EP0123005B1 - Gripper for inserting a weft thread into a gripper weaving machine - Google Patents

Gripper for inserting a weft thread into a gripper weaving machine Download PDF

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Publication number
EP0123005B1
EP0123005B1 EP83810160A EP83810160A EP0123005B1 EP 0123005 B1 EP0123005 B1 EP 0123005B1 EP 83810160 A EP83810160 A EP 83810160A EP 83810160 A EP83810160 A EP 83810160A EP 0123005 B1 EP0123005 B1 EP 0123005B1
Authority
EP
European Patent Office
Prior art keywords
gripper
clamping
clamping tongue
tongue
flank
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
Application number
EP83810160A
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German (de)
French (fr)
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EP0123005A1 (en
Inventor
Willy Rohr
Kurt Wollgarten
Rudolf Vogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Sulzer Rueti AG
Original Assignee
Maschinenfabrik Sulzer Rueti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Sulzer Rueti AG filed Critical Maschinenfabrik Sulzer Rueti AG
Priority to DE8383810160T priority Critical patent/DE3366208D1/en
Priority to EP83810160A priority patent/EP0123005B1/en
Priority to US06/595,722 priority patent/US4520851A/en
Publication of EP0123005A1 publication Critical patent/EP0123005A1/en
Application granted granted Critical
Publication of EP0123005B1 publication Critical patent/EP0123005B1/en
Expired legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to a gripper for the insertion of weft in a rapier weaving machine, with a clamping hook for the weft thread and an associated clamping tongue which can be displaced in the longitudinal direction of the gripper under spring action in a gripper frame, a flank of the clamping tongue head and a flank of the free end of the clamping hook cooperating therewith stand at an angle to the longitudinal direction of the gripper.
  • the invention has for its object to provide a gripper which is particularly improved in this regard.
  • the invention consists in that the other clamping hook flank - in comparison to the inclined position of the one clamping hook flank - is inclined in the opposite direction to the longitudinal direction of the gripper and forms a guide for the clamping tongue head during the opening movement of the clamping tongue.
  • the weft insertion mechanism contains two drive wheels 4 arranged on both sides of the machine, each for a flexible entry belt 5.
  • FIG. 1 only the catch-side mechanism is shown .
  • a rapier 7 is attached to bring the weft thread 10 into the shed
  • a taker gripper 6 is attached, through which the weft thread 10 is taken over in the middle of the shed by the taker gripper 6 and through the second half of the Shed is pulled.
  • the slave gripper 6 has a frame designated as a whole by 13, e.g. made of aluminum, which consists of a base plate 14 and two side walls 15, 16.
  • a clamping tongue 1 is slidably mounted (arrow 21).
  • the clamping tongue 17 engages with a fork-shaped part 22 a pin 18 fastened on the base plate 14 and continues to the left in FIG. 3 into a pull arm 24.
  • the clamping tongue 17 is thus pivotable about the pin 18 according to arrow 23.
  • the clamping tongue 17 has a larger one shown in Figs. 4, 5, attached to a connecting plate 50, e.g. made of hard metal clamping head 25, which - in the clamping position - is pressed under the action of a compression spring 27 together with the entire clamping tongue 17 into a hook 28 attached to the frame 13.
  • the hook has a free end 29, the flank 31 of which is inclined relative to the longitudinal direction (longitudinal axis 32) of the gripper 6. With the hook flank 31, a correspondingly obliquely running flank 35 formed on the clamping head 25 cooperates.
  • flank 37 which is reversely oblique with respect to the axis 32 of the gripper 6 with respect to the axis 32 of the gripper 6 and with which a corresponding obliquely flank 38 of the clamping head 25 cooperates.
  • Lamella 47 is attached to the pull arm 24 of the clamping tongue 17 eccentrically at 48 with respect to the pin 18 (lever arm 40).
  • the clamping tongue 17 is shifted to the left and at the same time - due to the eccentric force effect by lamella 47 - is pivoted counterclockwise by a small amount.
  • the clamping head 25 arrives in the opening position 25a indicated by dashed lines in FIG. 3, the flanks 37, 38 sliding on one another.
  • Wedge 51 On the side wall 15 there is also a wedge 51 with an oblique flank 52 which cooperates with a corresponding oblique flank 53 formed on the clamping tongue 17. During the left shift of the clamping tongue 17, the pivoting movement about the pin 18 is supported by the wedge 51. Wedge 51 also forms a counterpart to the flank 37 of the hook 29, which prevents vibrations of the clamping tongue 17 during its left movement and the superposed pivoting by 18.
  • a pin 61 is fastened on the base plate 14 and cooperates with a curved slot 62 of the clamping tongue 17.
  • the wedge 51 is omitted, since the pulling force directed towards the left in FIG. 3 and acting on the lamella 47 at 48 with respect to the pin 18 is arranged eccentrically (lever arm 40), nevertheless, arises in FIG Torque on the clamping tongue 17 directed counterclockwise by 18. As a result, the clamping head 25 is also moved into the open position 25a while the two flanks 37, 38 slide onto one another and thus in the shortest possible way and in the shortest possible time.
  • the tongue 17 can then optionally also be made of an elastic material, e.g. Plastic.
  • the head 25 can then be held under a bias of the tongue 17 in the clamping position shown in FIG. 4.
  • the flanks 37, 38 slide on one another under the pretension, so that at least the clamping head 25 of the tongue 17, apart from the longitudinal movement, experiences a pivoting movement with respect to the bearing point 18 (transverse movement to the longitudinal axis 32).
  • the bringer gripper 24 can also be equipped with clamping parts which have inclined flanks to produce a swiveling movement superposed on the translatory pulling movement.

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

Description

Die Erfindung betrifft einen Greifer für den Schussfadeneintrag bei einer Greiferwebmaschine, mit einem Klemmhaken für den Schussfaden und einer zugehörigen, in Greifer-Längsrichtung unter Federwirkung in einem Greifergestell verschiebbaren Klemmzunge, wobei eine Flanke des Klemmzungenkopfes und eine mit dieser zusammenwirkende Flanke des freien Endes des Klemmhakens schräg zur Greifer-Längsrichtung stehen.The invention relates to a gripper for the insertion of weft in a rapier weaving machine, with a clamping hook for the weft thread and an associated clamping tongue which can be displaced in the longitudinal direction of the gripper under spring action in a gripper frame, a flank of the clamping tongue head and a flank of the free end of the clamping hook cooperating therewith stand at an angle to the longitudinal direction of the gripper.

Bei einem bisherigen Greifer der genannten Art (DE-OS 3 033 201 = US-PS 4371 008) ist die Klemmzunge im Greifergestell so gelagert, dass sie beim Zurückziehen bzw. beim Öffnen der durch Klemmzungenkopf und Klemmhaken gebildeten Klemme lediglich in der Längsrichtung des Greifers verschoben werden kann. Dadurch entsteht der Nachteil, dass eine relativ grosse Rückziehbewegung der Klemmzunge erforderlich ist, bis der festgeklemmte Schussfaden an der Fadenklemme freigegeben wird. Dies gilt insbesondere für dickere Garne oder für Garne mit ungleicher oder rauher Oberfläche bzw. für Garne mit schwankender Dicke.In a previous gripper of the type mentioned (DE-OS 3 033 201 = US-PS 4371 008), the clamping tongue is mounted in the gripper frame in such a way that when the clamp is formed by the clamping tongue head and the clamping hook, it is retracted only in the longitudinal direction of the gripper can be moved. This creates the disadvantage that a relatively large retraction movement of the clamping tongue is required until the weft thread clamped on the thread clamp is released. This applies in particular to thicker yarns or to yarns with an uneven or rough surface or to yarns with a varying thickness.

Der Erfindung liegt die Aufgabe zugrunde, einen besonders in dieser Hinsicht verbesserten Greifer zu schaffen.The invention has for its object to provide a gripper which is particularly improved in this regard.

Die Erfindung besteht darin, dass die andere Klemmhakenflanke - im Vergleich zur Schrägstellung der einen Klemmhakenflanke - in entgegengesetzter Richtung zur Greifer-Längsrichtung schräg steht und eine Führung für den Klemmzungenkopf bei der Öffnungsbewegung der Klemmzunge bildet.The invention consists in that the other clamping hook flank - in comparison to the inclined position of the one clamping hook flank - is inclined in the opposite direction to the longitudinal direction of the gripper and forms a guide for the clamping tongue head during the opening movement of the clamping tongue.

Dadurch wird es möglich, der beim Öffnen der Fadenklemme eintretenden Rückziehenbewegung der Fadenklemme eine leichte Schwenkbewegung zu superponieren. Durch die resultierende Klemmzungenbewegung wird der Klemmzungenkopf rascher und auf kürzerem Weg von der Klemmflanke des Hakens abgehoben.This makes it possible to superpose a slight pivoting movement of the retracting movement of the thread clamp which occurs when the thread clamp is opened. As a result of the resulting movement of the clamping tongue, the tongue head is lifted from the clamping flank of the hook more quickly and in a shorter way.

Dadurch lässt sich vermeiden, dass z.B. bei der Herstellung von Mischgeweben, die aus Garnen verschiedener Beschaffenheit, z.B. Dicke oder Oberfläche bestehen, nach dem Öffnen der Klemme (bei Eintragsende) Schussfadenenden verschiedener Länge vorliegen. Vielmehr kann erreicht werden, dass die Schussfadenenden unabhängig von der Garnbeschaffenheit praktisch immer die gleiche Länge haben, z.B. unabhängig davon, ob ein dickerer oder dünnerer oder ein rauherer oder glatterer Faden eingetragen wird. Im übrigen lässt sich die Zeit bis zur vollständigen Freigabe des Schussfadens aus der Fadenklemme verkürzen bzw. der Rückziehweg der Klemmzunge kann kürzer gehalten werden.This can prevent e.g. in the production of blended fabrics made from yarns of various qualities, e.g. Thickness or surface exist, after opening the clamp (at the end of the entry) there are weft ends of different lengths. Rather, it can be achieved that the weft thread ends are practically always of the same length regardless of the yarn quality, e.g. regardless of whether a thicker or thinner or a rougher or smoother thread is inserted. In addition, the time until the weft thread is completely released from the thread clamp or the retraction path of the clamping tongue can be kept shorter.

Weitere Merkmale ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit der Zeichnung und den Ansprüchen.

  • Fig. 1 veranschaulicht einen Teil einer Vorderansicht einer Greifer-Webmaschine, an der die Erfindung ausgeführt ist,
  • Fig. 2 erläutert schematisch die Schusseintragsteile, in grösserem Massstab,
  • Fig. 3 ist eine Draufsicht auf einen Greifer der Webmaschine,
  • Fig. 4 und 5 sind zwei Detaildarstellungen des Greifers in verschiedenen Positionen und in grösserem Massstab,
  • Fig. 6 und 7 sind zwei den Fig. 4 und 5 entsprechende Darstellungen einer abgewandelten Bauart.
Further features emerge from the following description of exemplary embodiments in conjunction with the drawing and the claims.
  • 1 illustrates part of a front view of a rapier weaving machine on which the invention is carried out,
  • 2 schematically explains the weft insertion parts, on a larger scale,
  • 3 is a plan view of a rapier of the weaving machine,
  • 4 and 5 are two detailed representations of the gripper in different positions and on a larger scale,
  • 6 and 7 are two representations of a modified type corresponding to FIGS. 4 and 5.

Die Greifer-Webmaschine nach Fig. 1, 2 enthält ein Maschinengestell 1, einen Brustbaum 11 und einen Mittelträger 12. Der Schusseintragsmechanismus enthält zwei beidseits der Maschine angeordnete Antriebsräder 4 für je ein flexibles Eintragsband 5. In Fig. 1 ist nur der fangseitige Mechanismus dargestellt. Auf dem schussseitigen Eintragsband 5 ist ein Bringergreifer 7 zum Zubringen des Schussfadens 10 in das Webfach befestigt, auf dem fangseitigen Eintragsband 5 ist ein Nehmergreifer 6 angebracht, durch den der Schussfaden 10 in der Mitte des Webfaches vom Nehmergreifer 6 übernommen und durch die zweite Hälfte des Webfaches gezogen wird.1, 2 contains a machine frame 1, a breast beam 11 and a central support 12. The weft insertion mechanism contains two drive wheels 4 arranged on both sides of the machine, each for a flexible entry belt 5. In FIG. 1 only the catch-side mechanism is shown . On the weft-side entry belt 5, a rapier 7 is attached to bring the weft thread 10 into the shed, on the catch-side entry belt 5 a taker gripper 6 is attached, through which the weft thread 10 is taken over in the middle of the shed by the taker gripper 6 and through the second half of the Shed is pulled.

Der Nehmergreifer 6 besitzt ein als Ganzes mit 13 bezeichnetes Gestell, z.B. aus Aluminium, das aus einer Grundplatte 14 und zwei Seitenwandungen 15, 16 besteht. In dem Gestell 13 ist eine Klemmzunge 1 verschiebbar (Pfeil 21) gelagert. Die Klemmzunge 17 umgreift mit einem gabelförmigen Teil 22 einen auf der Grundplatte 14 befestigten Zapfen 18 und setzt sich in Fig. 3 nach links in einen Zugarm 24 fort. Die Klemmzunge 17 ist somit um den Zapfen 18 gemäss Pfeil 23 schwenkbar.The slave gripper 6 has a frame designated as a whole by 13, e.g. made of aluminum, which consists of a base plate 14 and two side walls 15, 16. In the frame 13, a clamping tongue 1 is slidably mounted (arrow 21). The clamping tongue 17 engages with a fork-shaped part 22 a pin 18 fastened on the base plate 14 and continues to the left in FIG. 3 into a pull arm 24. The clamping tongue 17 is thus pivotable about the pin 18 according to arrow 23.

An ihrem in Fig. 3 rechten Ende besitzt die Klemmzunge 17 einen in Fig. 4, 5 grösser dargestellten, auf einer Verbindungsplatte 50 angebrachten, z.B. aus Hartmetall bestehenden Klemmkopf 25, der - in Klemmstellung - unter der Wirkung einer Druckfeder 27 zusammen mit der ganzen Klemmzunge 17 in einen am Gestell 13 angebrachten Haken 28 gedrückt wird. Der Haken besitzt ein freies Ende 29, dessen Flanke 31 relativ zu der Längsrichtung (Längsachse 32) des Greifers 6 schräg gestellt ist. Mit der Hakenflanke 31 arbeitet eine am Klemmkopf 25 gebildete, entsprechend schräg verlaufende Flanke 35 zusammen.At its right end in Fig. 3, the clamping tongue 17 has a larger one shown in Figs. 4, 5, attached to a connecting plate 50, e.g. made of hard metal clamping head 25, which - in the clamping position - is pressed under the action of a compression spring 27 together with the entire clamping tongue 17 into a hook 28 attached to the frame 13. The hook has a free end 29, the flank 31 of which is inclined relative to the longitudinal direction (longitudinal axis 32) of the gripper 6. With the hook flank 31, a correspondingly obliquely running flank 35 formed on the clamping head 25 cooperates.

An dem Klemmhaken 28 befindet sich ferner eine - im Vergleich zu der Schrägflanke 31 - bezüglich der Achse 32 des Greifers 6 umgekehrt schräg verlaufende Flanke 37, mit der eine entsprechend schräg verlaufende Flanke 38 des Klemmkopfes 25 zusammenarbeitet.On the clamping hook 28 there is also a flank 37, which is reversely oblique with respect to the axis 32 of the gripper 6 with respect to the axis 32 of the gripper 6 and with which a corresponding obliquely flank 38 of the clamping head 25 cooperates.

Bei der in Fig. 3 dargestellten Klemmstellung der Teile ist der Faden 10 zwischen den Flanken 31, 35 festgeklemmt und wird gemäss Fig. 1 entsprechend Pfeil 41 nach links zur Fangseite hin gezogen. Sobald der Greifer 6 in die Führung 42 einläuft, wird ein auf der Grundplatte 14 bei 44 schwenkbar gelagerter Anschlag 45 von einem in Fig. 1 schematisch angedeuteten, ortsfesten Nocken 30 in die gestrichelt angedeutete Position 45a verschwenkt. Dadurch wird eine bei 46 an dem Anschlag 45 befestigte Zuglamelle 47 in Fig. 3 nach links gezogen.In the clamping position of the parts shown in FIG. 3, the thread 10 is clamped between the flanks 31, 35 and, according to FIG. 1, is pulled towards the catch side according to arrow 41 to the left. As soon as the gripper 6 runs into the guide 42, a stop 45 pivotally mounted on the base plate 14 at 44 is pivoted into the position 45a indicated by the dashed lines in FIG. As a result, a pull lamella 47 attached to the stop 45 at 46 is pulled to the left in FIG. 3.

Lamelle 47 ist bei 48 bezüglich des Zapfens 18 aussermittig (Hebelarm 40) an dem Zugarm 24 der Klemmzunge 17 befestigt. Dadurch wird die Klemmzunge 17 nach links verschoben und zugleich - infolge der aussermittigen Kraftwirkung durch Lamelle 47 - um einen geringen Betrag im Gegenzeigersinn verschwenkt. Hierdurch gelangt der Klemmkopf 25 in die in Fig. 3 gestrichelt angedeutete Öffnungsposition 25a, wobei die Flanken 37, 38 aufeinander gleiten.Lamella 47 is attached to the pull arm 24 of the clamping tongue 17 eccentrically at 48 with respect to the pin 18 (lever arm 40). As a result, the clamping tongue 17 is shifted to the left and at the same time - due to the eccentric force effect by lamella 47 - is pivoted counterclockwise by a small amount. As a result, the clamping head 25 arrives in the opening position 25a indicated by dashed lines in FIG. 3, the flanks 37, 38 sliding on one another.

Durch die Schrägstellung dieser beiden Flanken wird ermöglicht, dass Klemmzunge 17 während ihrer Linksverschiebung eine Drehbewegung um Zapfen 18 erhält, wodurch die Klemmflanken 31, 35 rascher in Öffnungsstellung gelangen und der Faden 10 schneller freigegeben wird, selbst wenn es sich um ein dickeres Schussgarn handeln sollte.The inclination of these two flanks enables the clamping tongue 17 to receive a rotary movement about the pin 18 during its left-hand movement, as a result of which the clamping flanks 31, 35 reach the opening position more quickly and the thread 10 is released more quickly, even if it is a thicker weft yarn .

An der Seitenwand 15 ist überdies ein Keil 51 mit einer Schrägflanke 52 angebracht, welche mit einer an der Klemmzunge 17 gebildeten, entsprechenden Schrägflanke 53 zusammenarbeitet. Während der Linksverschiebung der Klemmzunge 17 wird die Schwenkbewegung um den Zapfen 18 durch den Keil 51 unterstützt. Keil 51 bildet zugleich ein Gegenlanger bezüglich der Flanke 37 des Hakens 29, wodurch Schwingungen der Klemmzunge 17 während ihrer Linksbewegung und der superponierten Verschwenkung um 18 verhindert werden.On the side wall 15 there is also a wedge 51 with an oblique flank 52 which cooperates with a corresponding oblique flank 53 formed on the clamping tongue 17. During the left shift of the clamping tongue 17, the pivoting movement about the pin 18 is supported by the wedge 51. Wedge 51 also forms a counterpart to the flank 37 of the hook 29, which prevents vibrations of the clamping tongue 17 during its left movement and the superposed pivoting by 18.

Bei der Bauart nach Fig. 6, 7 ist auf der Grundplatte 14 ein Zapfen 61 befestigt, der mit einem gekrümmt verlaufenden Schlitz 62 der Klemmzunge 17 zusammenarbeitet.6, 7, a pin 61 is fastened on the base plate 14 and cooperates with a curved slot 62 of the clamping tongue 17.

Wenn die Klemmzunge 17 aus der in Fig. 6 dargestellten Klemmposition nach unten in die in Fig. 7 dargestellte Öffnungsstellung gemäss Pfeil 21 bewegt wird, gelangt das obere Ende des Schlitzes 62 über den Zapfen 61, wodurch die Klemmzunge 17 während ihrer Abwärtsbewegung eine Schwenkbewegung im Gegenzeigersinn erhält. Dadurch gelangt der Klemmkopf 25 in die in Fig. 7 dargestellte Öffnungsposition 25a, wobei die Flanken 37, 38 aufeinander gleiten.When the clamping tongue 17 is moved downward from the clamping position shown in FIG. 6 into the open position shown in FIG. 7 according to arrow 21, the upper end of the slot 62 passes over the pin 61, whereby the clamping tongue 17 pivots during its downward movement Receives counter-clockwise. As a result, the clamping head 25 reaches the opening position 25a shown in FIG. 7, the flanks 37, 38 sliding on one another.

Bei einer anderen Ausführungsform ist der Keil 51 weggelassen, dadurch, dass die in Fig. 3 nach links gerichtete, von der Lamelle 47 bei 48 angreifende Zugkraft bezüglich des Zapfens 18 aussermittig (Hebelarm 40) angeordnet ist, entsteht gleichwohl ein in Fig. 3 im Gegenzeigersinn um 18 gerichtetes Drehmoment an der Klemmzunge 17. Dadurch wird der Klemmkopf 25 ebenfalls unter Aufeinandergleiten der beiden Flanken 37, 38 und damit auf kürzestem Weg und in kürzester Zeit in die Öffnungsstellung 25a bewegt.In another embodiment, the wedge 51 is omitted, since the pulling force directed towards the left in FIG. 3 and acting on the lamella 47 at 48 with respect to the pin 18 is arranged eccentrically (lever arm 40), nevertheless, arises in FIG Torque on the clamping tongue 17 directed counterclockwise by 18. As a result, the clamping head 25 is also moved into the open position 25a while the two flanks 37, 38 slide onto one another and thus in the shortest possible way and in the shortest possible time.

Es ist aber auch eine Bauart möglich, bei der die Zuglamelle 47 in der Klemmzungenachse 32 und damit zentral zum Zapfen 18 angreift. Alsdann ist der Keil 51 erforderlich, durch den dafür gesorgt wird, dass die Klemmzunge ausser ihrer Längsbewegung eine Verschwenkung um Zapfen 18 entsprechend Pfeil 23 erfährt. Statt Keil 51 kann aber z.B. auch ein an der Seitenwand 16 angebrachter Magnet verwendet werden, durch den Zunge 17 während der in Fig. 3 nach links erfolgenden Bewegung nach oben gezogen und damit unter Verschwenkung gesetzt wird.However, a design is also possible in which the tension plate 47 engages in the clamping tongue axis 32 and thus centrally to the pin 18. Then the wedge 51 is required, by which it is ensured that the clamping tongue, in addition to its longitudinal movement, is pivoted about the pin 18 according to arrow 23. Instead of wedge 51, e.g. a magnet attached to the side wall 16 can also be used, by means of which the tongue 17 is pulled upwards during the movement to the left in FIG. 3 and is thus pivoted.

Die Zunge 17 kann dann gegebenenfalls auch aus einem elastischem Werkstoff, z.B. Kunststoff, bestehen. Der Kopf 25 kann dann unter einer Vorspannung der Zunge 17 in der Klemmposition nach Fig. 4 gehalten sein. Bei der Rückziehbewegung der Zunge 17 zwecks Öffnen der Klemme gleiten dann die Flanken 37, 38 unter der Vorspannung aufeinander, so dass mindestens der Klemmkopf 25 der Zunge 17 ausser der Längsbewegung eine Schwenkbewegung bezüglich des Lagerpunktes 18 (Querbewegung zur Längsachse 32) erfährt.The tongue 17 can then optionally also be made of an elastic material, e.g. Plastic. The head 25 can then be held under a bias of the tongue 17 in the clamping position shown in FIG. 4. When the tongue 17 is retracted to open the clamp, the flanks 37, 38 slide on one another under the pretension, so that at least the clamping head 25 of the tongue 17, apart from the longitudinal movement, experiences a pivoting movement with respect to the bearing point 18 (transverse movement to the longitudinal axis 32).

Entscheidend ist, dass in jedem Fall während der Öffnung der durch die Teile 29, 25 gebildeten Klemme ausser der Schiebebewegung der Zunge 17 eine Schwenkbewegung um den Zapfen 18 superponiert wird.It is crucial that, in any case, during the opening of the clamp formed by the parts 29, 25, in addition to the sliding movement of the tongue 17, a pivoting movement about the pin 18 is superposed.

In entsprechender Weise kann auch der Bringergreifer 24 mit Klemmteilen ausgerüstet sein, welche schräg verlaufende Flanken zur Erzeugung einer der translatorischen Ziehbewegung superponierten Schwenkbewegung aufweisen.Correspondingly, the bringer gripper 24 can also be equipped with clamping parts which have inclined flanks to produce a swiveling movement superposed on the translatory pulling movement.

Claims (5)

1. A gripper for weft picking in a gripper weaving machine, the gripper comprising: a clamping hook (28) for the weft yarn (10); and an associated clamping tongue (17) movable by spring force (27) lengthwise (32) of the gripper in a gripper frame (13), one flank (35) of the clamping tongue head (25) and a flank (31) co-operating therewith of the free end (29) of the clamping hook (28) being at an inclination to gripper length (32), characterised in that the other clamping hook flank (37) is, in comparison with the inclination of the first clamping hook flank (31), at an inclination in the opposite direction to gripper length (32) and forms a guide for the clamping tongue head (25) during the opening movement of the clamping tongue (17).
2. A gripper according to claim 1, characterised in that the clamping tongue (17), in addition to being movable lengthwise, is mounted for pivoting in the gripper frame (13).
3. A gripper according to claim 1 and 2, characterised by an inclined wedge (51) which is disposed on the gripper frame (13) and which during the opening movement of the clamping tongue (17) acts on the gripper pivot arm carrying the clamping tongue head (25).
4. A gripper according to claim 1 and 2, characterised in that one or the other of the clamping tongue (17) and gripper frame (13) has a pin (61) and the other one of the clamping tongue (17) and gripper frame (13) is formed with an inclined slot (62) which engages over the pin (61 to produce a pivoting of the clamping tongue (17) operative in the opening of the clamp (25, 28).
5. A gripper according to any of claims 2-4, characterised in that a return element (47) actuating the clamping tongue (17) engages eccentrically, as referred to the clamping tongue fulcrum (18), with a withdrawal arm (24) of the clamping tongue (17).
EP83810160A 1983-04-18 1983-04-18 Gripper for inserting a weft thread into a gripper weaving machine Expired EP0123005B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8383810160T DE3366208D1 (en) 1983-04-18 1983-04-18 Gripper for inserting a weft thread into a gripper weaving machine
EP83810160A EP0123005B1 (en) 1983-04-18 1983-04-18 Gripper for inserting a weft thread into a gripper weaving machine
US06/595,722 US4520851A (en) 1983-04-18 1984-04-02 Gripper for inserting the weft in a rapier weaving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83810160A EP0123005B1 (en) 1983-04-18 1983-04-18 Gripper for inserting a weft thread into a gripper weaving machine

Publications (2)

Publication Number Publication Date
EP0123005A1 EP0123005A1 (en) 1984-10-31
EP0123005B1 true EP0123005B1 (en) 1986-09-17

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EP83810160A Expired EP0123005B1 (en) 1983-04-18 1983-04-18 Gripper for inserting a weft thread into a gripper weaving machine

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US (1) US4520851A (en)
EP (1) EP0123005B1 (en)
DE (1) DE3366208D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233142A1 (en) * 1986-02-13 1987-08-19 GebràœDer Sulzer Aktiengesellschaft Gripper for weft insertion in a gripper weaving machine
EP0235078A1 (en) * 1986-02-13 1987-09-02 GebràœDer Sulzer Aktiengesellschaft Gripper for weft insertion in a gripper weaving machine
EP0394749A1 (en) * 1989-04-21 1990-10-31 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Weft carrying gripper with axially movable slider, for shuttleless weaving looms
WO2000005369A2 (en) 1998-07-20 2000-02-03 Curagen Corporation Nucleotide sequences and amino acid sequences of secreted proteins involved in angiogenesis

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IT1254987B (en) * 1992-06-23 1995-10-11 Luciano Corain IMPROVEMENT IN A TRACTION GRIPPER FOR TEXTILE FRAME
CH692457A5 (en) * 1997-07-29 2002-06-28 Gividi Italia Spa drawing gripper for weaving looms in spears and use the pliers.
DE19838781A1 (en) * 1998-08-26 2000-03-02 Picanol Nv Slave gripper for a rapier weaving machine
ATE410534T1 (en) * 2002-02-25 2008-10-15 Gividi Italia Spa THREAD CLAMP FOR A HOOK IN A HOOK WEAVING MACHINE
US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head
KR100498003B1 (en) * 2004-10-21 2005-07-01 대흥정밀공업 주식회사 Rapier and grippers for rapier loom
DE102005014107A1 (en) * 2005-03-22 2006-09-28 Picanol N.V. Receiving gripper with a hook-shaped insert and method for producing the hook-shaped insert
DE502006002809D1 (en) * 2006-01-06 2009-03-26 Sultex Ag Bringer rapier for a rapier loom
EP1918437A1 (en) * 2006-11-02 2008-05-07 Sultex AG Method and device for weft insertion
CN112522838A (en) * 2020-11-26 2021-03-19 南京玻璃纤维研究设计院有限公司 Weft insertion device

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JPS5240659A (en) * 1975-09-24 1977-03-29 Rieter Ag Maschf Receiving and gripping weft in loom having device for removing weft from bobbin fixed
CH625573A5 (en) * 1978-02-28 1981-09-30 Rueti Ag Maschf Taker gripper for weaving machines with extraction of the weft thread from fixed bobbins
CH639439A5 (en) * 1979-09-05 1983-11-15 Rueti Ag Maschf GRIPPER HEAD FOR WEAVING MACHINES WITH THE REMOVAL OF THE WIFE FROM FIXED REELS.
IT1132844B (en) * 1980-09-15 1986-07-09 Nuovo Pignone Spa IMPROVEMENTS IN THE GRINDING PLIERS FOR TEXTILE FRAMES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233142A1 (en) * 1986-02-13 1987-08-19 GebràœDer Sulzer Aktiengesellschaft Gripper for weft insertion in a gripper weaving machine
EP0235078A1 (en) * 1986-02-13 1987-09-02 GebràœDer Sulzer Aktiengesellschaft Gripper for weft insertion in a gripper weaving machine
EP0394749A1 (en) * 1989-04-21 1990-10-31 SOMET SOCIETA' MECCANICA TESSILE S.p.A. Weft carrying gripper with axially movable slider, for shuttleless weaving looms
WO2000005369A2 (en) 1998-07-20 2000-02-03 Curagen Corporation Nucleotide sequences and amino acid sequences of secreted proteins involved in angiogenesis

Also Published As

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US4520851A (en) 1985-06-04
DE3366208D1 (en) 1986-10-23
EP0123005A1 (en) 1984-10-31

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