[go: up one dir, main page]

EP2448689B1 - Procédé et dispositif de pliage d'une pièce - Google Patents

Procédé et dispositif de pliage d'une pièce Download PDF

Info

Publication number
EP2448689B1
EP2448689B1 EP10739461.1A EP10739461A EP2448689B1 EP 2448689 B1 EP2448689 B1 EP 2448689B1 EP 10739461 A EP10739461 A EP 10739461A EP 2448689 B1 EP2448689 B1 EP 2448689B1
Authority
EP
European Patent Office
Prior art keywords
bending
radiation
workpiece
die
die arrangement
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.)
Not-in-force
Application number
EP10739461.1A
Other languages
German (de)
English (en)
Other versions
EP2448689A1 (fr
Inventor
Ferdinand Bammer
Dieter SCHUÖCKER
Armin Rau
Joachim Aichinger
Gerhard Sperrer
Thomas Schumi
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.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
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 Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP2448689A1 publication Critical patent/EP2448689A1/fr
Application granted granted Critical
Publication of EP2448689B1 publication Critical patent/EP2448689B1/fr
Not-in-force 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling

Definitions

  • the invention relates to a method according to the preamble of patent claim 1 and a bending die according to the preamble of claims 12 and 13.
  • the bending of workpieces by means of bending presses is a long-standing and frequently used reliable method of machining workpieces by forming.
  • the field of application of bending methods is often limited by the material properties, in particular by mechanical-technological properties.
  • brittle materials such as magnesium, titanium, spring steels, high-strength Al alloys, high-strength steels or other known as brittle materials, the problem is that when deformed by bending these materials do not have sufficient plastic deformability and therefore break during the bending process or along the Forming zone cracks occur.
  • breaking elongation ie the value of the plastic deformation that a work piece to be reshaped can endure up to the point of breakage.
  • yield ratio which sets the required tension in a workpiece at the beginning of a noticeable plastic deformation in relation to the stress prevailing in the workpiece at break load.
  • a known method is to heat a workpiece to be bent at least in the region of the forming zone, whereby in this heated area the voltage required to initiate plastic deformation can be reduced.
  • EP 0 993 345 A1 a method for bending a workpiece by mechanical force under selective heating of the workpiece along a bending line by a laser beam, in which an elongated radiation field is formed from one or more laser beams and wherein the radiation field is formed at all points along the bending line of a heating zone on the workpiece.
  • the device for shaping the linear radiation field comprises cylindrical lenses and / or cylindrical mirrors with which a radiation field is fed through an opening in the bending die to the tool.
  • a laser beam is split by a beam-forming optical system consisting of a prism mirror, two cylindrical lenses and two cylindrical deflecting mirrors into two radiation fields, each of which generates a linear heating zone.
  • the thus transformed laser beam is supplied through a slot-like opening in the bottom of the die to the workpiece.
  • the object of the invention is to provide a generic bending method or a bending die which can be used for this purpose, which can be better used for practical applications and is also suitable for workpieces of different dimensions with simultaneously high requirements with respect to safety at work.
  • the object of the invention is achieved by a method according to claim 1 and a Biegegesenkanix according to claim 12 or 13.
  • the Biegegesenkan extract can be limited, on the one hand minimizes the required for the local heating of the workpiece radiation energy, as well as a Reduces possible exposure to the radiation for a user located in the vicinity of the bending tool, since the proportion of radiation, the radiation from the bending die not striking the workpiece is greatly reduced by these measures.
  • the controlled local generation of the radiation takes place by a plurality of radiation sources arranged along the bending recess within the bending die, which emit radiation with a lower power density, but in total have a larger overall beam exit surface than a single highly concentrated focused radiation source.
  • Diode laser bars which have a strip-shaped beam exit surface, for example with a dimension of 10 mm in length and 1 mm in width, are particularly suitable as radiation sources for this purpose.
  • the longitudinal axis of the strip-shaped beam exit surface is oriented in the longitudinal direction of the groove-like bending recess, whereby already a distribution of radiation along the bending recess takes place solely by the shape of the beam exit surface.
  • a plurality of radiation sources are arranged within the bending die, one or more of them may remain deactivated during the heating of the workpiece, as a result of which no or only very little radiation emerges at the section of the radiation outlet opening lying above the deactivated radiation sources.
  • the at least one optical element is deflected by the incoming high-energy radiation from an external radiation source within the bending dies.
  • controlled shielding within the bending die may be performed by means of a shielding element of a shielding device capable of enduring the incident radiation without adverse changes to radiation generated in the bending die assembly or radiation introduced into the bending die from an external radiation source at the exit through the jet exit aperture Covered by a workpiece covered portions of a bending recess, whereby the emerging from the bending die radiation can be more accurately adapted to the dimensions of a workpiece.
  • the shielding is preferably carried out by means of an adjustable shielding element of a shielding device.
  • At least one adjustable shielding element for covering sections not covered by the workpiece is provided on the bending die in the beam direction.
  • This shielding element can be designed as a slide which is adjustable along the bending recess, and is thus covered or closed by the shielding element, depending on the bending length of the workpiece, of the uncovered part of the bending recess, thereby avoiding at least a direct exit of radiation adjacent to the workpiece can be.
  • the shielding element can be adjustable in the direction of the bending length until it contacts the workpiece, whereby an optimal prevention of leakage radiation can take place for any desired bending length.
  • the adjustment of the shielding element can be effected by any suitable adjusting drive, in particular a linear drive, for example by means of a pneumatic cylinder, with which a defined lateral pressing of the shielding element to the workpiece can be achieved.
  • the workpiece may in particular be positioned in each case at the right or at the left end of a bending die by means of a stationary stop and the shielding element in each case be approximated from the other end of the bending die by means of the actuator to the workpiece.
  • a structurally simple, Alternative adjustment for the shield can be formed by a friction wheel.
  • the shielding element can thereby remain resting or contacting the workpiece during the bending operation and is pressed by a bending punch together with the workpiece into the bending recess.
  • the shielding element or the entire shielding device can be pressed for example by means of an outwardly acting spring on the upper side of the bending recess, and be limited by a guide in its adjustability to the outside, so be biased in an outer basic position.
  • the abutment of the shielding element on the edge of the workpiece is checked mechanically, electrically or optically, in particular without contact.
  • a mechanical sensor element for example in the form of a push-button switch, can be provided on the front side of the shielding element, a current flow can be monitored during contact between the shielding element and the workpiece, or optical monitoring can take place by means of a camera and image evaluation.
  • An optical monitoring of the abutment can preferably take place in that the shielding element is designed so that it can be positioned with its front end below the workpiece and in this end portion an optically detectable mark is attached, which in case of correct abutment of the shielding on the workpiece under this comes to rest and can be queried by a camera with image analysis, whether the mark is still visible or is no longer visible by correct concern of the shielding.
  • the shielding element may have a mirrored surface on its underside and / or have a convex, radiation-dissipating surface and / or be equipped with a temperature monitor.
  • a reflective or radiation-dissipating surface of the shielding is absorbed by this only a portion of the radiant power, while the remaining reflected portion is distributed over the interior of the bending die, whereby the formation of temperature peaks is largely avoided.
  • the shielding element may comprise a cooling device, for example in the form of water-carrying channels.
  • a further increase in safety for an operator present in the vicinity of the bending die is achieved when a focal point of the radiation caused by a beam influencing arrangement in the bending die is positioned within the bending recess, whereby outgoing radiation outside the bending die runs divergently. Outside the BiegeausNeillung and above the contact surface thus no concentrated radiation is present, and takes a possible threat to an operator with increasing distance from the bending recess from very quickly.
  • the radiation is preferably conducted by means of scattering lenses or convex mirrors to the beam exit opening or, when using concentrating optical components such as converging lenses or concave mirrors, a focal point formed by them is laid so that it is still located inside the bending recess.
  • the region in which the radiation has the highest uniformity of the radiation intensity along the deformation zone can be placed in a range of high degrees of deformation, ie not at the level of the contact surface for the undeformed workpiece but only after a certain penetration depth of the punch.
  • the forming zone of a workpiece in the phase in which the highest stresses occur during the bending process is uniformly irradiated and thereby heated, whereby optimum bending results can be achieved.
  • the detection of leakage radiation prior to heating the workpiece may be done with non-hazardous, low energy density test radiation.
  • different test radiation sources can be provided by the radiation source provided for the heating, or it is also possible that the radiation source is influenced such that it only emits radiation with a low energy density, e.g. by supplying lower voltage diode laser bars emitting only incoherent low energy density light.
  • the method on the workpiece to be deformed at least at one point, preferably at several points, the forming zone during the heating of the Temperature recorded.
  • This detection of the temperature can be tactile with touching sensor elements in the bending die or in the punch or even without contact by means of a thermo-optical measuring method, such as using a pyrometer or a thermal imaging camera.
  • a defect in the radiation source or on beam-influencing optical components can be detected before a bending operation is performed on a not sufficiently heated workpiece and the workpiece is thereby possibly destroyed because it due to the low temperature or due to high temperatures breaks during the bending process or an achievable bending angle is outside a certain tolerance.
  • the evaluation of the temperature measurement and the meeting of suitable measures in determining a non-scheduled heating of the workpiece can preferably be done by means of an electronic control device.
  • a shielding arrangement can be formed, for example, by an automatically positioned curtain, which, similar to the shielding of welding workstations, can reduce the spread of harmful radiation.
  • the controlled local generation of radiation which is conducted through the radiation outlet opening onto a workpiece, can take place in the bending die by arranging several radiation sources in that no activation of the radiation sources occurs in unused sections of the length of the bending die. This can be done by circuitry measures within the bending die or else by a control device arranged outside the bending die arrangement.
  • the power output by the radiation source and / or the exposure time of the radiation to the material and the geometric dimensions of the workpiece to be bent can be adapted by means of a control device.
  • the control device used for this purpose can also be used to control the bending press or vice versa be realized by the control device of the radiation source.
  • the radiation power emitted by the radiation source or sources onto the workpiece is monitored by periodic or permanent measurement.
  • sensors can be arranged in the bending die, for example in the region of the bending recess, with which both the absolute value and the relative distribution of the radiation intensity can be measured. This can be provided in addition to monitoring the temperature of the forming zone, since due to different material properties, in particular different thermal conductivities and heat capacities of the workpieces to be processed also monitors the output of the Biegegesenkanowskiowskiowskiowskiowskiowskiowskiowski
  • An advantageous development of the method consists in that an air connection with adjoining air channel or flow path is provided on the bending die through which Purging air can be supplied into the region between the jet generators or the beam influencing arrangement and the jet outlet opening or the workpiece, which emerges again at another location.
  • the flow path limiting parts of the Biegegesenkanaku, in particular the tool body are cooled and can further be reduced deposition of dust or other contaminants in the beam-guiding channels or on the optical elements within the Biegegesenkan für.
  • the guidance of purging air can be limited to approximately the area of the bending recess.
  • the method can be advantageously carried out so that the workpiece before the action of the radiation by the punch a small, in particular only elastic, bending deformation is subjected and fixed in this position by the punch, only then followed by the heating by discharging radiation to the bottom the workpiece is activated, and after a predetermined period of time from activation of the radiation, which may also be zero, or from reaching a certain temperature of the workpiece in the forming zone, the bending deformation is continued, the radiation until or until just before completion of the bending remains activated.
  • a predetermined period of time from activation of the radiation which may also be zero, or from reaching a certain temperature of the workpiece in the forming zone
  • the activation of the laser radiation with the resulting heating of the workpiece in the forming zone increases the plastic deformability of the originally brittle workpiece only after a time delay, with continued or interrupted punch movement, and the bending process can also be continued into the region of high degrees of deformation without cracks or Fractures in the material occur.
  • the stamp movement can thus be carried out without interruption or else with an interruption within which a certain temperature level of the forming zone is reached.
  • a temperature monitoring used for this purpose can also ensure that the laser radiation is activated and effective, which can be ruled out in an elegant way accidental Kaltumformache.
  • a further measure to prevent leakage radiation in the vicinity of the bending die or a bending die arrangement is that interfaces between adjacent beam-guiding elements, in particular between adjacent bending dies or between an external radiation source and a bending die of a bending die assembly, are optically sealed. This can be done, for example, by producing adjoining end surfaces or joining surfaces of adjacent bending dies with high accuracy of fit or shape accuracy, thereby minimizing gaps and cracks between adjacent bending dies. Alternatively or in addition to this measure, additional cover elements or sealing elements can be provided at such interfaces between elements of a bending die arrangement.
  • a further improvement of the method can be achieved by measuring the temperature of the workpiece at the forming zone during the heating by radiation and supplying it as a measured value to an electronic control device which blocks, releases, triggers, accelerates or, depending on the measured temperature, a bending process delayed and / or increases the radiation power by activating or deactivating or power control of the radiation sources in the Biegegesenkanssen or the external radiation source, reduced or disabled.
  • the object of the invention is further achieved by a bending die arrangement according to claim 12, wherein for the controlled distributed generation of the radiation, an array of radiation sources, in particular diode laser bars, is mounted within the tool body, selectively activatable or deactivatable and at least approximately uniformly along the longitudinal direction of the bending recess are arranged behind the jet outlet opening in the tool body.
  • diode laser bars as radiation sources is particularly advantageous for use for local heating of sheet metal workpieces, since there are energy densities that can cause a sufficiently rapid heating, but destruction of the workpiece by too long exposure time is hardly possible or serious injury to an operator unforeseen radiation leakage is less likely due to the limited energy density.
  • each tool body has at least one beam entry opening with subsequent beam path inside the Biegegesenks for introducing at least one of a tool body arranged outside the radiation source generated high-energy concentrated beam and each in the tool body Biegegesenks the bending die assembly at least one beam influencing arrangement is arranged, the at least a portion of the beam temporally and locally stationary deflects, expands and passes through the beam exit opening to the workpiece in the region of the support surface.
  • Inventive Biegegesenke or Biegegesenkan can be provided at their front ends with termination elements that close interfaces or openings for forwarding of partial beams or interfaces for connection of cooling water, electricity, scavenging air or.
  • An embodiment of a bending die arrangement according to the invention that is particularly advantageous from the point of view of worker protection consists in providing at least one adjustable shielding element for covering partial sections of the bending recess not covered by the workpiece at the bending die between the beam exit opening and the contact surface.
  • the inventive method can be designed so that a stay in the vicinity of the press corresponds to a maximum risk to an operator according to laser class 1.
  • a bending die arrangement according to the invention can also be embodied such that the tool base body comprises a die adapter which forms the contact surface and the bending recess and which is interchangeably disposed on the remaining part of the tool base body containing the radiation sources or beam influencing arrangement.
  • the tool base body can be adapted to different bending tasks by exchanging the die adapter; in particular, the die width can be modified, which substantially increases the range of use of such a bending die arrangement.
  • such a bending die arrangement which is relatively expensive due to the built-in radiation sources or beam influencing arrangements, can be used more frequently and thus more economically.
  • a bending tool assembly 1 is shown, which is suitable for bending a workpiece 2 using the method according to the invention or using a bending die arrangement 3 according to the invention.
  • the bending tool assembly 1 comprises at least one bending die assembly 3, which is arranged on a partially shown, stationary first press bar 4 or a press table of a bending press or press brake and only partially shown bending punch 5, which is arranged on an adjustable second press bar, not shown, and together with this for the implementation of a bending deformation in the adjustment direction 6 is adjustably mounted.
  • the bending die assembly 3 comprises at least one bending die 7 with a tool base body 8, which essentially corresponds in terms of its external dimensions to a conventional bending die.
  • the bending die arrangement 3 or the at least one bending die 7 preferably has a connection profile 9 which is suitable for being received in a standard tool receptacle 10 of a conventional press bar 4.
  • the bending recess 12 is formed as a V-groove 13 and the bending die 7 thus designed as a V-die 14, but there are also deviating shapes of the bending recess 12 possible, as long as they are suitable, the so-called free bending, so bending with support of the workpiece 2 along two lines of the bending die assembly 3 and the bending die 7 and approximately linear load by the punch 5 between these two support lines to allow.
  • U-shaped or rectangular bending recesses 12 are also conceivable in cross-section.
  • the bending punch 5 has a wedge-shaped cross section whose wedge angle corresponds approximately to the angle of the V-groove 13 and is arranged at least approximately in the plane of symmetry of the bending recess 12.
  • the feasible with such a bending tool assembly 1 bending process is also referred to as folding, and can be carried out as a bending or as recupergebiegen.
  • the bending line 16 generally runs approximately in the middle of a forming zone 17 in which the plastic deformation of the workpiece 2 takes place during the bending operation.
  • the high-energy radiation 19 used for local heating can be approximately at the bending length 21 (see Fig. 2 or Fig. 4 ), so be adapted to the length of the forming zone 17 to be heated of the workpiece 2 to be bent by the directed from the bending recess 12 of the Biegegesenkan instruct 3 on the workpiece 2 radiation 19 arranged by a number of within the Biegegesenkan instruct 3 along the bending recess 12 and optionally activatable radiation sources 22 are generated or a high-energy concentrated beam introduced into the bending die assembly 3 is converted within the bending die assembly 3 into radiation 19 by a number of disposed within the Biegegesenkanssen angel 3 beam influencing arrangements 23 each deflect a portion of the beam temporally and locally stationary, expand to fan beams 24 and pass through the beam exit opening 18 to the workpiece 2 in the region of the forming zone 17.
  • a length-variable, multi-part bending die arrangement 3 can be formed by lining up a number of bending dies 7.
  • the radiation outlet opening 18 is in the simplest case a slot that extends over the entire Gesenkin from the radiation sources 22 and the Strahlbeeinpoundungsan extract 23 to the bending recess 12, but can not be continuous, such as by locally spacer elements between the legs of the substantially U- shaped cross-section of the tool body 8 are provided.
  • Fig. 2 shows a section along line II - II in Fig. 1 by a first possible embodiment variant of a bending die arrangement 3 for carrying out the bending process according to the invention.
  • this example comprises only one bending die 7, the Gesenkfur 25 is greater than the bending length 21 of a workpiece to be bent 2. If the bending length 21 is greater than the Gesenkfur 25, so could by attaching a second such Biegegesenks 7b to a first such Biegegesenk 7a an overall length of the Biegegesenkan extract 3 are effected, which exceeds the bending length 21 of a workpiece 2 again and thus bending of larger workpieces 2 is possible.
  • the tool base body 8 which preferably has outer dimensions that correspond to conventional bending dies, is located in an inner cavity, ie inside the Biegegesenkan für 11
  • the radiation sources 22a to 22e are preferably formed by diode laser bars 26, each having elongate and approximately parallel to the bending line 16 oriented beam exit surfaces 27.
  • the longitudinal dimension of the beam exit surface 27 corresponds at least approximately to the bar width 28, which together with the distance 29 between adjacent diode laser bars 26 and the number of installed diode laser bars 26 determines approximately the possible Gesenkonne 25.
  • the diode laser bars 26 may be fastened individually in the main tool body 8 or else be combined to form a diode laser insert which forms a coherent module and can be fastened in the tool base body 8 in an easily replaceable manner.
  • Such diode laser bars 26 comprise electrically and optically combined groups of laser diodes which emit laser radiation and as in Fig. 2 are arranged on a workpiece 2 facing the end of such a strip-shaped diode laser bar 26 and give their laser radiation substantially in the longitudinal direction of such a strip - in Fig. 2 upwards - down.
  • the radiation power of such a diode laser bar 26 is made up of the sum of the individual powers of the laser diodes, which are electrically parallel and generally mounted on a heat sink or a heat sink, which forms the main body of the strip-shaped diode laser bar 26.
  • Such strip-like arrangements of the laser diodes are also referred to as edge-emitting broadband chips and can both in the modes continuous wave (continuous wave) in which a laser diode continuously emits a laser beam without interruption or be used pulsed in the mode in which temporally short laser beam pulses are delivered.
  • the diode laser bars 26 comprise, for example, each 45 individual emitters and have an optical output power in a range of 150 watts to 250 watts, with special designs even higher power per diode laser bar 26 are possible.
  • the bar width is for example about 11 mm and the laser radiation emitting area has an emitter width of about 10 mm.
  • diode laser bars 26 can thus be used with a small spatial spacing of the adjacent diode laser bars 26 to each other in a bending die 7 with a Gesenklength 25 of, for example, 100 mm eight such diode laser bars 26.
  • the wavelength of the emitted laser radiation is, for example, 940 nm, but depending on the doping of the semiconductor of the laser diodes, other wavelength ranges such as 635-700 nm; 780-1000 nm and 1250-1700 nm wavelength possible, whereby it is largely infrared radiation, ie located outside the visible range spectral ranges.
  • Each diode laser bar 26 has a pointing in the direction of the beam exit opening 18 beam exit surface 27, at which the laser beams generated by the individual laser diodes of a diode laser bar 26 laser substantially all at least approximately in the parallel direction and form by the uniform arrangement of the laser diodes a fan 24, consisting of a Row of at least approximately parallel laser beams consists. Since the individual diode laser bars 26 are mounted along the bending recess 12 behind the radiation outlet opening 18, in this case below the slot-shaped radiation outlet opening 18 in a common plane, the fan beams 24 radiated by the individual diode laser bars 26 are also at least approximately in a plane which also acts as a radiation plane can be designated. This level is in Fig.
  • a juxtaposition of several diode laser bars 26 with lying in a plane and at the same time to each other approximately parallel fan beams 24 to a diode laser insert is also referred to as a horizontal stack.
  • the laser beams emitted from the laser diodes do not have the shape of geometrically exact lines (Z-direction), but may have different beam expansion due to the generally asymmetric shape of the active emitter region in both the X and Y directions, and the output beam may also be can be astigmatic, whereby the beam waist with respect to the X-direction and the Y-direction at different Be located, creates an inevitable beam expansion, which, however, can be counteracted by suitable optical components.
  • diode laser bars 26 without influencing the beam quality, optical elements.
  • Fig. 2 this expansion of the individual beams is indicated by beam fans 24 expanding in the direction of propagation, wherein a beam expansion within a beam plane may also be advantageous for the purpose of heating a workpiece, since the uniformity of the total radiation intensity impinging on the workpiece 2 is increased by suitable superposition of such beam fans 24 can.
  • the use of diverging laser beams or beam fans 24 is also advantageous in terms of safety at work, since laser radiation emerging from the environment of the bending die arrangement 3, which can also be referred to as leakage radiation, quickly loses intensity with increasing distance and thereby the risk potential for operating personnel also decreases in this area.
  • Fig. 2 indicated widening of the fan beams 24 within the beam plane, which here coincides with the bending plane 15, so far serves the uniformity of the total radiation intensity at the workpiece 2, since no radiant power is emitted in the spaces between two adjacent beam exit surfaces 27 of adjacent diode laser bars 26, and thereby at strictly parallel Beam spread areas of the forming zone 17 above these spaces may be less heated, which could affect the bending quality.
  • the light exit surface 27 of the diode laser bars 26 extends at least approximately over the entire bar width 28 and between adjacent diode laser bars 26 as small spaces or distances 29 are provided.
  • the diode laser bars 26 are thus in the longitudinal direction of the bending recess 12 as closely as possible behind the beam exit opening 18 and arranged as evenly as possible.
  • Fig. 2 shows a fitted with five diode laser bars 26 bending die assembly 3.
  • the individual diode laser bars 26 are attached, which may be formed on the mounting surface opposite these protruding projections webs, the exact positioning of the diode laser bars 26 with the same Clearances that correspond substantially to the width of the webs facilitate.
  • a diode laser bar 26 which can be used for this embodiment of a bending die 7 comprises, for example, a strip-shaped heat sink 30, which is designed in particular as a micro channel cooler 31.
  • a micro channel cooler 31 consists of a layering of highly heat-conductive metal sheets, in which a plurality of channels are formed, which can be flowed through by a cooling liquid and thereby enable a high heat dissipation from the diode laser bars 26.
  • the supplied electrical energy can not completely convert into radiation 19, but always a certain amount of heat loss is produced, which transported by means of the heat sink 30 of the laser diode array 32 must be to prevent overheating of the semiconductor elements contained therein.
  • the supply of electrical energy to a diode laser bar 26 and the laser diode array 32 arranged thereon takes place in the form of direct current or pulsed, rectified alternating current, wherein in the illustrated embodiment, the heat sink 30 acts as a positive pole and separated by an insulating layer of the negative pole in the form of a the heat sink 30 patch contact plate is executed.
  • the optional activation of the radiation sources 22a to 22e according to the invention is carried out by circuitry measures or switches of any design by which the respective radiation sources 22, ie in this embodiment, the diode laser bars 26 are connected to the power supply or separated from it.
  • the two left radiation sources 22a and 22b are deactivated, ie not connected to the power supply and only those below the Workpiece 2 located radiation sources 22c to 22e activated, which locally heat the forming zone 17 of the workpiece 2 with the emitted fan beams 24c, 24d and 24e.
  • the individual fan beams 24c, 24d and 24e thereby propagate within a common beam plane and overlap in their edge region, whereby the radiation intensities of two adjoining fan beams 24 add up in these edge regions and thereby a beam intensity falling from the center of a fan beam 24 to its edge region is balanced by the superposition of the edge regions of two adjacent fan beams 24, the total radiation intensity in the interspaces above two adjacent radiation sources 22 has a sufficient height.
  • the energy-rich radiation 19 can be introduced into the deformation zone 16 of a workpiece 2 at a sufficiently high and at least approximately uniform intensity over the entire bending length 21 of a workpiece 2.
  • One way to connect individual radiation sources 22 with the power supply or to separate from this, is to electrically connect adjacent diode laser bars 26 in series and to disable individual diode laser bars 26 to the current not through the laser diode array 32, but by means of contact elements similar a bypass from one pole directly to the corresponding pole of an adjacent diode laser bar 26 forward.
  • Fig. 3 Such a circuit of diode laser bars 26 is in Fig. 3 simplified and shown schematically.
  • Fig. 3 shows three diode laser bars 26a, 26b, 26c connected in series with laser diode arrays 32a, 32b and 32c.
  • Each radiation source 22 in the form of a diode laser bar 26 comprises a heat sink 30, here approximately in the form of a micro channel cooler 31, which acts as a positive pole 33 for the laser diode arrangement 32 and a contact plate 34, which is likewise connected to the laser diode arrangement 32 and serves as a negative pole 35.
  • the positive pole 33 which is conductively connected to the laser diode arrangement 32, and which likewise has the laser diode arrangement 32 conductive negative pole 35 are galvanically isolated, for example, as in Fig. 3 indicated by means of an insulating layer 36th
  • the connecting element 37a connects the positive pole 33a of the diode laser bar 26a to the negative pole 35b of the diode laser bar 26b, whereby a current flow from the first diode laser bar 26a to the second diode laser bar 26b is possible.
  • the current is forwarded in sequence via the connecting element 37b from the second diode laser bar 26b to the third diode laser bar 26c.
  • Each laser diode array 32 which has current flowing through it, emits a fan beam 24, that is, in order to deactivate the transmission of fan beams 24 at individual radiation sources 22 in such a series connection of diode laser bars 26 or general radiation sources 22, it must be ensured that the transmission of the current to the next diode laser bar 26 is not carried out via the laser diode array 32 to be deactivated, but by a contact element 38, which may also be referred to as a bridging element.
  • Fig. 3 For the sake of simplicity, only one contact element 38 is shown, which establishes an electrical connection between the positive pole 33a of the first diode laser bar 26a and the positive pole 33b of the second diode laser bar 26b in a contact position shown in solid lines. In this contact position, only a very small current flows via the connecting element 37a through the laser diode arrangement 32b, which is why it is deactivated in the contact position of the contact element 38 and does not emit a fan beam 24. In the neutral position of the contact element 38 shown in dashed lines there is no direct bridging between the diode laser bars 26a and 26b, so that the laser diode array 32b is traversed by current and emits a fan beam 24.
  • the contact element 38 can take a variety of forms and must only be suitable for transferring considerable currents beyond 200 amps without damage. Notwithstanding the in Fig. 3 arrangement shown, it is further possible to arrange and form the contact element 38 so that a direct contact between approximately positive pole 33a and connecting element 37b, between connecting element 37a and connecting element 37b or between connecting element 37a and positive pole 33b. A contacting of the negative poles 34 is conceivable.
  • the contact element 38 thus effectively acts as a bypass element, which forms a bypass to the supply to the laser diode array 32 to be deactivated by the supply current.
  • the one or more contact elements 38 can be adjusted in particular by means of an adjusting device, not shown, for example with piezo actuators, between neutral position and contact position, whereby the selective activation and deactivation of the respective laser diode arrays 32 and thus the radiation sources 22 in the form of diode laser bars 26 can be made.
  • the control of the individual contact elements 38 can in particular also be effected by means of a control device, wherein the control device can also be provided simultaneously for the control of the bending machine or the press brake.
  • Fig. 4 is a section through a bending die assembly according to the invention 3 according to line IV-IV in Fig. 1 illustrated, which is used for bending workpieces 2 according to the second variant of the method according to the invention, and which is composed in the illustrated embodiment of three juxtaposed bending dies 7a, 7b and 7c.
  • a concentrated beam 40 emitted from an external radiation source 39 arranged outside the bending die arrangement 3 is introduced through a beam entry opening 41 into the first bending die 3a or its tool base 8a and along a beam path 42 in the interior of the bending die assembly 3 through all the bending dies 7a. 7b, and 7c.
  • the beam 40 is divided in the first bending die 7a by means of a first beam influencing arrangement 23a into a first partial beam 43a and a second partial beam 43b.
  • the first partial beam 43a is deflected by means of the beam influencing arrangement 23a, converted into a beam fan 24a and directed to the workpiece 2, while the second partial beam 43b leaves the tool base 8a of the first bending die 7a through a beam passing opening 44 and directly through a subsequent beam entry opening 41 of the second bending die 7b is introduced into its tool base body 8b and here likewise split or divided into two partial beams 43c and 43d by means of the beam influencing arrangement 23b of the second bending die 7b.
  • the partial beam 43c is deflected, formed into a fan beam 24b and is also directed to the workpiece 2 above the second bending die 7b.
  • the partial beam 43d is forwarded by the beam influencing arrangement 23b to the next bending die 7c, where it is completely deflected by the beam influencing arrangement 23c, spread to a beam fan 24c and directed to the workpiece 2 above the bending recess 12 of the third bending die 7c.
  • the Biegegesenkan himself can be further extended by at least one further subsequent Biegegesenk 7d, wherein in such an embodiment of a Biegegesenkanaku 3, the beam influencing arrangements 23a, 23b and 23c each comprise a beam splitter element 45, a Strahlumlenkelement 46 and a beam-shaping element 47, each decouple a first partial beam 43a or 43c or 43e and deflect it to the workpiece 2 and transform it into a beam fan 24 and a second partial beam 43b or 43d or 43f along the beam path 42 through beam forwarding openings 44 to the next bending die 7b and 7c, respectively 7d forward.
  • the maximum length of such a bending die assembly 3 is limited by the total power of the introduced beam 40 and the per Biegegesenk 7 for sufficient heating of the overlying portion of the workpiece 2 required partial beam power.
  • the last bending die 7 of such a bending die arrangement 3 comprising a plurality of juxtaposed bending dies 7 with beam influencing arrangements 23 can either have a beam influencing arrangement 23 which either deflects the partial bundle 43 introduced from the preceding bending die 7 completely in the direction of the workpiece 2 and no further sub-bundle bundles 42 or if Also, a partial beam 43 is passed from the last bending die 7 with a beam influencing arrangement 23, a termination element is to be provided which can absorb this last forwarded partial beam 43 without adverse effects.
  • the closure element may be formed as a solid metal object, in which the last and not led to the workpiece 2 partial beam is introduced into its interior and after multiple reflection in its interior is at least approximately completely absorbed by this.
  • the coupled out of the beam 40 and deflected in the direction of the workpiece 2 partial beams 43a, 43c, 43e are by means of beam shaping elements 46 which are also part of the beam influencing arrangement 23, converted into a fan beam 24 or expanded.
  • the shutter influencing arrangement 23 can also be formed by a single, optical element which can simultaneously act as a beam splitter element 45, beam deflecting element 46 and as beam shaping element 47.
  • the beam splitter element 45 can be formed, for example, by a semitransparent plane mirror, a prism or other reflective and beam-splitting surface with corresponding orientation, while the beam-shaping element 46 can be formed by a lens, a convex mirror or concave mirror, wherein for fanning out to a plane beam fan 24 preferably cylindrical optical elements are used, which have a curvature only in one direction and at right angles to this direction have no or only relatively small curvature. Alternatively, the fanning of the radiation and the use of Powell lenses is possible.
  • the beam splitter element 45 comprises, for example, a beam splitter plate, a polarization filter, a beam splitter cube, an FTIR beam splitter or optical elements with utilization of photoelastic or electro-optical effects.
  • the effect of the beam splitting can be effected by optically active materials, such as in polarizing filters or by beam splitter layers, such as in a beam splitter cube, with which an intensity distribution of the incoming beam is achieved.
  • Such intensity beam splitters can separate light beams with one wavelength or also polychromatic light beams into a transmitted and a reflected portion, wherein different division ratios are possible.
  • Beam splitter layers can be formed by metallic layers or dielectric multilayers, with dielectric multilayers, with the use of polarization effects, being well suited for the method according to the invention.
  • beam splitter plates consist of a plane-parallel plate of glass, quartz or a uniaxial crystal with a dielectric or metallic coating. Due to the thickness of the beam splitter plates, the transmitted beam experiences a slight beam offset.
  • Beam splitter cubes are made from two 90 ° prisms cemented to their hypotenuses, the beam splitting coating being attached to a hypotenuse and a transmitted beam not being misaligned.
  • FTIR beam splitter elements work on the principle of "Frustrated Total Internal Reflection" by utilizing reflection and Absorbtions binen on beam splitter cubes with an air gap between two 90 ° prisms, this shape of a beam splitter is well suited by adjusting the air gap to a controllable beam splitting cause, for example by means of piezo actuators, which can adjust the prisms of the beam splitter relative to each other and thereby change the air gap or by direct formation of the prisms of optically transparent piezoelectric material, for example LiNbO3, which can be influenced by applying a voltage in its dimension.
  • piezo actuators which can adjust the prisms of the beam splitter relative to each other and thereby change the air gap or by direct formation of the prisms of optically transparent piezoelectric material, for example LiNbO3, which can be influenced by applying a voltage in its dimension.
  • Fig. 4 shows the adaptation of the radiation 19 to the bending length 21 of a workpiece 2 by juxtaposition of three bending dies 7a, 7b, 7c, whereby the Gesenkfur 25 of the entire Biegegesenkan für 3 results as the sum of Gesenkinn 25a, 25b and 25c.
  • the entire Gesenkl length 25 of a single bending die 7 can be used by a fan beam 24 of corresponding width for a bending operation.
  • the Biegegesenkaniser angel 3 may also be formed by a single Biegegesenk 7.
  • Fig. 5 shows a partial section through a Biegegesenkan für 3, for example, according to the embodiments in Fig. 2 or Fig. 4 or similar design, with a measure to increase safety at work in the environment of a bending die assembly 3 according to the invention, which can also be used when using individual bending dies 7.
  • the radiation exiting through the radiation outlet opening 18 into the bending recess 12 is in this case at least partially absorbed by the shielding element 49 or reflected back into the interior of the bending die 7.
  • the underside of the shielding element 49 may additionally have a deflecting or dissipative surface, as a result of which the reflected radiation continues to decrease in intensity and is distributed over larger areas of the interior of the die.
  • the shielding element 49 can advantageously be adjustable in the direction of the arrow 52 by means of an adjusting device 51 of the shielding device 50.
  • Such a shielding element 49 could additionally also on in Fig. 5
  • the abutment of the shielding element 48 on the workpiece 2 to be bent can be ensured by approaching the workpiece 2 with a certain minimum force, wherein additionally a mechanical, electrical or optical interrogation of the workpiece contacting and thus the complete shielding of the subsection 48 is ensured can.
  • This can be done, for example, in that the shielding element 49 has a check mark 54 at its end facing the workpiece 2 at its upper side, which is monitored by an optical sensor, not shown, mounted above the bending die arrangement 3 or a camera with a connected image recognition, and upon displacement of the check mark 54 on the shielding element 49 under the edge of the workpiece 2 from above through the sensor is no longer detectable, which means that the shielding element 49 rests against the workpiece 2.
  • the end portion with the test mark 54 has a notch in the region of the bending line 16 so that it can be irradiated at the edge of the workpiece 2 of the high-energy radiation.
  • the shielding element 49 or the entire shielding device 50 in the direction of the double arrow 55 can be mounted resiliently or articulated, whereby the shielding member 49 can be pressed together with the workpiece 2 in carrying out a bending operation in the interior of the bending recess 12 and thereby does not hinder the bending operation ,
  • the shielding device 50 may, as in Fig. 5 represented by means of a holding member 56 may be attached directly to the Biegegesenkan für Fig. 5 represented by means of a holding member 56 may be attached directly to the Biegegesenkan für Fig. 5 represented by means of a holding member 56 may be attached directly to the Biegegesenkan für Fig. 5 represented by means of a holding member 56 may be attached directly to the Biegegesenkanaku 3.
  • Fig. 6 shows schematically and greatly simplified a bending press 57, in particular a press brake of conventional design, on the use of the bending die assembly 3 according to the invention, the inventive method for bending a workpiece 2 can be performed.
  • the bending machine 54 comprises a fixed frame 58, for example with C-stands, on which the lower stationary press bar 4 is arranged and further by means of Linearverstellantrieben 59, approximately in the form of hydraulic cylinders, and corresponding guide means an upper press bar 60 for performing a bending operation in the adjustment 6th is mounted adjustable.
  • the bending die assembly 3 according to the invention is arranged on the lower, stationary press bar 4 and the cooperating bending punch 5 is mounted on the upper, adjustable press bar 6.
  • the bending press 57 is actuated by means of a control device 61, which can also control, in particular, also the method steps associated with the method according to the invention or associated with the bending die 3 according to the invention. These include, for example, the control, supply, activation, power control or deactivation of the radiation sources 22 and 39 for generating the beam fan 24, with which a workpiece 2 is heated before and / or during the implementation of a bending process in the region of its forming zone 17.
  • the radiation 19 can be at least partially adapted to the workpiece 2 to be bent by the execution of the bending dies.
  • a leakage of radiation that could injure a person in the vicinity of the bending press 57, already in the field of Biegegesenkan für 3, such as by using the shielding device 50 described to avoid as possible.
  • a leakage radiation 62 which unexpectedly emerges from the bending die arrangement 3 and is not absorbed by the workpiece 2 is detected by means of suitable sensor elements 63 or can be measured and upon detection of an optionally existing impermissibly strong leakage radiation 62 by the control device 61, a deactivation of the high-energy radiation 19 is performed.
  • a detection method dangerous radiation can be detected and deactivated directly for a person in the vicinity of the bending die arrangement 3.
  • This detection method for leakage radiation 62 can in particular also take place with a harmless test radiation with low energy density, for example by light in the visible region, which is generated by suitable elements within the bending die arrangement 3.
  • a test radiation could also be generated by applying radiation sources 22 in the form of diode laser bars 26 with only a small supply current, whereby only low-energy radiation, similar to light-emitting diodes, is emitted.
  • the measured value of a temperature measurement of the control device 61 are supplied, which can perform based on the measured temperature value activation, deactivation or power control of the radiation sources 22, 39 or block a bending process by influencing the Linearverstellantriebes 59, enable, trigger, accelerate or delay .
  • the temperature measurement is carried out by suitable measuring methods, for example, contactless or by contacting temperature measurement of the forming zone 17. As an example of a non-contact measuring method is in Fig.
  • a camera 64 in the form of a thermal imaging camera shown with the control device 61 connected is.
  • pre-programmed bending processes can be stored, which also contain the workpiece-specific heating by means of the radiation.
  • suitable heating processes can be predefined and automatically carried out for different types of workpieces in addition to the actual bending process.
  • Fig. 7 shows a cross section through a bending tool assembly 1, during the execution of the bending process according to the invention.
  • the radiation 19, which heats the forming zone 17 of the workpiece is here generated by a radiation source 22, for example in the form of a diode laser bar 26 in the interior of the bending die arrangement 3 and guided in the form of one or more fan beams 24 to the workpiece 2.
  • a radiation source 22 for example in the form of a diode laser bar 26 in the interior of the bending die arrangement 3 and guided in the form of one or more fan beams 24 to the workpiece 2.
  • Fig. 7 is the beam plane 65, in which the fan beams 24 are substantially not exactly in the bending plane 16, but between the beam plane 65 and the bending plane 16 is a helix angle 66, which is preferably between 2 and 15 °.
  • a cutting line 67 results between the bending plane 16 and the plane of the beam 65, which preferably lies within the bending recess 12, that is to say below the contact surface 11.
  • the tip of the punch 5 is located above the contact surface 11, in the sketched orientation of the beam plane 65 it is ensured that radiation emerging from the bending die arrangement 3 that does not hit the workpiece 2 hits the left flank 69 of the illustrated punch 5 and in this Case is mainly deflected to the left or reflected.
  • This effect of the inclination of the beam plane 65 to the bending plane 16 can be advantageously used to deflect, if necessary, not incident on the workpiece 2, high-energy radiation 19 away from the normal residence area of an operator away by such radiation from the operator's point of view of the user side 70th seen from, averted flank 69 of the punch 5 hits.
  • An advantageous embodiment of the method according to the invention is that the workpiece 2 before the start of the irradiation for local heating of the forming by means of a holding element, in particular by means of the punch 5 is fixed in its position relative to the Biegegesenkan für 3, for example by the bending punch 5 is pressed with a limited force on the resting on the contact surface 11 workpiece 2.
  • the fixing force used for this purpose is only a relatively small part of applied for the actual bending process forming force, but causes the workpiece 2 does not change its position with respect to the Biegegesenkan für 3 due to thermal stresses and consequent distortion and the deformation of the workpiece 2 exactly on the planned position.
  • the workpiece 2 can, similar to in Fig.
  • the resulting change in the beam path to determine the distribution of the radiation intensity along the bending length 21 so that the uniformity of the radiation distribution does not have its optimum at the level of the contact surface 11, but in a later phase of deformation, so for example only after a third or half of the immersion depth of the punch 5, such as it about in Fig. 7 is shown.
  • Fig. 7 further shows a thermocouple 71, which is resiliently mounted within the bending recess 12, is connected to the control device 61 of the bending press 57, and serves to measure the temperature of the forming zone 17 during heating by the high-energy radiation 19.
  • the bending die assembly 3 can further be designed so that the tool body 8 a the contact surface 11 and the bending recess 12 forming, in Fig. 7 indicated by dashed lines, die adapter 72, on which the radiation sources 22nd or the beam influencing arrangements 23 containing remaining part of the tool body 8 is arranged interchangeable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (15)

  1. Procédé de pliage d'une pièce plate (2) avec émission d'un rayonnement (19) énergétique, plus particulièrement un rayon laser, sous la forme d'au moins un éventail à rayons (24) constitué d'un évidement de pliage (12) d'un dispositif à matrice de pliage (3) comprenant au moins une matrice de pliage (7) sur une pièce à plier (2), s'appuyant contre une surface d'appui (11) de l'au moins une matrice de pliage (7), pour le chauffage local de celle-ci avant et/ou pendant un processus de pliage, caractérisé en ce que cet éventail à rayons (24) ou ces éventails à rayons (24a, 24b) sont constitués de plusieurs sources de rayonnement (22a, 22b) disposées à l'intérieur du dispositif à matrice de pliage (3) le long de l'évidement de pliage (12) et pouvant être activées de manière sélective ou bien réalisés par la répartition d'au moins une source de rayonnement (39) disposée à l'extérieur de la matrice de pliage (7a, 7b) dans les faisceaux (40) concentrés entrant dans le dispositif à matrice de pliage (3) par plusieurs dispositifs d'action sur le rayonnement (23a, 23b) à l'intérieur de la matrice de pliage (7a, 7b) et le rayonnement sortant (19) est adapté par les éventails à rayons (24, 24a, 24b) à la longueur de pliage (21) de la pièce à plier (2).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une adaptation de la longueur de la matrice (25) du dispositif à matrice de pliage (3) à la longueur de pliage (21) d'une pièce à plier (2) est effectuée par une série de matrices de pliage (7).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le rayonnement (19) est limité, par un blindage contrôlé à l'aide d'un élément de blindage (49) du dispositif de matrice de pliage (3), à la longueur de pliage (21) d'une pièce à plier (2), plus particulièrement à une section partielle (48) de l'évidement de pliage (12).
  4. Procédé selon la revendication 3, caractérisé en ce que l'élément de blindage (49) est réglable en direction de la longueur de pliage (21) jusqu'à s'appuyer contre la pièce (2).
  5. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, avant l'activation du rayonnement (19), l'appui de l'élément de blindage (49) contre le bord de la pièce (2) est contrôlé mécaniquement ou sans contact.
  6. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de blindage (49) comprend, au niveau de sa partie inférieure, une surface réfléchissante et/ou une surface convexe diffusant les rayonnements et/ou est muni d'un dispositif de surveillance de la température.
  7. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'un foyer du rayonnement (19), formé par au moins un composant optique du dispositif à matrice de pliage (3), se trouve devant la surface d'appui (11) à l'intérieur de l'évidement de pliage (12), le rayonnement sortant (19) sortant ainsi du dispositif à matrice de pliage (3) de manière divergente.
  8. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, sur la pièce à déformer (2), au moins à un endroit, de préférence à plusieurs endroits, de la zone de déformation (17), sa température est mesurée pendant le chauffage.
  9. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la densité de puissance et/ou la durée d'action du rayonnement est adapté au matériau et/ou aux dimensions géométriques de la pièce à plier (2) à l'aide d'un dispositif de commande (61).
  10. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la pièce (2) est soumise, avant l'action du rayonnement (19) à travers le poinçon de pliage (5), à une déformation par pliage faible, plus particulièrement uniquement élastique et est fixé dans cette position par le poinçon de pliage (5) puis le chauffage est activé sur la partie inférieure (20) de la pièce (2) par émission d'un rayonnement (19) et, après l'écoulement d'un laps de temps prédéfini à compter de l'activation du rayonnement (19), qui peut également être nul, ou à partir du moment où la pièce (2) a atteint une température définie dans la zone de déformation (17), la déformation par pliage est continuée, le rayonnement (19) restant activé jusqu'à ou juste avant la fin de la déformation par pliage.
  11. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, pendant le chauffage par le rayonnement (19), la température de la pièce (2) est mesurée au niveau de la zone de déformation (17) et est introduite en tant que valeur de mesure dans le dispositif de commande (61), qui bloque, autorise, déclenche, accélère ou retarde un processus de pliage en fonction de la température mesurée et/ou augmente, réduit ou désactive la puissance du rayonnement en activant ou en désactivant la régulation de puissance des sources de rayonnement (22) du dispositif à matrice de pliage (3) ou de la source de rayonnement externe (39).
  12. Dispositif à matrice de pliage (3), plus particulièrement dispositif de pliage en forme de V pour la réalisation du procédé selon la revendication 1, comprenant au moins une matrice de pliage (7) avec un corps de base d'outil (8) et une surface d'appui (11) pour l'appui d'une pièce (2) à plier à l'aide d'un poinçon de pliage (5), avec un évidement de pliage (12) en forme de rainure dans la surface d'appui (11) et au moins une ouverture de sortie de rayonnement (18) s'étendant le long de l'évidement de pliage (12), dans l'évidement de pliage (12), pour l'émission d'un rayonnement énergétique (19), plus particulièrement un rayon laser, sous la forme d'un éventail à rayons (24) vers une pièce (2) s'appuyant contre la surface d'appui (11) pour le chauffage de la zone de déformation (17) de la pièce (2) caractérisé en ce que, à l'intérieur du dispositif à matrice de pliage (3), se trouvent plusieurs sources de rayonnement (22), plus particulièrement des barres de diodes laser (26), pouvant être activées ou désactivées de manière sélective et disposées au moins approximativement de manière uniforme le long de l'évidement de pliage (12) derrière l'ouverture de sortie du rayonnement (18) dans le corps de base de l'outil (8).
  13. Dispositif à matrice de pliage (3), plus particulièrement dispositif de pliage en forme de V pour la réalisation du procédé selon la revendication 1, comprenant au moins une matrice de pliage (7) avec un corps de base d'outil (8) et une surface d'appui (11) pour l'appui d'une pièce à plier (2), avec un évidement de pliage (12) en forme de rainure dans la surface d'appui (11) et au moins une ouverture de sortie de rayonnement (18) s'étendant le long de l'évidement de pliage (12), dans l'évidement de pliage (12), pour l'émission d'un rayonnement énergétique (19), plus particulièrement un rayon laser, sous la forme d'un éventail à rayons (24) vers une pièce (2) s'appuyant contre la surface d'appui (11) pour le chauffage de la zone de déformation (17) de la pièce (2) caractérisé en ce que le dispositif à matrice de pliage (3) comprend au moins une ouverture d'entrée de rayonnement (41) pour l'introduction d'au moins un faisceau (40) énergétique concentré produit par une source de rayonnement (39) disposé à l'extérieur du dispositif à matrice de pliage (3), ainsi qu'au moins un trajet de rayonnement (42) adjacent à l'ouverture d'entrée de rayonnement (41) et, sur le trajet de rayonnement (42) à l'intérieur du dispositif à matrice de pliage (3), se trouvent plusieurs dispositifs d'actions sur le rayonnement (23a, 23b), qui décalent une partie du faisceau (40) de manière temporelle et de manière spatialement fixe, l'élargissent en éventails de rayons (24a, 24b) et le guident à travers l'ouverture de sortie des rayons (18) vers la pièce (2) au niveau de la zone de déformation (17).
  14. Dispositif à matrice de pliage (3) selon la revendication 12 ou 13, caractérisé en ce que, sur le dispositif à matrice de pliage (3) entre l'ouverture de sortie du rayonnement (18) et la surface d'appui (11), est prévu au moins un élément de blindage réglable (49) permettant de recouvrir les sections partielles (48) de l'évidement de pliage (12) non recouvertes par la pièce (2).
  15. Dispositif à matrice de pliage (3) selon l'une ou plusieurs des revendications 12 à 14, caractérisé en ce que le corps de base d'outil (8) comprend un adaptateur de matrice (72) formant la surface d'appui (11) et l'évidement de pliage (12), qui est disposé de manière amovible sur la partie restante du corps de base d'outil (8) comprenant les sources de rayonnement (22) ou les dispositifs d'action sur les rayons (23).
EP10739461.1A 2009-06-29 2010-06-29 Procédé et dispositif de pliage d'une pièce Not-in-force EP2448689B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT10082009A AT508355B1 (de) 2009-06-29 2009-06-29 Verfahren und vorrichtung zum biegen eines werkstücks
PCT/AT2010/000237 WO2011000013A1 (fr) 2009-06-29 2010-06-29 Procédé et dispositif de pliage d'une pièce

Publications (2)

Publication Number Publication Date
EP2448689A1 EP2448689A1 (fr) 2012-05-09
EP2448689B1 true EP2448689B1 (fr) 2015-02-25

Family

ID=42753001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10739461.1A Not-in-force EP2448689B1 (fr) 2009-06-29 2010-06-29 Procédé et dispositif de pliage d'une pièce

Country Status (4)

Country Link
US (1) US9003847B2 (fr)
EP (1) EP2448689B1 (fr)
AT (1) AT508355B1 (fr)
WO (1) WO2011000013A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8420801B2 (en) 2010-01-08 2013-04-16 Roche Molecular Systems, Inc. Recovery of nucleic acids from magnetic glass particles
AT513467B1 (de) 2012-09-26 2014-07-15 Trumpf Maschinen Austria Gmbh Verfahren zum Biegen eines Werkstücks
WO2015146591A1 (fr) * 2014-03-27 2015-10-01 プライムアースＥｖエナジー 株式会社 Dispositif de soudage laser, procédé de soudage laser et boîtier de batterie
US20190119768A1 (en) * 2016-05-04 2019-04-25 Magna International Inc. Hot forming tool with infrared light source
AT520541B1 (de) * 2018-05-07 2019-05-15 Trumpf Maschinen Austria Gmbh & Co Kg Unterwerkzeug mit Reibreduktionsvorrichtung
WO2020096744A1 (fr) * 2018-11-05 2020-05-14 Cincinnati Incorporated Outils imprimés en 3d et procédés associés
CN109746325A (zh) * 2019-02-16 2019-05-14 马鞍山市维尔达机械模具制造有限公司 一种柔性化开口可调式双折边液压机模具
CN115172239B (zh) * 2022-07-14 2023-05-02 先之科半导体科技(东莞)有限公司 一种半导体二极管成型装置
BE1031741B1 (nl) * 2023-06-27 2025-02-04 Newson Nv Lichtrichtapparaat met verbeterd temperatuurbeheer
CN117531879B (zh) * 2023-11-27 2024-09-10 哈尔滨工业大学 一种镁合金板材电流辅助弯曲成形方法
CN120306482B (zh) * 2025-06-10 2025-09-19 成都工业职业技术学院 一种多孔位冲孔装置及其控制方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740996A (en) * 1971-03-17 1973-06-26 A Hix Press brake die structure incorporating gate means
CH651767A5 (fr) 1982-11-05 1985-10-15 Cybelec Sa Procede de pliage d'une tole a l'aide d'une presse plieuse.
JPH01233019A (ja) 1988-03-11 1989-09-18 Kobe Steel Ltd 金属板のプレス成形方法
JPH02280930A (ja) 1989-04-21 1990-11-16 Nissan Motor Co Ltd ヘム成形方法
DE4228528A1 (de) 1991-08-29 1993-03-04 Okuma Machinery Works Ltd Verfahren und vorrichtung zur metallblechverarbeitung
JP3295109B2 (ja) 1991-10-02 2002-06-24 株式会社アマダ 曲げ加工装置
DE19514285C1 (de) * 1995-04-24 1996-06-20 Fraunhofer Ges Forschung Vorrichtung zum Umformen von Werkstücken mit Laserdiodenstrahlung
US5714662A (en) * 1995-08-10 1998-02-03 Uop Process for producing light olefins from crude methanol
AT407615B (de) 1997-07-02 2001-05-25 Inst Spanlose Fertigung Und Ho Verfahren zum biegen mit laserunterstützung
AT411023B (de) * 2001-04-04 2003-09-25 Inst Spanlose Fertigung Und Ho Laserunterstütztes tiefziehen mit halbleiterlasern und festkörperlasern
JP4334181B2 (ja) 2002-04-22 2009-09-30 株式会社アマダエンジニアリングセンター 板材曲げ加工方法および装置
JP2004034074A (ja) 2002-07-02 2004-02-05 Amada Eng Center Co Ltd 曲げ加工方法、曲げ加工機、及び温間金型装置
EP1961502B1 (fr) 2007-02-23 2014-10-22 Bystronic Laser AG Procédé et dispositif destinés au pliage de pièces

Also Published As

Publication number Publication date
US20120160002A1 (en) 2012-06-28
AT508355B1 (de) 2011-01-15
AT508355A4 (de) 2011-01-15
EP2448689A1 (fr) 2012-05-09
WO2011000013A1 (fr) 2011-01-06
US9003847B2 (en) 2015-04-14

Similar Documents

Publication Publication Date Title
EP2448689B1 (fr) Procédé et dispositif de pliage d'une pièce
EP2448688B1 (fr) Dispositif et procédé de pliage de pièce
EP2113332B1 (fr) Procédé et dispositif pour l'usinage et/ou assemblage de pièces avec des lasers de puissance et pilote et au moins un élément optique diffractant
EP2478990B1 (fr) Procédé de réglage d'un spot de lumière laser pour le traitement laser de pièces et dispositif destiné à l'exécution du procédé
AT508357B1 (de) Verfahren und vorrichtung zum laserunterstützten biegen von werkstücken
DE102011054941B3 (de) Vorrichtung und Verfahren zur Korrektur der thermischen Verschiebung der Fokuslage von über Optiken geführten Laserstrahlen
EP2667998B1 (fr) Machine de traitement au laser ainsi que procédé permettant de centrer un faisceau focalisé
EP3525975B1 (fr) Procédé et dispositif pour la détermination et la régulation d'une position focale d'un faisceau d'usinage
EP2429755B1 (fr) Dispositif et procédé permettant l'usinage périphérique au laser d'un cordon de matière
WO2004020141A1 (fr) Unite de formation de faisceau possedant deux lentilles axicon et dispositif pourvu de ladite unite permettant d'introduire de l'energie de rayonnement dans une piece constituee d'un metal peu absorbant
DE102009020272B4 (de) Laserschweißsystem
DE112006000858T5 (de) Laserschweisssystem
DE102008045778A1 (de) Laserstrahlanlage
EP3755491A1 (fr) Tête d'usinage au laser servant au soudage laser par dépôt avec fil
DE102019115026A1 (de) Verfahren und vorrichtung zum laserschweissen
EP3142823B1 (fr) Système de contrôle de l'orientation d'un faisceau laser et dispositif de génération d'un rayonnement euv équipé dudit dispositif
DE3933057C2 (fr)
DE112006000949T5 (de) Laserschweisssystem
WO1991012923A1 (fr) Dispositif de surveillance de pieces usinees par faisceau laser
DE102018100549B3 (de) Verfahren und Vorrichtung zum Laserhärten von Werkstücken
WO2001083156A1 (fr) Dispositif et procede de soudage au laser
DE102021102373A1 (de) Verfahren zum Laserhärten eines Garniturdrahtes
EP3181331A1 (fr) Procédé et dispositif de soudage laser de parties synthétiques tridimensionnelles
DE102009061282B3 (de) Laserschweißsystem
EP4096859B1 (fr) Procédé pour usiner une pièce métallique

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: 20120130

AK Designated contracting states

Kind code of ref document: A1

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

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

INTG Intention to grant announced

Effective date: 20140709

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RAU, ARMIN

Inventor name: AICHINGER, JOACHIM

Inventor name: SCHUOECKER, DIETER

Inventor name: SPERRER, GERHARD

Inventor name: BAMMER, FERDINAND

Inventor name: SCHUMI, THOMAS

INTG Intention to grant announced

Effective date: 20141117

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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: CH

Ref legal event code: NV

Representative=s name: ABP PATENT NETWORK AG, CH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010008974

Country of ref document: DE

Effective date: 20150409

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 711478

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150415

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

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: 20150225

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: 20150225

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: 20150525

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: 20150225

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: 20150225

Ref country code: ES

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: 20150225

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: 20150625

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: 20150225

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: 20150526

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 18741

Country of ref document: SK

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

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: 20150225

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: 20150225

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: 20150225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010008974

Country of ref document: DE

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: 20150225

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: 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: 20150225

26N No opposition filed

Effective date: 20151126

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150629

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: 20150225

Ref country code: LU

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: 20150629

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: GB

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

Effective date: 20150629

Ref country code: IE

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

Effective date: 20150629

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: OTHMARSTRASSE 8, 8008 ZUERICH (CH)

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 711478

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150629

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: 20150629

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: 20150225

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

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: 20150225

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: 20100629

Ref country code: SM

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: 20150225

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

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: 20150225

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

Ref country code: CH

Payment date: 20170612

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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: 20150225

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

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

Ref country code: MK

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: 20150225

Ref country code: PT

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: 20150225

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

Ref country code: AL

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: 20150225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502010008974

Country of ref document: DE

Representative=s name: ABP BURGER RECHTSANWALTSGESELLSCHAFT MBH, DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: CH

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

Effective date: 20180630

Ref country code: LI

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

Effective date: 20180630

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

Ref country code: ES

Payment date: 20190719

Year of fee payment: 15

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

Ref country code: NL

Payment date: 20190411

Year of fee payment: 10

Ref country code: SK

Payment date: 20190312

Year of fee payment: 10

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

Ref country code: BE

Payment date: 20190411

Year of fee payment: 10

Ref country code: FR

Payment date: 20190510

Year of fee payment: 10

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

Ref country code: CZ

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

Effective date: 20200629

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20200701

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 18741

Country of ref document: SK

Effective date: 20200629

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200630

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

Ref country code: FR

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

Effective date: 20200630

Ref country code: NL

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

Effective date: 20200701

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: 20200630

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

Ref country code: SK

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

Effective date: 20200629

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

Ref country code: IT

Payment date: 20220520

Year of fee payment: 13

Ref country code: DE

Payment date: 20220405

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502010008974

Country of ref document: DE

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

Ref country code: DE

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

Effective date: 20240103

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

Ref country code: IT

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

Effective date: 20230629