EP2412860A1 - Greifer mit Doppeleinsatzkörper - Google Patents

Greifer mit Doppeleinsatzkörper Download PDF

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Publication number
EP2412860A1
EP2412860A1 EP10171112A EP10171112A EP2412860A1 EP 2412860 A1 EP2412860 A1 EP 2412860A1 EP 10171112 A EP10171112 A EP 10171112A EP 10171112 A EP10171112 A EP 10171112A EP 2412860 A1 EP2412860 A1 EP 2412860A1
Authority
EP
European Patent Office
Prior art keywords
tufting
insert
gripper
cutting
cutting insert
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.)
Withdrawn
Application number
EP10171112A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2412860A9 (de
Inventor
Günter Büchle
Reinhold Eydner
Karl Voßler
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 EP10171112A priority Critical patent/EP2412860A1/de
Priority to US13/156,545 priority patent/US20120024208A1/en
Priority to KR1020110070808A priority patent/KR20120011323A/ko
Priority to JP2011164861A priority patent/JP2012031561A/ja
Priority to CN2011102117143A priority patent/CN102345216A/zh
Publication of EP2412860A1 publication Critical patent/EP2412860A1/de
Publication of EP2412860A9 publication Critical patent/EP2412860A9/de
Withdrawn legal-status Critical Current

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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
    • D05C15/22—Loop-catching arrangements, e.g. loopers; Driving mechanisms therefor
    • 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
    • D05C15/24—Loop cutters; Driving mechanisms therefor
    • 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

Definitions

  • the invention relates to a tufting gripper for a tufting machine, in particular for the production of goods with Schneidflor.
  • Tailored fabrics for example carpets, are typically made on tufting machines having a gripper with many grippers.
  • the grippers are assigned cutting blades. This arrangement is for example from the EP 1 826 306 A1 known.
  • the grippers work there with needles of a bar, which pierce the pile thread through a carrier material.
  • the resulting loops are picked up by the grippers, which are provided with a cutting edge.
  • Each gripper is associated with a cutting knife, which serves to cut open the loops received by the respective gripper.
  • the grippers here also each have a base body which operates as a counter blade element for the cutting blade and correspondingly has a cutting edge.
  • the grippers serving to receive the pile thread loops stroke the tufting needles during operation of the tufting device. Damage to the tufting needles can be the result. For example, the tufting needle travels along the needle eye of the tufting needle on the hard metal insert of the gripper, causing sharp edges to form on the eye, as a result of which individual filaments of the pile yarn used are damaged. Also, damage to the tufting gripper at the contact points between the gripper body and needle can not be excluded.
  • the claimed further insert has a different surface and is preferably positioned at the position of the gripper body that comes into contact with the tufting needle.
  • This insert preferably has a surface that does not damage the tufting needle when the tufting needle and the further insert in question come into contact with each other.
  • the surface can have good sliding properties.
  • the further insert of a soft metal or non-metal may consist of a low coefficient of friction ceramic or a metal having a coating which ensures a low coefficient of friction and a low abrasive action between the surface of the insert and the tufting needle.
  • the surface may be a carbonitride coating or a ceramic coating. This coating can also be applied directly to the gripper body, so that the further insert and the gripper body ultimately as a one-piece Part can be considered.
  • both for the cutting insert as well as for further use is that it can be arranged in a pocket of the gripper body and secured in this.
  • To secure the relevant cutting insert and other use with the gripper body can be positively and / or cohesively connected.
  • the cutting insert and / or the other insert with the gripper body is soldered, glued, welded (eg by provided on the edge of the bag welds or seams) and / or by a plastic deformation of the pocket edge of the bag from which the insert in question is taken on Secured place.
  • one or more spring means may be provided on the gripper body which preferably urge the cutting insert and / or other insert into their desired position forward towards the gripper tip and thereby secure it in the desired position. This may be assisted by a cohesive connection between the respective insert and the gripper body, for example by a braze or another e.g. flexible compound.
  • the spring means provided on the gripper body then acts mainly in the correct position of the insert.
  • the two inserts can be accommodated in separate pockets or in a common bag.
  • the pocket may be formed as a cutout on the gripper body and thus be open to both flat sides of the gripper body.
  • the two inserts can be arranged lying flat on top of each other in this section or in this pocket and connected to the gripper body.
  • the two inserts can be interconnected, for example, cohesively. They can be soldered, glued or welded together his. They consist of different materials or at least have different surfaces. They can also consist of a same base material and be coated differently only on both sides facing away from each other. It is also possible to form the two coatings on a single carrier body.
  • a combined unit is formed, on which both the hard material surface and the other surface other than the hard material surface are formed.
  • the combined insert may be connected to the gripper body in any of the ways described above.
  • spacer means may be formed on the relevant insert (cutting insert and / or other insert and / or combined unit).
  • spacer means are, for example, one or more protrusions placed at appropriate locations on the circumference of the insert, for example small ribs or knobs that rise above the edge of the insert. The height of the respective projection corresponds to the desired thickness of the joint.
  • FIG. 1 a tufting device 10 is illustrated, which serves for the production of tufted goods 11. It is, for example, a carpet with cut pile. To this belongs a level, in FIG. 1 It is provided with a pile yarn 13 which is stung by the carrier material 12 to form loops 14 initially. These are cut open in the further process to form open loops and thus cutting edge 15.
  • the cutting blade 17 are also arranged in a corresponding number on a bar, which performs the gripper 16 a counter-directed movement for cutting.
  • the body 19 of the gripper 16 has a, as FIG. 1 shows elongated gripping fingers 22 extending toward the tufting needle 18 and a base portion 24.
  • the gripping finger 22 may have at its free end a bent away from the substrate 12 nose 23, which forms a hook. Between the nose 23 and the base portion 24 of the body 19 of the gripper 16, the finger 22 extends straight.
  • the finger 22 serves to receive the loops 14, such as FIG. 1 shows. At its lower side it has a straight edge 25 for this purpose. This serves, at least on one side of the gripper body 19, as a cutting edge 26th
  • the cutting edge 26 is formed on a cutting insert 27 and extends, at least in the present embodiment, but not necessarily, over the entire length of the finger 22 from the base portion 24 to the nose 23.
  • the cutting insert 27 adjacent another insert 28 is arranged, in the present embodiment has a same outline as the cutting insert 27 and rests with this on a flat surface 29. While the cutting insert 27 terminates with the flat side 21 of the tufting gripper 16 ( FIG. 3 ) the other insert 28 connects without steps and without abutments to the flat side 20 ( FIG. 2 ).
  • the cutting insert 27 and the further insert 28 are connected to each other on the flat surface 29, for example by adhesive or a solder, and thus form a unit 30, as in particular FIG. 4 evident.
  • Other bonding techniques such as laser spots or seams on the edge of the surface 29 are applicable.
  • the unit 30 and thus both the cutting insert 27 and the further insert 28 are positioned in a pocket 31 which is formed in the gripper body 19 and extends from the base portion 24 to the nose 23.
  • the bag 31 is how FIG. 2 and 3 can be seen, open to both flat sides 20, 21 of the gripper body 19.
  • the existing of the two inserts 27, 28 unit 30 may be secured in the pocket 31 cohesively.
  • the cutting insert 27 has a hard material surface 32. If the cutting insert 27 is formed of a hard material, the surface 32 may be, for example, a surface made of this material. Such a material may be hardened steel, hard metal, such as tungsten carbide, a cermet or a ceramic. It is also possible to form the cutting insert 27 from a first hard material and the hard material surface 32 from a second hard material. For example, the cutting insert 27 may consist of tungsten carbide and the hard material surface 32 of titanium nitride, aluminum oxide, another hard material or a layer structure consisting of different hard materials.
  • the hard material surface 32 extends at least to the cutting edge 26 and preferably around this around to a narrow bottom 33 of the cutting insert 27 (FIG. FIG. 4 ).
  • the further insert 28 is preferably made of a different material as the cutting insert 27. Preferably, it is a material with a low coefficient of friction.
  • the insert 28 has on the flat side 20 then a surface 34 which differs significantly from the hard material surface 32.
  • the surface 34 has a low abrasion effect with respect to contact with the tufting needle 18.
  • the further insert 28 may consist of a substance with emergency lubricating properties, for example a carbon-containing metal framework, a tin-containing metal framework or the like.
  • the surface 34 may be a ceramic surface with a low coefficient of friction and minimum roughness.
  • the cutting blades 17 touch the cutting insert 27 and slide on its hard material surface 32 along.
  • the wear is low.
  • the tufting needles 18 come into contact with the tufting grippers 16. In particular, the tufting needles 18 slide along the further insert 28.
  • the pocket 31 does not pass through the entire thickness of the tufting gripper 16. Rather, it has a bottom 35 which divides the pocket 31 into two individual pockets 36, 37.
  • the pockets 36, 37 may have the same outline or different outlines. They are open to different sides. While the single pocket 36 adjoins the flat side 21, the single pocket 37 adjoins the flat side 20.
  • the cutting insert 27 and the other insert 28 may be materially secured, for example by gluing or soldering, in the pockets 36, 37.
  • the combined unit 30, which is formed from the two inserts 27, 28, as it FIG. 6 shows, based on a common body 38 be constructed.
  • This can be provided on one side with a thin plate or a layer 39, which forms the hard material surface 32.
  • the hard material surface 32 in turn closes without offset and without joints on the flat side 21st on.
  • the surface 34 lying on the other side of the tufting gripper 16 preferably consists of another material which may be applied to the base body 38 in the form of a thin layer or plate 40.
  • This plate or layer 40 then forms in the form of the lateral surface 34 a sliding surface, in particular for the tufting needle 18.
  • the cutting insert 27, the further insert 28 and / or the unit 30 after FIG. 4 or 6 can view the page in accordance with FIG. 7 respectively.
  • the outer periphery of the respective insert which faces the wall of the pocket 31 (36 or 37), may be provided with spacer means 41.
  • spacer means are, for example, knob-like or rib-like projections 42, 43 whose height corresponds to the thickness of the desired joint, which forms between the periphery unit 30 and the edge of the pocket 31. Preferably, this height is a few tenths of a millimeter. It serves to produce, for example, a Hartlotfuge defined thickness and thus the respective insert 27 or the relevant unit 30 thus to position very precisely in the pocket 31.
  • FIG. 8 Another embodiment of the invention is in the form of the tufting gripper 44 in FIG FIG. 8 illustrated. He has an extended finger 22. For example, the nose 23 can be omitted. It is assumed that the cutting insert 27 and the further insert 28 are arranged as a combined unit in the pocket 31.
  • the bag 31 has at its tip-side end a form-fitting structure 45, which secures the unit 30 in the pocket 31 when the unit 30 is pressed against this form-fitting structure 45.
  • the edge of the pocket 31 has an arc shape at its tip-side end.
  • the edge of the bag 31 engages under the insert or the unit 30 like a hook and secures it positively in the vertical direction. Based on the transverse direction of flat side 20 to flat side 21, the edge of the pocket 31 may be straight.
  • the interlocking structure 45 may have a transversely of the tufting gripper 45 rounded or angled shape to secure the lateral position of the unit 30 positively.
  • a spring means 46 is arranged, which biases the unit 30 against the interlocking structure 45.
  • the spring means 46 is formed for example by a provided on the body of the tufting gripper 44 freed spring tongue 47. By the spring force applied by the spring means 46, the unit 30 is positively positioned. As a result, the gap at the transition from the body 19 of the tufting gripper 44 to the insert or unit 30 is as small as possible.
  • cohesively connecting the unit 30 with the tufting gripper 44 thus an exact positioning of the insert or the unit 30 is given. This position is crucial for the quality of the resulting transition between the side surfaces of the insert or the unit 30 and the flat sides of the tufting gripper 44. Due to the precise non-positive fixation of the unit 30 during the soldering process laterally acting forces during solidification of the solder or curing of a Adhesive has no negative impact on the attachment.
  • This manner of securing the insert by spring force by means of a spring means 46 can be applied separately to the unit 30 as well as to the cutting insert 27 and the further insert 28 in all the embodiments mentioned above, both on embodiments with spacer means 41 as well as on embodiments without spacer means 41.
  • an additional insert 28 is provided which is directed to cooperate with the tufting needle 18. It consists of a material that forms an optimal sliding pairing with the tufting needle 18.
  • the further insert 28 is preferably a soft needle-protecting insert.
  • the cutting insert 27 is preferably a hard, wear-resistant insert.
  • the two inserts 27, 28 can be accommodated separately in different pockets 36, 37 or in a common pocket 31. They can be connected to each other or formed in one piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Machines (AREA)
EP10171112A 2010-07-28 2010-07-28 Greifer mit Doppeleinsatzkörper Withdrawn EP2412860A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10171112A EP2412860A1 (de) 2010-07-28 2010-07-28 Greifer mit Doppeleinsatzkörper
US13/156,545 US20120024208A1 (en) 2010-07-28 2011-06-09 Gripper with dual-insert body
KR1020110070808A KR20120011323A (ko) 2010-07-28 2011-07-18 2중 인서트 본체를 갖는 파지기
JP2011164861A JP2012031561A (ja) 2010-07-28 2011-07-27 二重インサートを有するグリッパ
CN2011102117143A CN102345216A (zh) 2010-07-28 2011-07-27 具有双刀片体的夹持器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171112A EP2412860A1 (de) 2010-07-28 2010-07-28 Greifer mit Doppeleinsatzkörper

Publications (2)

Publication Number Publication Date
EP2412860A1 true EP2412860A1 (de) 2012-02-01
EP2412860A9 EP2412860A9 (de) 2012-10-03

Family

ID=43431799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171112A Withdrawn EP2412860A1 (de) 2010-07-28 2010-07-28 Greifer mit Doppeleinsatzkörper

Country Status (5)

Country Link
US (1) US20120024208A1 (ko)
EP (1) EP2412860A1 (ko)
JP (1) JP2012031561A (ko)
KR (1) KR20120011323A (ko)
CN (1) CN102345216A (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102801A1 (de) * 2014-03-03 2015-09-03 Groz-Beckert Kg Profilierter Schlingengreifer
DE102015101495A1 (de) * 2015-02-03 2016-08-04 Groz-Beckert Kg Schlingengreifer mit Rückhalteelement
US10731282B2 (en) 2017-05-22 2020-08-04 Groz-Beckert Kg Gripper for a tufting machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114667374A (zh) * 2019-11-07 2022-06-24 范德威尔瑞典公司 具有插入件的簇绒工具
US11585029B2 (en) 2021-02-16 2023-02-21 Card-Monroe Corp. Tufting maching and method of tufting

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152563A (en) * 1961-03-15 1964-10-13 Lees & Sons Co James Tufting machine and looper for producing j-loops
DE2341567A1 (de) * 1973-08-17 1975-02-27 Rolf Doerschel Greifwerkzeug fuer tufting-maschinen
EP1826307A1 (de) 2006-02-24 2007-08-29 Groz-Beckert KG Greifeinrichtung für Tuftingmaschine
EP1826306A1 (de) 2006-02-24 2007-08-29 Groz-Beckert KG Greifereinrichtung für eine Tuftingmaschine
EP1908871A1 (de) * 2006-10-06 2008-04-09 Groz-Beckert KG Greifer für Tuftingmaschine
EP1953290A1 (de) 2007-02-01 2008-08-06 Groz-Beckert KG Greifer für Tuftingmaschine
US20090107371A1 (en) * 2007-02-01 2009-04-30 Groz-Beckert Kg Gripper for a tufting machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090021A (en) * 1935-06-18 1937-08-17 A & M Karagheusian Inc Pile cutter
US2800096A (en) * 1954-07-14 1957-07-23 American Safety Razor Corp Tufter hook
CA955127A (en) * 1970-08-26 1974-09-24 Teijin Limited Knives for the gru-gru cutter
US3752096A (en) * 1971-04-28 1973-08-14 Bigelow Sanford Inc Looper and method for producing cut pile tufts
JPS541155A (en) * 1977-06-02 1979-01-06 Yoshio Yamamoto Topper in tufting machine
US4602576A (en) * 1985-11-08 1986-07-29 Cox Ronnie L Tufting machine hook
JP2586720Y2 (ja) * 1992-09-09 1998-12-09 有限会社 奈良 タフティング機のルーパー
DE4435723C2 (de) * 1994-10-06 1996-08-08 Zimmermann Jos Gmbh & Co Kg Tuftingverfahren sowie zur Ausführung dieses Verfahrens geeignete Tuftingvorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152563A (en) * 1961-03-15 1964-10-13 Lees & Sons Co James Tufting machine and looper for producing j-loops
DE2341567A1 (de) * 1973-08-17 1975-02-27 Rolf Doerschel Greifwerkzeug fuer tufting-maschinen
EP1826307A1 (de) 2006-02-24 2007-08-29 Groz-Beckert KG Greifeinrichtung für Tuftingmaschine
EP1826306A1 (de) 2006-02-24 2007-08-29 Groz-Beckert KG Greifereinrichtung für eine Tuftingmaschine
EP1908871A1 (de) * 2006-10-06 2008-04-09 Groz-Beckert KG Greifer für Tuftingmaschine
EP1953290A1 (de) 2007-02-01 2008-08-06 Groz-Beckert KG Greifer für Tuftingmaschine
US20090107371A1 (en) * 2007-02-01 2009-04-30 Groz-Beckert Kg Gripper for a tufting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102801A1 (de) * 2014-03-03 2015-09-03 Groz-Beckert Kg Profilierter Schlingengreifer
DE102014102801B4 (de) * 2014-03-03 2015-11-05 Groz-Beckert Kg Profilierter Schlingengreifer
DE102015101495A1 (de) * 2015-02-03 2016-08-04 Groz-Beckert Kg Schlingengreifer mit Rückhalteelement
DE102015101495B4 (de) * 2015-02-03 2016-08-25 Groz-Beckert Kg Schlingengreifer mit Rückhalteelement
US10385493B2 (en) 2015-02-03 2019-08-20 Groz-Beckert Kg Loop gripper with retaining element
US10731282B2 (en) 2017-05-22 2020-08-04 Groz-Beckert Kg Gripper for a tufting machine

Also Published As

Publication number Publication date
US20120024208A1 (en) 2012-02-02
KR20120011323A (ko) 2012-02-07
JP2012031561A (ja) 2012-02-16
EP2412860A9 (de) 2012-10-03
CN102345216A (zh) 2012-02-08

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