EP1826306B1 - Looper device for a tufting machine - Google Patents

Looper device for a tufting machine Download PDF

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Publication number
EP1826306B1
EP1826306B1 EP06003768.6A EP06003768A EP1826306B1 EP 1826306 B1 EP1826306 B1 EP 1826306B1 EP 06003768 A EP06003768 A EP 06003768A EP 1826306 B1 EP1826306 B1 EP 1826306B1
Authority
EP
European Patent Office
Prior art keywords
gripper
counter
knife element
looper device
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.)
Not-in-force
Application number
EP06003768.6A
Other languages
German (de)
French (fr)
Other versions
EP1826306A1 (en
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/en
Priority to CN2007100053920A priority patent/CN101029438B/en
Priority to KR1020070017929A priority patent/KR101293067B1/en
Priority to JP2007042021A priority patent/JP4528794B2/en
Priority to US11/709,779 priority patent/US7520229B2/en
Publication of EP1826306A1 publication Critical patent/EP1826306A1/en
Application granted granted Critical
Publication of EP1826306B1 publication Critical patent/EP1826306B1/en
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 arranged by on the opposite side, for example, from US 2,800,096 held known gripper temporarily and cut in time with the movement of the backing by means of knives, which are received by the grippers. It then creates a Schneidflor, which is also referred to as velor.
  • a tufting gripper known which cooperates with a flexible knife.
  • the Knife bears under spring bias on the gripper flank and slides along it.
  • 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 knives run at high pressure and obliquely over the cutting edges of the gripper devices, which requires the gripper devices to have high edge strength and high hardness.
  • 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 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.
  • FIGS. 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 in FIG. 4 facing away from the viewer flat side, which is otherwise essentially 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, which at its front, in FIG. 3 right narrow edge has the blade extension 19.
  • 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 is especially out FIG. 2 seen.
  • the back 17 of the gripper 3 merges with the steps 27, 28 in a back 29 of the counter knife element 4. Besides, are off FIG. 2 two in recesses 30, 31 of the counter knife element 4 inserted strips 32, 33 can be seen, 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.
  • the gripper module 1 described so far operates as follows:
  • a backing 37 is guided in the direction indicated by an arrow 38 transport direction.
  • the backing 37 can be guided, as illustrated, at a distance above the gripper module 1 or also at this fitting.
  • the tufting needles 5, which are held in a bar take with their eye 39 each a pile 40 and pierce this through the backing.
  • the gripper module 1 held on a bar 41 is moved so that the gripper 3 with its gripper section 13 dips in between the tufting needle 5 and the pile threading thread which is exciting to the backing 37.
  • the direction of movement of the bar 41 is indicated by an arrow 42.
  • the hook 16 prevents the recorded loop slides on the return stroke of the tufting needle 5 of the gripper portion 13. Rather, the noose, like FIG. 6 shown by the loop 43, held on the gripper portion 13.
  • FIG. 6 shows further, as are held by the knife 6 now held by the gripper device 2 loops.
  • the knife 6 cooperates with the counter knife element 4 by cutting the loops or stitches which have been brought onto the counter knife element 4 by the continuous picking up of loops and the continued movement of the backing 37. The cut takes place by interaction of the cutting edge of the knife 6 with the cutting edge 35 of the counter knife element 4th
  • the gripper 3 cooperates with the tufting needle 5 while the counter knife element 4 cooperates with the knife 6.
  • the gripper 3 and the counter knife element 4 can each be optimized in terms of their choice of material.
  • the gripper 3 and the counter knife element 4 may be made of different steels with different material composition or treatment. This minimizes needle wear and knife and counter knife wear on the one hand.
  • a precise operation of the gripper device 2 and a precise interaction with the tufting needle 5 and the knife 6 is made possible.
  • the aligned alignment of the gripper edge 14 and the cutting edge 35 to each other ensures a safe and undisturbed loop transport from the gripper 3 on the counter blade element. 4
  • 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.

Description

Die Erfindung betrifft eine Greifereinrichtung für eine Tuftingmaschine, insbesondere zur Herstellung von Teppichen mit Schneidflor.The invention relates to a gripper device for a tufting machine, in particular for the production of carpets with cutting edge.

Zur Teppichherstellung dienen häufig Tuftingverfahren. Bei diesen wird ein flächenhaftes Trägermaterial (ein so genanntes Backing) mit einem Flor versehen. Der Flor besteht aus einer großen Anzahl einzelner Fäden, die mittels Tuftingnadeln reihenweise durch das Backing gestochen werden. Dabei wird das Backing Stich für Stich allmählich unter einer Nadelreihe fortbewegt. Die so entstehenden Schlingen werden durch an der Gegenseite angeordnete zum Beispiel aus der US 2 800 096 bekannten Greifer zeitweilig gehalten und im Takt der Fortbewegung des Backings mittels Messer aufgeschnitten, die von den Greifern aufgenommen sind. Es entsteht dann ein Schneidflor, der auch als Velours bezeichnet wird.Tufting processes are often used for carpet production. In these, 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 arranged by on the opposite side, for example, from US 2,800,096 held known gripper temporarily and cut in time with the movement of the backing by means of knives, which are received by the grippers. It then creates a Schneidflor, which is also referred to as velor.

Weiter ist aus der WO 01/29302 A1 ein Tufting-Greifer bekannt der mit einem flexiblen Messer zusammenwirkt. Das Messer liegt unter federnder Vorspannung an der Greiferflanke an und gleitet an dieser entlang.Next is from the WO 01/29302 A1 a tufting gripper known which cooperates with a flexible knife. The Knife bears under spring bias on the gripper flank and slides along it.

Somit wirkt die Greifereinrichtung einerseits mit den Tuftingnadeln und andererseits mit den Messern zusammen. Während der Schlingenaufnahme berühren die Greifer mit ihren Spitzen die Tuftingnadeln. Durch den relativ hohen Anpressdruck, den die Messer auf die Greifer ausüben, werden die Greifer an die Nadeln angedrückt. Die Nadeln verschleißen dabei relativ schnell. Deshalb soll die Greiferspitze nicht zu hart sein aber trotzdem gute Verschleißeigenschaften aufweisen.Thus, the gripper device cooperates on the one hand with the tufting needles and on the other hand with the knives. During the loop recording, 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.

Die an der Greifereinrichtung außerdem vorgesehenen Schnittkanten und Schnittflächen verschleißen durch die Reibung mit dem Messer während der Scherbewegung relativ schnell. Die Messer laufen mit hohem Druck und schräg über die Schneidkanten der Greifereinrichtungen, was den Greifereinrichtungen eine hohe Kantenfestigkeit und große Härte abverlangt.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 knives run at high pressure and obliquely over the cutting edges of the gripper devices, which requires the gripper devices to have high edge strength and high hardness.

Aus der Praxis ist es bekannt, Greifer aus HSS (High Speed Steel) auszubilden. Solche Greifer führen aber zu einem schnellen Nadelverschleiß.From practice it is known to form grippers made of HSS (High Speed Steel). However, such grippers lead to rapid needle wear.

Des Weiteren ist aus der EP 0 200 810 A1 bekannt, aus relativ weichem Material ausgebildete Greifer mit eingelöteten Hartmetalleinsätzen für die Schneide zu versehen. Solche Greifer lassen sich auf der Tuftingmaschine schlecht justieren. Des Weiteren können die präzisen Materialeigenschaften des Greiferkörpers durch die thermische Belastung beim Einlöten von Hartmetallschneiden beeinflusst oder der Greiferkörper verzogen werden. Es ist schwierig, die gewünschte Präzision aufrecht zu erhalten. Außerdem kann es zu Haarrissen in den Hartmetallkörpern kommen.Furthermore, from the EP 0 200 810 A1 known to provide grippers formed of relatively soft material with soldered carbide inserts for the cutting edge. Such grippers can be adjusted badly on the tufting machine. Furthermore, the precise material properties of the gripper body can be influenced by the thermal stress during soldering of carbide cutters or the gripper body be warped. It is difficult to maintain the desired precision. In addition, there may be hairline cracks in the hard metal bodies.

Bestehen die Greifer hingegen lediglich aus einem einzigen, einheitlichen Material, ist ein Kompromiss hinsichtlich der Verschleißeigenschaften einerseits im Zusammenwirken mit der Tuftingnadel und andererseits im Zusammenwirken mit dem Messer kaum zu finden.Conversely, if the grippers consist only of a single, unified material, a compromise in terms of wear properties on the one hand in interaction with the tufting needle and on the other hand in cooperation with the knife is hardly to be found.

Davon ausgehend ist es Aufgabe der Erfindung, die Greifereinrichtung zu verbessern.On this basis, it is an object of the invention to improve the gripper device.

Diese Aufgabe wird mit der Greifereinrichtung nach Anspruch 1 gelöst:This object is achieved with the gripper device according to claim 1:

Die erfindungsgemäße Greifereinrichtung weist einen Greifer mit zumindest einem ersten Greiferabschnitt auf, an dem eine Greiferkante zur Aufnahme von Schlingen vorgesehen ist. Dem Greifer ist ein Gegenmesserelement zugeordnet, das eine Schneidkante aufweist und zur Übernahme der Schlingen von dem Greiferelement eingerichtet ist. Das Gegenmesserelement trägt oder hält den Greifer. Dazu ist das Gegenmesserelement seinerseits beispielsweise in einem Modulblock gehalten und mit einem Verbindungsmittel zur Lagerung des Greifers versehen. Das Verbindungsmittel kann beispielsweise durch eine längs durchgehende Nut gebildet sein, in die der Greifer eingelegt ist. Der Greifer kann in der Nut beispielsweise durch Formschlusselemente oder durch Klemmwirkung oder durch andere Maßnahmen unverschiebbar gesichert sein.The gripper device according to the invention 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. For this purpose, 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.

Zur Verbindung des Greifers mit dem Gegenmesserelement können beide gemeinsam in einen Modulblock eingegossen sein. Greifer und Gegenmesserelement können miteinander verlötet, verschweißt, verklebt, verstemmt oder anderweitig verbunden sein. Ist die Verbindungstechnik mit einer thermischen Belastung des Materials von Greifer und/oder Gegenmesserelement verbunden, kann die Verbindungsstelle von dem Greiferabschnitt und der Schneidkante beabstandet angeordnet sein. Vorzugsweise liegen der die Schneidkante tragende Schneidfortsatz und der Greiferabschnitt mit ihren Flachseiten mit oder ohne Vorspannung aneinander an.To connect the gripper with the counter knife element, both can be cast together in a module block. Gripper and counter knife element can be soldered, welded, glued, caulked or otherwise connected. If the connection technique is associated with a thermal load on the material of the gripper and / or counter knife element, the connection point can be arranged at a distance from the gripper section and the cutting edge. Preferably, the cutting edge bearing cutting extension and the gripper portion are with their flat sides with or without bias to each other.

Durch die gesonderte Ausbildung von Greifer und Gegenmesserelement können beide hinsichtlich der Materialwahl sowie den nötigen Bearbeitungsvorgängen, wie Richten, Härten, Polieren usw., gesondert behandelt werden. Beispielsweise kann der Greifer aus einem zähen aber nicht zu harten Material ausgebildet sein, das im Kontakt mit den Tuftingnadeln wenig verschleißt und auch die Tuftingnadeln wenig verschleißt. Z.B. kann der Greifer aus einem nicht zu harten, etwas flexiblen Stahl ausgebildet sein. Hingegen kann das Gegenmesserelement aus einem besonders verschleißfesten, harten Material ausgebildet sein, z.B. HSS, um beim Kontakt mit den Messern wenig zu verschleißen.Due to the separate design of gripper and counter blade element both can be treated separately with regard to the choice of material and the necessary machining operations, such as straightening, hardening, polishing, etc. For example, 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. For example, The gripper can be made of a not too hard, slightly flexible steel. On the other hand, 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.

Indem das Gegenmesserelement den Greifer trägt, ist für eine gute Ausrichtung von Greifer und Gegenmesser relativ zueinander gesorgt. Das Gegenmesserelement kann unmittelbar in einem Modulblock gelagert sein und somit eine gute Ausrichtung in Bezug auf die Messer aufweisen. Die Greifer können sich, wenn sie einigermaßen flexibel sind, an den Tuftingnadeln ausrichten.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.

Die Greiferkante und die Schneidkante sind vorzugsweise gerade ausgebildet. Sie können jedoch bedarfsweise auch mit einer gewissen Krümmung versehen sein. Vorzugsweise schließen sie stufenlos aneinander an. Dies ermöglicht den ungestörten Übergang von Schlingen von der Greiferkante auf die Schneidkante.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.

Die Greiferkante und die Schneidkante sind zueinander vorzugsweise parallel ausgerichtet, wobei sie vorzugsweise aneinander anschließend ausgebildet sind. Es werden dabei beim Aufschneiden der Schlingen gleich lange Schenkel erhalten, so dass sich ein glatter einheitlicher Schneidflor ergibt.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.

Der Greifer ist an seinem Ende vorzugsweise mit einem Haken versehen. Dieser verhindert ein Abrutschen der Schlingen beim Rückhub des Greifers, der nach Schlingenaufnahme erforderlich ist, um das erneute Durchstechen der Tuftingnadeln durch das Backing zu ermöglichen.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.

Der Greifer ist an seinem Ende vorzugsweise mit einem Schaft versehen, der von einer Ausnehmung des Gegenmesserelements aufgenommen ist. Die Ausnehmung kann, wie erwähnt, eine Nut sein, in der der Greifer unbeweglich gelagert ist. Damit ist die Greifereinrichtung ausschließlich zur Herstellung von Schneidflor eingerichtet.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. Thus, the gripper device is set up exclusively for the production of Schneidflor.

Weitere Einzelheiten vorteilhafter Ausführungsformen der Erfindung sind Gegenstand der Zeichnung, der Beschreibung oder von Unteransprüchen.Further details of advantageous embodiments of the invention are the subject of the drawing, the description or subclaims.

In der Zeichnung sind Ausführungsformen der Erfindung veranschaulicht. Es zeigen:

  • Figur 1 eine Greifereinrichtung mit einer Tuftingnadel und einem Messer in perspektivischer, schematisierter Darstellung,
  • Figur 2 die Greifereinrichtung nach Figur 1 in einer anderen perspektivischen Darstellung,
  • Figur 3 das Gegenmesserelement der Greifereinrichtung nach Figur 2 in perspektivischer Darstellung,
  • Figur 4 den Greifer der Greifereinrichtung nach Figur 2 in perspektivischer Darstellung,
  • Figur 5 die Greifereinrichtung nach Figur 1 und 2 beim Aufnehmen von einer Schlinge in schematisierter Seitenansicht,
  • Figur 6 die Greifereinrichtung nach Figur 5 in Rückhubposition nach dem Aufschneiden einer Schlinge in schematisierter Darstellung.
In the drawings, embodiments of the invention are illustrated. Show it:
  • FIG. 1 a gripper device with a tufting needle and a knife in a perspective, schematic representation,
  • FIG. 2 the gripper device after FIG. 1 in another perspective view,
  • FIG. 3 the counter knife element of the gripper device after FIG. 2 in perspective,
  • FIG. 4 the gripper of the gripper device after FIG. 2 in perspective,
  • FIG. 5 the gripper device after FIG. 1 and 2 when picking up a loop in a schematic side view,
  • FIG. 6 the gripper device after FIG. 5 in Rückhubposition after cutting a loop in a schematic representation.

In Figur 1 ist ein Greifermodul 1 für eine Tuftingmaschine veranschaulicht, zu dem Greifereinrichtungen 2 gehören. Jede Greifereinrichtung 2 umfasst einen Greifer 3 und ein Gegenmesserelement 4. Die Greifereinrichtungen 2 wirken mit Tuftingnadeln zusammen, von denen eine Tuftingnadel 5 veranschaulicht ist. Die Gegenmesserelemente 4 wirken mit Messern zusammen, von denen ein Messer 6 veranschaulicht ist. Die Greifereinrichtungen 2 sind in dem Greifermodul 1 deckungsgleich und parallel zueinander gehalten. Das Greifermodul 1 weist dazu einen Körper 7 auf, der an seiner Oberseite neben einander tiefe Nuten 8, 9, 10 aufweist, in denen die Greifereinrichtungen 2 sitzen. Zur ortsfesten Sicherung derselben in dem Körper 7 dienen Durchgangsbohrungen 11, 12, die in dem Körper 7 ausgebildet sind und die Gegenmesserelemente 4 durchsetzen. Die Bohrungen 11, 12 nehmen nicht weiter veranschaulichte Bolzen auf.In FIG. 1 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. For this purpose, 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.

Die Figuren 3 und 4 veranschaulichen das Gegenmesserelement 4 und den Greifer 3 gesondert. Durch gestrichelte Linien sind an dem Greifer 3 und dem Gegenmesserelement 4 ausgebildete und einander zugeordnete Strukturen in Bezug zueinander gesetzt, um anzudeuten, wie der Greifer 3 und das Gegenmesserelement 4 zusammenpassen.The FIGS. 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.

Der Greifer 3 weist einen ersten Greiferabschnitt 13 auf, an dem eine gerade Greiferkante 14 ausgebildet ist. Der Greiferabschnitt 13 ist in Form einer flachen Blechlamelle ausgebildet. Er läuft an seinem freien Ende 15 in einem Haken 16 aus, der sich als Vorsprung von der Greiferkante 14 weg erstreckt. Die Greiferkante 14 ist in Längsrichtung gerade und quer gerundet. Sie ist insbesondere nicht scharf, so dass sie eine aufgenommene Schlinge möglichst nicht verletzt.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.

Von der Greiferkante 14 erstrecken sich zwei Flachseiten, die an einem geraden Rücken 17 enden. Der Rücken 17 erstreckt sich von dem Haken 16 als ebene Fläche weg. An der dem Gegenmesserelement 4 zugewandten Flachseite weist der Greifer 3 eine Stufe 18 auf, die der Aufnahme eines an dem Gegenmesserelement 4 ausgebildeten Messerfortsatzes 19 dient. Die Stufe 18 kann vorzugsweise im vorderen Drittel der Greiferkante 14 angeordnet sein. Das vordere Drittel ist in Nachbarschaft des Hakens 16 angeordnet. Die Stufe 18 erstreckt sich dabei über die gesamte Höhe der in Figur 4 vom Betrachter abgewandten Flachseite, die ansonsten im Wesentlichen eben ist. Ebenso eben ist die gegenüber liegende, dem Betrachter zugewandte Flachseite.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. 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 in FIG. 4 facing away from the viewer flat side, which is otherwise essentially flat. Likewise just is the opposite, the viewer facing flat side.

An dem Greiferabschnitt 13 schließt sich ein Schaft 20 an, der einen im Wesentlichen rechteckigen Querschnitt aufweist. Die Greiferkante 14 geht an einer Stufe 21 in den Schaft 20 über. An dem Rücken 17 vorgesehene Ausschnitte 22, 23 können dazu dienen, den Greifer 3 in dem Gegenmesserelement 4 festzulegen.At the gripper portion 13, 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.

Das Gegenmesserelement 4 weist einen flachen, im Umriss rechteckigen Körper auf, der an seiner vorderen, in Figur 3 rechten schmalen Kante den Messerfortsatz 19 aufweist. Der flache Körper ist mit einer im Querschnitt rechteckigen Nut 24 versehen, deren Querschnitt dem Querschnitt des Schafts 20 des Greifers 3 entspricht, so dass dieser von der Nut 24 aufgenommen werden kann. Die Nut ist von zwei Flanken 25, 26 begrenzt, wobei die obere Flanke 26 von einem Rand gebildet wird. Dieser endet kurz vor dem Messerfortsatz 19 in einer Stufe 27. Dieser Stufe 27 ist eine an dem Rücken 17 ausgebildete Stufe 28 zugeordnet. Die Stufen sind in Höhe und Anordnung so aufeinander abgestimmt, dass sich, wenn der Greifer 3 und das Gegenmesserelement 4 zusammengefügt sind, an der Oberseite des Greifermoduls 1 eine glatte Fläche ergibt. Dies ist insbesondere aus Figur 2 ersichtlich. Der Rücken 17 des Greifers 3 geht an den Stufen 27, 28 in einen Rücken 29 des Gegenmesserelements 4 über. Außerdem sind aus Figur 2 zwei in Ausnehmungen 30, 31 des Gegenmesserelements 4 eingelegte Leisten 32, 33 ersichtlich, die die Greifer 3 axial unverschiebbar sichern.The counter knife element 4 has a flat, rectangular in outline body, which at its front, in FIG. 3 right narrow edge has the blade extension 19. 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 is especially out FIG. 2 seen. The back 17 of the gripper 3 merges with the steps 27, 28 in a back 29 of the counter knife element 4. Besides, are off FIG. 2 two in recesses 30, 31 of the counter knife element 4 inserted strips 32, 33 can be seen, which secure the gripper 3 axially immovable.

Während die Stufen 27, 28 ineinander liegen und außen eine glatte Fläche bieten, schließt der Messerfortsatz 19 mit seiner vorderen, vorzugsweise ebenen Stirnfläche 34 glatt an die Stufe 18 an. Schlingen können ohne an der Stirnfläche 34 hängen zu bleiben von der Greiferkante 14 des Greiferabschnitts 13 auf den Messerfortsatz 19 gleiten. Dieser weist an seiner Unterseite eine Schneidkante 35 auf, die etwa auf gleicher Höhe wie die Greiferkante 14 angeordnet ist. Mit anderen Worten, die zwischen Greiferkante 14 und Rücken 17 zu messende Höhe des Greiferabschnitts 13 stimmt im Wesentlichen mit der in gleicher Richtung zu messenden Höhe des Messerfortsatzes 19, d.h. dem Abstand zwischen der Schneidkante 35 und dem Rücken 29 überein. Jedoch ist die Schneidkante 35 zumindest im Übergang zur benachbarten Flachseite scharf ausgebildet, um die aufgenommene Schlinge aufschneiden zu können. Vorzugsweise kann die Schneidkante 35 zwei Drittel der Länge des Greiferabschnitts 14 einnehmen. Dadurch kann eine Berührung des Messers 6 mit der Greiferkante 14 des Greiferabschnitts 13 vermieden werden.While the steps 27, 28 lie inside one another and on the outside provide a smooth surface, 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. In other words, 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. However, 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. Preferably, 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.

Unterhalb der Nut 24 ist in Nachbarschaft zu dem Messerfortsatz 19 an dem Gegenmesserelement 4 ein Führungsabschnitt 36 angeordnet, der nach unten hin keilförmig zuläuft und dazu dienen kann, Messer 6 zu führen.Below the groove 24, 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.

Das insoweit beschriebene Greifermodul 1 arbeitet wie folgt:The gripper module 1 described so far operates as follows:

Wie in Figur 5 veranschaulicht, wird beim Tuftingprozess oberhalb des Greifermoduls 1 ein Backing 37 in Richtung einer durch einen Pfeil 38 angedeuteten Transportrichtung geführt. Das Backing 37 kann dabei, wie veranschaulicht, im Abstand oberhalb des Greifermoduls 1 oder auch an diesem anliegend geführt sein. Die Tuftingnadeln 5, die in einer Barre gehalten sind, fassen mit ihrem Öhr 39 jeweils einen Florfaden 40 und stechen diesen durch das Backing. Ist dies geschehen, wird das an einer Barre 41 gehaltene Greifermodul 1 so bewegt, dass der Greifer 3 mit seinem Greiferabschnitt 13 zwischen der Tuftingnadel 5 und dem sich zum Backing 37 spannenden Florfaden eintaucht. Die Bewegungsrichtung der Barre 41 ist dabei durch einen Pfeil 42 angedeutet. Der Haken 16 verhindert, dass die aufgenommene Schlinge beim Rückhub der Tuftingnadel 5 von dem Greiferabschnitt 13 gleitet. Vielmehr bleibt die Schlinge, wie Figur 6 anhand der Schlinge 43 zeigt, auf dem Greiferabschnitt 13 gehalten. Figur 6 zeigt weiter, wie mittels des Messers 6 nun von der Greifereinrichtung 2 gehaltene Schlingen aufgeschnitten werden. Das Messer 6 wirkt dabei mit dem Gegenmesserelement 4 zusammen, indem es die durch die fortwährende Aufnahme von Schlingen und die fortgesetzte Bewegung des Backings 37 auf das Gegenmesserelement 4 gelangte Schlingen oder Maschen aufschneidet. Der Schnitt erfolgt dabei durch Zusammenwirkung der Schneidkante des Messers 6 mit der Schneidkante 35 des Gegenmesserelements 4.As in FIG. 5 illustrated, in the tufting process above the gripper module 1, a backing 37 is guided in the direction indicated by an arrow 38 transport direction. The backing 37 can be guided, as illustrated, at a distance above the gripper module 1 or also at this fitting. The tufting needles 5, which are held in a bar, take with their eye 39 each a pile 40 and pierce this through the backing. Once this is done, the gripper module 1 held on a bar 41 is moved so that the gripper 3 with its gripper section 13 dips in between the tufting needle 5 and the pile threading thread which is exciting to the backing 37. The direction of movement of the bar 41 is indicated by an arrow 42. The hook 16 prevents the recorded loop slides on the return stroke of the tufting needle 5 of the gripper portion 13. Rather, the noose, like FIG. 6 shown by the loop 43, held on the gripper portion 13. FIG. 6 shows further, as are held by the knife 6 now held by the gripper device 2 loops. The knife 6 cooperates with the counter knife element 4 by cutting the loops or stitches which have been brought onto the counter knife element 4 by the continuous picking up of loops and the continued movement of the backing 37. The cut takes place by interaction of the cutting edge of the knife 6 with the cutting edge 35 of the counter knife element 4th

Wie ersichtlich, kooperiert der Greifer 3 mit der Tuftingnadel 5 während das Gegenmesserelement 4 mit dem Messer 6 zusammenwirkt. Der Greifer 3 und das Gegenmesserelement 4 können hinsichtlich ihrer Materialwahl jeweils optimiert werden. Beispielsweise können der Greifer 3 und das Gegenmesserelement 4 aus unterschiedlichen Stählen mit unterschiedlicher Materialzusammensetzung oder Behandlung gefertigt sein. Damit lässt sich einerseits der Nadelverschleiß und andererseits der Messer- und Gegenmesserverschleiß minimieren. Außerdem wird eine präzise Arbeitsweise der Greifereinrichtung 2 und ein präzises Zusammenwirken mit der Tuftingnadel 5 und dem Messer 6 ermöglicht. Des Weiteren sorgt die fluchtende Ausrichtung der Greiferkante 14 und der Schneidkante 35 zueinander für einen sicheren und ungestörten Schlingentransport von dem Greifer 3 auf das Gegenmesserelement 4.As can be seen, the gripper 3 cooperates with the tufting needle 5 while the counter knife element 4 cooperates with the knife 6. The gripper 3 and the counter knife element 4 can each be optimized in terms of their choice of material. For example, the gripper 3 and the counter knife element 4 may be made of different steels with different material composition or treatment. This minimizes needle wear and knife and counter knife wear on the one hand. In addition, a precise operation of the gripper device 2 and a precise interaction with the tufting needle 5 and the knife 6 is made possible. Furthermore, the aligned alignment of the gripper edge 14 and the cutting edge 35 to each other ensures a safe and undisturbed loop transport from the gripper 3 on the counter blade element. 4

Bei der beschriebenen Ausführungsform wurde der Gedanke der Trennung der Greiferfunktion und der Schneidfunktion und Aufteilung dieser Funktionen auf den Greifer 3 und das Gegenmesserelement 4 anhand einer Greifereinrichtung 2 veranschaulicht, bei der der Greifer 3 und das Gegenmesserelement 4 in Bezug aufeinander unverstellbar oder unverschiebbar gelagert sind.In the described embodiment, the idea of separating the gripper function and the cutting function and distribution of these functions on the gripper 3 and the counter knife element 4 has been illustrated by means of a gripper device 2, in which the gripper 3 and the counter knife element 4 are stored immovable or immovable with respect to each other.

Eine erfindungsgemäße Greifeinrichtung weist einen Greifer 3 und ein Gegenmesserelement 4 auf, die gesondert hergestellt und zusammengefügt sind. Das Greifermodul 1 nimmt das Gegenmesserelement 4 auf, das seinerseits den Greifer 3 trägt. Beide Teile können durch Verstemmen, Kleben, Nieten, Verschrauben oder ähnliche Maßnahmen miteinander verbunden oder gemeinsam in dem Greifermodul 1 vergossen sein. Das Gegenmesserelement kann die hinteren beiden Drittel der Schnittfläche 35 der Greiferkante 14 umfassen. Die Schnittfläche 35 des Gegenmesserelements 4 geht in gleicher Höhe in die Greiferkante 14 des Greifers 3 über. Die Übergänge sind durch Schrägen oder Überlappungen so gestaltet, dass die Schlinge nicht hängenbleibt und Filamente des Garns nicht verhaken. Der Schnittvorgang wird ausschließlich zwischen dem Gegenmesserelement 4 und dem Messer 6 durchgeführt. Dadurch sind optimale Materialkombinationen möglich, welche beiden Verschleißarten einerseits zwischen dem Greifer 3 und der Tuftingnadel 5 und andererseits zwischen dem Messer 6 und dem Gegenmesserelement 4 gerecht werden. Die Präzision des Greifers 3 und des Gegenmesserelements 4 kann so ausgerichtet sein, dass Einrichtzeiten bei Maschinenumrüstungen verkürzt werden. Der Messerdruck wirkt nicht mehr direkt auf den Greifer 3 und somit auf die Nadel 5, was eine Verbesserung der Nadelstandzeit ergibt. Der Greifer 3 wird nicht mehr so stark ausgelenkt, was zu Ersparnissen an Rüstzeit und weniger Beschädigungen durch starkes Nachbiegen führt. Das Gegenmesserelement 4 und der Greifer 3 können separat ausgetauscht werden.A gripping device according to the invention 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. As a result, optimum combinations of materials are possible, which are suitable for both types of wear on the one hand between the gripper 3 and the tufting needle 5 and on the other hand between the knife 6 and the counter knife element 4. The precision of the gripper 3 and the counter knife element 4 can be aligned so that set-up times are shortened in machine conversions. The knife pressure no longer acts directly on the gripper 3 and thus on the needle 5, which results in an improvement in the needle life. The gripper 3 is no longer deflected so strongly, which leads to savings in set-up time and less damage due to heavy re-bending. The counter knife element 4 and the gripper 3 can be replaced separately.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Greifermodulgripper module
22
GreifereinrichtungGripper device
33
Greifergrab
44
GegenmesserelementCounter knife element
55
Tuftingnadeltufting
66
Messerknife
77
Körperbody
8, 9, 108, 9, 10
Nutengroove
11, 1211, 12
Bohrungendrilling
1313
Greiferabschnittgripper section
1414
Greiferkantegripper edge
1515
EndeThe End
1616
Haken ,Hook,
1717
Rückenmove
1818
Stufestep
1919
MesserfortsatzDiameter extension
2020
Schaftshaft
2121
Stufestep
22, 2322, 23
Ausschnittecutouts
2424
Nutgroove
25, 2625, 26
Flankenflanks
27, 2827, 28
Stufestep
2929
Rückenmove
30, 3130, 31
Ausnehmungenrecesses
32, 3332, 33
LeistenAfford
3434
Stirnflächeface
3535
Schneidkantecutting edge
3636
Führungsabschnitteguide sections
3737
BackingBacking
3838
Pfeilarrow
3939
Öhreyelet
4040
Florfadenpile yarn
4141
Barrebar
4242
Pfeilarrow
4343
Schlingeloop

Claims (12)

  1. Looper device (2) for a tufting machine, in particular for producing carpets with cut pile, with a gripper (3) which has at least one first gripper portion (13) with a gripper edge (14) for picking up loops, and with a counter-knife element (4) for taking the loops from the gripper element (3), wherein the counter-knife element (4) has a cutting edge (35) to which a knife (6) is assigned, characterised in that the counter-knife element (4) is provided with connecting means for mounting the gripper (3), and carries the gripper (3).
  2. Looper device according to claim 1, characterised in that the gripper edge (14) is formed straight.
  3. Looper device according to claim 1, characterised in that the cutting edge (35) is formed straight.
  4. Looper device according to claim 1, characterised in that the gripper edge (14) and the cutting edge (35) are oriented parallel to each other.
  5. Looper device according to claim 1, characterised in that the gripper edge (13) and the cutting edge (35) are formed adjacent to each other.
  6. Looper device according to claim 1, characterised in that the gripper (3) has a hook (16) at its end (15).
  7. Looper device according to claim 1, characterised in that the gripper (3) has a shank (20) which is received in a recess (24) of the counter-knife element (4).
  8. Looper device according to claim 7, characterised in that the recess (24) is a groove.
  9. Looper device according to claim 1, characterised in that the gripper (3) is mounted immovably on the counter-knife element (4).
  10. Looper device according to claim 1, characterised in that the gripper (3) lies with a flat side on the counter-knife element (4).
  11. Looper device according to claim 1, characterised in that the counter-knife element (4) has a blade extension (19) on which the cutting edge (35) is formed and on which the gripper (3) lies with its flat side.
  12. Looper device according to claim 1, characterised in that the counter-knife element (4) and the gripper (3) are made of different materials.
EP06003768.6A 2006-02-24 2006-02-24 Looper device for a tufting machine Not-in-force EP1826306B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06003768.6A EP1826306B1 (en) 2006-02-24 2006-02-24 Looper device for a tufting machine
CN2007100053920A CN101029438B (en) 2006-02-24 2007-02-16 Gripper device for a tufting machine
KR1020070017929A KR101293067B1 (en) 2006-02-24 2007-02-22 Gripper device for a tufting machine
JP2007042021A JP4528794B2 (en) 2006-02-24 2007-02-22 Gripper device for tufting machine
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 (en) 2006-02-24 2006-02-24 Looper device for a tufting machine

Publications (2)

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

Family

ID=36658671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06003768.6A Not-in-force EP1826306B1 (en) 2006-02-24 2006-02-24 Looper device for a tufting machine

Country Status (5)

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

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EP2412860A1 (en) 2010-07-28 2012-02-01 Groz-Beckert KG Looper with double insert body
KR102354463B1 (en) 2015-01-09 2022-01-24 삼성전자주식회사 Semiconducor devices having retrograde channels and methods for fabricating the same
DE102015101495B4 (en) * 2015-02-03 2016-08-25 Groz-Beckert Kg Loop grab with retaining element
EP3540110B1 (en) * 2018-03-15 2021-10-13 Groz-Beckert KG Loop taker handling device, handling unit and method for handling loop taker modules
GB2579339B (en) * 2018-10-04 2021-07-07 Vandewiele Nv A hook for a tufting machine
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Also Published As

Publication number Publication date
KR101293067B1 (en) 2013-08-05
CN101029438A (en) 2007-09-05
KR20070088367A (en) 2007-08-29
JP2007224492A (en) 2007-09-06
JP4528794B2 (en) 2010-08-18
EP1826306A1 (en) 2007-08-29
CN101029438B (en) 2011-07-20
US20070199489A1 (en) 2007-08-30
US7520229B2 (en) 2009-04-21

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