EP1727931B1 - Aiguille à tufter gaufrée - Google Patents

Aiguille à tufter gaufrée Download PDF

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Publication number
EP1727931B1
EP1727931B1 EP05715360A EP05715360A EP1727931B1 EP 1727931 B1 EP1727931 B1 EP 1727931B1 EP 05715360 A EP05715360 A EP 05715360A EP 05715360 A EP05715360 A EP 05715360A EP 1727931 B1 EP1727931 B1 EP 1727931B1
Authority
EP
European Patent Office
Prior art keywords
tufting
needle
tufting needle
reference plane
needle according
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
EP05715360A
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German (de)
English (en)
Other versions
EP1727931A1 (fr
Inventor
Bernd Eugen Hillenbrand
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
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Groz Beckert KG
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Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1727931A1 publication Critical patent/EP1727931A1/fr
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Publication of EP1727931B1 publication Critical patent/EP1727931B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C15/00—Making pile fabrics or articles having similar surface features by inserting loops into a base material
    • D05C15/04—Tufting
    • D05C15/08—Tufting machines
    • D05C15/16—Arrangements or devices for manipulating threads
    • D05C15/20—Arrangements or devices, e.g. needles, for inserting loops; Driving mechanisms therefor
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B85/00—Needles

Definitions

  • the invention relates to an improved tufting needle.
  • Tufting needles are for example from the EP 0 874 932 B1 known.
  • the illustrated in this document tufting needle has a base body, the holding end is held in a holding body. The other end is in a tip adjacent to an eye.
  • a thread trough extends to the eye.
  • U.S. Patent 5,189,966 is a tufting needle is known, which has on its flanks curved chamfers for a loop taker. However, she has no real groove.
  • the shaft has a cross section in the region of the chamfers in the manner of an arch triangle.
  • a tufting needle is known, which is provided in the vicinity of the eye with a groove.
  • the fillet serves to provide improved access to the thread to a loop taker or other tool.
  • the tufting needle is flattened and mechanically weakened.
  • Loop grabs can hit the tufting needle in the area of the groove and reach into the groove across the needle. This results in the wear of the tufting needle as a result of material removal over time. If this is too advanced or even a breakthrough is created towards the thread channel, the tufting needle must be replaced. This has a life-limiting effect.
  • the tufting needle according to the invention has a groove provided with at least one chamfer, the chamfer standing steeper at its edge lying towards the needle flank than further inside.
  • the gripper hits the chamfer in an outer area which is at the angle ⁇ .
  • ⁇ is for example in the range of 35 ° to 50 ° and is preferably 45 °.
  • the needle body can be arranged in the tufting module with an angle of attack. This means that the reference plane of the tufting needle is not oriented at right angles to a contact surface of a needle bar. Such a position, which normally increases the friction between the gripper and the needle, is well tolerated by the needle according to the invention.
  • the needle body is preferably formed flattened. This applies in particular to the area of the groove. Also adjoining the groove portion may be formed flattened. This results in a good needle elasticity in a needle side direction and a high needle stiffness in a perpendicular side direction, which usually coincides with the material transport direction of the base material.
  • the tufting needle may have a thread trough. If this is not required, it can be left out if necessary.
  • the groove is preferably formed symmetrically with respect to a median plane. Thus it can be used in both right and left orientation.
  • the groove can be provided on both sides with bevels to allow the latter.
  • the groove is preferably again oriented symmetrically to the median plane.
  • the working method in the right orientation and in the left orientation is then the same.
  • the cross section of the needle then has an upwardly rounded or faceted roof-like shape in the region of the groove. Despite chamfering on both sides of the groove, there are large wall thicknesses towards the thread groove.
  • the symmetrical arrangement of the chamfers can also lead to an improved wear behavior of the needle for another reason. It is largely prevented that the gripper scrape in unilateral thread design during the return stroke of the needle at the edge of the groove. The risk of the formation of sharp edges, which could lead to injuries of the substrate is reduced.
  • FIG. 1 schematically illustrates a bar 1 with a tufting module 2 held thereon.
  • the tufting module 2 consists of a body 3 in or on which a group of tufting needles 4 is held.
  • the body 3 rests with a flat side on the front side 5 of the bar 1.
  • the tufting needles 4 are aligned at a distance parallel to each other down.
  • FIGS. 2 and 3 illustrate the tufting module 2 separately. How out FIG. 2 shows, the tufting needles 4 are equal to each other and flattened. With their upper end they are held in the body 3. Their ears 6 are how out FIG. 3 shows, for example, aligned with each other.
  • FIGS. 4 . 5 and 6 The structure of a single tufting needle 4 goes out of the FIGS. 4 . 5 and 6 out.
  • FIG. 6 illustrates, the tufting needle 4 on a needle body 7, which forms a up to a tip 8 extending shank 9.
  • the tip 8 marks the center of the shaft 9.
  • a longitudinal axis 11 which determines the longitudinal direction of the needle body 7 and the shaft 9 passes through the tip 8.
  • a flattened section 13 extends in the direction of the tip 8.
  • the flattened portion 13 is followed by a portion 14, which is provided with a groove 15.
  • the section 13 is at the top by a Planar surface 16 completed.
  • the groove 15 approaches the flat surface 16 closer to the longitudinal axis 11 at. It forms an elongated saddle-shaped indentation.
  • the eye 6 is provided in the immediate vicinity of the groove 15, the eye 6 is provided. It is surrounded by a planar annular surface 17, which is preferably arranged in a plane with the flat surface 16.
  • a section 18 begins in which the needle body 7 tapers towards the tip 8.
  • a thread groove 19 is formed on the flat surface 16 opposite side of the tufting needle 4, which extends over the sections 13, 14 away into the eye 6 in.
  • the cross section of the yarn channel 19 is substantially constant over its entire length.
  • FIG. 4 illustrates the cross section of the tufting needle 4, cut along in FIG FIG. 5 registered line IV-IV.
  • the thread groove 19 is preferably formed approximately trapezoidal.
  • On the thread groove 19 close on both sides legs 21, 22, which are bounded at the thread trough side by flat surfaces 23, 24.
  • the flat surfaces 23, 24 close to each other at an obtuse angle. They terminate in edges 25, 26 which lie radially clearly outside an outline 27 which the shaft 9 has in the section 12.
  • the legs 21, 22 project beyond this outline 27.
  • the eyelet cut away and thus not illustrated has a vertical opening direction.
  • This is perpendicular to a reference plane 28.
  • This is preferably aligned parallel to the plane surface 16.
  • the reference plane 28 extends longitudinally through the tufting needle 4 and thus includes the longitudinal axis 11.
  • Perpendicular to the reference plane 28 is to be considered a median plane 29 which intersects the reference plane 28, wherein the intersection line is the longitudinal axis 11.
  • the median plane 29 forms a plane of symmetry for the tufting needle 4.
  • the shape of the groove 15 shows.
  • a rounding 31 is provided, which merges into straight surfaces with respect to the longitudinal direction.
  • These surfaces include a symmetrically arranged to the center plane 29 plane surface 32, which is preferably oriented parallel to the reference plane 28.
  • chamfers 33, 34 are arranged, which intersect the reference plane 28.
  • the chamfers 33, 34 are arranged symmetrically to the center plane 29.
  • the chamfers 33, 34 are faceted. Accordingly, they each contain two strip-shaped planar surfaces 35, 36 and 37, 38, which merge into a rounded or curved surface 41, 42.
  • the surface 41 lies between the flat surfaces 35, 36.
  • the surface 42 is located between the flat surfaces 37, 38.
  • the chamfers 33, 34 via rounded or curved surfaces 43, 44 to the flat surface 32 at.
  • the flat surfaces 35, 36 and 37, 38 in pairs each include an obtuse angle. This results in different angles to the reference plane 28 or a parallels to it, as in FIG. 4 is illustrated.
  • the planar surface 38 includes a point ⁇ with a line 45 parallel to the reference surface 28.
  • the flat surface 37 includes the line 45 at an acute angle ⁇ .
  • the angle ⁇ is smaller than the angle ⁇ .
  • the angle ⁇ is in the range of 20 ° to 40 °. In the present preferred embodiment, it is 30 °.
  • the angle ⁇ is preferably in the range of 35 ° to 55 °. In the present preferred embodiment, it is 45 °.
  • the flat surfaces 35, 37 are marginal, ie they preferably end in an edge 46, 47, which lies outside the outline 27.
  • the outer flanks 48, 49 of the portion 14 are outside the outline 27.
  • the flanks 48, 49 are preferably slightly curved.
  • the tufting needle 4 described so far operates as follows:
  • a thread is passed through the thread groove and the eye 6. If the tufting needle 4 now stabs through a base material, the thread is pulled by the eyelet 6 through the base material. near the lower turning point of the needle 4, a loop taker (looper) is moved toward the tufting needle 4.
  • the looper is hook-shaped. With its tip, it first strikes the plane surface 37. Due to its strong inclination to the reference plane 28 (acute angle ⁇ ), a large distance between the edge 47 and the line 45 is achieved. Regardless of existing misalignment, tolerances, inaccuracies or bends the tip of the looper hits thus securely on the chamfer 34. He then slides first along the plane surface 37 along and then reaches the plane surface 38.
  • the curvature present in the chamfers 33, 34 leads to an enlargement of the wall thickness a, b to the yarn channel 19 at 41 and 42, respectively. Ultimately, this not only benefits the stiffness of the tufting needle 4 but also its wear resistance. Gradual removal of the existing wall leads to untoward wear only after very long use.
  • a novel tufting needle 4 is characterized by a preferably with respect.
  • a center plane 29 symmetrically formed groove 15, which is provided on both sides with chamfers 33, 34.
  • the chamfers 33, 34 have an only slightly acute angle .alpha.
  • To a reference plane 28 in an area lying on the inside, ie lying close to the center plane 29, while they are in an outer area adjoining the edge (edges 46, 47) are inclined at a larger acute angle ⁇ against the reference plane 28. This improves the rigidity, the tufting properties and the mechanical stability and wear resistance of the new tufting needle 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tires In General (AREA)
  • Nonwoven Fabrics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Finger-Pressure Massage (AREA)

Claims (14)

  1. Aiguille à tufter (4)
    comportant un corps d'aiguille (7) qui présente une tige (9) qui s'effile en formant une pointe à l'extrémité et qui est munie d'un chas (6) et, à proximité de celui-ci, d'une gorge (15), la direction d'ouverture du chas (6) étant perpendiculaire à un plan de référence (28),
    la gorge (15) étant munie d'au moins un chanfrein (33,34), caractérisée en ce que le chanfrein (33, 34) est disposé obliquement par rapport au plan de référence (28) et forme à proximité du milieu de l'aiguille (29) un angle aigu (α) par rapport au plan de référence (28), qui est inférieur à un angle (β) que forme le chanfrein (33, 34), par rapport au plan de référence (28), dans des zones latéralement plus éloignées du milieu de l'aiguille (29).
  2. Aiguille à tufter selon la revendication 1, caractérisée en ce que le corps d'aiguille (7) a une forme aplatie.
  3. Aiguille à tufter selon la revendication 1, caractérisée en ce que le corps d'aiguille (7) est muni, sur le côté situé à l'opposé de la gorge (15), d'une rainure (19) destinée à un fil.
  4. Aiguille à tufter selon la revendication 1, caractérisée en ce que la gorge (15) présente la forme d'une surface oblongue qui est en forme de dos d'âne.
  5. Aiguille à tufter selon la revendication 1, caractérisée en ce qu'elle a une conformation symétrique par rapport à un plan médian (29) qui est perpendiculaire au plan de référence (28) et qui est orienté dans la direction longitudinale (11) de l'aiguille.
  6. Aiguille à tufter selon la revendication 1, caractérisée en ce que la gorge (15) est munie de chanfreins (33, 34) des deux côtés.
  7. Aiguille à tufter selon la revendication 6, caractérisée en ce que les chanfreins (33, 34) sont conformés symétriquement par rapport à un plan médian (29) qui est perpendiculaire au plan de référence (28) et qui est orienté dans la direction longitudinale (11) de l'aiguille.
  8. Aiguille à tufter selon la revendication 1, caractérisée en ce que le chanfrein (33, 34) s'étend sur toute la longueur de la gorge (15).
  9. Aiguille à tufter selon la revendication 1, caractérisée en ce que le chanfrein (33, 34) présente au moins deux surfaces du genre facettes (35, 36 ; 37, 38), qui forment respectivement des angles (α,β) différents, par rapport au plan de référence (28).
  10. Aiguille à tufter selon la revendication 9, caractérisée en ce que les facettes (35, 36 ; 37, 38) se raccordent par une surface arrondie (41, 42).
  11. Aiguille à tufter selon la revendication 1, caractérisée en ce que le chanfrein (33, 34) se présente sous forme d'une surface bombée (41, 42).
  12. Aiguille à tufter selon la revendication 1, caractérisée en ce que la tige (9) a dans la zone de la gorge (15) une plus grande largeur que celle qu'elle présente ailleurs.
  13. Aiguille à tufter selon la revendication 1, caractérisée en ce que, dans la gorge (15), est prévue entre les chanfreins (33, 34) une surface plane (32) qui est en retrait par rapport aux surfaces voisines (16, 17).
  14. Aiguille à tufter selon la revendication 1, caractérisée en ce que la direction d'ouverture du chas (6) est perpendiculaire au plan de référence (28) et que l'évasement d'entrée est aligné parallèlement au plan de référence (28).
EP05715360A 2004-03-20 2005-02-17 Aiguille à tufter gaufrée Active EP1727931B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004004401U DE202004004401U1 (de) 2004-03-20 2004-03-20 Geprägte Tuftingnadel
PCT/EP2005/001585 WO2005095703A1 (fr) 2004-03-20 2005-02-17 Aiguille à tufter matricée

Publications (2)

Publication Number Publication Date
EP1727931A1 EP1727931A1 (fr) 2006-12-06
EP1727931B1 true EP1727931B1 (fr) 2008-06-04

Family

ID=32336919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05715360A Active EP1727931B1 (fr) 2004-03-20 2005-02-17 Aiguille à tufter gaufrée

Country Status (8)

Country Link
US (1) US7328664B2 (fr)
EP (1) EP1727931B1 (fr)
JP (1) JP4436411B2 (fr)
KR (1) KR100790674B1 (fr)
CN (1) CN1946893B (fr)
AT (1) ATE397688T1 (fr)
DE (2) DE202004004401U1 (fr)
WO (1) WO2005095703A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100425600C (zh) * 2001-12-27 2008-10-15 科学研究和应用咨询公司 苯并噻唑－和苯并唑－4,7－二酮衍生物及其作为cdc25磷酸酯酶抑制剂的用途
EP2412859B9 (fr) * 2010-07-28 2013-06-19 Groz-Beckert KG Crochet de tuftage avec support élastique d'un insert
PL3153617T3 (pl) * 2015-10-08 2018-11-30 Groz-Beckert Kg Igła do maszyny do szycia i sposób szycia
EP3165659B1 (fr) * 2015-11-05 2018-08-29 Oskar Dilo Maschinenfabrik KG Module à aiguilles pour planche à aiguilles d'une aiguilleteuse
US11193225B2 (en) 2016-03-17 2021-12-07 Card-Monroe Corp. Tufting machine and method of tufting
US10233578B2 (en) * 2016-03-17 2019-03-19 Card-Monroe Corp. Tufting machine and method of tufting
CN112074633B (zh) * 2018-01-13 2022-10-25 塔夫特科公司 带颜色设置和图案缩放的可变针距或多针距簇绒
US11585029B2 (en) 2021-02-16 2023-02-21 Card-Monroe Corp. Tufting maching and method of tufting
JP2024524163A (ja) 2021-06-21 2024-07-05 カード－モンロー コーポレイション タフティング機およびタフティング方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929082A (en) * 1975-04-16 1975-12-30 Singer Co Needles for tufting or the like
US3954072A (en) * 1975-05-28 1976-05-04 The Singer Company Needles for tufting or the like
US4194457A (en) * 1978-11-22 1980-03-25 Spencer Wright Industries, Inc. Tufting machine needles
DE8315049U1 (de) * 1983-05-21 1983-09-29 Fa. Jos. Zimmermann, 5100 Aachen Tuftingnadel
DE8814944U1 (de) * 1988-12-01 1990-04-05 Jos. Zimmermann GmbH & Co KG, 5100 Aachen Modul mit Tuftingwerkzeugen
JPH0718790Y2 (ja) * 1988-12-20 1995-05-01 旭貿易株式会社 タフティング機のニ−ドル
US5158022A (en) 1991-05-06 1992-10-27 Acf Industries, Inc. Hatch vent assembly for railroad cars with baffle and screen mesh to prevent entry of contaminants
DE9106591U1 (de) * 1991-05-29 1991-07-11 Singer Spezialnadelfabrik GmbH, 5102 Würselen Nähmaschinennadel
JPH05189966A (ja) * 1992-01-10 1993-07-30 Sharp Corp 半導体記憶装置
US5189966A (en) 1992-04-24 1993-03-02 Spencer Wright Industries, Inc. Tufting apparatus and method for forming loop pile
JPH0874932A (ja) * 1994-08-31 1996-03-19 Bridgestone Corp ブッシュ型防振装置
DE19600328C1 (de) 1996-01-08 1997-02-13 Zimmermann Jos Gmbh & Co Kg Tuftingnadeln für ein Nadelmodul
CN2322985Y (zh) * 1997-10-30 1999-06-09 青岛市市南亚威福利针厂 机针
DE19921913C2 (de) * 1999-05-12 2001-06-13 Groz Beckert Kg Nähmaschinennadel mit schlankem Öhr
CN2591064Y (zh) * 2002-12-17 2003-12-10 常州市金尔利地毯机件有限公司 簇绒地毯编织机的编织组件

Also Published As

Publication number Publication date
US7328664B2 (en) 2008-02-12
JP4436411B2 (ja) 2010-03-24
US20070193487A1 (en) 2007-08-23
DE502005004344D1 (de) 2008-07-17
ATE397688T1 (de) 2008-06-15
JP2007529639A (ja) 2007-10-25
WO2005095703A1 (fr) 2005-10-13
CN1946893B (zh) 2010-06-16
EP1727931A1 (fr) 2006-12-06
DE202004004401U1 (de) 2004-05-19
KR100790674B1 (ko) 2008-01-02
CN1946893A (zh) 2007-04-11
KR20070024494A (ko) 2007-03-02

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