WO2006039912A1 - Verfahren zum betreiben einer web- und einer fachbildemaschine - Google Patents
Verfahren zum betreiben einer web- und einer fachbildemaschine Download PDFInfo
- Publication number
- WO2006039912A1 WO2006039912A1 PCT/DE2005/001823 DE2005001823W WO2006039912A1 WO 2006039912 A1 WO2006039912 A1 WO 2006039912A1 DE 2005001823 W DE2005001823 W DE 2005001823W WO 2006039912 A1 WO2006039912 A1 WO 2006039912A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speed
- weaving
- machine
- shedding machine
- fbm
- Prior art date
Links
Classifications
-
- 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
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C1/00—Dobbies
- D03C1/14—Features common to dobbies of different types
- D03C1/146—Independent drive motor
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/12—Driving, starting, or stopping arrangements; Automatic stop motions for adjusting speed
Definitions
- the invention relates to a method for operating a weaving and a shedding machine, the weaving and shedding machine each having at least one own variable-speed electric motor drive, wherein the loom and the shedding machine is operated at a predeterminable speed and wherein the drive in question with an electronic control signal transmitting connected.
- the respective electric motor is variable in speed via suitable means.
- the suitable means may preferably be at least one inverter or at least one inverter.
- the inverter (s) for the weaving machine drive and the inverter (s) for the shingling machine drive can in this case be connected to one and the same DC link; within the meaning of the invention is still spoken by their own drives for the weaving and shedding machine, because the
- Energy input for operating the weaving and shedding machine is not mechanically connected via geared and / or coupling means with the energy input system (drive) of the other machine.
- DE 100 53 079 C1 and DE 102 36 095 B3 disclose methods for starting, operating and stopping web and shed forming machines, each with its own drive.
- DE 100 61 717 A1 and DE 200 21 049 U1 at least one additional flywheel is proposed for the shedding machine.
- the additional flywheel reduces the speed fluctuations resulting from a variable moment of inertia of the shedding machine on the motor shaft. This changeable
- Mass moment of inertia is in turn caused by variable gear ratios through which the masses or moments of inertia of sub-components, such as the shafts of the dobby, act on the motor shaft.
- the reduction of the speed variations leads to a reduction of loads in the gears, whereby higher operating speeds and / or a reduction in susceptibility to vibration is achieved.
- the at least one additional flywheel reduces the dynamics of the shedding machine speed change, on the one hand that restrictions due to the performance of the drive unit (usually expressed as a possible peak torque or potential peak current) are given and the other in that a correspondingly frequent occurring speed change leads to thermal problems of the drive unit, which may be the case even if the performance of the drive unit can perform a one-time speed change with sufficient dynamics.
- More powerful drive units are an unsatisfactory solution because they are expensive and sometimes cause a virtually insoluble installation space problem.
- the problem of large current peaks in the supply network is not solved, which accelerates the
- Shedding machine occur.
- This energy can be converted into heat in a braking resistor, and the radiation area required for this purpose requires a corresponding size of the resistor and the housing possibly surrounding it, which in turn causes problems in terms of costs
- An alternative to the braking resistor is to feed back into the supply network, which is also a cost problem and partly space-related problem with respect to the control cabinet
- Another alternative is seen in DC, or countercurrent or short-circuit braking, ie in braking process, This converts the energy of the shedding machine predominantly into heating of the drive motor or of the drive motors, which requires a correspondingly large-sized motor, which in turn represents a cost and / or installation space problem.
- ⁇ 2 W M of the weaving machine so in relation to the speed ⁇ 2FB M of the shedding machine that either ⁇ 2F BM divided by ⁇ 2 WM or ⁇ 2 WM divided by ⁇ 2 FBM gives a natural number N greater than 1.
- the speeds ⁇ 2W M > n 2FBM are referred to as second speeds.
- a speed change from the first to the second speed of the weaving and shedding machine is asynchronous. That is, the difference ⁇ 2FB M - ⁇ 1FB M in the speed of the shedding machine differs from the difference n 2WM - ⁇ 1W M of loom in magnitude and / or sign.
- the drive of the shedding machine can be designed smaller in terms of peak torque and peak power and / or is thermally relieved. That in the case of two identical shedding machine drives the asynchronous speed change between weaving and shedding machine according to the inventive method thermally less stressful than the one speed change, which takes place synchronously with the loom. If one makes use of the advantage of the method according to the invention to make the shedding machine drive smaller in terms of peak torque and peak power, this in turn generally increases the thermal load during the speed change.
- a technical compromise in which the shedding machine drive is reduced in terms of peak torque and peak power in a mass at which the thermal load of at least not less than that of an unimpeded shedding machine drive synchronous speed change of weaving and shedding machine, but preferably falls below, is recommended ,
- the speed change according to the inventive method is much more dynamic than the synchronous speed change - despite possibly one or more additional flywheel mass (s), which are effective on the shedding machine. So even in the dynamic ranges of a central common direct drive for weaving and shedding machine can be pushed forward.
- a working cycle of the weaving machine ranges from a reed stop to the next reed stop and a working cycle of the shedding machine ranges from a point in which the subject is possible to the next point in which the business is possible.
- FIG. 1 shows the type of shed change in the illustrated in Figure 1
- FIG. 3 shows a comparatively faster comparison with FIG.
- FIG. 4 shows the preferred type of shed change in the case of that shown in FIG.
- Figure 5 shows a further course of the speed change of the Web
- FIG. 6 shows a preferred type of shed change in the case of that shown in FIG.
- Figure 7 shows the course of the speed change of weaving and shedding machine with more than two weft entries per shed.
- FIG. 1 shows a diagram on whose ordinate the rotational speed n of a weaving and shedding machine is indicated and on whose abscissa the time t is indicated, to which a speed change of weaving and / or shedding machine takes place.
- a range reaching up to time t11 is shown, in which the rotational speeds n11_wm of the loom and n11_fbm of the shedding machine are the same.
- the shedding machine has the speed n12_fbm, which is equal to the speed n11_fbm, ie the speed of the shedding machine does not change between t11 and t12. It is different with the weaving machine.
- n11_wm N; N of course and> 1.
- FIG. 2 shows the preferred type of shed change described under FIG.
- 2.1 shows the weaving course corresponding to the speed n11_fbm of the drive shaft of the shedding machine.
- the period of time from one shed 2.5 to the next is designated ⁇ t21.
- no shed change is carried out from the time t11, ie a shed change which may still be taking place at t11 is brought to an end; Thereafter, the shed is kept open and the next shed change started only at a time that it is completed at the earliest at time t12. In this case, the time span from one closure to the next is designated ⁇ t22.
- the shed change takes place at least only every N work revolutions of the drive shaft of the shed forming machine.
- ⁇ t23 N • ⁇ t21, where ⁇ t23 is the time span from one technical qualification to the next technical qualification, in the range from t12 to t13 or when the loom has the rotational speed n12_wm.
- N 2
- the time ⁇ t23 is twice as long as ⁇ t21.
- Figure 3 shows a speed change of the weaving machine, which is faster than shown in Figure 1. That is, the relationship ⁇ OC F BM: ⁇ W w ⁇ > ( ⁇ -IFBM + ⁇ 2 FBM) applies: ( ⁇ MWM + n 2WM ).
- n31_fbm and n32_fbm of the shedding machine are all assumed to be the same, the average rotational speed in the range t31 to t32 corresponds to the average rotational speed in the range t11 to t12 8: 9.
- NN31 2 and the counter is a 3, that is, if the drive shaft of the shedding machine 3 has performed work revolutions and the drive shaft of the weaving machine has performed 2 working revolutions, the positions of the drive shafts of both machines behave again as at time t31, as the speed change was initiated. Assuming that at the time t31 the operational synchronicity between the drives of the weaving and shedding machine has passed, so it is restored after the aforementioned working revolutions of the drive shaft of shedding and weaving machine.
- no shed change is carried out from t31 onwards, ie a shed change which may still be carried out at t31 is brought to an end; Thereafter, the shed is kept open and the next shed change is started only at a time that this is at the earliest completed at time t32.
- Speed of the shedding machine must be smaller than shown in Figure 1. If the rotational speeds n11_fbm (see FIG. 1), n12_fbm (see FIG. 1), n31_fbm and n32_fbm of the shedding machine are all assumed to be the same, then the average rotational speed in the range t33 to t34 corresponds to the average rotational speed in the range t13 to t14 8: 9.
- FIG. 4 shows the preferred type of shed change described under FIG.
- 4.1 shows the shed course in accordance with the speed n31_fbm of the shedding machine.
- the period of time from one technical degree 4.5 to the next following technical qualification is denoted ⁇ t41.
- no shed change is carried out from t31 onwards, ie a shed change which may still still take place at t31 is brought to an end; Thereafter, the shed is kept open and the next shed change is started only at a time that this is at the earliest completed at time t32.
- the period of time from one technical degree to the next following technical qualification is designated ⁇ t42.
- ⁇ FB M ⁇ OCWM> ( ⁇ IIFBM + ⁇ 2 FBM): ( ⁇ WM + ⁇ 2 WM) -
- ⁇ t42 ZN31 • ⁇ t41.
- the shed change takes place at least only every N work revolutions of the drive shaft of the shed forming machine.
- ⁇ t43 N ⁇ ⁇ t41, where ⁇ t43 is the time span from one technical qualification to the next technical qualification, in the range from t42 to t43 or when the loom has the rotational speed n32_wm.
- N 2
- the time ⁇ t43 is twice as long as ⁇ t41.
- the speed change of the weaving machine can each begin with the Webblattanschlag and / or end; but this does not have to be the case.
- the diagram acc. FIG. 5 shows a speed change in which the speed of the shedding machine also changes.
- the speeds n51_wm of the loom and n51_fbm of the shedding machine are the same.
- the speed of the shedding machine changes from n51_fbm to n52_fbm and the speed of the weaving machine from n51_wm to n52_wm.
- n52_fbm N; N course and> 1.
- n51_wm 900min "1
- n52_wm 500min " 1 .
- no shed change will take place from t51, ie a shed change which may still be taking place at t51 will be brought to an end; Thereafter, the shed is kept open and the next shed change is started only at a time that it is completed at the earliest at time t52.
- no shed change will take place from t53, ie a shed change which may still be carried out at t53 will be completed; Thereafter, the shed is kept open and the next shed change is started only at a time that this is at the earliest completed at time t54.
- no shed change is carried out from t53, ie a shed change that may still be required at t53 is brought to an end; Thereafter, the shed is kept open and the next shed change is only started at a time that it is completed at the earliest at time t53.
- a further advantage of the method according to FIG. 5 is a relief of the supply network and, if present, a braking resistor. Because while the weaving machine brakes to the lower speed, the drive accelerates the shedding machine and vice versa, while the drive of the weaving machine speeds up the loom, the drive of the shedding machine brakes the shedding machine. In other words, a direct energy exchange can take place between the two drives if the conditions have been created for this purpose by suitable means, for example a converter intermediate circuit.
- the weft should not touch the commodity chain; this is e.g. in the processing of certain synthetic yarns the case, wherein the friction of the weft yarn on warp threads this particular heated the warp threads and melt phenomena occur on the warp threads.
- the size of the weft insertion window, i. the time to completion considerably limited and thus usually the possible speeds.
- the speed of the shedding machine is selected to be at least twice as high as the speed of the weaving machine, the shed change takes place correspondingly faster, as already shown in Advantage 1.
- These mechanical weft insertion means usually include gripper bands or gripper bars and eccentric and roller levers through which the movement of the gripper bands or gripper bars, but also, for example, shooters done.
- the flow curves of the eccentric are very steep, ie the force or moment load is very high even at relatively low speeds.
- the discharge curves of the eccentric can now be chosen correspondingly flatter;
- the gripper bars or gripper bands a cheaper material can be used.
- the flow curves of the eccentric can be flattened only to a certain extent. The corresponding relief of the gear means higher speeds can be driven.
- the shed-forming machine then runs at 1000 min -1 or greater natural number-multiples of the speed of the loom; 1000 min -1 are selected.
- both the asynchronous speed change of the drives of weaving and shedding machine as well as the synchronous speed change can be provided.
- suitable computer means are provided which are preferably integrated in the control of the weaving and / or shed forming machine in order to use at least one of the following criteria:
- thermal load on the shingraft drive b) thermal load on the weaving machine drive c) achievable fabric output per time (see also "Advantage 2") d) load on the electrical supply network in peak and / or consumption e) air consumption of the air jet loom
- the inventive method is in at least one of its embodiments as a work base the aforementioned computer means known.
- the speed of the shedding machine at least twice as high as the speed of the loom can be selected and the shed change, as already shown in Advantage 1, completed correspondingly faster can be.
- the weft insertion window becomes larger in time; it opens up the possibility to enter the weft slower and with less air requirement.
- FIG. 6 shows the preferred type of shed change described under FIG.
- 6.1 shows the shed change according to speed n51_fbm.
- the time span from one closure 6.5 to the next is designated ⁇ t61.
- no shed change is carried out from the time t51, ie a shed change which may still still be carried out at t51 is brought to an end; Thereafter, the subject is kept open and the next shed change is started only at a time that it is at the earliest completed at time t52.
- the time span from one technical degree to the next following technical qualification is designated ⁇ t62.
- ⁇ t63 N • ⁇ t61, ⁇ t63 wherein the period of time from a shed closing for the next shed closing is indeed to t63, or when the loom, the rotational speed has n52_wm and in the area t52.
- the ramp-shaped speed change of the drive of the loom can each with the
- FIG. 7 shows an example of the method according to the invention, in which the speed n71_wm of the weaving machine and the speed n71_fbm of the shedding machine are the same until the time t71.
- the speed of the shedding machine changes from n71_fbm to n72_fbm and the speed of the weaving machine from n71_wm to n72_wm.
- n72_wm N; N of course and> 1.
- the application of the method according to the invention according to FIG. 7 can then make sense if 2 or more shots per compartment have to be entered.
- the weaving machine again reduces its speed from n72_wm to n71_wm; the speed of the shedding machine increases from n72_fbm to n71_fbm.
- the speed changes of the weaving machine in the range of t71 to t72 and in the range of t73 to t74 are each shown in a ramp; they can also have other forms of progression, cf. Description of Figure 3.
- n81_wm 900min-1
- phase 2 (speed change) from time t ⁇ 1 to time t ⁇ 2
- Weaving machine: from n ⁇ 1_wm to n ⁇ 2_wm; n ⁇ 2_wm 500min-1
- n ⁇ 1_fbm to n ⁇ 2_fbm
- n ⁇ 2_fbm 1000min-1 phase 3 from time t ⁇ 2 to time t ⁇ 3
- n ⁇ 2_wm 500min-1
- n ⁇ 2_fbm 1000min-1 phase 4 (speed change) from time t ⁇ 3 to time t ⁇ 4
- Phase 2 (speed change) from time t101 to time t102 loom: from n101_wm to n102_wm; n102_wm 500min "1
- That the speed of the shedding machine is from the time t104 three times as high as the speed of the loom.
- the method according to the invention is also applicable when the shed forming means, e.g. the shafts in dobby and the boards in the jacquard machine, single drives own.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05801007A EP1799899A1 (de) | 2004-10-09 | 2005-10-07 | Verfahren zum betreiben einer web- und einer fachbildemaschine |
JP2007535014A JP2008516096A (ja) | 2004-10-09 | 2005-10-07 | 織機および開口機械の運転方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004049367.7 | 2004-10-09 | ||
DE102004049367 | 2004-10-09 | ||
DE102005046271A DE102005046271B4 (de) | 2004-10-09 | 2005-09-27 | Verfahren zum Betreiben einer Web- und einer Fachbildemaschine |
DE102005046271.5 | 2005-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006039912A1 true WO2006039912A1 (de) | 2006-04-20 |
Family
ID=35601832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001823 WO2006039912A1 (de) | 2004-10-09 | 2005-10-07 | Verfahren zum betreiben einer web- und einer fachbildemaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1799899A1 (de) |
JP (1) | JP2008516096A (de) |
DE (1) | DE102005046271B4 (de) |
WO (1) | WO2006039912A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2341170A1 (de) | 2009-12-30 | 2011-07-06 | Promatech S.p.A. | Antriebseinheit für Webstühle mit hoher Verwendungsflexibilität mit Sicherheitssteuervorrichtung für möglicherweise kritische Phasenverschiebungen der mechanisch beweglichen Elemente und Webverfahren mit der Einheit |
US9043010B2 (en) | 2011-03-29 | 2015-05-26 | Lindauer Dornier Gesellschaft Mbh | Method and weaving machine for shedding |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10149756A1 (de) * | 2001-10-04 | 2003-04-10 | Picanol Nv | Verfahren zum Antreiben und Antrieb für eine Maschine |
US20040031533A1 (en) * | 2000-10-26 | 2004-02-19 | Valentin Krumm | Method for operating a weaving and shedding machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20021049U1 (de) * | 2000-12-12 | 2001-03-29 | Lindauer Dornier Gmbh, 88131 Lindau | Antriebsanordnung für eine Webmaschine und Fachbildemaschine |
DE10061717B4 (de) * | 2000-12-12 | 2006-01-26 | Lindauer Dornier Gmbh | Antriebsanordnung für eine Webmaschine und Fachbildemaschine |
DE10236095B3 (de) * | 2002-08-07 | 2004-02-05 | Lindauer Dornier Gesellschaft Mbh | Verfahren zum Betreiben einer Web- und einer Fachbildemaschine bei separaten Antrieben |
-
2005
- 2005-09-27 DE DE102005046271A patent/DE102005046271B4/de not_active Expired - Fee Related
- 2005-10-07 JP JP2007535014A patent/JP2008516096A/ja not_active Withdrawn
- 2005-10-07 WO PCT/DE2005/001823 patent/WO2006039912A1/de active Application Filing
- 2005-10-07 EP EP05801007A patent/EP1799899A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040031533A1 (en) * | 2000-10-26 | 2004-02-19 | Valentin Krumm | Method for operating a weaving and shedding machine |
DE10149756A1 (de) * | 2001-10-04 | 2003-04-10 | Picanol Nv | Verfahren zum Antreiben und Antrieb für eine Maschine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2341170A1 (de) | 2009-12-30 | 2011-07-06 | Promatech S.p.A. | Antriebseinheit für Webstühle mit hoher Verwendungsflexibilität mit Sicherheitssteuervorrichtung für möglicherweise kritische Phasenverschiebungen der mechanisch beweglichen Elemente und Webverfahren mit der Einheit |
US9043010B2 (en) | 2011-03-29 | 2015-05-26 | Lindauer Dornier Gesellschaft Mbh | Method and weaving machine for shedding |
Also Published As
Publication number | Publication date |
---|---|
DE102005046271A1 (de) | 2006-04-20 |
DE102005046271B4 (de) | 2006-12-28 |
JP2008516096A (ja) | 2008-05-15 |
EP1799899A1 (de) | 2007-06-27 |
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