EP1028080B1 - Procédé de fonctionnement d'un poste de travail d'une machine textile pour la fabrication de bobines à spires croisées - Google Patents

Procédé de fonctionnement d'un poste de travail d'une machine textile pour la fabrication de bobines à spires croisées Download PDF

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Publication number
EP1028080B1
EP1028080B1 EP00100170A EP00100170A EP1028080B1 EP 1028080 B1 EP1028080 B1 EP 1028080B1 EP 00100170 A EP00100170 A EP 00100170A EP 00100170 A EP00100170 A EP 00100170A EP 1028080 B1 EP1028080 B1 EP 1028080B1
Authority
EP
European Patent Office
Prior art keywords
thread
contact pressure
apd
winding
working station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00100170A
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German (de)
English (en)
Other versions
EP1028080A2 (fr
EP1028080A3 (fr
Inventor
Rolf Haasen
Hans-Günter Wedershoven
Bernd-Rüdiger Theele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Saurer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saurer GmbH and Co KG filed Critical Saurer GmbH and Co KG
Publication of EP1028080A2 publication Critical patent/EP1028080A2/fr
Publication of EP1028080A3 publication Critical patent/EP1028080A3/fr
Application granted granted Critical
Publication of EP1028080B1 publication Critical patent/EP1028080B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/036—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method for operating a Work station of a textile machine producing cross-wound bobbins with the features mentioned in the preamble of claim 1.
  • Such cross-wound bobbins are textile machines known for example from DE 196 50 932 A1.
  • Such so-called cross-winder machines have one Large number of work stations designed as winding units, which is usually in the longitudinal direction of the winding machine are arranged side by side. For control and monitoring each winding unit is a separate one Assigned to job computer.
  • the single ones Workstation computers are also via a machine bus connected to a central control unit of the winding machine.
  • Such winding machines have a service unit that automatically supplies the workstations in the form of a so-called cross-wound bobbin changer.
  • the cross-wound bobbin handover delivers finished winding bobbins from the bobbin frame of the work station to a machine-long transport device which conveys the cross-wound bobbins to a transfer station arranged on the machine end.
  • the service unit then changes a new empty tube into the coil frame of the job in question.
  • the current one is known from DE 41 29 803 A1 Thread tension of the running thread with one Detect thread tension sensor.
  • Thread tension sensor performed thread tension measurement on running thread becomes a control signal for the thread tensioner provided that one more according to the control signal or less braking effect on the running thread exercises.
  • the thread tensioner has one with a variable pressure force can be applied to the thread brake device.
  • Such a thread tensioner is for example from the DE 41 30 301 A1 known.
  • Thread tension sensor In the thread tension sensor known from DE 41 29 803 A1 the thread is guided over a thread guiding element a head end arranged in a magnetic field Plunger is attached.
  • a Thread tension sensor can use a moving coil current to hold the Position of the moving coil as a direct variable for the Thread tension can be taken as a proportional Dependency between the thread tension and the There is a moving coil current. By evaluating the The coil current can thus be the course of the Monitor thread tension.
  • the invention is therefore based on the object of a method of the generic type with which a high Winding quality of the package can be ensured.
  • the contact pressure of a thread braking device of the thread tensioner acting on the thread is predetermined by the workstation computer and is constantly compared with a predetermined contact pressure limit value, it can be determined immediately when the current contact pressure has reached or exceeded the predetermined limit value and for a predeterminable period of time , In this way, it is reliably ensured that each reaching or exceeding the limit value over a predetermined period of time, which may be caused, for example, by faulty thread guidance, is detected immediately, and appropriate countermeasures can be initiated. This advantageously avoids that a package is too soft and thus incorrectly wound by a faulty thread. Overall, this increases the effectiveness of the winding machine, since corrective action can be taken immediately by early detection of a problem. Furthermore, the method according to the invention ensures that all of the winding packages produced have an essentially constant, high package quality, in particular are wound up with a constant, defined thread tension.
  • the contact pressure of the thread brake device is monitored during a run-up of the bobbin after a splicing process in which the upper thread and the lower thread have been searched and automatically connected.
  • the monitoring of the contact pressure of the Thread brake device also during the regular Winding process is carried out. So here too, if the thread with a winding speed of up to 2,000 m / min runs, by monitoring the contact pressure of the Thread brake device proper guidance of the thread and thus a defined thread tension is ensured become. This also takes place when the contact pressure for one Predeterminable period of time reaches a predetermined limit a controlled thread cut. An interference signal is then generated, the one necessary inspection and / or repair of the concerned Indicates job.
  • Figure 1 shows a side view of a designated 10 Bobbin of a textile machine producing cross-wound bobbins 1.
  • Such textile machines known as automatic winder machines have a large number of juxtaposed Spooling stations (work stations) 10, on which payout spools 12 (hereinafter also called spinning bobbins) too large Package 14 (hereinafter also referred to as cheese) be rewound.
  • the spinning heads 12 pass over here a transport device 16 to the individual winding units 10.
  • the transport device 16 comprises, as is known per se, a Plenty, not specified in detail Transport routes on which, on transport plates 20 attached, spinning heads 12 or empty tubes 18 conveyed become.
  • a thread 22 is drawn off.
  • the one withdrawn from the spinning cop 12 Thread 22 passes on its way to the package 14 in Thread running direction 24 first a lower thread sensor 28, the via a signal line 30 with a workstation computer 32 connected is.
  • this lower thread sensor 28 for example, after a thread break or a controlled thread cut Initiation of the upper thread search, determined whether at all Bobbin thread 34 is present.
  • a thread tensioner 36 is located above the lower thread sensor 28 arranged.
  • the thread tensioner 36 comprises, as in FIG. 2 is indicated, two brake actuators 114, 116, which on the Apply a contact pressure APD to the running thread 22.
  • the Thread tensioner 36 is used for this purpose Workstation computer 32 defined via a control line 38 driven.
  • Thread end connection device 40 for example as pneumatic splicer is arranged.
  • the Splice device 40 is also via a signal line 42 connected to the workstation computer 32.
  • the course of the thread path is to determine Yarn defects a thread cleaner 44 is arranged.
  • the signals of the thread cleaner 44 are for evaluation via a signal line 48 Job computer 32 supplied.
  • a Yarn error is from the job computer 32 via a Control line 50 actuates a cutting device 52 and the Thread 22 separated.
  • the thread tension sensor 54 is a Signal line 56 also with the workstation computer 32 connected.
  • the thread tension of the thread 22 is monitored by the yarn tension sensor 54 continuously and according to the supplied by the yarn tension sensor 54 yarn tension signal Fsp is controlled via the work station computer 32 of the yarn tensioner 36th That is, the brake plate 114, 116 of the yarn tensioner 36 urging the thread 22 with a contact pressure APD is, which ensures that the running thread 22 has a substantially constant tensile yarn force Fsp is set, which ensures a uniform packing density of the zufertigenden cheese fourteenth
  • the paraffinizing device 46 follows in the thread running direction 24 finally a thread guide 58 over which the thread 22 opens a winding drum 60, a so-called grooved drum, runs on, the for a crosswise laying of the thread 22 after the Type of winding "wild winding" ensures.
  • the cheese 14 is via a sleeve, not shown, in a pivotable mounted coil frame 64 rotatably supported and lies with its outer circumference on the single motor driven Spool drum 60, which the cheese 14 via friction entraining.
  • the winding unit 10 also has a suction nozzle 66 and a Gripper tube 68.
  • the gripper tube 68 is used for gripping of the lower thread 34 originating from the spinning cop 12, which at a controlled thread cleaning cut or at a Thread break above the thread tensioner usually in the Thread tensioner 36 is held. That about an axis of rotation 72 pivotable gripper tube 68 is at a central Vacuum supply 76 connected to the winding machine 1, the communicates with a vacuum source 78.
  • the Gripper tube mouth moves along the dashed line marked trajectory 74.
  • the pivoting of the Gripper tube 68 is carried out by the workstation computer 32 controlled, via a known and therefore not closer shown drive device.
  • the suction nozzle 66 serves to receive one on the cheese 14 accumulated upper thread 80.
  • the suction nozzle 66 is an axis of rotation 82 can be pivoted such that its mouth 84 traverses a trajectory 86.
  • the suction nozzle 66 is also connected to the vacuum supply 76.
  • the Swiveling movement of the suction nozzle 66 is over the Job computer 32 by controlling one per se known drive device, not shown, preferably a cam disk package.
  • the winding unit 10 includes other mechanical, electrical and pneumatic components under the present Description should not be explained in more detail.
  • the workstation computer 32 and its connection with the thread tensioner 36, the Thread tension sensor 54 and thread cutting device 52 shown.
  • Thread tensioner 36 is known per se and for example in the DE 195 26 901 A1 described in detail.
  • thread tension sensor 54 Device for use, as for example by the DE 41 29 803 A1 is also known.
  • An electrically controllable thread cutting device like the one below is indicated by the reference number 52, is in Textile engineering for a long time state of the art.
  • Such Facilities usually have one by one Electromagnet selectively extendable cutting edge, which at Power supply to the electromagnet pressed against a stop the thread passing in front of the cutting edge reliably severed.
  • the workstation computer 32 which in the exemplary embodiment a thread tension setpoint generator 90, a contact pressure limit value transmitter 100, a controller 99, a comparator 92 as well as one equipped with a timer 96 Comparator 102 has a signal line 56 with the thread tension sensor 54 via a line 50 with the thread cutting device 52 and via a line 38 connected to the thread tensioner 36.
  • the comparator 92 will thereby is over the over the signal line 56 with the yarn tension and actual values Fsp via the signal line 91 with the yarn tension target values supplied to Fsp.
  • the generated comparator signal passes through the signal line 95 to the controller 99, which ensures about the Stel line 38 that at the yarn tensioner 36, a contact pressure APD is pending, a constant tensile yarn force Fsp is ensured.
  • the controller signal is also fed via line 97 to comparator 102, which is preferably equipped with a timer 96.
  • the comparator 102 is also connected via a line 101 to a contact pressure limit indicator 100 and is connected on the output side to the thread cutting device 52 via the line 50.
  • the thread 22 may not between the brake actuators 114, 116, but before, runs behind or next to these brake actuators. Because such Misuse of the thread 22 by the operating personnel is often not is noticed, in these cases there is a risk that the Thread 22, although the brake plate with maximum contact pressure are employed with a thread tension that is too low is wound up, resulting in a faulty because too soft spooled package 14 leads.
  • Such a misalignment of the thread 22 can occur during the regular winding operation, for example by The thread will come out due to a thread loop. However, the thread cannot be misdirected proper reinsertion of the thread in the course of a Thread connection process after a thread cut or Thread breakage arise.
  • the thread tension of the running thread 22 is continuously sensed via the thread tension sensor 54 and the determined thread tension actual value Fsp is compared in the comparator 92 with a thread tension setpoint Fsp Soll , which is specified by a thread tension setpoint generator 90.
  • the comparator 92 is connected to a controller 99, which ensures that the required contact pressure APD is always present on the thread tensioner 36.
  • the corresponding controller signal which corresponds to a certain contact pressure APD , the brake actuator 114, 116 of the thread tensioner 36, is also applied to a further comparator 102, which is equipped with a timer 96.
  • the comparator 102 is also connected on the input side to a contact pressure limit value sensor 100, which defines the maximum permissible contact pressure APD max . If the comparator 102 determines in its comparison that the contact pressure APD is a predetermined period of time t 2 -t 1 the predetermined maximum contact pressure APD max is reached or exceeded, the thread cutting device 52 is activated via the line 50 and the running thread 22 is separated.
  • the workstation computer 32 solves the following Actions from:
  • the bobbin frame 64 is immediately lifted from the winding drum 60 and thereby prevents the thread end (upper thread 80) running onto the circumferential surface of the cheese 14 from being rolled in by the winding drum 60 in such a way that it is no longer later through the suction nozzle 66 is recordable.
  • the cheese 14 is also braked to a standstill by a coil brake (not shown).
  • the lower thread sensor 28 detects whether there is a lower thread 34. With a positive signal from the lower thread sensor 28, a thread end connection process is started. This means that the hook tube 68 is first activated in such a way that its mouth enters the thread path of the thread 22 and engages the lower thread 34 fixed on the thread tensioner 36.
  • the looper tube 68 is then pivoted along the movement path 74, so that the gripped lower thread 34 is inserted into the splicing device 40.
  • the upper thread take-up is started subsequently or simultaneously.
  • the mouth 84 of the suction nozzle 66 is pivoted to the circumference of the cheese 14 and the winding drum 60 is driven against the winding direction, so that the cheese 14 rotates backwards.
  • the upper thread 80 is picked up by the surface of the package 14 and optionally cleaned by means of a thread cutting and sensor device (not shown) arranged within the suction nozzle 66, that is to say faulty because it is too soft , wound on the package 14 piece of thread is cut out and suctioned off.
  • the splicing device 40 is then caused to connect the lower thread 34 to the upper thread 80. Then, initiated by the workstation computer 32, the bobbin frame 64 is lowered again, so that the cheese 14 comes into contact with the winding drum 60 again and the winding process is started again.
  • the resulting thread tension (thread tension) is immediately detected by the thread tension sensor 54 and is fed via the signal line 56 as a thread tension signal Fsp to the workstation computer 32, which also carries out the above-described checking of the contact pressure APD of the thread tensioner 36.
  • Monitoring the contact pressure of the thread tensioner 36 does not only take place while the job is ramping up 10 after a thread connection process, that is, at a relatively low winding speed of the thread 22 of for example 100 m / min, but also during regular Winding process in which, for example, winding speeds of about 2000 m / min of thread 22 can be achieved.
  • the workstation computer 32 If it is determined during regular winding operation that the contact pressure APD has reached or exceeded a predetermined limit value for a predetermined period of time, the workstation computer 32 also ensures here that a controlled thread cutting and a shutdown of the winding station 10 concerned take place.
  • the thread tensioner 36 ensures that faulty (too soft) wound thread 22 is recognized immediately and that a fault rectification can be initiated immediately. Overall, the method according to the invention thus ensures the quality of the packages 14 produced by the winding machines 1.

Claims (7)

  1. Procédé de fonctionnement d'un poste de travail (10) d'une machine textile pour la fabrication de bobines à spires croisées (1), avec un capteur de tension de fil (54) branché à un ordinateur de poste de travail (32) pour la surveillance de la tension de fil d'un fil (22) circulant d'une bobine de déroulement (12) à une bobine d'enroulement (14), de même qu'avec un tendeur de fil (36) pour régulariser la tension de fil, dans lequel l'ordinateur de poste de travail (32) détermine la force d'application (APD) d'un dispositif de freinage de fil (114, 116) du tendeur de fil (36) agissant sur le fil (22) en fonction de la tension de fil déterminée par le capteur de tension de fil (54),
       caractérisé en ce que
       l'ordinateur de poste de travail (32) compare la pression d'application (APDist) à une valeur limite prédéterminée de la pression d'application (APDmax) et, quand la valeur limite est atteinte ou dépassée pendant un intervalle de temps prédéfini (t2-t1), interrompt le processus de bobinage.
  2. Procédé selon la revendication 1, caractérisé en ce que la surveillance de la pression d'application (APDist) s'effectue pendant l'accélération du poste de travail (10) après l'exécution d'un processus d'épissure.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que, quand la valeur limite de la pression d'application (APDmax) est atteinte ou dépassée pendant l'intervalle de temps prédéfini (t2-t1), un sectionnement contrôlé du fil est effectué, une longueur prédéfinissable du fil (22) est rembobinée depuis la bobine d'enroulement (14) et est coupée et, après l'exécution d'un nouveau processus d'épissure, le processus de bobinage est poursuivi.
  4. Procédé selon la revendication 3, caractérisé en ce que les étapes du procédé sont répétées au moins une fois et en ce que, lors d'une nouvelle atteinte de la valeur limite de la pression d'application (APDmax) pendant l'intervalle de temps prédéfini (t2-t1), le poste de travail (10) est mis en état de blocage, c'est-à-dire est arrêté.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la surveillance de la pression d'application (APDist) a lieu pendant le processus régulier de bobinage du poste de travail (10).
  6. Procédé selon la revendication 5, caractérisé en ce que, lors de l'atteinte ou du dépassement de la valeur limite de la pression d'application (APDmax) pendant l'intervalle de temps prédéfini (t2-t1), le poste de travail (10) est mis en état de blocage, c'est-à-dire est arrêté.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'intervalle de temps prédéfini (t2-t1) est compris entre 1 s et 3 s, en particulier est égal à 2 s.
EP00100170A 1999-02-12 2000-01-11 Procédé de fonctionnement d'un poste de travail d'une machine textile pour la fabrication de bobines à spires croisées Expired - Lifetime EP1028080B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905860 1999-02-12
DE19905860A DE19905860A1 (de) 1999-02-12 1999-02-12 Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine

Publications (3)

Publication Number Publication Date
EP1028080A2 EP1028080A2 (fr) 2000-08-16
EP1028080A3 EP1028080A3 (fr) 2000-11-08
EP1028080B1 true EP1028080B1 (fr) 2003-10-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100170A Expired - Lifetime EP1028080B1 (fr) 1999-02-12 2000-01-11 Procédé de fonctionnement d'un poste de travail d'une machine textile pour la fabrication de bobines à spires croisées

Country Status (5)

Country Link
US (1) US6340129B1 (fr)
EP (1) EP1028080B1 (fr)
JP (1) JP4531906B2 (fr)
DE (2) DE19905860A1 (fr)
TR (1) TR200000387A2 (fr)

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EP0875479A1 (fr) * 1997-04-04 1998-11-04 Schärer Schweiter Mettler AG Procédé pour améliorer le processus de bobinage et station de bobinage pour la mise en oeuvre du procédé

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EP1028080A2 (fr) 2000-08-16
DE50004117D1 (de) 2003-11-27
TR200000387A3 (tr) 2000-09-21
EP1028080A3 (fr) 2000-11-08
DE19905860A1 (de) 2000-08-17
TR200000387A2 (tr) 2000-09-21
US6340129B1 (en) 2002-01-22
JP2000238963A (ja) 2000-09-05
JP4531906B2 (ja) 2010-08-25

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