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EP0452327B1 - Device and process for automatically joining threads - Google Patents

Device and process for automatically joining threads Download PDF

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Publication number
EP0452327B1
EP0452327B1 EP89910063A EP89910063A EP0452327B1 EP 0452327 B1 EP0452327 B1 EP 0452327B1 EP 89910063 A EP89910063 A EP 89910063A EP 89910063 A EP89910063 A EP 89910063A EP 0452327 B1 EP0452327 B1 EP 0452327B1
Authority
EP
European Patent Office
Prior art keywords
thread
carriage
threads
clamps
thread guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89910063A
Other languages
German (de)
French (fr)
Other versions
EP0452327A1 (en
Inventor
Markus Jaeggi
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.)
Viscosuisse SA
Original Assignee
Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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 Rhone Poulenc Viscosuisse SA, Societe de la Viscose Suisse SA filed Critical Rhone Poulenc Viscosuisse SA
Publication of EP0452327A1 publication Critical patent/EP0452327A1/en
Application granted granted Critical
Publication of EP0452327B1 publication Critical patent/EP0452327B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices
    • D04B15/62—Thread guides for circular knitting machines; Thread-changing devices with thread knotters
    • 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
    • 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 device for automatically connecting threads, consisting of a frame with a plurality of thread clamps and a stepwise horizontally movable carriage on which a thread connecting device is provided, a method for connecting threads and a use of the device.
  • bobbin changer a device which allows threads to be taken from 50 to 100 bobbins. It is used to manufacture a test knitted tube, which is composed of short sections according to the number of bobbins presented (W. Stein, Textile Horizons, (1988) pages 40-42). The sample stocking is used for a visual assessment or as a template for a colorimetric evaluation of the sections after it has been colored.
  • a program-controlled device for connecting filament yarns is known from DE-A-33 36 202. Then a first stationary thread is connected to a second running thread by air swirling and is only separated from the running thread when both threads have the same speed. The ends of the threads of the supply spools are held in clamping points which are designed as bolts and are pressed mechanically by spring pressure against a support surface. The uniform mechanical loading of many clamping points can only be accomplished with great effort.
  • the object of the invention is to provide both an improved device and a method for the automatic, safe change of a large number of threads of different bobbins and their step-wise connection.
  • each thread clamp is assigned a thread guide tube at a certain distance perpendicular to the thread pull, said thread guide tube being connected to a vertically movable suction bar.
  • the thread is permanently pre-tensioned until it is removed for thread retraction and cannot spring back or evade in any way.
  • the thread is expediently held by suction until it is released with a thread separating device.
  • the thread guide tubes are fastened in a profile rail, equipped with a thread guide eyelet at the end of the thread inlet and preferably consist of ceramic tubes. This has the advantage that the thread is drawn in cleanly when it is sucked in.
  • the segment-by-segment arrangement of the suction blocks has the advantage that a certain number of threads is kept under a uniform tension and, overall, works with less energy can be.
  • Each suction block is equipped with an injector nozzle and a thread discharge hose.
  • the lifting plate has the advantage that after the suction bar has been docked onto the thread guide tubes, all thread clamps are relieved by the lifting plate, which enables general thread pulling.
  • a pneumatic cylinder arranged on a slide as the threading arm, which is connected to the suction bar and can take over the free end of the thread between the entrance of the thread guide tube and the thread clamp.
  • the pneumatic cylinder loads the thread clamp before a position shift and only releases it when the threading arm is in the suction position in order to load the next clamp after the position shift.
  • Pneumatic pick-up and transport of the thread has proven to be more advantageous and safer than a mechanical gripper arm.
  • a thread is expediently threaded into the threading arm by means of an injector mounted at the outlet by suction.
  • Both a thread separating device and a thread marker are provided on the carriage itself. After the thread connection has been completed, the thread cutting device cuts off the "old" thread behind the connection point.
  • the suction bar is docked to the thread guides.
  • a change of overlay or supply is the change in a creel with new coils.
  • Thread ends lying in the area of the openings of the thread guide tubes are sucked in and, by the general release of the thread clamps, the new templates, which have been connected to the old thread rest, are brought into the operating position by suction.
  • the actual work, change process is released.
  • all thread clamps are relieved by the lifting plate.
  • the thread clamps are activated to prevent unthreading.
  • FIG. 2 parallel threads coming from a gate are shown and because of the overview only the threads 7,7 'are designated.
  • the thread 7 ' is already connected to thread 15 and lies in the slot 13 from which the thread residue 15' is sucked off after cutting with the thread separating device 9.
  • a new thread 7 is in the slot 12 and is connected to the thread 15.
  • the thread 15 passes through a thread guide 20 and 21 arranged in front of and behind the thread monitor 14.
  • the threading arm 11 is shown with its mouth between the thread guide tube 6.
  • FIG. 3 three sections 10 ', 10' 'and 10' '' of the suction bar 10 are shown. Each of the sections 10 ', 10' 'and 10' '' is provided with an injector and an exhaust pipe 16. For the sake of clarity, suction tubes 16 and 16 'are only shown for the sections 10' and 10 '' '.
  • Each suction bar 10 includes a piston 17 with a flexible air connection, not shown. The suction bar 10 is displaceable in the vertical direction, indicated by a double arrow.
  • the thread separating element 22 serves to release the threads 7. A soldering iron can serve as the thread separating element 22.
  • the threads 7 held by the suction bar 10 are released individually by the thread separating device 9 due to the gradual displacement of the carriage 2.
  • the released thread piece 7 can be taken over by the threading arm 11 by suction.
  • the threading arm 11 can feed the thread into the thread connecting device 8.
  • the lifting cylinder 23 is for the actuation of a thread clamp 5; a lifting plate 24 is provided for all thread clamps 5.
  • threads 7 are held by thread clamps 5 and guided over thread guide tubes 6 before starting.
  • the threads 7 hang down about 10 cm with their free ends.
  • the connected thread 15 leads through the thread connecting device 8 and past the thread monitor 14, for example to a circular knitting machine, not shown.
  • the threading arm 11 pivots towards the thread clamp 5, and the thread 7 is drawn in by the threading arm 11.
  • the thread clamp 5 is raised pneumatically by the piston 17; the thread 7 is pulled into the slot 12.
  • the thread connecting device 8 for example a thread splicer, is actuated and the thread is thus connected to the thread 15 of the knitting machine by a gate, not shown.
  • the knitting machine is started and stopped again after a predetermined time, corresponding to the size of the desired knitting section.
  • the piston 17 is vented and the thread 7 is held again by the thread clamp 5.
  • the thread 7 is changed from the slot 12 into the slot 13 by the thread lifter 18 and separated after the thread connection by means of the thread separating device 9.
  • a pair of scissors or a soldering iron can serve as the thread separating device 9.
  • the thread connecting device 8 mounted on the carriage 2 is moved by the motor 3 to the next thread location, as a result of which the cycle with the thread 7 ′ starts again.
  • the carriage 2 moves to the zero position.
  • the change machine is restarted.
  • the suction bar 10 is raised and coupled to the thread guide tubes 6.
  • the thread sections, which are arranged between thread clamp 5 and thread guide tube 6 more or less lying around are now sucked into the thread guide tube 6.
  • the lifting plate 24 opens all the thread clamps 5, whereby all threads are pulled through until all the connection points old / new template are pulled through.
  • the lifting plate 24 moves away.
  • the thread clamps 5 are thereby set in function.
  • the suction bar 10 is lowered, whereby the readiness for the gradual thread change is created.
  • the carriage returns to the starting position.
  • the device according to the invention makes it possible to carry out thread take-off according to selectable lengths from a large number of bobbins.
  • a splicer or knotter known per se for the first time it is possible, depending on the design of the machine size, to connect more than 100 supply spools, the threads of which are pre-sorted in the device, to one another fully automatically.
  • the number of change positions can be specified to the machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

In a device for joining a large number of threads from the bobbins of a loom, to each thread clamp (5) is allocated a thread guide tube (6) communicating with a vacuum duct (10) movable perpendicularly to the shuttle (2).

Description

Die Erfindung betrifft eine Vorrichtung zum automatischen Verbinden von Fäden, bestehend aus einem Rahmen mit einer Vielzahl von Fadenklemmen und einen schrittweise horizontal bewegbaren Schlitten, auf welchem eine Fadenverbindungseinrichtung vorgesehen ist, ein Verfahren zum Verbinden von Fäden und eine Verwendung der Vorrichtung.The invention relates to a device for automatically connecting threads, consisting of a frame with a plurality of thread clamps and a stepwise horizontally movable carriage on which a thread connecting device is provided, a method for connecting threads and a use of the device.

Der automatische Fadenwechsel einer grossen Anzahl von Spulen, welche auf einem Gatter oder Spulenwagen aufgesteckt sind, hat zur rationellen Verarbeitung eine grosse Bedeutung.The automatic thread change of a large number of bobbins, which are attached to a creel or bobbin wagon, is of great importance for efficient processing.

Unter der Bezeichnung Spulenwechsler ist eine Vorrichtung bekannt, welche es gestattet, von 50 bis 100 Spulen Fäden zu entnehmen. Er wird eingesetzt zur Herstellung eines Teststrickschlauches, der sich aus kurzen Abschnitten entsprechend der Anzahl der vorgelegten Spulen zusammensetzt (W. Stein, Textile Horizons, (1988) Seiten 40-42). Der Probenstrumpf dient für eine visuelle Beurteilung oder als Vorlage für eine farbmetrische Auswertung der Abschnitte nachdem er gefärbt wurde.Under the name bobbin changer, a device is known which allows threads to be taken from 50 to 100 bobbins. It is used to manufacture a test knitted tube, which is composed of short sections according to the number of bobbins presented (W. Stein, Textile Horizons, (1988) pages 40-42). The sample stocking is used for a visual assessment or as a template for a colorimetric evaluation of the sections after it has been colored.

Aus der DE-A-33 36 202 ist eine programmgesteuerte Vorrichtung zum Verbinden von Filamentgarnen bekannt. Danach wird ein erster ruhender Faden mit einem zweiten laufenden Faden durch Luftverwirbeln verbunden und erst dann vom laufenden Faden getrennt, wenn beide Fäden die gleiche Geschwindigkeit aufweisen. Die Fäden der Vorlagespulen werden mit ihren Enden in Klemmstellen gehalten, die als Bolzen ausgebildet sind und durch Federdruck gegen eine Auflagefläche mechanisch angepresst werden. Die gleichmässige mechanische Belastung vieler Klemmstellen ist nur sehr aufwendig zu bewerkstelligen.A program-controlled device for connecting filament yarns is known from DE-A-33 36 202. Then a first stationary thread is connected to a second running thread by air swirling and is only separated from the running thread when both threads have the same speed. The ends of the threads of the supply spools are held in clamping points which are designed as bolts and are pressed mechanically by spring pressure against a support surface. The uniform mechanical loading of many clamping points can only be accomplished with great effort.

Obwohl der bekannte Spulenwechselautomat in vielen Fällen den Bedürfnissen genügt, weist er einige Nachteile auf. So ist die Zahl der Fäden auf maximal 96 beschränkt. Häufige Fadenbrüche an den Klemmen stören die an sich rasche Wechselfrequenz.Although the known bobbin changing machine meets the needs in many cases, it has some disadvantages. The number of threads is limited to a maximum of 96. Frequent Thread breaks at the terminals disrupt the rapid alternating frequency.

Aufgabe der Erfindung ist es, sowohl eine verbesserte Vorrichtung als auch ein Verfahren zum automatischen, sicheren Wechsel einer grossen Anzahl von Fäden verschiedener Spulen und deren schrittweises Verbinden zur Verfügung stellen.The object of the invention is to provide both an improved device and a method for the automatic, safe change of a large number of threads of different bobbins and their step-wise connection.

Diese Aufgabe wird erfindungsgemäss nach Anspruch 1 dadurch gelöst, dass jeder Fadenklemme in einem bestimmten Abstand senkrecht zum Fadenzug ein Fadenführerrohr zugeordnet ist, welches mit einem vertikal bewegbaren Absaugbalken in Verbindung steht.This object is achieved according to the invention in that each thread clamp is assigned a thread guide tube at a certain distance perpendicular to the thread pull, said thread guide tube being connected to a vertically movable suction bar.

Durch die Absaugung erhält der Faden bis zur Abnahme für den Fadeneinzug eine permanente Vorspannung und kann nicht zurückspringen oder sonstwie ausweichen. Der Faden wird zweckmässig so lange durch Ansaugen gehalten, bis er mit einer Fadentrenneinrichtung freigegeben wird.Through suction, the thread is permanently pre-tensioned until it is removed for thread retraction and cannot spring back or evade in any way. The thread is expediently held by suction until it is released with a thread separating device.

Die Fadenführerrohre sind in einer Profilschiene befestigt, am Ende des Fadeneinlaufes mit einer Fadenführeröse ausgestattet und bestehen bevorzugt aus Keramikrohren. Das hat den Vorteil, dass beim Ansaugen der Faden sauber eingezogen wird.The thread guide tubes are fastened in a profile rail, equipped with a thread guide eyelet at the end of the thread inlet and preferably consist of ceramic tubes. This has the advantage that the thread is drawn in cleanly when it is sucked in.

Am Ausgang der Fadenführerrohre sind Gummimembranen, Dichtungen angebracht, damit beim Ankoppeln des Absaugbalkens an die Fadenführerrohre die Absaugleistung bis an die Saugöffnung der Fadenführerrohre verlustfrei erfolgen kann.At the exit of the thread guide tubes, rubber membranes and seals are attached, so that when the suction bar is connected to the thread guide tubes, the suction power can be loss-free up to the suction opening of the thread guide tubes.

Die segmentweise Anordnung der Saugblöcke hat den Vorteil, dass eine bestimmte Fadenzahl unter gleichmassiger Spannung gehalten und insgesamt mit weniger Energie gearbeitet werden kann. Jeder Saugblock ist mit einer Injektordüse und einem Fadenabführschlauch ausgerüstet.The segment-by-segment arrangement of the suction blocks has the advantage that a certain number of threads is kept under a uniform tension and, overall, works with less energy can be. Each suction block is equipped with an injector nozzle and a thread discharge hose.

Es ist zweckmässig einen Abhebezylinder und eine Abhebeplatte vorzusehen. Die Abhebeplatte hat den Vorteil, dass nach dem Andocken des Absaugbalkens an die Fadenführerrohre alle Fadenklemmen durch die Abhebeplatte entlastet werden, wodurch der allgemeine Fadendurchzug ermöglicht wird.It is advisable to provide a lifting cylinder and a lifting plate. The lifting plate has the advantage that after the suction bar has been docked onto the thread guide tubes, all thread clamps are relieved by the lifting plate, which enables general thread pulling.

Es ist zweckmässig, als Einfädelarm einen auf einem Schlitten angeordneten Pneumatikzylinder zu verwenden, welcher mit dem Absaugbalken in Verbindung steht und das freie Fadenende zwischen dem Eingang des Fadenführerrohrs und der Fadenklemme übernehmen kann. Der Pneumatikzylinder belastet die Fadenklemme vor einer Positionsverschiebung und gibt sie erst frei, wenn der Einfädelarm in Ansaugposition ist, um nach der Positionsverschiebung die nächste Klemme zu belasten. Die pneumatische Aufnahme und der Transport des Fadens hat sich als vorteilhafter und sicherer als ein mechanischen Greiferarm erwiesen.It is expedient to use a pneumatic cylinder arranged on a slide as the threading arm, which is connected to the suction bar and can take over the free end of the thread between the entrance of the thread guide tube and the thread clamp. The pneumatic cylinder loads the thread clamp before a position shift and only releases it when the threading arm is in the suction position in order to load the next clamp after the position shift. Pneumatic pick-up and transport of the thread has proven to be more advantageous and safer than a mechanical gripper arm.

Die Bewegung des Einfädelarmes wird zweckmässig über eine Schablone gesteuert. Das Einfädeln eines Fadens in den Einfädelarm erfolgt zweckmässig durch einen am Ausgang montierten Injektor durch Ansaugen.The movement of the threading arm is appropriately controlled using a template. A thread is expediently threaded into the threading arm by means of an injector mounted at the outlet by suction.

Am Schlitten selbst sind sowohl eine Fadentrenneinrichtung als auch ein Fadenmarkierer vorgesehen. Die Fadentrenneinrichtung schneidet nach Vollzug der Fadenverbindung den "alten" Faden hinter der Verbindungsstelle ab.Both a thread separating device and a thread marker are provided on the carriage itself. After the thread connection has been completed, the thread cutting device cuts off the "old" thread behind the connection point.

Nach erfolgtem Auflage- bzw. Vorlagewechsel wird der Absaugbalken an die Fadenführer angedockt. Unter Auflage- bzw. Vorlagewechsel ist der Wechsel in einem Gatter mit neuen Spulen zu verstehen. Die vom alten Ablauf abgeschnittenen im Bereich der Öffnungen der Fadenführerröhrchen liegenden Fadenenden werden angesaugt und durch die allgemeine Freigabe der Fadenklemmen die neuen Vorlagen, welche mit dem alten Fadenrest verbunden wurden, durch Absaugen in die Betriebsposition gebracht. Nach dem Absenken des Absaugbalkens und dem Einsatz der Fadenklemmen wird der eigentliche Arbeits-, Wechsel-Prozess freigegeben. Nach dem Andocken des Absaugbalkens an die Fadenführerrohre werden somit alle Fadenklemmen durch die Abheberplatte entlastet. Nach dem Abdocken des Saugbalkens von den Fadenführerrohren werden die Fadenklemmen in Funktion gesetzt, um ein Ausfädeln zu verhindern.After changing the overlay or the original, the suction bar is docked to the thread guides. A change of overlay or supply is the change in a creel with new coils. Those cut off from the old process Thread ends lying in the area of the openings of the thread guide tubes are sucked in and, by the general release of the thread clamps, the new templates, which have been connected to the old thread rest, are brought into the operating position by suction. After lowering the suction bar and using the thread clamps, the actual work, change process is released. After the suction bar has docked onto the thread guide tubes, all thread clamps are relieved by the lifting plate. After the squeegee has been undocked from the thread guide tubes, the thread clamps are activated to prevent unthreading.

Die Erfindung soll anhand einer Zeichnung näher erläutert werden.The invention will be explained in more detail with reference to a drawing.

Es zeigen:

Fig. 1
eine perspektivische Darstellung der erfindungsgemässen Vorrichtung
Fig. 2
eine Draufsicht auf die Vorrichtung
Fig. 3
eine abgesenkte Position des Absaugbalkens
Fig. 4
eine Detailansicht der Vorrichtung nach Fig. 1
In Fig. 1 ist mit dem Bezugszeichen 1 ein Rahmen dargestellt. Auf dem Rahmen 1 ist ein durch einen Elektromotor 3 und einen Zahnriemen 4 bewegbarer Schlitten 2 vorgesehen. In Rahmen 1 sind Fadenklemmen 5 und Fadenführerrohre 6 angeordnet. Über nicht gezeigte Fadenführer sind von je einer Spule eines Gatters, von denen nur Fäden 7,7' markiert sind, gespannt. Am Schlitten 2 sind eine Fadenverbindungseinrichtung 8, eine Fadentrenneinrichtung 9, ein Einfädelarm 11 und ein Fadenwächter 14 angeordnet. Die Fadenverbindungseinrichtung 8, im vorgestellten Fall ein Spleisser, weist einen Schlitz 12 und einen Schlitz 13 auf. Ein Faden 15 besteht aus dem Faden 7, resp. nach dem Verbund aus dem Faden 7'. Ein Fadentrennelement 22 ist für die Freigabe des Fadens 7 vorgesehen.Show it:
Fig. 1
a perspective view of the inventive device
Fig. 2
a plan view of the device
Fig. 3
a lowered position of the suction bar
Fig. 4
2 shows a detailed view of the device according to FIG. 1
A frame is shown in FIG. 1 with reference number 1. A carriage 2, which can be moved by an electric motor 3 and a toothed belt 4, is provided on the frame 1. Thread clamps 5 and thread guide tubes 6 are arranged in frame 1. Thread guides, not shown, are each tensioned by a spool of a gate, of which only threads 7, 7 'are marked. A thread connecting device 8, a thread separating device 9, a threading arm 11 and a thread monitor 14 are arranged on the carriage 2. The thread connecting device 8, in the present case a splicer, has a slot 12 and a slot 13. A thread 15 consists of the thread 7, respectively. after this Compound of thread 7 '. A thread separating element 22 is provided for the release of the thread 7.

In Fig. 2 sind von einem Gatter kommende parallele Fäden dargestellt und wegen der Übersicht nur die Fäden 7,7' bezeichnet. Der Faden 7' ist bereits mit Faden 15 verbunden und liegt im Schlitz 13 aus dem der Fadenrest 15' nach dem Abschneiden mit der Fadentrenneinrichtung 9 abgesaugt wird. Ein neuer Faden 7 liegt im Schlitz 12 und wird mit dem Faden 15 verbunden. Der Faden 15 führt durch je einen vor und hinter dem Fadenwächter 14 angeordneten Fadenführer 20 und 21. Der Einfädelarm 11 ist mit seiner Mündung zwischen dem Fadenführerrohr 6 gezeigt.In Fig. 2 parallel threads coming from a gate are shown and because of the overview only the threads 7,7 'are designated. The thread 7 'is already connected to thread 15 and lies in the slot 13 from which the thread residue 15' is sucked off after cutting with the thread separating device 9. A new thread 7 is in the slot 12 and is connected to the thread 15. The thread 15 passes through a thread guide 20 and 21 arranged in front of and behind the thread monitor 14. The threading arm 11 is shown with its mouth between the thread guide tube 6.

In Fig. 3 sind drei Sektionen 10',10'' und 10''' des Absaugbalkens 10 gezeigt. Jede der Sektionen 10',10'' und 10''' ist mit einem Injektor und einem Absaugrohr 16 versehen. Der Übersicht wegen sind nur für die Sektionen 10' und 10''' Absaugrohre 16 bzw. 16' dargestellt. Zu je einem Absaugbalken 10 gehört ein Kolben 17 mit einem nicht gezeigten flexiblen Luftanschluss. Der Absaugbalken 10 ist in vertikaler Richtung, angedeutet durch einen Doppelpfeil, verschiebbar. Das Fadentrennelement 22 dient zur Freigabe der Fäden 7. Als Fadentrennelement 22 kann ein Lötkolben dienen.In Fig. 3, three sections 10 ', 10' 'and 10' '' of the suction bar 10 are shown. Each of the sections 10 ', 10' 'and 10' '' is provided with an injector and an exhaust pipe 16. For the sake of clarity, suction tubes 16 and 16 'are only shown for the sections 10' and 10 '' '. Each suction bar 10 includes a piston 17 with a flexible air connection, not shown. The suction bar 10 is displaceable in the vertical direction, indicated by a double arrow. The thread separating element 22 serves to release the threads 7. A soldering iron can serve as the thread separating element 22.

In Fig. 4 sind die am Schlitten 2 befestigten Fadentrenneinrichtung 9 und Abhebezylinder 23 erkennbar. Die durch den Absaugbalken 10 festgehaltenen Fäden 7 werden durch die schrittweise Verschiebung des Schlittens 2 einzeln von der Fadentrenneinrichtung 9 freigegeben. Das freigegebene Fadenstück 7 kann vom Einfädelarm 11 durch Ansaugen übernommen werden. Nach der Öffnung der Fadenklemme 5 durch den Abhebezylinder 23 kann der Einfädelarm 11 den Faden in die Fadenverbindungseinrichtung 8 ausführen. Der Abhebezylinder 23 ist für die Betätigung einer Fadenklemme 5; eine Abhebeplatte 24 für alle Fadenklemmen 5 vorgesehen.4 shows the thread separating device 9 and lifting cylinder 23 attached to the carriage 2. The threads 7 held by the suction bar 10 are released individually by the thread separating device 9 due to the gradual displacement of the carriage 2. The released thread piece 7 can be taken over by the threading arm 11 by suction. After the thread clamp 5 has been opened by the lifting cylinder 23, the threading arm 11 can feed the thread into the thread connecting device 8. The lifting cylinder 23 is for the actuation of a thread clamp 5; a lifting plate 24 is provided for all thread clamps 5.

Im Betrieb sind vor dem Start alle Fäden 7 durch die Fadenklemmen 5 gehalten und über die Fadenführerrohre 6 geführt. Die Fäden 7 hängen mit ihren freien Enden noch etwa 10 cm herunter. Der verbundene Faden 15 führt durch die Fadenverbindungseinrichtung 8 und am Fadenwächter 14 vorbei, beispielsweise zu einer nicht gezeigten Rundstrickmaschine. Beim Start der Vorrichtung schwenkt der Einfädelarm 11 zur Fadenklemme 5, und der Faden 7 wird vom Einfädelarm 11 angesogen. Die Fadenklemme 5 wird vom Kolben 17 pneumatisch angehoben; der Faden 7 wird in den Schlitz 12 gezogen. Gleichzeitig wird die Fadenverbindungseinrichtung 8, beispielsweise ein Fadenspleisser, betätigt und so der Faden von einem nicht gezeigten Gatter mit dem Faden 15 der Strickmaschine verbunden. Die Strickmaschine wird gestartet und nach einer vorgegebenen Zeit, entsprechend der Grösse des gewünschten Strickabschnittes, wieder gestoppt. Gleichzeitig wird der Kolben 17 entlüftet und dadurch der Faden 7 erneut durch die Fadenklemme 5 gehalten. Der Faden 7 wird durch den Fadenheber 18 vom Schlitz 12 in den Schlitz 13 gewechselt und nach der Fadenverbindung mittels der Fadentrenneinrichtung 9 getrennt. Als Fadentrenneinrichtung 9 kann eine Schere oder ein Lötkolben dienen. Die auf dem Schlitten 2 montierte Fadenverbindungseinrichtung 8 wird durch den Motor 3 zur nächsten Fadenstelle gefahren, wodurch der Zyklus mit dem Faden 7' von neuem beginnt.In operation, all threads 7 are held by thread clamps 5 and guided over thread guide tubes 6 before starting. The threads 7 hang down about 10 cm with their free ends. The connected thread 15 leads through the thread connecting device 8 and past the thread monitor 14, for example to a circular knitting machine, not shown. At the start of the device, the threading arm 11 pivots towards the thread clamp 5, and the thread 7 is drawn in by the threading arm 11. The thread clamp 5 is raised pneumatically by the piston 17; the thread 7 is pulled into the slot 12. At the same time, the thread connecting device 8, for example a thread splicer, is actuated and the thread is thus connected to the thread 15 of the knitting machine by a gate, not shown. The knitting machine is started and stopped again after a predetermined time, corresponding to the size of the desired knitting section. At the same time, the piston 17 is vented and the thread 7 is held again by the thread clamp 5. The thread 7 is changed from the slot 12 into the slot 13 by the thread lifter 18 and separated after the thread connection by means of the thread separating device 9. A pair of scissors or a soldering iron can serve as the thread separating device 9. The thread connecting device 8 mounted on the carriage 2 is moved by the motor 3 to the next thread location, as a result of which the cycle with the thread 7 ′ starts again.

Nach Beendigung aller Wechseloperationen fährt der Schlitten 2 in die Nullstellung. Nach dem Auswechseln der Vorlagen wird der Wechselautomat neu gestartet. Der Absaugbalken 10 wird angehoben und an die Fadenführerrohre 6 angekoppelt. Die Fadenabschnitte, welche zwischen Fadenklemme 5 und Fadenführerrohr 6 mehr oder weniger geordnet herumliegen, werden nun in das Fadenführerrohr 6 gesogen. Die Abhebeplatte 24 öffnet alle Fadenklemmen 5, wodurch der gemeinsame Durchzug aller Fäden so lange erfolgt, bis alle Verbindungsstellen alte/neue Vorlage durchgezogen sind. Die Abhebeplatte 24 entfernt sich. Die Fadenklemmen 5 sind dadurch in Funktion gesetzt. Der Absaugbalken 10 wird abgesenkt, wodurch die Bereitschaft für den schrittweisen Fadenwechsel erstellt ist. Nach Beendigung des Programmes fährt der Schlitten in die Ausgangsposition zurück.After all changing operations have been completed, the carriage 2 moves to the zero position. After changing the templates, the change machine is restarted. The suction bar 10 is raised and coupled to the thread guide tubes 6. The thread sections, which are arranged between thread clamp 5 and thread guide tube 6 more or less lying around are now sucked into the thread guide tube 6. The lifting plate 24 opens all the thread clamps 5, whereby all threads are pulled through until all the connection points old / new template are pulled through. The lifting plate 24 moves away. The thread clamps 5 are thereby set in function. The suction bar 10 is lowered, whereby the readiness for the gradual thread change is created. At the end of the program, the carriage returns to the starting position.

Die erfindungsgemässe Vorrichtung gestattet es, von einer grossen Anzahl von Spulen unbeaufsichtigt Fadenabzüge nach wählbaren Längen vorzunehmen. Unter Verwendung eines an sich bekannten Spleissers oder Knoters ist es erstmals möglich, je nach Auslegung der Automatengrösse auch mehr als 100 Vorlagespulen, deren Fäden vorsortiert in der Vorrichtung eingelegt sind, vollautomatisch miteinander zu verbinden.The device according to the invention makes it possible to carry out thread take-off according to selectable lengths from a large number of bobbins. Using a splicer or knotter known per se, for the first time it is possible, depending on the design of the machine size, to connect more than 100 supply spools, the threads of which are pre-sorted in the device, to one another fully automatically.

Es ist möglich, auch Spulenanzahl auf dem Automaten zu verarbeiten, welche unterhalb der Automatenauslegung liegen. Die Anzahl der Wechselpositionen kann dem Automaten vorgegeben werden.It is also possible to process the number of coils on the machine that are below the machine design. The number of change positions can be specified to the machine.

Claims (12)

  1. Device for automatically joining threads, consisting of a frame (1) with a plurality of thread clamps (5) and a carriage (2) that can be moved horizontally step-wise, on which a thread joining system (8) is provided, characterized in that, with each thread clamp (5) there is associated, at a certain distance vertically above the thread run, a thread guide tube (6) which is in communication with a vertically movable vacuum duct (10).
  2. Device according to claim 1, characterized in that the thread guide tube (6) is equipped with a thread guide eyelet at the thread entry and with a rubber diaphragm of the thread exit.
  3. Device according to claim 1, characterized in that in the interior of the vacuum duct (10) vacuum blocks (10, 10', 10''') arranged segment-wise are provided.
  4. Device according to claim 1, characterized in that a lifting jack (23) is provided on the carriage (2).
  5. Device according to claim 1, characterized in that a lifting plate (24) is provided on the frame (1).
  6. Device according to claim 1, characterized in that a threading arm (11) driven by an air cylinder is provided on the carriage (2) and communicates with the thread guide rail (25).
  7. Device according to claim 6, characterized in that a template is provided for controlling the threading arm (11).
  8. Device according to claim 1, charactrized in that a thread severing device (9) is provided on the carriage (2).
  9. Device according to claim 1, characterized in that a thread marker (12) is provided on the carriage (2).
  10. Process for the automatic joining of threads by means of a device according to claims 1 to 9, characterized in that the vacuum duct (10) docks at the thread guide tubes (6) after a pattern change, and all thread clamps (5) are opened by the lifting plate (24).
  11. Process according to claim 10, characterized in that the thread clamps (5) are activated after the departure of the vacuum duct (10.
  12. Application of the device according to claims 1 to 9 to the joining of threads for a knitting test.
EP89910063A 1989-09-19 1989-09-19 Device and process for automatically joining threads Expired - Lifetime EP0452327B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1989/000172 WO1991004217A1 (en) 1989-09-19 1989-09-19 Device and process for automatically joining threads

Publications (2)

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EP0452327A1 EP0452327A1 (en) 1991-10-23
EP0452327B1 true EP0452327B1 (en) 1994-02-16

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EP89910063A Expired - Lifetime EP0452327B1 (en) 1989-09-19 1989-09-19 Device and process for automatically joining threads

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US (1) US5297323A (en)
EP (1) EP0452327B1 (en)
JP (1) JPH07110745B2 (en)
KR (1) KR920702843A (en)
DE (1) DE58907018D1 (en)
WO (1) WO1991004217A1 (en)

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EP0591570B1 (en) * 1992-10-09 1998-06-17 ALKOTEX S.r.l. Yarn working machine, particularly embroidering machine with yarn changing apparatus
DE69419858T2 (en) * 1993-08-26 2000-04-13 Murata Kikai K.K., Kyoto Thread winding transport system
US5603462A (en) * 1993-09-09 1997-02-18 Melco Industries, Inc. Changing threads in a sewing machine
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Also Published As

Publication number Publication date
DE58907018D1 (en) 1994-03-24
WO1991004217A1 (en) 1991-04-04
EP0452327A1 (en) 1991-10-23
JPH04503346A (en) 1992-06-18
JPH07110745B2 (en) 1995-11-29
US5297323A (en) 1994-03-29
KR920702843A (en) 1992-10-28

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