EP0699786B1 - Shedding device - Google Patents

Shedding device Download PDF

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Publication number
EP0699786B1
EP0699786B1 EP95113778A EP95113778A EP0699786B1 EP 0699786 B1 EP0699786 B1 EP 0699786B1 EP 95113778 A EP95113778 A EP 95113778A EP 95113778 A EP95113778 A EP 95113778A EP 0699786 B1 EP0699786 B1 EP 0699786B1
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EP
European Patent Office
Prior art keywords
knives
pair
profile
shed
knife
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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
EP95113778A
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German (de)
French (fr)
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EP0699786A3 (en
EP0699786A2 (en
Inventor
Martin Burkert
Siegmund Tremer
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Staeubli GmbH
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Staeubli GmbH
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Publication date
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Publication of EP0699786A2 publication Critical patent/EP0699786A2/en
Publication of EP0699786A3 publication Critical patent/EP0699786A3/en
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Publication of EP0699786B1 publication Critical patent/EP0699786B1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/10—Centre-shed dobbies, i.e. shed formed by lifting some threads and lowering the others from central shed-closed position

Definitions

  • the invention relates to a shed device for actuation of stems in a dobby with a pair of mutually opposite and mutually movable knives and with a variety of shafts standing swivel levers, the first of which faces the knives End is provided with a first connecting device with which can be optionally connected to one of the knives are, and with first profile devices that are rotatable about axes are essentially in the direction of movement of the knives, the profile devices each at least one um its axis of rotation revolving in a closed line and in axially wandering profile, and each Knife with at least one profile is engaged.
  • Such a shedding device is from the European one Patent application EP-A-0 566 506 known.
  • This shedding device works as a closed compartment dobby at after a specialist training cycle all stems including those who take the same position in the next cycle should return to the middle position.
  • In the middle position can be provided at one end of the pivot lever Double hooks in one of the two in this position close adjacent knives can be latched.
  • the swivel levers are hinged at their other end to a common axis.
  • the shafts which are articulated on the pivot levers to form a Upper or lower compartment deflected when the knives move will.
  • this task is accomplished in a first solution solved a shedding device of the type mentioned, which is characterized in that the pivot lever on her second end with a second connecting device with which you can choose with a knife from a second Pairs of opposite and movable against each other Knives are connectable, and that second profile devices are provided, the knives of the second pair each with at least one profile of the second profile devices in Stand by.
  • a shedding device of the type mentioned solved which is characterized in that the pivot lever its second end with a second connection device are provided with which you can choose with a knife second pair of opposite and against each other Movable knives are connectable, the knives of the second Pairs each with at least one profile of the first profile devices are engaged.
  • the subject training devices according to the invention enable an enterprise both as open subject, closed subject or Partially closed compartment dobby.
  • the knives are operated synchronously ensured in a simple manner.
  • two corresponding engagement parts can be obtained on corresponding knives of the first and second Knife pairs so far offset from each other with one on the profile devices trained profile are engaged that a 180 ° phase-shifted movement of these knives in the respective Knife pairs are done.
  • FIG. 1 is an embodiment of an inventive Shed forming device shown in which two pairs of knives 11A, 11B and 11C, 11D each movable relative to each other via driven profile devices in the form of cam cylinders 16 are movable.
  • the main axes of the cam cylinders 16 are arranged perpendicular to the length of the knife.
  • the knife-extending engagement pins 23 are provided which are preferably attached cam rollers 12, which in profiles in the form of grooves 24 in the lateral surface of the cam cylinder intervention.
  • the grooves in the peripheral surface of the cam cylinder each run along in the direction of the axis of rotation the curve cylinder wandering, closed lines, which are designed according to the desired knife movement.
  • a large slope of the lines leads to rapid movement the knife while a slight slope of the lines a slow movement of the knives.
  • these can Lines should therefore be designed so that they have no slope have to achieve an extended knife standstill to obtain a large standstill angle.
  • the grooves in everyone each assigned to one of the knife ends of a knife Curve cylinders have the same shape.
  • the on each a groove provided for the two cylinders Knife ends of an associated pair of knives are preferred complementary to each other.
  • cam cylinders To change the direction of rotation of the cam rollers using the groove cam principle to avoid, it would also be possible on the cam cylinders to form a suitable above profile that in a correspondingly adapted device at the ends of the Knives, for example in the form of two mutually employed Cam rollers engages. It would also be possible to use the cam cylinders with grooves that are wider than the diameter of the cam rollers used, and at each knife end to attach two cam rollers offset to each other, each only run on one side of the groove.
  • the knives are in each case near their ends extending essentially in the longitudinal direction of the cam cylinders Guides 20 slidably supported.
  • the cam cylinders 16 are each mounted on rotatably mounted shafts 17.
  • a belt transmission can be provided, for example, on both shafts 17 a sprocket or pulley 19 of the same size is provided which is via a chain or a toothed belt 18th communicate with each other.
  • the drive of the second cam cylinder 16 can also be a gear or a Push rod mechanism with eccentric at the end of the cam cylinder attached spigot.
  • each pair of knives exactly one pair of cam cylinders provided that the Front ends of the knives are arranged opposite one another.
  • double hooks would also be other means for an optional connection of the pivot lever ends with one of the knives of an assigned pair of knives conceivable, such as provided on the knives, optionally controllable and engageable with the pivot lever end Hooks, pneumatic connectors, electrically operated Electromagnetic devices etc.
  • FIG. 2 is an alternative embodiment of an inventive Shed forming device shown in both Knife pairs 111A, 111B and 111C, 111D by means of two pairs of knives common pair of cam cylinders 116 driven will.
  • the cam cylinders 116 are 117 with their axes of rotation along the direction of movement of the knives essentially in one imaginary level arranged between those by each Knife pairs 111A, 111B and 111C, 111D formed imaginary Levels.
  • There are engagement pins at the ends of the pairs of knives provided on which again preferably curves 112 attached are, each with profiles 124 on the cam cylinders 116 are engaged.
  • Profiles 124 traveling along axis 117 are the knives of the respective knife pairs 111A, 111B and 111C, 111D when rotating the cam cylinder in their mutual position parallel to each other slidable.
  • the profiles on the cam cylinders 116 are designed so that the two pairs of knives, their respective Engagement pins with cam rollers 112 on opposite one another Areas of the outer surface of the rollers with the Profiles 124 are engaged, substantially in phase opposition are shifted towards one another to operate as an open shed dobby to enable, as explained in more detail later will be.
  • the swivel levers 114 become again and 115 actuated, at both ends connecting devices are provided in the form of double hooks 113.
  • the swivel levers 114 and 115 each optionally engaged with one of the knives of a pair of knives be, the change of intervention in a closed position the knife as shown by the knives 111C, 111D in FIG. 2 is possible.
  • rods 121 and 122 are substantially in the middle, respectively the swivel lever is articulated to operate the shafts to serve.
  • the knives are as in the embodiment according to FIG. 1 in each case held in guides in which they are essentially in The longitudinal direction of the axes 117 are displaceable (the guides are not shown in FIG. 2).
  • the cam cylinders are over a drive (not shown), for example by means of a Belt transmission, a gear transmission or one Eccentric gear can be driven synchronously with each other.
  • the profiles 124 can be in the form of grooves in the roll surface be formed, but can also be in the form of surveys exist which are in appropriately adapted devices, e.g. in the form of counter profiles, engage at the ends of the knives.
  • FIG. 3 is a schematic path-time diagram for the Tray movement and the knife distance that shown in FIGS. 1 and 2 Shed training devices according to the invention shown.
  • the specialist movement which is shown in FIG. 3 as ordinate is, and an upper, a middle and a lower Position as an excellent position, is about the Obtain rods 21 and 22 on the pivot levers 14 and 15 are articulated.
  • 3 is the movement of the knives shown in the form of the mutual knife distance, where for example curve 35 the distance between the knives 11C and 11D and curve 36 the distance between the knives 11A and 11B.
  • FIG. 3 shows a full cycle for the knife movement, the one turn of the cam cylinder of 360 ° for corresponds to the groove shape shown in FIG. 1.
  • the compartment is open, with either the stems stand in the lower or upper position.
  • weft 1 weft thread
  • the distance is at this position of the pair of knives 11C, 11D represented by curve 35 becomes small, so that in this position an intervention selection the double hook for engagement with either the knife 11C or the knife 11D is feasible.
  • the distance between the knives 11A and 11B shown in curve 36 is in this initial Position large, so that an engagement selection for the double hook not possible at the other end of the swivel levers 14 and 15 is.
  • the upper double hook of the pivot lever 14 with the Knife 11A is engaged and the lower double hook of the Swiveling lever 14 engages with the knife 11D an outward movement of the knife 11D and the knife 11A inwards that the pivot lever 14 in the direction of movement of the Knife is moved in parallel, so that a shift of the shaft controlled by the articulated rod 21 e.g. of the lower to the upper position.
  • the upper double hook of the pivot lever 14 with the knife 11A in Is engaged and the lower double hook with the knife 11C in If there is engagement, the knife 11C moves afterwards outside and the knife 11A inward that the pivot lever 14 again pivoted about the point at which the rod 21 is articulated without this point changing its position.
  • FIG. 4 the workflow is in one Closed compartment dobby shown how it works with the device would be achievable according to the present invention if the Movement of the two pairs of knives 11A, 11B and 11C, 11D with modifying Phasing expires.
  • the curve 39 shows for this Fall the distance of the knives 11C, 11D
  • curve 40 shows that Distance of the knives 11A, 11B.
  • the open one Pair of knives 11A, 11B moved to the closed position, whereby each shaft goes into the closed compartment position.
  • the closed pair of blades 11C, 11D is moved apart according to curve 39. Move depending on the control of the double hook the stems in the high or low position.
  • FIG. 5 shows the mode of operation of the shed forming device according to the invention when operated as a partially closed shed dobby.
  • the upper curves 41 to 44 denote the tray movement, while the lower curves 45 and 46 each represent the distance between the knives 11A, 11B and 11C, 11D.
  • the distance between the knives 11A, 11B according to curve 45 is large, while the distance between the knives 11C, 11D is small.
  • the distance between the knives 11A, 11B is reduced according to curve 45. As a result, all shafts begin to move towards a middle position.
  • the stems have reached a middle position at time t 3 .
  • the movement of the knives 11A, 11B according to curve 45 has ended, while the movement of the knives 11C, 11D still continues until the time t 5 .
  • the compartment is fully opened again at a slower speed of the shed movement, which compartment remains open until the time t 6 for the insertion of the second weft thread.
  • this process is repeated in the opposite direction as shown in FIG. 5.
  • the operation as a partially closed shed dobby thus represents a hybrid between the open shed and the closed shed dobby.

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Description

Die Erfindung betrifft eine Fachbildungsvorrichtung zur Betätigung von Schäften in einer Schaftmaschine mit einem Paar von einander gegenüberliegenden und gegeneinander bewegbaren Messern und mit einer Vielzahl von mit den Schäften in Verbindung stehenden Schwenkhebeln, deren den Messern zugewandtes erstes Ende mit einer ersten Verbindungsvorrichtung versehen ist, mit der die Schwenkhebel wahlweise mit einem der Messer verbindbar sind, und mit ersten Profileinrichtungen, die um Achsen drehbar sind, die im wesentlichen in Bewegungsrichtung der Messer verlaufen, wobei die Profileinrichtungen jeweils wenigstens ein um ihre Drehachse in einer geschlossenen Linie umlaufendes und in axialer Richtung wanderndes Profil aufweisen, und wobei jedes Messer mit wenigstens einem Profil in Eingriff steht.The invention relates to a shed device for actuation of stems in a dobby with a pair of mutually opposite and mutually movable knives and with a variety of shafts standing swivel levers, the first of which faces the knives End is provided with a first connecting device with which can be optionally connected to one of the knives are, and with first profile devices that are rotatable about axes are essentially in the direction of movement of the knives, the profile devices each at least one um its axis of rotation revolving in a closed line and in axially wandering profile, and each Knife with at least one profile is engaged.

Eine derartige Fachbildungsvorrichtung ist aus der europäischen Patentanmeldung EP-A-0 566 506 bekannt. Diese Fachbildungsvorrichtung arbeitet als Geschlossenfach-Schaftmaschine, bei der nach einem Fachbildungszyklus sämtliche Schäfte einschließlich derjenigen, die im nächsten Zyklus die gleiche Position einnehmen sollen, in die Mittelstellung zurückkehren. In der Mittelstellung können an einem Ende der Schwenkhebel vorgesehene Doppelhaken jeweils in eines der beiden in dieser Stellung nahe nebeneinanderliegenden Messer eingeklinkt werden. Die Schwenkhebel sind an ihrem anderen Ende an einer gemeinsamen Achse angelenkt. In Abhängigkeit davon, in welches der beiden Messer der Doppelhaken eingeklinkt wurde, können somit die Schäfte, die an den Schwenkhebeln angelenkt sind, zur Bildung eines Ober- oder eines Unterfachs bei Bewegung der Messer ausgelenkt werden.Such a shedding device is from the European one Patent application EP-A-0 566 506 known. This shedding device works as a closed compartment dobby at after a specialist training cycle all stems including those who take the same position in the next cycle should return to the middle position. In the middle position can be provided at one end of the pivot lever Double hooks in one of the two in this position close adjacent knives can be latched. The swivel levers are hinged at their other end to a common axis. Depending on which of the two knives the double hook has been latched in, the shafts, which are articulated on the pivot levers to form a Upper or lower compartment deflected when the knives move will.

Es ist die Aufgabe der vorliegenden Erfindung, die bekannte Fachbildungsvorrichtung zu verbessern, um einen vielseitigeren Betrieb zu ermöglichen.It is the object of the present invention, the known one Shed forming device to improve a more versatile To enable operation.

Erfindungsgemäß wird diese Aufgabe in einer ersten Lösung durch eine Fachbildungsvorrichtung der eingangs genannten Art gelöst, die sich dadurch auszeichnet, daß die Schwenkhebel an ihrem zweiten Ende mit einer zweiten Verbindungsvorrichtung versehen sind, mit der sie wahlweise mit einem Messer eines zweiten Paars von einander gegenüberliegenden und gegeneinander bewegbaren Messern verbindbar sind, und daß zweite Profileinrichtungen vorgesehen sind, wobei die Messer des zweiten Paars jeweils mit wenigstens einem Profil der zweiten Profileinrichtungen in Eingriff stehen.According to the invention, this task is accomplished in a first solution solved a shedding device of the type mentioned, which is characterized in that the pivot lever on her second end with a second connecting device with which you can choose with a knife from a second Pairs of opposite and movable against each other Knives are connectable, and that second profile devices are provided, the knives of the second pair each with at least one profile of the second profile devices in Stand by.

In einer zweiten erfindungsgemäßen Lösung wird die Aufgabe durch eine Fachbildungsvorrichtung der eingangs genannten Art gelöst, die sich dadurch auszeichnet, daß die Schwenkhebel an ihrem zweiten Ende mit einer zweiten Verbindungsvorrichtung versehen sind, mit der sie wahlweise mit einem Messer eines zweiten Paars von einander gegenüberliegenden und gegeneinander bewegbaren Messern verbindbar sind, wobei die Messer des zweiten Paars jeweils mit wenigstens einem Profil der ersten Profileinrichtungen in Eingriff stehen.In a second solution according to the invention, the task by a shedding device of the type mentioned solved, which is characterized in that the pivot lever its second end with a second connection device are provided with which you can choose with a knife second pair of opposite and against each other Movable knives are connectable, the knives of the second Pairs each with at least one profile of the first profile devices are engaged.

Die erfindungsgemäßen Fachbildungsvorrichtungen ermöglichen einen Betrieb sowohl als Offenfach-, Geschlossenfach- oder Teilgeschlossenfach-Schaftmaschine.The subject training devices according to the invention enable an enterprise both as open subject, closed subject or Partially closed compartment dobby.

Gemäß der zweiten Lösung wird ein synchroner Betrieb der Messer auf einfache Weise sichergestellt. Um z.B. einen gegenphasigen Betrieb der Messer zu erhalten, können zwei entsprechende Eingriffsteile an entsprechenden Messern des ersten und zweiten Messerpaars soweit zueinander versetzt mit einem an der Profileinrichtungen ausgebildeten Profil in Eingriff stehen, daß eine um 180° phasenverschobene Bewegung dieser Messer in den jeweiligen Messerpaaren erfolgt. According to the second solution, the knives are operated synchronously ensured in a simple manner. To e.g. an antiphase To get operation of the knives, two corresponding engagement parts can be obtained on corresponding knives of the first and second Knife pairs so far offset from each other with one on the profile devices trained profile are engaged that a 180 ° phase-shifted movement of these knives in the respective Knife pairs are done.

Weitere vorteilhafte Ausführungsformen gehen aus den Unteransprüchen hervor.Further advantageous embodiments emerge from the subclaims forth.

Die Erfindung soll nun anhand von zeichnerisch dargestellten Ausführungsbeispielen näher erläutert und beschrieben werden. In den Zeichnungen zeigen:

Fig.1
eine beispielhafte Ausführungsform der erfindungsgemäßen Fachbildungsvorrichtung;
Fig.2
eine weitere Ausführungsform einer erfindungsgemäßen Fachbildungsvorrichtung;
Fig.3
ein schematisches Weg-Zeit-Diagramm für den Betrieb der erfindungsgemäßen Fachbildungsvorrichtung als Offenfach-Schaftmaschine;
Fig.4
ein schematisches Weg-Zeit-Diagramm für den Betrieb der erfindungsgemäßen Fachbildungsvorrichtung als Geschlossenfach-Schaftmaschine; und ..
Fig.5
ein schematisches Weg-Zeit-Diagramm für den Betrieb der erfindungsgemäßen Fachbildungsvorrichtung als Teilgeschlossenfach-Schaftmaschine.
The invention will now be explained and described in more detail with reference to exemplary embodiments shown in the drawings. The drawings show:
Fig. 1
an exemplary embodiment of the shed formation device according to the invention;
Fig. 2
a further embodiment of a shed formation device according to the invention;
Fig. 3
a schematic path-time diagram for the operation of the shed forming device according to the invention as an open shed dobby;
Fig. 4
a schematic path-time diagram for the operation of the shedding device according to the invention as a closed shed dobby; and ..
Fig. 5
a schematic path-time diagram for the operation of the shed forming device according to the invention as a partially closed shed dobby.

In der Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Fachbildungsvorrichtung gezeigt, bei der zwei Paare von jeweils gegeneinander bewegbaren Messern 11A, 11B und 11C, 11D über angetriebene Profilvorrichtungen in Form von Kurvenzylindern 16 bewegbar sind. Die Hauptachsen der Kurvenzylinder 16 sind senkrecht zur Längserstreckung der Messer angeordnet. An den Enden der jeweiligen Messer 11A bis 11D sind über die Stirnflächen der Messer hervorstehende und sich in Längsrichtung der Messer erstreckende Eingriffsstifte 23 vorgesehen, an denen vorzugsweise Kurvenrollen 12 angebracht sind, die in Profile in Form von Nuten 24 in der Mantelfläche der Kurvenzylinder eingreifen. Die Nuten in der Umfangsfläche der Kurvenzylinder verlaufen jeweils entlang von in der Richtung der Drehachse der Kurvenzylinder wandernden, in sich geschlossenen Linien, die je nach der gewünschten Messerbewegung ausgebildet sind. Eine große Steigung der Linien führt zu einer schnellen Bewegung der Messer, während eine geringe Steigung der Linien eine langsame Bewegung der Messer zur Folge hat. In den Bereichen mit maximaler und minimaler Messerauslenkung, können diese Linien daher derart ausgebildet sein, daß sie keine Steigung aufweisen, um einen verlängerten Messerstillstand zur Erzielung großer Fachstillstandswinkel zu erhalten. Die Nuten in jedem der jeweils einem der Messerenden eines Messers zugeordneten Kurvenzylinder weisen jeweils die gleiche Form auf. Die auf jeweils einem Kurvenzylinder vorgesehenen Nuten für die beiden Messerenden eines zugeordneten Messerpaares sind vorzugsweise zueinander komplementär.1 is an embodiment of an inventive Shed forming device shown in which two pairs of knives 11A, 11B and 11C, 11D each movable relative to each other via driven profile devices in the form of cam cylinders 16 are movable. The main axes of the cam cylinders 16 are arranged perpendicular to the length of the knife. On the ends of the respective knives 11A to 11D are over the End faces of the knife protruding and extending lengthways the knife-extending engagement pins 23 are provided which are preferably attached cam rollers 12, which in profiles in the form of grooves 24 in the lateral surface of the cam cylinder intervention. The grooves in the peripheral surface of the cam cylinder each run along in the direction of the axis of rotation the curve cylinder wandering, closed lines, which are designed according to the desired knife movement. A large slope of the lines leads to rapid movement the knife while a slight slope of the lines a slow movement of the knives. In the fields of with maximum and minimum knife deflection, these can Lines should therefore be designed so that they have no slope have to achieve an extended knife standstill to obtain a large standstill angle. The grooves in everyone each assigned to one of the knife ends of a knife Curve cylinders have the same shape. The on each a groove provided for the two cylinders Knife ends of an associated pair of knives are preferred complementary to each other.

Um die Drehrichtungswechsel der Kurvenrollen beim Nutkurvenprinzip zu vermeiden, wäre es auch möglich, auf den Kurvenzylindern ein geeignetes vorstehendes Profil auszubilden, das in eine entsprechend angepaßte Vorrichtung an den Enden der Messer, beispielsweise in Form zweier zueinander angestellter Kurvenrollen eingreift. Ebenso wäre es möglich, die Kurvenzylinder mit Nuten zu versehen, die breiter als der Durchmesser der eingesetzten Kurvenrollen sind, und an jedem Messerende zwei zueinander versetzte Kurvenrollen anzubringen, die jeweils nur an einer Seitenfläche der Nut anlaufen.To change the direction of rotation of the cam rollers using the groove cam principle to avoid, it would also be possible on the cam cylinders to form a suitable above profile that in a correspondingly adapted device at the ends of the Knives, for example in the form of two mutually employed Cam rollers engages. It would also be possible to use the cam cylinders with grooves that are wider than the diameter of the cam rollers used, and at each knife end to attach two cam rollers offset to each other, each only run on one side of the groove.

Die Messer sind in der Nähe ihrer Enden jeweils in sich im wesentlichen in Längsrichtung der Kurvenzylinder erstreckenden Führungen 20 verschiebbar gehaltert. Die Kurvenzylinder 16 sind jeweils auf drehbar gelagerten Wellen 17 angebracht. Beispielsweise kann eine der Wellen 17 mit einer Antriebswelle 17' in Verbindung stehen, wobei zum synchronen Antrieb des zweiten Kurvenzylinders 16 beispielsweise ein Umgschlingungsgetriebe vorgesehen sein kann, bei dem an beiden Wellen 17 beispielsweise ein Kettenrad oder eine Riemenscheibe 19 gleichen Umfangs vorgesehen ist, die über eine Kette oder einen Zahnriemen 18 miteinander in Verbindung stehen. Der Antrieb des zweiten Kurvenzylinders 16 kann auch über ein Zahnradgetriebe oder einen Schubstangenmechanismus mit exzentrisch am Ende der Kurvenzylinder angebrachten Zapfen erfolgen.The knives are in each case near their ends extending essentially in the longitudinal direction of the cam cylinders Guides 20 slidably supported. The cam cylinders 16 are each mounted on rotatably mounted shafts 17. For example can one of the shafts 17 with a drive shaft 17 'in Are connected, with the synchronous drive of the second Curve cylinder 16, for example, a belt transmission can be provided, for example, on both shafts 17 a sprocket or pulley 19 of the same size is provided which is via a chain or a toothed belt 18th communicate with each other. The drive of the second cam cylinder 16 can also be a gear or a Push rod mechanism with eccentric at the end of the cam cylinder attached spigot.

In der Ausführungsform gemäß der Fig. 1 ist für jedes Messerpaar genau ein Paar von Kurvenzylindern vorgesehen, die den Stirnenden der Messer gegenüberliegend angeordnet sind.In the embodiment according to FIG. 1 is for each pair of knives exactly one pair of cam cylinders provided that the Front ends of the knives are arranged opposite one another.

Zwischen den beiden Messerpaaren 11A, 11B und 11C, 11D erstrecken sich Schwenkhebel 14 und 15, an denen im wesentlichen in der Mitte Stangen 21 und 22 zur Betätigung der Schäfte angelenkt sind. Die Schwenkhebel weisen an beiden Enden jeweils Verbindungsvorrichtungen zum wahlweisen Verbinden mit einem der Messer eines zugeordneten Messerpaares auf, beispielsweise in Form von angelenkten Doppelhaken 13, die wahlweise über eines der dem entsprechenden Ende des Schwenkhebels zugeordneten Messer bei einer geschlossenen Position der Messer, wie in der Fig. 1 durch die Messer 11C und 11D gezeigt, schwenkbar und somit in Eingriff bringbar sind. Zum wahlweisen Einklinken der Doppelhaken in eines der Messer sind (in der Fig. 1 nicht gezeigte) im Stand der Technik bekannte Auslöse- bzw. Steuereinrichtungen vorgesehen. Anstelle von Doppelhaken wären auch andere Mittel für eine wahlweise Verbindung der Schwenkhebelenden mit einem der Messer eines zugeordneten Messerpaares denkbar, wie z.B. an den Messern vorgesehene, wahlweise ansteuerbare und mit dem Schwenkhebelende in Eingriff bringbare Haken, pneumatische Verbindungsvorrichtungen, elektrisch betätigbare Elektromagnetvorrichtungen etc. Extend between the two pairs of knives 11A, 11B and 11C, 11D themselves pivot levers 14 and 15, on which essentially rods 21 and 22 are articulated in the middle to actuate the shafts are. The swivel levers have at both ends Connection devices for optional connection to one of the Knives of an associated pair of knives, for example in Form of articulated double hooks 13, which optionally over one the associated with the corresponding end of the pivot lever Knives with the knives in a closed position, as in the Fig. 1 shown by the knife 11C and 11D, pivotable and can thus be brought into engagement. For optional latching of the Are double hooks in one of the knives (not shown in FIG. 1) tripping or control devices known in the prior art intended. Instead of double hooks would also be other means for an optional connection of the pivot lever ends with one of the knives of an assigned pair of knives conceivable, such as provided on the knives, optionally controllable and engageable with the pivot lever end Hooks, pneumatic connectors, electrically operated Electromagnetic devices etc.

In der Fig. 2 ist eine alternative Ausführungsform einer erfindungsgemäßen Fachbildungsvorrichtung gezeigt, bei der beide Messerpaare 111A, 111B und 111C, 111D mittels einem beiden Messerpaaren gemeinsamen Paar von Kurvenzylindern 116 angetrieben werden. Die Kurvenzylinder 116 sind mit ihren Drehachsen 117 längs der Bewegungsrichtung der Messer im wesentlichen in einer gedachten Ebene angeordnet, die zwischen den durch die jeweiligen Messerpaare 111A, 111B und 111C, 111D gebildeten gedachten Ebenen liegt. An den Enden der Messerpaare sind Eingriffsstifte vorgesehen, an denen wieder vorzugsweise Kurvenvollen 112 angebracht sind, die jeweils mit Profilen 124 an den Kurvenzylindern 116 in Eingriff stehen. Durch den Eingriff in die in Richtung der Achse 117 wandernden Profile 124 sind die Messer der jeweiligen Messerpaare 111A, 111B und 111C, 111D bei Drehung der Kurvenzylinder in ihrer gegenseitigen Lage parallel zueinander verschiebbar. Die Profile an den Kurvenzylindern 116 sind dabei so ausgebildet, daß die beiden Messerpaare, deren jeweilige Eingriffsstifte mit Kurvenrollen 112 an einander gegenüberliegenden Bereichen der Mantelfläche der Walzen mit den Profilen 124 in Eingriff stehen, im wesentlichen gegenphasig zueinander verschoben werden, um einen Betrieb als Offenfach-Schaftmaschine zu ermöglichen, wie später noch genauer erläutert werden wird.2 is an alternative embodiment of an inventive Shed forming device shown in both Knife pairs 111A, 111B and 111C, 111D by means of two pairs of knives common pair of cam cylinders 116 driven will. The cam cylinders 116 are 117 with their axes of rotation along the direction of movement of the knives essentially in one imaginary level arranged between those by each Knife pairs 111A, 111B and 111C, 111D formed imaginary Levels. There are engagement pins at the ends of the pairs of knives provided on which again preferably curves 112 attached are, each with profiles 124 on the cam cylinders 116 are engaged. By engaging in the direction Profiles 124 traveling along axis 117 are the knives of the respective knife pairs 111A, 111B and 111C, 111D when rotating the cam cylinder in their mutual position parallel to each other slidable. The profiles on the cam cylinders 116 are designed so that the two pairs of knives, their respective Engagement pins with cam rollers 112 on opposite one another Areas of the outer surface of the rollers with the Profiles 124 are engaged, substantially in phase opposition are shifted towards one another to operate as an open shed dobby to enable, as explained in more detail later will be.

Durch Bewegung der Messer werden wieder die Schwenkhebel 114 und 115 betätigt, an deren beiden Enden Verbindungsvorrichtungen in Form von Doppelhaken 113 vorgesehen sind. Wie bei der zuvor gezeigten Ausführungsform nach der Fig. 1 können über die Doppelhaken 113 die Schwenkhebel 114 und 115 jeweils wahlweise mit einem der Messer eines Messerpaars in Eingriff gebracht werden, wobei der Eingriffswechsel in einer geschlossenen Stellung der Messer, wie er durch die Messer 111C, 111D in der Fig. 2 gezeigt ist, möglich ist. An den Schwenkhebeln 114 und 115 sind jeweils Stangen 121 und 122 im wesentlichen in der Mitte der Schwenkhebel angelenkt, die zur Betätigung der Schäfte dienen.By moving the knives, the swivel levers 114 become again and 115 actuated, at both ends connecting devices are provided in the form of double hooks 113. As with the previously shown embodiment according to FIG. 1 can on the Double hook 113 the swivel levers 114 and 115 each optionally engaged with one of the knives of a pair of knives be, the change of intervention in a closed position the knife as shown by the knives 111C, 111D in FIG. 2 is possible. On the swivel levers 114 and 115 rods 121 and 122 are substantially in the middle, respectively the swivel lever is articulated to operate the shafts to serve.

Die Messer sind wie bei der Ausführungsform nach der Fig. 1 jeweils in Führungen gehaltert, in denen sie im wesentlichen in Längsrichtung der Achsen 117 verschiebbar sind (die Führungen sind in der Fig. 2 nicht gezeigt). Die Kurvenzylinder sind über einen Antrieb (nicht gezeigt) beispielsweise mittels eines Umschlingungsgetriebes, eines Zahnradgetriebes oder eines Exzentergetriebes synchron zueinander antreibbar.The knives are as in the embodiment according to FIG. 1 in each case held in guides in which they are essentially in The longitudinal direction of the axes 117 are displaceable (the guides are not shown in FIG. 2). The cam cylinders are over a drive (not shown), for example by means of a Belt transmission, a gear transmission or one Eccentric gear can be driven synchronously with each other.

Die Profile 124 können in der Form von Nuten in der Walzenoberfläche ausgebildet sein, können aber auch in Form von Erhebungen bestehen, die in entsprechend angepaßte Vorrichtungen, z.B. in Form von Gegenprofilen, an den Enden der Messer eingreifen.The profiles 124 can be in the form of grooves in the roll surface be formed, but can also be in the form of surveys exist which are in appropriately adapted devices, e.g. in the form of counter profiles, engage at the ends of the knives.

Die Wirkungsweise der vorliegenden Erfindung im Rahmen einer Offenfach-Schaftmaschine, einer Geschlossenfach-Schaftmaschine und einer Teilgeschlossenfach-Schaftmaschine wird nun in bezug auf die schematisch dargestellten Fachbewegungen und Messerabstände gemäß den Figuren 3, 4 und 5 erläutert, die jeweils nur beispielhaft einen von vielen möglichen Betriebsabläufen zeigen.The operation of the present invention in the context of a Open compartment dobby, a closed compartment dobby and a partially closed shed dobby is now referenced on the schematically represented specialist movements and knife distances explained according to Figures 3, 4 and 5, each only an example of one of many possible operational processes demonstrate.

In der Fig. 3 ist ein schematisches Weg-Zeit-Diagramm für die Fachbewegung und den Messerabstand der in den Fig. 1 und 2 gezeigten erfindungsgemäßen Fachbildungsvorrichtungen dargestellt. Die Fachbewegung, die in der Fig. 3 als Ordinate dargestellt ist, und die eine obere, eine mittlere und eine untere Stellung als ausgezeichnete Position aufweist, wird über die Stangen 21 und 22 erhalten, die an den Schwenkhebeln 14 und 15 angelenkt sind. Weiter ist in der Fig. 3 die Bewegung der Messer in Form des gegenseitigen Messerabstands dargestellt, wobei beispielsweise die Kurve 35 den Abstand zwischen den Messern 11C und 11D und die Kurve 36 den Abstand zwischen den Messern 11A und 11B darstellt. 3 is a schematic path-time diagram for the Tray movement and the knife distance that shown in FIGS. 1 and 2 Shed training devices according to the invention shown. The specialist movement, which is shown in FIG. 3 as ordinate is, and an upper, a middle and a lower Position as an excellent position, is about the Obtain rods 21 and 22 on the pivot levers 14 and 15 are articulated. 3 is the movement of the knives shown in the form of the mutual knife distance, where for example curve 35 the distance between the knives 11C and 11D and curve 36 the distance between the knives 11A and 11B.

In der Fig. 3 ist ein voller Zyklus für die Messerbewegung gezeichnet, der einer Umdrehung der Kurvenzylinder von 360° für die in der Fig. 1 gezeigte Nutform entspricht. Zu Beginn des gezeigten Zyklus ist das Fach geöffnet, wobei die Schäfte entweder in der unteren oder oberen Stellung stehen. In dieser Position, die der in der Fig. 1 gezeigten Stellung der Messer entspricht, kann der Schußfaden (Schuß 1) durch das Fach eingetragen werden. Gleichzeitig ist bei dieser Position der Abstand des Messerpaares 11C, 11D, der durch die Kurve 35 dargestellt wird, klein, so daß in dieser Position eine Eingriffsauswahl des Doppelhakens zum Eingriff entweder mit dem Messer 11C oder dem Messer 11D durchführbar ist. Der Abstand der Messer 11A und 11B, der in der Kurve 36 gezeigt ist, ist in dieser anfänglichen Position groß, so daß eine Eingriffsauswahl für den Doppelhaken am anderen Ende der Schwenkhebel 14 und 15 nicht möglich ist.3 shows a full cycle for the knife movement, the one turn of the cam cylinder of 360 ° for corresponds to the groove shape shown in FIG. 1. At the beginning of cycle shown, the compartment is open, with either the stems stand in the lower or upper position. In this Position that the position of the knife shown in Fig. 1 corresponds to the weft thread (weft 1) entered by the subject will. At the same time, the distance is at this position of the pair of knives 11C, 11D represented by curve 35 becomes small, so that in this position an intervention selection the double hook for engagement with either the knife 11C or the knife 11D is feasible. The distance between the knives 11A and 11B shown in curve 36 is in this initial Position large, so that an engagement selection for the double hook not possible at the other end of the swivel levers 14 and 15 is.

Im weiteren Zeitverlauf bewegen sich die Messer in den beiden Messerpaaren 11A, 11B und 11C, 11D gegenphasig zueinander, d.h. gemäß der Kurve 35 entfernen sich die Messer 11C und 11D voneinander, während gemäß der Kurve 36 die Messer 11A und 11D ihren gegenseitigen Abstand verringern. Je nachdem, in welchem der Messer die Doppelhaken an den jeweiligen Enden der Schwenkhebel eingehakt sind, wird der entsprechend angesteuerte Schaft in seiner oberen oder unteren Position gemäß den Kurven 31 und 34 beibehalten oder in die entsprechend gegenüberliegende untere bzw. obere Position gemäß den Kurven 33 und 32 überführt. Dies läßt sich am besten in bezug auf die Fig. 1 veranschaulichen. Wenn der Doppelhaken 13 am oberen Ende des Schwenkhebels 15 mit dem Messer 11B in Eingriff steht und der Doppelhaken am unteren Ende des Schwenkhebels 15 mit dem Messer 11D in Eingriff steht, so führt eine Bewegung des Messers 11D nach außen und eine Bewegung des Messers 11B nach innen dazu, daß der Schwenkhebel 15 bezüglich der Messer geschwenkt wird, wobei jedoch der Anlenkpunkt der Stange 22 an dem Schwenkhebel 15 in seiner Position nicht verändert wird, so daß trotz Bewegung der Messer der durch die Stange 22 angesteuerte Schaft z.B. in der oberen Position gemäß der Kurve 31 verbleibt. Wenn andererseits der obere Doppelhaken des Schwenkhebels 14 mit dem Messer 11A in Eingriff steht und der untere Doppelhaken des Schwenkhebels 14 mit dem Messer 11D in Eingriff steht, bewirkt eine Bewegung des Messers 11D nach außen und des Messers 11A nach innen, daß der Schwenkhebel 14 in Bewegungsrichtung der Messer parallel verschoben wird, so daß eine Verschiebung des über die angelenkte Stange 21 gesteuerten Schafts z.B. von der unteren in die obere Position stattfindet. Wenn weiter der obere Doppelhaken des Schwenkhebels 14 mit dem Messer 11A in Eingriff steht und der untere Doppelhaken mit dem Messer 11C in Eingriff steht, bewirkt eine Bewegung des Messers 11C nach außen und des Messers 11A nach innen, daß der Schwenkhebel 14 wieder um den Punkt, an dem die Stange 21 angelenkt ist, geschwenkt wird, ohne daß dieser Punkt seine Lage verändert. Dies entspricht der gleichbleibenden unteren Stellung des Schafts gemäß der Kurve 34. Wenn weiter der obere Doppelhaken des Schwenkhebels 15 mit dem Messer 11B in Eingriff steht und der untere Doppelhaken mit dem Messer 11C in Eingriff steht, führt eine Bewegung des Messers 11B nach innen und des Messers 11C nach außen zu einer Parallelverschiebung des Schwenkhebels 15 in Bewegungsrichtung der Messer, so daß dadurch über die am Schwenkhebel 15 angelenkte Stange 22 der Schaft von oben nach unten gemäß der Kurve 33 geschoben wird. Nach einem halben Zyklus ist wieder ein Zustand mit offenem Fach erreicht, in dem ein weiterer Schußfaden (Schuß 2) eingetragen werden kann. In der zweiten Hälfte des Zyklus drehen sich die Kurvenzylinder um weitere 180° weiter, wobei die Messerabstände der Messerpaare 11A, 11B und 11C, 11D sich wieder gegenphasig zueinander verändern.As the time progresses, the knives move in the two Knife pairs 11A, 11B and 11C, 11D in opposite phase to each other, i.e. according to curve 35, knives 11C and 11D move apart, while according to curve 36 the knives 11A and 11D reduce their mutual distance. Whichever the knife the double hooks at the respective ends of the swivel levers are hooked, the correspondingly controlled shaft in its upper or lower position according to curves 31 and 34 maintained or in the corresponding opposite transferred lower and upper position according to curves 33 and 32. This can best be illustrated with reference to FIG. 1. If the double hook 13 at the top of the Swivel lever 15 is engaged with the knife 11B and the Double hook at the lower end of the pivot lever 15 with the knife 11D is engaged, the knife 11D moves outward and moving the knife 11B inward that the pivot lever 15 is pivoted with respect to the knives, however, the pivot point of the rod 22 on the pivot lever 15 is not changed in its position, so that despite movement the knife the shaft driven by the rod 22 e.g. remains in the upper position according to curve 31. If on the other hand, the upper double hook of the pivot lever 14 with the Knife 11A is engaged and the lower double hook of the Swiveling lever 14 engages with the knife 11D an outward movement of the knife 11D and the knife 11A inwards that the pivot lever 14 in the direction of movement of the Knife is moved in parallel, so that a shift of the shaft controlled by the articulated rod 21 e.g. of the lower to the upper position. If further the upper double hook of the pivot lever 14 with the knife 11A in Is engaged and the lower double hook with the knife 11C in If there is engagement, the knife 11C moves afterwards outside and the knife 11A inward that the pivot lever 14 again pivoted about the point at which the rod 21 is articulated without this point changing its position. This corresponds to the constant lower position of the shaft according to curve 34. If the upper double hook of the Swivel lever 15 is engaged with the knife 11B and the lower double hook is engaged with the knife 11C, leads an inward movement of the knife 11B and the knife 11C outward to a parallel displacement of the pivot lever 15 in the direction of movement of the knife, so that thereby on the Swivel lever 15 articulated rod 22 of the shaft from above is pushed down according to curve 33. After half Cycle is again an open subject state in which another weft (weft 2) can be entered. In In the second half of the cycle, the cam cylinders turn another 180 ° further, the knife distances of the knife pairs 11A, 11B and 11C, 11D change again in phase opposition to one another.

Im Gegensatz dazu ist in der Fig. 4 der Arbeitsablauf in einer Geschlossenfach-Schaftmaschine gezeigt, wie er mit der Vorrichtung gemäß der vorliegenden Erfindung erzielbar wäre, wenn die Bewegung der beiden Messerpaare 11A, 11B und 11C, 11D mit modifizierender Phasenlage abläuft. Die Kurve 39 zeigt für diesen Fall den Abstand der Messer 11C, 11D, und Kurve 40 zeigt den Abstand der Messer 11A, 11B. Zuerst wird gemäß Kurve 40 das geöffnete Messerpaar 11A, 11B in die Geschlossenstellung bewegt, wodurch jeder Schaft in die Geschlossenfach-Position geht. Dann wird das geschlossene Messerpaar 11C, 11D gemäß Kurve 39 auseinanderbewegt. Je nach Ansteuerung der Doppelhaken bewegen sich die Schäfte in die Hoch- oder Tiefposition.In contrast, in FIG. 4 the workflow is in one Closed compartment dobby shown how it works with the device would be achievable according to the present invention if the Movement of the two pairs of knives 11A, 11B and 11C, 11D with modifying Phasing expires. The curve 39 shows for this Fall the distance of the knives 11C, 11D, and curve 40 shows that Distance of the knives 11A, 11B. First, according to curve 40, the open one Pair of knives 11A, 11B moved to the closed position, whereby each shaft goes into the closed compartment position. Then the closed pair of blades 11C, 11D is moved apart according to curve 39. Move depending on the control of the double hook the stems in the high or low position.

In der Fig. 5 ist die Arbeitsweise der erfindungsgemäßen Fachbildungsvorrichtung bei Betrieb als Teilgeschlossenfach-Schaftmaschine gezeigt. Dabei bezeichnen die oberen Kurven 41 bis 44 die Fachbewegung, während die unteren Kurven 45 und 46 jeweils den Abstand der Messer 11A, 11B und 11C, 11D darstellen. Am Beginn des Zyklus zum Zeitpunkt t0 ist der Abstand der Messer 11A, 11B gemäß der Kurve 45 groß, während der Abstand der Messer 11C, 11D klein ist. Zum Zeitpunkt t1 wird der Abstand der Messer 11A, 11B gemäß der Kurve 45 verringert. Dadurch beginnen sämtliche Schäfte sich in Richtung auf eine Mittelposition zu bewegen. Zum Zeitpunkt t2 wird noch bevor der Abstand der Messer 11A, 11B gemäß Kurve 45 die Endstellung mit kleinem Abstand erreicht hat, der Abstand der Messer 11C, 11D gemäß Kurve 46 vergrößert. In Abhängigkeit davon, an welchem der Messer der beiden Messerpaare die oberen und unteren Enden der Schwenkhebel mit den Verbindungsvorrichtungen 13 jeweils eingeklinkt sind, wird entweder die Bewegung der Messer gegeneinander kompensiert, so daß gemäß den Kurven 41 und 44 zwischen den Zeitpunkten t2 und t4 die Schwenkhebel nur geschwenkt werden, wogegen der Anlenkpunkt der Stangen 22 an den Schwenkhebeln seine Position beibehält, oder es wird die Fachbewegung beschleunigt, wenn die Enden der Schwenkhebel derart mit den Messern verbunden sind, daß beide Enden jeweils in der gleichen Richtung bewerden. Zum Zeitpunkt t3 haben gemäß dem letzteren Fall die Schäfte eine Mittelposition erreicht. Zum Zeitpunkt t4 ist die Bewegung der Messer 11A, 11B gemäß Kurve 45 beendet, während die Bewegung der Messer 11C, 11D noch bis zum Zeitpunkt t5 andauert. In der Periode zwischen den Zeitpunkten t4 und t5 wird mit verlangsamter Geschwindigkeit der Fachbewegung das Fach wieder vollständig geöffnet, das bis zum Zeitpunkt t6 für den Eintrag des zweiten Schußfadens offenbleibt. In der zweiten Hälfte des Zyklus wiederholt sich dieser Vorgang in umgekehrter Richtung wie in der Fig. 5 gezeigt ist. Der Betrieb als Teilgeschlossenfach-Schaftmaschine stellt somit eine Mischform zwischen der Offenfach- und der Geschlossenfach-Schaftmaschine dar.5 shows the mode of operation of the shed forming device according to the invention when operated as a partially closed shed dobby. The upper curves 41 to 44 denote the tray movement, while the lower curves 45 and 46 each represent the distance between the knives 11A, 11B and 11C, 11D. At the beginning of the cycle at time t 0 , the distance between the knives 11A, 11B according to curve 45 is large, while the distance between the knives 11C, 11D is small. At time t 1 , the distance between the knives 11A, 11B is reduced according to curve 45. As a result, all shafts begin to move towards a middle position. At time t 2 , before the distance between the knives 11A, 11B according to curve 45 has reached the end position with a small distance, the distance between the knives 11C, 11D according to curve 46 is increased. Depending on which of the two pairs of knives the upper and lower ends of the pivot levers with the connecting devices 13 are latched in, either the movement of the knives against each other is compensated, so that according to curves 41 and 44 between times t 2 and t 4 the swivel levers are only swiveled, whereas the articulation point of the rods 22 on the swivel levers maintains their position, or the specialist movement is accelerated if the ends of the swivel levers are connected to the knives in such a way that both ends are each in the same direction. According to the latter case, the stems have reached a middle position at time t 3 . At time t 4 , the movement of the knives 11A, 11B according to curve 45 has ended, while the movement of the knives 11C, 11D still continues until the time t 5 . In the period between the times t 4 and t 5 , the compartment is fully opened again at a slower speed of the shed movement, which compartment remains open until the time t 6 for the insertion of the second weft thread. In the second half of the cycle, this process is repeated in the opposite direction as shown in FIG. 5. The operation as a partially closed shed dobby thus represents a hybrid between the open shed and the closed shed dobby.

Claims (10)

  1. Shed-forming device for actuating shafts in a heald machine having a pair of mutually opposed knives (11A, 11B) which can be moved against one another and having a plurality of pivoting levers (14, 15) which are connected to the shafts and of which the first end, which faces towards the knives, is provided with a first connecting device (13) with the aid of which the pivoting levers can be selectively connected to one of the knives, and having first profile arrangements (16) which are rotatable about spindles (17) which substantially extend in the direction of movement of the knives (11A, 11B), the said profile arrangements (16) having, in each case, at least one profile (24) which revolves around their axis of rotation in a closed line and migrates in the axial direction, and each knife (11A, 11B) being in engagement with at least one profile (24), characterised in that the pivoting levers are provided, at their second end, with a second connecting device with the aid of which they can be selectively connected to one knife of a second pair of mutually opposed knives (11C, 11D) which can be moved against one another, and that second profile arrangements are provided, the knives of the second pair of knives being in engagement with the profile constructed on the second profile arrangements.
  2. Shed-forming device for actuating shafts in a heald machine having a pair of mutually opposed knives (11A, 11B) which can be moved against one another and having a plurality of pivoting levers (14, 15) which are connected to the shafts and of which the first end, which faces towards the knives, is provided with a first connecting device (13) with the aid of which the pivoting levers can be selectively connected to one of the knives, and having first profile arrangements (16) which are rotatable about spindles (17) which substantially extend in the direction of movement of the knives (11A, 11B), the said profile arrangements (16) having, in each case, at least one profile (24) which revolves around their axis of rotation in a closed line and migrates in the axial direction, and each knife (11A, 11B) being in engagement with at least one profile (24), characterised in that the pivoting levers are provided, at their second end, with a second connecting device with the aid of which they can be selectively connected to one knife of a second pair of mutually opposed knives (11C, 11D) which can be moved against one another, the knives of the second pair being, in each case, in engagement with at least one profile (24) of the first profile arrangements.
  3. Shed-forming machine according to claim 1, characterised in that the first and second profile arrangements can be driven jointly via a gear unit.
  4. Shed-forming device according to one of claims 1 to 3, characterised in that the profile arrangements have cam cylinders in which there are constructed grooves in which pegs constructed on the ends of the knives engage.
  5. Shed-forming device according to claim 4, characterised in that cam rollers engaging in the grooves are provided on the pegs.
  6. Shed-forming device according to one of claims 1 to 5, characterised in that the knives of the first pair of knives can be moved simultaneously with the knives of the second pair of knives in an oppositely phased manner.
  7. Shed-forming device according to one of claims 1 to 5, characterised in that the two pairs of knives can be moved in succession and that, in stop positions of the two pairs of knives, intervals between the knives which are mutually complementary in each case can be assumed.
  8. Shed-forming device according to one of claims 1 to 5, characterised in that the pairs of knives can be moved in such a way that, during a first portion of the cycle, the first pair of knives moves and the second pair of knives remains in a stop position, that in a succeeding portion of the cycle, both pairs of knives move simultaneously and that, in a further succeeding portion of the cycle, only the second pair of knives moves while the first pair of knives remains in a stop position, the said two pairs of knives having, in portions of the cycle without any movement of a pair of knives, intervals between the knives which are mutually complementary in each case.
  9. Shed-forming device according to one of claims 1 to 8, characterised in that the profile arrangements have, in each case, two mutually offset profiles which are associated, in each case, with one knife of a pair of knives.
  10. Shed-forming device according to one of claims 1 to 7, characterised in that the connecting device (13) comprises a double hook which can be selectively brought into engagement with one of the two knives of an associated pair of knives.
EP95113778A 1994-09-01 1995-09-01 Shedding device Expired - Lifetime EP0699786B1 (en)

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DE9414192U DE9414192U1 (en) 1994-09-01 1994-09-01 Shed forming device
DE9414192U 1994-09-01

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EP0699786A3 EP0699786A3 (en) 1997-09-03
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DE9414192U1 (en) * 1994-09-01 1994-10-27 Staeubli & Trumpelt Shed forming device
DE19861000B4 (en) * 1997-02-06 2006-11-02 Texo Ab Dobby assembly - has a number of pedals at a pedal spindle with a common drive through a single cam drum
DE19804041B4 (en) * 1997-02-06 2005-10-06 Texo Ab Dobby for controlling the movements of the shaft frame of a weaving machine
DE10343377B3 (en) † 2003-09-17 2005-04-28 Groz Beckert Kg Shaft drive for weaving shafts
EP2278052B1 (en) 2009-07-20 2014-03-05 Groz-Beckert KG Shaft drive for a heald frame of a loom

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DE32559C (en) * ch. J. kane und R. E. lester in New-York Harnesses for mechanical looms
DE2338124C3 (en) * 1973-07-27 1980-05-08 Johann Kaiser Gmbh & Co Kg, Maschinenfabrik Und Eisengiesserei, 8580 Bayreuth Double-stroke dobby type Hattersley
CH643890A5 (en) * 1979-11-28 1984-06-29 Setafin Sa STEM DRIVE ON A ROTARY WEAVING MACHINE.
CH653385A5 (en) * 1981-05-15 1985-12-31 Setafin Sa Heald-frame drive on a circular weaving machine
FR2689913A1 (en) 1992-04-14 1993-10-15 Staubli Trumpelt Gmbh Maschine Mechanism for the alternative control of knives in heavy dobbies of the closed pitch type.
DE9414192U1 (en) * 1994-09-01 1994-10-27 Staeubli & Trumpelt Shed forming device

Also Published As

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DE59501355D1 (en) 1998-03-05
DE9414192U1 (en) 1994-10-27
EP0699786A3 (en) 1997-09-03
EP0699786A2 (en) 1996-03-06

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