EP2059633A1 - Ribbon needle loom - Google Patents

Ribbon needle loom

Info

Publication number
EP2059633A1
EP2059633A1 EP07763934A EP07763934A EP2059633A1 EP 2059633 A1 EP2059633 A1 EP 2059633A1 EP 07763934 A EP07763934 A EP 07763934A EP 07763934 A EP07763934 A EP 07763934A EP 2059633 A1 EP2059633 A1 EP 2059633A1
Authority
EP
European Patent Office
Prior art keywords
weft
needle
spring
loom according
thread
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
EP07763934A
Other languages
German (de)
French (fr)
Other versions
EP2059633B1 (en
Inventor
Philippe Ankli
Stefan Lenzin
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.)
Textilma AG
Original Assignee
Textilma 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 Textilma AG filed Critical Textilma AG
Publication of EP2059633A1 publication Critical patent/EP2059633A1/en
Application granted granted Critical
Publication of EP2059633B1 publication Critical patent/EP2059633B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/205—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B65H59/32—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path the surfaces being urged away from each other
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
    • 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/368—Air chamber storage devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a needle ribbon loom according to the preamble of claim 1.
  • Needle looms of the type mentioned are known in many forms, such as from WO-A-96/19604.
  • the ribbon loom contains a weft insertion needle, which is associated with a weft feeder, the - viewed in the direction of weft - a weft source, a weft brake, a weft conveyor and a pneumatically operated, designed as blowing or suction weft compensating device and before Weft insertion needle has a separate weft thread guide eye.
  • a weft compensating device which is typically formed by a leg spring, as known, for example, from CH-646 397 A5.
  • object of the invention is to improve a needle loom of the type described above.
  • the object is achieved by a needle loom according to claim 1.
  • the measures of the invention result in the provision of a needle loom whose weft supply on the one hand has a high control bandwidth and which therefore permits a high speed, but in which large fluctuations in the weft tension can be avoided, as shown in FIG is.
  • a measured value and a limitation possibility for the weft tension are available, which can be advantageously used during operation of the needle loom.
  • the measured values of the spring device can be used to display or output a warning when the limiting values are exceeded or fallen short of.
  • the spring device is coupled to a drive device of the needle loom. According to claim 4 the drive is interrupted if the limit values of the weft tension are exceeded or exceeded.
  • the spring means comprises a coil spring which is connected to a compensation pin or a plunger on which the guide eye is arranged. It may be advantageous to adjust the delivery rate of the weft conveyor by the position of the compensation pin controllable and to regulate accordingly.
  • the pneumatic weft compensating device according to claim 8 can be used in a further developed form.
  • it has a flow channel bounded by side walls for the passage of an air flow and the reception of a weft thread loop, wherein a plurality of air nozzles are arranged in a relay-like manner one behind the other in at least one side wall in the flow direction of the air flow.
  • the distance between adjacent sidewalls of the flow channel is adjustable.
  • Figure 1 is a diagram of the weft tension during operation of a conventional needle loom with a pneumatically operated, designed as blowing or suction weft compensation device;
  • Figure 2 is a diagram of the weft tension in the operation of an older needle loom with leg spring for weft compensation
  • FIG. 3 shows a diagram of the weft tension during operation of a needle loom in accordance with the present invention
  • Figure 4 is a schematic representation of the weft thread guide when striking a weft thread
  • Figure 5 is a schematic representation of the weft thread guide when entering a weft thread in a shed.
  • FIGS. 4 and 5 shows a schematic illustration of the displaceability of the side walls of the flow channel of the weft compensating device from FIGS. 4 and 5.
  • FIGS. 4 and 5 show essential components of the weft feeder of a needle loom in the schematic representation in the manner of a block diagram in two different operating states of the weft insertion needle.
  • the weft supply shown starts with the shot cone 2, from which the weft thread 4 is withdrawn.
  • the weft thread 4 is then guided by means of two pressure rollers 6 and 6 'on a transport roller 8 and supplied from this to the other components of the weft thread guide.
  • the spring means 12 for measuring and / or limiting the spring force the real heart of the invention, in cooperation with a pneumatically operating weft compensating device 22, which is designed as an air flow device.
  • the spring device 12 comprises a linear spring 14, which is connected on one side via a compensation pin 15 with a guide eye 16 for the weft thread 4. On the other side, the spring 14 is firmly attached to the spring housing.
  • the spring device 12 has two end position sensors 18 and 20, each of which emits a signal when the end position is reached.
  • the end position sensors 18 and 20 are designed as electrical sensors - switches.
  • the end position sensors are designed as optical sensors.
  • the deflection of the spring 14 is very small. The spring therefore primarily effects a change in tension on the weft thread, while in the exemplary embodiment described here the length compensation is effected almost exclusively by the weft-compensating device 22.
  • the compensation pin 15 is horizontally movable by a few centimeters. This coupled with the spring 14 compensation pin 15 is positioned during operation of the loom and shows the weaver in which position which forces exist.
  • the readjustment which can be carried out manually or automatically, for example by means of a control electronics, allows the compensation pin 15 to settle in the most advantageous position.
  • the position of the compensation pin 15 at the very back means too loose thread. In both End positions front and rear, the machine is also stopped in the present embodiment.
  • a position monitoring of the compensation pin 15 is provided over its entire possible path.
  • the number of revolutions of the weaving machine can be easily increased to 3'00O revolutions per minute or more. It should be emphasized that in the embodiment described here the position of the spring 14 remains essentially unchanged due to its inertia during the weaving process. Thus, the spring does not participate in the movement - except in the start / stop phase - but passes on its defined tension in the end positions to the weft thread.
  • the weft thread 4 extends from the spring device 12 further to the weft equalizer 22.
  • the weft equalizer 22 has a flow channel defined by side walls for the passage of an air flow and the reception of a weft thread loop.
  • five air nozzles 24 are arranged like a relay in a side wall in the flow direction of the air flow one behind the other, which provide a uniform tension of the weft thread.
  • the flow channel - made of aluminum in the embodiment described here - can ensure a constant volume of air.
  • a side wall 25 forming the flow channel-made of sheet steel in the exemplary embodiment described here-can, as shown in FIG. 6, be displaced at a distance a 0.3 to 1.8 mm from the opposite side wall 25 '.
  • the weft compensating device 22 can be adjusted to different thread thicknesses and thread qualities, and thus also the tension force exerted on the weft thread.
  • a memory effect is enabled with a constant volume of air.
  • a plastic version of the central air block and the side plate can be provided. This is advantageous in terms of noise reduction, especially with thicker threads.
  • this is supplied in the present embodiment via a guide and Umlenkinate 26 of the weft needle 28, the weft thread 4 with open shed and position of the reed 32 - as shown in Figure 5 - between the warp threads 34 einschiesst.
  • Another advantage is illustrated by the following numerical example. On a machine designed for 50 mm belts, it is readily possible to weave a belt with a width of only 15 mm. Due to the air volume solution, there is always enough thread reserve.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Harvesting Machines For Specific Crops (AREA)
  • Surgical Instruments (AREA)

Abstract

In order firstly to make a high speed possible but also to avoid high peak values of the weft thread tension in the process in a needle loom having a weft-thread compensation device (22) which tensions the weft thread (4), it is proposed to configure the weft-thread compensation device (22) as an air stream device and, furthermore, to use a spring device (12) for measuring and/or for limiting the weft thread tension.

Description

Nadelbandwebmaschine needle loom
Technisches GebietTechnical area
Die Erfindung betrifft eine Nadelbandwebmaschine gemäss dem Oberbegriff von Anspruch 1.The invention relates to a needle ribbon loom according to the preamble of claim 1.
Stand der TechnikState of the art
Nadelbandwebmaschinen der eingangs genannten Art sind in vielfacher Form bekannt, so zum Beispiel aus de WO-A-96/19604. Die Bandwebmaschine enthält eine Schusseintragsnadel, der eine Schussfaden-Zuführvorrichtung zugeordnet ist, die - in Laufrichtung des Schussfadens gesehen - eine Schussfadenquelle, eine Schussfadenbremse, eine Schussfaden-Fördereinrichtung und eine pneumatisch arbeitende, als Blas- bzw. Saugeinrichtung ausgebildete Schussfaden- Ausgleichsvorrichtung sowie vor der Schusseintragsnadel eine separate Schuss- faden-Führungsöse aufweist. Ältere Nadelwebmaschinen weisen dagegen eine Schussfaden-Ausgleichsvorrichtung auf, die typischerweise durch eine Schenkelfeder ausgebildet ist, wie zum Beispiel aus der CH-646 397 A5 bekannt. Während die Nadelbandwebmaschinen mit einer Schenkelfedereinrichtung typischerweise auf niedere Drehzahlen beschränkt und damit - wie schon in der WO-A-96/19604 ausführlich beschrieben - in ihrer Leistungsfähigkeit grundsätzlich eingeschränkt sind, hat sich im Zusammenhang mit der als Blas- bzw. Saugeinrichtung ausgebildeten Schussfaden-Ausgleichsvorrichtung herausgestellt, dass die Schussfadenspannung ohne weitere Massnahmen beim Schusseintrag hohe Spitzenwerte aufweist, wie in Abbildung 1 dargestellt ist. Dies kann bei bestimmten Auslegun- gen einer Nadelbandwebmaschine nachteilig sein, insbesondere wenn die Gefahr besteht, dass die Spitzenwerte der Schussfadenspannung beim Schussfadeπein- trag eine hohe Schussfadenbelastung allenfalls verbunden mit einem Reissen des Schussfadens bewirken. Diese hohen Spitzenwerte der Schussfadenspannung treten zwar zumeist bei der herkömmlichen Schussfaden-Ausgleichsvorrichtung mit einer Schenkelfeder nicht auf, wie aus Figur 2 hervorgeht. Allerdings nimmt die Schussfadenspannung beim Einsatz einer Schussfaden-Ausgleichsvorrichtung mit einer Schenkelfeder wegen der geringen Bandbreite der Feder sehr unter- schiedliche Werte ein, wie ebenfalls aus Figur 2 hervorgeht, was eben zu der vorstehend beschriebenen Begrenzung der Drehzahl führt.Needle looms of the type mentioned are known in many forms, such as from WO-A-96/19604. The ribbon loom contains a weft insertion needle, which is associated with a weft feeder, the - viewed in the direction of weft - a weft source, a weft brake, a weft conveyor and a pneumatically operated, designed as blowing or suction weft compensating device and before Weft insertion needle has a separate weft thread guide eye. By contrast, older needle looms have a weft compensating device, which is typically formed by a leg spring, as known, for example, from CH-646 397 A5. While the needle looms with a leg spring device are typically limited to low speeds and thus - as already described in detail in WO-A-96/19604 - are fundamentally limited in their performance, in connection with the weft thread device designed as a blowing or suction device. Balancing device proved that the weft thread tension without high action at the weft insertion, as shown in Figure 1. This may be disadvantageous in certain designs of a needle loom, in particular if there is the danger that the peak values of the weft tension at the weft insertion effect a high weft load, possibly combined with a tearing of the weft thread. Although these high peak values of the weft tension do not occur in the conventional weft compensating device with a leg spring, as shown in FIG. However, with the use of a weft compensating device with a leg spring, the weft tension decreases considerably owing to the small width of the spring. different values, as also apparent from Figure 2, which leads just to the above-described limitation of the speed.
Darstellung der ErfindungPresentation of the invention
5 Aufgabe der Erfindung ist es, eine Nadelbandwebmaschine der eingangs beschriebenen Art zu verbessern.5 object of the invention is to improve a needle loom of the type described above.
Die Aufgabe wird durch eine Nadelbandwebmaschine nach Anspruch 1 gelöst. Dabei haben die Massnahmen der Erfindung zunächst einmal zur Folge, dass eine0 Nadelbandwebmaschine zur Verfügung gestellt wird, deren Schussfadenzuführung einerseits eine hohe Regelbandbreite aufweist und die daher eine hohe Drehzahl zulässt, bei der aber grosse Schwankungen der Schussfadenspannung vermieden werden können, wie in Figur 3 dargestellt ist. Weiterhin stehen ein Messwert und eine Begrenzungsmöglichkeit für die Schussfadenspannung zur5 Verfügung, die beim Betrieb der Nadelbandwebmaschine vorteilhaft verwendet werden können.The object is achieved by a needle loom according to claim 1. Initially, the measures of the invention result in the provision of a needle loom whose weft supply on the one hand has a high control bandwidth and which therefore permits a high speed, but in which large fluctuations in the weft tension can be avoided, as shown in FIG is. Furthermore, a measured value and a limitation possibility for the weft tension are available, which can be advantageously used during operation of the needle loom.
Vorteilhafte Ausgestaltungen der Webblatteinrichtung sind in den Ansprüchen 2 bis 8 beschrieben. 0Advantageous embodiments of the reed device are described in claims 2 to 8. 0
Vorteilhaft ist es gemäss Anspruch 2, wenn die Führungsöse der Federeinrichtung zwischen der Schussfadentransporteinrichtung und der Schussfaden- Ausgleichseinrichtung angeordnet ist. 5 Von Vorteil im Sinne einer erweiterten Möglichkeit zur Auslegung der Nadelbandwebmaschine ist es, wenn die Begrenzungswerte der Schussfadenspannung durch die Federeinrichtung gemäss Anspruch 3 einstellbar sind.It is advantageous according to claim 2, when the guide eye of the spring device is arranged between the weft thread transport device and the weft thread compensation device. It is advantageous in terms of an extended possibility for designing the needle ribbon loom if the limiting values of the weft thread tension can be set by the spring device according to claim 3.
Grundsätzlich können die Messwerte der Federeinrichtung zur Anzeige oder zurö Ausgabe einer Warnung beim Über- oder Unterschreiten der Begrenzungswerte verwendet werden. Bei einer Nadelbandwebmaschine, die mit hoher Drehzahl betrieben wird, ist es aber vorteilhaft, wenn die Federeinrichtung mit einer Antriebsvorrichtung der Nadelbandwebmaschine gekoppelt ist. Gemäss Anspruch 4 wird der Antrieb unterbrochen, wenn die Begrenzungswerte der Schussfadenspannung unter- oder überschritten werden.In principle, the measured values of the spring device can be used to display or output a warning when the limiting values are exceeded or fallen short of. In a needle loom, which is operated at high speed, but it is advantageous if the spring device is coupled to a drive device of the needle loom. According to claim 4 the drive is interrupted if the limit values of the weft tension are exceeded or exceeded.
Konstruktiv ist es vorteilhaft, wenn gemäss Anspruch 5 die Federeinrichtung eine Schraubenfeder aufweist, die mit einem Kompensationsstift oder einem Stössel verbunden ist, an dem die Führungsöse angeordnet ist. Dabei kann es vorteilhaft sein, die Fördermenge der Schussfadentransporteinrichtung durch die Position des Kompensationsstiftes regelbar auszugestalten und entsprechend zu regeln.Structurally, it is advantageous if according to claim 5, the spring means comprises a coil spring which is connected to a compensation pin or a plunger on which the guide eye is arranged. It may be advantageous to adjust the delivery rate of the weft conveyor by the position of the compensation pin controllable and to regulate accordingly.
Konstruktiv ist es ebenfalls vorteilhaft, wenn die aus dem Stand der Technik bekannte, weitere Führungsöse, die zwischen der pneumatischen Schussfaden- Ausgleichseinrichtung und der Schusseintragsnadel angeordnet ist, gemäss Anspruch 7 weiter beibehalten wird.Structurally, it is also advantageous if the known from the prior art, further guide eye, which is arranged between the pneumatic weft compensating device and the weft insertion needle, according to claim 7 is further maintained.
Speziell für diese Anwendung kann auch die pneumatische Schussfaden- Ausgleichseinrichtung gemäss Anspruch 8 in einer weiterentwickelten Form eingesetzt werden. Diese weist dabei einen durch Seitenwände begrenzten Strömungskanal für den Durchtritt eines Luftstromes und die Aufnahme einer Schussfadenschlaufe auf, wobei in zumindest einer Seitenwand in Strömungs- richtung des Luftstromes hintereinander mehrere Luftdüsen stafettenartig angeordnet sind. Dadurch ist es möglich, die Schussfadenausgleichseinrichtung auf verschiedene Arten und/oder Stärken des Schussfadens einzustellen.Especially for this application, the pneumatic weft compensating device according to claim 8 can be used in a further developed form. In this case, it has a flow channel bounded by side walls for the passage of an air flow and the reception of a weft thread loop, wherein a plurality of air nozzles are arranged in a relay-like manner one behind the other in at least one side wall in the flow direction of the air flow. This makes it possible to adjust the weft balancing device to different types and / or thicknesses of the weft.
Vorteilhafterweise ist dabei - gemäss Anspruch 9 - der Abstand einander gege- nüberliegender Seitenwände des Strömungskanals einstellbar.Advantageously, according to claim 9, the distance between adjacent sidewalls of the flow channel is adjustable.
Die vorbenannten sowie die beanspruchten und in den nachfolgenden Ausführungsbeispielen beschriebenen, erfindungsgemäss zu verwendenden Elemente unterliegen in ihrer Grosse, Formgestaltung, Materialverwendung und ihrer tech- nischen Konzeption keinen besonderen Ausnahmebedingungen, so dass die in dem jeweiligen Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden können. -A-The above-mentioned as well as the claimed and described in the following embodiments, elements to be used according to the invention are subject in their size, shape design, material use and their technical conception no special conditions of exception, so that the well-known in the respective field of application selection criteria can apply without restriction. -A-
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Ausführungsbeispiele der Erfindung werden anhand schematischer Zeichnungen nachfolgend näher beschrieben, dabei zeigen:Exemplary embodiments of the invention will be described in more detail below with reference to schematic drawings, in which:
Figur 1 ein Diagramm der Schussfadenspannung im Betrieb einer herkömmlichen Nadelbandwebmaschine mit einer pneumatisch arbeitenden, als Blas- bzw. Saugeinrichtung ausgebildeten Schussfaden- Ausgleichsvorrichtung;Figure 1 is a diagram of the weft tension during operation of a conventional needle loom with a pneumatically operated, designed as blowing or suction weft compensation device;
Figur 2 ein Diagramm der Schussfadenspannung im Betrieb einer älteren Nadelbandwebmaschine mit Schenkelfeder zum Schussfaden- Ausgleich;Figure 2 is a diagram of the weft tension in the operation of an older needle loom with leg spring for weft compensation;
Figur 3 ein Diagramm der Schussfadenspannung im Betrieb einer Nadel- bandwebmaschine gemäss der vorliegenden Erfindung;FIG. 3 shows a diagram of the weft tension during operation of a needle loom in accordance with the present invention;
Figur 4 eine schematische Darstellung der Schussfadenführung beim Anschlag eines Schussfadens;Figure 4 is a schematic representation of the weft thread guide when striking a weft thread;
Figur 5 eine schematische Darstellung der Schussfadenführung beim Eintrag eines Schussfadens in ein Webfach; undFigure 5 is a schematic representation of the weft thread guide when entering a weft thread in a shed; and
Figur 6 eine schematische Darstellung der Verschiebbarkeit der Seitenwände des Strömungskanals der Schussfaden-Ausgleichseinrichtung aus Figur 4 und 5.6 shows a schematic illustration of the displaceability of the side walls of the flow channel of the weft compensating device from FIGS. 4 and 5.
Wege zur Ausführung der ErfindungWays to carry out the invention
Die Figuren 4 und 5 zeigen wesentliche Komponenten der Schussfadenzuführung einer Nadelbandwebmaschine in der schematischen Darstellung nach Art eines Blockschaubildes in zwei verschiedenen Betriebszuständen der Schusseintra- gungsnadel. Die dargestellte Schussfadenzuführung beginnt mit dem Schusskonus 2, von dem der Schussfaden 4 abgezogen wird. Der Schussfaden 4 wird dann mit Hilfe von zwei Anpressrollen 6 und 6' auf einer Transportrolle 8 geführt und von dieser den weiteren Komponenten der Schussfadenführung zugeführt. Als nächste Komponente befindet sich im Weg des Schussfadens 4 die Federeinrichtung 12 zur Messung und/oder Begrenzung der Federkraft, das eigentliche Herzstück der Erfindung, im Zusammenwirken mit einer pneumatisch arbeitenden Schussfaden- Ausgleichseinrichtung 22, die als Luftstromeinrichtung ausgebildet ist.FIGS. 4 and 5 show essential components of the weft feeder of a needle loom in the schematic representation in the manner of a block diagram in two different operating states of the weft insertion needle. The weft supply shown starts with the shot cone 2, from which the weft thread 4 is withdrawn. The weft thread 4 is then guided by means of two pressure rollers 6 and 6 'on a transport roller 8 and supplied from this to the other components of the weft thread guide. As the next component is in the path of the weft thread 4, the spring means 12 for measuring and / or limiting the spring force, the real heart of the invention, in cooperation with a pneumatically operating weft compensating device 22, which is designed as an air flow device.
Die Federeinrichtung 12 umfasst eine lineare Feder 14, die an einer Seite über einen Kompensationsstift 15 mit einer Führungsöse 16 für den Schussfaden 4 verbunden ist. An der anderen Seite ist die Feder 14 am Federgehäuse fest eingehängt. Die Federeinrichtung 12 weist zwei Endstellungssensoren 18 und 20 auf, die jeweils ein Signal abgeben, wenn die Endstellung erreicht ist. Im Ausfüh- rungsbeispiel sind die Endstellungssensoren 18 und 20 als elektrische Sensoren - Schalter - ausgebildet. In einer alternativen Ausführungsform sind die Endstellungssensoren als optische Sensoren ausgebildet. In dem hier beschriebenen Ausführungsbeispiel ist der Ausschlag der Feder 14 sehr klein. Die Feder bewirkt auf den Schussfaden also in erster Linie eine Spannungsänderung, während im hier beschriebenen Ausführungsbeispiel der Längenausgleich praktisch aus- schliesslich durch die Schussfaden-Ausgleichseinrichtung 22 bewirkt wird.The spring device 12 comprises a linear spring 14, which is connected on one side via a compensation pin 15 with a guide eye 16 for the weft thread 4. On the other side, the spring 14 is firmly attached to the spring housing. The spring device 12 has two end position sensors 18 and 20, each of which emits a signal when the end position is reached. In the exemplary embodiment, the end position sensors 18 and 20 are designed as electrical sensors - switches. In an alternative embodiment, the end position sensors are designed as optical sensors. In the embodiment described here, the deflection of the spring 14 is very small. The spring therefore primarily effects a change in tension on the weft thread, while in the exemplary embodiment described here the length compensation is effected almost exclusively by the weft-compensating device 22.
Im Folgenden wird die Wirkungsweise der Federeinrichtung 12 beschrieben. Der Kompensationsstift 15 ist horizontal um einige Zentimeter bewegbar. Dieser mit der Feder 14 gekoppelte Kompensationsstift 15 positioniert sich beim Betrieb der Webmaschine und zeigt dem Weber an, in welcher Position welche Kräfte bestehen. Wenn der Kompensationsstift 15 durch den Schussfaden 2 ganz nach vorne - also zum Weber hin - gezogen wird (hier nach links), wirkt eine erhöhte Kraft auf den Faden, die allenfalls durch Regelung des Antriebs der Transportrolle 8 nachgeregelt werden muss. Die Nachregelung, die manuell oder automatisch, z.B. mit Hilfe einer Regelelektronik ausgeführt werden kann, erlaubt dem Kompensationsstift 15, sich in der vorteilhaftesten Position einzupendeln. Die Stellung des Kompensationsstiftes 15 ganz hinten bedeutet zu loser Faden. In den beiden Endpositionen vorne und hinten wird die Maschine im vorliegenden Ausführungsbeispiel zudem gestoppt. In einer alternativen Ausführungsform der Erfindung ist eine Positionsüberwachung des Kompensationsstiftes 15 über seinen gesamten, möglichen Weg vorgesehen.The operation of the spring device 12 will be described below. The compensation pin 15 is horizontally movable by a few centimeters. This coupled with the spring 14 compensation pin 15 is positioned during operation of the loom and shows the weaver in which position which forces exist. When the compensation pin 15 is pulled completely forward by the weft thread 2 - ie toward the weaver (here to the left), an increased force acts on the thread, which must be readjusted at best by regulation of the drive of the transport roller 8. The readjustment, which can be carried out manually or automatically, for example by means of a control electronics, allows the compensation pin 15 to settle in the most advantageous position. The position of the compensation pin 15 at the very back means too loose thread. In both End positions front and rear, the machine is also stopped in the present embodiment. In an alternative embodiment of the invention, a position monitoring of the compensation pin 15 is provided over its entire possible path.
Durch die Lösung mit der Federeinrichtung 12 und dem Kompensationsstift 15 kann die Tourenzahl der Webmaschine problemlos auf 3'00O Umdrehungen pro Minute oder mehr erhöht werden. Es sollte noch betont werden, dass im hier beschriebenen Ausführungsbeispiel die Position der Feder 14 durch ihre Trägheit während dem Webprozess im Wesentlichen unverändert bleibt. Die Feder macht also die Bewegung - ausser in der Start/Stoppphase - nicht mit, gibt jedoch ihre definierte Spannung in den Endlagen an den Schussfaden weiter.By the solution with the spring device 12 and the compensation pin 15, the number of revolutions of the weaving machine can be easily increased to 3'00O revolutions per minute or more. It should be emphasized that in the embodiment described here the position of the spring 14 remains essentially unchanged due to its inertia during the weaving process. Thus, the spring does not participate in the movement - except in the start / stop phase - but passes on its defined tension in the end positions to the weft thread.
Der Schussfaden 4 verläuft von der Federeinrichtung 12 weiter zur Schussfaden- Ausgleichseinrichtung 22. Die Schussfaden-Ausgleichseinrichtung 22 weist einen durch Seitenwände begrenzten Strömungskanal für den Durchtritt eines Luftstromes und die Aufnahme einer Schussfadenschlaufe auf. Im Ausführungsbeispiel sind in einer Seitenwand in Strömungsrichtung des Luftstromes hintereinander fünf Luftdüsen 24 stafettenartig angeordnet, die für eine gleichmässige Spannung des Schussfadens sorgen. Der Strömungskanal - im hier beschriebenen Ausführungsbeispiel aus Aluminium gefertigt - kann ein konstantes Luftvolumen sicherstellen. Eine den Strömungskanal bildende Seitenwand 25 - im hier beschriebenen Ausführungsbeispiel aus Stahlblech gefertigt - kann, wie in Figur 6 dargestellt, in einem Abstand a = 0.3 bis 1.8 mm zur gegenüberliegenden Sei- tenwand 25' verschoben werden. Dadurch ist die Schussfaden- Ausgleichseinrichtung 22 auf unterschiedliche Fadenstärken und Fadenqualitäten einstellbar und damit auch die auf den Schussfaden ausgeübte Spannkraft. Mit der hier beschriebenen Schussfaden-Ausgleichseinrichtung 22 wird ein Speichereffekt ermöglicht mit einem konstanten Luftvolumen. Alternativ kann auch eine Kunststoff-Ausführung des zentralen Luftblocks und des Seitenschilds vorgesehen werden. Dies ist in Bezug auf eine Lärmreduktion, insbesondere bei dickeren Fäden vorteilhaft. Im weiteren Verlauf des Schussfadens wird dieser im vorliegenden Ausführungsbeispiel über eine Führungs- und Umlenköse 26 der Schussnadel 28 zugeführt, die den Schussfaden 4 bei geöffnetem Webfach und Stellung des Webblattes 32 - wie in Figur 5 dargestellt - zwischen die Kettfäden 34 einschiesst.The weft thread 4 extends from the spring device 12 further to the weft equalizer 22. The weft equalizer 22 has a flow channel defined by side walls for the passage of an air flow and the reception of a weft thread loop. In the embodiment, five air nozzles 24 are arranged like a relay in a side wall in the flow direction of the air flow one behind the other, which provide a uniform tension of the weft thread. The flow channel - made of aluminum in the embodiment described here - can ensure a constant volume of air. A side wall 25 forming the flow channel-made of sheet steel in the exemplary embodiment described here-can, as shown in FIG. 6, be displaced at a distance a = 0.3 to 1.8 mm from the opposite side wall 25 '. As a result, the weft compensating device 22 can be adjusted to different thread thicknesses and thread qualities, and thus also the tension force exerted on the weft thread. With the weft equalizer 22 described herein, a memory effect is enabled with a constant volume of air. Alternatively, a plastic version of the central air block and the side plate can be provided. This is advantageous in terms of noise reduction, especially with thicker threads. In the further course of the weft thread this is supplied in the present embodiment via a guide and Umlenköse 26 of the weft needle 28, the weft thread 4 with open shed and position of the reed 32 - as shown in Figure 5 - between the warp threads 34 einschiesst.
Diese im hier beschriebenen Ausführungsbeispiel eingesetzte Schussfadensteuerung mit der Federeinrichtung 12 und der Schussfaden-Ausgleichseinrichtung 22 verhindert durch zu hohe Kantenspannungen des Schussfäden bewirkte eingezogene, wellige Bandkanten. Ein weiterer Vorteil wird am folgenden Zahlenbeispiel verdeutlicht. Auf einer für 50 mm-Bänder ausgelegten Maschine kann ohne weiteres ein Band mit lediglich 15 mm Breite gewoben werden. Auf Grund der Luftvolumenlösung besteht stets genügend Fadenreserve. This weft thread control used in the exemplary embodiment described here with the spring device 12 and the weft-compensating device 22 prevents drawn, wavy strip edges caused by excessive edge tensions of the weft threads. Another advantage is illustrated by the following numerical example. On a machine designed for 50 mm belts, it is readily possible to weave a belt with a width of only 15 mm. Due to the air volume solution, there is always enough thread reserve.
Bezuαszeichenliste a AbstandAccord list a Distance
2 Schusskonus2 shot cone
4 Schussfaden4 weft
5 6 Anpressrolle5 6 Press roller
6' Anpressrolle6 'pressure roller
8 Transportrolle8 transport roller
12 Federeinrichtung12 spring device
14 Feder14 spring
10 15 Kompensationsstift10 15 Compensation pen
16 Führungsöse16 guide eyelet
18 Endstellungssensor18 end position sensor
20 Endstellungssensor20 end position sensor
22 Schussfaden-Ausgleichseinrichtung22 weft equalizer
15 24 Stafettendüsen15 24 relay nozzles
25 Seitenwand25 side wall
251 Seitenwand25 1 side wall
26 Umlenköse26 deflection eyelet
28 Schusseintragsnadel28 weft insertion needle
20 30 Webblatt20 30 reed
32 Kettfäden 32 warp threads

Claims

Patentansprüche claims
1. Nadelbandwebmaschine mit einer Schusseintragsnadel, der eine Schussfaden-Zuführeinrichtung (2) mit einer Schussfadentransporteinrichtung (6, 6', 8) und einer den Schussfaden spannenden Schussfaden-1. needle loom with a weft insertion needle, the a weft feeder (2) with a weft transport means (6, 6 ', 8) and a weft exciting weft thread
Ausgleichseinrichtung (22) zugeordnet ist, wobei die Schussfaden- Ausgleichseinrichtung (22) pneumatisch arbeitend als Luftstromeinrichtung ausgebildet ist, gekennzeichnet durch eine eine Führungsöse (16) aufweisende Federeinrichtung (12) zur Messung und/oder zur Begrenzung der Schussfadenspannung.Balancing device (22) is assigned, wherein the weft compensating device (22) is designed pneumatically working as an air flow device, characterized by a guide eye (16) having spring means (12) for measuring and / or limiting the weft tension.
2. Nadelbandwebmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Führungsöse (16) der Federeinrichtung zwischen der Schussfaden- transporteinrichtung (6, 6', 8) und der Schussfaden-Ausgleichseinrichtung (22) angeordnet ist.2. needle ribbon loom according to claim 1, characterized in that the guide eye (16) of the spring means between the weft thread transport means (6, 6 ', 8) and the weft compensating means (22) is arranged.
3. Nadelbandwebmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Begrenzungswerte der Schussfadenspannung durch die Federeinrichtung (12) einstellbar sind.3. needle loom according to claim 1 or 2, characterized in that the limiting values of the weft yarn tension by the spring means (12) are adjustable.
4. Nadelbandwebmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Federeinrichtung (12) mit einer Antriebsvorrichtung der Nadelbandwebmaschine gekoppelt ist, derart, dass der Antrieb unterbrochen wird, wenn die Begrenzungswerte der Schussfadenspannung un- ter- oder überschritten werden.4. needle loom according to one of claims 1 to 3, characterized in that the spring device (12) is coupled to a drive device of the needle loom, such that the drive is interrupted when the limit values of the weft tension are undershot or exceeded.
5. Nadelbandwebmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Federeinrichtung (12) zumindest eine Schraubenfeder (14) aufweist, die mit einem Kompensationsstift (15) oder einem Stössel verbunden ist, an dem die Führungsöse (16) angeordnet ist.5. Nadelbandwebmaschine according to one of claims 1 to 4, characterized in that the spring device (12) has at least one coil spring (14) which is connected to a compensation pin (15) or a plunger on which the guide eye (16) is arranged ,
6. Nadelbandwebmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Fördermenge der Schussfadentransporteinrichtung (6, 6', 8) durch die Position des Kompensationsstiftes (15) geregelt wird.6. needle ribbon loom according to claim 5, characterized in that the delivery rate of the weft transport means (6, 6 ', 8) through the Position of the compensation pin (15) is controlled.
7. Nadelbandwebmaschine nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine weitere Führungs- oder Umlenköse (26), die zwischen der Schussfaden-Ausgleichseinrichtung (22) und der Schusseintragsnadel (28) angeordnet ist.7. needle ribbon loom according to one of claims 1 to 6, characterized by a further guide or Umlenköse (26) which is arranged between the weft compensating means (22) and the weft insertion needle (28).
8. Nadelbandwebmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Schussfaden-Ausgleichseinrichtung (22) einen durch Seitenwände begrenzten Strömungskanal für den Durchtritt eines8. needle ribbon loom according to one of claims 1 to 7, characterized in that the weft compensating means (22) bounded by a side walls flow channel for the passage of a
Luftstromes und die Aufnahme einer Schussfadenschlaufe aufweist, wobei in zumindest einer Seitenwand in Strömungsrichtung des Luftstromes hintereinander mehrere Luftdüsen (24) Stafetten artig angeordnet sind.Air flow and the inclusion of a weft thread loop, wherein in at least one side wall in the flow direction of the air flow behind a plurality of air nozzles (24) Stafetten are arranged like.
9. Nadelbandwebmaschine nach Anspruch 7, dadurch gekennzeichnet, dass der Abstand (a) einander gegenüberliegender Seitenwände (25, 25') des Strömungskanals einstellbar ist. 9. needle loom according to claim 7, characterized in that the distance (a) of opposite side walls (25, 25 ') of the flow channel is adjustable.
EP07763934A 2006-09-05 2007-07-05 Ribbon needle loom Not-in-force EP2059633B1 (en)

Applications Claiming Priority (2)

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CH14152006 2006-09-05
PCT/CH2007/000327 WO2008028303A1 (en) 2006-09-05 2007-07-05 Ribbon needle loom

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EP2059633A1 true EP2059633A1 (en) 2009-05-20
EP2059633B1 EP2059633B1 (en) 2010-04-07

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KR (1) KR20090046835A (en)
CN (1) CN101512055A (en)
AT (1) ATE463598T1 (en)
DE (1) DE502007003420D1 (en)
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WO (1) WO2008028303A1 (en)

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DE202011051959U1 (en) 2011-11-14 2012-01-16 Textilma Ag Pneumatic thread tensioner
CN103318708A (en) * 2013-06-20 2013-09-25 东台市龙之梦服饰实业有限公司 Novel barrel yarn tension control device for dyeing
CN103541124B (en) * 2013-10-22 2015-02-18 约科布缪勒机械制造（中国）有限公司 Pneumatic weft tension compensator
EP3257983A1 (en) * 2016-06-15 2017-12-20 Textilma Ag Ribbon needle loom and corresponding weaving method
EP3269855A1 (en) * 2016-07-13 2018-01-17 Textilma Ag Ribbon needle loom

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Publication number Priority date Publication date Assignee Title
IT1110480B (en) * 1978-06-05 1985-12-23 O M M Officine Meccaniche EQUIPMENT FOR POSITIVE FEEDING OF THE WEFT WIRE IN TAPE NEEDLE FRAMES
GB2068422B (en) * 1980-02-01 1983-09-14 Nat Res Dev Weft patterning
US4577665A (en) * 1983-10-07 1986-03-25 Petig Corporation Narrow-fabric needle loom weaving system
DE9420562U1 (en) * 1994-12-22 1995-02-16 Textilma Ag, Hergiswil Ribbon loom
RU2135658C1 (en) * 1995-06-15 1999-08-27 Текстильма АГ Apparatus for transporting thread in textile machine, in particular, ribbon loom
FR2864555B1 (en) * 2003-12-24 2006-01-27 Staubli Lyon METHOD FOR MONITORING THE SUPPLY VOLTAGE OF AT LEAST ONE FRAME WIRE, FRAME WIRE FEEDER, AND WEAVING WIRE EQUIPPED WITH SUCH A DEVICE

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Title
See references of WO2008028303A1 *

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TW200825231A (en) 2008-06-16
CN101512055A (en) 2009-08-19
KR20090046835A (en) 2009-05-11
DE502007003420D1 (en) 2010-05-20
EP2059633B1 (en) 2010-04-07
WO2008028303A1 (en) 2008-03-13

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