[go: up one dir, main page]

US20210205872A1 - Producing a product made of a flexibly rolled strip material - Google Patents

Producing a product made of a flexibly rolled strip material Download PDF

Info

Publication number
US20210205872A1
US20210205872A1 US17/057,734 US201917057734A US2021205872A1 US 20210205872 A1 US20210205872 A1 US 20210205872A1 US 201917057734 A US201917057734 A US 201917057734A US 2021205872 A1 US2021205872 A1 US 2021205872A1
Authority
US
United States
Prior art keywords
strip material
thickness
length
blank
thickness profile
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.)
Abandoned
Application number
US17/057,734
Other languages
English (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
Original Assignee
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.)
Filing date
Publication date
Application filed by Muhr und Bender KG filed Critical Muhr und Bender KG
Assigned to MUHR UND BENDER KG reassignment MUHR UND BENDER KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EICK, Alexander, BRÜSER, Christian, BARCHET, Andreas, Ivo, Joachim, DAHL, THOMAS
Publication of US20210205872A1 publication Critical patent/US20210205872A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • 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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material

Definitions

  • a device and a method for separating flexibly rolled strip material are known.
  • the strip material is fed from a coiler via a first clamping roller and a strip straightening device into a strip buffer. Behind the strip buffer there are two further clamping rollers with integrated length measurement, between them a strip thickness measurement, and behind them a hydraulic shear for separating the strip material.
  • a process and an apparatus for producing a sheet metal blank are known.
  • the process comprises the steps: flexible rolling of a strip material, wherein a thickness profile with different sheet thicknesses is generated over the length of the strip material; determining a measured thickness profile of several successive regions of the strip material; calculating a desired position in the strip material for a sheet blank to be cut out of the strip material depending on the generated measured thickness profile of at least two successive regions of the strip material; cutting the flexibly rolled strip material by means of at least one cutting device along the desired position to produce the sheet blank.
  • shape-cut or rectangular blanks from flexibly rolled metal strip also known as tailor rolled shapes or tailor rolled blanks
  • a suitable cutting device Depending on the length and thickness profile of the blanks to be produced, efficient production is difficult.
  • components of variable sheet thickness with end sections of varying thickness in this case also referred to as A-B rolling
  • A-B rolling cannot be produced or can only be produced with considerable scrap.
  • the scrap is caused by the fact that a transition ramp has to be rolled into the strip material between the end thickness of a first blank and the beginning thickness of the following blank, which forms a scrap.
  • the present disclosure relates to a process and an apparatus for manufacturing a product from 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 region in order to obtain blanks with a defined nominal thickness profile.
  • the present process and an apparatus for producing products from flexibly rolled strip material enables an efficient production of blanks with high manufacturing accuracy even if the thickness profiles in the strip material are not uniform.
  • a corresponding apparatus which enables fast and cost-efficient processing with high manufacturing accuracy can produce products from flexibly rolled strip material.
  • a method of producing a product from flexibly rolled strip material comprises: providing a flexibly rolled metallic strip material having a thickness profile with a variable thickness along the length of the strip material; determining a measured thickness profile of the strip material along the length of the strip material; and calculating a desired cutting position for a blank to be produced from the strip material depending on the determined measured thickness profile of the strip material and an associated desired thickness profile of the blank to be cut therefrom; cutting off a blank from the strip material along the desired cutting position; rotating the blank depending on the determined measured thickness profile such that the blank is positioned with its thickness profile in a defined processing position which differs from the cutting position; and processing the blank in the processing position by means of a processing unit, the blank being processed into a product.
  • This method allows blanks with variable thickness profile (Tailor Rolled Blanks), which have different sheet thicknesses at the opposite ends, and/or those with an asymmetrical sheet thickness profile, or products made therefrom, to be produced efficiently and with high manufacturing accuracy.
  • the blanks are correctly positioned before entering the contour cutting tool so that the sheet thickness profile always matches the shape and/or cutting contour in the tool.
  • the correctly aligned raw blanks are indexed into the following tool where they are further processed into shaped cuts. Because the blanks, which have a greater length than width in the rolling direction, are rotated before further processing, the feed lengths of the blanks into the tool and during transport through the tool are shortened, so that shorter cycle times are achieved.
  • the raw blanks are further processed into a product in the following processing unit.
  • the term product shall include any intermediate or end product that starting from the blank has undergone a shape-changing further processing. These may be shape cut parts, for example, if the further processing includes pure shape cutting, or formed parts, if the further processing includes a forming process, or combinations thereof, if the further processing includes shape cutting and forming.
  • Separation is performed in particular in such a way that blanks with a length of less than 2500 mm (millimetres), in particular less than 2000 mm, are separated from the strip material.
  • blanks with a length of more than 400 mm, in particular more than 600 mm can be separated from the strip material.
  • the raw blanks can be separated from the strip material in such a way that a longest length of the raw blank in the feed direction of the strip is greater than the width of the strip material. It is to be understood that, depending on the technical requirements of the finished product and/or for tooling reasons, raw blanks can also be cut off whose length in the desired cutting position, i.e.
  • the desired cutting position is understood to be the position to which the strip is advanced and positioned in accordance with the measured thickness profile in order to cut off the respective blank.
  • the position and/or orientation of the blank after cutting and before rotating is also called the cut-off position.
  • the strip material can have alternating strip regions with different or equal, symmetrical or asymmetrical strip thickness profiles over the length.
  • the strip material can have a first strip region with a first thickness profile and an adjoining second strip region with a second thickness profile over the length, with the first and second thickness profiles differing from one another in the strip material, wherein a first blank is separated from the strip material from the first strip region and a second blank is separated from the strip material from the second strip region, wherein the first blank and the second blank are rotated in such a way that the first thickness profile and the second thickness profile are aligned in the same way in the processing position.
  • the first thickness profile in the strip can be mirror-symmetrical to the second thickness profile with respect to a parting plane lying between the two strip regions. In the strip, the two thickness profiles are different over the length, i.e.
  • the two blanks with their respective thickness profiles are aligned identically and can be fed to the tool for further processing.
  • the first blank can be rotated in a first direction of rotation depending on the measuring thickness profile and the second blank in an opposite second direction of rotation depending on the measuring thickness profile. This also applies to each subsequent first and second blank.
  • the successive strip regions and the blanks to be produced therefrom can also have front and end sections of equal thickness, but with an asymmetrical sheet thickness profile with respect to a feed length center.
  • the blanks are rotated with respect to the thickness profile so that they have the same orientation before entering the processing tool and in the tool, respectively.
  • blanks with a symmetrical thickness profile can also be processed.
  • the blanks can always be rotated in the same direction.
  • the blank starting from the initial position after having been cut off from the strip is rotated by 80° to 100°, in particular 90°.
  • the rotation takes place in the first or opposite second direction of rotation around a vertical axis of the blank, depending on the thickness profile.
  • the processing device may comprise, for example, one or more stamping tools and/or one or more beam cutting tools and/or one or more forming tools or combinations thereof.
  • the method may further comprise feeding the strip material from a buffer device by means of a feeding device, in particular by a first feeding unit and a second feeding unit.
  • the measuring thickness profile can be determined, for example, during the strip feed by continuously measuring the thickness of the strip material by a thickness measuring unit and continuously measuring the length of the strip material by a length measuring device.
  • the thickness is preferably measured in the feed direction of the strip material before the first feed unit, and the length is measured in the feed direction of the strip material behind the first feed unit.
  • a feed length for the blank to be separated from the strip material can be determined.
  • the strip material is then fed to the separating device by means of the first and second feed unit on the basis of the calculated feed length.
  • the strip material can be pulled out of the strip buffer by the position-controlled feeding device.
  • the flexible rolled strip can be continuously measured by the thickness measuring unit with regard to its thickness.
  • the thickness measuring unit evaluates on the basis of the measured thickness, under consideration of the associated length measurement values, whether or not the flexible rolled strip meets the required thickness tolerances.
  • the comparison of the determined actual thickness profile with the specified desired thickness profile is carried out in particular also under consideration of the associated tolerances of the desired thickness profile, which can be represented by an envelope profile. In this case, it is verified by calculation whether the determined actual profile lies within the envelope profile of the desired profile. From the result of the comparison the feed length for the strip or the blank to be separated can be calculated.
  • the strip is divided into regions that are OK (so-called OK parts) and those that are not OK (so-called not OK parts).
  • the position and length of these individual regions in the strip is passed on from the thickness measuring unit to the first feed unit.
  • the first feed unit, and the second feed unit 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 accurately to the separation point of the separating device.
  • the feed unit can then transmit the information to the other apparatus components as to whether the feed length is a feed length with an OK thickness profile or a not OK thickness profile.
  • the first length measuring device of the first feed is referenced at the starting point with the thickness measurement with regard to length. This can be done by continuous transmitting the measured length value from the first length measuring device to the thickness measuring device. Transmitting the length measuring values can be effected absolute or incremental.
  • the thickness measurement scales the thickness measurement values based on the transmitted length measurement values over the strip length. In this way both measuring devices can work from exactly the same strip length zero point.
  • the length measuring device can generate trigger signals and pass them on to the thickness measuring device, wherein the trigger signals serve as triggers for carrying out thickness measurements of the thickness measuring device.
  • a fixed distance can be set between the thickness measuring unit and the first feed unit. This distance is measured precisely, preferably with an accuracy of up to +/ ⁇ 0.2 mm, and is maintained during operation of the line. In this way, the length reference between the thickness measurement on the one hand and the feed respectively length measurement on the other hand can be reliably ensured 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 embodiment. This distance is measured precisely, preferably with an accuracy of up to +/ ⁇ 0.2 mm, and maintained during operation of the apparatus.
  • the second feed unit is operated synchronously with the first feed unit, in particular with the same length scale as the first feed unit and the thickness measuring unit.
  • the second feed unit By controlling the second feed unit such that it moves slightly ahead of the first feed unit, the second feed unit produces a slight strip tension in the strip portion that is within the measuring section, which ensures a smooth strip run.
  • an apparatus for producing a product from flexibly rolled metallic strip material comprising: a feeding device for feeding flexibly rolled metallic strip material, which has a thickness profile with different sheet thicknesses over the length of the strip material, wherein successive regions of the flexibly rolled strip material each correspond to an associated desired thickness profile of a shaped blank to be produced therefrom; a measuring device for determining the thickness of the strip material over the length of the strip material; a separating device for producing individual blanks from the flexibly rolled strip material, wherein the separating device has a distance from a part of the measuring device which amounts to at least twice the distance of a blank to be cut off; a rotating device for rotating a separated blank into a desired processing position, the rotating device being controllable by an electronic control unit in order to rotate a separated blank into the desired processing position depending on the determined measuring thickness profile of the blank; a processing device which is designed to produce a product, in particular a shaped cut part, from the blank in the processing
  • the device enables blanks with a variable thickness profile (Tailor Rolled Blanks), which have different sheet thicknesses at the opposite ends and/or those with an asymmetrical sheet thickness profile, to be produced efficiently and with high production accuracy. It is to be understood that all method-related features are analogously applicable to the apparatus, and vice versa, all apparatus-related features are applicable to the method.
  • the electronic control unit can be configured to determine a first rotary motion from a first strip region with a first thickness profile, and a second rotary motion from a second strip region with a second thickness profile, which deviates from the first rotary motion.
  • the control unit can derive on the basis of the determined measured thickness profile of the metal strip, respectively the thickness profile of the blank separated therefrom, how the blank is to be aligned relative to the subsequent tool to be further processed to the desired product.
  • the processing device may include one or more cutting groups that cut the shaped blank from the raw blank in one or more successive stages and/or one or more forming tools to form the blank into a sheet metal formed part.
  • the apparatus may also include a transport device for transporting the strip material through the measuring device and the cutting device to the rotating device.
  • the transport device can have a variety of rolling elements on which the strip material rests and is guided further.
  • a buffer device for temporarily buffering the flexibly rolled strip material can also be provided upstream of the feeding device.
  • the feeding device may comprise a first feed unit, which is arranged behind the buffer device in the feeding direction of the strip material, and a second feed unit, which is arranged downstream the first feed unit and upstream the separating device.
  • the first and second feed units are configured to move the strip material from the buffer device to the separating device in dependence on the thickness measurement and the length measurement.
  • the measuring device may comprise at least one length measuring unit for continuously measuring the length of the strip material, and one thickness measuring unit for continuously measuring the thickness of the strip material along the length.
  • the thickness measuring unit is preferably arranged between the buffer device and the first feed unit in the feed direction of the strip material.
  • the length measuring unit is preferably arranged behind the first feed unit in the feed direction of the strip material.
  • the apparatus may also include a decoiler for uncoiling the flexibly rolled strip material and one or more straightening units arranged in series for straightening the flexibly rolled strip material.
  • a decoiler for uncoiling the flexibly rolled strip material
  • one or more straightening units arranged in series for straightening the flexibly rolled strip material.
  • the feeding device for the separation of the strip material into blanks is controlled independently of the feed of the coiler and the straightening unit.
  • the apparatus and the method are advantageous for inspecting, precise positioning and separation of flexibly rolled strip material into tailored rolled blanks and subsequent further processing into shaped cuts and/or pressed parts.
  • FIG. 1 a method and/or apparatus for producing a product from flexibly rolled metal strip in a first embodiment
  • FIG. 2 a method and/or apparatus for producing a product from flexibly rolled metal strip in a modified embodiment
  • FIG. 3 shows the thickness profile of an exemplary blank which can be produced with the method and apparatus according to FIG. 1 and/or FIG. 2 ;
  • FIG. 4 parts of the apparatus from FIG. 1 in a three-dimensional representation for producing blanks according to FIG. 3 ;
  • FIG. 5 shows the thickness profile of another exemplary blank which can be produced with the method and apparatus according to FIG. 1 and/or FIG. 2 ;
  • FIG. 6 shows the thickness profile of another exemplary blank which can be produced with the method and apparatus according to FIG. 1 and/or FIG. 2 ;
  • FIG. 7 part of the apparatus from FIG. 1 in a three-dimensional representation for producing blanks according to FIG. 6 ;
  • FIG. 8 further optional apparatus components of an apparatus according to the invention schematically in three-dimensional representation.
  • FIGS. 1 to 8 are described together below, with reference to special features of individual figures.
  • FIG. 1 shows a process and individual components of an apparatus 2 for producing a product from a flexibly rolled metal strip.
  • the method comprises the steps of providing S 1 a flexibly rolled strip material 3 , determining S 20 a measured thickness profile D 3 of the strip material 3 and calculating a desired cutting position for a blank 4 to be cut from the strip material, and feeding 510 of the strip material 3 to the desired cutting position, cutting S 30 of the blank 4 from the strip material 3 along a nominal cutting line 32 in the desired cutting position, rotating S 40 the blank 4 depending on the determined measurement thickness profile into a defined processing position P 50 for further processing, and processing S 50 of the blank 4 to the product 5 .
  • the associated apparatus components are a feeding device 10 , a measuring device 20 , a separating device 30 , a rotating device 40 and a processing device 50 .
  • a flexible rolled strip material is understood to be a metal strip that has a variable sheet thickness over its length.
  • a variable sheet thickness profile can be produced by rolling a strip material with a substantially constant starting sheet thickness by rolling with dynamical variation of the roll gap.
  • the strip material is given different thicknesses D 3 over the length L 3 in the rolling direction. After flexible rolling, the strip material 3 can be wound up into a coil 1 so that it can be fed to the next processing step.
  • the feeding device 10 can have one or more feed units 11 , by which the strip material is moved in feed direction R 3 .
  • a feed unit can have two feed rollers between which the strip material 3 is fed through and moved in the feed direction by rotatingly driving the feed rollers 11 .
  • the measuring device 20 may comprise at least a length measuring unit 21 for continuously measuring the length L of the strip material 3 , and a thickness measuring unit 22 for continuously measuring the thickness D 3 of the strip material 3 along its length.
  • the calculation of the desired cutting position for the blank 4 to be separated is then carried out depending on the determined measurement thickness profile D 3 of the strip material 3 and the associated desired thickness profile of the blank 4 to be cut therefrom.
  • the length measuring unit 21 can comprise a measuring wheel 23 , which is in contact with one side of the strip material 3 , and optionally a support wheel 24 , which is in contact with the opposite side of the strip material 3 as a counter support for the measuring wheel.
  • the length measuring unit 21 and the thickness measuring unit 22 can be coupled with each other in a measuring-technical manner.
  • a fixed distance A 1 is set between the thickness measuring unit 22 and the first feed unit 11 .
  • This distance A 1 is measured precisely, preferably with an accuracy of up to +/ ⁇ 0.2 mm, and maintained during operation of the line. In this way, the length reference between the thickness measurement on the one hand and the feed and/or length measurement on the other hand can be reliably ensured over the entire length of the strip material.
  • the length measuring unit 21 can generate 21 trigger signals B 1 and transmit them to the thickness measuring unit 22 .
  • Each trigger signal B 1 serves as a trigger for a thickness measurement, so that with each trigger signal of the length measuring unit 21 a thickness measuring value is generated and assigned to a corresponding length measuring value. In this way, data sets of pairs of length and thickness values are generated, from which the actual thickness profile of the blank 4 to be cut out of the strip material 3 can be determined.
  • the separating device 30 can be selected according to the requirements of the flat product 4 to be separated and can comprise, for example, a cut-to-length shear 31 , as shown schematically, or a cut-to-length beam cutting unit, in particular a laser cutting unit.
  • the separation of a raw blank 4 from the strip material 3 is performed along a nominal cutting edge 32 in the desired cutting position P 30 , into which the strip has been advanced and positioned by the feeding device 10 .
  • the present method and apparatus are used to produce blanks 4 whose longest length L 4 is greater than the width B 3 of the strip material 3 , which corresponds to the width B 4 of the blank 4 to be cut off.
  • blanks 4 with a length L 4 of less than 2500 mm, in particular less than 2000 mm, and/or with a length of more than 400 mm, in particular more than 600 mm are separated from the strip material.
  • the distance A 2 between the thickness measuring unit 22 and the separating device 30 is preferably at least twice the blank length L 4 of the blank 4 to be cut out of the strip material 3 .
  • the distance A 2 is at least twice the blank length plus the feed path covered by the strip material 3 during the computing time for a blank 4 to be cut out.
  • the apparatus and/or method is configured such that the thickness profiles determined by the measuring device 20 are compared with the desired nominal thickness profile.
  • the control unit 26 evaluates whether or not the flexible rolled strip 3 meets the required thickness tolerances. From the result of the comparison, the feed length for the strip 3 , respectively the blank 4 to be cut out therefrom can be determined.
  • the strip can be divided into regions that are OK (so-called OK parts) and those that are not OK (so-called not OK parts).
  • the position and length of these individual regions in the strip 3 is transmitted by the thickness measuring device 20 to the feeding device 10 , which carries out the instructed feeds accordingly and positions the reference edges of the individual feed lengths accurately to the separation point 32 of the separating device 30 .
  • the feeding device 10 can transmit the information to the other apparatus components ( 30 , 40 , 50 ) as to whether the feed length has an OK thickness profile or not.
  • the blank 4 After the blank 4 has been cut off, it is rotated about a vertical axis A 40 in the rotating device 40 .
  • the rotating device can be designed and configured to meet the requirements of the blanks to be rotated.
  • the rotating device 40 can comprise a number of suction cups 41 , which are attached to a movable carrier 42 .
  • the blank 4 is rotated from the starting position P 30 after cutting from the strip 3 , in which the blank 4 is still aligned in the direction R 3 of strip 3 , depending on the measured thickness profile D 3 so that it is aligned with its thickness profile D 4 in a defined processing position P 50 .
  • one or more tools of the further processing device 50 are aligned transversely to the strip feed direction R so that the blanks 4 are each rotated by 90° from the cut-off position P 30 to the processing position P 50 .
  • the processing device 50 is selected according to the requirements of the product 5 to be manufactured.
  • the device 50 is configured as a cutting device.
  • the edges of the raw blank 4 are cut off in order to produce a shape cut blank 5 with a desired outer contour.
  • the cutting device 50 can comprise a lower tool part 51 and a movable upper tool part 52 .
  • the lower tool part 51 can be positioned and fixed on a table 53 .
  • the upper tool part 52 can be attached to a press ram 54 which is movably guided relative to the table 53 via guide bushes 55 .
  • the processing device 50 includes a cutting and forming tool.
  • the design and function are similar to those of the cutting device described above. Therefore, the same details are marked with the same reference signs as in FIG. 1 .
  • the only difference is that in addition to generating the shape cut, the intermediate product is formed into a three-dimensional component 5 in a forming tool.
  • the components produced in this way can also be referred to as press-formed parts or stamped parts.
  • the device 50 can have a combined cutting and forming tool (punching tool) with which the press-formed part is produced in one step.
  • the device 50 can also comprise several processing steps arranged one after the other with respective tools, which are passed through one after the other by the part to be produced.
  • at least one cutting tool in which the blank 4 is cut to form the shape-cut blank, and at least one downstream forming tool, in which the shape-cut blank is formed to the press-formed part 5 , may be provided.
  • Strip material 3 can have alternating strip regions with different or equal, symmetrical or asymmetrical strip thickness profiles D 3 over the length L 3 .
  • FIGS. 3, 5 and 6 show different forms of blanks 4 to be produced from strip material 3 , wherein FIG. 4 shows a method suitable for processing blanks 4 as shown in FIGS. 3 and 5 , and wherein FIG. 7 shows a method suitable for processing blanks 4 as shown in FIG. 6 .
  • FIG. 3 shows an exemplary blank 4 in the form of a rectangular blank with an asymmetrical thickness D 4 over the length L 4 of the blank and with end sections of equal thickness.
  • a transition section 9 a , 9 b , 9 c of variable thickness is formed, which can also be called ramps.
  • the rectangular blank 4 shown in FIG. 3 is produced by simply cutting the strip material 3 , which has been brought to the correct cutting position P 30 by the feeding device 10 , for example by using a cutting shear 31 .
  • FIG. 4 shows a corresponding method for the processing of blanks 4 with a sheet thickness profile according to FIG. 3 by an apparatus 2 according to the invention.
  • the rotated blanks 4 are cut in cycles to form cuts 5 with a desired peripheral contour.
  • Parts identified by the control unit as “not OK” blanks can be ejected and scrapped between the cutting device 30 and the processing device 50 . This can be done by the rotating device 40 or a separate ejection device.
  • the “OK” products 5 can be stacked behind the device 50 by a stacking unit (not shown).
  • FIG. 5 shows another embodiment of a rectangular blank 4 , which in contrast to FIG. 3 has a symmetrical thickness D 4 over the length L 4 . It can be seen that the thickness D 4 of the blank 4 is mirror-symmetrical in relation to a center plane E.
  • the blank 4 shown here can be processed in the same way as the blank shown in FIG. 3 using the process shown in FIG. 4 which is why, to avoid repetition, reference is made to the above description.
  • FIG. 6 shows an embodiment of blanks with end sections having a different thickness.
  • two successive blank regions 3 A, 3 B in the strip 3 are arranged mirrored to each other.
  • a first strip region 3 A from which a first blank 4 A is to be separated
  • a second strip region 3 B from which a second blank 4 B is to be separated
  • the profile of the first strip region for a first blank 4 A corresponds to the profile of the strip region for a second blank 4 B with regard to the profile shape, but not with regard to the alignment.
  • the blanks 4 A, 4 B shown here have an asymmetrical thickness profile D 4 A, D 4 B over the respective length L 4 A, L 4 B.
  • the thickness D 4 A of the blank 4 A in relation to a center plane EAB is mirror-symmetrical to the thickness D 4 B of the following blank 4 B.
  • the blank 4 A has, starting from the first end 6 A, a first section 7 Aa with a first thickness, a second section 7 Ab with a second thickness, a third section 7 Ac with a third thickness, and a fourth section 7 Ad with a fourth thickness different from the first thickness of the first section 7 Aa.
  • the second blank 4 B is accordingly symmetrical to the first blank 4 A.
  • the second blank 4 B is followed by a first blank 4 A, and so on.
  • FIG. 7 shows a corresponding method for processing blanks 4 A, 4 B with sheet thickness profiles according to FIG. 6 , wherein the different thicknesses D 7 a , D 7 b , D 7 c , D 7 d of the blanks 4 A, 4 B from FIG. 6 are shown in simplified form with a, b, c, d.
  • the rectangular blanks 4 A, 4 B are separated by means of the separating device 30 through cross-cutting the strip material 3 , brought to the correct cutting position 32 by the feeding device 10 , and then rotated to the desired position P 50 .
  • a special feature is that the thickness profiles D 4 A and D 4 B differ from each other in that they are not congruent in their arrangement in the strip material.
  • the first and second blanks 4 A, 4 B are rotated individually by the rotating device 50 according to their respective profile orientation.
  • the first blanks 4 A are rotated depending on the measuring thickness profile D 4 A in a first direction of rotation R 40 A (counter-clockwise in this case) and the second blanks 4 B are rotated depending on the measuring thickness profile D 4 B in the opposite, second direction of rotation R 40 B (clockwise in this case).
  • the first and second blanks with their respective thickness profile are now aligned identically and are therefore uniform.
  • the blanks 4 are fed to the further processing device 50 , which can be configured according to one of the above described embodiments.
  • blanks 4 with variable thickness profile (Tailor Rolled Blanks), which have different sheet thicknesses at the opposite ends and/or those with an asymmetrical sheet thickness profile, can be produced efficiently and with high production accuracy.
  • the blanks 4 , 4 A, 4 B are correctly aligned before entering the contour cutting tool so that the sheet thickness profile always matches the shape or cutting contour in the tool.
  • the correctly aligned blanks 4 are fed into the following tool 50 and processed there into shaped cuts or press-formed parts.
  • the feed length of the blanks into and/or through the tool is shortened so that shorter cycle times are achieved overall.
  • FIG. 8 shows further optional apparatus components of an apparatus according to the invention in three-dimensional representation.
  • the starting material is a coil 1 of flexibly rolled metal strip which is unwound from a decoiler 61 and then passes through a straightening unit 62 with a plurality of rolls.
  • an infeed driver 63 can be provided to pull the strip material 3 from the decoiler and feed it to the straightening unit 62 .
  • a take-off roller 64 can be arranged in the processing direction behind the straightening unit 62 , which take-off roller 64 transmits a feed force to the strip material 3 .
  • FIG. 1 shows the torques M 61 , M 62 , M 63 , M 64 that can be transmitted from the respective components 61 , 62 , 63 , 64 to the strip material 3 .
  • a buffer device 70 is provided, which is designed to temporarily store a respective section of strip 3 . This decouples a feed movement of the uncoiling and straightening group 60 from a feed movement of the following apparatus components ( 10 - 50 ).
  • the uncoiling and straightening group 60 conveys the strip 3 to the strip buffer 70 , which makes the flexibly rolled strip 3 available for further processing in the separation group 15 .
  • the conveying and/or unwinding speed of the uncoiling and straightening group 60 can be controlled by a level sensor 71 of the strip buffer 70 .
  • the level sensor 71 can, for example, include an ultrasonic sensor or an optical sensor which senses the depth of the strip loop hanging in the strip buffer and transmits a corresponding signal to the controller for the uncoiling and straightening group.
  • the apparatus components already described above are the feeding device 10 , measuring device 20 and separating device 30 .
  • the feeding device 10 comprises a first feed unit 11 and a second feed unit 12 , which are arranged at a distance from each other.
  • the measuring device comprises a further length measuring unit 25 in addition to the thickness measuring unit 22 and the length measuring unit 21 . It can be seen that the thickness measuring unit 22 for continuous measurement of the thickness D 3 of the strip material 3 is arranged in front of the first feed unit 11 , and that the first length measuring unit 21 for continuous measurement of the length L 3 of the strip material 3 is arranged behind the first feed unit 11 .
  • the second length measuring unit 25 is assigned to the second feed unit 12 and arranged behind same in feed direction R 10 .
  • the two feed devices 11 , 12 are operated synchronously and are designed to move the strip material 3 from the buffer device 70 to the separation device 30 in dependence on the thickness measurement and the length measurement.
  • the two feeds 11 , 12 each exert a feed force on the strip material to move it.
  • the second feed device 12 can be driven with a slight advance relative to the first feed device 11 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
US17/057,734 2018-05-24 2019-05-06 Producing a product made of a flexibly rolled strip material Abandoned US20210205872A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP18174010.1A EP3572161B1 (fr) 2018-05-24 2018-05-24 Procédé et dispositif de fabrication d'un produit de matériau en bande laminé flexible
EP18174010.1 2018-05-24
PCT/EP2019/061598 WO2019223991A1 (fr) 2018-05-24 2019-05-06 Procédé et dispositif de fabrication d'un produit à partir d'un matériau en bande laminé flexible

Publications (1)

Publication Number Publication Date
US20210205872A1 true US20210205872A1 (en) 2021-07-08

Family

ID=62455338

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/057,734 Abandoned US20210205872A1 (en) 2018-05-24 2019-05-06 Producing a product made of a flexibly rolled strip material

Country Status (4)

Country Link
US (1) US20210205872A1 (fr)
EP (1) EP3572161B1 (fr)
CN (1) CN112512719A (fr)
WO (1) WO2019223991A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112122365B (zh) * 2020-08-26 2021-08-03 北京科技大学 一种基于称重的箔带横断面轮廓测量方法
DE102022114499A1 (de) * 2022-06-09 2023-12-14 Schaeffler Technologies AG & Co. KG Werkzeugvorrichtung mit Schneideinrichtung zur Herstellung einer Bipolarplatte und Verfahren
CN115532943B (zh) * 2022-11-24 2023-05-12 苏州铭峰精密机械有限公司 一种长宽大比例产品的成型方法及长度缩短的成型模具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937553A (en) * 1955-09-12 1960-05-24 Smith Corp A O Method and apparatus for cutting blanks and rotating alternate pieces into feeding alignment
DE60137689D1 (de) * 2000-07-06 2009-04-02 Trico Products Co Verfahren und vorrichtung zur flexiblen fertigung von gekrümmten einzelartikeln
DE102004023887A1 (de) * 2004-05-12 2005-12-08 Muhr Und Bender Kg Coilverarbeitung von flexibel gewalztem Band
JP5660972B2 (ja) * 2011-05-18 2015-01-28 株式会社神戸製鋼所 差厚板の製造方法及び圧延装置
CN104551538B (zh) 2013-10-18 2017-02-01 沈阳东宝海星金属材料科技有限公司 一种差厚板定尺剪切制备方法
CN106270718B (zh) * 2015-05-20 2018-07-06 宝山钢铁股份有限公司 冷轧变厚度板自动剪切的设备及基于该设备的剪切方法
EP3181248B1 (fr) 2015-12-18 2018-01-10 Muhr und Bender KG Procede et installation de fabrication d'une platine de tole
CN106513436B (zh) * 2016-12-02 2018-02-16 东北大学 一种单面周期性变厚度板带材的轧制方法

Also Published As

Publication number Publication date
CN112512719A (zh) 2021-03-16
WO2019223991A1 (fr) 2019-11-28
EP3572161B1 (fr) 2021-02-24
EP3572161A1 (fr) 2019-11-27

Similar Documents

Publication Publication Date Title
JP4903222B2 (ja) 湾曲したばね部材を製造するための方法及び装置
US10399132B2 (en) Sheet metal blank
US10850353B2 (en) Method and system for enabling synchronous sheet transfer to follow laser cutting dynamically
JP5591831B2 (ja) コイルストリップ輪郭コンベヤシステムからのレーザブランキング
US20210205872A1 (en) Producing a product made of a flexibly rolled strip material
US8201429B1 (en) Blanking line using slitter as feeder
US20170136513A1 (en) Apparatus and method for producing a tailored sheet metal strip or metal profile
CN102105256A (zh) 用于高速切削的渐进激光切料装置
US20210245216A1 (en) Separating flexibly rolled strip material
US9017497B2 (en) Method of manufacturing laminated core segment
IL257250A (en) Engraving methods and board cutting materials
CN108290203B (zh) 辊式输送机、冲压系统、以及带状材输送方法
KR101605888B1 (ko) 외주링 제조 장치 및 제조 방법
JP2020075287A (ja) 押出同期切断装置
US7096706B2 (en) Drawing apparatus and method of operating same
US9579815B2 (en) In-line punching machine
US20070266753A1 (en) Gutter Cover Manufacturing Apparatus
JP2000309458A (ja) 一定直径のベースを有するインジェクタ回転処理装置および一様な速さで進む細長いウエブを取り扱う方法
JP2012179652A (ja) フォーマーにおける線材端末処理装置
JP2012135120A (ja) 圧延部材の加工方法
CN116213577A (zh) 一种定转子冲片伺服摆动冲模机
CA2643248A1 (fr) Appareil et procede de faconnage de tole en bandes multifonctions
JP3168784U (ja) 熱間フォーマーにおけるバー材端末処理装置
JP2021160146A (ja) 製袋機、製袋機の制御方法、および袋の製造方法
KR20160116095A (ko) 롤포밍 가공 부품 제조 방법 및 그 장치

Legal Events

Date Code Title Description
AS Assignment

Owner name: MUHR UND BENDER KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:IVO, JOACHIM;DAHL, THOMAS;BARCHET, ANDREAS;AND OTHERS;SIGNING DATES FROM 20210102 TO 20210205;REEL/FRAME:055240/0724

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION