EP2366817B2 - Machine de filature - Google Patents

Machine de filature Download PDF

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Publication number
EP2366817B2
EP2366817B2 EP09828783.2A EP09828783A EP2366817B2 EP 2366817 B2 EP2366817 B2 EP 2366817B2 EP 09828783 A EP09828783 A EP 09828783A EP 2366817 B2 EP2366817 B2 EP 2366817B2
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EP
European Patent Office
Prior art keywords
yarn
unit
yarn path
spinning machine
disposed
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
EP09828783.2A
Other languages
German (de)
English (en)
Other versions
EP2366817B1 (fr
EP2366817A1 (fr
EP2366817A4 (fr
Inventor
Hideshige Mori
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • 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
    • 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
    • D01H4/48—Piecing arrangements; Control therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a spinning machine including a draft process unit, a pneumatic spinning unit, a winding unit.
  • This type of spinning machine is known as disclosed in WO 2006/122605 A1 (see Fig. 1 ), for example.
  • a draft process unit, a pneumatic spinning unit, a delivery roller, a winding unit and the like are arranged linearly along a yarn path, which extends from bottom to top, above cans that house sliver (fiber bundle).
  • JP 59-043126 A1 describes a blow spinning comprising a plurality of nozzle-type spinning stations, each spinning station receiving a spinning can and having a drawing unit, a nozzle-type spinning unit, and a winding unit.
  • the drawing unit and the spinning unit may be provided in a horizontal position, a vertical position or an intermediate position inclined upwards.
  • JP 2006-306588 A describes a yarn slack eliminating device in a textile machine which allows a yarn hooking member to offer a stable rotational resistance to a slack eliminating roller to enable the formation of packages of a stable quality.
  • An object of the present invention is to improve production of a package by realizing easy handling and maintenance of the units in the spinning machine.
  • the easiest way is to reduce the size of the can in the up and down direction.
  • the capacity of the can is reduced so that the sliver inside runs out faster.
  • the cans need to be exchanged more frequently, and the efficiency of manufacturing a package is reduced. Therefore, it is not preferable to downsize the can for avoiding an increase in the size of the spinning machine in the up and down direction of the spinning machine.
  • a spinning machine includes a draft process unit, a pneumatic spinning unit, a yarn-accumulating device, and a winding unit.
  • the draft process unit draws a sliver.
  • the pneumatic spinning unit twists the sliver drawn by the draft process unit and delivers a spun yarn.
  • a yarn-accumulating device temporarily accumulates the spun yarn delivered from the pneumatic spinning unit.
  • the winding unit winds the spun yarn so as to form a package.
  • a yarn path in a unit configuration section where the draft process unit, the pneumatic spinning unit, the yarn-accumulating unit, and the winding unit are disposed includes a first yarn path which is horizontal or inclined gently, and a second yarn path which continues from the first yarn path and is guided by the yarn-accumulating device to a different direction from that of the first yarn path.
  • the draft process unit and the pneumatic spinning unit are disposed in the first yarn path, and the winding unit is disposed at a downstream end of the second yarn path.
  • “inclined gently” means to be inclined upward or downward at an angle of 45 degrees or less.
  • the shape of the yarn path, as a whole, may look like a " ⁇ " or "L”, or may look like a mirrored image thereof.
  • an up and down distance between the lower end of the first yarn path and the upper end of the second yarn path can be reduced by nearly 50% compared with a conventional spinning machine.
  • the size of the unit configuration section in the up and down direction By reducing the size of the unit configuration section in the up and down direction, the total size of the spinning machine in the up and down direction can be reduced. Therefore, the operator can access a unit in the upper part of the spinning machine without having to use a workbench, so that handling and maintenance of the units can be performed easily and accurately.
  • the efficiency of the spinning machine can be improved, and overall production of a package can be enhanced.
  • the size of the spinning machine in the up and down direction is reduced compared with the conventional spinning machine, and the winding unit can be disposed at a position lower than that of the winding unit in a conventional spinning machine.
  • a doffing unit of an automatic winder can be shared.
  • the yarn-accumulating device also serves as a direction-changing guide. Because it is not necessary to provide a dedicated direction-changing guide, the entire structure of the spinning machine can be simplified. In addition, the tension of the spun yarn temporarily accumulated in the yarn accumulating-device is not related to its bending angle, and it can be set to have a smaller value than that of the spun yarn before and after the yarn-accumulating device. Therefore, when the yarn-accumulating device serves as the direction-changing guide, the spun yarn can be bent considerably without imposing a large load on the spun yarn.
  • the draft process unit and the pneumatic spinning unit are disposed in the first yarn path, and the winding unit is disposed at the downstream end of the second yarn path. Therefore, the doffing of a package or exchange of a winding core in the winding unit can be easily and accurately accomplished at the downstream end of the second yarn path.
  • An angle formed between the second yarn path and the first yarn path is an acute angle.
  • the size of the spinning machine in the up and down direction can be sufficiently reduced.
  • the spinning machine may further include a delivery roller disposed downstream of the first yarn path for delivering the spun yarn delivered from the pneumatic spinning unit.
  • the delivery roller may be disposed at an inner side of a portion of the yarn path where the direction is changed from the first yarn path to the second yarn path.
  • both the delivery roller and the yarn-accumulating device serve as direction-changing guides. Therefore, even if the bending angle from the first yarn path to the second yarn path is small, the spun yarn can be smoothly guided to the second yarn path.
  • the bending angle of the spun yarn at each member can be set larger. Therefore, the tension applied to the spun yarn at each direction-changing guide can be reduced substantially. Thus, the load imposed on the spun yarn can be reduced, and malfunctions such as a break of the spun yarn can be reliably prevented.
  • a contact angle of the spun yarn with respect to the delivery roller may be 90 degrees or less. In this spinning machine, there is little probability that the spun yarn tangles around the delivery roller. Therefore, productivity of the spinning machine is less likely to decrease.
  • the delivery roller may be made of a material having a high abrasive resistance. In this spinning machine, the roller does not need to be exchanged as frequently, so that operation efficiency of the spinning machine is less likely to decrease.
  • An upstream side of the draft process unit and the winding unit may be disposed on the side closer to a passageway from where an operator operates the spinning machine.
  • the yarn-accumulating device may be disposed behind the draft process unit and the winding unit when viewed from the passageway. Note that the position of the direction-changing guide, when viewed from the passageway, may be on the straight line connecting the draft process unit and the winding unit, or at a position laterally shifted from the straight line. In this spinning machine, because the upstream side of the draft process unit is disposed on the side closer to the passageway for the operator, the operator can easily introduce the sliver to the upstream side.
  • the winding unit is disposed on the passageway side, it is possible for the operator to doff a package and exchange a winding core easily and accurately.
  • the total size of the spinning machine in the up and down direction can be reduced while an arrangement of units desired for the operator is realized.
  • the width of the spinning machine when viewed from the passageway, is smaller when compared with the case in which the entire first yarn path and second yarn path is disposed on the passageway side. Therefore, more spinning machines can be installed along the passageway.
  • the entire first yarn path and second yarn path may also be disposed on the side closer to the passageway for the operator.
  • the operator can easily access all the units disposed along both yarn paths. Therefore, the operator can easily handle and maintain the units. In other words, the total size of the spinning machine in the up and down direction can be reduced while an arrangement of the units desired for the operator is realized.
  • each unit can be handled and maintained easily, so that production of a package can be improved.
  • Figs. 1 to 3 illustrate an embodiment of a spinning machine according to the present invention.
  • a group of spinning machines 4 is arranged linearly with respect to a base frame 1.
  • the arrangement direction of the group of spinning machines 4 is defined as the left and right direction
  • the direction perpendicular to the left and right direction in the horizontal plane is defined as the front and rear direction.
  • the direction perpendicular to a floor surface on which the base frame 1 is installed is defined as the up and down direction.
  • the orientation of the left, front, upper, and the orientation of the right, rear, lower are illustrated in Figs. 1 and 2 with crossing arrows.
  • a motor box 2 is disposed at the left end of the base frame 1.
  • a blower box 3 is disposed at the right end of the base frame 1.
  • a housing portion 7 is disposed for housing cans 10, which store slivers S.
  • a unit configuration section 8 is disposed in which units constituting the spinning machine 4 are arranged.
  • the spinning machine 4 is used for manufacturing a package P by winding a spun yarn Y from the sliver S as raw material, and one can 10 is disposed for each of the spinning machines 4.
  • the can 10 has a cylindrical shape with a closed bottom surface and an upper opening, and has the same size as the can used in the conventional spinning machine.
  • the can 10 may also be formed in a rectangular tubular shape.
  • a yarn path of the spinning machine 4 in the unit configuration section 8 has substantially a shape like " ⁇ " constituted of a first yarn path R1 and a second yarn path R2 as illustrated in Figs. 1 and 3 .
  • the first yarn path R1 is constituted of a horizontal yarn path extending from the front side to the rear side of the lower part of the unit configuration section 8.
  • the second yarn path R2 is constituted of a yarn path continuing from the first yarn path R1, and is guided so as to change the direction of the yarn from going towards the rear side to the direction towards the front side of the upper part of the unit configuration section 8 in an obliquely upward manner.
  • the first yarn path R1 is constituted not of a strictly straight line in the front and rear direction, but a bent line that is substantially a straight line with parts bending in the up and down direction or in the left and right direction.
  • the direction of the second yarn path R2 may change in the left and right direction within a traverse width of a traverse drum 28 of a winding unit 17, and the center of the traverse width can be regarded as a representative of the yarn path.
  • the spinning machine 4 is constituted of individual units, including a sliver guide 11, a draft process unit 12, a pneumatic spinning unit 13, a delivery roller 14, a yarn-accumulating device 15, a yarn clearer 16, the winding unit 17, and the like.
  • the sliver guide 11, the draft process unit 12, the pneumatic spinning unit 13, and the delivery roller 14 are arranged in this order along the first yarn path R1.
  • the yarn-accumulating device 15, the yarn clearer 16, and the winding unit 17 are arranged in this order along the second yarn path R2.
  • the draft process unit 12 is a device which draws the sliver S to form the fiber bundle and delivers the fiber bundle to the pneumatic spinning unit 13.
  • the draft process unit 12 is constituted of four pairs of draft rollers nipping and drawing the sliver S.
  • the pairs of draft rollers are driven by a motor (not shown) and rotate in response thereto.
  • a back roller pair 21, a third roller pair 22, a second roller pair 23 around which an apron belt is wound, and a front roller pair 24, each of which being constituted of a pair of top and bottom rollers, are arranged in the front and rear direction from the upstream side in the first yarn path R1.
  • the rotation speed of the draft roller pairs 21 to 24 increases towards the downstream side.
  • the sliver S passes through the draft process unit 12, the sliver S is sent to the downstream side and is drawn to be a predetermined thinness based on a ratio between the rotation speeds of neighboring draft roller pairs.
  • the back roller pair 21 on the upstream side is disposed at the front side of the base frame 1, i.e. the side closer to the passageway for the operator. Thus, the operator can easily introduce the sliver S to the back roller pair 21.
  • the pneumatic spinning unit 13 is a device which applies a whirling air current to the fiber bundle so as to spin truly-twisted spun yarn Y
  • the pneumatic spinning unit 13 includes a pneumatic spinning nozzle, which forms the whirling air current, and a hollow guide shaft.
  • the pneumatic spinning nozzle and the hollow guide shaft work together so that the whirling air current blows to the sliver S and twists the sliver S. As a result, the spun yarn Y is formed.
  • the delivery roller 14 and a nip roller 26 are devices disposed on the downstream side of the pneumatic spinning unit 13 for delivering the yarn.
  • the delivery roller 14 is disposed above the nip roller 26, and more specifically, right above the nip roller 26.
  • the delivery roller 14 is driven by a motor (not shown) and rotates in response thereto.
  • the nip roller 26 is a roller that, when working together with the delivery roller 14, nips the spun yarn Y.
  • the delivery roller 14 is formed of a metallic material having high abrasive resistance, such as iron or aluminum, and the surface of the nip roller 26 is formed of an elastic material, such as rubber.
  • the yarn-accumulating device 15 has a cylindrical shape with a tapered flange on its downstream side in the second yarn path R2.
  • the shape of the yarn-accumulating device 15 is not limited to the illustrated one. As long as the spun yarn Y delivered from the pneumatic spinning unit 13 can be temporarily stored, the shape may also be a cylindrical shape with a tapered flange on the upstream side in the second yarn path R2.
  • the yarn-accumulating device 15 is disposed above the delivery roller 14, and more specifically, slightly shifted towards the rear above the delivery roller 14. In addition, the rotation axis of the yarn-accumulating device 15 extends obliquely upward when viewed from the rear to the front of the device.
  • the spun yarn Y is guided into the yarn-accumulating device 15 in the direction perpendicular to the rotation axis of the yarn-accumulating device 15 and is wound spirally around the outer circumferential surface thereof so as to be accumulated.
  • the accumulated spun yarn Y is drawn out in the direction of the rotation axis of the yarn-accumulating device 15, and after the yarn clearer 16 checks the spun yarn Y for any yarn defect, the spun yarn Y is wound by the winding unit 17.
  • the winding unit 17, which is located at the downstream end of the second yarn path R2 and at the uppermost part of the spinning machine 4, includes the traverse drum 28 which traverses the spun yarn Y along the center axis direction of the package P, a cradle arm 29 which supports a winding core of the package P, and the like.
  • the cradle arm 29 is urged by swinging urging means (not shown) in such a direction that the package P is in contact with the traverse drum 28.
  • the traverse drum 28 rotates while being in contact with the package P so as to apply a torque to the package P.
  • the winding unit 17 is disposed at the front side of the base frame 1, i.e. the side closer to the passageway for the operator. Thus, the operator can doff the package P and exchange the winding core easily and accurately.
  • both the delivery roller 14 and the yarn-accumulating device 15 serve as a direction-changing guide.
  • the spun yarn Y delivered from the pneumatic spinning unit 13 is guided by the delivery roller 14 and the yarn-accumulating device 15 such that its direction changes to an obliquely frontward and upward direction, and is delivered to the second yarn path R2.
  • the spun yarn Y is bent at an obtuse angle by the delivery roller 14 and is bent at a right angle by the yarn-accumulating device 15.
  • a bending angle ⁇ between the first yarn path R1 and the second yarn path R2 is an acute angle.
  • This bending angle ⁇ is preferably 90 degrees or less, so that the size of the unit configuration section 8 in the up and down direction is small.
  • the yarn path is bent at an obtuse angle by the delivery roller 14.
  • the delivery roller 14 is disposed at an inner side of a portion of the yarn path where the direction is changed from the first yarn path R1 to the second yarn path R2
  • the nip roller 26 is disposed at an outer side of the portion of the yarn path where the direction is changed from the first yarn path R1 to the second yarn path R2.
  • the spinning machine 4 has a structure in which the delivery roller 14, which is made of a metal having high abrasive resistance, is used for bending the yarn path.
  • the yarn path is bent while good utilization rate of the spinning machine 4 is maintained, so that a spinning machine 4 having a reduced base frame height can be realized.
  • a contact angle ⁇ of the spun yarn Y around the delivery roller 14 is 90 degrees or less. If the contact angle y is 90 degrees or more, i.e. the spun yarn Y is in contact with the delivery roller 14 for a larger area, the running spun yarn Y may fail to be delivered to the yarn-accumulating device 15 and tangles around the delivery roller 14. If the spun yarn Y tangles around the delivery roller 14, the running of the spun yarn Y is stopped by the delivery roller 14 and the spun yarn Y cannot be wound around the package P. As a result, productivity of the spinning machine 4 is deteriorated.
  • the contact angle ⁇ is set to 90 degrees or less.
  • the yarn path of the spinning machine 4 in the unit configuration section 8 is formed to have a shape like " ⁇ ", and includes the first yarn path R1 arranged laterally from the front side to the rear side in the lower part of the unit configuration section 8, and the second yarn path R2 that continues from the first yarn path R1 and is guided to a different direction from that of the first yarn path R1 and extends to the upper part of the unit configuration section 8.
  • a distance in the up and down direction between the lower end of the first yarn path R1 and the upper end of the second yarn path R2 is reduced by almost 50%, compared with the conventional arrangement, to be approximately 600 mm.
  • a distance in the up and down direction between the floor and the winding unit 17 can be approximately 1800 mm, which is just a little higher than the height of a typical operator. Therefore, the operator can access the winding unit 17 without using a workbench. Thus, the operator can handle and carry out maintenance work on the winding unit 17 easily and accurately. Further, the operator can doff the package P and exchange the winding core thereof easily and accurately. In this way, the efficiency of the spinning machine can be improved, and overall production of the package P can be improved.
  • the present invention can be widely applied to spinning machine that includes units such as a draft process unit, a pneumatic spinning unit, and a winding unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Claims (6)

  1. Machine de filature, comprenant:
    une unité de traitement d'étirage (12) configurée pour étirer un ruban (S);
    une unité de filature pneumatique (13) aménagée pour tordre le ruban (S) étiré par l'unité de traitement d'étirage (12) et délivrer un fil filé (Y); et
    une unité d'enroulement (17) aménagée pour enrouler le fil filé (Y) de manière à former un paquet,
    dans laquelle
    un trajet de fil dans un segment de configuration d'unité (8), où sont disposées l'unité de traitement d'étirage (12), l'unité de filature pneumatique (13) et l'unité d'enroulement (17), comporte un premier trajet de fil (R1) aménagé de manière à être horizontal ou légèrement incliné vers le haut ou vers le bas à un angle de 45 degrés ou moins, et un deuxième trajet de fil (R2) aménagé de manière à continuer depuis le premier trajet de fil (R1) dans une direction différente de celle du premier trajet de fil (R1), et
    l'unité de traitement d'étirage (12) et l'unité de filature pneumatique (13) sont disposées dans le premier trajet de fil (R1),
    caractérisée par le fait que
    le segment de configuration d'unité (8) comprend par ailleurs un dispositif d'accumulation de fil (15) aménagé de manière à accumuler temporairement le fil filé (Y) délivré par l'unité de filature pneumatique (13);
    le deuxième trajet de fil (R2) est guidé par le dispositif d'accumulation de fil (15) vers la direction différente ;
    le deuxième trajet de fil (R2) s'étend vers le haut de manière oblique jusqu'à une partie supérieure du segment de configuration d'unité (8) ;
    l'unité d'enroulement (17) est disposée à une extrémité aval du deuxième trajet de fil (R2), et
    un angle entre le deuxième trajet de fil (R2) et le premier trajet de fil (R1) est un angle aigu.
  2. Machine de filature selon la revendication 1, comprenant par ailleurs un rouleau de délivrance (14) disposé en aval du premier trajet de fil (R1) et aménagé de manière à délivrer le fil filé (Y) délivré par l'unité de filature pneumatique (13), dans laquelle
    le rouleau de délivrance (14) est disposé d'un côté intérieur d'une partie du trajet de fil où la direction est changée du premier trajet de fil (R1) au deuxième trajet de fil (R2).
  3. Machine de filature selon la revendication 2, dans laquelle un angle de contact du fil filé (Y) par rapport au rouleau de délivrance (14) est de 90 degrés ou moins.
  4. Machine de filature selon la revendication 2 ou 3, dans laquelle le rouleau de délivrance (14) est réalisé en un matériau présentant une haute résistance à l'abrasion.
  5. Machine de filature selon l'une quelconque des revendications 1 à 4, dans laquelle
    un côté amont de l'unité de traitement d'étirage (12) et l'unité d'enroulement (17) sont disposés d'un côté plus près d'un passage d'où un opérateur fait fonctionner la machine de filature, et
    le dispositif d'accumulation de fil (15) est disposé derrière l'unité de traitement d'étirage (12) et l'unité d'enroulement (17), lorsque vu depuis le passage.
  6. Machine de filature selon l'une quelconque des revendications 1 à 4, dans laquelle l'ensemble du premier trajet de fil (R1) et du deuxième trajet de fil (R2) est disposé d'un côté plus près d'un passage pour un opérateur faisant fonctionner la machine de filature.
EP09828783.2A 2008-11-28 2009-11-04 Machine de filature Not-in-force EP2366817B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008303398A JP2012031523A (ja) 2008-11-28 2008-11-28 紡績機
PCT/JP2009/005844 WO2010061533A1 (fr) 2008-11-28 2009-11-04 Machine de filature

Publications (4)

Publication Number Publication Date
EP2366817A1 EP2366817A1 (fr) 2011-09-21
EP2366817A4 EP2366817A4 (fr) 2012-05-30
EP2366817B1 EP2366817B1 (fr) 2013-07-31
EP2366817B2 true EP2366817B2 (fr) 2018-01-10

Family

ID=42225423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09828783.2A Not-in-force EP2366817B2 (fr) 2008-11-28 2009-11-04 Machine de filature

Country Status (4)

Country Link
EP (1) EP2366817B2 (fr)
JP (1) JP2012031523A (fr)
CN (1) CN102216505B (fr)
WO (1) WO2010061533A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2014125714A (ja) * 2012-12-27 2014-07-07 Murata Mach Ltd 紡績機
CN103225142A (zh) * 2013-04-09 2013-07-31 经纬纺织机械股份有限公司 一种预加捻细纱机
JP2017001836A (ja) * 2015-06-11 2017-01-05 村田機械株式会社 糸巻取機及び紡績機
CN109735977B (zh) * 2019-03-13 2023-09-19 安徽新雅新材料有限公司 交变牵伸五通道纺纱装置及变支变比变捻纱线的纺制方法

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WO2010061533A1 (fr) 2010-06-03
EP2366817B1 (fr) 2013-07-31
JP2012031523A (ja) 2012-02-16
EP2366817A1 (fr) 2011-09-21
CN102216505A (zh) 2011-10-12
EP2366817A4 (fr) 2012-05-30
CN102216505B (zh) 2013-11-06

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