EP3566788B1 - Installation and method for separating flexible rolled strip material - Google Patents

Installation and method for separating flexible rolled strip material Download PDF

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Publication number
EP3566788B1
EP3566788B1 EP18171364.5A EP18171364A EP3566788B1 EP 3566788 B1 EP3566788 B1 EP 3566788B1 EP 18171364 A EP18171364 A EP 18171364A EP 3566788 B1 EP3566788 B1 EP 3566788B1
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EP
European Patent Office
Prior art keywords
length
strip material
feed
thickness
measuring
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.)
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Application number
EP18171364.5A
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German (de)
French (fr)
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EP3566788A1 (en
Inventor
Joachim Ivo
Thomas Dahl
Andreas BARCHET
Christian BRÜSER
Alexander EICK
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.)
Muhr und Bender KG
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Muhr und Bender 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.)
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Publication date
Application filed by Muhr und Bender KG filed Critical Muhr und Bender KG
Priority to PL18171364T priority Critical patent/PL3566788T3/en
Priority to EP18171364.5A priority patent/EP3566788B1/en
Priority to PCT/EP2019/061408 priority patent/WO2019215044A1/en
Priority to US17/053,433 priority patent/US20210245216A1/en
Priority to CN201980031002.8A priority patent/CN112088052B/en
Publication of EP3566788A1 publication Critical patent/EP3566788A1/en
Application granted granted Critical
Publication of EP3566788B1 publication Critical patent/EP3566788B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2205/00—Particular shaped rolled products
    • B21B2205/02—Tailored blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B21B2261/043—Blanks with variable thickness in the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/12—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters

Definitions

  • the invention relates to a system and a method for separating flexibly rolled strip material.
  • Flexibly rolled strip material has a variable thickness profile in the longitudinal direction of the strip. The separation of flexibly rolled strip material therefore requires an exact positioning of the separation area in order to obtain blanks with a defined target thickness profile.
  • a generic device and a generic method for separating flexibly rolled strip material are known.
  • the strip material is fed from a reel over a first pinch roller and a strip straightening arrangement into a strip store. Behind the strip storage system, there are two more pinch rollers with integrated length measurement, with a strip thickness measurement in between, and behind them hydraulic shears for separating the strip material.
  • the tape length fed to the tape store is determined via the first pinch roller, and the tape length fed out of the tape store is determined via the pinch roller arranged behind the tape store.
  • the tape material is tracked via the pinch roller arranged behind the tape storage device and the subsequent thickness measuring unit and an actual thickness profile of the tape material is determined.
  • a cutting plan is created based on the actual thickness profile, according to which the tracked length of the strip material is regulated and the cutting process is carried out.
  • the length of the strip fed to the hydraulic shears is determined by averaging the values determined by the pinch rollers arranged immediately in front of and behind the thickness measurement.
  • the method comprises the steps of: flexible rolling of a strip material, a thickness profile with different sheet thicknesses being produced over the length of the strip material; Determination of a measurement thickness profile of several areas of the strip material lying one behind the other; Calculating a target position in the strip material for a sheet metal blank to be cut out of the strip material as a function of the generated measurement thickness profile of at least two areas of the strip material lying one behind the other; Cutting the flexibly rolled strip material by means of at least one cutting device along the target position for producing the sheet metal blank.
  • the production of shaped cuts and rectangular blanks can take place by means of a suitable separating device.
  • the strip feed system arranged in front of the cutting device, which is usually equipped with a decoiler, a straightening machine, a strip storage unit and a feed device.
  • a metal strip is threaded into such a system manually by the operator.
  • the operator threads the beginning of the tape up to a marked point in the cutting tool or on the cut-to-length shear.
  • the automatic mode is then started and the feed system advances the strip by a certain length that is always the same for each working stroke.
  • the cyclic thickness profile of the flexibly rolled strips can only be positioned imprecisely or not at all relative to the separating edge of the separating device. This means that position tolerances for the thickness profile in relation to the position within the shaped section or the rectangular plate cannot be met. In addition, areas of the metal strip that do not adhere to the thickness tolerances cannot be recognized and sorted out. Furthermore, it is not possible for the thickness profile recurring cyclically in the flexibly rolled strips to be automatically and precisely positioned on the separating edges of the separating devices.
  • the invention is based on the object of proposing a system for separating flexibly rolled strip material that enables precise measurement and evaluation which enables sheet thickness profiles and ensures accurate positioning of the strip material for separation.
  • the task is also to propose a corresponding method for separating flexibly rolled strip material that enables precise measurement, evaluation and positioning.
  • a system for separating flexibly rolled strip material comprising: a storage device for temporarily storing the flexibly rolled strip material; a first feed device which is arranged behind the storage device in the feed direction of the strip material; at least one length measuring device for continuously measuring a length of the strip material; a thickness measuring device for continuously measuring a thickness of the strip material along the length; a second feed device disposed behind the first feed device; a separating device which is arranged in the feed direction of the strip material behind the second feed device; wherein the first feed device and the second feed device are configured to move the strip material from the storage device to the separating device as a function of the thickness measurement and the length measurement; wherein the thickness measuring device is arranged in the feed direction of the strip material behind the storage device and in front of the first strip feed device; and the at least one length measuring device is arranged behind the first tape feed device in the feed direction of the strip material.
  • the system has the advantage that the feed applied by the first feed device can be regulated on the basis of the values previously determined by the thickness measuring unit.
  • a recurring thickness profile of the flexibly rolled strip can be precisely recognized, compared with the desired target profile and positioned exactly at the separating point of the separating device.
  • areas of the metal strip that do not comply with the thickness tolerances can be identified and sorted out.
  • the system can furthermore have a reel for unwinding the flexibly rolled strip material and at least one straightening unit for straightening the flexibly rolled strip material.
  • Several straightening units can in particular when processing particularly thick strips and / or for strips with large absolute thickness jumps of, for example, more than 1 mm.
  • the reel and the at least one straightening unit which can also be referred to collectively as the unwinding and straightening group, are connected upstream of the strip storage device.
  • the first and second feed devices for the separating device are preferably independent of the feed of the unwinding and straightening group in terms of control technology.
  • the unwinding and straightening group conveys the strip into the strip store and makes the flexibly rolled strips available for processing by the other system.
  • the conveying or unwinding speed of the unwinding and straightening group can be regulated by means of a level sensor of the belt storage unit.
  • the level sensor can, for example, be an ultrasonic unit, which senses the depth of the tape loop hanging in the tape store and forwards a corresponding signal to the controller for the unwinding and straightening group. It goes without saying that other sensors can also be used, such as an optical sensor, a capacitive and / or an inductive sensor.
  • the straightening unit can be supported by an infeed driver and a take-off roller.
  • the operation or the running of the system components reel, infeed driver, straightening unit and take-off roller can be synchronized with each other via controllers and operated in speed control or torque control.
  • Each of the units can be operated individually, i.e. independently of the others, as a generator or as a motor.
  • the version with a decoiler and straightening group is ideal if the strip material is rewound into a coil after flexible rolling and is further processed elsewhere. In principle, however, it is also possible for the system parts, strip storage, feed and separation unit to be connected directly to flexible rolling in the continuous process.
  • the strip storage unit is used to decouple the unwinding and straightening group of the system from the position-controlled part of the system that works on the basis of feed lengths and has the components of thickness measurement, feeds, length measurements and the separation device.
  • the thickness measuring unit is arranged behind the strip storage unit and in front of the first feed device in the direction of passage.
  • the associated first length measuring unit is located directly behind the first feed device.
  • the first length measuring unit is designed to continuously record the length of the strip material.
  • the thickness measurement is also carried out continuously while the strip is being fed.
  • the length measuring device and the thickness measuring device are metrologically coupled to one another. It is provided in particular that the length measuring unit generates trigger signals and forwards them to the thickness measuring unit in order to trigger thickness measurements, which are then recorded in turn.
  • the length measuring unit can comprise a measuring wheel, which is in contact on a first side of the strip material, and a support wheel, which is in contact with an opposite side of the strip material as a counter bearing for the measuring wheel.
  • the running surface of the measuring wheel can be made from a steel material, for example.
  • the running surface of the support wheel can be made of an elastic material, for example. It goes without saying that the configuration of the length measuring unit described above can also be used for any other length measuring unit in the system.
  • two length measuring devices are provided, a first length measuring device which is assigned to the first feed device, and a second length measuring device which is assigned to the second feed device.
  • the second length measuring device is arranged in the feed direction of the strip material behind the second feed device and in front of the separating device.
  • the first length measuring device preferably has a first distance from the first feed device which is less than 0.5 times, in particular less than 0.25 times the distance between the first feed device and the second feed device.
  • the second length measuring device can have a second distance from the second feed device which is smaller than 0.5 times, in particular less than 0.25 times the distance between the second feed device and the separating device.
  • the two feed devices work synchronously in order to feed the strip material from the strip store to the separating unit. Both feeders each exert a tensile force on the strip material in order to move it. So that the strip material is kept flat between the two feed devices, it is provided in particular that the second feed device located downstream in the direction of passage can be driven faster than the upstream first feed device. In this way, the strip material is kept under tension between the two feed devices and is therefore flat, which has a positive effect on the measurement accuracy.
  • the distance between the thickness measuring device and the separating device is at least twice the blank length of a blank to be cut out of the strip material.
  • the distance is at least twice the length of a blank plus the feed path which the strip material covers during the computing time for a blank to be cut out.
  • the separating device can be selected according to the requirements of the flat product to be separated and can comprise, for example, a cross-cutting shears or a beam cutting unit, in particular a laser cutting unit.
  • a cut-to-length shear, a cut-to-length laser or a comparable beam system can be used to cut blanks to length, combined with the strip feed system.
  • a press line with suitable cutting tools or a beam cutting unit, in particular a laser beam unit, each connected to the strip feed system, can be used to produce shaped cuts.
  • a solution to the above-mentioned object is also a method for separating flexibly rolled strip material, in particular by means of a system according to one of the above-mentioned embodiments, comprising the steps: intermediate storage of the flexibly rolled strip material by means of a storage device; Advancing the strip material from the intermediate store by means of a first advancing device and a second advancing device; continuous measurement of a Thickness of the strip material by means of a thickness measuring device while the strip material is being advanced, the thickness being measured in the direction of advance of the strip material in front of the first advance device; continuous measurement of a length of the strip material by means of a length measuring device while the strip material is being advanced, the length being measured in the advance direction of the strip material behind the first advance device; Calculating an actual thickness profile for a blank to be separated from the strip material from measured thickness values and associated measured length values; Comparing the calculated actual thickness profile with a predetermined nominal thickness profile and calculating a feed length for the blank to be separated from the strip material;
  • the length measurement behind the respective feed unit decouples the feed movement from the length measurement, which leads to particularly precise measurement results.
  • the thickness measurement in front of the first feed unit also has a favorable effect on the measuring accuracy, since the feed applied by the first feed device can be controlled on the basis of the values previously determined by the thickness measuring unit.
  • the use of the second position-controlled feed device with the associated length measuring unit contributes to a flat, distortion-free and tape loop-free tape run between the thickness measuring unit and the cutting point, which in turn ensures precise positioning of the reference edges of the feed lengths in relation to the cutting point.
  • the overall advantages for the process are the same as for the system.
  • a recurring thickness profile of the flexibly rolled strip can be precisely recognized, compared with the desired target profile and precisely positioned relative to the separating point of the separating device.
  • areas of the metal strip that do not comply with the thickness tolerances can be identified and sorted out.
  • the strip material is pulled out of the strip store by the position-controlled first or second strip feed.
  • the flexible rolled strip is continuously measured in terms of thickness by the thickness measuring unit.
  • the thickness measuring unit makes an assessment based on the measured thickness, taking into account the associated length measurement values, as to whether or not the flexible rolled strip corresponds to the required thickness tolerances.
  • the comparison of the determined actual thickness profile with the specified target thickness profile also takes place, in particular, taking into account the associated tolerances of the target thickness profile, which can be represented by an envelope curve. In doing so, a computational check is carried out to determine whether the determined actual profile lies within the envelope curve of the target profile.
  • the feed length for the strip or the blank to be cut from it and the cutting position of the blank in the strip can be calculated.
  • the tape is divided into areas that are OK (so-called OK parts) and those that are not OK (so-called NOK parts).
  • the position and length of these individual areas in the strip are passed on from the thickness measuring device to the first feed device.
  • the first feed device, and also the second feed device coupled to it, can then carry out the feeds instructed by the thickness measuring unit and position the reference edges of the individual feed lengths precisely at the cutting point of the cutting device.
  • the feed unit can forward the information to the other parts of the system as to whether it is a feed length with an OK thickness profile or an incorrect thickness profile.
  • the length measuring device is designed to continuously record a length value representing the feed path of the strip.
  • high-precision length measuring devices are preferably used which have a measuring tolerance of up to 0.5 mm per meter of strip length, in particular of up to 0.1 mm per meter of strip length.
  • the length measurement can be carried out, for example, by means of a measuring wheel that is in contact with the strip material that has passed by.
  • the length measuring device can measure the strip material from start to finish without interruption. The beginning of the tape can be used as the starting point of the measurement and defines the length zero position accordingly. The length is recorded continuously from the start of the length measurement.
  • the first length measuring device is the first feed at the starting point with the thickness measurement referenced in terms of length. This can be done by continuously reporting the length measurement value from the first length measuring device to the thickness measuring device. The length measurement values can be reported absolutely or incrementally. The thickness measurement scales the thickness measurement values based on the reported length measurement values over the strip length. In this way, both measuring devices can work from exactly the same strip length zero point. The measured actual thickness profile can be compared reliably with the specified nominal thickness profile and a corresponding assessment can be made with regard to the parts that are in order and those that are not in order. Referencing the length measuring device with the thickness measuring device is also important for the precise positioning of the feed lengths by the feed in relation to a reference interface for the separation. Alternatively or in addition, the second length measuring device of the second feed can also be referenced with regard to the length at the starting point with the thickness measurement.
  • a further length measurement of the strip material can be carried out by means of a second length measuring device while the strip material is being fed to the separating device, the length being measured with the second measuring device in the feed direction of the strip material behind the second feed device.
  • the following can also be provided: comparing the first length measurement values determined by the first length measurement device with the associated second length measurement values determined by the second length measurement device; and switching off the system if a difference between the first length measurement values and the second length measurement values exceeds a predetermined difference value.
  • a fixed distance can be set between the thickness measuring device and the first feed device. This distance is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system. In this way, the length reference between the thickness measurement on the one hand and the feed or the length measurement on the other hand, reliably guaranteed over the entire length of the strip material.
  • a fixed distance can be set between the thickness measuring device and the separating device according to a possible procedure. This distance is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system.
  • the measuring section between the thickness measurement and the separating device can be set to at least twice the blank length of a blank to be cut out of the strip material.
  • the distance between the thickness measurement and the separating device can be set to at least twice the length of a blank plus the feed path that the strip covers during the computing time for a blank to be cut out.
  • a distance between two devices this can refer to a predefined reference point of the respective device, for example a measuring plane in the measuring devices or a separation point in the separating device.
  • the second feed device is operated synchronously with the first feed device, in particular with the same length scale as the first feed device and the thickness measuring unit.
  • the second feed unit By regulating in such a way that the second feed unit advances slightly with respect to the first feed unit, the second feed unit generates a slight tension on the tape in the tape section that is located within the measuring section, which ensures a flat tape run.
  • FIG. 1 a system 2 according to the invention for separating flexibly rolled strip material 3 is shown.
  • Flexibly rolled strip material means that a strip material with an essentially constant sheet thickness is rolled in this way over its length by means of rollers that it receives a variable sheet thickness along the rolling direction. After the flexible rolling, the strip material 3 has different thicknesses over the length in the rolling direction. After flexible rolling, the strip material 3 is wound up again to form the coil 4, so that it can be fed to the next process step, or it can, if necessary, be further processed directly.
  • a coil 4 made of flexibly rolled strip material is shown as the starting material.
  • the system 2 comprises a reel 5 for unwinding the flexibly rolled strip material 3 and a straightening unit 6 for straightening the flexibly rolled strip material.
  • the straightening unit 6 comprises a plurality of rollers, in particular between 7 to 23 rollers, through which the strip material passes.
  • An infeed driver 7 can be provided between the reel 5 and the straightening unit 6, which pulls the strip material 3 from the reel and feeds it to the straightening unit.
  • a take-off roller 8, which transmits a feed force to the strip material 3, can be arranged behind the straightening unit 6 in the direction of passage of the strip.
  • reel, infeed driver, straightening unit and take-off roller can be synchronized with one another via controllers and operated with one another in speed control or torque control.
  • Each of the units can be operated individually, i.e. independently of the others, as a generator or as a motor.
  • the torques M5, M6, M7, M8 that can be transferred to the strip material by the respective components 5, 6, 7, 8 are shown.
  • a storage device 9 is provided which is designed to temporarily store a respective section of the tape 3.
  • a feed movement of the unwinding and straightening group 10 is decoupled from a feed movement of the separating group 12.
  • the unwinding and straightening group 10 conveys the strip 3 into the strip store 9, which makes the flexibly rolled strip 3 available for further processing in the separating group 12.
  • the conveying or unwinding speed of the unwinding and straightening group 10 can be regulated by means of a level sensor 13 of the belt storage unit 9.
  • the fill level sensor 13 can comprise, for example, an ultrasonic sensor or an optical sensor which senses the depth of the tape loop hanging in the tape storage device and forwards a corresponding signal to the controller for the unwinding and straightening group 10.
  • the system 2 comprises, as further components behind the storage device 9, a thickness measuring device 14 for continuously measuring the thickness of the strip material, a first feed device 15, a first length measuring device 16 assigned to the first feed device for continuous measurement of the length of the strip material 3, a second feed device 17, which is arranged at a distance behind the first feed device 15, a second length measuring device 18 assigned to the second feed device 17 and a separating unit 19 for separating the strip material 3.
  • the two feed devices 15, 17 are operated synchronously and are designed to move the strip material 3 from the storage device 9 to the separating device 19 as a function of the thickness measurement and the length measurement.
  • the two feeders 15, 17 each exert a feed force on the strip material in order to move it. So that the strip material is kept flat between the two feed devices 15, 17, the second feed device 17 can be driven with a slight advance relative to the first feed device 15.
  • a special feature of the present arrangement is that the thickness measuring device 14 is arranged in the direction R of the strip material 3 behind the storage device 9 and in front of the first feed device 15, and that the first length measuring device 16 is designed separately from the first feed device 15 and is located downstream of it.
  • the length-based feed control of the separating group 12 only the length measurement values of the length measuring devices 16, 18 located behind the strip store 9 are used as a basis.
  • the first length measuring device 16 and the thickness measuring device 14 are metrologically coupled to one another.
  • a fixed distance A1 is set between the thickness measuring device 14 and the first feeding device 15 to reliably maintain the length reference over the strip length between the thickness measurement 14 on the one hand and the first feed 15 or the first length measurement 16 on the other.
  • This distance A1 is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system. In this way, the length reference between the thickness measurement on the one hand and the feed or the length measurement on the other hand can be over the entire Length of the tape material can be reliably guaranteed.
  • the length measuring unit 16 can generate trigger signals B1 and forward them to the thickness measuring unit 14.
  • Each trigger signal B1 serves as a trigger for a thickness measurement, so that with each trigger signal of the length measuring unit 16 a thickness measurement value is generated and assigned to a corresponding length measurement value. In this way, data sets are generated from pairs of length and thickness values, from which the actual thickness profile of the blank to be cut from the strip material 3 can be determined.
  • the first and second length measuring units 16, 18 each include a measuring wheel 20, 20 'that is in abutment contact with a first side of the strip material 3, and a support wheel 21, 21' that serves as a counter bearing for the measuring wheel 20, 20 '.
  • the running surface of the measuring wheels can be made from a steel material, for example.
  • the running surface of the support wheels can be made of an elastic material, for example. It goes without saying, however, that other forms of length measurements, such as, for example, contactless sensors, can also be used. For a high measurement accuracy of the length measurement values, it is advantageous if the measuring devices 16, 18 are each arranged as close as possible to the respective feeds 15, 17.
  • the distance between the first length measuring device 16 and the first feed device 15 can in particular be smaller than 0.1 times the distance between the two feed devices 15, 17.
  • the second length measuring device 18 can have a distance from the second feed device 17 which is smaller than 0.1 times the distance between the second feed device 17 and the separating device 19.
  • the distance A2 between the thickness measuring device 14 and the separating device 19 is also shown. This is preferably at least twice the blank length L22 of a blank 22 to be cut out of the strip material 3 plus the feed path which the strip material covers during the computing time for a blank to be cut out.
  • the separating device 19 can be selected according to the requirements of the flat product 22 to be separated and, for example, a mechanical separating device, such as a cross-cutting shears (as shown here) or a beam cutting unit, in particular a laser cutting unit.
  • the separating device can also be referred to as a cutting or separating device.
  • the present cutting device 19 is designed to produce cuts running perpendicular to the edge of the strip. It goes without saying, however, that the separating device can in principle be adapted to the final contour of the blank to be produced with regard to the separating cut to be produced.
  • the separating device can also be designed to produce cuts running obliquely to the strip edge, or also curved cuts. This can, if necessary, reduce the amount of scrap.
  • a method for separating flexibly rolled strip material 3 into blanks 22 is described below with reference to FIG Figure 2 described.
  • the process can be viewed in two parts with regard to the regulation of the components. This is because the process steps S10 unwinding and S20 straightening carried out by the unwinding and straightening group 10 can be decoupled from the process steps (S40-S130) carried out behind the belt store S30 by the advancing and separating group 12 in terms of control technology, at least with regard to the feed of the strip material be.
  • step S30 intermediate storage of the flexibly rolled strip material 3 by means of the storage device 9.
  • the strip material 3 is continuously fed from the unwinding and straightening group 10 into the strip store 9.
  • step S40 the strip material 3 is advanced out of the intermediate store 3 by means of the first and second advance devices 16, 17. This takes place in particular at intervals according to a calculated advance length for the respective blank 22 to be cut out of the strip material 3.
  • the advance length is determined in the Steps S50, S60 a continuous measurement of a thickness signal and a length signal of the strip material 3. This is carried out continuously by means of the thickness measuring device 14 and the first length measuring device 16, i.e.
  • the thickness measurement (S50) takes place in the direction of passage R of the strip material 3 in front of the first feed device 15 or in front of the first length measuring device 16.
  • the thickness and length values recorded by the measuring devices 14, 16 are forwarded to a computing or control unit, where they are processed further to calculate the actual thickness profile of a blank 22 to be cut out and to calculate the feed length for this blank.
  • a thickness value D is assigned to each length position L of the strip material 3.
  • the thickness measuring device 14 Since the thickness measuring device 14 is arranged in front of the first feed device 15, the thickness values recorded thereby and the actual thickness profiles determined from them together with the associated length values can be taken into account directly in the current feed movement.
  • the length measurement can take place in the direction R of the belt, immediately behind the first feed device 15.
  • the continuous measurement of the length or path signal of the strip material 3 by means of the first length measuring device 16 takes place simultaneously with the thickness measurement while the strip material is being advanced.
  • the first length measuring device 16 is referenced at the starting point with the thickness measuring device 14 in terms of length. This is done for the first time, as described above, by setting the defined distance A1, as well as during the process by continuously reporting the length measurement value from the first length measurement device 16 to the thickness measurement device 14.
  • the length measurement values can be reported absolutely or incrementally, for example by means of trigger signals B1, B2 .
  • the thickness measurement scales the thickness measurement values based on the reported length measurement values over the strip length. In this way, both measuring devices 14, 16 work from exactly the same strip length zero point.
  • step S70 the actual thickness profile for the blank 22 to be separated from the strip material 3 is calculated from the measured thickness and length measured values of the measuring devices 14, 16.
  • the measured actual thickness profile can be reliably compared with the specified nominal thickness profile and the associated tolerances, in particular represented by an envelope curve, in step S80 and a corresponding assessment can be made with regard to the parts that are OK and those that are not.
  • the feed length for the blank 22 to be separated from the strip material 3 can be calculated in step S90.
  • the strip material 3 is fed to the separating device 19 by means of the two feed devices 15, 17 on the basis of the calculated feed length VL. While the strip material is advanced by the calculated feed length VL for a first blank, the thickness and length measurement for the next blank 22 'to be subsequently cut out is carried out simultaneously by means of the thickness and length measuring devices 14, 16 in the area of the first feed unit 15. This is done the dashed line in Figure 2 shown. It is provided that the measuring distance between the thickness measurement 14 and the separating device 19 is set to at least twice the blank length L22 of a blank 22 to be cut from the strip material 3 plus the feed path that the strip covers during the computing time for the blank to be cut. The circuit board 22 is cut out in method step S110.
  • a further length measurement by means of a second length measuring device 18 can take place while the strip material 3 is being fed from the second feeding device 17 to the cutting unit 19.
  • the second length measuring unit is preferably arranged directly behind the second feed device 17 in the feed direction of the strip material 3.
  • the following method step S130 can also be provided: comparing the first length measurement values determined by the first length measurement device 16 with the associated second length measurement values determined by the second length measurement device 18 and switching off the system if a difference between the first and second length measurement values exceeds a predetermined difference value. This measurement redundancy minimizes the risk of rejects being produced.
  • FIG Figures 3 and 5 various shapes of blanks to be produced from the strip material 3 are shown, as well as in FIG Figure 6 an example of a separation sequence for a board according to Figure 3 or one according to Figure 4 .
  • FIG 3 shows an embodiment of a rectangular plate 22 with an asymmetrical thickness profile D22 over the length L22 of the plate.
  • a transition section 26a, 26b, 26c with variable thickness is formed, which can also be referred to as ramps.
  • the rectangular blank 22 shown is produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by a simple cut, for example by means of a cross-cutting shears.
  • An exemplary separation sequence for the rectangular plate 22 from Figure 3 is in the upper path of the Figure 6 shown.
  • Successive boards have the same reference numerals with prime indices.
  • The” OK "boards 22, 22 ', 22" are stacked by means of a stacking system (not shown).
  • the "not ok" sections 28, 28 ' are automatically scrapped.
  • a further exemplary separation sequence for a further exemplary rectangular plate is shown.
  • the thicknesses of the respective first section 24a and the last section 24a are also the same.
  • the last section 24a of the plate 22 accordingly has the same thickness as the first section 24a' of the subsequent plate 22
  • an "NOK” board 28 is followed by an "OK” board 22, a short "NOK” intermediate piece 28 'to be removed, followed by a further "OK” board 22', a "NOK” “Board 28” and an “OK” board 22 ".
  • The” OK "boards 22, 22 ', 22" are stacked by means of a stacking system (not shown).
  • FIG 4 a further embodiment of a rectangular plate 22 is shown, which in contrast to Figure 3 has a symmetrical thickness profile D22 over the length L22. It can be seen that the thickness profile D22 of the blank 22 is designed mirror-symmetrically with respect to a center plane E.
  • the rectangular blank 22 shown in the present case is also produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by a simple cut, for example by means of cross-cutting shears.
  • FIG. 5 an embodiment of circuit boards is shown, the end portions of which respectively have a different thickness.
  • two successive circuit boards 22A, 22B are each arranged in a mirrored manner.
  • a first plate 22A and a second plate 22B alternate over the length of the strip.
  • the profile of the first plates 22A corresponds to the profile of the second plates 22B.
  • the blanks 22A, 22B shown here also each have an asymmetrical thickness profile D22A, D22B over the respective length L22A, L22B. It can be seen that the thickness profile D22A of the board 22A is mirror-symmetrical with respect to a center plane EAB to the thickness profile D22B of the board 22B following it.
  • the board 22A has, starting from the first end 23A, a first section 24Aa with a first thickness, a second section 24Ab with a second thickness, a third section 24Ac with a third thickness, a fourth section 24Ad with a fourth thickness and a last section 24Ae with a thickness which is not equal to the first thickness of the first section 24Aa. Between the sections 24Aa, 24Ab, 24Ac, 24Ad and 24Ae, each of which has a constant thickness over the length, transition sections 26Aa, 26Ab, 26Ac, 26Ad and 26Ae are provided with variable thickness over the length.
  • the second circuit board 22B is constructed symmetrically to the first circuit board.
  • the second circuit board 22B is in turn followed by a first circuit board 22A, and so on.
  • the rectangular plates 22A, 22B shown here are also produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by means of a simple cut, for example by means of cross-cutting shears.
  • Figure 7 shows a system 2 according to the invention for separating flexibly rolled strip material in a modified embodiment. This largely corresponds to the embodiment according to Figure 1 , so that reference is made to the above description with regard to the similarities. The same or modified components are provided with the same reference symbols as in FIG Figure 1 .
  • This Annex 2 in accordance with Figure 7 can be related to the same above Figure 2 are operated.
  • the only difference of the present embodiment consists in the design of the separating device 19, which in the present case comprises a shaped cutting tool, in particular with a band cutting tool.
  • the shape cutting tool is designed so that it cuts a shaped blanking plate 22 corresponding to the target contour from the strip material 3.
  • one or more shaped cutting blanks 22 can be cut out of the strip material 3 in one operation of the shaped cutting tool.
  • the separating device 19 can be designed as a punching tool, as shown in more detail in FIG Figure 9 shown, with a lower tool part 29 and an upper tool part 30 which is movable relative thereto in order to carry out a contoured cut.
  • the separating device can have an integrated strip cutting tool which separates a plate from the strip.
  • the sequence of cuts can be chosen as required, i.e. first a separating cut of a blank from the strip, then a shaped cut from the blank, or a separating cut and shaped cut at the same time, or first a shaped cut from the strip and then a separating cut from the strip.
  • precise positioning of the shaped cut 22 to be cut out relative to the tool 19 by means of the feed units 15, 17 is also provided in the present embodiment with a shaped cutting tool.
  • the cutting tool can have a cutting line which deviates from a perpendicular to the strip edge and which can be straight, inclined or also curved. Depending on the shape of the shaped blanks to be cut out, the punching scrap can be reduced with inclined or curved cutting lines.
  • the feed units 15, 17 are connected in terms of control technology to the shape cutting tool 19 in such a way that the strip material is advanced in the desired length to a reference point 32 or a reference plane on the shape cutting tool 19.
  • the shape cutting tool 19 is precisely aligned with respect to the press table 31 and is precisely positioned or fixed by means of positioning means such as fitting bolts or fitting cones.
  • a shaped blanking plate 22 is shown, as it is shown, for example, by means of the punch 19 according to the system Figure 7 can be cut out.
  • the shaped blank 22 is characterized in that it has a defined circumferential contour 27.
  • the contour of the sheet metal blanks 22 to be cut out of the strip material 3 is arbitrary and can be set individually according to the geometric specifications.
  • it is suitable for producing a shaped blank 22 for the punching tool described in particular also a beam cutting device, for example a laser beam cutting device, which can be moved along several axes, namely at least in the feed direction and in the transverse direction and optionally in the vertical direction of the strip material.
  • the die cut blank 22 has sections 24a, 24b, 24c, 24d with different thicknesses (plateaus) and intermediate transition sections 26a, 26b, 26c (ramps).
  • the reference edge 32 is shown on which the strip material 3 is positioned in the separating device 19 in order to produce the shaped cut.
  • FIG. 11 shows an exemplary separation sequence for a die cut blank 22 from FIG Figure 8 by means of the shape cutting tool 19, which is shown in dashed lines here.
  • the die cutting tool 19 the lower tool part 29, which is positioned on the press table 31, and the upper tool part 30 can be seen.
  • the tape 3 is advanced onto a reference separating edge 32 according to the calculation of the advance unit 15, 17. Then the die cut blank 22 is cut out by moving the upper part 30 towards the lower part 29.
  • the specifically shown exemplary sequence comprises an “OK” die-cut board 22, followed by an “OK” board area 22 'to be cut out, followed by two "OK” board areas 28, 28', and a further “OK” board area 22 " further "NOK” board area 28 "and a further” OK "board area 22 '".
  • the "OK” boards 22, 22', 22 ", 22 '” are stacked by means of a stacking system (not shown) "-Sections 28, 28 'are automatically scrapped.
  • the tape 3 is divided into feed lengths, which are precisely positioned below the separating edge of the separating device 19.
  • the separating device 19 then separates the feed lengths from the tape. In the event that the feed length is "OK" (OK), the rectangular or shaped blank is sent for further processing. In the event that the feed length is "not OK” (not ok), it is sorted out and scrapped.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Description

Die Erfindung betrifft eine Anlage und ein Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial. Flexibel gewalztes Bandmaterial weist ein variables Dickenprofil in Bandlängsrichtung auf. Die Vereinzelung von flexibel gewalztem Bandmaterial erfordert daher eine exakte Positionierung des Trennbereiches, um Platinen mit definiertem Soll-Dickenprofil zu erhalten.The invention relates to a system and a method for separating flexibly rolled strip material. Flexibly rolled strip material has a variable thickness profile in the longitudinal direction of the strip. The separation of flexibly rolled strip material therefore requires an exact positioning of the separation area in order to obtain blanks with a defined target thickness profile.

Aus der CN 104551538 B sind eine gattungsgemässe Vorrichtung und ein gattungsgemässes Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial bekannt. Das Bandmaterial wird von einer Haspel über eine erste Klemmrolle und eine Bandrichtanordnung in einen Bandspeicher geführt. Hinter dem Bandspeicher sind zwei weitere Klemmrollen mit integrierter Längenmessung, dazwischen eine Banddickenmessung, und dahinter eine hydraulische Schere zur Vereinzelung des Bandmaterials angeordnet. Über die erste Klemmrolle wird die dem Bandspeicher zugeführte Bandlänge und über die hinter dem Bandspeicher angeordnete Klemmrolle die aus dem Bandspeicher herausgeführte Bandlänge bestimmt. Durch Integration des Unterschiedes zwischen zugeführter Bandlänge und herausgeführte Bandlänge über die Zeit, kann die gespeicherte Bandlänge im Bandspeicher bestimmt werden. Überschreitet die gespeicherte Bandlänge im Bandspeicher einen Soll-Wert, wird Bandmaterial über die hinter dem Bandspeicher angeordnete Klemmrolle und die nachfolgende Dickenmesseinheit nachgeführt und ein Ist-Dickenprofil des Bandmaterials ermittelt. Anhand des Ist-Dickenprofils wird ein Schneidplan erstellt, entsprechend dem die nachgeführte Länge des Bandmaterials geregelt und der Schneidprozess durchgeführt wird. Dabei wird die der hydraulischen Schere zugeführte Bandlänge durch Mittelwertbildung der von den unmittelbar vor und hinter der Dickenmessung angeordneten Klemmrollen ermittelten Werte bestimmt.From the CN 104551538 B a generic device and a generic method for separating flexibly rolled strip material are known. The strip material is fed from a reel over a first pinch roller and a strip straightening arrangement into a strip store. Behind the strip storage system, there are two more pinch rollers with integrated length measurement, with a strip thickness measurement in between, and behind them hydraulic shears for separating the strip material. The tape length fed to the tape store is determined via the first pinch roller, and the tape length fed out of the tape store is determined via the pinch roller arranged behind the tape store. By integrating the difference between the length of tape fed in and the length of tape removed over time, the length of tape stored in the tape memory can be determined. If the tape length stored in the tape storage device exceeds a target value, the tape material is tracked via the pinch roller arranged behind the tape storage device and the subsequent thickness measuring unit and an actual thickness profile of the tape material is determined. A cutting plan is created based on the actual thickness profile, according to which the tracked length of the strip material is regulated and the cutting process is carried out. The length of the strip fed to the hydraulic shears is determined by averaging the values determined by the pinch rollers arranged immediately in front of and behind the thickness measurement.

Aus der EP 3 181 248 A1 sind ein Verfahren und eine Anlage zur Herstellung einer Blechplatine bekannt. Das Verfahren umfasst die Schritte: Flexibles Walzen eines Bandmaterials, wobei ein Dickenprofil mit unterschiedlichen Blechdicken über der Länge des Bandmaterials erzeugt wird; Ermitteln eines Messdickenprofils von mehreren hintereinander liegenden Bereichen des Bandmaterials; Berechnen einer Sollposition in dem Bandmaterial für eine aus dem Bandmaterial auszuschneidende Blechplatine in Abhängigkeit von dem generierten Messdickenprofil von zumindest zwei hintereinander liegenden Bereichen des Bandmaterials; Schneiden des flexibel gewalzten Bandmaterials mittels zumindest einer Schneidvorrichtung entlang der Sollposition zum Erzeugen der Blechplatine.From the EP 3 181 248 A1 a method and a system for producing a sheet metal blank are known. The method comprises the steps of: flexible rolling of a strip material, a thickness profile with different sheet thicknesses being produced over the length of the strip material; Determination of a measurement thickness profile of several areas of the strip material lying one behind the other; Calculating a target position in the strip material for a sheet metal blank to be cut out of the strip material as a function of the generated measurement thickness profile of at least two areas of the strip material lying one behind the other; Cutting the flexibly rolled strip material by means of at least one cutting device along the target position for producing the sheet metal blank.

Die Herstellung von Formschnitten und Rechteckplatinen, die auch als Tailor Rolled Shapes beziehungsweise Tailor Rolled Blanks bezeichnet werden, kann mittels einer geeigneten Trenneinrichtung erfolgen. Hierzu ist die vor der Trenneinrichtung angeordnete Bandvorschubanlage, welche üblicherweise mit einem Abhaspel, einer Richtmaschine, einer Bandspeichereinheit und einer Vorschubeinrichtung ausgerüstet. Das Einfädeln eines Metallbandes in eine solche Anlage erfolgt manuell durch den Bediener. Der Bediener fädelt den Bandanfang bis zu einer gekennzeichneten Stelle im Trennwerkzeug oder an der Querteilschere ein. Anschließend wird der Automatikbetrieb gestartet und die Vorschubanlage schiebt das Band je Arbeitshub um ein bestimmtes, immer gleiches Längenmaß vor. Bei dieser Vorgehensweise kann das zyklische Dickenprofil der flexibel gewalzten Bänder nur ungenau beziehungsweise gar nicht zur Trennkante der Trenneinrichtung positioniert werden. Hiermit können Lagetoleranzen für das Dickenprofil bezogen auf die Lage innerhalb des Formschnittes oder der Rechteckplatine nicht erfüllt werden. Darüber hinaus können Bereiche des Metallbandes, welche die Dickentoleranzen nicht einhalten, nicht erkannt und aussortiert werden. Ferner ist es nicht möglich, dass zyklisch in den flexibel gewalzten Bändern wiederkehrende Dickenprofil automatisch, lagegenau auf die Trennkannten der Trenneinrichtungen zu positionieren.The production of shaped cuts and rectangular blanks, which are also referred to as Tailor Rolled Shapes or Tailor Rolled Blanks, can take place by means of a suitable separating device. For this purpose, the strip feed system arranged in front of the cutting device, which is usually equipped with a decoiler, a straightening machine, a strip storage unit and a feed device. A metal strip is threaded into such a system manually by the operator. The operator threads the beginning of the tape up to a marked point in the cutting tool or on the cut-to-length shear. The automatic mode is then started and the feed system advances the strip by a certain length that is always the same for each working stroke. With this procedure, the cyclic thickness profile of the flexibly rolled strips can only be positioned imprecisely or not at all relative to the separating edge of the separating device. This means that position tolerances for the thickness profile in relation to the position within the shaped section or the rectangular plate cannot be met. In addition, areas of the metal strip that do not adhere to the thickness tolerances cannot be recognized and sorted out. Furthermore, it is not possible for the thickness profile recurring cyclically in the flexibly rolled strips to be automatically and precisely positioned on the separating edges of the separating devices.

Der Erfindung liegt die Aufgabe zu Grunde eine Anlage zum Vereinzeln von flexibel gewalztem Bandmaterial vorzuschlagen, das eine genaue Messung und Bewertung der Blechdickenprofile ermöglicht sowie eine lagegenaue Positionierung des Bandmaterials zum Vereinzeln sicherstellt. Die Aufgabe ist ferner, ein entsprechendes Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial vorzuschlagen, das eine genaue Messung, Bewertung und Positionierung ermöglicht.The invention is based on the object of proposing a system for separating flexibly rolled strip material that enables precise measurement and evaluation which enables sheet thickness profiles and ensures accurate positioning of the strip material for separation. The task is also to propose a corresponding method for separating flexibly rolled strip material that enables precise measurement, evaluation and positioning.

Zur Lösung wird eine Anlage zum Vereinzeln von flexibel gewalztem Bandmaterial vorgeschlagen, umfassend: eine Speichereinrichtung zum Zwischenspeichern des flexibel gewalzten Bandmaterials; eine erste Vorschubeinrichtung, die in Vorschubrichtung des Bandmaterials hinter der Speichereinrichtung angeordnet ist; zumindest eine Längenmesseinrichtung zur kontinuierlichen Messung einer Länge des Bandmaterials; eine Dickenmesseinrichtung zur kontinuierlichen Messung einer Dicke des Bandmaterials entlang der Länge; eine zweite Vorschubeinrichtung, die hinter der ersten Vorschubeinrichtung angeordnet ist; eine Vereinzelungseinrichtung, die in Vorschubrichtung des Bandmaterials hinter der zweiten Vorschubeinrichtung angeordnet ist; wobei die erste Vorschubeinrichtung und die zweite Vorschubeinrichtung ausgestaltet sind, um das Bandmaterial in Abhängigkeit von der Dickenmessung und der Längenmessung von der Speichereinrichtung zur Vereinzelungseinrichtung zu bewegen; wobei die Dickenmesseinrichtung in Vorschubrichtung des Bandmaterials hinter der Speichereinrichtung und vor der ersten Bandvorschubeinrichtung angeordnet ist; und die zumindest eine Längenmesseinrichtung in Vorschubrichtung des Bandmaterials hinter der ersten Bandvorschubeinrichtung angeordnet ist.To solve this, a system for separating flexibly rolled strip material is proposed, comprising: a storage device for temporarily storing the flexibly rolled strip material; a first feed device which is arranged behind the storage device in the feed direction of the strip material; at least one length measuring device for continuously measuring a length of the strip material; a thickness measuring device for continuously measuring a thickness of the strip material along the length; a second feed device disposed behind the first feed device; a separating device which is arranged in the feed direction of the strip material behind the second feed device; wherein the first feed device and the second feed device are configured to move the strip material from the storage device to the separating device as a function of the thickness measurement and the length measurement; wherein the thickness measuring device is arranged in the feed direction of the strip material behind the storage device and in front of the first strip feed device; and the at least one length measuring device is arranged behind the first tape feed device in the feed direction of the strip material.

Die Anlage weist den Vorteil auf, dass der durch die erste Vorschubeinrichtung aufgebrachte Vorschub an Hand der zuvor durch die Dickenmesseinheit ermittelten Werte geregelt werden kann. Ein wiederkehrendes Dickenprofil des flexibel gewalzten Bandes kann genau erkannt, mit dem gewünschten Sollprofil verglichen und exakt zur Trennstelle der Vereinzelungseinrichtung positioniert werden. Darüber hinaus können Bereiche des Metallbandes, welche die Dickentoleranzen nicht einhalten, erkannt und aussortiert werden.The system has the advantage that the feed applied by the first feed device can be regulated on the basis of the values previously determined by the thickness measuring unit. A recurring thickness profile of the flexibly rolled strip can be precisely recognized, compared with the desired target profile and positioned exactly at the separating point of the separating device. In addition, areas of the metal strip that do not comply with the thickness tolerances can be identified and sorted out.

Nach einer Ausführungsform kann die Anlage ferner eine Haspel zum Abwickeln des flexibel gewalzten Bandmaterials und mindestens eine Richteinheit zum Richten des flexibel gewalzten Bandmaterials aufweisen. Mehrere Richteinheiten können insbesondere bei der Verarbeitung besonders dicker Bänder und/oder bei Bändern mit großen absoluten Dickensprüngen von beispielsweise mehr als 1 mm verwendet werden. Die Haspel und die mindestens eine Richteinheit, die gemeinsam auch als Abwickel- und Richtgruppe bezeichnet werden können, sind der Bandspeichereinrichtung vorgeschaltet. Vorzugsweise sind die erste und zweite Vorschubeinrichtung für die Vereinzelungseinrichtung steuerungstechnisch unabhängig von dem Vorschub der Abwickel- und Richtgruppe. Die Abwickel- und Richtgruppe fördert das Band in den Bandspeicher und stellt die flexibel gewalzten Bänder für die Verarbeitung durch die weitere Anlage zur Verfügung. Hierbei kann die Förder- beziehungsweise Abwickelgeschwindigkeit der Abwickel- und Richtgruppe mittels eines Füllstandsgebers des Bandspeichers geregelt werden. Der Füllstandsgeber kann beispielsweise eine Ultraschalleinheit sein, welcher die Tiefe der in den Bandspeicher hängenden Bandschlaufe sensiert und ein entsprechendes Signal an den Regler für die Abwickel- und Richtgruppe weitergibt. Es versteht sich, dass auch andere Sensoren verwendbar sind, wie ein optischer Sensor, ein kapazitiver und/oder ein induktiver Sensor. Die Richteinheit kann von einem Einlauftreiber und einer Abzugswalze unterstützt werden. Der Betrieb beziehungsweise der Lauf der Anlagenbauteile Haspel, Einlauftreiber, Richteinheit und Abzugswalze können über Regler miteinander synchronisiert und in Geschwindigkeitsregelung oder Momentenregelung zueinander betrieben werden. Jede der Einheiten kann individuell, das heißt unabhängig von den jeweils anderen, generatorisch oder motorisch betrieben werden. Die Ausführung mit Abhaspel- und Richtgruppe bietet sich an, wenn das Bandmaterial nach dem flexiblen Walzen wieder zum Coil aufgewickelt und an anderer Stelle weiterverarbeitet wird. Es ist jedoch prinzipiell auch möglich, dass die Anlagenteile Bandspeicher, Vorschub und Vereinzelungseinheit unmittelbar an ein flexibles Walzen im fortlaufenden Prozess anschließen.According to one embodiment, the system can furthermore have a reel for unwinding the flexibly rolled strip material and at least one straightening unit for straightening the flexibly rolled strip material. Several straightening units can in particular when processing particularly thick strips and / or for strips with large absolute thickness jumps of, for example, more than 1 mm. The reel and the at least one straightening unit, which can also be referred to collectively as the unwinding and straightening group, are connected upstream of the strip storage device. The first and second feed devices for the separating device are preferably independent of the feed of the unwinding and straightening group in terms of control technology. The unwinding and straightening group conveys the strip into the strip store and makes the flexibly rolled strips available for processing by the other system. Here, the conveying or unwinding speed of the unwinding and straightening group can be regulated by means of a level sensor of the belt storage unit. The level sensor can, for example, be an ultrasonic unit, which senses the depth of the tape loop hanging in the tape store and forwards a corresponding signal to the controller for the unwinding and straightening group. It goes without saying that other sensors can also be used, such as an optical sensor, a capacitive and / or an inductive sensor. The straightening unit can be supported by an infeed driver and a take-off roller. The operation or the running of the system components reel, infeed driver, straightening unit and take-off roller can be synchronized with each other via controllers and operated in speed control or torque control. Each of the units can be operated individually, i.e. independently of the others, as a generator or as a motor. The version with a decoiler and straightening group is ideal if the strip material is rewound into a coil after flexible rolling and is further processed elsewhere. In principle, however, it is also possible for the system parts, strip storage, feed and separation unit to be connected directly to flexible rolling in the continuous process.

Der Bandspeicher dient zur Entkopplung der Abwickel- und Richtgruppe der Anlage von dem auf Basis von Vorschublängen arbeitenden, positionsgeregelten Teil der Anlage mit den Komponenten Dickenmessung, Vorschübe, Längenmessungen und Vereinzelungseinrichtung. Es ist insbesondere vorgesehen, dass für die längenbasierte Vorschubsteuerung der Vereinzelungsanlage lediglich die Längenmesswerte der hinter dem Bandspeicher liegenden Längenmesseinrichtung zugrunde gelegt werden. Möglicherweise von einer vor der Speichereinrichtung erfasste Längenmesswerte können bei der vorliegenden Vorschubsteuerung unbeachtet bleiben.The strip storage unit is used to decouple the unwinding and straightening group of the system from the position-controlled part of the system that works on the basis of feed lengths and has the components of thickness measurement, feeds, length measurements and the separation device. In particular, provision is made for the length-based feed control of the separating system to be based only on the length measurement values of the length measuring device located behind the strip storage device. Length measurement values possibly acquired by a device in front of the storage device can be ignored in the present feed control.

Die Dickenmesseinheit ist in Durchlaufrichtung hinter dem Bandspeicher und vor der ersten Vorschubeinrichtung angeordnet. Unmittelbar hinter der ersten Vorschubeinrichtung befindet sich die zugehörige erste Längenmesseinheit. Die erste Längenmesseinheit ist ausgestaltet, die Länge des Bandmaterials fortlaufend zu erfassen. Auch die Dickenmessung erfolgt insbesondere fortlaufend während des Bandvorschubs. Vorzugsweise sind die Längenmesseinrichtung und die Dickenmesseinrichtung messtechnisch miteinander gekoppelt. Dabei ist insbesondere vorgesehen, dass die Längenmesseinheit Triggersignale erzeugt und an die Dickenmesseinheit weitergibt, um Dickenmessungen auszulösen, welche dann wiederum erfasst werden.The thickness measuring unit is arranged behind the strip storage unit and in front of the first feed device in the direction of passage. The associated first length measuring unit is located directly behind the first feed device. The first length measuring unit is designed to continuously record the length of the strip material. The thickness measurement is also carried out continuously while the strip is being fed. Preferably, the length measuring device and the thickness measuring device are metrologically coupled to one another. It is provided in particular that the length measuring unit generates trigger signals and forwards them to the thickness measuring unit in order to trigger thickness measurements, which are then recorded in turn.

Nach einer Ausgestaltung kann die Längenmesseinheit ein Messrad umfassen, das auf einer ersten Seite des Bandmaterials in Anlagekontakt ist, sowie ein Stützrad, das als Gegenlager für das Messrad mit einer entgegengesetzten Seite des Bandmaterials in Anlagekontakt ist. Die Lauffläche des Messrads kann beispielsweise aus einem Stahlwerkstoff hergestellt sein. Die Lauffläche des Stützrads kann beispielsweise aus einem elastischen Werkstoff hergestellt ist. Es versteht sich, dass die vorstehend beschriebene Ausgestaltung der Längenmesseinheit auch für jede andere Längenmesseinheit der Anlage verwendet werden kann.According to one embodiment, the length measuring unit can comprise a measuring wheel, which is in contact on a first side of the strip material, and a support wheel, which is in contact with an opposite side of the strip material as a counter bearing for the measuring wheel. The running surface of the measuring wheel can be made from a steel material, for example. The running surface of the support wheel can be made of an elastic material, for example. It goes without saying that the configuration of the length measuring unit described above can also be used for any other length measuring unit in the system.

Nach einer bevorzugten Ausführungsform sind zwei Längenmesseinrichtungen vorgesehen, eine erste Längenmesseinrichtung, die der ersten Vorschubeinrichtung zugeordnet ist, und eine zweite Längenmesseinrichtung, die der zweiten Vorschubeinrichtung zugeordnet ist. Die zweite Längenmesseinrichtung ist dabei in Vorschubrichtung des Bandmaterials hinter der zweiten Vorschubeinrichtung und vor der Vereinzelungseinrichtung angeordnet. Für eine hohe Messgenauigkeit ist es günstig, wenn die Messeinrichtungen jeweils möglichst nah an den jeweiligen Vorschüben angeordnet sind. Vorzugsweise weist die erste Längenmesseinrichtung zur ersten Vorschubeinrichtung einen ersten Abstand auf, der kleiner ist, als das 0,5-fache, insbesondere kleiner als das 0,25-fache des Abstands zwischen der ersten Vorschubeinrichtung und der zweiten Vorschubeinrichtung. Die zweite Längenmesseinrichtung kann zur zweiten Vorschubeinrichtung einen zweiten Abstand aufweisen, der kleiner ist, als das 0,5-fache, insbesondere kleiner als das 0,25-fache des Abstands zwischen der zweiten Vorschubeinrichtung und der Vereinzelungseinrichtung.According to a preferred embodiment, two length measuring devices are provided, a first length measuring device which is assigned to the first feed device, and a second length measuring device which is assigned to the second feed device. The second length measuring device is arranged in the feed direction of the strip material behind the second feed device and in front of the separating device. For high measuring accuracy, it is advantageous if the measuring devices are each arranged as close as possible to the respective feeds. The first length measuring device preferably has a first distance from the first feed device which is less than 0.5 times, in particular less than 0.25 times the distance between the first feed device and the second feed device. The second length measuring device can have a second distance from the second feed device which is smaller than 0.5 times, in particular less than 0.25 times the distance between the second feed device and the separating device.

Die beiden Vorschubeinrichtungen arbeiten synchron, um das Bandmaterial aus dem Bandspeicher zur Vereinzelungseinheit zuzuführen. Dabei üben beide Vorschübe jeweils eine Zugkraft auf das Bandmaterial aus, um dieses zu bewegen. Damit das Bandmaterial zwischen den beiden Vorschubeinrichtungen plan gehalten wird, ist insbesondere vorgesehen, dass die in Durchlaufrichtung nachgelagerte zweite Vorschubeinrichtung schneller antreibbar ist, als die vorgelagerte erste Vorschubeinrichtung. Auf diese Weise wird das Bandmaterial zwischen den beiden Vorschubeinrichtungen leicht auf Zug gehalten und ist damit plan, was sich günstig auf die Messwertgenauigkeit auswirkt.The two feed devices work synchronously in order to feed the strip material from the strip store to the separating unit. Both feeders each exert a tensile force on the strip material in order to move it. So that the strip material is kept flat between the two feed devices, it is provided in particular that the second feed device located downstream in the direction of passage can be driven faster than the upstream first feed device. In this way, the strip material is kept under tension between the two feed devices and is therefore flat, which has a positive effect on the measurement accuracy.

Nach einer bevorzugten Ausführungsform beträgt der Abstand zwischen der Dickenmesseinrichtung und der Vereinzelungseinrichtung mindestens das Doppelte der Platinenlänge einer aus dem Bandmaterial auszuschneidenden Platine. Insbesondere beträgt der Abstand mindestens das Doppelte einer Platinenlänge plus dem Vorschubweg, den das Bandmaterial während der Rechenzeit für eine auszuschneidende Platine zurücklegt.According to a preferred embodiment, the distance between the thickness measuring device and the separating device is at least twice the blank length of a blank to be cut out of the strip material. In particular, the distance is at least twice the length of a blank plus the feed path which the strip material covers during the computing time for a blank to be cut out.

Die Vereinzelungseinrichtung kann an die Erfordernisse an das zu vereinzelnde Flachprodukt ausgewählt werden und beispielsweise eine Querteilschere oder ein Strahlschneideinheit, insbesondere eine Laserschneideinheit, umfassen. Zum einfachen Ablängen von Platinen kann eine Querteilschere, ein Querteillaser oder einer vergleichbaren Strahlanlage zum Querteilen, verbunden mit der Bandvorschubanlage verwendet werden. Zum Erzeugen von Formschnitten kann eine Pressenlinie mit geeigneten Trennwerkzeugen oder eine Strahlschneideinheit, insbesondere Laserstrahleinheit, jeweils verbunden mit der Bandvorschubanlage, verwendet werden.The separating device can be selected according to the requirements of the flat product to be separated and can comprise, for example, a cross-cutting shears or a beam cutting unit, in particular a laser cutting unit. A cut-to-length shear, a cut-to-length laser or a comparable beam system can be used to cut blanks to length, combined with the strip feed system. A press line with suitable cutting tools or a beam cutting unit, in particular a laser beam unit, each connected to the strip feed system, can be used to produce shaped cuts.

Eine Lösung der oben genannten Aufgabe liegt ferner in einem Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial, insbesondere mittels einer Anlage nach einer der oben genannten Ausführungsformen, umfassend die Schritte: Zwischenspeichern des flexibel gewalzten Bandmaterials mittels einer Speichereinrichtung; Vorschieben des Bandmaterials aus dem Zwischenspeicher mittels einer ersten Vorschubeinrichtung und einer zweiten Vorschubeinrichtung; kontinuierliches Messen einer Dicke des Bandmaterials mittels einer Dickenmesseinrichtung während das Bandmaterial vorgeschoben wird, wobei das Messen der Dicke in Vorschubrichtung des Bandmaterials vor der ersten Vorschubeinrichtung erfolgt; kontinuierliches Messen einer Länge des Bandmaterials mittels einer Längenmesseinrichtung während das Bandmaterial vorgeschoben wird, wobei das Messen der Länge in Vorschubrichtung des Bandmaterials hinter der ersten Vorschubeinrichtung erfolgt; Berechnen eines Ist-Dickenprofils für eine aus dem Bandmaterial zu vereinzelnde Platine aus gemessenen Dickenwerten und zugehörigen gemessenen Längenwerten; Vergleichen des berechneten Ist-Dickenprofils mit einem vorgegebenen Solldickenprofil und Berechnen einer Vorschublänge für die aus dem Bandmaterial zu vereinzelnde Platine; Zuführen des Bandmaterials zu einer Vereinzelungseinrichtung mittels der ersten Vorschubeinrichtung und der zweiten Vorschubeinrichtung auf Basis der berechneten Vorschublänge.A solution to the above-mentioned object is also a method for separating flexibly rolled strip material, in particular by means of a system according to one of the above-mentioned embodiments, comprising the steps: intermediate storage of the flexibly rolled strip material by means of a storage device; Advancing the strip material from the intermediate store by means of a first advancing device and a second advancing device; continuous measurement of a Thickness of the strip material by means of a thickness measuring device while the strip material is being advanced, the thickness being measured in the direction of advance of the strip material in front of the first advance device; continuous measurement of a length of the strip material by means of a length measuring device while the strip material is being advanced, the length being measured in the advance direction of the strip material behind the first advance device; Calculating an actual thickness profile for a blank to be separated from the strip material from measured thickness values and associated measured length values; Comparing the calculated actual thickness profile with a predetermined nominal thickness profile and calculating a feed length for the blank to be separated from the strip material; Feeding the strip material to a separating device by means of the first feed device and the second feed device on the basis of the calculated feed length.

Durch die Längenmessung hinter der jeweiligen Vorschubeinheit erfolgt eine Entkopplung der Vorschubbewegung von der Längenmessung, was zu besonders genauen Messergebnissen führt. Auch die Dickenmessung vor der ersten Vorschubeinheit wirkt sich günstig auf die Messgenauigkeit aus, da der durch die erste Vorschubeinrichtung aufgebrachte Vorschub an Hand der zuvor durch die Dickenmesseinheit ermittelten Werte gesteuert werden kann. Die Verwendung der zweiten positionsgeregelten Vorschubeinrichtung mit zugehöriger Längenmesseinheit trägt zu einem planen, verwerfungsfreien und bandschlaufenfreien Bandlauf zwischen der Dickenmesseinheit und der Trennstelle bei, was wiederum eine präzise Positionierung der Referenzkanten der Vorschublängen in Bezug auf die Trennstelle gewährleistet. Es ergeben sich für das Verfahren insgesamt dieselben Vorteile, wie für die Anlage. Ein wiederkehrendes Dickenprofil des flexibel gewalzten Bandes kann genau erkannt, mit dem gewünschten Sollprofil verglichen und exakt relativ zur Trennstelle der Vereinzelungseinrichtung positioniert werden. Darüber hinaus können Bereiche des Metallbandes, welche die Dickentoleranzen nicht einhalten, erkannt und aussortiert werden. Es versteht sich, dass alle verfahrensmäßigen Merkmale sinngemäß auf die Anlage übertragbar sind, und umgekehrt, alle anlagenbezogenen Merkmale auf das Verfahren.The length measurement behind the respective feed unit decouples the feed movement from the length measurement, which leads to particularly precise measurement results. The thickness measurement in front of the first feed unit also has a favorable effect on the measuring accuracy, since the feed applied by the first feed device can be controlled on the basis of the values previously determined by the thickness measuring unit. The use of the second position-controlled feed device with the associated length measuring unit contributes to a flat, distortion-free and tape loop-free tape run between the thickness measuring unit and the cutting point, which in turn ensures precise positioning of the reference edges of the feed lengths in relation to the cutting point. The overall advantages for the process are the same as for the system. A recurring thickness profile of the flexibly rolled strip can be precisely recognized, compared with the desired target profile and precisely positioned relative to the separating point of the separating device. In addition, areas of the metal strip that do not comply with the thickness tolerances can be identified and sorted out. It goes without saying that all procedural features can be applied to the system, and vice versa, all system-related characteristics to the process.

Nach einer Verfahrensführung wird das Bandmaterial vom positionsgeregelten ersten beziehungsweise zweiten Bandvorschub aus dem Bandspeicher gezogen. Hierbei wird das flexible gewalzte Band von der Dickenmesseinheit laufend bezüglich der Dicke vermessen. Hierbei nimmt die Dickenmesseinheit auf Basis des gemessenen Dicken unter Berücksichtigung der zugehörigen Längenmesswerte eine Bewertung vor, ob das flexible gewalzte Band den geforderten Dickentoleranzen entspricht oder nicht. Das Vergleichen des ermittelten Ist-Dickenprofils mit dem vorgegebenen Solldickenprofil erfolgt insbesondere auch unter Berücksichtigung der zugehörigen Toleranzen des Solldickenprofils, was durch eine Hüllkurve dargestellt werden kann. Dabei wird rechnerisch überprüft, ob das ermittelte Ist-Profil innerhalb der Hüllkurve des Sollprofils liegt. Aus dem Ergebnis des Vergleichs können die Vorschublänge für das Band beziehungsweise die hieraus auszuschneidende Platine sowie die Schneidposition der Platine im Band berechnet werden. Das Band wird in Bereiche, die in Ordnung sind (sogenannte i.O.-Teile), und solche, die nicht in Ordnung sind (sogenannte n.i.O.-Teile) unterteilt. Die Lage und Länge dieser einzelnen Bereiche im Band wird von der Dickenmesseinrichtung an die erste Vorschubeinrichtung weitergegeben. Der erste Vorschubeinrichtung, und daran gekoppelt auch die zweite Vorschubeinrichtung, können dann die von der Dickenmesseinheit angewiesenen Vorschübe durchführen und die Referenzkanten der einzelnen Vorschublängen maßgenau an die Trennstelle der Trenneinrichtung positionieren. Dabei kann die Vorschubeinheit an die weiteren Anlagenteile die Information weiterleiten, ob es sich um eine Vorschublänge mit i.O.-Dickenprofil oder n.i.O.-Dickenprofil handelt.After the process has been carried out, the strip material is pulled out of the strip store by the position-controlled first or second strip feed. Here the flexible rolled strip is continuously measured in terms of thickness by the thickness measuring unit. Here, the thickness measuring unit makes an assessment based on the measured thickness, taking into account the associated length measurement values, as to whether or not the flexible rolled strip corresponds to the required thickness tolerances. The comparison of the determined actual thickness profile with the specified target thickness profile also takes place, in particular, taking into account the associated tolerances of the target thickness profile, which can be represented by an envelope curve. In doing so, a computational check is carried out to determine whether the determined actual profile lies within the envelope curve of the target profile. From the result of the comparison, the feed length for the strip or the blank to be cut from it and the cutting position of the blank in the strip can be calculated. The tape is divided into areas that are OK (so-called OK parts) and those that are not OK (so-called NOK parts). The position and length of these individual areas in the strip are passed on from the thickness measuring device to the first feed device. The first feed device, and also the second feed device coupled to it, can then carry out the feeds instructed by the thickness measuring unit and position the reference edges of the individual feed lengths precisely at the cutting point of the cutting device. The feed unit can forward the information to the other parts of the system as to whether it is a feed length with an OK thickness profile or an incorrect thickness profile.

Die Längenmesseinrichtung ist ausgestaltet, um einen für den Vorschubweg des Bandes repräsentierenden Längenwert kontinuierlich zu erfassen. Vorzugsweise werden hierfür hochpräzise arbeitende Längenmesseinrichtungen verwendet, die eine Messtoleranz von bis zu 0,5 mm pro Meter Bandlänge, insbesondere von bis zu 0,1 mm pro Meter Bandlänge, aufweisen. Die Längenmessung kann beispielsweise mittels eines Messrads erfolgen, das mit dem vorbeigeführten Bandmaterial in Anlagekontakt ist. Die Längenmesseinrichtung kann das Bandmaterial von Anfang bis Ende ohne Unterbrechung vermessen. Als Startpunkt der Messung kann der Bandanfang verwendet werden, welcher entsprechend die Längen-Nullposition definiert. Ab Startpunkt der Längenmessung wird die Länge fortlaufend erfasst.The length measuring device is designed to continuously record a length value representing the feed path of the strip. For this purpose, high-precision length measuring devices are preferably used which have a measuring tolerance of up to 0.5 mm per meter of strip length, in particular of up to 0.1 mm per meter of strip length. The length measurement can be carried out, for example, by means of a measuring wheel that is in contact with the strip material that has passed by. The length measuring device can measure the strip material from start to finish without interruption. The beginning of the tape can be used as the starting point of the measurement and defines the length zero position accordingly. The length is recorded continuously from the start of the length measurement.

Nach einer bevorzugten Verfahrensführung wird die erste Längenmesseinrichtung des ersten Vorschubs am Startpunkt mit der Dickenmessung hinsichtlich der Länge referenziert. Dies kann über kontinuierliche Meldung des Längenmesswertes von der ersten Längenmesseinrichtung an die Dickenmesseinrichtung erfolgen. Die Meldung der Längenmesswerte kann absolut oder inkrementell erfolgen. Die Dickenmessung skaliert die Dickenmesswerte anhand der gemeldeten Längenmesswerte über die Bandlänge. Auf diese Weise können beide Messgeräte vom exakt gleichen Bandlängen-Nullpunkt aus arbeiten. Das gemessene Ist-Dickenprofil kann mit dem vorgegebenen Solldickenprofil zuverlässig verglichen und eine entsprechende Bewertung hinsichtlich der Teile, die in Ordnung sind, und solcher, die nicht in Ordnung sind vorgenommen werden. Das Referenzieren der Längenmesseinrichtung mit der Dickenmesseinrichtung ist ferner für die lagegenaue Positionierung der Vorschublängen durch den Vorschub in Bezug auf eine Referenzschnittstelle für die Vereinzelung von Wichtigkeit. Alternativ oder in Ergänzung kann auch die zweite Längenmesseinrichtung des zweiten Vorschubs am Startpunkt mit der Dickenmessung hinsichtlich der Länge referenziert werden.According to a preferred method, the first length measuring device is the first feed at the starting point with the thickness measurement referenced in terms of length. This can be done by continuously reporting the length measurement value from the first length measuring device to the thickness measuring device. The length measurement values can be reported absolutely or incrementally. The thickness measurement scales the thickness measurement values based on the reported length measurement values over the strip length. In this way, both measuring devices can work from exactly the same strip length zero point. The measured actual thickness profile can be compared reliably with the specified nominal thickness profile and a corresponding assessment can be made with regard to the parts that are in order and those that are not in order. Referencing the length measuring device with the thickness measuring device is also important for the precise positioning of the feed lengths by the feed in relation to a reference interface for the separation. Alternatively or in addition, the second length measuring device of the second feed can also be referenced with regard to the length at the starting point with the thickness measurement.

Nach einer Ausführung kann eine weitere Längenmessung des Bandmaterials mittels einer zweiten Längenmesseinrichtung während des Zuführens des Bandmaterials zu der Vereinzelungseinrichtung durchgeführt werden, wobei das Messen der Länge mit der zweiten Messeinrichtung in Vorschubrichtung des Bandmaterials hinter der zweiten Vorschubeinrichtung erfolgt. Es kann als weiterer Verfahrensschritt ferner vorgesehen sein: Vergleichen der von der ersten Längenmesseinrichtung ermittelten ersten Längenmesswerte mit den von der zweiten Längenmesseinrichtung ermittelten zugehörigen zweiten Längenmesswerten; und Abschalten der Anlage, wenn eine Differenz zwischen den ersten Längenmesswerten und den zweiten Längenmesswerten einen vorgegebenen Differenzwert überschreitet. Durch diese Ausgestaltung wird eine Messredundanz erzeugt, so dass das Risiko von Fehlteilen reduziert wird.According to one embodiment, a further length measurement of the strip material can be carried out by means of a second length measuring device while the strip material is being fed to the separating device, the length being measured with the second measuring device in the feed direction of the strip material behind the second feed device. As a further method step, the following can also be provided: comparing the first length measurement values determined by the first length measurement device with the associated second length measurement values determined by the second length measurement device; and switching off the system if a difference between the first length measurement values and the second length measurement values exceeds a predetermined difference value. This configuration creates a measurement redundancy so that the risk of missing parts is reduced.

Nach einer Verfahrensführung kann zwischen der Dickenmessvorrichtung und der ersten Vorschubeinrichtung ein fester Abstand eingestellt werden. Dieser Abstand wird präzise vermessen, vorzugsweise mit einer Genauigkeit von bis zu +/- 0,2 mm, und während des Betriebs der Anlage beibehalten. Auf diese Weise kann die Längenreferenz zwischen der Dickenmessung einerseits und dem Vorschub bzw. der Längenmessung andererseits über die gesamte Länge des Bandmaterials zuverlässig gewährleistet werden.After the process has been carried out, a fixed distance can be set between the thickness measuring device and the first feed device. This distance is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system. In this way, the length reference between the thickness measurement on the one hand and the feed or the length measurement on the other hand, reliably guaranteed over the entire length of the strip material.

Zur lagegenauen Positionierung einer Referenzkante einer Vorschublänge auf eine Referenz-Trennstelle der Vereinzelungseinrichtung kann nach einer möglichen Verfahrensführung zwischen der Dickenmessvorrichtung und der Vereinzelungseinrichtung ein fester Abstand eingestellt werden. Dieser Abstand wird präzise vermessen, vorzugsweise mit einer Genauigkeit von bis zu +/- 0,2 mm, und während des Betriebs der Anlage beibehalten.For positionally accurate positioning of a reference edge of a feed length on a reference separating point of the separating device, a fixed distance can be set between the thickness measuring device and the separating device according to a possible procedure. This distance is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system.

Nach einer weiteren Verfahrensführung kann die Messstrecke zwischen der Dickenmessung und der Vereinzelungseinrichtung auf mindestens das Doppelte der Platinenlänge einer aus dem Bandmaterial auszuschneidenden Platine eingestellt werden. Insbesondere kann der Abstand zwischen Dickenmessung und Vereinzelungseinrichtung auf mindestens das Doppelte einer Platinenlänge plus dem Vorschubweg, den das Band während der Rechenzeit für eine auszuschneidende Platine zurücklegt, eingestellt werden.According to a further procedure, the measuring section between the thickness measurement and the separating device can be set to at least twice the blank length of a blank to be cut out of the strip material. In particular, the distance between the thickness measurement and the separating device can be set to at least twice the length of a blank plus the feed path that the strip covers during the computing time for a blank to be cut out.

Sofern im Rahmen der vorliegenden Offenbarung auf einen Abstand zwischen zwei Vorrichtungen Bezug genommen wird, kann sich dieser auf einen vorgegebenen Referenzpunkt der jeweiligen Vorrichtung beziehen, beispielsweise eine Messebene bei den Messeinrichtungen, oder eine Trennstelle bei der Vereinzelungseinrichtung.If in the context of the present disclosure reference is made to a distance between two devices, this can refer to a predefined reference point of the respective device, for example a measuring plane in the measuring devices or a separation point in the separating device.

Nach einer bevorzugten Verfahrensführung wird die zweite Vorschubeinrichtung synchron zur ersten Vorschubeinrichtung betrieben, insbesondere mit der gleichen Längenskala, wie die erste Vorschubeinrichtung und die Dickenmesseinheit. Durch eine Regelung derart, dass die zweite Vorschubeinheit gegenüber der ersten Vorschubeinheit leicht vorläuft, erzeugt die zweite Vorschubeinheit in dem Bandabschnitt, der sich innerhalb der Messtrecke befindet, einen leichten Bandzug, der einen planen Bandlauf gewährleistet.According to a preferred method, the second feed device is operated synchronously with the first feed device, in particular with the same length scale as the first feed device and the thickness measuring unit. By regulating in such a way that the second feed unit advances slightly with respect to the first feed unit, the second feed unit generates a slight tension on the tape in the tape section that is located within the measuring section, which ensures a flat tape run.

Bevorzugte Ausführungsbeispiele werden nachstehend anhand der Zeichnungsfiguren erläutert. Hierin zeigt:

Figur 1
eine erfindungsgemäße Anlage zum Vereinzeln von flexibel gewalztem Bandmaterial schematisch in dreidimensionaler Darstellung in einer ersten Ausführungsform;
Figur 2
ein erfindungsgemäßes Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial;
Figur 3
den Dickenverlauf einer beispielhaften Platine, die mit der Anlage und dem Verfahren gemäß Figur 1 und 2 herstellbar ist;
Figur 4
den Dickenverlauf einer weiteren beispielhaften Platine, die mit der Anlage und dem Verfahren gemäß den Figuren 1 und 2 herstellbar ist;
Figur 5
den Dickenverlauf einer weiteren beispielhaften Platine, die mit der Anlage und dem Verfahren gemäß Figur 1 und 2 herstellbar ist;
Figur 6
eine beispielhafte Abfolge mehrerer Platinen nach Figur 3 beziehungsweise Figur 4, die mit der erfindungsgemäßen Anlage beziehungsweise Verfahren hergestellt sind;
Figur 7
eine erfindungsgemäße Anlage zum Vereinzeln von flexibel gewalztem Bandmaterial schematisch in dreidimensionaler Darstellung in einer zweiten Ausführungsform;
Figur 8
einen beispielhaften Formschnitt in Draufsicht, der mit der Anlage gemäß Figur 7 beziehungsweise dem Verfahren gemäß Figur 2 herstellbar ist;
Figur 9
eine beispielhafte Abfolge mehrerer Formschnitte nach Figur 8, die mit der erfindungsgemäßen Anlage beziehungsweise Verfahren hergestellt sind.
Preferred embodiments are explained below with reference to the drawing figures. Herein shows:
Figure 1
a system according to the invention for separating flexibly rolled strip material schematically in three-dimensional representation in a first embodiment;
Figure 2
a method according to the invention for separating flexibly rolled strip material;
Figure 3
the thickness profile of an exemplary blank produced with the system and the method according to Figure 1 and 2 can be produced;
Figure 4
the thickness profile of a further exemplary board that is produced with the system and the method according to FIGS Figures 1 and 2 can be produced;
Figure 5
the thickness profile of a further exemplary blank that was produced with the system and the method according to FIG Figure 1 and 2 can be produced;
Figure 6
an exemplary sequence of several boards Figure 3 respectively Figure 4 which are produced with the system or method according to the invention;
Figure 7
a system according to the invention for separating flexibly rolled strip material schematically in a three-dimensional representation in a second embodiment;
Figure 8
an exemplary shaped section in plan view, the with the system according to Figure 7 or according to the procedure Figure 2 can be produced;
Figure 9
an exemplary sequence of several shaped cuts Figure 8 which are produced with the system or method according to the invention.

Die Figuren 1 bis 9 werden nachstehend gemeinsam beschrieben. In Figur 1 ist eine erfindungsgemäße Anlage 2 zum Vereinzeln von flexibel gewalztem Bandmaterial 3 gezeigt. Flexibel gewalztes Bandmaterial bedeutet, dass ein Bandmaterial mit einer im Wesentlichen konstanten Blechdicke über der Länge mittels Walzen derart gewalzt wird, dass es längs der Walzrichtung eine variable Blechdicke erhält. Nach dem flexiblen Walzen hat das Bandmaterial 3 in Walzrichtung unterschiedliche Dicken über der Länge. Das Bandmaterial 3 wird nach dem flexiblen Walzen wieder zum Coil 4 aufgewickelt, so dass es dem nächsten Verfahrensschritt zugeführt werden kann, oder es kann gegebenenfalls direkt weiterverarbeitet werden.The Figures 1 to 9 are described collectively below. In Figure 1 a system 2 according to the invention for separating flexibly rolled strip material 3 is shown. Flexibly rolled strip material means that a strip material with an essentially constant sheet thickness is rolled in this way over its length by means of rollers that it receives a variable sheet thickness along the rolling direction. After the flexible rolling, the strip material 3 has different thicknesses over the length in the rolling direction. After flexible rolling, the strip material 3 is wound up again to form the coil 4, so that it can be fed to the next process step, or it can, if necessary, be further processed directly.

Vorliegend ist ein Coil 4 aus flexibel gewalztem Bandmaterial als Ausgangsmaterial gezeigt. Die Anlage 2 umfasst eine Haspel 5 zum Abwickeln des flexibel gewalzten Bandmaterials 3 und eine Richteinheit 6 zum Richten des flexibel gewalzten Bandmaterials. Die Richteinheit 6 umfasst eine Mehrzahl von Rollen, insbesondere zwischen 7 bis 23 Rollen, die das Bandmaterial durchläuft. Zwischen der Haspel 5 und der Richteinheit 6 kann ein Einlauftreiber 7 vorgesehen sein, der das Bandmaterial 3 von der Haspel abzieht und der Richteinheit zuführt. In Durchlaufrichtung des Bandes hinter der Richteinheit 6 kann eine Abzugswalze 8 angeordnet sein, die eine Vorschubkraft auf das Bandmaterial 3 überträgt. Der Betrieb der Anlagenkomponenten Haspel, Einlauftreiber, Richteinheit und Abzugswalze können über Regler miteinander synchronisiert und in Geschwindigkeitsregelung oder Momentenregelung zueinander betrieben werden. Jede der Einheiten kann individuell, das heißt unabhängig von den jeweils anderen, generatorisch oder motorisch betrieben werden. In der Figur 1 sind die von den jeweiligen Komponenten 5, 6, 7, 8 auf das Bandmaterial übertragbaren Momente M5, M6, M7, M8 eingezeichnet.A coil 4 made of flexibly rolled strip material is shown as the starting material. The system 2 comprises a reel 5 for unwinding the flexibly rolled strip material 3 and a straightening unit 6 for straightening the flexibly rolled strip material. The straightening unit 6 comprises a plurality of rollers, in particular between 7 to 23 rollers, through which the strip material passes. An infeed driver 7 can be provided between the reel 5 and the straightening unit 6, which pulls the strip material 3 from the reel and feeds it to the straightening unit. A take-off roller 8, which transmits a feed force to the strip material 3, can be arranged behind the straightening unit 6 in the direction of passage of the strip. The operation of the system components: reel, infeed driver, straightening unit and take-off roller can be synchronized with one another via controllers and operated with one another in speed control or torque control. Each of the units can be operated individually, i.e. independently of the others, as a generator or as a motor. In the Figure 1 the torques M5, M6, M7, M8 that can be transferred to the strip material by the respective components 5, 6, 7, 8 are shown.

In Bandvorschubrichtung hinter der Abwickel- und Richtgruppe 10 ist eine Speichereinrichtung 9 vorgesehen, die ausgestaltet ist, um einen jeweiligen Teilabschnitt des Bandes 3 zwischenzuspeichern. Dabei wird eine Vorschubbewegung der Abwickel- und Richtgruppe 10 von einer Vorschubbewegung der Vereinzelungsgruppe 12 entkoppelt. Die Abwickel- und Richtgruppe 10 fördert das Band 3 in den Bandspeicher 9, der das flexibel gewalzte Band 3 für die weitere Verarbeitung in der Vereinzelungsgruppe 12 zur Verfügung stellt. Die Förder- beziehungsweise Abwickelgeschwindigkeit der Abwickel- und Richtgruppe 10 kann mittels eines Füllstandsgebers 13 des Bandspeichers 9 geregelt werden. Der Füllstandsgeber 13 kann beispielsweise einen Ultraschallsensor oder einen optischen Sensor umfassen, welcher die Tiefe der in den Bandspeicher hängenden Bandschlaufe sensiert und ein entsprechendes Signal an den Regler für die Abwickel- und Richtgruppe 10 weitergibt.In the direction of tape feed behind the unwinding and straightening group 10, a storage device 9 is provided which is designed to temporarily store a respective section of the tape 3. A feed movement of the unwinding and straightening group 10 is decoupled from a feed movement of the separating group 12. The unwinding and straightening group 10 conveys the strip 3 into the strip store 9, which makes the flexibly rolled strip 3 available for further processing in the separating group 12. The conveying or unwinding speed of the unwinding and straightening group 10 can be regulated by means of a level sensor 13 of the belt storage unit 9. The fill level sensor 13 can comprise, for example, an ultrasonic sensor or an optical sensor which senses the depth of the tape loop hanging in the tape storage device and forwards a corresponding signal to the controller for the unwinding and straightening group 10.

Die Anlage 2 umfasst als weitere Komponenten hinter der Speichereinrichtung 9 eine Dickenmesseinrichtung 14 zur fortlaufenden Messung der Dicke des Bandmaterials, eine erste Vorschubeinrichtung 15, eine der ersten Vorschubeinrichtung zugeordnete erste Längenmesseinrichtung 16 zur kontinuierlichen Messung der Länge des Bandmaterials 3, eine zweite Vorschubeinrichtung 17, die mit Abstand hinter der ersten Vorschubeinrichtung 15 angeordnet ist, eine der zweiten Vorschubeinrichtung 17 zugeordnete zweite Längenmesseinrichtung 18 und eine Vereinzelungseinheit 19 zum Vereinzeln des Bandmaterials 3.The system 2 comprises, as further components behind the storage device 9, a thickness measuring device 14 for continuously measuring the thickness of the strip material, a first feed device 15, a first length measuring device 16 assigned to the first feed device for continuous measurement of the length of the strip material 3, a second feed device 17, which is arranged at a distance behind the first feed device 15, a second length measuring device 18 assigned to the second feed device 17 and a separating unit 19 for separating the strip material 3.

Die beiden Vorschubeinrichtungen 15, 17 werden synchron betrieben und sind ausgestaltet, um das Bandmaterial 3 in Abhängigkeit von der Dickenmessung und der Längenmessung aus der Speichereinrichtung 9 zur Vereinzelungseinrichtung 19 zu bewegen. Dabei üben die beiden Vorschübe 15, 17 jeweils eine Vorschubkraft auf das Bandmaterial aus, um dieses zu bewegen. Damit das Bandmaterial zwischen den beiden Vorschubeinrichtungen 15, 17 plan gehalten wird, kann die zweite Vorschubeinrichtung 17 mit geringem Vorlauf gegenüber der ersten Vorschubeinrichtung 15 angetrieben werden. Eine Besonderheit der vorliegenden Anordnung ist, dass die Dickenmesseinrichtung 14 in Durchlaufrichtung R des Bandmaterials 3 hinter der Speichereinrichtung 9 und vor der ersten Vorschubeinrichtung 15 angeordnet ist, und, dass die erste Längenmesseinrichtung 16 separat von der ersten Vorschubeinrichtung 15 gestaltet und dieser nachgelagert ist. Für die längenbasierte Vorschubsteuerung der Vereinzelungsgruppe 12 werden lediglich die Längenmesswerte der hinter dem Bandspeicher 9 liegenden Längenmesseinrichtungen 16, 18 zugrunde gelegt.The two feed devices 15, 17 are operated synchronously and are designed to move the strip material 3 from the storage device 9 to the separating device 19 as a function of the thickness measurement and the length measurement. The two feeders 15, 17 each exert a feed force on the strip material in order to move it. So that the strip material is kept flat between the two feed devices 15, 17, the second feed device 17 can be driven with a slight advance relative to the first feed device 15. A special feature of the present arrangement is that the thickness measuring device 14 is arranged in the direction R of the strip material 3 behind the storage device 9 and in front of the first feed device 15, and that the first length measuring device 16 is designed separately from the first feed device 15 and is located downstream of it. For the length-based feed control of the separating group 12, only the length measurement values of the length measuring devices 16, 18 located behind the strip store 9 are used as a basis.

Die erste Längenmesseinrichtung 16 und die Dickenmesseinrichtung 14 sind messtechnisch miteinander gekoppelt. Für ein zuverlässiges Einhalten der Längenreferenz über der Bandlänge zwischen der Dickenmessung 14 einerseits und dem ersten Vorschub 15 beziehungsweise der ersten Längenmessung 16 andererseits wird ein festes Abtandsmaß A1 zwischen der Dickenmesseinrichtung 14 und der ersten Vorschubeinrichtung 15 eingestellt. Dieser Abstand A1 wird präzise vermessen, vorzugsweise mit einer Genauigkeit von bis zu +/- 0,2 mm, und während des Betriebs der Anlage beibehalten. Auf diese Weise kann die Längenreferenz zwischen der Dickenmessung einerseits und dem Vorschub bzw. der Längenmessung andererseits über die gesamte Länge des Bandmaterials zuverlässig gewährleistet werden. Während des Betriebs der Anlage 2 kann die Längenmesseinheit 16 Triggersignale B1 erzeugen und an die Dickenmesseinheit 14 weitergeben. Jedes Triggersignal B1 dient als Auslöser für eine Dickenmessung, so dass mit jedem Triggersignal der Längenmesseinheit 16 ein Dickenmesswert erzeugt und einem entsprechenden Längenmesswert zugeordnet wird. Es werden auf diese Weise Datensätze aus Paaren von Längen- und Dickenwerten generiert, woraus das Ist-Dickenprofil der aus dem Bandmaterial 3 auszuschneidenden Platine ermittelt werden kann.The first length measuring device 16 and the thickness measuring device 14 are metrologically coupled to one another. A fixed distance A1 is set between the thickness measuring device 14 and the first feeding device 15 to reliably maintain the length reference over the strip length between the thickness measurement 14 on the one hand and the first feed 15 or the first length measurement 16 on the other. This distance A1 is measured precisely, preferably with an accuracy of up to +/- 0.2 mm, and maintained during operation of the system. In this way, the length reference between the thickness measurement on the one hand and the feed or the length measurement on the other hand can be over the entire Length of the tape material can be reliably guaranteed. During the operation of the system 2, the length measuring unit 16 can generate trigger signals B1 and forward them to the thickness measuring unit 14. Each trigger signal B1 serves as a trigger for a thickness measurement, so that with each trigger signal of the length measuring unit 16 a thickness measurement value is generated and assigned to a corresponding length measurement value. In this way, data sets are generated from pairs of length and thickness values, from which the actual thickness profile of the blank to be cut from the strip material 3 can be determined.

Die erste und zweite Längenmesseinheit 16, 18 umfassen jeweils ein Messrad 20, 20', das mit einer ersten Seite des Bandmaterials 3 in Anlagekontakt ist, sowie ein Stützrad 21, 21', das als Gegenlager für das Messrad 20, 20' dient. Die Lauffläche der Messräder kann beispielsweise aus einem Stahlwerkstoff hergestellt sein. Die Lauffläche der Stützräder kann beispielsweise aus einem elastischen Werkstoff hergestellt sein. Es versteht sich jedoch, dass auch andere Formen von Längenmessungen, wie beispielsweise berührungslose Sensoren, verwendbar sind. Für eine hohe Messgenauigkeit der Längenmesswerte ist es günstig, wenn die Messeinrichtungen 16, 18 jeweils möglichst nah an den jeweiligen Vorschüben 15, 17 angeordnet sind. Dabei kann der Abstand zwischen der ersten Längenmesseinrichtung 16 und der ersten Vorschubeinrichtung 15 insbesondere kleiner als das 0,1-fache des Abstands der beiden Vorschubeinrichtungen 15, 17 zueinander sein. Die zweite Längenmesseinrichtung 18 kann zur zweiten Vorschubeinrichtung 17 einen Abstand aufweisen, der kleiner als das 0,1-fache des Abstands zwischen der zweiten Vorschubeinrichtung 17 und der Vereinzelungseinrichtung 19 ist.The first and second length measuring units 16, 18 each include a measuring wheel 20, 20 'that is in abutment contact with a first side of the strip material 3, and a support wheel 21, 21' that serves as a counter bearing for the measuring wheel 20, 20 '. The running surface of the measuring wheels can be made from a steel material, for example. The running surface of the support wheels can be made of an elastic material, for example. It goes without saying, however, that other forms of length measurements, such as, for example, contactless sensors, can also be used. For a high measurement accuracy of the length measurement values, it is advantageous if the measuring devices 16, 18 are each arranged as close as possible to the respective feeds 15, 17. The distance between the first length measuring device 16 and the first feed device 15 can in particular be smaller than 0.1 times the distance between the two feed devices 15, 17. The second length measuring device 18 can have a distance from the second feed device 17 which is smaller than 0.1 times the distance between the second feed device 17 and the separating device 19.

Es ist in Figur 1 ferner der Abstand A2 zwischen der Dickenmesseinrichtung 14 und der Vereinzelungseinrichtung 19 eingezeichnet. Dieser beträgt vorzugsweise mindestens das Doppelte der Platinenlänge L22 einer aus dem Bandmaterial 3 auszuschneidenden Platine 22 plus dem Vorschubweg, den das Bandmaterial während der Rechenzeit für eine auszuschneidende Platine zurücklegt.It is in Figure 1 the distance A2 between the thickness measuring device 14 and the separating device 19 is also shown. This is preferably at least twice the blank length L22 of a blank 22 to be cut out of the strip material 3 plus the feed path which the strip material covers during the computing time for a blank to be cut out.

Die Vereinzelungseinrichtung 19 kann an die Erfordernisse an das zu vereinzelnde Flachprodukt 22 ausgewählt werden und beispielsweise eine mechanische Trennvorrichtung, wie eine Querteilschere (wie vorliegend gezeigt), oder ein Strahlschneideinheit, insbesondere eine Laserschneideinheit, umfassen. Allgemein kann die Vereinzelungseinrichtung auch als Schneid- oder Trennvorrichtung bezeichnet werden. Die vorliegende Trennvorrichtung 19 ist ausgestaltet, um senkrecht zur Bandkante verlaufende Schnitte zu erzeugen. Es versteht sich jedoch, dass die Trennvorrichtung grundsätzlich hinsichtlich des zu erzeugenden Trennschnitts an die Endkontur der herzustellenden Platine angepasst sein kann. Beispielsweise kann die Trennvorrichtung auch ausgestaltet sein, um schräg zur Bandkante verlaufende Schnitte, oder auch gekrümmte Schnitte zu erzeugen. Hiermit kann gegebenenfalls die Schrottmenge reduziert werden.The separating device 19 can be selected according to the requirements of the flat product 22 to be separated and, for example, a mechanical separating device, such as a cross-cutting shears (as shown here) or a beam cutting unit, in particular a laser cutting unit. In general, the separating device can also be referred to as a cutting or separating device. The present cutting device 19 is designed to produce cuts running perpendicular to the edge of the strip. It goes without saying, however, that the separating device can in principle be adapted to the final contour of the blank to be produced with regard to the separating cut to be produced. For example, the separating device can also be designed to produce cuts running obliquely to the strip edge, or also curved cuts. This can, if necessary, reduce the amount of scrap.

Nachstehend wird ein Verfahren zum Vereinzeln von flexibel gewalztem Bandmaterial 3 zu Platinen 22 anhand von Figur 2 beschrieben. Das Verfahren kann hinsichtlich der Regelung der Komponenten zweigeteilt betrachtet werden. Denn, die von der Abwickel- und Richtgruppe 10 durchgeführten Verfahrensschritte S10 Abwickeln und S20 Richten können steuerungstechnisch, zumindest in Hinblick auf den Vorschub des Bandmaterials, von den hinter dem Bandspeichern S30 von der Vorschub- und Vereinzelungsgruppe 12 durchgeführten Verfahrensschritten (S40-S130) entkoppelt sein.A method for separating flexibly rolled strip material 3 into blanks 22 is described below with reference to FIG Figure 2 described. The process can be viewed in two parts with regard to the regulation of the components. This is because the process steps S10 unwinding and S20 straightening carried out by the unwinding and straightening group 10 can be decoupled from the process steps (S40-S130) carried out behind the belt store S30 by the advancing and separating group 12 in terms of control technology, at least with regard to the feed of the strip material be.

Erfindungsgemäß sind vorgesehen: gemäß Schritt S30 Zwischenspeichern des flexibel gewalzten Bandmaterials 3 mittels der Speichereinrichtung 9. Dabei ist insbesondere vorgesehen, dass das Bandmaterial 3 von der Abwickel- und Richtgruppe 10 fortlaufend in den Bandspeicher 9 zugeführt wird. Im Schritt S40 erfolgt ein Vorschieben des Bandmaterials 3 aus dem Zwischenspeicher 3 mittels der ersten und zweiten Vorschubeinrichtung 16, 17. Dies erfolgt insbesondere in Intervallen gemäß einer berechneten Vorschublänge für die jeweils aus dem Bandmaterial 3 auszuschneidende Platine 22. Zum Bestimmen der Vorschublänge erfolgt in den Schritten S50, S60 ein kontinuierliches Messen eines Dickensignals und eines Längensignals des Bandmaterials 3. Dies wird mittels der Dickenmesseinrichtung 14 und der ersten Längenmesseinrichtung 16 fortlaufend durchgeführt, das heißt während das Bandmaterial 3 von den Vorschubeinrichtungen 15, 17 um eine Vorschublänge weitergeführt wird. Die Dickenmessung (S50) erfolgt in Durchlaufrichtung R des Bandmaterials 3 vor der ersten Vorschubeinrichtung 15 beziehungsweise vor der ersten Längenmesseinrichtung 16. Die von den Messeinrichtungen 14, 16 erfassten Dicken- und Längenwerte werden an eine Rechen- beziehungsweise Steuereinheit weitergeleitet, wo sie zur Berechnung des Ist-Dickenprofils einer auszuschneidenden Platine 22 und zur Berechnung der Vorschublänge für diese Platine weiterverarbeitet werden. Zum Ermitteln des Dickenprofils des Bandes beziehungsweise der hieraus auszuschneidenden Platinen wird jeder Längenposition L des Bandmaterials 3 ein Dickenwert D zugeordnet. Da die Dickenmesseinrichtung 14 vor der ersten Vorschubeinrichtung 15 angeordnet ist, können die hiervon erfassten Dickenwerte und die hieraus zusammen mit den zugehörigen Längenwerten ermittelten Ist-Dickenprofile unmittelbar bei der aktuellen Vorschubbewegung berücksichtigt werden. Die Längenmessung kann in Durchlaufrichtung R des Bandes unmittelbar hinter der ersten Vorschubeinrichtung 15 erfolgen.According to the invention, the following are provided: according to step S30, intermediate storage of the flexibly rolled strip material 3 by means of the storage device 9. In particular, it is provided that the strip material 3 is continuously fed from the unwinding and straightening group 10 into the strip store 9. In step S40, the strip material 3 is advanced out of the intermediate store 3 by means of the first and second advance devices 16, 17. This takes place in particular at intervals according to a calculated advance length for the respective blank 22 to be cut out of the strip material 3. The advance length is determined in the Steps S50, S60 a continuous measurement of a thickness signal and a length signal of the strip material 3. This is carried out continuously by means of the thickness measuring device 14 and the first length measuring device 16, i.e. while the strip material 3 is being advanced by one feed length by the feed devices 15, 17. The thickness measurement (S50) takes place in the direction of passage R of the strip material 3 in front of the first feed device 15 or in front of the first length measuring device 16. The thickness and length values recorded by the measuring devices 14, 16 are forwarded to a computing or control unit, where they are processed further to calculate the actual thickness profile of a blank 22 to be cut out and to calculate the feed length for this blank. To determine the thickness profile of the strip or of the blanks to be cut out from it, a thickness value D is assigned to each length position L of the strip material 3. Since the thickness measuring device 14 is arranged in front of the first feed device 15, the thickness values recorded thereby and the actual thickness profiles determined from them together with the associated length values can be taken into account directly in the current feed movement. The length measurement can take place in the direction R of the belt, immediately behind the first feed device 15.

Das kontinuierliche Messen des Längen- beziehungsweise Wegsignals des Bandmaterials 3 mittels der ersten Längenmesseinrichtung 16 erfolgt zeitgleich mit der Dickenmessung während das Bandmaterial vorgeschoben wird. Es ist insbesondere vorgesehen, dass die erste Längenmesseinrichtung 16 am Startpunkt mit der Dickenmesseinrichtung 14 hinsichtlich der Länge referenziert wird. Dies erfolgt erstmalig, wie oben beschrieben, über Einstellung des definierten Abstandsmaßes A1, sowie während des Prozesses über kontinuierliche Meldung des Längenmesswertes von der ersten Längenmesseinrichtung 16 an die Dickenmesseinrichtung 14. Die Meldung der Längenmesswerte kann absolut oder inkrementell erfolgen, beispielsweise mittels Triggersignalen B1, B2. Die Dickenmessung skaliert die Dickenmesswerte anhand der gemeldeten Längenmesswerte über die Bandlänge. Auf diese Weise arbeiten beide Messgeräte 14, 16 vom exakt gleichen Bandlängen-Nullpunkt aus. Aus den gemessenen Dicken- und Längenmesswerten der Messeinrichtungen 14, 16 wird im Schritt S70 das Ist-Dickenprofils für die aus dem Bandmaterial 3 zu vereinzelnde Platine 22 berechnet. Das gemessene Ist-Dickenprofil kann mit dem vorgegebenen Solldickenprofil und den zugehörigen Toleranzen, insbesondere darstellbar durch eine Hüllkurve, im Schritt S80 zuverlässig verglichen und eine entsprechende Bewertung hinsichtlich der Teile, die in Ordnung sind, und solcher, die nicht in Ordnung sind vorgenommen werden. Gleichzeitig oder zeitlich versetzt hierzu kann im Schritt S90 die Vorschublänge für die aus dem Bandmaterial 3 zu vereinzelnde Platine 22 berechnet werden.The continuous measurement of the length or path signal of the strip material 3 by means of the first length measuring device 16 takes place simultaneously with the thickness measurement while the strip material is being advanced. In particular, it is provided that the first length measuring device 16 is referenced at the starting point with the thickness measuring device 14 in terms of length. This is done for the first time, as described above, by setting the defined distance A1, as well as during the process by continuously reporting the length measurement value from the first length measurement device 16 to the thickness measurement device 14. The length measurement values can be reported absolutely or incrementally, for example by means of trigger signals B1, B2 . The thickness measurement scales the thickness measurement values based on the reported length measurement values over the strip length. In this way, both measuring devices 14, 16 work from exactly the same strip length zero point. In step S70, the actual thickness profile for the blank 22 to be separated from the strip material 3 is calculated from the measured thickness and length measured values of the measuring devices 14, 16. The measured actual thickness profile can be reliably compared with the specified nominal thickness profile and the associated tolerances, in particular represented by an envelope curve, in step S80 and a corresponding assessment can be made with regard to the parts that are OK and those that are not. Simultaneously or offset in time, the feed length for the blank 22 to be separated from the strip material 3 can be calculated in step S90.

Im nachfolgenden Schritt S100 wird das Bandmaterial 3 zu der Vereinzelungseinrichtung 19 mittels der beiden Vorschubeinrichtungen 15, 17 auf Basis der berechneten Vorschublänge VL zugeführt. Während das Bandmaterial um die berechnete Vorschublänge VL für eine erste Platine vorgeschoben wird, erfolgt wiederum gleichzeitig die Dicken- und Längenmessung für die nachfolgend auszuschneidende nächste Platine 22' mittels der Dicken- und Längenmesseinrichtungen 14, 16 im Bereich der ersten Vorschubeinheit 15. Dies ist durch die gestrichelte Linie in Figur 2 dargestellt. Es ist vorgesehen, dass die Messstrecke zwischen der Dickenmessung 14 und der Vereinzelungseinrichtung 19 auf mindestens das Doppelte der Platinenlänge L22 einer aus dem Bandmaterial 3 auszuschneidenden Platine 22 plus dem Vorschubweg, den das Band während der Rechenzeit für die auszuschneidende Platine zurücklegt, eingestellt wird. Das Ausschneiden der Platine 22 erfolgt im Verfahrensschritt S110.In the subsequent step S100, the strip material 3 is fed to the separating device 19 by means of the two feed devices 15, 17 on the basis of the calculated feed length VL. While the strip material is advanced by the calculated feed length VL for a first blank, the thickness and length measurement for the next blank 22 'to be subsequently cut out is carried out simultaneously by means of the thickness and length measuring devices 14, 16 in the area of the first feed unit 15. This is done the dashed line in Figure 2 shown. It is provided that the measuring distance between the thickness measurement 14 and the separating device 19 is set to at least twice the blank length L22 of a blank 22 to be cut from the strip material 3 plus the feed path that the strip covers during the computing time for the blank to be cut. The circuit board 22 is cut out in method step S110.

Nach einem möglichen weiteren Schritt S120 kann während des Vorschubs des Bandmaterials 3 von der zweiten Vorschubeinrichtung 17 zur Trenneinheit 19 eine weitere Längenmessung mittels einer zweiten Längenmesseinrichtung 18 erfolgen. Die zweite Längenmesseinheit ist in Vorschubrichtung des Bandmaterials 3 vorzugsweise unmittelbar hinter der zweiten Vorschubeinrichtung 17 angeordnet. Es kann als weiterer Verfahrensschritt S130 ferner vorgesehen sein: Vergleichen der von der ersten Längenmesseinrichtung 16 ermittelten ersten Längenmesswerte mit den von der zweiten Längenmesseinrichtung 18 ermittelten zugehörigen zweiten Längenmesswerten und Abschalten der Anlage, wenn eine Differenz zwischen den ersten und zweiten Längenmesswerten einen vorgegebenen Differenzwert überschreitet. Durch diese Messredundanz wird das Risiko der Produktion von Ausschuss minimiert.After a possible further step S120, a further length measurement by means of a second length measuring device 18 can take place while the strip material 3 is being fed from the second feeding device 17 to the cutting unit 19. The second length measuring unit is preferably arranged directly behind the second feed device 17 in the feed direction of the strip material 3. The following method step S130 can also be provided: comparing the first length measurement values determined by the first length measurement device 16 with the associated second length measurement values determined by the second length measurement device 18 and switching off the system if a difference between the first and second length measurement values exceeds a predetermined difference value. This measurement redundancy minimizes the risk of rejects being produced.

In den Figuren 3, 4 und 5 sind verschiedene Formen von aus dem Bandmaterial 3 herzustellenden Platinen gezeigt, sowie in Figur 6 beispielhaft eine Trennabfolge für eine Platine gemäß Figur 3 beziehungsweise eine gemäß Figur 4.In the Figures 3, 4 and 5 various shapes of blanks to be produced from the strip material 3 are shown, as well as in FIG Figure 6 an example of a separation sequence for a board according to Figure 3 or one according to Figure 4 .

In Figur 3 ist eine Ausführungsform einer Rechteckplatine 22 mit einem unsymmetrischen Dickenverlauf D22 über der Länge L22 der Platine gezeigt. Die Platine 22 hat ausgehend vom ersten Ende 23 verschiedene Abschnitte 24a, 24b, 24c, 24d mit unterschiedlichen Dicken D24a, D24b, D24c, D24d, wobei der erste Abschnitt 24a und der letzte Abschnitt 24d am zweiten Ende 25 dieselbe Dicke (D24a = D24d) aufweisen. Zwischen jeweils zwei Abschnitten 24a, 24b, 24c, 24d gleichbleibender Dicke, die auch als Plateaus bezeichnet werden können, ist jeweils ein Übergangsabschnitt 26a, 26b, 26c mit variabler Dicke gebildet, die auch als Rampen bezeichnet werden können. Die in Figur 3 gezeigte Rechteckplatine 22 wird durch einfaches Ablängen des von den Vorschüben 15, 17 auf die korrekte Position gebrachten Bandmaterials 3 durch einen einfachen Schnitt, beispielsweise mittels einer Querteilschere, erzeugt. Eine beispielhafte Trennabfolge für die Rechteckplatine 22 aus Figur 3 ist im oberen Pfad der Figur 6 gezeigt. Aufeinander folgende Platinen haben dasselbe Bezugszeichen mit gestrichenen Indizes. Es sind eine "i.O."-Platine 22, nachgefolgt von einer "n.i.O."-Platine 28, nachgefolgt von einer "i.O."-Platine 22', einem kurzen herauszutrennenden "n.i.O"-Zwischenstück 28', nachgefolgt von einer weiteren "i.O."-Platine 22" dargestellt. Die "i.O."-Platinen 22, 22', 22" werden mittels einer Stapelanlage (nicht dargestellt) aufgestapelt. Die "n.i.O."-Abschnitte 28, 28' werden einer automatischen Verschrottung zugeführt. In der unteren Bildhälfte der Figur 6 ist eine weitere beispielhafte Trennabfolge für eine weitere beispielhafte Rechteckplatine dargestellt. Bei den Rechteckplatinen 22, 22', 22" der unteren Trennabfolge sind die Dicken des jeweils ersten Abschnitts 24a und des letzten Abschnitts 24a ebenfalls gleich. Der letzte Abschnitt 24a der Platine 22 hat entsprechend dieselbe Dicke wie der erste Abschnitt 24a' der nachfolgenden Platine 22'. Bei dem konkret gezeigten Beispiel folgt auf eine "n.i.O."-Platine 28 eine "i.O."-Platine 22, ein kurzes herauszutrennendes "n.i.O"-Zwischenstück 28', nachgefolgt von einer weiteren "i.O."-Platine 22', einer "n.i.O"-Platine 28" und einer "i.O."-Platine 22". Die "i.O."-Platinen 22, 22', 22" werden mittels einer Stapelanlage (nicht dargestellt) aufgestapelt. Die "n.i.O."-Abschnitte 28, 28' werden einer automatischen Verschrottung zugeführt.In Figure 3 shows an embodiment of a rectangular plate 22 with an asymmetrical thickness profile D22 over the length L22 of the plate. Starting from the first end 23, the board 22 has different sections 24a, 24b, 24c, 24d with different thicknesses D24a, D24b, D24c, D24d, the first section 24a and the last section 24d at the second end 25 having the same thickness (D24a = D24d) exhibit. Between two sections 24a, 24b, 24c, 24d of constant thickness, which can also be referred to as plateaus, a transition section 26a, 26b, 26c with variable thickness is formed, which can also be referred to as ramps. In the Figure 3 The rectangular blank 22 shown is produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by a simple cut, for example by means of a cross-cutting shears. An exemplary separation sequence for the rectangular plate 22 from Figure 3 is in the upper path of the Figure 6 shown. Successive boards have the same reference numerals with prime indices. There are an "OK" board 22, followed by an "NOK" board 28, followed by an "OK" board 22 ', a short "NOK" intermediate piece 28' to be separated, followed by a further "OK" - Board 22 "is shown. The" OK "boards 22, 22 ', 22" are stacked by means of a stacking system (not shown). The "not ok" sections 28, 28 'are automatically scrapped. In the lower half of the Figure 6 a further exemplary separation sequence for a further exemplary rectangular plate is shown. In the case of the rectangular plates 22, 22 ', 22 "of the lower separation sequence, the thicknesses of the respective first section 24a and the last section 24a are also the same. The last section 24a of the plate 22 accordingly has the same thickness as the first section 24a' of the subsequent plate 22 In the example shown specifically, an "NOK" board 28 is followed by an "OK" board 22, a short "NOK" intermediate piece 28 'to be removed, followed by a further "OK" board 22', a "NOK" “Board 28” and an “OK” board 22 ". The" OK "boards 22, 22 ', 22" are stacked by means of a stacking system (not shown). The "not ok" sections 28, 28 'are automatically scrapped.

In Figur 4 ist eine weitere Ausführungsform einer Rechteckplatine 22 gezeigt, die im Gegensatz zur Figur 3 einen symmetrischen Dickenverlauf D22 über der Länge L22 aufweist. Es ist erkennbar, dass der Dickenverlauf D22 der Platine 22 in Bezug auf eine Mittelebene E spiegelsymmetrisch gestaltet ist. Auch die vorliegend gezeigte Rechteckplatine 22 wird durch einfaches Ablängen des von den Vorschüben 15, 17 auf die korrekte Position gebrachten Bandmaterials 3 durch einen einfachen Schnitt, beispielsweise mittels einer Querteilschere, erzeugt.In Figure 4 a further embodiment of a rectangular plate 22 is shown, which in contrast to Figure 3 has a symmetrical thickness profile D22 over the length L22. It can be seen that the thickness profile D22 of the blank 22 is designed mirror-symmetrically with respect to a center plane E. The rectangular blank 22 shown in the present case is also produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by a simple cut, for example by means of cross-cutting shears.

In Figur 5 ist eine Ausführungsform von Platinen gezeigt, deren Endabschnitte jeweils eine unterschiedliche Dicke haben. Aus diesem Grund werden zwei aufeinander folgende Platinen 22A, 22B jeweils gespiegelt zueinander angeordnet. Über der Länge des Bandes wechseln sich jeweils eine erste Platine 22A und eine zweite Platine 22B ab. Dabei entspricht das Profil der ersten Platinen 22A dem Profil der zweiten Platinen 22B. Die vorliegend gezeigten Platinen 22A, 22B haben ferner in sich jeweils einen unsymmetrischen Dickenverlauf D22A, D22B über der jeweiligen Länge L22A, L22B. Es ist erkennbar, dass der Dickenverlauf D22A der Platine 22A in Bezug auf eine Mittelebene EAB spiegelsymmetrisch zum Dickenverlauf D22B der darauf folgenden Platine 22B ist. Die Platine 22A hat, ausgehend vom ersten Ende 23A, einen ersten Abschnitt 24Aa mit erster Dicke, einen zweiten Abschnitt 24Ab mit zweiter Dicke, einen dritten Abschnitt 24Ac mit dritter Dicke, einen vierten Abschnitt 24Ad mit vierter Dicke und einen letzten Abschnitt 24Ae mit einer Dicke, die ungleich der ersten Dicke des ersten Abschnittes 24Aa ist. Zwischen den Abschnitten 24Aa, 24Ab, 24Ac, 24Ad und 24Ae, die jeweils eine gleichbleibende Dicke über der Länge haben, sind jeweils Übergangsabschnitte 26Aa, 26Ab, 26Ac, 26Ad und 26Ae mit variabler Dicke über der Länge vorgesehen. Die zweite Platine 22B ist entsprechend symmetrisch zur ersten Platine aufgebaut. An die zweite Platine 22B schließt wiederum eine erste Platine 22A an, und so weiter. Auch die vorliegend gezeigten Rechteckplatinen 22A, 22B werden durch einfaches Ablängen des von den Vorschüben 15, 17 auf die korrekte Position gebrachten Bandmaterials 3 durch einen einfachen Schnitt, beispielsweise mittels einer Querteilschere, erzeugt.In Figure 5 an embodiment of circuit boards is shown, the end portions of which respectively have a different thickness. For this reason, two successive circuit boards 22A, 22B are each arranged in a mirrored manner. A first plate 22A and a second plate 22B alternate over the length of the strip. The profile of the first plates 22A corresponds to the profile of the second plates 22B. The blanks 22A, 22B shown here also each have an asymmetrical thickness profile D22A, D22B over the respective length L22A, L22B. It can be seen that the thickness profile D22A of the board 22A is mirror-symmetrical with respect to a center plane EAB to the thickness profile D22B of the board 22B following it. The board 22A has, starting from the first end 23A, a first section 24Aa with a first thickness, a second section 24Ab with a second thickness, a third section 24Ac with a third thickness, a fourth section 24Ad with a fourth thickness and a last section 24Ae with a thickness which is not equal to the first thickness of the first section 24Aa. Between the sections 24Aa, 24Ab, 24Ac, 24Ad and 24Ae, each of which has a constant thickness over the length, transition sections 26Aa, 26Ab, 26Ac, 26Ad and 26Ae are provided with variable thickness over the length. The second circuit board 22B is constructed symmetrically to the first circuit board. The second circuit board 22B is in turn followed by a first circuit board 22A, and so on. The rectangular plates 22A, 22B shown here are also produced by simply cutting to length the strip material 3 brought to the correct position by the feeders 15, 17 by means of a simple cut, for example by means of cross-cutting shears.

Figur 7 zeigt eine erfindungsgemäße Anlage 2 zum Vereinzeln von flexibel gewalztem Bandmaterial in einer abgewandelten Ausführungsform. Diese entspricht weitestgehend der Ausführungsform gemäß Figur 1, so dass hinsichtlich der Gemeinsamkeiten auf die obige Beschreibung Bezug genommen wird. Dabei sind gleiche beziehungsweise abgewandelte Bauteile mit gleichen Bezugszeichen versehen, wie in Figur 1. Die vorliegende Anlage 2 gemäß Figur 7 kann mit demselben oben im Zusammenhang mit Figur 2 beschriebenen Verfahren betrieben werden. Figure 7 shows a system 2 according to the invention for separating flexibly rolled strip material in a modified embodiment. This largely corresponds to the embodiment according to Figure 1 , so that reference is made to the above description with regard to the similarities. The same or modified components are provided with the same reference symbols as in FIG Figure 1 . This Annex 2 in accordance with Figure 7 can be related to the same above Figure 2 are operated.

Der einzige Unterschied der vorliegenden Ausführungsform besteht in der Ausgestaltung der Vereinzelungseinrichtung 19, die vorliegend ein Formschnittwerkzeug, insbesondere mit Bandtrennwerkzeug umfasst. Das Formschnittwerkzeug ist so gestaltet, dass es eine der Zielkontur entsprechende Formschnittplatine 22 aus dem Bandmaterial 3 ausschneidet. Es können je nach herzustellendem Bauteil, ein oder mehr Formschnittplatinen 22 in einem Arbeitsgang des Formschnittwerkzeugs aus dem Bandmaterial 3 ausgeschnitten werden. Die Vereinzelungseinrichtung 19 kann als Stanzwerkzeug gestaltet sein, wie genauer in Figur 9 gezeigt, mit einem Werkzeugunterteil 29 und einem Werkzeugoberteil 30, das relativ hierzu bewegbar ist, um einen konturierten Schnitt durchzuführen. Zusätzlich kann die Vereinzelungseinrichtung ein integriertes Bandtrennwerkzeug aufweisen, das eine Platine vom Band abtrennt. Dabei kann die Schnittreihenfolge nach Bedarf beliebig gewählt werden, das heißt erst Trennschnitt einer Platine vom Band, dann Formschnitt aus der Platine, oder Trennschnitt und Formschnitt zeitgleich, oder erst Formschnitt aus dem Band und dann Trennschnitt vom Band. Analog zur Ausführung mit Querteilschere ist auch bei der vorliegenden Ausführungsform mit Formschnittwerkzeug eine genaue Positionierung des auszuschneidenden Formschnitts 22 relativ zum Werkzeug 19 mittels der Vorschubeinheiten 15, 17 vorgesehen. Das Trennwerkzeug kann eine von einer Senkrechten zur Bandkante abweichende Schnittlinie haben, die gerade, schräg oder auch gekrümmt sein kann. Je nach Form der auszuschneidenden Formschnittplatinen lässt sich mit schrägen oder gekrümmten Schnittlinien gegebenenfalls der Stanzschrott reduzieren.The only difference of the present embodiment consists in the design of the separating device 19, which in the present case comprises a shaped cutting tool, in particular with a band cutting tool. The shape cutting tool is designed so that it cuts a shaped blanking plate 22 corresponding to the target contour from the strip material 3. Depending on the component to be produced, one or more shaped cutting blanks 22 can be cut out of the strip material 3 in one operation of the shaped cutting tool. The separating device 19 can be designed as a punching tool, as shown in more detail in FIG Figure 9 shown, with a lower tool part 29 and an upper tool part 30 which is movable relative thereto in order to carry out a contoured cut. In addition, the separating device can have an integrated strip cutting tool which separates a plate from the strip. The sequence of cuts can be chosen as required, i.e. first a separating cut of a blank from the strip, then a shaped cut from the blank, or a separating cut and shaped cut at the same time, or first a shaped cut from the strip and then a separating cut from the strip. Analogous to the embodiment with cut-to-length shears, precise positioning of the shaped cut 22 to be cut out relative to the tool 19 by means of the feed units 15, 17 is also provided in the present embodiment with a shaped cutting tool. The cutting tool can have a cutting line which deviates from a perpendicular to the strip edge and which can be straight, inclined or also curved. Depending on the shape of the shaped blanks to be cut out, the punching scrap can be reduced with inclined or curved cutting lines.

Die Vorschubeinheiten 15, 17 sind regelungstechnisch mit dem Formschnittwerkzeug 19 so verbunden, dass das Bandmaterial in der gewünschten Länge bis zu einem Referenzpunkt 32 beziehungsweise einer Referenzebene am dem Formschnittwerkzeug 19 vorgeschoben wird. Es ist insbesondere vorgesehen, dass das Formschnittwerkzeug 19 gegenüber dem Pressentisch 31 exakt ausgerichtet wird und mittels Positioniermitteln, wie beispielsweise Passbolzen oder Passkegel, genau positioniert beziehungsweise fixiert wird.The feed units 15, 17 are connected in terms of control technology to the shape cutting tool 19 in such a way that the strip material is advanced in the desired length to a reference point 32 or a reference plane on the shape cutting tool 19. In particular, it is provided that the shape cutting tool 19 is precisely aligned with respect to the press table 31 and is precisely positioned or fixed by means of positioning means such as fitting bolts or fitting cones.

In Figur 8 ist eine Formschnittplatine 22 gezeigt, wie sie beispielsweise mittels des Stanzwerkzeugs 19 gemäß der Anlage aus Figur 7 ausgeschnitten werden kann. Die Formschnittplatine 22 ist dadurch gekennzeichnet, dass sie eine definierte Umfangskontur 27 aufweist. Die Kontur der aus dem Bandmaterial 3 auszuschneidenden Blechplatinen 22 ist beliebig und kann entsprechend den geometrischen Vorgaben individuell eingestellt werden. Zur Herstellung einer Formschnittplatine 22 eignet sich alternativ zum beschriebenen Stanzwerkzeug insbesondere auch eine Strahlschneidvorrichtung, beispielsweise einer Laserstrahltrennvorrichtung, die entlang mehrerer Achsen, nämlich zumindest in Vorschubrichtung und in Querrichtung und gegebenenfalls in Hochrichtung des Bandmaterials bewegt werden kann. Die Formschnittplatine 22 hat Abschnitte 24a, 24b, 24c, 24d mit unterschiedlichen Dicken (Plateaus) sowie dazwischen liegenden Übergangsabschnitten 26a, 26b, 26c (Rampen). In Figur 8 ist die Referenzkante 32 eingezeichnet, auf welche das Bandmaterial 3 in der Vereinzelungseinrichtung 19 positioniert wird, um den Formschnitt zu erzeugen.In Figure 8 a shaped blanking plate 22 is shown, as it is shown, for example, by means of the punch 19 according to the system Figure 7 can be cut out. The shaped blank 22 is characterized in that it has a defined circumferential contour 27. The contour of the sheet metal blanks 22 to be cut out of the strip material 3 is arbitrary and can be set individually according to the geometric specifications. Alternatively, it is suitable for producing a shaped blank 22 for the punching tool described in particular also a beam cutting device, for example a laser beam cutting device, which can be moved along several axes, namely at least in the feed direction and in the transverse direction and optionally in the vertical direction of the strip material. The die cut blank 22 has sections 24a, 24b, 24c, 24d with different thicknesses (plateaus) and intermediate transition sections 26a, 26b, 26c (ramps). In Figure 8 the reference edge 32 is shown on which the strip material 3 is positioned in the separating device 19 in order to produce the shaped cut.

Figur 9 zeigt eine beispielhafte Trennabfolge für eine Formschnittplatine 22 aus Figur 8 mittels des Formschnittwerkzeugs 19, das vorliegend gestrichelt dargestellt ist. Vom Formschnittwerkzeug 19 sind das untere Werkzeugteil 29, das auf dem Pressentisch 31 positioniert ist, und das obere Werkzeugteil 30 erkennbar. Für den Schneidprozess wird das Band 3 gemäß Berechnung der Vorschubeinheit 15, 17 auf eine Referenz-Trennkante 32 vorgeschoben. Dann wird die Formschnittplatine 22 durch Bewegen des Oberteils 30 zum Unterteil 29 ausgeschnitten. Die konkret gezeigte beispielhafte Abfolge umfasst eine "i.O."-Formschnittplatine 22, nachgefolgt von einem auszuschneidenden "i.O."-Platinenbereich 22', nachgefolgt von zwei "n.i.O."-Platinenbereichen 28, 28', einem weiteren "i.O."-Platinenbereich 22", ein weiterer "n.i.O"-Platinenbereich 28" und einem weiteren "i.O."-Platinenbereich 22'". Die "i.O."-Platinen 22, 22', 22", 22'" werden mittels einer Stapelanlage (nicht dargestellt) aufgestapelt. Die "n.i.O."-Abschnitte 28, 28' werden einer automatischen Verschrottung zugeführt. Figure 9 FIG. 11 shows an exemplary separation sequence for a die cut blank 22 from FIG Figure 8 by means of the shape cutting tool 19, which is shown in dashed lines here. Of the die cutting tool 19, the lower tool part 29, which is positioned on the press table 31, and the upper tool part 30 can be seen. For the cutting process, the tape 3 is advanced onto a reference separating edge 32 according to the calculation of the advance unit 15, 17. Then the die cut blank 22 is cut out by moving the upper part 30 towards the lower part 29. The specifically shown exemplary sequence comprises an “OK” die-cut board 22, followed by an "OK" board area 22 'to be cut out, followed by two "OK" board areas 28, 28', and a further "OK" board area 22 " further "NOK" board area 28 "and a further" OK "board area 22 '". The "OK" boards 22, 22', 22 ", 22 '" are stacked by means of a stacking system (not shown) "-Sections 28, 28 'are automatically scrapped.

Mit den vorstehend beschriebenen Anlagen beziehungsweise Verfahren ist es möglich, Coils 4 mit flexibel gewalzten Bandmaterial 3 abzuwickeln, zu richten, die enthaltenen Blechdickenverläufe auf Konformität mit der Blechdickentoleranz zu prüfen und eine i.O./n.i.O Bewertung vorzunehmen. Hierdurch wird das Band 3 in Vorschublängen aufgeteilt, welche lagegenau unter der Trennkante der Trenneinrichtung 19 positioniert werden. Anschließend trennt die Trenneinrichtung 19 die Vorschublängen vom Band ab. Im Fall das es sich um eine Vorschublänge handelt, die "in Ordnung" (i.O.) ist, wird die Rechteck- oder Formschnittplatine der weiteren Verarbeitung zugeführt. Im Fall, dass es sich um eine Vorschublänge handelt, die "nicht in Ordnung" (n.i.O.) ist, wird diese aussortiert und verschrottet.With the systems or methods described above, it is possible to unwind and align coils 4 with flexibly rolled strip material 3, to check the sheet thickness profiles contained therein for conformity with the sheet thickness tolerance and to carry out an OK / NOK assessment. As a result, the tape 3 is divided into feed lengths, which are precisely positioned below the separating edge of the separating device 19. The separating device 19 then separates the feed lengths from the tape. In the event that the feed length is "OK" (OK), the rectangular or shaped blank is sent for further processing. In the event that the feed length is "not OK" (not ok), it is sorted out and scrapped.

BezugszeichenlisteList of reference symbols

22
Anlageinvestment
33
BandmaterialTape material
44th
CoilCoil
55
Haspelreel
66
RichteinheitStraightening unit
77th
EinlauftreiberInlet driver
88th
AbzugswalzeTake-off roller
99
SpeichereinrichtungStorage facility
1010
Abwickel- und RichtgruppeUnwinding and straightening group
1212th
VereinzelungsgruppeSingling group
1313
FüllstandsgeberLevel sensor
1414th
DickenmesseinrichtungThickness measuring device
1515th
erste Vorschubeinrichtungfirst feed device
1616
erste Längenmesseinrichtungfirst length measuring device
1717th
zweite Vorschubeinrichtungsecond feed device
1818th
zweite Längenmesseinrichtungsecond length measuring device
1919th
VereinzelungseinrichtungSeparating device
20,20'20.20 '
MessradMeasuring wheel
21,21'21.21 '
StützradSupport wheel
2222nd
Platinecircuit board
2323
EndeThe End
2424
AbschnittenSections
2525th
EndeThe End
2626th
ÜbergangsabschnittTransition section
2727
UmfangskonturPerimeter contour
2828
n.i.O-BereichNOK area
2929
WerkzeugunterteilTool base
3030th
WerkzeugoberteilTool head
3131
PressentischPress table
3232
ReferenzkanteReference edge
AA.
Abstanddistance
BB.
TriggersignalTrigger signal
DD.
Dickethickness
EE.
Ebenelevel
LL.
Längelength
MM.
DrehmomentTorque
PP
Profilprofile
RR.
Richtungdirection
SS.
Schrittstep
VLVL
VorschublängeFeed length

Claims (15)

  1. Installation for separating flexibly rolled strip material, comprising:
    a buffer device (9) for temporarily buffering the flexibly rolled strip material (3);
    a first feed device (15) which is arranged in feed direction (R) of the strip material (3) downstream the buffer device (9);
    at least one length measuring device (16) for continuously measuring a length (L3) of the strip material (3);
    a thickness measuring device (14) for continuously measuring a thickness (D3) of the strip material (3) along the length (L3);
    a second feed device (17) arranged downstream the first feed device (15);
    a separating device (19) which is arranged in the feed direction (R) of the strip material (3) downstream the second feed device (17);
    wherein the first feed device (15) and the second feed device (17) are configured to move the strip material (3) depending on the thickness measurement and the length measurement from the buffer device (9) to the separating device (19);
    characterized in
    that the thickness measuring device (14) is arranged in the feed direction of the strip material (3) between the buffer device (9) and the first feed device (15); and
    that the at least one length measuring device (16) is arranged in the feed direction of the strip material (3) downstream the first feed device (15).
  2. Installation according to claim 1,
    characterized in
    that a coiler (5) for uncoiling the flexibly rolled strip material (3) and a straightening unit (6) for straightening the flexibly rolled strip material (3) are provided, which are arranged upstream of the buffer device (9), wherein the first feed device (15) and the second feed device (17) for the separating device (19) are controlled independent of a feed of the coiler (5) and the straightening unit (6).
  3. Installation according to claim 1 or 2,
    characterized in
    that the at least one length measuring device (16, 18) comprises a measuring wheel (20, 20') which is in contact with a first side of the strip material (3), and a support wheel (21, 21') which is in contact with an opposite side of the strip material (3) as a counter-bearing for the measuring wheel (20, 20'), wherein the running surface of the measuring wheel is made in particular from a steel material.
  4. Installation according to any one of claims 1 to 3,
    characterized in
    that the at least one length measuring device (16, 18) is a first length measuring device (16) for measuring the length of the strip material, and
    that a second length measuring device (18) is provided for measuring the length of the strip material (3), wherein the second length measuring device (18) is arranged in the feed direction of the strip material between the second feed device (17) and the separating device (19).
  5. Installation according to claim 4,
    characterized in
    that the first length measuring device (16) has a first distance to the first feed device (15) which is smaller than 0.5 times the distance between the first feed device (15) and the second feed device (17), and/or
    that the second length measuring device (18) has a second distance to the second feed device (17) which is smaller than 0.5 times the distance between the second feed device (17) and the separating device (19).
  6. Installation according to any one of claims 1 to 5,
    characterized in
    that the second feed device (17) is faster drivable than the first feed device (15), so that the strip material (3) can be tension loaded between the first feed device (15) and the second feed device (17).
  7. Installation according to any one of claims 1 to 6,
    characterized in
    that the distance (A2) between the thickness measuring device (14) and the separating device (19) is at least twice the blank length (L22) of a blank (22) to be cut out of the strip material, in particular at least twice the blank length plus the feed path which the strip material (3) covers during the computing time for the blank to be cut out.
  8. Installation according to any one of claims 1 to 7,
    characterized in
    that the at least one length measuring device (16) and the thickness measuring device (14) are measuring-technically coupled to one another, wherein it is provided in particular that the length measuring device (16) generates trigger signals and transmits them to the thickness measuring device (14), wherein the trigger signals serve as triggers for carrying out thickness measurements.
  9. Installation according to any one of claims 1 to 8,
    characterized in
    that the separating device (19) comprises a cross-cutting shear or a beam cutting unit, in particular a laser cutting unit.
  10. Method for separating flexibly rolled strip material, in particular by an installation according to any one of claims 1 to 9, comprising:
    intermediate buffering (S30) the flexibly rolled strip material (3) by a buffer device (9);
    advancing (S40) the strip material from the buffer device (9) by a first feed device (15) and a second feed device (17);
    continuous measuring (S50) a thickness (D3) of the strip material (3) by a thickness measuring device (14) while the strip material (3) is being fed forward, wherein the measuring (S50) of the thickness (D3) takes place in the feed direction of the strip material upstream of the first feed device (15);
    continuous measuring (S60) a length (L3) of the strip material (3) by a length measuring device (16) while the strip material (3) is being fed forward, the length (L3) being measured in the feed direction of the strip material behind the first feed device (15);
    calculating (S70) an actual thickness profile (P22) for a blank (22) to be separated from the strip material from measured thickness values and associated measured length values;
    comparing (S80) the calculated actual thickness profile (P22) with a predetermined nominal thickness profile and calculating a feed length (VL22) for the blank (22) to be separated from the strip material;
    feeding (S100) the strip material (3) to a separating device (19) by the first feed device (15) and the second feed device (17) on the basis of the calculated feed length (VL22).
  11. Method according to claim 10,
    characterized in
    that a further method step is provided:
    continuous measuring (S120) of the length (L3) of the strip material (3) by a second length measuring device (18) during the feeding of the strip material to the separating device (19), wherein the measuring takes place by the second length measuring device (18) in the feed direction (R) of the strip material behind the second feed device (17),
    wherein a further method step is provided in particular:
    comparing (S130) the first length measured values determined by the first length measuring device (16) with the associated second length measured values determined by the second length measuring device (18); and switching off the installation if a difference between the first length measured values and the second length measured values exceeds a specified difference value.
  12. Method according to claim 10 or 11,
    characterized in
    that the first length measuring device (16) is referenced at the starting point with the thickness measuring device (14) with respect to the length, wherein it is provided in particular that the length measuring device (16) generates trigger signals and transmits them to the thickness measuring device (14), wherein the trigger signals serve as triggers for carrying out thickness measurements by the thickness measuring device (14).
  13. Method according to any one of claims 10 to 12,
    characterized in
    that the first feed device (15) and the second feed device (17) are operated synchronously, in particular with the same length scale.
  14. Method according to any of Claims 10 to 13,
    characterized in
    that the first feed device (15) and the second feed device (17) are controlled such that the second feed device (17) runs slightly faster relative to the first feed device (15), so that the strip material (3) is subjected to a slight tensile load.
  15. Method according to any one of claims 10 to 14,
    characterized in
    that a fixed first distance (A1) is set between the thickness measuring device (14) and the first feed device (15), and/or
    that a fixed second distance (A2) is set between the thickness measuring device (14) and the separating device (19),
    wherein the first distance (A1) and/or the second distance (A2) are measured with an accuracy of in particular up to +/- 0.2 mm.
EP18171364.5A 2018-05-08 2018-05-08 Installation and method for separating flexible rolled strip material Active EP3566788B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL18171364T PL3566788T3 (en) 2018-05-08 2018-05-08 Installation and method for separating flexible rolled strip material
EP18171364.5A EP3566788B1 (en) 2018-05-08 2018-05-08 Installation and method for separating flexible rolled strip material
PCT/EP2019/061408 WO2019215044A1 (en) 2018-05-08 2019-05-03 System and method for separating flexibly rolled strip material
US17/053,433 US20210245216A1 (en) 2018-05-08 2019-05-03 Separating flexibly rolled strip material
CN201980031002.8A CN112088052B (en) 2018-05-08 2019-05-03 System and method for separating flexibly rolled strip material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18171364.5A EP3566788B1 (en) 2018-05-08 2018-05-08 Installation and method for separating flexible rolled strip material

Publications (2)

Publication Number Publication Date
EP3566788A1 EP3566788A1 (en) 2019-11-13
EP3566788B1 true EP3566788B1 (en) 2021-02-17

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EP18171364.5A Active EP3566788B1 (en) 2018-05-08 2018-05-08 Installation and method for separating flexible rolled strip material

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US (1) US20210245216A1 (en)
EP (1) EP3566788B1 (en)
CN (1) CN112088052B (en)
PL (1) PL3566788T3 (en)
WO (1) WO2019215044A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019132133A1 (en) * 2019-11-27 2021-05-27 Muhr Und Bender Kg PLANT AND PROCESS FOR FLEXIBLE ROLLING OF METALLIC STRIP MATERIAL
DE102022127171A1 (en) * 2022-10-18 2024-04-18 TRUMPF Werkzeugmaschinen SE + Co. KG Mechanical arrangement and method for processing a sheet metal strip unwound from a coil

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US5590556A (en) * 1993-02-11 1997-01-07 Fourie; Eugene Apparatus for the manufacture of a thin metallic strip
US5875672A (en) * 1993-02-11 1999-03-02 Fourie; Eugene Method and apparatus for manufacturing metallic support beams for windscreen wiper blade assemblies
MXPA03000211A (en) * 2000-07-06 2004-10-29 Trico Products Corp Method and apparatus for flexible manufacturing a discrete curved product from feed stock.
CN101602065B (en) * 2009-07-07 2011-04-27 东北大学 Micro-tracking method and system of rolled pieces in the process of rolling periodic variable-thickness strips
GB2504269B (en) * 2012-07-23 2014-09-03 Siemens Plc Method of rolling metal plate
CN104338752B (en) * 2013-07-24 2016-08-10 宝山钢铁股份有限公司 A kind of length control method during Varying-thickness rolling
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CN106270718B (en) * 2015-05-20 2018-07-06 宝山钢铁股份有限公司 The equipment of cold rolling Varying Thickness Plates automatic shearing and the cutting method based on the equipment
CN106555144B (en) * 2015-09-30 2018-08-31 宝山钢铁股份有限公司 The hot galvanized layer thickness control system and method for continuous variable thickness band
PL3181248T3 (en) 2015-12-18 2018-06-29 Muhr Und Bender Kg Method and installation for the production of a sheet metal plate
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Also Published As

Publication number Publication date
PL3566788T3 (en) 2021-08-16
WO2019215044A1 (en) 2019-11-14
EP3566788A1 (en) 2019-11-13
CN112088052A (en) 2020-12-15
CN112088052B (en) 2023-03-10
US20210245216A1 (en) 2021-08-12

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