EP2251469B1 - Flat knitting machine with sinkers - Google Patents
Flat knitting machine with sinkers Download PDFInfo
- Publication number
- EP2251469B1 EP2251469B1 EP20090006565 EP09006565A EP2251469B1 EP 2251469 B1 EP2251469 B1 EP 2251469B1 EP 20090006565 EP20090006565 EP 20090006565 EP 09006565 A EP09006565 A EP 09006565A EP 2251469 B1 EP2251469 B1 EP 2251469B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hold
- needle
- knitting machine
- sinker
- flat bed
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/06—Sinkers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/88—Take-up or draw-off devices for knitting products
- D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines
Definitions
- the invention relates to a flat knitting machine with opposing needle beds and longitudinally slidably disposed needles, each needle is associated with a hold-down plate, which is arranged adjustable between a closed position and an open position.
- hold-down boards in flat knitting machines has been known for some time.
- DE 39 35 763 A1 a flat knitting machine with hold-down boards, which act in addition to rigidly arranged mesh images and which are pivoted by means of control cams in their closed and open positions.
- the hold-down surfaces of the sinkers are angled, resulting in a hook-shaped profile of the top of the hold-down boards.
- the hold-down surface In the closed position, the hold-down surface reaches relatively far below the plane defined by the underside of the needles. Due to this pronounced closed position and the hook-shaped design of the hold-down boards, while these can fulfill their hold-down function outstandingly, they exert a relatively high force on the loop to be retained.
- the EP 1 347 088 B1 describes a further embodiment of hold-down plates, which also have a hook-shaped tip and exercise by a deep closed position of the hold-down a similarly strong force on the mesh. Again, it can come to the bursting of stitches.
- the two known hold-down plates can also be pivoted due to their storage close to the stitch formation area of the needle bed only in a relatively limited opening position. In the opening position, the hold-down surfaces of the boards are still within the hook interior of their associated needle.
- the tip of the hold-down plate pierces parts of the knitting thread, which is in the hook of a withdrawal movement exporting knitting needle and with which the new stitch is to be formed.
- Another retraction movement of the needle ruptures the portion of the knitting thread that has been caught by the hold-down plate. This is visible on the surface of the knitted fabric and leads to an impairment of the knitted piece.
- the invention has for its object to provide a flat knitting machine, the hold-down boards allow the processing of yarns without it can come to a bursting of stitches.
- the object is achieved with a flat knitting machine of the type mentioned above, which is characterized in that the hold-down plate has a flat hold-down surface, which is in the closed position of the hold-down below the bottom of the associated needle, the hold-down surface and through the bottom of the Needle defined plane an angle of at most 10 ° between them.
- the hold-down of the flat knitting machine according to the invention dive in its closed position to below the needle bottom and thus also cause a reliable retention of the held in the needle stitch.
- the hold-down surface is flat and not angled hook-shaped and also includes the active surface with the plane defined by the bottom of the needle angle of 10 ° highest, the force exerted on the mesh force is significantly lower than the known hold-down plates. Also in the production of knitted pieces of thin and / or delicate yarns thus the risk of bursting a stitch can be significantly reduced.
- the hold-down surface may lie in the open position of the board in a plane which is tangent to the hook interior of the associated needle or above the hook interior.
- the flat knitting machine according to the invention touched the knitting thread, which is in the needle hook, does not hold the hold-down plate when it is in its open position. The stitch formation can thus be undisturbed and without injuries to the knitting thread.
- hold-down plate between its closed position and its open position is adjustable by pivoting.
- the hold-down boards must then be mounted only pivotable and not be displaced in addition to performing a translational movement.
- the blanks of the flat knitting machine according to the invention can also be adjusted by means of control cams arranged on the carriage of the flat knitting machine.
- This control is cost-effective and allows in a structurally simple manner, the vote of the movement of the hold-down plates on the movement of the needles, which are also acted upon by arranged on the carriage of the flat knitting machine cams.
- the hold-down surface of the hold-down plate merges to form a rounded tip in an end face of the hold-down, wherein the tip in the closed position of the hold-down plate has a distance to the median plane between the opposing needle beds of at least 0.1 mm.
- the rounding of the tip of the hold-down board and the maintenance of a minimum distance to the center plane of the flat knitting machine ensures that there can be no collision of opposing hold-down boards of the two needle beds.
- the flat knitting machine according to the invention can also be equipped with stitch patterns which are rigidly arranged on the needle beds and which allow the uniform formation of stitches.
- stitch patterns which are rigidly arranged on the needle beds and which allow the uniform formation of stitches.
- a take-off wire can be guided in a manner known per se through all stitch patterns.
- FIG. 1 shows the stitch forming area of a flat knitting machine arranged between the two opposing needle beds 4, 4 '.
- needle beds 4, 4 'needles 3 are mounted longitudinally displaceable, so that they can perform movements in the directions of the double arrows NB, NB'.
- the needles 3 are in their basic position.
- rigid stitch patterns 2 and a tee wire 5 are stored.
- the tee wire 5 is fixed in the stitch patterns 2.
- Fig. 2 shows the stitch formation area of the flat knitting machine with the hold-down boards 1 in its open position.
- the hold-down boards 1 are detected by control cams, not shown, at their ends 14 and pivoted in the direction of the arrows KO, KO 'in the open position.
- the opening position of the hold-down plate is mechanically limited by the abutment surface 15 of the hold-down plate, which abuts against the boundary surface 41, 41 'of the needle bed 4, 4'.
- the detailed representation of the Fig. 3 shows in an enlarged view of the stitch formation region of the needle bed 4 'from Fig. 1 , From this representation it can be seen that the hold-down plate 1 in its closed position with its newly designed hold-down surface 11 a section 101 of a mesh 100 applied and thereby holds down.
- the hold-down surface 11 of the hold-down plate 1 is flat in the entire area above the tee wire 5. It falls short of that Bottom of the needle and forms with the plane NG ', which is defined by the underside of the needle, a maximum angle of 10 °.
- the hold-down surface 11 merges with the formation of a rounded tip into an end face 12 of the hold-down plate 1.
- the end face 12 extends at a distance of at least 0.2 mm parallel to a plane NG which is defined by the underside of the opposing needle, which is not shown here.
- the rounded tip 13 of the hold-down plate 1 has a distance of at least 0.1 mm to the center plane M of the flat knitting machine.
- Fig. 4 is one of the Fig. 3 corresponding enlarged detailed representation of the stitch formation area of the needle bed 4 ' Fig. 2 ,
- the hold-down board 1 is in its open position.
- the straight hold-down surface 11 of the hold-down plate 1 extends tangentially to the inner space 35 of the needle hook 31 at the top thereof and is thus at a considerable distance above the knitting thread of the loop 100.
- the possibility that the tip 13 of the hold-down plate 1 in the knitting thread of the stitch 100 can prick, practically impossible.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Description
Die Erfindung betrifft eine Flachstrickmaschine mit sich gegenüber liegenden Nadelbetten und darin längs verschiebbar angeordneten Nadeln, wobei jeder Nadel eine Niederhalteplatine zugeordnet ist, die zwischen einer Schließstellung und einer Öffnungsstellung verstellbar angeordnet ist.The invention relates to a flat knitting machine with opposing needle beds and longitudinally slidably disposed needles, each needle is associated with a hold-down plate, which is arranged adjustable between a closed position and an open position.
Der Einsatz von Niederhalteplatinen bei Flachstrickmaschinen ist seit längerem bekannt. So beschreibt beispielsweise die
Die
Die beiden bekannten Niederhalteplatinen lassen sich außerdem aufgrund ihrer Lagerung dicht am Maschenbildungsbereich des Nadelbetts nur in eine relativ begrenzte Öffnungsposition verschwenken. In der Öffnungsposition befinden sich die Niederhalteflächen der Platinen noch innerhalb des Hakeninnenraums ihrer zugehörigen Nadel. Insbesondere bei einer hakenförmigen Ausbildung der Spitze der Niederhalteplatinen kann es daher in Einzelfällen dazu kommen, dass die Spitze der Niederhalteplatine in Teile des Strickfadens einsticht, der sich im Haken der eine Rückzugsbewegung ausführenden Stricknadel befindet und mit dem die neue Masche gebildet werden soll. Bei einer weiteren Rückzugsbewegung der Nadel reißt der Teil des Strickfadens auf, der von der Niederhalteplatine erfasst wurde. Dies ist an der Oberfläche des Gestricks sichtbar und führt zu einer Wertminderung des Gestrickstücks.The two known hold-down plates can also be pivoted due to their storage close to the stitch formation area of the needle bed only in a relatively limited opening position. In the opening position, the hold-down surfaces of the boards are still within the hook interior of their associated needle. In particular, in the case of a hook-shaped design of the tip of the hold-down plates, it may therefore happen in individual cases that the tip of the hold-down plate pierces parts of the knitting thread, which is in the hook of a withdrawal movement exporting knitting needle and with which the new stitch is to be formed. Another retraction movement of the needle ruptures the portion of the knitting thread that has been caught by the hold-down plate. This is visible on the surface of the knitted fabric and leads to an impairment of the knitted piece.
Der Erfindung liegt die Aufgabe zugrunde, eine Flachstrickmaschine bereitzustellen, deren Niederhalteplatinen die Verarbeitung von Garnen erlauben, ohne dass es zu einem Platzen von Maschen kommen kann. Die Aufgabe wird mit einer Flachstrickmaschine der eingangs genannten Art gelöst, die erfindungsgemäß dadurch gekennzeichnet ist, dass die Niederhalteplatine eine ebene Niederhaltefläche aufweist, die sich in der Schließstellung der Niederhalteplatine unterhalb der Unterseite der zugehörigen Nadel befindet, wobei die Niederhaltefläche und die durch die Unterseite der Nadel definierte Ebene einen Winkel von höchstens 10° zwischen sich einschließen.The invention has for its object to provide a flat knitting machine, the hold-down boards allow the processing of yarns without it can come to a bursting of stitches. The object is achieved with a flat knitting machine of the type mentioned above, which is characterized in that the hold-down plate has a flat hold-down surface, which is in the closed position of the hold-down below the bottom of the associated needle, the hold-down surface and through the bottom of the Needle defined plane an angle of at most 10 ° between them.
Die Niederhalteplatinen der erfindungsgemäßen Flachstrickmaschine tauchen in ihrer Schließstellung bis unterhalb der Nadelunterseite und bewirken somit ebenfalls ein zuverlässiges Zurückhalten der in der Nadel gehaltenen Masche. Da die Niederhaltefläche jedoch eben gestaltet und nicht hakenförmig abgewinkelt ist und zudem die Wirkfläche mit der durch die Nadelunterseite definierten Ebene einen Winkel von höchsten 10° einschließt, ist die beim Niederhalten auf die Masche ausgeübte Kraft deutlich geringer als bei den gekannten Niederhalteplatinen. Auch bei der Herstellung von Gestrickstücken aus dünnen und/oder empfindlichen Garnen kann somit die Gefahr des Platzens einer Masche erheblich reduziert werden. Durch die ebene Ausgestaltung der Niederhaltefläche, das heißt durch den Verzicht auf eine hakenförmige Gestaltung der Spitze der Niederhalteplatine, sind außerdem Verletzungen des Strickfadens in der Öffnungsposition der Niederhalteplatine wesentlich unwahrscheinlicher als bei den bekannten Niederhalteplatinen.The hold-down of the flat knitting machine according to the invention dive in its closed position to below the needle bottom and thus also cause a reliable retention of the held in the needle stitch. However, since the hold-down surface is flat and not angled hook-shaped and also includes the active surface with the plane defined by the bottom of the needle angle of 10 ° highest, the force exerted on the mesh force is significantly lower than the known hold-down plates. Also in the production of knitted pieces of thin and / or delicate yarns thus the risk of bursting a stitch can be significantly reduced. Due to the flat configuration of the hold-down surface, that is, by dispensing with a hook-shaped design of the tip of the hold-down, also injuries to the knitting yarn in the opening position of the hold-down board are much less likely than in the known hold-down boards.
Sollen diese Verletzungen des Strickfadens durch die Spitze der Niederhalteplatine in der Öffnungsposition vollkommen ausgeschlossen werden, so kann die Niederhaltefläche in der Öffnungsstellung der Platine in einer Ebene liegen, die tangential zum Hakeninnenraum der zugehörigen Nadel oder oberhalb des Hakeninnenraums verläuft. Bei dieser Ausgestaltung der erfindungsgemäßen Flachstrickmaschine berührt der Strickfaden, der sich im Nadelhaken befindet, die Niederhalteplatine nicht, wenn sich diese in ihrer Öffnungsstellung befindet. Die Maschenbildung kann somit ungestört und ohne Verletzungen des Strickfadens erfolgen.If these injuries of the knitting thread are completely excluded by the tip of the hold-down plate in the open position, the hold-down surface may lie in the open position of the board in a plane which is tangent to the hook interior of the associated needle or above the hook interior. In this embodiment of the flat knitting machine according to the invention touched the knitting thread, which is in the needle hook, does not hold the hold-down plate when it is in its open position. The stitch formation can thus be undisturbed and without injuries to the knitting thread.
Weitere Vorteile ergeben sich, wenn die Niederhalteplatine zwischen ihrer Schließstellung und ihrer Öffnungsstellung durch Verschwenken verstellbar ist. Die Niederhalteplatinen müssen dann nur schwenkbar gelagert und nicht zusätzlich zur Durchführung einer translatorischen Bewegung verschiebbar sein.Further advantages arise when the hold-down plate between its closed position and its open position is adjustable by pivoting. The hold-down boards must then be mounted only pivotable and not be displaced in addition to performing a translational movement.
Zweckmäßigerweise können auch die Platinen der erfindungsgemäßen Flachstrickmaschine mittels am Schlitten der Flachstrickmaschine angeordneten Steuerkurven verstellbar sein. Diese Ansteuerung ist kostengünstig und ermöglicht auf konstruktiv einfache Weise die Abstimmung der Bewegung der Niederhalteplatinen auf die Bewegung der Nadeln, die ebenfalls von am Schlitten der Flachstrickmaschine angeordneten Steuerkurven beaufschlagt werden.Expediently, the blanks of the flat knitting machine according to the invention can also be adjusted by means of control cams arranged on the carriage of the flat knitting machine. This control is cost-effective and allows in a structurally simple manner, the vote of the movement of the hold-down plates on the movement of the needles, which are also acted upon by arranged on the carriage of the flat knitting machine cams.
Bei einer bevorzugten Ausgestaltung der Flachstrickmaschine geht die Niederhaltefläche der Niederhalteplatine unter Ausbildung einer abgerundeten Spitze in eine Stirnfläche der Niederhalteplatine über, wobei die Spitze in der Schließstellung der Niederhalteplatine einen Abstand zur Mittelebene zwischen den gegenüberliegenden Nadelbetten von mindestens 0,1 mm aufweist. Das Abrunden der Spitze der Niederhalteplatine sowie das Einhalten eines Minimalabstands zur Mittelebene der Flachstrickmaschine sorgt dafür, dass es zu keinen Kollisionen gegenüberliegender Niederhalteplatinen der beiden Nadelbetten kommen kann.In a preferred embodiment of the flat knitting machine, the hold-down surface of the hold-down plate merges to form a rounded tip in an end face of the hold-down, wherein the tip in the closed position of the hold-down plate has a distance to the median plane between the opposing needle beds of at least 0.1 mm. The rounding of the tip of the hold-down board and the maintenance of a minimum distance to the center plane of the flat knitting machine ensures that there can be no collision of opposing hold-down boards of the two needle beds.
Dabei ist es zudem von Vorteil, wenn die Stirnfläche der Niederhalteplatine in der Schließstellung der Niederhalteplatine parallel zur Unterseite der Nadel des gegenüberliegenden Nadelbetts und in einem Abstand von mindestens 0,2 mm unterhalb der durch die Unterseite der Nadel definierten Ebene verläuft. Bei dieser Ausgestaltung ist sichergestellt, dass die Niederhalteplatine auch in ihrer Schließstellung die Bewegung der Nadel des gegenüberliegenden Nadelbetts nicht behindert.It is also advantageous if the end face of the hold-down plate in the closed position of the hold-down plate parallel to the bottom of the needle of the opposite needle bed and at a distance of at least 0.2 mm below the plane defined by the bottom of the needle level. In this embodiment, it is ensured that the hold-down plate does not hinder the movement of the needle of the opposing needle bed even in its closed position.
Die erfindungsgemäße Flachstrickmaschine kann außerdem mit Maschenbildern ausgerüstet sein, die starr an den Nadelbetten angeordnet sind und die das gleichmäßige Bilden von Maschen ermöglichen. Zur Erleichterung des Abschlagens der Maschen kann in an sich bekannter Weise durch sämtliche Maschenbilder ein Abschlagsdraht geführt sein.The flat knitting machine according to the invention can also be equipped with stitch patterns which are rigidly arranged on the needle beds and which allow the uniform formation of stitches. To facilitate the knocking off of the stitches, a take-off wire can be guided in a manner known per se through all stitch patterns.
Nachfolgend wird anhand der Zeichnung eine bevorzugte Ausgestaltung des Maschenbildungsbereichs einer erfindungsgemäßen Flachstrickmaschine näher beschrieben.Hereinafter, a preferred embodiment of the stitch formation region of a flat knitting machine according to the invention will be described in more detail with reference to the drawing.
Im Einzelnen zeigen:
- Fig. 1
- einen Querschnitt durch den Maschenbildungsbereich einer Flachstrickmaschine mit Niederhalteplatinen in der Schließstellung;
- Fig. 2
- einen der
Fig. 1 entsprechenden Querschnitt mit den Niederhalteplatinen in der Öffnungsstellung; - Fig. 3
- eine vergrößerte Detaildarstellung der
Fig. 1 ; - Fig. 4
- eine vergrößerte Detaildarstellung der
Fig. 2 .
- Fig. 1
- a cross section through the stitch formation region of a flat knitting machine with hold-down boards in the closed position;
- Fig. 2
- one of the
Fig. 1 corresponding cross-section with the hold-down boards in the open position; - Fig. 3
- an enlarged detail of the
Fig. 1 ; - Fig. 4
- an enlarged detail of the
Fig. 2 ,
Die Querschnittsdarstellung gemäß
Im in
Die Detaildarstellung der
Durch die Ausgestaltung und die Lage der Niederhaltefläche 11 unterhalb der Ebene NG' wird auf die Masche 100 die kleinstmögliche Niederhaltekraft ausgeübt und somit auch die kleinstmögliche Spannung in der Masche 100 erzeugt.Due to the configuration and the position of the hold-
Claims (8)
- Flat bed knitting machine with opposing needle beds (4, 4') incorporating longitudinally displaceable needles (3), whereby a hold-down sinker (1) is allocated to each needle (3), wherein said sinker is arranged to move between a closed position and an open position, characterised in that the hold-down sinker (1) comprises a flat hold-down face (11) which is located under the underside of the associated needle (3) in the closed position of the hold-down sinker (1), whereby the hold-down face (11) and the plane (NG') defined by the underside of the needle (3) enclose an angle of 10° at the most between them.
- Flat bed knitting machine in accordance with claim 1, characterised in that the holding-down face (11), in the open position of the sinker (1), lies in a plane which runs tangentially to the hook's internal space (35) of the associated needle (3) or over the hook's internal space (35).
- Flat bed knitting machine in accordance with claim 1 or 2, characterised in that the hold-down sinker (1) is displaceable between its closed position and its open position by pivoting.
- Flat bed knitting machine in accordance with one of the previous claims, characterised in that the hold-down sinker (1) is displaceable by means of control curves arranged on the carriage of the flat bed knitting machine.
- Flat bed knitting machine in accordance with one of the previous claims, characterised in that the hold-down face (11) of the hold-down sinker (1) merges into a front face (12) of the hold-down sinker (1) to form a rounded tip (13), whereby the tip (13), in the closed position of the hold-down sinker (1), is at least 0.1 mm from the centre plane (M) between the opposing needle beds (4, 4').
- Flat bed knitting machine in accordance with claim 5, characterised in that the front face (12), in the closed position of the hold-down sinker (1), runs parallel to the underside of the needle (3) of the opposing needle bed (4) and forms a gap of at least 0.2 mm below the plane (NG) defined by the underside of the opposing needle (3).
- Flat bed knitting machine in accordance with one of the previous claims, characterised in that stitch formers (2) also are arranged rigidly on the needle beds (4, 4').
- Flat bed knitting machine in accordance with claim 7, characterised in that a casting-off wire (5) is driven by all stitch formers (2).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20090006565 EP2251469B1 (en) | 2009-05-15 | 2009-05-15 | Flat knitting machine with sinkers |
CN 201010184176 CN101886309B (en) | 2009-05-15 | 2010-05-14 | Flat knitting machine with holding sinker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20090006565 EP2251469B1 (en) | 2009-05-15 | 2009-05-15 | Flat knitting machine with sinkers |
Publications (2)
Publication Number | Publication Date |
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EP2251469A1 EP2251469A1 (en) | 2010-11-17 |
EP2251469B1 true EP2251469B1 (en) | 2013-07-17 |
Family
ID=42060861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20090006565 Active EP2251469B1 (en) | 2009-05-15 | 2009-05-15 | Flat knitting machine with sinkers |
Country Status (2)
Country | Link |
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EP (1) | EP2251469B1 (en) |
CN (1) | CN101886309B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106894152B (en) * | 2017-03-31 | 2018-11-23 | 浙江丰帆数控机械有限公司 | A kind of flat machine |
CN109056174B (en) * | 2018-08-30 | 2020-04-28 | 浙江丰帆数控机械有限公司 | Flat knitting machine |
CN109706612A (en) * | 2019-01-08 | 2019-05-03 | 福建信亿机械科技有限公司 | A kind of double rib warp loom |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3935763A1 (en) * | 1989-10-27 | 1991-05-02 | Stoll & Co H | FLAT KNITTING MACHINE |
DE19807695A1 (en) * | 1998-02-24 | 1999-08-26 | Stoll & Co H | Process for producing a knitted fabric on a flat knitting machine |
DE50208648D1 (en) * | 2002-03-23 | 2006-12-21 | Stoll & Co H | Flat knitting machine with adjustable sinkers |
CN1274894C (en) * | 2003-11-14 | 2006-09-13 | 冯加林 | Thread-clamping and thread-loosing apparatus for straight-bar machines |
CN2665161Y (en) * | 2003-11-14 | 2004-12-22 | 冯加林 | Sinker device for straight-bar machines |
CN2832852Y (en) * | 2005-05-11 | 2006-11-01 | 孙平范 | Sinker mechanism of flat knitting machine |
EP2034064B1 (en) * | 2007-09-06 | 2011-08-31 | H. Stoll GmbH & Co. KG | Needle bed for a flat knitting machine |
-
2009
- 2009-05-15 EP EP20090006565 patent/EP2251469B1/en active Active
-
2010
- 2010-05-14 CN CN 201010184176 patent/CN101886309B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2251469A1 (en) | 2010-11-17 |
CN101886309A (en) | 2010-11-17 |
CN101886309B (en) | 2012-06-13 |
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