EP3699343A1 - Procédé et système de surveillance de la production d'une machine à tricoter pourvue d'une pluralité de dispositifs d'alimentation en fil - Google Patents

Procédé et système de surveillance de la production d'une machine à tricoter pourvue d'une pluralité de dispositifs d'alimentation en fil Download PDF

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Publication number
EP3699343A1
EP3699343A1 EP20156279.0A EP20156279A EP3699343A1 EP 3699343 A1 EP3699343 A1 EP 3699343A1 EP 20156279 A EP20156279 A EP 20156279A EP 3699343 A1 EP3699343 A1 EP 3699343A1
Authority
EP
European Patent Office
Prior art keywords
signal
monitoring
thread
knitting machine
machine
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.)
Granted
Application number
EP20156279.0A
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German (de)
English (en)
Other versions
EP3699343B1 (fr
Inventor
Rolf Huss
Thomas Streubel
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.)
Memminger IRO GmbH
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Memminger IRO GmbH
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Publication date
Application filed by Memminger IRO GmbH filed Critical Memminger IRO GmbH
Publication of EP3699343A1 publication Critical patent/EP3699343A1/fr
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Publication of EP3699343B1 publication Critical patent/EP3699343B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/94—Driving-gear not otherwise provided for
    • D04B15/99—Driving-gear not otherwise provided for electrically controlled

Definitions

  • the invention relates to a method and a system with thread feed devices for monitoring the production of a knitting machine.
  • the thread delivery of the thread feeding devices is monitored with a monitoring device, e.g. B. with a running monitor or an optical sensor, and the knitting machine is stopped if there is no thread delivery.
  • a monitoring device may also indicate an error when the knitting machine is at a standstill or when individual threads are moved manually by the operating personnel.
  • an electronic device for monitoring several running threads on a textile machine has a drive device common to all thread running points (work stations).
  • a running monitor is assigned to each thread to generate signals indicating a thread breakage.
  • the outputs of the running monitors are connected to a disconnection device via a common line.
  • the electronic device has a circuit for generating a control signal within the interval in which the drive device is switched on.
  • a display device with a memory element and a display element connected to it for continuous display of a thread break and a switching element which causes a signal from the movement monitor indicating a thread break to only set the memory element for the duration of the control signal are provided for each movement monitor.
  • the monitoring device only triggers a shutdown when the control signal indicates that the machine is running.
  • the control signal is generated from the motor control circuit of the common drive device.
  • a method for determining the stopping of the thread delivery from a weft thread feeding device or from a positive thread feeding device to a textile machine is from US Pat EP 3 269 857 A1 known.
  • the thread feeding device is provided with a monitoring device, namely with a sensor, which is designed to generate delivery pulses which indicate the unwinding of the thread.
  • position pulses are used by the machine, which indicate the operating position of the textile machine.
  • a stop signal is generated when the number of position pulses since the last delivery pulse exceeds a threshold value.
  • the object of the invention is to develop a method and a system with thread feed devices for monitoring the production of a knitting machine, in which a signal that indicates whether the knitting machine is running is generated independently of the knitting machine.
  • the thread delivery of each thread feeding device is monitored by a monitoring device and, if necessary, a stop signal for the knitting machine is sent via the monitoring connection. It is used by a machine running signal to detect whether the knitting machine is in operation.
  • a sensor unit of the monitoring device For each yarn feeding device, a sensor unit of the monitoring device generates a sensor signal which is checked for a stop condition by a control unit of the monitoring device. If necessary, a stop signal is generated when the operation of the knitting machine is recognized with the aid of the machine running signal, i. H. when the machine running signal indicates the operation of the knitting machine.
  • the machine running signal is generated by the control units of at least two yarn feeding devices with the aid of the sensor signals. I.e. Sensor signals are used, if necessary, to generate the machine running signal.
  • a monitoring signal is sent via the monitoring connection between the knitting machine and the parallel-connected control units of the yarn feeders, which contains both the machine running signal and, if necessary, the stop signal.
  • the monitoring connection is designed, for example, as a communication connection.
  • the monitoring signal is an alternating voltage signal, the machine running signal being applied as half-waves and, if necessary, a stop signal as the other half-waves.
  • the machine running signal is generated with the positive half-waves and the stop signal with the negative half-waves of the AC voltage signal.
  • the thread feeding devices are divided into a master thread feeding device and at least two groups of thread feeding devices.
  • a first half-wave of the machine running signal is switched on by the master yarn feeder.
  • a subsequent half-wave of the machine running signal is switched on by thread feed devices of each group when the thread is delivered.
  • the operation of the knitting machine is recognized by the control units of the monitoring devices of the thread feeders on the basis of the machine running signal if a half-wave has been switched on by the master thread feeder and by all groups within the control interval; ie when all groups have reported.
  • the master yarn feeder is also assigned to the first group. At the start of the control interval, the master yarn feeder switches on a first half-wave and then a second half-wave of the machine running signal for the first group.
  • control interval is 80 ms to 300 ms or more.
  • the control interval is in particular 80 ms to 120 ms.
  • the sensor signal is in each case formed by an optical sensor device of the sensor unit, which is arranged on the yarn feeder.
  • a system for monitoring the production of a knitting machine is provided with several thread feeders and a monitoring connection with which the thread feeders and the knitting machine are connected.
  • Each thread feeding device has a monitoring device for monitoring the thread delivery and, if necessary, for sending a stop signal for the knitting machine via the monitoring connection.
  • the system is designed to use a machine running signal to detect whether the knitting machine is in operation.
  • the monitoring device of each thread feeding device comprises a sensor unit for generating a sensor signal and a control unit for checking the sensor signal for a stop condition and possibly for generating a stop signal when the machine running signal indicates the operation of the knitting machine.
  • the control units of at least two yarn feeding devices are designed to generate the machine running signal with the aid of the sensor signals.
  • the monitoring connection (communication connection) is designed between the knitting machine and the to send a monitoring signal connected in parallel to the control units of the yarn feeding devices, which contains both the machine running signal and, if necessary, a stop signal.
  • the monitoring connection is designed to send an AC voltage signal as a monitoring signal, one half-wave of which is formed by the machine running signal and the other half-wave of which is possibly formed by a stop signal.
  • one of the thread feeding devices is designed as a master thread feeding device, the remaining thread feeding devices being divided into at least two groups of thread feeding devices.
  • the master thread feeder is designed to switch on a first half-wave of the machine running signal within a control interval, and the thread feeders of each group are designed to switch on a subsequent half-wave of the machine running signal when the thread is delivered.
  • the control units of the sensor units are designed to recognize the operation of the knitting machine on the basis of the machine running signal when a half-wave has been switched on by the master thread feeder and by all groups within the control interval.
  • the master yarn feeder is designed to switch on a first half-wave of the machine running signal and then a second half-wave for the first group at the start of the control interval.
  • each sensor unit has an optical sensor device which is arranged on the yarn feeding device and which is designed to generate the sensor signal.
  • an optical sensor device is arranged on the outgoing thread of the thread feeding device.
  • a system according to the invention with several thread delivery devices is designed for the delivery of threads to a knitting machine.
  • the knitting machine is a circular knitting machine or a flat knitting machine or a knitting machine or a similar machine.
  • a system for monitoring the production of a knitting machine has a plurality of yarn feeders 1, one of which is shown schematically in FIG Figure 1 is shown.
  • the yarn feeder 1 shown is a storage yarn feeder. It comprises a housing 2, a storage device 3 on which a thread F can be wound and from which the thread F can be pulled off, a braking device with a braking body 5 and with an adjusting unit 6.
  • Each thread feeding device 1 comprises a monitoring device U for monitoring the thread delivery and, if necessary, for sending a stop signal for the knitting machine.
  • the monitoring device U comprises a sensor unit 7 for generating a sensor signal and a control unit 8 for checking the sensor signal for a stop condition and, if necessary, for generating a stop signal.
  • the sensor unit 7 has an optical sensor device which is arranged on the yarn feeding device 1.
  • the sensor device is designed as a withdrawal sensor which is arranged in the region of one withdrawal end of the storage device 3.
  • the sensor unit 7 has a transmitter 9 and a receiver 10. It generates a sensor signal with draw-off pulses I, a draw-off pulse I being generated when a yarn turn is drawn off from the storage device 3.
  • the system is designed to generate a machine running signal by which it is recognized whether the knitting machine is in operation.
  • the control unit 8 of the thread feeding devices 1 is each designed to check the sensor signal, specifically when the operation of the knitting machine is recognized with the aid of the machine running signal. I.e. the control unit 8 checks whether the sensor signal indicates at least one withdrawal pulse I when the knitting machine is running.
  • the system shown has several yarn feeding devices 1 and a monitoring connection.
  • the knitting machine and the thread feeding devices 1 are connected to the monitoring connection.
  • the control units 8 of the yarn feeders 1 are connected in parallel.
  • the monitoring connection is designed to send a monitoring signal between the knitting machine and the control units 8 of the thread feeding devices 1. It is designed in particular to send an AC voltage signal as a monitoring signal.
  • the monitoring connection is designed as a communication connection with four lines L1 to L4.
  • a three-phase current of 42 volts with a frequency of 50 Hz is applied to the three lines L1 to L3.
  • d. H. Line L4 is used to transmit the monitoring signal in the form of an AC voltage signal.
  • the control units 8 are designed to generate the machine running signal with the aid of the sensor signals.
  • the control units 8 are designed to check the sensor signals for withdrawal pulses I independently of information from the knitting machine and to generate a machine running signal if withdrawal pulses I are present.
  • the monitoring connection is designed to send the monitoring signal between the knitting machine and the control units 8 of the yarn feeding devices 1 connected in parallel.
  • the monitoring signal contains both the machine running signal and the stop signal.
  • the system in this example comprises a yarn feeder 1 designed as a master yarn feeder M, at least one yarn feeder 1 from a first group G1, at least one yarn feeder 1 from a second group G2 and at least one yarn feeder 1 from a third group G3.
  • Each control unit 8 of the yarn feeder 1 comprises a control unit (not shown separately in the drawing), a diode D1 and a switch S1 for the negative half-wave of the alternating voltage signal and a diode D2 and a switch S2 for the positive half-wave of the alternating voltage signal.
  • the monitoring connection is designed to send an alternating voltage signal, the positive half-waves of which generate a machine running signal and the negative half-waves of which may generate a stop signal for the knitting machine.
  • Figure 2 also shows a relay unit R of the knitting machine with a relay S3 and a diode D3.
  • the diode D3 is acted upon, which leads to the actuation of the relay S3 and thus to the switching off of the knitting machine.
  • Figure 3 shows a monitoring signal with the half-waves of the master yarn feeder M and each of a yarn feeder 1 of the groups G1, G2 and G3.
  • the master thread feeder M is designed to switch on a first half-wave within a control interval when withdrawal pulses I are present by the control unit of its control unit 8 via switch S1, i.e. H. to deliver a start pulse of the machine run signal. This is used for synchronization.
  • the thread feeding devices 1 of each group G1, G2 and G3 are designed to be activated by the control units of their control units 8 via the switches S1, in each case during thread delivery, i.e. H. when trigger pulses I are present, one of the following half-waves of the machine running signal is activated.
  • the control units 8 are designed to recognize a machine running signal when all groups G1, G2 and G3 have reported yarn delivery within the control interval started by the master yarn feeder M.
  • the master yarn feeder M is also the yarn feeder 1 of the first group G1.
  • Figure 4 shows a flow diagram of a control unit 8 of a yarn feeder 1.
  • control unit 8 specifically the control unit of the control unit 8, checks each yarn feeder 1 to determine whether the machine running signal is present. To this end, the control unit 8 checks whether all positive half-waves M, G1, G2, and G3 are connected to the monitoring signal.
  • control unit of the control unit 8 checks whether trigger pulses I are present.
  • control unit 8 If not, d. H. if there are no withdrawal pulses I when the knitting machine is running, the control unit 8, namely the control unit, generates a stop signal. For this purpose, switch S1 is actuated by the control unit. The stop signal is sent to the relay unit R of the knitting machine via the other (lower) half-wave and the knitting machine is stopped.
  • control unit 8 checks whether withdrawal pulses I are present.
  • Figure 5 shows an alternative to the monitoring device in which the sensor unit 70 of the monitoring device U, which is also designed as an optical sensor device, is arranged on the thread F at the outlet of the thread feeding device 1.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP20156279.0A 2019-02-25 2020-02-10 Procédé et système de surveillance de la production d'une machine à tricoter pourvue d'une pluralité de dispositifs d'alimentation en fil Active EP3699343B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019104681.5A DE102019104681B3 (de) 2019-02-25 2019-02-25 Verfahren und System mit Fadenliefergeräten zur Überwachung der Produktion einer Strickmaschine

Publications (2)

Publication Number Publication Date
EP3699343A1 true EP3699343A1 (fr) 2020-08-26
EP3699343B1 EP3699343B1 (fr) 2022-01-05

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EP20156279.0A Active EP3699343B1 (fr) 2019-02-25 2020-02-10 Procédé et système de surveillance de la production d'une machine à tricoter pourvue d'une pluralité de dispositifs d'alimentation en fil

Country Status (4)

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EP (1) EP3699343B1 (fr)
CN (1) CN111607891B (fr)
DE (1) DE102019104681B3 (fr)
TW (1) TWI760670B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4443252A1 (fr) * 2023-04-06 2024-10-09 L.G.L. Electronics S.p.A. Procédé de configuration pour la configuration simultanée d'une pluralité de fournisseurs de fil à commande électronique dans un processus textile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923511A1 (de) 1978-06-19 1979-12-20 Loepfe Ag Geb Elektronische einrichtung zur ueberwachung einer mehrzahl laufender faeden an einer textilmaschine
DE4105450A1 (de) * 1991-02-21 1992-08-27 Frei Gmbh & Co Geb Schaltungsanordnung zum anschluss einer vielzahl von sensoren an eine zentrale steuereinheit
EP2857567A1 (fr) * 2013-10-02 2015-04-08 Memminger-IRO GmbH Procédé et dispositif de surveillance de la production d'une machine à tricoter
EP3075690A1 (fr) * 2015-03-30 2016-10-05 Memminger-IRO GmbH Procede et dispositif de surveillance de la production d'une machine a tricoter et machine a tricoter
EP3269857A1 (fr) 2016-07-15 2018-01-17 L.G.L. Electronics S.p.A. Procédé de commande du déroulement de fil à partir d'une alimentation en trame

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1275465B (it) * 1995-07-03 1997-08-07 Tiziano Barea Dispositivo di controllo dell'alimentazione di una pluralita' di fili o filati ad una macchina tessile avente mezzi sensori codificati e metodo per il suo controllo
DE10112795A1 (de) * 2001-03-16 2002-09-26 Iro Ab Verfahren zur Produktionsüberwachungs/Einstellung einer Strickmaschine, und Produktionsüberwachungs/Einstellungs-Vorrichtung
DE10228794A1 (de) * 2002-06-27 2004-01-15 Iropa Ag Fadenverarbeitendes System und Verfahren zum Steuern und/oder Überwachen des Systems
CN2671223Y (zh) * 2003-12-23 2005-01-12 中国科学院安徽光学精密机械研究所 无主变压器式激光脉冲电源
WO2009059438A1 (fr) * 2007-11-06 2009-05-14 Rotorcraft Ag Métier à tricoter et procédé de fabrication de tricots à partir de mèches de préparation
CN104131410B (zh) * 2014-08-14 2016-06-01 江南大学 经编机无线控制器和无线控制方法
WO2016091286A1 (fr) * 2014-12-09 2016-06-16 Memminger-Iro Gmbh Procédé et dispositif de surveillance de machine à tricoter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923511A1 (de) 1978-06-19 1979-12-20 Loepfe Ag Geb Elektronische einrichtung zur ueberwachung einer mehrzahl laufender faeden an einer textilmaschine
DE4105450A1 (de) * 1991-02-21 1992-08-27 Frei Gmbh & Co Geb Schaltungsanordnung zum anschluss einer vielzahl von sensoren an eine zentrale steuereinheit
EP2857567A1 (fr) * 2013-10-02 2015-04-08 Memminger-IRO GmbH Procédé et dispositif de surveillance de la production d'une machine à tricoter
EP3075690A1 (fr) * 2015-03-30 2016-10-05 Memminger-IRO GmbH Procede et dispositif de surveillance de la production d'une machine a tricoter et machine a tricoter
EP3269857A1 (fr) 2016-07-15 2018-01-17 L.G.L. Electronics S.p.A. Procédé de commande du déroulement de fil à partir d'une alimentation en trame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4443252A1 (fr) * 2023-04-06 2024-10-09 L.G.L. Electronics S.p.A. Procédé de configuration pour la configuration simultanée d'une pluralité de fournisseurs de fil à commande électronique dans un processus textile

Also Published As

Publication number Publication date
TWI760670B (zh) 2022-04-11
TW202031955A (zh) 2020-09-01
EP3699343B1 (fr) 2022-01-05
CN111607891A (zh) 2020-09-01
DE102019104681B3 (de) 2020-04-23
CN111607891B (zh) 2022-02-22

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