EP2148751B1 - Procédé et dispositif pour cintrer des sections de tôles - Google Patents

Procédé et dispositif pour cintrer des sections de tôles Download PDF

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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
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EP
European Patent Office
Prior art keywords
rounding
sheet metal
measurement
machine
wedge
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EP08733799A
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German (de)
English (en)
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EP2148751A1 (fr
Inventor
Peter Schreiber
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Soudronic AG
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Soudronic AG
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Publication of EP2148751A1 publication Critical patent/EP2148751A1/fr
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    • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Vehicle Body Suspensions (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (16)

  1. Méthode de cintrage de découpes de tôle individuelles (1, 2) donnant des corps de boîte bruts individuels, dans laquelle les individuelles découpes de tôle sont alimentées d'une pile (10) par une voie d'alimentation (3) ou directement en une machine de cintrage (4) et y sont cintrées, en amont et/ou dans la voie d'alimentation (3) et/ou à la ou dans la machine de cintrage (4) au moins une caractéristique de la tôle qui influence le cintrage étant mesurée, la valeur de mesure ou une valeur en dérivée étant fournie à la commande (5) de la machine de cintrage (4) et la machine de cintrage étant commandée dépendant de la valeur de mesure ou de la valeur en dérivée de sorte que le radius de cintrage (R) du corps est gardé essentiellement constant quand la caractéristique de la tôle change, caractérisée en ce que le comportement de cintrage est mesuré comme caractéristique de cintrage, la mesure étant effectuée pendant l'opération de cintrage de manière non-destructive à des découpes de tôle consécutives.
  2. Méthode selon la revendication 1, caractérisée en ce que le cintrage est effectué avec une vitesse de 100 à 450 m/minute et en ce que les corps de boîte bruts sont alimentés de la machine de cintrage en un dispositif de soudage pour des corps de boîte avec une Z-barre pour le positionnement des bords de boîte et des rouleaux de soudage, particulièrement avec des fil-électrodes intermédiaires s'étendant là-dessus.
  3. Méthode selon l'une des revendications 1 ou 2, caractérisée en ce que la mesure est exécutée dans une station flex.
  4. Méthode selon la revendication 1 ou 3, caractérisée en ce que le comportement de cintrage est mesuré de manière électrique et/ou mécanique et/ou optique et/ou acoustique.
  5. Méthode selon la revendication 4, caractérisée en ce que le comportement de cintrage est mesuré de manière électrique en détectant la tôle pendant le passage à une position prédéterminée, et particulièrement son bord avant, et en ce qu'une mesure de temps est effectuée, à l'aide de laquelle le temps jusqu'à la tôle pré-cintrée a du contact électrique avec une plaque de mesure (38) est mesuré.
  6. Méthode selon la revendication 1 ou 3, caractérisée en ce que il est agit sur la tôle, pendant la mesure du comportement de cintrage, avec des rouleaux de cintrage (28, 29; 30, 31) et, si nécessaire, avec un cale de flex (37; 36) qui suit les rouleaux de cintrage.
  7. Méthode selon l'une des revendications 1 à 6, caractérisée en ce qu'au moins un rouleau de cintrage (11, 12) et/ou une cale de cintrage (13) de la machine de cintrage est commandée par la valeur de mesure ou la valeur en dérivée.
  8. Méthode selon l'une des revendications 1 à 7, caractérisée en ce qu'une cale de pré-cintrage (14) de la machine de cintrage est commandée par la valeur de mesure ou la valeur en dérivée.
  9. Méthode selon l'une des revendications 1 à 8, caractérisée en ce qu'une station flex de la machine de cintrage, particulièrement une cale de cintrage (7) arrangée dedans, est commandée par la valeur de mesure ou la valeur en dérivée.
  10. Méthode pour la fabrication des corps de boîtes à partir de découpes de tôle (1, 2) individuelles, dans laquelle les découpes de tôle individuelles sont alimentées d'une pile (10) par une voie d'alimentation (3) ou directement en une machine de cintrage (4) et y sont cintrées, et les corps de boîte bruts sont alimentés de la machine de cintrage en un dispositif de soudage pour des corps de boîte avec une Z-barre pour positionner les bords des corps et des rouleaux de soudage, particulièrement avec des fil-électrodes intermédiaires s'étendant là-dessus, en amont et/ou dans la voie d'alimentation (3) et/ou à la ou dans la machine de cintrage (4) au moins une caractéristique de la tôle qui influence le cintrage étant mesurée, la valeur de mesure ou une valeur en dérivée étant fournie à la commande (5) de la machine de cintrage (4) et la machine de cintrage étant commandée dépendant de la valeur de mesure ou de la valeur en dérivée de sorte que le radius de cintrage (R) du corps est gardé essentiellement constant quand la caractéristique de la tôle change, au moins un rouleau de cintrage (11, 12) et/ou une cale de cintrage (13) de la machine de cintrage étant commandée par la valeur de mesure ou la valeur en dérivée, caractérisée en ce que le cintrage est effectué avec une vitesse de 100 à 450 m/minute et en ce que le comportement de cintrage est mesuré comme caractéristique de cintrage, la mesure étant exécutée pendant l'opération de cintrage de manière non-destructive à des découpes de tôle consécutives et le comportement de cintrage est mesuré de manière électrique et/ou mécanique et/ou optique et/ou acoustique et en ce qu'il est agit sur la tôle, pendant la mesure du comportement de cintrage, avec des rouleaux de cintrage (28, 29; 30, 31) et, si nécessaire, avec une cale de flex (37; 36) qui suit les rouleaux de cintrage.
  11. Machine de cintrage (4) pour cintrer de découpes de tôle (1, 2), la machine de cintrage comprenant comme éléments de cintrage des rouleaux de cintrage (11, 12) et/ou, le cas échéant, une cale de pré-cintrage (14) et aussi des moyens d'ajustage pour ces éléments, et la machine de cintrage ayant au moins un actionneur (6, 15, 16, 17) pour au moins un des éléments, à l'aide duquel l'élément peut être ajusté de manière actionné, et en ce que l'élément est ajustable par une commande (5) de la machine de cintrage à l'aide de l'actionneur, la commande ayant en outre une entrée pour une valeur de mesure de la caractéristique de tôle ou une valeur en dérivée, caractérisée en ce que la machine de cintrage est dotée d'une vitesse de 100 à 450 m/minute pour le cintrage et la machine de cintrage a un dispositif de mesure à l'aide duquel le comportement de cintrage est mesuré comme caractéristique de tôle, la mesure étant effectuée de manière non-destructive à des découpes de tôle consécutives pendant l'opération de cintrage.
  12. Machine de cintrage selon la revendication 11, caractérisée en ce que le comportement de cintrage est mesurable de manière électrique et/ou mécanique et/ou optique et/ou acoustique.
  13. Machine de cintrage selon la revendication 11, caractérisée en ce que le comportement de cintrage est mesurable de manière électrique en détectant la tôle pendant le passage à partir d'une position prédéterminée et en ce qu'une mesure de temps peut être effectuée, à l'aide de laquelle le temps jusqu'à la tôle pré-cintrée a du contact électrique avec une plaque de mesure (38) est déterminable.
  14. Machine de cintrage selon la revendication 13, caractérisée en ce que la plaque de mesure (38) est divisée en une pluralité des parties de mesure (38a, 38b, 38c, 38d) voisines et électriquement isolées l'une de l'autre.
  15. Machine de cintrage selon la revendication 11 ou 12, caractérisée en ce qu'il est agit sur la tôle, pendant la mesure du comportement de cintrage, avec des rouleaux de cintrage (28, 29; 30, 31) et, si nécessaire, avec une cale de flex (37; 36) qui suit les rouleaux de cintrage.
  16. Dispositif de soudage pour des corps de boîtes avec une Z-barre pour le positionnement des bords des corps et avec des rouleaux de soudage, particulièrement avec des fil-électrodes intermédiaires s'étendant là-dessus, comprenant une machine de cintrage selon l'une des revendications 11 à 15.
EP08733799A 2007-05-30 2008-04-17 Procédé et dispositif pour cintrer des sections de tôles Active EP2148751B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8622007 2007-05-30
PCT/CH2008/000173 WO2008144946A1 (fr) 2007-05-30 2008-04-17 Procédé et dispositif pour cintrer des sections de tôles

Publications (2)

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

Family

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Application Number Title Priority Date Filing Date
EP08733799A Active EP2148751B1 (fr) 2007-05-30 2008-04-17 Procédé et dispositif pour cintrer des sections de tôles
EP08733800A Active EP2152445B1 (fr) 2007-05-30 2008-04-17 Procédé et dispositif pour ajuster un poste d'assouplissement pendant le cintrage de tôles

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08733800A Active EP2152445B1 (fr) 2007-05-30 2008-04-17 Procédé et dispositif pour ajuster un poste d'assouplissement pendant le cintrage de tôles

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Country Link
US (2) US8573013B2 (fr)
EP (2) EP2148751B1 (fr)
CN (2) CN101678424B (fr)
AT (1) ATE477863T1 (fr)
DE (1) DE502008001173D1 (fr)
ES (2) ES2348067T3 (fr)
PT (1) PT2148751E (fr)
WO (2) WO2008144946A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2110191B1 (fr) * 2008-04-18 2011-03-09 Soudronic AG Appareil d'arrondissage avec un elément d'arrondissage préalable sur la station d'arrondissage et procédé d'arrondissage de tôles
CH700092A2 (de) * 2008-12-09 2010-06-15 Soudronic Ag Vorrund-Element an einem Rundapparat.
CN104624737B (zh) * 2014-12-24 2017-02-08 广东中南声像灯光设计研究院 Plc控制扭矩调节与滚压折弯的折弯机及方法
WO2016111703A1 (fr) * 2015-01-09 2016-07-14 Illinois Tool Works Inc. Système de chauffage résistif en ligne et procédé de traitement thermique de produits conducteurs continus
WO2018177876A1 (fr) 2017-03-29 2018-10-04 Can Man Ag Procédé de cintrage de découpes de tôle pour des unités d'emballage et machine à souder à cordon longitudinal pour la fabrication de corps de boîtes comprenant un poste de cintrage
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

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DE2221776C3 (de) 1972-05-04 1980-01-24 Hoesch Ag, 4600 Dortmund Steuereinrichtung zum Verstellen der Bandbiegevorrichtung eines Schraubennah trohrwerkes
IT8249012A0 (it) 1982-08-20 1982-08-20 Fmi Mecfond Aziende Mecc Saldatrice elettrica a resistenza per corpi scatolari con mezzi perfezionati per la calandratura della fascetta metallica, e il trasporto dei corpi calandrati fino alla stazione di saldatura
CH671945A5 (fr) 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 (zh) * 1990-03-05 1995-06-28 卡尔·厄思斯特·洛巴哈 金属薄板的成型
ATE120389T1 (de) * 1990-09-28 1995-04-15 Promau Srl Programmierbare blechbiegemaschine.
FR2687336B1 (fr) 1992-02-14 1996-05-15 Jammes Ind Sa Ligne de production automatisee de viroles roulees soudees.
CN2265864Y (zh) * 1996-06-03 1997-10-29 吴忠市台钻厂 金属件滚圆、折角器
CN1138605C (zh) * 1998-04-16 2004-02-18 湖北重型机器集团有限公司 滚弯工件曲率的测量方法及可测工件曲率的辊式弯曲机
DE102004041732A1 (de) * 2004-08-28 2006-03-02 Sms Demag Ag Verfahren zum Richten eines Metallbandes und Richtmaschine

Also Published As

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

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