EP0533106B1 - Control device for the gripper heads of looms - Google Patents
Control device for the gripper heads of looms Download PDFInfo
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- EP0533106B1 EP0533106B1 EP92115762A EP92115762A EP0533106B1 EP 0533106 B1 EP0533106 B1 EP 0533106B1 EP 92115762 A EP92115762 A EP 92115762A EP 92115762 A EP92115762 A EP 92115762A EP 0533106 B1 EP0533106 B1 EP 0533106B1
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- European Patent Office
- Prior art keywords
- cam
- shaft
- gripper
- control mechanism
- mechanism according
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- 238000009941 weaving Methods 0.000 claims description 23
- 230000033001 locomotion Effects 0.000 claims description 15
- 239000004744 fabric Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
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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
- D03D47/26—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 the automatically controlled opening of at least one rapier head of a weaving machine equipped with at least one rapier head according to the preamble of claim 1.
- 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.
- a control mechanism is known from DE-B-29 34 474.
- an arm is attached in a rotationally fixed manner on a shaft in the area of one end thereof.
- a control lever is in turn pivotally attached to the arm with another end thereof about an axis which runs essentially parallel to the weaving shaft.
- the control lever actuates a clamping device in which the weft thread is clamped and from which the weft thread is released when actuated by the control lever.
- the pivoting movement of the control lever with respect to the arm is controlled by a rocking lever, which in turn is pivotably mounted on a part fixed to the weaving machine about an axis parallel to the weaving shaft.
- the rocker arm is coupled to the control lever via a coupling, so that when the rocker arm pivots, this rocking motion is transmitted to the control lever and this is also pivoted with respect to the arm.
- the pivoting movement of the control lever is in turn controlled by a control cam provided on an eccentric, against which the rocking lever rests via a scanning roller.
- the eccentric 9 is in turn rotatable about an axis running essentially parallel to the shutter shaft and thus the pivot axes of the control lever and the rocking lever.
- the invention further relates to a weaving machine equipped with the control mechanism according to the invention.
- 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.
- 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 head 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 shaft (20) is normally driven from the main axis of the weaving machine by known aids, not shown.
- the slave grippers of the gripper heads can open at a rather 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 vertically superimposed gripper rods. Such a change in height position can take place if the pile height of the double fabric to be woven is changed.
- 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, a backlash-free movement of the cam lever (7) and thus also the control lever (5) together with the rollers (3, 3 ') is obtained.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
Die Erfindung betrifft einen Mechanismus zum zwangsläufig gesteuerten Öffnen von wenigstens einem Greiferkopf einer mit wenigstens einem Greiferkopf ausgerüsteten Webmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a mechanism for the automatically controlled opening of at least one rapier head of a weaving machine equipped with at least one rapier head according to the preamble of
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 creates weft errors; the quality of the tissue obtained is incorrect. If, on the other hand, the weft thread is held too long by the take-up rapier, then long weft thread ends arise outside the selvedges, which increases the loss of weft thread.
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 take up different positions in height and that the gripper distance should be set. 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 gripper. These vibrations cause wear on the rod heads, which must then be replaced.
Ein Steuermechanismus gemäß dem Oberbegriff des Anspruchs 1 ist aus der DE-B-29 34 474 bekannt. Bei diesem bekannten Mechanismus ist ein Arm im Bereich eines Endes desselben drehfest auf einer Webladenwelle angebracht. Im Bereich seines anderen Endes ist an dem Arm ein Steuerhebel wiederum mit einem anderen Ende desselben um eine im wesentlichen parallel zur Webladenwelle verlaufende Achse schwenkbar angebracht. An seinem anderen Ende, d.h. mit der Steuerhebelspitze, betätigt der Steuerhebel eine Klemmvorrichtung, in welcher der Schußfaden festgeklemmt ist und von welcher der Schußfaden bei Betätigung durch den Steuerhebel freigegeben wird. Die Schwenkbewegung des Steuerhebels bezüglich des Arms wird durch einen Schwinghebel gesteuert, welcher wiederum um eine zur Webladenwelle parallele Achse schenkbar an einem an der Webmaschine feststehenden Teil gelagert ist. Der Schwinghebel ist über eine Koppel mit dem Steuerhebel gekoppelt, so daß bei einer Schwenkbewegung des Schwinghebels diese Schwenkbewegung auf den Steuerhebel übertragen wird und auch dieser bezüglich des Arms verschwenkt wird. Die Schwenkbewegung des Steuerhebels wird wiederum durch eine auf einem Exzenter vorgesehenen Steuerkurve gesteuert, an welcher der Schwinghebel über eine Abtastrolle anliegt. Dabei ist der Exzenter 9 wiederum um eine im wesentlichen zur Webladenwelle und somit den Schwenkachsen des Steuerhebels und des Schwinghebels parallel verlaufenden Achse drehbar.A control mechanism according to the preamble of
Bei diesem Mechanismus besteht jedoch das Problem, daß-zum Öffnen der Klemmvorrichtung, und somit zur Freigabe des Schußfadens, einerseits die Drehbewegung des Steuerhebels gesteuert werden muß und andererseits die Schwenkbewegung des Schwinghebels gesteuert werden muß. Die Überlagerung zweier Schwenkbewegungen, welche zu einer einzigen Schwenkbewegung des Steuerhebels bezüglich des Arms führen soll, führt jedoch zu einem komplexen Steuermechanismus. Es muß dabei jede der Schwenkbewegungen für sich sehr exakt gesteuert werden, um nicht zu einer Fehlfunktion des Steuerhebels zu führen. Darüberhinaus müssen die beiden Schwenkbewegungen des Arms und des Schwinghebels derart aufeinander abgestimmt werden, daß sie eine exakte Bewegung des Steuerhebels verursachen.With this mechanism, however, there is the problem that, on the one hand, the rotary movement of the control lever is controlled in order to open the clamping device and thus to release the weft thread must be and on the other hand the pivoting movement of the rocker arm must be controlled. However, the superimposition of two pivoting movements, which should lead to a single pivoting movement of the control lever with respect to the arm, leads to a complex control mechanism. Each of the swiveling movements must be controlled very precisely in order not to cause the control lever to malfunction. In addition, the two pivoting movements of the arm and the rocking lever must be coordinated with one another in such a way that they cause an exact movement of the control lever.
Es ist demgegenüber Aufgabe der vorliegenden Erfindung, einen Steuermechanismus zum zwangsläufigen Steuern von wenigstens einem Greiferkopf einer mit wenigstens einem Greifer ausgerüsteten Webmaschine vorzusehen, welcher bei einfachem Aufbau eine hochpräzise Steuerung des Öffnens des wenigstens einen Greiferkopfs, insbesondere bei hohen Webgeschwindigkeiten, ermöglicht. Erfindungsgemäß wird diese Aufgabe durch einen Steuermechanismus gemäß dem Anspruch 1 gelöst.In contrast, it is an object of the present invention to provide a control mechanism for inevitably controlling at least one rapier head of a weaving machine equipped with at least one rapier, which, with a simple construction, enables highly precise control of the opening of the at least one rapier head, in particular at high weaving speeds. According to the invention, this object is achieved by a control mechanism according to
In den Unteransprüchen sind vorteilhafte Ausgestaltungen des erfindungsgemäßen Steuermechanismus angegeben.Advantageous refinements of the control mechanism according to the invention are specified in the subclaims.
Die Erfindung betrifft ferner eine mit dem erfindungsgemäßen Steuermechanismus ausgestatteten Webmaschine.The invention further relates to a weaving machine equipped with the control mechanism according to the invention.
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 head 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 shaft (20) is normally driven from the main axis of the weaving machine 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 rather 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').Due to 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 vertically superimposed gripper rods. Such a change in height position can take place if 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, a backlash-free movement of the cam lever (7) and thus also the control lever (5) together with the rollers (3, 3 ') is obtained.
Claims (18)
- Control mechanism for the positively controlled opening of at least one gripper head (1, 1') of a weaving machine equipped with at least one gripper, comprising:- a control lever (5, 5') capable of being pivoted about a pivot shaft towards and away from the at least one gripper head (1, 1'),- gripper-head opening means (3, 3') for opening the at least one gripper head (1, 1'), the said gripper-head opening means (3, 3') being provided on the control lever (5, 5') in the region of an end of the control lever (5, 5') located near the gripper head, the gripper-head opening means (3, 3') being capable of being controlled by a reed-cam means (10) for opening the at least one gripper head (1, 1'), the said reed-cam means (10) being rotatable about a rotary shaft,characterized by a cam lever (7) which is coupled essentially rigidly in the region of the pivot shaft to the control lever (5, 5') for the joint pivoting movement about the pivot shaft and which, for the controlled pivoting movement, engages on the reed-cam means by means of an end portion of the said cam lever (7) remote from the pivot shaft.
- Control mechanism according to Claim 1, characterized by an oscillating shaft (6) arranged concentrically relative to the pivot shaft and rotatable about the pivot shaft, the control lever (5, 5') and the cam lever (7) being fixed to the oscillating shaft (6) in each case in the region of their ends located near the pivot shaft.
- Control mechanism according to Claim 1 or 2, characterized in that the rotatable reed-cam means (10) are rotatable by means of a main weaving-machine shaft.
- Control mechanism according to one of Claims 1 to 3, characterized in that the control lever (5, 5') is provided with a shaft (4, 4'), and in that the gripper-head opening means (3, 3') comprise at least one roller (3, 3'), which is mounted rotatably on the shaft (4, 4') and which, to open the at least one gripper head (1, 1'), presses onto a thread-clamping lever (2, 2') of the at least one gripper head (1, 1').
- Control mechanism according to Claim 4, characterized in that the at least one roller (3, 3') is mounted on the shaft (4, 4') vertically adjustably on a bearing (30, 30').
- Control mechanism according to Claim 4 or 5, characterized in that the shaft (4, 4') is mounted adjustably in length on the control lever (5, 5').
- Control mechanism according to one of the preceding claims, characterized in that the reed-cam means (10) comprise a reed-cam disc (10) which has a cam face on at least one end face of the latter.
- Control mechanism according to Claim 7, characterized in that the at least one cam face (10a, 10b) is designed as an essentially radially extending annular cam face concentric relative to a rotary shaft (14) of the reed-cam disc (10), for deflecting a cam follower of the cam lever (7) in the direction parallel to the rotary shaft during the rotation of the reed-cam disc (10), the said cam follower bearing on the said annular cam face.
- Control mechanism according to Claim 8, characterized in that the cam disc is designed with two essentially identically extending annular cam faces (10a 10b) which can be sensed simultaneously by two cam followers (8, 9) of the cam lever (7).
- Control mechanism according to Claim 9, characterized in that the two annular cam faces (10a, 10b) are formed in each case on opposite end faces of the reed-cam disc (10).
- Control mechanism according to one of Claims 9 or 10, characterized in that the cam lever (7) is provided with two cam rollers (8, 9) as cam followers, each of the rollers (8, 9) bearing in each case on one of the annular cam faces (10a, 10b).
- Control mechanism according to one of Claims 7 to 11, characterized in that the reed-cam disc (10) runs in an oil bath within a closed housing (11).
- Control mechanism according to one of Claims 8 to 12, characterized in that the reed-cam disc (10) is rotatable under the control of a cardan shaft (16), the cardan shaft (16) being driven by the main weaving-machine shaft and being connected to the rotary shaft (14) by means of a cardan joint (15).
- Control mechanism according to Claim 13, characterized in that the cardan shaft (16) is mounted displaceably and adjustably in length on a further cardan shaft (20), the further cardan shaft (20) being driven by the main weaving-machine shaft.
- Control mechanism according to one of the preceding claims, characterized in that it is carried by a carrier (12) which is adjustable to the weaving width on a transverse beam (13) of the weaving machine.
- Control mechanism according to one of Claims 1 to 15, characterized in that the weaving machine comprises a double gripper weaving machine with two grippers located vertically one above the other, and in that the pivot shaft, about which the control lever (5, 5') and the cam lever (7) are jointly pivotable, extends essentially vertically.
- Control mechanism according to Claim 16, characterized in that gripper-head opening means (3, 3') assigned to each gripper head (1, 1') are arranged on the control lever (5, 5'), and in that each of the gripper-head opening means (3, 3') is separately vertically adjustable.
- Weaving machine having at least one gripper and a control mechanism according to one of Claims 1 to 17, for the controlled opening of the gripper head (1, 1') of the at least one gripper.
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)
| Publication Number | Publication Date |
|---|---|
| EP0533106A1 EP0533106A1 (en) | 1993-03-24 |
| EP0533106B1 true EP0533106B1 (en) | 1996-10-30 |
Family
ID=3885707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92115762A Expired - Lifetime EP0533106B1 (en) | 1991-09-16 | 1992-09-15 | Control device for the gripper heads of looms |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5271434A (en) |
| EP (1) | EP0533106B1 (en) |
| JP (1) | JPH05195372A (en) |
| KR (1) | KR930006211A (en) |
| BE (1) | BE1005396A3 (en) |
| DE (1) | DE59207458D1 (en) |
Families Citing this family (2)
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3047028A (en) * | 1958-09-10 | 1962-07-31 | Sdruzeni Podniku Textilniho St | Shredding means |
| ES344323A1 (en) * | 1967-08-12 | 1968-10-01 | Balaguer Golobart | Improvements in the inserting elements of wire in telescopes with reserve of fixed frame. (Machine-translation by Google Translate, not legally binding) |
| ES345157A1 (en) * | 1967-09-02 | 1968-10-16 | Balaguer Golobart | Device for presenting and cutting the selected weft threads in stationary weft looms |
| US3927699A (en) * | 1974-10-29 | 1975-12-23 | Rockwell International Corp | Weft carrier control apparatus |
| CH611354A5 (en) * | 1975-04-17 | 1979-05-31 | Dornier Gmbh Lindauer | |
| 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 |
| JPH03161551A (en) * | 1989-11-21 | 1991-07-11 | Tsudakoma Corp | Cleaning of rapier |
-
1991
- 1991-09-16 BE BE9100859A patent/BE1005396A3/en not_active IP Right Cessation
-
1992
- 1992-07-31 US US07/922,502 patent/US5271434A/en not_active Expired - Lifetime
- 1992-08-24 KR KR1019920015160A patent/KR930006211A/en not_active Application Discontinuation
- 1992-09-14 JP JP4244592A patent/JPH05195372A/en active Pending
- 1992-09-15 EP EP92115762A patent/EP0533106B1/en not_active Expired - Lifetime
- 1992-09-15 DE DE59207458T patent/DE59207458D1/en not_active Expired - Fee Related
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 |
| EP0533106A1 (en) | 1993-03-24 |
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