EP2148751B1 - Method and device for bending sheet metal sections - Google Patents

Method and device for bending sheet metal sections Download PDF

Info

Publication number
EP2148751B1
EP2148751B1 EP08733799A EP08733799A EP2148751B1 EP 2148751 B1 EP2148751 B1 EP 2148751B1 EP 08733799 A EP08733799 A EP 08733799A EP 08733799 A EP08733799 A EP 08733799A EP 2148751 B1 EP2148751 B1 EP 2148751B1
Authority
EP
European Patent Office
Prior art keywords
rounding
sheet metal
measurement
machine
wedge
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.)
Active
Application number
EP08733799A
Other languages
German (de)
French (fr)
Other versions
EP2148751A1 (en
Inventor
Peter Schreiber
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.)
Soudronic AG
Original Assignee
Soudronic AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soudronic AG filed Critical Soudronic AG
Publication of EP2148751A1 publication Critical patent/EP2148751A1/en
Application granted granted Critical
Publication of EP2148751B1 publication Critical patent/EP2148751B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Definitions

  • the invention relates to a method for rounding of individual sheet metal sections to Be fiscalzargen blanks and a method for producing can bodies from individual sheet metal sections according to the preamble of claim 1 and 10. Further, the invention relates to a rounding machine for rounding individual Blechabschnitfe according to the preamble of claim 11 and a welder for can bodies with such a round machine.
  • Methods and apparatus of the type mentioned are used in the production of container frames, in particular can bodies, made of sheet metal.
  • the Be fiscalerzargen blanks are transported to the rounding directly into a welding machine for welding the longitudinal seam of the frame.
  • the stacking of the sheets, the round apparatus and the welding machine form a unit.
  • Corresponding plants for can production are for example DE-A-33 30 171 or off US-A-5,209,625 known.
  • the rounding takes place in such a way that the can body formed can be guided directly into the Z-rail used for the seam overlap.
  • the rectangular cut sheet metal sections with defined dimensions and material properties recorded in standards are moved from a slide-in system into a first, driven transport roller pair pushed by several driven transport rollers at a speed of 100-450m / min. transported further and bent in a round machine with a round system with the help of wedges with rollers or with roller systems to a round frame. It may also be done by means of a wedge system of an optional Flexerstation a previous plastic deformation, which serves to reduce the stress in the sheet before rounding.
  • Such circular machines or systems are known in the art.
  • the sheets processed in series have different sheet thicknesses and material properties, such as yield strength, elongation and solidification behavior, which lead to different frame diameters and thus different openings at the free ends after the rounding process. Since this is not all rounded in series frames in the same position in the round station and they have different rounding radii, this can have variations of the overlap in the welding station result, which is problematic for the welding of the frame, or problems in the lateral pushing out of Frames from the rounding machine in the welding device and thereby lead to a machine stop with longer downtime. The efficiency of the machine is thereby reduced and there are downtime costs for the machine operator.
  • EP-A-477752 known to measure the sheet thickness and / or the yield strength or yield strength and adjust the position of lateral rounding rolls. Furthermore, it is off DE-A-2 221 776 in the formation of threaded pipe tubes, it is known to measure the deformation resistance of the strip before the sheet metal strip enters the strip bending device, so that the return spring remains within admissible limits. In the rounding and welding of can bodies, which takes place at said very high speed, the procedures shown are not applicable. US 5,497,935 shows a generic method and such a device for rounding and welding of Be cumerzargen, wherein during the rounding measured the sheet thickness and the measured value is used to control the rounding means to keep the rounding radius as constant as possible.
  • This object is likewise achieved by a method for producing can bodies from individual sheet metal sections having the features of claim 10. This can be done in such a way that partial pre-rounding occurs on the feed line or that partial rounding takes place in the round machine, in particular in FIG the Flexerstation, and that the rounding behavior is measured electrically and / or mechanically and / or visually and / or acoustically.
  • the measurement in the rounding operation is carried out non-destructively on successive sheet metal sections, so that thus measured in the current rounding operation and according to the measurement, the rounding is set.
  • the rounding takes place in the formation of can bodies, and in particular at a speed of 100 to 450 m / minute and the rounded Be Strukturerzargen-blanks from the rounding machine of a welder for can bodies with welding rollers, especially with thereon running wire intermediate electrodes, and a Z-rail for positioning the Zargenkanten supplied.
  • the sheet thickness can be measured as the sheet property.
  • At least one of the round rollers of the round machine and / or a round wedge of the rounding machine is preferably controlled. It can additionally or alternatively be controlled by the measured value or the value derived therefrom a Vorrundkeil the rounding machine. Furthermore, by means of the measured value or the value derived therefrom, a flexer station of the round machine, in particular a flexi wedge arranged therein, can be controlled.
  • FIG. 1 shows schematically in side view various embodiments of the present invention. It can be seen that sheet metal sections, of which the sections 1 and 2 are shown as examples, are stacked by a stack 10 and placed in a transport device 3, which serves as a feed line for a rounding machine 4. Go through the sheets doing this arrangement of feed line and machine in the direction of arrow A.
  • the stacking of the stack 10 and the introduction into the transport device 3 is here, since this is known in the art, not further explained.
  • the transport device 3 is also considered to be optional, although preferred, so that the sheets could also be dispensed directly from the stack 10 into the rounding machine 4. This then requires that the measuring device, which is explained below, is positioned at the entrance of the rounding machine 4 or in this, which is also shown in more detail.
  • each sheet metal section is rounded to form a frame blank, as can be seen for the forward part of the sheet metal section 2 in the direction of passage.
  • the rounding is done with a predetermined by the setting of the rounding machine Sollrundungsradius and leads to the rounding radius R; this with a rounding speed VR of eg 100 to 450 m / minute.
  • Round machines are known in various embodiments, especially for can bodies, the round machine can be provided in a simple form as two-roll rounding machine with the two rollers 11 and 12. Also round machines with a plurality of rollers are known, such as from EP-A-1 197 272 , Also, such circular machines can be used in the context of the present invention, as well as basically any other circular machines; According to the invention, they must be controllable in their setting for determining the rounding in the rounding operation, as explained in more detail becomes.
  • a Vorrundkeil 14 may be provided in front of the round rollers 11 and 12.
  • a round wedge 13 may be provided after the round rollers 11, 12.
  • a flex station is provided in front of the actual run station, which in the embodiment shown is part of the round machine 4, which could also be a separate station.
  • the flexer station has the rollers 9 and 8 and the flexer wedge 7, which acts on the plate emerging from the rollers.
  • Flexerstations for the removal of stresses in the sheet metal are known as such in principle for the pretreatment of the sheet and to facilitate the subsequent rounding to the expert, for example from the above-mentioned US 5,209,625 , and are not explained here as such;
  • the measuring device described below can be arranged to determine the Rundungs s in the flexer station and use their preliminary rounding to determine the rounding behavior of the sheet, which will be explained in more detail.
  • the adjustable elements of the rotary machine and preferably also of the flexer station are provided with drives (referred to below as actuators) which can move these elements within the scope of their customary setting possibilities in order to allow the control of the round machine to influence the rounding result;
  • the influence of the actuators on the elements of the round machine is symbolized in the figures by outgoing arrows from the actuators in the respective element, the movement of the element by another arrow, the connection of the actuators with the controller 5 is symbolized by lines 40.
  • the flexi wedge 7 can be moved by the actuator 6 in the direction of arrow B.
  • the precut wedge 14 can be moved by the actuator 15 in the direction of the arrow C.
  • rollers 11 and 12 may be provided whose distance from one another determining drive, which acts on one or both of the rollers and which is shown schematically as an actuator 16. Furthermore, the actuator 17 can act on the circular wedge 13 in order to move it in the direction of the arrow D. All of these actuators may be provided or only one of them and any combinations are possible which allow the controller 5 of the rounding machine 4, via the control of the actuators and thus the setting of the moving rollers and / or round wedges, the rounding result or the rounding radius R directly in operation.
  • the design of the corresponding movement elements and drives can vary depending on the structural design of the rounding machine, but is readily apparent to those skilled in the art.
  • the actuators may be based on electromotive, magnetic, pneumatic, hydraulic or piezoelectric base to adjust the respective elements of the circular machine. This should, as mentioned, be possible during the operation of the rounding machine in order to cause a change in the radius of curvature between successive sheets, and preferably even during the rounding of a sheet, by the controller.
  • the rounding machine is usually operated in a for the sheet metal sections of the stack 10, which have certain sheet metal properties, suitable default setting, which leads to the desired rounding radius R in compliance with these sheet metal properties.
  • the controller 5 can operate at least one actuator based on the measurement in order to adapt the rounding properties to measured, changed sheet properties, so that in turn the rounding result with the desired rounding radius R is achieved. If only one of the actuators is present, for example, the actuator 17, which acts on the circular wedge 13, the change is easily performed by the controller 5 and this can be adjusted by a few test trials with sheets of different property or that the correct result is achieved for these different sheets.
  • the controller will react in accordance with the test tests and make the corresponding round wedge setting which is for desired rounding result for a sheet with this measured value leads. It can be seen that with the provision of several actuators and therefore several influencing possibilities, the complexity of the command variants stored in the controller 5 also increases, since these decide, for example, if the sheet metal characteristic changes, compliance with the desired radius R is achieved via the precut wedge 14 Actuator 15 is achieved, or more suitable via the actuator 16 and the roll adjustment. This can also be determined by test plates by the machine setter and the controller 5 can be set or programmed accordingly.
  • a measuring device for the sheet metal sections is provided by means of which at least one property of the respective sheet can be detected before rounding, so that the rounding machine for the rounding of this sheet is adjusted accordingly.
  • a procedure in which a measurement takes place in the rounding mode as will be explained below.
  • a measurement is made of at least one sheet metal property within the feed line 3, which is formed here by the transport device shown.
  • the sheet thus passes directly via a stacker from the stack 10 into the entry area 25 of the rounding machine, where it is detected and conveyed by the latter, then the measurement of the at least one sheet metal property takes place either at the stacker and / or directly at the entrance or in the rounding machine 4, in particular in the flexer station.
  • the expert can readily arrange the measuring devices described below so that they are not, as shown, in the feed line 3, but at the stacker and / or at the entrance of the rounding machine or in the rounding machine, especially in a flexer station.
  • FIGS. 4 and 5 Such an example is in the FIGS. 4 and 5 shown.
  • a measuring device 27 is shown, which lies between the roller pairs 21, 22 and 23, 24. This measuring device is connected to the control device 5, so that the measured value or a derived value indicating the sheet properties can be delivered to the controller 5.
  • a measuring device 28 may be provided which measures the sheet thickness of the respective sheet metal section in a manner known in principle to those skilled in the art. Such sheet thickness gauges are also known and commercially available and will not be discussed further here.
  • the output value of the sheet thickness measurement is fed to the controller 5 and is there also for adjusting at least one of Control in this way reaches the measured value or the measured values or correspondingly derived values, which allows the setting of at least one of the actuators.
  • a measuring device 27 is shown, which lies between the roller pairs 21, 22 and 23, 24.
  • the measuring device 27 is connected to the control device 5, so that the measured value or a derived value indicating the sheet properties can be delivered to the controller 5.
  • the measuring device 27 is a device which allows the measurement of the strength of the respective sheet metal section, in the figure of the sheet metal section 1.
  • this is a non-contact measuring method.
  • a well-known non-contact measurement method which is applied to steel strips, and is now applied to individual sheet metal sections, based on a periodic magnetization of the metal and the subsequent measurement of the gradient of the residual magnetic field strength on the top and bottom of the band or here the section.
  • the measured value of the residual magnetic field strength or the calculated gradient is associated with the mechanical strength of the sheet metal section via correlation relationships, which in particular includes the tensile strength and the yield strength of the respective metal sheet.
  • a measuring device is known under the brand IMPOC ® and commercially available and manufactured by the company EMG Automation GmbH, Wenden, Germany and distributed. With such a measuring device, the strength properties of the sheet metal sections can be determined, which have a direct influence on the Rundungseigenschaften, and the corresponding measured value is delivered to the controller 5, which in particular increase or decrease the strength values against a preset setpoint or setpoint range at least one of the actuators operated in order to adapt the rounding machine to the changed strength values during operation.
  • the controller 5 for this sheet metal section 1, for example, the actuator 17 for the Press round wedge 13 and possibly also the actuator 15 for the Vorrundkeil 14 after the previous sheet metal section 2 has left the round rollers 11,12, so that the rounding behavior of the circular machine is adapted to the opposite to the sheet 2 different strength property of the sheet 1, so that in turn the desired radius of curvature R results when the sheet 1 passes through the rounding machine.
  • the subsequent and further subsequent sheet-metal sections are moved, so that, if necessary, an adaptation results for each sheet-metal section during operation.
  • a measuring device 28 may be provided which measures the sheet thickness of the respective sheet metal section in a manner known in principle to those skilled in the art. Such sheet thickness gauges are also known and commercially available and will not be discussed further here.
  • the output value of the sheet thickness measurement is fed to the controller 5 and is there also for adjusting at least one of Actuators used to adapt the rounding machine 4 to the sheet property "thickness".
  • the controller 5 influences the rounding machine 4 via the actuators, possibly including the flexer station.
  • a preliminary rounding is provided in this embodiment, in which a part of the sheet metal section is rounded and the current behavior of this sheet metal section is measured to this rounding.
  • the rollers 30 and 31 may be provided, which is usually a wedge 32 upstream.
  • the rollers are operated by an arrangement, not shown, so that they cause a rounding only for a part of the sheet metal section, preferably for a front portion, as shown in the figure.
  • the sheet metal section can subsequently also be bent straight again.
  • three different possible rounding curves of a sheet with a, b and c are indicated and shown with different line representation in the figure.
  • a measuring arrangement 33 to 35 can be determined how the sheet metal section behaves in this rounding.
  • a plurality of sensors 34 may be arranged in a linear sequence in the direction of sheet travel. These sensors may be mechanically responsive to touch or may be electrical sensors responsive to the electrical conductivity of the sheet. In particular, it may be electrical contacts, as with the example of the FIGS.
  • the sensors can also be optical sensors, for example light barriers or acoustic sensors, for example ultrasonic distance sensors.
  • it can be determined by the sensors at which place of impact 35, or at which impact time, the leading edge of the sheet 1 impinges on the sensor assembly, which is a measure of the rounding behavior of the respective sheet, or the curve a or b or c.
  • the shape of the rounded region a, b or c can also be determined directly.
  • the thus measured rounding behavior of the sheet in the preliminary rounding is fed to the control 5 as a measured value or derived value and serves there to set at least one of the actuators.
  • the actuator 6 and a single actuator 15 ' which symbolizes the adjustment of both the Vorrundkeils 14 and at least one of the rollers 11, 12 and the adjustment of the inclination of the rollers.
  • a wedge 13 with associated actuator could also be provided here.
  • the measuring device 33 could additionally one or both at FIG. 1 be described measuring devices 27, 28 may be provided.
  • the measuring device 33 in the execution after FIG. 1 be provided or within the rounding machine 4, for example in the flexer station of the same.
  • FIG. 3 shows an embodiment in which the above statements also apply and like reference numerals again denote the same or similar elements.
  • a wedge 36 is additionally provided analogous to the flexor of the flexer station in the measuring device 33.
  • This wedge 36 influences the pre-round measurement in much the same way as the flex wedge affects the rounding, so that the measurement of the rounding property is better adapted to the subsequent rounding. Accordingly, the flexer wedge 36 is preferably adjusted by an actuator and the controller 5.
  • the corresponding measuring device 50 can, as for the previously described measuring devices 27 or 33 to 35 or 33 to 36 the case is to be arranged in the feed line 3. However, it can also be arranged in the actual rotary apparatus, in particular between the flexer station with the rollers 8, 9 and the flexer wedge 7; but then it is preferably a part of the flexer station or arranged in this. Thus, the illustrated rollers 28 and 29 of the measuring device instead of the rollers 8 and 9 of the flexer station of the rotary apparatus occur or instead of the rollers 31 and 30 in the feed 3.
  • the rolls 41 and 42 are the round rolls (corresponding to the round rolls 11 and 12 of the preceding examples) and thus the previously described elements or wedges 14 and 13 thereof could be arranged before and after the round rolls 41, 42, respectively FIG. 4 is indicated only with the rectangles 13 and 14. Other placements before the round apparatus 4 or in this are of course possible.
  • the measuring device 50 has a flexing wedge 37. If the measuring device is thus used in accordance with the measuring device 33 to 36 in the feed section 3, then this flexer wedge 37 can be adjusted as the flexer wedge 7 in the round apparatus.
  • the flexing wedge 37 of the measuring device also directly assumes the function of the flexer wedge 7 of the rotary apparatus according to the previous examples, so that the rounding behavior is measured with a flexer wedge.
  • the measuring device 50 could also do without its flexer wedge 37.
  • the measuring device has at least one sensor 45, with which the arrival of the respective sheet metal 1 at or in the measuring device 50 can be detected.
  • the front edge of the sheet in the transport direction is detected, in particular by an optical sensor, in particular a light barrier or a plurality of light barriers. This detection of the sheet 1 starts at the measuring device 50 a time measurement.
  • FIG. 4 This can be done by a separate time measuring means or by the controller 5, which has already been mentioned, and which in this case also controls or is part of the measuring device.
  • This variant is in FIG. 4 shown.
  • the time measurement is terminated when the leading edge of the sheet strikes a measuring plate 38, which is reported via a line to the controller 5.
  • the time is different according to the rounding behavior and thus represents a measure of the rounding behavior of the sheet.
  • the round apparatus is thus subsequently controlled accordingly, as has already been described.
  • this this is indicated by the wiring harness 40, which leads from the controller 5 in the manner described above to the above-explained actuators of the rounding machine for influencing the rounding behavior.
  • the detection of the impact of the leading edge of the sheet on the measuring plate 38 of the measuring device 50 is preferably carried out electrically. This can be done so that the measuring plate is at a first electrical potential and at least one of the rollers 28, 29 is at a different electrical potential (and, if present, the flexing wedge 27 of the measuring device is at the electric potential of the roller). If the leading edge of the electrically conductive sheet meets the measuring plate 38, the two potentials are short-circuited, which can be determined by a corresponding current flow or a corresponding voltage drop of the measuring voltage. Thus, the time measurement is stopped or the time between detection of the leading edge by the sensor 45 and the impact of the leading edge on the measuring plate 38 is determined and thus the rounding of the sheet in the measuring device 50.
  • the measuring plate 38 is preferred with a A plurality of electrically insulated from each other, juxtaposed measuring parts 38a, 38b, 38c, 38d, etc. executed, which are also alternately on the different electrical potentials.
  • the impact on the measuring plate 38 can be electrically detected
  • These parts can be designed wedge-shaped, as in FIGS. 4 and 5 seen.
  • FIG. 5 shows some of the adjacent measuring wedges in a diagrammatic representation.
  • FIG. 6 shows a corresponding measuring circuit with a measuring voltage source U s , wherein the rollers 28, 29 and the flexing wedge 37 are at ground potential. Also at ground potential are the measuring wedges 38b, 38d, etc. (in FIG. 6 for simplicity, only 38b is shown). On the other hand, the measuring wedges 38a, 38c, etc. (in FIG. 6 only 38a is shown).
  • the method and the device are used in particular for the welding of can bodies.

Abstract

During the bending of sheet metal sections (1, 2) for forming can bodies by means of a bending machine, the sheet metal characteristics of the individual sheets are measured, e.g. the thickness and/or the strength of the sheets. The measured value is used to control the bending machine (4). This permits a substantially constant bending result to be achieved, even with varying sheet metal characteristics.

Description

Hintergrundbackground

Die Erfindung betrifft ein Verfahren zum Runden von einzelnen Blechabschnitten zu Behälterzargen-Rohlingen sowie ein Verfahren zur Herstellung von Dosenzargen aus einzelnen Blechabschnitten gemäß dem oberbegriff des Anspruchs 1 bzw. 10. Ferner betrifft die Erfindung eine Rundmaschine zur Rundung einzelner Blechabschnitfe gemäß dem Oberbegriff des Anspruchs 11 sowie eine Schweissvorrichtung für Dosenzargen mit einer solchen Rundmaschine.The invention relates to a method for rounding of individual sheet metal sections to Behälterzargen blanks and a method for producing can bodies from individual sheet metal sections according to the preamble of claim 1 and 10. Further, the invention relates to a rounding machine for rounding individual Blechabschnitfe according to the preamble of claim 11 and a welder for can bodies with such a round machine.

Stand der TechnikState of the art

Verfahren und Vorrichtungen der genannten Art werden bei der Herstellung von Behälterzargen, insbesondere Dosenzargen, aus Blech verwendet. Die Behälterzargen-Rohlinge werden dazu nach der Rundung direkt in eine Schweissmaschine zur Schweissung der Längsnaht der Zarge transportiert. Dabei bilden in der Regel die Abstapelung der Bleche, der Rundapparat und die Schweissmaschine eine Einheit. Entsprechende Anlagen für die Dosenherstellung sind z.B. aus DE-A-33 30 171 oder aus US-A-5 209 625 bekannt. Die Rundung erfolgt dabei so, dass die gebildete Dosenzarge direkt in die für die Nahtüberlappung verwendete Z-Schiene geführt werden kann. Für die Rundung werden die rechteckig zugeschnittenen Blechabschnitte mit definierten Abmessungen und in Normen festgehaltenen Materialeigenschaften von einem Einschubsystem in ein erstes, angetriebenes Transportwalzenpaar geschoben, von mehreren angetriebenen Transportwalzen mit einer Geschwindigkeit von 100-450m/Min. weitertransportiert und in einer Rundmaschine mit einem Rundsystem mit Hilfe von Keilen mit Walzen oder mit Walzensystemen zu einer runden Zarge gebogen. Eventuell erfolgt zusätzlich mittels eines Keilsystems einer optionalen Flexerstation eine vorgängige plastische Verformung, welche dem Spannungsabbau im Blech vor der Rundung dient. Derartige Rundmaschinen bzw. Anlagen sind dem Fachmann bekannt. Je nach Blechqualität weisen die in Serie verarbeiteten Bleche unterschiedliche Blechdicken und Materialeigenschaften, wie Streckgrenze, Dehnungs- und Verfestigungsverhalten auf, welche nach dem Rundprozess zu unterschiedlichen Zargendurchmessern und dadurch unterschiedlichen Öffnungen an den freien Enden führen. Da dadurch nicht alle in Serie gerundeten Zargen in der gleichen Position in der Rundstation liegen und sie unterschiedliche Rundungsradien aufweisen, kann dies Variationen des Überlappungsmasses in der Schweissstation zur Folge haben, was für die Schweissung der Zarge problematisch ist, oder zu Problemen beim seitlichen Ausschieben der Zargen aus der Rundmaschine in die Schweisseinrichtung und dadurch zu einem Maschinenstopp mit längeren Ausfallzeiten führen. Die Effizienz der Maschine wird dadurch vermindert und es entstehen Ausfallkosten für den Maschinenbetreiber.Methods and apparatus of the type mentioned are used in the production of container frames, in particular can bodies, made of sheet metal. The Behälterzargen blanks are transported to the rounding directly into a welding machine for welding the longitudinal seam of the frame. As a rule, the stacking of the sheets, the round apparatus and the welding machine form a unit. Corresponding plants for can production are for example DE-A-33 30 171 or off US-A-5,209,625 known. The rounding takes place in such a way that the can body formed can be guided directly into the Z-rail used for the seam overlap. For rounding, the rectangular cut sheet metal sections with defined dimensions and material properties recorded in standards are moved from a slide-in system into a first, driven transport roller pair pushed by several driven transport rollers at a speed of 100-450m / min. transported further and bent in a round machine with a round system with the help of wedges with rollers or with roller systems to a round frame. It may also be done by means of a wedge system of an optional Flexerstation a previous plastic deformation, which serves to reduce the stress in the sheet before rounding. Such circular machines or systems are known in the art. Depending on the sheet metal quality, the sheets processed in series have different sheet thicknesses and material properties, such as yield strength, elongation and solidification behavior, which lead to different frame diameters and thus different openings at the free ends after the rounding process. Since this is not all rounded in series frames in the same position in the round station and they have different rounding radii, this can have variations of the overlap in the welding station result, which is problematic for the welding of the frame, or problems in the lateral pushing out of Frames from the rounding machine in the welding device and thereby lead to a machine stop with longer downtime. The efficiency of the machine is thereby reduced and there are downtime costs for the machine operator.

Bei der vergleichsweise sehr langsamen Bildung von einzelnen Rohren oder Körpern aus einem vom Operateur in eine Rundmaschine eingebrachtem Blech ist es aus EP-A-477 752 bekannt, die Blechdicke und/oder die Streckgrenze oder Dehngrenze zu messen und die Position von seitlichen Rundungswalzen anzupassen. Ferner ist es aus DE-A-2 221 776 bei der Bildung von Schraubennahtrohren bekannt, vor dem Eintritt des Blechbandes in die Bandbiegeeinrichtung den Verformungswiderstand des Bandes zu messen, damit das Rückfedermass innerhalb zulässiger Grenzen bleibt. Bei der Rundung und Schweissung von Dosenzargen, die mit der genannten sehr hohen Geschwindigkeit erfolgt, sind die gezeigten Vorgehensweisen nicht anwendbar. US 5 497 935 zeigt ein gattungsgemässes Verfahren bzw. eine solche Vorrichtung zum Runden und Schweissen von Behälterzargen, wobei bei der Rundung die Blechdicke gemessen und der Messwert zur Steuerung der Rundungsmittel verwendet wird, um den Rundungsradius möglichst konstant zu halten.In the comparatively very slow formation of individual tubes or bodies from a sheet introduced by the surgeon in a rounding machine, it is out EP-A-477752 known to measure the sheet thickness and / or the yield strength or yield strength and adjust the position of lateral rounding rolls. Furthermore, it is off DE-A-2 221 776 in the formation of threaded pipe tubes, it is known to measure the deformation resistance of the strip before the sheet metal strip enters the strip bending device, so that the return spring remains within admissible limits. In the rounding and welding of can bodies, which takes place at said very high speed, the procedures shown are not applicable. US 5,497,935 shows a generic method and such a device for rounding and welding of Behälterzargen, wherein during the rounding measured the sheet thickness and the measured value is used to control the rounding means to keep the rounding radius as constant as possible.

Darstellung der ErfindungPresentation of the invention

Zur Vermeidung der genannten Probleme beim Runden und Schweissen von Dosenzargen werden heute möglichst Bleche mit geringen Materialeigenschaftsschwankungen und möglichst aus einer Herstellungsserie des Blechherstellers verwendet. Eine Durchmischung verschiedener Bleche wird möglichst vermieden. Die Rundung muss häufig überprüft und bei Bedarf das Rundsystem nachjustiert werden.To avoid the problems mentioned in the rounding and welding of can bodies are today as possible plates with low material property fluctuations and possibly used from a production series of the sheet metal manufacturer. A thorough mixing of different sheets is avoided as possible. The rounding must be checked frequently and the round system readjusted if necessary.

Es ist Aufgabe der Erfindung, diese Nachteile zu vermeiden.It is an object of the invention to avoid these disadvantages.

Dies wird durch ein Verfahren zum Runden von einzelnen Blechabschnitten zu einzelnem Behälterzargen-Rohlingen mit dem Merkwalen des Anspruchs 1 erreicht. Diese Aufgabe wird ebenfalls durch ein Verfahren zur Herstellung von Dosenzargen aus einzelnen Blechabschnitten mit den Merkmalen des Anspruchs 10 gelöst. Dies kann derart erfolgen, dass auf der Zuführstrecke eine teilweise Vorrundung erfolgt oder dass in der Rundmaschine eine teilweise Vorrundung erfolgt, insbesondere in der Flexerstation, und dass das Rundungsverhalten elektrisch und/oder mechanisch und/oder optisch und/oder akustisch gemessen wird.This is achieved by a method for rounding individual sheet metal sections to individual container frame blanks with the Merkwalen of claim 1. This object is likewise achieved by a method for producing can bodies from individual sheet metal sections having the features of claim 10. This can be done in such a way that partial pre-rounding occurs on the feed line or that partial rounding takes place in the round machine, in particular in FIG the Flexerstation, and that the rounding behavior is measured electrically and / or mechanically and / or visually and / or acoustically.

Die oben genannte Aufgabe wird durch eine Rundmaschine mit dem Merkmalen des Anspruchs 11 gelöst.The above object is achieved by a rounding machine with the features of claim 11.

Bei dem Verfahren bzw. einer Vorrichtung wird die Messung im Rundungsbetrieb zerstörungsfrei an nacheinander folgenden Blechabschnitten durchgeführt, so dass also im laufenden Rundungsbetrieb gemessen und entsprechend der Messung die Rundung eingestellt wird. Die Rundung erfolgt bei der Bildung von Dosenzargen und insbesondere mit einer Geschwindigkeit von 100 bis 450 m/Minute und die gerundeten Behälterzargen-Rohlinge werden aus der Rundmaschine einer Schweissvorrichtung für Dosenzargen mit Schweissrollen, insbesondere mit darauf laufenden Drahtzwischenelektroden, und einer Z-Schiene zur Positionierung der Zargenkanten zugeführt. Dabei kann als Blecheigenschaft die Blechdicke gemessen werden.In the method or a device, the measurement in the rounding operation is carried out non-destructively on successive sheet metal sections, so that thus measured in the current rounding operation and according to the measurement, the rounding is set. The rounding takes place in the formation of can bodies, and in particular at a speed of 100 to 450 m / minute and the rounded Behälterzargen-blanks from the rounding machine of a welder for can bodies with welding rollers, especially with thereon running wire intermediate electrodes, and a Z-rail for positioning the Zargenkanten supplied. In this case, the sheet thickness can be measured as the sheet property.

Durch den Messwert oder den davon abgeleiteten Wert wird mindestens eine der Rundwalzen der Rundmaschine und/oder wird vorzugsweise ein Rundkeil der Rundmaschine gesteuert. Es kann zusätzlich oder alternativ durch den Messwert oder den davon abgeleiteten Wert ein Vorrundkeil der Rundmaschine gesteuert werden. Weiter kann durch den Messwert oder den davon abgeleiteten Wert eine Flexerstation der Rundmaschine, insbesondere ein darin angeordneter Flexerkeil, gesteuert werden.By the measured value or the value derived therefrom, at least one of the round rollers of the round machine and / or a round wedge of the rounding machine is preferably controlled. It can additionally or alternatively be controlled by the measured value or the value derived therefrom a Vorrundkeil the rounding machine. Furthermore, by means of the measured value or the value derived therefrom, a flexer station of the round machine, in particular a flexi wedge arranged therein, can be controlled.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Ausgestaltungen, Vorteile und Anwendungen der Erfindung ergeben sich aus den abhängigen Ansprüchen und aus der nun folgenden Beschreibung anhand der Figuren. Dabei zeigt

  • Figur 1 schematisch eine Vorrichtung zur Erläuterung erster Ausführungsformen der Erfindung;
  • Figur 2 schematisch eine Vorrichtung zur Erläuterung weiterer Ausführungsformen der Erfindung;
  • Figur 3 schematisch eine Ausführung ähnlich derjenigen von Figur 2 mit einem Keil bei der Messeinrichtung;
  • Figur 4 eine schematische Darstellung einer Messeinrichtung;
  • Figur 5 eine perspektivische teilweise Darstellung der Messeinrichtung von Figur 4; und
  • Figur 6 eine Darstellung der elektrischen Beschaltung der Messeinrichtung der Figuren 4 und 5.
Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to FIGS. It shows
  • FIG. 1 schematically an apparatus for explaining first embodiments of the invention;
  • FIG. 2 schematically an apparatus for explaining further embodiments of the invention;
  • FIG. 3 schematically an embodiment similar to that of FIG. 2 with a wedge at the measuring device;
  • FIG. 4 a schematic representation of a measuring device;
  • FIG. 5 a perspective partial view of the measuring device of FIG. 4 ; and
  • FIG. 6 a representation of the electrical wiring of the measuring device of FIGS. 4 and 5 ,

Wege zur Ausführung der ErfindungWays to carry out the invention

Figur 1 zeigt schematisch in Seitenansicht verschiedene Ausführungsformen der vorliegenden Erfindung. Dabei ist ersichtlich, dass Blechabschnitte, von denen als Beispiele die Abschnitte 1 und 2 dargestellt sind, von einem Stapel 10 abgestapelt und in eine Transporteinrichtung 3 gegeben werden, welche als Zuführstrecke für eine Rundmaschine 4 dient. Die Bleche durchlaufen dabei diese Anordnung aus Zuführstrecke und Maschine in Richtung des Pfeils A. Die Abstapelung vom Stapel 10 und das Einbringen in die Transporteinrichtung 3 wird hier, da dies dem Fachmann bekannt ist, nicht näher erläutert. Die Transporteinrichtung 3 ist ferner als fakultativ, wenn auch bevorzugt, anzusehen, so dass die Bleche auch direkt vom Stapel 10 in die Rundmaschine 4 abgegeben werden könnten. Dies bedingt dann, dass die Messeinrichtung, welche nachfolgend erläutert wird, am Eingang der Rundmaschine 4 oder in dieser positioniert ist, was ebenfalls noch näher dargestellt wird. Eine Anordnung der Messeinrichtung in der Rundmaschine 4 oder an deren Eingang ist natürlich auch möglich, wenn eine Transporteinrichtung 3 vorhanden ist. In der dargestellten Ausführungsform ist die Transporteinrichtung 3 mit mehreren Walzenpaaren 19, 20; 21, 22 und 23, 24 ausgerüstet, welche den jeweiligen Blechabschnitt an den Eingang 25 der Rundmaschine 4 fördern. Diese Förderung könnte auch auf andere, dem Fachmann bekannte Weise ausgeführt werden, als mit den dargestellten Walzenpaaren. In der Rundmaschine 4 wird jeder Blechabschnitt zu einem Zargen-Rohling gerundet, wie dies für den in Durchlaufrichtung vorderen Teil des Blechabschnitts 2 ersichtlich ist. Die Rundung erfolgt dabei mit einem durch die Einstellung der Rundmaschine vorgegebenen Sollrundungsradius und führt zum Rundungsradius R; dies mit einer Rundungsgeschwindigkeit VR von z.B. 100 bis 450 m/Minute. Rundmaschinen sind in vielfältiger Ausführungsform bekannt, insbesondere auch für Dosenzargen, wobei die Rundmaschine in einfacher Form als Zweiwalzen-Rundmaschine mit den beiden Walzen 11 und 12 vorgesehen sein kann. Auch Rundmaschinen mit einer Mehrzahl von Walzen sind bekannt, so z.B. aus der EP-A-1 197 272 . Auch derartige Rundmaschinen können im Rahmen der vorliegenden Erfindung verwendet werden, wie auch grundsätzlich beliebige andere Rundmaschinen; gemäss der Erfindung müssen sie in ihrer Einstellung zur Festlegung der Rundung im Rundungsbetrieb steuerbar sein, wie dies noch näher erläutert wird. Im vorliegenden Ausführungsbeispiel ist gezeigt, dass vor den Rundwalzen 11 und 12 ein Vorrundkeil 14 vorgesehen sein kann. Ebenso kann ein Rundkeil 13 nach den Rundwalzen 11, 12 vorgesehen sein. Weiter ist es möglich und auch bevorzugt, dass vor der eigentlichen Run- , dungsstation eine Flexerstation vorgesehen ist, welche in der gezeigten Ausführungsform Teil der Rundmaschine 4 ist, welche aber auch eine separate Station sein könnte. In dem gezeigten Beispiel weist die Flexerstation die Walzen 9 und 8 auf sowie den Flexerkeil 7, welcher auf das aus den Walzen austretende Blech einwirkt. Flexerstationen zur Entfernung von Spannungen im Blech sind als solche grundsätzlich zur Vorbehandlung des Bleches und zur Erleichterung der nachfolgenden Rundung dem Fachmann bekannt, z.B. aus der eingangs erwähnten US 5,209,625 , und werden hier als solche nicht weiter erläutert; indes kann die nachfolgend beschriebene Messeinrichtung zur Ermittlung des Rundungsverhaltens in der Flexerstation angeordnet sein und deren Vorrundung zur Ermittlung des Rundungsverhaltens des Bleches verwenden, was noch genauer erläutert wird. FIG. 1 shows schematically in side view various embodiments of the present invention. It can be seen that sheet metal sections, of which the sections 1 and 2 are shown as examples, are stacked by a stack 10 and placed in a transport device 3, which serves as a feed line for a rounding machine 4. Go through the sheets doing this arrangement of feed line and machine in the direction of arrow A. The stacking of the stack 10 and the introduction into the transport device 3 is here, since this is known in the art, not further explained. The transport device 3 is also considered to be optional, although preferred, so that the sheets could also be dispensed directly from the stack 10 into the rounding machine 4. This then requires that the measuring device, which is explained below, is positioned at the entrance of the rounding machine 4 or in this, which is also shown in more detail. An arrangement of the measuring device in the rounding machine 4 or at the entrance is of course also possible if a transport device 3 is present. In the illustrated embodiment, the transport device 3 with a plurality of roller pairs 19, 20; 21, 22 and 23, 24 equipped, which promote the respective sheet metal section to the input 25 of the rounding machine 4. This promotion could also be carried out in other ways known to the person skilled in the art, than with the illustrated roller pairs. In the rounding machine 4, each sheet metal section is rounded to form a frame blank, as can be seen for the forward part of the sheet metal section 2 in the direction of passage. The rounding is done with a predetermined by the setting of the rounding machine Sollrundungsradius and leads to the rounding radius R; this with a rounding speed VR of eg 100 to 450 m / minute. Round machines are known in various embodiments, especially for can bodies, the round machine can be provided in a simple form as two-roll rounding machine with the two rollers 11 and 12. Also round machines with a plurality of rollers are known, such as from EP-A-1 197 272 , Also, such circular machines can be used in the context of the present invention, as well as basically any other circular machines; According to the invention, they must be controllable in their setting for determining the rounding in the rounding operation, as explained in more detail becomes. In the present embodiment, it is shown that a Vorrundkeil 14 may be provided in front of the round rollers 11 and 12. Likewise, a round wedge 13 may be provided after the round rollers 11, 12. Further, it is possible and also preferred that a flex station is provided in front of the actual run station, which in the embodiment shown is part of the round machine 4, which could also be a separate station. In the example shown, the flexer station has the rollers 9 and 8 and the flexer wedge 7, which acts on the plate emerging from the rollers. Flexerstations for the removal of stresses in the sheet metal are known as such in principle for the pretreatment of the sheet and to facilitate the subsequent rounding to the expert, for example from the above-mentioned US 5,209,625 , and are not explained here as such; However, the measuring device described below can be arranged to determine the Rundungsverhaltens in the flexer station and use their preliminary rounding to determine the rounding behavior of the sheet, which will be explained in more detail.

Die einstellbaren Elemente der Rundmaschine und vorzugsweise auch der Flexerstation sind mit Antrieben versehen (nachfolgend Aktoren genannt), welche diese Elemente im Rahmen ihrer üblichen Einstellmöglichkeiten bewegen können, um der Steuerung der Rundmaschine einen Einfluss auf das Rundungsergebnis zu ermöglichen; der Einfluss der Aktoren auf die Elemente der Rundmaschine ist in den Figuren durch von den Aktoren ausgehende Pfeile in das jeweilige Element symbolisiert, die Bewegung des Elementes durch einen weiteren Pfeil, die Verbindung der Aktoren mit der Steuerung 5 ist durch Leitungen 40 symbolisiert. So kann der Flexerkeil 7 durch den Aktor 6 in Richtung des Pfeils B bewegt werden. Der Vorrundkeil 14 kann durch den Aktor 15 in Richtung des Pfeils C bewegt werden. Für die Walzen 11 und 12 kann ein deren Abstand zueinander bestimmender Antrieb vorgesehen sein, welche auf eine oder auf beide der Walzen wirkt und welcher als Aktor 16 schematisch dargestellt ist. Ferner kann der Aktor 17 auf den Rundkeil 13 einwirken, um diesen im Sinne des Pfeiles D zu bewegen. Es können alle diese Aktoren vorgesehen sein oder nur einer derselben und beliebige Kombinationen sind möglich, welche es der Steuerung 5 der Rundmaschine 4 erlauben, über die Ansteuerung der Aktoren und damit die Einstellung der dadurch bewegten Walzen und/oder Rundkeile das Rundungsergebnis bzw. den Rundungsradius R im Betrieb direkt zu beeinflussen. Die Ausgestaltung der entsprechenden Bewegungselemente und Antriebe kann je nach konstruktivem Aufbau der Rundmaschine variieren, ist aber für den Fachmann ohne weiteres ersichtlich. Die Aktoren können auf elektromotorischer, magnetischer, pneumatischer, hydraulischer oder auf piezoelektrischer Basis beruhen, um die jeweiligen Elemente der Rundmaschine zu verstellen. Dies soll, wie erwähnt, während des Betriebes der Rundmaschine möglich sein, um zwischen aufeinander folgenden Blechen, und vorzugsweise sogar bei der Rundung eines Bleches, durch die Steuerung eine Änderung des Rundungsradius zu bewirken. Die Rundmaschine wird dabei in der Regel in einer für die Blechabschnitte des Stapels 10, welche bestimmte Blecheigenschaften aufweisen, geeigneten Grundeinstellung betrieben, welche bei der Einhaltung diese Blecheigenschaften zu dem gewünschten Rundungsradius R führt. Liegen abweichende Blecheigenschaften vor, welche gemäss der Erfindung gemessen werden, was noch erläutert wird, so kann die Steuerung 5 aufgrund der Messung mindestens einen Aktor bedienen, um die Rundungseigenschaften an gemessene, veränderte Blecheigenschaften anzupassen, so dass wiederum das Rundungsergebnis mit dem gewünschten Rundungsradius R erzielt wird. Ist nur einer der Aktoren vorhanden, z.B. der Aktor 17, welcher auf den Rundkeil 13 einwirkt, so ist die Änderung durch die Steuerung 5 einfach vollziehbar und diese kann durch wenige Testversuche mit Blechen unterschiedlicher Eigenschaft so eingestellt bzw. programmiert werden, dass für diese unterschiedlichen Bleche das korrekte Resultat erzielt wird. Wird dann bei der Messung im Betrieb erkannt, dass ein Blech mit einem Messwert vorliegt, der einem vorgängig gespeicherten Wert entspricht oder in einem vorgängig gespeicherten Wertebereich für den Messwert liegt, so wird die Steuerung entsprechend den Testversuchen reagieren und die entsprechende Rundkeileinstellung vornehmen, die zum gewünschten Rundungsergebnis für ein Blech mit diesem Messwert führt. Es ist ersichtlich, dass mit dem Vorsehen von mehreren Aktoren und daher mehreren Einflussmöglichkeiten auch die Komplexität der in der Steuerung 5 abgelegten Befehlsvarianten steigt, da diese z.B. entscheiden, ob bei sich ändernder Blecheigenschaft die Einhaltung des gewünschten Radius R über den Vorrundkeil 14 bzw. den Aktor 15 erzielt wird, oder geeigneter über den Aktor 16 und die Walzenverstellung. Auch dies kann durch Testbleche durch den Maschineneinrichter ermittelt werden und die Steuerung 5 kann entsprechend eingestellt bzw. programmiert werden. Dasselbe gilt für die Variante, bei welcher auch der Flexerkeil 7 mittels eines Aktors einstellbar ist. Da die mittels der entsprechenden Elemente 7, 14, 11 und 12 oder gegebenenfalls 13 erzielbaren Effekte dem Fachmann für Rundmaschinen bekannt sind, kann er ohne weiteres die Steuerung entsprechend programmieren, damit sie die Änderungen, die er in bekannter Weise durch Einstellung ausserhalb des Betriebes (offline) für eine bestimmte Blecheigenschaft durchführen würde, auch innerhalb des Betriebes (online) durch die Aktoren durchführen kann.The adjustable elements of the rotary machine and preferably also of the flexer station are provided with drives (referred to below as actuators) which can move these elements within the scope of their customary setting possibilities in order to allow the control of the round machine to influence the rounding result; the influence of the actuators on the elements of the round machine is symbolized in the figures by outgoing arrows from the actuators in the respective element, the movement of the element by another arrow, the connection of the actuators with the controller 5 is symbolized by lines 40. Thus, the flexi wedge 7 can be moved by the actuator 6 in the direction of arrow B. The precut wedge 14 can be moved by the actuator 15 in the direction of the arrow C. For the rollers 11 and 12 may be provided whose distance from one another determining drive, which acts on one or both of the rollers and which is shown schematically as an actuator 16. Furthermore, the actuator 17 can act on the circular wedge 13 in order to move it in the direction of the arrow D. All of these actuators may be provided or only one of them and any combinations are possible which allow the controller 5 of the rounding machine 4, via the control of the actuators and thus the setting of the moving rollers and / or round wedges, the rounding result or the rounding radius R directly in operation. The design of the corresponding movement elements and drives can vary depending on the structural design of the rounding machine, but is readily apparent to those skilled in the art. The actuators may be based on electromotive, magnetic, pneumatic, hydraulic or piezoelectric base to adjust the respective elements of the circular machine. This should, as mentioned, be possible during the operation of the rounding machine in order to cause a change in the radius of curvature between successive sheets, and preferably even during the rounding of a sheet, by the controller. The rounding machine is usually operated in a for the sheet metal sections of the stack 10, which have certain sheet metal properties, suitable default setting, which leads to the desired rounding radius R in compliance with these sheet metal properties. If deviating sheet properties are present, which are measured according to the invention, as will be explained, the controller 5 can operate at least one actuator based on the measurement in order to adapt the rounding properties to measured, changed sheet properties, so that in turn the rounding result with the desired rounding radius R is achieved. If only one of the actuators is present, for example, the actuator 17, which acts on the circular wedge 13, the change is easily performed by the controller 5 and this can be adjusted by a few test trials with sheets of different property or that the correct result is achieved for these different sheets. If, during the measurement in the factory, it is detected that a metal sheet with a measured value corresponds to a previously stored value or lies in a previously stored value range for the measured value, the controller will react in accordance with the test tests and make the corresponding round wedge setting which is for desired rounding result for a sheet with this measured value leads. It can be seen that with the provision of several actuators and therefore several influencing possibilities, the complexity of the command variants stored in the controller 5 also increases, since these decide, for example, if the sheet metal characteristic changes, compliance with the desired radius R is achieved via the precut wedge 14 Actuator 15 is achieved, or more suitable via the actuator 16 and the roll adjustment. This can also be determined by test plates by the machine setter and the controller 5 can be set or programmed accordingly. The same applies to the variant in which also the flexer wedge 7 is adjustable by means of an actuator. Since the effects obtainable by means of the corresponding elements 7, 14, 11 and 12 or optionally 13 are known to the person skilled in the art of circular machines, he can readily program the control accordingly so that they can readjust the changes he has made in a known manner by setting them outside the operation. offline) for a particular sheet metal property could also perform within the operation (online) by the actuators.

Gemäss Ausführungsbeispielen der Erfindung ist eine Messeinrichtung für die Blechabschnitte vorgesehen, mittels welcher vor dem Runden mindestens eine Eigenschaft des jeweiligen Bleches erfasst werden kann, so dass die Rundmaschine für das Runden dieses Bleches entsprechend eingestellt wird. Erfindungsgemäss ist ein Vorgehen, bei welchem eine Messung im Rundungsbetrieb erfolgt, wie dies nachfolgend erläutert wird. Bei den gezeigten Ausführungsformen, sowohl von Figur 1 als auch von Figur 2 oder 3, erfolgt eine Messung mindestens einer Blecheigenschaft innerhalb der Zufuhrstrecke 3, welche hier von der gezeigten Transporteinrichtung gebildet wird. Entfällt eine solche Zufuhrstrecke, gelangt das Blech also direkt über einen Abstapler vom Stapel 10 in den Eingangsbereich 25 der Rundmaschine, wo es von dieser erfasst und weitergefördert wird, so erfolgt die Messung der mindestens einen Blecheigenschaft entweder beim Abstapler und/oder direkt beim Eingang oder in der Rundmaschine 4, insbesondere in der Flexerstation. Dazu kann der Fachmann die nachfolgend beschriebenen Messeinrichtungen ohne weiteres so anordnen, dass diese nicht, wie gezeigt, in der Zufuhrstrecke 3 liegen, sondern beim Abstapler und/oder beim Eingang der Rundmaschine oder in der Rundmaschine, insbesondere in einer Flexerstation derselben. Ein solches Beispiel ist in den Figuren 4 und 5 dargestellt. Im gezeigten Beispiel von Figur 1 ist eine Messeinrichtung 27 dargestellt, welche zwischen den Walzenpaaren 21, 22 und 23, 24 liegt. Diese Messeinrichtung ist mit der Steuereinrichtung 5 verbunden, so dass der Messwert oder ein abgeleiteter Wert der die Blecheigenschaften angibt, an die Steuerung 5 abgegeben werden kann.According to embodiments of the invention, a measuring device for the sheet metal sections is provided by means of which at least one property of the respective sheet can be detected before rounding, so that the rounding machine for the rounding of this sheet is adjusted accordingly. According to the invention, a procedure in which a measurement takes place in the rounding mode, as will be explained below. At the shown Embodiments, both of FIG. 1 as well as from FIG. 2 or 3 , a measurement is made of at least one sheet metal property within the feed line 3, which is formed here by the transport device shown. If there is no such supply line, the sheet thus passes directly via a stacker from the stack 10 into the entry area 25 of the rounding machine, where it is detected and conveyed by the latter, then the measurement of the at least one sheet metal property takes place either at the stacker and / or directly at the entrance or in the rounding machine 4, in particular in the flexer station. For this purpose, the expert can readily arrange the measuring devices described below so that they are not, as shown, in the feed line 3, but at the stacker and / or at the entrance of the rounding machine or in the rounding machine, especially in a flexer station. Such an example is in the FIGS. 4 and 5 shown. In the example shown by FIG. 1 a measuring device 27 is shown, which lies between the roller pairs 21, 22 and 23, 24. This measuring device is connected to the control device 5, so that the measured value or a derived value indicating the sheet properties can be delivered to the controller 5.

Zusätzlich zu der Messeinrichtung 27 und der weiteren, noch zu erläuternden Messeinrichtungen der Beispiele gemäss den Figuren 2 bis 6, kann eine Messeinrichtung 28 vorgesehen sein, welche auf grundsätzlich dem Fachmann bekannte Weise die Blechdicke des jeweiligen Blechabschnittes misst. Solche Blechdicken-Messgeräte sind ebenfalls bekannt und handelsüblich und werden hier nicht weiter erläutert. Der Ausgangswert der Blechdickenmessung wird der Steuerung 5 zugeführt und wird dort ebenfalls zur Einstellung mindestens eines der Steuerung auf diese Weise zu dem Messwert oder den Messwerten oder entsprechend abgeleiteten Werten gelangt, welche die Einstellung mindestens eines der Aktoren erlaubt. Im gezeigten Beispiel von Figur 1 ist eine Messeinrichtung 27 dargestellt, welche zwischen den Walzenpaaren 21, 22 und 23, 24 liegt. Diese Messeinrichtung ist mit der Steuereinrichtung 5 verbunden, so dass der Messwert oder ein abgeleiteter Wert der die Blecheigenschaften angibt, an die Steuerung 5 abgegeben werden kann. Bevorzugt ist die Messeinrichtung 27 eine Einrichtung, welche die Messung der Festigkeit des jeweiligen Blechabschnittes, in der Figur des Blechabschnittes 1, erlaubt. Zum Beispiel handelt es sich dabei um ein berührungslos arbeitendes Messverfahren. Ein bekanntes berührungsloses Messverfahren, welches bei Stahlbändern angewendet wird, und hier neu für einzelne Blechabschnitte angewendet wird, basiert auf einer periodischen Magnetisierung des Metalls und der anschliessenden Messung des Gradienten der magnetischen Restfeldstärke auf der Oberseite und der Unterseite des Bandes bzw. hier des Abschnittes. Der gemessene Wert der magnetischen Restfeldstärke bzw. dem berechneten Gradienten wird über Korrelationsbeziehungen die mechanische Festigkeit des Blechabschnittes zugeordnet, welche insbesondere die Zugfestigkeit und die Streckgrenze des jeweiligen Bleches umfasst. Eine solche Messeinrichtung ist unter der Marke IMPOC® bekannt und im Handel erhältlich und wird von der Firma EMG Automation GmbH, Wenden, Deutschland hergestellt und vertrieben. Mit einer solchen Messeinrichtung lassen sich die Festigkeitseigenschaften der Blechabschnitte ermitteln, welche direkt einen Einfluss auf die Rundungseigenschaften haben, und der entsprechende Messwert wird an die Steuerung 5 abgegeben, welche insbesondere bei Erhöhung oder Erniedrigung der Festigkeitswerte gegenüber einem voreingestellten Sollwert oder Sollwertbereich mindestens einen der Aktoren bedient, um die Rundmaschine an die veränderten Festigkeitswerte im Betrieb anzupassen. Weicht somit der gemessene Festigkeitswert für den Blechabschnitt 1 von einem voreingestellten Sollwert oder Sollwertbereich ab und liegt bei einem anderen voreingestellten Wert oder Wertebereich, für den die Steuerung Anweisungen zur Einstellung der Rundmaschine besitzt, so wird die Steuerung 5 für diesen Blechabschnitt 1 z.B. den Aktor 17 für den Rundkeil 13 und allenfalls auch den Aktor 15 für den Vorrundkeil 14 betätigen, nachdem der vorherige Blechabschnitt 2 die Rundwalzen 11,12 verlassen hat, so dass das Rundungsverhalten der Rundmaschine an die gegenüber dem Blech 2 unterschiedliche Festigkeitseigenschaft des Bleches 1 angepasst ist, so dass wiederum der gewünschte Rundungsradius R resultiert, wenn das Blech 1 die Rundmaschine durchläuft. Ebenso wird mit dem nachfolgenden und weiteren nachfolgenden Blechabschnitten verfahren, so dass sich im Betrieb, sofern nötig, eine Anpassung für jeden Blechabschnitt ergibt. Anstelle des erwähnten Produktes INPOC® ist auch ein handelsübliches Produkt 3R-AQC der Firma 3R Technics GmbH, Zürich, Schweiz anwendbar, welches ebenfalls Blecheigenschaften berührungs- und zerstörungsfrei misst, indem durch eine Messspule Wirbelströme im Blech erzeugt und diese wiederum gemessen werden. Aus der Wirbelstrommessung können ebenfalls über Korrelation die mechanischen Festigkeitseigenschaften, wie Härte, Zugfestigkeit, Streckgrenze, des Bleches gemessen werden.In addition to the measuring device 27 and the other, still to be explained measuring devices of the examples according to the FIGS. 2 to 6 , a measuring device 28 may be provided which measures the sheet thickness of the respective sheet metal section in a manner known in principle to those skilled in the art. Such sheet thickness gauges are also known and commercially available and will not be discussed further here. The output value of the sheet thickness measurement is fed to the controller 5 and is there also for adjusting at least one of Control in this way reaches the measured value or the measured values or correspondingly derived values, which allows the setting of at least one of the actuators. In the example shown by FIG. 1 a measuring device 27 is shown, which lies between the roller pairs 21, 22 and 23, 24. This measuring device is connected to the control device 5, so that the measured value or a derived value indicating the sheet properties can be delivered to the controller 5. Preferably, the measuring device 27 is a device which allows the measurement of the strength of the respective sheet metal section, in the figure of the sheet metal section 1. For example, this is a non-contact measuring method. A well-known non-contact measurement method, which is applied to steel strips, and is now applied to individual sheet metal sections, based on a periodic magnetization of the metal and the subsequent measurement of the gradient of the residual magnetic field strength on the top and bottom of the band or here the section. The measured value of the residual magnetic field strength or the calculated gradient is associated with the mechanical strength of the sheet metal section via correlation relationships, which in particular includes the tensile strength and the yield strength of the respective metal sheet. Such a measuring device is known under the brand IMPOC ® and commercially available and manufactured by the company EMG Automation GmbH, Wenden, Germany and distributed. With such a measuring device, the strength properties of the sheet metal sections can be determined, which have a direct influence on the Rundungseigenschaften, and the corresponding measured value is delivered to the controller 5, which in particular increase or decrease the strength values against a preset setpoint or setpoint range at least one of the actuators operated in order to adapt the rounding machine to the changed strength values during operation. Dodges thus the measured strength value for the sheet metal section 1 from a preset setpoint or setpoint range and is at another preset value or range for which the controller has instructions for setting the rounding machine, the controller 5 for this sheet metal section 1, for example, the actuator 17 for the Press round wedge 13 and possibly also the actuator 15 for the Vorrundkeil 14 after the previous sheet metal section 2 has left the round rollers 11,12, so that the rounding behavior of the circular machine is adapted to the opposite to the sheet 2 different strength property of the sheet 1, so that in turn the desired radius of curvature R results when the sheet 1 passes through the rounding machine. Likewise, the subsequent and further subsequent sheet-metal sections are moved, so that, if necessary, an adaptation results for each sheet-metal section during operation. Instead of the mentioned product INPOC ®, a commercially available product 3R-AQC the company 3R Technics GmbH, Zurich, Switzerland is applicable, which is also contact-sheet properties and non-destructively measures by generated by a measuring coil eddy currents in the plate, and these are again measured. From the eddy current measurement can also be measured by correlation, the mechanical strength properties, such as hardness, tensile strength, yield strength of the sheet.

Zusätzlich oder anstelle der Messeinrichtung 27 und der weiteren, noch zu erläuternden Messeinrichtungen der Beispiele gemäss den Figuren 2 bis 6, kann eine Messeinrichtung 28 vorgesehen sein, welche auf grundsätzlich dem Fachmann bekannte Weise die Blechdicke des jeweiligen Blechabschnittes misst. Solche Blechdicken-Messgeräte sind ebenfalls bekannt und handelsüblich und werden hier nicht weiter erläutert. Der Ausgangswert der Blechdickenmessung wird der Steuerung 5 zugeführt und wird dort ebenfalls zur Einstellung mindestens eines der Aktoren verwendet, um die Rundmaschine 4 an die Blecheigenschaft "Dicke" anzupassen.Additionally or instead of the measuring device 27 and the other, still to be explained measuring devices of the examples according to the FIGS. 2 to 6 , a measuring device 28 may be provided which measures the sheet thickness of the respective sheet metal section in a manner known in principle to those skilled in the art. Such sheet thickness gauges are also known and commercially available and will not be discussed further here. The output value of the sheet thickness measurement is fed to the controller 5 and is there also for adjusting at least one of Actuators used to adapt the rounding machine 4 to the sheet property "thickness".

Die Figuren 2 und 3 zeigen weitere Ausführungsformen, bei welcher gleiche Bezugszeichen wiederum gleiche Elemente bezeichnen. Sämtliche Erwägungen, welche für die Ausführungsformen der Figur 1 gemacht worden sind, gelten ebenfalls für die Ausführungsformen der Varianten gemäss den Figuren 2 und 3. Auch hier beeinflusst die Steuerung 5 über die Aktoren die Rundmaschine 4, ggf. inklusive der Flexerstation. Als Messeinrichtung ist bei dieser Ausführungsform eine Vorrundung vorgesehen, bei welcher ein Teil des Blechabschnittes gerundet wird und das aktuelle Verhalten dieses Blechabschnittes auf diese Vorrundung gemessen wird. Für die Vorrundung können z.B. die Walzen 30 und 31 vorgesehen sein, welchen in der Regel ein Keil 32 vorgeschaltet ist. Die Walzen werden durch eine nicht dargestellte Anordnung so betrieben, dass sie eine Rundung nur für einen Teil des Blechabschnittes bewirken, vorzugsweise für einen vorderen Abschnitt, wie in der Figur dargestellt. Der Blechabschnitt kann nachfolgend auch wieder gerade gebogen werden. In der Figur sind drei verschiedene mögliche Rundungsverläufe eines Bleches mit a, b und c bezeichnet und mit verschiedener Strichdarstellung in der Figur dargestellt. Durch eine Messanordnung 33 bis 35 kann ermittelt werden, wie sich der Blechabschnitt bei dieser Messrundung verhält. Dazu können z.B. mehrere Sensoren 34 in linearer Abfolge in Blechdurchlaufrichtung angeordnet sein. Diese Sensoren können mechanisch auf Berührung reagieren oder können elektrische Sensoren sein, die auf Grund der elektrischen Leitfähigkeit des Bleches ansprechen. Insbesondere können es elektrische Kontakte sein, wie dies auch anhand des Beispiels der Figuren 4 bis 6 noch näher erläutert wird. Die Sensoren können auch optische Sensoren sein, z.B. Lichtschranken oder akustische Sensoren, z.B. Ultraschallabstandssensoren. Durch die Sensoren kann insbesondere festgestellt werden, an welcher Auftreffstelle 35, oder zu welcher Auftreffzeit, die Vorderkante des Bleches 1 auf die Sensorenanordnung auftrifft, was ein Mass für das Rundungsverhalten des jeweiligen Bleches, bzw. den Verlauf a oder b oder c darstellt. Optisch, durch Bildverarbeitung oder akustisch mit Abstandsmessung kann auch direkt die Form des gerundeten Bereichs a, b oder c bestimmt werden. Das so gemessene Rundungsverhalten des Bleches in der Vorrundung wird der Steuerung 5 als Messwert oder abgeleiteter Wert zugeführt und dient dort zur Einstellung mindestens eines der Aktoren. Es ist in diesem Ausführungsbeispiel ebenfalls der Aktor 6 und ein einzelner Aktor 15' gezeigt, der die Einstellung sowohl des Vorrundkeils 14 als auch mindestens einer der Walzen 11, 12 symbolisiert bzw. die Einstellung der Schrägstellung der Walzen. Natürlich könnte auch hier ein Keil 13 mit zugehörigem Aktor vorgesehen sein. Neben der Messeinrichtung 33 könnte zusätzlich eine oder könnten beide der bei Figur 1 geschilderten Messeinrichtungen 27, 28 vorgesehen sein. Ebenso könnte die Messeinrichtung 33 bei der Ausführung nach Figur 1 vorgesehen sein oder innerhalb der Rundmaschine 4, z.B. in der Flexerstation derselben. Figur 3 zeigt eine Ausführungsform, bei welcher die obigen Ausführungen ebenfalls gelten und gleiche Bezugszeichen wiederum gleiche oder ähnliche Elemente bezeichnen. Bei dieser Ausführungsform ist bei der Messeinrichtung 33 zusätzlich ein Keil 36 analog dem Flexerkeil der Flexerstation vorgesehen. Dieser Keil 36 beeinflusst die Vorrundungsmessung ähnlich wie der Flexerkeil die Rundung beeinflusst, so dass dadurch die Messung der Rundungseigenschaft besser an die spätere Rundung angepasst ist. Entsprechend wird auch der Flexerkeil 36 vorzugsweise durch einen Aktor und die Steuerung 5 eingestellt.The Figures 2 and 3 show further embodiments in which like reference numerals again denote like elements. All considerations, which for the embodiments of the FIG. 1 have also been made for the embodiments of the variants according to the Figures 2 and 3 , Here too, the controller 5 influences the rounding machine 4 via the actuators, possibly including the flexer station. As a measuring device, a preliminary rounding is provided in this embodiment, in which a part of the sheet metal section is rounded and the current behavior of this sheet metal section is measured to this rounding. For the pre-rounding, for example, the rollers 30 and 31 may be provided, which is usually a wedge 32 upstream. The rollers are operated by an arrangement, not shown, so that they cause a rounding only for a part of the sheet metal section, preferably for a front portion, as shown in the figure. The sheet metal section can subsequently also be bent straight again. In the figure, three different possible rounding curves of a sheet with a, b and c are indicated and shown with different line representation in the figure. By a measuring arrangement 33 to 35 can be determined how the sheet metal section behaves in this rounding. For this purpose, for example, a plurality of sensors 34 may be arranged in a linear sequence in the direction of sheet travel. These sensors may be mechanically responsive to touch or may be electrical sensors responsive to the electrical conductivity of the sheet. In particular, it may be electrical contacts, as with the example of the FIGS. 4 to 6 will be explained in more detail. The sensors can also be optical sensors, for example light barriers or acoustic sensors, for example ultrasonic distance sensors. In particular, it can be determined by the sensors at which place of impact 35, or at which impact time, the leading edge of the sheet 1 impinges on the sensor assembly, which is a measure of the rounding behavior of the respective sheet, or the curve a or b or c. Optically, by image processing or acoustically with distance measurement, the shape of the rounded region a, b or c can also be determined directly. The thus measured rounding behavior of the sheet in the preliminary rounding is fed to the control 5 as a measured value or derived value and serves there to set at least one of the actuators. It is also shown in this embodiment, the actuator 6 and a single actuator 15 ', which symbolizes the adjustment of both the Vorrundkeils 14 and at least one of the rollers 11, 12 and the adjustment of the inclination of the rollers. Of course, a wedge 13 with associated actuator could also be provided here. In addition to the measuring device 33 could additionally one or both at FIG. 1 be described measuring devices 27, 28 may be provided. Likewise, the measuring device 33 in the execution after FIG. 1 be provided or within the rounding machine 4, for example in the flexer station of the same. FIG. 3 shows an embodiment in which the above statements also apply and like reference numerals again denote the same or similar elements. In this embodiment, a wedge 36 is additionally provided analogous to the flexor of the flexer station in the measuring device 33. This wedge 36 influences the pre-round measurement in much the same way as the flex wedge affects the rounding, so that the measurement of the rounding property is better adapted to the subsequent rounding. Accordingly, the flexer wedge 36 is preferably adjusted by an actuator and the controller 5.

Anhand der Figuren 4 bis 6 wird eine bevorzugte Ausführungsform zur Ermittlung des Rundungsverhaltens des jeweiligen Bleches erläutert. Die entsprechende Messeinrichtung 50 kann, wie dies für die zuvor beschriebenen Messeinrichtungen 27 oder 33 bis 35 oder 33 bis 36 der Fall ist, in der Zuführstrecke 3 angeordnet sein. Sie kann aber auch im eigentlichen Rundapparat angeordnet sein, insbesondere zwischen der Flexerstation mit den Walzen 8, 9 und dem Flexerkeil 7; sie ist dann aber bevorzugt ein Teil der Flexerstation bzw. in dieser angeordnet. So können die dargestellten Walzen 28 und 29 der Messeinrichtung anstelle der Walzen 8 und 9 der Flexerstation des Rundapparates treten oder anstelle der Walzen 31 und 30 in der Zuführstrecke 3. Für den bevorzugten, da Platz sparenden Fall, dass die Messeinrichtung 50 im Rundapparat angeordnet ist, sind die Walzen 41 und 42 somit die Rundwalzen (entsprechend den Rundwalzen 11 und 12 der vorhergehenden Beispiele) und es könnten somit die zuvor beschriebenen Elemente bzw. Keile 14 und 13 desselben vor bzw. nach den Rundwalzen 41, 42 angeordnet sein, was in Figur 4 lediglich mit den Rechtecken 13 und 14 angedeutet ist. Auch andere Platzierungen vor dem Rundapparat 4 oder in diesem sind natürlich möglich. In dem gezeigten Beispiel weist die Messeinrichtung 50 einen Flexerkeil 37 auf. Wird die Messeinrichtung somit entsprechend der Messeinrichtung 33 bis 36 in der Zuführstrecke 3 eingesetzt, so kann dieser Flexerkeil 37 so eingestellt werden, wie der Flexerkeil 7 im Rundapparat. Ist die Messeinrichtung im Rundapparat selber angeordnet, und insbesondere in der Flexerstation, so übernimmt der Flexerkeil 37 der Messeinrichtung direkt auch die Funktion des Flexerkeils 7 des Rundapparates gemäss den vorherigen Beispielen, so dass das Rundungsverhalten mit Flexerkeil gemessen wird. Die Messeinrichtung 50 könnte indes auch auf ihren Flexerkeil 37 verzichten. Die Messeinrichtung weist mindestens einen Sensor 45 auf, mit dem das Ankommen des jeweiligen Bleches 1 bei oder in der Messeinrichtung 50 detektiert werden kann. Insbesondere wird die in Transportrichtung vordere Kante des Bleches detektiert, insbesondere durch einen optischen Sensor, insbesondere eine Lichtschranke oder mehrere Lichtschranken. Diese Erkennung des Bleches 1 startet bei der Messeinrichtung 50 eine Zeitmessung. Diese kann durch ein separates Zeitmessmittel erfolgen oder durch die Steuerung 5, die bereits erwähnt worden ist, und die in diesem Fall auch die Messeinrichtung steuert bzw. Teil derselben ist. Diese Variante ist in Figur 4 dargestellt. Die Zeitmessung wird beendet, wenn die Vorderkante des Bleches auf einer Messplatte 38 auftrifft, was über eine Leitung an die Steuerung 5 gemeldet wird. Wie in Figur 4 in Seitenansicht ersichtlich, ist die Zeit entsprechend dem Rundungsverhalten unterschiedlich und stellt somit ein Mass für das Rundungsverhalten des Bleches dar. Mit diesem Mass wird somit nachfolgend der Rundapparat entsprechend gesteuert, wie dies bereits beschrieben worden ist. In Figur 4 ist dies mit dem Leitungsstrang 40 angedeutet, welcher von der Steuerung 5 auf die vorbeschriebene Weise zu den vorgängig erläuterten Aktoren der Rundmaschine zur Beeinflussung des Rundungsverhaltens führt.Based on FIGS. 4 to 6 a preferred embodiment for determining the rounding behavior of the respective sheet is explained. The corresponding measuring device 50 can, as for the previously described measuring devices 27 or 33 to 35 or 33 to 36 the case is to be arranged in the feed line 3. However, it can also be arranged in the actual rotary apparatus, in particular between the flexer station with the rollers 8, 9 and the flexer wedge 7; but then it is preferably a part of the flexer station or arranged in this. Thus, the illustrated rollers 28 and 29 of the measuring device instead of the rollers 8 and 9 of the flexer station of the rotary apparatus occur or instead of the rollers 31 and 30 in the feed 3. For the preferred, since space-saving case that the measuring device 50 is arranged in the round apparatus Thus, the rolls 41 and 42 are the round rolls (corresponding to the round rolls 11 and 12 of the preceding examples) and thus the previously described elements or wedges 14 and 13 thereof could be arranged before and after the round rolls 41, 42, respectively FIG. 4 is indicated only with the rectangles 13 and 14. Other placements before the round apparatus 4 or in this are of course possible. In the example shown, the measuring device 50 has a flexing wedge 37. If the measuring device is thus used in accordance with the measuring device 33 to 36 in the feed section 3, then this flexer wedge 37 can be adjusted as the flexer wedge 7 in the round apparatus. If the measuring device is arranged in the rotary apparatus itself, and in particular in the flexer station, then the flexing wedge 37 of the measuring device also directly assumes the function of the flexer wedge 7 of the rotary apparatus according to the previous examples, so that the rounding behavior is measured with a flexer wedge. However, the measuring device 50 could also do without its flexer wedge 37. The measuring device has at least one sensor 45, with which the arrival of the respective sheet metal 1 at or in the measuring device 50 can be detected. In particular, the front edge of the sheet in the transport direction is detected, in particular by an optical sensor, in particular a light barrier or a plurality of light barriers. This detection of the sheet 1 starts at the measuring device 50 a time measurement. This can be done by a separate time measuring means or by the controller 5, which has already been mentioned, and which in this case also controls or is part of the measuring device. This variant is in FIG. 4 shown. The time measurement is terminated when the leading edge of the sheet strikes a measuring plate 38, which is reported via a line to the controller 5. As in FIG. 4 seen in side view, the time is different according to the rounding behavior and thus represents a measure of the rounding behavior of the sheet. With this measure, the round apparatus is thus subsequently controlled accordingly, as has already been described. In FIG. 4 this is indicated by the wiring harness 40, which leads from the controller 5 in the manner described above to the above-explained actuators of the rounding machine for influencing the rounding behavior.

Die Erkennung des Auftreffens der Vorderkante des Bleches auf die Messplatte 38 der Messeinrichtung 50 erfolgt vorzugsweise elektrisch. Dies kann so erfolgen, dass die Messplatte auf einem ersten elektrischen Potential liegt und mindestens eine der Walzen 28, 29 auf einem anderen elektrischen Potential liegt (und falls vorhanden auch der Flexerkeil 27 der Messeinrichtung auf dem elektrischen Potential der Walze liegt). Trifft die Vorderkante des elektrisch leitenden Bleches auf die Messplatte 38, so werden die beiden Potentiale kurzgeschlossen, was durch einen entsprechenden Stromfluss oder einen entsprechenden Spannungsabfall der Messspannung festgestellt werden kann. Damit wird die Zeitmessung gestoppt bzw. ist die Zeit zwischen Erkennung der Vorderkante durch den Sensor 45 und das Auftreffen der Vorderkante auf der Messplatte 38 bestimmt und damit die Rundung des Bleches in der Messeinrichtung 50. Bei beschichteten Blechen kann der elektrische Kontakt zwischen den Walzen 28, 29 und ggf. dem Flexerkeil 37 und dem Blech ungenügend sein. Deshalb wird bevorzugt die Messplatte 38 mit einer Mehrzahl von elektrisch voneinander isolierten, nebeneinander liegenden Messteilen 38a, 38b, 38c, 38d usw. ausgeführt, welche abwechslungsweise ebenfalls auf den unterschiedlichen elektrischen Potentialen liegen. Damit ist auch durch das Kurzschliessen von solchen Messteilen durch die Vorderkante des Bleches, die immer unbeschichtet ist, das Auftreffen auf der Messplatte 38 elektrisch detektierbar Diese Teile können keilförmig ausgestaltet sein, wie in Figur 4 und 5 ersichtlich. Figur 5 zeigt einige der nebeneinander liegenden Messkeile in schaubildlicher Darstellung. Figur 6 zeigt eine entsprechende Messschaltung mit einer Messspannungsquelle Us, wobei die Walzen 28, 29 und der Flexerkeil 37 auf Massepotential liegen. Ebenfalls auf Massepotential liegen die Messkeile 38b, 38d usw. (in Figur 6 ist zur Vereinfachung nur 38b dargestellt). Auf Pluspotential liegen dagegen die Messkeile 38a, 38c usw. (in Figur 6 ist nur 38a dargestellt). Die elektrischen Kurzschlussmöglichkeiten für die Messspannung durch das Auftreffen des Bleches auf der Messplatte 38, wobei die Messspannung detektierbar abfällt und somit die Zeitmessung stoppt, liegen somit beim Kurzschluss Messkeil - Messkeil oder Messkeil - Flexerkeil oder Messkeil - Walze. Die Spannungsabfalldetektion ist durch die Voltmetersymbole in Figur 6 dargestellt.The detection of the impact of the leading edge of the sheet on the measuring plate 38 of the measuring device 50 is preferably carried out electrically. This can be done so that the measuring plate is at a first electrical potential and at least one of the rollers 28, 29 is at a different electrical potential (and, if present, the flexing wedge 27 of the measuring device is at the electric potential of the roller). If the leading edge of the electrically conductive sheet meets the measuring plate 38, the two potentials are short-circuited, which can be determined by a corresponding current flow or a corresponding voltage drop of the measuring voltage. Thus, the time measurement is stopped or the time between detection of the leading edge by the sensor 45 and the impact of the leading edge on the measuring plate 38 is determined and thus the rounding of the sheet in the measuring device 50. For coated sheets, the electrical contact between the rollers 28 , 29 and possibly the flexi wedge 37 and the sheet be insufficient. Therefore, the measuring plate 38 is preferred with a A plurality of electrically insulated from each other, juxtaposed measuring parts 38a, 38b, 38c, 38d, etc. executed, which are also alternately on the different electrical potentials. Thus, by the short-circuiting of such measuring parts by the front edge of the sheet, which is always uncoated, the impact on the measuring plate 38 can be electrically detected These parts can be designed wedge-shaped, as in FIGS. 4 and 5 seen. FIG. 5 shows some of the adjacent measuring wedges in a diagrammatic representation. FIG. 6 shows a corresponding measuring circuit with a measuring voltage source U s , wherein the rollers 28, 29 and the flexing wedge 37 are at ground potential. Also at ground potential are the measuring wedges 38b, 38d, etc. (in FIG. 6 for simplicity, only 38b is shown). On the other hand, the measuring wedges 38a, 38c, etc. (in FIG. 6 only 38a is shown). The electrical short circuit possibilities for the measuring voltage due to the impact of the sheet on the measuring plate 38, whereby the measuring voltage drops detectably and thus stops the time measurement, thus lie in the case of a short - circuit measuring wedge or measuring wedge flexo wedge or measuring wedge roll. The voltage drop detection is indicated by the voltmeter symbols in FIG. 6 shown.

Das Verfahren und die Vorrichtung kommen insbesondere beim Schweissen von Dosenzargen zur Anwendung.The method and the device are used in particular for the welding of can bodies.

Während in der vorliegenden Anmeldung bevorzugte Ausführungen der Erfindung beschrieben sind, ist darauf hinzuweisen, dass die Erfindung nicht auf diese beschränkt ist und auch in anderer Weise innerhalb des Umfangs der folgenden Ansprüche ausgeführt werden kann.While preferred embodiments of the invention are described in the present application, it should be understood that the invention is not limited to these and may be practiced otherwise within the scope of the following claims.

Claims (16)

  1. Method for rounding single sheet metal parts (1, 2) to single container body blanks, in the course of which the single sheet metal parts are supplied to a rounding machine (4) from a stack (10) via a supply path (3) or directly and are rounded in it, wherein at least a sheet metal characteristic influencing the rounding is measured before and/or in the supply path (3) and/or at or in the rounding machine (4), the measurement value or a value derived therefrom being supplied to the controller (5) of the rounding machine (4) and the rounding machine being controlled, depending on the measurement value or the value derived therefrom, in such a way that the rounding radius (R) of the body is kept substantially constant when the sheet metal characteristic changes, characterized in that the rounding behaviour is measured as the sheet metal characteristic, wherein the measurement is carried out non-destructively on subsequent sheet metal parts during the rounding operation.
  2. Method according to claim 1, characterized in that the rounding is done with a speed of 100 to 450 m/minute and in that the rounded container body blanks are supplied from the rounding machine to a welding device for can bodies with a Z-rail for positioning the body edges and welding rollers, particularly with intermediary wire electrodes running on it.
  3. Method according to one of the claims 1 or 2, characterized in that the measurement is done in a flexer station.
  4. Method according to claim 1 or 3, characterized in that the rounding behaviour is measured electrically and/or mechanically and/or optically and/or acoustically.
  5. Method according to claim 4, characterized in that the rounding behaviour is measured electrically by detecting the sheet metal at a predefined position during its passage, and thereby particularly its front edge is detected, and in that a time measurement is carried out, by means of which the time until the prerounded sheet metal has electric contact with a measurement plate (38) is determined.
  6. Method according to claim 1 or 3, characterized in that it is acted upon the sheet metal, during the measurement of the rounding behaviour, with rounding rollers (28, 29; 30, 31) and, if necessary, with a flexer wedge (37; 36) following the rounding rollers.
  7. Method according to one of the claims 1 to 6, characterized in that at least a rounding roller (11, 12) and/or a rounding wedge (13) of the rounding machine is controlled by the measurement value or the value derived therefrom.
  8. Method according to one of the claims 1 to 7, characterized in that a pre-rounding wedge (14) of the rounding machine is controlled by the measurement value or the value derived therefrom.
  9. Method according to one of the claims 1 to 8, characterized in that a flexer station of the rounding machine, particularly a flexer wedge (7) arranged therein, is controlled by the measurement value or the value derived therefrom.
  10. Method for manufacturing can bodies out of single sheet metal parts (1, 2), in the course of which the single sheet metal parts are supplied to a rounding machine (4) from a stack (10) via a supply path (3) or directly and are rounded therein, and the rounded container body blanks are supplied from the rounding machine to a welding device for can bodies with a Z-rail for positioning the body edges and welding rollers, particularly with intermediary wire electrodes running thereon, wherein at least a sheet metal characteristic influencing the rounding is measured before and/or in the supply path (3) and/or at or in the rounding machine (4), in that the measurement value or a value derived therefrom is supplied to the controller (5) of the rounding machine, and in that the rounding machine is controlled, depending on the measurement value or the value derived therefrom, in such a way that the rounding radius (R) of the body is kept substantially constant when the sheet metal characteristic changes, wherein at least a rounding roller (11, 12) and/or a rounding wedge (13) of the rounding machine is controlled by the measurement value or the value derived therefrom, characterized in that the rounding is done with a speed of 100 to 450 m/minute and in that the rounding behaviour is measured as sheet metal characteristic, wherein the measurement is carried out non-destructively on subsequent sheet metal parts during the rounding operation and in that the rounding behaviour is measured electrically and/or mechanically and/or optically and/or acoustically and it is acted upon the sheet metal, during the measurement of the rounding behaviour, with rounding rollers (28, 29; 30, 31) and, if necessary, with a flexer wedge (37; 36) following the rounding rollers.
  11. Rounding machine (4) for rounding single sheet metal parts (1, 2), wherein the rounding machine comprises, as elements for the rounding, rounding rollers (11, 12) and, if necessary, a rounding wedge (13) and/or, if necessary, a pre-rounding wedge (14) as well as adjusting means for said elements, and wherein the rounding machine has at least an actuator (6, 15, 16, 17) for at least one of the elements, by means of which the element can be adjusted in an actuatable manner, and in that the element can be adjusted by means of a controller (5) of the rounding machine by the actuator, wherein the controller has an input for a measurement value of the sheet metal behaviour or a value derived therefrom, characterized in that the rounding machine has a speed of 100 to 450 m/minute and the rounding machine has a measurement device by means of which the rounding behaviour is measured as sheet metal characteristic, wherein the measurement is carried out non-destructively on subsequent sheet metal parts during the rounding operation.
  12. Rounding machine according to claim 11, characterized in that the rounding behaviour is measured electrically and/or mechanically and/or optically and/or acoustically.
  13. Rounding machine according to claim 11, characterized in that the rounding behaviour is electrically measurable by carrying out, during the passage of the sheet metal, a time measurement from a certain position on and thereby the time until the pre-rounded sheet metal has electric contact with a measurement plate (38) is measurable.
  14. Rounding machine according to claim 13, characterized in that the measurement plate (38) is divided in a plurality of neighbouring measurement parts (38a, 38b, 38c, 38d) which are electrically isolated from one another.
  15. Rounding machine according to claim 11 or 12, characterized in that it is acted upon the sheet metal, during the measurement of the rounding behaviour, with rounding rollers (28, 29; 30, 31) and if necessary with a flexer wedge (37; 36) following the rounding rollers.
  16. Welding device for can bodies, with a Z-rail for positioning the body edges and with welding rollers, particularly with intermediary wire electrodes running on it, comprising a rounding machine according to one of the claims 11 to 15.
EP08733799A 2007-05-30 2008-04-17 Method and device for bending sheet metal sections Active EP2148751B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8622007 2007-05-30
PCT/CH2008/000173 WO2008144946A1 (en) 2007-05-30 2008-04-17 Method and device for bending sheet metal sections

Publications (2)

Publication Number Publication Date
EP2148751A1 EP2148751A1 (en) 2010-02-03
EP2148751B1 true EP2148751B1 (en) 2012-09-05

Family

ID=39743800

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08733799A Active EP2148751B1 (en) 2007-05-30 2008-04-17 Method and device for bending sheet metal sections
EP08733800A Active EP2152445B1 (en) 2007-05-30 2008-04-17 Method and device for adjusting a flexing station during the bending of sheet metal

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08733800A Active EP2152445B1 (en) 2007-05-30 2008-04-17 Method and device for adjusting a flexing station during the bending of sheet metal

Country Status (8)

Country Link
US (2) US8627694B2 (en)
EP (2) EP2148751B1 (en)
CN (2) CN101678423B (en)
AT (1) ATE477863T1 (en)
DE (1) DE502008001173D1 (en)
ES (2) ES2348067T3 (en)
PT (1) PT2148751E (en)
WO (2) WO2008144947A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2110191E (en) 2008-04-18 2011-05-26 Soudronic Ag Rounding device with an articulated preliminary rounding element at the rounding station and method for rounding sheet metal
CH700092A2 (en) * 2008-12-09 2010-06-15 Soudronic Ag Vorrund element to a rounding apparatus.
CN104624737B (en) * 2014-12-24 2017-02-08 广东中南声像灯光设计研究院 Bending machine controlling torque adjustment and roll bending through PLC and method
CN107889519A (en) * 2015-01-09 2018-04-06 伊利诺斯工具制品有限公司 For being heat-treated the resistive heating system in column and method of continuous conduction product
WO2018177876A1 (en) 2017-03-29 2018-10-04 Can Man Ag Method for rounding sheet metal blanks for containers and a longitudinal seam welding machine for producing can bodies, comprising a round station
US11219933B2 (en) * 2017-11-10 2022-01-11 Promau S.R.L. Apparatus and method for support and controlled advancement of a metal sheet in a bending machine for obtaining cylindrical or truncated cone structures

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221776C3 (en) 1972-05-04 1980-01-24 Hoesch Ag, 4600 Dortmund Control device for adjusting the belt bending device of a screw-type tube mechanism
IT8249012A0 (en) 1982-08-20 1982-08-20 Fmi Mecfond Aziende Mecc ELECTRIC RESISTANCE WELDING MACHINE FOR BOX BODIES WITH IMPROVED MEANS FOR CALENDERING THE METAL CLAMP AND TRANSPORT OF THE CALENDERED BODIES TO THE WELDING STATION
CH671945A5 (en) * 1987-05-07 1989-10-13 Elpatronic Ag
US5209625A (en) 1989-08-22 1993-05-11 Elpatronic Ag Apparatus for rounding and conveying onwards sheet-metal blanks for can bodies
CN1029092C (en) * 1990-03-05 1995-06-28 卡尔·厄思斯特·洛巴哈 Contouring of metal sheets
ATE120389T1 (en) * 1990-09-28 1995-04-15 Promau Srl PROGRAMMABLE SHEET METAL BENDING MACHINE.
FR2687336B1 (en) 1992-02-14 1996-05-15 Jammes Ind Sa AUTOMATED PRODUCTION LINE FOR WELDED ROLLED RODS.
CN2265864Y (en) * 1996-06-03 1997-10-29 吴忠市台钻厂 Metal workpiece rounding and angle-bending device
CN1138605C (en) * 1998-04-16 2004-02-18 湖北重型机器集团有限公司 Measuring method for rolling bend part curvature and roller type bending machine
DE102004041732A1 (en) * 2004-08-28 2006-03-02 Sms Demag Ag Method of straightening a metal strip and straightening machine

Also Published As

Publication number Publication date
ATE477863T1 (en) 2010-09-15
CN101678424B (en) 2014-04-02
PT2148751E (en) 2012-11-29
US20100154500A1 (en) 2010-06-24
EP2152445B1 (en) 2010-08-18
ES2348067T3 (en) 2010-11-29
WO2008144946A1 (en) 2008-12-04
CN101678423A (en) 2010-03-24
CN101678423B (en) 2012-05-23
ES2391795T3 (en) 2012-11-29
US8573013B2 (en) 2013-11-05
EP2152445A1 (en) 2010-02-17
DE502008001173D1 (en) 2010-09-30
WO2008144947A1 (en) 2008-12-04
US8627694B2 (en) 2014-01-14
US20100154499A1 (en) 2010-06-24
CN101678424A (en) 2010-03-24
EP2148751A1 (en) 2010-02-03

Similar Documents

Publication Publication Date Title
EP2148751B1 (en) Method and device for bending sheet metal sections
EP0796158B1 (en) Method and device for the optimized production of helical springs on automatic spring-winding machines
DE2930005A1 (en) METHOD AND DEVICE FOR PRODUCING A PANEL MATERIAL THAT HAS AN EVEN WIDTH AND A LENGTH CHANGE IN THICKNESS
EP2110191B1 (en) Rounding device with an articulated preliminary rounding element at the rounding station and method for rounding sheet metal
EP1505025B1 (en) Method and device for controlling the web tension forces and the cutting register of a rotary printer
DE10335887A1 (en) Method and device for controlling the web tension and the cut register of a web-fed rotary printing machine
EP2707208B1 (en) Device and method for calibrating and adjusting a measurement system in a tablet press
EP0913352A2 (en) Buckling folder and method for registration control of a buckling folder
EP1321411A1 (en) Method for the adjustment of the folding nips of a plurality of folding roller pairs as well as a folding apparatus for carrying out the method
WO2008119090A1 (en) Method for establishing a setup parameter value for a bending press
EP3572161B1 (en) Method and device for producing a product made of a flexible rolled strip material
DE102010013913B4 (en) Joining method and joining device
CH678407A5 (en)
EP1013589B1 (en) Buckling folder and method for registration control of a buckling folder
EP0728555B1 (en) Can welding method
DE19725726C2 (en) Method for measuring flatness of strips, in particular metal strips
EP3566788A1 (en) Installation and method for separating flexible rolled strip material
EP1480767A1 (en) Method for reducing bending angle errors during die bending
EP2916988B1 (en) Method and device for roller seam welding of can bodies
WO1997024595A1 (en) Device and method for measuring the surface hardness of rolls of paper or other material strips
DE3533275A1 (en) Sensing device for the travel control of webs
DE10144731A1 (en) Welding tongs for electrical resistance welding has two electrodes, of which at least one is attached to electrode arm, force sensor arranged on one electrode arm holder
DE102014219012A1 (en) Device and method for detecting material properties of a packaging material web, preferably in a packaging machine and packaging machine
EP3554753B1 (en) Method of and device for roll welding of container bodies
DE102018113631A1 (en) transport device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091103

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17Q First examination report despatched

Effective date: 20100413

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. AG PATENT- UND MARKENANWAELTE VSP

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 573843

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008008108

Country of ref document: DE

Effective date: 20121031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2391795

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20121129

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20121114

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121205

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Effective date: 20120905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121206

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130105

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121205

26N No opposition filed

Effective date: 20130606

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008008108

Country of ref document: DE

Effective date: 20130606

BERE Be: lapsed

Owner name: SOUDRONIC A.G.

Effective date: 20130430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130417

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 573843

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20080417

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130417

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230418

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230419

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20230406

Year of fee payment: 16

Ref country code: IT

Payment date: 20230426

Year of fee payment: 16

Ref country code: FR

Payment date: 20230424

Year of fee payment: 16

Ref country code: ES

Payment date: 20230627

Year of fee payment: 16

Ref country code: DE

Payment date: 20220620

Year of fee payment: 16

Ref country code: CH

Payment date: 20230502

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230419

Year of fee payment: 16