EP2952462B1 - Procédé et dispositif destinés à la surveillance de la qualité de tubes vides - Google Patents

Procédé et dispositif destinés à la surveillance de la qualité de tubes vides 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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European Patent Office
Prior art keywords
empty tube
measured value
empty
tube
cross
Prior art date
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Application number
EP15001344.9A
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German (de)
English (en)
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EP2952462A1 (fr
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/fr
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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)

Claims (8)

  1. Procédé pour fabriquer des bobines croisées, sachant que les bobines croisées (11) sont remplacées, après leur fabrication, chacune par un tube vide (28) sur lequel une nouvelle bobine croisée (11) est alors enroulée, caractérisé en ce que,
    avant chaque nouveau démarrage du processus d'enroulement, au moins une valeur de mesure est calculée et caractérise la circularité du tube vide (28). Il est détecté que, en cas de respect des limites de tolérance de la valeur de mesure évoquée, le tube vide (28) n'est pas déformé ou seulement dans une mesure tolérable et le processus d'enroulement est démarré et,
    en cas de non respect des limites de tolérance d'au moins une valeur de mesure, il est détecté que le tube vide (28) est trop déformé et que le tube vide (28) est remplacé par un autre tube vide (28).
  2. Procédé selon la revendication 1, caractérisé en ce que le calcul de la valeur de mesure pour la circularité du tube vide (28) est réalisé sans contact.
  3. Procédé selon la revendication 1, caractérisé en ce que le calcul de la valeur de mesure pour la circularité du tube vide (28) est réalisé à l'aide d'un système de caméra avec un logiciel d'évaluation d'image.
  4. Procédé selon la revendication 1, caractérisé en ce que le calcul de la valeur de mesure pour la circularité du tube vide (28) est réalisé par un palpeur mécanique avec interrupteur de fin de course.
  5. Dispositif pour fabriquer des bobines croisées, sachant que les bobines croisées (11) sont remplacées, après leur fabrication, chacune par un tube vide (28) sur lequel une nouvelle bobine croisée (11) est enroulée,
    caractérisé en ce que
    le dispositif possède un premier moyen de calcul d'au minimum une valeur de mesure caractérisant la concentricité du tube,
    le dispositif est, de plus, conçu pour comparer cette valeur de mesure avec les limites de tolérance,
    le dispositif détecte, en cas de respect des limites de tolérances de la valeur de mesure évoquée, que le tube vide (28) n'est pas déformé ou seulement dans une mesure tolérable et génère un signal qui démarre le processus d'enroulement,
    le dispositif possède un deuxième moyen qui détecte, en cas de non respect des limites de tolérance d'au moins une valeur de mesure, que le tube vide (28) est trop déformé et génère un signal de remplacement déclenchant le remplacement du tube vide (28) déjà inséré par un nouveau tube vide (28) et en ce que les premier et second moyens font partie d'un module de service mobile (23) qui remplace les bobines croisées (11) par des tubes vides (28).
  6. Dispositif selon la revendication 5, caractérisé en ce que le premier moyen de calcul de la valeur de mesure pour la circularité d'un tube vide (28) contient une méthode de mesure sans contact.
  7. Dispositif selon la revendication 5, caractérisé en ce que le premier moyen de calcul de la valeur de mesure pour la circularité d'un tube vide (28) contient un système de caméra avec un logiciel d'évaluation d'image.
  8. Dispositif selon la revendication 5, caractérisé en ce que le premier moyen de calcul de la valeur de mesure pour la circularité d'un tube vide (28) contient un palpeur mécanique avec interrupteur de fin de course.
EP15001344.9A 2014-06-07 2015-05-06 Procédé et dispositif destinés à la surveillance de la qualité de tubes vides Active EP2952462B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014008524.4A DE102014008524A1 (de) 2014-06-07 2014-06-07 Verfahren und Vorrichtung zur Überwachung der Leerhülsenqualität

Related Parent Applications (1)

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DE102014008524 Previously-Filed-Application 2014-06-07

Publications (2)

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EP2952462A1 EP2952462A1 (fr) 2015-12-09
EP2952462B1 true EP2952462B1 (fr) 2020-09-02

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EP (1) EP2952462B1 (fr)
JP (1) JP6635685B2 (fr)
CN (1) CN105151893B (fr)
DE (1) DE102014008524A1 (fr)

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DE102018118942A1 (de) * 2018-08-03 2020-02-06 Maschinenfabrik Rieter Ag Verfahren zur Herstellung von Kreuzspulen an einer Vielzahl in Längsrichtung einer Textilmaschine nebeneinander angeordneter Arbeitsstellen sowie Textilmaschine zur Herstellung von Kreuzspulen
JP2020179985A (ja) * 2019-04-26 2020-11-05 村田機械株式会社 糸巻取機及び糸掛け方法
EP4051611A4 (fr) * 2019-11-01 2023-11-08 Shaw Industries Group, Inc. Appareil de changement de cannettes et véhicule à guidage automatique le comprenant
CN114852787A (zh) * 2022-04-27 2022-08-05 北京中丽制机电气有限公司 一种卷绕机生产线的落筒控制系统及方法

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JP2015229597A (ja) 2015-12-21
DE102014008524A1 (de) 2015-12-17
CN105151893B (zh) 2018-02-13
JP6635685B2 (ja) 2020-01-29
CN105151893A (zh) 2015-12-16
EP2952462A1 (fr) 2015-12-09

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