WO2005010257A1 - Dispositif d'entrainement generant un mouvement de va-et-vient d'un composant entraine, en particulier dans une machine a tisser - Google Patents

Dispositif d'entrainement generant un mouvement de va-et-vient d'un composant entraine, en particulier dans une machine a tisser Download PDF

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Publication number
WO2005010257A1
WO2005010257A1 PCT/DE2004/000902 DE2004000902W WO2005010257A1 WO 2005010257 A1 WO2005010257 A1 WO 2005010257A1 DE 2004000902 W DE2004000902 W DE 2004000902W WO 2005010257 A1 WO2005010257 A1 WO 2005010257A1
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WO
WIPO (PCT)
Prior art keywords
drive device
drive
control device
energy storage
movement
Prior art date
Application number
PCT/DE2004/000902
Other languages
German (de)
English (en)
Inventor
Dietmar Von Zwehl
Peter Schiller
Valentin Krumm
Original Assignee
Lindauer Dornier Gesellschaft Mbh
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 Lindauer Dornier Gesellschaft Mbh filed Critical Lindauer Dornier Gesellschaft Mbh
Priority to EP04730196A priority Critical patent/EP1644562A1/fr
Priority to JP2006519751A priority patent/JP4198731B2/ja
Publication of WO2005010257A1 publication Critical patent/WO2005010257A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/146—Independent drive motor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/273—Rapier rods
    • 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
    • D03D49/60—Construction or operation of slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/005—Independent drive motors

Definitions

  • the heald frames, the sley and the reed, and the weft insertion elements perform in a conventional weaving a reciprocating motion, which, as in the batten with the reed, a reciprocating pivotal movement about a stationary horizontal axis or
  • a linear reciprocating motion may be on a predetermined path.
  • the drives for generating these reciprocating movements are usually derived from a main drive shaft of the loom via eccentric or crank gear.
  • a fundamental disadvantage of these known drive devices is that their efficiency is relatively small because the energy to be applied to accelerate the reciprocating masses. is largely lost in the subsequent delay. Also, these so-called reversing drives in their
  • a reciprocating oscillating motion generating drive means for the shedding means of a loom are described in JP 2002-022747 and DE 10 111 017 A1, while from DE 28 08202 A1 discloses a method and apparatus for controlling the movement of the reed a weaving machine and from DE 3325 591 A1 an arrangement for relieving the drive mechanisms, such as the gripper bar drive and the reed drive on looms are known.
  • the object of the invention is therefore to provide a drive device for generating a reciprocating motion of a driven component, in particular in weaving machines, which is characterized by high efficiency and good dynamic properties at the respective, if necessary. Also changing operating conditions.
  • the drive device according to the invention has the features of claim 1.
  • the new drive device has a drive source coupled to a reciprocating member and reciprocating, which may be of any mechanical, pneumatic or hydraulic or electromechanical nature.
  • the reciprocating, driven component and / or the drive source is associated with an energy store for storing potential energy during at least a portion of the reciprocation of the component.
  • This energy store can have mechanical storage means, for example in the form of spring means or pneumatic and / or hydraulic storage means, or contain electromagnetic or mechanical storage means.
  • This energy store and / or the drive source is or can be controlled in any case. They are assigned a control device for control in dependence on measured and / or predetermined parameters for the movement sequence of the driven component. Measured parameters may be, in particular, the path or angle of rotation, the speed or acceleration of the driven component or a part connected or coupled thereto.
  • the path-time diagram, or the speed-time diagram or the acceleration-time diagram of the driven component freely and / or program influenced, so that it is also adapted to the practical operating requirements even when the Change operating conditions.
  • the drive means coupled to the drive device a drive device forming a vibratory system, is adjustable in its natural frequency by influencing the energy store and by the control device such that the oscillatory system is at least largely in the vicinity of Resonance point works.
  • the invention makes it possible to freely define the movement profile, ie the path-time diagram, in the maximum available reversing area of the reciprocating movement of the actuating means.
  • the control device which engages the drive source and / or in the energy storage takes over the complete control of the vibration system. Taking into account the actual data for position, speed and acceleration of the driven component or of a part connected or coupled thereto, the control device coordinates its entire movement sequence. This also includes, if necessary, the definition of the reversal points of the reciprocating motion, ie the amplitude of the oscillatory motion, which amplitude may also be variable over time.
  • the energy store and the drive source can also be temporarily switched on and off and at least partially continuously adjustable between these two extreme states.
  • the arrangement can be such that the electromagnetic storage means have at least two magnetic poles movably mounted against each other, the polarity and / or the magnetic induction of at least one of the magnetic poles can be influenced by the control device.
  • the arrangement is for example such that an air gap is present between the magnetic poles and that the air gap in the direction of the movement reversal of the component changes in its geometric dimensions.
  • the energy store may also have mechanical storage means that can be influenced by the control device.
  • These mechanical storage means may comprise spring means whose spring characteristic is variable by the control means.
  • the spring means may comprise at least one spring element subjected to bending, the effective bending length of which can be changed by the control device.
  • the energy store may comprise pneumatic and / or hydraulic storage means, which can be influenced by the control device.
  • the storage means have a space enclosed by a movable wall and containing a storage fluid, wherein the movable wall can be influenced by the control device.
  • the drive source may be electrical, hydraulic or pneumatic type.
  • the restoring force / travel characteristic of the energy accumulator can have a linear, progressive, degressive, continuous and / or discontinuous form and can be changeable at least in sections in its steepness by the control device.
  • the Energy storage contain storage means which controlled by the control device, a hysteresis.
  • the drive device may comprise damping means for the reciprocating oscillatory movement, wherein these damping means can be influenced by the control device.
  • the drive device according to the invention can be used in particular for such drive tasks in weaving machines, in which it is important to achieve a reciprocating motion of driven components.
  • This object is posed not only in the drive of the batten with the reed, the rapier of a rapier, the shafts, the breast tree, etc., but also in jacquard drives and the drive flor-forming devices and other reciprocating components, such as. those of a weft insertion device, a weft brake and in case of forming elements of Jacquard machines.
  • the new drive device but also for flat knitting and -Wirkmaschinen and needle felting machines and other machines and devices can be used in which similar tasks occur. Even applications outside the textile industry are conceivable.
  • FIG. 1 shows a drive device according to the invention in a first embodiment, in a schematic sectional view for illustrating the principle of action of an electromagnetic storage medium containing energy storage
  • FIG. 2 shows a diagram for illustrating the basic mode of operation of the drive device according to FIG. 1, illustrating the angle of rotation and the rotational speed as well as the excitation current as a function of time
  • 3 shows a drive device according to the invention in a second embodiment, in a schematic sectional view similar to FIG. 1 for illustrating the active principle of an energy storage device containing mechanical storage means
  • FIG. 4 shows a drive device according to the invention in a third embodiment with an energy storage device containing mechanical storage means, in a schematic side view,
  • FIG. 5 shows a modified embodiment of the drive device according to FIG. 4, in a corresponding schematic side view
  • FIG. 6 shows the drive device according to FIG. 4 with an energy store containing electromagnetic storage means, in a corresponding schematic representation, FIG.
  • FIG. 7 shows the drive device according to FIG. 5 with an energy store containing electromagnetic storage means, in a corresponding embodiment, FIG.
  • FIG. 8 is a schematic diagram illustrating the reed movement in a loom, in cross-section and in a side view, illustrating two different reed positions
  • FIG. 9 shows the drive device according to FIG. 4 together with a reed of a weaving machine driven by it, in a schematic side view according to FIG. 4, FIG.
  • FIG. 10 shows the drive device according to FIG. 5 together with a reed of a weaving machine driven by it, in a schematic side view corresponding to FIG. 5, FIG.
  • FIG. 11 two drive devices of FIG. 9, together with a cutout of a driven from them reed of a loom, in perspective, ⁇ a schematic representation; 12 shows two drive devices according to FIG. 4, together with a weaving sheave of a weaving machine driven by them, in a schematic, perspective representation, FIG.
  • FIG. 13 shows an arrangement similar to FIG. 12, illustrating three drive devices according to FIG. 4 for driving a weaving sheave of a loom, as shown in FIG. 12, FIG.
  • FIG. 14 shows several drive devices according to FIG. 4, arranged in an arrangement plane for driving heald frames of a weaving machine, in a schematic, perspective illustration partly in section, FIG.
  • FIG. 15 shows an arrangement similar to FIG. 14, illustrating drive devices according to FIG. 4 in two arrangement planes, in a schematic perspective view similar to FIG. 14, FIG.
  • FIG. 16 shows the drive device according to FIG. 5 in a design for driving a shaft of a weaving machine, illustrating three different positions in the shed formation, in a schematic side view similar to FIG. 5, FIG.
  • FIG. 17 shows a drive device according to the invention in an embodiment similar to FIG. 4 for driving a gripper bar of a rapier weaving machine, in a schematic side view,
  • FIG. 18 shows a drive device according to the invention in an embodiment for generating a linear reciprocating movement, in axial section, in a side view and in a schematic representation,
  • 19 and 20 show two different pneumatic energy stores for a drive device according to the invention, in axial section, in a side view and in a schematic representation.
  • the illustrated in Fig. 1 embodiment of a drive device according to the invention is in the form of an electric motor reversing drive.
  • the illustration is only schematic and serves in particular to explain the principle of effect of the invention.
  • the device has a fixed cylindrical stator 1, which is at a radial distance is surrounded by a concentric, hollow cylindrical rotor or rotor 2, the storage is not shown in detail.
  • the rotor 2 carries on its inner wall permanent magnetic poles 3, which are arranged in the division ratio of the maximum Reversierhubs the rotor 2.
  • the permanent-magnetic poles 3 Of the permanent-magnetic poles 3, only two diametrically opposite poles 3 are shown in FIG. 1, which corresponds to a reversing stroke of the rotor 2 of slightly less than 180 ° because of the pole width.
  • the permanent magnetic poles 3 are, as indicated in the drawing with the letters "N (ord)" and “S (üd)", polarized in the circumferential direction and have substantially planar pole
  • the rotor poles 3 are arranged on the cylindrical stator 1 arranged magnetic poles 5, which cooperate with the permanent magnetic poles 3 of the rotor 2 in the manner shown in FIG. 1 manner.
  • the stator poles 5 preferably carry flat pole faces 6, which are directed so that they preferably face the pole faces 4 of the permanent magnetic rotor poles 3 with formation of an air gap 9 with a corresponding position of the rotor 2 over a large area, i. are aligned approximately parallel to these.
  • the stator poles 5 are also polarized in the circumferential direction, as indicated by the letters "N" and "S" in Fig. 1. Instead of the illustrated two diametrically opposed stator poles 5 also several such pole pairs may be present.
  • the stator poles 5 are not permanently magnetic, but indicated at 7
  • Excitation coils provided, which allow to generate a magnetic flux, which results in the indicated in Fig. 1 polarization at the pole faces 6.
  • the exciting coils 7 are supplied with an excitation current I e, which is fed by lines indicated at 8 and it allows to control in the air gaps 9 between opposing pole faces 4, 6 prevailing magnetic induction.
  • the rotor 2 is surrounded by a hollow cylindrical, coaxial outer stator 10, which carries on its inside indicated, corresponding stator coils 11 which are distributed uniformly generally around the circumference and of which Fig. 1, only a few are indicated.
  • the stator coils 11 cooperate with the rotor 2 in the manner of a DC or AC motor, such that a torque can be exerted on the rotor 2 whose direction and magnitude can be controlled by appropriate excitation of the stator coils 11.
  • the stator current is supplied to the stator coils 11 via lines 12.
  • a separate drive source coupled to the rotor 2 could also be provided, which is designed, for example, in the form of a separate coaxial electric motor or the like and which allows it to be applied to the rotor 2 timed to exert a torque in one or the other direction of rotation.
  • This separate drive source is indicated schematically at 13; their power supply is indicated by dash-dotted lines at 14.
  • the rotor 2 is also associated with an indicated at 15 sensor, the bpsw. may be formed in the form of a resolver or an encoder and emits electrical signals via a line 16, which are indicative of the angular position and / or the angular velocity or the angular acceleration and / or the respective position of the rotor 2.
  • the sensor 15 may of course be coupled to a coupled to the rotor and driven by this component, so that it does not directly, but indirectly detected the characteristic for the state of motion and the position of the rotor 2 signals.
  • Fig. 1 On the rotor 2 or on a connected or coupled to this driven part damping means can attack, which are indicated in Fig. 1 in the form of a friction brake device 17, the working cylinder 18 can be controlled by electrical signals which are supplied via lines 19.
  • the device has a central electronic control device 20 which operates on a microprocessor basis and is usually program-controlled.
  • the control device 20 is connected to the line 8, 12, 14, 16, 19 and controls in particular the excitation of the excitation coils 7 of the stator poles 5 and the excitation of the stator coils 11 and, if necessary, the damping means 17, 18 and, if present, the separate drive source 13. It receives from the sensor 15 information about the respective rotor position and / or about the respective rotor rotational movement characterizing parameters, as already mentioned above. Alternatively, individual ones of these variables can also be calculated in the control device from the information supplied by the sensor 15, for example, the angular velocity and acceleration can be derived from the rotational angle information of the sensor 15.
  • An input unit 21 connected to the control device 20 makes it possible to intervene from outside into the program of the control device 20 and / or to input predetermined data into the control device.
  • the mode of operation of the drive device basically described so far for generating a reciprocating rotary movement of the rotor 2 is as follows:
  • the rotor 2 has, together with about him coupled to it, driven by him components, a certain mass m, which must be accelerated and decelerated in a reversing movement in each cycle of movement.
  • the mutually facing pole faces 4, 6 of the rotor and the stator poles 3, 5 are polarized in the same direction, so that upon the approach of the rotor poles 3 to the stator poles 6 of the rotational movement counteracting repulsive forces between the rotor and the stator poles 3, 5 occur.
  • the kinetic energy stored in a rotational direction of the rotor 2 in a rotational direction is stored in the approach of the pole faces 4, 6 in the form of magnetic energy in the air gap 9 between the approaching pole faces 4, 6.
  • the magnetic poles 3.5 therefore form an energy store with electromagnetic storage means.
  • the restoring force k which rises sharply with increasing proximity of adjacent pole faces 4, 6, is dependent on the prevailing in the air gap 9 magnetic induction and can thus be controlled by the electrical flooding of the excitation coils 7 of the stator 1.
  • This natural frequency can be varied by changing the excitation of the exciting coils 7 and thus the induction in the air gaps 9 by the control device 20, as shown in the diagram illustrated in FIG. 2:
  • the Drehwinkelhub is about 170 °; he is smaller than 180 ° because of the pole width.
  • the rotor 2 executes a torsional vibration with a certain natural frequency, which is substantially sinusoidal (see Figure a) of Fig. 2).
  • the angular velocity is sinusoidal and the same frequency, as the image b) of FIG. 2 shows.
  • This condition applies to the time ti to which the exciting current l e gem.
  • Figure c) of Figure 2 on the value l e o is constant.
  • the control device 20 increases the flooding of the excitation coils 7, that is, the excitation current increases, as shown in Figure c), to the value l e ⁇ .
  • the restoring force k originating from the energy store formed by the magnetic poles 3, 5 also changes, with the result that the natural frequency of the system increases, as shown in the images a) and b).
  • the amplitude of the oscillatory motion is somewhat reduced, as shown in picture a).
  • the control action on the excitation of the excitation coils 7 and thus on the restoring force / displacement characteristic of the energy accumulator formed by the magnetic poles 3, 5 can in particular also take place at the reversing points of the oscillatory movement. It may also be useful in certain applications to change the properties of the energy storage in the course of a back and / or a movement at a certain time, this time also influenced by the example. From the sensor 15 or from a program information coming or can be determined. In addition, it is still possible by driving the damping device 17, 18 in the oscillating movement of the rotor 2 to introduce a mechanical damping, which can also be controlled by the control device 20 time-dependent.
  • the rotor 2 can carry out essentially free oscillations, wherein it then receives only the energy required to cover the frictional losses via the external stator 10 and its stator coils 11, which means that the torque exerted by the stator coils 11 on the rotor 2 only briefly during an outward or
  • Movement of the rotor 2 comes to act. Basically, the same conditions apply, however, also for purposes in which the stator coils 11 and / or the drive source 13 are controlled so that the rotor 2 performs a forced oscillation.
  • control device 20 it is possible via the control device 20 to set up a virtually arbitrary travel (rotation angle) time diagram of the oscillatory motion of the rotor 2 and the driven parts coupled thereto and thus to take account of different or changing operating conditions of the driven components in a relatively simple manner , In particular, the conditions at the start and end points of the oscillatory motion can be set appropriately.
  • Energy storage can be charged or discharged at the start and end points, which is important for the start-up or stopping process of the loom. If appropriate, the energy store may also be controlled to have hysteresis, i. in the forward movement, there is another course of the restoring force k as in the return movement.
  • a major advantage of the invention is in particular that the natural frequency of the oscillatory system explained above can be influenced, so that in the case of a forced oscillation, the resonance can be conveniently placed so that there are particularly favorable dynamic motion conditions with high efficiency.
  • an electromagnetic energy store formed by the magnetic poles 3, 5 is assigned to the rotor 2
  • a mechanical energy store is present, which is at the reversal points of the oscillating motion of the rotor 2 whose kinetic energy briefly converts into potential energy, then to accelerate the rotor 2 in the other direction of movement.
  • the same parts in Figs. 1 and 3 are provided with the same reference numerals and not explained again.
  • the hollow cylindrical rotor 2 carries in this embodiment on its inner wall radially projecting, mechanical storage means forming leaf springs 22, of which four are arranged in pairs opposite one another.
  • the number of leaf springs 22 may also be chosen differently.
  • the leaf springs 22 are made of spring steel or preferably carbon fiber material. They are firmly clamped at one end to the rotor 2 at 23 and at the other end each received in the nip of a pair of rollers 24, which is mounted on a stationary actuator 26 via corresponding guide means 27.
  • the actuator 26 can be controlled by the control device 20 via a line 8a so that it adjusts the roller pairs 24 in the radial direction of the associated leaf springs 22 and / or changes the clamping force exerted by the pairs of rollers on the clamping line on the respective leaf spring 22 clamping force.
  • the leaf springs 22 form a mechanical energy store which temporarily stores the kinetic energy of the rotor 2 and the parts coupled thereto in the form of potential energy.
  • the actuator 26 the clamping point of the leaf springs 22 and thus the effective bending length of the leaf springs 22 can be changed. This results in an immediate engagement on the spring characteristic, i.
  • the leaf springs 22 may also be arranged in a direction deviating from the radial position alignment with the rotor 2, as it is also conceivable to make it over its length with variable thickness and / or width, for example.
  • the cylindrical stator 1 is formed as a hollow cylinder and provided with an internal spline 29, which allows the stator 1 rotatably set up on a not shown spline.
  • the stator 1 is enclosed at a radial distance from the cylindrical rotor 2, which cooperates with the stator 1 in the manner of a conventional DC or AC motor, wherein the associated electromagnetic poles and / or coils are indicated schematically at 30.
  • This motor, generally designated 31, is an external rotor motor as known per se (see DE 101 11 17 A1).
  • Drive lever 34 is fixed, the end a pivot point 35 for a driven component, in particular a weaving machine having.
  • the leaf spring 22 is received in the vicinity of its free end in the nip 39 of the associated roller pair 24, whose roles together by associated, for example.
  • a spindle or wedge gear formed adjusting devices 40 in the longitudinal direction of the leaf spring 22 between in Fig. 4 with solid lines and the dashed line indicated position are adjustable.
  • the two adjusting devices 40 are controlled by electromechanical actuating means 41, which together with the adjusting devices 40, the actuator 26 of FIG. 3 form.
  • the control device 20, the input part 21 is not shown in Fig. 1, controls on the one hand via the control means 32, the reversing of the rotor 2 and thus the drive lever 34 by determining its amplitude, while on the other hand via the actuating means 41 to the adjusting devices 40 of Roller pair 24 engages to adjust this in the direction of the double arrow 42.
  • the free clamping length of the leaf spring 22 is changed, which has a corresponding change in the spring characteristic of the energy generated by the leaf spring 22 energy storage result.
  • the rollers 24 may otherwise also be braked if necessary, wherein the braking effect can be controlled by the control device 20. In this way, a controlled damping can be introduced into the system, as illustrated by the damping device 17, 18 in Fig. 1, 2.
  • the spring characteristic of the leaf spring 22 is, incidentally, not linear.
  • the embodiment according to FIG. 5 differs from that according to FIG. 4 substantially only by the design of the motor 31.
  • the motor designated here by 31a is designed as a so-called circular sector linear motor.
  • the basic structure and operation of such circular sector linear motors are e.g. known from DE 19849728 A1, so that it need not be discussed in detail.
  • the rotor 2 is rotatably supported in this embodiment on the cylindrical, formed with the internal spline 29 of FIG. 4 stator 1 by means of a rolling bearing 43, wherein its drive lever 34 between the fully extended in Fig. 5 shown angular position and the dashed angle shown there - and is movable.
  • the electromagnetic drive winding 30a is distributed in a circular sector and is controlled by the reversing control means 32 by the control device 20.
  • the rotor 2 is again provided with the radially projecting leaf spring 22 according to FIG. 4, which is accommodated in the clamping point 39 of the associated roller pair 24.
  • the leaf spring 22 is disposed opposite to the drive lever 34 at a different angle from 180 °.
  • the mode of operation of the mechanical energy accumulator formed by the leaf spring is the same as in the embodiment according to FIG. 4.
  • Leaf springs 22 with an electromagnetic energy storage in principle similar to that shown in Fig. 1, are formed.
  • the same parts are again provided with the same reference numerals as in FIGS. 4, 5 and not explained again.
  • FIG. 6 corresponds to that of FIG. 4 with the difference that instead of the leaf spring 22, an elongated, plate-shaped pole piece 44 is connected radially projecting with the rotor 2 on the mounting clamp 36.
  • the sensor 15 is omitted for the sake of simplicity.
  • the pole piece 44 carries a permanent magnetic, plate-shaped magnetic pole 3, whose plane parallel to the radial axis of symmetry 45, lateral, side pole faces are denoted by 4. Symmetrical to the axis of symmetry 45 of standing in the center position shown in Fig.
  • the two excited via excitation coils 7 stationary poles 5 are arranged, the pole faces are denoted by 6 and such an inclination with respect to the axis of rotation of Have rotor 2, that the pole faces 4, 6 in the limit positions of the direction indicated by the double arrow 33 reciprocating oscillating motion over a large area to form an air gap 9 are opposite to each other.
  • the excitation coils 7 are driven by a driver circuit 20a, which forms part of the control device 20 and is controlled by this.
  • the excitation coils 7, controlled by the control device 20 so excited that they at least temporarily during the reversing of the rotor 2 generate the same magnetic polarities, so that the for the oscillatory movement of the rotor 2 to each other facing polar surfaces 4, 6 results in required restoring force, wherein the kinetic energy of the rotor 2 associated mass m is stored in the present in the air gap 9 magnetic field as potential energy.
  • FIG. 7 corresponds to that of FIG. 5 with the already explained with reference to FIG. 6 difference that the energy storage operates with electromagnetic storage means.
  • Function and structure of the energy storage are as in the embodiment of FIG. 6, so that it is sufficient to refer to this extent.
  • Like parts have the same reference numerals.
  • FIG. 8 illustrates a section of a weaving machine with a representation of the movement conditions of the reed during the weft stop.
  • the reed 50 is pivoted between the two pivot positions shown in Fig. 8, of which the left position represents the weft stop position.
  • the weft threads to be attached to the fabric indicated at 51 are indicated at 52.
  • the warp threads are indicated at 53 and are in the open compartment position.
  • Theressbreithalter is indicated schematically at 54.
  • the embodiments of the new drive device shown in FIGS. 4, 5 can be used, for example, as illustrated in FIGS. 9, 10. With these figures, the same components are provided with the same reference numerals and not explained again. Shown is only the rotor 2 with the parts arranged thereon.
  • the stator 1 and the winding 30 serving for coupling to the rotor 2 are not shown again for the sake of simplicity.
  • On the integrally formed on the rotor 2 drive lever 34 of the drive device is a cross-sectionally U-shaped clamping rail 55 is placed, in which the reed 50 is used directly.
  • the reed 50 is fixed to its frame by suitable fastening means, such as clamping screws or the like detachably mounted in the clamping rail 55 so that it can be replaced if necessary.
  • suitable fastening means such as clamping screws or the like detachably mounted in the clamping rail 55 so that it can be replaced if necessary.
  • a plurality of drive devices may be provided, as illustrated in FIG. 11.
  • the stators 1 of these drive devices sit with their internal splines 29 rotationally fixed on a continuous, indicated in Fig.
  • the shaft 56 is rotatably supported in the machine frame, which is not illustrated in detail.
  • the number and the distance of the drive devices depend on the weaving width, ie the length of the reed 50.
  • the drive devices can of course also be designed according to FIG. 7.
  • FIGS. 12 to 15 show the use of the drive devices according to the invention according to FIG. 4 as so-called shaft lever motors for moving the shafts of a weaving machine.
  • a shaft designated 60 is coupled in each case via at least two push-pull rods 61 to the drive lever 34 of the rotor 2 of an associated drive device according to FIG. 4, wherein each push-pull rod 61 is coupled at 35 to its drive lever 34.
  • the rotors 2 execute the reciprocating oscillating movement, as explained with reference to FIG. 1, corresponding to the double arrow 33, as a result of which the coupled shaft 60, corresponding to a double arrow 62, in the dimensions required for shedding and is moved. While the relationships are shown in Fig. 12 for the case that only two drive devices are coupled to the heald 60, Fig.
  • the drive means for the juxtaposed shafts 60 may be arranged alternately on one and on the other side of the respective push-pull rod 61 in an assembly plane, while Fig. 15 shows that also two arrangement planes are used for the drive devices can. In this way, it is possible to increase the axial length of the rotors 2 and the associated stators 1 beyond the limit given by the predetermined distance 63 (usually 12 mm) of adjacent shafts 60, as indicated in FIG. 13 in order to achieve greater lifting power. 12 to 15 it can be seen that the rotors 2 according to the invention associated energy storage, eg.
  • FIG. 17 schematically illustrates the use of a drive device according to the invention according to FIG. 4 for driving the gripper bar of a rapier weaving machine.
  • the same reference numerals as in Fig. 4 are used and not explained again.
  • the rotor 2 carries in this case on the leaf spring 22 of the energy storage opposite side instead of the drive lever 34 of FIG. 4, a lever arm 34a on which a to the rotor axis of rotation coaxial toothed segment 65 is formed with a pinion 66 of a frame part 67 arranged angle gear 68 is engaged.
  • the angle gear 68 drives a drive gear 69, whose axis of rotation is perpendicular to that of the pinion 66 and whose teeth engage in the rack-like teeth of a rapier rod 70, which is indicated in Fig. 17 in cross section.
  • a reciprocating movement of the toothed segment 65 produces a reciprocating rotational movement of the drive gear 69 and thus a reciprocating motion of the rapier bar 70 at right angles to the drawing plane of FIG. 17.
  • the kinetic energy of the moved masses in the areas of the reversal points of the movement in the leaf spring 22 temporarily stored as potential energy, as has already been explained above.
  • the drive device has a driven member formed substantially in the manner of a rod 71, which extends through an electric, pneumatic or hydraulic linear drive source 72, which gives it a linear reciprocating oscillatory motion of predetermined amplitude.
  • an energy store in the form of a cylinder 73 is arranged on both sides, in which a piston 74 provided on the rod 71 is displaceably guided.
  • the cylinder 73 is closed at its two end sides, wherein the closure takes place on the respective outer end side by a cylinder cover 75, which is screwed into the cylinder 73.
  • the cylinder cover 75 By rotating the cylinder cover 75, therefore, the cylinder volume can be changed because the cylinder cover 75 forms a "movable wall" for the cylinder 73.
  • the cylinder 73 is filled with a storage medium that is elastically compressible, for example, air or a gas.
  • the cylinder 73 shown on the right in FIG. 18 is therefore provided with a device 76 which makes it possible to generate a variable intensity electric field in the cylinder space 77 filled with the rheological medium.
  • the associated field generation circuit is indicated at 78.
  • the drive device has an electrical control device 20, which, similarly as explained with reference to FIG. 1, the properties of the pneumatic energy storage in this case depending on parameters of the reciprocating motion of the rod 71 and / or predetermined or programmed parameters to change.
  • the drawn in Fig. 18 according to FIG. 1 sensor 15 is bpsw. path-dependent signals indicative of the reciprocation of the rod 71 and including the information relating to the position, speed, acceleration, the state of motion and the like of the rod 71.
  • leaf springs 22 can also be replaced by differently shaped spring means, for example spiral or torsion springs, whose effective length or

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  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un dispositif d'entraînement générant un mouvement de va-et-vient d'un composant entraîné, en particulier dans une machine à tisser, dispositif qui doit présenter un haut degré d'efficacité et de bonnes propriétés dynamiques, eu égard aux conditions respectives de fonctionnement, y compris aux conditions variables de fonctionnement. A cet effet, l'invention est caractérisée en ce que le dispositif d'entraînement comprend : une source motrice (2), accouplée à un composant (50), générant le mouvement de va-et-vient, un accumulateur d'énergie (22), associé au composant et/ou à la source motrice, accumulant l'énergie potentielle pendant au moins une partie du mouvement de va-et-vient du composant, et, un dispositif de commande (20), destiné à la commande d'au moins l'accumulateur d'énergie, en fonction des paramètres mesurés et/ou prédéterminés pour l'allure du mouvement.
PCT/DE2004/000902 2003-07-15 2004-04-29 Dispositif d'entrainement generant un mouvement de va-et-vient d'un composant entraine, en particulier dans une machine a tisser WO2005010257A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04730196A EP1644562A1 (fr) 2003-07-15 2004-04-29 Dispositif d'entrainement generant un mouvement de va-et-vient d'un composant entraine, en particulier dans une machine a tisser
JP2006519751A JP4198731B2 (ja) 2003-07-15 2004-04-29 特に織機の被駆動部品の往復運動を生成するための駆動装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10331916A DE10331916A1 (de) 2003-07-15 2003-07-15 Antriebsvorrichtung zur Erzeugung einer hin- und hergehenden Bewegung eines angetriebenen Bauteil, insbesondere in Webmaschinen
DE10331916.6 2003-07-15

Publications (1)

Publication Number Publication Date
WO2005010257A1 true WO2005010257A1 (fr) 2005-02-03

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PCT/DE2004/000902 WO2005010257A1 (fr) 2003-07-15 2004-04-29 Dispositif d'entrainement generant un mouvement de va-et-vient d'un composant entraine, en particulier dans une machine a tisser

Country Status (5)

Country Link
EP (1) EP1644562A1 (fr)
JP (1) JP4198731B2 (fr)
CN (1) CN1853009A (fr)
DE (1) DE10331916A1 (fr)
WO (1) WO2005010257A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
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WO2008037106A1 (fr) * 2006-09-28 2008-04-03 Textilma Ag Dispositif de formation de la foule pour un métier à tisser mécanique, en particulier un métier à tisser les rubans
WO2008049245A1 (fr) * 2006-10-25 2008-05-02 Textilma Ag Métier pour tissus étroits à entraînement électrique
WO2008141657A1 (fr) * 2007-05-18 2008-11-27 Sultex Ag Dispositif de formation de la foule
EP2390392A3 (fr) * 2010-05-24 2013-11-06 Kabushiki Kaisha Toyota Jidoshokki Dispositif de formation de foule dans un métier à tisser
EP2703532A1 (fr) * 2012-08-31 2014-03-05 VÚTS, a.s. Procédé et dispositif pour démarrer une machine à tisser
WO2019201433A1 (fr) 2018-04-18 2019-10-24 Picanol Dispositif d'entraînement pour un métier à tisser avec dispositif d'assistance

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DE502007002798D1 (de) * 2006-08-29 2010-03-25 Schneider & Ozga Breitwebmaschine
CN105525425A (zh) * 2016-01-18 2016-04-27 浙江理工大学 一种低振低冲击载荷的织机打纬传动机构
CN105803622B (zh) * 2016-06-06 2018-02-02 江苏宋和宋智能科技有限公司 一种综框固定式开口方法及其内置机械装置

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WO1997033024A1 (fr) * 1996-03-09 1997-09-12 Raymond Leslie Palmer Systeme de propulsion

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DE4337406A1 (de) * 1993-11-02 1995-05-04 Chemnitzer Webmasch Gmbh Antriebsvorrichtung für die Greifer an Webmaschinen
US5630449A (en) * 1994-09-06 1997-05-20 Sulzer Rueti Ag Energy storer, for reducing drive torque and improving power consumption in a weaving machine
WO1997033024A1 (fr) * 1996-03-09 1997-09-12 Raymond Leslie Palmer Systeme de propulsion

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7806149B2 (en) 2006-09-28 2010-10-05 Textilma Ag Shedding apparatus for a weaving machine, in particular for a ribbon weaving machine
WO2008037106A1 (fr) * 2006-09-28 2008-04-03 Textilma Ag Dispositif de formation de la foule pour un métier à tisser mécanique, en particulier un métier à tisser les rubans
CN101522971B (zh) * 2006-09-28 2011-02-09 泰克斯蒂尔玛股份公司 用于织机、尤其是织带机的梭口形成装置
KR101288223B1 (ko) 2006-10-25 2013-07-19 텍스틸마 악티엔게젤샤프트 전기적으로 동작하는 구동장치를 구비한 리본 직조기
CN101529001B (zh) * 2006-10-25 2012-05-16 泰克斯蒂尔玛股份公司 带有电操纵驱动器的织带机
WO2008049245A1 (fr) * 2006-10-25 2008-05-02 Textilma Ag Métier pour tissus étroits à entraînement électrique
TWI413718B (zh) * 2006-10-25 2013-11-01 Textilma Ag 具電動驅動裝置之織帶紡織機
WO2008141657A1 (fr) * 2007-05-18 2008-11-27 Sultex Ag Dispositif de formation de la foule
EP2390392A3 (fr) * 2010-05-24 2013-11-06 Kabushiki Kaisha Toyota Jidoshokki Dispositif de formation de foule dans un métier à tisser
EP2703532A1 (fr) * 2012-08-31 2014-03-05 VÚTS, a.s. Procédé et dispositif pour démarrer une machine à tisser
WO2019201433A1 (fr) 2018-04-18 2019-10-24 Picanol Dispositif d'entraînement pour un métier à tisser avec dispositif d'assistance
BE1026177A1 (nl) 2018-04-18 2019-10-28 Picanol Nv Aandrijfinrichting voor een weefmachine met een ondersteunende inrichting
BE1026177B1 (nl) * 2018-04-18 2020-02-27 Picanol Nv Aandrijfinrichting voor een weefmachine met een ondersteunende inrichting

Also Published As

Publication number Publication date
EP1644562A1 (fr) 2006-04-12
CN1853009A (zh) 2006-10-25
JP4198731B2 (ja) 2008-12-17
DE10331916A1 (de) 2005-02-24
JP2007506868A (ja) 2007-03-22

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