EP3098340B1 - Verfahren zur meldung kritischer ereignisse an mit einer vielzahl von fäden gespeisten textilmaschinen - Google Patents

Verfahren zur meldung kritischer ereignisse an mit einer vielzahl von fäden gespeisten textilmaschinen Download PDF

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Publication number
EP3098340B1
EP3098340B1 EP16168483.2A EP16168483A EP3098340B1 EP 3098340 B1 EP3098340 B1 EP 3098340B1 EP 16168483 A EP16168483 A EP 16168483A EP 3098340 B1 EP3098340 B1 EP 3098340B1
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EP
European Patent Office
Prior art keywords
monitoring device
mobile terminal
operating information
critical event
stop signal
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EP16168483.2A
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English (en)
French (fr)
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EP3098340A1 (de
Inventor
Pietro Zenoni
Luca Gotti
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LGL Electronics SpA
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LGL Electronics SpA
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    • 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
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/007—Loom optimisation

Definitions

  • the present invention relates to a method for reporting critical events on textile machines which are fed by a plurality of yarns.
  • a generic textile machine such as a circular knitting machine, can be fed by a plurality of yarns that are unreeled from respective spools and which define what are known as "drops".
  • Every drop can have a sensing device which is adapted to detect critical events such as the breakage of the yarn, the presence of a knot, and the like.
  • a sensing device which is adapted to detect critical events such as the breakage of the yarn, the presence of a knot, and the like.
  • Such device can be a self-contained sensor, or it can be a sensor incorporated in a weft feeder, e.g., a storage weft feeder or a rotating-distaff weft feeder, the principal purpose of which is to stabilize the tension with which the yarn is fed to the machine at a desired level.
  • the sensors and the feeds are all connected to a monitoring device which, upon the occurrence of a critical event on one of the drops, stops the machine.
  • the monitoring device can also be provided with wireless connectivity for remotely controlling the operating parameters of the machine and of the feeds associated therewith.
  • US 2006/079216 A1 discloses a system comprising control computers for controlling and detecting the operating data, e.g., the speed, stoppage, cause of stoppage, etc., for each textile machine, and a central computer for determining the production data.
  • the control computers and the central computer respectively comprise means for wireless signal transmission, and form, with a respectively associated transmission unit, a radio network for signal transmission according to the WLAN or Bluetooth standard.
  • the transmission units are connected by a telephone line.
  • US 4835699 A and EP 0 452 800 A1 both disclose monitoring systems capable of sending alarm signals via wired connection to a fixed terminal, which generates a warning for a user.
  • a drawback of the textile systems known today is that, in the event of a critical event on one of the feeders, some time can elapse before a textile factory operator notices the problem and intervenes to resolve it. This is because, often, the supervision of a large number of machines is assigned to a single operator who, usually, also has other duties in the factory and therefore cannot supervise all the machines full time, also considering the sporadic nature with which such critical events occur.
  • the seizing of the motor of a rotating-distaff weft feeder is typically due to the jamming of the yarn on the spool upstream of the feeder. Therefore, in order to resolve the problem, the operator has to go to the area of the spools in order to manually free the yarn. On the contrary, in the event of breakage of the yarn output by the feeder, the operator has to manually re-thread the yarn in the area between the feeder and the machine.
  • the aim of the present invention is therefore to devise a method for reporting critical events on textile machines fed by a plurality of yarns, which, upon the occurrence of a critical event on a drop, enables the operator to be aware, practically in real time, of the exact location of the device(s) affected by the problem as well as the nature of such problem, so as to minimize the intervention times and, therefore, the machine shutdown times.
  • a further object of the invention is to devise a method that can be implemented using data transmission infrastructures that are already in use, so as to limit the costs.
  • a textile apparatus comprises a textile machine M, e.g., a circular knitting machine, which receives a plurality of yarns from respective spools such as R1-R9. Each feed line defines a yarn "drop".
  • a textile machine M e.g., a circular knitting machine
  • Each feed line defines a yarn "drop".
  • a sensing device which is adapted to detect critical events such as the breakage of the yarn, the presence of a knot, and the like.
  • such sensing device is incorporated in a storage weft feeder such as AF1, AF2, AF3, in other cases it is incorporated in a rotating-distaff weft feeder such as PF1, PF2, PF3, in still other cases it comprises a dedicated self-contained sensor such as S1, S2, S3.
  • the machine M is controlled by a monitoring device MD through a first bus MB, and is connected in order to transmit/receive data to/from the sensing devices through a second bus DB which interconnects all the devices.
  • the affected sensing device Upon the occurrence of a critical event on one of the drops, the affected sensing device transmits a stop signal to the monitoring device MD using the second bus DB. Upon reception of the stop signal, the monitoring device MD sends a command to stop the machine M using the first bus MB.
  • the monitoring device MD is further provided with wireless connectivity, e.g., wireless LAN technology according to the conventional IEEE 802.11 standard, in order to communicate using an antenna A with a plurality of mobile terminals such as MT1, MT2, MT3, through an access point AP that generates a wireless LAN infrastructure to which all the mobile terminals connect.
  • wireless connectivity e.g., wireless LAN technology according to the conventional IEEE 802.11 standard
  • the mobile terminal can be a smartphone, a tablet computer, or any other conventional or dedicated device, as long as it is provided with a wireless transceiver, in this embodiment, wireless LAN technology.
  • the system shown in the example in Fig. 2 includes seven machines M1-M7, each one of which is associated with a respective monitoring device MD1-MD7.
  • the block 100 indicates the start of the method according to an embodiment of the invention
  • the monitoring devices MD1-MD7 queries each one of the sensing devices to which it is connected through the second bus MD on the alarm status (active/inactive) and, if the alarm is active, on the cause of the problem, i.e., the nature of the critical event (block 120).
  • the querying by the monitoring device begins only when the latter has received confirmation that the machine is stopped.
  • the querying could begin directly upon reception of the stop signal originating from the sensing devices.
  • each one of the mobile terminals MT1-MD3 carries, stored, all the IP addresses of the monitoring devices associated with the machines assigned to its user (e.g., the user of the mobile terminal MT1 has the machines M1, M2, M3 assigned; the user of the mobile terminal MT2 has the machines M4, M5 assigned; the user of the mobile terminal MT3 has the machines M6, M7 assigned), and is programmed to cyclically query them on the active/inactive stop status of the machine.
  • the monitoring device In response to the querying by the mobile terminal (block 130), the monitoring device sends an alarm signal that, advantageously, includes operating information that comprises an identification code of the machine with which it is associated and information on the active/inactive stop status; if the stop is active, the monitoring device preferably also transmits the list of the device(s) with the alarm status active and the cause of the problem(s) (block 140).
  • the mobile terminal Upon reception of the aforementioned operating information, the mobile terminal generates an alert, e.g., an acoustic alert or a vibration, so as to alert the user, and displays the information e.g., on an integrated screen for devices such as smartphones, tablet computers, and the like.
  • an alert e.g., an acoustic alert or a vibration
  • the method explained above makes it possible to considerably reduce the intervention times in the event of a critical event such as the breakage of the yarn or the jamming of a feeder, and therefore the machine shutdown times.
  • the method can be carried out using wireless infrastructures already in use, so as to reduce the implementation costs.
  • the sensing device together with the stop signal, immediately also supplies the operating information to the monitoring device. Therefore, the step of querying the sensing devices by the monitoring device is no longer necessary.
  • the mobile terminals instead of cyclically interrogating the monitoring device, wait passively for an alert from the latter, which is programmed to send the operating information on its own initiative upon the occurrence of a critical event.
  • the operating information sent to the mobile terminal could include only the position of the drop affected by the problem. In fact, if there are few machines to supervise, the alarm signal alone may be sufficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Selective Calling Equipment (AREA)
  • Telephonic Communication Services (AREA)
  • Alarm Systems (AREA)

Claims (12)

  1. Ein Verfahren zur Meldung kritischer Ereignisse an einer mit einer Vielzahl von Fäden gespeisten Textilmaschine (M), jeweils einer Erfassungsvorrichtung (AF1, AF2, AF3; PF1, PF2, PF3; S1, S2, S3) ausgesetzt, die ausgebildet ist, um bei Auftreten eines kritischen Ereignisses ein Stoppsignal zu erzeugen, wobei die Textilmaschine (M) von einer Überwachungsvorrichtung (monitoring device, MD) gesteuert ist, die angeschlossen ist, um Daten mit jeder der Erfassungsvorrichtungen auszutauschen und um die Textilmaschine (M) bei Empfang des Stoppsignals von mindestens einer davon anzuhalten, wobei die Überwachungsvorrichtung (MD) weiter mit drahtloser Konnektivität ausgestattet ist, um mit mindestens einem mobilen Endgerät (MT1, MT2, MT3) zu kommunizieren, dadurch gekennzeichnet, dass die Überwachungsvorrichtung (MD) nach Empfang des Stoppsignals ein Alarmsignal an das mobile Endgerät (MT1, MT2, MT3) sendet, wobei das mobile Endgerät (MT1, MT2, MT3) programmiert ist, um als Konsequenz eine Warnung für den Benutzer zu erzeugen.
  2. Das Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass das Alarmsignal Betriebsinformationen bezüglich der Erfassungsvorrichtungen enthält, die das kritische Ereignis erfasst haben, wobei das mobile Endgerät (MT1, MT2, MT3) programmiert ist, um die Betriebsinformationen anzuzeigen.
  3. Das Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass die Überwachungsvorrichtung (MD) bei Empfang des Stoppsignals die Betriebsinformationen von jeder der Erfassungsvorrichtungen (AF1, AF2, AF3; PF1, PF2, PF3; S1, S2, S3) abfragt.
  4. Das Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass die Erfassungsvorrichtung gemeinsam mit dem Stoppsignal der Überwachungsvorrichtung auch die Betriebsinformationen liefert.
  5. Das Verfahren gemäß einem oder mehreren der Ansprüche 1-4, dadurch gekennzeichnet, dass die Überwachungsvorrichtung (MD) das Alarmsignal nach Anforderung desselben an das mobile Endgerät (MT1, MT2, MT3) sendet, wobei das mobile Endgerät (MT1, MT2, MT3) programmiert ist, um die Überwachungsvorrichtung (MD) zyklisch abzufragen.
  6. Das Verfahren gemäß einem oder mehreren der Ansprüche 1-4, dadurch gekennzeichnet, dass die Überwachungsvorrichtung (MD) programmiert ist, um das Alarmsignal bei Auftreten eines kritischen Ereignisses aus eigener Initiative zu senden.
  7. Das Verfahren gemäß einem oder mehreren der Ansprüche 1-6, dadurch gekennzeichnet, dass die Betriebsinformationen, die die Erfassungsvorrichtungen betreffen, welche ein kritisches Ereignis gemeldet haben, die Position des Fadens einschließen, der von dem kritischen Ereignis betroffen ist.
  8. Das Verfahren gemäß einem oder mehreren der Ansprüche 1-7, dadurch gekennzeichnet, dass die Betriebsinformationen, die die Erfassungsvorrichtungen betreffen, welche ein kritisches Ereignis gemeldet haben, die Art des kritischen Ereignisses einschließen.
  9. Das Verfahren gemäß einem oder mehreren der Ansprüche 1-8, dadurch gekennzeichnet, dass das mobile Endgerät (MT1, MT2, MT3) eine Vielzahl von Adressen von Überwachungsvorrichtungen (MD1-MD7) gespeichert hat, die mit entsprechenden Maschinen (M1-M7) verknüpft sind, welche zur Überwachung eines Benutzers des mobilen Endgeräts bestimmt sind, und dadurch, dass bei Auftreten eines kritischen Ereignisses in einer der Maschinen mit dem daraus folgenden Senden des Alarmsignals und der Betriebsinformationen durch die entsprechende Überwachungsvorrichtung Letztere einen Kenncode der Maschine sendet, mit welcher sie verknüpft ist.
  10. Das Verfahren gemäß Anspruch 9, dadurch gekennzeichnet, dass jede der Überwachungsvorrichtungen (MD1-MD7) mit dem mobilen Endgerät, dem die jeweilige Maschine zugewiesen ist, unter Verwendung von Wireless-LAN-Technologie über einen Zugriffspunkt (AP) kommuniziert.
  11. Das Verfahren gemäß einem oder mehreren der Ansprüche 3-10, dadurch gekennzeichnet, dass die Anforderung von Betriebsinformationen durch die Überwachungsvorrichtung beginnt, nachdem diese eine Bestätigung empfangen hat, dass die Textilmaschine angehalten ist.
  12. Das Verfahren gemäß einem oder mehreren der Ansprüche 3-10, dadurch gekennzeichnet, dass die Anforderung von Betriebsinformationen durch die Überwachungsvorrichtung direkt bei Empfang des Stoppsignals beginnt.
EP16168483.2A 2015-05-20 2016-05-05 Verfahren zur meldung kritischer ereignisse an mit einer vielzahl von fäden gespeisten textilmaschinen Active EP3098340B1 (de)

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* Cited by examiner, † Cited by third party
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CN115933506A (zh) * 2021-08-27 2023-04-07 江苏云编智能科技有限公司 一种可手机远程控制智能高速钩编机
CN118771098A (zh) * 2023-04-06 2024-10-15 爱吉尔电子股份公司 用于在纺织工艺中同时配置多个电子控制的纱线供给器的设置方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4835699A (en) * 1987-03-23 1989-05-30 Burlington Industries, Inc. Automated distributed control system for a weaving mill
US4744227A (en) * 1987-06-23 1988-05-17 Whitener Jr Charles G Pattern monitoring method and apparatus
IT1242051B (it) * 1990-04-20 1994-02-02 Tiziano Barea Perfezionamenti relativi al controllo del corretto assorbimento dei fili utilizzati in una macchina tessile,in particolare per maglieria o calzetteria
ATE346331T1 (de) * 2002-12-11 2006-12-15 Textilma Ag System zur erfassung von produktionsdaten einer anzahl von textilmaschinen
CN101515166B (zh) * 2009-03-19 2012-07-04 杭州嘉拓科技有限公司 一种监控纱线运动状态的装置及监控方法
CN202989448U (zh) * 2012-09-26 2013-06-12 长沙理工大学 一种基于视频信号处理的断纱检测装置
CN103911702A (zh) * 2014-01-28 2014-07-09 韵升控股集团有限公司 纱线断头监测装置

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