EP0565885B1 - Drive for shuttleless looms which have weft carrier grippers moving back and forth - Google Patents

Drive for shuttleless looms which have weft carrier grippers moving back and forth Download PDF

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Publication number
EP0565885B1
EP0565885B1 EP93104309A EP93104309A EP0565885B1 EP 0565885 B1 EP0565885 B1 EP 0565885B1 EP 93104309 A EP93104309 A EP 93104309A EP 93104309 A EP93104309 A EP 93104309A EP 0565885 B1 EP0565885 B1 EP 0565885B1
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EP
European Patent Office
Prior art keywords
pinion
gear teeth
gear
shaft
engagement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93104309A
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German (de)
French (fr)
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EP0565885A1 (en
Inventor
Wilhelm Dipl.-Ing. Herrlein (Fh)
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication of EP0565885A1 publication Critical patent/EP0565885A1/en
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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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/275—Drive mechanisms
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/273—Rapier rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18272—Planetary gearing and slide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/1828—Cam, lever, and slide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19074—Single drive plural driven
    • Y10T74/19079—Parallel
    • Y10T74/19093—Spur and bevel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19674—Spur and bevel

Definitions

  • the invention relates to a gear for defenseless weaving machines with weft insertion elements which can be pushed back and forth alternately into the shed.
  • Such a transmission is e.g. known from DE-PS 37 31 990. It is used in a defenseless weaving machine to derive a rotary movement with an alternating direction of rotation from a continuous rotary movement of the main drive shaft, in order in this way to control a drive wheel for pushing the weft thread insertion members back and forth.
  • the weft thread to be inserted is inserted by grippers which are arranged at the tip of rods or at the tip of flexible bands.
  • the weft thread to be inserted is gripped at its end by these grippers by means of clamping devices outside the shed.
  • the rods or tapes are usually advanced in opposite directions from the two weaving machine sides into the shed. After the thread end has been transferred from a giving rapier to a receiving rapier, the rods are withdrawn again and the weft thread is completely inserted into the shed.
  • Various embodiments are known for clamping the weft thread on the hook and handing it over. However, these different possibilities are not important for the task to be solved here and therefore do not need to be described.
  • drive elements for the weft insertion member are required, which are moved alternately with different directions of rotation.
  • This can e.g. Be discs on which a flexible band is wound, or drive wheels with teeth that are in engagement with a perforation in flexible bands or with racks in rigid gripper bars.
  • the gears used for this use as the above-mentioned DE-PS shows, usually in a first gear part, continuously rotating cam or cam disks, of which a connecting rod is moved via oscillatingly mounted scanning rollers, which engages a tooth sector piece and turns it back and forth oscillating movement offset.
  • the oscillating movement of the tooth sector piece is taken off by a pinion and, via further gear members with the required speed ratio, onto a drive element for the weft insertion, e.g. a drive gear, which is in engagement with the toothing part of a gripper bar, or which engages in the perforation of a flexible belt, transmitted.
  • a drive element for the weft insertion e.g. a drive gear, which is in engagement with the toothing part of a gripper bar, or which engages in the perforation of a flexible belt, transmitted.
  • additional angle drives are also inserted here.
  • the swinging movement of the tooth sector piece is converted in this way into alternating rotary movement of the drive wheel.
  • the stroke of the oscillating movement can usually be changed by adjusting the connecting rod connection on the tooth sector piece. As a result, it is also possible to precisely adjust or change the stroke, that is to say the feed path of the gripper into the shed, as required.
  • Such a transmission design for generating an alternating back and forth movement for the weft insertion element in the form of a rapier of a weaving machine always has only one output shaft on the transmission output side. For this reason, only one drive gearwheel meshes with the teeth of the gripper bar.
  • the power transmission from the drive gear to the gripper rods leads to increased wear both on the drive gear and on the gripper rod. This wear must be avoided and the service life of the drive pinion and gripper rod increased.
  • the object of the invention is therefore to distribute the drive forces, which were previously transmitted from only one drive pinion to the gripper bars, to two drive pinions which are simultaneously engaged with the gripper bar.
  • the gear 1, 2 serves to convert a continuous rotational movement of the weaving machine main shaft 3 into an alternating right and left rotation movement of the drive pinions 4, 5 arranged on the output shafts 6, 7 for the weft insertion element 8.
  • cam disks 9, 10 are arranged, on the circumference of which there are contact rollers 11, 12. These scanning rollers 11, 12 are rotatably supported at the ends of an angle lever 13.
  • the angle lever 13 itself can swing back and forth around a machine-fixed bearing 14.
  • the oscillating movement of the angle lever 13 is guided to a connecting rod 16 by a lever arm 15 and transmitted through it to the tooth sector piece 17.
  • the tooth sector piece 17 is rotatably received in a machine-fixed bearing 18.
  • the connection between the connecting rod 16 and the tooth sector piece 17 is brought about by a joint 19.
  • This joint is adjustably arranged in an arcuate bearing 20 (elongated hole) in the tooth sector piece 17 in order in this way to ensure a stroke adjustment of the tooth sector piece 17 and thus also a stroke adjustment for the weft insertion element 8.
  • the tooth sector piece 17 has a circular toothing 21. With the toothing 21, a pinion 22 is engaged, which according to. Fig. 2 can be brought into engagement with the internal teeth 23 of a bevel gear 24.
  • the axis 25 of the bevel gear 24 lies in the vertical plane, vertically offset and parallel to the bearing axis 18 of the tooth sector piece 17th
  • FIG. 2 shows a top view of FIG. 1, partly in section. A part of the toothing 21 of the tooth sector piece 17 is visible below the pinion 22.
  • the pinion 22 engaged with the toothing 21 is designed as a sleeve and is rotatably arranged on the axis 25.
  • the axis 25 is rotatably mounted in the partial transmission 2.
  • the bevel gear 24 meshes with a bevel gear 26, the axis of which runs at right angles to the axis of the bevel gear 24 and forms the output axis 26a of the bevel gear transmission formed from the bevel gears 24 and 26 and known from DE-PS 37 31 990 within the sub-transmission 2.
  • a gear wheel 29 is connected in a rotationally fixed manner to the driven shaft 26a between the bearings 27, 28 receiving the driven shaft 26a.
  • two output shafts 6, 7 having teeth 30 are rotatably supported in the bearings 31, 32 in the partial transmission 2.
  • the toothing 30 is in constant engagement with the gear 29.
  • One end of the output shafts 6, 7 protrudes from the housing 33 enveloping the partial transmission 2.
  • a pinion 4 or 5 is rotatably arranged.
  • the pinions 4, 5 are in operative connection with the teeth of the weft insertion element 8 (see FIG. 1).
  • Fig. 3 shows a transmission structure in which, instead of the gear 29, an outer wheel 35 with internal teeth 34 is rotatably arranged between the bearings 27, 28 of the output shaft 26a thereon.
  • the output shafts 6, 7 carry, on their end leading into the transmission, a pinion 36 or 37, the toothing of which engages with the inner toothing 34 of the outer wheel 35.
  • the remaining structure of the partial transmission corresponds to that of FIG. 2.
  • Fig. 4 shows a transmission 2a with a different structure from the aforementioned transmissions.
  • the aforementioned partial transmissions 1 and 2 are omitted here.
  • a tooth sector piece 17 has an arcuate recess 38, the upper circular arc 38 'of which has a toothing 39 directed into the recess 38. With this toothing, the pinion 40 is engaged, which is rotatably connected to the shaft 41 of the outer wheel 35.
  • the shaft 41 of the outer wheel 35 lies in the vertical plane parallel to the bearing axis 18 of the toothed sector piece 17.
  • the outer wheel 35 has an internal toothing 34, into which, in the manner of a planetary gear, are arranged axially parallel and above the geometric longitudinal axis 42 of the shaft 41 on the output shafts 6, 7 Engage pinion 36.37.
  • the output shafts 6.7 form the output of the transmission.
  • the free end of the respective output shaft 6.7 takes a pinion 4.5 rotatably.
  • Both pinions 4, 5 are in engagement with the toothing of the weft insertion element 8, for example with a looper rod carrying the looper.
  • the weft thread insertion element 8 executes an alternating forward and backward movement according to double arrow 44.
  • FIG. 5 shows the gear 2a in a sectional view along the line II in FIG. 4.
  • the bearing axis 18 of the tooth sector piece 17 is accommodated in the bearings 49, 50 shown schematically.
  • the tooth sector piece 17 has an arcuate recess 38 with internal teeth 39 which meshes with the pinion 40.
  • the pinion 40 is coaxially connected to the outer wheel 35 and arranged in a rotationally fixed manner on the shaft 41 of the outer wheel 35.
  • the outer wheel 35 and the shaft 41 consist of one piece here.
  • the shaft 41 is also received in schematically illustrated bearings 47, 48 of the housing or in parts of the gear housing 33.

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

Description

Die Erfindung betrifft ein Getriebe für schützenlose Webmaschinen mit abwechselnd ins Webfach vor- und zurückschiebbaren Schußfadeneintragorganen.The invention relates to a gear for defenseless weaving machines with weft insertion elements which can be pushed back and forth alternately into the shed.

Ein derartiges Getriebe ist z.B. aus der DE-PS 37 31 990 bekannt. Es dient dazu bei einer schützenlosen Webmaschinen von einer kontinuierlichen Drehbewegung der Hauptantriebswelle eine Drehbewegung mit wechselnder Drehrichtung abzuleiten, um auf diese Weise ein Antriebsrad für das Vor- und Zurückschieben der Schußfadeneintragorgane zu steuern.Such a transmission is e.g. known from DE-PS 37 31 990. It is used in a defenseless weaving machine to derive a rotary movement with an alternating direction of rotation from a continuous rotary movement of the main drive shaft, in order in this way to control a drive wheel for pushing the weft thread insertion members back and forth.

Es sind schützenlose Webmaschinen bekannt, bei denen der einzutragende Schußfaden durch Greifer eingetragen wird, die an der Spitze von Stangen oder auch an der Spitze von flexiblen Bändern angeordnet sind. Der einzutragende Schußfaden wird an seinem Ende von diesen Greifern mittels Klemmvorrichtungen außerhalb des Webfaches erfaßt. Für den Schußeintrag werden die Stangen oder Bänder meist von den beiden Webmaschinenseiten her gegenläufig ins Webfach vorgeschoben. Nach Übergabe des Fadenendes von einem gebenden Greifer zu einem übernehmenden Greifer werden die Stangen wieder zurückgezogen und dabei der Schußfaden vollends in ganzer Länge ins Webfach eingetragen. Es sind dabei verschiedene Ausführungsformen bekannt, den Schußfaden am Greifer festzuklemmen und ihn zu übergeben. Diese unterschiedlichen Möglichkeiten sind aber für die hier zu lösende Aufgabe nicht von Bedeutung und brauchen deshalb nicht beschrieben zu werden.Protective weaving machines are known in which the weft thread to be inserted is inserted by grippers which are arranged at the tip of rods or at the tip of flexible bands. The weft thread to be inserted is gripped at its end by these grippers by means of clamping devices outside the shed. For the weft insertion, the rods or tapes are usually advanced in opposite directions from the two weaving machine sides into the shed. After the thread end has been transferred from a giving rapier to a receiving rapier, the rods are withdrawn again and the weft thread is completely inserted into the shed. Various embodiments are known for clamping the weft thread on the hook and handing it over. However, these different possibilities are not important for the task to be solved here and therefore do not need to be described.

In allen Fällen eines derartigen Schußfadeneintrages mit Greifern sind Antriebselemente für das Schußfadeneintragorgan erforderlich, die abwechselnd mit unterschiedlicher Drehrichtung bewegt werden. Das können z.B. Scheiben sein, auf die ein flexibles Band aufgewickelt wird, oder aber auch Antriebsräder mit einer Verzahnung, die in Eingriff mit einer Perforation in flexiblen Bändern oder mit Zahnstangen in starren Greiferstangen stehen. Die hierzu verwendeten Getriebe benutzen, wie die oben genannte DE-PS zeigt, üblicherweise in einem ersten Getriebeteil kontinuierlich umlaufende Kurven- oder Nockenscheiben, von denen über schwingend gelagerte Abtastrollen ein Pleuel bewegt wird, das an einem Zahnsektorstück angreift und dieses in eine hin- und herschwingende Bewegung versetzt. In einem nachfolgenden zweiten Getriebeteil wird die schwingende Bewegung des Zahnsektorstückes von einem Ritzel abgenommen und über weitere Getriebeglieder mit der erforderlichen Drehzahlübersetzung auf ein Antriebselement für den Schußeintrag, z.B. ein Antriebszahnrad, das in Eingriff mit dem Verzahnungsteil einer Greiferstange steht, oder das in die Perforation eines flexiblen Bandes eingreift, übertragen. Gegenbenenfalls sind hier auch noch zusätzliche Winkeltriebe eingefügt. Die Schwingbewegung des Zahnsektorstückes wird auf diese Weise in wechselnde Drehbewegung des Antriebsrades umgesetzt. Der Hub der Schwingbewegung kann meist durch Einstellung des Pleuelanschlusses am Zahnsektorstück verändert werden. Dadurch ist es auch möglich, den Hub, das heißt die Vorschubstrecke des Greifers in das Webfach, bedarfsweise exakt einzustellen oder zu verändern.In all cases of such a weft insertion with grippers, drive elements for the weft insertion member are required, which are moved alternately with different directions of rotation. This can e.g. Be discs on which a flexible band is wound, or drive wheels with teeth that are in engagement with a perforation in flexible bands or with racks in rigid gripper bars. The gears used for this use, as the above-mentioned DE-PS shows, usually in a first gear part, continuously rotating cam or cam disks, of which a connecting rod is moved via oscillatingly mounted scanning rollers, which engages a tooth sector piece and turns it back and forth oscillating movement offset. In a subsequent second gear part, the oscillating movement of the tooth sector piece is taken off by a pinion and, via further gear members with the required speed ratio, onto a drive element for the weft insertion, e.g. a drive gear, which is in engagement with the toothing part of a gripper bar, or which engages in the perforation of a flexible belt, transmitted. If necessary, additional angle drives are also inserted here. The swinging movement of the tooth sector piece is converted in this way into alternating rotary movement of the drive wheel. The stroke of the oscillating movement can usually be changed by adjusting the connecting rod connection on the tooth sector piece. As a result, it is also possible to precisely adjust or change the stroke, that is to say the feed path of the gripper into the shed, as required.

Eine derartige Getriebeausführung zur Erzeugung einer alternierenden Hin- und Herbewegung für das Schußfadeneintragorgan in Gestalt eines Greifers einer Webmaschine weist getriebeabtriebsseitig immer nur eine Abtriebswelle auf. Daher steht auch immer nur ein Antriebszahnrad mit der Verzahnung der Greiferstange in Eingriff. Die Antriebskraftübertragung von Antriebs-Zahnrad auf die Greiferstangen führt sowohl am Antriebszahnrad als auch an der Greiferstange zu erhöhtem Verschleiß. Diesen Verschleiß gilt es zu vermeiden und damit die Lebensdauer von Antriebsritzel und Greiferstange zu erhöhen.Such a transmission design for generating an alternating back and forth movement for the weft insertion element in the form of a rapier of a weaving machine always has only one output shaft on the transmission output side. For this reason, only one drive gearwheel meshes with the teeth of the gripper bar. The power transmission from the drive gear to the gripper rods leads to increased wear both on the drive gear and on the gripper rod. This wear must be avoided and the service life of the drive pinion and gripper rod increased.

Aufgabe der Erfindung ist es daher, die Antriebskräfte, die bisher von nur einem Antriebsritzel auf die Greiferstangen übertragen wurden, auf zwei gleichzeitig mit der Greiferstange in Eingriff stehenden Antriebsritzel zu verteilen.The object of the invention is therefore to distribute the drive forces, which were previously transmitted from only one drive pinion to the gripper bars, to two drive pinions which are simultaneously engaged with the gripper bar.

Damit kann mit einer erheblichen Reduzierung des Verschleißes sowohl an den antreibenden wie auch an dem getriebenen Element gerechnet werden.A significant reduction in wear on both the driving and the driven element can thus be expected.

Die Aufgabe wird erfindungsgemäß durch die in den Patentansprüchen 1 bis 3 genannten Merkmale gelöst.The object is achieved by the features mentioned in claims 1 to 3.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispieles näher beschrieben werden. Es zeigt:

Fig. 1
ein Getriebe für den Antrieb von Schußfadeneintragorganen für schützenlose Webmaschinen, verbunden mit der Hauptantriebswelle der Webmaschine in schematischer Darstellung,
Fig. 2
das Teilgetriebe (2) in der Draufsicht gemäß Fig. 1,
Fig. 3
das Teilgetriebe (2) in der Draufsicht gemäß Fig. 1 mit einem Außenrad für den Abtriebswellenantrieb,
Fig. 4
ein Getriebe (2a) in der Art eines Planetengetriebe ausgebildet in der Vorderansicht,
Fig. 5
das Getriebe (2a) gemäß Schnittlinie I-I nach Fig. 3.
The invention will be described below with reference to an embodiment. It shows:
Fig. 1
a transmission for the drive of weft insertion elements for defenseless weaving machines, connected to the main drive shaft of the weaving machine in a schematic representation,
Fig. 2
the partial transmission (2) in the plan view of FIG. 1,
Fig. 3
1 with an outer wheel for the output shaft drive,
Fig. 4
a front view of a gear (2a) in the form of a planetary gear,
Fig. 5
the gear (2a) according to section line II of FIG. 3rd

Zunächst sei anhand der Figur 1 der Gesamtaufbau des Getriebes 1,2 erläutert. Das Getriebe 1,2 dient der Umwandlung einer kontinuierlichen Rotationsbewegung der Webmaschinen-Hauptwelle 3 in eine abwechselnde Rechts- und Linksdrehbewegung der auf den Abtriebswellen 6,7 angeordneten Antriebsritzel 4,5 für das Schußfadeneintragorgan 8.First, the overall structure of the transmission 1, 2 will be explained with reference to FIG. 1. The gear 1, 2 serves to convert a continuous rotational movement of the weaving machine main shaft 3 into an alternating right and left rotation movement of the drive pinions 4, 5 arranged on the output shafts 6, 7 for the weft insertion element 8.

Auf der rotierenden Antriebswelle 3 sind Kurvenscheiben 9,10 angeordnet, an deren Umfang Abtastrollen 11,12 anliegen. Diese Abtastrollen 11,12 sind an den Enden eines Winkelhebels 13 drehbar gelagert. Der Winkelhebel 13 selbst kann um ein maschinenfestes Lager 14 hin- und herschwingen. Durch einen Hebelarm 15 wird die schwingende Bewegung des Winkelhebels 13 zu einem Pleuel 16 geleitet und durch dieses auf das Zahnsektorstück 17 übertragen. Das Zahnsektorstück 17 ist in einem maschinenfesten Lager 18 drehbeweglich aufgenommen.
Die Verbindung zwischen Pleuel 16 und Zahnsektorstück 17 wird durch ein Gelenk 19 bewirkt. Diese Gelenk ist in einem bogenförmigen Lager 20 (Langloch) im Zahnsektorstück 17 verstellbar angeordnet, um auf diese Weise eine Hubverstellung des Zahnsektorstückes 17 und damit auch eine Hubverstellung für das Schußeintragorgan 8 zu gewährleisten. Das Zahnsektorstück 17 besitzt eine kreisbogenförmige Verzahnung 21. Mit der Verzahnung 21 steht ein Ritzel 22 in Eingriff, welches gem. Fig. 2 mit der Innenverzahnung 23 eines Kegelrades 24 in Eingriff bringbar ist. Die Achse 25 des Kegelrades 24 liegt in der vertikalen Ebene, vertikal versetzt und parallel zur Lagerachse 18 des Zahnsektorstückes 17.On the rotating drive shaft 3, cam disks 9, 10 are arranged, on the circumference of which there are contact rollers 11, 12. These scanning rollers 11, 12 are rotatably supported at the ends of an angle lever 13. The angle lever 13 itself can swing back and forth around a machine-fixed bearing 14. The oscillating movement of the angle lever 13 is guided to a connecting rod 16 by a lever arm 15 and transmitted through it to the tooth sector piece 17. The tooth sector piece 17 is rotatably received in a machine-fixed bearing 18.
The connection between the connecting rod 16 and the tooth sector piece 17 is brought about by a joint 19. This joint is adjustably arranged in an arcuate bearing 20 (elongated hole) in the tooth sector piece 17 in order in this way to ensure a stroke adjustment of the tooth sector piece 17 and thus also a stroke adjustment for the weft insertion element 8. The tooth sector piece 17 has a circular toothing 21. With the toothing 21, a pinion 22 is engaged, which according to. Fig. 2 can be brought into engagement with the internal teeth 23 of a bevel gear 24. The axis 25 of the bevel gear 24 lies in the vertical plane, vertically offset and parallel to the bearing axis 18 of the tooth sector piece 17th

Fig. 2 zeigt teilweise im Schnitt eine Draufsicht auf Fig. 1. Ein Teil der Verzahnung 21 des Zahnsektorstückes 17 ist unterhalb des Ritzels 22 sichtbar.
Das mit der Verzahnung 21 in Eingriff stehende Ritzel 22 ist als Hülse ausgebildet und drehbar auf der Achse 25 angeordnet.FIG. 2 shows a top view of FIG. 1, partly in section. A part of the toothing 21 of the tooth sector piece 17 is visible below the pinion 22.
The pinion 22 engaged with the toothing 21 is designed as a sleeve and is rotatably arranged on the axis 25.

Die Achse 25 ist drehbar im Teilgetriebe 2 gelagert.The axis 25 is rotatably mounted in the partial transmission 2.

Das Kegelrad 24 kämmt mit einem Kegelrad 26, dessen Achse rechtwicklig zur Achse des Kegelrades 24 verläuft und die Abtriebsachse 26a des aus den Kegelzahnrädern 24 und 26 gebildeten und aus der DE-PS 37 31 990 bekannte Kegelradgetriebe innerhalb des Teilgetriebes 2 bildet.
Gemäß Fig. 2 ist zwischen den die Abtriebsachse 26a aufnehmenden Lagern 27,28 ein Zahnrad 29 drehfest mit der Abtriebsachse 26a verbunden.
Achsparallel zur Abtriebsachse 26a und beabstandet voneinander sind im Teilgetriebe 2 zwei eine Verzahnung 30 aufweisende Abtriebswellen 6,7 in den Lagern 31,32 drehend gelagert. Die Verzahnung 30 steht mit dem Zahnrad 29 in ständigem Eingriff.The bevel gear 24 meshes with a bevel gear 26, the axis of which runs at right angles to the axis of the bevel gear 24 and forms the output axis 26a of the bevel gear transmission formed from the bevel gears 24 and 26 and known from DE-PS 37 31 990 within the sub-transmission 2.
According to FIG. 2, a gear wheel 29 is connected in a rotationally fixed manner to the driven shaft 26a between the bearings 27, 28 receiving the driven shaft 26a.
Axially parallel to the output axis 26a and spaced apart from one another, two output shafts 6, 7 having teeth 30 are rotatably supported in the bearings 31, 32 in the partial transmission 2. The toothing 30 is in constant engagement with the gear 29.

Ein Ende der Abtriebswellen 6,7 ragt aus dem das Teilgetriebe 2 umhüllenden Gehäuse 33.
An dem freien Ende jeder der Abtriebswellen 6,7 ist ein Ritzel 4 bzw. 5 drehfest angeordnet. Die Ritzel 4,5 stehen mit der Verzahnung des Schußfadeneintragorgans 8 (s. Fig. 1) in Wirkverbindung.One end of the output shafts 6, 7 protrudes from the housing 33 enveloping the partial transmission 2.
At the free end of each of the output shafts 6, 7, a pinion 4 or 5 is rotatably arranged. The pinions 4, 5 are in operative connection with the teeth of the weft insertion element 8 (see FIG. 1).

Fig. 3 zeigt einen Getriebeaufbau, in dem anstelle des Zahnrades 29 ein Außenrad 35 mit Innenverzahnung 34 drehfest zwischen den Lagern 27,28 der Abtriebsachse 26a auf selbiger angeordnet ist. Die Abtriebswellen 6,7 tragen auf ihrem in das Getriebe führende Ende ein Ritzel 36 bzw. 37, dessen Verzahnung mit der Innenverzahnung 34 des Außenrades 35 in Eingriff steht. Der übrige Aufbau des Teilgetriebes entspricht dem nach Fig. 2.Fig. 3 shows a transmission structure in which, instead of the gear 29, an outer wheel 35 with internal teeth 34 is rotatably arranged between the bearings 27, 28 of the output shaft 26a thereon. The output shafts 6, 7 carry, on their end leading into the transmission, a pinion 36 or 37, the toothing of which engages with the inner toothing 34 of the outer wheel 35. The remaining structure of the partial transmission corresponds to that of FIG. 2.

Fig. 4 zeigt ein Getriebe 2a mit einem von den vorgennanten Getrieben abweichenden Aufbau. Auf die vorgenannten Teilgetriebe 1 und 2 wird hier verzichtet. Ein Zahnsektorstück 17 weist eine kreisbogenförmig verlaufende Ausnehmung 38 auf, deren oberer Kreisbogen 38' eine in die Ausnehmung 38 gerichtete Verzahnung 39 besitzt. Mit dieser Verzahnung steht das Ritzel 40 in Eingriff, welches drehfest mit der Welle 41 des Außenrades 35 verbunden ist. Die Welle 41 des Außenrades 35 liegt in der vertikalen Ebene parallel zur Lagerachse 18 des Zahnsektorstückes 17. Das Außenrad 35 besitzt eine Innenverzahnung 34, in die in Art eines Planetenradgetriebes achsparallel und oberhalb der geometrischen Längsachse 42 der Welle 41 auf den Abtriebswellen 6,7 angeordnete Ritzel 36,37 eingreifen. Die Abtriebswellen 6,7 bilden den Abtrieb des Getriebes. Das freie Ende der jeweiligen Abtriebswelle 6,7 nimmt ein Ritzel 4,5 drehfest auf. Beide Ritzel 4,5 stehen mit der Verzahnung des Schußfadeneintragorgans 8, z.B. mit einer den Greifer tragenden Greiferstange in Eingriff. In Abhängigkeit von der Schwenkbewegung des Zahnsektorstückes 17 - siehe Doppelpfeil 43 - führt das Schußfadeneintragorgan 8 eine alternierende Vorund Rückwärtsbewegung gemäß Doppelpfeil 44 aus.Fig. 4 shows a transmission 2a with a different structure from the aforementioned transmissions. The aforementioned partial transmissions 1 and 2 are omitted here. A tooth sector piece 17 has an arcuate recess 38, the upper circular arc 38 'of which has a toothing 39 directed into the recess 38. With this toothing, the pinion 40 is engaged, which is rotatably connected to the shaft 41 of the outer wheel 35. The shaft 41 of the outer wheel 35 lies in the vertical plane parallel to the bearing axis 18 of the toothed sector piece 17. The outer wheel 35 has an internal toothing 34, into which, in the manner of a planetary gear, are arranged axially parallel and above the geometric longitudinal axis 42 of the shaft 41 on the output shafts 6, 7 Engage pinion 36.37. The output shafts 6.7 form the output of the transmission. The free end of the respective output shaft 6.7 takes a pinion 4.5 rotatably. Both pinions 4, 5 are in engagement with the toothing of the weft insertion element 8, for example with a looper rod carrying the looper. Depending on the pivoting movement of the tooth sector piece 17 - see double arrow 43 - the weft thread insertion element 8 executes an alternating forward and backward movement according to double arrow 44.

Fig. 5 zeigt das Getriebe 2a in Schnittdarstellung gemäß der Linie I-I in Fig. 4.
Die Lagerachse 18 des Zahnsektorstückes 17 ist in den schematisch dargestellten Lagern 49,50 aufgenommen. Das Zahnsektorstück 17 weist, wie bereits in Fig. 4 dargestellt, eine kreisbogenförmig ausgebildete Ausnehmung 38 mit Innenverzahnung 39 auf, die mit dem Ritzel 40 kämmt. Das Ritzel 40 ist koaxial mit dem Außenrad 35 verbunden und drehfest auf der Welle 41 des Außenrades 35 angeordnet. Das Außenrad 35 und die Welle 41 bestehen hier aus einem Stück. Die Welle 41 ist ebenfalls in schematisch dargestellten Lagern 47,48 des Gehäuses oder in Teilen des Getriebegehäuses 33 aufgenommen. In die Innenverzahnung 34 greifen zwei achsparallel oberhalb der Querebene 42 der Welle 41 liegende in Art von Planetenrädern wirksame Ritzel 36,37 ein, deren in den Lagern 45,46 aufgenommenen Achse die Abtriebswellen 6,7 des Getriebes bilden. Am freien Ende der betreffenden Abtriebswellen 6,7 ist ein Ritzel 4,5 drehfest verbunden, das mit den Zähnen des Schußfadeneintragorgans 8 in Eingriff steht.FIG. 5 shows the gear 2a in a sectional view along the line II in FIG. 4.
The bearing axis 18 of the tooth sector piece 17 is accommodated in the bearings 49, 50 shown schematically. As already shown in FIG. 4, the tooth sector piece 17 has an arcuate recess 38 with internal teeth 39 which meshes with the pinion 40. The pinion 40 is coaxially connected to the outer wheel 35 and arranged in a rotationally fixed manner on the shaft 41 of the outer wheel 35. The outer wheel 35 and the shaft 41 consist of one piece here. The shaft 41 is also received in schematically illustrated bearings 47, 48 of the housing or in parts of the gear housing 33. Two internal pinions 36, 37, acting in the manner of planetary gears and axially parallel above the transverse plane 42 of the shaft 41, engage the output shafts 6, 7 of the gearbox in the bearings 45, 46. At the free end of the respective output shafts 6, 7, a pinion 4, 5 is connected in a rotationally fixed manner, which meshes with the teeth of the weft insertion element 8.

Mit der erfindungsgemäßen Lösung wird gegenüber dem Stand der Technik der Vorteil erreicht, daß die auf die jeweilige Greiferstange mit Greiferkopf zu übertragenden Kräfte zu deren alternierenden Bewegung auf zwei Antriebsritzel verteilt sind und somit eine wesentliche Verschleißreduzierung sowohl an Zahnstange wie auch an den Antriebsritzeln zu verzeichnen ist. Andererseits besteht nun auch die vorteilhafte Möglichkeit wahlweise mit einem oder zwei Antriebsritzeln zu arbeiten.With the solution according to the invention, the advantage over the prior art is achieved that the forces to be transmitted to the respective gripper bar with gripper head for their alternating movement are distributed over two drive pinions and thus a significant reduction in wear can be seen both on the rack and on the drive pinions . On the other hand, there is now also the advantageous option of working with one or two drive pinions.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

11
TeilgetriebePartial transmission
22nd
TeilgetriebePartial transmission
33rd
Webmaschinen-HauptwelleMain loom shaft
44th
Ritzelpinion
55
Ritzelpinion
66
AbtriebswelleOutput shaft
77
AbtriebswelleOutput shaft
88th
SchußfadeneintragorganWeft insertion member
99
KurvenscheibeCam
1010th
KurvenscheibeCam
1111
AbtastrolleScanning roll
1212th
AbtastrolleScanning roll
1313
WinkelhebelAngle lever
1414
Lagercamp
1515
HebelarmLever arm
1616
PleuelConnecting rod
1717th
ZahnsektorstückTooth sector piece
1818th
LagerachseBearing axis
1919th
Gelenkjoint
2020th
Lagercamp
2121
VerzahnungGearing
2222
Ritzelpinion
2323
InnenverzahnungInternal teeth
2424th
KegelradBevel gear
2525th
Achseaxis
2626
KegelradBevel gear
26a26a
AbtriebsachseOutput axis
2727
Lagercamp
2828
Lagercamp
2929
Zahnradgear
3030th
VerzahnungGearing
3131
Lagercamp
3232
Lagercamp
3333
Gehäusecasing
3434
InnenverzahnungInternal teeth
3535
AußenradOuter wheel
3636
Ritzelpinion
3737
Ritzelpinion
3838
AusnehmungRecess
38'38 '
oberer Kreisbogenupper arc
3939
VerzahnungGearing
4040
Ritzelpinion
4141
Wellewave
4242
goemetr. Längsachsegoemetr. Longitudinal axis
4343
DoppelpfeilDouble arrow
4444
DoppelpfeilDouble arrow
4545
Lagercamp
4646
Lagercamp
4747
Lagercamp
4848
Lagercamp
4949
Lagercamp
5050
Lagercamp

Claims (3)

  1. Mechanism for shuttleless looms, having weft thread introducing members (8), which can be pushed back and forth in an alternating manner into a shed, comprising a part mechanism (1) with continually rotating cams (9,10) and gear means (11,12,13,14,15,16,19), wherein the cams displace, by means of the gear means, a toothed sector part (17) with gear teeth (21) in a reciprocating pivoting movement, and comprising a part mechanism (2) with a pinion (22), in engagement with the gear teeth (21), and wherein the pinion (22) drives a first bevel wheel (24), which is in engagement with a second bevel wheel (26) and wherein the bevel wheel (26) is furthermore non-rotatably secured to a rotatably mounted driven spindle (26a) on which is non-rotatably mounted a gear wheel (29), characterised in that, in the part mechanism (2), there are furthermore mounted two output shafts (6,7) which are spaced from one another and parallel to the axis of the driven spindle (26a) and which have gear teeth (30) which are continuously in engagement with the gear wheel (29); and in that a pinion (4 or 5) is non-rotatably disposed on the free end of each output shaft (6,7), which pinion is in operating connection with gear teeth of the weft thread introducing members (8).
  2. Mechanism for shuttleless looms, having weft thread introducing members (8), which can be pushed back and forth into a shed, comprising a part mechanism (1) with continually rotating cams (9,10) and gear means (11,12,13,14,15,16,19), wherein the cams (9,10) displace, by means of the gear means, a toothed sector part (17) with gear teeth (21) in a reciprocating pivoting movement, and comprising a part mechanism (2) with a pinion (22), in engagement with the gear teeth (21), and wherein the pinion (22) drives a first bevel wheel (24), which is in engagement with a second bevel wheel (26) and wherein, furthermore, the bevel wheel (26) is non-rotatably secured to a rotatably mounted driven spindle (26a), characterised in that
    a) an outer wheel (35) with inner gear teeth (34) is non-rotatably secured on the driven spindle (26a);
    b) two output shafts (6,7) are disposed in the part mechanism (2), parallel to the axis of the driven spindle (26a), and the output shafts each support, on the drive side, a pinion (36 or 37), the pinions (36,37) being in engagement with the inner gear teeth (34) of the outer wheel (35); and
    c) a pinion (4 or 5) is non-rotatably secured on the free end of the output shaft (6,7), which pinion is in operating connection with gear teeth of the weft thread introducing members (8).
  3. Mechanism for shuttleless looms, having weft thread introducing members (8), which can be pushed back and forth into a shed, comprising continually rotating cams (9,10) and gear means (11,12,12,14,15,16,19), wherein the cams displace, by means of the gear means, a drive element (17), which is formed in a manner similar to a sector part, about a bearing spindle (18) in a reciprocating pivoting movement, characterised in that there is formed, in the drive element (17), a recess (38) which is delimited by at least one upper arc (38'), gear teeth (39) being provided in the arc (38'), with which gear teeth a pinion (40) is in engagement, the pinion being disposed coaxially on a shaft (41) mounted in the casing (33) and non-rotatably connected to the shaft (41); in that, furthermore, an outer wheel (35) with inner gear teeth (34) is disposed coaxially on the shaft (41) and non-rotatably connected to the shaft (41); and in that, outside a longitudinal axis (42) of the shaft (41), two output shafts (6,7) are disposed with their axes parallel to the axis of the shaft (41), the output shafts being, in each case, provided on the drive side with a pinion (36) or (37), in engagement with the inner gear teeth (34) of the outer wheel (35); and in that a pinion (4 or 5) is non-rotatably secured on the free end of the output shaft (6,7) and is in operating connection with gear teeth of the weft thread introducing members (8).
EP93104309A 1992-04-15 1993-03-17 Drive for shuttleless looms which have weft carrier grippers moving back and forth Expired - Lifetime EP0565885B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212536 1992-04-15
DE4212536A DE4212536C1 (en) 1992-04-15 1992-04-15

Publications (2)

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EP0565885A1 EP0565885A1 (en) 1993-10-20
EP0565885B1 true EP0565885B1 (en) 1996-11-13

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ID=6456833

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EP93104309A Expired - Lifetime EP0565885B1 (en) 1992-04-15 1993-03-17 Drive for shuttleless looms which have weft carrier grippers moving back and forth

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US (1) US5370010A (en)
EP (1) EP0565885B1 (en)
JP (1) JPH0610235A (en)
DE (2) DE4212536C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005162B (en) * 2014-06-10 2015-08-26 浙江泰坦股份有限公司 Loom drive mechanism
EP3037575B1 (en) * 2014-12-22 2018-04-25 ITEMA S.p.A. Insertion system of the weft threads in a weaving loom
CN104674438A (en) * 2015-03-03 2015-06-03 江苏友诚数控科技有限公司 Cam weft insertion mechanism of weaving machine
CN105442157B (en) * 2016-01-11 2017-08-04 天津工业大学 Weft insertion gearing mechanism for the three-dimensional loom of carbon fiber
EP4008818A1 (en) 2020-12-07 2022-06-08 Picanol Method and device for adjusting a gripper movement stroke
WO2022122271A1 (en) 2020-12-07 2022-06-16 Picanol Method and device for determining a movement parameter of a gripper
EP4008817A1 (en) 2020-12-07 2022-06-08 Picanol Method and device for determining a movement parameter of a gripper

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US998808A (en) * 1909-04-19 1911-07-25 Merrill O Steere Narrow-ware loom.
US1619389A (en) * 1925-02-14 1927-03-01 Frederick V Winters Vacuum-creating instrument
US2084645A (en) * 1936-05-22 1937-06-22 Edward A Kliewer Well pump
FR1228374A (en) * 1958-03-21 1960-08-29 Bendix Aviat Corp Reciprocating gear machine usable in particular as a pneumatic or hydraulic cylinder
CH411555A (en) * 1965-03-08 1966-04-15 Bobst Fils Sa J Machine working sheets
GB1404075A (en) * 1973-02-22 1975-08-28 Brintons Ltd Looms
US4147067A (en) * 1975-10-28 1979-04-03 Friedrich Kocks Gmbh & Company Linear drives
GB2073789B (en) * 1980-04-09 1984-08-08 Mackie & Sons Ltd J Tape drives
DE3731990C1 (en) * 1987-09-23 1989-01-05 Dornier Gmbh Lindauer Gear for shuttleless looms with weft-thread insertion members alternately pushable into the shed forwards and backwards
DE3826156A1 (en) * 1987-09-23 1989-04-20 Dornier Gmbh Lindauer GEARBOX FOR CONTINUOUS WEAVING MACHINES WITH ALTERNATING IN THE WEAVING COMPARTMENT WIDTHPUT ENTRY DEVICES

Also Published As

Publication number Publication date
US5370010A (en) 1994-12-06
EP0565885A1 (en) 1993-10-20
DE59304450D1 (en) 1996-12-19
DE4212536C1 (en) 1993-04-15
JPH0610235A (en) 1994-01-18

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