EP2452002B1 - Device and method for making a core yarn - Google Patents

Device and method for making a core yarn Download PDF

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Publication number
EP2452002B1
EP2452002B1 EP09780379.5A EP09780379A EP2452002B1 EP 2452002 B1 EP2452002 B1 EP 2452002B1 EP 09780379 A EP09780379 A EP 09780379A EP 2452002 B1 EP2452002 B1 EP 2452002B1
Authority
EP
European Patent Office
Prior art keywords
unrolling
cylinders
pair
bobbin
core filament
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.)
Active
Application number
EP09780379.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2452002A1 (en
Inventor
Killian Grunder
Markus Hilber
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.)
Amsler Tex AG
Original Assignee
Amsler Tex AG
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Filing date
Publication date
Application filed by Amsler Tex AG filed Critical Amsler Tex AG
Publication of EP2452002A1 publication Critical patent/EP2452002A1/en
Application granted granted Critical
Publication of EP2452002B1 publication Critical patent/EP2452002B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame

Definitions

  • the present invention relates to a device and a method for making a core yarn according to the preamble of the patent claims.
  • US2024156 and US2210884 were assigned to the United States Rubber Company and were published on 17 th December 1935 and 13 th August 1940. Both publications are directed to methods for making an elastic yarn. The method describes how a core filament is introduced into a ring spinning process before the delivery rollers of a drawing unit and a cover of textile fibers is spun about the core filament.
  • a bobbin of a core filament is arranged on two parallel unrolling cylinders.
  • the core filament is unrolled from the bobbin around one of the unrolling cylinders and then bypasses a deflection pulley before it is introduced into a ring spinning process by the delivery rolls of a drafting unit.
  • DE19501163 was filed in the name of Zinser Textilmaschinen GmbH and published on 18 th April 1996.
  • DE'163 describes a drawing unit with a guiding unit for feeding a core filament.
  • the drawing unit has a sliver guide with a reciprocating side movement before the entry of the sliver into the final pair of drawing rollers.
  • the sliver guide is combined with a guide for a core yarn, into a one-piece guide unit.
  • the combined guide is moved sideways by a reciprocating drive.
  • the system comprises two unrolling cylinders which are arranged above the spindles in the length direction of the spinning machine.
  • the two unrolling cylinders are arranged on the same level behind each other and are suitable to carry bobbins with a core filament.
  • the core filament is unwound from the bobbins around one of the unrolling cylinders and is then deflected by a sensor pulley, which electronically monitors contactless the presence of the core filament. If no core filament is present, the spinning process for the affected spindle is halted.
  • a sensor pulley is present which is arranged at an arm that can be pivoted upward.
  • the core filament is deflected by the sensor pulley, which is arranged above a pair of delivery rolls of a drawing unit. After the core filament has passed the sensor pulley, it is introduced into the spinning process by the respective pair of delivery rolls.
  • EP2006422 was filed in the name Central Textiles (HK) Limited on 21 August 2007 and discloses an apparatus for making a core yarn which comprises a bi-component polyester filament and an elastomeric fiber.
  • the patent application shows in a very principle manner different embodiments of a core spinning apparatus where the sources for filaments or fibers are mounted on a pair of driven unrolling cylinders.
  • a source of a bi-component filament and a source of an elastomeric fiber are each one arranged on a pair of unrolling cylinders.
  • WO08068294 was filed on 5th December 2007 on behalf of Amsler Tex AG and discloses a device and a method for supplying flames to ring spinning machines.
  • one bobbin provides the core filaments.
  • Two bobbins are arranged behind each other each supported by lateral spacers and held by a bearing shaft. Each bobbin is driven by a single unrolling cylinder.
  • a further problem inherent to the known devices is that they are not suitable for handling bobbins having a larger size.
  • One object of the herein disclosed invention is to provide an improved device for the making of core yarns.
  • a further object of the invention is to provide a device, which is capable in handling larger bobbins and non-elastic core filaments.
  • Still a further object of the invention is to provide a system which is more user friendly.
  • the problem may occur that the size of the filament bobbin and other parameters have a negative impact on the resulting yarn quality, because an angular dependent oscillating tension in the core filament occurs during unrolling.
  • the filament travels along the bobbin during unrolling a significant distance although the deflection roller receiving the filament remains stationary.
  • the "free length" of the filament between the unrolling cylinder/ bobbin and the subsequent deflection roller changes in an oscillating manner.
  • the deflection roller may have a negative impact on the spinning process. This effect is less severe or does not have a negative impact in the case that bobbins with a smaller diameter and/or length are used or the core filament has a certain elasticity.
  • the present invention overcomes this problem by a special arrangement of deflection rollers in addition to and separated from the unrolling cylinders, which carry the bobbin with the core filament.
  • the bobbins for the core filament are arranged in a single row lateral to each other. Their maximum length is thereby limited by the distance between the spindles of the respective ring spinning device and spacers arranged in between. Due to that, their capacity is limited, which results in a more often exchange.
  • Other attempts have been undertaken to arrange the reservoir of the core filament high above the spinning frame. However problems with the blower and during handling are quite likely. In addition, it is often necessary to stop the spinning process because otherwise it would not be possible to handle the heavy bobbins.
  • the storage system for the bobbins with the core filament.
  • the storage system according to said embodiment of the invention comprises two pairs of unrolling cylinders, which are arranged behind each other offering several advantages with respect to the size of the bobbins and their handling.
  • two bobbins are arranged behind each other, it becomes possible to make each bobbin larger and thereby more ample, which results in an improved durability and therefore less maintenance is needed.
  • this storage system is combined by a special arrangement of deflection rollers, it is possible - beside elastic filaments - to process hard (non-elastic) filaments in a very effective manner.
  • a first and a second deflection roller are arranged spaced a distance apart from one another, deflecting the core filament twice before it is introduced into the spinning process thereby effectively influencing/reducing the occurring oscillation of the tension in the filament, which results from the oscillating lateral travelling of the filament during unrolling.
  • a first deflection roller is arranged in a region in above (or in front) of an upper delivery roller of a drawing unit and the second deflection roller is arranged in horizontal direction behind and above the first deflection roller directly or indirectly receiving the filament unrolled from the bobbins. Good results are achievable if the first and the second deflection roller are arranged during operation at a constant distance from each other.
  • the deflection rollers may be arranged stiff or deflectable against the force of a spring or a counter weight. If appropriate, at least one deflection roller may be replaced by another deflection means.
  • the invention may foresee an improved supporting structure and arrangement for bobbins having a significantly larger diameter compared to the prior art.
  • the supporting structure can be designed for smaller bobbins, if required.
  • spacers for several types of bobbins may be foreseen.
  • the spaces may be arranged pivotable about an axis such that they can be easily removed when not required.
  • the core ring yarn spinning machine comprises a first and a second pair of driven unrolling cylinders.
  • the first and the second pair of unrolling cylinders are arranged in horizontal direction behind and spaced a distance apart from each other each pair suitable to receive a bobbin of core filament.
  • a first deflection roller separated from the unrolling cylinders deflects the core filament unrolled from the bobbin before it is entered into the spinning process of a spindle via a delivery roller of a drawing unit.
  • a second deflection roller is arranged between the first deflection roller and the unrolling cylinders deflecting the filament a second time thereby reducing the influence of negative oscillations within the tension of the core filament.
  • the first deflection roller is arranged above the delivery roller of the drawing unit.
  • the second delivery roller may be arranged above an entry roller of the drawing unit.
  • one of the deflection rollers may be arranged displaceable.
  • One of the deflection rollers may be interconnected with means to determine the presence of the core filament, e.g. an electronic sensor.
  • at least one of the deflection rollers may be interconnected with means to stop the spinning process of a dedicated spindle, e.g. in that the supply of a roving is stopped.
  • the first and the second pair of unrolling cylinders are arranged vertically on the same level with respect to each other. However, other arrangements are possible as long as the functionality is not affected.
  • the first and the second pair of unrolling cylinders are driven in the same direction with respect to each other such that a bobbin of core filament can be rolled over from the first to the second pair of unrolling cylinders without halting the spinning process.
  • Figure 1 shows a first embodiment of a device 1 according to the present invention in a perspective view.
  • Figure 2 shows details of the embodiment according to Figure 1 in a magnified manner.
  • Figure 3 shows the device according to Figure 1 in a side view.
  • Figure 4 shows the embodiment according to Figure 2 in a front view.
  • the device 1 comprises two pairs of unrolling cylinders 2.1, 2.2, which serve to carry the core filament bobbins (bobbins) 3.1, 3.2 and to unroll a core filament (filament) 10 from the bobbins 3.1, 3.2.
  • the herein shown device is suitable to handle and process larger bobbins 3, which have a length e.g. in the range of approximately 90 mm to 150 mm and a diameter of approximately 100 mm to 300 mm. Other dimensions are possible depending on the field of application.
  • Spacers 4 are arranged between the bobbins 3 avoiding that the bobbins interact during operation.
  • the unrolling cylinders 2.1, 2.2 are in a vertical direction (z-axis) arranged between the drawing units 5 mounted on a ring spinning frame 6 and the flyer spools 7, which are hanging on a creel 8.
  • the unrolling cylinders 2.1, 2.2 are in horizontal direction (y-axis) arranged behind each other on the same level and supported by a supporting rack 15, which is interconnected to the spinning frame 6.
  • a difference in vertical position is acceptable as long as the functionality does not suffer.
  • the pair of unrolling cylinders 2.1 in the front (right hand side) and the pair of unrolling cylinders 2.2 in the rear of the machinery (left hand side) are both driven clockwise with respect to the view of Figure 3 such that the respective bobbins 3.1, 3.2 are rotating counter clockwise around their length axis (x-axis). While the filament 10 of the front bobbins 3.1 is unwound directly from the bobbin without contact to the associated unrolling cylinder 2.1, the filament 10 of the rear bobbin is unwound around one of the second unrolling cylinders 2.2.
  • One advantage is that the front bobbin 3.1 can easily be rolled over to the rear position without the need to stop and start spinning of the respective spindle. This becomes important when the rear bobbin 3.2 is empty and must be replaced. In the devices known from the prior art, it is very difficult to exchange an empty bobbin without stopping additional spindles. If necessary, additional means to guide the filament can be foreseen.
  • the spacers 4 of the shown embodiment are fastened to two supporting rods 9 arranged between the front and the rear unrolling cylinders 2.1, 2.2.
  • the supporting rods of the shown embodiment are arranged such that they do not hinder the rolling over of the bobbin 3.1 from the front to the rear position, e.g. by disturbing the unrolling filament during the spinning process.
  • other arrangements are possible as long as the functionality is not constrained. If the rolling over is not necessary, it is also possible to unroll the front and the rear bobbin 3.1, 3.2 over the respective unrolling cylinder 2.1, 2.2.
  • the driving directions of the unrolling cylinders are adopted respectively.
  • Figure 4 shows the embodiment according to Figure 2 in a front view.
  • the bobbins 3.1, 2.1 are arranged behind each other on the allocated unrolling cylinders 2.1, 2.2. Because of the viewing direction, only the front bobbin 3.1 and the front pair of unrolling cylinders 2.1 are visible.
  • the lateral travelling of the filaments 10 during unrolling is indicated by arrows 16.
  • the maximum deflection normally occurs at the upper end.
  • the drawing unit which may have a sliver guide with a reciprocating side movement. If not present, the side movement is at the lower end zero.
  • the first deflection rollers 13 are attached to an arm 17, which is arranged above the drawing unit 5 and which is fixed pivotable in upward direction to a fixation beam 19 via a base element 18.
  • the second deflection rollers 14 are in the herein shown embodiment fastened to a holder 20, which is also attached to the fixation beam 19.
  • the first and the second deflection rollers 13, 14 are in the spinning process arranged immovable with respect to each other. Depending on the field of application, e.g. to process less critical filaments, it is possible to avoid the second deflection rollers 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Unwinding Of Filamentary Materials (AREA)
EP09780379.5A 2009-07-09 2009-07-09 Device and method for making a core yarn Active EP2452002B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/058753 WO2011003452A1 (en) 2009-07-09 2009-07-09 Device and method for making a core yarn

Publications (2)

Publication Number Publication Date
EP2452002A1 EP2452002A1 (en) 2012-05-16
EP2452002B1 true EP2452002B1 (en) 2016-03-30

Family

ID=42260391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09780379.5A Active EP2452002B1 (en) 2009-07-09 2009-07-09 Device and method for making a core yarn

Country Status (4)

Country Link
EP (1) EP2452002B1 (zh)
CN (1) CN102471952B (zh)
ES (1) ES2568205T3 (zh)
WO (1) WO2011003452A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3358054A1 (en) 2017-02-07 2018-08-08 Sanko Tekstil Isletmeleri Sanayi Ve Ticaret Anonim Sirketi Core spun yarn comprising core yarn composed of variable drafted filament yarn and/or elastane yarn and fabric obtained with this core spun yarn

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111519304B (zh) * 2020-04-28 2023-08-22 广东天海花边有限公司 一种可调包覆张力式包覆纱机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433229A (en) * 1987-07-27 1989-02-03 Kanebo Ltd Composite spun yarn and its production
JP2736673B2 (ja) * 1989-02-15 1998-04-02 東レ・デュポン株式会社 変り被覆弾性糸およびその製造方法
FR2736658B1 (fr) * 1995-07-11 1997-09-05 Snamo Sa Dispositif pour l'insertion d'un fil d'ame dans une meche de fibres
WO2008000102A1 (de) * 2006-06-30 2008-01-03 Amsler Tex Ag Verfahren und vorrichtung zur herstellung von kurzen garneffekten
EP2122022B1 (de) * 2006-12-05 2018-01-24 Amsler Tex AG Ringspinnmaschine mit vorrichtung zum zuführen von flammen
US20080318485A1 (en) 2007-06-20 2008-12-25 Chi Ping Cheng Core spun yarn and woven stretch fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3358054A1 (en) 2017-02-07 2018-08-08 Sanko Tekstil Isletmeleri Sanayi Ve Ticaret Anonim Sirketi Core spun yarn comprising core yarn composed of variable drafted filament yarn and/or elastane yarn and fabric obtained with this core spun yarn

Also Published As

Publication number Publication date
ES2568205T3 (es) 2016-04-28
CN102471952B (zh) 2015-07-08
WO2011003452A1 (en) 2011-01-13
EP2452002A1 (en) 2012-05-16
CN102471952A (zh) 2012-05-23

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