple fiber strand is drafted to a thin fiber strand in a drafting unit arranged upstream of the airjet spinning arrangement, to which fiber strand the spinning twist is then given in the airjet spinning arrangement.
  • the fiber strand is fed through a fiber feed channel of the airjet spinning arrangement into a vortex chamber to which is arranged a fluid device for generating a vortex current around the entry opening of a thread withdrawal channel.
  • the front ends of the fibers held in the fiber strand are hereby first fed into the thread withdrawal channel, while rear free fiber ends spread out, are seized by the vortex current and wound around the front ends already located in the entry opening of the thread withdrawal channel, that is around the front ends already bound in, whereby a thread with a mostly real twist is formed.
  • an injector channel is provided in the component which comprises the thread withdrawal channel in the known airjet spinning arrangement.
  • the injector channel is connected to the thread withdrawal channel by a mouthpiece and is aligned against the drafting unit.
  • this injector channel is connected to a compressed air source, a suction stream directed against the drafting unit is generated in the thread withdrawal channel. With the aid of the suction stream, the already spun thread end is transported back to the drafting unit.
  • the thread withdrawal channel can subsequently be moved back again by the external mechanism to the fiber feed channel into its operational position.
  • the thread withdrawal channel is arranged in a piston-like component, which is movable away from the fiber feed channel by the compressed air fed to the injector channel.
  • the thread withdrawal channel is arranged in a piston-like component, it is no longer necessary to separate any housings from one another—for which an external mechanism would be necessary—in order to move the thread withdrawal channel away from the fiber feed channel. Rather, the piston-cylinder unit according to the present invention can be located completely in the inside of the airjet spinning arrangement.
  • the compressed air for threading the piecing thread in the prior art now receives an additional function, in that it is utilized for moving the thread withdrawal channel away from the fiber feed channel. After the separation of the two components from one another, they can then be cleaned, whereby the compressed air fed through the injector channel may even be used for the cleaning process.
  • the compressed air acts advantageously on a loading spring, which presses the j piston-like component into an operational position when the compressed air is cut off.
  • a loading spring which presses the j piston-like component into an operational position when the compressed air is cut off.
  • the piston-like component is simultaneously designed hereby as a valve, which can be actuated when compressed air is fed in. The valve subsequently establishes an effective connection between a conduit for compressed air and the injector channel.
  • the travel of the spring corresponds to a certain extent to the valve stroke.
  • the piston-like component travels through a ring channel when the thread withdrawal channel is moved away from the fiber feed channel.
  • the ring channel is connected to the conduit for compressed air.
  • FIG. 1 shows in greatly enlarged dimensions an airjet spinning arrangement according to the present invention in axial cross section during operation
  • FIG. 2 shows the same view of the same airjet spinning arrangement in a non-operational state.
  • the airjet spinning arrangement shown in FIG. 1 serves to produce a spun thread 2 from a staple fiber strand 3 .
  • a drafting unit 4 is arranged upstream of the airjet spinning arrangement 1 .
  • the staple fiber strand 3 is fed to the drafting unit 4 in drafting direction A and 1 withdrawn as a spun thread 2 in withdrawal direction 8 and guided to a winding device (not shown).
  • the only partly shown drafting unit 4 is preferably a three-cylinder drafting unit and includes therefore three roller pairs, each of which includes a driven bottom roller and an upper roller designed as a pressure roller. Only the delivery roller pair 5 , 6 is shown.
  • a staple fiber strand 3 is drafted in the known way to the desired degree of fineness.
  • a thin fiber strand 7 is present, which is drafted and still twist-free.
  • the fiber strand 7 is fed via a fiber feed channel 8 to the airjet spinning arrangement 1 . Downstream thereof lies a so-called vortex chamber 9 , in which the fiber strand 7 receives its spinning twist, so that the spun thread 2 is formed, which is withdrawn through a thread withdrawal channel 10 .
  • a fluid device generates a vortex current during the spinning process in the vortex chamber 9 by means of blowing in compressed air through compressed air nozzles 11 , which run tangentially into the vortex chamber 9 .
  • the compressed air exiting out of the nozzle openings is discharged via an evacuation channel 12 , whereby the channel 12 has a ring-shaped cross section around a spindle-shaped component 13 , which is stationary during operation and which includes the thread withdrawal channel 10 .
  • An edge of a fiber guiding surface 14 acting as a twist block, is arranged in the area of the vortex chamber 9 .
  • the fiber guiding surface 14 is slightly eccentrically arranged with respect to the thread withdrawal channel 10 in the area of its entry opening 15 .
  • the fibers to be spun are, on the one hand, held together in a fiber strand 7 , and thus fed from the fiber feed channel 8 into the thread withdrawal channel 10 essentially without a spinning twist, while on the other hand the fibers in the area between the fiber feed channel 8 and the thread withdrawal channel 10 are exposed to the vortex current.
  • the vortex current causes the fibers, 1 or at least their end areas to be driven away radially from the entry opening 15 of the thread withdrawal channel 10 .
  • the threads 2 produced by the above described airjet spinning arrangement 1 display a core comprising fibers or fiber areas extending essentially in thread longitudinal direction without any significant twist, and an outer area in which the fibers or fiber areas are wrapped around the core.
  • An airjet spinning arrangement 1 of this type permits very high spinning speeds, which lie in the range between 300 and 600 m per minute.
  • the compressed air exiting out of the compressed air nozzles 11 into the vortex chamber 9 is fed to the airjet spinning arrangement 1 during operation via a compressed air channel 16 in feed direction C. From the compressed air channel 16 , the compressed air reaches first a ring channel 17 which surrounds the vortex chamber 9 , to which the above mentioned compressed air nozzles 11 are directly connected.
  • the spindle-shaped component 13 comprising the thread withdrawal channel 10 is arranged in such a way that it is movable in an axial direction.
  • the selected distance x 1 can be fixed during the operational state.
  • the spindle-shaped component 13 is designed partly as a piston-like component 18 of a piston-cylinder unit 19 , whose functions are described in detail below.
  • the moving away of the thread withdrawal channel 10 from the fiber feed channel 8 can be carried out using very simple means.
  • a ring channel 20 surrounding the spindle-like component 13 is provided, which ring channel 20 extends through the piston-like component 18 and which is connected to a conduit 21 for compressed air.
  • This compressed air see arrow D in FIG. 2 , and the arrow crossed through in FIG. 1 , is fed only when the spinning process is interrupted.
  • the compressed air entering into the ring channel 20 moves the piston-like component 18 upwards as shown in the view in FIG. 2 , so that the ring channel 20 increases due to the piston stroke to become an enlarged ring chamber 22 .
  • the limiting piston 23 affixed to the spindle-like component 13 thus borders the ring channel 20 during operation and the enlarged ring chamber 22 when the spinning process is interrupted.
  • the limiting piston 23 acts hereby against a loading spring 24 , which presses the piston-like component 18 into a secure operational position when the compressed air is cut off, that is, during the spinning process,
  • the compressed air fed in via the conduit 21 serves to move away the thread withdrawal channel 10 from the fiber feed channel 8 , while the loading spring 24 serves the return movement.
  • the very small distance x 1 during operation can be increased by the moving away of the spindle-like component 13 to a distance x 2 , which then permits the cleaning of the space between fiber feed surface 14 and the entry opening 15 of the thread removal channel 10 .
  • a blast of compressed air for example, can be fed to the fiber feed channel 8 from the outside for this purpose, whereby this cleaning air can be discharged via the evacuation channel 12 which continues to be supplied with low pressure.
  • An injector channel 25 is provided in this case as an auxiliary device, which can be connected to the same pressure source as the ring channel 20 and whose mouthpiece 26 is connected to the thread withdrawal channel 10 and is directed towards its entry opening 15 .
  • a suction current directed against the drafting unit 4 is generated in the thread withdrawal channel 10 , which suction current guides the end of the spun thread 2 to the delivery roller pair 5 , 6 .
  • the compressed air fed via the conduit 21 to the ring channel 20 serves, as can be seen, not only for moving the spindle-like component 13 away from the fiber feed channel 8 , but also serves as an injector air current via the injector channel 25 , which permits threading of the thread end to be pieced.
  • the piston-like component 18 is designed to a certain extent as a valve, which is actuated by the feeding of compressed air and which establishes an effective connection between the conduit 21 and the injector channel 25 .
  • the thread withdrawal channel 10 because of its position in a piston-like component 18 , is movable away from the fiber feed channel 8 by the compressed air fed to the injector channel 25 . Due to the present invention, not only can external mechanisms for separating the thread withdrawal channel 10 from the fiber feed channel 8 be omitted, but the compressed air which effects the threading simultaneously receives a further function.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US10/576,364 2003-10-20 2004-07-30 Air-jet spinning device Abandoned US20070125062A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10349651A DE10349651A1 (de) 2003-10-20 2003-10-20 Luftdüsen-Spinnvorrichtung
DE10349651.3 2003-10-20
PCT/EP2004/008602 WO2005047577A1 (fr) 2003-10-20 2004-07-30 Dispositif de filature a buses d'air

Publications (1)

Publication Number Publication Date
US20070125062A1 true US20070125062A1 (en) 2007-06-07

Family

ID=34442236

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/576,364 Abandoned US20070125062A1 (en) 2003-10-20 2004-07-30 Air-jet spinning device

Country Status (6)

Country Link
US (1) US20070125062A1 (fr)
EP (1) EP1675977A1 (fr)
JP (1) JP2007509243A (fr)
CN (1) CN1871381A (fr)
DE (1) DE10349651A1 (fr)
WO (1) WO2005047577A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070227116A1 (en) * 2006-04-13 2007-10-04 Maschinenfabrik Rieter Ag Spindle-shaped component for an air-jet spinning arrangement with an injection channel
US20080190089A1 (en) * 2004-09-09 2008-08-14 Gerd Stahlecker Airjet Spinning Arrangement
EP2876192A1 (fr) * 2013-11-25 2015-05-27 Murata Machinery, Ltd. Fileuse pneumatique et métier à filer
US20150283747A1 (en) * 2014-04-03 2015-10-08 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and a Method for Operating an Air Spinning Machine
CN105239223A (zh) * 2015-10-22 2016-01-13 陕西华燕航空仪表有限公司 一种喷气涡流纺纱器
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011006270A2 (fr) * 2009-07-16 2011-01-20 Maschinenfabrik Rieter Ag Métier à filer à jet d'air
DE102009034206A1 (de) * 2009-07-17 2011-01-27 Maschinenfabrik Rieter Ag Bauteil für eine Luftdüsenspinnvorrichtung
JP5549551B2 (ja) * 2010-11-10 2014-07-16 村田機械株式会社 空気紡績装置を用いた紡績方法及び空気紡績装置
DE102011053837A1 (de) * 2011-09-21 2013-03-21 Maschinenfabrik Rieter Ag Spinnspitze für eine Hohlspindel einer Luftspinnmaschine
DE102012100674A1 (de) * 2012-01-27 2013-08-01 Maschinenfabrik Rieter Ag Luftspinnmaschine mit einem Reinigungsorgan sowie Verfahren zum Reinigen der Wirbelkammer einer Luftspinnmaschine
CN112481753A (zh) * 2021-01-07 2021-03-12 厦门代虬纺织有限公司 一种喷气式纺纱设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673547A (en) * 1994-09-05 1997-10-07 Murata Kikai Kabushiki Kaisha Method of and apparatus for spinning and piecing yarn
US5809764A (en) * 1996-01-30 1998-09-22 Murata Kikai Kabushiki Kaisha Piecing method for a spinning machine
US20070227116A1 (en) * 2006-04-13 2007-10-04 Maschinenfabrik Rieter Ag Spindle-shaped component for an air-jet spinning arrangement with an injection channel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1560304B1 (de) * 1966-09-03 1971-02-25 Schubert & Salzer Maschinen Vorrichtung zum klemmenden Festhalten eines Fadens in einer Offen-End-Spinnvorrichtung
FR2127629A5 (fr) * 1971-03-30 1972-10-13 Schubert & Salzer Maschinen
DE3330523C1 (de) * 1983-08-24 1984-09-06 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel
JP2616428B2 (ja) * 1994-01-25 1997-06-04 村田機械株式会社 紡績機の糸継ぎ方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673547A (en) * 1994-09-05 1997-10-07 Murata Kikai Kabushiki Kaisha Method of and apparatus for spinning and piecing yarn
US5809764A (en) * 1996-01-30 1998-09-22 Murata Kikai Kabushiki Kaisha Piecing method for a spinning machine
US20070227116A1 (en) * 2006-04-13 2007-10-04 Maschinenfabrik Rieter Ag Spindle-shaped component for an air-jet spinning arrangement with an injection channel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080190089A1 (en) * 2004-09-09 2008-08-14 Gerd Stahlecker Airjet Spinning Arrangement
US20070227116A1 (en) * 2006-04-13 2007-10-04 Maschinenfabrik Rieter Ag Spindle-shaped component for an air-jet spinning arrangement with an injection channel
EP2876192A1 (fr) * 2013-11-25 2015-05-27 Murata Machinery, Ltd. Fileuse pneumatique et métier à filer
US20150283747A1 (en) * 2014-04-03 2015-10-08 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and a Method for Operating an Air Spinning Machine
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine
US9719192B2 (en) * 2014-07-30 2017-08-01 Maschinenfabrik Rieter Ag Spinning unit of an air jet spinning machine and the operation of such a machine
CN105239223A (zh) * 2015-10-22 2016-01-13 陕西华燕航空仪表有限公司 一种喷气涡流纺纱器

Also Published As

Publication number Publication date
CN1871381A (zh) 2006-11-29
EP1675977A1 (fr) 2006-07-05
WO2005047577A1 (fr) 2005-05-26
JP2007509243A (ja) 2007-04-12
DE10349651A1 (de) 2005-05-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MASCHINENFABRIK RIETER AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHAEFFLER, GERNOT;REEL/FRAME:017814/0698

Effective date: 20060407

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION