EP2468670B1 - Verfahren zum Betreiben einer Spulmaschine und Spulmaschine - Google Patents

Verfahren zum Betreiben einer Spulmaschine und Spulmaschine Download PDF

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Publication number
EP2468670B1
EP2468670B1 EP20110009261 EP11009261A EP2468670B1 EP 2468670 B1 EP2468670 B1 EP 2468670B1 EP 20110009261 EP20110009261 EP 20110009261 EP 11009261 A EP11009261 A EP 11009261A EP 2468670 B1 EP2468670 B1 EP 2468670B1
Authority
EP
European Patent Office
Prior art keywords
thread
sensor
thread tension
failure
tension
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.)
Not-in-force
Application number
EP20110009261
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German (de)
English (en)
French (fr)
Other versions
EP2468670A3 (de
EP2468670A2 (de
Inventor
Michael Iding
Helmut Kohlen
Hans-Günter Wedershoven
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
Original Assignee
Saurer Germany GmbH and Co KG
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Filing date
Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2468670A2 publication Critical patent/EP2468670A2/de
Publication of EP2468670A3 publication Critical patent/EP2468670A3/de
Application granted granted Critical
Publication of EP2468670B1 publication Critical patent/EP2468670B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B65H59/385—Regulating winding speed
    • 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
    • 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
    • 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 winding machine and a winding machine with a plurality of workstations, each of which wind a thread from a spinning cop to a cross-wound bobbin, wherein in the course of the thread in each case a sensor which measures a thread tension representing size, and a thread tensioner thread tensioning means are arranged and the thread tension is controlled by comparing the measured magnitude representing the thread tension with a target value of the thread tension representative quantity and depending on the comparison, an adjusting signal for the thread tension adjusting thread tensioner is generated in which a failure of the sensor is detected and then the thread tension is controlled.
  • the yarn tension or the thread tension can be controlled or regulated.
  • no sensor is required and the thread tensioner, for example, a constant control signal can be specified.
  • a sensor is required which measures a size representing the thread tension.
  • thread tension sensors Common are so-called thread tension sensors.
  • the setting as to whether the thread tension is to be regulated or controlled can be specified by the operator. It makes sense to specify such settings for one game. A lot is formed by such jobs on which the same yarns are wound on cheeses with identical properties.
  • the operator can also specify a control if a yarn tensile force sensor is present. In this case, the yarn tension sensor is deactivated or at least the measured values are not used by the control unit.
  • the pattern wrapper can not be used any further since the wound yarn was inevitably damaged by the tension sensor. If necessary, yarn other than the one to be processed later must be used for the pattern winding if thread breakage is frequently caused by contact with the tension sensor. The need to make a pattern wrapper also leads to productivity losses. Such a solution makes only among the special, in the JP 2009-242097 A described, circumstances sense.
  • the thread tension increases without a corresponding influence.
  • the thread tension can be regulated in the manner described above by means of a thread tensioner.
  • the tensioner pressure is then reduced according to the Abspul myselfen increase in the thread tension.
  • the thread tension can also be influenced by the winding speed. For this reason it is for example from the DE 37 33 597 A1 It is known to control the winding speed as a function of the amount of residual thread on the spinning cop. Such a control of the winding speed can be done alternatively or in addition to the control of the thread tension by means of a thread tensioner.
  • the thread tensioner With a control of the thread tension, it is also possible to change the winding speed only when compliance with the predetermined thread tension by means of the thread tensioner is no longer possible. With decreasing remaining thread length on the spinning cop, the thread tension would increase without further influence. Therefore, at the beginning of the Kopsappel the thread tensioner will exert a stronger pressure and lower the pressure in the course of Kopsappel. It is possible that the thread tensioner comes to the point where a further reduction of the pressure is no longer possible. This means that the thread tension would increase. To prevent this, you can lower the winding speed. Preferably, the speed is lowered gradually. In the first step, the speed is reduced by a predetermined amount, the thread tension decreases and the thread tensioner must increase its pressure again so that the thread tension remains constant. The thread tension can now be controlled again by means of a thread tension sensor and a thread tensioner. Only when the pressure of the thread tensioner has fallen back to a minimum value, in a second step, the winding speed is further lowered.
  • a variable representing the residual thread length on the spinning cops is detected; depending on the residual thread length on the spinning cops, empirical values for the actuating signal are determined from at least one actuating signal detected during winding with controlled thread tension and controlled by the thread tensioner for control of the thread tension in case of failure of a sensor, the previously determined empirical values as a function of the residual thread length on the spinning cop used as a control signal.
  • the operation of a workstation whose sensor has failed or is disturbed can be ensured.
  • the quality of the substitute values used in the event of sensor failure is guaranteed.
  • a high productivity of the winder is ensured.
  • the actuating signal of the thread tensioner of the affected workstation can be individually adjusted depending on the respective state at the workstation even if the sensor fails. The quality of the wound cheese is thus ensured even with a longer failure of a sensor continues.
  • control signals of several work stations are recorded to determine the empirical values, the quality of the substitute values is further improved. In the optimal case, the control signals of all workplaces in operation are recorded.
  • the threads of spinning cops are unwound and the unwound from the spinning cords thread length is used as the amount of residual thread on the Spinnkops representing size.
  • the amount of residual thread itself is difficult to determine during the winding operation.
  • the total amount of thread on the spinning cop is frequently known anyway from the upstream process, namely the production on a ring spinning machine, or can easily be determined, for example, on the basis of the cop weight and the specific thread weight.
  • To determine the withdrawn thread length simple measuring methods are known. As long as the spinning cops used have the same amount of thread, the withdrawn thread length can be used directly as a reference size. A conversion of the unwound thread length in the amount of residual thread is not required.
  • the empirical values which are used to control the thread tension in the event of failure of the sensor of a workstation are determined from the control signal detected during the unwinding of at least one spinning cop of this workstation before the failure of the sensor.
  • the empirical values that are used to control the thread tension in the event of a failure of the sensor of a workstation can be determined from the control signal detected during the unwinding of the last spinning cop of this workstation before the failure of the sensor.
  • the empirical values which are used to control the thread tension in the event of a failure of the sensor of a workstation represent average values of the control signals of a plurality of spin cops uncoiled on this workstation.
  • the empirical values which are used to control the thread tension in the event of failure of the sensor of a workstation are mean values of the control signals of workstations of the same lot.
  • the empirical values that are used to control the thread tension in the event of a failure of the sensor of a workstation can be mean values of all detected control signals of the work stations of the same batch.
  • the empirical values that are used to control the thread tension in case of failure of the sensor of a job average values of the control signals detected when unwinding the last cops on several jobs of the lot.
  • the failure of a sensor is displayed. This informs the operator and can initiate measures to remedy the failure.
  • the winding speed is set in dependence on the setting of the thread tensioner, it is advantageous to acquire experience values for the winding speed during the winding with controlled thread tension as a function of the remaining thread length on the spinning heads a failure of a yarn tension sensor to use the previously determined empirical values for the winding speed in addition to the actuating signal for the tensioner as a function of the remaining thread length for setting the winding speed. Otherwise there is a risk that the empirical values used for the setting signal of the thread tensioner do not match the respective winding speed.
  • a winder for carrying out the method according to the invention with a plurality of jobs which are each designed to wind a thread from a spinning cop to a cross-wound bobbin, further proposed, wherein in the course of the thread each having a sensor for measuring a yarn tension representing Size and a thread tensioner, which gives the yarn a thread tension, are provided and control means for controlling the thread tension, which are adapted to compare the yarn tension representing measured size with a target value of the yarn tension representing size and in dependence on the comparison To generate control signal for the thread tensioner for adjusting the thread tension, wherein the control means are adapted to control the thread tension in case of failure of the sensor.
  • control means for detecting a variable representing the residual thread length on the spinning cops, for determining empirical values for the actuating signal as a function of the size representing the remaining thread length on the spinning cops from at least one control signal detected during winding with controlled thread tension and if a sensor fails Use of at least a part of the empirical values as a function of the size representing the residual thread length on the spinning cop for controlling the thread tension for the thread tensioner as a control signal.
  • control means comprise a workstation controller and / or a central control unit.
  • control of the thread tension and the detection of the control signals to determine the empirical values by means of a workstation control of the respective job.
  • the determination of the empirical values advantageously takes place by means of the workstation control or a central control unit.
  • the Fig. 1 shows a winding machine 1 with a plurality of jobs 2, which are arranged between the end frames 55, 56 of the winder 1.
  • the winding machine has a central control unit 50, which is connected via a bus system 60 to the workstation controls 40.
  • the central control unit has a keyboard 52 and a display 51 for operation and display.
  • Fig. 2 is shown in side view schematically a job 2 during the winding process.
  • Original bobbins usually produced on ring spinning machines spinning cops 9, which have relatively little yarn material, rewound to large-volume cheeses 11.
  • the finished cheeses 11 are then transferred by means of an automatically operating service unit 57, such as a cheese changer, on a machine-spooled cross-bobbin transport device 21 and transported to a machine loading side arranged Spulenverladestation or the like.
  • an automatically operating service unit 57 such as a cheese changer
  • Such winding machines 1 are also equipped either with a round magazine, can be stored in the spinning cops, or the automatic packages have a logistics device in the form of a bobbin and tube transport system 3.
  • a bobbin and tube transport system 3 then run spinning cops 9 and empty tubes 34, which are arranged in a vertical orientation on transport plates 8.
  • the reversible drivable storage section 5 one of the leading to the jobs 2 transverse transport sections 6 and the sleeve return path 7 are shown.
  • the delivered spinning cops 9 are thereby initially positioned in an unwinding position 10, which is located in the region of the transverse transport sections 6 at the work stations 2, and then rewound.
  • the individual jobs 2 have for this purpose, as is well known and therefore only hinted at different Fadenüberwachungs- and treatment facilities that not only ensure that the spinning cops 9 can be rewound to bulky packages 11, but also ensure that the thread 30th is monitored for thread defects during the rewinding process and detected thread defects are cleared out.
  • Each work station 2 has a workstation control 40, which via the only indicated control lines with the thread monitoring and treatment facilities is connected and connected via the bus system 60 to the central control unit 50 and the control device 58 of the service unit 57.
  • the work stations 2 each have a winding device 24, which has a creel 18, which is movably mounted about a pivot axis 19 and is equipped with a bobbin drive device 26 and a thread-switching device 28.
  • the cheese 11 is located during the winding process with its surface on a drive roller 26 and is carried along by this frictional engagement.
  • the drive roller 26 is acted upon via a variable speed, reversible (not shown) drive means.
  • the traversing of the thread 30 during emergence onto the cross-wound bobbin 11 takes place by means of a thread-changing device 28, which has a finger thread guide 29 in the present exemplary embodiment.
  • the workstation 2 furthermore has a thread connecting device, preferably a pneumatically operated splicing device 13 with a cutting device 43, a lower thread sensor 22, a thread tensioner 14, a thread cleaner 15 with a thread cutting device 17, a yarn tension force sensor 20 and a paraffining device 16.
  • a thread connecting device preferably a pneumatically operated splicing device 13 with a cutting device 43, a lower thread sensor 22, a thread tensioner 14, a thread cleaner 15 with a thread cutting device 17, a yarn tension force sensor 20 and a paraffining device 16.
  • the job 2 is equipped with a suction nozzle 12 and a gripper tube 25, both defined are acted upon by negative pressure.
  • the suction nozzle 12 and the gripper tube 25 are connected to a machine-length vacuum crossbar 32, which in turn is in communication with a vacuum source 33.
  • a thread catching nozzle 23 which is arranged offset somewhat rearwardly with respect to the thread running path, is positioned so that the thread 30 runs in front of its mouth 42 during the winding process.
  • the thread-catching nozzle 23 is likewise connected to the vacuum cross-member 32 via an air switch 27.
  • the air switch 27 in this case has a connecting piece 35 for the thread catching nozzle 23 and a relatively voluminous discharge port 36, the mouth of which is hermetically sealed during the regular winding operation by the suction nozzle 12 positioned in the waiting position P.
  • An opening of the discharge nozzle 36 by pivoting the suction nozzle 12 ensures that the upcoming at the thread catching nozzle 23 negative pressure collapses.
  • the thread tension is regulated at each workstation.
  • This regulation is in Fig. 3 schematically illustrated by a block diagram.
  • a desired value v is specified for the yarn tension. This can be specified by the operator, for example, at the central control unit 50 for a batch and transmitted by means of the bus system 60 to the workstation controls 40 of the jobs belonging to this lot 2.
  • the actual value y of the yarn tension is measured by means of the yarn tension sensor 20. In order to compare the setpoint value v and the actual value y, the difference e between both variables is determined. For this purpose, the measured actual value y applied with a negative sign and the desired value v are supplied to the adder 48.
  • the thus determined difference e is the input signal for a controller 45, which then provides the actuating signal u for the thread tensioner 14.
  • the controller 45 and the comparator with the adder 48 is in the present embodiment, a part of the workstation control 40. In principle, it is also possible that the control in the central control unit is realized.
  • the thread tensioner 14 in the block diagram of Fig. 3 downstream block 46 is referred to in the control technology as a route.
  • the route 46 includes the parts of the job that cause a certain thread tension or thread tension on the current thread under the influence of the thread tensioner.
  • the setpoint value or the measured actual value can also be the thread tension instead of the thread tension. If necessary, the thread tension must be converted into a thread tension or vice versa.
  • the Fig. 4 illustrates the effect of the regulation described above.
  • the control signal u for the thread tensioner 14 on one side and the desired value v or the actual value y of the yarn tension on the other side over time or over the unwound from the spinning cop yarn length is plotted. It is assumed here by a constant winding speed, so that the unwound thread length of time is proportional. Furthermore, it is assumed that an ideal control without stationary control deviation, so that the setpoint v and the actual value y are identical. Furthermore, the actuating signal u is proportional to the tensioning pressure exerted by the thread tensioner.
  • the winding speed need not, as assumed above, remain constant over the entire Kopsumble. If the thread tensioner can not lower the pressure any further, the winding speed is gradually reduced to one again To allow control of the thread tension by means of the thread tensioner as an actuator. In the block diagram of Fig. 3 the influence of the change in the winding speed is symbolized by the disturbance d.
  • the control signals u of the thread tensioner 14 are detected and stored as a function of the length of the thread unwound from the respective spinning cop.
  • the respective winding speed is also stored.
  • These values can be stored in a memory of the workstation control or in a memory of the central control unit in a power-failure-proof manner.
  • the saving can take place, for example, in the form of a table. This table then assigns to a unwound thread length a value for the control signal u and a winding speed.
  • the unwound thread length corresponds to a certain amount of residual thread on the spinning cop.
  • the unwound thread length can be determined, for example, in a manner known per se from the revolutions of the driven roller 26.
  • the revolutions of the drive roller 26 are detected and stored in a counter. This must then be reset every time the spinning head is changed. The number of revolutions is then proportional to the unwound thread length. This value can be assigned directly to the respective value of the control signal. A conversion into a thread length based on the drive roller diameter is not required.
  • the values thus determined and stored for the actuating signal already represent empirical values in the sense of the present invention. A further processing of these values may possibly lead to more specific empirical values. For this purpose, mean values of a plurality of set signal values assigned to a unwound thread length can be formed.
  • mean values of several or all of the spinning heads 9 of a batch which have been coiled on a workstation 2 can be determined and stored accordingly in a table. It is also possible to use averages of all or several jobs 2 of a lot. For this purpose, if not already done, the values recorded at work stations 2 are advantageously transmitted to the central control unit 50.
  • the mean values of all spinning cops 9 of this batch or the mean values of the respectively last spinning cops 9 of several or all winding units of this batch can be determined. These average values are then stored correspondingly in tables, wherein each value of the unwound thread length is assigned such an average value of the actuating signal.
  • Block 47 represents a memory in which the empirical values, as described above, are stored in the form of tables. In a table, a unwound thread length is assigned a value for the control signal. Depending on which empirical values are used, the memory 47 may be assigned to the workstation control 40 or the central control unit 50.
  • the control signal u determined on the basis of the length of thread unwound from the spinning cop and the table is then fed to the thread tensioner 14.
  • the winding speed is set to the value stored in the table.
  • the distance 46 forms the actual value y of the thread tension. This actual value y is close to the desired value v, although the thread tension is not controlled but controlled.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20110009261 2010-12-23 2011-11-23 Verfahren zum Betreiben einer Spulmaschine und Spulmaschine Not-in-force EP2468670B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010056116A DE102010056116A1 (de) 2010-12-23 2010-12-23 Verfahren zum Betreiben einer Spulmaschine und Spulmaschine

Publications (3)

Publication Number Publication Date
EP2468670A2 EP2468670A2 (de) 2012-06-27
EP2468670A3 EP2468670A3 (de) 2013-08-21
EP2468670B1 true EP2468670B1 (de) 2014-08-06

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EP20110009261 Not-in-force EP2468670B1 (de) 2010-12-23 2011-11-23 Verfahren zum Betreiben einer Spulmaschine und Spulmaschine

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EP (1) EP2468670B1 (enExample)
JP (1) JP5916374B2 (enExample)
CN (1) CN102530646B (enExample)
DE (1) DE102010056116A1 (enExample)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102016121667A1 (de) 2016-11-11 2018-05-17 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Spulstelle und Spulmaschine

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DE102012007683A1 (de) * 2012-04-17 2013-10-17 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Spulmaschine und Spulmaschine
CN103451790B (zh) * 2013-08-22 2016-03-30 浙江康立自控科技有限公司 纺织机械产量统计装置
DE102013021316A1 (de) * 2013-12-16 2015-06-18 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Spulmaschine und Spulmaschine
DE102015008166A1 (de) * 2015-06-25 2016-12-29 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Optimieren der Dichte von auf Arbeitsstellen eines Kreuzspulautomaten hergestellten Kreuzspulen
US11305960B2 (en) * 2017-06-07 2022-04-19 Oerlikon Textile Gmbh & Co. Kg Method and device for monitoring a yarn tension of a running yarn
IT201900001195A1 (it) * 2019-01-28 2020-07-28 Savio Macch Tessili Spa Apparato di filatura, in particolare ad aria, con regolazione in continuo di un sistema di accumulo filo e relativo metodo di regolazione in continuo di un sistema di accumulo filo in un apparato di filatura
EP3828325A1 (de) * 2019-11-29 2021-06-02 Saurer Intelligent Technology AG Spinnstelle und luftspinnmaschine umfassend eine solche spinnstelle und verfahren zur erfassung einer einen soll-wert unterschreitenden fadenfestigkeit
DE102020131278A1 (de) * 2020-11-26 2022-06-02 Saurer Spinning Solutions Gmbh & Co. Kg Verfahren sowie Vorbereitungseinrichtung zum Vorbereiten von Spinnkopsen
CN113682891B (zh) * 2021-09-07 2023-05-19 巨石集团有限公司 一种单机头双分拉饼络机及其饼络方法
CN115584577A (zh) * 2022-10-10 2023-01-10 无锡舟控客电子设备有限公司 线类产品生产中品质监控及控制的方法、装置及存储介质

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Publication number Priority date Publication date Assignee Title
DE102016121667A1 (de) 2016-11-11 2018-05-17 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Spulstelle und Spulmaschine

Also Published As

Publication number Publication date
EP2468670A3 (de) 2013-08-21
JP2012131643A (ja) 2012-07-12
CN102530646A (zh) 2012-07-04
CN102530646B (zh) 2016-03-30
EP2468670A2 (de) 2012-06-27
JP5916374B2 (ja) 2016-05-11
DE102010056116A1 (de) 2012-06-28

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