EP0605464A1 - Distributeur de fil pour machines textiles consommant des fils. - Google Patents

Distributeur de fil pour machines textiles consommant des fils.

Info

Publication number
EP0605464A1
EP0605464A1 EP92918729A EP92918729A EP0605464A1 EP 0605464 A1 EP0605464 A1 EP 0605464A1 EP 92918729 A EP92918729 A EP 92918729A EP 92918729 A EP92918729 A EP 92918729A EP 0605464 A1 EP0605464 A1 EP 0605464A1
Authority
EP
European Patent Office
Prior art keywords
thread
delivery device
storage drum
rotor
thread delivery
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.)
Granted
Application number
EP92918729A
Other languages
German (de)
English (en)
Other versions
EP0605464B1 (fr
Inventor
Erich Roser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0605464A1 publication Critical patent/EP0605464A1/fr
Application granted granted Critical
Publication of EP0605464B1 publication Critical patent/EP0605464B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/44—Tensioning devices for individual threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/16—Braked elements rotated by material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/40—Applications of tension indicators
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
    • D04B15/484—Yarn braking means acting on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a thread delivery device as a thread feeder for textile machines according to the preamble of claim 1.
  • Thread delivery devices also called storage suppliers - have already become known as thread feeders for textile machines, with a storage drum attached to the shaft end of an electric motor, on the circumference of which several turns of the thread to be conveyed rest without slip (DE-OS P 34 29 207.1-26) .
  • the speed of the storage drum is transferred directly to the electric motor of the storage drum by means of suitable pulse generators on the circular knitting machine via control electronics. This creates a so-called electrical wave between the machine and the thread delivery device.
  • Other sensors that scan the thread readjust the setpoint.
  • Electric motor is attached.
  • the signal is given to the motor via a sensor lever on the thread, which
  • REPLACEMENT LEAF is magnetically held in a changeable position.
  • the adjustable return force on the lever then corresponds to the changeable setpoint for the required thread tension.
  • the known thread delivery devices have an upstream, fixed or variable thread brake for perfect winding formation on the storage drum.
  • the thread is either through an eyelet z. B. is weighted by means of a ball, guided or it is pulled through a disc brake.
  • the thread windings on the storage drum will naturally lie hard and pull together with large braking forces, whereby most types of thread are stretched.
  • the thread relaxes at the measuring point, e.g. B. on a feeler lever, wherein the feeler lever itself can vibrate. The lever must therefore be mechanically calmed again.
  • the invention is based on the object of creating a yarn delivery device in which the individual assemblies can be precisely coordinated with one another and thus an optimal overall system is created.
  • the object of the invention is also to improve or optimize individual assemblies of the thread delivery device for respective special applications.
  • the thread delivery device according to the invention has the advantage over the known devices that all components of the device have been optimized and matched to one another.
  • the design of the EC motor enables a detent force-free drive in the de-energized state, so that a simple mechanical threading of the thread is possible. Due to the use of a low-mass rotor or rotor, which serves as a magnet carrier for permanent magnets, a very small size with a small axial length can be achieved. The engine works with low-noise operation and high efficiency and thus low heating. The possible arrangement of the associated electronic circuit board near the motor also enables a very compact structure of the overall device. The high-quality permanent magnets in the rotor, which interact with a corresponding number of coil groups in the stator, are responsible for the high efficiency.
  • An essential advantage of the invention lies in the combination of the motor according to the invention with the storage drum connected to it in one piece.
  • the rotor or rotor of the DC motor serves as the basis for the storage drum, whereby - apart from the mass of the high-performance magnets - a system was created that is extremely light and therefore easy to accelerate.
  • the system is made of a light plastic disc as a magnetic carrier and rotor, to which the X-shaped steel wires are attached in one piece and connected with an outer ring.
  • the X-shaped steel wires on the circumference of the storage drum form a run-up slope for the thread, whereby two threads can be stored and thus delivered at the same time.
  • a further advantage of the invention lies in the control of the thread tension after the storage drum, which is brought about by a special spiral spring designed in the shape of a trumpet or as a rotation cone.
  • the deflection of the spiral spring is directly related to the thread tension and thus the amount of thread required.
  • a thread brake provided in front of the storage drum, which likewise works with the lowest bearing friction resistances and can be adjusted and / or regulated by a magnetic field provided on the side. In this way, the feed of the thread to the storage drum can be regulated and adjusted.
  • the thread brake, storage drum and spiral spring are matched to one another in terms of control technology in such a way that optimum thread feeding for the textile machine is ensured.
  • Fig. 3 shows a longitudinal section of the
  • Thread delivery device in particular by the DC motor
  • Fig. 7 is a schematic representation of the thread break sensor.
  • the thread delivery device 1 shown in Figures 1 to 3 consists of a housing 2 for receiving a drive motor 3 and a circuit board 4 for the control electronics.
  • the drive motor 3 forms a structural unit with the storage drum 5, as shown in more detail in Figures 4a, b.
  • the thread delivery device 1 also has a thread brake 6, a thread break sensor 7 as units connected upstream of the storage drum 5, and a thread tension sensor 8 which is connected downstream of the storage drum 5 to control the thread tension.
  • a thread brake 6, a thread break sensor 7 as units connected upstream of the storage drum 5
  • a thread tension sensor 8 which is connected downstream of the storage drum 5 to control the thread tension.
  • the drive motor 3 is designed as an electronically commutated four-pole DC motor. Due to the disc rotor structure, it has a small axial length.
  • the DC motor 3 consists of a rotor or rotor 10 designed as a plastic disk, which serves as a magnet carrier. For this purpose, four round or differently shaped permanent magnets 12 are embedded in the plastic disk 11.
  • the stator 13 of the direct current motor consists of two coil groups 14, 15 with yoke plates 16, 17 arranged behind them, which are placed on a hollow shaft 18.
  • the rotor 10 is mounted on the hollow axis 18 via two ball bearings 19 to compensate for the alternating tilting moment caused by the magnetic field.
  • the hollow shaft 18, with a longitudinal bore 20 and two transverse bores 21, 22 at its respective end, serves to receive the switching connection wires 23 between the coil group 14 and the control board 4.
  • the coil group 15 is connected to the circuit board 4 via a corresponding switching connection wire 23 '.
  • This hollow shaft 18 also receives a switching connection wire which actuates the thread break indicator light.
  • the structure of the coil groups 14, 15 is completely identical and can therefore be produced using the same tools.
  • the hollow axis 18 passes through the circuit board 4 for the control electronics and is fastened to the rear of the housing by means of a nut 24.
  • the rotor 10 which is designed as a plastic disk 11 with magnets 12, is designed such that it also serves as a component of the storage drum 5, also called a thread wheel.
  • the outer rim 25 of the plastic disc 11 has a circumferential shoulder 26 with the bores 27, into which the individual wires 28, 28 'of a thread feed cross are embedded, which form a wire mesh 29 all around (see also FIGS. 4a, 4b.
  • the wire mesh 29 becomes delimited on the side opposite the plastic disk 11 by an outer plastic ring 30, which likewise has bores 31 for receiving the individual wires 28, 28 '.
  • Spare sheet On the outer diameter or the lateral surface of the plastic ring 30 or the plastic disk 11 formed thereby there are z. B. five to eight thread feed crosses in an X-shaped arrangement, consisting of the used polished steel wires 28, 28 ', which together forms the wire mesh 29 arranged on the outer circumferential surface of the storage drum 5.
  • the angle 0 enclosed in the axial direction of the drive motor (between two associated wires 28, 28 'is approximately 0 ° .60 ° to 110 ° (see Figure 4a).
  • the electronically controlled direct current motor 3 works without detent force in the de-energized state, so that simple manual threading of the threads is possible.
  • a low-mass design of all rotating parts of the rotor 10 and the storage drum 5 and the use of high-quality permanent magnets 12 result in extremely short run-up times of the motor.
  • the motor is controlled by reaction force in order to regulate the thread tension. Due to the high efficiency of the DC motor, there is little heating.
  • the electronic circuit board 4 can be arranged directly in the vicinity of the motor, which results in a very compact construction of the overall device.
  • the storage drum 5 is equipped on the front side with an additionally flashing indicator light 32 for indicating a broken thread.
  • the front of the device shown in FIG. 2 and the associated side view in FIG. 1 further shows an inlet eyelet 35, 36 for feeding two threads 33, 34 for feeding the threads to a double-thread brake 6.
  • This double-thread brake 6, shown in more detail in FIG. 6, consists of two closed ball bearings 37, 38 arranged side by side in a ball bearing housing 74, on the outer surface of which the respective thread 33, 34 with at least
  • the thread brake 6 can be equipped with a ball bearing for the delivery of a thread or with a double ball bearing for the delivery of two threads. If two bearings are provided, they both have an independent braking effect.
  • the thread brake 6 is followed by a thread break sensor 7. This arrangement is shown in more detail in FIG. 2 and in FIG. 7.
  • a bearing 40 mounted in the housing 2 was used to support a lever 41.
  • a pin 42 perpendicular to the lever 41 which is held in its position or position by means of the continuous thread 33, 34. If a thread break occurs, the lever 41 falls due to gravity into the broken position of the thread break sensor 7 'shown in FIG.
  • a shaft 43 leads through the bearing 40.
  • a permanent magnet 44 which is attached in such a way that a reed relay 45 is switched on or off by the pivoting movement of the lever shaft 43.
  • the reed relay actuates the thread break indicator light 32 at the same time as the circular knitting machine is switched off.
  • the lever 41 exerts only slight friction on the thread 33, 34 via the pin 42. It can be installed in the same way or as an alternative between the storage drum 5 and the thread tension sensor 8 in order to check a thread break there in the same way.
  • the deflection of the lever 7 must be effected by an additional spring when the thread breaks.
  • the device can thus be operated in any position.
  • the device is preferably directed radially outward with its front side or operating side 77 in order to enable simple front-side operation.
  • the thread 33, 34 guided via the thread brake 6 and the thread break sensor 7 is fed to the storage drum 5 as shown in FIGS. 1, 2 and 7. Therefor
  • ____rsaizbiatt form the storage drum 5 and the rotor 10 of the drive motor 3 a structural unit, using extremely light materials, so that a very low mass must be accelerated.
  • the run-up time of the motor is so short that threads of up to approx. 10 m per second can be fed directly to the running machine.
  • the clocked, collectorless and electronic control for the rotor 10 ensures a very low current consumption, which is up to three times the current consumption of known devices. Even in the event of an overload, the current consumption is automatically kept at a set maximum value, so that no damage to the rotor or rotor or the windings can occur even under prolonged standstill under load.
  • the polished steel wires 28, 28 'used in the X shape to form the wire grid 29 provided on the outer surface of the storage drum 5 ensure automatic thread feed on the storage drum 5.
  • the need for special run-up bevels is unnecessary, since this is due to the X-shaped arrangement of the wires 28, 28 'takes place itself.
  • the threads 33, 34 on the left half 46 and on the right half 47 of the width b of the wire mesh 29 can be fed.
  • each thread can be fed without problems in the outer two areas 48, 49, which have a width a ⁇ --2 b / 3.
  • the point of accession of the respective thread 33, 34 on the storage drum 5 can accordingly be chosen freely depending on the desired winding length, since the outer cone area 48, 49 permits a large number of turns. Two threads can be stored and delivered for two different knitting systems with the same thread consumption at the same time.
  • FIG. 5 a shows, for example, a storage drum 5 in which four thread layers 52 lying next to one another are wound on the lower half of the storage drum 5.
  • Each individual or both running threads basically runs from the center line 51, as shown in FIG. 4 a.
  • both thread lengths are also identical.
  • a thin cutting disc 75 can also be attached on the center line 51 to separate the two running threads. An attachment of the disc is unnecessary because transverse holes 76 are provided in the disc, through which the crossing point 50 of the wires 28, 28 'runs
  • the storage drum 5 is followed by a thread tension sensor 8, which serves to control the thread tension. Since the two threads 33, 34 drawn from the storage drum 5 are basically drawn from the same outer diameter of the storage drum 5, namely from the center line 51 (X crossing point 50), it is generally sufficient for only one thread 33 to be checked via the thread tension sensor 8 is, while the other thread 34 is guided by the storage drum 5 directly through an eyelet 53 (see Figure 2).
  • the uncontrolled thread like a twin, also undergoes the same change.
  • the thread brake 6 can possibly be dispensed with for some types of thread, because in most cases the thread resistance itself is sufficient to enable the thread to be wound onto the storage drum 5 in a braked manner.
  • the thread resistance results, for example, from the unwinding process from the bobbin and the associated deflections.
  • Thread tension sensor 8 is preferably done by a trumpet-shaped coil spring 54 which is attached to a rotatable head 55.
  • the rotatable head 55 has a shaft 56 which is guided in a bearing 57 into the interior of the housing 2. At the lower end of shaft 56
  • SPARE BLADES a permanent magnet 58 is attached centrically or eccentrically in such a way that it lies with the dividing line north / south on the central axis 59 of the device (see FIG. 2 and FIG. 5b).
  • An iron och 60 of a Hall sensor 61 on the opposite side holds the magnet 58 in the central position M, as shown in FIG. 5b.
  • the dividing line 62 between the north-south pole of the permanent magnet 58 is here on the central axis 59.
  • the Hall sensor 61 is placed in such a way that it activates the motor control with a slight angular deviation ⁇ from this central position M.
  • the adjustment of the thread tension can be done manually on the potentiometer 64 or computer controlled via the computer connection 65. By adjusting the offset zero tension on the Hall sensor, the desired position of the north-south transition of the permanent magnet 58 can be shifted, as a result of which the thread tension can be adjusted by means of V re £ or by means of computer control.
  • the formation of the thread tension sensor 8 with a wound, trumpet-shaped spiral spring 54 has the advantage that vibrations are absorbed, which can arise from the polygonal thread support on the circumference of the storage drum 5, whereby a smooth thread flow is achieved.
  • Spare sheet Thread 33 accordingly also represents an attenuator in the arrangement of the thread tension sensor 8.
  • Position 66 shows an optical setpoint display in FIG. 2, position 67 shows an optical operating display of the device. Position 68 shows a device on / off switch.
  • 1 and 3 furthermore show standard pins 69, 70 which, together with the ground connection 71, ensure the required power supply.
  • the connection 69, 71 is used to supply the device with the required known voltage of 24 volts.
  • the pin 70 serves as a conductor for the machine stop when the thread breaks.
  • the special embodiment of the thread delivery device according to the invention allows a direct replacement of the known belt-driven devices.
  • the knitting machine is also considerably simplified in terms of its construction and effort.
  • the devices according to the invention can also be operated in any position, provided that the thread break sensor 7 is not due to its own weight, but z. B. supported by a spring, can fall off when the thread breaks.
  • the thread run can also be guided from the eyelet 35, 36 without deflection via the thread brake 6 to the thread tension sensor 8.
  • the trumpet shape of the spiral spring 54 permits a gentle deflection of the thread into the spring, as well as a gentle guiding within the spring up to its lower outlet 72. The result is a hardly occurring fluff formation over the entire course of the thread.
  • the device weight could be reduced to half of the belt-driven devices.
  • the collectorless drive motor 3 automatically achieves a service life that of
  • a long-lasting flashing system by means of the thread break indicator light 32 allows a service life of approx. 5 to 10 years.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Looms (AREA)
  • Sewing Machines And Sewing (AREA)
  • Knitting Machines (AREA)

Abstract

Il est proposé un distributeur de fil servant à amener du fil dans des machines textiles. Afin de réaliser une régulation optimale du transport de fil également pour plusieurs fils, ledit distributeur de fil présente un tambour d'accumulation (5) fait d'une seule pièce avec le rotor du moteur de commande et présentant sur sa circonférence un treillis (29) de fils de fer disposés en X. Pour la régulation de la tension du fil de la machine consommant le fil, il est prévu un capteur de la tension du fil (8) dont la déviation mécanique provoque un réglage électronique du moteur de commande.
EP92918729A 1991-09-26 1992-09-03 Distributeur de fil pour machines textiles consommant des fils Expired - Lifetime EP0605464B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4132003 1991-09-26
DE4132003 1991-09-26
DE4206607 1992-03-03
DE4206607A DE4206607A1 (de) 1991-09-26 1992-03-03 Fadenliefergeraet fuer fadenverbrauchende textilmaschinen
PCT/DE1992/000751 WO1993006283A1 (fr) 1991-09-26 1992-09-03 Distributeur de fil pour machines textiles consommant des fils

Publications (2)

Publication Number Publication Date
EP0605464A1 true EP0605464A1 (fr) 1994-07-13
EP0605464B1 EP0605464B1 (fr) 1995-06-21

Family

ID=25907723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918729A Expired - Lifetime EP0605464B1 (fr) 1991-09-26 1992-09-03 Distributeur de fil pour machines textiles consommant des fils

Country Status (9)

Country Link
US (1) US5423197A (fr)
EP (1) EP0605464B1 (fr)
JP (1) JPH07502789A (fr)
CN (1) CN1040350C (fr)
DE (2) DE4206607A1 (fr)
ES (1) ES2074891T3 (fr)
MX (1) MX9205470A (fr)
TW (1) TW217430B (fr)
WO (1) WO1993006283A1 (fr)

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GB9904458D0 (en) * 1999-02-26 1999-04-21 New House Textiles Limited A device for tensioning yarn or the like
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EP2029802B1 (fr) 2006-06-21 2016-08-10 Memminger-IRO GmbH Fournisseur de fil
JP2009155779A (ja) * 2007-12-27 2009-07-16 Murata Mach Ltd 糸弛み取り装置及びそれを備える紡績機
DE102011015880A1 (de) 2011-04-04 2012-10-04 Kern Antriebstechnik GmbH Fadenlieferwerk
ITMI20111983A1 (it) 2011-11-02 2013-05-03 Btsr Int Spa Dispositivo alimentatore positivo per alimentare a tensione costante fili metallici
EP2602366A1 (fr) * 2011-12-05 2013-06-12 Pai Lung Machinery Mill Co., Ltd. Système de transport de fil pour machines à tricoter circulaires
CN102965827A (zh) * 2012-12-13 2013-03-13 慈溪太阳洲纺织科技有限公司 针织机上的纱线张力检测装置
CN108137261B (zh) 2015-08-11 2019-08-20 美国林克有限责任公司 可调节纱线张紧器、纺织机及张紧连续运行纱线的方法
US9856106B1 (en) * 2016-06-29 2018-01-02 The Boeing Company Dynamic feeding systems for knitting machines
DE102018115631A1 (de) * 2018-06-28 2020-01-02 Memminger-Iro Gmbh Fadenliefergerät und System mit einem Fadenliefergerät
CN110240023B (zh) * 2019-05-09 2023-12-19 清华四川能源互联网研究院 一种送丝装置及油气井脉冲放电机器
CN110923930B (zh) * 2019-11-12 2021-05-18 台州施特自动化有限公司 一种针织设备用进线机构
CN115323600B (zh) * 2022-08-25 2023-09-15 吴江市潇湘纺织有限公司 一种织布机用纱线张力器

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Also Published As

Publication number Publication date
DE59202634D1 (de) 1995-07-27
JPH07502789A (ja) 1995-03-23
DE4206607A1 (de) 1993-04-01
WO1993006283A1 (fr) 1993-04-01
CN1040350C (zh) 1998-10-21
US5423197A (en) 1995-06-13
TW217430B (fr) 1993-12-11
CN1071212A (zh) 1993-04-21
EP0605464B1 (fr) 1995-06-21
MX9205470A (es) 1993-03-01
ES2074891T3 (es) 1995-09-16

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