EP1826306A1 - Dispositif boucleur pour machine à tufter - Google Patents

Dispositif boucleur pour machine à tufter Download PDF

Info

Publication number
EP1826306A1
EP1826306A1 EP06003768A EP06003768A EP1826306A1 EP 1826306 A1 EP1826306 A1 EP 1826306A1 EP 06003768 A EP06003768 A EP 06003768A EP 06003768 A EP06003768 A EP 06003768A EP 1826306 A1 EP1826306 A1 EP 1826306A1
Authority
EP
European Patent Office
Prior art keywords
gripper
counter knife
edge
knife element
cutting edge
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.)
Granted
Application number
EP06003768A
Other languages
German (de)
English (en)
Other versions
EP1826306B1 (fr
Inventor
Hillenbrand Bernd
Werner Moser Hans
Maute Andrea
Wäschle Roland
Kaas Timo
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 EP06003768.6A priority Critical patent/EP1826306B1/fr
Priority to CN2007100053920A priority patent/CN101029438B/zh
Priority to KR1020070017929A priority patent/KR101293067B1/ko
Priority to JP2007042021A priority patent/JP4528794B2/ja
Priority to US11/709,779 priority patent/US7520229B2/en
Publication of EP1826306A1 publication Critical patent/EP1826306A1/fr
Application granted granted Critical
Publication of EP1826306B1 publication Critical patent/EP1826306B1/fr
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
    • D05C15/24—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
    • 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

Definitions

  • the invention relates to a gripper device for a tufting machine, in particular for the production of carpets with cutting edge.
  • Tufting processes are often used for carpet production.
  • a sheet-like carrier material (a so-called backing) is provided with a pile.
  • the pile consists of a large number of individual threads, which are stabbed in rows by tufting needles through the backing.
  • the backing stitch by stitch is gradually moved under a row of needles.
  • the resulting loops are temporarily by a arranged on the opposite side gripper held and sliced in time to the movement of the backing with a knife. It then creates a Schneidflor, which is also referred to as velor.
  • the gripper device cooperates on the one hand with the tufting needles and on the other hand with the knives.
  • the grippers touch the tufting needles with their tips. Due to the relatively high pressure exerted by the knives on the grippers, the grippers are pressed against the needles. The needles wear out relatively quickly. Therefore, the hook tip should not be too hard but still have good wear properties.
  • the cut edges and cut surfaces provided on the gripper device also wear relatively quickly due to the friction with the knife during the shearing movement.
  • the blades run at high pressure and obliquely over the cutting edges of the gripper devices, which demands a high edge strength and high hardness of the gripper devices.
  • grippers made of HSS High Speed Steel
  • HSS High Speed Steel
  • grippers lead to rapid needle wear.
  • Such grippers can be adjusted badly on the tufting machine.
  • the precise material properties of the gripper body can be influenced by the thermal load during soldering of carbide cutters or the gripper body can be distorted. It is difficult to maintain the desired precision.
  • the gripper device has a gripper with at least one first gripper section, on which a gripper edge for receiving loops is provided.
  • the gripper is associated with a counter knife element having a cutting edge and is adapted to take over the loops of the gripper element.
  • the counter knife element carries or holds the gripper.
  • the counter knife element in turn is held, for example, in a module block and provided with a connecting means for mounting the gripper.
  • the connecting means may for example be formed by a longitudinally extending groove into which the gripper is inserted.
  • the gripper can be secured immovably in the groove, for example by form-fitting elements or by clamping action or by other measures.
  • both can be cast together in a module block.
  • Gripper and counter knife element can be soldered, welded, glued, caulked or otherwise connected.
  • the connection point can be arranged at a distance from the gripper section and the cutting edge.
  • the cutting edge bearing cutting extension and the gripper portion are with their flat sides with or without bias to each other.
  • the gripper may be formed of a tough but not too hard material that will wear little in contact with the tufting needles and will also wear out the tufting needles.
  • the gripper can be made of a not too hard, slightly flexible steel.
  • the counter knife element can be formed from a particularly wear-resistant, hard material, e.g. HSS, to wear little in contact with the knives.
  • the counter knife element By the counter knife element carries the gripper, ensures good alignment of the gripper and counter knife relative to each other.
  • the counter knife element can be mounted directly in a module block and thus have a good alignment with respect to the blades.
  • the grippers can, if they are reasonably flexible, align themselves with the tufting needles.
  • the gripper edge and the cutting edge are preferably straight. However, they can, if necessary, also be provided with a certain curvature. Preferably, they connect steplessly to each other. This allows the undisturbed transition of loops from the gripper edge to the cutting edge.
  • the gripper edge and the cutting edge are preferably aligned parallel to each other, wherein they are preferably formed adjacent to each other. It will be obtained while slicing the slings same length leg, so that there is a smooth uniform Schneidflor.
  • the gripper is preferably provided with a hook at its end. This prevents slippage of the loops during the return stroke of the gripper, which is required after loop reception, to allow the re-piercing of the tufting needles through the backing.
  • the gripper is preferably provided at its end with a shaft which is received by a recess of the counter knife element.
  • the recess may, as mentioned, be a groove in which the gripper is immovably mounted.
  • the gripper device is set up exclusively for the production of Schneidflor.
  • FIG. 1 illustrates a gripper module 1 for a tufting machine, which includes gripper devices 2.
  • Each gripper device 2 comprises a gripper 3 and a counter knife element 4.
  • the gripper devices 2 cooperate with tufting needles, of which a tufting needle 5 is illustrated.
  • the counter knife elements 4 cooperate with knives, of which a knife 6 is illustrated.
  • the gripper devices 2 are held in the gripper module 1 congruent and parallel to each other.
  • the gripper module 1 has a body 7 which, at its upper side, has deep grooves 8, 9, 10 in which the gripper devices 2 sit next to each other.
  • For stationary securing the same in the body 7 serve through holes 11, 12 which are formed in the body 7 and enforce the counter blade elements 4.
  • the holes 11, 12 take on not illustrated bolts.
  • Figures 3 and 4 illustrate the counter knife element 4 and the gripper 3 separately. Dotted lines on the gripper 3 and the counter knife element 4 formed and mutually associated structures are related to each other to indicate how the gripper 3 and the counter blade element 4 match.
  • the gripper 3 has a first gripper section 13, on which a straight gripper edge 14 is formed.
  • the gripper portion 13 is formed in the form of a flat lamination. It runs at its free end 15 in a hook 16, which extends as a projection of the gripper edge 14 away.
  • the gripper edge 14 is straight and rounded in the longitudinal direction. In particular, it is not sharp, so that it does not hurt a recorded loop if possible.
  • the gripper 3 From the gripper edge 14, two flat sides, which end at a straight back 17 extend.
  • the back 17 extends away from the hook 16 as a flat surface.
  • the gripper 3 On the flat side facing the counter knife element 4, the gripper 3 has a step 18, which serves to receive a knife extension 19 formed on the counter knife element 4.
  • the step 18 may preferably be arranged in the front third of the gripper edge 14.
  • the front third is disposed adjacent to the hook 16.
  • the step 18 extends over the entire height of the side facing away from the viewer in Figure 4 flat side, which is otherwise substantially flat. Likewise just is the opposite, the viewer facing flat side.
  • a shaft 20 connects, which has a substantially rectangular cross-section.
  • the gripper edge 14 merges into the shaft 20 at a step 21.
  • Cutouts 22, 23 provided on the back 17 can serve to fix the gripper 3 in the counterblade element 4.
  • the counter knife element 4 has a flat, rectangular in outline body, the knife extension 19 has on its front, in FIG. 3, the right narrow edge.
  • the flat body is provided with a rectangular cross-section groove 24 whose cross section corresponds to the cross section of the shaft 20 of the gripper 3, so that it can be received by the groove 24.
  • the groove is bounded by two flanks 25, 26, wherein the upper flank 26 is formed by an edge. This ends shortly before the blade extension 19 in a step 27.
  • This stage 27 is formed on the back 17 Assigned to level 28.
  • the steps are matched in height and arrangement to one another such that, when the gripper 3 and the counter knife element 4 are joined together, a smooth surface results at the top of the gripper module 1. This can be seen in particular from FIG.
  • the back 17 of the gripper 3 merges with the steps 27, 28 in a back 29 of the counter knife element 4.
  • two in recesses 30, 31 of the counter knife element 4 inserted strips 32, 33 can be seen from Figure 2, which secure the gripper 3 axially immovable.
  • the blade extension 19 with its front, preferably flat end face 34 smoothly adjoins the step 18. Loops can slide without being pressed against the end face 34 from the gripper edge 14 of the gripper portion 13 on the blade extension 19 slide.
  • This has on its underside a cutting edge 35 which is disposed approximately at the same height as the gripper edge 14.
  • the height of the gripper section 13 to be measured between the gripper edge 14 and the back 17 essentially corresponds to the height of the knife extension 19 to be measured in the same direction, ie the distance between the cutting edge 35 and the back 29.
  • the cutting edge 35 is formed sharp at least in the transition to the adjacent flat side in order to cut the recorded loop can.
  • the cutting edge 35 two-thirds of the length of the gripper portion 14 occupy. Thereby, a contact of the knife 6 with the gripper edge 14 of the gripper portion 13 can be avoided.
  • a guide portion 36 is arranged adjacent to the blade extension 19 on the counter blade element 4, which tapers toward the bottom in a wedge shape and can serve to guide the knife 6.
  • a gripping device has a gripper 3 and a counter knife element 4, which are manufactured separately and joined together.
  • the gripper module 1 receives the counter knife element 4, which in turn carries the gripper 3. Both parts can be made by caulking, gluing, riveting, Screw or similar measures connected to each other or be cast together in the gripper module 1.
  • the counter knife element may comprise the rear two-thirds of the cut surface 35 of the gripper edge 14.
  • the cut surface 35 of the counter knife element 4 merges into the gripper edge 14 of the gripper 3 at the same height.
  • the transitions are made by slants or overlaps so that the loop does not catch and filaments of the yarn do not get caught.
  • the cutting process is carried out exclusively between the counter knife element 4 and the knife 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP06003768.6A 2006-02-24 2006-02-24 Dispositif boucleur pour machine à tufter Not-in-force EP1826306B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06003768.6A EP1826306B1 (fr) 2006-02-24 2006-02-24 Dispositif boucleur pour machine à tufter
CN2007100053920A CN101029438B (zh) 2006-02-24 2007-02-16 用于簇绒机的夹持装置
KR1020070017929A KR101293067B1 (ko) 2006-02-24 2007-02-22 터프팅 기계용 파지기 장치
JP2007042021A JP4528794B2 (ja) 2006-02-24 2007-02-22 タフティング機用のグリッパ装置
US11/709,779 US7520229B2 (en) 2006-02-24 2007-02-23 Gripper device for a tufting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06003768.6A EP1826306B1 (fr) 2006-02-24 2006-02-24 Dispositif boucleur pour machine à tufter

Publications (2)

Publication Number Publication Date
EP1826306A1 true EP1826306A1 (fr) 2007-08-29
EP1826306B1 EP1826306B1 (fr) 2018-01-24

Family

ID=36658671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06003768.6A Not-in-force EP1826306B1 (fr) 2006-02-24 2006-02-24 Dispositif boucleur pour machine à tufter

Country Status (5)

Country Link
US (1) US7520229B2 (fr)
EP (1) EP1826306B1 (fr)
JP (1) JP4528794B2 (fr)
KR (1) KR101293067B1 (fr)
CN (1) CN101029438B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412860A1 (fr) 2010-07-28 2012-02-01 Groz-Beckert KG Crochet avec un corps à double insert

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412859B9 (fr) * 2010-07-28 2013-06-19 Groz-Beckert KG Crochet de tuftage avec support élastique d'un insert
KR102354463B1 (ko) 2015-01-09 2022-01-24 삼성전자주식회사 레트로그레이드 채널을 갖는 반도체 소자 및 그 제조방법
DE102015101495B4 (de) * 2015-02-03 2016-08-25 Groz-Beckert Kg Schlingengreifer mit Rückhalteelement
EP3540110B1 (fr) * 2018-03-15 2021-10-13 Groz-Beckert KG Dispositif de manipulation de boucleur, unité et procédé de manipulation de modules de boucleur
GB2579339B (en) * 2018-10-04 2021-07-07 Vandewiele Nv A hook for a tufting machine
JP2023501106A (ja) * 2019-10-29 2023-01-18 ヴァンドヴィル・スウェーデン・アクチエボラグ タフティングツールモジュール
US11585029B2 (en) * 2021-02-16 2023-02-21 Card-Monroe Corp. Tufting maching and method of tufting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800096A (en) * 1954-07-14 1957-07-23 American Safety Razor Corp Tufter hook
EP0200810A1 (fr) * 1985-05-02 1986-11-12 Asahi Trading Co., Ltd. Boucleur pour machine à tufter
WO2001029302A1 (fr) * 1999-10-20 2001-04-26 Spencer Wright Industries, Inc. Elements de coupe de machine a tufter pour velours coupe

Family Cites Families (11)

* 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
US3735715A (en) * 1972-01-24 1973-05-29 W Passons Apparatus for tufting uniform cut pile
JPS541155A (en) * 1977-06-02 1979-01-06 Yoshio Yamamoto Topper in tufting machine
DE3303206C2 (de) * 1982-02-12 1985-07-04 Haniisuchiiru Co. Ltd., Osaka Tuftingmaschine
US4509439A (en) * 1983-09-30 1985-04-09 Tuftco Corporation Clamp insert for tufting elements in narrow gauge tufting machine
US4522132A (en) * 1984-02-27 1985-06-11 Spencer Wright Industries, Inc. Cut/loop hook for tufting machines
US4557209A (en) * 1984-07-13 1985-12-10 Tuftco Corporation Sculptured high-low cut pile tufting method and apparatus
JPS6147096U (ja) * 1984-08-30 1986-03-29 京セラ株式会社 一枚刃ル−パ−
DE4435723C2 (de) * 1994-10-06 1996-08-08 Zimmermann Jos Gmbh & Co Kg Tuftingverfahren sowie zur Ausführung dieses Verfahrens geeignete Tuftingvorrichtung
GB9924840D0 (en) * 1999-10-20 1999-12-22 Cobble Blackburn Ltd Cut pile tufting machine cutting elements
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800096A (en) * 1954-07-14 1957-07-23 American Safety Razor Corp Tufter hook
EP0200810A1 (fr) * 1985-05-02 1986-11-12 Asahi Trading Co., Ltd. Boucleur pour machine à tufter
WO2001029302A1 (fr) * 1999-10-20 2001-04-26 Spencer Wright Industries, Inc. Elements de coupe de machine a tufter pour velours coupe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412860A1 (fr) 2010-07-28 2012-02-01 Groz-Beckert KG Crochet avec un corps à double insert

Also Published As

Publication number Publication date
JP4528794B2 (ja) 2010-08-18
CN101029438A (zh) 2007-09-05
KR101293067B1 (ko) 2013-08-05
EP1826306B1 (fr) 2018-01-24
KR20070088367A (ko) 2007-08-29
US7520229B2 (en) 2009-04-21
US20070199489A1 (en) 2007-08-30
JP2007224492A (ja) 2007-09-06
CN101029438B (zh) 2011-07-20

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