EP2703532B1 - Method and device for starting a weaving machine - Google Patents

Method and device for starting a weaving machine Download PDF

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Publication number
EP2703532B1
EP2703532B1 EP13181011.1A EP13181011A EP2703532B1 EP 2703532 B1 EP2703532 B1 EP 2703532B1 EP 13181011 A EP13181011 A EP 13181011A EP 2703532 B1 EP2703532 B1 EP 2703532B1
Authority
EP
European Patent Office
Prior art keywords
drive
electric motor
starting
beating
weaving
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
EP13181011.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2703532A1 (en
Inventor
Petr Jirásko
Ond ej Marek
Ale Bílkovský
Zden k Volanský
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.)
Vuts AS
Original Assignee
Vuts AS
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Publication date
Application filed by Vuts AS filed Critical Vuts AS
Publication of EP2703532A1 publication Critical patent/EP2703532A1/en
Application granted granted Critical
Publication of EP2703532B1 publication Critical patent/EP2703532B1/en
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D03D49/62—Reeds mounted on slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/005—Independent drive motors

Definitions

  • the invention relates to a method for the starting of a weaving machine, in which the beating-up mechanism of the weaving reed proceeds from standstill to operating speed, whereby before dead centre in the position of the weft insertion the kinetic energy of the moving members of the beating-up mechanism is converted to the potential energy of a flexibly deforming means and after dead centre in the position of the weft insertion the potential energy of the means which is flexibly deformed is converted to the kinetic energy of the moving members of the beating-up mechanism of the weaving reed.
  • the invention further relates to a device for the starting of a weaving machine, whose beating-up mechanism of the weaving reed comprises a batten arranged on means which are flexibly deformable in a direction of the working movement of the batten between its beat-up position and the position of the weft insertion, whereby the batten is coupled with electric drive by means of a connecting rod, a crank and a crank shaft.
  • US5729114A solves the issue of starting a weaving machine by electronic controlling of asynchronous electric motor by means of a control unit upon receiving a signal from the detector of the main crank shaft revolutions of a loom.
  • a frequency converter Arranged before the electric motor is a frequency converter, which controls the drive of the machine during the first moments of the start-up.
  • This device is able to ensure that the desired technology requirements are met, nevertheless the electric motor must be dimensioned with respect to the necessity of accelerating large inertial masses during the starting operation of the machine, especially heald shafts during the start of beating-up weft.
  • the driving system of the weaving machine according to WO97033024A1 discloses the starting operation of the machine by electric motor coupled with capacity resistance, which has the role of intermediate storage of potential electric energy, which is consumed during the acceleration of inertial masses moving reciprocatingly.
  • the device according to EP1048769B1 describes a solution in which a disconnectable fly-wheel is arranged between the drive electric motor, which is during the starting operation controlled by means of a frequency converter, and the inertial masses, the fly-wheel being connected with the main shaft of the machine only after reaching the required start-up speed.
  • the electric motor In order to start the fly-wheel by means of the working electric motor, the electric motor must be appropriately dimensioned.
  • the device according to EP2004895B1 discloses the start-up of a machine, whose driving mechanism comprises additional rotational inertial masses running in the operating mode of the machine.
  • the start-up of these masses and simoultaneous start-up of the working mechanisms is energy demanding, costly and unsuitable with respect to possible utilization of the fabric produced during the starting operation.
  • the device solves mutual controlled connection of the drive motor to the main shaft of the machine and the additional rotational masses. That enables to start the machine without additional inertial rotational masses being connected and connect them only after the operating speed is achieved.
  • Devices according to the prior art either do not solve increased dimension of the drive motor at all, or basically solve the situation by regulation means coupled with the electric motor, yet more or less with regard to disposal of losses of fabric produced during the starting mode of the machine.
  • these are complicated solutions, wherein the need for stable operating mode of the overdimensioned drive means remains unsolved.
  • the goal of the invention is to remedy the drawbacks of the background art, particularly avoid utilization of an economically unfavourable overdimensioned electric motor.
  • the goal of the invention is achieved by a method of starting a weaving machine, whose principle consists in that the beating-up mechanism of the weaving reed from standstill in the first phase is driven at a lower speed and by a larger force, by which a flexibly deformable means is flexibly deformed before dead centre in the position of weft insertion, and subsequently, in the second phase, the beating-up mechanism of the weaving reed is driven at a higher speed, being close to the operating speed, and by a lesser force, whereby the flexibly deformable means returns to its original shape.
  • the principle of the device for starting a weaving machine consists in that the electric drive comprises a working drive electric motor and a starting drive electric motor, whereby the output shafts of both electric motors are coupled with a switchable drive clutch, whose outlet portion is interconnectable with the output shaft of the starting drive electric motor and/or with the output shaft of the working drive electric motor.
  • Fig. 1 represents a diagram of the movement of the batten connected with leaf springs and Fig. 2 a part of the drive mechanism controlling the movement of the batten.
  • Fig. 1 shows a side view of a part of a weaving machine in the area of the batten 1 which is in the position of weft insertion (continuous line), i.e. the weaving reed 3 is in a position remote from the beating up point and a shed is opening for inserting weft into the shed to be followed subsequently by beating up by the weaving reed 3 to the face of the formed fabric.
  • the stringer 11 of the batten 1 is arranged in a well-known manner between two vertically arranged leaf springs 12 at their upper end, the lower ends of the leaf springs 12 being firmly attached to the frame 2 of the weaving machine. Mounted on the stringer 11 of the batten 1 is the weaving reed 3 .
  • the batten 1 is coupled by a connecting rod 4 with a drive mechanism 5 .
  • the beating- up position of the batten 1 is indicated by continuous line, when the leaf springs 12 are not pre-loaded and when the batten 1 beats up the weft, which has already been inserted into the shed, into the face of the formed fabric.
  • Fig.1 further illustrates some parts of the drive mechanism 5 .
  • the connecting rod 4 is hinge-coupled with a crank 51 , pivotably mounted on the frame 2 of the machine.
  • the rotation axis of the crank 51 is the axis of the crank shaft 52 mounted pivotably in the frame 2 of the machine, the driven pulley 53 of the toothed belt drive of the drive mechanism 5 is fixed on the crank shaft.
  • Fig. 2 shows a drive pulley 55 , which is mounted pivotably in the frame 2 of the machine, whereby it is connected with an unillustrated outlet member of the switchable drive clutch 56 , coupled with the electric drive 6 mounted on the frame 2 of the machine.
  • the electric drive 6 comprises a working drive electric motor 61 and a starting drive electric motor 62 .
  • the output shafts of the electric motors 61 , 62 are mutually coaxial, the electric motors 61, 62 being arranged in position with the shafts facing each other.
  • the shafts of the electric motors 61 , 62 are connected to the hubs in the body of the switchable drive clutch 56 .
  • the switchable drive clutch 56 enables to engage the drive pulley 55 into contact with the output shaft of the starting drive electric motor 62 , or with the output shaft of the working drive electric motor 61 , or engage the drive pulley 55 in interposition into synchronous mutual contact with the output shafts of both electric motors 61 , 62 .
  • Control of the switchable drive clutch 56 and electric motors 61 , 62 is coupled with the control unit 7 of the weaving machine.
  • the switchable drive clutch 56 Before the start of the weaving machine the switchable drive clutch 56 is connected with the output shaft of the starting drive electric motor 62 . After its start during the first half-turn of the driven pulley 53 the batten 1 is moved by the crank 4 to the position of the weft insertion. Since the starting drive electric motor 62 is low-speed, it has a high torque, even though its performance is relatively low, and during this shifting its kinetic energy is converted into potential energy of the flexibly deformed leaf springs 12 . Theoretically, as early as at this point, the control unit 7 may give an impulse to the switchable drive clutch 56 to connect the output shaft of the working drive electric motor 61 to the drive pulley 55 and to start the working drive electric motor 61 .
  • the output shafts of both electric motors 61 , 62 can be connected to the drive pulley 55 by means of the switchable drive clutch 56, whereupon after the impulse from the control unit 7 the switchable drive clutch 56 disconnects the drive pulley 55 from the output shaft of the starting drive electric motor 61 and the starting drive electric motor 62 switches off.
  • the starting drive electric motor 62 assists the working drive electric motor 61 in the stretching of the leaf springs 12 into the position of the weft insertion, which is in principle the back dead centre of the movement of the batten 1 , where both electric motors 61 , 62 stop running. Subsequently the starting drive electric motor 62 is disconnected, the movement of the batten 1 to the beat-up position is started and in this manner the potential energy stored in the leaf springs 12 is converted, whereupon the connected working drive electric motor 61 starts up and reaches operating speed. That means that the starting drive electric motor 62 is only interconnected with the working drive electric motor 61 in the phase of "stretching" of the machine - of the batten 1 .
  • the starting drive electric motor 62 is used for "manual" operations with the batten or positioning with the batten 1 , which are performed at a low speed and during which the decreased performance of the working drive electric motor 61 would not be sufficient.
  • either both electric motors 61 , 62 work simultaneously, or the "manual" operations or positioning are carried out only by the starting drive electric motor 62 , while the working drive electric motor 61 is connected just as a passive load.
  • the device according to the invention relating to a weaving machine enables to employ the working drive electric motor 61 with significantly lower performance, than it would certainly have if the starting drive electric motor 62 had not been used, and so it is possible to use the working drive electric motor 61 , which is considerably cheaper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP13181011.1A 2012-08-31 2013-08-20 Method and device for starting a weaving machine Not-in-force EP2703532B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2012-593A CZ308027B6 (cs) 2012-08-31 2012-08-31 Způsob a zařízení k rozběhu tkacího stroje

Publications (2)

Publication Number Publication Date
EP2703532A1 EP2703532A1 (en) 2014-03-05
EP2703532B1 true EP2703532B1 (en) 2015-09-30

Family

ID=49118289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13181011.1A Not-in-force EP2703532B1 (en) 2012-08-31 2013-08-20 Method and device for starting a weaving machine

Country Status (2)

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EP (1) EP2703532B1 (cs)
CZ (1) CZ308027B6 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222857A (zh) * 2016-09-14 2016-12-14 南通纺织丝绸产业技术研究院 纬纱曲折形态可电子设计机织物打纬机构及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106245205A (zh) * 2016-08-28 2016-12-21 浙江国力纺织有限公司 一种织机连杆打纬机构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808202A1 (de) * 1978-02-25 1979-09-06 Jeandaud Jean Claude Verfahren und vorrichtung zur steuerung der bewegung des webeblattes eines webstuhls oder einer webmaschine
DE3325591C2 (de) * 1983-07-15 1984-11-15 Lindauer Dornier Gmbh, 8990 Lindau Anordnung zur Entlastung der Antriebsmechanismen an Webmaschinen
IT1269445B (it) 1994-01-20 1997-04-01 Nuovopignone Ind Meccaniche Ef Sistema elettronico di avviamento rapido, particolarmente adatto per telai ad aria
GB9605059D0 (en) 1996-03-09 1996-05-08 Palmer Raymond L Drive system
DE19914131A1 (de) 1999-03-27 2000-10-05 Dornier Gmbh Lindauer Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen
DE10331916A1 (de) * 2003-07-15 2005-02-24 Lindauer Dornier Gmbh Antriebsvorrichtung zur Erzeugung einer hin- und hergehenden Bewegung eines angetriebenen Bauteil, insbesondere in Webmaschinen
CZ302391B6 (cs) * 2003-10-07 2011-04-27 VÚTS, a.s. Tkací stroj a bidlen tkacího stroje
DE102006017182B3 (de) 2006-04-12 2007-09-06 Lindauer Dornier Gmbh Verfahren und Antriebsanordnung zum Betreiben einer Webmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222857A (zh) * 2016-09-14 2016-12-14 南通纺织丝绸产业技术研究院 纬纱曲折形态可电子设计机织物打纬机构及其使用方法

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Publication number Publication date
CZ308027B6 (cs) 2019-11-06
EP2703532A1 (en) 2014-03-05
CZ2012593A3 (cs) 2014-03-12

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