EP1220960B1 - Gripper for a gripper loom - Google Patents

Gripper for a gripper loom Download PDF

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Publication number
EP1220960B1
EP1220960B1 EP00972691A EP00972691A EP1220960B1 EP 1220960 B1 EP1220960 B1 EP 1220960B1 EP 00972691 A EP00972691 A EP 00972691A EP 00972691 A EP00972691 A EP 00972691A EP 1220960 B1 EP1220960 B1 EP 1220960B1
Authority
EP
European Patent Office
Prior art keywords
gripper
clamp
guides
clamping
hook
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.)
Expired - Lifetime
Application number
EP00972691A
Other languages
German (de)
French (fr)
Other versions
EP1220960A1 (en
Inventor
Kristof Roelstraete
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of EP1220960A1 publication Critical patent/EP1220960A1/en
Application granted granted Critical
Publication of EP1220960B1 publication Critical patent/EP1220960B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/236—Drawing grippers

Abstract

The invention relates to a gripper for a gripper loom wherein a clamp head (14) which can be moved back and forth by means of a tongue (15) between two guides (21, 22) pertaining to a clamp hook (11) is forcibly moved in such a way that it moves in a direction which is at a slanted angle to the longitudinal direction of said gripper and at a slanted angle to the direction of a clamp surface (12).

Description

Die Erfindung betrifft einen Nehmergreifer für eine Greiferwebmaschine mit einem Greifergehäuse, an dessen vorderem Ende ein Klemmhaken vorgesehen ist, der eine Klemmfläche aufweist, der eine Gegenklemmfläche eines Klemmkopfes zugeordnet ist, der an einer Zunge gehalten ist, die in Abstand zum Klemmkopf an einem schwenkbar gelagerten Hebel angelenkt und mit einer Feder belastet ist, die den Klemmkopf in die Klemmstellung drückt.The invention relates to a slave rapier for a rapier weaving machine with a gripper housing at the front end a clamping hook is provided which has a clamping surface, which is assigned a counter clamping surface of a clamping head, which is held on a tongue that is at a distance from the clamping head articulated on a pivoted lever and with a Spring is loaded that the clamping head in the clamping position suppressed.

Bei einem Nehmergreifer der eingangs genannten Art, wie er beispielsweise aus der EP 0 233 142 bekannt ist, greift in Abstand zu dem Klemmkopf an die Klemmzunge eine zusätzliche Feder an, die die Klemmzunge quer zur Greiferlängsrichtung belastet und dafür sorgt, daß beim Zurückziehen der Zunge die Gegenklemmfläche des Klemmkopfes von der Klemmfläche des Klemmhakens wegbewegt wird.With a slave gripper of the type mentioned above, like him is known, for example, from EP 0 233 142 An additional distance to the clamping head on the clamping tongue Spring on the clamping tongue transversely to the longitudinal direction of the gripper burdened and ensures that when pulling back the tongue Counter clamping surface of the clamping head from the clamping surface of the Clamping hook is moved away.

Der Erfindung liegt die Aufgabe zugrunde, einen Nehmergreifer der eingangs genannten Art zu vereinfachen und gleichzeitig dabei sicherzustellen, daß ein Faden schon nach relativ kurzem Weg der Zunge freigegeben wird. The invention has for its object a slave gripper to simplify the type mentioned above and at the same time to ensure that a thread after a relatively short time Way of the tongue is released.

Diese Aufgabe wird dadurch gelöst, daß der Klemmkopf zwischen zwei Führungen des Klemmhakens schräg zur Greiferlängsrichtung und schräg zur Richtung der Klemmfläche zwangsgeführt ist.This object is achieved in that the clamping head between two guides of the clamping hook at an angle to the longitudinal direction of the gripper and positively guided obliquely to the direction of the clamping surface is.

Aufgrund der Zwangsführung des Klemmkopfes zwischen zwei Führungen des Klemmhakens erübrigt sich eine Feder, die eine Kraft quer zur Längsrichtung des Greifers auf die Zunge ausübt, da der Klemmkopf nur die von den beiden Führungen vorbestimmte Bewegung ausführen kann. Darüber hinaus ergibt sich der Vorteil, daß kaum Vibrationen oder Schwingungen im Bereich des Greiferkopfes zu befürchten sind, die einen Einfluß auf die auf den übernommenen Faden ausgeübte Haltekraft haben könnten. Da die Führungen in dem Klemmhaken untergebracht sind, läßt sich eine sehr schlanke Gestalt realisieren. Dies hat den Vorteil, daß dann entsprechend der Gebergreifer, in welchem der Nehmergreifer bei Übernahme eines Schußfadens eindringt, ebenfalls relativ schlank gehalten werden kann. Dies führt dann weiter zu dem Vorteil, daß beim Weben nur ein relativ kleines Webfach erforderlich ist.Due to the forced guidance of the clamping head between two guides there is no need for a spring, the one of the clamping hook Exerts force on the tongue transversely to the longitudinal direction of the gripper, since the clamping head only the one predetermined by the two guides Can perform movement. In addition, it follows the advantage that hardly any vibrations or oscillations in the area of the gripper head are to be feared, which have an influence on the holding force exerted on the thread taken over could. Because the guides are housed in the clamp hook are, a very slim shape can be realized. This has the advantage that, according to the encoder gripper, in which of the taker grabs when picking up a weft penetrates, can also be kept relatively slim. This then leads to the advantage that only one during weaving relatively small shed is required.

In Ausgestaltung der Erfindung wird vorgesehen, daß wenigstens eine der Führungen in Querrichtung profiliert ist, in welcher der Klemmkopf mit einer entsprechenden Profilierung geführt ist. Damit wird auch gleichzeitig eine Querführung des Klemmkopfes erhalten, ohne daß hierfür gesonderte Führungen oder Führungsflächen vorhanden sein müssen.In an embodiment of the invention it is provided that at least one of the guides is profiled in the transverse direction, in which the clamping head with a corresponding profile is led. This also becomes a lateral guide receive the clamping head without separate guides for this or guide surfaces must be available.

In vorteilhafter Weiterbildung der Erfindung wird vorgesehen, daß die Führungen in einem ein- oder mehrteiligen Einsatz vorgesehen sind, der in einer Aussparung des Klemmhakens angebracht ist. Damit läßt sich für die Führungen ein geeigneter Werkstoff auswählen, ohne daß der gesamte Klemmhaken aus diesem Werkstoff bestehen muß. In an advantageous development of the invention, it is provided that that the guides in one or more parts are provided, which is attached in a recess of the clamping hook is. This can be a suitable one for the tours Select material without the entire clamping hook this material must exist.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der in den Zeichnungen dargestellten Ausführungsformen.

Fig. 1
zeigt eine perspektivische Ansicht eines erfindungsgemäßen Nehmergreifers,
Fig. 2
einen Längsschnitt durch den vorderen Bereich des Nehmergreifers bei geschlossener Klemme,
Fig. 3
einen Ausschnitt der Fig. 2 in größerem Maßstab,
Fig. 4
den Nehmergreifer nach Fig. 2 bei geöffneter Klemme,
Fig. 5
eine Einzelheit der Fig. 4 in größerem Maßstab,
Fig. 6
eine Teilansicht des Nehmergreifers der Fig. 1 in Richtung des Pfeiles F6,
Fig. 7
eine Ansicht ähnlich Fig. 6 auf einer andere Ausführungsform eines Nehmergreifers,
Fig. 8
einen Ausschnitt ähnlich Fig. 3 einer weiteren Ausführungsform eines Nehmergreifers,
Fig. 9
einen Ausschnitt ähnlich Fig. 5 der Ausführungsform nach Fig. 8,
Fig. 10
einen Längsschnitt ähnlich Fig. 2 durch eine weitere Ausführungsform eines Nehmergreifers und
Fig. 11
einen Längsschnitt durch den Nehmergreifer der Fig. 10 bei geöffneter Fadenklemme.
Further features and advantages of the invention result from the following description of the embodiments shown in the drawings.
Fig. 1
shows a perspective view of a gripper according to the invention,
Fig. 2
a longitudinal section through the front area of the slave gripper with the clamp closed,
Fig. 3
2 shows a section of FIG. 2 on a larger scale,
Fig. 4
2 with the clamp open,
Fig. 5
a detail of Fig. 4 on a larger scale,
Fig. 6
2 shows a partial view of the slave gripper of FIG. 1 in the direction of arrow F6,
Fig. 7
6 a view similar to FIG. 6 on another embodiment of a slave gripper,
Fig. 8
3 shows a detail similar to FIG. 3 of a further embodiment of a slave gripper,
Fig. 9
5 shows a section similar to FIG. 5 of the embodiment according to FIG. 8,
Fig. 10
a longitudinal section similar to FIG. 2 through a further embodiment of a slave gripper and
Fig. 11
a longitudinal section through the slave gripper of FIG. 10 with the thread clamp open.

Der in den Zeichnungen dargestellte Nehmergreifer besitzt ein Greifergehäuse 10 aus Metall, das in nicht näher dargestellter Weise an dem vorderen Ende eines Greiferbandes angebracht wird. An dem vorderen Ende des Greifergehäuses 10 ist ein Klemmhaken 11 angebracht, der eine Klemmfläche 12 aufweist. Dieser Klemmfläche 12 ist eine Gegenklemmfläche 13 eines Klemmkopfes 14 zugeordnet. Der Klemmkopf 14 befindet sich an dem vorderen Ende einer Zunge 15, deren hinteres Ende an einen Betätigungshebel 16 angelenkt ist, der um eine Achse 17 schwenkbar in dem Greifergehäuse 10 gelagert ist. Der Betätigungshebel 16 ist mit einer Druckfeder belastet, die in Greiferlängsrichtung ausgerichtet ist und die über den Hebel die Zunge 15 belastet, die den Klemmkopf 14 mit seiner Gegenklemmfläche 13 gegen die Klemmfläche 12 des Klemmhakens 11 drückt. Wird der Hebel 16 nach innen gedrückt, wie dies in Fig. 4 und 5 dargestellt ist, so wird die Klemme geöffnet.The slave gripper shown in the drawings has a Gripper housing 10 made of metal, which is not shown in detail Way attached to the front end of a gripper belt becomes. At the front end of the gripper housing 10 is a Clamping hook 11 attached, which has a clamping surface 12. This clamping surface 12 is a counter clamping surface 13 Clamping head 14 assigned. The clamping head 14 is on the front end of a tongue 15, the rear end of one Actuating lever 16 is articulated about an axis 17th is pivotally mounted in the gripper housing 10. The operating lever 16 is loaded with a compression spring, which is in the longitudinal direction of the gripper is aligned and the lever Tongue 15 loads the clamping head 14 with its counter clamping surface 13 against the clamping surface 12 of the clamping hook 11 suppressed. If the lever 16 is pushed in, as shown in 4 and 5 is shown, the clamp is opened.

Der Klemmkopf 14 besitzt zwei im wesentlichen parallel zueinander verlaufende Führungsflächen 19, 20, die schräg zur Greiferlängsrichtung und schräg zu der Klemmfläche 12 des Klemmhakens 11 gerichtet sind. Mittels dieser beiden Führungsflächen 19, 20 ist der Klemmkopf 14 zwischen zwei Führungen 21, 22 geführt, die in einer Aussparung des Klemmhakens 11 vorgesehen sind. Die Führung 21 besitzt eine rillenartige Profilierung 23, in welcher die entsprechend profilierte Führungsfläche 19 des Klemmkopfes in Querrichtung geführt ist.The clamping head 14 has two substantially parallel to each other running guide surfaces 19, 20 which are inclined to Gripper longitudinal direction and obliquely to the clamping surface 12 of the Clamping hook 11 are directed. By means of these two guide surfaces 19, 20 is the clamping head 14 between two guides 21, 22 performed in a recess of the clamping hook 11 are provided. The guide 21 has a groove-like Profiling 23, in which the corresponding profiled Guide surface 19 of the clamping head guided in the transverse direction is.

Da der Klemmkopf 14 schräg zur Greiferlängsrichtung zwischen den beiden Führungen 21, 22 zwangsgeführt ist, wird jede Bewegung der Zunge 15 in Greiferlängsrichtung in diese schräge Richtung umgesetzt, ohne daß hierfür eine Feder erforderlich ist. Wie aus Fig. 2 und 4 zu ersehen ist, ist die Zunge 15 an den Betätigungshebel 16 derart angelenkt, daß sich der Anlenkpunkt bei einer Betätigung des Betätigungshebels 16 im wesentlichen tangential zur Schwenkachse bewegt. Die dabei auftretende leichte Querbewegung der Anlenkstelle kann in der Anlenkstelle ausgeglichen werden. Ein Ausgleichen dieser Querbewegung ergibt sich ohne weiteres auch durch eine geringe elastische Deformation der Zunge 15, da der Abstand zwischen dem Klemmkopf 14 und der Anlenkstelle an dem Betätigungshebel 16 relativ groß ist.Since the clamping head 14 obliquely to the longitudinal direction of the gripper between the two guides 21, 22 is positively guided, every movement the tongue 15 in the longitudinal direction of the gripper in this oblique Direction implemented without the need for a spring is. As can be seen from FIGS. 2 and 4, the tongue 15 is on the actuating lever 16 articulated such that the articulation point upon actuation of the actuating lever 16 in moved essentially tangential to the pivot axis. The one there Slight transverse movement of the articulation point can occur in the Articulation point are compensated. Balancing this Transverse movement also results from a slight one elastic deformation of the tongue 15 because the distance between the clamping head 14 and the articulation point on the actuating lever 16 is relatively large.

Bei dem Ausführungsbeispiel nach Fig. 6 sind die Führungen 21 und 22 getrennt hergestellte Elemente, die in einer Aussparung 24 des Klemmhakens 11 eingesetzt und dort in nicht näher dargestellter Weise befestigt sind, beispielsweise eingeklebt sind.In the exemplary embodiment according to FIG. 6, the guides 21 and 22 separately manufactured elements that are in a recess 24 of the clamping hook 11 used and there in no closer are shown attached, for example glued are.

Bei dem Ausführungsbeispiel nach Fig. 7 sind die Führungen 21, 22 in einen einteiligen Einsatz 25 eingearbeitet, der in den Klemmhaken 11 eingesetzt und dort in nicht näher dargestellter Weise befestigt ist, beispielsweise eingeklebt ist.7 are the guides 21, 22 incorporated into a one-piece insert 25, which in used the clamping hook 11 and there in a not shown Is attached, for example glued.

Bei der Ausführungsform nach Fig. 8 und 9 besitzt der Klemmhaken 11 eine in Greiferlängsrichtung verlaufende Klemmfläche 12, der eine ebenfalls in Greiferlängsrichtung verlaufende Gegenklemmfläche 13 eines Klemmkopfes 14 zugeordnet ist. Bei dieser Ausführungsform wird ein Schußfaden beim Öffnen der Fadenklemme parallel zur Greiferlängsrichtung freigegeben. Aus diesem Grunde bleibt das Ende des Schußfadens parallel zum Warenrand, bevor es angeschlagen wird.In the embodiment according to FIGS. 8 and 9, the clamping hook has 11 a clamping surface running in the longitudinal direction of the gripper 12, which also runs in the longitudinal direction of the gripper Counter clamping surface 13 of a clamping head 14 is assigned. at This embodiment uses a weft when opening the Thread clamp released parallel to the longitudinal direction of the hook. For this reason, the end of the weft remains parallel to the goods edge before it is posted.

Bei der Ausführungsform nach Fig. 10 und 11 sind die Führungsflächen 19, 20 des Klemmkopfes 14 und die Führungen 26, 27 des Klemmhakens 11 derart profiliert, daß sie auf Kreisbahnen zu einer zur Achse 17 des Betätigungshebels parallelen Achse liegen. Mit Hilfe derartiger Ausbildungen der Führungen und Führungsflächen ist es möglich, die elastische Verformung der Zunge 15 zu beschränken. Wenigstens eine der Führungen 26 oder 27 kann zudem in Querrichtung profiliert sein, wie dies in Fig. 6 und 7 dargestellt ist. Die Führungen 26, 27 sind Bestandteil eines einteiligen oder zweiteiligen Einsatzes, der in einer Aussparung des Klemmhakens 11 angebracht ist.10 and 11 are the guide surfaces 19, 20 of the clamping head 14 and the guides 26, 27 of the clamping hook 11 profiled such that they are on circular paths to a parallel to the axis 17 of the operating lever Axis. With the help of such training of the guides and guide surfaces it is possible to adjust the elastic deformation to limit the tongue 15. At least one of the guides 26 or 27 may also be profiled transversely, such as this 6 and 7 is shown. The guides 26, 27 are Part of a one-part or two-part insert, which is mounted in a recess of the clamping hook 11.

Die dargestellten Ausführungsbeispiele dienen nur zur Erläuterung der Erfindung. Abwandlungen sind ohne weiteres möglich, insbesondere in bezug auf die Gestaltung der Führungen für den Klemmkopf 14. Beispielsweise ist es auch möglich, den Klemmkopf 14 mit einem zylindrischen Hals oder mit einem oder mehreren zylindrischen Bolzen in entsprechend hohlzylindrischen Führungen zu führen.The exemplary embodiments shown serve only for explanation the invention. Modifications are easily possible, especially with regard to the design of the tours for the clamping head 14. For example, it is also possible to use the Clamping head 14 with a cylindrical neck or with an or several cylindrical bolts in corresponding hollow cylindrical Guides.

Claims (4)

  1. Taker gripper for a gripper loom, having a gripper housing, at the front end of which there is arranged a clamp hook that has a clamp surface, to which is assigned an opposing clamp surface of a clamp head, which is held on a tongue that is connected at a distance to the clamp head to a pivot-mounted lever and is under the force of a spring which presses the clamp head into the clamping position,
    characterized in that the clamp head (14) is forcibly guided between two guides (21, 22, 26, 27) of the clamp hook (11) at an oblique angle to the longitudinal direction of the gripper and at an oblique angle to the direction of the clamp surface (12).
  2. Taker gripper as in Claim 1,
    characterized in that at least one of the guides (21, 22) is profiled in the transverse direction, in which the clamp head (14) is guided with a corresponding profiling.
  3. Taker gripper as in Claim 1 or 2,
    characterized in that the guides (21, 22) are provided in a one-piece or multiple-piece insert which is placed in a recess of the clamp hook (11).
  4. Taker gripper as in Claim 1 or 2,
    characterized in that the guides (26, 27) of the clamp hook and/or the guide surfaces (19, 20) of the clamp head (14) are profiled and touch each other linearly.
EP00972691A 1999-10-11 2000-10-06 Gripper for a gripper loom Expired - Lifetime EP1220960B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19948960 1999-10-11
DE19948960A DE19948960A1 (en) 1999-10-11 1999-10-11 Slave rapier for a rapier weaving machine
PCT/EP2000/009787 WO2001027369A1 (en) 1999-10-11 2000-10-06 Gripper for a gripper loom

Publications (2)

Publication Number Publication Date
EP1220960A1 EP1220960A1 (en) 2002-07-10
EP1220960B1 true EP1220960B1 (en) 2004-12-15

Family

ID=7925246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00972691A Expired - Lifetime EP1220960B1 (en) 1999-10-11 2000-10-06 Gripper for a gripper loom

Country Status (4)

Country Link
EP (1) EP1220960B1 (en)
AT (1) ATE284988T1 (en)
DE (2) DE19948960A1 (en)
WO (1) WO2001027369A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005014107A1 (en) * 2005-03-22 2006-09-28 Picanol N.V. Receiving gripper with a hook-shaped insert and method for producing the hook-shaped insert
BE1018116A3 (en) 2008-05-07 2010-05-04 Picanol Nv TAKE-UP MEASURER, MEASURING MEASURE AND DEVICE FOR A GRIJPER-WOVEN MACHINE.
EP4101960A1 (en) * 2021-06-10 2022-12-14 Picanol Gripper for a rapier weaving machine
WO2022258443A1 (en) * 2021-06-10 2022-12-15 Picanol Gripper for a rapier weaving machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1132844B (en) * 1980-09-15 1986-07-09 Nuovo Pignone Spa IMPROVEMENTS IN THE GRINDING PLIERS FOR TEXTILE FRAMES
CH670262A5 (en) * 1986-02-13 1989-05-31 Sulzer Ag
EP0812939B1 (en) * 1996-06-14 2001-04-04 Sulzer Textil AG Drawing gripper for gripper loom

Also Published As

Publication number Publication date
WO2001027369A1 (en) 2001-04-19
ATE284988T1 (en) 2005-01-15
DE50008975D1 (en) 2005-01-20
DE19948960A1 (en) 2001-04-12
EP1220960A1 (en) 2002-07-10

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