EP0305230B1 - Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse - Google Patents

Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse Download PDF

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Publication number
EP0305230B1
EP0305230B1 EP88401817A EP88401817A EP0305230B1 EP 0305230 B1 EP0305230 B1 EP 0305230B1 EP 88401817 A EP88401817 A EP 88401817A EP 88401817 A EP88401817 A EP 88401817A EP 0305230 B1 EP0305230 B1 EP 0305230B1
Authority
EP
European Patent Office
Prior art keywords
roller
web
machine
oscillating
intake
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
EP88401817A
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English (en)
French (fr)
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EP0305230A1 (de
Inventor
Michael Armelin
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.)
Machines Chambon SA
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Machines Chambon SA
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 Machines Chambon SA filed Critical Machines Chambon SA
Priority to AT88401817T priority Critical patent/ATE72554T1/de
Publication of EP0305230A1 publication Critical patent/EP0305230A1/de
Application granted granted Critical
Publication of EP0305230B1 publication Critical patent/EP0305230B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B65H20/32—Arrangements for accumulating surplus web by making loops
    • B65H20/34—Arrangements for accumulating surplus web by making loops with rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/06—Advancing webs by friction band
    • B65H20/08—Advancing webs by friction band to effect step-by-step advancement of web

Definitions

  • the present invention relates to a feeding device for a machine working on a sheet of material when stopped, applicable more particularly but not exclusively to the feeding of a flat cutting press.
  • this web is generally delivered upstream, in a continuous manner, from a coil.
  • the flat cutting press is a machine which requires a temporary stop of the running of the sheet of material, during the cutting operation, there occurs, due to the continuous feeding, an accumulation of the material to be cut, in upstream of the cutting press.
  • various devices have already been designed which make it possible to store the excess length of the ply in the form of a variable length loop.
  • This loop lengthens during the shutdown of the cutting press and it shortens as soon as the supply of the cutting press resumes, for a subsequent cutting operation, these operations taking place cyclically. Failure to maintain the sheet then causes positioning faults in the sheet as soon as the operating speed rises.
  • Another device as described in patent FR-A-2205053, comprises an oscillating cylinder over which the web passes before it enters the machine and means cyclically controlling the oscillation movement of the support of this oscillating cylinder.
  • the object of the present invention is to provide a device of particularly simple design, allowing easy adjustment for its adaptation to different formats, this adjustment even being able to be completed on the fly.
  • this supply device for a machine working on a sheet of material at a standstill, in particular for a flat blanking press, this sheet being continuously supplied, upstream of the machine, passing between a pair of call cylinders and counterpart of horizontal and transverse axes, tangent to each other, driven in rotation at a constant peripheral speed
  • this device comprising an oscillating cylinder disposed downstream of the call cylinder in the direction of travel of the ply, and which is rotatably mounted on a support which can oscillate around an axis, means for causing an oscillating movement of the support and of the cylinder which it carries, means for maintaining the tension of the ply arranged at the input of the machine and means for cyclically controlling the oscillation movement of the support and of the oscillating cylinder so that the length of the path of the web, between the call cylinder and the machine, is allo born or shortened to give the desired law for the advance of the web in the machine, law including in particular a stop phase in the machine, is characterized in
  • the device according to the invention offers the advantage that, whatever the format of the operation carried out in the machine, for example the format of the cutting, there is no sliding between the sheet of cut material and the oscillating cylinder of the fact that the latter is always rotated at the same peripheral speed as the call cylinder, from the latter.
  • This absence of sliding avoids altering the printing in the case of a printed web which is in contact with the oscillating cylinder by its printed face and it makes it possible to maintain the relative positioning of the web in the cutting machine with respect to the other devices upstream.
  • the control of the oscillation movement of the oscillating cylinder is provided on one side of the device, which results in a great simplification.
  • the feeding device also includes means making it possible to fine-tune, during the operation of the device, the adjustment of the amplitude of the oscillation movement of the oscillating cylinder. These fine adjustment means in operation also allow easily realize a servo of the device to any size such as the tension of the sheet.
  • the law of advancement of the sheet comprises an acceleration phase in which the instantaneous value of the acceleration is controlled in particular so that at the start of the sheet, which is a critical phase since it is necessary to ensure detachment of the web of the machine tool, this acceleration has a low value and that it then increases gradually.
  • Figure 1 is a schematic elevational view of a supply device for a machine working on a sheet of material stopped, according to the invention.
  • Figure 2 is a vertical and cross sectional view taken along line II-II of Figure 1, the oscillating cylinder being assumed to be aligned vertically below the call cylinder.
  • Figure 3 is a partial elevational view of the mechanism controlling the movement of the oscillating cylinder.
  • Figure 4 is a partial elevational view of an alternative embodiment.
  • the device according to the invention is intended to ensure the intermittent supply of a sheet 1 of any material, printed or not, which is worked at standstill by a machine 2 located downstream, such as for example a press to cut flat.
  • the sheet 1 is supplied continuously upstream, at a constant speed v, from any source, such as a reel, and it moves from right to left in FIG. 1, towards the machine shaping 2.
  • the feed device comprises two tangent horizontal and transverse cylinders between which the web passes, namely a lower call cylinder 3 and an upper counter cylinder 4.
  • the call cylinder 3 which is located under the sheet, is rotated from the previous machine, which is for example a reel, by means of a mechanical transmission shown schematically in Figure 1 and designated as a whole by the reference C.
  • the cylinder call 3 is secured to a coaxial gear 5 which is engaged with a coaxial gear 6 secured to an oscillating cylinder 7 located above the ply 1 so that the two cylinders 3 and 7 rotate in opposite directions.
  • the ratio of the pitch diameters of these gears 5,6 corresponds to that of the diameters of the two cylinders 3 and 7 so that they always rotate at the same peripheral speed.
  • the oscillating cylinder 7 is rotatably mounted on a support comprising a pair of parallel arms 8 between the ends of which extends the oscillating cylinder 7.
  • the parallel arms 8 are fixed radially at the two ends a hollow shaft 9, horizontal and transverse, passing coaxially right through the call cylinder 3.
  • the support of the oscillating cylinder 7 could comprise only one radial arm 8, the oscillating cylinder 7 then being mounted in cantilever on this single arm 8.
  • the call cylinder 3 is rotatably mounted on the hollow shaft 9 by means of bearings 11.
  • the hollow shaft 9 is itself mounted oscillating in the uprights of a frame 12, by means of bearings 13.
  • the hollow shaft 9 which carries the arms 8 and consequently the oscillating cylinder 7, is secured, at one of its ends, in this case at its straight end in FIG. 2, to a radial lever 14 by which an oscillating movement is transmitted to the arms 8.
  • a radial slide 15 On this lever 14 is fixed, in an adjustable longitudinal position, a radial slide 15, by means of screws 16.
  • a slide 17 which can be moved radially on needle shoes 18.
  • This slide 17 is integral with the lower end of a threaded rod 19 which extends along the slide 15 and the lever 14 and which is engaged, near the 'axis of oscillation of this lever 14, with a nut 21 itself secured to a coaxial toothed pulley 22 surrounding the upper part of the adjusting threaded rod 19.
  • This toothed pulley 22 is coupled, by means of a toothed belt 23 extending right through the hollow shaft 9, to another toothed pulley 24 located on the other side of the frame of the device and which can be driven in rotation by a suitable control mechanism not shown.
  • the slide 17 is integral with a horizontal and transverse axis 25 on which is articulated, by means of bearings 26, one end of a connecting rod 27.
  • the other end of the connecting rod 27 is articulated on a crank pin 28 itself same articulated, around an axis 29, on a drum 31 rotating around a horizontal and transverse axis 32, this drum 31 being driven from the general control C of the device.
  • the crank pin 28 carries, at its free end, two cam rollers 33, 34 which roll respectively, in two different transverse planes, inside a fixed cam 35 and outside a fixed cam follower 36 , these two cams having a profile calculated according to the desired law of motion.
  • the ply 1 passes at constant speed v between the call cylinder 3 and the upper counterpart cylinder 4, it is wound on a part of the peripheral surface of the call cylinder 3, then it passes around half of the peripheral surface of the oscillating cylinder 7, which rotates at the same peripheral speed v as the cylinder 3, due to their coupling by the two gears 5,6.
  • the ply rises to the left and passes over a part of the periphery of a suction cylinder or "sliding" cylinder 37 ensuring the permanent tensioning of the ply 1 before entry in the machine 2.
  • This suction cylinder 37 constantly rotates at a peripheral speed v t greater than that v of the sheet.
  • a suction box 38 connected to a source of vacuum.
  • This suction box 38 is in contact with a part of the internal surface of the cylinder 37 whose side surface is pierced with holes 39.
  • the position of the suction box 38 and its extension in the direction of rotation of the suction cylinder 37 correspond to the zone of contact of the ply on the peripheral surface of the suction cylinder 37.
  • the control mechanism of the oscillating cylinder 7 causes this cylinder to move down and to the right to lengthen the path of the sheet between the call cylinder 3 and the suction cylinder 37, because upstream the sheet 1 continues to be delivered at the same speed v.
  • the peripheral speed of the oscillating cylinder 7, which is rotated from the call cylinder 3 is equal to the peripheral speed of this call cylinder 3, that is to say at the natural speed of the ply 1, during this pivoting movement of the arms 8 down and downward of the oscillating cylinder 7, there is no sliding between the printed upper side of the ply 1 and the oscillating cylinder 7.
  • the oscillating cylinder 7 has an oscillating movement whose period corresponds to the intermittent advance cycle of the ply 1 in the shaping machine 2.
  • the pivoting movement of the arms 8 and of the oscillating cylinder 7 which they carry, around the axis of the call cylinder 3 is controlled by the rotation of the drum 31 which is rotated from the general control C.
  • the amplitude of the oscillation of the arms 8 and of the oscillating cylinder 7 which is a function of the format, depends on the distance between the axis 25 of articulation of the connecting rod 27 on the slide 17, and the axis of oscillation, that is to say the axis of the call cylinder 3.
  • This distance can be adjusted roughly, when the device is stopped, by adjusting the longitudinal position of the slide 15 on the lever 14 and by locking the slide 15 in the appropriate position, by means of the screws 16. Also the angular setting of the cams 35.36. To this coarse adjustment can be added a fine adjustment which can be carried out while the device is running. This fine adjustment is carried out, during operation, by rotating the driving pulley 24 which transmits its movement, by means of the toothed belt 23, to the other toothed pulley 22 itself secured to the nut 21 screwed on the threaded rod 19. The rotation of the nut 21 consequently results in a translation of the rod 19 and of the slide 17 which it carries.
  • the toothed belt 23 allows this fine adjustment to be carried out easily on the fact that it can be deformed to follow the oscillation movement of the arms 8. These fine adjustment means in operation also make it possible to optionally provide servo-control of the device. to any size, such as the web tension.
  • the driving pulley 24 can be coupled to the shaft of a servomotor 37 supplied electrically by a device 38 connected to a sensor 39 of the tension of the ply 1, of so as to rotate the driving pulley 24 and consequently modify the setting of the amplitude of oscillation as a function of the tension of the ply.
  • the oscillating cylinder 7 is mounted, on the arms 8, relatively distant from the call cylinder 3 which is in this case located above the ply 1 as the oscillating cylinder 7.
  • the two cylinders 7 and 3 are coupled by means of a transmission mechanism 41 ensuring the rotary drive of the oscillating cylinder 7 in the same direction and at the same peripheral speed as the call cylinder 3.
  • the transmission mechanism 41 may consist of a gear train, an endless toothed belt passing over two toothed wheels respectively secured to the two cylinders 3 and 7, etc.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (10)

1. Zuführungseinrichtung für eine Maschine (2) zur Bearbeitung einer Materialbahn (1) im Stillstand, insbesondere für eine Blattschneidepresse, bei welcher die Bahn vor der Maschine kontinuierlich angeliefert wird und durch ein sich berührendes Zugwalzen- (3) und Gegenwalzen- (4) Paar mit horizontalen und transversalen Achsen hindurchläuft, welche mit konstanter Umfangsgeschwindigkeit rotierend angetrieben werden, mit einer schwingenden walze (7), die in Laufrichtung der Bahn (1) hinter der Zugwalze (3) angeordnet und drehbar in einer Halterung (8, 9) gelagert ist, die um eine Achse schwingen kann, ferner mit einer Vorrichtung zum Erzeugen einer Schwingbewegung der Halterung (8, 9) und der walze (7), die sie trägt, mit einer Vorrichtung (37, 38), um die Bahn (1) gespannt zu halten am Einlaß der Maschine (2), und mit einer Vorrichtung zum zyklischen Steuern der Schwingbewegung der Halterung (8, 9) und der schwingenden walze (7) derart, daß die Länge des Abschnittes der Bahn (1) zwischen der Zugwalze (3) und der Maschine (2) verlängert oder verkürzt wird, um die gewünschten Bedingungen für die Zuführung der Bahn in die Maschine einschließlich insbesondere einer Phase des Stillstandes in der Maschine zu schaffen, dadurch gekennzeichnet, daß die schwingende walze (7) in der Nähe der Zugwalze (3) angeordnet ist, daß die Halterung (8, 9) der schwingenden walze (7) um die Achse der Zugwalze (3) schwingen kann, und daß die schwingende walze (7) für eine Rotation um sich selbst von der Zugwalze (3) über einen Getriebemechanismus (5, 6) derart angetrieben wird, daß die Geschwindigkeit des Umfanges der schwingenden walze (7) gleich der der Materialbahn (1) ist, die einen Teil des Umfanges der schwingenden walze (7) umschlingt und ständig ohne zu gleiten in Berührung mit der Oberfläche der schwingenden walze (7) steht.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zugwalze (3), die unter der Bahn (1) angeordnet ist, mit einem koaxialen Zahnrad (5) verbunden ist, das im Eingriff mit einem koaxialen, mit der sich oberhalb der Bahn befindenden schwingenden walze (7) verbundenden Zahnrad (6) steht, und daß das Verhältnis der Teilkreisdurchmesser der Zahnräder (5, 6) gleich dem Verhältnis der Durchmesser der walzen (3, 7) ist, mit denen sie verbunden sind, so daß die beiden walzen (3, 7) mit entgegengesetztem Drehsinn und gleicher Umfangsgeschwindigkeit rotierend angetrieben werden.
3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zugwalze (3), die über der Bahn (1) angeordnet ist, mit der gleichfalls über der Bahn (1) angeordneten schwingenden walze (7) über einen Getriebemechanismus (41) gekoppelt ist, der einen Antrieb der schwingenden walze (7) in gleichem Sinne und mit der gleichen Umfangsgeschwindigkeit wie die Zugwalze (3) gewährleistet.
4. Einrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Halterung der schwingenden walze (7) mindestens einen Arm (8) enthält, der mit einer horizontalen und transversalen Hohlwelle (9) verbunden ist, welche ihrerseits koaxial durch die Zugwalze (3) geht, daß die Zugwalze (3) durch wälzlager (11) drehbar auf der Hohlwelle (9) gelagert ist und daß die Hohlwelle (9) ihrerseits über wälzlager (13) schwenkbar in Ständern eines Gestelles (12) gelagert ist.
5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Hohlwelle (9) an ihrem einen Ende mit einem radialen Hebel (14) verstellbarer Länge verbunden ist, der an seinem Ende ein Gleitstück (17) trägt, das am Ende einer Pleuelstange (27) angelenkt ist, welche zu einer alternierenden Bewegung veranlaßt wird.
6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß auf dem Hebel (14) in einer in Längsrichtung verstellbaren Position eine radiale Kulisse (15) durch Schrauben (16) befestigt ist; daß am Ende dieser Kulisse (15) das Gleitstück (17) angeordnet ist, welches radial verlagert werden kann und mit dem unteren Ende einer Gewindestange (19) verbunden ist, die längs der Kulisse (15) sowie des Hebels (14) verläuft und in der Nähe der Schwingungsachse dieses Hebels (14) von einer Mutter (21) aufgenommen wird, welche mit einem koaxialen Zahnrad (22) verbunden ist, das über einen Zahnriemen (23), der sich durch die Hohlwelle (9) hindurch erstreckt, mit einem anderen, angetriebenen Zahnrad (24) gekoppelt ist, das sich auf der anderen Seite des Rahmens der Einrichtung befindet und das rotierend antreibbar ist.
7. Einrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das angetriebene Zahnrad (24) mit der welle eines Servomotors (37) eines Servomechanismus (38, 39) einer Größe, die etwa der Spannung der Bahn entspricht, angekoppelt ist.
8. Einrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß das Gleitstück (17) mit einer horizontalen und transversalen Achse (25) verbunden ist, an der das Ende der Pleuelstange (27) über wälzlager (26) angelenkt ist.
9. Einrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das andere Ende der Pleuelstange (27) an einer Kurbel (28) angelenkt ist, die seinerseits um eine Achse (29) schwenkbar an einer Trommel (31) gelagert ist, welche sich um eine horizontale und transversale Achse (32) dreht; daß die Kurbel (29) an ihrem freien Ende zwei Steuerrollen (33, 34) trägt, die jeweils auf zwei verschiedenen transversalen Flächen an der Innenseite eines festen Steuernockens (35) bzw. an der Außenseite eines festen Gegennockens (36) laufen.
10. Einrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorrichtung (37, 38), die die Spannung der Bahn (1) am Einlaß der Maschine (2) aufrecht hält, eine Saugwalze (37), welche dauernd mit einer Umfangsgeschwindigkeit (vt), die größer als die Geschwindigkeit (v) der Bahn ist, läuft und einen Saugkasten (38) in der Saugwalze (37) enthält, der mit einer Vakuumquelle verbunden ist und in Berührung mit einem Teil der Innenfläche der walze (37), deren Mantel von Löchern (39) durchsetzt ist, steht und daß die Position des Saugkastens (38) und seine Ausdehnung in Drehrichtung der Saugwalze (37) dem Berührungsbereich zwischen der Bahn und der Umfangsfläche des Saugwalze (37) entsprechen.
EP88401817A 1987-07-30 1988-07-12 Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse Expired - Lifetime EP0305230B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88401817T ATE72554T1 (de) 1987-07-30 1988-07-12 Periodische papierbahnzufuhr einer maschine, insbesondere fuer eine blattabschneidende presse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8710817 1987-07-30
FR8710817A FR2618770B1 (fr) 1987-07-30 1987-07-30 Dispositif d'alimentation pour une machine travaillant sur une nappe de materiau a l'arret, notamment pour une presse a decouper a plat

Publications (2)

Publication Number Publication Date
EP0305230A1 EP0305230A1 (de) 1989-03-01
EP0305230B1 true EP0305230B1 (de) 1992-02-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401817A Expired - Lifetime EP0305230B1 (de) 1987-07-30 1988-07-12 Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse

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Country Link
US (1) US4863086A (de)
EP (1) EP0305230B1 (de)
AT (1) ATE72554T1 (de)
DE (1) DE3868368D1 (de)
FR (1) FR2618770B1 (de)

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FR2672579B1 (fr) * 1991-02-11 1994-02-11 Komori Chambon Sa Dispositif d'alimentation pour une machine travaillant periodiquement sur une nappe de materiau a l'arret, notamment une presse a decouper a plat.
US5407513A (en) * 1993-10-14 1995-04-18 The Procter & Gamble Company Apparatus and process for cyclically accelerating and decelerating a strip of material
CH690101A5 (fr) * 1994-04-25 2000-04-28 Bobst Sa Station d'introduction d'une matière en bande délivrée en continu à une station la travaillant séquentiellement.
JP3285458B2 (ja) * 1994-12-26 2002-05-27 キヤノン株式会社 シート搬送装置およびシート搬送装置を有するプリンタ
CH690544A5 (fr) * 1995-05-08 2000-10-13 Bobst Sa Détecteur photoélectrique pour un dispositif de contrôle du registre dans une machine d'impression rotative.
CH690547A5 (fr) * 1995-05-08 2000-10-13 Bobst Sa Dispositif d'alimentation d'une bande dans une station la travaillant à l'arrêt, cette bande arrivant de manière continue.
US6050517A (en) * 1998-09-22 2000-04-18 Curt G. Joa Counterbalanced web accumulator
JP3925791B2 (ja) * 2002-03-08 2007-06-06 リコープリンティングシステムズ株式会社 印刷装置
US20070163718A1 (en) * 2004-03-05 2007-07-19 Masaki Nakakado Velocity-changing apparatus for web
KR100887771B1 (ko) 2007-06-25 2009-03-09 서성운 필름원단의 이완을 방지하는 롤러장치 및 이를 장착한롤원단 공급시스템
US8733222B2 (en) 2008-12-04 2014-05-27 Bobst Mex Sa Device for feeding a converting unit with a web substrate for a feeding station in a packaging production machine
US9073720B2 (en) 2008-12-08 2015-07-07 Bobst Mex Sa Arrangement for driving a flat substrate in a packaging production machine
TWI494261B (zh) 2010-07-14 2015-08-01 Bobst Sa 用於轉換網狀基材，進料站及包裝生產機之保護轉換單元的方法
CN106516841B (zh) * 2016-12-16 2018-03-06 常州数控技术研究所 能吸收张力波动的浮动辊机构
JP2018187809A (ja) * 2017-04-28 2018-11-29 株式会社ミマキエンジニアリング 印刷装置

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Also Published As

Publication number Publication date
US4863086A (en) 1989-09-05
EP0305230A1 (de) 1989-03-01
FR2618770A1 (fr) 1989-02-03
DE3868368D1 (de) 1992-03-26
FR2618770B1 (fr) 1990-01-05
ATE72554T1 (de) 1992-02-15

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