EP2118350A1 - Verfahren zum ansteuern von antriebsmotoren und steuerung für antriebsmotoren einer webmaschine - Google Patents
Verfahren zum ansteuern von antriebsmotoren und steuerung für antriebsmotoren einer webmaschineInfo
- Publication number
- EP2118350A1 EP2118350A1 EP08715819A EP08715819A EP2118350A1 EP 2118350 A1 EP2118350 A1 EP 2118350A1 EP 08715819 A EP08715819 A EP 08715819A EP 08715819 A EP08715819 A EP 08715819A EP 2118350 A1 EP2118350 A1 EP 2118350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tolerance value
- regulating
- control device
- weaving
- size
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009941 weaving Methods 0.000 claims abstract description 88
- 230000001360 synchronised effect Effects 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 38
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 18
- 230000006978 adaptation Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 13
- 230000027455 binding Effects 0.000 description 4
- 238000009739 binding Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010020112 Hirsutism Diseases 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
Classifications
-
- 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
-
- 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 controlling drive motors of a weaving machine with at least one first drive motor which drives at least one first element and is coupled to at least one first rotary encoder, a second drive motor which drives at least one second element and is coupled to at least one second rotary encoder. wherein the drive motors are controlled so that the elements are synchronized to each other in at least one predetermined rotational angular position, and a tolerance value is specified for an accuracy of the synchronization in the at least one rotational angular position.
- WO 2004/092467 A1 discloses a method for operating a loom with a plurality of drive motors, wherein the elements driven by the drive motors are synchronized in each case in at least one predetermined rotational angle position to an imaginary synchronization shaft.
- Each of the elements and also each of the drive motors need not be exactly synchronized to a predetermined rotational angular position of the imaginary synchronization shaft. Rather, they can be synchronized with a tolerance to the predetermined rotational angular position of the imaginary synchronization wave. A value for this tolerance can be set differently for each weft entry.
- the invention has for its object to provide a method for driving the drive motors of a loom, through which energy consumption is optimized. It is a further object of the invention to create a corresponding control and / or regulating device and an associated loom.
- This object is achieved by a method for driving drive motors of a weaving machine with at least one first drive motor which drives at least one first element and is coupled to at least one first rotary encoder, a second drive motor which drives at least one second element and coupled to a second rotary encoder is, wherein the drive motors are controlled so that the elements are synchronized in at least one predetermined rotational angular position to each other, a tolerance value is specified for accuracy of synchronization in the at least one rotational angular position, and the size of the tolerance value is set in dependence of at least one Webparameters.
- These weaving parameters are in particular an available shot time, thread properties which affect a mean weft thread speed, a weave weave, a weaving machine speed or the like.
- the elements driven by the drive motors are to be synchronized with each other as accurately as possible, such a synchronization is usually associated with a high expenditure of energy.
- the invention is based on the recognition that an exact synchronization or a synchronization with only a very small deviation is not always necessary.
- a weaving parameter such as available shot time, fabric weaves, weaving machine speeds or the like, it is possible to perform a synchronization only to the extent that is at least sufficient for a weaving process. This can optimize energy consumption.
- a synchronization may be necessary only at a single rotational angle position.
- the driven elements such as a sley and shedding facilities, are synchronized in a common zero point.
- the shedding device is synchronized relative to the angle of the sley to the start and / or end of a weft insertion with the sley.
- the tolerance value required at the further rotational angle positions can deviate from the tolerance value in the first, synchronized rotational angular position.
- the rotary encoders measure angular positions of the driven elements in one embodiment.
- an angular position of the driving motor is measured and the value converted, for example, taking into account a gear stage to an angular position of the driven element.
- a shedding device is driven by the second drive motor.
- the first drive motor drives, for example, a sley, wherein the second drive motor can be operated in slave mode to the first drive motor. In other embodiments, both drive motors are operated in slave mode.
- a drive motor for example, a tissue receptacle, an edge forming device, such as a Kanteneinlegevorraum, or other devices of the loom, which must be at least partially synchronized with other elements, in particular with the main shaft or the Webladewelle, driven.
- the size of the tolerance value is adjusted as a function of a weave weave to be woven, with a greater tolerance value being selected for uniform weave weaves than for uneven weaves.
- uneven bonds are fabric weaves in which the number of warp threads to be moved and thus, for example, weaving shafts to be moved change in successive picking cycles. For example, to weave a 1/1 fabric weave, the same amount of warp threads are moved up and down in each pick cycle. Such a movement is relatively uniform and a drive motor for driving a shedding device, such as a heald, will run relatively smoothly without control and / or control interventions with a certain tolerance.
- the number of warp threads to be moved changes for each weft insertion, and thus, for example, the number of heddles to be moved.
- Such a movement of the shedding device is comparatively irregular, so that changing driving forces and / or more control or regulating operations are necessary in order to operate the shedding device uniformly.
- a lesser tolerance to be maintained is set to ensure that the shedding means is operated correctly.
- a larger tolerance value can be selected, since usually fewer interventions are necessary here.
- Such an adaptation of the tolerance value makes it possible, on the one hand, to increase the reliability of the shedding device in order to achieve better weaving results and, on the other hand, to increase energy efficiency. consumption, because unnecessary control and / or regulating interventions are avoided.
- the size of the tolerance value is set as a function of the material of the weft thread.
- the material of the weft thread can exert a not insignificant influence on the entry speed of the weft thread. If the compressed air entrains the weft yarn very well, as is the case, for example, with spun fiber yarns, larger tolerances can be permitted at the start and on arrival at the maximum available shot time. With “slow" weft threads, on the other hand, the entire shot time available for a weft insertion is required, so that only small tolerance values can be admitted at the correct starting time and at the correct time of arrival.
- the available weft insertion time is generally sufficient even if weft insertion is started at a time later than the correct time. With a slow weft, however, the entire available weft insertion time for weft insertion may also be required.
- a strong energy saving is possible by adjusting the tolerance value to the weft type in air jet looms. So it is conceivable, for example, that for a very fast thread tolerance deviation in the rotational angle position is tolerated by 20 °, whereas for a slow thread a maximum deviation in the rotational angle position is required by 5 °.
- the size of the tolerance value is set as a function of a (mean) weaving machine speed, wherein at low weaving machine speeds a larger tolerance value is selected than at high weaving machine speeds.
- a weaving machine speed for example a speed of 1200 rounds per minute
- a relatively exact synchronization is required for a successful operation of the weaving machine.
- low weaving machine speeds for example at speeds of 600 rounds per minute
- a greater deviation in the angular position is tolerable.
- the tolerance value can be adjusted, for example, from weft to weft.
- a tolerance value is infinitely variable to specific weaving parameters
- certain weaving parameters and associated tolerance values can be determined beforehand and stored in a table.
- the tolerance value can be set individually for each weaving cycle and / or each weft to be fed in. It is conceivable, even with unchanged weaving parameters, to set the tolerance values as a function of the weaving cycle For example, it is conceivable to store the tolerance values for ten consecutive shots in a tolerance value sequence and thus make them available.
- the tolerance value is set in a forward-looking manner.
- a weave pattern or a weft thread type to be introduced in regions can be taken into account and the drive of the second drive motor can thus be converted to the changed weaving parameters.
- the tolerance value for a transitional period is set to a low value. Even if the change of the weave pattern allows a loosening of the tolerance limits, this ensures that in the transition area weaving errors are prevented.
- a transitional period is provided in terry cloth weaving machines when transferring from terry cloth to a normal fabric.
- An adaptation to the changed weave pattern preferably takes place only after the definable transitional period. This also prevents instabilities from rapid changes of the weaving parameters due to multiple adjustments.
- the first element and / or the second element are synchronized to form an imaginary synchronization wave.
- the second element is indirectly synchronized with the first element without any irregularities in the operation of the first element affecting the operation of the second element.
- a control and / or control device for driving drive motors of a weaving machine with at least one first drive motor which drives at least a first element and is coupled to at least one first rotary encoder, a second drive motor which drives at least one second element and is coupled to at least one second rotary encoder, wherein the control and / or control means comprises means by which the drive motors are controllable such that the elements are synchronized with each other in at least one predetermined rotational angle position, a tolerance value can be predetermined by the regulating and / or control device for accuracy of the synchronization in the at least one rotational angular position and the regulating and / or control device Has means by which the size of the tolerance value in dependence of at least one web parameter can be determined.
- the user can be supported in the setting of the tolerance value by means of tables and / or suitable devices, so that adaptation to the weaving parameters is also possible by a user with little experience.
- an adaptation to the weaving parameters takes place automatically.
- an adaptation device is provided in one embodiment, which can be implemented as part of the control and / or control unit or as a separate unit.
- the adaptation device comprises means by which the tolerance value can be adapted in a forward-looking manner.
- control and / or control device comprises means by which the second element in the rotational angle position at the beginning of a weft insertion with the first element is synchronized.
- the beginning of the weft insertion is, for example, at 80 ° rotational position with respect to a common zero point.
- the second element can then assume an arbitrary angular position between 75 ° and 85 °. take when the first element occupies the angular position of 80 °. Of course, this can also be defined vice versa.
- a shedding device in particular a dobby, can be driven by means of the second drive motor.
- the first drive motor drives in particular a sley.
- information about a tissue binding to be woven is present in the control and / or regulating device, so that the size of the tolerance value can be determined as a function of the tissue weave to be woven, wherein a greater tolerance value is selected for regular weave bindings than for irregular weaves weaves.
- the control and / or control device is also used, for example, to control the drive motor for the shedding device.
- information about a tissue binding to be woven is present in the control and / or regulating device.
- the shedding device is operated via a separate control and / or control device, wherein the separate control and / or control devices exchange information about a tissue bond and / or a tolerance value to be maintained.
- information about a material of the weft thread to be introduced can be supplied to the regulating and / or control device, so that the size of the tolerance value can be determined as a function of the material of the weft thread.
- the information can be stored, for example, in advance of a pattern to be woven in a memory device and can be fed to the control and / or control device.
- information about a weaving machine speed is present in the control and / or regulating device, so that the size of the tolerance value can be determined as a function of the weaving machine speed, wherein, for example, at low weaving machine speeds a greater tolerance value is selected than at high weaving machine speeds.
- the regulating and / or control device also serves, for example, to control the drive motor for the shedding device and / or for a sley.
- information about a desired weaving machine speed is available in the regulating and / or control device.
- the shedding device and / or the sley are operated via separate control and / or control devices, wherein the separate control and / or control devices exchange information about a desired speed and / or a tolerance value to be maintained.
- control and / or control device has at least one memory unit in which at least three stages of predefined tolerance values are stored.
- the storage unit can be designed as a component with the control and / or control device. In other embodiments, separate components are provided, which are in operative connection with each other.
- the regulating and / or control device comprises an imaginary synchronization shaft, wherein the movements of the first element and / or of the second element can be synchronized to the imaginary synchronization shaft.
- the imaginary synchronization wave is known, for example, from WO 2004/092467 A1.
- the tolerance value for a transitional period can be set to a small size when changing the weaving parameters. This prevents that when a change in the weaving parameters abruptly a tolerance value is increased and thereby discontinuities in the scheme could arise.
- the object is further achieved by a weaving machine with a regulating and / or control device according to the invention.
- the loom comprises an output unit, wherein at least one set tolerance value can be optically and / or acoustically displayed on the output unit. As a result, a set tolerance value can be checked in a simple and fast manner.
- FIG. 1 shows a second drive motor with an associated drive according to a first embodiment of the invention
- Fig. 2 a second drive motor with an associated drive according to a second embodiment
- Fig. 1 shows schematically a first drive motor 1, which via a gear stage 11, a drive shaft 12 for a first element, namely a sley 13, drives.
- Fig. 1 further shows a second drive motor 2, which is also referred to as a secondary drive motor, and which drives via a gear stage 21, for example, designed as a dobby shedding device 3.
- the shedding device 3 comprises a shaft 31, which is connected via linkage 32 with WebMften, not shown.
- the driven by the first drive motor 1 drive shaft 12 is commonly referred to as the main drive shaft.
- the main drive shaft makes a 360 ° turn.
- the shafts driven by shedder 3 and linkage 32 i. raised and lowered heddle shafts, forming a shed into which a weft, not shown, is entered.
- At an angular position of 0 ° or 360 ° of the main shaft 12 which strikes the sley 13, not shown reed suggests the registered weft.
- the shed is changed by raising and lowering other healds, after which the next weft thread is entered.
- the change of the shed takes place, for example, in one embodiment, even before the registered weft thread is finally struck. In this case, warp threads of the upwardly moving healds intersect with warp threads of the downwardly moving heddle shafts.
- the first drive motor 1 is driven by means of a control and / or control device 4 comprising a control unit 40.
- the control unit 40 is supplied for this purpose, a signal of a coupled to the drive shaft 12 rotary encoder 41.
- the second drive motor 2 is driven by means of a control and / or control device 5 comprising a control unit 50.
- the rule- Unit 50 a signal of a rotary encoder 51 is supplied, which detects a position of the shaft 31 of the shedding device 3.
- the control unit 50 is further supplied with a signal of the rotary encoder 41, so that a drive of the second drive motor 2 is possible such that a movement of the shed forming device 3 with the movement of the sley 13 is synchronized.
- the synchronization takes place according to the invention while maintaining a tolerance value.
- the tolerance value is supplied to the control and / or regulating device 5 in the illustrated embodiment via an adaptation device 6.
- the adaptation device 6 is designed as a component with the control and / or regulating device 5, in particular with the control unit 50.
- the tolerance value is set according to the invention as a function of at least one weaving parameter, such as an available weft insertion time x1, a weave weave x2 and / or weaving speeds x3. Other parameters such as a material of the weft thread or the like are conceivable.
- the weaving parameters x1, x2, x3 are supplied to the adaptation device 6 for adapting the tolerance value, so that the tolerance value can be automatically adapted by the adaptation device 6 to the weaving parameters.
- a so-called look-up table can be created in advance, whereby tolerance values are defined for specific weaving parameters and stored in the look-up table.
- the tolerance value is set as a function of a tissue binding x2 to be woven.
- a uniform or straight weaves for example, a 1/1 weave
- the shaft 31 is relatively uniformly loaded.
- the tolerance value is therefore chosen very narrow according to the invention, in order nevertheless to achieve a good weaving result.
- the tolerance value is set as a function of the available weft insertion time x1 and / or the material of a weft thread to be introduced. At high weft speeds (with fast weft threads), entry into the shed is possible without error, even if the start is delayed. A permissible deviation in the synchronization of the rotational angle positions is therefore greater than selectable with slow weft threads.
- the tolerance value is set as a function of an average weaving machine speed x3. At low weaving machine speeds, a larger tolerance value is selected than at high weaving machine speeds.
- the control and / or regulating devices 4, 5 include in embodiments of the invention storage units in which torques and / or torque profiles, or speeds and / or speed characteristics are stored.
- the motors 1, 2 are, for example, as known from WO 99/27426 drivable.
- FIG. 2 shows schematically a second embodiment of the invention comprising the second drive motor 2, wherein the second drive motor 2 is adapted to the rotation angle curve of an imaginary synchronization shaft.
- the components according to FIG. 2 essentially correspond to the components according to FIG. 1 and to a detailed description of these components. - -
- the data of the control units 40, 50 of a common control and / or regulating device 7 is supplied, by which the setpoints for driving the first drive motor 1 and the second drive motor 2 are synchronized to a common imaginary synchronization wave.
- the control and / or regulating device 7 and the control units 40, 50 can be realized as shown as separate components or as a common component.
- the control and / or regulating device 7 can be connected, for example, to an input unit (not shown) and / or a memory unit, not shown, by means of which setpoint values for the course of the imaginary synchronization wave can be predetermined.
- shedding device 3 can be operated by the second drive motor 2 shown in FIGS. 1 and 2 and / or further drive motors, for example edge forming devices and / or tissue receptacles.
- second drive motor 2 shown in FIGS. 1 and 2 and / or further drive motors for example edge forming devices and / or tissue receptacles.
- edge forming devices and / or tissue receptacles for example edge forming devices and / or tissue receptacles.
- Further weaving parameters are, for example, the weave pattern, the warp tension and the weft density. If a according to WO 99/27426 driven first drive motor is provided, the weaving speed can be changed from shot to shot.
- the size of the tolerance value for the synchronization of shot to shot in particular depending on the material of the respectively inserted weft thread, depending on the pattern in which weft threads are entered, depending on the process a weft from a weft bobbin, etc.
- Fig. 3 shows schematically a profile of the tolerance value T over six weaving cycles, ie six revolutions of the weaving machine by 360 °.
- Tolerance value T in the illustrated embodiment is the measure of a maximum permissible deviation of the rotational angle positions of the shedding device, i. of the rotational angle position of the drive shaft 12 of the sley 13.
- a tolerance value is also relative to an imaginary synchronization axis and / or definable for other elements.
- a weft insertion begins in the illustrated embodiment in each weaving cycle at 80 ° angular position.
- the maximum available weft insertion time ends at 240 ° angular position, this angular position being also referred to as the end of the weft insertion, although an actual weft insertion may end at an earlier point in time.
- the tolerance value T changes with each weaving cycle, with better accuracy at the beginning and end, respectively, of the weft insertion. a lower tolerance value is required.
- the weave pattern underlying the illustrated weave has uneven weave weave and, in a third weave cycle III, uniform weave weave. Due to the uneven fabric weave, better accuracy is required in the first weave cycle I, i. a lower tolerance value T than in the third weaving cycle.
- the tolerance value T which is sufficiently high for the fifth weaving cycle V is also already anticipated.
- the course of the tolerance value T according to FIG. 3 is merely exemplary and multiple deviations are possible, so that energy consumption for a respective weave pattern can be optimized.
- a relatively low tolerance value can also be set in the case of a stop of each weft thread in such a course, so that the deviation remains low even during the stop and a good fabric quality is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007009297A DE102007009297A1 (de) | 2007-02-19 | 2007-02-19 | Verfahren zum Ansteuern von Antriebsmotoren und Steuerung für Antriebsmotoren einer Webmaschine |
PCT/EP2008/001219 WO2008101642A1 (de) | 2007-02-19 | 2008-02-16 | Verfahren zum ansteuern von antriebsmotoren und steuerung für antriebsmotoren einer webmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2118350A1 true EP2118350A1 (de) | 2009-11-18 |
EP2118350B1 EP2118350B1 (de) | 2013-07-31 |
Family
ID=39539581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08715819.2A Not-in-force EP2118350B1 (de) | 2007-02-19 | 2008-02-16 | Verfahren zum ansteuern von antriebsmotoren und steuerung für antriebsmotoren einer webmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2118350B1 (de) |
CN (1) | CN101663426B (de) |
DE (1) | DE102007009297A1 (de) |
WO (1) | WO2008101642A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3608458A1 (de) * | 2018-08-09 | 2020-02-12 | Tsudakoma Kogyo Kabushiki Kaisha | Synchrones steuerungsverfahren für eine webmaschine sowie webmaschine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3214307B2 (ja) * | 1995-09-04 | 2001-10-02 | 株式会社豊田自動織機 | 織機における開口制御方法及び装置 |
EP0893525A1 (de) | 1997-07-24 | 1999-01-27 | Sulzer Rüti Ag | Antriebsanordnung für eine Webmaschine und Webmaschine mit Antriebsanordnung |
BE1011560A3 (nl) | 1997-11-21 | 1999-10-05 | Picanol Nv | Weefmachine en werkwijze voor het sturen en/of het starten en/of het stoppen van een aandrijfmotor. |
BE1013175A3 (nl) * | 1999-12-10 | 2001-10-02 | Picanol Nv | Aandrijfsysteem voor een machine. |
DE20021049U1 (de) * | 2000-12-12 | 2001-03-29 | Lindauer Dornier Gmbh, 88131 Lindau | Antriebsanordnung für eine Webmaschine und Fachbildemaschine |
CN1274893C (zh) * | 2001-12-27 | 2006-09-13 | 东华大学 | 参数设置法消除织机停车稀密路的控制系统及其使用方法 |
DE10206972A1 (de) * | 2002-02-20 | 2003-09-04 | Dornier Gmbh Lindauer | Antriebsanordnung einer Webmaschine und Fachbildemaschine mit getrennter Antriebstechnik |
EP1620588B2 (de) | 2003-04-17 | 2016-10-05 | Picanol | Verfahren zum betreiben einer webmaschine |
DE10318818B4 (de) * | 2003-04-17 | 2011-12-22 | Picanol N.V. | Verfahren zum Betreiben einer Webmaschine, sowie eine Webmaschine |
JP5132158B2 (ja) * | 2007-01-29 | 2013-01-30 | パナソニック株式会社 | 電源システム、電源システムの電力供給制御方法及びその電力供給制御プログラム |
-
2007
- 2007-02-19 DE DE102007009297A patent/DE102007009297A1/de not_active Withdrawn
-
2008
- 2008-02-16 EP EP08715819.2A patent/EP2118350B1/de not_active Not-in-force
- 2008-02-16 WO PCT/EP2008/001219 patent/WO2008101642A1/de active Application Filing
- 2008-02-16 CN CN2008800055223A patent/CN101663426B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008101642A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3608458A1 (de) * | 2018-08-09 | 2020-02-12 | Tsudakoma Kogyo Kabushiki Kaisha | Synchrones steuerungsverfahren für eine webmaschine sowie webmaschine |
Also Published As
Publication number | Publication date |
---|---|
WO2008101642A1 (de) | 2008-08-28 |
DE102007009297A1 (de) | 2008-08-21 |
EP2118350B1 (de) | 2013-07-31 |
CN101663426B (zh) | 2012-06-27 |
CN101663426A (zh) | 2010-03-03 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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