EP0080453B1 - Circular loom - Google Patents

Circular loom Download PDF

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Publication number
EP0080453B1
EP0080453B1 EP82890139A EP82890139A EP0080453B1 EP 0080453 B1 EP0080453 B1 EP 0080453B1 EP 82890139 A EP82890139 A EP 82890139A EP 82890139 A EP82890139 A EP 82890139A EP 0080453 B1 EP0080453 B1 EP 0080453B1
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EP
European Patent Office
Prior art keywords
running
thread
circular loom
warp threads
machine frame
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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
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EP82890139A
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German (de)
French (fr)
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EP0080453A2 (en
EP0080453A3 (en
Inventor
Alfred Plammer
Hermann Weiss
Adolf Schachinger
Johann Schönberger
Johann Bloo
Bruno Dr. Mistlberger
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Lenzing AG
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Lenzing AG
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Publication of EP0080453A2 publication Critical patent/EP0080453A2/en
Publication of EP0080453A3 publication Critical patent/EP0080453A3/en
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Publication of EP0080453B1 publication Critical patent/EP0080453B1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D37/00—Circular looms

Definitions

  • the invention relates to a circular weaving machine with a machine frame, a rotor, which has a machined wavy groove on the outside and driver elements engaging in the groove, the driver elements being fastened to bands or cords which are deflected at least via upper deflection rollers and at a distance thread guides arranged from each other, the rotor drives a shooter via a driving roller and tensioning devices for the warp threads are also provided.
  • a circular loom of this type is known from US Pat. No. 1,720,151.
  • the warp threads are guided to form a compartment by means of strands, two strands each being connected at their ends by means of a band.
  • One of the belts is guided over an upper deflection roller and the opposite belt over a lower deflection roller.
  • the strands cause the circular weaving machine to have an extremely high overall height, which means that it is difficult to access the contactor bobbins, which makes changing the bobbin difficult.
  • the shooters of the known circular loom rest on a plate, which results in high friction between the shooters and the plate, so that the known circular loom is not suitable for higher weaving capacities.
  • a circular weaving machine in which strands carrying strands are also provided, which are guided over upper and lower deflection rollers, so that this known circular weaving machine also has a large overall height and, as a result, poor accessibility to the contactor bobbins .
  • Another disadvantage of the known circular weaving machine is that, despite the large overall height, the compartment is only insufficiently opened by the strands to allow the shooter to pass through, so that the shooter has to open it even further while passing through a compartment.
  • the warp threads can heat up as a result of the friction which occurs, which is disadvantageous in particular when weaving plastic threads and does not allow the production speed and thus the production output to rise above a certain level.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to develop a circular loom of the type described in such a way that it enables high production output and in particular its overall height for the sake of good accessibility to the contactor bobbins is considerably lower than in known machines, although despite this low overall height, a sufficiently wide open compartment is formed so that a shooter can pass through the compartment without rubbing contact with the warp threads.
  • the use of strands can be dispensed with, as a result of which the upper deflection roller can be arranged approximately at the height of the upper race.
  • the overall height of the machine according to the invention can be kept low, which ensures good access to the contactor coils.
  • the flexible band is only guided over an upper deflection roller and fastened to the stationary machine frame by means of a tension spring at an end opposite the driving element.
  • the flexible belt is shaped into an endless loop and runs over two deflection rollers.
  • a plurality of flexible bands or cords is expediently connected to a driver element.
  • the races advantageously have an approximately semicircular arc-shaped profile and the shooters' rollers are provided with an approximately quarter-circular arc-shaped counter-profile corresponding to this profile, the counter-profile extending beyond the apex of the race-ring profile.
  • the fit of the shooter between the upper and lower races means that the races can absorb the centrifugal and supporting forces of the shooter and the shooter is perfectly supported even at high weaving performance or high speed and that the noise level is kept within reasonable limits.
  • the tensioning devices for the warp threads are designed as spiral springs which are fixed at one end to the machine frame and at the other, movable end, each carry an eyelet which receives the warp thread, the movable part being movable between thread breakage or thread tension indicating and controlling stops.
  • FIG. 1 illustrates a partially sectioned side view of a circular loom in a schematic representation.
  • FIG. 2 shows a detail of FIG. 1 on an enlarged scale.
  • FIG. 3 shows a further embodiment in a representation analogous to FIG. 2.
  • Fig. 4 is a section along the line IV-IV of Fig. 2.
  • Figs. 5 and 6 a flexible band with thread guide members is shown, with Fig. 6 showing a side view in the direction of arrow VI of Fig. 5.
  • FIGS. 7, 8 and 9, 10 and 11, 12 show further embodiments in representations analogous to FIGS. 5 and 6.
  • 13 and 14 illustrate the guidance of a shooter, FIG.
  • FIGS. 15 and 16 show a further embodiment of a thread guide element, FIG. 15 illustrating a side view and FIG. 16 a section along the line XVI-XVI of FIG. 15.
  • the circular loom has a rotor 2 which is rotatably mounted and drivable in a machine frame 1 and which is arranged below a fixed reed 3.
  • the reed is delimited by an upper and lower race 4, 5, along which race at least one shooter 6 is guided by rollers 7.
  • a shaft is arranged in a circle arranged concentrically with the rotor 2, the shaft having a wavy groove 10 machined on the outside of the rotor 2 and engaging driver elements 11 designed as sliding blocks.
  • the driver elements 11 can have rotatable rollers 11 ′ which are inserted into the groove 10.
  • Each of the driver elements 11 carries a plurality of flexible bands 12 or cords, each of which is guided over an upper 13 and lower deflection roller 14 rotatably mounted on the machine frame 1.
  • each driver element 11 is guided along two parallel and vertically arranged guide rods 15 which pass through the driver element 11 and are rigidly fastened to the machine frame 1.
  • Thread guiding elements 16, for example eyelets are arranged at a distance from one another on each band 12, the passages 17 of the eyelets 16 coming to lie on opposite side edges 18, 19 of each band 12 (cf. FIG. 5), so that the threads 9 between Adjacent belts, which are fastened at a distance 20 from one another on the driver element, can be threaded through.
  • This effect is also achieved when cords are used, in conjunction with eyelets (FIGS. 15, 16) that are specially designed as two parts and can be clipped onto the cords, by inclining at least one deflection roller 13, 14.
  • the distance between the eyelets is chosen so large that when the compartment 8 is opened to the maximum, as shown in FIG. 2, the upper thread 9 rests on the upper race 4 and the lower thread 9 on the lower race 5. This makes it possible to move the shooter 6 through the compartment 8 without the shooter coming into contact with the warp threads 9.
  • the shooter 6 has a support body 21 which carries the weft bobbin 22.
  • the rollers 7 are guided on the upper and lower races 4, 5 of the reed 3 each having a semicircular arc profile.
  • the counter-profile of the rollers is adapted to the semicircular arc profile of the races 4, 5 and is approximately quarter-circular in shape, extending beyond the apex of the race profile, so that the rollers 7 transmit both the centrifugal force and the supporting forces to the races and prevent the shooter 6 from tipping over at a standstill becomes.
  • the shooter 6 is driven by means of a driver roller 23 which is freely rotatably mounted on the rotor 2 and which bears against one of the rollers 7 of the shooter when the rotor rotates.
  • FIG. 13 illustrates the movement of the shooter 6 through the compartment 8. It can be seen that the warp threads 9 are simply rolled over without any sliding movement, as a result of which the friction between warp threads 9 and shooters 6 or warp threads 9 and driving roller 23 is reduced to a minimum .
  • a modified embodiment of the belts connected to a driver element 11 is shown.
  • a band 25 corresponding to the width 24 of a driver element 11 is fastened to the driver element, which has slots 26 in the area of the compartment in order to allow the warp threads 9 to pass through.
  • the straps 12 attached to a driver element 11 are not endless, but each strap 12 ′ is attached to the end 27 opposite the driver element 11 by means of a spring 28 on the machine frame 1.
  • the bands 12 ' are held under tension by the springs 28.
  • FIGS. 11 and 12 also shows a band 25 ′ which is wide in accordance with the width 24 of the driver element 11 and is provided with slots 26 in the region in which the eyelets 16 lie, through which the warp threads 9 can pass .
  • the end 29 of the belt opposite the driver element is again formed in one piece and fastened to the machine frame 1 by means of a single spring 30.
  • support rollers 31 are rotatably mounted on the machine frame 1 at a height just below the lower race.
  • the bands 12, 12 ', 25, 25' can be designed as flat belts, round belts, toothed belts, cords, etc.
  • the warp threads 9 are tensioned to form an optimal compartment 8 by means of tensioning devices 32, which are designed as spiral springs. These spiral springs are fastened at one end to a ring 33 which is fixed to the machine frame, their other end carries an eyelet 34 through which the warp threads 9 are guided. If a warp thread 9 breaks, the spiral spring 32 exciting this thread 9 springs outwards until it rests against a fixed stop 35 designed as a ring concentric with the rotor 2. This triggers a contact that indicates the thread break.
  • tensioning devices 32 which are designed as spiral springs. These spiral springs are fastened at one end to a ring 33 which is fixed to the machine frame, their other end carries an eyelet 34 through which the warp threads 9 are guided. If a warp thread 9 breaks, the spiral spring 32 exciting this thread 9 springs outwards until it rests against a fixed stop 35 designed as a ring concentric with the rotor 2. This triggers a contact that indicates the thread break.
  • the spiral spring 32 springs inwards until it rests against a stop 36, which is provided between the spiral spring 32 and reed 3 and is also designed as a ring 2 concentric with the rotor, and also triggers a display.

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

Description

Die Erfindung betrifft eine Rundwebmaschine mit einem Maschinengestell, einem Rotor, der an der Aussenseite eine eingearbeitete wellenförmig verlaufende Nut und in die Nut eingreifende Mitnehmerelemente aufweist, wobei die Mitnehmerelemente an Bändern bzw. Schnüren befestigt sind, welche mindestens über obere Umlenkrollen umgelenkt sind und im Abstand voneinander angeordnete Fadenführungsorgane tragen, der Rotor über eine Mitnehmerrolle einen Schützen antreibt und wobei weiters Spannvorrichtungen für die Kettfäden vorgesehen sind.The invention relates to a circular weaving machine with a machine frame, a rotor, which has a machined wavy groove on the outside and driver elements engaging in the groove, the driver elements being fastened to bands or cords which are deflected at least via upper deflection rollers and at a distance thread guides arranged from each other, the rotor drives a shooter via a driving roller and tensioning devices for the warp threads are also provided.

Eine Rundwebmaschine dieser Art ist aus der US-PS 1 720 151 bekannt. Die Kettfäden sind zur Bildung eines Faches mittels Litzen geführt, wobei jeweils zwei Litzen an ihren Enden mittels jeweils eines Bandes verbunden sind. Eines der Bänder ist über eine obere Umlenkrolle und das gegenüberliegende Band über eine untere Umlenkrolle geführt. Die Litzen verursachen eine extrem grosse Bauhöhe der Rundwebmaschine und bedingen dadurch eine schlechte Zugänglichkeit zu den Schützenspulen, wodurch ein Spulenwechsel nur umständlich durchzuführen ist. Die Schützen der bekannten Rundwebmaschine liegen auf einer Platte auf, wodurch es zu einer hohen Reibung zwischen den Schützen und der Platte kommt, so dass die bekannte Rundwebmaschine für höhere Webleistungen nicht geeignet ist.A circular loom of this type is known from US Pat. No. 1,720,151. The warp threads are guided to form a compartment by means of strands, two strands each being connected at their ends by means of a band. One of the belts is guided over an upper deflection roller and the opposite belt over a lower deflection roller. The strands cause the circular weaving machine to have an extremely high overall height, which means that it is difficult to access the contactor bobbins, which makes changing the bobbin difficult. The shooters of the known circular loom rest on a plate, which results in high friction between the shooters and the plate, so that the known circular loom is not suitable for higher weaving capacities.

Aus der AT-PS 363 873 ist eine Rundwebmaschine bekannt, bei der ebenfalls Litzen tragende Bänder, die über obere und untere Umlenkrollen geführt sind, vorgesehen sind, so dass auch diese bekannte Rundwebmaschine eine grosse Bauhöhe und eine dadurch bedingte schlechte Zugänglichkeit zu den Schützenspulen aufweist. Ein weiterer Nachteil der bekannten Rundwebmaschine ist darin zu sehen, dass trotz der grossen Bauhöhe das Fach mittels der Litzen zum Durchtritt des Schützen nur ungenügend geöffnet wird, so dass der Schützen selbst während des Durchlaufens eines Faches dieses noch weiter öffnen muss. Dadurch kann es infolge der dabei auftretenden Reibung zu einer Erwärmung der Kettfäden kommen, was insbesondere beim Verweben von Kunststoffäden nachteilig ist und die Produktionsgeschwindigkeit und damit die Produktionsleistung nicht über eine bestimmte Höhe steigen lässt.From AT-PS 363 873 a circular weaving machine is known, in which strands carrying strands are also provided, which are guided over upper and lower deflection rollers, so that this known circular weaving machine also has a large overall height and, as a result, poor accessibility to the contactor bobbins . Another disadvantage of the known circular weaving machine is that, despite the large overall height, the compartment is only insufficiently opened by the strands to allow the shooter to pass through, so that the shooter has to open it even further while passing through a compartment. As a result, the warp threads can heat up as a result of the friction which occurs, which is disadvantageous in particular when weaving plastic threads and does not allow the production speed and thus the production output to rise above a certain level.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Rundwebmaschine der eingangs beschriebenen Art derart weiterzubilden, dass sie eine hohe Produktionsleistung ermöglicht und insbesondere ihre Bauhöhe zwecks guter Zugänglichkeit zu den Schützenspulen wesentlich niedriger als bei bekannten Maschinen ist, wobei trotz dieser geringen Bauhöhe ein genügend weit geöffnetes Fach gebildet wird, so dass ein Schützen ohne schleifende Berührung mit den Kettfäden durch das Fach hindurchtreten kann.The invention aims to avoid these disadvantages and difficulties and has as its object to develop a circular loom of the type described in such a way that it enables high production output and in particular its overall height for the sake of good accessibility to the contactor bobbins is considerably lower than in known machines, although despite this low overall height, a sufficiently wide open compartment is formed so that a shooter can pass through the compartment without rubbing contact with the warp threads.

Diese Aufgabe wird erfindungsgemäss durch die Kombination der folgenden Merkmale gelöst:

  • a) dass im Maschinengestell ein oberer und unterer Laufring zur Führung des Schützen angeordnet sind, dessen Laufrollen zwischen Eingriffsflächen des oberen und unteren Laufringes eingepasst sind,
  • b) dass zwischen den Laufringen ein Riet zum Sortieren der Kettfäden vorgesehen ist,
  • c) dass die Bänder der Schäftung über ihre ganze Länge flexibel ausgebildet sind und unmittelbar die Fadenösen tragen,
  • d) dass sich die oberen Umlenkrollen für die flexiblen Bänder in Höhe des oberen Laufringes befinden,
  • e) dass der Abstand zwischen oberem und unterem Laufring sowie der maximale Abstand zwischen den Fadenösen an dem umgelenkten flexiblen Band bzw. der Schnur so bemessen ist, dass der Fachungswinkel ausreichend gross ist, um eine Berührung der Kettfäden mit dem Schützen zu verhindern.
According to the invention, this object is achieved by combining the following features:
  • a) that an upper and lower race for guiding the shooter are arranged in the machine frame, the rollers of which are fitted between engagement surfaces of the upper and lower race,
  • b) that a reed for sorting the warp threads is provided between the races,
  • c) that the bands of the shaft are flexible over their entire length and directly carry the thread eyelets,
  • d) that the upper pulleys for the flexible belts are at the level of the upper race,
  • e) that the distance between the upper and lower race as well as the maximum distance between the thread eyelets on the deflected flexible band or the cord is dimensioned such that the wedge angle is sufficiently large to prevent the warp threads from coming into contact with the shooter.

Durch unmittelbares Anbringen der Fadenösen an den Bändern kann man auf die Verwendung von Litzen verzichten, wodurch die obere Umlenkrolle etwa in der Höhe des oberen Laufringes angeordnet werden kann. Trotz der besonders weiten Öffnung des Faches lässt sich bei der erfindungsgemässen Maschine die Bauhöhe niedrig halten, wodurch eine gute Zugänglichkeit zu den Schützenspulen gewährleistet ist. Durch die Anordnung der Fadenösen unmittelbar an den Bändern wird die Masse der die Kettfäden bewegenden Maschinenteile wesentlich verringert, was für den Schnellauf, die Laufruhe und den Geräuschpegel der Maschine von Bedeutung ist.By attaching the thread eyelets directly to the belts, the use of strands can be dispensed with, as a result of which the upper deflection roller can be arranged approximately at the height of the upper race. Despite the particularly wide opening of the compartment, the overall height of the machine according to the invention can be kept low, which ensures good access to the contactor coils. By arranging the thread loops directly on the belts, the mass of the machine parts moving the warp threads is significantly reduced, which is important for the fast running, smooth running and the noise level of the machine.

Gemäss einer bevorzugten Ausführungsform ist das flexible Band nur über eine obere Umlenkrolle geführt und an einem dem Mitnehmerelement entgegengesetzten Ende mittels einer Zugfeder am ortsfesten Maschinengestell befestigt. Nach einer anderen vorteilhaften Ausführungsform ist das flexible Band zu einer Endlosschleife geformt und läuft über zwei Umlenkrollen. Zweckmässig ist eine Mehrzahl von flexiblen Bändern oder Schnüren mit einem Mitnehmerelement verbunden. Vorteilhaft weisen die Laufringe ein etwa halbkreisbogenförmiges Profil auf und sind die Laufrollen des Schützen mit einem diesem Profil entsprechenden etwa viertelkreisbogenförmigen Gegenprofil versehen, wobei sich das Gegenprofil über den Scheitel des Laufringprofiles hinauserstreckt. Die Einpassung des Schützen zwischen den oberen und unteren Laufring hat zur Folge, dass die Laufringe die Flieh- und Stützkräfte des Schützen aufnehmen können und der Schütz auch bei hoher Webleistung bzw. hoher Geschwindigkeit einwandfrei abgestützt ist und sich der Lärmpegel in zumutbaren Grenzen hält.According to a preferred embodiment, the flexible band is only guided over an upper deflection roller and fastened to the stationary machine frame by means of a tension spring at an end opposite the driving element. According to another advantageous embodiment, the flexible belt is shaped into an endless loop and runs over two deflection rollers. A plurality of flexible bands or cords is expediently connected to a driver element. The races advantageously have an approximately semicircular arc-shaped profile and the shooters' rollers are provided with an approximately quarter-circular arc-shaped counter-profile corresponding to this profile, the counter-profile extending beyond the apex of the race-ring profile. The fit of the shooter between the upper and lower races means that the races can absorb the centrifugal and supporting forces of the shooter and the shooter is perfectly supported even at high weaving performance or high speed and that the noise level is kept within reasonable limits.

Um die Kettfäden auch bei hoher Produktionsleistung der Maschine zwecks einwandfreier Fachbildung in möglichst gespanntem Zustand zu halten, wobei ein Fadenbruch und eine Fadenüberspannung eines Kettfadens feststellbar sind, sind die Spannvorrichtungen für die Kettfäden als Biegefedern ausgebildet, die mit einem Ende ortsfest am Maschinengestell befestigt sind und am anderen, beweglichen Ende jeweils eine den Kettfaden aufnehmende Öse tragen, wobei der bewegliche Teil zwischen Fadenbruch bzw. Fadenüberspannung anzeigenden und steuernden Anschlägen bewegbar ist.In order to keep the warp threads as tensioned as possible, even with high production output of the machine for the purpose of perfect shed formation, whereby a thread breakage and thread tension of a warp thread can be determined, the tensioning devices for the warp threads are designed as spiral springs which are fixed at one end to the machine frame and at the other, movable end, each carry an eyelet which receives the warp thread, the movable part being movable between thread breakage or thread tension indicating and controlling stops.

Die Erfindung ist nachfolgend anhand der Zeichnung an mehreren Ausführungsbeispielen näher erläutert, wobei Fig. 1 eine teilweise geschnittene Seitenansicht einer Rundwebmaschine in schematischer Darstellung veranschaulicht. Fig. 2 gibt ein Detail der Fig. 1 in vergrössertem Massstab wieder. Fig. 3 zeigt in zu Fig. 2 analoger Darstellung eine weitere Ausführungsform. Fig. 4 ist ein Schnitt gemäss der Linie IV-IV der Fig. 2. In den Fig. 5 und 6 ist ein flexibles Band mit Fadenführungsorganen gezeigt, wobei Fig. 6 eine Seitenansicht in Richtung des Pfeiles VI der Fig. 5 wiedergibt. Die Fig. 7, 8 sowie 9, 10 und 11,12 zeigen in zu den Fig. 5 und 6 analogen Darstellungen weitere Ausführungsformen. Die Fig. 13 und 14 veranschaulichen die Führung eines Schützen, wobei Fig. 14 eine Seitenansicht in Richtung des Pfeiles XIV der Fig. 13 ist. In den Fig. 15 und 16 ist eine weitere Ausführungsform eines Fadenführungsorganes gezeigt, wobei Fig. 15 eine Seitenansicht und Fig. 16 einen Schnitt gemäss der Linie XVI-XVI der Fig. 15 veranschaulicht.The invention is based on the drawing tion explained in more detail using several exemplary embodiments, wherein Fig. 1 illustrates a partially sectioned side view of a circular loom in a schematic representation. FIG. 2 shows a detail of FIG. 1 on an enlarged scale. FIG. 3 shows a further embodiment in a representation analogous to FIG. 2. Fig. 4 is a section along the line IV-IV of Fig. 2. In Figs. 5 and 6, a flexible band with thread guide members is shown, with Fig. 6 showing a side view in the direction of arrow VI of Fig. 5. FIGS. 7, 8 and 9, 10 and 11, 12 show further embodiments in representations analogous to FIGS. 5 and 6. 13 and 14 illustrate the guidance of a shooter, FIG. 14 being a side view in the direction of arrow XIV of FIG. 13. FIGS. 15 and 16 show a further embodiment of a thread guide element, FIG. 15 illustrating a side view and FIG. 16 a section along the line XVI-XVI of FIG. 15.

Die Rundwebmaschine weist einen in einem Maschinengestell 1 drehbar gelagerten und antreibbaren Rotor 2 auf, der unterhalb eines ortsfesten Rietes 3 angeordnet ist. Das Riet wird von einem oberen und unteren Laufring 4, 5 begrenzt, entlang welcher Laufringe mindestens ein Schützen 6 mittels Laufrollen 7 geführt ist.The circular loom has a rotor 2 which is rotatably mounted and drivable in a machine frame 1 and which is arranged below a fixed reed 3. The reed is delimited by an upper and lower race 4, 5, along which race at least one shooter 6 is guided by rollers 7.

Zur Bildung eines Faches 8 durch die Kettfäden 9 ist in einem konzentrisch zum Rotor 2 angeordneten Kreis eine Schäftung angeordnet, welche Schäftung eine an der Aussenseite des Rotors 2 eingearbeitete wellenförmige Nut 10 und in die Nut eingreifende, als Gleitsteine ausgebildete Mitnehmerelemente 11 aufweist. Um die Reibung zwischen den Mitnehmerelementen 11 und dem Rotor auf ein Minimum zu reduzieren, können die Mitnehmerelemente 11 drehbare Rollen 11' aufweisen, die in die Nut 10 eingesetzt sind.To form a compartment 8 through the warp threads 9, a shaft is arranged in a circle arranged concentrically with the rotor 2, the shaft having a wavy groove 10 machined on the outside of the rotor 2 and engaging driver elements 11 designed as sliding blocks. In order to reduce the friction between the driver elements 11 and the rotor to a minimum, the driver elements 11 can have rotatable rollers 11 ′ which are inserted into the groove 10.

Jedes der Mitnehmerelemente 11 trägt eine Mehrzahl flexibler Bänder 12 bzw. Schnüre, die jeweils über eine am Maschinengestell 1 drehbar gelagerte obere 13 und untere Umlenkrolle 14 geführt sind. Jedes Mitnehmerelement 11 ist zwecks genauer vertikaler Führung entlang von zwei parallel und vertikal angeordneten, das Mitnehmerelement 11 durchsetzenden Führungsstangen 1 5, die starr am Maschinengestell 1 befestigt sind, geführt.Each of the driver elements 11 carries a plurality of flexible bands 12 or cords, each of which is guided over an upper 13 and lower deflection roller 14 rotatably mounted on the machine frame 1. For the purpose of precise vertical guidance, each driver element 11 is guided along two parallel and vertically arranged guide rods 15 which pass through the driver element 11 and are rigidly fastened to the machine frame 1.

An jedem Band 12 sind im Abstand voneinander angeordnete Fadenführungsorgane 16, beispielsweise Ösen, befestigt, wobei die Durchlässe 17 der Ösen 16 an gegenüberliegenden Seitenkanten 18, 19 jedes Bandes 12 (vgl. Fig. 5) zu liegen kommen, so dass die Fäden 9 zwischen benachbarten Bändern, die im Abstand 20 voneinander am Mitnehmerelement befestigt sind, hindurchgefädelt werden können. Dieser Effekt wird auch bei Verwendung von Schnüren, in Verbindung mit speziell als zweiteilig ausgebildeten, auf die Schnüre aufklipsbaren Ösen (Fig. 15, 16) durch Schrägstellung mindestens einer Umlenkrolle 13, 14 erreicht. Der Abstand der Ösen ist so gross gewählt, dass bei maximal geöffnetem Fach 8, wie es in Fig. 2 dargestellt ist, der obere Faden 9 am oberen Laufring 4 und der untere Faden 9 am unteren Laufring 5 anliegt. Dadurch ist es.möglich, den Schützen 6 durch das Fach 8 zu bewegen, ohne dass der Schützen mit den Kettfäden 9 in Berührung gelangt.Thread guiding elements 16, for example eyelets, are arranged at a distance from one another on each band 12, the passages 17 of the eyelets 16 coming to lie on opposite side edges 18, 19 of each band 12 (cf. FIG. 5), so that the threads 9 between Adjacent belts, which are fastened at a distance 20 from one another on the driver element, can be threaded through. This effect is also achieved when cords are used, in conjunction with eyelets (FIGS. 15, 16) that are specially designed as two parts and can be clipped onto the cords, by inclining at least one deflection roller 13, 14. The distance between the eyelets is chosen so large that when the compartment 8 is opened to the maximum, as shown in FIG. 2, the upper thread 9 rests on the upper race 4 and the lower thread 9 on the lower race 5. This makes it possible to move the shooter 6 through the compartment 8 without the shooter coming into contact with the warp threads 9.

Der Schützen 6 weist einen Stützkörper 21 auf, der die Schussfadenspule 22 trägt. Die Laufrollen 7 sind am oberen und unteren, jeweils ein Halbkreisbogenprofil aufweisenden Laufring 4, 5 des Rietes 3 geführt. Das Gegenprofil der Laufrollen ist dem Halbkreisbogenprofil der Laufringe 4, 5 angepasst und etwa viertelkreisbogenförmig, sich über den Scheitel des Laufringprofiles hinauserstreckend ausgeführt, so dass die Laufrollen 7 sowohl die Fliehkraft als auch Stützkräfte auf die Laufringe übertragen und ein Auskippen des Schützen 6 im Stillstand vermieden wird.The shooter 6 has a support body 21 which carries the weft bobbin 22. The rollers 7 are guided on the upper and lower races 4, 5 of the reed 3 each having a semicircular arc profile. The counter-profile of the rollers is adapted to the semicircular arc profile of the races 4, 5 and is approximately quarter-circular in shape, extending beyond the apex of the race profile, so that the rollers 7 transmit both the centrifugal force and the supporting forces to the races and prevent the shooter 6 from tipping over at a standstill becomes.

Der Antrieb des Schützen 6 erfolgt mittels einer am Rotor 2 frei drehbar befestigten Mitnehmerrolle 23, die an einer der Laufrollen 7 des Schützen bei Drehung des Rotors anliegt.The shooter 6 is driven by means of a driver roller 23 which is freely rotatably mounted on the rotor 2 and which bears against one of the rollers 7 of the shooter when the rotor rotates.

Fig. 13 veranschaulicht das Hindurchbewegen des Schützen 6 durch das Fach 8. Es ist ersichtlich, dass die Kettfäden 9 ohne jede Gleitbewegung lediglich überrollt werden, wodurch die Reibung zwischen Kettfäden 9 und Schützen 6 bzw. Kettfäden 9 und Mitnehmerrolle 23 auf ein Minimum reduziert ist.13 illustrates the movement of the shooter 6 through the compartment 8. It can be seen that the warp threads 9 are simply rolled over without any sliding movement, as a result of which the friction between warp threads 9 and shooters 6 or warp threads 9 and driving roller 23 is reduced to a minimum .

In Fig. 7 und 8 ist eine geänderte Ausführungsform der mit einem Mitnehmerelement 11 verbundenen Bänder gezeigt. Bei dieser Ausführungsform ist ein der Breite 24 eines Mitnehmerelementes 11 entsprechend breites Band 25 am Mitnehmerelement befestigt, welches in dem Bereich des Faches 8 Schlitze 26 aufweist, um den Durchtritt der Kettfäden 9 zu ermöglichen.7 and 8, a modified embodiment of the belts connected to a driver element 11 is shown. In this embodiment, a band 25 corresponding to the width 24 of a driver element 11 is fastened to the driver element, which has slots 26 in the area of the compartment in order to allow the warp threads 9 to pass through.

Gemäss der in den Fig. 3, 9 und 10 dargestellten Ausführungsform sind die an einem Mitnehmerelement 11 befestigten Bänder 12 nicht endlos ausgeführt, sondern jedes Band 12' ist an dem dem Mitnehmerelement 11 entgegengesetzten Ende 27 mittels einer Feder 28 am Maschinengestell 1 befestigt. Bei Auf- und Abbewegung des Mitnehmerelementes 11 werden die Bänder 12' durch die Federn 28 gespannt gehalten.According to the embodiment shown in FIGS. 3, 9 and 10, the straps 12 attached to a driver element 11 are not endless, but each strap 12 ′ is attached to the end 27 opposite the driver element 11 by means of a spring 28 on the machine frame 1. When the driver element 11 moves up and down, the bands 12 'are held under tension by the springs 28.

Die in Fig. 11 und 12 veranschaulichte weitere Ausführungsform zeigt ebenfalls ein der Breite 24 des Mitnehmerelementes 11 entsprechend breites Band 25', das in dem Bereich, in dem die Ösen 16 liegen, mit Schlitzen 26 versehen ist, durch die die Kettfäden 9 hindurchtreten können. Das dem Mitnehmerelement entgegengesetzte Ende 29 des Bandes ist wiederum einteilig ausgebildet und mittels einer einzigen Feder 30 am Maschinengestell 1 befestigt. Zur besseren Führung der nicht endlosen Bänder 12' und 25' sind in Höhe knapp unterhalb des unteren Lauf-ringes Stützrollen 31 am Maschinengestell 1 drehbar gelagert.The further embodiment illustrated in FIGS. 11 and 12 also shows a band 25 ′ which is wide in accordance with the width 24 of the driver element 11 and is provided with slots 26 in the region in which the eyelets 16 lie, through which the warp threads 9 can pass . The end 29 of the belt opposite the driver element is again formed in one piece and fastened to the machine frame 1 by means of a single spring 30. For better guidance of the non-endless belts 12 'and 25', support rollers 31 are rotatably mounted on the machine frame 1 at a height just below the lower race.

Die Bänder 12, 12', 25, 25' können als Flachriemen, Rundriemen, Zahnriemen, Schnüre etc, ausgebildet sein.The bands 12, 12 ', 25, 25' can be designed as flat belts, round belts, toothed belts, cords, etc.

Die Kettfäden 9 werden zur Bildung eines optimalen Faches 8 mittels Spannvorrichtungen 32 gespannt, die als Biegefedern ausgeführt sind. Diese Biegefedern sind mit einem Ende an einem otsfest am Maschinengestell montierten Ring 33 befestigt, ihr anderes Ende trägt jeweils eine Öse 34, durch welche die Kettfäden 9 geführt werden, Durch Vor-und Zurückfedern derBiegefedern bleiben die Kettfäden stets optimal gespannt. Wenn ein Kettfaden 9 reisst, federt die diesen Faden 9 spannende Biegefeder 32 nach aussen, bis sie an einem ortsfesten, als zum Rotor 2 konzentrischer Ring ausgebildeten Anschlag 35 anliegt. Dabei wird ein Kontakt ausgelöst, der den Fadenriss anzeigt. Wird die Fadenspannung zu gross, federt die Biegefeder 32 so weit nach innen, bis sie an einem zwischen Biegefeder 32 und Riet 3 vorgesehenen, ebenfalls als zum Rotor 2 konzentrischer Ring ausgebildeten Anschlag 36 anliegt und ebenfalls eine Anzeige auslöst.The warp threads 9 are tensioned to form an optimal compartment 8 by means of tensioning devices 32, which are designed as spiral springs. These spiral springs are fastened at one end to a ring 33 which is fixed to the machine frame, their other end carries an eyelet 34 through which the warp threads 9 are guided. If a warp thread 9 breaks, the spiral spring 32 exciting this thread 9 springs outwards until it rests against a fixed stop 35 designed as a ring concentric with the rotor 2. This triggers a contact that indicates the thread break. If the thread tension becomes too great, the spiral spring 32 springs inwards until it rests against a stop 36, which is provided between the spiral spring 32 and reed 3 and is also designed as a ring 2 concentric with the rotor, and also triggers a display.

Claims (7)

1. A circular loom comprising a machine frame (1), a rotor (2) having a wave-likely extending groove (10) worked into the outer side of the rotor and catch elements (11) engaging in the groove, which catch elements (11) are fastened to bands (12, 12', 25, 25') or cords deflected about at least upper deflection pulleys (13) and carrying thread guiding organs (16, 16') arranged at a distance from one another, the rotor (2) driving a shuttle (6) via a catch roller (23), and wherein, furthermore, tensioning means (32) are provided for the warp threads (9), characterised by the combination of the following characteristic features:
a) that an upper and a lower running ring (4, 5) are arranged in the machine frame (1) for guiding the shuttle (6), whose running rollers (7) are fitted between engaging surfaces of the upper and lower running rings (4, 5),
b) that a reed (3) for assorting the warp threads (9) is provided between the running rings (4, 5),
c) thatthe bands (12, 12', 25, 25') of the harness are designed to be flexible over their entire length and directly carry the thread eyes (16),
d) that the upper deflection pulleys (13) for the flexible bands (12, 12', 25, 25') are at the height of the upper running ring (4),
e) that the distance between the upper and lower running rings (4, 5) as well as the maximum distance between the thread eyes (16, 16') at the deflected flexible band (12, 12', 25, 25') or cord are dimensioned such that the shedding angle is sufficiently large to prevent a contact of the warp threads (9) with the shuttle (6).
2. A circular loom according to claim 1, characterised in that the flexible band (12', 25') is guided about an upper deflection pulley (13) only and on one end (27, 29) opposite the catch element (11) is fastened to the stationary machine frame (1) by means of a tension spring (28, 30) (Figs. 3 and 9 to 12).
3. A circular loom according to claim 1, characterised in that the flexible band (12, 25) is formed into an endless loop, running about two deflection pulleys (13, 14) (Figs. 1 and 5 to 8).
4. A circular loom according to claims 1 to 3, characterised in that a plurality of flexible bands (12, 12') or cords are connected with a catch element (11).
5. A circular loom according to claims 1 to 4, characterised in that the running rings (4, 5) have approximately semicircularly arc-shaped profiles and the running rollers (7) of the shuttle (6) are provided with corresponding, approximately quarter- circularly arc-shaped counter profiles, the counter profile extending beyond the vertex of the running ring profile.
6. A circular loom according to claims 1 to 5, characterised in that the tensioning means (32) for the warp threads (9) are designed as leaf springs, which are stationarily fastened to the machine frame
(1) with one end and each carry an eye (34) receiving the warp thread (9) on the other, movable, end, the movable part being movable between stops (35, 36) indicating and controlling a warp thread rupture or a warp thread over-tensioning.
EP82890139A 1981-11-25 1982-09-30 Circular loom Expired EP0080453B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT5064/81 1981-11-25
AT0506481A AT371846B (en) 1981-11-25 1981-11-25 ROUND WEAVING MACHINE

Publications (3)

Publication Number Publication Date
EP0080453A2 EP0080453A2 (en) 1983-06-01
EP0080453A3 EP0080453A3 (en) 1984-05-16
EP0080453B1 true EP0080453B1 (en) 1986-01-29

Family

ID=3571503

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EP82890139A Expired EP0080453B1 (en) 1981-11-25 1982-09-30 Circular loom

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US (1) US4479517A (en)
EP (1) EP0080453B1 (en)
AT (1) AT371846B (en)
BR (1) BR8206797A (en)
CA (1) CA1181661A (en)
DE (1) DE3268850D1 (en)
ES (1) ES8401156A1 (en)
IN (1) IN158561B (en)
PT (1) PT75895B (en)

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Publication number Priority date Publication date Assignee Title
AT375410B (en) * 1982-11-11 1984-08-10 Chemiefaser Lenzing Ag ROUND WEAVING MACHINE
CH660758A5 (en) * 1983-03-16 1987-06-15 Huemer Franz Xaver DEVICE FOR REGULATING THE TENSION AND FOR MONITORING THE CHAIN THREADS ON A ROTARY WEAVING MACHINE.
CH660042A5 (en) * 1983-07-20 1987-03-13 Huemer Franz Xaver ROUND WEAVING MACHINE.
AT383834B (en) * 1985-10-10 1987-08-25 Chemiefaser Lenzing Ag METHOD FOR PRODUCING A TUBE TUBE AND ROUND WOVENING MACHINE FOR CARRYING OUT THE METHOD
DE3724358A1 (en) * 1987-07-23 1989-02-09 Dornier Gmbh Lindauer DEVICE FOR COMPENSATING CHAIN THREAD TENSION VARIATIONS IN SPECIALIZING IN MULTI-SYSTEM FLAT WAVING MACHINES
AT389528B (en) * 1987-08-20 1989-12-27 Chemiefaser Lenzing Ag Heald-frame belt segment
US5293906A (en) * 1989-12-18 1994-03-15 Quadrax Corporation Circular loom for and method of weaving ribbon-shaped weft
AT394866B (en) * 1990-10-29 1992-07-10 Chemiefaser Lenzing Ag Circular weaving machine
DE4400368A1 (en) * 1994-01-10 1995-07-13 Kaendler Maschinenbau Gmbh Shuttle for a circular loom
AT400851B (en) * 1994-02-28 1996-04-25 Lin Yao Chang Circular weaving machine
DE19815821C1 (en) * 1998-04-08 1999-12-02 Mayer Malimo Textilmaschf Drive device for the partial shafts of circular looms
CN1939683B (en) * 2006-10-08 2012-04-25 黄美昌 Double-effective plastic loom
KR100985574B1 (en) 2008-02-15 2010-10-05 김상운 Circular loom
CN102094281A (en) * 2011-03-05 2011-06-15 黄美昌 Concave shuttle wheel and double conical surface orbit structure of circular weaving machine
CN102978787A (en) * 2011-09-03 2013-03-20 黄美昌 Double-weave circular weaving machine of double-layer and double-conical-face running track
EP2829645B1 (en) * 2013-07-24 2018-09-05 Starlinger & Co Gesellschaft m.b.H. Circular looms
CN109072505B (en) 2016-05-04 2021-02-26 因诺泰克轻量化工程与聚合物技术有限公司 Circular weaving machine and method for producing hollow-profile fabrics
CN108560117B (en) * 2018-05-04 2020-07-07 吴劲松 Heald belt assembly and circular weaving machine
US11155941B2 (en) * 2019-07-24 2021-10-26 Innotec Lightweight Engineering & Polymer Technology Gmbh Circular loom with orbit path

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US1426641A (en) * 1918-07-17 1922-08-22 Tubular Woven Fabric Company Circular loom
FR628795A (en) * 1926-04-23 1927-10-28 Loom for weaving tubular fabrics
FR615015A (en) * 1926-04-24 1926-12-28 Improvements in circular looms
GB374562A (en) * 1931-04-08 1932-06-16 Weaving Machines Company Ltd Improvements in or relating to circular looms
FR840559A (en) * 1938-06-15 1939-04-27 Staubli Geb & Co Device for causing the advance and retardation of movement of blades in step looms
DE805026C (en) * 1945-06-13 1951-05-04 Comptoir Linier Sa Electric circular loom
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AU522485B2 (en) * 1978-11-29 1982-06-10 Torii Winding Machine Co. Ltd. Shuttle for circular loom

Also Published As

Publication number Publication date
EP0080453A2 (en) 1983-06-01
CA1181661A (en) 1985-01-29
ES517656A0 (en) 1983-11-16
DE3268850D1 (en) 1986-03-13
BR8206797A (en) 1983-10-04
PT75895A (en) 1982-12-01
US4479517A (en) 1984-10-30
ES8401156A1 (en) 1983-11-16
AT371846B (en) 1983-08-10
ATA506481A (en) 1982-12-15
EP0080453A3 (en) 1984-05-16
IN158561B (en) 1986-12-13
PT75895B (en) 1985-12-09

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