EP2952462B1 - Method and device for monitoring empty sleeve quality - Google Patents

Method and device for monitoring empty sleeve quality Download PDF

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Publication number
EP2952462B1
EP2952462B1 EP15001344.9A EP15001344A EP2952462B1 EP 2952462 B1 EP2952462 B1 EP 2952462B1 EP 15001344 A EP15001344 A EP 15001344A EP 2952462 B1 EP2952462 B1 EP 2952462B1
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EP
European Patent Office
Prior art keywords
empty tube
measured value
empty
tube
cross
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EP15001344.9A
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German (de)
French (fr)
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EP2952462A1 (en
Inventor
Stefan Bungter
Marc Küppenbender
Alexander Marx
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.)
Saurer Spinning Solutions GmbH and Co KG
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Saurer Spinning Solutions GmbH and Co KG
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Publication of EP2952462A1 publication Critical patent/EP2952462A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • 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
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0405—Arrangements for removing completed take-up packages or for loading an empty core
    • B65H67/0417—Arrangements for removing completed take-up packages or for loading an empty core for loading an empty core
    • 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 method for producing cross-wound bobbins, the cross-wound bobbins being exchanged for an empty tube after their completion, onto which a new cross-wound bobbin is then wound, and a device for performing the method.
  • cross-bobbin changers In connection with textile machines producing cross-wound bobbins, such as winding machines, so-called cross-bobbin changers have been known for a long time and are described in various patents, for example in US Pat EP 0 282 105 A1 or in the DE 198 36 702 A1 , presented in detail.
  • Service units are also used on other textile machines that produce cheese, such as open-end spinning machines.
  • these service units usually also have other operating devices which, for example, allow cleaning of the spinning agent or piecing of the thread after a thread break.
  • a package changer ensures that packages that have reached their specified diameter are transferred to a textile machine's own package transport device and that an empty tube from an empty tube magazine is then exchanged into the bobbin frame of the relevant work station.
  • the package changer has various handling elements that are used in the course of the cross-package / empty tube changing process.
  • handling elements are, for example, a frame opener, a frame lifter, a bobbin guide device, a tube feeder and a thread lifter.
  • Such cheese changers are usually arranged to be movable with trolleys on machine-length tracks that are arranged above the workplaces of the textile machines producing cross-wound bobbins.
  • the JP S60 244 764 A discloses a device for determining whether an empty tube is properly inserted into the spool frame.
  • An empty tube clamped between a bracket and the spool frame is brought into contact with the friction roller and the amplitude is detected by means of a vibration detector which is arranged on a boom.
  • the vibration detector is connected to a waveform comparator in order to compare the amplitude at times A and B with a predetermined amplitude.
  • U.S. 3,021,949 discloses an apparatus for inspecting and detecting the imperfections of cylindrical articles.
  • the invention is suitable for detecting out-of-round running behavior, deviating lengths and for detecting annular gaps in C-rings attached to a head side.
  • the device is the U.S. 3,021,949 an independent unit in which the cylindrical articles are clamped, set in rotation and illuminated by a lamp, this light beam in turn being detected by a sensor. Depending on this signal, the device is controlled in such a way that the cylindrical articles either fall into a container for further use or into a container for sorting.
  • a cheese changer for a textile machine producing cheese is through the DE 195 33 833 A1 known.
  • the thread still present between the supply package and the completed cheese is first picked up by a special handling means of the cheese changer, a so-called thread lifter, and separated in a defined manner by a cutting and clamping device arranged on the thread lifter.
  • the cheese is then conveyed onto a cheese conveyor belt located behind the work stations, and a so-called tube feeder positions a new empty tube in the spool frame.
  • the end of the thread connected to the supply bobbin is held in place and finally placed on the newly inserted empty tube and the foot reserve winding is created.
  • the unpublished patent application with the application number 102013014195.8 discloses a method and a textile machine for eliminating a thread interruption when winding a thread onto a cheese. If a thread break occurs shortly after a cross-wound bobbin / empty tube change, or the newly inserted empty tube does not start properly and the thread length falls below a specified minimum, the winding unit requests that the empty tube be replaced. This exchange of the empty tubes takes place through the cheese changer.
  • the object of the present invention is to propose a method and an associated device that enable the quality of the empty tube to be monitored, which ultimately also has a positive effect on the productivity of the textile machine.
  • this object is achieved by the characterizing features of claim 1 for a method and by the characterizing features of claim 5 for a device.
  • the cheese changer replaces the full cheese with a new empty tube. After the empty tube has been inserted, it is first rotated, the cheese changer being advantageous a so-called foot reserve winding is already generated.
  • a measuring device detects at least one measured value that characterizes the concentricity of the empty tube. This measured value is compared with tolerance limits.
  • the empty tube is not deformed or is only deformed to a tolerable extent, and that the running behavior of the empty tube is smooth and acceptable. As a result, the empty tube remains in the bobbin frame and the winding process begins.
  • deformed empty tubes can be identified and, if necessary, sorted out immediately after they have been inserted into the bobbin frame, but before the winding process begins. This avoids that the deformed empty tubes are fed to the winding process and that the empty tubes can become detached from the bobbin frame after some time due to the uneven running behavior. Downtimes and the use of personnel are thus reduced, which has a positive effect on the productivity of the textile machine.
  • the empty tube is too much deformed to ensure smooth running behavior during the winding process to produce a quality package.
  • the empty tube comes loose from the bobbin frame during the winding process. Therefore, the inserted empty tube is removed from the spool frame and a new empty tube is inserted. In the case of this newly exchanged empty tube, the concentricity is then again determined according to the invention before the start of the winding process.
  • the determination of the measured value for the concentricity of the empty tube takes place without contact.
  • Contactless measuring devices offer the advantage that they enable a reaction and wear-free measuring process within a short response time and at the same time have a high repeat accuracy.
  • the measurement value for the concentricity of the empty tube can be determined in particular by means of a camera system with image evaluation software.
  • This special form of contactless detection enables a photographic comparison between the currently inserted empty tube and previously captured images of empty tubes in order to be able to evaluate the concentricity of the current empty tube. Either images are stored of empty tubes that are too much deformed to enable a trouble-free winding process, or of empty tubes that have no deformations or acceptable deformations with which a trouble-free winding process is still possible.
  • the measured value for the concentricity of the empty tube is determined by means of a mechanical button with a limit switch.
  • buttons offer high durability in industrial environments as well as high repeat accuracy. They are absolutely safe from electromagnetic interference and can also be used at high operating voltages.
  • the device has first means for determining at least one measured value characterizing the concentricity, and is designed to compare the at least one measured value with tolerance limits, recognizes when the tolerance limits of the at least one measured value are adhered to that the empty tube is not deformed or is only deformed to a tolerable extent and generates a signal that starts the winding process, the device also has second means which, if tolerance limits of the at least one measured value are not adhered to, recognize that the empty tube is too much deformed and generate an alternating signal that allows the empty tube already inserted to be replaced with a new one Empty tube triggers and the first and second Means are part of a mobile service unit that exchanges the packages for empty tubes.
  • this makes it possible to check the quality of the empty tubes before the start of the winding process and to only use the empty tubes that guarantee a smooth winding and winding process.
  • the determination of the concentricity and the determination of a measured value characterizing the concentricity can be integrated in the already known cross-wound bobbin / empty tube change in a meaningful way. This means that after the fully loaded cheese has been removed from the bobbin frame and a new empty tube has been inserted into the bobbin frame as part of the usual cross-bobbin / empty tube change by the cross-bobbin changer, the run-out of the empty tube is carried out at the same time, for example during the creation of the foot reserve winding a measuring device is determined.
  • the device according to the invention thus has the advantage that no costly modifications to the textile machine are necessary, but rather that the device according to the invention mainly relies on existing machine elements of a textile machine producing cross-wound bobbins.
  • the at least one measured value obtained for the concentricity is compared with tolerance limits and, if the tolerance values are observed, a signal is generated that starts the winding process.
  • a measuring device is used to be able to determine a measured value and to determine the concentricity of the empty tube. This measuring device can be based on different measuring principles.
  • the concentricity of the empty tube and thus the quality of the empty tube can be determined in different ways.
  • One possibility is to measure the amplitude of the coil frame, on which the empty tube has a direct influence. Than ever The more deformed the empty tube, the greater the amplitude of the bobbin frame and the more uneven the running behavior of the empty tube.
  • Another possibility is to assess the geometry of the empty tube. This means that images of the empty tube are created, which in turn are compared with stored images of non-deformed to differently deformed empty tubes. If the deformations of the empty tube exceed the deformations of an image defined as borderline, the empty tube must be exchanged for a new one in order to ensure smooth production.
  • the at least one measured value characterizing the concentricity is then compared with tolerance limits. Depending on this comparison, either the empty tube remains in the bobbin frame and the winding process is started, or the at least one measured value exceeds the tolerance limits, whereupon an alternating signal is generated and the cheese changer removes the empty tube that has already been inserted from the bobbin frame and inserts a new empty tube into the bobbin frame.
  • the device is preferably arranged in the cheese changer. This embodiment offers the advantage that a single measuring device in the cheese changer is sufficient to determine the concentricity by determining a measured value.
  • the first means for determining the measured value for the concentricity of an empty tube contain a contactless measuring device.
  • a photo cell, an inductive sensor or a measurement with a laser can be used as non-contact measuring principles.
  • the DE 1 278 308 discloses, for example, an optoelectronic sensor.
  • the irradiation of a spinning tube by means of a light source is described, with the light reflected by the spinning tube being detected with the aid of a photocell.
  • the light beam reflected by the spinning end tube influences the photocell to a greater or lesser extent, depending on whether or not there is a winding residue on the spinning end tube.
  • a rotating, deformed empty tube produces a deviation in the reflection as does a residual winding.
  • the first means for determining the measured value for the concentricity of an empty tube contain a camera system with image evaluation software.
  • Measuring devices of this type are known from the prior art, are often used in the textile industry and belong to the non-contact measuring devices.
  • the DE 10 2007 057 921 A1 describes, for example, the automated identification of empty tubes based on the characteristic features of the empty tubes. Different colors and patterns of the empty tubes are recognized by a so-called CCD camera taking pictures of the empty tubes and comparing them with images of stored empty tubes in an image processing device. Instead of a pattern, an asymmetry would be recognized here.
  • the first means for determining the measured value for the concentricity of an empty tube contain a mechanical button with a limit switch.
  • An electro-mechanical button is, for example, through the DE 41 10 626 A1 disclosed.
  • a device which contains an electromechanical tube monitor which detects the amount of residual yarn remaining on the spinning end tube.
  • a metal comb brushes the side of the spinning head sleeve.
  • conclusions can be drawn about the remaining capacity of the spinning end tube drawn.
  • Such a button could also be used to monitor the amplitude of the surface movement of an empty tube rotating in the bobbin frame.
  • FIG. 1 a winding machine designated by the reference number 1 is shown schematically in a front view.
  • Such winding machines 1 usually have a large number of similar work stations, preferably winding stations 2, between their end frames 35, 36.
  • the spinning cops 9 produced on a ring spinning machine (not shown) are rewound into large-volume cross-wound bobbins 11 on these winding units 2.
  • the finished cheeses 11 are transferred to a textile machine's own cheeses transport device 21 by means of an automatically operating service unit 23, hereinafter referred to as cheeses, as shown in FIG Figure 2 shown, transferred and then transported to a machine end (not shown) coil loading station or the like.
  • Such winding machines 1 generally have a logistics device in the form of a bobbin and tube transport system 3.
  • spinning cops 9 and empty spinning cops 34 run on transport plates 8.
  • such winding machines 1 have a central control unit 37, which is connected, for example via a machine bus 40, both to the workstation computers 39 of the individual winding units 2 and to the control device 38 of the cross-bobbin changer 23 serving the winding units 2.
  • the cheese changer 23 is movably supported with its chassis 24, 25 on machine-length tracks 26, 27 which are arranged above the winding units 2.
  • the cheese changer 23 not only ensures that the cheese 11 finished on the winding units 2 are properly transferred to the package transport device 21, but also automatically changes an empty tube 28 into the bobbin frame 18 of the respective winding unit 2.
  • the cheese changer 23 removes the corresponding empty tube 28 from an empty tube storage unit 22 belonging to the work station, which is arranged above the winding station 2 in each case.
  • the spinning cops 9, which have relatively little yarn volume, are rewound into large-volume cross-wound bobbins 11 in the unwinding positions 10, which are located in the region of the transverse transport paths (not shown).
  • Figure 2 shows the state shortly after the full cheese 11 has been exchanged for an empty tube 28.
  • the empty tube 28 is held in a reel frame 18 and rotatably mounted.
  • the empty tube 28 is wound into a cheese 11.
  • the empty tube 28 or the cheese 11 lies on a drive drum 12 and is carried along by this via a frictional connection.
  • the winding unit 2 also has a pivotable suction nozzle 14 which, in the event of a thread interruption, detects the upper thread connected to the cheese 11 and inserts it into the thread connection device 13.
  • the bobbin thread connected to the spinning cop 9 is of the pivotable, with The gripper tube 15 subjected to negative pressure is detected and inserted into the thread connecting device 13.
  • a thread interruption can be triggered, for example, by a cleaner cut, a thread break or idling of the spinning cop 9 or the supply package.
  • the cleaner 17 is arranged in the thread run. He monitors the thread 20 for errors and, if necessary, carries out a cleaner cut.
  • the lower thread is then held by the thread tensioner 16 and can be taken up by the looper tube 15.
  • the upper thread runs onto the cheese 11 and can be grasped by the suction nozzle 14.
  • the upper and lower threads are inserted into the thread connecting device 13 and a thread connection is carried out. In the case of a thread book above the thread tensioner 16, the sequence for the thread connection is corresponding.
  • the suction bell 19 is first activated and the thread on the spinning cop 9 is detected. Then the bobbin thread can be taken over by the looper tube 15. Then continue with the thread connection as already described.
  • the package changer 23 is provided for carrying out a cross-bobbin / empty tube change.
  • the cheese changer 23 ensures that packages 11 which have reached a predetermined diameter are transferred to the package transport device 21 and that an empty tube 28 is then exchanged in the package frame 18.
  • the cheese changer 23 can be moved along the winding machine 1 and is guided on the running rails 26 and 27.
  • the cheese changer 23 has a large number of handling devices which are known in the prior art. Because of this, these are in Figure 2 only hinted at. These include the thread lifter 50, the frame opener 51, the tube feeder 52 and the frame lifter 53. As is also known, the handling devices are driven by individual drives. This makes it possible in principle to specify any movement sequences.
  • the winding unit 2 has an empty tube store 22 in which empty tubes 28 are stored for the cross-bobbin / empty tube change.
  • the empty tube store 22 could also be attached to the cheese changer 23 or centrally.
  • the package 11 When the cheese 11 has reached its specified diameter at a winding station 2 of the textile machine, the package 11 is lifted from its drive drum 12 via a winding station's own lifting device (not shown) and comes to a standstill, braked or unbraked.
  • the cross-bobbin changer 23 which is arranged to be movable on tracks 26, 27 on the superstructure of the winding machines 1, is requested.
  • the request of the cheese changer can also take place preventively, that is, the request signal can already be sent before a cheese 11 has reached its final diameter.
  • the cheese changer 23 which, as explained above, has handling devices for exchanging a finished cheese 11 for an empty tube 28, is positioned in front of the relevant winding station 2.
  • the frame opener 51 then opens the package frame 18.
  • the pivoting frame arm is pressed outwards.
  • the bobbin frame 18 is opened, the cross-wound bobbin 11 held between the bobbin frame arms is released and reaches the swivel plate arranged below.
  • the swivel plate is gripped underneath and raised by the frame lifter 53.
  • the cheese 11 is thereby rolled onto the cheese transport device 21.
  • the empty tube 28 is removed from the workstation's own empty tube store 22 by means of the tube feeder (not shown) and transported into the area of the bobbin frame 18.
  • the bobbin frame 18 is brought into a position by the frame lifter 53 and the frame opener 51 in which the tube gripper (not shown) can easily insert a new empty tube 28 into the bobbin frame 18.
  • the thread 20 is fixed on the empty tube 28.
  • the bobbin thread is transported by means of the gripper tube 15 and the suction nozzle 14 into the area of the bobbin frame 18 and the thread 20 is clamped between the empty tube 28 and a receptacle of the bobbin frame 18.
  • the thread lifter 50 is positioned so that a foot reserve is wound.
  • the processes of the winding machine 1, the winding station 2 and the cheese changer 23 are controlled by the central control unit 37, the workstation computers 39 and the controller 38 of the cheese changer 23. These controls are connected to one another via bus lines 40 and 41.
  • first means detect the amplitude of the coil frame 18 by means of the measuring cell 31 while the foot reserve is being created, and a measured value that characterizes the concentricity of the inserted empty tube 28 is generated.
  • This measured value is transmitted to the workstation computer 39 via the machine bus 40.
  • the measured value is then compared with limit values and an excess of the tolerance limits is indicated.
  • the second means generate an alternating signal which is transmitted to the controller 38 of the cheese changer 23.
  • the change signal causes the cheese changer 23 to replace the previously inserted empty tube 28 with a new empty tube 28 from the empty tube store 22.
  • the empty tube 28 with the remaining thread is transported away via the cheese transport device 21 and can be sorted out later.
  • the sequence of the empty tube exchange is in principle identical to the exchange of the full cheese 11 for the empty tube 28, as described above.
  • the thread 20 is also fixed to the empty tube 28 as described above.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Looms (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Kreuzspulen, wobei die Kreuzspulen nach ihrer Fertigstellung jeweils gegen eine Leerhülse ausgetauscht werden, auf die dann eine neue Kreuzspule aufgespult wird, sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for producing cross-wound bobbins, the cross-wound bobbins being exchanged for an empty tube after their completion, onto which a new cross-wound bobbin is then wound, and a device for performing the method.

Im Zusammenhang mit Kreuzspulen herstellenden Textilmaschinen, wie beispielsweise Spulmaschinen, sind so genannte Kreuzspulenwechsler seit langem bekannt und in diversen Patentschriften, beispielsweise in der EP 0 282 105 A1 oder in der DE 198 36 702 A1 , eingehend dargestellt.In connection with textile machines producing cross-wound bobbins, such as winding machines, so-called cross-bobbin changers have been known for a long time and are described in various patents, for example in US Pat EP 0 282 105 A1 or in the DE 198 36 702 A1 , presented in detail.

Auch an anderen Kreuzspulen herstellenden Textilmaschinen, wie zum Beispiel Offenend-Spinnmaschinen, werden Serviceaggregate eingesetzt. Diese Serviceaggregate weisen neben der Kreuzspulenwechseleinrichtung üblicherweise auch weitere Bedienvorrichtungen auf, die beispielsweise ein Reinigen des Spinnmittels oder ein Anspinnen des Fadens nach einem Fadenbruch ermöglichen.Service units are also used on other textile machines that produce cheese, such as open-end spinning machines. In addition to the cross-wound bobbin changing device, these service units usually also have other operating devices which, for example, allow cleaning of the spinning agent or piecing of the thread after a thread break.

Ein Kreuzspulenwechsler sorgt dafür, dass Kreuzspulen, die ihren vorgegebenen Durchmesser erreicht haben, auf eine textilmaschineneigene Kreuzspulentransporteinrichtung überführt werden und dass im Anschluss daran eine Leerhülse aus einem Leerhülsenmagazin in den Spulenrahmen der betreffenden Arbeitsstelle eingewechselt wird.A package changer ensures that packages that have reached their specified diameter are transferred to a textile machine's own package transport device and that an empty tube from an empty tube magazine is then exchanged into the bobbin frame of the relevant work station.

Zu diesem Zweck verfügt der Kreuzspulenwechsler über verschiedene Handhabungselemente, die im Zuge des Wechselvorganges Kreuzspule-Leerhülse zum Einsatz kommen. Solche Handhabungselemente sind beispielsweise ein Rahmenöffner, ein Rahmenheber, eine Spulenführungsvorrichtung, ein Hülsenzubringer sowie ein Fadenheber.For this purpose, the package changer has various handling elements that are used in the course of the cross-package / empty tube changing process. Such handling elements are, for example, a frame opener, a frame lifter, a bobbin guide device, a tube feeder and a thread lifter.

Um im Bedarfsfall selbsttätig die Arbeitsstellen der Textilmaschine versorgen zu können, sind derartige Kreuzspulenwechsler üblicherweise mit Fahrwerken auf maschinenlangen Laufbahnen, die oberhalb der Arbeitsstellen der Kreuzspulen herstellenden Textilmaschinen angeordnet sind, verfahrbar angeordnet.In order to be able to automatically supply the workplaces of the textile machine if necessary, such cheese changers are usually arranged to be movable with trolleys on machine-length tracks that are arranged above the workplaces of the textile machines producing cross-wound bobbins.

Die JP S60 244 764 A offenbart eine Vorrichtung zum Feststellen, ob eine Leerhülse ordnungsgemäß in den Spulenrahmen eingelegt ist. Eine zwischen einem Bügel und dem Spulenrahmen eingeklemmte Leerhülse wird in Kontakt mit der Friktionswalze gebracht und die Amplitude mittels eines Schwingungsdetektors, der auf einem Ausleger angeordnet ist, erfasst. Dabei ist der Schwingungsdetektor mit einem Wellenform Komparator verbunden, um die Amplitude zum Zeitpunkt A und B mit einer vorgegebenen Amplitude zu vergleichen.The JP S60 244 764 A discloses a device for determining whether an empty tube is properly inserted into the spool frame. An empty tube clamped between a bracket and the spool frame is brought into contact with the friction roller and the amplitude is detected by means of a vibration detector which is arranged on a boom. The vibration detector is connected to a waveform comparator in order to compare the amplitude at times A and B with a predetermined amplitude.

US 3 021 949 offenbart eine Vorrichtung für das Überprüfen und Erfassen der Mängel zylindrischer Artikel. Insbesondere ist die Erfindung zum Nachweis von unrundem Laufverhalten, abweichenden Längen geeignet sowie zum Detektieren von Ringspalten von an einer Kopfseite angebrachten C-Ringen. Dabei ist die Vorrichtung der US 3 021 949 eine eigenständige Einheit, in die die zylindrischen Artikel eingespannt, in Drehung versetzt und mittels einer Lampe angestrahlt werden, wobei dieser Lichtstrahl wiederum von einem Sensor erfasst wird. In Abhängigkeit dieses Signals wird die Vorrichtung derart angesteuert, dass die zylindrischen Artikel entweder in einen Behälter zur Weiterverwendung oder in einen Behälter zur Aussortierung fallen. U.S. 3,021,949 discloses an apparatus for inspecting and detecting the imperfections of cylindrical articles. In particular, the invention is suitable for detecting out-of-round running behavior, deviating lengths and for detecting annular gaps in C-rings attached to a head side. The device is the U.S. 3,021,949 an independent unit in which the cylindrical articles are clamped, set in rotation and illuminated by a lamp, this light beam in turn being detected by a sensor. Depending on this signal, the device is controlled in such a way that the cylindrical articles either fall into a container for further use or into a container for sorting.

Ein Kreuzspulenwechsler für eine Kreuzspulen herstellende Textilmaschine ist durch die DE 195 33 833 A1 bekannt. Im Falle eines Kreuzspulen-Leerhülsen-Wechsels wird der noch zwischen der Vorlagespule und der fertiggestellten Kreuzspule vorhandene Faden zunächst durch ein spezielles Handhabungsmittel des Kreuzspulenwechslers, einen so genannten Fadenheber, aufgenommen und durch eine am Fadenheber angeordnete Schneid- und Klemmeinrichtung definiert abgetrennt. Im Anschluss daran wird die Kreuzspule auf ein hinter den Arbeitsstellen angeordnetes Kreuzspulentransportband befördert, und ein so genannter Hülsenzubringer positioniert eine neue Leerhülse in dem Spulenrahmen. Dabei wird das mit der Vorlagespule verbundene Fadenende festgehalten und schließlich an die neu eingelegte Leerhülse angelegt und die Fußreservewicklung erstellt.A cheese changer for a textile machine producing cheese is through the DE 195 33 833 A1 known. In the case of a cheese-empty tube change, the thread still present between the supply package and the completed cheese is first picked up by a special handling means of the cheese changer, a so-called thread lifter, and separated in a defined manner by a cutting and clamping device arranged on the thread lifter. The cheese is then conveyed onto a cheese conveyor belt located behind the work stations, and a so-called tube feeder positions a new empty tube in the spool frame. The end of the thread connected to the supply bobbin is held in place and finally placed on the newly inserted empty tube and the foot reserve winding is created.

Da viele Spinnereien kostengünstige Papphülsen einsetzen, kommt es relativ häufig vor, dass die Kanten der Leerhülsen mehr oder weniger stark deformiert sind. Wird eine derartige, deformierte Leerhülse in den Spulenrahmen eingelegt und die Spulstelle läuft an, so löst sich nach einiger Zeit, sobald genügend Masse auf die Leerhülse aufgewickelt wurde, die Kreuzspule aus dem Spulenrahmen. Bei manchen Maschinentypen kann dabei auch der Fadenverlegehebel der Spulstelle beschädigt oder gar mit abgerissen werden.Since many spinning mills use inexpensive cardboard tubes, it happens relatively often that the edges of the empty tubes are more or less severely deformed. If such a deformed empty tube is inserted into the bobbin frame and the winding unit runs on, after some time, as soon as enough mass has been wound onto the empty tube, the cross-wound bobbin comes off the bobbin frame. With some machine types, the thread-traversing lever of the winding unit can also be damaged or even torn off with it.

Die nicht vorveröffentlichte Patentanmeldung mit der Anmeldenummer 102013014195.8 offenbart ein Verfahren sowie eine Textilmaschine zur Behebung einer Fadenunterbrechung beim Wickeln eines Fadens auf eine Kreuzspule. Wenn kurz nach einem Kreuzspulen-Leerhülsen-Wechsel ein Fadenbruch auftritt, oder die neu eingelegte Leerhülse nicht ordnungsgemäß anläuft und eine festgelegte Mindestfadenlänge unterschritten wird, fordert die Spulstelle einen Austausch der Leerhülse an. Dieser Austausch der Leerhülsen erfolgt durch den Kreuzspulenwechsler. Aufgabe der vorliegenden Erfindung ist es, ein Verfahren sowie eine dazugehörige Vorrichtung vorzuschlagen, die eine Überwachung der Leerhülsenqualität ermöglichen, was sich letztendlich auch positiv auf die Produktivität der Textilmaschine auswirkt.The unpublished patent application with the application number 102013014195.8 discloses a method and a textile machine for eliminating a thread interruption when winding a thread onto a cheese. If a thread break occurs shortly after a cross-wound bobbin / empty tube change, or the newly inserted empty tube does not start properly and the thread length falls below a specified minimum, the winding unit requests that the empty tube be replaced. This exchange of the empty tubes takes place through the cheese changer. The object of the present invention is to propose a method and an associated device that enable the quality of the empty tube to be monitored, which ultimately also has a positive effect on the productivity of the textile machine.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 für ein Verfahren sowie durch die kennzeichnenden Merkmale des Anspruches 5 für eine Vorrichtung gelöst.According to the invention, this object is achieved by the characterizing features of claim 1 for a method and by the characterizing features of claim 5 for a device.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Zur Lösung der Aufgabe ist gemäß Anspruch 1 vorgesehen, dass vor dem Neustart des Spulprozesses mindestens ein Messwert bestimmt wird, der den Rundlauf der Leerhülse charakterisiert, dass bei Einhaltung von Toleranzgrenzen des mindestens einen Messwertes erkannt wird, dass die Leerhülse nicht oder nur in einem tolerierbaren Ausmaß deformiert ist, und der Spulprozess gestartet wird und dass bei Nichteinhaltung von Toleranzgrenzen des mindestens einen Messwertes erkannt wird, dass die Leerhülse zu stark deformiert ist ein Wechsel der Leerhülse gegen eine andere Leerhülse erfolgt.Advantageous embodiments of the invention are the subject of the subclaims. To solve the problem, it is provided according to claim 1 that before the restart of the winding process at least one measured value is determined which characterizes the concentricity of the empty tube, that if tolerance limits of the at least one measured value are adhered to, it is recognized that the empty tube is not or only in a tolerable one Extent is deformed, and the winding process is started and that if tolerance limits of the at least one measured value are not adhered to, it is recognized that the empty tube is too much deformed and the empty tube is replaced with another empty tube.

Das bedeutet, zunächst wird, wie üblich, durch den Kreuzspulenwechsler die volle Kreuzspule gegen eine neue Leerhülse ausgetauscht. Nachdem die Leerhülse eingelegt wurde, wird sie zunächst rotiert, wobei vorteilhaft der Kreuzspulenwechsler bereits eine so genannte Fußreservewicklung erzeugt. Eine Messeinrichtung erfasst einen den Rundlauf der Leerhülse charakterisierenden mindestens einen Messwert. Dieser Messwert wird mit Toleranzgrenzen verglichen.This means that, as usual, the cheese changer replaces the full cheese with a new empty tube. After the empty tube has been inserted, it is first rotated, the cheese changer being advantageous a so-called foot reserve winding is already generated. A measuring device detects at least one measured value that characterizes the concentricity of the empty tube. This measured value is compared with tolerance limits.

Befindet sich der Messwert innerhalb der Toleranzgrenzen, bedeutet das, dass die Leerhülse nicht, oder nur in einem tolerierbaren Ausmaß deformiert ist und somit das Laufverhalten der Leerhülse ruhig und akzeptabel ist. Folglich verbleibt die Leerhülse im Spulenrahmen und der Spulvorgang beginnt.If the measured value is within the tolerance limits, this means that the empty tube is not deformed or is only deformed to a tolerable extent, and that the running behavior of the empty tube is smooth and acceptable. As a result, the empty tube remains in the bobbin frame and the winding process begins.

Auf diese Weise können deformierte Leerhülsen unmittelbar nach dem Einlegen in den Spulenrahmen, aber noch vor Beginn des Spulprozesses, erkannt und gegebenenfalls aussortiert werden. Dadurch wird vermieden, dass die deformierten Leerhülsen dem Spulprozess zugeführt werden und sich die Leerhülsen aufgrund des unrunden Laufverhaltens nach einiger Zeit aus dem Spulenrahmen lösen können. Stillstände und personeller Arbeitseinsatz werden somit reduziert, was sich positiv auf die Produktivität der Textilmaschine auswirkt.In this way, deformed empty tubes can be identified and, if necessary, sorted out immediately after they have been inserted into the bobbin frame, but before the winding process begins. This avoids that the deformed empty tubes are fed to the winding process and that the empty tubes can become detached from the bobbin frame after some time due to the uneven running behavior. Downtimes and the use of personnel are thus reduced, which has a positive effect on the productivity of the textile machine.

Es bietet sich an, den Rundlauf der Leerhülse während der Erstellung der Fußreservewicklung zu bestimmen, da dadurch keine zusätzliche Zeit in Anspruch genommen werden muss. Theoretisch wäre es aber ebenfalls auch denkbar, beispielsweise vor der Erstellung der Fußreservewicklung, die Leerhülse anzutreiben und den Rundlauf zu erfassen. Dadurch würde die Arbeitsstelle allerdings länger als notwendig nicht produzieren können, was vermieden werden sollte.It is advisable to determine the concentricity of the empty tube during the creation of the foot reserve winding, since this does not require any additional time. Theoretically, however, it would also be conceivable, for example, to drive the empty tube and record the concentricity before creating the foot reserve winding. As a result, however, the job would not be able to produce longer than necessary, which should be avoided.

Wenn der mindestens eine Messwert, der den Rundlauf der Leerhülse charakterisiert, die Toleranzgrenzen überschreitet, so ist die Leerhülse zu stark deformiert, um ein ruhiges Laufverhalten während des Spulprozesses zur Erzeugung einer Qualitätsspule zu gewährleisten. Im schlimmsten Fall löst sich die Leerhülse während des Spulvorganges aus dem Spulenrahmen. Deswegen wird die eingelegte Leerhülse wieder aus dem Spulenrahmen entnommen und eine neue Leerhülse eingelegt. Bei dieser neu eingewechselten Leerhülse wird dann wieder erfindungsgemäß vor Beginn des Spulprozesses der Rundlauf bestimmt.If the at least one measured value that characterizes the concentricity of the empty tube exceeds the tolerance limits, the empty tube is too much deformed to ensure smooth running behavior during the winding process to produce a quality package. In the worst case, the empty tube comes loose from the bobbin frame during the winding process. Therefore, the inserted empty tube is removed from the spool frame and a new empty tube is inserted. In the case of this newly exchanged empty tube, the concentricity is then again determined according to the invention before the start of the winding process.

Vorteilhafterweise, wie in Anspruch 2 dargelegt, erfolgt die Bestimmung des Messwerts für den Rundlauf der Leerhülse berührungslos.Advantageously, as set out in claim 2, the determination of the measured value for the concentricity of the empty tube takes place without contact.

Berührungslose Messeinrichtungen bieten den Vorteil, dass sie innerhalb einer kurzen Ansprechzeit einen rückwirkungs- und verschleißfreien Messvorgang ermöglichen und dabei eine hohe Wiederholgenauigkeit aufweisen.Contactless measuring devices offer the advantage that they enable a reaction and wear-free measuring process within a short response time and at the same time have a high repeat accuracy.

Gemäß Anspruch 3 kann die Bestimmung des Messwerts für den Rundlauf der Leerhülse insbesondere mittels eines Kamerasystems mit Bildauswertungssoftware erfolgen.According to claim 3, the measurement value for the concentricity of the empty tube can be determined in particular by means of a camera system with image evaluation software.

Diese spezielle Form der berührungslosen Erfassung ermöglicht den fotografischen Vergleich zwischen der aktuell eingelegten Leerhülse und zuvor erfassten Bildern von Leerhülsen, um den Rundlauf der aktuellen Leerhülse bewerten zu können. Entweder werden Bilder von Leerhülsen hinterlegt, die zu stark deformiert sind, um einen störungsfreien Spulprozess zu ermöglichen, oder von Leerhülsen, die keine Deformierungen respektive akzeptable Deformierungen aufweisen, mit denen immer noch ein störungsfreier Spulprozess möglich ist.This special form of contactless detection enables a photographic comparison between the currently inserted empty tube and previously captured images of empty tubes in order to be able to evaluate the concentricity of the current empty tube. Either images are stored of empty tubes that are too much deformed to enable a trouble-free winding process, or of empty tubes that have no deformations or acceptable deformations with which a trouble-free winding process is still possible.

In bevorzugter Ausgestaltung, wie in Anspruch 4 erläutert, erfolgt die Bestimmung des Messwerts für den Rundlauf der Leerhülse mittels eines mechanischen Tasters mit Endschalter.In a preferred embodiment, as explained in claim 4, the measured value for the concentricity of the empty tube is determined by means of a mechanical button with a limit switch.

Diese unkomplizierten mechanischen Taster bieten eine hohe Beständigkeit in industriellen Umgebungen sowie eine hohe Wiederholgenauigkeit. Sie sind absolut sicher vor elektromagnetischen Störeinflüssen und auch bei hohen Betriebsspannungen einsetzbar.These uncomplicated mechanical buttons offer high durability in industrial environments as well as high repeat accuracy. They are absolutely safe from electromagnetic interference and can also be used at high operating voltages.

Gemäß Anspruch 5 besitzt die Vorrichtung erste Mittel zur Ermittlung mindestens eines den Rundlauf charakterisierenden Messwertes, und ist zum Vergleich des mindestens einen Messwertes mit Toleranzgrenzen ausgebildet, erkennt bei Einhaltung von Toleranzgrenzen des mindestens einen Messwertes dass die Leerhülse nicht oder nur in einem tolerierbaren Ausmaß deformiert ist und erzeugt ein Signal, das den Spulprozess startet, die Vorrichtung besitzt zudem zweite Mittel, die bei Nichteinhaltung von Toleranzgrenzen des mindestens einen Messwertes erkennen, dass die Leerhülse zu stark deformiert ist und ein Wechselsignal erzeugen, das den Tausch der bereits eingelegten Leerhülse gegen eine neue Leerhülse auslöst und die ersten und zweiten Mittel sind Bestandteil eines fahrbaren Serviceaggregates, das die Kreuzspulen gegen Leerhülsen austauscht.According to claim 5, the device has first means for determining at least one measured value characterizing the concentricity, and is designed to compare the at least one measured value with tolerance limits, recognizes when the tolerance limits of the at least one measured value are adhered to that the empty tube is not deformed or is only deformed to a tolerable extent and generates a signal that starts the winding process, the device also has second means which, if tolerance limits of the at least one measured value are not adhered to, recognize that the empty tube is too much deformed and generate an alternating signal that allows the empty tube already inserted to be replaced with a new one Empty tube triggers and the first and second Means are part of a mobile service unit that exchanges the packages for empty tubes.

Wie bereits beschrieben, wird dadurch ermöglicht, die Qualität der Leerhülsen vor Beginn des Spulprozesses zu überprüfen und nur die Leerhülsen zu verwenden, die einen reibungslosen Spul- und Wickelprozess garantieren.As already described, this makes it possible to check the quality of the empty tubes before the start of the winding process and to only use the empty tubes that guarantee a smooth winding and winding process.

In sinnvoller Weise kann die Bestimmung des Rundlaufs und die Ermittlung eines den Rundlauf charakterisierenden Messwertes in den bereits bekannten Kreuzspulen-Leerhülsen-Wechsel integriert werden. Das bedeutet, dass, nachdem im Rahmen des üblichen Kreuzspulen-Leerhülsen-Wechsels durch den Kreuzspulenwechsler die fertig bespulte Kreuzspule aus dem Spulenrahmen entfernt und eine neue Leerhülse in den Spulenrahmen eingelegt wurde, gleichzeitig, beispielsweise während der Erstellung der Fußreservewicklung, der Rundlauf der Leerhülse durch eine Messeinrichtung bestimmt wird.The determination of the concentricity and the determination of a measured value characterizing the concentricity can be integrated in the already known cross-wound bobbin / empty tube change in a meaningful way. This means that after the fully loaded cheese has been removed from the bobbin frame and a new empty tube has been inserted into the bobbin frame as part of the usual cross-bobbin / empty tube change by the cross-bobbin changer, the run-out of the empty tube is carried out at the same time, for example during the creation of the foot reserve winding a measuring device is determined.

Damit hat die erfindungsgemäße Vorrichtung den Vorteil, dass keine kostspieligen Umbauten an der Textilmaschine notwendig werden, sondern dass die erfindungsgemäße Vorrichtung überwiegend auf bereits vorhandene Maschinenelemente einer Kreuzspulen herstellenden Textilmaschine zurückgreift.The device according to the invention thus has the advantage that no costly modifications to the textile machine are necessary, but rather that the device according to the invention mainly relies on existing machine elements of a textile machine producing cross-wound bobbins.

Den Rundlauf während der Erstellung der Fußreservewicklung zu bestimmen, bietet sich an, da dadurch keine zusätzliche Zeit in Anspruch genommen werden muss. Der erhaltene mindestens eine Messwert für den Rundlauf wird mit Toleranzgrenzen verglichen und bei Einhaltung der Toleranzwerte wird ein Signal erzeugt, das den Spulprozess startet.It is advisable to determine the concentricity during the creation of the foot reserve winding, as it does not require any additional time. The at least one measured value obtained for the concentricity is compared with tolerance limits and, if the tolerance values are observed, a signal is generated that starts the winding process.

Um einen Messwert ermitteln zu können und den Rundlauf der Leerhülse zu bestimmen, dient eine Messeinrichtung. Diese Messeinrichtung kann auf unterschiedlichen Messprinzipien beruhen.A measuring device is used to be able to determine a measured value and to determine the concentricity of the empty tube. This measuring device can be based on different measuring principles.

Der Rundlauf der Leerhülse und somit die Qualität der Leerhülse kann auf unterschiedliche Weise bestimmt werden. Eine Möglichkeit ist, die Amplitude des Spulenrahmens zu messen, auf den die Leerhülse einen direkten Einfluss hat. Denn, je deformierter die Leerhülse, desto größer ist die Amplitude des Spulenrahmens und desto unrunder das Laufverhalten der Leerhülse.The concentricity of the empty tube and thus the quality of the empty tube can be determined in different ways. One possibility is to measure the amplitude of the coil frame, on which the empty tube has a direct influence. Than ever The more deformed the empty tube, the greater the amplitude of the bobbin frame and the more uneven the running behavior of the empty tube.

Eine andere Möglichkeit ist, die Geometrie der Leerhülse zu beurteilen. Das bedeutet, dass Bilder der Leerhülse erstellt werden, die wiederum mit hinterlegten Bildern von nicht deformierten bis zu unterschiedlich stark deformierten Leerhülsen abgeglichen werden. Überschreiten die Deformierungen der Leerhülse die Deformierungen eines als grenzwertig festgelegten Bildes, so muss die Leerhülse gegen eine neue ausgetauscht werden, um eine reibungslose Produktion zu gewährleisten.Another possibility is to assess the geometry of the empty tube. This means that images of the empty tube are created, which in turn are compared with stored images of non-deformed to differently deformed empty tubes. If the deformations of the empty tube exceed the deformations of an image defined as borderline, the empty tube must be exchanged for a new one in order to ensure smooth production.

Nachdem der den Rundlauf charakterisierende mindestens eine Messwert ermittelt wurde, wird dieser anschließend mit Toleranzgrenzen verglichen. In Abhängigkeit dieses Vergleiches verbleibt entweder die Leerhülse im Spulenrahmen und der Spulprozess wird gestartet, oder der mindestens eine Messwert übersteigt die Toleranzgrenzen, woraufhin ein Wechselsignal erzeugt wird und der Kreuzspulenwechsler die bereits eingelegte Leerhülse aus dem Spulenrahmen entfernt und eine neue Leerhülse in den Spulenrahmen einlegt.After the at least one measured value characterizing the concentricity has been determined, it is then compared with tolerance limits. Depending on this comparison, either the empty tube remains in the bobbin frame and the winding process is started, or the at least one measured value exceeds the tolerance limits, whereupon an alternating signal is generated and the cheese changer removes the empty tube that has already been inserted from the bobbin frame and inserts a new empty tube into the bobbin frame.

Bevorzugt ist die Vorrichtung im Kreuzspulenwechsler angeordnet. Diese Ausführungsform bietet den Vorteil, dass zur Bestimmung des Rundlaufs durch Ermittlung eines Messwertes eine einzige Messvorrichtung im Kreuzspulenwechsler ausreicht.The device is preferably arranged in the cheese changer. This embodiment offers the advantage that a single measuring device in the cheese changer is sufficient to determine the concentricity by determining a measured value.

Bevorzugt, wie in Anspruch 6 beschrieben, beinhalten die ersten Mittel zum Bestimmen des Messwertes für den Rundlauf einer Leerhülse eine berührungslose Messeinrichtung.Preferably, as described in claim 6, the first means for determining the measured value for the concentricity of an empty tube contain a contactless measuring device.

Die unterschiedlichen Messeinrichtungen sind zwar Bestandteil der Erfindung, aber nicht im Rahmen dieser Anmeldung vollständig aufgezählt und beschrieben, daher wird auf eine detaillierte Ausführung verzichtet. Verschiedenste berührungslose oder nicht berührungslose Messprinzipien sind bekannt, alle durch den Stand der Technik hinreichend offenbart und in verschiedensten Patentanmeldungen ausführlich beschrieben.Although the different measuring devices are part of the invention, they are not fully enumerated and described in the context of this application, and a detailed description is therefore dispensed with. A wide variety of non-contact or non-contact measurement principles are known, all of which are sufficiently disclosed by the prior art and are described in detail in a wide variety of patent applications.

Als berührungslose Messprinzipien können zum Beispiel eine Fotozelle, ein induktiver Sensor oder eine Messung mit einem Laser verwendet werden.For example, a photo cell, an inductive sensor or a measurement with a laser can be used as non-contact measuring principles.

Die DE 1 278 308 offenbart beispielsweise einen optoelektrischen Sensor. Beschrieben wird die Bestrahlung einer Spinnkopshülse mittels einer Lichtquelle, wobei das von der Spinnkopshülse reflektierte Licht mit Hilfe einer Fotozelle erfasst wird. Der von der Spinnkopshülse reflektierte Lichtstrahl beeinflusst abhängig davon, ob auf der Spinnkopshülse ein Wicklungsrest vorhanden ist oder nicht, mehr oder weniger die Fotozelle. Eine rotierende deformierte Leerhülse erzeugt ebenso eine Abweichung der Reflexion wie eine Restbewicklung.The DE 1 278 308 discloses, for example, an optoelectronic sensor. The irradiation of a spinning tube by means of a light source is described, with the light reflected by the spinning tube being detected with the aid of a photocell. The light beam reflected by the spinning end tube influences the photocell to a greater or lesser extent, depending on whether or not there is a winding residue on the spinning end tube. A rotating, deformed empty tube produces a deviation in the reflection as does a residual winding.

Gemäß Anspruch 7 beinhalten die ersten Mittel zum Bestimmen des Messwertes für den Rundlauf einer Leerhülse ein Kamerasystem mit Bildauswertungssoftware.According to claim 7, the first means for determining the measured value for the concentricity of an empty tube contain a camera system with image evaluation software.

Messeinrichtungen dieser Art sind durch den Stand der Technik bekannt, werden häufig in der Textilindustrie verwendet und gehören zu den berührungslosen Messeinrichtungen.Measuring devices of this type are known from the prior art, are often used in the textile industry and belong to the non-contact measuring devices.

Die DE 10 2007 057 921 A1 beschreibt zum Beispiel das automatisierte Identifizieren von Leerhülsen anhand charakteristischer Merkmale der Leerhülsen. Unterschiedliche Farben und Musterungen der Leerhülsen werden erkannt, indem eine so genannte CCD-Kamera Bilder der Leerhülsen aufnimmt und diese in einer Bildbearbeitungseinrichtung mit Bildern hinterlegter Leerhülsen vergleicht. Anstelle einer Musterung würde hier eine Asymmetrie erkannt.The DE 10 2007 057 921 A1 describes, for example, the automated identification of empty tubes based on the characteristic features of the empty tubes. Different colors and patterns of the empty tubes are recognized by a so-called CCD camera taking pictures of the empty tubes and comparing them with images of stored empty tubes in an image processing device. Instead of a pattern, an asymmetry would be recognized here.

In einer anderen vorteilhaften Ausführungsform ist vorgesehen, dass, gemäß Anspruch 8, die ersten Mittel zum Bestimmen des Messwertes für den Rundlauf einer Leerhülse einen mechanischen Taster mit Endschalter beinhalten.In another advantageous embodiment, it is provided that, according to claim 8, the first means for determining the measured value for the concentricity of an empty tube contain a mechanical button with a limit switch.

Ein elektro-mechanischer Taster ist beispielsweise durch die DE 41 10 626 A1 offenbart. In dieser Schrift wird eine Vorrichtung beschrieben, die einen elektromechanischen Hülsenwächter beinhaltet, der die auf der Spinnkopshülse verbliebene Restgarnmenge detektiert. Dazu streift ein Metallkamm seitlich über die Spinnkopshülse. Je nachdem, wie weit der Metallkamm über die Spinnkopshülse streifen kann, werden Rückschlüsse über die Restfüllmenge der Spinnkopshülse gezogen. Ein solcher Taster wäre auch einsetzbar, um die Amplitude der Oberflächenbewegung einer im Spulenrahmen rotierenden Leerhülse zu überwachen.An electro-mechanical button is, for example, through the DE 41 10 626 A1 disclosed. In this document, a device is described which contains an electromechanical tube monitor which detects the amount of residual yarn remaining on the spinning end tube. To do this, a metal comb brushes the side of the spinning head sleeve. Depending on how far the metal comb can slide over the spinning end tube, conclusions can be drawn about the remaining capacity of the spinning end tube drawn. Such a button could also be used to monitor the amplitude of the surface movement of an empty tube rotating in the bobbin frame.

Im Rahmen der Erfindung ist es auch möglich, mehrere Mittel zur Ermittlung des Messwertes für den Rundlauf einer Leerhülse zu verwenden, um die Sicherheit des Ergebnisses zu verbessern.Within the scope of the invention it is also possible to use several means for determining the measured value for the concentricity of an empty tube in order to improve the reliability of the result.

Die vorliegende Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert.The present invention is explained in more detail below with reference to an exemplary embodiment shown in the drawings.

Es zeigen

Figur 1
eine Vorderansicht einer Spulmaschine mit einer Vielzahl von Arbeitsstellen;
Figur 2
schematisch eine Spulstelle mit erfindungsgemäßem Kreuzspulenwechsler.
Show it
Figure 1
a front view of a winding machine with a plurality of work stations;
Figure 2
schematically a winding station with inventive cheese changer.

Die Erfindung wird nachfolgend anhand einer Spulmaschine 1 mit einer Vielzahl von Spulstellen 2 erläutert. Die Erfindung ist aber auch auf andere Kreuzspulen herstellende Textilmaschinen übertragbar.
In Figur 1 ist in Vorderansicht schematisch eine mit der Bezugszahl 1 gekennzeichnete Spulmaschine dargestellt. Derartige Spulmaschinen 1 weisen üblicherweise zwischen ihren Endgestellen 35, 36 eine Vielzahl gleichartiger Arbeitsstellen, vorzugsweise Spulstellen 2, auf. Auf diesen Spulstellen 2 werden, wie bekannt und daher nicht näher erläutert, die auf einer (nicht dargestellten) Ringspinnmaschine produzierten Spinnkopse 9 zu großvolumigen Kreuzspulen 11 umgespult.The invention is explained below with reference to a winding machine 1 with a plurality of winding units 2. The invention can, however, also be transferred to other textile machines producing cross-wound bobbins.
In Figure 1 a winding machine designated by the reference number 1 is shown schematically in a front view. Such winding machines 1 usually have a large number of similar work stations, preferably winding stations 2, between their end frames 35, 36. As is known and therefore not explained in more detail, the spinning cops 9 produced on a ring spinning machine (not shown) are rewound into large-volume cross-wound bobbins 11 on these winding units 2.

Die fertig gestellten Kreuzspulen 11 werden mittels eines selbsttätig arbeitenden Serviceaggregats 23, im Folgenden als Kreuzspulenwechsler bezeichnet, auf eine textilmaschineneigene Kreuzspulentransporteinrichtung 21, wie in Figur 2 dargestellt, überführt und anschließend zu einer maschinenendseitig angeordneten (nicht dargestellten) Spulenverladestation oder dergleichen befördert.The finished cheeses 11 are transferred to a textile machine's own cheeses transport device 21 by means of an automatically operating service unit 23, hereinafter referred to as cheeses, as shown in FIG Figure 2 shown, transferred and then transported to a machine end (not shown) coil loading station or the like.

Derartige Spulmaschinen 1 weisen in der Regel eine Logistikeinrichtung in Form eines Spulen- und Hülsentransportsystems 3 auf. In diesem Spulen- und Hülsentransportsystem 3 laufen, auf Transporttellern 8, Spinnkopse 9 beziehungsweise leere Spinnkopshülsen 34 um.Such winding machines 1 generally have a logistics device in the form of a bobbin and tube transport system 3. In this bobbin and tube transport system 3, spinning cops 9 and empty spinning cops 34 run on transport plates 8.

Des Weiteren verfügen solche Spulmaschinen 1 über eine Zentralsteuereinheit 37, die, beispielsweise über einen Maschinenbus 40, sowohl mit den Arbeitsstellenrechnern 39 der einzelnen Spulstellen 2 als auch mit der Steuereinrichtung 38 des die Spulstellen 2 bedienenden Kreuzspulenwechslers 23 verbunden ist. Der Kreuzspulenwechsler 23 ist mit seinen Fahrwerken 24, 25 auf maschinenlangen Laufbahnen 26, 27, die oberhalb der Spulstellen 2 angeordnet sind, verfahrbar gelagert. Der Kreuzspulenwechsler 23 sorgt nicht nur dafür, dass die auf den Spulstellen 2 fertig gestellten Kreuzspulen 11 ordnungsgemäß auf die Kreuzspulentransporteinrichtung 21 überführt werden, sondern wechselt jeweils auch selbsttätig eine Leerhülse 28 in den Spulenrahmen 18 der betreffenden Spulstelle 2 ein.Furthermore, such winding machines 1 have a central control unit 37, which is connected, for example via a machine bus 40, both to the workstation computers 39 of the individual winding units 2 and to the control device 38 of the cross-bobbin changer 23 serving the winding units 2. The cheese changer 23 is movably supported with its chassis 24, 25 on machine-length tracks 26, 27 which are arranged above the winding units 2. The cheese changer 23 not only ensures that the cheese 11 finished on the winding units 2 are properly transferred to the package transport device 21, but also automatically changes an empty tube 28 into the bobbin frame 18 of the respective winding unit 2.

Die entsprechende Leerhülse 28 entnimmt der Kreuzspulenwechsler 23 dabei einem arbeitsstelleneigenen Leerhülsenspeicher 22, der jeweils oberhalb der Spulstelle 2 angeordnet ist.The cheese changer 23 removes the corresponding empty tube 28 from an empty tube storage unit 22 belonging to the work station, which is arranged above the winding station 2 in each case.

Die relativ wenig Garnvolumen aufweisenden Spinnkopse 9 werden in den Abspulstellungen 10, die sich im Bereich der (nicht dargestellten) Quertransportstrecken befinden, zu großvolumigen Kreuzspulen 11 umgespult.The spinning cops 9, which have relatively little yarn volume, are rewound into large-volume cross-wound bobbins 11 in the unwinding positions 10, which are located in the region of the transverse transport paths (not shown).

Figur 2 zeigt den Zustand, kurz nachdem die volle Kreuzspule 11 gegen eine Leerhülse 28 ausgetauscht wurde. Figure 2 shows the state shortly after the full cheese 11 has been exchanged for an empty tube 28.

Die Leerhülse 28 ist in einem Spulenrahmen 18 gehaltert und drehbar gelagert. Die Leerhülse 28 wird zu einer Kreuzspule 11 gewickelt. Die Leerhülse 28 beziehungsweise die Kreuzspule 11 liegt dazu auf einer Antriebstrommel 12 und wird von dieser über Reibschluss mitgenommen. Die Spulstelle 2 verfügt ferner über eine schwenkbare Saugdüse 14, die bei einer Fadenunterbrechung den mit der Kreuzspule 11 verbundenen Oberfaden erfasst und in die Fadenverbindungseinrichtung 13 einlegt. Der mit dem Spinnkops 9 verbundene Unterfaden wird von dem schwenkbaren, mit Unterdruck beaufschlagten Greiferrohr 15 erfasst und in die Fadenverbindungseinrichtung 13 eingelegt.The empty tube 28 is held in a reel frame 18 and rotatably mounted. The empty tube 28 is wound into a cheese 11. For this purpose, the empty tube 28 or the cheese 11 lies on a drive drum 12 and is carried along by this via a frictional connection. The winding unit 2 also has a pivotable suction nozzle 14 which, in the event of a thread interruption, detects the upper thread connected to the cheese 11 and inserts it into the thread connection device 13. The bobbin thread connected to the spinning cop 9 is of the pivotable, with The gripper tube 15 subjected to negative pressure is detected and inserted into the thread connecting device 13.

Eine Fadenunterbrechung kann zum Beispiel durch einen Reinigerschnitt, einen Fadenbruch oder einen Leerlauf des Spinnkopses 9 bzw. der Vorlagespule ausgelöst werden. Der Reiniger 17 ist im Fadenlauf angeordnet. Er überwacht den Faden 20 auf Fehler und führt gegebenenfalls einen Reinigerschnitt aus. Der Unterfaden wird dann durch den Fadenspanner 16 gehalten und kann durch das Greiferrohr 15 aufgenommen werden. Der Oberfaden läuft auf die Kreuzspule 11 auf und kann von der Saugdüse 14 erfasst werden. Ober- und Unterfaden werden in die Fadenverbindungseinrichtung 13 eingelegt und es wird eine Fadenverbindung durchgeführt. Bei einem Fadenbuch oberhalb des Fadenspanners 16 ist der Ablauf für die Fadenverbindung entsprechend. Bei einem Fadenbruch unterhalb des Fadenspanners 16 oder bei Einwechseln eines neuen Spinnkopses 9 wird zunächst die Saugglocke 19 aktiviert und der Faden auf dem Spinnkops 9 erfasst. Dann kann der Unterfaden vom Greiferrohr 15 übemommen werden. Danach wird mit der Fadenverbindung, wie bereits beschrieben, fortgefahren.A thread interruption can be triggered, for example, by a cleaner cut, a thread break or idling of the spinning cop 9 or the supply package. The cleaner 17 is arranged in the thread run. He monitors the thread 20 for errors and, if necessary, carries out a cleaner cut. The lower thread is then held by the thread tensioner 16 and can be taken up by the looper tube 15. The upper thread runs onto the cheese 11 and can be grasped by the suction nozzle 14. The upper and lower threads are inserted into the thread connecting device 13 and a thread connection is carried out. In the case of a thread book above the thread tensioner 16, the sequence for the thread connection is corresponding. In the event of a thread break below the thread tensioner 16 or when a new spinning cop 9 is replaced, the suction bell 19 is first activated and the thread on the spinning cop 9 is detected. Then the bobbin thread can be taken over by the looper tube 15. Then continue with the thread connection as already described.

Zur Durchführung eines Kreuzspulen-Leerhülsen-Wechsels ist der Kreuzspulenwechsler 23 vorhanden. Der Kreuzspulenwechsler 23 sorgt dafür, dass Kreuzspulen 11, die einen vorbestimmten Durchmesser erreicht haben, auf die Kreuzspulentransporteinrichtung 21 überführt werden und dass anschließend eine Leerhülse 28 in den Spulenrahmen 18 eingewechselt wird. Dazu ist der Kreuzspulenwechsler 23 entlang der Spulmaschine 1 verfahrbar und wird auf den Laufschienen 26 und 27 geführt. Der Kreuzspulenwechsler 23 weist eine Vielzahl von Handhabungseinrichtungen auf, die im Stand der Technik bekannt sind. Aus diesem Grunde sind diese in Figur 2 nur angedeutet. Dazu gehören der Fadenheber 50, der Rahmenöffner 51, der Hülsenzubringer 52 und der Rahmenheber 53. Die Handhabungseinrichtungen werden, wie ebenfalls bekannt, durch Einzelantriebe angetrieben. Dadurch ist es im Prinzip möglich, beliebige Bewegungsabläufe vorzugeben.The package changer 23 is provided for carrying out a cross-bobbin / empty tube change. The cheese changer 23 ensures that packages 11 which have reached a predetermined diameter are transferred to the package transport device 21 and that an empty tube 28 is then exchanged in the package frame 18. For this purpose, the cheese changer 23 can be moved along the winding machine 1 and is guided on the running rails 26 and 27. The cheese changer 23 has a large number of handling devices which are known in the prior art. Because of this, these are in Figure 2 only hinted at. These include the thread lifter 50, the frame opener 51, the tube feeder 52 and the frame lifter 53. As is also known, the handling devices are driven by individual drives. This makes it possible in principle to specify any movement sequences.

Die Spulstelle 2 weist einen Leerhülsenspeicher 22 auf, in dem Leerhülsen 28 für den Kreuzspulen-Leerhülsen-Wechsel bevorratet werden. Der Leerhülsenspeicher 22 könnte aber auch an dem Kreuzspulenwechsler 23 oder zentral angebracht sein.The winding unit 2 has an empty tube store 22 in which empty tubes 28 are stored for the cross-bobbin / empty tube change. The empty tube store 22 could also be attached to the cheese changer 23 or centrally.

Wenn an einer Spulstelle 2 der Textilmaschine die Kreuzspule 11 ihren vorgegebenen Durchmesser erreicht hat, wird über eine (nicht dargestellte) spulstelleneigene Abhebevorrichtung die Kreuzspule 11 von ihrer Antriebstrommel 12 gehoben und läuft gebremst oder ungebremst in den Stillstand aus.When the cheese 11 has reached its specified diameter at a winding station 2 of the textile machine, the package 11 is lifted from its drive drum 12 via a winding station's own lifting device (not shown) and comes to a standstill, braked or unbraked.

Gleichzeitig wird der auf dem Oberbau der Spulmaschinen 1 auf Laufbahnen 26, 27 verfahrbar angeordnete Kreuzspulenwechsler 23 angefordert. Die Anforderung des Kreuzspulenwechslers kann dabei auch präventiv erfolgen, das heißt, das Anforderungssignal kann bereits abgesetzt werden, bevor eine Kreuzspule 11 ihren endgültigen Durchmesser erreicht hat.At the same time, the cross-bobbin changer 23, which is arranged to be movable on tracks 26, 27 on the superstructure of the winding machines 1, is requested. The request of the cheese changer can also take place preventively, that is, the request signal can already be sent before a cheese 11 has reached its final diameter.

Der Kreuzspulenwechsler 23, der, wie vorstehend erläutert, Handhabungsvorrichtungen zum Wechseln einer fertig gestellten Kreuzspule 11 gegen eine Leerhülse 28 aufweist, positioniert sich vor der betreffenden Spulstelle 2. Anschließend wird durch den Rahmenöffner 51 der Spulenrahmen 18 geöffnet. Dabei wird der schwenkbar gelagerte Rahmenarm nach außen gedrückt. Beim Öffnen des Spulenrahmens 18 wird die zwischen den Spulenrahmenarmen gehaltene Kreuzspule 11 freigegeben und gelangt auf das darunter angeordnete Schwenkblech. Das Schwenkblech wird durch den Rahmenheber 53 unterfasst und angehoben. Die Kreuzspule 11 wird dadurch auf die Kreuzspulentransporteinrichtung 21 gerollt.The cheese changer 23, which, as explained above, has handling devices for exchanging a finished cheese 11 for an empty tube 28, is positioned in front of the relevant winding station 2. The frame opener 51 then opens the package frame 18. The pivoting frame arm is pressed outwards. When the bobbin frame 18 is opened, the cross-wound bobbin 11 held between the bobbin frame arms is released and reaches the swivel plate arranged below. The swivel plate is gripped underneath and raised by the frame lifter 53. The cheese 11 is thereby rolled onto the cheese transport device 21.

Aus dem arbeitsstelleneigenen Leerhülsenspeicher 22 wird mittels des nicht dargestellten Hülsenzubringers die Leerhülse 28 entnommen und in den Bereich des Spulenrahmens 18 transportiert.The empty tube 28 is removed from the workstation's own empty tube store 22 by means of the tube feeder (not shown) and transported into the area of the bobbin frame 18.

Der Spulenrahmen 18 wird dabei durch den Rahmenheber 53 sowie den Rahmenöffner 51 in eine Stellung gebracht, in der der nicht dargestellte Hülsengreifer problemlos eine neue Leerhülse 28 in den Spulenrahmen 18 einlegen kann.The bobbin frame 18 is brought into a position by the frame lifter 53 and the frame opener 51 in which the tube gripper (not shown) can easily insert a new empty tube 28 into the bobbin frame 18.

Der Faden 20 wird an der Leerhülse 28 festgelegt. Dazu wird der Unterfaden mittels des Greiferrohres 15 und der Saugdüse 14 bis in den Bereich des Spulenrahmens 18 transportiert und der Faden 20 wird zwischen der Leerhülse 28 und einer Aufnahme des Spulenrahmens 18 eingeklemmt. In Figur 2 ist der Fadenheber 50 so positioniert, dass eine Fußreserve gewickelt wird.The thread 20 is fixed on the empty tube 28. For this purpose, the bobbin thread is transported by means of the gripper tube 15 and the suction nozzle 14 into the area of the bobbin frame 18 and the thread 20 is clamped between the empty tube 28 and a receptacle of the bobbin frame 18. In Figure 2 the thread lifter 50 is positioned so that a foot reserve is wound.

Die Abläufe der Spulmaschine 1, der Spulstelle 2 und des Kreuzspulenwechslers 23 werden von der Zentralsteuereinheit 37, den Arbeitsstellenrechnern 39 und der Steuerung 38 des Kreuzspulenwechslers 23 gesteuert. Diese Steuerungen sind über die Busleitungen 40 und 41 miteinander verbunden.The processes of the winding machine 1, the winding station 2 and the cheese changer 23 are controlled by the central control unit 37, the workstation computers 39 and the controller 38 of the cheese changer 23. These controls are connected to one another via bus lines 40 and 41.

Erfindungsgemäß erfassen erste Mittel während der Erstellung der Fußreserve die Amplitude des Spulenrahmens 18 mittels der Messzelle 31, und ein Messwert, der den Rundlauf der eingelegten Leerhülse 28 charakterisiert, wird gebildet. Dieser Messwert wird über den Maschinenbus 40 an den Arbeitsstellenrechner 39 übermittelt. Daraufhin wird der Messwert mit Grenzwerten verglichen und eine Überschreitung der Toleranzgrenzen indiziert. Aufgrund dessen generieren zweite Mittel ein Wechselsignal, das an die Steuerung 38 des Kreuzspulenwechslers 23 übermittelt wird. Das Wechselsignal bewirkt, dass der Kreuzspulenwechsler 23 die zuvor eingelegte Leerhülse 28 gegen eine neue Leerhülse 28 aus dem Leerhülsenspeicher 22 austauscht. Die Leerhülse 28 mit dem Restfaden wird über die Kreuzspulentransporteinrichtung 21 abtransportiert und kann später aussortiert werden. Der Ablauf des Leerhülsenaustausches ist dabei prinzipiell identisch mit dem Austausch der vollen Kreuzspule 11 gegen die Leerhülse 28, wie er oben beschrieben ist. Auch das Festlegen des Fadens 20 an die Leerhülse 28 erfolgt wie oben beschrieben.According to the invention, first means detect the amplitude of the coil frame 18 by means of the measuring cell 31 while the foot reserve is being created, and a measured value that characterizes the concentricity of the inserted empty tube 28 is generated. This measured value is transmitted to the workstation computer 39 via the machine bus 40. The measured value is then compared with limit values and an excess of the tolerance limits is indicated. On the basis of this, the second means generate an alternating signal which is transmitted to the controller 38 of the cheese changer 23. The change signal causes the cheese changer 23 to replace the previously inserted empty tube 28 with a new empty tube 28 from the empty tube store 22. The empty tube 28 with the remaining thread is transported away via the cheese transport device 21 and can be sorted out later. The sequence of the empty tube exchange is in principle identical to the exchange of the full cheese 11 for the empty tube 28, as described above. The thread 20 is also fixed to the empty tube 28 as described above.

Claims (8)

  1. Method for producing cross-wound packages, wherein the cross-wound packages (11), after having been produced, are each exchanged for an empty tube (28), onto which a new cross-wound package (11) is then wound,
    characterised in that,
    before the winding processes is restarted, at least one measured value is determined, which characterises the radial run-out of the empty tube (28), that, if tolerance limits of the at least one measured value are adhered to, it is detected that the empty tube (28) is not deformed or is deformed only to a tolerable extent, and the winding process is started, and
    that, if tolerance limits of the at least one measured value are not adhered to, it is detected that the empty tube (28) is too highly deformed and the empty tube (28) is exchanged for another empty tube (28).
  2. Method according to claim 1, characterised in that the measured value for the radial run-out of the empty tube (28) is determined without contact.
  3. Method according to claim 1, characterised in that the measured value for the radial run-out of the empty tube (28) is determined by means of a camera system having image evaluation software.
  4. Method according to claim 1, characterised in that the measured value for the radial run-out of the empty tube (28) is determined by means of a mechanical feeler having a limit switch.
  5. Device for producing cross-wound packages, wherein the cross-wound packages (11), after having been produced, are each exchanged for an empty tube (28), onto which a new cross-wound package (11) is then wound,
    characterised in that
    the device has first means for determining at least one measured value characterising the radial run-out,
    that the device is also designed to compare the at least one measured value with tolerance limits,
    that, if tolerance limits of the at least one measured value are adhered to, the device detects that the empty tube (28) is not deformed or is deformed only to a tolerable extent and produces a signal, which starts the winding process,
    that the device has second means, which, if tolerance limits of the at least one measured value are not adhered to, detect that the empty tube (28) is too highly deformed and produce an exchange signal, which triggers the exchange of the already inserted empty tube (28) for a new empty tube (28), and
    that the first and second means are part of a movable service unit (23), which exchanges the cross-wound packages (11) for empty tubes (28).
  6. Device according to claim 5, characterised in that the first means for determining the measured value for the radial run-out of an empty tube (28) comprise a contact-free measuring method.
  7. Device according to claim 6, characterised in that the first means for determining the measured value for the radial run-out of an empty tube (28) comprise a camera system having image evaluation software.
  8. Device according to claim 5, characterised in that the first means for determining the measured value for the radial run-out of an empty tube (28) comprise a mechanical feeler having a limit switch.
EP15001344.9A 2014-06-07 2015-05-06 Method and device for monitoring empty sleeve quality Active EP2952462B1 (en)

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DE102014008524.4A DE102014008524A1 (en) 2014-06-07 2014-06-07 Method and device for monitoring the quality of empty tubes

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JP6635685B2 (en) 2020-01-29
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JP2015229597A (en) 2015-12-21
EP2952462A1 (en) 2015-12-09
DE102014008524A1 (en) 2015-12-17

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