EP0908411B1 - Service interruption processing system for yarn winding machine - Google Patents

Service interruption processing system for yarn winding machine Download PDF

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Publication number
EP0908411B1
EP0908411B1 EP98116107A EP98116107A EP0908411B1 EP 0908411 B1 EP0908411 B1 EP 0908411B1 EP 98116107 A EP98116107 A EP 98116107A EP 98116107 A EP98116107 A EP 98116107A EP 0908411 B1 EP0908411 B1 EP 0908411B1
Authority
EP
European Patent Office
Prior art keywords
winding
yarn
service interruption
control apparatus
interruption processing
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
EP98116107A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0908411A2 (en
EP0908411A3 (en
Inventor
Toshio Yamauchi
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP0908411A2 publication Critical patent/EP0908411A2/en
Publication of EP0908411A3 publication Critical patent/EP0908411A3/en
Application granted granted Critical
Publication of EP0908411B1 publication Critical patent/EP0908411B1/en
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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • 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 present invention relates to a service interruption processing system for a yarn winding machine having a large number of winding units each driven by a single spindle.
  • An automatic winder is defined as a yarn winding machine having a large number of winding units each driven by a single spindle. These winding units are installed on its machine body in a row.
  • a single winding unit has the function of winding yarn, rewound from a supply bobbin which is produced by a ring spinning machine, into a package of a specified shape, while also eliminating yarn defects.
  • each winding unit includes winding control apparatuses, which are controllers using sequencers or microcomputers.
  • a main control apparatus common to a large number of winding control apparatuses corresponding to a large number of winding units is provided at one end of the machine body.
  • a controlling system power supply is disposed in the main control apparatus and a current supplied from the system power supply operates the large number of winding control apparatuses.
  • the stop conditions affecting the winding units may vary due to variations in the characteristics of service interruption detecting elements and to slight differences in the service interruption detecting level among the large number of winding control apparatuses.
  • a similar state may occur when a different load is to be controlled due to the operational conditions of each winding unit or to differences in the conditions of the bearings. If, for example, an instantaneous service interruption or voltage drop occurs that is not a complete service interruption, some winding units will detect a service interruption whereas others will not. In these conditions, the operator cannot determine whether this phenomenon has been caused by a service interruption or by a different factor, and is consequently at a loss as to what action to take.
  • DE-A-4 338 283 discloses a service interruption processing system stopping the bobbin winding units after detection of a line drop. According to the present invention, it is intended to provide a service interruption processing system wherein a service interruption is concurrently detected, in order to stop all bobbin winding units in the same state, thereby enabling the yarn winding machine to easily recover to a winding-enabled state after the service interruption has been eliminated.
  • the invention set forth in claim 1 is a service interruption processing system for a yarn winding machine, comprising a large number of winding control apparatuses each provided so as to correspond to each of a large number of winding units; a main control apparatus common to the large number of winding control apparatuses; a system power supply provided in the main control apparatus to supply a current to each of said large number of winding control apparatuses; a service interruption detecting means for detecting the interruption of the system power supply; and a signal line used by the service interruption detecting means to detect service interruptions in order to concurrently transmit a service interruption detecting signal to the large number of winding control apparatuses.
  • the invention set forth in claim 2 is a service interruption processing system for a yarn winding machine according to claim 1 wherein the winding control apparatus includes a voltage retaining means for retaining a power voltage that enables normal operation, at least until the means receives the service interruption detection signal.
  • the invention set forth in claim 3 is a service interruption processing system for a yarn winding machine according to claim 2 wherein the winding control apparatus performs a predetermined service interruption processing operation immediately after receiving the service interruption detecting signal and has a voltage retaining time required to perform the service interruption processing operation.
  • the invention set forth in claim 4 is a service interruption processing system for a yarn winding machine according to claim 3 wherein the winding control apparatus includes a yarn length counter that measures the amount of yarn wound, and wherein upon receiving the service interruption detecting signal, the winding control apparatus stores, as a service interruption processing operation, a yarn length counter value in storage which is not deleted even if the power supply is interrupted.
  • the invention set forth in claim 5 is a service interruption processing system for a yarn winding machine according to claim 3 or 4 wherein a rotation speed control apparatus for a driving motor used to wind yarn is provided as another control apparatus controlled by the winding control apparatus, and wherein upon receiving the service interruption detecting signal, the winding control apparatus instructs the rotation speed control apparatus to stop operating freely.
  • a yarn winding machine is an automatic winder.
  • the automatic winder winds a yarn of a supply bobbin produced by a spinning machine into a winding package of a specified shape, and a large number of winding units U are installed in a row on a machine body of the yarn winding machine.
  • a main controller MC and an automatic supply bobbin feeding apparatus CBF are disposed at the respective ends of the group of winding units.
  • Each winding unit U can be driven by a single spindle, and the main controller MC controls each winding unit U or each group of a plurality of winding units U.
  • the winding unit U has a supply bobbin 1, balloon breaker 2, a tenser 3, a clearing apparatuses 4 and 9 for clearing defects in yarn, a winding drum 5 and a winding package 6 as shown in Figure 2.
  • a yarn Y rewound from the supply bobbin 1 passes through the balloon breaker 2 and the tenser 3 and is then wound around the winding package 6 rotated by the winding drum 5 while simultaneously yarn defects are being cleared by the clearing apparatuses 4 and 9.
  • Several to several tens of supply bobbins 1 are used to obtain a single winding package 6.
  • the clearing apparatuses 4 and 9 has a slab catcher 4 that detects yarn defects, a yarn cutter 9 that cuts the yarn and a clearing control section 4a controlled by the winding control apparatus 8.
  • the clearing control section 4a is connected to the winding control apparatus 8 via signal lines 7 and 11.
  • the clearing control section 4a compares the electric signal with a stored reference value, and if the signal exceeds an allowable range, determines that a yarn defect has passed through the slab catcher.
  • the yarn cutter 9 is connected to the clearing control section 4a via the signal line 10, so upon determining that the yarn defect has passed, the clearing control section 4a immediately transmits a "yarn cut" instruction signal to the yarn cutter 9.
  • the signal line 11 transmits a service interruption detecting signal from the winding control apparatus 8 to the clearing control section 4a, thereby operating the yarn cutter 9 to cut the yarn.
  • the winding control apparatus 8 outputs a "stop" instruction signal to an inverter 18 of a driving motor for a winding drum 12, in order to stop the rotation of the winding drum 5.
  • the clearing apparatuses 4 and 9 clear yarn defects and a yarn piecing apparatus 13 subsequently pieces the yarn.
  • the yarn piecing apparatus 13 is connected to the winding control apparatus 8, and starts yarn piecing when a "yarn piecing start" signal is input from the winding control apparatus 8. It also executes yarn piecing when the yarn is cut in the tenser 3 etc.
  • the winding unit U has two spare supply bobbins 1 at standby positions B1 and B2, located outside the supply bobbin 1 at a winding position A.
  • the yarn travelling signal on the signal line 7 is turned off as if the yarn was cut, thereby allowing yarn piecing to be carried out.
  • a mechanical or optical yarn filler 23 is connected to the winding control apparatus 8 via a signal line 24 to detect a lower yarn. If the yarn filler 23 cannot detect the lower yarn, the lower yarn travelling signal 24 is turned off to cause the winding control apparatus 8 to output a "supply bobbin change" signal to a supply bobbin changer (not shown in the drawing).
  • the supply bobbin changer When the "supply bobbin change" signal is input, the supply bobbin changer ejects an empty bobbin 1' from the winding position A and loads the supply bobbin 1 from the standby position B1. For piecing a lower yarn suction pipe 16 that sucks the end of the yarn Y1.
  • the end of an upper yarn on the winding package 6 comes out of a upper yarn suction pipe 15 that sucks the end of the yarn, while the end of the lower yarn on the yarn filler 23 comes out of the lower yarn suction pipe 16.
  • the upper yarn suction pipe 15 swivels around a shaft 15a to the rolling contact portion between the winding drum 5 and the winding package 6.
  • the winding drum 5 uses the inverter 18 to reversely rotate the driving motor 12 at a low speed in order to make the upper yarn come out. That is, the yarn winding machine reversely rotates the winding drum 5 to make the upper yarn come out, and uses the upper yarn suction pipe 15 to suck the upper yarn that comes out.
  • the lower yarn suction pipe 16 swivels around a shaft 16a to above the yarn filler 23 to suck the lower yarn that comes out.
  • the upper yarn suction pipe 15 and the lower yarn suction pipe 16 sequentially swivel to the position shown by the continuous line in order to place the upper and lower yarns in the slab catcher 4 and yarn piecing apparatus 13, respectively.
  • the yarn winding machine uses the driving motor 12 to further reversely rotate the winding drum 5 in order to return the pieced part to the slab catcher 4, thereby enabling the pieced part to be checked for a yarn defect.
  • the driving motor 12 transmits driving force to the winding drum 5, and the inverter 18 connected to the driving motor 12 is connected to the winding control apparatus 8 via signal lines 20 and 20a.
  • the inverter 18 controls the rotational speed of the driving motor 12 and sets it in response to a control signal output from the winding control apparatus 8 via the signal line 20. That is, the inverter 18 controls the driving motor 12 to a rotational speed most suitable to the winding conditions for the winding unit.
  • a "free run stop" instruction signal which is described below, is input to the inverter 18 from the winding control apparatus 8 through the signal line 20a.
  • the signal line 20a includes an inverter control instruction signal and the "free run stop" instruction signal, so it is actually composed of a plurality of lines.
  • the winding unit U has a yarn length measuring mechanism (not shown in the drawing) for measuring the length of wound yarn from the rotation speed of the winding drum 5, and the yarn length measuring mechanism has a pulse generating apparatus 14.
  • the pulse generating apparatus 14 comprises of a magnet that are fixed to part of the end surface of the winding drum 5 to detect the rotation of the winding drum 5 and a proximity sensor.
  • Each winding unit U is connected to the main controller MC via the signal lines 22 and 22a, and the main controller MC controls each winding unit U or each group of a plurality of winding units U as described above.
  • the main controller MC provides control via the signal lines 22 and 22a, of the settings for basic yarn speed based on the type of yarn being processed yarn and on variations in the winding speed for the ribbon breaker.
  • Figure 3 is a block diagram of a yarn winding machine having a service interruption processing system.
  • the service interruption processing system for a yarn winding machine is composed of the main controller MC and a system power supply 25 constituting a main control apparatus 27, a service interruption detector 26 composing a service interruption detecting means, an exclusive signal line 28 that transmits the service interruption detecting signal from the service interruption detector 26 to each winding unit, and the winding control apparatus 8 connected in parallel to the exclusive signal line 28 and corresponding to the large number of winding units.
  • the inverter 18 is connected to the winding control apparatus 8 via the signal line 20a, and the clearing control section 4a is connected to the winding control apparatus 8 via the signal line 11.
  • the inverter 18 and the clearing control section 4a are other control apparatuses connected to the winding control apparatus 8.
  • the service interruption detector 26 composing the service interruption detecting means is configured to detect the interruption of the system power supply 25 before the winding control apparatus 8 and the other control apparatuses connected to the winding control apparatus 8, that is, the inverter 18 and the clearing control section 4a individually detect interruptions and concurrently transmit the service interruption detecting signal to the large number of winding control apparatuses 8 via the exclusive signal line 28. Specifically, when the voltage of the controlling system power supply 25 remains a predetermined percentage below a predetermined value for a predetermined period of time, the service interruption detector 26 determines that a service interruption will occur and transmits the service interruption detecting signal.
  • the exclusive signal line 28 is exclusively provided so that the large number of winding control apparatuses 8 and the other control apparatuses connected to the winding control apparatus 8, that is, the inverter 18 and the clearing control section 4a can recognize the service interruption within 1 ms.
  • the service interruption detector 26 also transmits the service interruption detecting signal to the main controller MC.
  • the main controller MC controls strong-current equipment such as the cam shaft driving motor and blow driving motor that cause the upper yarn suction pipe 15 and the lower yarn suction pipe 16 to perform a yarn piecing operation.
  • the winding control apparatus 8 has a capacitor (a voltage retaining means) 29, the inverter 18 also has a capacitor 30 (a voltage retaining means), and the clearing control section 4a also has a capacitor 31.
  • These capacitors 29, 30 and 31 provide a predetermined power supply retaining time after the winding control apparatus 8 and the other control apparatuses connected to the winding control apparatus 8, that is, the inverter 18 and the clearing control section 4a receive the service interruption detecting signal.
  • the winding control apparatus 8, the inverter 18, and the clearing control section 4a retain at least their own power supply for normal operations after the voltage of the system power supply 25 has decreased and until the service interruption detector 26 determines that a service interruption will occur.
  • This predetermined power supply retaining time is, for example, at least one cycle or more, and is 20 ms or more when the cycle is 50 Hz.
  • the winding control apparatus 8 stores a yarn length counter value as described above, outputs a "free run stop” instruction to the inverter 18 via the signal line 20a, and outputs a "yarn cut” instruction signal to the clearing control section 4a via the signal line 11.
  • the inverter 18 stops the free run of the drive motor 12 while the clearing control section 4a activates the cutter 9.
  • each winding control apparatus 8 Upon detecting a service interruption (S1, YES), the service interruption detector 26 transmits the service interruption detecting signal to each winding control apparatus 8 (S2). Upon receiving the service interruption detecting signal (S3), each winding control apparatus 8 saves a yarn length counter value and stores it (where it will not be deleted even if a service interruption causes the yarn winding machine to be stopped, i.e., the power supply is shut down) (S4). In addition, in S3, each winding control apparatus 8 transmits the " yarn cut” instruction signal to the yarn cutter 9 (S5). Furthermore, in S3, each winding control apparatus 8 transmits the "free run stop” instruction signal to each inverter 18 (S6).
  • service interruption causes all winding units U to concurrently stop.
  • the winding control apparatus 8 stores the yarn length counter value from the yarn length measuring mechanism and transmits the "yarn cut” instruction signal to the yarn cutter 9. Furthermore, the winding control apparatus 8 transmits the "free run stop” instruction signal to the inverter 18.
  • the yarn length counter value is immediately saved and stored in the storage provided in the winding control apparatus 8. In this storage, the yarn length counter value is not deleted even if the power supply is turned off.
  • the yarn cutter 9 Upon receiving the "yarn cut” instruction signal, the yarn cutter 9 immediately cuts the yarn while the winding control apparatus 8 is operative. Furthermore, upon receiving the "free run stop” instruction signal, the inverter 18 stops the free run of the drive motor 12.
  • the yarn cutter 9 cuts the yarn, the free run of the driving motor 12 is stopped. This is because this operation can prevent miss-traversing even if insufficient power causes the yarn winding machine to stop while the yarn remains uncut. Since the yarn winding machine has the large number of winding units U, all of them cannot reliably cut the yarn. If a service interruption causes the yarn winding machine to stop while the yarn remains uncut, miss-traversing occurs because the inertia caused by the sudden stop of the winding drum 5 causes the yarn to be loosened from the end surface of the winding package 6.
  • the present invention is applicable as long as the yarn winding machine comprises a twisting section and a winding section, as in a twister, and has a large number of winding control apparatuses each used to drive each spindle.
  • each winding unit concurrently recognizes a service interruption and then stops, preventing any difference in the recognition of a service interruption.
  • the operator can determine the conditions of each winding unit easily, also, the yarn winding machine can recover to its winding-enabled state easily.
  • the winding control apparatus and the other control apparatuses perform a predetermined operation such as cutting the yarn, thereby preventing any difference in the recognition of a service interruption by the control apparatuses in each winding control apparatus.
  • the speed of the driving motor used to wind the yarn can be gradually reduced until it is stopped, thereby preventing the winding package from being loosened.
  • the operator can determine the conditions of each winding unit easily and the yarn winding machine can easily recover its winding-enabled state.

Landscapes

  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP98116107A 1997-09-16 1998-08-26 Service interruption processing system for yarn winding machine Expired - Lifetime EP0908411B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP250255/97 1997-09-16
JP9250255A JP3006562B2 (ja) 1997-09-16 1997-09-16 糸巻取機の停電処理システム
JP25025597 1997-09-16

Publications (3)

Publication Number Publication Date
EP0908411A2 EP0908411A2 (en) 1999-04-14
EP0908411A3 EP0908411A3 (en) 1999-07-21
EP0908411B1 true EP0908411B1 (en) 2002-07-24

Family

ID=17205168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116107A Expired - Lifetime EP0908411B1 (en) 1997-09-16 1998-08-26 Service interruption processing system for yarn winding machine

Country Status (6)

Country Link
EP (1) EP0908411B1 (ja)
JP (1) JP3006562B2 (ja)
KR (1) KR19990029813A (ja)
CN (1) CN1184124C (ja)
DE (1) DE69806712T2 (ja)
TW (1) TW384322B (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3951941B2 (ja) * 2003-03-17 2007-08-01 村田機械株式会社 自動ワインダ
WO2007088691A1 (ja) 2006-01-31 2007-08-09 Thk Co., Ltd. 中空モータ駆動装置
JP2013067892A (ja) * 2011-09-21 2013-04-18 Murata Mach Ltd 糸巻取機及び糸巻取ユニット
CN104064284B (zh) * 2014-07-28 2017-02-15 东莞市瀛通电线有限公司 一种缠绕机断电防断线方法及系统
CN108100754A (zh) * 2018-01-05 2018-06-01 常州市沃科科技有限公司 一种倒盘机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633627C2 (de) * 1986-10-03 1996-05-30 Schlafhorst & Co W Verfahren und Einrichtung zum Betrieb einer textile Fäden erzeugenden und/oder die Fäden auf Wickelkerne aufwickelnden Maschine
DE3644433C2 (de) * 1986-12-24 1995-10-19 Schlafhorst & Co W Verfahren und Vorrichtung zum Steuern einer Spulstelle einer Kreuzspulen herstellenden Textilmaschine
DE4011598A1 (de) * 1990-04-10 1991-10-17 Rieter Ag Maschf Textilmaschine, inbesondere ringspinnmaschine
US5499772A (en) * 1992-10-16 1996-03-19 Murata Kikai Kabushiki Kaisha Winding operation control method and apparatus for automatic winder
DE4338283A1 (de) * 1993-11-10 1995-05-11 Schlafhorst & Co W Kreuzspulen herstellende Textilmaschine

Also Published As

Publication number Publication date
EP0908411A2 (en) 1999-04-14
TW384322B (en) 2000-03-11
DE69806712T2 (de) 2003-04-03
JP3006562B2 (ja) 2000-02-07
EP0908411A3 (en) 1999-07-21
JPH1179555A (ja) 1999-03-23
CN1184124C (zh) 2005-01-12
CN1211532A (zh) 1999-03-24
KR19990029813A (ko) 1999-04-26
DE69806712D1 (de) 2002-08-29

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