EP0468916A1 - Gripper loom with guiding blades for the grippers - Google Patents

Gripper loom with guiding blades for the grippers Download PDF

Info

Publication number
EP0468916A1
EP0468916A1 EP91810502A EP91810502A EP0468916A1 EP 0468916 A1 EP0468916 A1 EP 0468916A1 EP 91810502 A EP91810502 A EP 91810502A EP 91810502 A EP91810502 A EP 91810502A EP 0468916 A1 EP0468916 A1 EP 0468916A1
Authority
EP
European Patent Office
Prior art keywords
rapier
guide teeth
weaving machine
machine according
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91810502A
Other languages
German (de)
French (fr)
Other versions
EP0468916B1 (en
Inventor
Ursula Rheinganz
Remo D'incau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Itema Switzerland Ltd
Original Assignee
Sulzer AG
Sultex AG
Gebrueder Sulzer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sulzer AG, Sultex AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0468916A1 publication Critical patent/EP0468916A1/en
Application granted granted Critical
Publication of EP0468916B1 publication Critical patent/EP0468916B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/272—Rapier bands

Definitions

  • the invention relates to a rapier weaving machine according to the preamble of claim 1.
  • rapier weaving machines which are in widespread use today, the weft thread is inserted by a rapier and a rapier rapier, whereby a precise transfer of the thread in the middle area of the shed must be ensured.
  • guide teeth With the help of guide teeth, a reliable transfer of the weft thread can be achieved, especially with wide weaving machines.
  • Various forms of guide teeth are already known (see e.g. DE-AS-1 279 565).
  • the disadvantage of the known guide teeth is that the entry belts are guided and that their edges are damaged by the grazing contact.
  • the friction stress exposes fibers that have a very abrasive effect. Damaged entry belts are the cause of many warp thread breaks.
  • Guide teeth can also be advantageous in weaving machines if the weft is inserted only on one side with a rapier and the weft is taken over outside the shed using a stationary device.
  • the guide teeth 20 and 21 in FIG. 1 are fastened to the sley 1 with a fastening element 30. Such guide teeth are attached over the entire width of the sley 1.
  • 2 shows how the gripper runner 10 within the shed, which is formed by the upper warp threads 7a and the lower warp threads 7b, is supported on the one hand by the guide tooth 20 against the reed 2 and on the other hand by the guide tooth 21 in the direction of tissue support 5 or tissue 8.
  • the guide teeth can be arranged uniformly at constant intervals, the two guide teeth 20 and 21 preferably occurring alternately.
  • rapier weaving machines in which the weft thread is transferred from the bringer to the holster rapier, it is advantageous to guide the guide teeth more frequently in the central area of the shed, i.e. with shorter distances to arrange; because the position of the grippers is to be brought under very close control there.
  • FIG 2 a cross section through a bringer gripper head 3 is schematically shown, which is attached to the top of the entry belt 4.
  • the internal components of the gripper head e.g. the thread clamp are indicated by the box 3a.
  • the entry belt 4 is at a greater distance from the lower warp threads 7b and is not directly above them, as is the case in the shed (dash-dotted warp threads 7a ', 7b') in previous rapier weaving machines without guided grippers.
  • the guide teeth 20, 21, a warp support 6 ' is not necessary, whereby the shed geometry can be improved by making the angle f larger than the corresponding angle f' in previous weaving machines.
  • the guide teeth 20, 21 pass between the warp threads 7b of the lower shed.
  • the guide teeth must be suitably shaped so that problems such as warp thread breaks or the warp threads do not get caught.
  • the edges that come into contact with the warp threads must be rounded or beveled.
  • the tips of the guide teeth which can come into grazing contact behind the gripper runner with the flexible, somewhat sagging entry belt, must be shaped in such a way that the sensitive belt edges remain unaffected, so that any contact that occurs is offset somewhat from the inside of the belt.
  • the length of the gripper skids 10 in the belt direction does not have to match the length of the gripper head. It is advantageous if the runner 10 is longer, so that there are always several guide teeth 20, 21 in contact with it.
  • the runner 10 should be as long as possible, namely as long as the space between the driving belt wheel and the sley allow.
  • a long runner means a welcome stiffening of the entry band behind the Gripper head. So that the gripper does not become too massive due to a long runner, it can be designed as a hollow body.
  • the mass of the runner 10 is advantageously chosen such that the common center of gravity with respect to the gripper head 3 and runner 10 comes to lie below the belt level. With the low center of gravity, it is avoided that, as is known for the previous rapier weaving machines, the rapier head is lifted off the sliding support.
  • the guide teeth which are subject to constant frictional stress from the warp threads, must be made of a resistant material, preferably an abrasion-resistant metal alloy. So that no wear occurs on the guide teeth due to the sliding movement of the gripper runner 10, the runner 10 should be made of a softer material, e.g. made of a plastic.
  • the cross-sectional profile of the gripper runner 10 can be convex, as is the case in FIG. 2. Another example is shown in FIG. 3, where the guidance takes place only on the flanks of the runner 10.
  • the elongated shape of the guide teeth 20, 21 is well suited for a low-resistance penetration into the shed.
  • FIG. 3 as well as in the following figures, only the entry belts 4 are shown in addition to the runner 10; the gripper heads are omitted. 4 shows an embodiment in which the sliding surfaces of the guide teeth 20, 21 are crescent-shaped.
  • the complementary shape of the skid profile makes it impossible - in the event that the center of gravity lies above the belt level - to lift the gripper from the sliding support.
  • Another possibility of suppressing the lifting of the gripper is also as follows: permanent magnets are inserted into the gripper runner 10.
  • the guide teeth 20 are made entirely or partially of a ferromagnetic material. This magnetic lift-off protection is advantageously carried out with the embodiment of FIG. because there it is easy to set up a short distance between the magnets 10 and the guide teeth 20 which are inserted centrally in the runner.
  • FIGS. 5a to 5c show cross sections through gripper runners 10 which have a longitudinal groove in the underside.
  • the longitudinal groove in Fig.5a widens towards the bottom.
  • the guide teeth 20 engaging in the longitudinal groove can all be of the same design. This also applies to the dovetail-shaped longitudinal groove in FIG. 5b.
  • unequal guide teeth 20, 21 can also be used in this case, as shown in FIG. 5c.
  • the longitudinal groove of the gripper runner 10 can of course also have a rectangular one.
  • Guiding outside the shed can be done using a rail several centimeters long.
  • the cross-sectional profile of such a guide rail 25 with a corresponding cross-sectional profile of the gripper runner 10 is shown as an exemplary embodiment. Guiding within the shed can be carried out by teeth 20 as shown in FIG. With a skid profile as in FIG. 4, it is of course also possible for the same sliding surfaces to be used for the guide rail 25 as for the guide teeth 20, 21.

Landscapes

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

Abstract

The gripper loom with at least one insertion band (4) has guide teeth (20, 21) as a sliding support for the gripper which is equipped with a runner (10) in the head region. So that there is no damage to the band edges, the guide teeth according to the invention are so designed that they form the sliding surface for the gripper runner (10), but ensure that there is no contact with the edges of the guide bands. Because the band edges are protected, this reduces the frequency of the warp-yarn breaks which occur relatively often in hitherto existing gripper looms because of the rubbing of the warp yarns on the insertion band. A guide rail (25) between the band wheel and the shed, like the guide teeth (20, 21), engages only on the gripper runner (10) in a manner protective of the band edges. <IMAGE>

Description

Die Erfindung betrifft eine Greiferwebmaschine gemäss dem Oberbegriff von Anspruch 1.The invention relates to a rapier weaving machine according to the preamble of claim 1.

Bei heute weit verbreiteten Greiferwebmaschinen wird der Schussfaden durch einen Bringer- und einen Holergreifer eingetragen, wobei für eine präzise übergabe des Fadens im mittleren Bereich des Webfachs gesorgt werden muss. Mit der Hilfe von Führungszähnen kann insbesondere auch bei breiten Webmaschinen eine sichere Übergabe des Schussfadens erreicht werden. Es sind schon verschiedene Formen von Führungszähnen bekannt (siehe z.B. DE-AS-1 279 565). Nachteil der bekannten Führungszähne ist, dass die Eintragsbänder geführt werden und dass dabei deren Ränder durch den streifenden Kontakt beschädigt werden. Besonders bei faserverstärkten Kunststoffbändern legt die Reibbeanspruchung Fasern frei, die sehr abrasiv wirken. Beschädigte Eintragsbänder sind Ursache vieler Kettfadenbrüche.In rapier weaving machines, which are in widespread use today, the weft thread is inserted by a rapier and a rapier rapier, whereby a precise transfer of the thread in the middle area of the shed must be ensured. With the help of guide teeth, a reliable transfer of the weft thread can be achieved, especially with wide weaving machines. Various forms of guide teeth are already known (see e.g. DE-AS-1 279 565). The disadvantage of the known guide teeth is that the entry belts are guided and that their edges are damaged by the grazing contact. Especially with fiber-reinforced plastic tapes, the friction stress exposes fibers that have a very abrasive effect. Damaged entry belts are the cause of many warp thread breaks.

Führungszähne können auch bei Webmaschinen vorteilhaft sein, wenn der Schusseintrag nur einseitig mit einem Bringergreifer erfolgt und die übernahme des Schussfadens ausserhalb des Webfachs mittels einer stationären Vorrichtung erfolgt.Guide teeth can also be advantageous in weaving machines if the weft is inserted only on one side with a rapier and the weft is taken over outside the shed using a stationary device.

Es ist Aufgabe der Erfindung, eine Greiferwebmaschine zu schaffen, bei welcher der Greifer mittels Führungszähnen geführt wird, ohne dass durch diese Führung eine Beschädigung des Eintragsbandes an dessen Rändern entsteht. Diese Aufgaben wird erfindungsgemäss durch das Merkmal des Kennzeichens von Anspruch 1 gelöst.It is an object of the invention to provide a rapier weaving machine in which the rapier is guided by means of guide teeth without this guide causing damage to the entry belt at its edges. According to the invention, these objects are achieved by the feature of the characterizing part of claim 1.

In den abhängigen Ansprüchen 2 bis 12 sind verschiedene vorteilhafte Ausführungsformen der erfindungsgemässen Greiferwebmaschine gekennzeichnet.In the dependent claims 2 to 12, various advantageous embodiments of the rapier weaving machine according to the invention are characterized.

Im folgenden wird die Erfindung anhand der Figuren näher erläutert. Es zeigen:

  • Fig.1 einen Ausschnitt aus einer Weblade mit erfindungsgemässen Führungszähnen,
  • Fig.2 einen Querschnitt durch Webfach, Bringerkopf und Weblade mit Führungszähnen wie in Fig.1,
  • Fig.3 bis Fig.5c verschiedene Kufenprofile mit zugehörigen Führungszähnen und
  • Fig.6 Querschnitt durch eine Führungsschiene für eine besondere Ausführungsform der Greiferkufe.
The invention is explained in more detail below with reference to the figures. Show it:
  • 1 shows a detail from a sley with guide teeth according to the invention,
  • 2 shows a cross section through the shed, feeder head and sley with guide teeth as in FIG. 1,
  • Fig.3 to Fig.5c different skid profiles with associated guide teeth and
  • Fig.6 cross section through a guide rail for a special embodiment of the gripper blade.

Die Führungszähne 20 und 21 in Fig.1 sind mit einem Befestigungselement 30 an der Weblade 1 befestigt. Solche Führungszähne sind über die gesamte Breite der Weblade 1 angebracht. In Fig.2 ist dargestellt, wie die Greiferkufe 10 innerhalb des Webfachs, das durch die obern Kettfäden 7a und die untern Kettfäden 7b gebildet wird, einerseits durch den Führungszahn 20 gegen das Riet 2 und andererseits durch den Führungszahn 21 in Richtung Gewebestütze 5 oder Gewebe 8 abgestützt wird.The guide teeth 20 and 21 in FIG. 1 are fastened to the sley 1 with a fastening element 30. Such guide teeth are attached over the entire width of the sley 1. 2 shows how the gripper runner 10 within the shed, which is formed by the upper warp threads 7a and the lower warp threads 7b, is supported on the one hand by the guide tooth 20 against the reed 2 and on the other hand by the guide tooth 21 in the direction of tissue support 5 or tissue 8.

Die Führungszähne können gleichmässig mit konstanten Abständen angeordnet sein, wobei die beiden Führungszähne 20 und 21 bevorzugt alternierend auftreten. Bei Greiferwebmaschinen, bei denen die Schussfadenübergabe von Bringer- zu Holergreifer erfolgt, ist es vorteilhaft, im mittleren Bereich des Webfachs die Führungszähne gehäufter, d.h. mit geringeren Abständen, anzuordnen; denn dort soll die Lage der Greifer besonders genau unter Kontrolle gebracht werden.The guide teeth can be arranged uniformly at constant intervals, the two guide teeth 20 and 21 preferably occurring alternately. In rapier weaving machines, in which the weft thread is transferred from the bringer to the holster rapier, it is advantageous to guide the guide teeth more frequently in the central area of the shed, i.e. with shorter distances to arrange; because the position of the grippers is to be brought under very close control there.

In Fig.2 ist schematisch ein Querschnitt durch einen Bringergreiferkopf 3 dargestellt, der an der Oberseite des Eintragsbandes 4 angebracht ist. Die innern Komponenten des Greiferkopfs, z.B. die Fadenklemme, sind mit dem Kästchen 3a angedeutet. Dank der Greiferkufe 10 weist das Eintragsband 4 einen grössern Abstand von den untern Kettfäden 7b auf und befindet sich nicht unmittelbar über ihnen, wie dies im Webfach (strichpunktiert gezeichnete Kettfäden 7a′, 7b′) bei bisherigen Greiferwebmaschinenohne geführte Greifer - der Fall ist. Dank der Führungszähne 20, 21 ist eine Kettfadenstütze 6′ nicht nötig, wodurch sich die Webfachgeometrie verbessern lässt, indem der Winkel f grösser als der entsprechende Winkel f′ bei den bisherigen Webmaschinen gewählt werden kann.In Figure 2, a cross section through a bringer gripper head 3 is schematically shown, which is attached to the top of the entry belt 4. The internal components of the gripper head, e.g. the thread clamp are indicated by the box 3a. Thanks to the gripper runner 10, the entry belt 4 is at a greater distance from the lower warp threads 7b and is not directly above them, as is the case in the shed (dash-dotted warp threads 7a ', 7b') in previous rapier weaving machines without guided grippers. Thanks to the guide teeth 20, 21, a warp support 6 'is not necessary, whereby the shed geometry can be improved by making the angle f larger than the corresponding angle f' in previous weaving machines.

Da bei schnelllaufenden Webmaschinen die Fachschliessbewegung schon während der Greiferauszugsbewegung einsetzt, legen sich die untern Kettfäden, falls das Eintragsband 4 keinen Abstand von ihnen hat, an der Bandkante an, was zu beschädigenden Abnutzungserscheinungen am Eintragsband und demzufolge zu vermehrtem Auftreten von Kettfadenbrüchen führt. Dieser Nachteil eines direkten Kontakts zwischen Kettfäden und Bandkanten ist nun bei der erfindungsgemässen Webmaschine entschärft aber noch nicht vollständig behoben. Da jedoch eine Aufrauhung der Bandkanten durch die Führungszähne eliminiert ist, wird bei den verbleibenden Kontakten zwischen Eintragsband und Kettfäden die Häufigkeit der Fadenbrüche beträchtlich reduziert. Damit die Berühung zwischen Kettfäden 7b und Greiferkufe 10 möglichst harmlos ausfällt, muss das Kufenprofil an den exponierten Stellen an der Unterseite gleichmässig abgerundet sein.Since the fastener movement already starts during the gripper pull-out movement in high-speed weaving machines, the lower warp threads, if the entry belt 4 is not at a distance from them, put on the belt edge, which causes damage to wear and tear Entry band and consequently leads to increased occurrence of warp thread breaks. This disadvantage of direct contact between warp threads and belt edges has now been mitigated in the weaving machine according to the invention, but has not yet been completely eliminated. However, since roughening of the belt edges by the guide teeth is eliminated, the frequency of thread breaks is considerably reduced in the remaining contacts between the insertion belt and the warp threads. In order for the contact between warp threads 7b and rapier runner 10 to be as harmless as possible, the runner profile must be rounded off uniformly at the exposed points on the underside.

Beim öffnen des Webfachs treten die Führungszähne 20, 21 zwischen den Kettfäden 7b des Unterfachs durch. Damit dabei Probleme wie Kettfadenbrüche oder Hängenbleiben der Kettfäden ausbleiben, müssen die Führungszähne geeignet geformt sein. Insbesondere müssen die Kanten, die mit den Kettfäden in Berührung treten, abgerundet oder angeschrägt sein. Die Spitzen der Führungszähne, die hinter der Greiferkufe mit dem flexiblen, etwas durchhängenden Eintragsband in streifenden Kontakt treten können, müssen solcherart geformt sein, dass die empfindlichen Bandkanten unberührt bleiben, dass also die allenfalls auftretende Berührung etwas zum Bandinnern hin versetzt ist.When the shed is opened, the guide teeth 20, 21 pass between the warp threads 7b of the lower shed. The guide teeth must be suitably shaped so that problems such as warp thread breaks or the warp threads do not get caught. In particular, the edges that come into contact with the warp threads must be rounded or beveled. The tips of the guide teeth, which can come into grazing contact behind the gripper runner with the flexible, somewhat sagging entry belt, must be shaped in such a way that the sensitive belt edges remain unaffected, so that any contact that occurs is offset somewhat from the inside of the belt.

Die Länge der Greiferkufe 10 in Bandrichtung muss nicht mit der Länge des Greiferkopfes übereinstimmen. Vorteilhaft ist, wenn die Kufe 10 länger ist, sodass immer mehrere Führungszähne 20, 21 mit ihr in Kontakt sind. Die Kufe 10 soll möglichst lang sein, nämlich so lang, wie es die Platzverhältnisse zwischen dem antreibenden Bandrad und der Weblade zulassen. Eine lange Kufe bedeutet eine willkommene Versteifung des Eintragsbandes hinter dem Greiferkopf. Damit durch eine lange Kufe der Greifer nicht zu massereich wird, kann sie als Hohlkörper ausgebildet werden. Die Masse der Kufe 10 wird mit Vorteil so gewählt, dass der bezüglich Greiferkopf 3 und Kufe 10 gemeinsame Schwerpunkt unterhalb der Bandebene zu liegen kommt. Mit dem tief liegenden Schwerpunkt wird vermieden, dass es, wie es für die bisherigen Greiferwebmaschinen bekannt ist, zu einem Abheben des Greiferkopfs von der Gleitauflage kommt.The length of the gripper skids 10 in the belt direction does not have to match the length of the gripper head. It is advantageous if the runner 10 is longer, so that there are always several guide teeth 20, 21 in contact with it. The runner 10 should be as long as possible, namely as long as the space between the driving belt wheel and the sley allow. A long runner means a welcome stiffening of the entry band behind the Gripper head. So that the gripper does not become too massive due to a long runner, it can be designed as a hollow body. The mass of the runner 10 is advantageously chosen such that the common center of gravity with respect to the gripper head 3 and runner 10 comes to lie below the belt level. With the low center of gravity, it is avoided that, as is known for the previous rapier weaving machines, the rapier head is lifted off the sliding support.

Die Führungszähne, die einer ständigen Reibbeanspruchung durch die Kettfäden ausgesetzt sind, müssen aus einem widerstandsfähigen Material gefertigt werden, vorzugsweise aus einer abriebfesten Metalllegierung. Damit durch die Gleitbewegung der Greiferkufe 10 an den Führungszähnen keine Abnutzung entsteht, soll die Kufe 10 aus einem weichern Material, z.B. aus einem Kunststoff, hergestellt werden.The guide teeth, which are subject to constant frictional stress from the warp threads, must be made of a resistant material, preferably an abrasion-resistant metal alloy. So that no wear occurs on the guide teeth due to the sliding movement of the gripper runner 10, the runner 10 should be made of a softer material, e.g. made of a plastic.

Das Querschnittsprofil der Greiferkufe 10 kann konvex sein, wie dies in Fig.2 der Fall ist. Ein anderes Beispiel zeigt Fig.3, wo die Führung nur an den Flanken der Kufe 10 erfolgt. Die gestreckte Form der Führungszähne 20, 21 eignet sich gut für ein widerstandsarmes Eindringen in das Webfach. In der Fig.3 wie auch in den folgenden Figuren sind neben der Kufe 10 nur die Eintragsbänder 4 dargestellt; die Greiferköpfe sind weggelassen. Fig.4 gibt ein Ausführungsbeispiel, bei dem die Gleitflächen der Führungszähne 20, 21 sichelförmig ausgebildet sind. Die dazu komplementäre Form des Kufenprofils macht - für den Fall, dass der Schwerpunkt über der Bandebene liegt - ein Abheben des Greifers von der Gleitauflage unmöglich.The cross-sectional profile of the gripper runner 10 can be convex, as is the case in FIG. 2. Another example is shown in FIG. 3, where the guidance takes place only on the flanks of the runner 10. The elongated shape of the guide teeth 20, 21 is well suited for a low-resistance penetration into the shed. In FIG. 3 as well as in the following figures, only the entry belts 4 are shown in addition to the runner 10; the gripper heads are omitted. 4 shows an embodiment in which the sliding surfaces of the guide teeth 20, 21 are crescent-shaped. The complementary shape of the skid profile makes it impossible - in the event that the center of gravity lies above the belt level - to lift the gripper from the sliding support.

Ein andere Möglichkeit, das Abheben des Greifers zu unterdrücken, besteht auch in folgendem: In die Greiferkufe 10 legt man Permanentmagnete ein. Die Führungszähne 20 werden aus einem ferromagnetischen Material ganz oder teilweise gefertigt. Diese magnetische Abhebesicherung wird mit Vorteil mit der Ausführungsform der Fig.5a ausgeführt; denn dort ist es einfach, zwischen zentral in der Kufe 10 eingelegten Magneten und Führungszähnen 20 eine geringe Distanz einzurichten.Another possibility of suppressing the lifting of the gripper is also as follows: permanent magnets are inserted into the gripper runner 10. The guide teeth 20 are made entirely or partially of a ferromagnetic material. This magnetic lift-off protection is advantageously carried out with the embodiment of FIG. because there it is easy to set up a short distance between the magnets 10 and the guide teeth 20 which are inserted centrally in the runner.

Die Figuren 5a bis 5c zeigen Querschnitte durch Greiferkufen 10, die eine Längsnut in der Unterseite aufweisen. Die Längsnut in Fig.5a erweitert sich gegen unten. Die in die Längsnut eingreifenden Führungszähne 20 können alle gleich ausgebildet sein. Dies gilt auch für die schwalbenschwanzförmige Längsnut der Fig.5b. Selbstverständlich können auch in diesem Fall ungleiche Führungszähne 20, 21 verwendet werden, wie es in Fig.5c gezeigt ist. Statt eines trapezförmigen Querschnitts kann die Längsnut der Greiferkufe 10 selbstverständlich auch einen rechteckigen aufweisen.FIGS. 5a to 5c show cross sections through gripper runners 10 which have a longitudinal groove in the underside. The longitudinal groove in Fig.5a widens towards the bottom. The guide teeth 20 engaging in the longitudinal groove can all be of the same design. This also applies to the dovetail-shaped longitudinal groove in FIG. 5b. Of course, unequal guide teeth 20, 21 can also be used in this case, as shown in FIG. 5c. Instead of a trapezoidal cross section, the longitudinal groove of the gripper runner 10 can of course also have a rectangular one.

Die Führung ausserhalb des Webfachs kann mittels einer mehrere Zentimeter langen Schiene erfolgen. In Fig.6 ist als Ausführungsbeispiel das Querschnittsprofil einer solchen Führungsschiene 25 mit einem entsprechenden Querschnittsprofil der Greiferkufe 10 dargestellt. Innerhalb des Webfachs kann die Führung durch Zähne 20 wie in Fig.5a erfolgen (stichpunktiert dargestellt). Mit einem Kufenprofil wie in Fig.4 ist es natürlich auch möglich, dass die gleichen Gleitflächen für die Führungsschiene 25 wie auch für die Führungszähne 20, 21 benutzt werden.Guiding outside the shed can be done using a rail several centimeters long. In FIG. 6, the cross-sectional profile of such a guide rail 25 with a corresponding cross-sectional profile of the gripper runner 10 is shown as an exemplary embodiment. Guiding within the shed can be carried out by teeth 20 as shown in FIG. With a skid profile as in FIG. 4, it is of course also possible for the same sliding surfaces to be used for the guide rail 25 as for the guide teeth 20, 21.

Claims (12)

Greiferwebmaschine mit mindestens einem Eintragsband (4) zum Bewegen eines Greiferkopfes (3) und mit Führungszähnen (20, 21) als Gleitauflage für den Greifer,
   dadurch gekennzeichnet, dass der Greifer im Kopfbereich mit einer Kufe (10) ausgestattet ist, deren Querschnittsprofil sich zumindest teilweise formschlüssig an die Gleitfläche der Führungszähne (20, 21) anlegt, und dass zwischen den Rändern des Eintragsbandes (4) und den Führungszähnen (20, 21) kein Kontakt besteht.Rapier weaving machine with at least one entry belt (4) for moving a rapier head (3) and with guide teeth (20, 21) as a sliding support for the rapier,
characterized in that the gripper is equipped in the head region with a runner (10), the cross-sectional profile of which lies at least partially positively on the sliding surface of the guide teeth (20, 21), and that between the edges of the entry belt (4) and the guide teeth (20 , 21) there is no contact. Greiferwebmaschine nach Anspruch 1 mit konvexem Kufenprofil.Rapier weaving machine according to claim 1 with a convex skid profile. Greiferwebmaschine nach Anspruch 1 oder 2 mit sichelförmigen Gleitflächen der Führungszähne (20, 21), die ein Abheben des Greifers von der Gleitauflage verhindern.Gripper weaving machine according to claim 1 or 2 with crescent-shaped sliding surfaces of the guide teeth (20, 21), which prevent the gripper from lifting off the sliding support. Greiferwebmaschine nach einem der Ansprüche 1 bis 3 mit ungleichen Führungszähnen (20, 21), wobei die einen Führungszähne (20) die Greiferkufe (10) rietseitig und die andern (21) gewebeseitig abstützen.Rapier weaving machine according to one of claims 1 to 3 with unequal guide teeth (20, 21), one guide tooth (20) supporting the rapier skid (10) on the rivet side and the other (21) on the fabric side. Greiferwebmaschine nach Anspruch 1 mit einer Längsnut in der Unterseite der Greiferkufe (10), in welche die Führungszähne (20) eingreifen.Rapier weaving machine according to claim 1 with a longitudinal groove in the underside of the rapier runner (10) into which the guide teeth (20) engage. Greiferwebmaschine nach Anspruch 5 mit Führungszähnen (20), die schwalbenschwanzartig in die Längsnut der Greiferkufe (10) eingreifen.Rapier weaving machine according to claim 5 with guide teeth (20) which engage like a dovetail in the longitudinal groove of the rapier runner (10). Greiferwebmaschine nach einem der Ansprüche 1 bis 6 mit Führungsschiene (25), die sich ausserhalb des Webfachs befindet und dort die Greiferkufe (10) führt, wobei zwischen den Rändern des Eintragsbandes (4) und der Führungsschiene (25) kein Kontakt besteht.Rapier weaving machine according to one of claims 1 to 6 with guide rail (25) which is located outside the shed and there guides the rapier runners (10), there being no contact between the edges of the entry belt (4) and the guide rail (25). Greiferwebmaschine nach einem der Ansprüche 1 bis 7 mit ferromagnetischen Führungszähnen und Permanentmagneten in der Greiferkufe (10).Rapier weaving machine according to one of claims 1 to 7 with ferromagnetic guide teeth and permanent magnets in the rapier blade (10). Greiferwebmaschine nach einem der Ansprüche 1 bis 8 mit Eintragsbändern für einen Bringer- und einen Holergreifer.Rapier weaving machine according to one of claims 1 to 8 with entry belts for a rapier and a rapier. Greiferwebmaschine nach Anspruch 9 mit einer Anordnung der Führungszähne (20,21), die im mittleren Bereich des Webfachs eine dichtere Verteilung als am Rand aufweist.Rapier weaving machine according to claim 9 with an arrangement of the guide teeth (20, 21) which has a denser distribution in the central region of the shed than at the edge. Greiferwebmaschine nach einem der Ansprüche 1 bis 10 mit Führungszähnen (20, 21), die aus einem abriebfesteren Material als die Greiferkufen (10) gefertigt sind.Rapier weaving machine according to one of claims 1 to 10 with guide teeth (20, 21) which are made of a more abrasion-resistant material than the rapier runners (10). Greiferwebmaschine nach Anspruch 11 mit metallischen Führungszähnen (20, 21) und Greiferkufen (10) aus Kunststoff.Rapier weaving machine according to claim 11 with metallic guide teeth (20, 21) and rapier runners (10) made of plastic.
EP91810502A 1990-07-24 1991-06-26 Gripper loom with guiding blades for the grippers Expired - Lifetime EP0468916B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2447/90 1990-07-24
CH244790 1990-07-24

Publications (2)

Publication Number Publication Date
EP0468916A1 true EP0468916A1 (en) 1992-01-29
EP0468916B1 EP0468916B1 (en) 1996-01-03

Family

ID=4234041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810502A Expired - Lifetime EP0468916B1 (en) 1990-07-24 1991-06-26 Gripper loom with guiding blades for the grippers

Country Status (3)

Country Link
US (1) US5176185A (en)
EP (1) EP0468916B1 (en)
DE (1) DE59107193D1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0573727A1 (en) * 1992-06-12 1993-12-15 Sulzer RàœTi Ag Gripper loom
EP0684328A1 (en) * 1994-05-27 1995-11-29 NUOVO PIGNONE S.p.A. Improved guide system for the gripper insertion tape in a shuttleless loom
EP0715009A1 (en) * 1994-11-30 1996-06-05 NUOVA VAMATEX S.p.A. Means to guide the motion of a pair of weft grippers along the shed of looms
WO1998038366A1 (en) * 1997-02-24 1998-09-03 Picanol N.V. Rapier loom
DE10346224A1 (en) * 2003-09-23 2005-04-14 Picanol N.V. Rapier tape for rapier loom is of rectangular section with an open grove at side to accommodate guides on its internal surfaces
DE10346225A1 (en) * 2003-09-23 2005-05-19 Picanol N.V. Guide element for a rapier band
EP2128317A1 (en) 2008-05-28 2009-12-02 ITEMA (Switzerland) Ltd. Method and device for inserting weft thread in a gripper loom

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0557723B1 (en) * 1992-02-28 1997-05-21 Lindauer Dornier Gesellschaft M.B.H Inserting tapes or rods guiding device for looms
DE9413172U1 (en) * 1994-08-16 1994-10-13 Textilma Ag, Hergiswil Rapier weaving machine
GB2314095B (en) * 1996-06-14 2000-05-17 Griffith Textile Mach Ltd Gripper type loom
JP4595187B2 (en) * 2000-10-12 2010-12-08 株式会社豊田自動織機 Weft insertion device in rapier loom
EP1394302B1 (en) * 2002-08-30 2007-06-20 Promatech S.p.A. Improvements in weft carrying grippers for weaving looms and in weaving looms with guiding means thereof
BE1028436B1 (en) * 2020-06-25 2022-01-31 Vandewiele Nv GUIDE DEVICE IN A GRIPPER LOAVY MACHINE, GRIPPER LOAVY MACHINE AND PROCEDURE FOR REFORMING A GRIPPER LOAVING MACHINE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR48801E (en) * 1936-11-21 1938-07-12 Needle Loom Improvements
BE681542A (en) * 1965-04-06 1966-10-31
FR2270356A1 (en) * 1972-03-04 1975-12-05 Desveus Duran Magin
DE2643626A1 (en) * 1975-10-01 1977-04-07 Rueti Ag Maschf WEAVING MACHINE WITH A FLEXIBLE LIFTING TAPE
FR2552455A1 (en) * 1983-09-27 1985-03-29 Textima Veb K WEFT THREAD INSERTION DEVICE
DE3519685C1 (en) * 1985-06-01 1986-08-28 Lindauer Dornier Gmbh, 8990 Lindau Fastening device for interchangeably arranged guiding bodies on non-contact looms
EP0285001A2 (en) * 1987-04-03 1988-10-05 Textilma AG Gripper loom
EP0357974A1 (en) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Means to guide the motion of weft grippers inside the shed of shuttleless looms

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011134B2 (en) * 1979-05-02 1985-03-23 株式会社豊田中央研究所 Flexible type rapier loom
IT1171737B (en) * 1983-10-10 1987-06-10 Vamatex Spa HOOK FOR GUIDING OF CLAMP-HOLDER TAPES INSIDE THE PITCH OF WEAVING FRAMES AND GUIDE COMPLEX WITH IT REALIZABLE
EP0199881B1 (en) * 1985-05-03 1988-01-20 GebràœDer Sulzer Aktiengesellschaft Weft insertion device for a gripper shuttle loom
IT1184559B (en) * 1985-06-04 1987-10-28 Vamatex Spa MEANS TO GUIDE THE WEFT-HOLDER PLIERS AND THE BELTS THAT COMMAND THEM INSIDE THE PITCH OF WEAVING FRAMES WITH PLIERS
IT1198246B (en) * 1986-12-23 1988-12-21 Vamatex Spa MEANS TO GUIDE THE MOTORCYCLE OF A COUPLE OF PLATE HOLDER CLAMPS INSIDE THE WHEEL WEAVING PITCH

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR48801E (en) * 1936-11-21 1938-07-12 Needle Loom Improvements
BE681542A (en) * 1965-04-06 1966-10-31
FR2270356A1 (en) * 1972-03-04 1975-12-05 Desveus Duran Magin
DE2643626A1 (en) * 1975-10-01 1977-04-07 Rueti Ag Maschf WEAVING MACHINE WITH A FLEXIBLE LIFTING TAPE
FR2552455A1 (en) * 1983-09-27 1985-03-29 Textima Veb K WEFT THREAD INSERTION DEVICE
DE3519685C1 (en) * 1985-06-01 1986-08-28 Lindauer Dornier Gmbh, 8990 Lindau Fastening device for interchangeably arranged guiding bodies on non-contact looms
EP0285001A2 (en) * 1987-04-03 1988-10-05 Textilma AG Gripper loom
EP0357974A1 (en) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Means to guide the motion of weft grippers inside the shed of shuttleless looms

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0573727A1 (en) * 1992-06-12 1993-12-15 Sulzer RàœTi Ag Gripper loom
US5345977A (en) * 1992-06-12 1994-09-13 Sulzer Rueti Ag Gripper loom having warp thread bearer members
EP0684328A1 (en) * 1994-05-27 1995-11-29 NUOVO PIGNONE S.p.A. Improved guide system for the gripper insertion tape in a shuttleless loom
US5615714A (en) * 1994-05-27 1997-04-01 Nuovo Pignone S.P.A. Guide system for the gripper insertion tape in a shuttleless loom
EP0715009A1 (en) * 1994-11-30 1996-06-05 NUOVA VAMATEX S.p.A. Means to guide the motion of a pair of weft grippers along the shed of looms
WO1998038366A1 (en) * 1997-02-24 1998-09-03 Picanol N.V. Rapier loom
BE1010943A3 (en) * 1997-02-24 1999-03-02 Picanol Nv Rapier WITH SOME GUIDANCE RESOURCES.
DE10346224A1 (en) * 2003-09-23 2005-04-14 Picanol N.V. Rapier tape for rapier loom is of rectangular section with an open grove at side to accommodate guides on its internal surfaces
DE10346225A1 (en) * 2003-09-23 2005-05-19 Picanol N.V. Guide element for a rapier band
EP2128317A1 (en) 2008-05-28 2009-12-02 ITEMA (Switzerland) Ltd. Method and device for inserting weft thread in a gripper loom

Also Published As

Publication number Publication date
US5176185A (en) 1993-01-05
DE59107193D1 (en) 1996-02-15
EP0468916B1 (en) 1996-01-03

Similar Documents

Publication Publication Date Title
EP0468916B1 (en) Gripper loom with guiding blades for the grippers
DD269408A5 (en) GUIDE FOR MOVING A GRIPPER SHOULDERS WITHIN THE WEBFACHES OF A WEBSTUHLES
CH635625A5 (en) PROTECTIVE WEAVING MACHINE FOR THE PRODUCTION OF FABRICS WITH PATTERN REPORT.
DE68916602T2 (en) Device for controlling the movement of the weft insertion grippers in the compartment of defenseless weaving machines.
EP0441099B1 (en) Weft carrying gripper for gripper looms
EP0620303A1 (en) Gripper loom
EP0972099B1 (en) Gripper weaving machine
EP0906461B1 (en) Transfer gripper for a rapier loom
EP0576854B1 (en) Gripper loom
DE69514998T2 (en) Device for guiding the movement of a pair of grippers through the shed of weaving machines
EP2372001B1 (en) Guide element for a gripper transport element of a loom
EP0233141B1 (en) Needle loom
DE2330117A1 (en) SHUTELESS LOOM WITH A WEFT GRIPPER GUIDE
EP0446561A1 (en) Shuttleless loom with inserting tapes and spacing elements for the grippers
DE69518113T2 (en) Improved guiding system for the looper entry belt in a defenseless weaving machine
EP0776390B1 (en) Gripper weaving machine
EP0963469B1 (en) Rapier loom
DE69603553T2 (en) Device for the insertion of weft threads on a rapier weaving machine
EP1108080B1 (en) Loom with band-mounted grippers comprising at least one gripper band as well as guiding means
DE1710351C3 (en) Rapier loom
DD243304B1 (en) DEVICE FOR SHEET POSITIONING ON GRIPPER WEAVING MACHINES
DE19602552C2 (en) Method and device for producing a band fabric
DE2325801A1 (en) WEFT GRIPPER FOR LOCKELESS LOOMS
DE1535412C3 (en) Rapier guards and guide lamellas of a weaving machine
DE1248578B (en) Web guards for looms

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR IT

17P Request for examination filed

Effective date: 19920616

17Q First examination report despatched

Effective date: 19940729

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SULZER RUETI AG

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960103

Ref country code: BE

Effective date: 19960103

REF Corresponds to:

Ref document number: 59107193

Country of ref document: DE

Date of ref document: 19960215

ITF It: translation for a ep patent filed
EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050626