EP2253753B1 - Procédé pour coudre un produit de couture - Google Patents

Procédé pour coudre un produit de couture Download PDF

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Publication number
EP2253753B1
EP2253753B1 EP20100004996 EP10004996A EP2253753B1 EP 2253753 B1 EP2253753 B1 EP 2253753B1 EP 20100004996 EP20100004996 EP 20100004996 EP 10004996 A EP10004996 A EP 10004996A EP 2253753 B1 EP2253753 B1 EP 2253753B1
Authority
EP
European Patent Office
Prior art keywords
thread
sewing
roll
cut
needle
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
EP20100004996
Other languages
German (de)
English (en)
Other versions
EP2253753A2 (fr
EP2253753A3 (fr
Inventor
Klaus Stutznäcker
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.)
Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
Original Assignee
Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
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 Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG filed Critical Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
Publication of EP2253753A2 publication Critical patent/EP2253753A2/fr
Publication of EP2253753A3 publication Critical patent/EP2253753A3/fr
Application granted granted Critical
Publication of EP2253753B1 publication Critical patent/EP2253753B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B11/00—Machines for sewing quilts or mattresses
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread

Definitions

  • the present invention relates to a method for sewing a material, in particular from at least two, preferably large fabric layers by means of an upper and a lower thread, for example with lockstitch machines, in which a needle penetrates into the fabric with the upper thread and the upper thread is connected to the lower thread , whereupon the needle is withdrawn from the fabric.
  • the sewing unit may have a Nähgutauflage with a above the Nähgutauflage arranged presser foot and a needle bar, in which a plurality of needles are arranged.
  • the sewing unit has a number of grippers, in particular corresponding to the number of needles, which are fastened to a gripper bar.
  • Grippers and needles are moved in an oscillating manner in order to carry out, for example, chain stitches or double chain stitches or the like in the sewing material resting on the sewing material support.
  • the material to be sewn is preferably provided by the storage device in the form of unwinding from a roll of material. In this case, a separate roll of material is provided for each material layer.
  • a storage device discloses, for example, the DE 203 17 988 U1 , in which arranged according to the number of fabric layers horizontally one behind the other Material rolls are arranged.
  • a guide device is arranged for each roll of material, in which the respective roll of material of the fabric support is inserted. Such a guide device allows the storage of the roll of material with its lateral surface on a conveyor belt.
  • a further roll of material is provided by means of a lifting device, so that the lower roll of material can be replaced by lowering the arranged above her roll of material, as soon as the fabric of the lower roll of material has been completely unwound or should be changed.
  • the DE 10 2007 017 235 A1 relates to a sewing machine with a thread trimming mechanism.
  • This thread trimming mechanism is used for the simultaneous cutting of upper and lower thread below a Nähgutauflage.
  • the DE 40 32 0552 relates to a needle thread holding device for holding the leading end of the needle thread in a sewing machine with a thread cutting device.
  • the thread trimming device is arranged below a Nähgutauflage the sewing machine and serves the simultaneous cutting of needle thread and bobbin thread.
  • the invention has for its object to improve a generic method for sewing a material with regard to the removal of yarn ends.
  • the upper thread is stretched so that the lower thread connected to the upper thread is drawn with its end facing the fabric to above a needle facing surface, so that the end of the lower thread in the region of this surface is removable ,
  • the thread ends occur only on one surface, so that an opposite side of the material is formed on the production side without thread ends.
  • This makes it possible to significantly reduce the effort for the removal of thread ends, since only a single surface of the material to be treated with respect to the removal of the thread ends.
  • the method is particularly suitable for lockstitch machines in which by suitable control, the end of the lower thread can be pulled in a simple manner with the help of the upper thread to the needle-facing surface.
  • the upper thread is acted upon during the passage of the lower thread with a higher tensile stress. This can be achieved, for example, by the fabric being transported, so that an additional tension is applied to the upper thread, so that the lower thread with its end facing the fabric is pulled onto the surface facing the needle.
  • a further development provides that the bobbin thread is cut off before the tensioning of the upper thread at the end of a sewing section. In this way, a reliable separation of the lower thread can be achieved without the lower thread is subjected to an additional voltage, such as occurs when torn off. This allows the sewing result to be protected from damage.
  • the lower thread can be cut off by means of a suitable knife, a pair of scissors or the like. The cutting can be done automatically, so that manual intervention can be largely avoided.
  • the upper thread can be tensioned by moving the sewing material relative to the needle.
  • a simple controlled introduction of a tensile stress in the upper thread can be achieved.
  • the size of the tension can be adjusted accurately in a simple manner.
  • only such a large tensile stress is introduced into the upper thread, which is required to pull the end of the lower thread on the surface facing the needle. Too high tensile stresses in the upper thread could lead to a tearing of the upper thread.
  • the upper thread is tensioned by means of a tensioning device, in particular a tensioning lever.
  • the tensioning device can be automatically controlled so that it generates a tension in the upper thread at a given time at which the end of the lower thread is to be pulled through the fabric.
  • the clamping device may for this purpose have a clamping lever, which is preferably actuated by means of a drive.
  • the drive can be an electric, pneumatic or hydraulic drive.
  • the portion of the lower thread projecting beyond the surface is cut substantially flush with the surface, in particular cut off.
  • the separation can be carried out for example by tearing off.
  • the protruding part of the lower thread is cut off so that as far as possible no undesired tensile forces can occur on the lower thread.
  • the clipping also makes it possible to specify the location or the length of the separation exactly.
  • the cutting proves to be advantageous because it can be done simply and accurately on the one hand by means of a cutting knife and the second end of the thread end of the lower thread flush with the surface. There is thus no thread end protruding from the surface.
  • the lower threads are cut off with a maximum length of 10 mm. This embodiment proves to be advantageous if it is to be avoided that the seam can be solved. Due to the predetermined length, the automatic dissolution of a seam is largely avoided.
  • the cutting off of the portion of the lower thread projecting beyond the surface is carried out with at least one flat-type cutting device.
  • the flat-type cutting device can be designed, for example, in the form of a cutting head or the like.
  • the cutting head may for example have a support surface which is to be applied to the surface. Laterally projecting blades can grasp and cut off the end of the over-surface portion of the lower thread, preferably to a predetermined length that can be adjusted on the cutting head.
  • the length may be 10 mm.
  • the cutting head cuts off the end of the lower thread flush with the surface.
  • substantially each needle or pair of pins becomes one
  • the upper threads running on the surface and not sewn to the sewing material can preferably be cut centrally. This allows to remove the unsewn upper threads also from the fabric. It can be provided that the cutting is also carried out by means of the aforementioned cutting device. In addition, however, it may also be provided a separate cutting blade, which engages the upper thread on the surface and cuts substantially in the middle. In this way, individual seams of the sewing material can be separated.
  • the cut upper threads are cut off with the flat cutting device.
  • the cut ends of the upper threads can also be removed. A simple, fast and reliable removal of thread ends can be achieved. Manual interventions can essentially be completely avoided.
  • Fig. 1 shows a schematic side view of a storage device 10 for at least one sewing unit having sewing machine 14, are made with the mattress plates, which in the present case of three fabric layers 16, 18, 20 are each deducted from a roll of material 24, 26, 28.
  • the fabric layer 18 is made of elastic material, namely foam.
  • the fabric layer 20 forms a cover layer.
  • the fabric layer 16 is made of inelastic material.
  • the fabric layers 16, 18, 20 are deposited on each other when rolling and form the sewing material to be sewn, which is supplied to the sewing unit via non-designated guide rollers.
  • the supply of the fabric layers 16, 18, 20 is provided by the force acting on the fabric.
  • the fabric layers 16, 18, 20 deposited on each other are sewn together to form the sewing material.
  • the material is discharged via non-designated guide or deflection rollers which provide, inter alia, a tightening of the material in the exit region of the sewing unit, and fed to further processing.
  • each of the material rolls 24, 26, 28, a spare roll is mounted in each case, which serves to replace the material roll arranged thereunder.
  • FIG. 2 shows now a storage device 32 according to the invention with three roller supports 34.
  • Each roller receptacle 34 has in the present case two holders 42, which are each arranged in pairs vertically above one another.
  • the three roller receivers 34 are arranged horizontally one behind the other, so that the respective material layers can be deposited on one another during the removal of material rolls 24, 26, 28, 36, 38, 40 arranged in the holders 42.
  • Each holder 42 receives a respective material roll 24, 26, 28, 36, 38, 40.
  • Each of the material rolls 24, 26, 28, 36, 38, 40 is rotatably mounted on its respective holder 42.
  • Fig. 3 shows the storage device in a schematic side view.
  • the holders 42 are part of the roller holder 34. Of the arranged in one of the roller holder 34 material rollers 24, 26, 28, 36, 38, 40, the corresponding fabric layers are removable and the sewing unit can be fed.
  • the sewing unit is in the present case a sewing unit, as previously stated with respect to the prior art.
  • the holders 42 of the roller holder 34 are arranged substantially horizontally next to one another.
  • first fabric layer directly on the vertically adjacent roll of material 24 26, 28, 36, 38, 40 are switched by only a beginning of the second Fabric layer of the vertically adjacent roll of material is connected to the end of the first fabric layer.
  • each holder 42 has two spaced apart cantilevers 44 and extending between the cantilevers 44 axis of rotation 46 for receiving the respective roll of material 24, 26, 28, 36, 38, 40th
  • Each of the holders 42 has a plurality of rollers 48, which are rotatably mounted in the holder 42 and on which the roll of material 24, 26, 28, 36, 38, 40 can be placed. This can be on the rollers 48 resting material roll axially in the longitudinal direction of the holder 42 are moved without much effort.
  • This configuration makes it possible to replace not only the material roll 24, 26, 28, 36, 38, 40 simplified, but it also allows the roll of material 24, 26, 28, 36, 38, 40 to adjust in its axial position.
  • the storage device 32 consists of three roller receivers 34, which are each formed adjacent to each other for receiving two material rolls 24, 26, 28, 36, 38, 40 in a substantially vertical plane, so that rotation axes 46 the material rolls 24, 26, 28, 36, 38, 40 are aligned substantially parallel to each other.
  • Fig. 4 shows the roller receptacle 34 for the material rolls 16 and 24th
  • the upper holder 42 of the roller receptacle 34 has a receiving device 50 with which a roll of material 24, 26, 40 can be conveyed into the respective upper holder 42 ( FIGS. 4 to 6 ).
  • the receiving device 50 has a carriage 52 which has a bearing surface 54 which can be placed on the material roll 24, 26, 40.
  • the carriage 52 is movable relative to the holder 42 between an inserted and an extended position and formed in an aligned with the extended position end position relative to the holder 42 angled ( FIGS. 5 and 6 ).
  • the carriage 50 can be pivoted about an axis 56, so that it can be bent in the extended end position to the holder 42 such that the roll of material 24, 26, 40 simply removed or. can be used.
  • the carriage 52 is formed in longitudinal section L-shaped.
  • the carriage 52 forms a leg 58 as a supporting system for the roll of material 24, 26, 40.
  • the roll of material 24, 26, 40 are replaced in a simple manner.
  • the support surface 54 is presently formed of a plurality of rotatably mounted in the carriage 52 rollers 48. By the rollers 48, the roll of material 24, 26, 40 can be moved in the retracted position of the carriage 52 without great effort in the desired axial position.
  • a linear motor 60 is articulated, with which the carriage 52 can be moved between the retracted and the extended position. A manual intervention for positioning the carriage 52 can thus be substantially saved.
  • the arrangement of the carriage 52 and the articulation of the linear motor 60 also allows the carriage 52 can be tilted during its movement at the same time also in the appropriate position. An ejection of the carriage 52 thus also causes at the same time tilting about the axis 56, so that with a single drive the carriage 52 can be moved from its material preparation position in its role change position (see. 4 to 6 ).
  • the linear motor 60 is designed as a pneumatic cylinder.
  • the linear motor can of course also be designed as a hydraulic cylinder or by using a tension spring as an energy storage.
  • the roller holder 34 has a support frame 62, on which the holder 42 are formed as two spaced apart with the support frame 62 cantilevers 44, between which a roll of material 24, 26, 28, 36, 38, 40 is rotatably mounted.
  • a rod as a rotation axis 46 can be inserted, which rod or roller, the material roll 24, 26, 28, 36, 38, 40 passes through centrally.
  • a respective cantilever 44 of each holder 42 is displaceable relative to the support frame 62, namely formed about an axis parallel to the axis of rotation 46 extending axis. This makes it possible to pivot away the respective cantilever arm 44 preferably downwards, so that the carriage 52 is released for movement of the respective material roll 24, 26, 40 in the axial direction with the material roll 24, 26, 40 placed thereon.
  • each case two holders 42 of a roller receptacle 34 are assigned a connecting and guiding device 64 for the material layers to be deducted from the material rolls 24, 26, 28, 36, 38, 40.
  • the connecting and guiding device 64 has two spaced-apart clamping devices with which the respective material layer can be clamped. Not shown is that each clamping device has at least one relative to the fabric position pivotable roller.
  • Fig. 2 shows, it is provided that the material rolls 24, 26, 28 provide fabric layers 16, 18, 20, which are stored on each other and the sewing unit via unspecified deflection and guide rollers are supplied.
  • the fabric layers 16, 18, 20 are sewn in this case to mattress panels.
  • Two material rolls 24, 26, 28, 36, 38, 40 with material layers 16, 18, 20 are arranged in the storage device 32 in two holders 42 of a roll receptacle 34, wherein a first fabric layer 16, 18, 20 of a holder 42 of the roll receiving 34 withdrawn and the sewing machine 14 is supplied.
  • the above or below the first fabric layer 16, 18, 20 arranged fabric layer 16, 18, 20 deducted from the respective second roll of material 24, 26, 28, 36, 38, 40 in the second holder 42 of the corresponding roll holder 34 and the Sewing machine 14 are supplied.
  • the second fabric layer 16, 18, 20 is connected to the end of the first fabric layer 16, 18, 20.
  • the first fabric layer 16, 18, 20 can be cut off at its end substantially perpendicular to its longitudinal extent prior to connection to the second fabric layer 16, 18, 20, to form a straight edge.
  • the ends to be joined together are butted against each other and connected to each other with an adhesive strip both ends.
  • the second material layer 16, 18, 20 is thus automatically conveyed through the first material layer 16, 18, 20 to the sewing unit for the continuation of the sewing process.
  • Assembly operations for exchanging material rolls 24, 26, 28, 36, 38, 40 can thus be reduced to a minimum or take place independently of the respective production process.
  • the fabric layers 16, 18, 20 are stored in the form of material rolls 24, 26, 28, 36, 38, 40 in the roll receptacle 34 one above the other. Material rolls 24, 26, 28, 36, 38, 40 arranged in the holders 42 of a roll receptacle 34 have the same or at least similar materials with regard to the essential properties for the sewing process.
  • the fabric layers 16, 18, 20 to be joined together are fixed relative to one another in the position prior to joining their ends.
  • the material rolls 24, 26, 28, 36, 38, 40 are shifted in their axial position to each other.
  • FIGS. 7 to 11 From the FIGS. 7 to 11 is a method for sewing material to be seen 72, which is formed of two large fabric layers 16, 18 which are connected by means of an upper and a lower thread 66, 68.
  • a needle 70 of a sewing unit not shown penetrates into the sewing material 72 with the upper thread 66.
  • the upper thread 66 is connected to the lower thread 68, whereupon the needle 70 is withdrawn from the fabric 72 ( Fig. 7 ).
  • a cutting device 74 is arranged below the sewing material 72, that is, in the region of the surface of the sewing material 72 facing away from the needle, which cuts off the lower thread 68 (FIG. Fig. 8 ).
  • the fabric 72 is displaced in the transport direction, whereby the upper thread 66 is tensioned such that the lower thread 68 connected to the upper thread 66 facing with its free end 78 to above one of the needle 70 Surface 76 is pulled so that the end 78 of the lower thread 68 in the region of this surface 76 is removable.
  • the lower thread 68 is cut off before tensioning the upper thread 66 at the end of a sewing section.
  • a tensioning of the upper thread 66 by an independent, not shown tensioning lever done ( Fig. 9 ).
  • a cutting device 80 is provided, which will be described below ( FIGS. 13, 14 ).
  • the lower threads 68 are cut off such that their free ends 78 projecting beyond the surface 76 have a maximum length of 10 mm.
  • the cutting of over the surface 76 protruding part of the Lower thread 68 is executed with a flat cutting device 80. It is contemplated that substantially each needle 70 is associated with a cutter 80.
  • the upper thread 66 is cut when it rests on the surface 76 due to a transport of the material 72 between the end of a seam and the beginning of a following seam ( Fig. 10 ).
  • the knife 82 movable transversely to the transport direction has a cutting edge 84.
  • the cutting edge 84 is inclined relative to the surface 76 and runs at an acute angle to this.
  • yarn ends 86 of the upper thread 66 are generated.
  • the thread ends 86 can then together with the thread ends 78 of the lower thread 68 in one operation by means of the cutting device 80 (FIG. FIGS. 13 and 14 ) are cut off.
  • the yarn ends of the lower threads and / or the upper threads are blown or sucked with air, so that a safe cutting process is given ..
  • the cutting device 80 has two flat-shaped cutting plates 88, which are arranged substantially parallel to each other and slidable to each other. On one side, the two cutting plates 88 sawtooth-like projections in the form of a sawtooth profile 90, which cause in the case of displacement of the cutting plates 88 along the extension of the sawtooth 90 against each other at their adjacent edges a cutting action.
  • the cutter 80 is used for the purpose of cutting the yarn ends 78, 86 along the surface 76 of the fabric 72. By appropriate selection of the cutting plates 88, the length of the thread ends 76, 86 can be adjusted.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (10)

  1. Procédé de couture en machine d'une matière à coudre (72), notamment composée d'au moins deux couches en matière à coudre (16, 18) présentant de grandes surfaces, par moyen d'une machine à coudre pour point noué deux fils, dans lequel une aiguille (70) comportant le fil supérieur (66) pénètre dans la matière à coudre (72) et le fil supérieur (66) est relié au fil inférieur (68), après quoi l'aiguille est retirée de la matière à coudre (72),
    caractérisé en ce que
    le fil supérieur (66) est tendue de façon que le fil inférieur (68) relié au fil supérieur (66) soit tiré avec son extrémité faisant face à la matière à coudre (72) jusqu'au dessus d'une surface (76) faisant face à l'aiguille (70), de sorte que l'extrémité (78) du fil inférieur (68) peut être enlevée au niveau de cette surface.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le fil inférieur (68) est découpé à l'extrémité d'une section à coudre avant que le fil supérieur (66) soit tendu.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    le fil supérieur (66) est tendu en ce que la matière à coudre (72) est déplacée par rapport à l'aiguille (70).
  4. Procédé selon la revendication 1,
    caractérisé en ce que
    le fil supérieur (66) est tendu par moyen d'un dispositif de tension, notamment d'un levier de tension.
  5. Procédé selon la revendication 1,
    caractérisé en ce que
    la partie du fil inférieur (68) qui fait saillie au-delà de la surface (76) est séparée, notamment découpée de sorte que le fil inférieur (68) affleure essentiellement avec la surface (76).
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    les fils inférieurs (68) sont coupés d'une longueur de maximum 10 mm.
  7. Procédé selon la revendication 5,
    caractérisé en ce que
    la découpe de la partie (78) du fil inférieur (68) qui fait saillie au-delà de la surface (76) se fait à l'aide d'au moins un dispositif de coupe (80) qui travaille sur la surface.
  8. Procédé selon la revendication 7,
    caractérisé en ce qu'
    un dispositif de coupe est essentiellement attribué à chaque aiguille (70) ou à des paires d'aiguilles.
  9. Procédé selon la revendication 1,
    caractérisé en ce que
    les fils supérieurs (66) qui s'étendent sur la surface (76) et ne sont pas cousus avec la matière à coudre sont de préférence coupés au centre.
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    les fils supérieurs (66) coupés sont découpés à l'aide du dispositif de coupe (80) qui travaille sur la surface.
EP20100004996 2009-05-12 2010-05-12 Procédé pour coudre un produit de couture Active EP2253753B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009020961 2009-05-12
DE102009036988A DE102009036988A1 (de) 2009-05-12 2009-08-12 Verfahren zum Nähen eines Nähguts

Publications (3)

Publication Number Publication Date
EP2253753A2 EP2253753A2 (fr) 2010-11-24
EP2253753A3 EP2253753A3 (fr) 2011-10-19
EP2253753B1 true EP2253753B1 (fr) 2014-03-12

Family

ID=42674595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100004996 Active EP2253753B1 (fr) 2009-05-12 2010-05-12 Procédé pour coudre un produit de couture

Country Status (3)

Country Link
EP (1) EP2253753B1 (fr)
CN (1) CN101886310B (fr)
DE (1) DE102009036988A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106192221A (zh) * 2016-08-17 2016-12-07 东莞永腾自动化设备有限公司 一种电脑绗缝机的去线头缝纫方法
DE102017201240A1 (de) * 2017-01-26 2018-07-26 Dürkopp Adler AG Verfahren zur Erzeugung eines Naht-Anfangsoberfadens einer in Nähgut auszubildenden Naht mit einem definierten Soll-Nahtüberstand sowie Nähmaschine zur Durchführung eines derartigen Verfahrens
DE102017207626A1 (de) * 2017-05-05 2018-11-08 Dürkopp Adler AG Verfahren zum Erzeugen eines Naht-Endunterfadens mit vorgegebenem Soll-Nahtüberstand
CN113106644B (zh) * 2021-04-16 2023-07-04 安正时尚集团股份有限公司 一种高保温性面料服饰的加工装置及其加工方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE868830C (de) * 1940-12-28 1953-02-26 Singer Mfg Co Selbsttaetige Vorrichtung zum Abtrennen von Fadenketten an bzw. zwischen aufeinanderfolgenden Werkstuecken fuer Naehmaschinen
GB894657A (en) * 1958-05-26 1962-04-26 Singer Mfg Co Thread-end holder for sewing machines
JPH0759268B2 (ja) * 1989-10-31 1995-06-28 ブラザー工業株式会社 糸切り機構付きミシンの上糸端部保持装置
JP2001300169A (ja) * 2000-04-26 2001-10-30 Yamato Sewing Mach Co Ltd 二重環縫いミシン
DE20317988U1 (de) 2003-05-20 2004-09-30 Nähmaschinenfabrik Emil Stutznäcker GmbH & Co KG Vielnadelnähmaschine
JP4324853B2 (ja) * 2003-09-02 2009-09-02 ヤマトミシン製造株式会社 縫目構造
JP2007282747A (ja) * 2006-04-14 2007-11-01 Juki Corp ミシン
JP5073272B2 (ja) * 2006-11-17 2012-11-14 Ｊｕｋｉ株式会社 ミシン

Also Published As

Publication number Publication date
EP2253753A2 (fr) 2010-11-24
CN101886310B (zh) 2014-01-08
EP2253753A3 (fr) 2011-10-19
CN101886310A (zh) 2010-11-17
DE102009036988A1 (de) 2010-12-16

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