EP0909846B1 - Process and device for presenting the warp yarn ends of a woven band - Google Patents

Process and device for presenting the warp yarn ends of a woven band Download PDF

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Publication number
EP0909846B1
EP0909846B1 EP19980890292 EP98890292A EP0909846B1 EP 0909846 B1 EP0909846 B1 EP 0909846B1 EP 19980890292 EP19980890292 EP 19980890292 EP 98890292 A EP98890292 A EP 98890292A EP 0909846 B1 EP0909846 B1 EP 0909846B1
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EP
European Patent Office
Prior art keywords
warp thread
thread ends
weft threads
weft
warp
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EP19980890292
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German (de)
French (fr)
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EP0909846A1 (en
Inventor
Christian Preuner
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Wis Engineering & Cokg GmbH
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Wis Engineering & Cokg GmbH
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • D21F1/0054Seams thereof
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms

Definitions

  • the invention relates to a method for providing the warp thread ends a fabric tape, of which the weft threads in the area of the warp thread ends with the exception of one that runs at a distance from the remaining fabric edge
  • the weft bundle should be pulled off before the warp ends by changing a subject one with the help of the weft threads of the remaining Weft bundle formed auxiliary compartment one after the other according to the weaving order isolated and on the side of the fabric edge from the auxiliary compartment be pulled out.
  • the projecting ends of the fabric in the longitudinal direction of the fabric tape running warp threads as auxiliary weft threads of both sides woven into auxiliary warp threads, which in the direction of the weft threads of the Fabric tape between the two fabric edges to be joined are provided.
  • the auxiliary weft threads are woven in via a Specialist training facility for the auxiliary warp threads according to the weaving regulations is controlled. So that the warp thread protruding beyond the fabric edge gripped by grippers and by the respective formed by the auxiliary warp threads Can be pulled through, the warp thread ends must be corresponding of the weaving order are separated one after the other.
  • the separator consists of a blow nozzle, whose blowing air flow detects the individual warp thread ends and one Takeover rapier feeds the isolated warp thread end pneumatically holds and from the formed by the weft threads of the magazine
  • Auxiliary compartment pulls out around the warp thread end provided in this way to a pull-through gripper for weaving into the auxiliary warp threads between the Hand over the seams to be formed.
  • the warp thread ends for the one to be formed between the fabric edges
  • the magazine band is made by hand must again to a strip of fabric in the amount of two to three repeats to be obtained, in one of the seam width between the to be connected Distance from the respective fabric edge.
  • the invention is therefore based on the object of a method of the beginning Describe the type described so that the elaborate handicraft to manufacture of the magazine association can be omitted.
  • the invention solves this problem in that first of all Free weft threads, at least approximately parallel to each other End sections of the warp thread ends are connected to one another by an adhesive seam and that then one after the other according to the weaving order Warp ends mechanically from those through the wefts of the weft bundle warp thread ends still kept in the weaving order and be kept apart before the individual warp ends of the adhesive seam is cut off and pulled out of the auxiliary compartment.
  • the warp thread ends cannot match a magazine band kept in the weaving order of the fabric tape, but at least as far aligned that a separation by a specialist training with few, only possible wefts necessary for adhering to the weaving order becomes.
  • the wefts provided to form an auxiliary compartment therefore have just the task, the warp thread end released when changing the subject mechanically separate from the warp thread end following in the weaving order, without taking the subsequent warp end, which is particularly important in Range of the weft thread that is possible before the change of subject to Release of the warp thread end to be separated this warp thread end in the Weaving order holds because after the change of subject this weft thread is the following Warp thread end in the weaving order.
  • the wefts in the area the warp thread ends therefore do not have the task of securing the weaving order but to keep the warp thread ends in a certain orientation so that with these weft threads do not have to be formed a fabric strip. It is sufficient rather, pull these few weft threads from the fabric edge and with lateral distance from each other and to the side of the fabric side by side, which does not involve any particular workload because there is no fabric must be formed.
  • the individual warp thread ends must be cut off from the glued seam and be pulled out of the auxiliary subject. Because the isolated warp ends of the warp thread ends still kept in the weaving order after the mechanical Separation is kept at a distance, cutting off the offers no problems at individual ends of the warp thread.
  • a device which consists of a shed formation facility for a with a lateral distance from the fabric edge, the warp thread ends in weft bundle adhering to the weaving order, from a separating device to separate the one by one according to the weaving order Change of subject of warp thread end approved and from a takeover gripper for those separated by means of the separating device Warp ends.
  • the separating device can advantageously between the thread drivers arranged, adjustable in the direction of the weft threads as well as separating wedges that, like the thread carriers, individually controllable and between those released by the specialist training facility and those still kept in the weaving order by the weft threads Warp thread ends are drivable, with the separating device on the side of each other connected end portions of the warp thread ends a cutter for the individual warp thread ends.
  • each warp thread end released by the auxiliary compartment from those still in the The warp ends held in the warp are separated, due to this the individual controllability of both the thread drivers and the separating wedges is possible, first the released warp thread end in the area of that Weft thread, the one to be separated during the previous change of subject Has released the warp thread end and at the same time the subsequent warp thread end locks to subtract from the warp thread ends remaining in the weaving order. At the same time, this will at least in sections from those in the web regulations remaining warp thread ends separate warp thread ends in this Spaced area by a separating wedge that separated between the Warp thread end and the other warp thread ends can be driven.
  • the through the gap caused by a separating wedge between the isolated end of the warp thread and the rest of the warp thread ends allows the neighboring ones to be driven in Separating wedges assigned to weft threads in this gap, which thus starts out gradually from the weft thread releasing the respective warp thread end towards the two sides of the auxiliary compartment through the one after the other Separating wedges expanded so that the isolated from the other warp ends by the separating wedges spaced warp ends on the Cut the side of the adhesive seam from this and on the other side of the Auxiliary compartment pulled out of the auxiliary compartment with the aid of a conventional gripper and turned on a weaving device can be passed on to produce a Connection seam between the fabric edges on both sides warp thread ends woven into an auxiliary chain and serving as auxiliary weft threads is provided.
  • the specialist training facility for producing the for the warp thread separation provided auxiliary compartment can the weft threads in a conventional manner in eyelets take up.
  • the shedding device parallel guide tubes for the weft threads, so that the isolated end of the warp thread is unimpeded through the weft threads between the guide tubes from the remaining ones Warp thread ends can be deducted, and with small travel for the guide tubes.
  • the thread carriers are different for the warp thread ends to be separated can be trained, there are particularly simple design relationships, when the thread drivers out against the warp thread ends protruding brush bristles consist of in the weft longitudinal direction adjustable straps are provided. About these brush bristles successively released warp thread ends from those in the weaving order held warp thread ends moved away, because of the possible use the brushes only in the area of the one following in the weaving order Warp end of the holding weft and the subsequent separation of the isolated warp thread through the widening one after the other Gap driven separating wedges an undesirable entrainment of one still in the Weaving end held warp thread is simply excluded.
  • Warp ends to ensure the separator can still be in the warp ends held across the warp ends extending guide bracket can be provided, which are kept in the weaving order Guide the warp thread ends between them immediately in front of the cutting device.
  • a Auxiliary chain 7 is provided, in which the warp thread ends projecting beyond the fabric edge 1 3 are woven in as auxiliary weft threads, in a conventional manner Way by shedding the auxiliary chain 7.
  • the end sections 4 of the warp thread ends 3 are sufficient before they are connected by the adhesive seam 5 must be precisely aligned using a brush or comb in order to To keep the warp thread ends 3 in a predetermined orientation is sufficient Binding is not sufficient, the individual warp thread ends 3 in succession to release the web regulations. For this reason, a weft bundle 6 prepare, the wefts 8 drawn off from the fabric edge 1 and in a lateral distance from each other and from the fabric edge 1 become.
  • the number of these weft threads 8 can be used to hold the weaving order required number can be limited. As can be seen from the scheme of Fig. 1 shows, there is a sieve shaft fabric in the embodiment, so that seven weft threads 8 are sufficient to secure the weaving order.
  • the weft threads 8 of the fabric tape 2 prepared in the manner described are drawn into a technical training facility 9, which corresponds to the technical training has up and down movable guide tubes 10. That through the sufach worn 9 conditional auxiliary 11 allows this according to the Weaving order successively releasing the warp thread ends 3.
  • the in the Fig. 2 shown auxiliary compartment 11 gives the foremost according to the weaving order Warp thread end 3a free, but not the warp thread end that follows in the weaving order 3b, so that the foremost warp end 3a of the through the wefts 8 retained warp thread ends 3 can be separated.
  • This Separation takes place initially with the aid of a thread driver 12 in the area of that Weft 8a, the subsequent warp end due to the weaving order 3b between the adjacent weft threads 8b and 8c against entrainment holds.
  • the warp end 3a can therefore over the in the longitudinal direction Weft 8 adjustable, the guide tube 10 for the weft 8a associated thread driver 12 from the warp thread end 3b in the direction of the arrow 13 are deducted to this separation process through a guide tube 10 continue for the weft 8a associated wedge 14, the is driven between the warp thread ends 3a and 3b.
  • the one by driving in The course of the warp thread end 3a of the separating wedge 14 is shown in FIG. 1 indicated by dash-dotted lines.
  • Thread driver 12 in the region of the weft thread 8d can - like the others Thread driver 12 also - advantageously consist of brush bristles 17 on a carrier 18 which is adjustable in the longitudinal direction of the weft threads 8 are.
  • Thread driver 12 also - advantageously consist of brush bristles 17 on a carrier 18 which is adjustable in the longitudinal direction of the weft threads 8 are.
  • the warp thread ends 3 extending guide bracket 20 are assigned to the warp thread ends 3 in the weaving order on the side of the fabric edge 1 between them.

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

Description

Die Erfindung bezieht sich auf ein Verfahren zum Bereitstellen der Kettfadenenden eines Gewebebandes, von dem die Schußfäden im Bereich der Kettfadenenden mit Ausnahme eines mit Abstand vom verbleibenden Geweberand verlaufenden Schußfadenbündels abgezogen werden, bevor die Kettfadenenden durch einen Fachwechsel eines mit Hilfe der Schußfäden des verbliebenen Schußfadenbündels gebildeten Hilfsfaches nacheinander entsprechend der Webordnung vereinzelt und auf der Seite des Geweberandes aus dem Hilfsfach herausgezogen werden.The invention relates to a method for providing the warp thread ends a fabric tape, of which the weft threads in the area of the warp thread ends with the exception of one that runs at a distance from the remaining fabric edge The weft bundle should be pulled off before the warp ends by changing a subject one with the help of the weft threads of the remaining Weft bundle formed auxiliary compartment one after the other according to the weaving order isolated and on the side of the fabric edge from the auxiliary compartment be pulled out.

Um die beiden Enden einer Gewebebahn, beispielsweise zum Herstellen von Entwässerungs- oder Trockensieben für die Papierindustrie, miteinander zu verbinden, werden die über den Geweberand vorragenden Enden der in Längsrichtung des Gewebebandes verlaufenden Kettfäden als Hilfsschußfäden von beiden Seiten in Hilfskettfäden eingewoben, die in Richtung der Schußfäden des Gewebebandes zwischen den beiden zusammenzufügenden Geweberändern vorgesehen sind. Das Einweben der Hilfsschußfäden erfolgt dabei über eine Fachbildungseinrichtung für die Hilfskettfäden, die entsprechend der Webordnung angesteuert wird. Damit die über den Geweberand vorstehenden Kettfadenenden von Greifern erfaßt und durch das jeweils von den Hilfskettfäden gebildete Fach durchgezogen werden können, müssen die Kettfadenenden entsprechend der Webordnung nacheinander vereinzelt werden. Zu diesem Zweck ist es bekannt (US 5 212 858 A), die Kettfadenenden endseitig in einem aus einem Bündel von Schußfäden gebildeten Magazinierbund zu halten, so daß durch die Bildung eines Hilfsfaches mit diesen Schußfäden des Magazinierbundes die einzelnen Ketffadenenden nacheinander entsprechend der Webordnung freigegeben und von den noch im Magazinierbund gehaltenen Kettfadenenden getrennt werden können. Die Trenneinrichtung besteht dabei aus einer Blasdüse, deren Blasluftstrom die jeweils vereinzelten Kettfadenenden erfaßt und einem Übernahmegreifer zuführt, der das vereinzelte Kettfadenende pneumatisch festhält und aus dem durch die Schußfäden des Magazinierbundes gebildeten Hilfsfach auszieht, um das in dieser Art und Weise bereitgestellte Kettfadenende an einen Durchziehgreifer zum Einweben in die Hilfskettfäden der zwischen den Geweberändern zu bildenden Naht zu übergeben. Nachteilig bei dieser Bereitstellung der Kettfadenenden für die zwischen den Geweberändern zu bildende Naht ist vor allem, daß der Magazinierbund von Hand aus hergestellt werden muß, um wieder einen Gewebestreifen im Ausmaß von zwei bis drei Rapporten zu erhalten, und zwar in einem von der Nahtbreite zwischen den zu verbindenden Geweberändern abhängigen Abstand vom jeweiligen Geweberand.Around the two ends of a fabric web, for example for the production of Dewatering or dryer fabrics for the paper industry connect, the projecting ends of the fabric in the longitudinal direction of the fabric tape running warp threads as auxiliary weft threads of both sides woven into auxiliary warp threads, which in the direction of the weft threads of the Fabric tape between the two fabric edges to be joined are provided. The auxiliary weft threads are woven in via a Specialist training facility for the auxiliary warp threads according to the weaving regulations is controlled. So that the warp thread protruding beyond the fabric edge gripped by grippers and by the respective formed by the auxiliary warp threads Can be pulled through, the warp thread ends must be corresponding of the weaving order are separated one after the other. For that purpose it is known (US 5 212 858 A), the warp ends in one end from a Keep bundle of magazines formed magazin bundle, so that by the Formation of an auxiliary compartment with these weft threads of the magazine magazine individual warp thread ends released one after the other according to the weaving order and separated from the warp thread ends still held in the magazine band can be. The separator consists of a blow nozzle, whose blowing air flow detects the individual warp thread ends and one Takeover rapier feeds the isolated warp thread end pneumatically holds and from the formed by the weft threads of the magazine Auxiliary compartment pulls out around the warp thread end provided in this way to a pull-through gripper for weaving into the auxiliary warp threads between the Hand over the seams to be formed. Disadvantageous with this provision the warp thread ends for the one to be formed between the fabric edges The most important thing is that the magazine band is made by hand must again to a strip of fabric in the amount of two to three repeats to be obtained, in one of the seam width between the to be connected Distance from the respective fabric edge.

Der Erfindung liegt somit die Aufgabe zugrunde, ein Verfahren der eingangs geschilderten Art so auszugestalten, daß die aufwendige Handarbeit zur Herstellung des Magazinierbundes entfallen kann.The invention is therefore based on the object of a method of the beginning Describe the type described so that the elaborate handicraft to manufacture of the magazine association can be omitted.

Die Erfindung löst die gestellte Aufgabe dadurch, daß zunächst die von den Schußfäden befreiten, zumindest angenähert parallel zueinander ausgerichteten Endabschnitte der Kettfadenenden miteinander durch eine Klebenaht verbunden werden und daß dann die nacheinander entsprechend der Webordnung vereinzelten Ketffadenenden mechanisch von den durch die Schußfäden des Schußfadenbündels noch in der Webordnung gehaltenen Kettfadenenden getrennt und in Abstand gehalten werden, bevor die jeweils vereinzelten Kettfadenenden von der Klebenaht abgeschnitten und aus dem Hilfsfach gezogen werden.The invention solves this problem in that first of all Free weft threads, at least approximately parallel to each other End sections of the warp thread ends are connected to one another by an adhesive seam and that then one after the other according to the weaving order Warp ends mechanically from those through the wefts of the weft bundle warp thread ends still kept in the weaving order and be kept apart before the individual warp ends of the adhesive seam is cut off and pulled out of the auxiliary compartment.

Durch das Verbinden der Endabschnitte der Kettfadenenden durch eine Klebenaht können zwar die Kettfadenenden nicht entsprechend einem Magazinierbund in der Webordnung des Gewebebandes gehalten, aber zumindest soweit ausgerichtet werden, daß eine Vereinzelung durch eine Fachbildung mit wenigen, lediglich für das Festhalten der Webordnung erforderlichen Schußfäden möglich wird. Die zur Bildung eines Hilfsfaches vorgesehenen Schußfäden haben daher bloß die Aufgabe, das beim Fachwechsel jeweils freigegebene Kettfadenende vom in der Webordnung nachfolgenden Kettfadenende mechanisch zu trennen, ohne das nachfolgende Kettfadenende mitzunehmen, was insbesondere im Bereich jenes Schußfadens einfach möglich ist, der vor dem Fachwechsel zur Freigabe des zu vereinzelnden Kettfadenendes dieses Kettfadenende in der Webordnung hält, weil nach dem Fachwechsel dieser Schußfaden das nachfolgende Kettfadenende in der Webordnung festhält. Die Schußfäden im Bereich der Kettfadenenden haben also die Aufgabe, die Webordnung zu sichern, nicht aber die Kettfadenenden in einer bestimmten Ausrichtung zu halten, so daß mit diesen Schußfäden kein Gewebestreifen gebildet werden muß. Es genügt vielmehr, diese wenigen Schußfäden vom Geweberand abzuziehen und mit seitlichem Abstand voneinander und zum Geweberand nebeneinanderzureihen, was keinen besonderen Arbeitsaufwand mit sich bringt, weil eben kein Gewebe gebildet werden muß. Um die nacheinander vereinzelten Kettenfadenenden aus dem durch das Schußfadenbündel gebildeten Hilfsfach austragen zu können, müssen die jeweils vereinzelten Kettfadenenden von der Klebenaht abgeschnitten und aus dem Hilfsfach gezogen werden. Da die vereinzelten Kettfadenenden von den noch in der Webordnung gehaltenen Kettfadenenden nach der mechanischen Trennung in einem Abstand gehalten werden, bietet das Abschneiden des jeweils vereinzelten Kettfadenendes keine Schwierigkeiten.By connecting the end sections of the warp thread ends with an adhesive seam the warp thread ends cannot match a magazine band kept in the weaving order of the fabric tape, but at least as far aligned that a separation by a specialist training with few, only possible wefts necessary for adhering to the weaving order becomes. The wefts provided to form an auxiliary compartment therefore have just the task, the warp thread end released when changing the subject mechanically separate from the warp thread end following in the weaving order, without taking the subsequent warp end, which is particularly important in Range of the weft thread that is possible before the change of subject to Release of the warp thread end to be separated this warp thread end in the Weaving order holds because after the change of subject this weft thread is the following Warp thread end in the weaving order. The wefts in the area the warp thread ends therefore do not have the task of securing the weaving order but to keep the warp thread ends in a certain orientation so that with these weft threads do not have to be formed a fabric strip. It is sufficient rather, pull these few weft threads from the fabric edge and with lateral distance from each other and to the side of the fabric side by side, which does not involve any particular workload because there is no fabric must be formed. Around the sequentially separated chain thread ends to be able to discharge the auxiliary compartment formed by the weft bundle, the individual warp thread ends must be cut off from the glued seam and be pulled out of the auxiliary subject. Because the isolated warp ends of the warp thread ends still kept in the weaving order after the mechanical Separation is kept at a distance, cutting off the offers no problems at individual ends of the warp thread.

Um die im Bereich Ihrer Endabschnitte durch eine Klebenaht miteinander verbundenen Kettfadenenden eines Gewebebandes einfach vereinzeln zu können, ist eine Vorrichtung erforderlich, die aus einer Fachbildungseinrichtung für ein mit seitlichem Abstand vom Geweberand verlaufendes, die Kettfadenenden in der Webordnung festhaltendes Schußfadenbündel, aus einer Trenneinrichtung zum Vereinzelnen der entsprechend der Webordnung nacheinander durch einen Fachwechsel der Fachbildungseinrichtung freigegebenen Kettfadenenden und aus einem Übernahmegreifer für die mittels der Trenneinrichtung vereinzelten Kettfadenenden besteht. Die Trenneinrichtung kann dabei vorteilhaft zwischen den Schußfäden angeordnete, in Richtung der Schußfäden verstellbare Fadenmitnehmer sowie Trennkeile aufweisen, die wie die Fadenmitnehmer einzeln ansteuerbar und zwischen die jeweils durch die Fachbildungseinrichtung freigegebenen und die noch durch die Schußfäden in der Webordnung gehaltenenen Kettfadenenden treibbar sind, wobei der Trenneinrichtung auf der Seite der miteinander verbundenen Endabschnitte der Ketffadenenden eine Schneideinrichtung für die vereinzelten Kettfadenenden zugeordnet ist. To the area connected to each other by an adhesive seam To be able to easily separate warp thread ends of a fabric tape, a device is required which consists of a shed formation facility for a with a lateral distance from the fabric edge, the warp thread ends in weft bundle adhering to the weaving order, from a separating device to separate the one by one according to the weaving order Change of subject of warp thread end approved and from a takeover gripper for those separated by means of the separating device Warp ends. The separating device can advantageously between the thread drivers arranged, adjustable in the direction of the weft threads as well as separating wedges that, like the thread carriers, individually controllable and between those released by the specialist training facility and those still kept in the weaving order by the weft threads Warp thread ends are drivable, with the separating device on the side of each other connected end portions of the warp thread ends a cutter for the individual warp thread ends.

Durch die in Richtung der Schußfäden verstellbaren Fadenmitnehmer kann das jeweils durch das Hilfsfach freigegebene Kettfadenende von den noch in der Webordnung gehaltenen Kettfadenenden getrennt werden, wobei es aufgrund der Einzelansteuerbarkeit sowohl der Fadenmitnehmer als auch der Trennkeile möglich wird, zunächst das freigegebene Kettfadenende im Bereich jenes Schußfadens, der beim vorhergehenden Fachwechsel das zu vereinzelnde Ketffadenende freigegeben hat und zugleich das nachfolgende Kettfadenende sperrt, von den noch in der Webordnung verbleibenden Kettfadenenden abzuziehen. Zugleich wird das zumindest abschnittsweise von den in der Webordnung verbleibenden Kettfadenenden getrennte Kettfadenende in diesem Bereich durch einen Trennkeil beabstandet gehalten, der zwischen das vereinzelte Kettfadenende und den übrigen Kettfadenenden eintreibbar ist. Der durch den einen Trennkeil bedingte Spalt zwischen dem vereinzelten Kettfadenende und den übrigen Kettfadenenden erlaubt ein Eintreiben der den benachbarten Schußfäden zugeordneten Trennkeile in diesen Spalt, der sich somit ausgehend von dem das jeweilige Kettfadenende freigebenden Schußfaden allmählich gegen die beiden Seiten des Hilfsfaches hin durch die nacheinander eingetriebenen Trennkeile erweitert, so daß das vereinzelte, von den übrigen Kettfadenenden durch die Trennkeile im Abstand gehaltene Kettfadenende auf der Seite der Klebenaht von dieser abgeschnitten und auf der anderen Seite des Hilfsfaches mit Hilfe eines üblichen Greifers aus dem Hilfsfach gezogen und an eine Webeinrichtung weitergegeben werden kann, die zur Herstellung einer Verbindungsnaht zwischen den Geweberändern über die von beiden Seiten her in eine Hilfskette eingewebten, als Hilfsschußfäden dienenden Kettfadenenden vorgesehen ist.Through the adjustable in the direction of the weft thread driver each warp thread end released by the auxiliary compartment from those still in the The warp ends held in the warp are separated, due to this the individual controllability of both the thread drivers and the separating wedges is possible, first the released warp thread end in the area of that Weft thread, the one to be separated during the previous change of subject Has released the warp thread end and at the same time the subsequent warp thread end locks to subtract from the warp thread ends remaining in the weaving order. At the same time, this will at least in sections from those in the web regulations remaining warp thread ends separate warp thread ends in this Spaced area by a separating wedge that separated between the Warp thread end and the other warp thread ends can be driven. The through the gap caused by a separating wedge between the isolated end of the warp thread and the rest of the warp thread ends allows the neighboring ones to be driven in Separating wedges assigned to weft threads in this gap, which thus starts out gradually from the weft thread releasing the respective warp thread end towards the two sides of the auxiliary compartment through the one after the other Separating wedges expanded so that the isolated from the other warp ends by the separating wedges spaced warp ends on the Cut the side of the adhesive seam from this and on the other side of the Auxiliary compartment pulled out of the auxiliary compartment with the aid of a conventional gripper and turned on a weaving device can be passed on to produce a Connection seam between the fabric edges on both sides warp thread ends woven into an auxiliary chain and serving as auxiliary weft threads is provided.

Die Fachbildungseinrichtung zum Herstellen des für die Kettfadenvereinzelung vorgesehenen Hilfsfaches kann die Schußfäden in herkömmlicher Weise in Ösen aufnehmen. Besonders einfache Konstruktionsverhältnisse ergeben sich allerdings, wenn die Fachbildungseinrichtung zueinander parallele Führungsrohre für die Schußfäden aufweist, so daß das vereinzelte Kettfadenende unbehindert durch die Schußfäden zwischen den Führungsrohren von den verbleibenden Kettfadenenden abgezogen werden kann, und zwar bei geringen Stellwegen für die Führungsrohre. The specialist training facility for producing the for the warp thread separation provided auxiliary compartment can the weft threads in a conventional manner in eyelets take up. However, there are particularly simple design relationships, if the shedding device parallel guide tubes for the weft threads, so that the isolated end of the warp thread is unimpeded through the weft threads between the guide tubes from the remaining ones Warp thread ends can be deducted, and with small travel for the guide tubes.

Obwohl die Fadenmitnehmer für die zu vereinzelnden Kettfadenenden unterschiedlich ausgebildet werden können, ergeben sich besonders einfache Konstruktionsverhältnisse, wenn die Fadenmitnehmer aus gegen die Kettfadenenden voragenden Bürstenborsten bestehen, die an in Schußfadenlängsrichtung verstellbaren Trägern vorgesehen sind. Über diese Bürstenborsten werden die nacheinander freigegebenen Kettfadenenden von den in der Webordnung gehaltenen Kettfadenenden wegbewegt, wobei wegen des möglichen Einsatzes der Bürsten lediglich im Bereich eines das in der Webordnung nachfolgende Kettfadenende festhaltenden Schußfadens und der anschließenden Trennung des vereinzelten Kettfadens durch die nacheinander in den sich aufweitenden Spalt eintreibbaren Trennkeile eine unerwünschte Mitnahme eines noch in der Webordnung gehaltenen Kettfadenendes einfach ausgeschlossen wird.Although the thread carriers are different for the warp thread ends to be separated can be trained, there are particularly simple design relationships, when the thread drivers out against the warp thread ends protruding brush bristles consist of in the weft longitudinal direction adjustable straps are provided. About these brush bristles successively released warp thread ends from those in the weaving order held warp thread ends moved away, because of the possible use the brushes only in the area of the one following in the weaving order Warp end of the holding weft and the subsequent separation of the isolated warp thread through the widening one after the other Gap driven separating wedges an undesirable entrainment of one still in the Weaving end held warp thread is simply excluded.

Um eine entsprechende räumliche Zuordnung der in der Webordnung gehaltenen Kettfadenenden zu der Trenneinrichtung sicherzustellen, können für die noch in der Webordnung gehaltenen Kettfadenenden quer zu den Kettfadenenden verlaufende Führungsbügel vorgesehen sein, die die in der Webordnung gehaltenen Kettfadenenden unmittelbar vor der Trenneinrichtung zwischen sich führen.For a corresponding spatial assignment of those held in the web regulations Warp ends to ensure the separator can still be in the warp ends held across the warp ends extending guide bracket can be provided, which are kept in the weaving order Guide the warp thread ends between them immediately in front of the cutting device.

Anhand der Zeichnung wird das erfindungsgemäße Verfahren näher erläutert. Es zeigen

Fig. 1
eine erfindungsgemäße Vorrichtung zum Bereitstellen der Kettfadenenden eines Gewebebandes in einer schematischen Draufsicht,
Fig. 2
diese Vorrichtung in einer zum Teil aufgerissenen Seitenansicht in einem größeren Maßstab und
Fig. 3
einen Schnitt nach der Linie III-III der Fig. 2.
The method according to the invention is explained in more detail with reference to the drawing. Show it
Fig. 1
1 shows a device according to the invention for providing the warp thread ends of a fabric belt in a schematic plan view,
Fig. 2
this device in a partially broken side view on a larger scale and
Fig. 3
a section along the line III-III of FIG. 2nd

Um mit Hilfe der dargestellten Vorrichtung über den Geweberand 1 eines Gewebebandes 2 vorragende Enden 3 der in Längsrichtung des Gewebebandes 2 verlaufenden Kettfäden nacheinander entsprechend der Webordnung vereinzeinen zu können, müssen zunächst die Schußfäden im Bereich der Endabschnitte 4 der Kettfadenenden 3 abgezogen und die von den Schußfäden befreiten Endabschnitte 4 miteinander durch eine Klebenaht 5 verbunden werden, bevor die zwischen der Klebenaht 5 und dem Geweberand 1 verbliebenen Schußfäden mit Ausnahme eines Schußfadenbündels 6 abgezogen werden. Mit Hilfe der über den Geweberand 1 vorragenden Kettfadenenden 3 kann dann nach einer Vereinzelung der Kettfadenenden 3 eine Verbindungsnaht zum Endlosmachen des Gewebebandes 2 hergestellt werden. Zu diesem Zweck wird zwischen den einander gegenüberliegenden Geweberändern 1 eines Gewebebandes 2 eine Hilfskette 7 vorgesehen, in die die über den Geweberand 1 vorragenden Kettfadenenden 3 als Hilfsschußfäden eingewoben werden, und zwar in herkömmlicher Weise durch eine Fachbildung der Hilfskette 7. Obwohl die Endabschnitte 4 der Kettfadenenden 3 vor ihrer Verbindung durch die Klebenaht 5 ausreichend genau mittels einer Bürste oder eines Kammes ausgerichtet werden müssen, um die Kettfadenenden 3 in einer vorgegebenen Ausrichtung zu halten, reicht diese Bindung nicht aus, die einzelnen Ketffadenenden 3 nacheinander entsprechend der Webordnung freizugeben. Aus diesem Grunde ist ein Schußfadenbündel 6 vorzubereiten, dessen Schußfäden 8 vom Geweberand 1 abgezogen und in einem seitlichen Abstand voneinander und vom Geweberand 1 angeordnet werden. Die Anzahl dieser Schußfäden 8 kann auf die zum Festhalten der Webordnung erforderliche Anzahl beschränkt werden. Wie sich aus dem Schema der Fig. 1 ergibt, liegt im Ausführungsbeispiel ein Siebenschaftgewebe vor, so daß sieben Schußfäden 8 zur Sicherung der Webordnung ausreichen.To with the help of the device shown over the fabric edge 1 of a fabric tape 2 protruding ends 3 of the in the longitudinal direction of the fabric tape 2nd Separate running warp threads one after the other according to the weaving order To be able to, the weft threads in the area of the end sections must first 4 of the warp thread ends 3 are pulled off and the weft threads are removed End sections 4 are joined together by an adhesive seam 5 before the weft threads remaining between the adhesive seam 5 and the fabric edge 1 are deducted with the exception of a weft bundle 6. With the help of the warp thread ends 3 protruding from the fabric edge 1 can then be separated the warp thread ends 3 a connecting seam for making the Fabric tape 2 are made. For this purpose, between the mutually opposite fabric edges 1 of a fabric tape 2 a Auxiliary chain 7 is provided, in which the warp thread ends projecting beyond the fabric edge 1 3 are woven in as auxiliary weft threads, in a conventional manner Way by shedding the auxiliary chain 7. Although the end sections 4 of the warp thread ends 3 are sufficient before they are connected by the adhesive seam 5 must be precisely aligned using a brush or comb in order to To keep the warp thread ends 3 in a predetermined orientation is sufficient Binding is not sufficient, the individual warp thread ends 3 in succession to release the web regulations. For this reason, a weft bundle 6 prepare, the wefts 8 drawn off from the fabric edge 1 and in a lateral distance from each other and from the fabric edge 1 become. The number of these weft threads 8 can be used to hold the weaving order required number can be limited. As can be seen from the scheme of Fig. 1 shows, there is a sieve shaft fabric in the embodiment, so that seven weft threads 8 are sufficient to secure the weaving order.

Die Schußfäden 8 des in der geschilderten Art vorbereiteten Gewebebandes 2 werden in eine Fachbildungseinrichtung 9 eingezogen, die zur Fachbildung entsprechend auf- und abbewegbare Führungsrohre 10 besitzt. Das durch die Fachbildungseinrichtung 9 bedingte Hilfsfach 11 erlaubt das entsprechend der Webordnung aufeinanderfolgende Freigeben der Kettfadenenden 3. Das in der Fig. 2 dargestellte Hilfsfach 11 gibt das gemäß der Webordnung vorderste Kettfadenende 3a frei, nicht aber das in der Webordnung nachfolgende Kettfadenende 3b, so daß das vorderste Kettfadenende 3a von den durch die Schußfäden 8 zurückgehaltenen Kettfadenenden 3 getrennt werden kann. Diese Trennung erfolgt zunächst mit Hilfe eines Fadenmitnehmers 12 im Bereich jenes Schußfadens 8a, der aufgrund der Webordnung das nachfolgende Kettfadenende 3b zwischen den benachbarten Schußfäden 8b und 8c gegen eine Mitnahme festhält. Das Kettfadenende 3a kann daher über den in Längsrichtung der Schußfäden 8 verstellbaren, dem Führungsrohr 10 für den Schußfaden 8a zugehörigen Fadenmitnehmer 12 vom Kettfadenende 3b in Richtung des Pfeiles 13 abgezogen werden, um diesen Trennvorgang durch einen ebenfalls dem Führungsrohr 10 für den Schußfaden 8a zugehörigen Trennkeil 14 fortzusetzen, der zwischen die Kettfadenenden 3a und 3b getrieben wird. Der durch das Eintreiben des Trennkeiles 14 bedingte Verlauf des Kettfadenendes 3a ist in der Fig. 1 strichpunktiert angedeutet. Aus dieser Darstellung ist zu entnehmen, daß mit Hilfe der den benachbarten Schußfäden 8b und 8c zugehörigen Trennkeile 14b und 14c der Abstand des Kettfadenendes 3a vom in der Webordnung nachfolgenden Kettfadenende 3b allmählich gegen die beiden Seiten des Hilfsfaches 11 hin vergrößert wird, bis der beim Eingriff aller Trennkeile 14 vorgegebene Verlauf gemäß der strichlierten Linie erreicht ist. In dieser Lage des Kettfadenendes 3a kann der Endabschnitt 4 des Kettfadenendes 3a mit Hilfe einer Schneideinrichtung 15 im Bereich des äußersten Trennkeiles 14 abgeschnitten werden, um das Kettfadenende 3a auf der gegenüberliegenden Seite des Hilfsfaches 11 mit einem bekannten Übernahmegreifer zu erfassen und aus dem Hilfsfach 11 zu ziehen. Nach der Übergabe des aus dem Hilfsfach 11 gezogenen Kettfadenendes 3a an einen Durchziehgreifer für das von der Hilfskette 7 gebildete Webfach kann das Kettfadenende 3a zur Bildung der Verbindungsnaht in die Hilfskette 7 eingewoben werden.The weft threads 8 of the fabric tape 2 prepared in the manner described are drawn into a technical training facility 9, which corresponds to the technical training has up and down movable guide tubes 10. That through the Fachfacheinrichtung 9 conditional auxiliary 11 allows this according to the Weaving order successively releasing the warp thread ends 3. The in the Fig. 2 shown auxiliary compartment 11 gives the foremost according to the weaving order Warp thread end 3a free, but not the warp thread end that follows in the weaving order 3b, so that the foremost warp end 3a of the through the wefts 8 retained warp thread ends 3 can be separated. This Separation takes place initially with the aid of a thread driver 12 in the area of that Weft 8a, the subsequent warp end due to the weaving order 3b between the adjacent weft threads 8b and 8c against entrainment holds. The warp end 3a can therefore over the in the longitudinal direction Weft 8 adjustable, the guide tube 10 for the weft 8a associated thread driver 12 from the warp thread end 3b in the direction of the arrow 13 are deducted to this separation process through a guide tube 10 continue for the weft 8a associated wedge 14, the is driven between the warp thread ends 3a and 3b. The one by driving in The course of the warp thread end 3a of the separating wedge 14 is shown in FIG. 1 indicated by dash-dotted lines. From this representation it can be seen that with Using the wedges 14b associated with the adjacent weft threads 8b and 8c and 14c the distance of the warp thread end 3a from the one following in the weaving order Warp thread end 3b gradually against the two sides of the auxiliary compartment 11 is enlarged until the predetermined course upon engagement of all separating wedges 14 is reached according to the dashed line. In this position of the warp end 3a the end section 4 of the warp thread end 3a with the aid of a cutting device 15 in the area of the outermost separating wedge 14 to be cut off to Warp thread end 3a on the opposite side of the auxiliary compartment 11 to capture a known takeover gripper and from the auxiliary compartment 11 pull. After the transfer of the warp thread end drawn from the auxiliary compartment 11 3a to a pull-through gripper for that formed by the auxiliary chain 7 The shed end 3a can form the connecting seam in the shed Auxiliary chain 7 are woven.

Um für die lediglich schematisch angedeutete Verbindungsnaht 16 das in der Webordnung nachfolgende Kettfadenende 3b als Hilfsschußfaden bereitstellen zu können, muß mit Hilfe der Fachbildungseinrichtung 9 ein Fachwechsel im Bereich der Führungsrohre 10 für die Schußfäden 8a und 8d vorgenommen werden. Danach kann durch den dem Führungsrohr 10 für den Schußfaden 8d zugeordneten Fadenmitnehmer 12 das Kettfadenende 3b vom in der Webordnung nachfolgenden Kettfadenende 3c abgetrennt und mit Hilfe der Trennkeile 14 in Abstand gebracht werden, um nach einem Abschneiden des Kettfadenendes 3b vom durch die Klebenaht 5 gehaltenen Endabschnitt 4 wieder in die Hilfskette 7 einzuweben, und zwar nach einem entsprechenden Fachwechsel. Der Fadenmitnehmer 12 im Bereich des Schußfadens 8d kann - wie die übrigen Fadenmitnehmer 12 auch - vorteilhaft aus Bürstenborsten 17 bestehen, die auf einem in Längsrichtung der Schußfäden 8 verstellbaren Träger 18 angeordnet sind. Mit dem Fortschreiten der Verbindungsnaht 16 in Richtung des Pfeiles 19 ist selbstverständlich die Fadenbildungseinrichtung 9 mit der Trenneinrichtung nachzuziehen.In order for the connecting seam 16, which is only indicated schematically, to be shown in FIG Prepare the following warp thread ends 3b as auxiliary weft threads to be able to change the subject with the help of the specialist training facility 9 Area of the guide tubes 10 made for the weft threads 8a and 8d become. Then can through the guide tube 10 for the weft 8d assigned thread driver 12, the warp thread end 3b from in the weaving order subsequent warp thread end 3c separated and using the separating wedges 14 to be spaced after cutting the warp end 3b from the end section 4 held by the adhesive seam 5 back into the Weave auxiliary chain 7, after a corresponding change of subject. The thread driver 12 in the region of the weft thread 8d can - like the others Thread driver 12 also - advantageously consist of brush bristles 17 on a carrier 18 which is adjustable in the longitudinal direction of the weft threads 8 are. As the connecting seam 16 progresses in the direction of arrow 19 is of course the thread forming device 9 with the separating device follow suit.

Um eine zusätzliche Führung für die Kettfadenenden 3 insbesondere im Bereich eines Übernahmegreifers sicherzustellen, können der Trenneinrichtung quer zu den Kettfadenenden 3 verlaufende Führungsbügel 20 zugeordnet werden, die die in der Webordnung gehaltenen Kettfadenenden 3 auf der Seite des Geweberandes 1 zwischen sich aufnehmen.To provide additional guidance for the warp thread ends 3, particularly in the area ensure a takeover gripper can cross the separator the warp thread ends 3 extending guide bracket 20 are assigned to the warp thread ends 3 in the weaving order on the side of the fabric edge 1 between them.

Claims (6)

  1. A method of preparing the warp thread ends (3) of a woven band (2) from which the weft threads are drawn off in the region of the warp thread ends (3) with the exception of a weft thread bunch (6) extending in spaced relationship from the remaining selvedge (1), before the warp thread ends, (3) are successively separated according to the weave by a change of shed of an auxiliary shed (11) formed by means of the weft threads (8) of the remaining weft thread bunch (6) and are pulled out of the auxiliary shed (11) on the side adjacent the selvedge (1), characterised in that the end portions (4) of the warp thread ends (3) which are freed from the weft threads and which are aligned at least approximately in parallel relationship to one another are first interconnected by an adhesive seam (5) and in that the warp thread ends (3) successively separated in accordance with the weave are then mechanically separated from the warp thread ends (3) still held in the weave by the weft threads (8) of the weft thread bunch (6) and are kept in spaced relationship before the respectively separated warp thread ends (3) are cut off from the adhesive seam (5) and pulled out of the auxiliary shed (11).
  2. A method according to claim 1, characterised in that the weft threads (8) of the weft thread bunch (6) required to form an auxiliary shed (11) are pulled off after removal of the other weft threads from the remaining selvedge and are arranged side by side with lateral spacing from the selvedge (1).
  3. Apparatus for preparing warp thread ends (3) of a woven band (2) freed of weft threads and interconnected in the region of their aligned end portions (4), consisting of a shedding motion for a weft thread bunch extending in laterally spaced relationship from the selvedge and holding the warp thread ends in the weave, a separating device for separating the warp thread ends successively freed in accordance with the weave by a change of shed of the shedding motion, and a take-over gripper for the warp thread ends separated by means of the separating device, characterised in that the separating device comprises thread drivers (12) which are disposed between the weft threads (8) and which are adjustable in the direction of the weft threads (8), and separating wedges (14) which like the thread drivers (12) are individually controllable and between which are respectively drivable the warp thread ends (3) freed by the shedding motion (9) and the warp thread ends still held in the weave by the weft threads (8) and in that the separating device has associated therewith, on the side of the end portions (4) of the warp thread ends (3) interconnected by an adhesive seam (5) a cutting device (15) for the separated warp thread ends (3).
  4. Apparatus according to claim 3, characterised in that the shedding motion (9) comprises parallel guide tubes (10) for the weft threads (8).
  5. Apparatus according to claim 3 or 4, characterised in that the thread drivers (12) consist of brush bristles (17) which project towards the warp thread ends (3) and which are provided on carriers (18) adjustable in the longitudinal direction of the weft threads.
  6. Apparatus according to claims 3 to 5, characterised in that there are associated with the separating device guide stirrups (20) which extend transversely to the warp thread ends (3) and which receive between them on the side belonging to the selvedge (1) the warp thread ends (3) held in the weave.
EP19980890292 1997-10-17 1998-10-13 Process and device for presenting the warp yarn ends of a woven band Expired - Lifetime EP0909846B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT176397 1997-10-17
AT176397A AT405419B (en) 1997-10-17 1997-10-17 METHOD AND DEVICE FOR PROVIDING THE warp-thread ends of a fabric belt
AT1763/97 1997-10-17

Publications (2)

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EP0909846A1 EP0909846A1 (en) 1999-04-21
EP0909846B1 true EP0909846B1 (en) 2003-01-15

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EP19980890292 Expired - Lifetime EP0909846B1 (en) 1997-10-17 1998-10-13 Process and device for presenting the warp yarn ends of a woven band

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AT (1) AT405419B (en)
DE (1) DE59806922D1 (en)

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Publication number Priority date Publication date Assignee Title
US6332049B1 (en) * 2000-01-22 2001-12-18 Global Fia, Inc. Luminescence detector with liquid-core waveguide
CN108049037B (en) * 2018-02-01 2023-08-29 温岭市慧华智能装备有限公司 Automatic fixed-length cloth cutting sewing machine for mattress bag Bian Quan

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027483A (en) * 1990-01-31 1991-07-02 Asten Group, Inc. Apparatus for selectively releasing yarns from a fringe
DE9301722U1 (en) * 1993-02-08 1994-06-09 Novatech Siebe & Tech Seam weaving machine with fringe catcher
DE19505280C2 (en) * 1995-02-16 1998-08-06 Staeubli Gmbh Method and device for the mechanical production of a seam for making a web of fabric endless

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AT405419B (en) 1999-08-25
DE59806922D1 (en) 2003-02-20
EP0909846A1 (en) 1999-04-21
ATA176397A (en) 1998-12-15

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