EP1564318A2 - Method of sliver feeding in production of fancy yarn and spinning unit for performing it - Google Patents
Method of sliver feeding in production of fancy yarn and spinning unit for performing it Download PDFInfo
- Publication number
- EP1564318A2 EP1564318A2 EP04466020A EP04466020A EP1564318A2 EP 1564318 A2 EP1564318 A2 EP 1564318A2 EP 04466020 A EP04466020 A EP 04466020A EP 04466020 A EP04466020 A EP 04466020A EP 1564318 A2 EP1564318 A2 EP 1564318A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliver
- feeding
- speed
- yarn
- fact
- 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.)
- Withdrawn
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Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
-
- 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
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
Definitions
- the invention concerns the method of sliver feeding in production of fancy yarn on spindle-less rotor machines with sliver feeding by a feed roller to the stripping roller, stripping individual fibres from the sliver that are consequently used at the spinning rotor for yarn spinning plus spinning units for this method performance.
- the sliver feeding from staple fibres is performed using a feed roller, to which the sliver is pressed using so called table.
- the side of the table adjacent to the feed roller is covered with an extremely smooth surface with low friction in relation to the fibre material, while - on the other hand - the feed roller is covered with high-friction surface caused by corrugation or other type of roughing - that means that while turning, it takes along the fibre material which is supplied in a constant speed to the stripping roller and in the location of a contact with the stripping roller, the yarns from the sliver are combed out in so called combing zone and then they are transported - usually by air via transport channel - to the spinning unit, where yarn is spun from the fibres.
- the feed roller is usually turned by a central drive via a clutch that is disconnected in case of any break. The clutch connects at the time of spinning on.
- fancy yarn is requested for production of fashionable goods.
- fancy yarns There are several types of fancy yarns. One of them is characterised by the fact that there are sudden increases or reductions of the yarn diameter in regular or irregular intervals - it is a kind of an artificial fault, in other words these are local changes of the length weight of the yarn. Then, such yarn creates characteristic patters in the fabric or knitted fabric, depending on structure and "fault" character.
- the task of the invention is to significantly reduce the effects of such filtration in case of sliver feeding at spindle-less spinners and to allow high-quality spinning of fancy yarns even on spindle-less rotor machines, corresponding with quality of fancy yarns produced on annular machines.
- the task is - to a significant level - solved by using the method of fancy yarn production on spindle-less spinners with feeding of a sliver of staple fibre material or staple or a mixture of the materials, by the feed roller to the stripping roller, where individual fibres are combed out of the sliver and consequently spun in the spinning rotor into the yarn, in compliance with this invention, the base of which includes mainly the fact that in case of any change of the yarn spinning profile, there occurs a short term sudden increase - in the time interval of 0,01 - 0,9 second - of the sliver supply in at least 10% above the operation speed, while the sliver section fed in higher speed is separated from sections spun under operation speed in at least one place - at the beginning or in the end - by reversing the sliver feed in the time interval of 0,01 - 0,9 second by a speed that exceeds the operation speed of feeding.
- the limit value is the area of return, characterised as 90% of the average staple length - sliver returning should not exceed the above stated size.
- the sliver movement reversing to be completed with short-time interruptions of sliver feeding in the time interval of 0,01 - 0,9 second.
- Fancy yarn may be advantageously produced on spinning unit of a spindle-less spinner, base don the fact that the control unit of the feed roller is connected with the yarn break sensor and programmable control unit.
- FIG. 1 a simplified scheme of the spinning unit
- Fig. 2 showing the course of sliver feed speed when creating the fancy yarn with sliver movement reversing
- Fig. 3 shows the course of sliver feeding when the high-speed fed section is separated at the beginning of its creation from sections fed in operation speed by feed reversing and - in the end - by a delay in feeding
- Fig. 4 shows the course of sliver feeding when creating the strengthening in steps.
- a schematically drawn spinning unit 1 of the spindle-less spinner which - as it can be seen in Fig. 1 - includes the feed roller 3 driven directly by step electric engine 5 or via electro-magnetic clutch 6 .
- the feed roller 3 is continued by a stripping roller 4 driven by a belt 14 , inter-connected with channel 7 with the spinning rotor 8 .
- the spinning rotor 8 is driven by a belt 18 .
- the output from the spinning rotor 8 is performed by a tube 9 , followed by the break sensor 10 .
- the break sensor 10 is connected with the control unit 11 of the drive of the feed roller 3 , controlling the operation of the step electric engine 5 in case of individual drive or the electro-magnetic clutch 6 in case of central drive.
- the control unit 11 is also connected with a programmable control unit 12 , which is also connected with other not-shown controlled units of the spinning unit 1 .
- the drive is equipped with a suitable reversing box or every spinning unit 1 is equipped with a reversing and speed box, which is well known and it is not shown as well as the other parts that are not necessary for the invention explanation - like e.g. the drawing-off, wind-up and spinning units.
- the spinning unit 1 - when continually producing the yarn 13 - feeds the sliver 2 by a constant speed and after its unification the air arranges transport to the spinning location rotor, where spinning into yarn 13 is performed.
- the production of fancy yarn 13 characterised by changes in profile of the yarn 13 regularly or irregularly distributed along its length, will be explained by using schemes with time data marked on the horizontal axis and feed roller 3 revolution speed data marked on the vertical axis, the total time of the effect is marked Lef , permanent operation speed Vp , increased speed Vmax , reversing speed Vr , Vr ', Vr ", Vr ''', reversing time Lr1 at the beginning of accelerated feed and reversing time in the end of the sliver 2 feed supply in an accelerated speed.
- the sliver 2 is fed by operation speed Vp , i.e. under permanent - i.e. standard case.
- operation speed Vp i.e. under permanent - i.e. standard case.
- the reversing time Lr1 is set within the range of 0,01 - 0,9 second, depending on reversing speed Vr , which should be as high as possible and it is advantageously selected at least twice higher in comparison with the operation speed Vp .
- the materials that can be reversed to a bigger extent are an exception, while - from the point of view of resulting effect - any more extensive reversal of the sliver 2 does not bring any other positive effects.
- Effect termination for limitation of final combing and other transition features - if it is to be apparent - is performed by reversing the sliver 2 feeding for the period of Lr2 .
- This sliver 2 reversal is appropriately affected by all and any facts stated in the course of reversing description at the beginning of the effect creation.
- the length of the effect Lef - i.e. the length where the change of the yarn 13 profile is directly performed - follows the term of duration of the sliver 2 feeding in an accelerated speed Vmax and the yarn 13 strengthening that occurs follows the extent of accelerated speed Vmax . It is apparent that the accelerated speed Vmax is different for individual spinning types, depending on character of fibres 22 used. Also the strengthening can not be selected at will.
- the strengthening is set mainly by mechanic features of fibres 22 and by their ability to withstand the increased load when pulling the strengthened section of the yarn 13 from the spinning rotor 8 .
- Exact setting of accelerated speed Vmax within the above stated range must be tested, so as the spinning process is not interrupted by breaks and so as the yarn 13 obtained is of high quality.
- the appearance of the final effect may be significantly affected by control of the individual stages of feeding and by reversing the sliver 2 .
- the scheme 2 shows the course of sliver 2 feeding for reaching a gradual setting of the effect.
- the scheme shows an example of the effect course with two differently following strong profiles of the yarn 13 , when the sliver 2 is fed by various and mutually accelerated speeds Vmax ' and Vmax " and reversing is also performed by different speeds Vr ', Vr " and Vr ''', while one reversing Vr " is included between the accelerated speed Vmax ' and Vmax ".
- the invention is designed for spinning on spindle-less rotor spinners.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims (8)
- Method of sliver feeding from staple fibre material in production of fancy yarn on spindle-less rotor machines with sliver feeding using the feed roller to the stripping roller, which combs out the individual fibres from the sliver and then the spinning rotor spins them into yarn, characterised by the fact that in case of each and any change of the yarn spinning profile there is - on a short term basis in the time interval of 0,01 - 0,9 second - suddenly increased in at least 10% above the operation speed of sliver feeding, while the section of the sliver fed in accelerated speed is separated from sections spun by operation speed in at least one location - at the beginning or in the end by reversing the sliver feeding on the basis of speed exceeding the operation speed of feeding.
- Method according to point 1, characterised by the fact that in individual sections of sliver feeding in an accelerated speed, the speed of sliver feeding falls within the range of 110% up to 400% of the operation speed of sliver feeding.
- Method according to point 1, characterised by the fact that the speed during the sliver feed reversing falls within the range of 110% - 400% of the operation speed of sliver feeding.
- Method according to point 1 or 2, characterised by the fact that in the course of reversing the sliver reverses in the length corresponding with maximally 90% of the average length of staple fibres.
- Method according to point 1, characterised by the fact that the sliver movement reversing is completed with a short-term interruption of the sliver feeding in the time interval of 0,01 - 0,9 second.
- Method according to point 1 up to 5, characterised by the fact that the section of accelerated sliver feeding is performed repeatedly, while the sections are separated from each other by interruption of feeding in the interval of 0,01 - 0,9 second.
- Method according to any of the points 1 up to 3, characterised by the fact that the sliver sections fed in operation speed and the sliver sections fed in accelerated speed are selected in variable lengths.
- The spinning unit of the spindle-less spinner for performing the method, including an independently driven feed roller and characterised by the fact that its driving unit (11) of the feed roller (3) drive is connected with the sensor (10) of the yarn (13) break and a programmable control unit (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ20040240 | 2004-02-16 | ||
CZ20040240A CZ300469B6 (en) | 2004-02-16 | 2004-02-16 | Method for feeding sliver when producing fancy yarn and spinning unit for making the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1564318A2 true EP1564318A2 (en) | 2005-08-17 |
EP1564318A3 EP1564318A3 (en) | 2006-05-17 |
Family
ID=34683187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04466020A Withdrawn EP1564318A3 (en) | 2004-02-16 | 2004-07-29 | Method of sliver feeding in production of fancy yarn and spinning unit for performing it |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1564318A3 (en) |
CN (1) | CN1657669B (en) |
CZ (1) | CZ300469B6 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3327185A4 (en) * | 2015-08-21 | 2018-08-01 | Jiangnan University | Rotor spinning method and apparatus using three-cotton-sliver asynchronous input and multi-stage carding |
EP3327186A4 (en) * | 2015-08-21 | 2018-08-22 | Jiangnan University | Rotor spinning method and apparatus using two-cotton-sliver asynchronous input and three-stage carding |
EP3327183A4 (en) * | 2015-08-21 | 2018-09-05 | Jiangnan University | Rotor spinning method and device for five-sliver asynchronous inputting and three-level carding |
EP3327184A4 (en) * | 2015-08-21 | 2018-09-05 | Jiangnan University | Rotor spinning method and device for four-sliver asynchronous inputting and three-level carding |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3919659B1 (en) * | 2020-06-03 | 2023-02-15 | Saurer Spinning Solutions GmbH & Co. KG | Open end rotor spinning device and method for operating an open end rotor spinning device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0385530A1 (en) * | 1989-03-02 | 1990-09-05 | SAVIO MACCHINE TESSILI S.r.l. | Improved open-end spinning machine |
DE4404503A1 (en) * | 1993-03-26 | 1994-09-29 | Schlafhorst & Co W | Rotor-spinning machine |
EP1352998A2 (en) * | 2002-04-09 | 2003-10-15 | Rieter Ingolstadt Spinnereimaschinenbau AG | Feed cylinder and opening device for a Spinning machine |
WO2005035843A2 (en) * | 2003-10-16 | 2005-04-21 | Saurer Gmbh & Co. Kg | Rotor spinning machine |
WO2005071150A1 (en) * | 2004-01-21 | 2005-08-04 | Saurer Gmbh & Co. Kg | Method for the production of a fancy yarn |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2138487C3 (en) * | 1971-07-31 | 1979-11-08 | Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt | Device for producing fancy yarn by means of an open-end spinning device |
JPS6485324A (en) * | 1987-09-21 | 1989-03-30 | Masahiro Suda | Spinning of slub yarn by open end spinning |
US5509261A (en) * | 1993-03-26 | 1996-04-23 | W. Schlafhorst Ag & Co. | Stepping motor arrangement for driving a silver feed roller in a rotor spinning machine |
CZ284295B6 (en) * | 1997-02-13 | 1998-10-14 | Rieter Elitex A.S. | Process of yarn individual spinning on a rotor spinning machine spinning station and apparatus for making the same |
CN1263175A (en) * | 1999-02-12 | 2000-08-16 | 日清纺织株式会社 | Production method of composite yarn and its composite yarn |
DE10026389A1 (en) * | 1999-09-20 | 2001-03-22 | Schlafhorst & Co W | Monitoring of properties on running yarn, e.g. at open-end spinning, includes identification of faults from shape of parameter trace |
CZ289933B6 (en) * | 2000-07-26 | 2002-04-17 | Rieter Cz A. S. | Rotor-type spinning machine |
EP1338687B1 (en) * | 2002-02-14 | 2006-12-20 | Rieter CZ a.s. | Method and device for production of a multi-component fancy yarn |
-
2004
- 2004-02-16 CZ CZ20040240A patent/CZ300469B6/en not_active IP Right Cessation
- 2004-07-29 EP EP04466020A patent/EP1564318A3/en not_active Withdrawn
- 2004-09-10 CN CN2004100771462A patent/CN1657669B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0385530A1 (en) * | 1989-03-02 | 1990-09-05 | SAVIO MACCHINE TESSILI S.r.l. | Improved open-end spinning machine |
DE4404503A1 (en) * | 1993-03-26 | 1994-09-29 | Schlafhorst & Co W | Rotor-spinning machine |
EP1352998A2 (en) * | 2002-04-09 | 2003-10-15 | Rieter Ingolstadt Spinnereimaschinenbau AG | Feed cylinder and opening device for a Spinning machine |
WO2005035843A2 (en) * | 2003-10-16 | 2005-04-21 | Saurer Gmbh & Co. Kg | Rotor spinning machine |
WO2005071150A1 (en) * | 2004-01-21 | 2005-08-04 | Saurer Gmbh & Co. Kg | Method for the production of a fancy yarn |
Non-Patent Citations (1)
Title |
---|
PER OLA OLSSON: "Möglichkeiten der Effektgarnerzeugung mit OE-Spinnmaschinen" MELLIAND TEXTILBERICHTE, vol. 65, no. 3, 1984, pages 167-172, XP002372120 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3327185A4 (en) * | 2015-08-21 | 2018-08-01 | Jiangnan University | Rotor spinning method and apparatus using three-cotton-sliver asynchronous input and multi-stage carding |
EP3327186A4 (en) * | 2015-08-21 | 2018-08-22 | Jiangnan University | Rotor spinning method and apparatus using two-cotton-sliver asynchronous input and three-stage carding |
EP3327183A4 (en) * | 2015-08-21 | 2018-09-05 | Jiangnan University | Rotor spinning method and device for five-sliver asynchronous inputting and three-level carding |
EP3327184A4 (en) * | 2015-08-21 | 2018-09-05 | Jiangnan University | Rotor spinning method and device for four-sliver asynchronous inputting and three-level carding |
Also Published As
Publication number | Publication date |
---|---|
CN1657669A (en) | 2005-08-24 |
CZ300469B6 (en) | 2009-05-27 |
CN1657669B (en) | 2010-04-21 |
CZ2004240A3 (en) | 2005-10-12 |
EP1564318A3 (en) | 2006-05-17 |
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