EP1731651B1 - Aiguille à clapet pour des machines textiles - Google Patents

Aiguille à clapet pour des machines textiles Download PDF

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Publication number
EP1731651B1
EP1731651B1 EP05012412A EP05012412A EP1731651B1 EP 1731651 B1 EP1731651 B1 EP 1731651B1 EP 05012412 A EP05012412 A EP 05012412A EP 05012412 A EP05012412 A EP 05012412A EP 1731651 B1 EP1731651 B1 EP 1731651B1
Authority
EP
European Patent Office
Prior art keywords
needle
latch
tongue
sawslot
slot
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
EP05012412A
Other languages
German (de)
English (en)
Other versions
EP1731651A1 (fr
Inventor
Uwe Hennig
Eckhard Fehrenbacher
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.)
Groz Beckert KG
Original Assignee
Groz Beckert 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 Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP05012412A priority Critical patent/EP1731651B1/fr
Priority to DE502005009453T priority patent/DE502005009453D1/de
Priority to JP2006151649A priority patent/JP4370311B2/ja
Priority to CN2006100945020A priority patent/CN1876925B/zh
Priority to KR1020060051830A priority patent/KR100786986B1/ko
Priority to US11/449,663 priority patent/US7272958B2/en
Publication of EP1731651A1 publication Critical patent/EP1731651A1/fr
Application granted granted Critical
Publication of EP1731651B1 publication Critical patent/EP1731651B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles

Definitions

  • the invention relates to a latch needle, which is suitable for textile machines, such as knitting machines or knitting machines.
  • Tongue needles are known from the prior art for the production of knitwear, which have an elongate shaft with a hook attached to the end and a tongue pivotally mounted in a longitudinal slot and with its end in a position touching the hook (closed position). and which can be pivoted away from the hook to release the hook.
  • Such a needle discloses, for example, the DE OS 27 14 607 .
  • the latch needle has a second longitudinal slot following a first longitudinal slot, with an opening in the direction of the needle back. In this case, it is positioned below the tongue rest and has a depth which is greater than half the needle shank height.
  • the execution of a latch needle according to DE OS 27 14 607 Known in professional circles as Doppelschlitznadel, increases the elasticity of the sheep cheeks and thus has a dampening effect.
  • the prior art also discloses in the form of DE 43 34 051 C1 a needle having a tongue slot for receiving the tongue, which extends from the needle top.
  • a needle having a tongue slot for receiving the tongue, which extends from the needle top.
  • the shaft longitudinal direction of the tongue slot is bounded substantially parallel flankig.
  • curved end surfaces are provided, so that the length of the tongue slot measured with respect to the shaft longitudinal direction, seen from the needle top side, decreases inwardly ie in the depth of the slot.
  • the tongue slot On its underside, the tongue slot is provided with a breakthrough to the needle back.
  • the breakthrough is limited parallelepiped and has both at its hook-side end and on the opposite side in each case a small, preferably flat, oriented transversely to the shaft longitudinal direction end surface.
  • the leading to the needle back breakthrough can be used to create the knitting process accumulating dirt that has entered the tongue slot out of this.
  • a latch needle with a tongue slot known that widens like a funnel to the back of the needle.
  • the tongue slot is limited with respect to the shaft longitudinal direction of two cheeks whose inner surfaces together form an acute angle.
  • the tongue slot length increases in the longitudinal direction of the shaft towards the needle back.
  • the hook-side end of the tongue slot is formed by a slightly curved inclined surface, which forms an acute angle with the shaft longitudinal direction.
  • latch needles that have a tongue spring to support selected lobes of the tongue.
  • a needle is for example from the DE-AS 1113537 known.
  • the hook adjacent to the hook and the opposite end surface of the tongue slot is inclined obliquely upwards, so that the moving tongue can build a dirt pad on these surfaces. The passage blocked by the tongue to the back of the needle complicates the self-cleaning and the dirt discharge.
  • the invention is applicable to two categories of latch needles, namely tongue needles with tongue springs and tongue needles without tongue springs. If no tongue spring is provided, at least the hook-side of, based on the shaft longitudinal direction end surfaces of the tongue slot is oriented approximately at right angles to the shaft longitudinal direction. The relevant surface is thus oriented so that the direction of movement of the tongue is directed shortly before reaching its end position approximately parallel to the respective end face. As a result, dirt moved by the tongue is not deposited on the end surface but pushed past it. This is for the hook-side, the tongue slot limiting area of importance to allow permanent safe closing of the tongue.
  • the distance of the end face of the tongue slot from the hook of the latch needle is at least as large or larger, depending on the desired elasticity of the sheep cheeks of the latch needle, such as the distance of the end of the tongue spoon in reserve from the hook.
  • the latch needle 1 has a needle body 2 with an elongate shaft 3, which ends in a hook 4 with a hook tip 5. Adjacent to the hook, a tongue 6 is arranged, which is pivotally mounted by means of a tongue bearing 7. By swinging back and forth of the tongue 6, this can touch the hook tip 5 with her spoon 8 and thus close the hook 4 or open the hook 4, by getting into reserve.
  • the latch needle 1 also has at least one upstanding from the needle body 2 foot 9.
  • a cap spring 10 may be provided on the needle body 2 and / or the shaft 3. This is, for example, attached to one of the flat side surfaces of the latch needle 1 and serves to transfer stitches received by the shaft 3, i. the transfer of these stitches to other needles.
  • FIG. 2 The tongue 6 projects with its tongue bearing 7 associated end in a tongue slot 11 which is incorporated as an elongated slot in the shaft 3 and extending from the needle back 12 of the shaft 3 to the needle top 13.
  • the needle back 12 is a narrow, preferably substantially flat surface with which the latch needle 1 slides to the bottom of its associated needle channel of a needle bed of a knitting machine.
  • the needle top 13 is the opposite surface from which the tongue 6 protrudes.
  • Both sides of the tongue slot are bounded by cheeks 14, 15. In FIG. 2 is the uppermost cheek 15 ( FIG. 1 ) cut away to thereby expose the cheek 14 lying behind the tongue 6 from the view of the beholder.
  • a through a tongue hole 16 cross pin 17 is visible, which forms the tongue bearing 7.
  • the pin 17 is preferably oriented at right angles to the cheeks 14, 15, which limit the tongue slot 11 with their preferably flat and oriented at right angles to each other, facing each other inner sides.
  • the parallel to a shaft longitudinal direction L and perpendicular to the cheeks 14, 15, ie in FIG. 2 perpendicular to the plane of the longitudinal section of the tongue slot 11 is therefore preferably rectangular at any point.
  • end surfaces 18, 19 On both sides of the tongue bearing 7 of the tongue slot 11 is limited by end surfaces 18, 19.
  • the end face 18 is arranged between the tongue bearing 7 and the hook 4.
  • the end face 19 is disposed at the opposite end of the tongue slot and faces the end face 18.
  • the end face 18 is subdivided into an arched surface 21 and a preferably smaller surface 22 at an angle therewith, which borders on the needle top side 13. While the outgoing from the needle back 12 surface 21 is preferably circular arc, ie cylindrically curved is and with the needle longitudinal direction L includes an acute angle whose tip points in the direction of the hook 4, the surface 22 is oriented substantially or even in the context of manufacturing accuracy exactly perpendicular to the shaft longitudinal direction L.
  • the surface 22 is preferably positioned so that the tongue 6 rests with its inner side 23 at the upper, needle top end of the surface 22 when it is in the closed position I.
  • the tongue 6 can also be at a small distance to this.
  • the end face 19 is subdivided into an arcuate, preferably cylindrically curved, larger surface 24 adjoining the needle back 12 and to a preferably flat surface 25 within the scope of the machining accuracy, which adjoins the needle top side 13.
  • the surface 25 is preferably oriented parallel to the surface 22 and thus aligned within the manufacturing accuracy-preferably perpendicular to the shaft longitudinal direction L.
  • the surface 24 includes with the shaft longitudinal direction L, however, an acute angle, the tip of the hook 4 of the needle 1 points away.
  • the tongue slot 11 thus has on the needle top side 13 a length to be measured in the longitudinal direction L of the shaft, which is smaller than the length to be measured on the needle back 12.
  • the surfaces diverge 21 and 24.
  • the tongue slot 11 widens toward the needle back 12, at least with respect to its longitudinal direction. In the transverse direction, however, it preferably does not expand, because the cheeks 14, 15 are oriented parallel to each other as mentioned.
  • the tongue needle 1 described so far is subject to reduced pollution and has the best self-cleaning effect.
  • the tongue 6 is continuously moved between the closed position I and the reserve II back and forth. In this case, any, on the needle top 13 fitting dirt on the surfaces 22, 25 over by the flared tongue slot 11 is moved to the needle back 12 out, where he can freely emerge.
  • FIG. 2b illustrates a modified embodiment of the latch needle 1 similar to that in FIG. 2 described with increased elasticity of the sheep cheeks 14, 15.
  • the latch needle 1 according to FIG. 2 has the latch needle 1 after the FIG. 2b a flat needle back 12. This extends in a plane over the entire shaft length 3.
  • the needle back 12 has a planar shape and additionally has a raised hook position, as known from the prior art.
  • a latch needle 1 according to FIG. 2b a continuous tongue slot 11 extending from an area between the hook tip 5 and the tongue bearing 7 to the end or beyond of the tongue spoon 8 when it is in the reserve II.
  • the distance A from the hook tip 5 to the surface 25 of the end face 19 of the tongue slot 11 is greater than or equal to the distance B from the hook tip 5 to the end of the tongue spoon 8.
  • the support of the tongue spoon is then ensured exclusively by a shape impression 37 , This creates a particularly flexible latch needle.
  • the shape impression 37 is formed only on one or on both the cheeks delimiting the shaft. He stands in front of the respective cheek in the tongue slot 11 and narrows or obstructs it. He has an adapted in the form of the back of the tongue spoon contact surface.
  • FIGS. 3 and 4 illustrate a further modified embodiment of the latch needle 1, which also manages without tongue spring.
  • latch needle 1 As far as structural, functional or structural equality to the above-described latch needle 1 after FIG. 1 is present, reference is made to the previous description based on the same reference numerals. This therefore applies without restriction, with the exception of the following deviations.
  • the surface 22 is rectangular or, as shown, may be inclined at an obtuse angle to the shank longitudinal direction L.
  • the normal vector N of the surface 22 encloses an acute angle with the shank longitudinal direction L.
  • the normal vector N points into the tongue slot 11, ie away from the needle top 13.
  • the surface 22 is according to the invention oriented so that in the closed position I with the inside 23 of the tongue 6 approximately or exactly a right Includes angle. The tongue 6 can then rest on the surface 22 delimiting the upper edge or stand at a distance therefrom.
  • the opposite end of the tongue slot 11 is otherwise designed.
  • the surface 24 extends from the needle back 12 only over a short distance into the tongue slot 11, which is preferably shorter than half the shaft thickness.
  • the surface 24 meets there on a recess 27 incorporated into the shaft 3 from the needle top side 13, which cuts the tongue slot 11.
  • the recess 27 preferably has a circular curved, ie partially cylindrical bottom 28 and forms together with the shape impression 37 for the reserve II of the tongue 6 a receptacle for the spoon 8 of the tongue 6.
  • the spoon 8, which is slightly wider than the rest of the tongue 6, is partially taken in reserve of the recess 27 and the shape of impression 37.
  • the latch needle 1 is still superior to conventional latch needles.
  • the accumulated in the hook interior dust and dirt is done by means of the tongue 6 and through the tongue slot 11 to the needle back 12 and thus out of the tongue slot 11 out.
  • the tongue slot 11 is fully closed to the hook 4 when the tongue 6 is in the closed position, the dirt entry into the tongue slot 11 is also reduced.
  • FIGS. 5 to 8 illustrate modified embodiments of the latch needle 1 with tongue spring 29. This is arranged in each case in the tongue slot 11.
  • the embodiment of the latch needle 1 according to the FIGS. 5 and 6 is characterized by a relatively short tongue slot 11. Because of the general configuration of the latch needle 1 is the description of the embodiment of the latch needle 1 after FIG. 2 which applies accordingly. In addition, the following applies:
  • the end surface 18 is provided with a recess 30 which forms a bearing pocket or a bearing seat for the tongue spring 29.
  • This is rod-shaped and substantially straight. It may have a round, oval or flattened cross-section.
  • the tongue spring forms a spiral spring, which lies with its end 31 in the recess 30.
  • the recess 30 is open towards the needle back 12, but somewhat narrowed, so that the end 31 is held captive in the recess 30.
  • the opposite end face 19 is also provided with a recess 32 in which one end 33 of the tongue spring 29 is located. Again prevents a needle-side constriction 38 of the otherwise open recess 32 falling out of the end 33 of the tongue spring 29 so that it is held captive in the tongue slot 11.
  • the end surface 19 is divided into the surfaces 25, 24, wherein the surface 25 may preferably be formed as a flat surface but need not. It is, as described above, preferably aligned parallel to the surface 22.
  • the surface 24 may, as described above, formed curved and be arranged obliquely to the shaft longitudinal direction L or at right angles to this.
  • the tongue 6 abuts in the closed position I at the needle top end of the surface 22. This causes the displacement of dirt deposited on the surface 22 in the direction of the tongue spring 29 and past it out of the tongue slot 11. It is advantageous that the tongue spring 29 fills only a portion of the width of the tongue slot 11.
  • the tongue spring may serve to ensure various preferred positions of the tongue 6.
  • located in the tongue slot 11 end of the tongue 6 may be provided with flats 34, 35 which are associated with the selected tongue positions and abut in each of these on the tongue spring 29. This is biased at the end of the tongue 6 at.
  • the arrangement is preferably made such that the preferred positions set by the tongue spring 29 are at least slightly spaced from the closed position I as well as from the reserve II.
  • the embodiment of the latch needle 1 according to the FIG. 6b is largely consistent with the embodiment of the latch needle 1 according to FIGS. 5 and 6 they have the same properties like a latch needle 1 according to FIG. 2b having. Based on the same reference numerals, therefore, the above description applies accordingly. In addition, the following applies:
  • the distance A from the hook tip 5 to the surface 25 of the end face 19 of the tongue slot 11 is greater than or equal to the distance B from the hook tip 5 to the end of the tongue spoon 8.
  • the support of the tongue spoon is then ensured exclusively by the impression 37. This creates a particularly flexible latch needle.
  • the tongue slot 11 has a considerably increased length compared to the embodiment described above.
  • the tongue 6 can therefore be guided in its reserve II much closer to the shaft 3 zoom than in the embodiment described above.
  • the tongue spring 29 is in turn so long that it bridges the tongue slot 11 in its entire length.
  • the flats 34, 35 are arranged so that they both keep the tongue 6 slightly away from their reserve II or closed position I in a stable position.
  • the tongue spring 29 is provided, for example, at one of the flat 34 spaced point 36 in addition with a kink, which comes into contact with the back 26, just before the spoon 8 comes to the impression 37 to the design ..
  • a novel latch needle has a latching slot 11 which has both on its front end face 18 and on its rear end face 19 a respective facet or face 22, 25, which are preferably oriented parallel to each other and at right angles to the longitudinal direction L of the shank.
  • the surfaces are thereby aligned so that the opening or closing tongue 6 pushes any dirt past the surfaces concerned through the tongue slot 11 and prevents the accumulation and compaction of dirt pads on said surfaces.
  • the tongue slot 11 thus does not have any surface area, in particular in the region of its end faces 18, 19, which faces the opening or closing tongue 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (11)

  1. Aiguille à clapet (1) pour machines textiles,
    comportant un fût d'aiguille (3) qui présente un côté supérieur d'aiguille (13) ainsi qu'un dos d'aiguille (12) et dans lequel est ménagée une fente de clapet (11),
    comportant un clapet (6) qui est monté à pivotement dans la fente de clapet (11) entre une position de fermeture (I) et une position de retrait (II) :
    - la longueur de la fente de clapet (11) à mesurer dans la direction longitudinale (L) du fût diminuant vers l'intérieur à partir du dos d'aiguille (12) et
    - la fente de clapet (11) étant limitée dans la direction longitudinale (L) du fût par une surface d'extrémité (18) située entre le palier (7) de clapet et le crochet (4), caractérisé en ce que la surface d'extrémité (18) est subdivisée en une surface plane (22) située à l'opposé du côté supérieur (13) de l'aiguille qui se raccorde au côté supérieur (13) de l'aiguille et qui est orientée essentiellement perpendiculairement à la direction longitudinale (L) du fût et en une surface courbe (21) qui se raccorde au dos (12) d'aiguille.
  2. Aiguille à clapet selon la revendication 1, caractérisée en ce que l'écart (A) de la surface (25) par rapport à la pointe (5) d'aiguille est au moins égal à l'écart (B) entre la pointe (5) d'aiguille et l'extrémité de la palette de clapet (8) lorsque le clapet se trouve en position de retrait.
  3. Aiguille à clapet selon la revendication 1, caractérisée en ce que l'écart (A) de la surface (25) par rapport à la pointe (5) d'aiguille, est supérieur à l'écart (B) entre la pointe (5) d'aiguille et l'extrémité de la palette (8) de clapet lorsque le clapet se trouve en position de retrait.
  4. Aiguille à clapet selon la revendication 1, caractérisée en ce que la fente de clapet (11) est limitée dans la direction longitudinale (L) du fût, en se raccordant au côté supérieur (13) de l'aiguille, par deux surfaces (22, 25) parallèles l'une à l'autre.
  5. Aiguille à clapet selon la revendication 1, caractérisée en ce que la fente de clapet (11) donne librement passage vers le dos (12) d'aiguille.
  6. Aiguille à clapet selon la revendication 1, caractérisée en ce qu'un ressort (29) de clapet est disposé dans la fente de clapet (11).
  7. Aiguille à clapet selon la revendication 4, caractérisée en ce que les surfaces (21, 24) qui se raccordent aux surfaces (22, 25) de forme plane ont toutes deux une forme courbe.
  8. Aiguille à clapet selon la revendication 1, caractérisée en ce que la fente de clapet (11) est ouverte en direction du dos (12) d'aiguille.
  9. Aiguille à clapet selon la revendication 1, caractérisée en ce que le clapet (6) est en contact, au moins en position de fermeture (I) ou au moins en position de retrait (II) avec la surface (22, 25) qui est adjacente au côté supérieur (13) de l'aiguille, et qui est orientée à angle droit par rapport à la direction longitudinale (L) du fût.
  10. Aiguille à clapet selon la revendication 1, caractérisée en ce que la fente de clapet (11) est limitée par des flancs parallèles.
  11. Aiguille à clapet selon la revendication 1, caractérisée en ce qu'une empreinte de forme (37) servant de butée pour le clapet est disposée dans la fente de clapet (11) sous forme d'une zone de paroi de la fente de clapet déformée plastiquement.
EP05012412A 2005-06-09 2005-06-09 Aiguille à clapet pour des machines textiles Active EP1731651B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP05012412A EP1731651B1 (fr) 2005-06-09 2005-06-09 Aiguille à clapet pour des machines textiles
DE502005009453T DE502005009453D1 (de) 2005-06-09 2005-06-09 Zungennadel für Textilmaschinen
JP2006151649A JP4370311B2 (ja) 2005-06-09 2006-05-31 編機のためのラッチニードル
CN2006100945020A CN1876925B (zh) 2005-06-09 2006-06-08 纺织机的舌针
KR1020060051830A KR100786986B1 (ko) 2005-06-09 2006-06-09 방직 기계용 걸쇠 바늘
US11/449,663 US7272958B2 (en) 2005-06-09 2006-06-09 Latch needle for textile machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05012412A EP1731651B1 (fr) 2005-06-09 2005-06-09 Aiguille à clapet pour des machines textiles

Publications (2)

Publication Number Publication Date
EP1731651A1 EP1731651A1 (fr) 2006-12-13
EP1731651B1 true EP1731651B1 (fr) 2010-04-21

Family

ID=35462355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05012412A Active EP1731651B1 (fr) 2005-06-09 2005-06-09 Aiguille à clapet pour des machines textiles

Country Status (6)

Country Link
US (1) US7272958B2 (fr)
EP (1) EP1731651B1 (fr)
JP (1) JP4370311B2 (fr)
KR (1) KR100786986B1 (fr)
CN (1) CN1876925B (fr)
DE (1) DE502005009453D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731651B1 (fr) 2005-06-09 2010-04-21 Groz-Beckert KG Aiguille à clapet pour des machines textiles
CN102517790A (zh) * 2011-12-21 2012-06-27 常州市润源经编运用工程技术研究中心有限公司 经编机的舌针
CN105420916A (zh) * 2015-12-16 2016-03-23 无锡吉进环保科技有限公司 一种经编机用针
EP3604651A1 (fr) * 2018-08-03 2020-02-05 Groz-Beckert KG Aiguille à clapet
CN113832603A (zh) * 2021-10-29 2021-12-24 鲁道夫(泉州)机械有限公司 一种自带清洁功能的刀勾一体装置及其工作方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US938795A (en) * 1909-03-08 1909-11-02 Louis N D Williams Latch-needle for knitting-machines.
GB190906666A (en) * 1909-03-19 1909-04-15 Robert Walter Scott Improvements in Latch-needles for Knitting Machines.
US1032613A (en) * 1911-06-24 1912-07-16 John J Tuller Latch knitting-needle.
DE586678C (de) * 1932-02-21 1933-10-24 Franz Meiwald Strickmaschine mit Zungennadeln
DE1113537B (de) 1954-06-25 1961-09-07 Karl Steinhof App Fabrik Handstrickapparat, Zungennadel fuer einen Handstrickapparat, und Verfahren zur Herstellung der Zungennadel
GB1591613A (en) * 1977-10-20 1981-06-24 Grieve & Co Ltd T Latch needles
JPS6190892U (fr) 1984-11-16 1986-06-12
DE4324232C2 (de) * 1993-07-20 2002-05-29 Sipra Patent Beteiligung Zungennadel für Maschinen zur Herstellung von Maschenware
DE4334051C1 (de) 1993-10-06 1995-02-16 Groz & Soehne Theodor Zungennadel für Textilmaschinen
JPH0860504A (ja) * 1994-08-26 1996-03-05 Tsudakoma Corp 編機用ベラ針
DE10106989C2 (de) * 2001-02-15 2003-04-24 Groz Beckert Kg Zungennadel mit fixierter Feder
DE10232884B4 (de) * 2002-07-19 2004-05-27 Groz-Beckert Kg Zungennadel
EP1731651B1 (fr) 2005-06-09 2010-04-21 Groz-Beckert KG Aiguille à clapet pour des machines textiles

Also Published As

Publication number Publication date
KR20060128728A (ko) 2006-12-14
JP2006342481A (ja) 2006-12-21
JP4370311B2 (ja) 2009-11-25
DE502005009453D1 (de) 2010-06-02
KR100786986B1 (ko) 2007-12-18
CN1876925B (zh) 2011-04-13
EP1731651A1 (fr) 2006-12-13
CN1876925A (zh) 2006-12-13
US20060277949A1 (en) 2006-12-14
US7272958B2 (en) 2007-09-25

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