EP0799920B1 - Jacquard loom and method of operating said loom - Google Patents

Jacquard loom and method of operating said loom Download PDF

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Publication number
EP0799920B1
EP0799920B1 EP96810214A EP96810214A EP0799920B1 EP 0799920 B1 EP0799920 B1 EP 0799920B1 EP 96810214 A EP96810214 A EP 96810214A EP 96810214 A EP96810214 A EP 96810214A EP 0799920 B1 EP0799920 B1 EP 0799920B1
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EP
European Patent Office
Prior art keywords
jacquard
weaving machine
torque
rotation
sensor
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
Application number
EP96810214A
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German (de)
French (fr)
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EP0799920A1 (en
Inventor
Ernst Eberhard
Klaus Berktold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Itema Switzerland Ltd
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Sulzer Textil AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sulzer Textil AG filed Critical Sulzer Textil AG
Priority to EP96810214A priority Critical patent/EP0799920B1/en
Priority to DE59607360T priority patent/DE59607360D1/en
Priority to JP9016612A priority patent/JPH09273048A/en
Priority to US08/791,923 priority patent/US5755267A/en
Publication of EP0799920A1 publication Critical patent/EP0799920A1/en
Application granted granted Critical
Publication of EP0799920B1 publication Critical patent/EP0799920B1/en
Anticipated expiration legal-status Critical
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms
    • 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
    • D03D51/02—General arrangements of driving mechanism

Definitions

  • the invention relates to a jacquard weaving machine and a Process for operating the jacquard weaving machine.
  • Known jacquard weaving machines include a weaving machine to insert a weft and one Jacquard device to control the formation of the Warp threads.
  • the weaving machine and the jacquard device are usually, as in the document DE-U-9102560.5 disclosed about a gearbox as well as a Cardan shaft connected together and become common driven by the weaving machine motor.
  • Such Arrangement has the disadvantage that an engine with high Performance is required, especially when Drive a large jacquard device. Further points both the weaving machine and the jacquard device in the free run an individual, in function of the Angle of rotation variable torque resulting in a variable angular velocity leads. this will caused by various oscillating, earthed components.
  • the sub-claims 2 to 6 relate to further advantageous embodiments of the device according to the invention.
  • the task continues solved with a method of operating a Jacquard weaving machine according to claim 7.
  • the subclaims 8 to 10 refer to further advantageous ones Operating procedures.
  • the jacquard weaving machine has an additionally acting auxiliary drive, and at least one sensor for detecting the angle of rotation and / or the torque applied between the weaving machine and the jacquard device.
  • the auxiliary drive can, for example, act directly on the jacquard device, or directly on the weaving machine or directly on the cardan shaft.
  • the sensor signal is fed to a control device which controls the auxiliary drive in such a way that speed fluctuations and / or torque fluctuations and / or torque peak values of components of the jacquard weaving machine are reduced.
  • the auxiliary drive usually designed as an electric motor, can act both as a driver and as a brake on the jacquard device.
  • Both the weaving machine and the jacquard device have a torque which is variable as a function of the angle of rotation, the torque additionally depending on operating parameters such as speed, the pattern produced or the type of fabric.
  • the connection of the weaving machine and the jacquard device forces the two devices to have a common speed. This creates a very complex relationship between the angle of rotation and the torque of a jacquard weaving machine.
  • speed control of a jacquard weaving machine the three following, fundamentally different states must be taken into account.
  • this state brings about a high torque in the jacquard device the weaving machine mechanically connecting coupling device, for example in a cardan shaft or in a transmission.
  • the auxiliary motor acts on the jacquard device in such a way that the torque in the coupling device, for example the cardan shaft, is reduced.
  • both the weaving machine and the jacquard device strive for a synchronous movement, both devices requiring a torque that decreases as a function of the angle of rotation, which causes a temporary increase in the angular velocity of the jacquard weaving machine.
  • the auxiliary motor has a braking effect on the jacquard device, which has a stabilizing effect on the speed fluctuation.
  • both devices strive for a concurrent movement, both devices requiring a torque that increases as a function of the angle of rotation, which causes a temporary reduction in the angular velocity of the jacquard weaving machine.
  • the auxiliary motor drives the jacquard device, which also has a stabilizing effect on the speed fluctuations.
  • An advantage of the invention can thus be seen in the fact that speed fluctuations can be reduced and / or that torque peaks in the between the Jacquard device and the loom arranged Have the torque transmission device reduced.
  • Another advantage is that both the Weaving machine as well as the jacquard device itself large speed fluctuations run synchronously with each other, the auxiliary drive the speed fluctuations and / or the torque fluctuations are reduced.
  • Another Advantage of the invention is the fact that for Jacquard loom a standard design loom can be used, in particular to drive one Standard motor has, as by the inventive Device and the corresponding control procedure Excellence is no longer required either or at least partially from the auxiliary drive be applied so that to drive the loom a standard motor is sufficient.
  • Another advantage is in it to see a jacquard weaving which the Has device according to the invention, compared to previously known embodiments with a higher speed is operable, so that more tissue per unit of time can be produced.
  • the mechanical coupling device for Torque transmission between the loom and the Jacquard device can, for example, as one Cardan shaft can be designed, but also another Have type of mechanical transmission, such as a chain drive or a roller chain.
  • Torque transmitted is different Measurement methods or sensors as well.
  • different places of the jacquard weaving machine measurable.
  • the torque can be read through Measure the torsion of the cardan shaft.
  • the measurement of a gearbox is also suitable applied reaction force to determine the Torque.
  • Another option is measurement the torque on the shaft of the jacquard device, immediately at the entrance to the housing of the Jacuzzi equipment.
  • FIG. 1 shows a jacquard weaving machine 20 comprising one Weaving machine 1 with shaft 1a and drive motor 3 and one Jacuzzi device 2 with wave 2a, 2b, 2c.
  • the two Waves la and 2a, 2b, 2c are over one Transmission device 4a, 4b, 5, an angular gear 4a, 4b and a propeller shaft 5, rigid with each other connected so that both the jacquard 2 and also the weaving machine 1 synchronously or approximately synchronously run towards each other.
  • One end region of the shaft 2a, 2b, 2c is connected to the bevel gear 4b.
  • the other The end region of the shaft 2a, 2b, 2c is an auxiliary motor 8 arranged which a torque on the shaft 2a, 2b, 2c causes.
  • the auxiliary motor 8 also has a sensor 7 Detection of the angle of rotation of the shaft 2a, 2b, 2c. Further is between the bevel gear 4b and Jacquard device 2 a sensor 6 for detecting an the shaft 2a, 2b, 2c arranged torque.
  • the sensors 6, 7 are connected via signal lines 6 a, 7 a a control device 9 connected via a Control line 9a is connected to the auxiliary motor 8.
  • Jacquard device 2 and the weaving machine 1 extending Connecting cords 10a, 10b shown the location the warp threads and thereby determine the shedding.
  • the auxiliary motor 8 is thus controlled by the control device 9 controlled that by the propeller shaft 5 too transmitting torque peak values and / or Torque fluctuations are reduced and / or that the Speed fluctuations of the jacquard weaving machine 20 are reduced be and / or that the electrical power consumption the entire jacquard weaving machine 20 is reduced.
  • the between the jacquard device 2 and the weaving machine 1 applied torque is detected by the sensor 6 and the Control device 9 fed.
  • the auxiliary motor 8 will according to a selectable target by the Control device 9 controlled.
  • the target is:
  • the torque measured on the shaft 2b, 2c can be but also elsewhere in the Torque transmission device between the Measure weaving machine 1 and jacquard device 2. So for example, the torsion of the cardan shaft 5 by means of strain gauges and from that the Calculate the applied torque. Another device for measuring the torque is shown in Fig. 3. From the side view of the gear 4a, the shaft 5 can be seen as well as the one-sided, pivoting storage 4c. The gear 4a is also with a Storage sensor 6c with signal line 6d connected. The torque transmitted by the shaft 5 causes reaction forces in the transmission 4a, which over the bearing 4c and the sensor 6c on the base 38 transfer. The reaction craters occurring are thus measurable by the sensor 6c, from which the shaft 5 applied torque is measurable.
  • FIG. 2 Another device for determining the torque transmitted between the weaving machine 1 and the jacquard device 2 is shown in FIG. 2.
  • a rotary angle sensor 7, 7b, 7c is arranged on both sides of the end of the cardan shaft 5, which are connected to the control device 9 via signal lines 6a, 7a.
  • the cardan shaft 5 has an elasticity, which is why an applied torque causes a torsion of the shaft 5, which can be measured with the rotation angle sensors 7b, 7c.
  • sensors 7b, 7c with a sufficiently good angular resolution of, for example, 0.1 degrees are used.
  • the control device 9 can calculate the applied torque from the difference between the two rotation angle sensor signals 6a, 7a.
  • the rotation angle sensor 7b, 7c measures the signal ⁇ -t.
  • Each of the two rotation angle sensors 7b, 7c measures a signal ⁇ 1 ⁇ t or a signal ⁇ 2 ⁇ t, the torque being proportional to the angle difference of the two rotation angle sensor signals, corresponding to ⁇ 1 ⁇ t - ⁇ 2 ⁇ t.
  • speed fluctuations can be measured very well, so that dynamic torque fluctuations can also be measured reliably.
  • the torque itself can also be derived from others Sizes such as measuring the motor 3 Calculate the power consumed.
  • the two angle sensors do not necessarily have to be in the Area of the jacquard device 2 or the weaving machine 1 attached but can be somewhere on rotating Parts of the jacquard loom 20 may be attached, if between the two measuring points Parts such as Gearbox, universal joints or splined shaft have little or no play.
  • a particularly inexpensive arrangement for measuring the Angle of rotation is obtained if one already exists Angle encoders can be used, such as a already built into the engine 8 as standard Angle sensor 7.
  • the auxiliary motor 8 can either be a drive or a Bring braking torque.
  • energy can be in a buffer is transferred and from Auxiliary motor 8 in driving operation back to the memory be removed.
  • this can be a problem have poor efficiency, especially if the Memory can not be filled and the excess energy is to be dissipated as heat loss.
  • the jacquard weaving machine 20 is therefore of the Control device 9 advantageously controlled in such a way that no braking operation is required, or such that at least the braking energy is the storage capacity of the Cache does not exceed.
  • the control device 9 advantageously uses one flexible control strategy and draws as a control variable both the torque, the speed as well as the Power consumption in consideration of the auxiliary motor 8 to control so that none of these three values during excessive values for the operation of the jacquard weaving machine 20 having.
  • Fig. 2 shows an advantageous embodiment by using the drive device 8 a Intermediate storage device 8a via a line 8b connected is.
  • This storage device 8a is in use the braking operation of the auxiliary drive 8 energy supplied and during a power output of the auxiliary drive 8 also that stored in the storage device 8a Energy supplied to the auxiliary drive 8 again.
  • This Energy exchange between auxiliary drive 8 and Storage device 8a can be particularly Speed fluctuations with additional energy savings compensate.
  • This procedure allows the Total power consumption of the jacquard weaving machine 20 to reduce.
  • the cache device 8a is normally part of the drive device 8, the energy exchange automatically in the Drive device 8 expires.
  • the Total power consumption can be further optimized by the energy consumption of the motor 3 from the Control device 9 is monitored via a signal line 8d becomes.
  • This Power measurement can take the place of a torque measurement be used for regulation, especially in a Condition of the weaving machine in which no other Torque value is available, for example at Sensor failure.
  • FIG. 4a shows an angular gear 4a with shafts 30, bearings 32 and gears 31.
  • Such an angular gear is suitable for measuring the wave 30 Torque transmitted when at least one bearing 32 a sensor 33 according to FIG. 4c is arranged.
  • a sensor 33 according to FIG. 4c is arranged.
  • FIG. 4c illustrated side view of a bearing 32 Shaft 30 is connected to a measuring device 33 Pad 35 connected.
  • the measuring device 33 allows the forces F1, F2 acting on the bearing 32 measure from which the transmitted from the shaft 30 Torque can be calculated.
  • 4b shows another Embodiment of a gear 4c with bearing 32, Shaft 30 and gears 31.
  • at least one Bearing with a measuring device 33 according to FIG. 4c be equipped so that the applied to the shaft 30 Torque can be measured.
  • the weaving machine 1 and the jacquard device 2 can be coupled with each other in a variety of ways.
  • the Shaft parts 2a, 2b, 2c not necessarily components be the same wave.
  • the shaft parts 2a, 2b, 2c can for Example also connected to each other by gears his.
  • the motor 8 can also use the jacquard device 2 drive via an intermediate gear.
  • the Motor 8 can in different places on the Intervene jacquard device 2, also on the shaft 2c.
  • the motor 3 can also have clutches and Gear connected to the shaft la of the weaving machine 1 be so that the motor 3 is not directly connected to the main shaft the weaving machine 1 is connected.
  • the drive device 8 can be designed as a so-called servo amplifier be comprising a rectifier, one DC link, a capacitor and one Power stage for driving the motor.
  • the Servo drives usually have a rotation angle sensor.

Description

Die Erfindung betrifft eine Jacquardwebmaschine und ein Verfahren zum Betrieb der Jacquardwebmaschine.The invention relates to a jacquard weaving machine and a Process for operating the jacquard weaving machine.

Bekannte Jacquardwebmaschinen umfasse eine Webmaschine zum Eintrag eines Schussfadens sowie eine Jacquardeinrichtung zur Ansteuerung der Fachbildung der Kettfäden. Die Webmaschine sowie die Jacquardeinrichtung sind üblicherweise, wie in der Druckschrift DE-U-9102560.5 offenbart, über ein Getriebe sowie eine Kardanwelle miteinander verbunden und werden gemeinsam vom Motor der Webmaschine angetrieben. Eine derartige Anordung weist den Nachteil auf, dass ein Motor mit hoher Leistungsabgabe erforderlich ist, insbesondere beim Antrieb einer grossen Jacquardeinrichtung. Weiter weist sowohl die Webmaschine als auch die Jacquardeinrichtung im freien Lauf ein individuelles, in Funktion des Drehwinkels variables Drehmoment auf, was zu einer variablen Winkelgeschwindigkeit führt. Dies wird hervorgerufen durch verschiedene oszillierende, massebehaftete Bauteile. Werden die Webmaschine und die Jacquardeinrichtung über eine Transmissionsvorrichtung, wie zum Beispiel eine Kardanwelle, miteinander zu einer einzigen Jacquardwebmaschine verbunden, so treten hohe Drehmomentschwankungen auf, durch welche der Antrieb, die Getriebe, die Welle als auch die Lager in erheblichem Masse zusätzlich belastet werden. Dies erfordert massiv ausgebildete Antriebsteile, verkürzt deren Lebensdauer und führt zudem zu Energieverlusten.Known jacquard weaving machines include a weaving machine to insert a weft and one Jacquard device to control the formation of the Warp threads. The weaving machine and the jacquard device are usually, as in the document DE-U-9102560.5 disclosed about a gearbox as well as a Cardan shaft connected together and become common driven by the weaving machine motor. Such Arrangement has the disadvantage that an engine with high Performance is required, especially when Drive a large jacquard device. Further points both the weaving machine and the jacquard device in the free run an individual, in function of the Angle of rotation variable torque resulting in a variable angular velocity leads. this will caused by various oscillating, earthed components. Will the weaving machine and the Jacquard device via a transmission device, such as a cardan shaft, together into one single jacquard weaving machine connected, so high Torque fluctuations due to which the drive, the Gears, the shaft as well as the bearings in considerable Additional mass. This requires massive trained drive parts, shortens their service life and also leads to energy losses.

Es ist Aufgabe der vorliegenden Erfindung eine wirtschaftlicher zu betreibende Jacquardwebmaschine vorzuschlagen.It is an object of the present invention more economical to operate jacquard weaving machine to propose.

Diese Aufgabe wird gelöst mit einer Vorrichtung gemäss Anspruch 1. Die Unteransprüche 2 bis 6 beziehen sich auf weitere, vorteilhafte Ausgestaltungen der erfindungsgemässen Vorrichtung. Die Aufgabe wird weiter gelöst mit einem Verfahren zum Betrieb einer Jacquardwebmaschine gemäss Anspruch 7. Die Unteransprüche 8 bis 10 beziehen sich auf weitere, vorteilhafte Betriebsverfahren.This object is achieved with a device according to Claim 1. The sub-claims 2 to 6 relate to further advantageous embodiments of the device according to the invention. The task continues solved with a method of operating a Jacquard weaving machine according to claim 7. The subclaims 8 to 10 refer to further advantageous ones Operating procedures.

Erfindungsgemäss weist die Jacquardwebmaschine einen zusätzlich einwirkenden Hilfsantrieb auf, sowie zumindest einen Sensor zum Erfassen des Drehwinkels und/oder des zwischen der Webmaschine und der Jacquardeinrichtung anliegenden Drehmomentes. Der Hilfsantrieb kann zum Beispiel unmittelbar auf die Jacquardeinrichtung einwirken, oder unmittelbar auf die Webmaschine oder unmittelbar auf die Kardanwelle. Das Sensorsignal wird einer Regelvorrichtung zugeführt, welche den Hilfsantrieb derart ansteuert, dass Drehzahlschwankungen und/oder Drehmomentschwankungen und/oder Drehmomentspitzenwerte von Komponenten der Jacquardwebmaschine reduziert werden. Dabei kann der Hilfsantrieb, üblicherweise als Elektromotor ausgestaltet, sowohl antreibend als auch bremsend auf die Jacquardeinrichtung einwirken. Sowohl die Webmaschine als auch die Jacquardeinrichtung weisen an sich ein in Abhängigkeit des Drehwinkels variables Drehmoment auf, wobei das erforderliche Drehmoment zudem von Betriebsparametern wie Drehzahl, hergestellem Muster oder Gewebeart abhängt. Die Verbindung von Webmaschine und Jacquardeinrichtung, zum Beispiel über eine Kardanwelle, zwingt den beiden Vorrichtungen eine gemeinsame Drehzahl auf. Daher entsteht zwischen dem Drehwinkel und dem Drehmoment einer Jaquardwebmaschine ein sehr komplexer Zusammenhang.
Bezüglich der Drehzahlregelung einer Jaquardwebmaschine sind unter anderem die drei folgenden, prinzipiell unterschiedlichen Zustände zu berücksichtigen. Streben die Webmaschine und die Jacquardeinrichtung eine gegenläufige Bewegung an, was heisst, dass die eine Vorrichtung ein in Funktion des Drehwinkels zunehmendes Drehmoment und die andere Vorrichtung ein in Funktion des Drehwinkels abnehmendes Drehmoment erfordert, so bewirkt dieser Zustand ein hohes Drehmoment in der die Jacquardeinrichtung mit der Webmaschine mechanisch verbindende Kuppelungsvorrichtung, beispielsweise in einer Kardanwelle oder in einem Getriebe. In diesem Betriebszustand wirkt der Hilfsmotor derart auf die Jacquardeinrichtung, dass das Drehmoment in der Kuppelungsvorrichtung, z.B. der Kardanwelle reduziert wird. In einem zweiten Betriebszustand streben sowohl die Webmaschine als auch die Jacquardeinrichtung eine mitläufige Bewegung an, wobei beide Vorrichtungen ein in Funktion des Drehwinkels abnehmendes Drehmoment erfordern, was eine temporäre Erhöhung der Winkelgeschwindigkeit der Jacquardwebmaschine bewirkt. In diesem Betriebszustand wirkt der Hilfsmotor bremsend auf die Jacquardeinrichtung, was sich auf die Drehzahlschwankung stabilisierend auswirkt.
In einem dritten Betriebszustand streben beide Vorrichtungen eine mitläufige Bewegung an, wobei beide Vorrichtungen ein in Funktion des Drehwinkels zunehmendes Drehmoment erfordern, was eine temporäre Reduktion der Winkelgeschwindigkeit der Jacquardwebmaschine bewirkt. In diesem Betriebszustand wirkt der Hilfsmotor antreibend auf die Jacquardeinrichtung, was sich auf die Drehzahlschwankungen ebenfalls stabilisierend auswirkt.According to the invention, the jacquard weaving machine has an additionally acting auxiliary drive, and at least one sensor for detecting the angle of rotation and / or the torque applied between the weaving machine and the jacquard device. The auxiliary drive can, for example, act directly on the jacquard device, or directly on the weaving machine or directly on the cardan shaft. The sensor signal is fed to a control device which controls the auxiliary drive in such a way that speed fluctuations and / or torque fluctuations and / or torque peak values of components of the jacquard weaving machine are reduced. The auxiliary drive, usually designed as an electric motor, can act both as a driver and as a brake on the jacquard device. Both the weaving machine and the jacquard device have a torque which is variable as a function of the angle of rotation, the torque additionally depending on operating parameters such as speed, the pattern produced or the type of fabric. The connection of the weaving machine and the jacquard device, for example via a cardan shaft, forces the two devices to have a common speed. This creates a very complex relationship between the angle of rotation and the torque of a jacquard weaving machine.
With regard to the speed control of a jacquard weaving machine, the three following, fundamentally different states must be taken into account. If the weaving machine and the jacquard device aim to move in opposite directions, which means that one device requires a torque increasing as a function of the angle of rotation and the other device requires a torque decreasing as a function of the angle of rotation, this state brings about a high torque in the jacquard device the weaving machine mechanically connecting coupling device, for example in a cardan shaft or in a transmission. In this operating state, the auxiliary motor acts on the jacquard device in such a way that the torque in the coupling device, for example the cardan shaft, is reduced. In a second operating state, both the weaving machine and the jacquard device strive for a synchronous movement, both devices requiring a torque that decreases as a function of the angle of rotation, which causes a temporary increase in the angular velocity of the jacquard weaving machine. In this operating state, the auxiliary motor has a braking effect on the jacquard device, which has a stabilizing effect on the speed fluctuation.
In a third operating state, both devices strive for a concurrent movement, both devices requiring a torque that increases as a function of the angle of rotation, which causes a temporary reduction in the angular velocity of the jacquard weaving machine. In this operating state, the auxiliary motor drives the jacquard device, which also has a stabilizing effect on the speed fluctuations.

Ein Vorteil der Erfindung ist somit darin zu sehen, dass sich Drehzahlschwankungen verringern lassen und/oder dass sich Drehmomentspitzenwerte in der zwischen der Jacquardeinrichtung und der Webmaschine angeordneten Drehmomentübertragungsvorrichtung reduzieren lassen. Ein weitere Vorteil ist darin zu sehen, dass sowohl die Webmaschine als auch die Jacquardeinrichtung selbst bei grossen Drehzahlschwankungen synchron zueinander laufen, wobei der Hilfsantrieb die Drehzahlschwankungen und/oder die Drehmomentschwankungen reduziert. Ein weiterer Vorteil der Erfindung ist darin zu sehen, dass für die Jacquardwebmaschine eine Webmaschine in Standardbauform einsetzbar ist, die insbesondere zum Antrieb einen Standardmotor aufweist, da durch die erfindungsgemässe Vorrichtung sowie das entsprechende Regelverfahren Spitzenleistungen entweder nicht mehr erforderlich sind, oder diese zumindest teilweise vom Hilfsantrieb aufgebracht werden, sodass zum Antrieb der Webmaschine ein Standardmotor genügt. Ein weitere Vorteil ist darin zu sehen, dass eine Jacquardwebmaschine, welche die erfindungsgemässe Vorrichtung aufweist, gegenüber bisher bekannten Ausführungsformen mit einer höheren Drehzahl betreibbar ist, sodass mehr Gewebe pro Zeiteinheit herstellbar ist.An advantage of the invention can thus be seen in the fact that speed fluctuations can be reduced and / or that torque peaks in the between the Jacquard device and the loom arranged Have the torque transmission device reduced. On Another advantage is that both the Weaving machine as well as the jacquard device itself large speed fluctuations run synchronously with each other, the auxiliary drive the speed fluctuations and / or the torque fluctuations are reduced. Another Advantage of the invention is the fact that for Jacquard loom a standard design loom can be used, in particular to drive one Standard motor has, as by the inventive Device and the corresponding control procedure Excellence is no longer required either or at least partially from the auxiliary drive be applied so that to drive the loom a standard motor is sufficient. Another advantage is in it to see a jacquard weaving which the Has device according to the invention, compared to previously known embodiments with a higher speed is operable, so that more tissue per unit of time can be produced.

Die mechanische Koppelungsvorrichtung zur Drehmomentübertragung zwischen der Webmaschine und der Jacquardeinrichtung kann zum Beispiel als eine Kardanwelle ausgestaltet sein, jedoch auch eine andere Art mechanischer Transmission aufweisen, wie zum Beispiel ein Kettentrieb oder eine Rollenkette. The mechanical coupling device for Torque transmission between the loom and the Jacquard device can, for example, as one Cardan shaft can be designed, but also another Have type of mechanical transmission, such as a chain drive or a roller chain.

Das zwischen der Webmaschine und der Jacquardeinrichtung übertragene Drehmoment ist mit unterschiedlichen Messmethoden beziehungsweise Messensoren sowie an. unterschiedlichen Stellen der Jacquardwebmaschine messbar. So lässt sich das Drehmoment zum Beispiel durch Messen der Torsion der Kardanwelle bestimmen. Weiter eignet sich auch die Messung der an einem Getriebe anliegenden Reaktionskraft zur Ermittlung des Drehmomentes. Eine weitere Möglichkeit ist die Messung des Drehmomentes an der Welle der Jacquardeinrichtung, unmittelbar an deren Eingang ins Gehäuse der Jacquareinrichtung.That between the weaving machine and the jacquard device Torque transmitted is different Measurement methods or sensors as well. different places of the jacquard weaving machine measurable. For example, the torque can be read through Measure the torsion of the cardan shaft. Further the measurement of a gearbox is also suitable applied reaction force to determine the Torque. Another option is measurement the torque on the shaft of the jacquard device, immediately at the entrance to the housing of the Jacuzzi equipment.

Die Erfindung wird mit mehreren Ausführungsbeispielen beschrieben. Es zeigt:

Fig. 1
Eine schematische Anordnung einer Jacquardwebmaschine;
Fig. 2
eine weitere schematische Anordnung einer Jacquardwebmaschine;
Fig. 3
eine Seitenansicht eines Getriebes;
Fig. 4a, 4b
Ausführungsformen von Getrieben und
Fig. 4c
eine Drehmomentmessvorrichtung für Getriebe.
The invention is described with several exemplary embodiments. It shows:
Fig. 1
A schematic arrangement of a jacquard weaving machine;
Fig. 2
a further schematic arrangement of a jacquard weaving machine;
Fig. 3
a side view of a transmission;
4a, 4b
Embodiments of gears and
Fig. 4c
a torque measuring device for transmissions.

Fig. 1 zeigt eine Jacquardwebmaschine 20 umfassend eine Webmaschine 1 mit Welle 1a und Antriebsmotor 3 sowie eine Jacquareinrichtung 2 mit Welle 2a,2b,2c. Die beiden Wellen la und 2a,2b,2c sind über eine Transmissionsvorrichtung 4a,4b,5, ein Winkelgetriebe 4a,4b sowie eine Kardanwelle 5, starr miteinander verbunden, sodass sowohl die Jacquardeinrichtung 2 als auch die Webmaschine 1 synchron oder annähernd synchron zueinander laufen. Der eine Endbereich der Welle 2a,2b,2c ist mit dem Winkelgetriebe 4b verbunden. Am andere Endbereich der Welle 2a,2b,2c ist ein Hilfsmotor 8 angeordnet welcher ein Drehmoment auf die Welle 2a,2b,2c bewirkt. Zudem weist der Hilfsmotor 8 einen Sensor 7 zur Erfassung des Drehwinkels der Welle 2a,2b,2c auf. Weiter ist zwischen dem Winkelgetriebe 4b und der Jacquardeinrichtung 2 ein Sensor 6 zum Erfassen eines an der Welle 2a,2b,2c anliegenden Drehmomentes angeordnet. Die Sensoren 6,7 sind über Signalleitungen 6a,7a mit einer Regelvorrichtung 9 verbunden, welche über eine Ansteuerleitung 9a mit dem Hilfsmotor 8 verbunden ist. Weiter sind andeutungsweise die zwischen der Jacquardeinrichtung 2 und der Webmaschine 1 verlaufenden Verbindungsschnüre 10a,10b dargestellt, welche die Lage der Kettfäden und dadurch die Fachbildung bestimmen.1 shows a jacquard weaving machine 20 comprising one Weaving machine 1 with shaft 1a and drive motor 3 and one Jacuzzi device 2 with wave 2a, 2b, 2c. The two Waves la and 2a, 2b, 2c are over one Transmission device 4a, 4b, 5, an angular gear 4a, 4b and a propeller shaft 5, rigid with each other connected so that both the jacquard 2 and also the weaving machine 1 synchronously or approximately synchronously run towards each other. One end region of the shaft 2a, 2b, 2c is connected to the bevel gear 4b. The other The end region of the shaft 2a, 2b, 2c is an auxiliary motor 8 arranged which a torque on the shaft 2a, 2b, 2c causes. The auxiliary motor 8 also has a sensor 7 Detection of the angle of rotation of the shaft 2a, 2b, 2c. Further is between the bevel gear 4b and Jacquard device 2 a sensor 6 for detecting an the shaft 2a, 2b, 2c arranged torque. The sensors 6, 7 are connected via signal lines 6 a, 7 a a control device 9 connected via a Control line 9a is connected to the auxiliary motor 8. There are also hints between the Jacquard device 2 and the weaving machine 1 extending Connecting cords 10a, 10b shown the location the warp threads and thereby determine the shedding.

Der Hilfsmotor 8 wird derart von der Regelvorrichtung 9 angesteuert, dass die von der Kardanwelle 5 zu übertragenden Drehmomentspitzenwerte und/oder Drehmomentschwankungen reduziert werden und/oder dass die Drehzahlschwankungen der Jacquardwebmaschine 20 reduziert werden und/oder dass die elektrische Leistungsaufnahme der gesamten Jacquardwebmaschine 20 reduziert wird. Das zwischen der Jacquardeinrichtung 2 und der Webmaschine 1 anliegende Drehmoment wird vom Sensor 6 erfasst und der Regelvorrichtung 9 zugeleitet. Der Hilfsmotor 8 wird entsprechend einer wählbaren Zielvorgabe durch die Regelvorrichtung 9 angesteuert.The auxiliary motor 8 is thus controlled by the control device 9 controlled that by the propeller shaft 5 too transmitting torque peak values and / or Torque fluctuations are reduced and / or that the Speed fluctuations of the jacquard weaving machine 20 are reduced be and / or that the electrical power consumption the entire jacquard weaving machine 20 is reduced. The between the jacquard device 2 and the weaving machine 1 applied torque is detected by the sensor 6 and the Control device 9 fed. The auxiliary motor 8 will according to a selectable target by the Control device 9 controlled.

Als Zielvorgabe eignet sich:The target is:

a) Drehmomentregelunga) Torque control

Der Hilfsmotor 8 wird derart angesteuert, dass das in der Welle 8 übertragene Drehmoment beeinflusst wird. Dabei eignen sich unterschiedliche Regelstrategien wie:

  • Begrenzung des positiven oder negativen Drehmomentes auf einen zulässigen Maximalwert
  • Reduktion des Drehmomentes um einen konstanten Faktor oder entsprechend einer vorgebbaren, mathematischen Gesetzmässigkeit
  • Begrenzung oder Reduktion der Drehmomentveränderung in Funktion der Zeit
  • Sowohl eine Begrenzung des maximal anliegenden Drehmomentes als auch zugleich eine Reduktion des Drehmomentes
  • Begrenzung des Drehomentes auf einen minimalen, gegen Null strebenden Wert.
The auxiliary motor 8 is controlled in such a way that the torque transmitted in the shaft 8 is influenced. Different control strategies are suitable such as:
  • Limitation of the positive or negative torque to a permissible maximum value
  • Reduction of the torque by a constant factor or according to a predeterminable, mathematical law
  • Limitation or reduction of the torque change as a function of time
  • Both a limitation of the maximum torque applied and at the same time a reduction in the torque
  • Limitation of the torque to a minimum, towards zero value.

Im Ausführungsbeispiel gemäss Fig. 1 wird das Drehmoment an der Welle 2b,2c gemessen. Das Drehmoment lässt sich jedoch auch an anderen Stelle der Drehmomentübertragungsvorrichtung zwischen der Webmaschine 1 und der Jacquareinrichtung 2 messen. So lässt sich zum Beispiel die Torsion der Kardanwelle 5 mittels Dehnmessstreifen erfassen und daraus das anliegende Drehmoment berechnen. Eine weitere Vorrichtung zur Messung des Drehmomentes ist in Fig. 3 dargestellt. Aus der Seitenansicht des Getriebes 4a ist die Welle 5 ersichtlich sowie die einseitige, schwenkbare Lagerung 4c. Das Getriebe 4a ist weiter mit einem auch zur Lagerung dienenden Sensor 6c mit Signalleitung 6d verbunden. Das von der Welle 5 übertragene Drehmoment bewirkt im Getriebe 4a Reaktionskräfte, welche sich über die Lagerung 4c sowie den Sensor 6c auf die Unterlage 38 übertragen. Die auftretenden Reaktionskräte sind somit durch den Sensor 6c messbar, woraus das an der Welle 5 anliegende Drehmoment messbar ist.In the exemplary embodiment according to FIG. 1, the torque measured on the shaft 2b, 2c. The torque can be but also elsewhere in the Torque transmission device between the Measure weaving machine 1 and jacquard device 2. So For example, the torsion of the cardan shaft 5 by means of strain gauges and from that the Calculate the applied torque. Another device for measuring the torque is shown in Fig. 3. From the side view of the gear 4a, the shaft 5 can be seen as well as the one-sided, pivoting storage 4c. The gear 4a is also with a Storage sensor 6c with signal line 6d connected. The torque transmitted by the shaft 5 causes reaction forces in the transmission 4a, which over the bearing 4c and the sensor 6c on the base 38 transfer. The reaction craters occurring are thus measurable by the sensor 6c, from which the shaft 5 applied torque is measurable.

Eine weitere Vorrichtung zur Bestimmung des zwischen der Webmaschine 1 und der Jacquardvorrichtung 2 übertragenen Drehmomentes ist in Fig. 2 dargestellt. Dabei ist an der Kardanwelle 5 beidseitig an deren Endbereich jeweils ein Drehwinkelsensor 7,7b,7c angeordnet, welche über Signalleitungen 6a,7a mit der Regelvorrichtung 9 verbunden sind. Die Kardanwelle 5 weist eine Elastizität auf, weshalb ein anliegendes Drehmoment eine Torsion der Welle 5 bewirkt, welche mit den Drehwinkelsensoren 7b,7c messbar ist. Dazu werden Sensoren 7b,7c mit einer genügen guten Winkelauflösung von zum Beispiel 0.1 Grad verwendet. Aus der Differenz der beiden Drehwinkelsenorensignalen 6a,7a kann die Regelvorrichtung 9 das anliegende Drehmoment berechnen. Wird die Drehzahl der Welle 5 mit ω und die Zeit mit t bezeichnet, so misst der Drehwinkelsensor 7b,7c das Signal ω-t. Jeder der beiden Drehwinkelsensoren 7b,7c misst ein Signal ω1·t beziehungsweise ein Signal ω2·t, wobei das Drehmoment proportional zur Winkeldifferenz der beiden Drehwinkelsensorsignalen, entsprechend ω1·t - ω2·t ist. Mit diesem Differenzsignal lassen sich Drehzahlschwankungen sehr gut messen, sodass auch dynamische Drehmomentschwankungen zuverlässig messbar sind.Another device for determining the torque transmitted between the weaving machine 1 and the jacquard device 2 is shown in FIG. 2. In this case, a rotary angle sensor 7, 7b, 7c is arranged on both sides of the end of the cardan shaft 5, which are connected to the control device 9 via signal lines 6a, 7a. The cardan shaft 5 has an elasticity, which is why an applied torque causes a torsion of the shaft 5, which can be measured with the rotation angle sensors 7b, 7c. For this purpose, sensors 7b, 7c with a sufficiently good angular resolution of, for example, 0.1 degrees are used. The control device 9 can calculate the applied torque from the difference between the two rotation angle sensor signals 6a, 7a. If the rotational speed of the shaft 5 is denoted by ω and the time is denoted by t, the rotation angle sensor 7b, 7c measures the signal ω-t. Each of the two rotation angle sensors 7b, 7c measures a signal ω 1 · t or a signal ω 2 · t, the torque being proportional to the angle difference of the two rotation angle sensor signals, corresponding to ω 1 · t - ω 2 · t. With this difference signal, speed fluctuations can be measured very well, so that dynamic torque fluctuations can also be measured reliably.

Das Drehmoment an sich lässt sich auch aus anderen Grössen wie zum Beispiel über die Messung der vom Motor 3 aufgenommenen Leistung berechnen.The torque itself can also be derived from others Sizes such as measuring the motor 3 Calculate the power consumed.

Die beiden Winkelsensoren müssen nicht unbedingt im Bereich der Jacquardvorrichtung 2 oder der Webmaschine 1 angebracht sein sondern können irgendwo an rotierenden Teilen der Jacquardwebmaschine 20 angebracht sein, sofern sich die zwischen den beiden Messstellen befindlichen Teile wie z.B. Getriebe, Kardangelenke oder Keilwelle kein oder nur ein geringes Spiel aufweisen. Eine besonders kostengünstige Anordnung zur Messung der Drehwinkel erhält man, wenn bereits vorhandene Winkelgeber verwendet werden, wie zum Beispiel ein bereits standardmässig im Motor 8 eingebauter Winkelsensor 7.The two angle sensors do not necessarily have to be in the Area of the jacquard device 2 or the weaving machine 1 attached but can be somewhere on rotating Parts of the jacquard loom 20 may be attached, if between the two measuring points Parts such as Gearbox, universal joints or splined shaft have little or no play. A particularly inexpensive arrangement for measuring the Angle of rotation is obtained if one already exists Angle encoders can be used, such as a already built into the engine 8 as standard Angle sensor 7.

Als weitere Zielvorgabe für die Regelvorrichtung 9 eignet sich eineSuitable as a further target for the control device 9 yourself one

b) Drehzahlregelungb) speed control

Die Drehzahl der Jaquardwebmaschine lässt sich an irgend einer geeigneten Stelle messen, so zum Beispiel, wie in Fig. 1 dargestellt, direkt am Hilfsmotor 8 mit einem Drehzahlgeber 7, oder wie in Fig. 2 dargestellt, durch die Messung der Drehzahl der Kardanwelle 5. Die Regelvorrichtung 9 steuert den Hilfsmotor 8 derart, dass Drehzahlschwankungen reduziert werden, durch

  • Begrenzung der Drehzahl auf einen zulässigen Maximalwert
  • Begrenzung der Spitzenwerte der Drehzahlveränderung
  • Reduktion der Drehzahlschwankungen auf einen gegen Null strebenden Wert
The speed of the jacquard loom can be measured at any suitable point, for example, as shown in FIG. 1, directly on the auxiliary motor 8 with a speed sensor 7, or as shown in FIG. 2, by measuring the speed of the propeller shaft 5. The control device 9 controls the auxiliary motor 8 in such a way that speed fluctuations are reduced
  • Limiting the speed to a permissible maximum value
  • Limitation of the peak values of the speed change
  • Reduction of the speed fluctuations to a value striving towards zero

Als weitere Zielvorgabe für die Regelvorrichtung 9 eignet sich eineSuitable as a further target for the control device 9 yourself one

c) Leistungsoptimierungc) Performance optimization

Der Hilfsmotor 8 kann entweder ein Antriebs- oder ein Bremsmoment erbringen. Im Bremsbetrieb kann Energie in einen Zwischenspeicher übertragen werden und vom Hilfsmotor 8 im antreibenden Betrieb wieder dem Speicher entnommen werden. Dieser Vorgang kann jedoch einen schlechten Wirkungsgrad aufweisen, insbesondere wenn der Speicher nicht weiter gefüllt werden kann und die überschüssige Energie als Verlustwärme abzuführen ist. The auxiliary motor 8 can either be a drive or a Bring braking torque. When braking, energy can be in a buffer is transferred and from Auxiliary motor 8 in driving operation back to the memory be removed. However, this can be a problem have poor efficiency, especially if the Memory can not be filled and the excess energy is to be dissipated as heat loss.

Die Jacquardwebmaschine 20 wird daher von der Regelvorricht 9 vorteilhafterweise derart angesteuert, dass kein Bremsbetrieb erforderlich ist, oder derart, dass zumindest die Bremsenergie die Speicherkapazität des Zwischenspeichers nicht übersteigt.The jacquard weaving machine 20 is therefore of the Control device 9 advantageously controlled in such a way that no braking operation is required, or such that at least the braking energy is the storage capacity of the Cache does not exceed.

Die Regelvorrichtung 9 regelt die Jacquardwebmaschine 20 derart, dass entweder

  • a) eine Drehmomentregelung
  • b) eine Drehzahlregelung
  • c) eine Leistungsoptimierung
    • oder eine Kombination dieser drei Regelstrategien durchgeführt wird.The control device 9 controls the jacquard weaving machine 20 in such a way that either
  • a) a torque control
  • b) a speed control
  • c) performance optimization
    • or a combination of these three control strategies is carried out.

    Vorteilhafterweise verwendet die Regelvorrichtung 9 eine flexible Regelstrategie und zieht als Regelgrösse sowohl das Drehmoment, wie die Drehzahl als auch den Leistungsverbrauch in Betracht um den Hilfsmotor 8 anzusteuern, sodass keiner der dieser drei Werte während dem Betrieb der Jacquardwebmaschine 20 übermässige Werte aufweist.The control device 9 advantageously uses one flexible control strategy and draws as a control variable both the torque, the speed as well as the Power consumption in consideration of the auxiliary motor 8 to control so that none of these three values during excessive values for the operation of the jacquard weaving machine 20 having.

    Die drei Regelgrössen sind zum Beispiel derart verknüpfbar, dass

    • wenn sich das Drehmoment in Funktion des Drehwinkels sowohl der Webmaschine 1 als auch der Jacquardeinrichtung 2 gleichsinnig ändert, dies ein kleines Drehmoment in der Kardanwelle 5 zur Folge hat, sodass in diesem Fall die Drehzahl der Jacquardwebmaschine geregelt wird.
    • wenn sich das Drehmoment in Funktion des Drehwinkels der Webmaschine 1 und der Jacquardeinrichtung 2 gegenläufig ändert, dies ein grosses Drehmoment in der Kardanwelle 5 zur Folge hat, sodass in diesem Fall das Drehmoment geregelt wird, indem der Hilfsmotor 8 ein derartiges Drehmoment auf die Jacquardeinrichtung 2 bewirkt, dass die Kardanwelle 5 entlastet wird, um die Kardanwelle 5 zum Beispiel vor einer Zerstörung zu schützen.
    • wenn die Drehzahl unter einem vorgebbaren Wert liegt der Hilfsantrieb 8 im antreibenden Sinne betätigt wird, um die Jacquardwebmaschine 20 zu beschleunigen, und wenn die Drehzahl über einem vorgebbaren Wert liegt den Hilfsantrieb 8 nicht zu betätigen, um dadurch eine Drehzahl über dem vorgebbaren Wert zuzulassen, dafür den Hilfsantrieb 8 möglichst wenig im Bremsbetriebs zu betreiben, was einen vorteilhaften Gesamtwirkungsgrad bewirkt.
    For example, the three control variables can be linked in such a way that
    • If the torque changes in the same direction as a function of the angle of rotation of both the weaving machine 1 and the jacquard device 2, this results in a small torque in the cardan shaft 5, so that in this case the speed of the jacquard weaving machine is regulated.
    • If the torque changes in the opposite direction as a function of the angle of rotation of the weaving machine 1 and the jacquard device 2, this results in a large torque in the cardan shaft 5, so that in this case the torque is regulated by the auxiliary motor 8 applying such a torque to the jacquard device 2 causes the cardan shaft 5 to be relieved, for example to protect the cardan shaft 5 from destruction.
    • if the rotational speed is below a predeterminable value, the auxiliary drive 8 is actuated in a driving sense to accelerate the jacquard weaving machine 20, and if the rotational speed is above a predefinable value, the auxiliary drive 8 is not actuated, in order thereby to permit a rotational speed above the predeterminable value, to operate the auxiliary drive 8 as little as possible in braking operation, which brings about an advantageous overall efficiency.

    Fig. 2 zeigt eine vorteilhafte Ausgestaltung indem mit der Antriebsvorrichtung 8 eine Zwischenspeichervorrichtung 8a über eine Leitung 8b verbunden ist. Diese Speichervorrichtung 8a wird während dem Bremsbetrieb des Hilfsantriebes 8 Energie zugeführt und während einer Leistungsabgabe des Hilfsantriebes 8 auch die in der Speichervorrichtung 8a gespeicherte Energie dem Hilfsantrieb 8 wieder zugeführt. Durch diesen Energieaustausch zwischen Hilfsantrieb 8 und Speichervorrichtung 8a lassen sich insbesonderere Drehzahlschwankungen unter zusätzlicher Energieeinsparung kompensieren. Durch dieses Verfahren lässt sich der Gesamtleistungsverbrauch der Jacquardwebmaschine 20 reduzieren. Die Zwischenspeichervorrichtung 8a ist normalerweise ein Bestandteil der Antriebsvorrichtung 8, wobei der Energieaustausch selbsttätig in der Antriebsvorrichtung 8 abläuft. Der Gesamtleistungsverbrauch lässt sich weiter optimieren, indem der Energieverbrauch des Motors 3 von der Regelvorrichtung 9 über eine Signalleitung 8d überwacht wird. Es kann sich als vorteilhaft erweisen über die Signalleitung 8d die aktuelle elektrische Leistung des Motors 3 zur Regelvorrichtung 9 zu übermitteln. Diese Leistungsmessung kann an Stelle einer Drehmomentmessung zur Regelung verwendet werden, insbesondere in einem Zustand der Webmaschine, bei dem kein anderer Drehmomentwert zur Verfügung steht, zum Beispiel beim Ausfall eines Sensors.Fig. 2 shows an advantageous embodiment by using the drive device 8 a Intermediate storage device 8a via a line 8b connected is. This storage device 8a is in use the braking operation of the auxiliary drive 8 energy supplied and during a power output of the auxiliary drive 8 also that stored in the storage device 8a Energy supplied to the auxiliary drive 8 again. Through this Energy exchange between auxiliary drive 8 and Storage device 8a can be particularly Speed fluctuations with additional energy savings compensate. This procedure allows the Total power consumption of the jacquard weaving machine 20 to reduce. The cache device 8a is normally part of the drive device 8, the energy exchange automatically in the Drive device 8 expires. The Total power consumption can be further optimized by the energy consumption of the motor 3 from the Control device 9 is monitored via a signal line 8d becomes. It can prove beneficial over the Signal line 8d the current electrical power of the Motor 3 to transmit control device 9. This Power measurement can take the place of a torque measurement be used for regulation, especially in a Condition of the weaving machine in which no other Torque value is available, for example at Sensor failure.

    Fig. 4a zeigt ein Winkelgetriebe 4a mit Wellen 30, Lagern 32 sowie Zahnrädern 31. Ein derartiges Winkelgetriebe eignet sich zur Messung der über die Wellen 30 übertragenen Drehmomentes wenn an zumindest einem Lager 32 ein Sensor 33 gemäss Fig. 4c angeordnet ist. Die in Fig. 4c dargestelle Seitenansicht eines Lagers 32 mit Welle 30 ist über eine Messvorrichtung 33 mit einer Unterlage 35 verbunden. Die Messvorrichtung 33 erlaubt die auf das Lager 32 einwirkenden Kräfte F1, F2 zu messen, woraus das von der Welle 30 übertragene Drehmoment berechenbar ist. Fig. 4b zeigt ein weiteres Ausführungsbeispiel eines Getriebes 4c mit Lager 32, Welle 30 sowie Zahnräder 31. Auch hier kann zumindest ein Lager mit einer Messvorrichtung 33 gemäss Fig. 4c ausgestattet sein, sodass das an der Welle 30 anliegende Drehmoment gemessen werden kann.4a shows an angular gear 4a with shafts 30, bearings 32 and gears 31. Such an angular gear is suitable for measuring the wave 30 Torque transmitted when at least one bearing 32 a sensor 33 according to FIG. 4c is arranged. In the Fig. 4c illustrated side view of a bearing 32 Shaft 30 is connected to a measuring device 33 Pad 35 connected. The measuring device 33 allows the forces F1, F2 acting on the bearing 32 measure from which the transmitted from the shaft 30 Torque can be calculated. 4b shows another Embodiment of a gear 4c with bearing 32, Shaft 30 and gears 31. Here, too, at least one Bearing with a measuring device 33 according to FIG. 4c be equipped so that the applied to the shaft 30 Torque can be measured.

    Die Webmaschine 1 sowie die Jacquardeinrichtung 2 können auf unterschiedlichste Weise miteinander gekoppelt sein. Beim Ausführungsbeispiel gemäss Fig. 1 müssen die Wellenteile 2a,2b,2c nicht unbedingt Bestandteile derselben Welle sein. Die Wellenteile 2a,2b,2c können zum Beispiel auch durch Getriebe untereinander verbunden sein. Ebenfalls kann der Motor 8 die Jacquardeinrichtung 2 über ein zwischengeschaltetes Getriebe antreiben. Der Motor 8 kann an unterschiedlichen Stellen auf die Jacquardeinrichtung 2 eingreifen, so auch an der Welle 2c. Weiter kann der Motor 3 auch über Kupplungen und Getriebe mit der Welle la der Webmaschine 1 verbunden sein, sodass der Motor 3 nicht direkt mit der Hauptwelle der Webmaschine 1 verbunden ist. Die Antriebsvorrichtung 8 kann als ein sogenannter Servoverstärker ausgestaltet sein umfassend einen Gleichrichter, einen Gleichstromzwischenkreis, einen Kondensator sowie eine Endstufe zum Antrieb des Motors. Zusätzlich weist der Servoverstärker üblicherweise ein Drehwinkelsensor auf.The weaving machine 1 and the jacquard device 2 can be coupled with each other in a variety of ways. In the embodiment shown in FIG. 1, the Shaft parts 2a, 2b, 2c not necessarily components be the same wave. The shaft parts 2a, 2b, 2c can for Example also connected to each other by gears his. The motor 8 can also use the jacquard device 2 drive via an intermediate gear. The Motor 8 can in different places on the Intervene jacquard device 2, also on the shaft 2c. Furthermore, the motor 3 can also have clutches and Gear connected to the shaft la of the weaving machine 1 be so that the motor 3 is not directly connected to the main shaft the weaving machine 1 is connected. The drive device 8 can be designed as a so-called servo amplifier be comprising a rectifier, one DC link, a capacitor and one Power stage for driving the motor. In addition, the Servo drives usually have a rotation angle sensor.

    Claims (10)

    1. Jacquard weaving machine (20) comprising a weaving machine (1) as well as a Jacquard apparatus (2), which are both connected to one another via a mechanical transmission device (4a, 4b, 5) and are driven by a common motor (3), wherein an additional drive device (8) is provided which acts at least on the Jacquard apparatus (2), characterised in that at least one sensor (7) is provided for the detection of an angle of rotation and/or one sensor (6) is provided for the detection of a torque present between the weaving machine (1) and the Jacquard apparatus (2), and in that the sensor (6, 7) is connected to a control device (9) which controls the drive device (8) in such a manner that fluctuations in the torque and/or fluctuations in the speed of rotation are reduced.
    2. Jacquard weaving machine in accordance with claim 1 characterised in that the sensor (6) for the detection of the torque is provided at the mechanical transmission device (4a, 4b, 5).
    3. Jacquard weaving machine in accordance with claim 1 or claim 2 characterised in that a sensor (7) is provided for the detection of the rotation angle of the Jacquard apparatus (2).
    4. Jacquard weaving machine in accordance with one of the claims 1 to 3, characterised in that a sensor (7) is provided for the detection of the angle of rotation of the weaving machine (1) and a further sensor (7) is provided for the detection of the angle of rotation of the Jacquard apparatus (2).
    5. Jacquard weaving machine in accordance with one of the claims 1 to 4 characterised in that the mechanical transmission device (4a, 4b, 5) is executed as a shaft (5) with transmissions (4a, 4b).
    6. Jacquard weaving machine in accordance with one of the claims 1 to 5 characterised in that an intermediate storage (8a) is connected to the drive device (8) in order to take up energy from the drive device (8) and to give it back to the latter.
    7. Method for the control of a Jacquard weaving machine (20) comprising a weaving machine (1) as well as a Jacquard apparatus (2) which are both connected to one another via a mechanical transmission device (4a, 4b, 5) and are driven by a common motor (3), characterised in that the angle of rotation and/or the torque arising between the weaving machine (1) and the Jacquard apparatus (2) is detected by a control device (9), and with a drive device (8) acting at least on the Jacquard apparatus (2) is controlled with the help of these values in such a manner that torque fluctuations and/or peak torque values and/or fluctuations in the speed of rotation are reduced.
    8. Method in accordance with claim 7 characterised in that the power consumption of the drive device (8) and/or of the common motor (3) is detected by the control device (9) and the drive device (8) is controlled in such a manner that the total power consumption of the two drive devices (3, 8) is minimised.
    9. Method in accordance with one of the claims 7 or 8 characterised in that the drive device (8) is operated either to produce a driving effect and/or a braking effect.
    10. Method in accordance with one of the claims 8 or 9 characterised in that energy is exchanged between the drive device (8) and an intermediate storage (8a).
    EP96810214A 1996-04-04 1996-04-04 Jacquard loom and method of operating said loom Expired - Lifetime EP0799920B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    EP96810214A EP0799920B1 (en) 1996-04-04 1996-04-04 Jacquard loom and method of operating said loom
    DE59607360T DE59607360D1 (en) 1996-04-04 1996-04-04 Jacquard weaving machine and method for operating the same
    JP9016612A JPH09273048A (en) 1996-04-04 1997-01-30 Jacquard loom and control of the jacquard loom
    US08/791,923 US5755267A (en) 1996-04-04 1997-01-31 Weaving machine operation by control of torque and rotation angle of a mechanical transmission

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP96810214A EP0799920B1 (en) 1996-04-04 1996-04-04 Jacquard loom and method of operating said loom

    Publications (2)

    Publication Number Publication Date
    EP0799920A1 EP0799920A1 (en) 1997-10-08
    EP0799920B1 true EP0799920B1 (en) 2001-07-25

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    US (1) US5755267A (en)
    EP (1) EP0799920B1 (en)
    JP (1) JPH09273048A (en)
    DE (1) DE59607360D1 (en)

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    Also Published As

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    US5755267A (en) 1998-05-26
    JPH09273048A (en) 1997-10-21
    DE59607360D1 (en) 2001-08-30
    EP0799920A1 (en) 1997-10-08

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