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EP0533106A1 - Control device for the gripper heads of looms - Google Patents

Control device for the gripper heads of looms Download PDF

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Publication number
EP0533106A1
EP0533106A1 EP92115762A EP92115762A EP0533106A1 EP 0533106 A1 EP0533106 A1 EP 0533106A1 EP 92115762 A EP92115762 A EP 92115762A EP 92115762 A EP92115762 A EP 92115762A EP 0533106 A1 EP0533106 A1 EP 0533106A1
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EP
European Patent Office
Prior art keywords
cam
axis
control mechanism
mechanism according
lever
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Granted
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EP92115762A
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German (de)
French (fr)
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EP0533106B1 (en
Inventor
Johnny Debaes
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N.V. MICHEL VAN DE WIELE
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Individual
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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
    • D03D47/26—Travelling-wave-shed looms
    • 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

Definitions

  • the invention relates to a mechanism for opening the rapier heads on a weaving machine that works with rapiers.
  • the opening of the gripper heads is controlled by a set of rod transmissions.
  • the drive of the rod heads is sometimes ensured from a cam disk with a return spring.
  • this solution no longer achieves the working speed of the weaving machines that can be achieved today; in particular, it is 400 revolutions per minute in double rapier weaving machines.
  • the control mechanism for the inevitably controlled opening of rapier heads according to the invention aims to solve the above-mentioned problem in order to remedy these disadvantages and also to allow a higher weaving speed.
  • the control mechanism for the inevitably controlled opening of rapier heads of a weaving machine according to the invention is characterized in that the opening of the rapier heads is inevitably controlled by means of rollers on a control lever which is directly connected to a reciprocating axis of a cam rocker arm, which is through the Control a double ridge curve back and forth and the rotation of the ridge curve is derived from the main axis.
  • a control mechanism according to the preamble of claim 10 is known from document DE-A-29 34 474.
  • the control lever pivotally mounted on the sley is connected via a link to the cam lever pivotally mounted on the weaving machine frame, which in turn scans an outer peripheral surface of the cam plate designed as a curved surface under the action of a biasing spring.
  • the height of the rapier rods is often reset in order to adapt the machine to the desired pile height of the double fabric.
  • the control elements attached to the control lever and each assigned to one of the two gripper heads, in particular in the form of rollers are each individually height-adjustable on the control lever.
  • At least one of the cam surfaces is designed as a cam ring surface which is concentric with the axis of rotation of the cam and essentially radially with the axis of rotation, for deflecting the curve follower resting on it in the direction parallel to the axis of rotation when the cam is rotating.
  • the axis of rotation of the cam disc can run horizontally when the joint pivot axis of the control lever and cam lever runs vertically and thus parallel to the main shaft of the weaving machine. This facilitates the drive of the control mechanism, in particular by means of a cardan connection.
  • the cam disc is formed with two cam ring surfaces which run essentially identically and which can be scanned simultaneously by two cam followers of the cam lever, the biasing spring can be omitted.
  • control mechanism for opening the rapier heads will emerge from the following description of a preferred embodiment of such a control mechanism for a double rapier weaving machine, without the invention in this way weaving machine is limited because it can also be used with a single rapier weaving machine. This description is illustrated with reference to the accompanying figures.
  • Figure 1 is a perspective view of a control mechanism according to the invention for a double rapier weaving machine.
  • FIG. 2 is a cross section through the control rollers of the mechanism shown in Figure 1.
  • the gripper heads (1) and (1 ') are each provided with a thread clamping lever (2) and (2') which opens under the pressure of two rollers (3) and (3 ').
  • rollers (3) and (3 ') are mounted on bearings (30) and (30') which are fastened in height-adjustable manner on axes (4) and (4 ') by means of screws and nuts (31) and (31') .
  • the axes (4) and (4 ') are themselves adjustable in length on the relevant control levers (5) and (5'). These control levers (5) and (5 ') are connected directly to an oscillation axis (6) of a cam lever (7).
  • This cam lever is provided with two cam rollers (8) and (9), which are arranged symmetrically with respect to a disc (10) which is provided with a double comb cam.
  • This double ridge curve runs in an oil bath inside a closed housing (11) which forms part of the support (12) of the control mechanism according to the invention.
  • This carrier (12) can be adjusted with respect to the weaving width on a crossbar (13) of the weaving machine.
  • this crossbar is provided with a groove (17) in which a projection (18) of the carrier (12) can be moved and fastened by means of a screw and a nut (19).
  • the axis (14) of the double comb cam disc (10), which belongs to the control mechanism of the gripper heads according to the invention, is coupled via a cardan joint (15) to a cardan axis (16) which is displaceable in another cardan shaft (20) and is screwed onto it by means of a sleeve (21) which is provided with two pressure pins (22).
  • the cardan axis (20) is normally driven from the main axis of the loom by known aids, not shown.
  • the slave grippers of the gripper heads can open at a fairly short command angle (e.g. 20 °).
  • the conversion of the rotary movement into an oscillatory movement takes place via a very short, kinematic chain. Because of the double ridge curves, there is an inevitable and play-free drive.
  • the whole of the control mechanism of the gripper heads is, as explained, very compact and can be arranged close to the spreader bars. A speed of 450 revolutions per minute can be obtained with a double rapier weaving machine.
  • the control device described can be easily adapted after changing the respective height position of the gripper bars lying vertically one above the other. Such a change in height position can take place when the pile height of the double fabric to be woven is changed.
  • the cam disc (10) it should be added that it has a curved ring surface (10a) and (10b) oriented radially to the axis (14) on the two opposite end faces, which run essentially the same way, so that the two cam rollers (8 , 9) roll on these surfaces essentially without play. In this way, there is a backlash-free forcible movement of the cam lever (7) and thus also the control lever (5) together with the rollers (3, 3 ').

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

Abstract

The invention relates to a control mechanism according to Claim 1, characterised in that the control lever (5 and 5%) is connected directly to an oscillating axle (6) of a curved lever (7) which moves to and fro under the control of a comb cam, thereby ensuring uninterrupted rotational movement from the main shaft. …<IMAGE>…

Description

Die Erfindung betrifft einen Mechanismus zum Öffnen der Greiferköpfe an einer Webmaschine, die mit Greifern arbeitet.The invention relates to a mechanism for opening the rapier heads on a weaving machine that works with rapiers.

Bei Greiferwebmaschinen besteht ein Problem, um beim Fertigstellen der Einführung des Schußfadens diesen im richtigen Augenblick von dem Nehmergreifer freizumachen. Falls der Schußfaden von dem Nehmergreifer zu früh freigegeben wird, dann springt der Schußfaden in dem Fach zurück, und es fehlt dann ein Stückchen Schußfaden in dem Gewebe an jener Webkante. Hierdurch entstehen Schußfehler; das erhaltene Gewebe ist hinsichtlich seiner Qualität nicht in Ordnung. Wenn andererseits der Schußfaden zu lang von dem Nehmergreifer festgehalten wird, dann entstehen lange Schußfadenenden außerhalb der Webkanten, wodurch die Verluste an Schußfaden zunehmen.There is a problem with rapier looms to clear the weft rapier at the right moment when the insertion of the weft is completed. If the weft is released too early by the take-up rapier, the weft springs back in the compartment and a piece of weft is missing in the fabric at that selvedge. This results in shot errors; the quality of the tissue obtained is incorrect. On the other hand, if the weft is held for too long by the take-up rapier, then long weft ends are created outside the selvedges, which increases the loss of weft.

Außerdem werden mit Doppelgreifer-Webmaschinen Gewebe mit unterschiedlicher Polhöhe gewebt. Dies bedeutet, daß die Greifer verschiedene Stellungen in der Höhe einnehmen können, und daß der Greiferabstand eingestellt werden soll. Daraus erfolgt, daß die Greiferkopfansteuerung auch in der Höhe und in gegenseitigem Abstand einstellbar sein soll entsprechend dem eingestellten Greiferabstand und der zu webenden Polhöhe.In addition, fabrics with different pile heights are woven with double rapier weaving machines. This means that the grippers can assume different positions in height and that the gripper distance should be adjusted. From this it follows that the gripper head control should also be adjustable in height and at a mutual distance in accordance with the set gripper distance and the pile height to be woven.

Bei den Greiferwebmaschinen kommt es darauf an, daß die Freigabe des Schußfadens durch den Nehmergreifer im richtigen Augenblick angesteuert werden kann, die obengenannten Nachteile ausbleiben.In the case of the rapier weaving machines, it is important that the release of the weft thread can be controlled by the slave rapier at the right moment, and the disadvantages mentioned above do not occur.

Um hier Abhilfe zu schaffen, wird das Öffnen der Greiferköpfe von einer Gesamtheit von Stangenübertragungen gesteuert. Der Antrieb der Stangenköpfe wird von einer Nockenscheibe aus mitunter auch noch mit einer Rückzugsfeder sichergestellt.To remedy this situation, the opening of the gripper heads is controlled by a set of rod transmissions. The drive of the rod heads is sometimes ensured from a cam disk with a return spring.

Diese kinematische Kette ist jedoch zu lang, und es entsteht infolge der unterschiedlichen Spielräume in den zahlreichen Scharnierpunkten und Lagerungen zuviel Spiel an dem Endhebel. Es entstehen nämlich in dem Endhebel Schwingungen, die die Öffnung des Nehmergreifers in Schwierigkeiten bringen. Diese Schwingungen verursachen eine Abnutzung der Stangenköpfe, die dann auch ausgewechselt werden müssen.However, this kinematic chain is too long and there is too much play due to the different play in the numerous hinge points and bearings on the end lever. This is because vibrations occur in the end lever, which cause difficulties in opening the slave gripper. These vibrations cause wear on the rod heads, which must then be replaced.

Außerdem ist mit dieser Lösung nicht mehr die heute zu erreichende Arbeitsgeschwindigkeit der Webmaschinen zu erzielen; insbesondere beträgt sie bei Doppelgreifer-Webmaschinen 400 Umdrehungen je Minute.In addition, this solution no longer achieves the working speed of the weaving machines that can be achieved today; in particular, it is 400 revolutions per minute in double rapier weaving machines.

Der Steuerungsmechanismus für das zwangsläufig gesteuerte Öffnen von Greiferköpfen gemäß der Erfindung hat zum Ziel, das obengenannte Problem zu lösen, um diese Nachteile zu beheben und auch eine höhere Webgeschwindigkeit zu erlauben.The control mechanism for the inevitably controlled opening of rapier heads according to the invention aims to solve the above-mentioned problem in order to remedy these disadvantages and also to allow a higher weaving speed.

Der Steuerungsmechanismus für das zwangsläufig gesteuerte Öffnen von Greiferköpfen einer Webmaschine gemäß der Erfindung ist dadurch gekennzeichnet, daß das Öffnen der Greiferköpfe zwangsläufig mittels Rollen an einem Steuerhebel gesteuert wird, der mit einer hin- und herschwingenden Achse eines Kurvenschwinghebels unmittelbar verbunden ist, der sich durch die Steuerung einer doppelten Kammkurve hin- und herbewegt und wobei die Rotation der Kammkurve von der Hauptachse abgeleitet wird.The control mechanism for the inevitably controlled opening of rapier heads of a weaving machine according to the invention is characterized in that the opening of the rapier heads is inevitably controlled by means of rollers on a control lever which is directly connected to a reciprocating axis of a cam rocker arm, which is through the Control a double ridge curve back and forth and the rotation of the ridge curve is derived from the main axis.

Aus dem Dokument DE-A-29 34 474 ist ein Steuermechanismus nach dem Oberbegriff des Anspruchs 10 bekannt. Der an der Weblade schwenkbar gelagerte Steuerhebel ist über einen Lenker mit dem am Webmaschinenrahmen schwenkbar gelagerten Kurvenhebel verbunden, der wiederum eine als Kurvenfläche ausgebildete Außenumfangfläche der Kurvenscheibe unter der Wirkung einer Vorspannfeder abtastet. Dies ergibt die eingangs beschriebenen Nachteile, nämlich sich addierendes Lagerspiel, was zu unerwünschten Schwingungen des Steuermechanismus führt mit erhöhter Verschleißanfälligkeit und reduzierter Präzision der Steuerung.A control mechanism according to the preamble of claim 10 is known from document DE-A-29 34 474. The control lever pivotally mounted on the sley is connected via a link to the cam lever pivotally mounted on the weaving machine frame, which in turn scans an outer peripheral surface of the cam plate designed as a curved surface under the action of a biasing spring. This results in the disadvantages described at the outset, namely an additive bearing play, which leads to undesirable vibrations of the control mechanism with increased susceptibility to wear and reduced precision of the control.

Zur Beseitigung dieser Nachteile werden die kennzeichnenden Merkmale des Anspruchs 10 vorgeschlagen. Anstelle der insgesamt vier Schwenklager des Standes der Technik wird erfindungsgemäß lediglich ein einziges benötigt. Auch ergibt sich eine mechanisch robuste Anordnung mit geringen hin- und herzubewegenden Massen.To eliminate these disadvantages, the characterizing features of claim 10 are proposed. Instead of the four pivot bearings of the prior art, only one is required according to the invention. There is also a mechanically robust arrangement with small masses to be moved back and forth.

Bei Doppelgreifer-Webmaschinen werden zur Anpassung der Maschine an die jeweils gewünschte Florhöhe des Doppelgewebes häufig die Greiferstangen in ihrer Höhenlage jeweils neu eingestellt. In diesem Falle ist es zur präzisen Steuerung der Öffnungsbewegung der beiden Greiferköpfe von Vorteil, wenn die am Steuerhebel angebrachten, jeweils einem der beiden Greiferköpfe zugeordneten Steuerelemente, insbesondere in Form von Rollen, am Steuerhebel jeweils für sich höhenverstellbar angebracht sind.In the case of double rapier weaving machines, the height of the rapier rods is often reset in order to adapt the machine to the desired pile height of the double fabric. In this case, for precise control of the opening movement of the two gripper heads, it is advantageous if the control elements attached to the control lever and each assigned to one of the two gripper heads, in particular in the form of rollers, are each individually height-adjustable on the control lever.

Von Vorteil ist es weiterhin, wenn wenigstens eine der Kurvenflächen als zur Drehachse der Kurvenscheibe konzentrische, zur Drehachse im wesentlichen radial verlaufende Kurvenringfläche ausgebildet ist zur Auslenkung des an ihr anliegenden Kurvenfolgers in Richtung parallel zur Drehachse bei Drehung der Kurvenscheibe. Die Drehachse der Kurvenscheibe kann bei vertikal verlaufender, gemeinsamer Schwenkachse von Steuerhebel und Kurvenhebel horizontal verlaufen und damit parallel zur Hauptwelle der Webmaschine. Dies erleichtert den Antrieb des Steuerungsmechanismus insbesondere mittels Kardanverbindung.It is also advantageous if at least one of the cam surfaces is designed as a cam ring surface which is concentric with the axis of rotation of the cam and essentially radially with the axis of rotation, for deflecting the curve follower resting on it in the direction parallel to the axis of rotation when the cam is rotating. The axis of rotation of the cam disc can run horizontally when the joint pivot axis of the control lever and cam lever runs vertically and thus parallel to the main shaft of the weaving machine. This facilitates the drive of the control mechanism, in particular by means of a cardan connection.

Wenn in Weiterbildung der Erfindung die Kurvenscheibe mit zwei im wesentlichen gleich verlaufenden Nockenringflächen ausgebildet ist, die von zwei Kurvenfolgern des Kurvenhebels gleichzeitig abtastbar sind, kann die Vorspannfeder entfallen.If, in a further development of the invention, the cam disc is formed with two cam ring surfaces which run essentially identically and which can be scanned simultaneously by two cam followers of the cam lever, the biasing spring can be omitted.

Weitere Merkmale und Vorteile des Steuerungsmechanismus für das Öffnen der Greiferköpfe gemäß der Erfindung werden aus der sich hier anschließenden Beschreibung einer bevorzugten Ausführungsform eines derartigen Steuerungsmechanismus für eine Doppelgreifer-Webmaschine hervorgehen, ohne daß die Erfindung auf diese Art Webmaschine beschränkt wird, da jene auch bei einer Einzelgreifer-Webmaschine angewendet werden kann. Diese Beschreibung wird anhand der beigefügten Figuren veranschaulicht.Further features and advantages of the control mechanism for opening the rapier heads according to the invention will emerge from the following description of a preferred embodiment of such a control mechanism for a double rapier weaving machine, without the invention in this way weaving machine is limited because it can also be used with a single rapier weaving machine. This description is illustrated with reference to the accompanying figures.

Figur 1 ist eine perspektivische Wiedergabe eines Steuerungsmechanismus gemäß der Erfindung für eine Doppelgreifer-Webmaschine.Figure 1 is a perspective view of a control mechanism according to the invention for a double rapier weaving machine.

Figur 2 ist ein Querschnitt durch die Steuerrollen des in Figur 1 dargestellten Mechanismus.Figure 2 is a cross section through the control rollers of the mechanism shown in Figure 1.

Wie in Figur 1 dargestellt, sind die Greiferköpfe (1) und (1') jeweils mit einem Fadenklemmhebel (2) bzw. (2') versehen, die unter dem Druck zweier Rollen (3) und (3') aufgeht.As shown in Figure 1, the gripper heads (1) and (1 ') are each provided with a thread clamping lever (2) and (2') which opens under the pressure of two rollers (3) and (3 ').

Die Rollen (3) und (3') sind an Lagern (30) und (30') montiert, die mittels Schrauben und Muttern (31) bzw. (31') auf Achsen (4) und (4') höhenverstellbar festgemacht sind.The rollers (3) and (3 ') are mounted on bearings (30) and (30') which are fastened in height-adjustable manner on axes (4) and (4 ') by means of screws and nuts (31) and (31') .

Die Achsen (4) und (4') sind selbst auf den betreffenden Steuerhebeln (5) bzw. (5') in der Länge einstellbar. Diese Steuerhebel (5) und (5') sind unmittelbar mit einer Schwingachse (6) eines Kurvenhebels (7) verbunden. Dieser Kurvenhebel ist mit zwei Kurvenröllchen (8) und (9) versehen, die hinsichtlich einer Scheibe (10) symmetrisch angeordnet sind, welche mit einer doppelten Kammkurve versehen ist. Diese doppelte Kammkurve läuft in einem Ölbad innerhalb eines geschlossenen Gehäuses (11), das einen Teil des Trägers (12) des Steuerungsmechanismus gemäß der Erfindung bildet. Dieser Träger (12) ist an einem Querbalken (13) der Webmaschine hinsichtlich der Webbreite einstellbar. Dafür ist dieser Querbalken mit einer Rille (17) versehen, in der ein Vorsprung (18) des Trägers (12) verschoben und mittels einer Schraube und einer Mutter (19) festgemacht werden kann.The axes (4) and (4 ') are themselves adjustable in length on the relevant control levers (5) and (5'). These control levers (5) and (5 ') are connected directly to an oscillation axis (6) of a cam lever (7). This cam lever is provided with two cam rollers (8) and (9), which are arranged symmetrically with respect to a disc (10) which is provided with a double comb cam. This double ridge curve runs in an oil bath inside a closed housing (11) which forms part of the support (12) of the control mechanism according to the invention. This carrier (12) can be adjusted with respect to the weaving width on a crossbar (13) of the weaving machine. For this purpose, this crossbar is provided with a groove (17) in which a projection (18) of the carrier (12) can be moved and fastened by means of a screw and a nut (19).

Fernerhin ist die Achse (14) der doppelten Kammnockenscheibe (10), die zum Steuerungsmechanismus der Greiferköfpe gemäß der Erfindung gehört, über ein Kardangelenk (15) an eine Kardanachse (16) gekoppelt, die in einer anderen Kardanachse (20) verschiebbar ist und daran mittels eines Manchons (21) festgeschraubt wird, der mit zwei Druckstiften (22) versehen ist. Die Kardanachse (20) wird normal von der Hauptachse der Webmaschine aus durch bekannte, nicht dargestellte Hilfsmittel angetrieben.Furthermore, the axis (14) of the double comb cam disc (10), which belongs to the control mechanism of the gripper heads according to the invention, is coupled via a cardan joint (15) to a cardan axis (16) which is displaceable in another cardan shaft (20) and is screwed onto it by means of a sleeve (21) which is provided with two pressure pins (22). The cardan axis (20) is normally driven from the main axis of the loom by known aids, not shown.

Mittels des Fadenklemmhebels (2) und (2') können sich die Nehmergreifer der Greiferköpfe unter einem ziemlich kurzen Befehlswinkel (z.B. 20°) öffnen. Die Umsetzung der Drehbewegung in eine Schwingungsbewegung geschieht über eine sehr kurze, kinematische Kette. Wegen der doppelten Kammkurven verfügt man über einen zwangsläufigen und spielfreien Antrieb. Die Gesamtheit des Steuerungsmechanismus der Greiferköpfe ist, wie erläutert, sehr kompakt und kann nahe an den Breithaltern angeordnet werden. Eine Geschwindigkeit von 450 Umdrehungen je Minute kann bei einer Doppelgreifer-Webmaschine erhalten werden.Using the thread clamping lever (2) and (2 '), the slave grippers of the gripper heads can open at a fairly short command angle (e.g. 20 °). The conversion of the rotary movement into an oscillatory movement takes place via a very short, kinematic chain. Because of the double ridge curves, there is an inevitable and play-free drive. The whole of the control mechanism of the gripper heads is, as explained, very compact and can be arranged close to the spreader bars. A speed of 450 revolutions per minute can be obtained with a double rapier weaving machine.

Aufgrund der vertikal orientierten Schwingachse (6) und der wahlweisen Höhenverstellbarkeit der Rollen (3,3') kann die beschriebene Steuereinrichtung ohne weiteres nach einer Änderung der jeweiligen Höhenposition der vertikal übereinanderliegenden Greiferstangen angepaßt werden. Eine derartige Höhenpositionänderung kann dann stattfinden, wenn die Florhöhe des jeweils zu webenden Doppelgewebes geändert wird. Zur Gestalt der Kurvenscheibe (10) sei nachgetragen, daß diese an den beiden einander gegenüberliegenden Stirnflächen jeweils eine radial zur Achse (14) orientierte Kurvenringfläche (10a) und (10b) aufweist, die im wesentlichen gleich verlaufen, so daß die beiden Kurvenröllchen (8,9) im wesentlichen spielfrei an diesen Flächen abrollen. Man erhält auf diese Weise eine spielfreie zwangsweise Hin- und Herbewegung von Kurvenhebel (7) und damit auch des Steuerhebels (5) samt den Rollen (3,3').Because of the vertically oriented oscillation axis (6) and the optional height adjustment of the rollers (3, 3 '), the control device described can be easily adapted after changing the respective height position of the gripper bars lying vertically one above the other. Such a change in height position can take place when the pile height of the double fabric to be woven is changed. Regarding the shape of the cam disc (10), it should be added that it has a curved ring surface (10a) and (10b) oriented radially to the axis (14) on the two opposite end faces, which run essentially the same way, so that the two cam rollers (8 , 9) roll on these surfaces essentially without play. In this way, there is a backlash-free forcible movement of the cam lever (7) and thus also the control lever (5) together with the rollers (3, 3 ').

Claims (15)

Steuerungsmechanismus zum zwangsläufig gesteuerten Öffnen von Greiferköpfen einer mit Greifern ausgerüsteten Webmaschine, dadurch gekennzeichnet, daß der Steuerhebel (5) und (5') direkt mit einer Schwingungsachse (6) eines Kurvenhebels (7) verbunden ist, die sich durch Ansteuerung mittels einer Kammkurve hin- und herbewegt, wobei die gleichförmige Drehbewegung der Kammkurve von der Hauptachse abgeleitet wird.Control mechanism for the inevitably controlled opening of rapier heads of a weaving machine equipped with rapiers, characterized in that the control lever (5) and (5 ') is connected directly to an oscillation axis (6) of a cam lever (7), which is controlled by actuation by means of a comb cam - and moved here, the uniform rotary movement of the ridge curve being derived from the main axis. Steuerungsmechanismus gemäß Anspruch 1, dadurch gekennzeichnet, daß der Steuerhebel (5) und (5') mit einer Achse (4) und (4') versehen ist, auf der eine Rolle (3) und (3') montiert ist, die auf den Fadenklemmhebel (2 bzw. 2') des mit ihr in Beziehung stehenden Greiferkopfes (1 oder 1') drückt.Control mechanism according to claim 1 , characterized in that the control lever (5) and (5 ') is provided with an axis (4) and (4') on which a roller (3) and (3 ') is mounted, which on presses the thread clamping lever (2 or 2 ') of the gripper head (1 or 1') related to it. Steuerungsmechanismus gemäß Anspruch 2, dadurch gekennzeichnet, daß die Rolle (3) und (3') auf einem Lager (30) und (30') montiert und auf der Achse (4) und (4') höhenverstellbar ist.Control mechanism according to claim 2, characterized in that the roller (3) and (3 ') is mounted on a bearing (30) and (30') and is height-adjustable on the axis (4) and (4 '). Steuerungsmechanismus gemäß Anspruch 1, dadurch gekennzeichnet, daß die Achse (4) und (4'), auf der die Druckrolle (3) und (3') montiert ist, auf dem Steuerhebel (5) und (5') in der Länge einstellbar ist.Control mechanism according to claim 1, characterized in that the length of the axis (4) and (4 ') on which the pressure roller (3) and (3') is mounted is adjustable on the control lever (5) and (5 ') is. Steuerungsmechanismus gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kurvenhebel (7), der die Schwingungsachse (6), mit der der Steuerhebel (5) und (5') verbunden ist, hin- und herbewegt, mit zwei Kurvenrollen (8) und (9) versehen ist, die hinsichtlich einer Scheibe (10), welche mit einer doppelten Kammkurve versehen ist, symmetrisch angeordnet ist.Control mechanism according to one of the preceding claims, characterized in that the cam lever (7), which reciprocates the oscillation axis (6) to which the control lever (5) and (5 ') is connected, with two cam rollers (8) and (9) is provided, which is arranged symmetrically with respect to a disc (10) which is provided with a double comb curve. Steuerungsmechanismus gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Scheibe (10) mit einer doppelten Kammkurve versehen ist, der in einem Ölbad innerhalb eines geschlossenen Gehäuses (11) läuft.Control mechanism according to one of the preceding claims, characterized in that the disc (10) is provided with a double ridge curve which runs in an oil bath within a closed housing (11). Steuerungsmechanismus gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich die mit einer doppelten Kammkurve versehene Scheibe (10) rund um eine Achse (14) unter der Steuerung einer Kardanachse (16) fortlaufend dreht, die von der Hauptachse der Webmaschine aus angetrieben wird, mit der die Achse (14) mit Hilfe eines Kardangelenkes (15) verbunden ist.Control mechanism according to one of the preceding claims, characterized in that the double-cam disc (10) rotates continuously around an axis (14) under the control of a cardan axis (16) which is driven from the main axis of the weaving machine, with which the axis (14) is connected by means of a universal joint (15). Steuerungsmechanismus gemäß Anspruch 7, dadurch gekennzeichnet, daß die verschiebbare und in der Länge einstellbare Kardanachse (16) in einer anderen Kardanachse (20) vorgesehen ist, die von der Hauptachse der Webmaschine aus angetrieben wird.Control mechanism according to claim 7, characterized in that the displaceable and length-adjustable cardan shaft (16) is provided in another cardan shaft (20) which is driven from the main axis of the weaving machine. Steuerungsmechanismus gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß er von einem Träger (12) getragen wird, der an einem Querbalken (13) der Webmaschine auf die Webbreite einstellbar ist.Control mechanism according to one of the preceding claims, characterized in that it is carried by a carrier (12) which can be adjusted to the weaving width on a crossbar (13) of the weaving machine. Steuerungsmechanismus zum zwangsweisen öffnen des Greiferkopfes (1,1') wenigstens eines Greifers einer Webmaschine nach einem der vorhergehenden Ansprüche oder dem Oberbegriff des Anspruchs 1, mit einem auf den Greiferkopf (1,1') einwirkenden, schwenkbar gelagerten Steuerhebel (5,5') und mit einem Kurvenantrieb aus einer Kurvenscheibe (10) mit wenigstens einer Kurvenfläche (10a,10b) und einem die Kurvenfläche der Kurvenscheibe (10) mit einem Kurvenfolger (8,9) abtastenden, schwenkbar gelagerten Kurvenhebel (7), der mit dem Steuerhebel (5,5') bewegungsverkoppelt ist, dadurch gekennzeichnet, daß der Steuerhebel (5,5') und der Kurvenhebel (7) eine gemeinsame Schwenkachse (6) aufweisen und starr miteinander verkoppelt sind.Control mechanism for forcibly opening the rapier head (1,1 ') of at least one rapier of a weaving machine according to one of the preceding claims or the preamble of claim 1, with a pivotably mounted control lever (5,5') acting on the rapier head (1,1 ') ) and with a cam drive consisting of a cam disc (10) with at least one cam surface (10a, 10b) and a pivotably mounted cam lever (7) which scans the cam surface of the cam disc (10) with a cam follower (8,9) and which is connected to the control lever (5,5 ') is motion-coupled, characterized in that the control lever (5,5') and the cam lever (7) have a common pivot axis (6) and are rigidly coupled to one another. Steuerungsmechanismus nach Anspruch 10, dadurch gekennzeichnet, daß die wenigstens eine Kurvenfläche (10a,10b) als zur Drehachse (14) der Kurvenscheibe konzentrische, zur Drehachse (14) im wesentlichen radial verlaufende Kurvenringfläche ausgebildet ist zur Auslenkung des an ihr anliegenden Kurvenfolgers in Richtung parallel zur Drehachse bei Drehung der Kurvenscheibe (10).Control mechanism according to claim 10, characterized in that the at least one cam surface (10a, 10b) is designed as a cam ring surface concentric to the axis of rotation (14) of the cam disk and essentially radially extending to the axis of rotation (14) for deflecting the cam follower adjacent to it in the direction parallel to the axis of rotation when the cam disc (10) rotates. Steuerungsmechanismus nach Anspruch 11, dadurch gekennzeichnet, daß die Kurvenscheibe (10) mit zwei im wesentlichen gleich verlaufenden Kurvenringflächen (10a,10b) ausgebildet ist, die von zwei Kurvenfolgern (8,9) des Kurvenhebels (7) gleichzeitig abtastbar sind.Control mechanism according to claim 11, characterized in that the cam disc (10) is formed with two essentially identical cam ring surfaces (10a, 10b) which can be scanned simultaneously by two cam followers (8, 9) of the cam lever (7). Steuerungsmechanismus nach Anspruch 12, dadurch gekennzeichnet, daß die beiden Kurvenringflächen (10a,10b) an beiden Stirnflächen der Kurvenscheibe (10) ausgebildet sind.Control mechanism according to claim 12, characterized in that the two cam ring surfaces (10a, 10b) are formed on both end faces of the cam disc (10). Steuerungsmechanismus nach einem der Ansprüche 10 - 13, dadurch gekennzeichnet, daß bei einer Doppelgreifer-Webmaschine mit vertikal übereinanderliegenden Greifern die gemeinsame Schwenkachse (6) im wesentlichen vertikal verläuft, und daß am Steuerhebel (5) zwei jeweils an einen Greiferkopf (1,1') angreifende, jeweils für sich höhenverstellbare Steuerelemente (Rollen 3,3') angebracht sind.Control mechanism according to one of claims 10-13, characterized in that in a double-rapier weaving machine with vertically superimposed rapiers, the common pivot axis (6) runs essentially vertically, and in that on the control lever (5) two each on a rapier head (1, 1 ' ) attacking, each height-adjustable control elements (rollers 3,3 ') are attached. Webmaschine, die mit wenigstens einem Greifer ausgerüstet und mit einem Steuerungsmechanismus nach einem der vorhergehenden Ansprüche zum öffnen des jeweiligen Greiferkopfes (1,1') versehen ist.Loom equipped with at least one rapier and provided with a control mechanism according to one of the preceding claims for opening the respective rapier head (1, 1 ').
EP92115762A 1991-09-16 1992-09-15 Control device for the gripper heads of looms Expired - Lifetime EP0533106B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100859 1991-09-16
BE9100859A BE1005396A3 (en) 1991-09-16 1991-09-16 Control mechanism for grab heads for looms.

Publications (2)

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EP0533106A1 true EP0533106A1 (en) 1993-03-24
EP0533106B1 EP0533106B1 (en) 1996-10-30

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EP92115762A Expired - Lifetime EP0533106B1 (en) 1991-09-16 1992-09-15 Control device for the gripper heads of looms

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US (1) US5271434A (en)
EP (1) EP0533106B1 (en)
JP (1) JPH05195372A (en)
KR (1) KR930006211A (en)
BE (1) BE1005396A3 (en)
DE (1) DE59207458D1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015059664A2 (en) * 2013-10-24 2015-04-30 Nv Michel Van De Wiele Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head
BE1028436B1 (en) 2020-06-25 2022-01-31 Vandewiele Nv GUIDE DEVICE IN A GRIPPER LOAVY MACHINE, GRIPPER LOAVY MACHINE AND PROCEDURE FOR REFORMING A GRIPPER LOAVING MACHINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1574626A (en) * 1967-08-12 1969-07-11
US3927699A (en) * 1974-10-29 1975-12-23 Rockwell International Corp Weft carrier control apparatus
DE2934474B1 (en) * 1979-08-25 1980-10-16 Dornier Gmbh Lindauer Device for the inevitable actuation of the clamping device of weft insertion elements in contactless weaving machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047028A (en) * 1958-09-10 1962-07-31 Sdruzeni Podniku Textilniho St Shredding means
ES345157A1 (en) * 1967-09-02 1968-10-16 Balaguer Golobart Device for presenting and cutting the selected weft threads in stationary weft looms
CH611354A5 (en) * 1975-04-17 1979-05-31 Dornier Gmbh Lindauer
JPH03161551A (en) * 1989-11-21 1991-07-11 Tsudakoma Corp Cleaning of rapier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1574626A (en) * 1967-08-12 1969-07-11
US3927699A (en) * 1974-10-29 1975-12-23 Rockwell International Corp Weft carrier control apparatus
DE2934474B1 (en) * 1979-08-25 1980-10-16 Dornier Gmbh Lindauer Device for the inevitable actuation of the clamping device of weft insertion elements in contactless weaving machines

Also Published As

Publication number Publication date
KR930006211A (en) 1993-04-21
US5271434A (en) 1993-12-21
BE1005396A3 (en) 1993-07-13
JPH05195372A (en) 1993-08-03
DE59207458D1 (en) 1996-12-05
EP0533106B1 (en) 1996-10-30

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