EP1569766B1 - Verfahren und vorrichtung zum walzen von metallbändern - Google Patents

Verfahren und vorrichtung zum walzen von metallbändern Download PDF

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Publication number
EP1569766B1
EP1569766B1 EP03759089A EP03759089A EP1569766B1 EP 1569766 B1 EP1569766 B1 EP 1569766B1 EP 03759089 A EP03759089 A EP 03759089A EP 03759089 A EP03759089 A EP 03759089A EP 1569766 B1 EP1569766 B1 EP 1569766B1
Authority
EP
European Patent Office
Prior art keywords
band
rolling
roller
rolling process
thickness
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
EP03759089A
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English (en)
French (fr)
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EP1569766A1 (de
Inventor
Cornelis Hendricus Maria Van Oirschot
Gerardus Jacobus Maria Braspenning
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.)
Bosch Transmission Technology BV
Original Assignee
Van Doornes Transmissie BV
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 Van Doornes Transmissie BV filed Critical Van Doornes Transmissie BV
Priority to EP07123271A priority Critical patent/EP1914028A3/de
Publication of EP1569766A1 publication Critical patent/EP1569766A1/de
Application granted granted Critical
Publication of EP1569766B1 publication Critical patent/EP1569766B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B5/00—Extending closed shapes of metal bands by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/14—Making other particular articles belts, e.g. machine-gun belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Definitions

  • the present invention relates to a process for rolling endless metal bands as defined in the preamble of claim 1. Such a process is known from JP-A-61-162216 .
  • the invention also relates to a device for carrying out the process.
  • Such bands form part of a generally known metal push belt, such as that for use in a continuously variable transmission, and is known, for example, from EP-A 0 950 830 .
  • a transmission is generally known and is used, inter alia, in passenger vehicles.
  • a band is used as part of a pulling element comprising a number of such bands nested concentrically.
  • the bands here are formed by rolling up a sheet part to form a tube and closing said tube by welding, from which tube a ring is subsequently separated off or cut. Finally, the ring is then rolled to a relatively low band thickness, which is desirable in order to obtain flexibility of the band and relatively low internal material stress when said band is subjected to a rotating movement over a bearing with a relatively small diameter.
  • the desired shape of the band is achieved specifically in a very accurate manner for each individual band of the pulling element.
  • the band After the rolling operation, the band generally undergoes a further number of processing or treatment steps before said band is ready for use in a push belt.
  • the Applicant has been rolling the metal bands by a method which has not changed since the Applicant's invention of the push belt in 1970, and the principle of which method was recently published in Japanese patent publication JP-11-290908 .
  • the necessity has arisen for an improvement in the principle of the rolling process and the rolling device, not least with a view to the quality requirements of a band in accordance with the present state of the art, but also in order to achieve an entirely modern process and corresponding device in which the years of experience of the Applicant, the requirements of a modern push belt and the advance in general development of the art are reflected.
  • the advance in the art of the push belt requires that the power to be transmitted per unit mass of the push belt be increased, so that for this also a technologically very advanced execution of each part of the production process of a push belt is desired.
  • One of the objects of the invention is therefore to achieve a high-grade process and device for producing rolled bands of relatively high quality, or at any rate of relatively great uniformity.
  • a band is rolled with specific process settings, which setting depend upon the material volume of the band to be rolled.
  • measurement for the material volume of the band to be rolled is determined, for example in an appropriate first measuring module of a device for rolling bands.
  • a volume determination is carried out as an arithmetic product of the width, the length and the thickness of the band to be rolled.
  • these parameters may already be known accurately beforehand. In the production process that has been developed by the Applicant over the years, this applies as regards the width and the length of the band, which in said process has in fact been produced from sheet material by means of a very accurately carried out welding and cutting process. Only the measured thickness of the band to be rolled is used as the measurement for the material volume. In this case account is taken of a possible variation in the uniformity of the thickness of the sheet material.
  • JP-A-61-162216 teaches a band rolling process, wherein the pulling force to be exterted on the band in a first phase of said rolling process is determined based on the two parameters of measured band thickness and measured band width, which pulling force is applied until immediately before the band reaches a target circumference length. Thereafter, in a second phase of the known rolling process, the band is accurately rolled towards such target length at a fixed and generally lower pulling force.
  • Figure 1 shows a rolling device that is illustrated diagrammatically in such a way that the rolling process used can also be seen from it.
  • the device comprises three rolling device parts or modules. The figure shows for this purpose, from right to left, a first measuring module 1, a roller module 2, and a second measuring module 3.
  • the rolling device and the rolling process are controlled by an electronic control unit, which is not further shown in the figure,
  • the band 10 in its initial state in other words before the rolling, is also sometimes indicated by the term ring, on account of its round, relatively rigid character. After rolling, the band is also sometimes indicated by the term belt because of its flexible character.
  • the measuring modules 1 and 3 comprise measuring rollers 4, 5 around which the band 10, rolled or otherwise, can be placed, in such a way that a measurement of the thickness D of band 10 can be carried out.
  • At least one of the rollers 4 or 5 is preferably drivable, so that the thickness measurement can be carried out at a number of positions around the circumference of the band 10 and an average value can be determined for it.
  • the abovementioned drivable roller 4 or 5 can preferably be moved away from the respective other roller 5 or 4, in which case the band is subjected to a tensile stress, which benefits the accuracy and in particular the reproducibility of the thickness measurement.
  • the thickness measurement can be carried out by means of a movement sensor DS accommodated between the measuring rollers 4, 5.
  • the thickness, or the average thickness, is a decisive measurement for the material volume of the band 10 to be rolled, and consequently for the process settings of the rolling process.
  • the abovementioned measurement for the material volume can be determined more accurately if the length and possibly also the width of the band to be rolled are likewise determined.
  • the length and width of the band 10 are assumed to be constant, which is quite possible in combination with the known method by which the bands to be rolled are produced.
  • a band is produced by rolling up sheet material to form a cylinder, welding together the sides of the sheet material that are then resting against each other, and cutting the tube created in this way into rings.
  • the roller module 2 comprises two rotatable bearing rollers 6, 7, a first roller 7 of which is placed centrally in the roller module 2, and a second roller 6 of which is accommodated in the roller module 2 in such a way that it is movable by the application of a pulling force Fm, Fl and around which the band 10 to be rolled can be placed.
  • the roller module 2 comprises first activation means 21, which in this exemplary embodiment comprise a motor M and a screw spindle S and can move a roller holder 8 with the second bearing roller 6 rotatably mounted on it relative to the first bearing roller 7.
  • a movement sensor LS is shown, by means of which sensor by way of a reference part 9 of the roller holder 8 the movement of the latter can be determined, and by means of which the length L of the rolled band 10 can also be determined.
  • the pulling force actually exerted can be measured by means of the load cell LC also shown.
  • the band length L obtained can be determined accurately with the aid of the movement sensor LS from the measured distance between the bearing rollers 6 and 7 and their diameters, by making said sensor rotate about the bearing rollers 6 and 7 without a rolling force Fu or pushing force Fu being exerted between the rolling roller 11 and the first bearing roller 7 in the process.
  • the measured band length L according to the invention can be advantageously used to optimize the rolling process settings by way of feedback, but can also serve as a control parameter for subsequent process steps to be carried out on the rolled band 10.
  • the roller module 2 further comprises a pair of supporting rollers 12, which act upon the first bearing roller 7, a rolling roller 11, and a pressure roller 13 acting upon the supporting rollers 12.
  • the supporting rollers 12 are each provided around their circumference with an opening through which they act upon the first bearing roller 7 only on either side next to the band 10.
  • the pressure roller 13 is accommodated in the roller module 2 in a movable manner under the influence of second activation means 22, which in this exemplary embodiment comprise a motor M and a screw spindle S, in such a way that a pushing or rolling force Fu can be exerted upon the supporting rollers 12, which pushing force Fu can be measured by way of a so-called load cell LC.
  • the pushing force exerted by the pressure roller 13 during the rolling operation is transmitted in a balanced and stable manner by way of the supporting rollers 12 to the bearing roller 7.
  • Said bearing roller 7 is subsequently supported again by way of a part of the band 10 on the rolling roller 11, which is supported by the pushing force Fu during the rolling operation by way of a reaction force Fr.
  • the band here is accommodated so that during the rolling process it rotates between the first bearing roller 7 and the rolling roller 11.
  • the rotating movement of the band 10 is achieved here by driving one or more of the abovementioned rollers 6, 7, 11, 12 and 13, as indicated by the arrows shown in them.
  • control unit determines a desired pulling force Fl and pushing force Fu for the band 10 concerned, which forces are to be applied during the rolling process by way of the activation means 21 or 22.
  • Figures 2, 3 and 4 show diagrammatically the movement towards each other or, conversely, the movement away from each other of the respective rollers 6, 7, 11, 12 and 13, for placing the band 10 in or removing it from the rolling device.
  • electronically controllable movement units are present in the rolling device, for example in the form of electro-hydraulic units or the electronically activated air cylinder AC shown in Figure 1 .
  • One of these in the present embodiment acts by way of a bearing arm upon the first bearing roller 7, so that the latter can move towards the supporting rollers 12, which is shown in Figure 2 .
  • the rolling process itself is primarily aimed at achieving a desired uniform band thickness D.
  • the rolling process is conceived as a displacement process in the case of which a material flow from the thickness D of the ring 10 is directed towards the length L and the width B of said ring.
  • the electronic control unit on the basis an algorithm suitable for the purpose and depending on the measurement for the volume of the band, determines the pushing force Fu and pulling force Fl exerted by the device upon the band 10.
  • the measure is taken to divide the bands 10 to be rolled into at least two rolling groups, which are distinguished by the band length L aimed at after rolling and for which the rolling process settings differ per rolling group.
  • bands 10 with a relatively great thickness D are placed in a first rolling group that is rolled out to a relatively great length L, and that bands 10 with a relatively low thickness D are placed in a second rolling group that is rolled out to a relatively small length L.
  • the rolling process settings are characterized in that for the first rolling group the ratio between the pulling force Fl and the pushing force Fu is selected at a higher level than is the case for the second rolling group.
  • the rolled bands in the pulling element of the push belt in which a number of bands 10 are nested concentrically in relation to one another, for which purpose said bands must be of different lengths.
  • Bands 10 from the second rolling group are then eminently suitable for nesting in the bands 10 of the first rolling group.
  • Different lengths L between the rolled bands 10 of the pulling element are therefore advantageous for nesting of said bands and according to the invention can also advantageously be used to reduce a variation in the width B of the bands 10 in the pulling element.
  • the number of different rolling groups to be defined is, of course, dependent here upon an envisaged maximum variation in the width B of said bands and on the number of bands 10 per pulling element.
  • the pushing force Fu and pulling force Fl to be exerted during the rolling process are regulated by the control unit by feedback from the actual forces exerted that have been measured with the aid of the load cells.
  • the quality of the rolling process is largely determined by the fact that it is controlled on the basis of the abovementioned forces Fl and Fu. This contrasts with a possible process control on the basis of the mutual position of the bearing rollers 6 and 7 and the of the rolling roller 11 and the central roller 7.
  • the band thickness D obtained after rolling can be measured with the aid of the second measuring module 3.
  • a thickness measurement is preferably carried out outside the roller module 2, in order to make efficient use of the device. By means of such a measurement it can be checked whether the selected rolling process setting is actually leading to the desired rolling result, and wear of, for example, the first bearing roller 7 can be detected.
  • the abovementioned reduction should be at least 10%, but should preferably be between 25% and 50%.
  • Such a rolling process has the advantage that in the main phase a considerable initial reduction in thickness of the band 10 can be achieved relatively quickly, although to some extent at the expense of the accuracy or stability of the end result of the process, while in the slow-down phase the desired thickness D of the band 10 is achieved accurately and in a stable manner, also uniformly distributed over the band length L.
  • the features of the rolling process including the reproducibility of the rolling result and the shortening of the cycle time t discussed above, are improved by a specific diameter ratio between the rolling roller 11 and the first bearing roller 7 between which the band 10 is rolled, with one of the rollers having to be considerably larger than the other, as shown in Figure 1 .
  • the diameter of the rolling roller 11 should be at least 3 times, but preferably approximately 4 times, the size of that of the first bearing roller 7.
  • Such diameter ratios have the additional advantage that the rolling roller 11 wears significantly less quickly, so that during operation in most cases only the bearing roller 7, which is relatively easy to remove and overhaul, needs to be replaced because of wear. There is consequently an advantageous effect on the production capacity and the maintenance costs of the rolling device.
  • Figure 6 shows diagrammatically a side view and a cross section of a rolled band 10.
  • the rolled band 10, viewed in cross section can be provided with an arch shape with a radius R.
  • the rolled band 10, viewed in cross section can be provided with a barrel shape, in other words a thickness D measured centrally on the band 10 is greater than a thickness A measured near the edges of the band 10.
  • the configuration of the present rolling device in particular the specified diameter ratio of the rolling roller 11 and the first bearing roller 7, is eminently suitable for obtaining the desired band shapes. It is also possible to obtain a desired shape of the cross section of the band 10 depending on the shape of at least one of the rollers 7, 11. For instance, it is advantageously possible, in particular in order to obtain the abovementioned barrel shape, to provide the respective roller 7 or 11 with a non-cylindrical shape, for example by narrowing said roller slightly from its edges towards a central point on the roller, in other words providing it with a concave, hourglass-like shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Press Drives And Press Lines (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Control Of Metal Rolling (AREA)

Claims (11)

  1. Verfahren zum Walzen eines in sich geschlossenen Endlosbands (10) für einen Metallschubriemen, wobei in einem ersten Verfahrensschritt das Band (10) in ungewalzter Form über mindestens zwei drehbare Tragrollen (6, 7) platziert wird, die bezüglich einander beweglich sind, in einem zweiten Schritt an der Stelle der ersten Tragrolle (7) das Band in Kontakt mit einer Walzrolle (11) gebracht wird, und in einem dritten Verfahrensschritt während einer durch mindestens eine der Rollen (6, 7, 11) angetriebenen Drehbewegung bei lokaler Ausübung einer Druckkraft (Fu) das Band durch Bewegung einer zweiten (6) der Tragrollen (6, 7) zwischen der erste Tragrolle (7) und der Walze (11) eingeführt wird, wobei das Band (10) durch Bewegung einer zweiten (6) der Tragrollen (6, 7) einer Zugkraft (F1) ausgesetzt wird, dadurch gekennzeichnet, dass der Walzprozess in Abhängigkeit von einem bestimmten oder gegebenen Maß für das Materialvolumen des Bands (10) gesteuert wird, wobei das Maß nur die Banddicke (D) davon betrifft, auf deren Basis eine spezielle Walzprozesseinstellung hinsichtlich mindestens der durch die zweite Tragrolle (6) auszuübenden Zugkraft (F1) und der zwischen der ersten Tragrolle (7) und der Walzrolle (11) auszuübenden Druckkraft (Fu) bestimmt wird, und dass die Zugkraft (F1) und die Druckkraft (Fu), die tatsächlich auf das Band (10) ausgeübt werden, gemessen und durch Rückkopplung so reguliert werden, dass sie mit der auszuübenden jeweiligen Kraft (F1, Fu) zusammenfallen.
  2. Walzverfahren nach Anspruch 1, dadurch gekennzeichnet, dass vor dem Walzprozess eine Messung an dem Band (10) durchgeführt wird, deren Ergebnis das oben erwähnte Maß für das Materialvolumen betrifft.
  3. Walzverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Walzprozess durch eine elektronische Steuereinheit gesteuert wird, wobei mindestens das Maß für das Materialvolumen des Bands (10) der Steuereinheit automatisch zugeführt wird und wobei letztere die Walzprozesseinstellung dann auf Grundlage eines in der Steuereinheit für diesen Zweck aufgezeichneten Algorithmus automatisch bestimmt.
  4. Walzverfahren nach einem der mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die auszuübende Zugkraft (F1) oder die auszuübende Druckkraft (Fu) zum Erhalt eines gewünschten Werts für zwei oder drei durch das Walzen zu beeinflussende Parameter ausgelegt ist, nämlich die Banddicke (D), die Bandlänge (L) und die Bandbreite (W), und angenommen wird, dass der dritten Parameter ein sich ergebender Wert ist.
  5. Walzverfahren nach Anspruch 4, dadurch gekennzeichnet, dass nach Beendigung des Walzprozesses zumindest die Banddicke (D) und vorzugsweise auch die Bandlänge (L) in einem nachfolgenden Schritt bestimmt wird.
  6. Walzverfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Banddicke (D) als ein Durchschnittswert mehrerer Dickenmessungen, die über die Längsrichtung des Bands (10) verteilt sind, bestimmt wird.
  7. Walzverfahren nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in Abhängigkeit von dem Maß für das Materialvolumen des Bands (10) die zu walzenden Bänder (10) in zwei oder mehr Walzgruppen unterteilt werden, wobei sich die Walzprozesseinstellungen pro Walzgruppe unterscheiden.
  8. Walzvorrichtung zur Durchführung eines Walzverfahrens wie in einem der vorhergehenden Ansprüche beschrieben, dadurch gekennzeichnet, dass die Vorrichtung mit einem von einem Walzmodul (2) getrennten ersten Messmodul (1) zur Durchführung einer automatischen Dickenmessung an einem zu walzenden Band (10) versehen ist.
  9. Walzvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Vorrichtung mit einem von dem Walzmodul (2) getrennten zweiten Messmodul (3) zur Durchführung einer automatischen Dickenmessung an einem gewalzten Band (10) versehen ist.
  10. Walzvorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass ein Messmodul (1, 3) mit zwei Messrollen (4, 5) versehen ist, von denen mindestens eine Messrolle (4, 5) antreibbar ist, insbesondere derart, dass durch Bewegung der antreibbaren Messrolle (4, 5) eine Zugspannung in dem Band (10) erreicht werden kann, und dass durch Drehung der antreibbaren Messrolle (4, 5) eine Positionsänderung des Bands (10) bezüglich einer in einer unbeweglichen Position eingerichteten Dickenaufzeichnungsvorrichtung erreicht werden kann, so dass an dem Band (10) automatisch mehrere verteilte Dickenmessungen durchgeführt werden können.
  11. Walzvorrichtung nach Anspruch 8, 9 oder 10,
    dadurch gekennzeichnet, dass die Vorrichtung mit einer Wägezelle (LC) zum Messen einer durch Aktivierungsmittel (M, S) ausgeübten aktuellen Druck- und/oder Zugkraft (F1, Fu) versehen ist, die auch in der Vorrichtung eingebaut ist, wobei diese Wägezelle (LC) mit einer zu der Vorrichtung gehörenden Steuereinheit, die die oben erwähnten Aktivierungsmittel (M, S) steuert, in Verbindung steht.
EP03759089A 2002-12-02 2003-10-29 Verfahren und vorrichtung zum walzen von metallbändern Expired - Lifetime EP1569766B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07123271A EP1914028A3 (de) 2002-12-02 2003-10-29 Vorrichtung zum Rollen von Metallbändern

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1022043 2002-12-02
NL1022043A NL1022043C2 (nl) 2002-12-02 2002-12-02 Proces en inrichting voor het walsen van metalen riemen.
PCT/NL2003/000734 WO2004050274A1 (en) 2002-12-02 2003-10-29 Process and a device for rolling metal bands

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP07123271A Division EP1914028A3 (de) 2002-12-02 2003-10-29 Vorrichtung zum Rollen von Metallbändern

Publications (2)

Publication Number Publication Date
EP1569766A1 EP1569766A1 (de) 2005-09-07
EP1569766B1 true EP1569766B1 (de) 2008-08-06

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EP03759089A Expired - Lifetime EP1569766B1 (de) 2002-12-02 2003-10-29 Verfahren und vorrichtung zum walzen von metallbändern
EP07123271A Withdrawn EP1914028A3 (de) 2002-12-02 2003-10-29 Vorrichtung zum Rollen von Metallbändern

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07123271A Withdrawn EP1914028A3 (de) 2002-12-02 2003-10-29 Vorrichtung zum Rollen von Metallbändern

Country Status (8)

Country Link
EP (2) EP1569766B1 (de)
JP (2) JP4856875B2 (de)
CN (2) CN100531951C (de)
AT (1) ATE403504T1 (de)
AU (1) AU2003274832A1 (de)
DE (1) DE60322739D1 (de)
NL (1) NL1022043C2 (de)
WO (1) WO2004050274A1 (de)

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JP3901111B2 (ja) * 2003-03-06 2007-04-04 トヨタ自動車株式会社 圧延装置および圧延方法
NL1024968C2 (nl) * 2003-12-08 2005-06-09 Bosch Gmbh Robert Werkwijze en inrichting voor het vormen van een oneindige metalen riem voorzien van een oppervlakteprofiel, profielrol daarvoor en een duwband voorzien van de oneindige metalen riem.
JP4933317B2 (ja) * 2007-03-20 2012-05-16 本田技研工業株式会社 金属リング加工方法及びその装置
CN102717012B (zh) * 2011-08-03 2014-10-22 程乃士 高效精密闭环轧机
JP6638639B2 (ja) 2016-12-19 2020-01-29 トヨタ自動車株式会社 差厚金属板の製造方法、プレス部品の製造方法及び加工機
CN113732629B (zh) * 2021-09-01 2023-05-02 浙江缙云韩立锯业有限公司 一种压力钢带的制造方法
CN113976636B (zh) * 2021-11-01 2024-04-16 沁阳市宏达钢铁有限公司 一种热轧螺纹钢的生产装置及方法

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JP2006507948A (ja) 2006-03-09
JP5167459B2 (ja) 2013-03-21
EP1914028A2 (de) 2008-04-23
DE60322739D1 (de) 2008-09-18
CN101219435B (zh) 2010-12-08
EP1914028A3 (de) 2008-06-11
CN1720113A (zh) 2006-01-11
JP2011062751A (ja) 2011-03-31
JP4856875B2 (ja) 2012-01-18
CN100531951C (zh) 2009-08-26
CN101219435A (zh) 2008-07-16
NL1022043C2 (nl) 2004-06-03
AU2003274832A1 (en) 2004-06-23
ATE403504T1 (de) 2008-08-15
WO2004050274A1 (en) 2004-06-17

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