EP0867543B1 - Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms - Google Patents
Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms Download PDFInfo
- Publication number
- EP0867543B1 EP0867543B1 EP98103545A EP98103545A EP0867543B1 EP 0867543 B1 EP0867543 B1 EP 0867543B1 EP 98103545 A EP98103545 A EP 98103545A EP 98103545 A EP98103545 A EP 98103545A EP 0867543 B1 EP0867543 B1 EP 0867543B1
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- European Patent Office
- Prior art keywords
- scissors
- motor
- motor shaft
- loom
- shaft
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 16
- 238000009941 weaving Methods 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000006870 function Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007659 motor function Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/44—Automatic stop motions acting on defective operation of loom mechanisms
-
- 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
- D03D49/70—Devices for cutting weft threads
Definitions
- the invention relates to a method for controlling and monitoring the cutting function of a electric motor driven thread scissors in weaving machines according to the generic term of Claims 1 and 10.
- a much more flexible thread scissors for weft threads is known from EP 0 284 766 B1, which is considered to be the closest prior art.
- This thread scissors has a drive independent of the main drive, so that the time the cutting process in relation to the weaving cycle by means of a programmable control can be specified arbitrarily.
- the drive consists of a stepper motor on its Shaft the movable cutting edge is attached, the motor shaft of the stepper motor alternately driven forward and backward.
- the object of the invention is to provide a method for controlling and monitoring the cutting function of an electric motor-operated thread scissors and a thread scissors, in particular for separating catch strips, which allows great flexibility in the execution of the cutting function, as well as in a wide variety of mechanical conditions and can be used in a wide variety of local locations. Another task is to increase the lifespan of the scissors drive and to monitor the function and damage of the thread scissors.
- the invention is based on the technical teaching of the claim 1 and of claim 10.
- the engine speed and thus the cutting cycle and cutting time is one electronic control controlled and monitored, which is advantageous in the machine control is integrated and can be programmed via the operator terminal.
- the rotation of the motor shaft is monitored by a monitoring device in the form of a sensor supervised.
- a magnetic one is preferred due to the ambient conditions Sensor (Hall sensor) used.
- Sensor Hall sensor
- optical, capacitive, inductive or other transducers can be used if the special application requires it. Can be advantageous through this type of monitoring both defects of the drive motor and breakage or Jamming of the movable scissor part of the thread scissors are detected.
- the speed of the motor shaft of the Scissor motor in an arbitrarily adjustable ratio to the speed of the main shaft of the Weaving machine drive can be operated. That means that with a fabric with relative high weft density the thread scissors cut, for example, in a ratio of 1: 5 to the weft insertion, that is, after every fifth weft insertion, a single cutting operation for several weft threads takes place, which are tied in the fabric and a catch strip. So there are the weft threads cut the last 5 weft entries between the fabric and the catch bar.
- the thread scissors according to the invention are particularly suitable for cutting off catch strips, because the predeterminable speed ratio of the scissors drive to the main shaft drive Weaving machine advantageously several weft threads already registered with one single cutting process can be cut.
- the thread scissors can as well as a so-called center separating device for separating a fabric web against the Weaving direction can be used, or to separate each individual entered Weft.
- the drive 10 of the thread scissors with a control electronics 2 and the signal-transmitting connection 5,6 to the weaving machine control 1 is shown.
- the drive comprises an electric motor 10, which is preferably designed as a stepper motor, and one Control electronics 2 for controlling the motor functions.
- the control electronics 2 are connected to the weaving machine control system 1 via a signal line 5 connected and receives from this control information for controlling the motor, e.g. Speed, direction of rotation, synchronization signals etc.
- the speed of the motor 10 pre-programmed in the loom control 1 Safety edge scissors 7 are monitored by a monitoring device 3, 4 which is operated via a Signal line 3a is connected to the control electronics 2, which in turn with the Loom control 1 is connected via the signal line 6.
- a control loop is created that allows reliable monitoring of the function of the motor of the thread scissors.
- the device 3 is preferably designed as a magnetic pickup. This is on the Motor shaft 11 of the motor 10 or the device 4 on a part firmly connected to it arranged, which is a permanent magnet, the with each full rotation of the motor shaft 11 Transducer 3 passes and a signal from the control electronics 2 is detected, which is via the Signal line 6 of the weaving machine control 1 is fed.
- the Thread scissors 7 consists of a fixed scissor part 8 and a movable Scissor part 9.
- the motor 10 On the fixed scissor part 8, the motor 10 is arranged, which on it Motor shaft 11 carries a drive plate 12. The motor shaft 11 rotates in a direction 15 at specifiable speed.
- the movable scissor part 9 is arranged such that it can pivot about the scissor axis 8a with respect to the fixed scissor part 8 and comprises an elongated hole 14 in the end opposite the cutting edge, in which a driving pin 13 engages.
- the driving pin 13 is fixed in the edge region of the driving plate 12. Due to the eccentric arrangement of the driving pin 13 with respect to the motor shaft 11, the rotational movement of the motor shaft 11 is converted into a cutting movement of the movable scissor part 9 in a direction of the double arrow 16. A full rotation of the motor shaft 11 of the motor 10 corresponds to a cutting cycle of the thread scissors 7.
- the monitoring device 3, 4 is arranged on the motor 10 and comprises a permanent magnet 4, which is arranged, for example, on the drive plate 12 and which passes a fixed magnetic transducer 3, for example a Hall sensor, with each revolution of the shaft 11 of the motor.
- the Hall sensor emits an electrical signal to the control electronics 2 each time the motor shaft 11 is rotated. If for some reason the rotation of the motor comes to a standstill or unpredictable irregularities occur, this is recognized by the control electronics 2 and sends an error signal to the weaving machine control system 1. An error routine is then initiated and, if necessary, the weaving process is stopped.
- An electric motor drive a thread scissors the motor shaft according to the state of the Technology alternating forwards and backwards, i.e. performing a partial rotation, can also are monitored according to the invention.
- Such thread scissors are used as weft scissors Use.
- the ratio of Partial rotation of the motor shaft of the scissor motor to the speed of the main shaft of the Loom drive does not matter.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Steuerung und Überwachung der Schneidfunktion einer
elektromotorisch angetriebenen Fadenschere in Webmaschinen nach dem Oberbegriff der
Patentansprüche 1 und 10.The invention relates to a method for controlling and monitoring the cutting function of a
electric motor driven thread scissors in weaving machines according to the generic term of
Aus der DE 40 00 856 A1 ist eine Fadenschere zum Abtrennen des eingetragenen Schußfadens bei Webmaschinen bekannt, welche über einen Nockenmechanismus oder dergleichen mit dem Hauptantrieb der Webmaschine mechanisch gekoppelt ist. Die Fadenschere arbeitet synchron zum Maschinenrhythmus. Der Zeitpunkt des Schneidevorgangs ist deshalb in Bezug auf den Webzyklus fest vorgegeben und nicht oder nur durch größere mechanische Umbauten veränderbar.DE 40 00 856 A1 describes a thread scissors for severing the weft thread known in looms, which with a cam mechanism or the like with Main drive of the loom is mechanically coupled. The thread scissors work synchronously with Machine rhythm. The time of the cutting process is therefore in relation to the Fixed weaving cycle and not or only through major mechanical conversions changeable.
Eine wesentlich flexiblere Fadenschere für Schußfäden ist aus der EP 0 284 766 B1, die als nächstliegender Stand der Technik angesehen wird, bekannt. Diese Fadenschere besitzt einen vom Hauptantrieb unabhängigen Antrieb, so daß der Zeitpunkt des Schneidvorgangs in Bezug auf den Webzyklus mittels einer programmierbaren Steuerung beliebig vorgegeben werden kann. Der Antrieb besteht hierbei aus einen Schrittmotor, auf dessen Welle die bewegliche Schneide befestigt ist, wobei die Motorwelle des Schrittmotors abwechselnd vorwärts und rückwärts angetrieben wird.A much more flexible thread scissors for weft threads is known from EP 0 284 766 B1, which is considered to be the closest prior art. This thread scissors has a drive independent of the main drive, so that the time the cutting process in relation to the weaving cycle by means of a programmable control can be specified arbitrarily. The drive consists of a stepper motor on its Shaft the movable cutting edge is attached, the motor shaft of the stepper motor alternately driven forward and backward.
Das abwechselnde Vorwärts- und Rückwärtsdrehen der Motorwelle besitzt jedoch den Nachteil, daß der Schrittmotor hoher Beanspruchung und hohem Verschleiß durch fortwährende Beschleunigungs- und Bremsvorgänge ausgesetzt ist. Weiterhin ist keine Überwachung der Fadenschere auf Funktion oder Beschädigung vorgesehen.However, the alternating forward and reverse rotation of the motor shaft has the disadvantage that that the stepper motor high stress and high wear due to continuous Acceleration and braking processes is exposed. Furthermore, there is no monitoring of the Thread scissors are provided for function or damage.
Aufgabe der Erfindung ist es, ein Verfahren zur Steuerung und Überwachung der Schneidfunktion
einer elektromotorisch angetriebenen Fadenschere und eine Fadenschere, insbesondere zum
Abtrennen von Fangleisten zu schaffen, welches sowohl eine große Flexibilität in der Ausführung
der Schneidfunktion zuläßt, als auch bei den verschiedensten mechanischen Gegebenheiten und
an den verschiedensten örtlichen Lagen einsetzbar ist.
Eine weitere Aufgabe besteht darin, die Lebensdauer des Scherenantriebes zu erhöhen und eine
Überwachung auf Funktion und Beschädigung der Fadenschere vorzusehen.The object of the invention is to provide a method for controlling and monitoring the cutting function of an electric motor-operated thread scissors and a thread scissors, in particular for separating catch strips, which allows great flexibility in the execution of the cutting function, as well as in a wide variety of mechanical conditions and can be used in a wide variety of local locations.
Another task is to increase the lifespan of the scissors drive and to monitor the function and damage of the thread scissors.
Zur Lösung der gestellten Aufgabe ist die Erfindung durch die technische Lehre des Anspruchs
1 und des Anspruchs 10 gekennzeichnet.To achieve the object, the invention is based on the technical teaching of the
Damit besteht der Vorteil, daß z.B. der Motor einer Fangleistenschere während des Betriebs der Fadenschere kontinuierlich in einer Drehrichtung betrieben werden kann und keine Start- und Stopzyklen durchlaufen muß. Das erhöht die Standzeit des Motors.This has the advantage that e.g. the motor of a safety edge shear during the operation of the Thread scissors can be operated continuously in one direction of rotation and no start and Must go through stop cycles. This increases the service life of the engine.
Die Motordrehzahl und damit der Schneidzyklus und Schneidzeitpunkt wird von einer elektronischen Steuerung gesteuert und überwacht, welche vorteilhaft in die Maschinensteuerung integriert ist und über das Bedienterminal programmiert werden kann.The engine speed and thus the cutting cycle and cutting time is one electronic control controlled and monitored, which is advantageous in the machine control is integrated and can be programmed via the operator terminal.
Die Drehung der Motorwelle wird durch eine Überwachungseinrichtung in Form eines Sensors überwacht. Dabei wird aufgrund der Umgebungsbedingungen bevorzugt ein magnetischer Aufnehmer (Hallsensor) eingesetzt. Natürlich können auch optische, kapazitive, induktive oder andere Aufnehmer eingesetzt werden, falls es der spezielle Einsatz erfordert. Vorteilhaft können durch diese Art der Überwachung sowohl Defekte des Antriebsmotors als auch Bruch oder Verklemmung des beweglichen Scherenteils der Fadenschere erfasst werden.The rotation of the motor shaft is monitored by a monitoring device in the form of a sensor supervised. A magnetic one is preferred due to the ambient conditions Sensor (Hall sensor) used. Of course, optical, capacitive, inductive or other transducers can be used if the special application requires it. Can be advantageous through this type of monitoring both defects of the drive motor and breakage or Jamming of the movable scissor part of the thread scissors are detected.
Zur Standzeiterhöhung der Fadenschere ist vorgesehen, daß die Drehzahl der Motorwelle des Scherenmotors in einem beliebig einstellbaren Verhältnis zur Drehzahl der Hauptwelle des Webmaschinenantriebs betrieben werden kann. Das heißt, daß bei einem Gewebe mit relativ hoher Schußdichte die Fadenschere beispielsweise im Verhältnis 1:5 zum Schußeintrag schneidet, d.h., daß nach jedem fünften Schußeintrag ein einziger Schneidvorgang für mehrere Schußfäden erfolgt, die in dem Gewebe und einer Fangleiste abgebunden sind. Es werden also die Schußfäden der jeweils letzten 5 Schußeinträge zwischen dem Gewebe und der Fangleiste geschnitten.To increase the service life of the thread scissors, it is provided that the speed of the motor shaft of the Scissor motor in an arbitrarily adjustable ratio to the speed of the main shaft of the Weaving machine drive can be operated. That means that with a fabric with relative high weft density the thread scissors cut, for example, in a ratio of 1: 5 to the weft insertion, that is, after every fifth weft insertion, a single cutting operation for several weft threads takes place, which are tied in the fabric and a catch strip. So there are the weft threads cut the last 5 weft entries between the fabric and the catch bar.
Vorteilhaft ist außerdem, daß in Abhängigkeit vom Schußmaterial und dem Webmuster auch während eines Rapportwebens (Weben mit hoher Schußdichte) unterschiedliche Drehzahlverhältnisse bestehen können.It is also advantageous that, depending on the weft material and the weaving pattern, too during a repeat weaving (weaving with high weft density) different Speed ratios can exist.
Die erfindungsgemäße Fadenschere ist insbesondere zum Abtrennen von Fangleisten geeignet, da durch das vorgebbare Drehzahlverhältnis des Scherenantriebs zum Hauptwellenantrieb der Webmaschine in vorteilhafter Weise gleich mehrere bereits eingetragene Schußfäden mit einem einzigen Schneidvorgang geschnitten werden können.The thread scissors according to the invention are particularly suitable for cutting off catch strips, because the predeterminable speed ratio of the scissors drive to the main shaft drive Weaving machine advantageously several weft threads already registered with one single cutting process can be cut.
Durch die große Flexibilität bei der Montage und der Ansteuerung kann die Fadenschere jedoch genausogut als sogenannte Mittentrenneinrichtung zum Trennen einer Gewebebahn entgegen der Webrichtung verwendet werden, oder aber zum Abtrennen jedes einzelnen eingetragenen Schußfadens.Due to the great flexibility in assembly and control, the thread scissors can as well as a so-called center separating device for separating a fabric web against the Weaving direction can be used, or to separate each individual entered Weft.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels erläutert.The invention is explained below using an exemplary embodiment.
Hierbei ergeben sich aus den Zeichnungen und deren Beschreibung weitere Merkmale und
Vorteile der Erfindung.
In Figur 1 ist schematisch der Antrieb 10 der Fadenschere mit einer Ansteuerelektronik 2 und
deren signalübertragende Verbindung 5,6 zur Webmaschinensteuerung 1 dargestellt. Der Antrieb
umfasst einen Elektromotor 10, der bevorzugt als Schrittmotor ausgebildet ist, und eine
Ansteuerelektronik 2 zur Steuerung der Motorfunktionen.In Figure 1, the
Die Ansteuerelektronik 2 ist über eine Signalleitung 5 mit der Webmaschinensteuerung 1
verbunden und erhält von dieser Steuerinformationen zur Ansteuerung des Motors, wie z.B.
Drehzahl, Drehrichtung, Synchronisationssignale etc.The control electronics 2 are connected to the weaving
Die in der Webmaschinensteuerung 1 vorprogrammierte Drehzahl des Motors 10 der
Fangleistenschere 7 wird von einer Überwachungseinrichtung 3,4 überwacht, welche über eine
Signalleitung 3a mit der Ansteuerelektronik 2 in Verbindung steht, die wiederum mit der
Webmaschinensteuerung 1 über die Signalleitung 6 verbunden ist. Es entsteht ein Regelkreis, der
eine zuverlässige Überwachung der Funktion des Motors der Fadenschere zulässt.
Die Einrichtung 3 ist bevorzugt als magnetischer Aufnehmer ausgebildet. Dazu ist auf der
Motorwelle 11 des Motors 10 oder an einem mit dieser fest verbundenen Teil die Einrichtung 4
angeordnet, die ein Permanentmagnet ist, der bei jeder Volldrehung der Motorwelle 11 den
Aufnehmer 3 passiert und ein Signal von der Ansteuerelektronik 2 detektiert wird, das über die
Signalleitung 6 der Webmaschinensteuerung 1 zugeführt wird.The speed of the
Tritt ein Defekt am Motor 10 auf oder hat sich die Fadenschere verklemmt, so unterbleibt die
Rotation der Motorwelle 11. Folglich wird der Aufnehmer 3 nicht erregt. Die Ansteuerelektronik
2 sendet ein Fehl-Signal an die Webmaschinensteuerung 1. In der Webmaschinensteuerung
erfolgt daraufhin eine Fehlsignalauswertung, in deren Ergebnis z.B. ein Anhalten des
Webprozesses bewirkt wird.If a defect occurs in the
Eine mögliche Ausbildung der Fadenschere ist in Figur 2 schematisch dargestellt. Die
Fadenschere 7 besteht aus einem feststehenden Scherenteil 8 und aus einem beweglichen
Scherenteil 9. Am feststehende Scherenteil 8 ist der Motor 10 angeordnet, welcher auf seiner
Motorwelle 11 eine Mitnehmerscheibe 12 trägt. Die Motorwelle 11 rotiert in einer Richtung 15
bei vorgebbarer Drehzahl.A possible design of the thread scissors is shown schematically in Figure 2. The
Das bewegliche Scherenteil 9 ist in Bezug auf das feststehende Scherenteil 8 um die Scherenachse
8a schwenkbar angeordnet und umfasst an dem der Schneide gegenüberliegenden Ende ein
Langloch 14, in welches ein Mitnehmerstift 13 eingreift. Der Mitnehmerstift 13 ist fest im
Randbereich der Mitnehmerscheibe 12 angeordnet.
Durch die in Bezug auf die Motorwelle 11 exzentrische Anordnung des Mitnehmerstiftes 13 wird
die Rotationsbewegung der Motorwelle 11 in eine Schneidbewegung des beweglichen
Scherenteils 9 in eine Richtung des Doppelpfeiles 16 umgesetzt.
Dabei entspricht eine Volldrehung der Motorwelle 11 des Motors 10 einem Schneidzyklus der
Fadenschere 7.The
Due to the eccentric arrangement of the driving
A full rotation of the
Die Überwachungseinrichtung 3,4 ist am Motor 10 angeordnet und umfasst einen
Permanentmagneten 4, der z.B. auf der Mitnehmerscheibe 12 angeordnet ist und der bei jeder
Umdrehung der Welle 11 des Motors einen fest angeordneten magnetischen Aufnehmer 3, z.B.
einen Hallsensor passiert. Der Hallsensor gibt bei jeder erfolgten Rotation der Motorwelle 11 ein
elektrisches Signal an die Ansteuerelektronik 2 ab.
Kommt aus irgendeinem Grund die Rotation des Motors zum Stillstand oder es treten nicht
vorhersehbare Unregelmäßigkeiten auf, so erkennt dies die Ansteuerelektronik 2 und gibt ein
Fehlersignal an die Webmaschinensteuerung 1. Daraufhin wird eine Fehlerroutine initiiert und,
falls erforderlich, der Webprozeß gestoppt.The
If for some reason the rotation of the motor comes to a standstill or unpredictable irregularities occur, this is recognized by the control electronics 2 and sends an error signal to the weaving
Ein elektromotorischer Antrieb einer Fadenschere, dessen Motorwelle nach dem Stand der Technik abwechselnd vor- und rückwärts dreht, also eine Teildrehung ausführt, kann ebenfalls erfindungsgemäß überwacht werden. Eine solche Fadenschere findet als Schußfadenschere Verwendung. Bei der Steuerung der Schußfadenschere spielt allerdings das Verhältnis der Teildrehung der Motorwelle des Scherenmotors zur Drehzahl der Hauptwelle des Webmaschinenantriebs keine Rolle. An electric motor drive a thread scissors, the motor shaft according to the state of the Technology alternating forwards and backwards, i.e. performing a partial rotation, can also are monitored according to the invention. Such thread scissors are used as weft scissors Use. When controlling the weft scissors, however, the ratio of Partial rotation of the motor shaft of the scissor motor to the speed of the main shaft of the Loom drive does not matter.
- 11
- WebmaschinensteuerungWeaving machine control
- 22nd
- AntriebsvorrichtungDrive device
- 33rd
- Aufnehmer (Sensor)Transducer (sensor)
- 3a3a
- SignalleitungSignal line
- 44th
- PermanentmagnetPermanent magnet
- 55
- SignalleitungSignal line
- 66
- SignalleitungSignal line
- 77
- FadenschereThread scissors
- 88th
- feststehendes Scherenteilfixed scissors part
- 8a8a
- ScherenachseScissors axis
- 99
- bewegliches Scherenteilmovable scissor part
- 1010th
- Motorengine
- 1111
- MotorwelleMotor shaft
- 1212th
- MitnehmerscheibeDrive plate
- 1313
- MitnehmerstiftDriver pin
- 1414
- LanglochLong hole
- 1515
- RotationsrichtungDirection of rotation
- 1616
- DoppelpfeilDouble arrow
Claims (12)
- Method for controlling and monitoring the cutting operation of yarn scissors, driven by electric motor, in looms, having a rotationally driven main shaft, the scissors drive being an electric driving motor having a programmable electronic control unit which is connected to a loom control in order to transmit signals, characterised in that at least one electrical signal is generated when the motor shaft of the driving motor is rotated, in that the electrical signal is passed to the loom control via the electronic control unit and in that the weaving process is interrupted if there is no signal.
- Method according to claim 1, characterised in that the rotation of the motor shaft comprises a partial or complete rotation.
- Method according to claim 2, characterised in that each partial or complete rotation of the motor shaft generates an electrical signal.
- Method according to claim 2, characterised in that the number of complete rotations of the motor shaft per unit of time is at a specific ratio relative to the rotational speed of the main shaft of the loom per unit of time.
- Method according to claim 1, characterised in that the rotation of the motor shaft of the driving motor is maintained after each electrical signal.
- Method according to claim 4, characterised in that the ratio of the rotational speed of the motor shaft of the driving motor relative to the rotational speed of the main shaft of the loom can be preset manually at the loom control.
- Method according to claim 4, characterised in that the ratio of the rotational speed of the motor shaft of the driving motor relative to the rotational speed of the main shaft of the loom is preset automatically by the loom control dependent on a pattern.
- Method according to claim 1, characterised in that the yarn scissors is a weft thread scissors.
- Method according to claim 1, characterised in that the yarn scissors is a selvedge scissors.
- Yarn scissors, driven by electric motor, in particular for use as selvedge scissors in looms, having a stationary scissors element (8) and a movable scissors element (9) which effects a cutting movement (16), which derives from an electric motor (10), about a scissors axis (8a), the electric motor (10) having a programmable electronic control unit (2) which is connected to a loom control (1) in order to transmit signals, characterised in that the motor shaft (11) of the electric motor (10), or at least an arrangement (12) located on the motor shaft (11), has a first device (4), and in that a second device (3) is located outside the rotation range of the motor shaft (11), and wherein both devices (3, 4) monitor the rotary movement of the motor shaft (11).
- Yarn scissors, driven by electric motor, according to claim 10, characterised in that the device (3) is the receiver of a physical quantity and, at the same time, the transmitter of an electrical quantity and the device (4) is the transmitter of the physical quantity.
- Yarn scissors, driven by electric motor, according to claim 11, characterised in that the device (3) is connected to the loom control (1) via the electronic control unit (2) in order to transmit signals.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19713089 | 1997-03-27 | ||
| DE19713089A DE19713089C2 (en) | 1997-03-27 | 1997-03-27 | Method and device for controlling and monitoring the cutting function of an electric motor-operated thread scissors in weaving machines |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0867543A2 EP0867543A2 (en) | 1998-09-30 |
| EP0867543A3 EP0867543A3 (en) | 1999-12-15 |
| EP0867543B1 true EP0867543B1 (en) | 2001-06-20 |
Family
ID=7824923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98103545A Expired - Lifetime EP0867543B1 (en) | 1997-03-27 | 1998-02-28 | Method and device for controlling and minitoring the operation of yarn scissors driven by electric motor on looms |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6301519B1 (en) |
| EP (1) | EP0867543B1 (en) |
| JP (1) | JP3004624B2 (en) |
| AT (1) | ATE202389T1 (en) |
| DE (2) | DE19713089C2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3652447B2 (en) * | 1996-07-24 | 2005-05-25 | 株式会社ルネサステクノロジ | Tree circuit |
| DE19954139A1 (en) * | 1999-11-11 | 2001-06-07 | Dornier Gmbh Lindauer | Method and device for monitoring the removal of catch strips on weaving machines |
| DE10014366A1 (en) | 2000-03-20 | 2001-10-04 | Dornier Gmbh Lindauer | Inserted weft cutter at the fabric edge has a moving blade operated by an electrical linear movement with an angular offset to the carrier of the fixed blade to occupy little space and give low wear in use |
| DE10224079B3 (en) * | 2002-05-31 | 2004-03-25 | Lindauer Dornier Gmbh | Method and device for successively inserting weft threads into the shed of a weaving machine |
| JP2004244764A (en) * | 2003-02-14 | 2004-09-02 | Tsudakoma Corp | Method for driving trimmed selvage cutter of fragment loom |
| ITMI20031464A1 (en) * | 2003-07-17 | 2005-01-18 | Promatech Spa | ELECTRICALLY OPERATED DEVICE FOR PROGRAMMABLE CUTTING |
| DE502006007250D1 (en) * | 2005-02-23 | 2010-08-05 | Itema Switzerland Ltd | Glue bar for weft threads |
| EP1960852B1 (en) | 2005-12-16 | 2010-01-20 | Siemens Aktiengesellschaft | Monitoring device for a drive device |
| FR2957834B1 (en) * | 2010-03-24 | 2012-03-09 | Infaco | DEVICE FOR POSITIONALLY CONTROLLING TWO ELEMENTS RELATIVE TO EACH OTHER, SUCH AS BLADES OF CUTTER GENERATOR TOOLS AND CUTTING TOOL COMPRISING SAME |
| CN104131396A (en) * | 2014-08-14 | 2014-11-05 | 山东日发纺织机械有限公司 | Direct driving device for electronic scissors used for shearing weft on air-jet loom |
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| US3570550A (en) * | 1968-10-17 | 1971-03-16 | North American Rockwell | Control system for looms |
| US3732896A (en) * | 1971-04-26 | 1973-05-15 | Vyzk Ustav Bavlnarsky | Method of and apparatus for filling the shuttles with weft in progressive shed weaving looms |
| CS165124B1 (en) * | 1973-04-18 | 1975-11-28 | ||
| CH579165A5 (en) * | 1974-06-28 | 1976-08-31 | Rueti Ag Maschf | |
| US4159558A (en) * | 1974-12-24 | 1979-07-03 | Cotonificio Cantoni S.P.A. | Apparatus for the cutting of columns of thread loops |
| US4158373A (en) * | 1976-09-20 | 1979-06-19 | Tsentralny Nauchno-Issledovatelsky Institut Khlopchatobumazhnoi Promyshlennosti | Method of and apparatus for threading the weft thread carriers in travelling-wave looms |
| JPS5593849A (en) * | 1978-12-30 | 1980-07-16 | Toyoda Automatic Loom Works | Timing setting method and apparatus in loom |
| US4480665A (en) * | 1981-01-21 | 1984-11-06 | Nissan Motor Company, Limited | Weft-bar (set mark) prevention system for a loom |
| US4546802A (en) * | 1984-06-04 | 1985-10-15 | Burlington Industries, Inc. | Automatic failure sensor for hot wire cutters |
| US4746848A (en) * | 1985-12-13 | 1988-05-24 | Tsudakoma Corp. | Weft yarn feeding device for a loom |
| BE1000369A4 (en) * | 1987-03-09 | 1988-11-08 | Picanol Nv | Method for ordering a cutting device for impact on wires looms and cutting device used for this purpose. |
| US4850399A (en) * | 1987-06-27 | 1989-07-25 | Lindauer Dorner Gesellschaft M.B.H. | Weaving loom with pneumatic weft thread injection |
| BE1000995A4 (en) * | 1987-10-12 | 1989-05-30 | Wiele Michel Van De Nv | Device for regulating the bite into the cutter unit piece of double looms. |
| JP2668579B2 (en) * | 1989-04-19 | 1997-10-27 | 津田駒工業株式会社 | Driving device for yarn feed cutter |
| IT1236993B (en) * | 1989-12-29 | 1993-05-12 | Roy Electrotex Spa | WEFT FEEDER FOR WEAVING FRAMES WITH PLIERS AND BULLETS |
| DE4000856A1 (en) * | 1990-01-13 | 1991-07-18 | Dornier Gmbh Lindauer | THREAD CUTTING THREAD CUTTER DEVICE OF AN AIR WAVING MACHINE |
| IT1242989B (en) * | 1990-08-29 | 1994-05-23 | Vamatex Spa | PERFECTED DEVICE FOR THE FORMATION OF CIMOSSA IN FRAMES WITHOUT SHUTTLES |
| US5329962A (en) * | 1991-09-03 | 1994-07-19 | Nissan Motor Co., Ltd. | Weft supply changing and threading apparatus |
| IT1273168B (en) * | 1994-04-29 | 1997-07-07 | Panter Srl | WEFT CUTTING DEVICE FOR A WEAVING MACHINE |
| JP2668669B2 (en) * | 1995-11-17 | 1997-10-27 | 津田駒工業株式会社 | Driving device for yarn feed cutter |
| US5735315A (en) * | 1996-09-11 | 1998-04-07 | A.E. Petsche Company, Inc. | Wire loom dobby |
-
1997
- 1997-03-27 DE DE19713089A patent/DE19713089C2/en not_active Expired - Fee Related
-
1998
- 1998-02-28 AT AT98103545T patent/ATE202389T1/en not_active IP Right Cessation
- 1998-02-28 EP EP98103545A patent/EP0867543B1/en not_active Expired - Lifetime
- 1998-02-28 DE DE59800877T patent/DE59800877D1/en not_active Expired - Lifetime
- 1998-03-25 US US09/047,473 patent/US6301519B1/en not_active Expired - Lifetime
- 1998-03-26 JP JP10079036A patent/JP3004624B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE202389T1 (en) | 2001-07-15 |
| EP0867543A3 (en) | 1999-12-15 |
| DE19713089C2 (en) | 2000-07-27 |
| DE19713089A1 (en) | 1998-10-01 |
| DE59800877D1 (en) | 2001-07-26 |
| JPH10298852A (en) | 1998-11-10 |
| US6301519B1 (en) | 2001-10-09 |
| JP3004624B2 (en) | 2000-01-31 |
| EP0867543A2 (en) | 1998-09-30 |
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