EP2412859B9 - Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes - Google Patents

Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes Download PDF

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Publication number
EP2412859B9
EP2412859B9 EP10171111.7A EP10171111A EP2412859B9 EP 2412859 B9 EP2412859 B9 EP 2412859B9 EP 10171111 A EP10171111 A EP 10171111A EP 2412859 B9 EP2412859 B9 EP 2412859B9
Authority
EP
European Patent Office
Prior art keywords
insert
tufting
gripper
edge
cavity
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.)
Not-in-force
Application number
EP10171111.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2412859B1 (de
EP2412859A1 (de
Inventor
Ingo Bitzer
Andreas Englmeier
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 PT101711117T priority Critical patent/PT2412859E/pt
Priority to EP10171111.7A priority patent/EP2412859B9/de
Priority to US13/167,245 priority patent/US8302546B2/en
Priority to KR1020110071712A priority patent/KR101296100B1/ko
Priority to CN201110211648.XA priority patent/CN102345215B/zh
Priority to JP2011164862A priority patent/JP5897276B2/ja
Publication of EP2412859A1 publication Critical patent/EP2412859A1/de
Publication of EP2412859B1 publication Critical patent/EP2412859B1/de
Application granted granted Critical
Publication of EP2412859B9 publication Critical patent/EP2412859B9/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D05C15/20—Arrangements or devices, e.g. needles, for inserting loops; Driving mechanisms therefor

Definitions

  • the invention relates to a tufting gripper for tufting machines for the production of tufted goods, in particular for the production of tufted goods with Schneidflor.
  • Tufting grippers are used in tufting machines to capture thread loops, which have been previously generated by tufting needles that pierce a pile thread through a sheet-like carrier material.
  • tufting gripper interacts with cutting blades, which are also held on a bar and perform a directed against the movement of the tufting gripper cutting motion.
  • this often has an insert on which the cutting edge is formed.
  • a tufting gripper is from the EP 1 953 290 known.
  • the gripper has a cutting insert made of hard metal, which is inserted into a pocket of the gripper body and secured there by projections of the pocket edge.
  • pile yarns used to make cut pile yarns have very fine filaments which are free to slide along the lower edge of the tufting grab and should not be caught in seams or steps between the insert and the hook body. Even if such joints are filled by brazing, remaining steps can lead to yarn damage, which is to be avoided in order to achieve a good product quality.
  • the tufting gripper has a gripper body with a pocket, in which an insert, for example a cutting insert, a Gleitschutzmon or a combined cutting and Gleitschutzmon is used.
  • an insert for example a cutting insert, a Gleitschutzmon or a combined cutting and Gleitschutzmon is used.
  • a spring means is arranged, which is assigned to the use. If the insert is inserted into the pocket, the spring means causes a force-locking clamping of the same.
  • the spring force is directed towards the tip of the gripper body. The spring force positions and clamps the insert in a well-defined position. As a result, the gap at the transition from the gripper body to the insert, in particular at the tip end of the pocket, is low or zero.
  • the tufting gripper can be designed so that the clamping force applied by the spring means is sufficient to hold the insert in place and to fix.
  • the tufting gripper additionally by a cohesive connection means, such as an adhesive or a solder, in its desired position to secure.
  • the spring means in this case serves to prevent slippage or misplacement of the insert during the introduction and curing of an adhesive or during introduction and hardening of a solder and to obtain a controlled small gap width in the joint gap. It is desirable to ideally design the gap width as close to zero as possible.
  • the action of the spring means the exact positioning of the insert and the maintenance of this position can be ensured in the integral connection of insert and gripper body, which is crucial for the quality of the transition between insert and gripper body.
  • the bonding agent adheresive, solder or the like
  • the bag may have a bottom and thus be open only to one side of the tufting gripper. It is also possible that the bag is open to both sides. In this case, two different inserts may be arranged in the pocket, which point to the two flat sides of the tufting gripper and have different surfaces. It is also possible to provide a combined insert which has different surface properties on sides facing away from one another.
  • the pocket edge is preferably straight in the transverse direction of the tufting gripper. In this case, the insert, if or as long as no solder or other cohesive connection means is introduced, frictionally held. It can be attached to the pocket edge and one or more undercuts, the use in Secure the pocket with a positive fit.
  • the spring means then preferably pushes the insert toward the hook tip into corresponding recesses formed in the pocket edge. The depressions or elevations formed on the pocket edge securely hold the insert in place even during operation of the tufting gripper without additional connecting means.
  • the spring means is preferably a spring tongue, which may be exempted at the edge of the bag.
  • it consists of the material of the tufting gripper and passes seamlessly and without joints in these.
  • the spring tongue extends for more than three quarters of the corresponding side length of the insert, whereby this is securely clamped on the other hand with sufficient elasticity on the one hand and sufficient clamping force.
  • the insert or the gripper body can have spacer means, for example in the form of knobs. This can be used to ensure the generation of adhesive or solder joint quality.
  • FIG. 1 there is illustrated a tufting apparatus 10 for making pile fabrics 11 such as carpets and the like.
  • the pile fabric 11 comprises a flat carrier material 12, from which, with the aid of a plurality of pile yarns 13, loops 14 are attached which, when cut open, form a cutting pile 15. This is done by means of a larger number held on a bar tufting gripper 16, which cutting blades 17 are assigned.
  • the pile yarn 13 is pierced by the carrier material 12 by means of a group of tufting needle 18 held by a bar.
  • the forming loops 14 are received by the tufting gripper 16.
  • it has a gripper body 19 with a finger 21 extending toward a tip 20.
  • the gripper body 19, including the finger 21 is a flat part, with two flat sides 22, 23, which may be flat or have at least flat portions formed. Slot-like passages are formed between adjacent flat sides of adjacent tufting grippers 16, into which the tufting needles 18 enter, so that subsequently the tufting grippers 16 can pick up the loops pierced by the tufting needles 18 through the carrier material 12.
  • the tip 20 of the tufting gripper 16 can be angled down like a hook. However, it can also, as shown, lie in a straight extension of the finger 21. The slippage of the stitches can then by a in FIG. 1 dashed lines indicated spring 24 can be prevented.
  • This spring 24 may be formed by a thin, laterally resiliently applied to the end of the finger 21 spring plate.
  • the tufting gripper 16 is provided with an insert 25, which consists for example of hard metal, ceramic or the like.
  • the insert 25 is seated in a pocket 26 which is formed in the gripper body 19 and whose edge 27 follows the contour of the insert 25.
  • the insert 25 may be formed, for example, as a cutting insert. It then extends over a longer portion of the finger 21 and arranged in the pocket 26.
  • a cutting edge 28 (FIG. FIG. 3 ), which cooperates with the knife 17 when cutting the loops 14.
  • the insert 25 can, as shown, consist of two flat and contoured superimposed and possibly interconnected, for example glued, welded or soldered part inserts 29, 30. These may lie against each other at a flat or profiled interface 31 or be connected to each other.
  • the partial insert 30 is designed as a hard insert and defines the cutting edge 28. It may consist of a hard material or be provided with a hard material surface. Hard materials are hard metals in this sense, metal carbides, such as tungsten carbide, or hard material layers such as titanium nitride, titanium carbide, alumina, ceramics and the like. This ensures the wear resistance of the cutting edge 28.
  • the other insert 29 may be formed, for example, as a slide protection insert. It may be made of a different material which, as the needle passes along it, reduces or eliminates damage to the needle. For example, it can be a soft fabric, optionally a fabric with emergency lubricating properties, or a particularly smooth fabric whose surface in material pairing with the tufting needle 18 has a low coefficient of friction. Ceramics, in particular glass-like surfaces, carbon or tin-filled metal matrices, carbonitride-coated surfaces or the like can be used for the application.
  • the basic structure in cross section is also evident FIG. 4 , As can be seen, the edge 27 of the pocket 26 is transversely, for example straight. The flat sides 22, 23 are thus perpendicular to the edge 27 of the pocket 26th
  • the tip-side end of the pocket 26 is preferably formed by a section 32 (FIG. FIGS. 2 and 3 ), which leads around the tip 33 of the insert 25 around, and thus understands this. Seen from below, the arcuate portion 32 at the tip end of the pocket 26 forms an undercut. This ensures the insert 25 on the finger 21 in the form of a positive locking in the vertical direction.
  • section 32 follows a cylinder wall. The insert 25 can thus be inserted laterally into the pocket 26 and is then held in this.
  • the opposite end of the pocket 26 in section 32 is preferably formed by a spring means 34 which serves to push the insert 25 towards the tip 20, ie into the end of the pocket 26 adjacent the tip 20.
  • the spring means 34 may in principle be arranged elsewhere in the pocket 26, however, the described and in the FIGS. 1 to 3 illustrated arrangement on the rear edge of the bag preferred.
  • the spring means 34 is preferably formed by a spiral spring 35, which conforms to the contour 33 of the insert 25 lying opposite the tip 33, ie follows this contour.
  • the contour 36 is rounded arcuate.
  • the spiral spring 35 on the insert 25 facing side rounded arcuate. The bending spring 35 thus forms part of the edge 27 of the pocket 26.
  • the bending spring 35 is preferably formed from the material of the gripper body 19, in which, starting from the edge 27, an incision 37 is formed, which is away from the edge 27 and this then followed at a distance. As a result, the bending spring 35 is released. This may, as shown, have a uniform thickness along its length from its tip to its end 38, its root where it merges into the gripper body 19. However, the bending spring 35 may also have a, towards its root, increasing thickness, as it FIG. 3 suggests. In addition, in the vicinity of its root 38, on the side facing the pocket 26, a shallow recess 39 may be provided to prevent the insert 25 from pressing against non-resilient or poorly resilient parts of the bending spring 35.
  • the assembly of such a gripper 16 is carried out by the insert 25 is pressed into the pocket 26 and positioned there as desired.
  • the two flat sides 40, 41 of the insert 25 are steplessly and without offset, against the flat sides 22, 23 of the gripper body 19 ( FIG. 6 ).
  • the insert 25 is pressed with its tip 33 into the arcuate end at the portion 32 of the pocket 26.
  • the insert 25 is thereby clamped with respect to the transverse direction and held in a form-fitting manner in the vertical direction. Any gap or step at the transition from the insert 25 to the gripper body 19 is small.
  • the insert 25 can be materially connected to the gripper body 19, for example glued or soldered or welded become.
  • the spring means 34 ensures the secure fit of the insert in its desired position until the adhesive has cured. In case of soldering, this applies accordingly until the solder has cooled and solidified.
  • the resilient clamp also fixes the insert.
  • the tufting device 10 works, briefly summarized, as follows:
  • the grippers 16 held on a bar perform a swinging motion, during which they continually receive the pile thread loops formed by the tufting needles 18 as the carrier material 12 pierces.
  • the loops 14 collect on the finger 21, as is FIG. 1 shows. Due to the advancement of the carrier material 12, the loops 14 received by the tufting gripper 16 always slide away from the tip 20 of the tufting gripper 16. Because the tip 33 lies in the pocket 26 and is covered by the arcuate portion 32, it is ensured that none of the loops 14 can get into any gap between the edge 27 and the insert 25.
  • the spring means 34 may be formed by a separate component which is attached to the edge 27 of the pocket 26 or disposed in a corresponding recess.
  • the cohesive connection can be limited to parts or sections of the insert 25 or occupy the entire edge 27. In the former case results in an increased elasticity compared to tufting tools with full-surface cohesively connected Ei arrangementsn.
  • the tufting tools according to the invention can respond better to acting transverse forces, which originate for example from the cutting blade 17 of the tufting needle 18 or the loops 14.
  • the insert 25 with a spacer means 42 which creates a defined distance between the insert 25 and the edge 27 along the edge 27 of the pocket 26 or at selected locations thereof.
  • a spacer means 42 are, for example, nubs 43, 44 which are formed on the outer periphery of the insert 25.
  • Such knobs or ribs or other protrusions are preferably just as high as the adhesive or soldering gap to be thick. It is, for example, a few tenths of a millimeter.
  • the insert 25 provided there consists of a body of uniform material, which is provided with a coating 45, 46 at its two flat sides 40, 41 facing away from each other.
  • These coatings 45, 46 are preferably of different nature.
  • the coating 45 may be a layer of hard material that also extends around the cutting edge 28, while the coating 46 may include, for example, a soft friction-reducing coating is.
  • the coating 45 cooperates with the cutting blade 17, while the coating 46 cooperates with the needle and this damage as possible not abrasive.
  • the main body of the insert 25 may consist of a hard material, which carries only the coating 46.
  • the coating 45 can be omitted in this case.
  • the insert 25 may be made of a soft, low abrasive material provided with the coating 45. In this case, the coating 46 can be omitted.
  • FIG. 7 Another modification shows FIG. 7 , This is based on the fact that the pocket 26 has a bottom 47. On the opposite side of the tufting gripper 16, a further pocket 48 may be provided. This can be formed with the bag 26 same contour or with a different contour. It has its own insert 49.
  • the inserts 25, 49 may each be provided, as has been explained above, with suitable spring means firmly clamping the inserts 25, 49 in a desired joining position. It is also possible for the two inserts 25, 49, which are formed separately from one another, to be held in their joining position by a single spring means 34.
  • the gripper body 19 has a corresponding recess in which the spring means 34 is held and on both inserts 25, 49 can exert a spring force.
  • FIGS. 8 to 11 illustrate. These each represent a horizontal section in the region of the tip 33 of the insert 25.
  • FIG. 8 illustrates that at the edge 27, a small projection 50 may be formed, which secures the tip 37 also laterally positively. In this case, it is possible to dispense with a cohesive securing of the insert 25. This is true even if the edge is 27, as is FIG. 9 illustrated, is arranged inclined or against the transverse direction Q.
  • FIG. 10 illustrates the undercut-free formation of the edge 27, ie the orientation thereof in the transverse direction Q, wherein an adhesive 51 or a solder provided between the bottom 47 of the pocket 26 and the insert 25 takes over the permanent lateral fixation of the insert 25.
  • FIGS. 11 and 12 demonstrate.
  • the edge 27 in the portion 32, or at other suitable portions may deviate from the transversely straight shape, or may have protrusions 50, 52, as it does FIG. 12 shows.
  • a tufting gripper 16 has a pocket 26 with an insert 25 to which a spring means 34 is associated to at least temporarily clamp it in the pocket at a predetermined position and secure.
  • the spring means 34 preferably pushes the insert 25 in the direction of the hook tip, where it produces a particularly smooth transition between the base body 19 of the tufting gripper 16 and the insert 25, in particular its tip 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Manipulator (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Scissors And Nippers (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
EP10171111.7A 2010-07-28 2010-07-28 Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes Not-in-force EP2412859B9 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PT101711117T PT2412859E (pt) 2010-07-28 2010-07-28 Pinça de tufos com assento apoiado por mola de uma peça intercalada
EP10171111.7A EP2412859B9 (de) 2010-07-28 2010-07-28 Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes
US13/167,245 US8302546B2 (en) 2010-07-28 2011-06-23 Tufting gripper with spring-biased support of an insert
KR1020110071712A KR101296100B1 (ko) 2010-07-28 2011-07-20 인서트의 스프링 편향된 지지부를 갖는 터프팅 파지기
CN201110211648.XA CN102345215B (zh) 2010-07-28 2011-07-27 带有刀片弹簧偏置式支撑的簇绒夹纱器
JP2011164862A JP5897276B2 (ja) 2010-07-28 2011-07-27 インサートをバネ付勢により支持するタフティング・グリッパ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171111.7A EP2412859B9 (de) 2010-07-28 2010-07-28 Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes

Publications (3)

Publication Number Publication Date
EP2412859A1 EP2412859A1 (de) 2012-02-01
EP2412859B1 EP2412859B1 (de) 2013-01-23
EP2412859B9 true EP2412859B9 (de) 2013-06-19

Family

ID=43447097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171111.7A Not-in-force EP2412859B9 (de) 2010-07-28 2010-07-28 Tufting-Greifer mit federnd unterstützter Lagerung eines Einsatzes

Country Status (6)

Country Link
US (1) US8302546B2 (pt)
EP (1) EP2412859B9 (pt)
JP (1) JP5897276B2 (pt)
KR (1) KR101296100B1 (pt)
CN (1) CN102345215B (pt)
PT (1) PT2412859E (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102801B4 (de) * 2014-03-03 2015-11-05 Groz-Beckert Kg Profilierter Schlingengreifer
DE102015101495B4 (de) * 2015-02-03 2016-08-25 Groz-Beckert Kg Schlingengreifer mit Rückhalteelement
EP3406781B1 (de) * 2017-05-22 2026-02-18 Groz-Beckert KG Greifer für eine tuftingmaschine
WO2021091451A1 (en) * 2019-11-07 2021-05-14 Iro Aktiebolag Tufting tool with insert
USD1056680S1 (en) 2021-02-16 2025-01-07 Card-Monroe Corp. Gauge module
US11585029B2 (en) 2021-02-16 2023-02-21 Card-Monroe Corp. Tufting maching and method of tufting

Family Cites Families (18)

* 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
GB1011371A (en) * 1963-05-03 1965-11-24 Lees & Sons Co James Improvements in method for tufting pile fabrics
GB932625A (en) * 1961-02-23 1963-07-31 Singer Cobble Ltd Improvements relating to tufting machines
US3138126A (en) 1961-04-13 1964-06-23 Singer Co Apparatus for tufting high and low cut pile
US3096734A (en) * 1961-05-31 1963-07-09 Singer Cobble Inc Cut pile tufting machine
JPS541155A (en) * 1977-06-02 1979-01-06 Yoshio Yamamoto Topper in tufting machine
JPS59179861A (ja) * 1983-03-31 1984-10-12 仲　行雄 タフテイング機用ル−パ
US4522132A (en) * 1984-02-27 1985-06-11 Spencer Wright Industries, Inc. Cut/loop hook for tufting machines
JPS61183994U (pt) * 1985-05-02 1986-11-17
US4602576A (en) * 1985-11-08 1986-07-29 Cox Ronnie L Tufting machine hook
ATE178959T1 (de) * 1990-12-11 1999-04-15 Tapistron Int Inc Tuftingmaschine
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
DE202004004401U1 (de) * 2004-03-20 2004-05-19 Groz-Beckert Kg Geprägte Tuftingnadel
EP1826306B1 (de) * 2006-02-24 2018-01-24 Groz-Beckert KG Greifereinrichtung für eine Tuftingmaschine
EP1908871B1 (de) * 2006-10-06 2019-08-07 Groz-Beckert KG Greifer für Tuftingmaschine
US8082862B2 (en) * 2007-02-01 2011-12-27 Groz-Beckert Kg Gripper for a tufting machine
EP1953289A1 (de) * 2007-02-01 2008-08-06 Groz-Beckert KG Greifer für Tuftingmaschine

Also Published As

Publication number Publication date
JP5897276B2 (ja) 2016-03-30
EP2412859B1 (de) 2013-01-23
CN102345215A (zh) 2012-02-08
KR101296100B1 (ko) 2013-08-19
EP2412859A1 (de) 2012-02-01
KR20120011325A (ko) 2012-02-07
US8302546B2 (en) 2012-11-06
CN102345215B (zh) 2014-06-18
JP2012031562A (ja) 2012-02-16
PT2412859E (pt) 2013-03-18
US20120024209A1 (en) 2012-02-02

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