EP0411382B1 - Cops-preparation device to wind up the free thread end at the top of the cops - Google Patents

Cops-preparation device to wind up the free thread end at the top of the cops Download PDF

Info

Publication number
EP0411382B1
EP0411382B1 EP90113653A EP90113653A EP0411382B1 EP 0411382 B1 EP0411382 B1 EP 0411382B1 EP 90113653 A EP90113653 A EP 90113653A EP 90113653 A EP90113653 A EP 90113653A EP 0411382 B1 EP0411382 B1 EP 0411382B1
Authority
EP
European Patent Office
Prior art keywords
bobbin
thread
suction
preparation device
winding
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
EP90113653A
Other languages
German (de)
French (fr)
Other versions
EP0411382A1 (en
Inventor
Helmuth Hensen
Ulrich Wirtz
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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 W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0411382A1 publication Critical patent/EP0411382A1/en
Application granted granted Critical
Publication of EP0411382B1 publication Critical patent/EP0411382B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/086—Preparing supply packages
    • 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 cop preparation device according to the preamble of the first claim.
  • the beginning of the thread is searched for by means of a suction slot arranged in a suction tube, sucked in, guided along the suction slot to the next station, cut there and placed in the head sleeve.
  • the individual tasks are carried out at different locations, but with the same cycle time.
  • the long suction slot results in very high air consumption and poor suction.
  • an additional blow nozzle for Need to raise the thread is required.
  • an air passage through the carrier into the interior of the head sleeve is required so that the thread start can be sucked into the sleeve through a further suction nozzle arranged below the carrier. The latter can be avoided if the beginning of the thread is placed on the tip of the bobbin.
  • a cop is turned horizontally in the unwinding direction of the thread by two rollers that can be rotated in the same direction.
  • a pneumatic suction device is arranged between these rollers and is intended to grasp and suck in the beginning of the thread.
  • a sensor arranged in the suction device detects when the backward winding applied to the surface of the bobbin has been unwound and the thread is pulled off the front bobbin cone. After actuating a cutting device, the direction of rotation of the rollers is reversed after the cop has been displaced in the longitudinal direction along the rollers so far that a thread catcher arranged in the suction nozzle faces the sleeve tip of the cop when winding the thread beginning.
  • This device has a controllable drive device for rotating the respective cop, a suction pipe with a suction slot facing the cop and extending along the suction pipe, a thread separating device, a thread guide and a sensor for checking the detection of the beginning of the thread.
  • the object of the invention is to propose a cop preparation device with which a high quality of preparation is ensured with low energy consumption.
  • the dimensions of the suction slot are limited to the absolutely necessary dimension. This minimizes air and thus energy consumption.
  • the thread In connection with the arrangement of the suction slit along a suction pipe, the thread immediately touches the upper end of the suction slit after it is gripped. As a result, this upper end of the suction slot can also take over the function of guiding the thread when it is subsequently wound onto the tube tip.
  • the adjustable thread brake ensures that the applied winding is just so tight that it does not fall off again during the transport of the cop, but can be detected perfectly in the winding unit.
  • the knocking off of entire thread turns from the head of the head can be avoided in that the thread withdrawal is limited by the duration of the rotation of the head.
  • the cop preparation device according to the invention can be easily adjusted to different cop length. Simultaneously with this setting, it is also possible to adjust the contact point to the tip of the head, so that the head can be tilted when turning so that the rotary movement of the driven pallet is reliably transmitted by increasing the frictional force between the head sleeve and the arbor.
  • the tapering of the effective cross section of the suction pipe along the suction slot leads to the fact that the suction force distribution along the suction slot is approximately constant. If necessary, an exchangeable plate can be arranged in the suction pipe if the suction slot length is changed frequently and significantly.
  • the thread separating device and the thread brake are actuated by a sensor which monitors the detection of the beginning of the thread, it is advantageous to design at least one of the two so that it blocks the suction air path in the closed position. In this way, the consumption of suction air is reduced to the absolute minimum. If the thread separating device and the thread brake block the suction air path together, it is not necessary to make each of the two barriers very tight.
  • the possible change in the distance between the thread brake and the separating device additionally permits regulation of the number of turns which are applied to the tip of the head. This measure, in conjunction with the regulation of the thread tension when the windings are applied to the tip of the head, optimally adapts to the requirements resulting from the type of thread and the type of detection of the beginning of the thread in the winding unit.
  • Cops prepared in the cop preparation device according to the invention are particularly suitable for winding machines in whose unwinding position there are air nozzles for generating an upward air flow surrounding the cop.
  • cop preparation device is also particularly suitable for transport systems in which the cops are plugged onto mandrels of pallets with which they are transported together along the transport path.
  • the drawing shows a perspective view of the cop preparation device according to the invention.
  • a cop 5 is fed upright on the arbor of a pallet 4 along a transport path 1 of the cop preparation device.
  • the pallet 4 is transported by means of a conveyor belt 2, the guidance being carried out by rails 3 and 3 ′, which, as in the present example, can be angled.
  • the pallet 4 is positioned on the cop preparation device by a pressure roller 14 and two pulleys 19, of which only one can be seen in the drawing, in such a way that a suction slot 9 of a transparently illustrated suction tube 8 runs close to the surface of the cop 5.
  • the pressure roller 14 is mounted on a swivel arm 15 which is supported by a swivel pin 16.
  • a drive belt 20 is placed around the two pulleys 19 and a drive roller 17. This is a possible drive variant for the pallet 4, which transmits the rotary movement to the cop 5.
  • the drive roller 17 is driven by a motor 18.
  • the two pulleys 19 and the drive roller 17 are in one Pivot plate 21 mounted, which is pivotable by means of a pivot pin 22.
  • the pressure roller 14 and the pulleys 19 are arranged in the form of a triangle, they can fix the base plate of the pallet 4 exactly in its position.
  • recesses 6 and 6 ' are provided in the rails 3 and 3' for the pressure roller 14 and the pulleys 19.
  • a signal is given to a central control unit 23 through which the individual work steps of the cop preparation device are initiated .
  • the motor 18 is put into operation via a control line 18 ′, as a result of which it drives the drive belt 20 and thus the foot of the pallet 4 via the drive roller 17.
  • the pressure roller 14 and the pulleys 19 are designed as flanged rollers with an opposite arrangement of the flanges, whereby the pallet 4 is tilted.
  • the tip of the head 5 ' is deflected in the opposite direction by a leading edge 48 formed on a slide 11. In this way, the canting between the cop 5 and the pallet 4 increases the friction between the cop sleeve and the arbor.
  • valves (not shown) are opened by the central control unit 23, which release the air supply from a compressed air source to air lines 35 and 46.
  • pistons 32 and 43 are displaced within pneumatic cylinders 33 and 44 in such a way that they open a thread brake 25 and a separating device 39.
  • the longitudinal movement of the piston 32 is transmitted via a pivot lever 31 to a pivot pin 30 to which a pivotable leg 28 of the thread brake 25 is attached.
  • the longitudinal movement of the piston 43 is transmitted via a connecting piece 42 and a swivel arm 49 to a movable scissor arm 41 of the separating device 39, whereby this movable scissor arm 41 is pivoted about a fixed pin 40.
  • the suction air path of the suction pipe 8 is opened by opening the thread brake 25 and the separating device 39.
  • the suction pipe 8 is connected to an air vacuum source, not shown here, for example in the form of a suction crossmember of a winding machine.
  • the thread beginning of the thread 7 is carried along by the suction air flow within the suction tube 8 and reaches a sensor which consists of a light source 36 and a photodiode 37. Immediately after the beginning of the thread has broken through the light barrier formed by the light source 36 and the photodiode 37, a success signal is given to the central control unit 23 via the line 37 '. Since the arrangement of the upper end of the suction slot 9, the thread length sucked in is dependent on the rotational movement of the cop 5, the further steps can be coordinated very precisely in time without too much thread material being drawn off, which only remains as waste after the separation.
  • the central control unit 23 stops the motor 18 and changes its direction of rotation via the line 18 'after receiving the said success signal.
  • the valves, not shown, are also opened and the air lines 34 and 46 are connected to a compressed air source.
  • the pistons 32 and 43 shifted, whereby the thread brake 25 and the separating device 39 are closed.
  • the pivotable leg 28 lies on the leg 27, which is connected at its front end to an adjustable spring 26.
  • the thread 7 located in the suction tube 8 is clamped.
  • the suction air path in the suction pipe 8 is blocked by the shut-off profile 29.
  • the movable scissor leg 41 of the separating device 39 is pivoted against a fixedly arranged scissor leg 47, as a result of which the thread 7 is cut to a precisely defined length.
  • the suction air path is also blocked at this point.
  • the thread piece remaining in the suction tube is now wound onto the sleeve tip 5 'of the cop.
  • the winding tension is determined by the thread brake 25.
  • the adjustable spring 26 ensures that the optimal winding tension is produced for the respective thread material.
  • the horizontal pipe section of the suction pipe 8 is designed as a telescopically displaceable pipe section, as a result of which the distance between the thread brake 25 and the separating device 39 can be regulated.
  • the height at which the thread start is wound up is also determined in accordance with the respective cop length. It is neither necessary to move the cop in its longitudinal axis for this winding process, nor to insert an additional movable thread guide element into the thread path.
  • the thread brake 25 and the separating device 39 are each surrounded by a housing 24 and 38, respectively. This prevents additional air inlets.
  • the bolts 30 and 40 which emerge from the housings can be easily sealed off from these housings.
  • a plate 13 which can be inserted into the suction tube, for example, through a removable suction tube base 10, for example when it is pivoted out of the area of the transport path 1, tapers the effective cross section of the suction tube in the area of the suction slot against the suction direction. This makes it possible to design the flow conditions in the suction pipe 8 in the area of the suction slot in such a way that approximately the same pressure conditions prevail at every point of the suction slot 9.
  • This plate 13 can be replaced if the cop preparation device is set to a different cop length, that is to say the length of the suction slot 9 is adjusted by the slider 11.
  • the cycle time for the treatment of a cop can be reduced in that the thread search process is terminated immediately after the success signal from the sensor.
  • a further shortening is still possible in that the rotational speed for winding the beginning of the thread on the Sleeve tip is selected higher than the rotational speed for the search process.

Description

Die Erfindung betrifft eine Kopsvorbereitungseinrichtung gemäß dem Oberbegriff des ersten Anspruches.The invention relates to a cop preparation device according to the preamble of the first claim.

Beim Vorbereiten von Kopsen für den Abspulprozeß in einer Spulmaschine kommt es darauf an, möglichst ohne Beschädigung der Oberfläche des Wickels das Garnende so freizulegen, daß es in der Abspulposition erfaßbar und den entsprechenden Aggregaten der Spulstelle vorlegbar ist.When preparing cops for the unwinding process in a winding machine, it is important to uncover the end of the yarn without damaging the surface of the winding so that it can be detected in the unwinding position and presented to the corresponding units of the winding unit.

Vorrichtungen, die den Fadenanfang auf der Oberfläche von Kopsen suchen und dann für den Abspulvorgang an einer definierten Stelle bereitlegen, sind bereits bekannt.Devices which search for the beginning of the thread on the surface of cops and then prepare them for the unwinding process at a defined point are already known.

Gemäß der DE-A-36 02 002 wird nach vorherigen Vorbereitungsschritten auf der Kopsoberfläche mittels eines in einem Saugrohr angeordneten Saugschlitzes der Fadenanfang gesucht, eingesaugt, entlang des Saugschlitzes bis zur nächsten Station geführt, dort geschnitten und in die Kopshülse verbracht. Die einzelnen Verrichtungen werden an unterschiedlichen Orten, aber mit je gleicher Taktzeit durchgeführt. Durch den langen Saugschlitz ergibt sich ein sehr hoher Luftverbrauch und eine schlechte Saugwirkung. Gegebenenfalls ist eine zusätzliche Blasdüse zum Anheben des Fadens notwendig. Außerdem ist ein Luftdurchtritt durch den Träger bis in das Innere der Kopshülse erforderlich, damit durch eine unterhalb des Trägers angeordnete weitere Saugdüse der Fadenanfang in die Hülse gesaugt werden kann. Letzteres kann vermieden werden, wenn der Fadenanfang auf der Hülsenspitze des Kopses abgelegt wird.According to DE-A-36 02 002, prior to the preparatory steps on the surface of the cop, the beginning of the thread is searched for by means of a suction slot arranged in a suction tube, sucked in, guided along the suction slot to the next station, cut there and placed in the head sleeve. The individual tasks are carried out at different locations, but with the same cycle time. The long suction slot results in very high air consumption and poor suction. If necessary, an additional blow nozzle for Need to raise the thread. In addition, an air passage through the carrier into the interior of the head sleeve is required so that the thread start can be sucked into the sleeve through a further suction nozzle arranged below the carrier. The latter can be avoided if the beginning of the thread is placed on the tip of the bobbin.

Eine derartige Vorrichtung ist in der DE-A-18 06 672 beschrieben. Bei dieser Lösung wird ein Kops liegend durch zwei gleichsinnig drehbare Walzen in Abwickelrichtung des Fadens gedreht. Zwischen diesen Walzen ist eine pneumatische Saugvorrichtung angeordnet, die den Fadenanfang erfassen und einsaugen soll. Ein in der Saugvorrichtung angeordneter Sensor erkennt, wenn die mit großer Steigung auf der Kopsoberfläche aufgebrachte Hinterwindung abgewickelt ist und der Faden vom vorderen Kopskegel abgezogen wird. Nach Betätigung einer Schneidvorrichtung wird die Drehrichtung der Walzen umgekehrt, nachdem der Kops in seiner Längsrichtung entlang der Walzen so weit verschoben wurde, daß ein in der Saugdüse angeordneter Fadenfänger beim Aufwickeln des Fadenanfanges der Hülsenspitze des Kopses gegenübersteht. Dieses Verschieben ist deshalb notwendig, weil durch die Gestaltung der Saugvorrichtung der Faden immer gerade dort in den zwischen den beiden Walzen gebildeten Saugschlitz einläuft, wo er vom Kops abgezogen wird. Um den Faden zu fangen, muß also der Fadenfänger im Bereich der Kopsbewicklung liegen. Eine solche Kopsvorbereitungseinrichtung ist nicht geeignet, Kopse vorzubereiten, während sie aufrechtstehend auf Dorne aufgesteckt sind.Such a device is described in DE-A-18 06 672. In this solution, a cop is turned horizontally in the unwinding direction of the thread by two rollers that can be rotated in the same direction. A pneumatic suction device is arranged between these rollers and is intended to grasp and suck in the beginning of the thread. A sensor arranged in the suction device detects when the backward winding applied to the surface of the bobbin has been unwound and the thread is pulled off the front bobbin cone. After actuating a cutting device, the direction of rotation of the rollers is reversed after the cop has been displaced in the longitudinal direction along the rollers so far that a thread catcher arranged in the suction nozzle faces the sleeve tip of the cop when winding the thread beginning. This shifting is necessary because the design of the suction device means that the thread always runs into the suction slot formed between the two rollers where it is pulled off the cop. In order to catch the thread, the thread catcher must lie in the area of the bobbin winding. Such a cop preparation device is not suitable for preparing cops while they are placed upright on mandrels.

Es wurde auch schon eine gattungsgemäße Vorrichtung vorgeschlagen, bei der die Kopse aufrechtstehend auf Dorne aufgesteckt sind. Diese Vorrichtung besitzt eine steuerbare Antriebseinrichtung zum Drehen des jeweiligen Kopses, ein Saugrohr mit einem dem Kops zugewandten sich entlang des Saugrohres erstreckenden Saugschlitz, eine Fadentrenneinrichtung, ein Fadenleitorgan und einen Sensor für die Kontrolle der Erfassung des Fadenanfanges.There has also been proposed a generic device in which the cops are placed upright on mandrels. This device has a controllable drive device for rotating the respective cop, a suction pipe with a suction slot facing the cop and extending along the suction pipe, a thread separating device, a thread guide and a sensor for checking the detection of the beginning of the thread.

Aufgabe der Erfindung ist es, eine Kopsvorbereitungseinrichtung vorzuschlagen, mit der eine hohe Qualität der Vorbereitung bei niedrigem Energieverbrauch gesichert wird.The object of the invention is to propose a cop preparation device with which a high quality of preparation is ensured with low energy consumption.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Ansprüches 1 gelöst.This object is achieved by the features of claim 1.

Durch die Anordnung des oberen Endes des Saugschlitzes im Bereich der bewicklungsfreien Spitze der Kopshülse ist der Saugschlitz in seinen Dimensionen auf das unbedingt erforderliche Maß begrenzt. Dadurch wird der Luft- und damit Energieverbrauch minimiert. In Verbindung mit der Anordnung des Saugschlitzes entlang eines Saugrohres legt sich der Faden unmittelbar nach seinem Erfassen bereits an das obere Ende des Saugschlitzes an. Dadurch kann dieses obere Ende des Saugschlitzes auch gleichzeitig die Funktion der Führung des Fadens übernehmen, wenn dieser anschließend auf die Hülsenspitze gewickelt wird. Die einstellbare Fadenbremse gewährleistet dabei, daß die aufgebrachte Wicklung gerade so straff ist, daß sie während des Transportes des Kopses nicht wieder abfällt, in der Spulstelle aber einwandfrei erfaßt werden kann.Due to the arrangement of the upper end of the suction slot in the area of the winding-free tip of the cop sleeve, the dimensions of the suction slot are limited to the absolutely necessary dimension. This minimizes air and thus energy consumption. In connection with the arrangement of the suction slit along a suction pipe, the thread immediately touches the upper end of the suction slit after it is gripped. As a result, this upper end of the suction slot can also take over the function of guiding the thread when it is subsequently wound onto the tube tip. The adjustable thread brake ensures that the applied winding is just so tight that it does not fall off again during the transport of the cop, but can be detected perfectly in the winding unit.

Gegenüber bekannten Vorrichtungen, bei denen der Saugschlitz über die Kopsspitze hinwegführt, kann bei der erfindungsgemäßen Anordnung des Saugschlitzes das Abschlagen von ganzen Fadenwindungen von der Kopsspitze dadurch vermieden werden, daß der Fadenabzug durch die Dauer der Drehung des Kopses begrenzt wird.Compared to known devices in which the suction slit leads over the tip of the head, in the arrangement of the suction slit according to the invention, the knocking off of entire thread turns from the head of the head can be avoided in that the thread withdrawal is limited by the duration of the rotation of the head.

Die Erfindung ist durch die Merkmale der Ansprüche 2 bis 9 vorteilhaft weitergebildet.The invention is advantageously further developed by the features of claims 2 to 9.

Durch die Verstellbarkeit der Länge des Saugschlitzes ist die erfindungsgemäße Kopsvorbereitungseinrichtung problemlos auf unterschiedliche Kopslängen einstellbar. Gleichzeitig mit dieser Einstellung ist es auch möglich, den Kontaktpunkt zur Kopsspitze anzupassen, wodurch der Kops beim Drehen so verkantet werden kann, daß sich die Drehbewegung von der angetriebenen Palette durch Erhöhung der Reibungskraft zwischen Kopshülse und Aufsteckdorn sicher überträgt.Due to the adjustability of the length of the suction slot, the cop preparation device according to the invention can be easily adjusted to different cop length. Simultaneously with this setting, it is also possible to adjust the contact point to the tip of the head, so that the head can be tilted when turning so that the rotary movement of the driven pallet is reliably transmitted by increasing the frictional force between the head sleeve and the arbor.

Die Verjüngung des wirksamen Querschnittes des Saugrohres entlang des Saugschlitzes führt dazu, daß die Saugkraftverteilung längs des Saugschlitzes etwa gleichbleibend ist. Erforderlichenfalls kann dafür im Saugrohr eine austauschbare Platte angeordnet werden, wenn die Saugschlitzlänge oft und erheblich verändert wird.The tapering of the effective cross section of the suction pipe along the suction slot leads to the fact that the suction force distribution along the suction slot is approximately constant. If necessary, an exchangeable plate can be arranged in the suction pipe if the suction slot length is changed frequently and significantly.

Da durch einen Sensor, der die Erfassung des Fadenanfanges überwacht, die Fadentrenneinrichtung und die Fadenbremse betätigt werden, ist es vorteilhaft, zumindest eine von beiden so zu gestalten, daß sie in geschlossener Stellung den Saugluftweg absperrt. Auf diese Weise wird der Saugluftverbrauch auf das unbedingt erforderliche Maß reduziert. Wenn Fadentrenneinrichtung und Fadenbremse gemeinsam den Saugluftweg absperren, ist es nicht notwendig, jede der beiden Absperrungen sehr dicht zu gestalten.Since the thread separating device and the thread brake are actuated by a sensor which monitors the detection of the beginning of the thread, it is advantageous to design at least one of the two so that it blocks the suction air path in the closed position. In this way, the consumption of suction air is reduced to the absolute minimum. If the thread separating device and the thread brake block the suction air path together, it is not necessary to make each of the two barriers very tight.

Die mögliche Veränderung des Abstandes zwischen der Fadenbremse und der Trenneinrichtung gestattet zusätzlich eine Regulierung der Anzahl der Windungen, die auf der Kopsspitze aufgebracht werden. Diese Maßnahme gewährleistet in Verbindung mit der Regulierung der Fadenspannung beim Aufbringen der Windungen auf die Kopsspitze eine optimale Anpassung an die Erfordernisse, die sich durch die Garnart und die Art der Erfassung des Fandenanfanges in der Spulstelle ergeben.The possible change in the distance between the thread brake and the separating device additionally permits regulation of the number of turns which are applied to the tip of the head. This measure, in conjunction with the regulation of the thread tension when the windings are applied to the tip of the head, optimally adapts to the requirements resulting from the type of thread and the type of detection of the beginning of the thread in the winding unit.

In der erfindungsgemäßen Kopsvorbereitungseinrichtung vorbereitete Kopse sind besonders geeignet für Spulmaschinen, in deren Abspulposition Luftdüsen zum Erzeugen einer den Kops umgebenden nach oben gerichteten Luftströmung vorhanden sind.Cops prepared in the cop preparation device according to the invention are particularly suitable for winding machines in whose unwinding position there are air nozzles for generating an upward air flow surrounding the cop.

Eine besondere Eignung der erfindungsgemäßen Kopsvorbereitungseinrichtung ergibt sich auch für Transportsysteme, in denen die Kopse auf Dorne von Paletten aufgesteckt sind, mit denen sie gemeinsam entlang der Transportbahn transportiert werden.The cop preparation device according to the invention is also particularly suitable for transport systems in which the cops are plugged onto mandrels of pallets with which they are transported together along the transport path.

Die Erfindung soll nachstehend anhand eines Auführungsbeispieles näher erläutert werden. Die Zeichnung zeigt eine perspektivische Ansicht der erfindungsgemäßen Kopsvorbereitungseinrichtung.The invention will be explained in more detail below with the aid of an exemplary embodiment. The drawing shows a perspective view of the cop preparation device according to the invention.

Ein Kops 5 wird aufrechtstehend auf dem Aufsteckdorn einer Palette 4 entlang einer Transportbahn 1 der Kopsvorbereitungseinrichtung zugeführt. Der Transport der Palette 4 erfolgt mittels eines Transportbandes 2, wobei die Führung durch Schienen 3 und 3'erfolgt, die, wie im vorliegenden Beispiel, abgewinkelt gestaltet sein können.A cop 5 is fed upright on the arbor of a pallet 4 along a transport path 1 of the cop preparation device. The pallet 4 is transported by means of a conveyor belt 2, the guidance being carried out by rails 3 and 3 ′, which, as in the present example, can be angled.

An der Kopsvorbereitungseinrichtung wird die Palette 4 durch eine Andruckrolle 14 und zwei Riemenscheiben 19, von denen nur eine in der Zeichnung erkennbar ist, so positioniert, daß ein Saugschlitz 9 eines transparent dargestellten Saugrohres 8 dicht neben der Oberfläche des Kopses 5 verläuft. Die Andruckrolle 14 ist auf einem Schwenkarm 15 gelagert, der von einem Schwenkbolzen 16 getragen wird.The pallet 4 is positioned on the cop preparation device by a pressure roller 14 and two pulleys 19, of which only one can be seen in the drawing, in such a way that a suction slot 9 of a transparently illustrated suction tube 8 runs close to the surface of the cop 5. The pressure roller 14 is mounted on a swivel arm 15 which is supported by a swivel pin 16.

Um die beiden Riemenscheiben 19 und eine Antriebsrolle 17 ist ein Treibriemen 20 gelegt. Dies ist eine mögliche Antriebsvariante für die Palette 4, die die Drehbewegung auf den Kops 5 überträgt. Die Antriebsrolle 17 wird von einem Motor 18 angetrieben. Die beiden Riemenscheiben 19 und die Antriebsrolle 17 sind in einer Schwenkplatte 21 gelagert, die mittels eines Schwenkbolzens 22 verschwenkbar ist.A drive belt 20 is placed around the two pulleys 19 and a drive roller 17. This is a possible drive variant for the pallet 4, which transmits the rotary movement to the cop 5. The drive roller 17 is driven by a motor 18. The two pulleys 19 and the drive roller 17 are in one Pivot plate 21 mounted, which is pivotable by means of a pivot pin 22.

Durch einen in der Zeichnung nicht dargestellten Sensor, der stromauf an der Transportbahn 1 angeordnet ist, wird die Ankunft einer Palette 4 mit Kops 5 erkannt. Dieser Sensor steuert dann entsprechend zeitverzögert nicht dargestellte Verschwenkmechanismen, die über die Drehbolzen 16 und 22 den Schwenkarm 15 und die Schwenkplatte 21 in Richtung zur Transportbahn 1 verschwenken. Als Verschwenkmechanismen kommen zum Beispiel Kurvenscheibentriebe oder Drehsolenoide in Frage.The arrival of a pallet 4 with cops 5 is detected by a sensor, not shown in the drawing, which is arranged upstream on the transport path 1. This sensor then controls, according to a time delay, pivoting mechanisms, not shown, which pivot the pivoting arm 15 and the pivoting plate 21 in the direction of the transport path 1 via the pivot pins 16 and 22. Cam mechanisms or rotary solenoids can be used as pivot mechanisms, for example.

Da die Andruckrolle 14 und die Riemenscheiben 19 in Form eines Dreieckes angeordnet sind, können sie die Grundplatte der Palette 4 in ihrer Lage genau fixieren. Dabei sind für die Andruckrolle 14 und die Riemenscheiben 19 Aussparungen 6 und 6' in den Schienen 3 und 3' vorgesehen.Since the pressure roller 14 and the pulleys 19 are arranged in the form of a triangle, they can fix the base plate of the pallet 4 exactly in its position. In this case, recesses 6 and 6 'are provided in the rails 3 and 3' for the pressure roller 14 and the pulleys 19.

Entweder durch das Ankunftssignal des nicht dargestellten stromauf an der Transportbahn 1 angeordneten Sensors oder einen Schaltmechanismus, der beim Verschwenken des Schwenkarmes 15 und der Schwenkplatte 21 betätigt wird, wird an eine zentrale Steuereinheit 23 ein Signal gegeben, durch welches die einzelnen Arbeitsschritte der Kopsvorbereitungseinrichtung eingeleitet werden.Either by the arrival signal of the sensor (not shown) arranged upstream on the transport track 1 or a switching mechanism which is actuated when the swivel arm 15 and the swivel plate 21 are swiveled, a signal is given to a central control unit 23 through which the individual work steps of the cop preparation device are initiated .

Über eine Steuerleitung 18' wird der Motor 18 in Betrieb gesetzt, wodurch er über die Antriebsrolle 17 den Treibriemen 20 und damit den Fuß der Palette 4 antreibt.The motor 18 is put into operation via a control line 18 ′, as a result of which it drives the drive belt 20 and thus the foot of the pallet 4 via the drive roller 17.

Um die Drehbewegung der Palette 4 wirksam auf den Kops 5 übertragen zu können, auch wenn der Kops mit seiner Hülse relativ locker auf dem Aufsteckdorn der Palette aufsitzt, ist es vorteilhaft, den Kops 5 gegenüber dem Aufsteckdorn zu verkanten. Das wird im vorliegenden Ausführungsbeispiel dadurch erreicht, daß die Andruckrolle 14 und die Riemenscheiben 19 als Spurkranzrollen mit gegenüberliegender Anordnung der Spurkränze gestaltet sind, wodurch die Palette 4 verkantet wird. Gleichzeitig wird die Kopsspitze 5' durch eine an einem Schieber 11 angeformte Auflaufkante 48 in der entgegengesetzten Richtung ausgelenkt. Auf diese Weise wird das die Reibung zwischen Kopshülse und Aufsteckdorn erhöhende Verkanten zwischen Kops 5 und Palette 4 erreicht.In order to be able to effectively transmit the rotary movement of the pallet 4 to the cop 5, even if the cop sits relatively loosely on the plug-on mandrel of the pallet with its sleeve, it is advantageous to tilt the cop 5 relative to the plug-on mandrel. This is achieved in the present exemplary embodiment by that the pressure roller 14 and the pulleys 19 are designed as flanged rollers with an opposite arrangement of the flanges, whereby the pallet 4 is tilted. At the same time, the tip of the head 5 'is deflected in the opposite direction by a leading edge 48 formed on a slide 11. In this way, the canting between the cop 5 and the pallet 4 increases the friction between the cop sleeve and the arbor.

Durch die zentrale Steuereinheit 23 werden neben der Inbetriebnahme des Motors 18 nicht dargestellte Ventile geöffnet, die die Luftzufuhr von einer Druckluftquelle zu Luftleitungen 35 und 46 freigeben. Dadurch werden Kolben 32 und 43 innerhalb von Pneumatikzylindern 33 und 44 so verschoben, daß sie die Öffnung einer Fadenbremse 25 und einer Trenneinrichtung 39 bewirken. Dabei wird die Längsbewegung des Kolbens 32 über einen Schwenkhebel 31 auf einen Drehbolzen 30 übertragen, an dem ein verschwenkbarer Schenkel 28 der Fadenbremse 25 befestigt ist. Die Längsbewegung des Kolbens 43 wird über ein Verbindungsstück 42 und einen Schwenkarm 49 auf einen beweglichen Scherenschenkel 41 der Trenneinrichtung 39 übertragen, wodurch dieser bewegliche Scherenschenkel 41 um einen festen Bolzen 40 verschwenkt wird.In addition to the start-up of the motor 18, valves (not shown) are opened by the central control unit 23, which release the air supply from a compressed air source to air lines 35 and 46. As a result, pistons 32 and 43 are displaced within pneumatic cylinders 33 and 44 in such a way that they open a thread brake 25 and a separating device 39. The longitudinal movement of the piston 32 is transmitted via a pivot lever 31 to a pivot pin 30 to which a pivotable leg 28 of the thread brake 25 is attached. The longitudinal movement of the piston 43 is transmitted via a connecting piece 42 and a swivel arm 49 to a movable scissor arm 41 of the separating device 39, whereby this movable scissor arm 41 is pivoted about a fixed pin 40.

Da der verschwenkbare Schenkel 28 der Fadenbremse 25 ein Absperrprofil 29 besitzt und der bewegliche Scherenschenkel 41 ebenfalls als Absperrprofil geformt ist, wird durch das Öffnen der Fadenbremse 25 und der Trenneinrichtung 39 der Saugluftweg des Saugrohres 8 geöffnet. Das Saugrohr 8 ist dabei mit einer hier nicht dargestellten Luftunterdruckquelle, zum Beispiel in Form einer Saugtraverse einer Spulmaschine, verbunden.Since the pivotable leg 28 of the thread brake 25 has a shut-off profile 29 and the movable scissor leg 41 is also shaped as a shut-off profile, the suction air path of the suction pipe 8 is opened by opening the thread brake 25 and the separating device 39. The suction pipe 8 is connected to an air vacuum source, not shown here, for example in the form of a suction crossmember of a winding machine.

Durch den jetzt im Saugrohr 8 anliegenden Unterdruck wird durch die einzige Öffnung des Saugrohres 8 zur Umgebung, den Saugschlitz 9, Luft angesaugt.Due to the negative pressure now present in the suction pipe 8, air is sucked in through the only opening of the suction pipe 8 to the environment, the suction slot 9.

Da, wie bereits beschrieben, durch die zentrale Steuereinheit 23 der Motor 18 und damit der Antrieb der Palette 4 und des Kopses 5 entgegen der Aufwickelrichtung des Fadens auf dem Kops eingeleitet wurde, wird der auf dem Umfang des Kopsmantels liegende Anfang des Fadens 7 durch den Saugschlitz 9 in das Saugrohr 8 gezogen. Da die Luftströmung im Saugrohr parallel zum Verlauf des Saugschlitzes 9 ausgerichtet ist, wird der Faden 7 unmittelbar nach seinem Erfassen im Saugschlitz 9 um dessen oberes Ende gelegt. Dieses obere Ende des Saugschlitzes 9 wird durch die Unterkante eines Schiebers 11 gebildet, der innerhalb von Führungen 12 entlang des Saugschlitzes 9 verschoben werden kann. Dieser Schieber 11 ist entweder so straff in den Führungen 12 gehalten, daß er durch die Fadenzugkraft nicht verschoben werden kann oder zum Beispiel durch eine Befestigungsschraube in seiner jeweiligen der Kopslänge entsprechenden Lage fixiert.Since, as already described, the motor 18 and thus the drive of the pallet 4 and the bobbin 5 was initiated by the central control unit 23 against the winding direction of the thread on the bobbin, the beginning of the thread 7 lying on the circumference of the bobbin shell is replaced by the Suction slot 9 drawn into the suction pipe 8. Since the air flow in the suction pipe is aligned parallel to the course of the suction slot 9, the thread 7 is placed around its upper end in the suction slot 9 immediately after it is detected. This upper end of the suction slot 9 is formed by the lower edge of a slide 11 which can be moved within guides 12 along the suction slot 9. This slide 11 is either held so tightly in the guides 12 that it cannot be moved by the thread tension or, for example, fixed in its position corresponding to the length of the cops by a fastening screw.

Der Fadenanfang des Fadens 7 wird von der Saugluftströmung innerhalb des Saugrohres 8 mitgenommen und gelangt zu einem Sensor, der aus einer Lichtquelle 36 und einer Fotodiode 37 besteht. Unmittelbar nachdem der Fadenanfang die durch die Lichtquelle 36 und die Fotodiode 37 gebildete Lichtschranke durchbrochen hat, wird über die Leitung 37' ein Erfolgssignal an die zentrale Steuereinheit 23 gegeben. Da durch die Anordnung des oberen Endes des Saugschlitzes 9 die eingesaugte Fadenlänge von der Drehbewegung des Kopses 5 abhängig ist, lassen sich die weiteren Schritte zeitlich sehr exakt abstimmen, ohne daß zusätzlich zuviel Fadenmaterial abgezogen wird, welches nach dem Trennen nur noch als Abfall verbleibt.The thread beginning of the thread 7 is carried along by the suction air flow within the suction tube 8 and reaches a sensor which consists of a light source 36 and a photodiode 37. Immediately after the beginning of the thread has broken through the light barrier formed by the light source 36 and the photodiode 37, a success signal is given to the central control unit 23 via the line 37 '. Since the arrangement of the upper end of the suction slot 9, the thread length sucked in is dependent on the rotational movement of the cop 5, the further steps can be coordinated very precisely in time without too much thread material being drawn off, which only remains as waste after the separation.

Die zentrale Steuereinheit 23 stoppt nach Erhalt des genannten Erfolgssignales über die Leitung 18' den Motor 18 und verändert dessen Drehrichtung. Zu diesem Zeitpunkt werden auch die nicht dargestellten Ventile geöffnet, die Luftleitungen 34 und 46 mit einer Druckluftquelle verbunden. Dadurch werden die Kolben 32 und 43 verschoben, wodurch die Fadenbremse 25 und die Trenneinrichtung 39 geschlossen werden.The central control unit 23 stops the motor 18 and changes its direction of rotation via the line 18 'after receiving the said success signal. At this time, the valves, not shown, are also opened and the air lines 34 and 46 are connected to a compressed air source. As a result, the pistons 32 and 43 shifted, whereby the thread brake 25 and the separating device 39 are closed.

In der Fadenbremse 25 legt sich der verschwenkbare Schenkel 28 auf den Schenkel 27, der an seinem vorderen Ende mit einer verstellbaren Feder 26 verbunden ist. Dadurch wird der im Saugrohr 8 befindliche Faden 7 geklemmt. Gleichzeitig wird durch das Absperrprofil 29 der Saugluftweg im Saugrohr 8 versperrt.In the thread brake 25, the pivotable leg 28 lies on the leg 27, which is connected at its front end to an adjustable spring 26. As a result, the thread 7 located in the suction tube 8 is clamped. At the same time, the suction air path in the suction pipe 8 is blocked by the shut-off profile 29.

Der bewegliche Scherenschenkel 41 der Trenneinrichtung 39 wird gegen einen fest angeordneten Scherenschenkel 47 geschwenkt, wodurch der Faden 7 auf eine genau definierte Länge geschnitten wird. Außerdem wird, wie bereits dargestellt, an dieser Stelle zusätzlich der Saugluftweg abgesperrt.The movable scissor leg 41 of the separating device 39 is pivoted against a fixedly arranged scissor leg 47, as a result of which the thread 7 is cut to a precisely defined length. In addition, as already shown, the suction air path is also blocked at this point.

Durch die Umkehr der Drehrichtung des Kopses 5 wird jetzt das im Saugrohr verbliebene Fadenstück auf die Hülsenspitze 5' des Kopses aufgewickelt. Dabei wird durch die Fadenbremse 25 die Wickelspannung bestimmt. Die verstellbare Feder 26 gewährleistet dabei, daß die für das jeweilige Fadenmaterial optimale Wickelspannung hergestellt wird.By reversing the direction of rotation of the cop 5, the thread piece remaining in the suction tube is now wound onto the sleeve tip 5 'of the cop. The winding tension is determined by the thread brake 25. The adjustable spring 26 ensures that the optimal winding tension is produced for the respective thread material.

Das horizontale Rohrstück des Saugrohres 8 ist als teleskopartig verschiebbares Rohrstück ausgebildet, wodurch der Abstand zwischen der Fadenbremse 25 und der Trenneinrichtung 39 reguliert werden kann.The horizontal pipe section of the suction pipe 8 is designed as a telescopically displaceable pipe section, as a result of which the distance between the thread brake 25 and the separating device 39 can be regulated.

Bei einem festen Abstand zwischen Fadenbremse und Trenneinrichtung müßte eine durchschnittliche Einstellung gewählt werden, die etwa drei bis vier Wicklungen auf der Kopsspitze zuläßt. Neben einem unterschiedlichen Hülsendurchmesser ergeben sich insbesondere durch Fadendicke und Fadenrauhigkeit unterschiedliche Anforderungen auch bezüglich der Anzahl der auf die Hülsenspitze aufzubringenden Windungen. Durch die genannte Verstellbarkeit ergibt sich die Möglichkeit, neben der Regulierung der Fadenspannung auch durch Anpassung der Windungszahl das jeweilige Optimum für die zu behandelnden Kopse einzustellen.With a fixed distance between the thread brake and the separating device, an average setting would have to be selected, which allows about three to four windings on the tip of the head. In addition to a different sleeve diameter, there are different requirements, in particular due to the thread thickness and roughness of the thread, also with regard to the number of turns to be applied to the sleeve tip. Due to the adjustability mentioned, there is the possibility, in addition to the Regulation of the thread tension also by adjusting the number of turns to set the respective optimum for the heads to be treated.

Da der Schieber 11 den Saugschlitz 9 nach oben begrenzt, ist auch die Höhe, in der der Fadenanfang aufgewickelt wird entsprechend der jeweiligen Kopslänge festgelegt. Es ist dabei weder erforderlich, den Kops für diesen Bewicklungsvorgang in seiner Längsachse zu verschieben, noch ein zusätzliches bewegliches Fadenführungselement in den Fadenlauf einzuschieben.Since the slider 11 limits the suction slot 9 upwards, the height at which the thread start is wound up is also determined in accordance with the respective cop length. It is neither necessary to move the cop in its longitudinal axis for this winding process, nor to insert an additional movable thread guide element into the thread path.

Die Fadenbremse 25 und die Trenneinrichtung 39 sind jeweils von einem Gehäuse 24 beziehungsweise 38 umgeben. Dadurch werden zusätzliche Lufteintritte vermieden. Die Bolzen 30 und 40, die aus den Gehäusen austreten, lassen sich gegenüber diesen Gehäusen ohne weiteres gut abdichten.The thread brake 25 and the separating device 39 are each surrounded by a housing 24 and 38, respectively. This prevents additional air inlets. The bolts 30 and 40 which emerge from the housings can be easily sealed off from these housings.

Eine Platte 13, die zum Beispiel durch einen herausnehmbaren Saugrohrboden 10 in das Saugrohr eingeführt werden kann, wenn dieses zum Beispiel aus dem Bereich der Transportbahn 1 verschwenkt wird, verjüngt den wirksamen Querschnitt des Saugrohres im Bereich des Saugschlitzes entgegen der Saugrichtung. Dadurch ist es möglich, die Strömungsverhältnisse im Saugrohr 8 im Bereich des Saugschlitzes so zu gestalten, daß an jeder Stelle des Saugschlitzes 9 annähernd gleiche Druckverhältnisse herrschen. Diese Platte 13 kann ausgewechselt werden, wenn die Kopsvorbereitungseinrichtung auf eine andere Kopslänge eingestellt wird, das heißt durch den Schieber 11 die Länge des Saugschlitzes 9 angepaßt wird.A plate 13, which can be inserted into the suction tube, for example, through a removable suction tube base 10, for example when it is pivoted out of the area of the transport path 1, tapers the effective cross section of the suction tube in the area of the suction slot against the suction direction. This makes it possible to design the flow conditions in the suction pipe 8 in the area of the suction slot in such a way that approximately the same pressure conditions prevail at every point of the suction slot 9. This plate 13 can be replaced if the cop preparation device is set to a different cop length, that is to say the length of the suction slot 9 is adjusted by the slider 11.

Wie bereits dargelegt, kann die Taktzeit für die Behandlung eines Kopses dadurch herabgesetzt werden, daß unmittelbar nach dem Erfolgssignal des Sensors der Fadensuchvorgang abgebrochen wird. Eine weitere Verkürzung ist noch dadurch möglich, daß die Drehgeschwindigkeit für das Aufwickeln des Fadenanfanges auf die Hülsenspitze höher gewählt wird als die Drehgeschwindigkeit für den Suchvorgang.As already explained, the cycle time for the treatment of a cop can be reduced in that the thread search process is terminated immediately after the success signal from the sensor. A further shortening is still possible in that the rotational speed for winding the beginning of the thread on the Sleeve tip is selected higher than the rotational speed for the search process.

Claims (10)

  1. Bobbin preparation device for winding the start of the thread onto the sleeve tip of the bobbin (5), disposed on a conveying path (1) between a feed position for bobbins and the winding positions of a winding machine, wherein the bobbins, at least in the region of the bobbin preparation device, are placed upright on pegs and the bobbin preparation device possesses a controllable drive device (14, 19) for rotating the relevant bobbin, a suction pipe (8), in which the suction air flows in the longitudinal direction of the bobbin, comprising a suction slit (9) facing towards the bobbin, and a thread cutting device (29), a thread guide element and a sensor (36, 37) for monitoring the detection of the start of the thread, for controlling the drive device (14, 19) and for actuating the thread cutting device when the start of the thread is detected, are present, characterized in that the upper end of the suction slit (9) terminates in the region of the winding-free tip (5') of the bobbin sleeve, that in the suction pipe (8), downstream of the suction slit, an adjustable thread brake (25) is disposed, and that an actuating device (30 to 35) for the thread brake is present, which can be activated by the sensor (36, 37).
  2. Bobbin preparation device according to Claim 1, characterized in that position varying means (11) are provided, for adjusting the length of the suction slit (9).
  3. Bobbin preparation device according to Claim 2, characterized in that the means (11) are so constructed that they come into contact with the bobbin tip (5') of the relevant bobbin (5).
  4. Bobbin preparation device according to Claims 1, 2 or 3, characterized in that the effective cross-section of the suction pipe (8) tapers in the region of the suction slit (9) in opposition to the suction direction.
  5. Bobbin preparation device according to Claim 4, characterized in that a replaceable plate (13), determining the dimension and shape of the taper of the effective diameter, is disposed in the suction pipe (8).
  6. Bobbin preparation device according to one of Claims 1 to 5, characterized in that the thread cutting device (39) is so constructed that in its closed position it blocks the path of suction air.
  7. Bobbin preparation device according to one of Claims 1 to 6, characterized in that the thread brake (25) is so constructed that in its closed position it blocks the path of suction air.
  8. Bobbin preparation device according to one of Claims 1 to 7, characterized in that means (50) are provided for changing the distance between thread brake (25) and thread cutting device (39).
  9. Bobbin preparation device according to one of Claims 1 to 8, characterized in that it is associated with a winding machine, in the unwinding position of which, at the relevant winding station, air nozzles for generating an upwardly directed air flow surrounding the bobbin are present.
  10. Bobbin preparation device according to one of Claims 1 to 9, characterized in that the bobbins are pushed onto pegs of pallets (4), by means of which they are jointly conveyed along the conveying path (1).
EP90113653A 1989-08-04 1990-07-17 Cops-preparation device to wind up the free thread end at the top of the cops Expired - Lifetime EP0411382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925861A DE3925861A1 (en) 1989-08-04 1989-08-04 COP PREPARATION DEVICE FOR TURNING THE START OF THE THREAD ON THE SLEEVE OF THE COPPER
DE3925861 1989-08-04

Publications (2)

Publication Number Publication Date
EP0411382A1 EP0411382A1 (en) 1991-02-06
EP0411382B1 true EP0411382B1 (en) 1993-10-13

Family

ID=6386535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113653A Expired - Lifetime EP0411382B1 (en) 1989-08-04 1990-07-17 Cops-preparation device to wind up the free thread end at the top of the cops

Country Status (4)

Country Link
US (1) US5106027A (en)
EP (1) EP0411382B1 (en)
JP (1) JP2809837B2 (en)
DE (2) DE3925861A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004028C2 (en) * 1990-02-10 2001-06-07 Schlafhorst & Co W Method and device for forming a thread reserve on a package
FR2673171B1 (en) * 1991-02-22 1993-04-09 Superba Sa METHOD AND DEVICE FOR FIXING THE END OF THE WIRE OF A COIL.
DE9115995U1 (en) * 1991-12-23 1992-02-20 W. Schlafhorst Ag & Co, 4050 Moenchengladbach, De
DE4309582A1 (en) * 1993-03-24 1994-09-29 Schlafhorst & Co W Automatic winding machine that has several transport loops for textile bobbins, some of which have common transport routes
US5590845A (en) * 1993-09-24 1997-01-07 Murata Kikai Kabushiki Kaisha Yarn end finding apparatus and method
DE4424462A1 (en) * 1994-07-12 1996-01-18 Schlafhorst & Co W Prepn. of yarn end at a wound cops
DE19650934B4 (en) * 1996-12-07 2010-04-01 Oerlikon Textile Gmbh & Co. Kg Kopsvorbereitungseinrichtung a winder
DE19824909A1 (en) * 1998-06-04 1999-12-09 Schlafhorst & Co W Thread handling device for textile packs
US6419283B1 (en) 2000-10-24 2002-07-16 Belmont Textile Machinery Company Automatic knot-tying machine
CN107055213B (en) * 2017-03-17 2022-10-28 杭州锐冠科技有限公司 Find end of a thread machine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921752A (en) * 1957-10-01 1960-01-19 Bates Mfg Co Bobbin tip bunch builder
DE1276523B (en) * 1961-12-11 1968-08-29 Reiners Walter Dr Ing Pneumatic device for finding and pulling off the beginning of the thread of a textile bobbin
US3236464A (en) * 1962-02-03 1966-02-22 Reiners Walter Device for removing a starting length of yarn from a textile coil
CH481831A (en) * 1967-11-09 1969-11-30 Mettler Soehne Maschf Device for the automatic preparation of cops for automatic winding machines
AT300623B (en) * 1968-09-16 1972-08-10 Elitex Zavody Textilniho Device for locating and depositing a thread end in the tube of a package
GB1276006A (en) * 1969-02-10 1972-06-01 Guinness Son & Co Ltd A Enzymes
CH539572A (en) * 1971-06-18 1973-07-31 Luwa Ag Textile machine with pneumatic auxiliary equipment
US3728550A (en) * 1971-10-20 1973-04-17 Maremont Corp Device and method for detecting and withdrawing a predetermined length of yarn
DE3444821A1 (en) * 1984-12-08 1986-06-12 W. Schlafhorst & Co, 4050 Mönchengladbach DEVICE FOR INSERTING THE THREADING END OF A TEXTILE SPOOL IN THE SPOOL SLEEVE
JPS61169452A (en) * 1985-01-23 1986-07-31 Murata Mach Ltd Yarn end pick finding device
US4848077A (en) * 1987-04-07 1989-07-18 Murata Kikai Kabushiki Kaisha Package feeding method and apparatus
DE3726337A1 (en) * 1987-08-07 1989-02-16 Mayer Fa Karl THREAD END SEARCH DEVICE
US4842206A (en) * 1987-12-21 1989-06-27 Murata Kikai Kabushiki Kaisha Automatic yarn end finding device for a spinning bobbin
DE3809564A1 (en) * 1988-03-22 1989-10-05 Schlafhorst & Co W METHOD AND DEVICE FOR PRODUCING A FINAL WINDING ON TEXTILE REELS WRAPPED ON SLEEVES

Also Published As

Publication number Publication date
JP2809837B2 (en) 1998-10-15
US5106027A (en) 1992-04-21
DE3925861A1 (en) 1991-02-07
DE59003069D1 (en) 1993-11-18
EP0411382A1 (en) 1991-02-06
JPH03166176A (en) 1991-07-18

Similar Documents

Publication Publication Date Title
EP0374406B1 (en) Yarn-feeding device for an automatic winding machine
DE2945504C2 (en) Device for connecting textile threads
EP0498962B1 (en) Method and means for realising a wound bobbin
EP0367253B1 (en) Exchange system for a yarn-positioning device in winding machines
DE3637172A1 (en) METHOD AND DEVICE FOR INCREASING THE REWINDING SPEED OF A WINDING MACHINE
DE19533833A1 (en) Bobbin winder bobbin change system
DE3348199C2 (en)
DE3805347A1 (en) REWINDING MACHINE
EP1161397A1 (en) Device and method for guiding and cutting a tapering thread when changing bobbins
EP0286002A1 (en) Method and device to change bobbins
EP0411382B1 (en) Cops-preparation device to wind up the free thread end at the top of the cops
DE2810741A1 (en) Automatic splicer for broken ends on winding frame - transfers threads from above and below into pneumatic chamber
DE4404907C2 (en) Automatic splicer
DE3314319C2 (en) Device for splicing tapes
DE1095237B (en) Continuously working winding device for wire
EP0365472B1 (en) Device for threading a thread in a loom
EP0249029B1 (en) Device for winding up several threads simultaneously
DE10201533B4 (en) Open-end rotor spinning machine
EP0379861B1 (en) Device for joining sheets together
CH683915A5 (en) An apparatus for supplying a sliver.
DE4115339B4 (en) winding tube
DE2455913A1 (en) SPINNING MACHINE AND PROCESS FOR REEL CHANGING
DE3416886A1 (en) OE FRICTION SPIDER
DE3123282C1 (en) Device for picking up a thread from a bobbin and transferring it to a working organ
DE4318579C2 (en) Device for cutting and punching strip-like tape

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR IT LI

17P Request for examination filed

Effective date: 19910521

17Q First examination report despatched

Effective date: 19921229

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR IT LI

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

Ref country code: FR

Effective date: 19931013

REF Corresponds to:

Ref document number: 59003069

Country of ref document: DE

Date of ref document: 19931118

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950823

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950906

Year of fee payment: 6

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

Ref country code: LI

Effective date: 19960731

Ref country code: CH

Effective date: 19960731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19970402

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

Ref country code: IT

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

Effective date: 20050717