EP1108079B1 - Insertion gripper for a rapier loom - Google Patents

Insertion gripper for a rapier loom Download PDF

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Publication number
EP1108079B1
EP1108079B1 EP99940023A EP99940023A EP1108079B1 EP 1108079 B1 EP1108079 B1 EP 1108079B1 EP 99940023 A EP99940023 A EP 99940023A EP 99940023 A EP99940023 A EP 99940023A EP 1108079 B1 EP1108079 B1 EP 1108079B1
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EP
European Patent Office
Prior art keywords
hook
gripper
clamping
guide
locking
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
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EP99940023A
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German (de)
French (fr)
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EP1108079A1 (en
Inventor
Kristof Roelstraete
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Picanol NV
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Picanol NV
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Publication date
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Publication of EP1108079A1 publication Critical patent/EP1108079A1/en
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    • 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

Definitions

  • the invention relates to a slave rapier for a rapier weaving machine with a hook on the inside a clamping surface running obliquely to the longitudinal direction of the gripper has, and with a clamping piece that one of the clamping surface of the hook associated clamping surface, which essentially in the longitudinal direction of the gripper against a spring from a Clamping position is movable into an open position and that on the side opposite the clamping surfaces by means of a Leadership is supported and guided.
  • a slave gripper of the type mentioned above like him is known from GB 2 106 550 A, for example Clamp guided in its direction of movement. At this The clamp must be a relatively long way in its design open position to be moved so a weft is released becomes.
  • the invention has for its object a slave gripper of the type mentioned at the outset, on the one hand relative opens quickly, but on the other hand not too high Is subject to wear.
  • the slave gripper shown only schematically in Fig. 1 has a base body 1, at the front end by means of Screws 2 a hook 3 is attached.
  • the hook 3 has on its inside an oblique to the longitudinal direction of the gripper running clamping surface 4.
  • This clamping surface 4 is one Clamping surface of a clamping piece 5 assigned in the direction of the arrow A is mobile.
  • the clamping piece 5 is in the direction loaded to the clamping surface 4 of the hook 3 by means of a spring 6, via a transmission mechanism, not shown, which contains a transmission element 7, on the clamping piece 5 acts.
  • a lever 8 which in the Gripper body 1 is pivotally mounted about an axis 9
  • the clamping piece 5 can be withdrawn to release a weft thread become.
  • the gripper body 1 of the slave gripper is attached to a guide member 10 which a gripper belt 11th extended.
  • the actuating mechanism is designed with which the clamping piece 5 is movable in the direction of arrow A and what type of spring loads the clamping piece in the closing direction. Practically every known slave gripper comes in for this Question. Rather, what is essential is how the clamping piece 5 is guided is to achieve that on the one hand a relative weak load spring 6 can be used while on the other hand nevertheless a relatively quick opening of that Clamping piece 5 and the hook 3 formed clamp can be reached can.
  • the spring 6 and possibly an additional spring element not only ensure that the clamping piece 5 towards the end of the hook 3 is loaded, but also for that presses a spring force in the transverse direction on the clamping piece 5, which the clamping piece in the direction of the clamping surface 4 of the hook 3 charged.
  • Clamping piece 5 has a curved clamping surface, the clamping area of which in substantially parallel to the flat clamping surface 4 of the hook 3 runs, which is formed by an insert.
  • the clamping surface 4 is at an angle to the direction of movement of the clamping piece 5 aligned.
  • the guide element 12 forms with that assigned to it Part of the clamping piece 5 is a curved guideway 13.
  • This guideway 13 runs towards the top of the hook 3 initially with a relatively strong curvature the clamping surface 4 of the hook 3 and then goes into a section over, which is parallel to the direction of movement of the Clamping piece 5 extends, i.e. in the longitudinal direction of the slave gripper.
  • the curvature has the shape of a parabola second degree or higher order or the form a segment of a circle.
  • the clamping piece is 5 with a rounded rib 14 in a corresponding rounded longitudinal groove 15 of the guide member 12 to form the guide 13 out.
  • FIGS. 6 to 9 corresponds in principle the embodiment of FIGS. 2 to 5. The difference is that according to the embodiments 6 to 9, the guide element 12 'as a rounded longitudinal rib 15 'is formed, while the clamping piece 5 accordingly is provided with a rounded longitudinal groove 14 '. With this too Designing will get the same benefits that it already has have been described with reference to FIGS. 2 to 5.
  • the hook 3 provided with a guide element in the form of a roller 16, attached to the hook 3 stationary or rotatably mounted is.
  • To be curved in this embodiment To create guideway 17 is the hook 3 facing, the roller 16 opposite end of the clamping piece 5 in a suitable Profiled way.
  • the roller 16 operates in the clamping position parallel to the direction of movement of the clamping piece 5 or Section running longitudinally of the entire slave gripper with the roller 16 together. Before this section a curved area so that the clamping piece 5 after a relatively short path quickly moved away from the clamping surface 4 or quickly delivered this clamping surface 4 again can be.
  • 6 to 9 and 10 13 to 13 are the guide elements 12, 12 'and 16 in the area arranged of the hook 3, which is opposite the clamping surface 4.
  • FIG. 14 to 16, 17 to 19 and 20 to 22 is shown however, it is also easily possible to use these guide elements to be arranged elsewhere.
  • 17 to 19 is a role 16 corresponding to the embodiment of FIG. 10 to 13 offset to the clamping surface 4 of the hook 3.
  • the guide element 12th a one-piece insert with the clamping surface 4, which in the hook 3 is used.
  • the Guide path 13, 17, 19 in the direction of the clamping position the movement of the clamping piece 5 runs, i.e. longitudinal the gripper. This ensures that the movement of the clamping piece in this area without superimposed Transverse movement from or to the clamping surface 4 of the hook 3 takes place.
  • This goal can also be achieved in that the Guideway in the area of the clamping position from the clamping surface 4 deviates from the longitudinal direction of the gripper, i.e. the Clamping piece 5 in the area of the clamping position one of the clamping surface 4 transverse movement is superimposed.
  • the essence of the invention consists of how the clamping piece 5 before and when it is reached its clamping position is performed. With which elements the clamping piece 5 loaded in the longitudinal direction to the hook 3 and / or how the clamping piece 5 is withdrawn from the hook 3 is largely irrelevant. There are thus very different constructions are conceivable with which this sequence of movements can be achieved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

A receiving gripper for a rapier loom. The gripper includes a hook (3) and a clamping element (5) cooperating with the hook. The clamping element (5) is guided along a curved guide path (13) between an open position and a clamping position by a guide (14, 15) along a curved guide path (13). The guide path is directed to the hook's clamping surface (4) when in the zone before the clamping position and when in the zone of clamping position including a section in which no transverse displacement is superposed on the motion of the clamping element (5).

Description

Die Erfindung betrifft einen Nehmergreifer für eine Greiferbandwebmaschine mit einem Haken, der auf seiner Innenseite eine schräg zur Greiferlängsrichtung verlaufende Klemmfläche aufweist, und mit einem Klemmstück, das eine der Klemmfläche des Hakens zugeordnete Klemmfläche aufweist, das im wesentlichen in Greiferlängsrichtung gegen eine Feder aus einer Klemmposition in eine geöffnete Position bewegbar ist und das auf der den Klemmflächen gegenüberliegenden Seite mittels einer Führung abgestützt und geführt ist.The invention relates to a slave rapier for a rapier weaving machine with a hook on the inside a clamping surface running obliquely to the longitudinal direction of the gripper has, and with a clamping piece that one of the clamping surface of the hook associated clamping surface, which essentially in the longitudinal direction of the gripper against a spring from a Clamping position is movable into an open position and that on the side opposite the clamping surfaces by means of a Leadership is supported and guided.

Bei einem Nehmergreifer der eingangs genannten Art, wie er beispielsweise aus der GB 2 106 550 A bekannt ist, ist das Klemmstück in seiner Bewegungsrichtung geführt. Bei dieser Bauart muß das Klemmstück einen relativ großen Weg in seine geöffnete Position bewegt werden, damit ein Schußfaden freigegeben wird.With a slave gripper of the type mentioned above, like him is known from GB 2 106 550 A, for example Clamp guided in its direction of movement. At this The clamp must be a relatively long way in its design open position to be moved so a weft is released becomes.

Aus der EP 0 123 005 B1, die einen Nehmergreifer gemäß dem Oberbegriff des unabhängigen Anspruchs offenbart, ist es bekannt, die Führung als eine zur Klemmfläche des Hakens entgegengesetzte schräge, ebene Bahn auszubilden. Dadurch wird erreicht, daß das Klemmstück, das sich entlang dieser Bahn bewegt, nach einer relativ kurzen Öffnungsbewegung einen Schußfaden freigibt, da zusätzlich zu der Längsbewegung des Klemmstückes eine schräge Querbewegung ausgeführt wird. From EP 0 123 005 B1, which a slave gripper according to General term of the independent claim disclosed, it is known to be the leader oblique, flat surface opposite to the clamping surface of the hook Train web. This ensures that the clamping piece, that moves along this path after a relatively short one Opening movement releases a weft thread, because additional an oblique transverse movement to the longitudinal movement of the clamping piece is performed.

Bei einem Nehmergreifer muß der Schußfaden sicher zwischen den Klemmflächen des Hakens und des Klemmstückes gehalten werden. Die Klemmkräfte müssen ausreichend groß sein, damit das Klemmstück die Klemmposition nicht unter Einwirkung von Beschleunigungskräften oder Bremskräften verläßt, oder wenn der Greifer aufgrund von äußeren Kräften in Schwingungen gerät. Diese Kräfte werden von der das Klemmstück belastenden Feder aufgebracht. Bei der Bauart nach der EP 0 123 005 ist eine Feder mit relativ großer Federkraft erforderlich, da sich das Klemmstück in der Klemmposition nicht nur gegen die Klemmfläche des Hakens sondern auch gegen die Führung abstützt. Von der Stärke der Feder sind die Belastungen der Klemmflächen der Führung und der sonstigen Betätigungselemente und Verbindungen zwischen einem Betätigungshebel und dem Klemmstück abhängig. Hohe Federkräfte sind mit einer entsprechend hohen Beanspruchung und einem entsprechend hohen Verschleiß verbunden. Bei der Bauart nach der EP 0 123 005 B1 wird somit der Vorteil des schnellen Freigebens eines Schußfadens mit dem Nachteil eines erhöhten Verschleißes erkauft.With a taker rapier, the weft thread must be safely between the clamping surfaces of the hook and the clamping piece held become. The clamping forces must be sufficiently large for this the clamping piece does not affect the clamping position Accelerating or braking forces leaves, or if the gripper vibrates due to external forces. These forces are exerted by the clamping piece Spring applied. In the design according to EP 0 123 005 a spring with a relatively high spring force is required because the clamping piece in the clamping position not only against the Clamping surface of the hook but also supports against the guide. The loads of the spring are the Clamping surfaces of the guide and the other actuating elements and connections between an operating lever and the Depending on the clamping piece. High spring forces are appropriate high demands and a correspondingly high level of wear connected. In the design according to EP 0 123 005 B1 becomes the advantage of quickly releasing a weft bought with the disadvantage of increased wear.

Der Erfindung liegt die Aufgabe zugrunde, einen Nehmergreifer der eingangs genannten Art zu schaffen, der einerseits relativ schnell öffnet, jedoch andererseits keinem allzu hohen Verschleiß unterworfen ist.The invention has for its object a slave gripper of the type mentioned at the outset, on the one hand relative opens quickly, but on the other hand not too high Is subject to wear.

Diese Aufgabe wird dadurch gelöst, daß das Klemmstück zwischen der geöffneten Position und der Klemmposition mittels der Führung auf einer gekrümmten Führungsbahn geführt ist, die in dem Bereich vor der Klemmposition hin zu der Klemmfläche des Hakens gerichtet ist und die in den Bereich der Klemmposition in einen Abschnitt übergeht, der im wesentlichen in Greiferlängsrichtung verläuft.This object is achieved in that the clamping piece between the open position and the clamping position by means of the guide is guided on a curved guideway, that in the area in front of the clamping position towards the clamping surface of the hook and which is in the range of Clamping position merges into a section that essentially runs in the longitudinal direction of the gripper.

Mittels der erfindungsgemäß gekrümmten Führungsbahn der Führung wird erreicht, daß ausreichend große Klemmkräfte mittels einer relativ schwachen Feder erhalten werden, da das Klemmstück gegen die Kraft der Feder praktisch ausschließlich an den Klemmflächen abgestützt wird. Dennoch läßt sich mittels der gekrümmten Führungsbahn erreichen, daß der Längsbewegung des Klemmstückes eine relativ große Querbewegung überlagert wird, so daß der Greifer relativ schnell geöffnet werden kann.By means of the guideway of the guide curved according to the invention is achieved by means of sufficiently large clamping forces a relatively weak spring can be obtained because of the clamping piece against the force of the spring practically exclusively the clamping surfaces is supported. Nevertheless can be the curved guideway achieve that longitudinal movement a relatively large transverse movement is superimposed on the clamping piece is so that the gripper can be opened relatively quickly can.

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

Fig. 1
zeigt eine perspektivische Darstellung eines erfindungsgemäßen Nehmergreifers,
Fig. 2 - 4
eine Ansicht in Richtung des Pfeiles F2 der Fig. 1 auf eine erste Ausführungsform eines Nehmergreifers in seiner Klemmposition, in seiner geöffneten Position und in einer dazwischen liegenden Position,
Fig. 5
einen Schnitt entlang der Linie V-V der Fig. 2,
Fig. 6 - 8
Ansichten auf einer Ausführungsform ähnlich Fig. 2 bis 4,
Fig. 9
einen Schnitt entlang der Linie IX-IX der Fig. 6,
Fig. 10- 12
Ansichten einer Ausführungsform mit einer Rollenführung für das Klemmstück,
Fig. 13
einen Schnitt entlang der Linie XIII-XIII der Fig. 10,
Fig. 14 - 16
Ansichten einer weiteren Ausführungsform mit einem gegenüber Fig. 6 bis 8 zurückgesetzten Führungselement,
Fig. 17 - 19
eine Ausführungsform ähnlich Fig. 10 bis 13 mit einem zurückgesetzten rollenförmigen Führungselement,
Fig. 20 - 22
Ansichten einer Ausführungsform mit einem kugelförmigen Führungselement und
Fig. 23
einen Schnitt entlang der Linie XIII-XIII der Fig. 20.
Further features and advantages of the invention result from the following description of the exemplary embodiments shown in the drawings and the subclaims.
Fig. 1
shows a perspective view of a gripper according to the invention,
Figs. 2-4
2 shows a view in the direction of arrow F2 in FIG. 1 of a first embodiment of a slave gripper in its clamping position, in its open position and in an intermediate position,
Fig. 5
3 shows a section along the line VV in FIG. 2,
6 - 8
Views on an embodiment similar to FIGS. 2 to 4,
Fig. 9
6 shows a section along the line IX-IX of FIG. 6,
Fig. 10- 12
Views of an embodiment with a roller guide for the clamping piece,
Fig. 13
10 shows a section along the line XIII-XIII of FIG. 10,
Figures 14-16
Views of a further embodiment with a guide element set back in relation to FIGS. 6 to 8,
Fig. 17-19
10 to 13 with a recessed roller-shaped guide element,
Figures 20-22
Views of an embodiment with a spherical guide element and
Fig. 23
a section along the line XIII-XIII of Fig. 20th

Der in Fig. 1 nur schematisch dargestellte Nehmergreifer besitzt einen Grundkörper 1, an dessen vorderem Ende mittels Schrauben 2 ein Haken 3 angebracht ist. Der Haken 3 besitzt auf seiner Innenseite eine schräg zur Greiferlängsrichtung verlaufende Klemmfläche 4. Dieser Klemmfläche 4 ist eine Klemmfläche eines Klemmstückes 5 zugeordnet, das in Pfeilrichtung A beweglich ist. Das Klemmstück 5 wird in Richtung zu der Klemmfläche 4 des Hakens 3 mittels einer Feder 6 belastet, die über einen nicht dargestellten Übertragungsmechanismus, der ein Übertragungselement 7 enthält, auf das Klemmstück 5 einwirkt. Durch Betätigen eines Hebels 8, der in dem Greiferkörper 1 um eine Achse 9 verschwenkbar gelagert ist, kann das Klemmstück 5 zum Freigeben eines Schußfadens zurückgezogen werden. Der Greiferkörper 1 des Nehmergreifers ist auf einem Führungsteil 10 befestigt, das ein Greiferband 11 verlängert.The slave gripper shown only schematically in Fig. 1 has a base body 1, at the front end by means of Screws 2 a hook 3 is attached. The hook 3 has on its inside an oblique to the longitudinal direction of the gripper running clamping surface 4. This clamping surface 4 is one Clamping surface of a clamping piece 5 assigned in the direction of the arrow A is mobile. The clamping piece 5 is in the direction loaded to the clamping surface 4 of the hook 3 by means of a spring 6, via a transmission mechanism, not shown, which contains a transmission element 7, on the clamping piece 5 acts. By operating a lever 8 which in the Gripper body 1 is pivotally mounted about an axis 9, the clamping piece 5 can be withdrawn to release a weft thread become. The gripper body 1 of the slave gripper is attached to a guide member 10 which a gripper belt 11th extended.

Für die vorliegende Erfindung ist es von untergeordneter Bedeutung, wie der Betätigungsmechanismus gestaltet ist, mit welchem das Klemmstück 5 in Pfeilrichtung A bewegbar ist und welche Art von Feder das Klemmstück in Schließrichtung belastet. Hierfür kommt praktisch jeder bekannte Nehmergreifer in Frage. Wesentlich ist vielmehr nur, wie das Klemmstück 5 geführt ist, um zu erreichen, daß einerseits eine relativ schwache Belastungsfeder 6 eingesetzt werden kann, während andererseits dennoch ein relativ schnelles Öffnen der von dem Klemmstück 5 und dem Haken 3 gebildeten Klemme erreicht werden kann. Die Feder 6 und ggf. ein zusätzliches Federelement sorgen nicht nur dafür, daß das Klemmstück 5 in Richtung zu dem Ende des Hakens 3 belastet ist, sondern auch dafür, daß auf das Klemmstück 5 eine Federkraft in Querrichtung drückt, die das Klemmstück in Richtung von der Klemmfläche 4 des Hakens 3 hinweg belastet.For the present invention, it is of secondary importance how the actuating mechanism is designed with which the clamping piece 5 is movable in the direction of arrow A and what type of spring loads the clamping piece in the closing direction. Practically every known slave gripper comes in for this Question. Rather, what is essential is how the clamping piece 5 is guided is to achieve that on the one hand a relative weak load spring 6 can be used while on the other hand nevertheless a relatively quick opening of that Clamping piece 5 and the hook 3 formed clamp can be reached can. The spring 6 and possibly an additional spring element not only ensure that the clamping piece 5 towards the end of the hook 3 is loaded, but also for that presses a spring force in the transverse direction on the clamping piece 5, which the clamping piece in the direction of the clamping surface 4 of the hook 3 charged.

Bei der Ausführungsform nach den Fig. 2 bis 5 besitzt das Klemmstück 5 eine gewölbte Klemmfläche, deren Klemmbereich im wesentlichen parallel zu der ebenen Klemmfläche 4 des Hakens 3 verläuft, die von einem Einsatz gebildet wird. Die Klemmfläche 4 ist schräg zur Bewegungsrichtung des Klemmstückes 5 ausgerichtet.In the embodiment according to FIGS. 2 to 5 it has Clamping piece 5 has a curved clamping surface, the clamping area of which in substantially parallel to the flat clamping surface 4 of the hook 3 runs, which is formed by an insert. The clamping surface 4 is at an angle to the direction of movement of the clamping piece 5 aligned.

Auf der der Klemmfläche 4 gegenüberliegenden Seite ist das Klemmstück 5 mittels eines Führungselementes 12 geführt, das ebenfalls als ein an dem Haken 3 angebrachter Einsatz ausgebildet ist. Das Führungselement 12 bildet mit dem ihm zugeordneten Teil des Klemmstückes 5 eine gekrümmte Führungsbahn 13. Diese Führungsbahn 13 verläuft in Richtung zu der Spitze des Hakens 3 zunächst mit einer relativ starken Krümmung zu der Klemmfläche 4 des Hakens 3 und geht dann in einen Abschnitt über, der sich parallel zur Bewegungsrichtung des Klemmstückes 5 erstreckt, d.h. in Längsrichtung des Nehmergreifers. Die Krümmung hat beispielsweise die Form einer Parabel zweiten Grades oder auch höherer Ordnung oder die Form eines Kreissegmentes.On the side opposite the clamping surface 4 that is Clamping piece 5 guided by means of a guide element 12, the also designed as an insert attached to the hook 3 is. The guide element 12 forms with that assigned to it Part of the clamping piece 5 is a curved guideway 13. This guideway 13 runs towards the top of the hook 3 initially with a relatively strong curvature the clamping surface 4 of the hook 3 and then goes into a section over, which is parallel to the direction of movement of the Clamping piece 5 extends, i.e. in the longitudinal direction of the slave gripper. For example, the curvature has the shape of a parabola second degree or higher order or the form a segment of a circle.

In der Klemmposition, die in Fig. 2 dargestellt ist, wird die Belastungskraft der Feder 6 im wesentlichen zwischen der Klemmfläche 4 des Hakens und der Klemmfläche des Klemmstückes 5 aufgefangen, so daß mittels einer relativ schwachen Feder 6 eine relativ große Klemmkraft erhalten werden kann. Mittels einer relativ schwachen Feder 6 kann somit erreicht werden, daß ein Schußfaden sicher gehalten ist, ohne daß die Gefahr besteht, daß sich das Klemmstück 5 von der Klemmfläche 4 aufgrund von Beschleunigungen oder Verzögerungen und/oder äußeren Kräften löst. Diese kleine Federkraft führt dazu, daß entsprechend die Belastungen der Klemmflächen und des Führungselementes relativ klein sind, so daß entsprechend auch der Verschleiß reduziert ist. Auch die übrigen Elemente, beispielsweise die Achse 9, erfahren eine entsprechend geringe Belastung.In the clamping position, which is shown in Fig. 2, the Loading force of the spring 6 essentially between the Clamping surface 4 of the hook and the clamping surface of the clamping piece 5 collected, so that by means of a relatively weak spring 6th a relatively large clamping force can be obtained. through a relatively weak spring 6 can thus be achieved that a weft is held securely without the danger there is that the clamping piece 5 due to the clamping surface 4 of accelerations or decelerations and / or external Forces. This small spring force leads to the fact that correspondingly the loads on the clamping surfaces and the guide element are relatively small, so that accordingly wear is reduced. The other elements, too, for example the axis 9, experience a correspondingly low Burden.

Wie insbesondere aus Fig. 5 zu ersehen ist, ist das Klemmstück 5 mit einer gerundeten Rippe 14 in einer entsprechend gerundeten Längsnut 15 des Führungselementes 12 zum Bilden der Führung 13 geführt. Damit wird erreicht, daß das Klemmstück 5 auch quer zur Klemmbewegung geführt ist. Aufgrund der gerundeten Rippe 14 und der entsprechend gerundeten Längsnut 15 kann sich das Klemmstück 5 in gewissem Maße um seine Längsachse drehen, so daß sich die Klemmfläche des Klemmstücks 5 an die Klemmfläche 4 des Hakens anpassen kann. Durch diese runde Profilierung wird erreicht, daß die Herstellungstoleranzen relativ großzügig bemessen werden können. Würde die Führungsbahn 13 aus ebenen Flächen gebildet, so müßten enge Toleranzen eingehalten werden.As can be seen in particular from FIG. 5, the clamping piece is 5 with a rounded rib 14 in a corresponding rounded longitudinal groove 15 of the guide member 12 to form the guide 13 out. This ensures that the clamping piece 5 is also performed transversely to the clamping movement. Due to the rounded rib 14 and the correspondingly rounded longitudinal groove 15, the clamping piece 5 to a certain extent around his Rotate the longitudinal axis so that the clamping surface of the clamping piece 5 can adapt to the clamping surface 4 of the hook. By this round profile is achieved that the manufacturing tolerances can be measured relatively generously. Would the guideway 13 formed from flat surfaces, so should tight tolerances are observed.

Das Ausführungsbeispiel nach Fig. 6 bis 9 entspricht im Prinzip dem Ausführungsbeispiel nach Fig. 2 bis 5. Der Unterschied besteht darin, daß bei den Ausführungsbeispielen nach Fig. 6 bis 9 das Führungselement 12' als gerundete Längsrippe 15' ausgebildet ist, während das Klemmstück 5 entsprechend mit einer gerundeten Längsnut 14' versehen ist. Auch mit dieser Gestaltung werden die gleichen Vorteile erhalten, die bereits anhand von Fig. 2 bis 5 beschrieben wurden.The embodiment according to FIGS. 6 to 9 corresponds in principle the embodiment of FIGS. 2 to 5. The difference is that according to the embodiments 6 to 9, the guide element 12 'as a rounded longitudinal rib 15 'is formed, while the clamping piece 5 accordingly is provided with a rounded longitudinal groove 14 '. With this too Designing will get the same benefits that it already has have been described with reference to FIGS. 2 to 5.

Bei den Ausführungsbeispielen nach Fig. 10 bis 13 ist der Haken 3 mit einem Führungselement in Form einer Rolle 16 versehen, die an dem Haken 3 stationär angebracht oder drehbar gelagert ist. Um bei diesem Ausführungsbeispiel eine gekrümmte Führungsbahn 17 zu schaffen, ist das dem Haken 3 zugewandte, der Rolle 16 gegenüberliegende Ende des Klemmstückes 5 in geeigneter Weise profiliert. In der Klemmposition arbeitet ein parallel zur Bewegungsrichtung des Klemmstückes 5 oder zur Längsrichtung des gesamten Nehmergreifers verlaufender Abschnitt mit der Rolle 16 zusammen. Vor diesem Abschnitt liegt ein gekrümmter Bereich, so daß sich das Klemmstück 5 nach einem relativ kurzen Weg schnell von der Klemmfläche 4 hinwegbewegt oder auch wieder schnell dieser Klemmfläche 4 zugestellt werden kann.10 to 13 is the hook 3 provided with a guide element in the form of a roller 16, attached to the hook 3 stationary or rotatably mounted is. To be curved in this embodiment To create guideway 17 is the hook 3 facing, the roller 16 opposite end of the clamping piece 5 in a suitable Profiled way. Works in the clamping position parallel to the direction of movement of the clamping piece 5 or Section running longitudinally of the entire slave gripper with the roller 16 together. Before this section a curved area so that the clamping piece 5 after a relatively short path quickly moved away from the clamping surface 4 or quickly delivered this clamping surface 4 again can be.

Bei den Ausführungsformen nach Fig. 2 bis 5, 6 bis 9 und 10 bis 13 sind die Führungselemente 12, 12' und 16 in dem Bereich des Hakens 3 angeordnet, dem die Klemmfläche 4 gegenüberliegt. Wie dies anhand der Ausführungsbeispiele nach Fig. 14 bis 16, 17 bis 19 und 20 bis 22 dargestellt ist, ist es jedoch auch ohne weiteres möglich, diese Führungselemente an anderer Stelle anzuordnen.2 to 5, 6 to 9 and 10 13 to 13 are the guide elements 12, 12 'and 16 in the area arranged of the hook 3, which is opposite the clamping surface 4. As can be seen from the exemplary embodiments according to FIG. 14 to 16, 17 to 19 and 20 to 22 is shown however, it is also easily possible to use these guide elements to be arranged elsewhere.

Bei dem Ausführungsbeispiel nach Fig. 14 bis 16 ist ein Führungselement 12' entsprechend dem Ausführungsbeispiel nach Fig. 6 bis 9 von der Klemmfläche 4 des Hakens 3 hinweg in Richtung zu dem Hebel 8 hin versetzt.14 to 16 is a guide element 12 'according to the embodiment 6 to 9 from the clamping surface 4 of the hook 3 in Moved towards the lever 8.

Bei dem Ausführungsbeispiel nach Fig. 17 bis 19 ist eine Rolle 16 entsprechend dem Ausführungsbeispiel nach Fig. 10 bis 13 versetzt zu der Klemmfläche 4 des Hakens 3 angeordnet.17 to 19 is a role 16 corresponding to the embodiment of FIG. 10 to 13 offset to the clamping surface 4 of the hook 3.

Auch bei dem Ausführungsbeispiel nach Fig. 20 bis 23 ist ein Führungselement 18 in Form einer Kugel versetzt zu der Klemmfläche 4 des Hakens 3 angeordnet. Dieser Kugel 18 ist eine Führungsbahn 19 ähnlich der Führungsbahn 17 zugeordnet, die entsprechend ebenfalls zu der Klemmfläche 4 versetzt ist. Diese Führungsbahn 19 ist, wie insbesondere aus Fig. 23 zu ersehen ist, als eine im Querschnitt annähernd halbrunde Rille ausgebildet. 20 to 23 is also in the embodiment Guide element 18 in the form of a ball offset from the clamping surface 4 of the hook 3 arranged. This ball 18 is one Guide 19 similar to the guide 17 assigned to the is accordingly also offset to the clamping surface 4. This guideway 19 is closed, as shown in FIG. 23 in particular can be seen as an approximately semicircular groove in cross section educated.

Bei einem abgewandelten Ausführungsbeispiel ähnlich dem Ausführungsbeipiel nach Fig. 2 bis 5 ist das Führungselement 12 ein mit der Klemmfläche 4 einteiliger Einsatz, der in den Haken 3 eingesetzt ist.In a modified embodiment similar to the exemplary embodiment 2 to 5, the guide element 12th a one-piece insert with the clamping surface 4, which in the hook 3 is used.

Bei den Ausführungsbeispielen ist jeweils vorgesehen, daß die Führungsbahn 13, 17, 19 im Bereich der Klemmposition in Richtung der Bewegung des Klemmstückes 5 verläuft, d.h. in Längsrichtung des Nehmergreifers. Damit wird erreicht, daß die Bewegung des Klemmstückes in diesem Bereich ohne überlagerte Querbewegung von oder zu der Klemmfläche 4 des Hakens 3 erfolgt. Dieses Ziel kann auch dadurch erreicht werden, daß die Führungsbahn im Bereich der Klemmposition von der Klemmfläche 4 hinweg von der Greiferlängsrichtung abweicht, d.h. dem Klemmstück 5 im Bereich der Klemmposition eine von der Klemmfläche 4 hinweggerichtete Querbewegung überlagert wird.In the embodiments, it is provided that the Guide path 13, 17, 19 in the direction of the clamping position the movement of the clamping piece 5 runs, i.e. longitudinal the gripper. This ensures that the movement of the clamping piece in this area without superimposed Transverse movement from or to the clamping surface 4 of the hook 3 takes place. This goal can also be achieved in that the Guideway in the area of the clamping position from the clamping surface 4 deviates from the longitudinal direction of the gripper, i.e. the Clamping piece 5 in the area of the clamping position one of the clamping surface 4 transverse movement is superimposed.

Bei allen Ausführungsbeispielen, mit Ausnahme des Ausführungsbeispiels nach Fig. 10 bis 13, ist vorgesehen, daß sich das Klemmstück 5 in gewissem Maß um seine Längsachse verdrehen kann. Dadurch kann es sich mit seiner Klemmfläche parallel zur Klemmfläche 4 des Hakens 3 ausrichten und so einen Schußfaden über eine größere Länge sicher klemmen, wobei die Klemmkraft gleichmäßig über diese Länge des Schußfadens verteilt wird.In all exemplary embodiments, with the exception of the exemplary embodiment 10 to 13, it is provided that rotate the clamping piece 5 to a certain extent about its longitudinal axis can. This allows it to be parallel with its clamping surface Align to the clamping surface 4 of the hook 3 and so one Clamp weft securely over a longer length, the Clamping force evenly distributed over this length of the weft thread becomes.

Aus dem Vorstehenden wird ersichtlich, daß der Kern der Erfindung darin besteht, wie das Klemmstück 5 vor und bei Erreichen seiner Klemmposition geführt wird. Mit welchen Elementen das Klemmstück 5 in Längsrichtung zu dem Haken 3 belastet ist und/oder wie das Klemmstück 5 von dem Haken 3 zurückgezogen werden kann, ist weitgehend unerheblich. Es sind somit sehr verschiedene Konstruktionen denkbar, mit denen dieser Bewegungsablauf erzielt werden kann.From the foregoing it can be seen that the essence of the invention consists of how the clamping piece 5 before and when it is reached its clamping position is performed. With which elements the clamping piece 5 loaded in the longitudinal direction to the hook 3 and / or how the clamping piece 5 is withdrawn from the hook 3 is largely irrelevant. There are thus very different constructions are conceivable with which this sequence of movements can be achieved.

Claims (6)

  1. Taker gripper for a rapier tape weaving machine with a hook (3) which has a locking surface (4) running along the inside at an angle to the longitudinal direction of the gripper and with a locking part (5) which has a locking surface assigned to one of the locking surfaces on the hook which can essentially be moved from a locking position along the longitudinal direction of the gripper against a spring (6) into an open position and which is supported and guided on the side opposite the locking surfaces by means of a guide device,
    characterised in that
    the locking part (5, 5') is guided by the guide device between the open position and the locked position along a curved guide path (13, 17, 19) facing towards the locking surface (4) of the hook (3) in the area before the locked position and which changes into a section which runs essentially along the longitudinal direction of the gripper in the area of the locked position.
  2. Taker gripper in accordance with claim 1,
    characterised in that
    the locking part (5, 5') is additionally guided perpendicular to the locking movement by means of the guide.
  3. Taker gripper in accordance with claim 2,
    characterised in that
    the guide contains a guide element (12, 12', 16, 18) of the hook (3) and a guide element (14, 14') of the locking part (5, 5') which engage with each other, preventing any movement perpendicular to the longitudinal direction of the gripper but permitting the rotation of the locking part (5, 5') about a longitudinal axis.
  4. Taker gripper in accordance with claim 3,
    characterised in that
    the guide elements (12, 12') of the hook (3) and the locking part (5, 5') are designed as a rounded rib (14, 15') and a rounded channel (15, 14') which engage with each other.
  5. Taker gripper in accordance with one of claims 1 to 4,
    characterised in that
    the guide is positioned in an area opposite the locking surface (4) of the hook (3).
  6. Taker gripper in accordance with one of claims 1 to 4,
    characterised in that
    the guide is set back in relation to the area of the hook (3).
EP99940023A 1998-08-26 1999-07-19 Insertion gripper for a rapier loom Expired - Lifetime EP1108079B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19838781 1998-08-26
DE19838781A DE19838781A1 (en) 1998-08-26 1998-08-26 Slave gripper for a rapier weaving machine
PCT/EP1999/005140 WO2000012797A1 (en) 1998-08-26 1999-07-19 Insertion gripper for a rapier loom

Publications (2)

Publication Number Publication Date
EP1108079A1 EP1108079A1 (en) 2001-06-20
EP1108079B1 true EP1108079B1 (en) 2002-10-23

Family

ID=7878776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99940023A Expired - Lifetime EP1108079B1 (en) 1998-08-26 1999-07-19 Insertion gripper for a rapier loom

Country Status (5)

Country Link
US (1) US6352087B1 (en)
EP (1) EP1108079B1 (en)
AT (1) ATE226655T1 (en)
DE (2) DE19838781A1 (en)
WO (1) WO2000012797A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502006002809D1 (en) * 2006-01-06 2009-03-26 Sultex Ag Bringer rapier for a rapier loom

Family Cites Families (8)

* 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
DE3366208D1 (en) * 1983-04-18 1986-10-23 Rueti Ag Maschf Gripper for inserting a weft thread into a gripper weaving machine
EP0146663B1 (en) * 1983-12-14 1988-03-02 GebràœDer Sulzer Aktiengesellschaft Weft inserting device for a needle loom
CH670262A5 (en) * 1986-02-13 1989-05-31 Sulzer Ag
IT1255629B (en) * 1992-05-22 1995-11-09 Luciano Corain TRACTION GRIPPER PERFECTED FOR TEXTILE FRAME
IT1254987B (en) * 1992-06-23 1995-10-11 Luciano Corain IMPROVEMENT IN A TRACTION GRIPPER FOR TEXTILE FRAME
IT1274589B (en) * 1994-08-05 1997-07-18 Nuovo Pignone Spa IMPROVED SYSTEM OF GRIPPING AND TIGHTENING THE WEFT IN THE TRACTION GRIPPER OF A TEXTILE FRAME
DE59606724D1 (en) * 1996-06-14 2001-05-10 Sulzer Textil Ag Rueti Holer rapier for a rapier weaving machine

Also Published As

Publication number Publication date
ATE226655T1 (en) 2002-11-15
EP1108079A1 (en) 2001-06-20
DE59903197D1 (en) 2002-11-28
US6352087B1 (en) 2002-03-05
WO2000012797A1 (en) 2000-03-09
DE19838781A1 (en) 2000-03-02

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