EP1048769B1 - Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen - Google Patents
Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen Download PDFInfo
- Publication number
- EP1048769B1 EP1048769B1 EP00102516A EP00102516A EP1048769B1 EP 1048769 B1 EP1048769 B1 EP 1048769B1 EP 00102516 A EP00102516 A EP 00102516A EP 00102516 A EP00102516 A EP 00102516A EP 1048769 B1 EP1048769 B1 EP 1048769B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speed
- loom
- main drive
- starting
- nominal
- 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
Links
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/002—Avoiding starting marks
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/007—Loom optimisation
Definitions
- the invention relates to a method for starting with an electromotive Main drive equipped looms, with at least one flywheel from Main drive is driven, which can be coupled to the main drive shaft via a clutch is.
- looms are powered by an electric motor connected to the AC or three-phase network is connected. It is preferred pole-changing or frequency-controlled motors are used. From this main drive are transmitted via gear means, e.g. via a belt drive, with the main shaft of the Loom driven clutched flywheels. After switching on the main drive the flywheel mass is initially set to a predetermined speed by the motor accelerated. A clutch-brake unit is used to start the weaving machine itself the flywheel is coupled to the main shaft of the weaving machine, and the weaving machine starts from a standstill.
- Such starting devices for weaving machines are special in practice Requirements, for example.
- B. the weaving machine completely until the first sheet stop be engaged. With such a coupling process on the weaving machine, it can occur that the weaving machine is completely up to the first leaf stop is engaged, however, that the momentary rotation speed at the first leaf stop is too small, and so-called contact points arise in the tissue, d.
- H. Ask at which the registered weft does not have sufficient force on the stop edge of the Tissue is struck. A result of less struck streak Weft threads can be seen as streak-like fabric defects.
- Such a method for starting a main drive of a weaving machine is known from the DE 37 33 590 C2 known to the same applicant.
- One disadvantage of there specified method is that for web operations can not be determined to how much the nominal speed of the machine and thus the speed of the flywheel increases must be in order at the first blade stop after coupling the drive to the Main drive shaft of the weaving machine to reach the nominal speed.
- the one described there Activation of the main drive during coupling and reconnection to the network with the larger number of poles e.g. be made so that a certain speed is selected, which lies between the engaging starting speed and the nominal speed.
- the invention has for its object a method for starting weaving machines specify which automatically the required starting speed to start the loom determined.
- the speed of the main loom shaft is at least measured at the first blade stop and the deviation of the measured speed from the Nominal speed is determined, an evaluation and The measured values are saved and a starting speed for the starting process on the The basis of the determined measured values is calculated in such a way that when the Weaving machine at least the nominal speed is reached at the first leaf stop.
- the method according to the invention can therefore be used as a self-learning method for starting a loom.
- the fault in the weaving machine control system is an image of the machine running up to created and saved for the first page stop or over several page stops.
- On the The data obtained is based on the actual starting speed of the drive motor or the flywheel mass, which is necessary to the next start Loom on the main shaft to reach the nominal speed at the first sheet stop.
- the weaving machine is driven in the usual way by a mains-powered electromotive main drive 1, which preferably as pole-changing or frequency-controllable electric motor is formed by the Loom control 8 is controlled.
- a mains-powered electromotive main drive 1 which preferably as pole-changing or frequency-controllable electric motor is formed by the Loom control 8 is controlled.
- a frequency converter 7 which of the weaving machine control 8 predetermined target frequency in the operation of the engine transformed the required frequency and provides the required operating power.
- a signal transmitter 6 for determining the rotational speed of the shaft 5 is located on the main shaft 5 arranged. This can e.g. be designed as a speed sensor.
- the drive is controlled via the weaving machine control 8, which is based on both the main drive 1 and the clutch-brake unit 4 acts.
- Information about the the weaving machine controller 8 receives the instantaneous speed of the skin shaft 5 from the Signal generator 6.
- the weaving machine control system 8 switches the poles of the motor 1 to the smaller number of poles at time t1, so that the motor 1 is accelerated from the nominal speed to its maximum speed. As a result, the flywheel mass 3 is accelerated at idle to the associated higher speed. As a rule, acceleration to the full maximum speed n3 is not necessary.
- the flywheel mass 3 has reached a predetermined starting speed n2, which is the case at time t2, then the main drive 1 is disconnected from its power supply, that is to say no longer supplied.
- the desired starting speed n2 is usually below the maximum speed n3. Only the mechanical energy stored in the flywheel 3 is effective.
- the clutch-brake unit 4 is actuated by the weaving machine control 8 and the flywheel 3 is coupled to the drive shaft 5 of the weaving machine.
- the speed or rotational speed ⁇ n s of the flywheel 3 shown in dashed lines decreases, starting from its starting speed n2, while the speed or rotational speed ⁇ n w of the main shaft 5 of the weaving machine, also shown in dashed lines, starts from a standstill, increases.
- the speeds of the flywheel 3 and the main shaft 5 have reached the same values at the time t3.
- the point in time t3 is selected such that it coincides with the point in time at which the weaving machine first touches the leaf. Because of the initially selected higher starting speed n2 of the flywheel 3, the speeds are adjusted approximately in the range of the nominal speed n1 desired for operation, e.g. B. only a little below or above this nominal value. In this way, the speed of the weaving machine is already high enough at the first sheet stop to be able to hit the first weft thread with practically full force. This avoids contact points in the tissue. During the period of this operating phase, as already mentioned, apart from the mechanical energy stored in the flywheels, preferably no drive is effective.
- connection of the motor with the higher number of poles, which the Nominal speed n1 corresponds, already during the phase of speed adjustment between Inertia 3 and main shaft 5 take place. This can e.g. at a point tx, at which a certain speed nx is reached above the nominal speed n1 of the machine.
- Switching on the motor with nominal speed n1 can also be carried out immediately after Coupling take place. This is particularly intended for the case where Maximum engine speed n3 must be coupled and the nominal speed n1 otherwise would not be achieved.
- the signal transmitter 6 produces a signal Measurement of the current speed of the main shaft 5. These measured values are from the Weaving machine control recorded, and there is a determination of the deviation of the measured speed from the nominal speed n1. If necessary, in the period Between times t2 and t3, further measurements of the speed of the main shaft 5 respectively. This gives a more accurate picture of the speed curve of the main shaft 5 during the start-up process.
- the weaving machine control calculates the required starting speed n2 from these values. to reach the nominal speed n1 at the first blade stop during the next starting process.
- the necessary calculations are based on the determination of the required starting energy, the essentially of the mass "m", the effective diameter "D” and the speed "n” of the flywheel 3 depends.
- the Flywheel mass brought to the previously calculated starting speed n2 and the starting process with this corrected speed n2.
- the Loom control at time t1 the motor 1 via the frequency converter 7 a predetermined higher operating frequency, which leads to an increased speed of the engine 1. This turns the flywheel 3 from idling to the assigned increased speed n2 accelerated.
- the clutch-brake unit 4 is actuated and the flywheel 3 is coupled to the drive shaft 5 of the weaving machine.
- the speed or rotational speed ⁇ n S of the flywheel 3 shown in dashed lines decreases, starting from its speed value n2, while the speed or rotational speed ⁇ n W of the main shaft 5 of the weaving machine, also shown in dashed lines, starts from a standstill, increases.
- the speeds of the flywheel 3 and the main shaft 5 have reached the same values at the time t3.
- the point in time t3 is selected such that it coincides with the point in time at which the weaving machine first hits the loom.
- this adjustment takes place approximately in the range of the nominal speed n1 desired for operation, e.g. B. only a little below or above this nominal value. In this way, the speed of the main loom shaft is already high enough at the first reel to be able to practically hit the first weft with full force.
- the Loom control 8 After coupling the main shaft to the flywheel, the Loom control 8 the necessary change in the target frequency for the Frequency converter 7, depending on the starting angle and the angle of rotation already reached the main shaft 5 to the first blade stop, with as few deviations as possible To reach nominal speed n1.
- the signal transmitter 6 produces a signal Measurement of the speed of the main shaft 5. These measurements are taken from the Weaving machine control recorded and there is a determination of the deviation of the measured speed from the nominal speed n1. As mentioned above, can Additional speed measurements are carried out before the first sheet stop.
- the weaving machine control calculates the required starting speed from these values Inertia 3 at time t2 of engagement and the course of the target frequency specification of the frequency converter, so that the nominal speed n1 at first leaf stop is reached as accurately as possible.
- the flywheel mass is calculated to the one previously calculated Start speed n2 brought and the starting process with this corrected speed performed.
- the machine is updated with the most recently determined data started up and a new data record was created.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Brushes (AREA)
Description
- Fig. 1
- ein schematisches Blockschaltbild des Antriebs einer Webmaschine;
- Fig. 2
- ein Diagramm der Drehzahlverläufe beim Anwerfen einer Webmaschine.
Dadurch wird auch die Schwungmasse 3 im Leerlauf auf die zugeordnete höhere Drehzahl beschleunigt. Im Regelfall ist eine Beschleunigung auf die volle Höchstdrehzahl n3 nicht notwendig.
- 1
- Hauptantrieb
- 2
- Getriebe
- 3
- Schwungmasse
- 4
- Kupplungs-Brems-Einheit
- 5
- Webmaschinenhauptwelle
- 6
- Signalgeber
- 7
- Frequenzumformer
- 8
- Webmaschinensteuerung
- n1
- Nenndrehzahl
- n2
- Startdrehzahl
- n3
- Höchstdrehzahl
- Δns
- Drehzahländerung (Schwungmasse)
- Δnw
- Drehzahländerung (Hauptwelle)
- nx
- Einschaltdrehzahl
- t1
- Start
- t2
- Kuppeln
- t3
- 1. Blattanschlag
- t4
- 2. Blattanschlag
- tx
- Einschaltzeitpunkt (des Motors)
Claims (8)
- Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen, wobei wenigstens eine Schwungmasse vom Hauptantriebsmotor angetrieben wird, die über eine Kupplung an die Webmaschinenhauptwelle kuppelbar ist, und zum Anwerfen der Webmaschine der Hauptantriebsmotor und die wenigstens eine Schwungmasse auf eine vorgegebene, gegenüber ihrer Nenndrehzahl höhere Startdrehzahl gebracht wird, und bei Erreichen der vorgegebenen Startdrehzahl die Schwungmasse an die Hauptwelle der Maschine gekuppelt wird, gekennzeichnet durch folgende Schritte:a) Messen der Drehzahl der Webmaschinenhauptwelle (5) mindestens beim ersten Blattanschlag;b) Ermitteln der Abweichung der gemessenen Drehzahl von der Nenndrehzahl (n1);c) Auswerten der Messwerte in der Webmaschinensteuerung (8);d) Abspeichern der ausgewerteten Messwerte in der Webmaschinensteuerung,e) Berechnen einer Startdrehzahl (n2) für den Anwerfvorgang auf Grundlage der ermittelten Messwerte, derart, dass bei einem erneuten Start der Webmaschinen mindestens die Nenndrehzahl (n1) beim ersten Blattanschlag erreicht wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als elektrischer Antriebsmotor ein polumschaltbarer Motor verwendet wird, dessen untere Drehzahl der Nenndrehzahl (n1) der Webmaschine entspricht.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als elektrischer Antriebsmotor ein frequenzgesteuerter Motor verwendet wird, dessen untere Drehzahl etwa der Nenndrehzahl (n1) der Maschine entspricht.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine höhere Drehzahl als die Nenndrehzahl (n1) für den Zeitpunkt des ersten Blattanschlags vorgebbar ist.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass bei Leerlaufbetrieb, nach einem Abstellen der Webmaschine, eine selbsttätige Umschaltung des elektromotorischen Antriebes (1) auf die Startdrehzahl (n2) erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Zuschalten des Hauptantriebmotors mit Nenndrehzahl (n1) sofort nach dem Einkuppeln erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Zuschalten des Hauptantriebmotors mit Nenndrehzahl (n1) bei einer bestimmten Drehzahl (nx) der Webmaschinenhauptwelle (5) erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Hauptantriebsmotor bereits vor dem Erreichen der Nenndrehzahl (n1) zugeschaltet wird, und die Sollfrequenz für den Frequenzumformer in Abhängigkeit vom Startwinkel und des schon erreichten Drehwinkels der Hauptwelle (5) jeweils so verändert wird, dass mindestens die Nenndrehzahl (n1) der Maschine beim ersten Blattanschlag erreicht wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914131A DE19914131A1 (de) | 1999-03-27 | 1999-03-27 | Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen |
DE19914131 | 1999-03-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1048769A2 EP1048769A2 (de) | 2000-11-02 |
EP1048769A3 EP1048769A3 (de) | 2001-08-22 |
EP1048769B1 true EP1048769B1 (de) | 2003-12-17 |
Family
ID=7902769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00102516A Expired - Lifetime EP1048769B1 (de) | 1999-03-27 | 2000-02-07 | Verfahren zum Anwerfen von mit einem elektromotorischen Hauptantrieb ausgerüsteten Webmaschinen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6307340B1 (de) |
EP (1) | EP1048769B1 (de) |
JP (1) | JP2000282350A (de) |
AT (1) | ATE256776T1 (de) |
DE (2) | DE19914131A1 (de) |
ES (1) | ES2211388T3 (de) |
PT (1) | PT1048769E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2703532A1 (de) | 2012-08-31 | 2014-03-05 | VÚTS, a.s. | Verfahren und Vorrichtung zum Starten einer Webmaschine |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1312165B1 (it) * | 1999-04-01 | 2002-04-09 | Somet Soc Mec Tessile | Dispositivo e metodo di controllo della velocita' di rotazione delmotore principale di un telaio di tessitura. |
DE10061717B4 (de) | 2000-12-12 | 2006-01-26 | Lindauer Dornier Gmbh | Antriebsanordnung für eine Webmaschine und Fachbildemaschine |
DE10149756A1 (de) | 2001-10-04 | 2003-04-10 | Picanol Nv | Verfahren zum Antreiben und Antrieb für eine Maschine |
DE10206972A1 (de) * | 2002-02-20 | 2003-09-04 | Dornier Gmbh Lindauer | Antriebsanordnung einer Webmaschine und Fachbildemaschine mit getrennter Antriebstechnik |
BE1016108A6 (de) * | 2004-07-05 | 2006-03-07 | Picanol Nv | |
DE102004046649B4 (de) * | 2004-09-25 | 2008-04-10 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Webblatt-Antrieb einer Webmaschine |
JP4083767B2 (ja) * | 2005-12-22 | 2008-04-30 | ファナック株式会社 | サーボモータを制御する数値制御装置 |
JP2007332477A (ja) * | 2006-06-13 | 2007-12-27 | Tsudakoma Corp | 織機の駆動装置 |
CZ305914B6 (cs) * | 2010-03-29 | 2016-05-04 | VĂšTS, a.s. | Způsob a zařízení ke snížení negativních účinků dynamických sil mechanické soustavy |
DE102011006368B3 (de) | 2011-03-29 | 2012-02-16 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Verfahren und Webmaschine zur Webfachbildung |
CN103628232A (zh) * | 2012-08-30 | 2014-03-12 | 绍兴文理学院 | 一种高性能剑杆织机的传动系统 |
CN105544075A (zh) * | 2016-01-27 | 2016-05-04 | 太仓市其盛化纤厂 | 一种节能型纺织机刹车组件 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH474590A (fr) * | 1965-04-09 | 1969-06-30 | Moessinger Albert | Métier à tisser à navette à griffe |
US3626992A (en) * | 1965-11-19 | 1971-12-14 | North American Rockwell | Protection and control means for flyshuttle looms |
DE3542650A1 (de) * | 1985-12-03 | 1987-06-04 | Stromag Maschf | Verfahren und vorrichtung zur steuerung und/oder regelung des anfahrvorganges einer webmaschine |
DE3733590A1 (de) * | 1986-12-27 | 1988-07-07 | Dornier Gmbh Lindauer | Verfahren und schaltungsanordnung zum anwerfen von mit einem elektrischen hauptantrieb ausgeruesteten webmaschinen |
BE1003195A3 (nl) * | 1989-04-19 | 1992-01-07 | Picanol Nv | Werkwijze voor het in werking stellen van een weefmachine. |
DE3921318A1 (de) * | 1989-06-29 | 1991-01-10 | Dornier Gmbh Lindauer | Verfahren zum anwerfen einer webmaschine |
US5172732A (en) * | 1989-06-29 | 1992-12-22 | Lindauer Dornier Gesellschaft Mbh | Method for starting a power loom as a function of standstill time |
IT1269445B (it) * | 1994-01-20 | 1997-04-01 | Nuovopignone Ind Meccaniche Ef | Sistema elettronico di avviamento rapido, particolarmente adatto per telai ad aria |
BE1009097A3 (nl) * | 1995-02-07 | 1996-11-05 | Picanol Nv | Weefmachine met aandrijving. |
-
1999
- 1999-03-27 DE DE19914131A patent/DE19914131A1/de not_active Withdrawn
-
2000
- 2000-02-07 PT PT00102516T patent/PT1048769E/pt unknown
- 2000-02-07 EP EP00102516A patent/EP1048769B1/de not_active Expired - Lifetime
- 2000-02-07 ES ES00102516T patent/ES2211388T3/es not_active Expired - Lifetime
- 2000-02-07 DE DE50004764T patent/DE50004764D1/de not_active Expired - Fee Related
- 2000-02-07 AT AT00102516T patent/ATE256776T1/de not_active IP Right Cessation
- 2000-03-24 US US09/535,276 patent/US6307340B1/en not_active Expired - Fee Related
- 2000-03-27 JP JP2000085969A patent/JP2000282350A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2703532A1 (de) | 2012-08-31 | 2014-03-05 | VÚTS, a.s. | Verfahren und Vorrichtung zum Starten einer Webmaschine |
Also Published As
Publication number | Publication date |
---|---|
US6307340B1 (en) | 2001-10-23 |
ES2211388T3 (es) | 2004-07-16 |
DE50004764D1 (de) | 2004-01-29 |
PT1048769E (pt) | 2004-04-30 |
EP1048769A3 (de) | 2001-08-22 |
DE19914131A1 (de) | 2000-10-05 |
EP1048769A2 (de) | 2000-11-02 |
ATE256776T1 (de) | 2004-01-15 |
JP2000282350A (ja) | 2000-10-10 |
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