EP0291484B1 - Verfahren zur ununterbrochenen Fadenlieferung von Spulen und Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur ununterbrochenen Fadenlieferung von Spulen und Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0291484B1
EP0291484B1 EP19880870043 EP88870043A EP0291484B1 EP 0291484 B1 EP0291484 B1 EP 0291484B1 EP 19880870043 EP19880870043 EP 19880870043 EP 88870043 A EP88870043 A EP 88870043A EP 0291484 B1 EP0291484 B1 EP 0291484B1
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EP
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Prior art keywords
thread
feed coil
coil
beginning
unwound
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP19880870043
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English (en)
French (fr)
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EP0291484A1 (de
Inventor
Henry Shaw
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Picanol NV
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Picanol NV
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/086—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to completion of unwinding of a package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • 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
    • D03D47/342—Handling the weft between bulk storage and weft-inserting means knot detection
    • 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 present invention relates to a method of continuous feeding of yarn from bobbins, more particularly allowing the continuous feeding of weft yarns going to weaving machines.
  • the invention also relates to a device implementing the method provided by the invention.
  • a first disadvantage consists in the diffficulties which the passage from one reel to the other can cause.
  • reeling anomalies can occur for the last part of the thread of a spool because the last turns present on the spool, instead of taking place regularly, slide on the spool and become tangled.
  • Another disadvantage of the traditional knotting of successive spools lies in the fact that for each new spool to be placed on the machine, it is necessary to detect not only the beginning of the new thread, but also the end of the previous thread, which can cause importance. wasted time.
  • the invention relates to a method of continuous feeding of yarn from feed spools in a weaving machine in which the feeding of the yarn is carried out by the intermediary of a supplier, this supplier constituting a thread reserve allowing the unwinding of the thread from the supplier in an intermittent movement; said method being essentially composed of a wire feed from a first coil, the presence of a second supply spool, the start of the wire of which is brought close to the wire spooled by the first supply spool, detecting when the wire of the first supply spool is almost entirely spooled without being completely , the stopping of the supply and the connection of the start of the wire coming from the second supply coil with the wire unwound by the first supply coil, and the resumption of the supply of wire from the second coil, characterized in that the supply of wire from said first coil is stopped following two conditions, firstly, the detection of said moment, and secondly, the fact that the supplier is located in a state allowing an interruption of the feeding of the thread from
  • the supplier is only stopped when the reserve of yarn on the supplier reaches an optimal level according to the weaving process.
  • the detection of the quasi-exhaustion of the wire reserve on the first supply reel is followed by the constitution of an additional wire reserve on the supplier by rotating it, for a given time, at maximum speed.
  • the device for monitoring the active supply coil rather than detecting the exact moment at which the first supply coil is fully unwound, captures the moment when it is almost completely wound up, without the 'be completely, that is to say the moment when there are still a few meters of wire on the spool.
  • this has the particular advantage that the time of stopping the supply of yarn to allow connection with the next supply spool can be chosen optimally according to the weaving cycle. .
  • this early detection makes it possible to take all the measures to stop for a brief instant the feeding of the thread from the active reel, without however interrupting the insertion of the weft nor, consequently, the weaving.
  • a variant of this method could consist in increasing the supplier's rotation speed for a short period, so as to provide an additional thread reserve on the drum. If such a reserve is established, the supplier may be immobilized for a fairly long period while providing the desired number of picks; in this case, there is ample time to tie a new supply reel.
  • the device implementing the method provided by the invention mainly consists of elements intended to present the beginning of the thread of the new supply reel facing the thread being unwound, detection elements intended to follow the unwinding active supply coils and connection elements intended to connect the two wires when passing from one coil to the next coil.
  • detection elements intended to follow the unwinding active supply coils
  • connection elements intended to connect the two wires when passing from one coil to the next coil.
  • the supply of thread 1 to a device such as a supplier 2 of a weaving machine can be carried out by the unwinding of the thread from a first supply reel 3, this thread passing through example with a guide eyelet 4.
  • the installation as shown in FIG. 1 further comprises a second supply coil 5, a device 6 intended to present the start 7 of the wire 8 of the second supply coil 5 near the wire 9 of the first supply coil 3, a connection device 10 intended to connect the wires 8 and 9, as well as sensors 11 and 12 intended to monitor the reserves of wire on the coils 3 and 5, these sensors being connected, for example, to a control unit 13 responsible for controlling the connection device 10.
  • the device 6 intended to present the start of wire 7 near the wire 9 unwound by the coil active consists, in the first embodiment shown, of two guide eyelets 14 and 15 placed side by side and through which pass, respectively, the wires 8 and 9; as well as a wire clamp 16 retaining the start 7 of the wire coming from the second supply reel 5.
  • the connection device 10 can be either a knotter or a splicer.
  • the splicing is a particularly suitable method because of its speed, because it does not cause any local weakening of the wire and because it guarantees the continuity of the wire; in other words, a spliced wire can be woven without compromising either the operation of certain sensitive organs downstream, or the final appearance of the woven product.
  • FIGS. 2 to 4 The successive phases of the operation of the installation are shown diagrammatically in FIGS. 2 to 4.
  • the sensor 11 finds that the reserve of wire on the supply coil 3 is practically exhausted, but is not absolutely.
  • the control unit 13 then deactivates the supplier so as to end the feeding of the wire 1, and activates the connection device 10.
  • the start 7 of the wire unwound by the second supply coil 5 is connected to the wire 9 of the first spool 3.
  • the residual thread 17 remaining on the supply spool 3 is cut by the thread cutter 18.
  • a new supply coil 20 is mounted in place of the coil 3 almost entirely unwound; the wire of this new coil is then positioned in the wire clamp and becomes the start of wire 7.
  • the sequence of operations just described can then be repeated, with a passage from coil 5 to coil 20 , similar to the previous passage between the coils 3 and 5.
  • the mode of detection of quasi-exhaustion of the coil 3 by means of the sensor 11 is illustrated in FIG. 5.
  • the optical sensor 11, placed next to the supply coil 3, sends a signal 21 which is reflected by the coil 19 and which is detected by the sensor 11. It is clear that the coil 19 will only reflect the signal when the number of turns present is reduced and the surface of the coil 19 becomes visible. To ensure the reflection of the optical signal 21, the coil 19 can be covered with a highly reflective coating affecting, for example, the shape of a spiral ribbon 22.
  • the activation of the sensor 11 can be followed either by the constitution of an additional wire reserve on the supplier 2, before the termination of the connection from the start from wire 7 to wire 9.
  • the conditions of this process are represented schematically in the graphs of FIGS. 6 to 8.
  • the quantity of wire A present on this reel decreases regularly, phenomenon shown for reasons of simplicity by the downward curve 23 of FIG. 6.
  • the speed of the supplier for example the number of turns made by the wire guide arm 24, can vary between a minimum value N1 and a maximum value N2, condition represented by curve 25 in FIG. 7.
  • the wire reserve R on the drum will also vary between two values R1 and R2, as represented by curve 27 in FIG. 8; this variation is due on the one hand to the variation in the number of turns made by the wire guide arm 24 and, on the other hand, to the unwinding of the wire 9 according to an intermittent movement at the start of the drum 26.
  • the quantity of wire A When unwinding the supply reel 3, the quantity of wire A will reach a predetermined minimum value A1 at a time t1, after which the sensor will send a signal to the control unit 13. From then on, the supplier 2 will switch to its maximum speed N2, to which it will be maintained for a given period X. It is clear that this rise in speed will have the effect of further reducing the quantity of wire A present on the first supply reel 3, at the same time as the reserve of wire R present on the supplier 2 increases. From the moment t2 when the wire reserve on the supplier 2 has reached a predetermined maximum value R3, the supplier will be deactivated and braked until it stops. However, the weaving machine remaining in activity, the maximum yarn reserve R3 will be brought back in a short time to an absolute minimum R0.
  • FIG. 9 represents a reel holder 28 consisting of a conveyor belt successively presenting the feed reels in front of the feed device and implementing the method provided by the invention.
  • the device 6 mentioned above, and intended to present the start 7 of the wire of the second supply coil 5 near the wire 9 of the first supply coil 3, in this case consists essentially of the wire clamp 16 mentioned above, placed here near the guide eyelet 4, and a movable wire guide 30 which, when the first coil 3 is almost exhausted, can move the wire 9 a certain distance to place it in a substantially parallel position relative to the wire 8 of the second coil 5. This operation is illustrated in FIG. 10. After the paralleling, the connection device 10 is activated to join the wires 8 and 9 either by knotting or by a splice.
  • FIG. 11 also represents the way in which the start 7 of the thread coming from the following supply spool 20 can be sought by a wire finder 31.
  • a wire finder 31 can consist, for example, of a vacuum cleaner nozzle covering the surface of the supply coil 20 and capable of taking the start of wire 7, which can then, using an eye-catching device not shown in the figure, be brought before the wire clamp 16 to be retained there.
  • the bobbin of the old supply coil, carrying the turns of residual wire 17, is evacuated.
  • the spool holder 28 illustrated in FIGS. 9 to 11 requires only a single sensor 11, intended for controlling the quantity of wire present on the supply spools, since the transport belt will always have brought them in the same place when the wire is almost exhausted during unwinding.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Claims (12)

1. Verfahren zur kontinuierlichen Fadenbeschickung aus Garnspulen in einer Webmaschine in der die Garnzufuhr stattfindet mittels eines Liefergeräts, dieses Liefergerät bildet eine Fadenreserve, die das Abwickeln des Fadens aus den Liefergerät in einer intermittierender Bewegung erlaubt, das genannte Verfahren besteht grundsätzlich aus der Zufuhr eines Fadens beim Verlassen einer ersten Garnspule (3) ; die Anwesenheit einer zweiten Garnspule (5) von dem der Fadenanfang (7) in die Nähe des von der ersten Garnspule (3) abgewickelten Fadens (9) geführt wird; aus dem Entdecken des Augenblicks in dem der Faden der ersten Spule (3) beinahe abgewickelt ist ohne es ganz zu sein, dem Anhalten der Zufuhr und dem Verbinden des Fadenanfangs (7) aus der zweiten Garnspule (5) mit dem Faden (9) der von der ersten Garnspule (3) abgewickelt wird; und der Wiederaufnahme der Fadenzufuhr aus der zweiten Garnspule, dadurch gekennzeichnet daß die Fadenzufuhr aus der genannten ersten Garnspule (3) beim Anhalten unter zwei Bedingungen stattfindet, erstens, die Feststellung des genannten Augenblicks und zweitens, die Tatsache daß das Liefergerät imstande ist für einen kurzen Augenblick eine Unterbrechung der Fadenzufuhr von der aktive Garnspule zu gestatten, ohne übrigens das Weben zu unterbrechen; und daß das Restgarn (17) der ersten Garnspule (3) abgeschnitten wird um die Entfernung dieses Restgarns (17) zu ermöglichen.
2. Verfahren laut Anspruch 1, dadurch gekennzeichnet daß die Feststellung, daß die Fadenreserve der ersten Garnspule (3) nahezu erschöpft ist, von der Bildung einer zusätzlichen Fadenreserve (R3) im Liefergerät (2) gefolgt wird, durch das Gerät eine vorgegebene Zeit (X) auf Höchstgeschwindigkeit (N2) drehen zu lassen, wonach das Liefergerät (2) angehalten wird und der Fadenanfang (7) aus der zweiten Garnspule (5) verbunden wird mit dem Faden (9) der von der ersten Garnspule (3) abgewickelt wird.
3. Verfahren laut Anspruch 1, dadurch gekennzeichnet daß nachdem entdeckt wird daß die Fadenreserve auf der ersten Garnspule (3) nahezu erschöpft ist das Liefergerät (2)erst angehalten wird nachdem die Fadenreserve (R) auf dem Liefergerät (2) eine optimale Größe erreicht hat, das Zusammenknoten des Fadenanfangs (7) abgewickelt von der zweiten Garnspule (5) und dem Faden (9) abgewickelt von der ersten Garnspule (3) findet erst nachher statt.
4. Verfahren laut eines der obengenannten Ansprüche, gekennzeichnet dadurch daß die Entdeckung daß die Fadenreserve auf der ersten Garnspule (3) nahezu erschöpft ist stattfindet durch ein optisches Gerät und basiert auf Reflexion eines Signals auf den Kern (19) der ersten Garnspule (3) wenn diese nahezu abgewickelt ist ohne ganz leer zu sein.
5. Verfahren laut eines der obengenannten Ansprüche, gekennzeichnet dadurch daß der Anfang (7) des Fadens von der zweiten Spule (5) mittels einer Spleiße mit dem von der ersten Garnspule (3) abgewickelten Faden (9) verbunden wird.
6. Verfahren laut eines der obengenannten Ansprüche 1 bis 4, dadurch gekennzeichnet daß der Anfang (7) des Fadens von der zweiten Spule (5) mittels eines Knotens mit dem von der ersten Garnspule (3) abgewickelten Faden (9) verbunden wird.
7. Vorrichtung geeignet zur Ausführung des Verfahrens laut eines der Ansprüche 1 bis 6, mehr im besonderen in einer Webmaschine in welche die Zuführung des Fadens stattfindet mittels eines Liefergeräts, die genannte Vorrichtung bestehend aus den Elementen (6) dazu bestimmt um den Anfang (7) des von der zweiten Garnspule (5) kommenden Fadens und den von der ersten Garnspule (5) abgewickelten Faden (9) zusammenzuführen; aus Sensoren (11,12) um den Augenblick zu bestimmen in dem die aktive Garnspule nahezu abgewickelt ist ohne es ganz zu sein; aus Elementen (10) bestimmt um die genannten zwei Fäden (7,9) zu verbinden, dadurch gekennzeichnet daß die Vorrichtung eine zu den genannten Sensoren (11, 12) und den Elementen (10) dazu bestimmt um die Fäden (7,9) zu verbinden, abgezweigte Steuereinheit (13) umfaßt, die unter den genannten zwei Bedingungen die Betätigung der genannten Elemente (10) vorbeugt.
8. Vorrichtung laut Anspruch 7, dadurch gekennzeichnet daß die Elemente (6) dazu bestimmt den Anfang (7) des Fadens der die zweite Garnspule (5) verläßt zusammenzubringen mit dem Faden (9) der von der ersten Garnspule (3) abwickelt, grundsätzlich besteht aus zwei Führungsäuglein (14, 15) die nebeneinander aufgestellt worden sind und die respektive den Anfang des Fadens (7) und den Faden (9) führen, sowie einem Fadengreifer (16) der den Anfang des Fadens (7) hält.
9. Vorrichtung laut Anspruch 7, dadurch gekennzeichnet daß die Elemente (6) dazu bestimmt den Anfang (7) des Fadens der die zweite Garnspule (5) verläßt zusammenzubringen mit dem Faden (9) der von der ersten Garnspule (3) abwickelt, grundsätzlich besteht aus einem Äuglein (4) das den Faden (9) der ersten Garnspule (3) führt, einem Fadengreifer (16) der den Anfang (7) des von der zweiten Garnspule (5) abgewickelten Fadens hält und diesen Anfang (7) in die Nähe des von der ersten Garnspule (3) abgewickelten Fadens (9) bringt, sowie einem beweglichen Fadenführer (30) imstande auf den von der ersten Garnspule (3) abgewickelten Faden (9) einzuwirken um ihn gegen oder nahezu gegen den Anfang (7) des von der zweiten Garnspule (5) kommenden Fadens zu führen.
10. Vorrichtung laut eines der Ansprüche 7 bis 9, dadurch gekennzeichnet daß es ebenfalls einen Fadendetektor (31) umfasst der die Befestigung des Anfangs des Fadens (7) jeder angebotene Spule (20) gestattet und diesen Anfang zum Fadengreifer (16) führt.
11. Vorrichtung laut eines der Ansprüche 7 bis 10, dadurch gekennzeichnet daß der obengenannte Sensor (11) oder die obenerwähnten Sensoren (11, 12) optische Empfänger sind die den Kern (19) der aktiven Garnspule (3) beobachten und basieren auf Reflexion eines optischen Signals (21) auf diesen Kern.
12. Vorrichtung laut Anspruch 11, dadurch gekennzeichnet daß die Oberfläche des Spulkerns (19) der verwendeten Garnspulen (3, 5, 20) versehen sind mit einem sehr stark reflektierenden Streifen (22).
EP19880870043 1987-03-13 1988-03-10 Verfahren zur ununterbrochenen Fadenlieferung von Spulen und Vorrichtung zur Durchführung dieses Verfahrens Expired - Lifetime EP0291484B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700260A BE1000378A4 (nl) 1987-03-13 1987-03-13 Werkwijze voor een kontinue draadtoevoer vanaf voorraadspoelen en inrichting die deze wekwijze toepast.
BE8700260 1987-03-13

Publications (2)

Publication Number Publication Date
EP0291484A1 EP0291484A1 (de) 1988-11-17
EP0291484B1 true EP0291484B1 (de) 1992-07-01

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EP19880870043 Expired - Lifetime EP0291484B1 (de) 1987-03-13 1988-03-10 Verfahren zur ununterbrochenen Fadenlieferung von Spulen und Vorrichtung zur Durchführung dieses Verfahrens

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EP (1) EP0291484B1 (de)
BE (1) BE1000378A4 (de)
DE (1) DE3872449T2 (de)

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Publication number Priority date Publication date Assignee Title
IT1305975B1 (it) * 1998-11-06 2001-05-23 3 T S R L Apparecchiatura per il cambio automatico delle rocche di alimentazionedel filo di trama in un telaio tessile, e relativo metodo.
US6672045B2 (en) * 2001-03-23 2004-01-06 E. I. Du Pont De Nemours And Company Apparatus and method for splicing threadlines by knot-induced thread twist entanglement
FI116672B (fi) * 2003-06-27 2006-01-31 Nextrom Holding Sa Menetelmä ja sovitelma kuidunomaisen tuotteen käsittelyn yhteydessä
EP1686086A1 (de) * 2005-01-28 2006-08-02 Schärer Schweiter Mettler AG Vorlagespulenwechselverfahren und Vorrichtung
EP2163667B1 (de) * 2008-09-12 2011-11-23 Karl Mayer Textilmaschinenfabrik GmbH Drehgatter einer Musterkettenschärmaschine und Musterkettenschärmaschine
EP2284303B1 (de) * 2009-08-12 2011-11-23 Karl Mayer Textilmaschinenfabrik GmbH Drehgatter einer Musterkettenschärmaschine, Musterkettenschärmaschine und Verfahren zum Messen eines Spulendurchmessers
EP2540882B1 (de) * 2011-06-28 2013-09-18 Karl Mayer Textilmaschinenfabrik GmbH Musterkettenschärmaschine
CN109052046A (zh) * 2018-07-17 2018-12-21 河南巨力钢丝绳制造有限公司 连续自动盘条放线架
DE102019112554B4 (de) 2019-05-14 2020-12-17 Cetex Institut gGmbH Verfahren und Vorrichtung zum kontinuierlichen Prozessieren mehrerer Rovings
CN113682891B (zh) * 2021-09-07 2023-05-19 巨石集团有限公司 一种单机头双分拉饼络机及其饼络方法

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Publication number Priority date Publication date Assignee Title
BE493935A (de) * 1949-03-31
DE1535188A1 (de) * 1965-08-28 1970-08-20 Reiners Walter Dr Ing Spulengatter fuer Textilmaschinen
DE2700974A1 (de) * 1977-01-12 1978-07-13 Schlafhorst & Co W Verfahren und vorrichtung zum verbinden von fadenenden

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DE3872449T2 (de) 1992-12-03
BE1000378A4 (nl) 1988-11-16
DE3872449D1 (de) 1992-08-06
EP0291484A1 (de) 1988-11-17

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