EP4065295A1 - System and method for flexibly rolling metal strip material - Google Patents
System and method for flexibly rolling metal strip materialInfo
- Publication number
- EP4065295A1 EP4065295A1 EP20816160.4A EP20816160A EP4065295A1 EP 4065295 A1 EP4065295 A1 EP 4065295A1 EP 20816160 A EP20816160 A EP 20816160A EP 4065295 A1 EP4065295 A1 EP 4065295A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip material
- traction
- unit
- drive
- motor
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 186
- 238000005096 rolling process Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 title abstract description 7
- 239000002184 metal Substances 0.000 title abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 63
- 238000003860 storage Methods 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
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- 238000011143 downstream manufacturing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/003—Regulation of tension or speed; Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
- B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
- B21C47/3458—Endlessly revolving chain systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- 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
- B21B2015/0028—Drawing the rolled product
-
- 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
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
Definitions
- the invention relates to a device and a method for the flexible rolling of metallic strip material.
- strip material with an essentially uniform sheet thickness is rolled out over the length by changing the roll gap during the process to strip material with a variable sheet thickness.
- the th sections of different thicknesses generated by the flexible rolling extend transversely to the longitudinal direction or to the rolling direction of the strip material.
- the strip material can easily be rewound into a coil and fed to further processing at another point, or it can be further processed directly, for example by cutting the strip material to individual sheet metal elements.
- a method for the flexible rolling of metal strip is known, with a first flasher device for unwinding, from which the strip is unwound with a defined strip starting thickness, a roll stand with a regulable roll gap, and a second flasher device for unwinding, on which the rolled strip is wound with a strip thickness that is reduced compared to the initial strip thickness.
- first strip storage means between the first Haspelvor direction and the roll stand, and second strip storage means between the Walzge scaffold and the second reel device.
- the tape storage means each comprise a plurality of rollers over which the tape material is guided in the form of an “S” with at least partially superimposed sheets.
- the S is distorted in such a way that that the length of the metal strip between the inlet and the outlet is changed in or out of the strip storage means.
- Such tape storage medium with several roles are also referred to as a dancer system.
- the device comprises two controllable chain drive units, each with an endless chain, between which the long material is passed, two controllable pressure units, each of which exerts a pressure force on the associated chain in the direction of the long material, and a controllable actuating unit that is mechanically connected to the chain drive units and these can move in the longitudinal direction of the long material.
- the actuating unit includes a variable-length linear drive in the form of a hydraulic piston-cylinder unit. By actuating the piston-cylinder unit, the chain drive units are moved relative to a stationary component in or against the feed direction of the strip material.
- the chain drive units each include a carrier, a drive roller, an order steering roller and a motor that drives the respective chain evenly.
- the present invention is based on the object of proposing a system for the flexible rolling of metallic strip material, which has a simple structure, takes up little space and which can optionally be integrated into a process chain with further processing devices.
- the task is also to propose a corresponding method that enables the efficient production of flexibly rolled strip material or parts made therefrom light.
- a system for processing metallic strip material comprising: a supply unit for supplying metallic Tape material; a belt drive device which has at least one controllable traction drive unit with at least one motor and an endless traction mechanism that can be driven by the motor, as well as a pressing unit for pressing the traction mechanism against the belt material, the drive power of the motor and the pressing force of the pressing unit being variably adjustable during operation, so that a drive force acting on the strip material by the traction means with frictional contact is variably adjustable; a rolling device for flexibly rolling the strip material to produce a variable sheet thickness over the length of the strip material; a measuring device, in particular a tensile measuring device, which is arranged or configured to detect a physical variable acting on the strip material, in particular an inlet tensile force; wherein the drive power of the motor of the belt drive device can be regulated on the basis of the physical variable determined by the measuring device.
- the traction drive unit is held stationary in particular in the longitudinal direction, for example fixed to a carrier element or housing.
- the drive power or drive torque of the motor which drives the endless traction means in rotation, the drive force acting on the strip material by the traction means can be variably adjusted as required.
- This system has a simple and compact structure due to the traction drive units.
- the entry tensile force that is to say the tensile force acting on the strip material on the entry side of the rolling device, can be regulated directly by controlling the drive power of the motor. No or only slight displacement paths of the belt drive device are necessary, which has an overall favorable effect on the space requirement of the system. Even if there is little space available, the system can be integrated into a process chain with further processing devices. In particular, further processing steps can be upstream and / or downstream, since the train in front of the train drive unit in front of the rolling device or after the train drive unit behind the rolling device is independent of the process train in the area of the rolling device.
- a strip storage unit is used in front of the rolling device, other units that would otherwise be required, such as a dancer unit or a loop unit, may be omitted.
- the hydraulic adjustment of the work rolls is the main process, which is possible via thickness control, position control or mass flow control. This creates strong variations of the Process variables tensile force, speed and rolling force.
- a traction drive unit is understood in particular to be a drive unit which transmits drive power (speeds and torques) with the aid of pliable or flexible machine elements.
- a flexible machine element can essentially transmit tensile forces and is therefore also referred to as a tensile means.
- whoever uses the positive traction means such as a chain or a toothed belt, which always have the same peripheral speed over the circumference.
- a drive unit with a chain as a traction device can be referred to as a chain drive unit; a drive unit with a toothed belt accordingly as a toothed belt drive unit.
- a second belt drive device can be arranged behind the rolling device in the direction of movement of the strip material.
- the use of a second belt drive device has the advantage that the processing or transport direction of the belt material can also be reversed.
- the second belt drive device is in the direction of movement of the strip material in front of the rolling device, and the first Bandantriebsvor direction behind it.
- the second belt drive device can be supported against a stationary component by means of at least one spring unit.
- the drive power of the motor of the second Bandantriebsvor direction can be kept constant.
- Any elements that are suitable for absorbing, storing and releasing external forces can be used as the spring unit.
- mechanical, hydraulic, electrical or pneumatic springs or energy stores can be used as spring units.
- the speeds of the two devices can be correspondingly the constant volume of the strip material can be set.
- a control with constant stretching is also possible, that is, the drive speed of the drive device of the strip material downstream in the transport direction of the strip material is slightly faster than the drive speed of the upstream drive device.
- the differential speed between the two drive devices taking into account the constant volume, can for example be up to 3%.
- the two tape drive devices are preferably designed to be the same in terms of structure and mode of operation. It is therefore understood that all the details described in the context of the present disclosure in relation to one of the two tape drive devices or their individual components can apply equally to the second tape drive device, unless otherwise stated.
- the second belt drive device also comprises at least one controllable traction drive unit with a motor, an endless traction mechanism that can be driven in a rotating manner by the motor, and a pressing unit for pressing the traction mechanism against the belt material.
- the traction means includes, in particular, form-fitting machine elements, such as a chain or a toothed belt.
- the tensile force acting on the strip material can be regulated as required in order to support the rolling process for producing the desired thickness profile in the strip material.
- the measuring device can be designed as a tensile measuring device which can be arranged between the belt drive device and the rolling device in order to detect the infeed tensile force acting on the strip material as a physical variable.
- a force measuring device can be provided which can detect a signal representing the rolling force of the rolling device as a physical variable.
- a position measuring device can be provided which is attached to an actuating unit for a Roller can be arranged in order to detect the actuating position of an actuating unit for a roller as a physical variable.
- a second tension measuring device can be arranged between the rolling device and the second belt drive device in order to detect the outlet tensile force acting on the strip material on the outlet side.
- the drive power of the motor of the second belt drive device can in particular be regulated on the basis of the run-out tensile force determined by the second tensile measuring device.
- a tape storage device can be arranged between the second tape drive device and a downstream processing device in which the tape material can be stored as it passes between a storage inlet and a storage outlet.
- the contact pressure of the respective contact pressure unit can be regulated on the basis of the tensile force determined by the respective tensile measuring device.
- the drive power of the motor and / or the pressing force of the pressing unit can be variably regulated during operation, so that a target tensile force acting on the strip material by the tensile means with frictional contact can be variably set.
- a tape storage device in which the tape material can be stored as it passes between a storage inlet and a storage outlet.
- a dancer unit and / or a loop unit can optionally be dispensed with.
- the tape storage device can have a vertical memory, a horizontal memory or a loop memory.
- a vertical store is characterized in that tape material is stored in the vertical direction, the space requirement in the horizontal direction being correspondingly small.
- a horizontal memory stores strip material in the horizontal direction, whereby the space requirement in the vertical direction is correspondingly ge ring.
- the motor of the traction drive unit generates a rotary movement for the rotating drive of the traction drive. In this respect, the motor can also be referred to as a rotary drive or rotary motor.
- the drive power of a rotary drive results in particular from the product of speed and torque.
- a change in the motor drive power can therefore take place by changing the drive torque and / or the drive speed.
- the motor or motors can be designed as a hydraulic motor or an electric motor, in particular as a hydraulic or electrical direct drive.
- a torque motor for example, can be used as an electrical direct drive.
- Such hydraulic or electric motors enable high torques at relatively low speeds and can be regulated in a highly dynamic manner.
- the belt drive device or the individual components of the belt drive device are preferably designed to accelerate and / or decelerate the belt material with at least 3 m / sec 2.
- a belt drive device can be designed, for example, to generate tensile forces of at least 1 N / mm 2 , preferably at least 10 N / mm 2 and / or less than 120 N / mm 2 based on the cross-sectional area of the belt material.
- the band drive device can be designed to generate tensile forces of at least 50 N / mm 2 and / or less than 120 N / mm 2 based on the cross-sectional area of the band material.
- the belt drive device can be designed with a lower tensile force that can be generated, for example up to 90 N / mm 2 .
- the tape drive device can have a drivable first axle which can be driven in rotation by the motor in order to transmit a drive torque to the traction means, and a second axle which is driven in rotation by the traction means.
- One or two motors can be provided to drive the first axis. When using two motors, these can be controlled as a function of or independently of one another, and the two motors can be driven synchronously with one another in order to jointly drive the first axis.
- the system can have two controllable traction drive units, between which the strip material can be carried out with frictional contact is, so that the strip material is moved during operation of the traction drive units in the direction of movement of the traction element sections in contact with the strip material.
- the two traction drive units can be designed the same in terms of structure and function. If two motors are used per drive unit, the total number of motors for the belt drive device is four.
- the two traction drive units can each have an associated pressing unit, which in each case exerts a pressing force on the respective traction device in the direction of the strip material.
- a single pressing unit can also be provided, which can act on both traction drive units towards one another or move them away from one another.
- a pressing unit can, for example, have one or more linear drives, in particular a piston-cylinder unit, which can generate a force transverse to the direction of the belt.
- a traction drive unit can comprise a large number of interconnected traction members that form an endless traction medium.
- the two traction drive units can each have a carrier, a drive wheel and a deflection wheel or deflection roller, around which the endless traction means is arranged in a circumferential manner.
- the drive wheel and the order steering wheel are rotatably mounted at a distance from each other on the first carrier.
- the drive wheel which can be driven to rotate by the motor, is preferably positively engaged with the traction mechanism in order to transmit torque from the motor to the traction mechanism.
- the traction means can have a plurality of circumferentially distributed friction bodies.
- the friction bodies are designed in such a way that they come into frictional contact with the tape material when the traction means moves around the circumference and move the tape material clamped between the two opposing traction means arrangements in the feed direction.
- One or more friction bodies can each be arranged on one of the traction element members.
- the friction bodies each have a friction lining which is matched to the material of the band material in such a way that adhesion is generated between the friction lining and the band material.
- a control unit for controlling the advance speed and / or the tensile force of the strip material.
- the control unit can control one or more components of one or more belt drive devices.
- the control unit can control at least the drive motor and the pressing unit, and for this purpose is connected in terms of control technology to the units mentioned.
- each individual control variable can be set individually by the control unit.
- the individual control variables can preferably be set continuously between a maximum value and a minimum value.
- a method for processing metallic strip material comprising the steps of: driving the strip material by means of a belt drive device, the strip material being unwound from a feed unit and fed to a downstream device for flexible rolling, the belt drive device having at least one controllable traction drive unit ei nem motor, an endless traction means that can be driven by the motor and a pressing unit for pressing the traction means against the strip material; Sensing an infeed tensile force acting on the strip material by means of a Switzerlandmessvorrich device which is arranged between the belt drive device and the device for flexible rolling; Control of the power of the motor of the belt drive device as a function of the infeed tensile force determined by the tensile measuring device.
- the method offers the same advantages that have already been described above in connection with the system and to which reference is made here in abbreviated form.
- the method makes it possible to compensate for differences in speed or path between different parts of the system, for example between a part of the system arranged in front of and behind the rolling unit, or to keep the tensile force acting on the strip material essentially constant.
- the contact pressure of the contact pressure unit is regulated as a function of the inlet tensile force determined by the tensile measuring device.
- the drive power of the motor and the pressing force of the pressing unit can be regulated in such a way that the drive force acting on the belt material from the belt drive device is controlled dynamically between 1 and 120 N / mm 2 based on the cross section of the belt material.
- the strip material can be driven by means of a second belt drive device which is arranged behind the rolling device in the direction of movement of the Bandma material.
- the second belt drive device can have at least one controllable traction drive unit with a motor, an endless traction mechanism that can be driven by the motor, and a pressing unit for pressing the traction mechanism against the belt material.
- the run-out tensile force acting on the strip material can be determined by means of a second Switzerlandmessvor device which is arranged between the rolling device and the second strip drive device.
- the drive power of the motor of the second belt drive device can be set to a constant value.
- the pressing force of the pressing unit of the second belt drive device can be regulated as a function of the outlet tensile force determined by the second tensile measuring device.
- the system can be controlled with the method in such a way that the speed and / or force of the strip material is suitably adapted to the requirements of the upstream and / or downstream processes.
- the at least one belt drive device can be controlled in such a way that the longitudinal force acting on the belt material is zero on one side, that is to say the inlet or outlet side, and the target tensile force required for the respective process is applied on the other side.
- Setting a tensile force of zero has the advantage that no further device is required to apply a basic tensile force. It goes without saying that other tensile forces lying between zero and the target force can also be set.
- Figure 1 shows a system according to the invention for processing metallic Bandma material in one embodiment
- FIG. 2 shows a system according to the invention for processing metallic strip material in a further embodiment
- FIG. 3 shows a system according to the invention for processing metallic strip material in a further embodiment
- FIG. 4 shows a system not according to the invention for processing metallic strip material in one embodiment
- FIG. 5 schematically shows a belt drive device for a system according to FIG. 1, 2 and / or 3 in a modified embodiment A) in a three-dimensional representation;
- FIG. 6 shows a storage unit for a system according to the invention in a first embodiment
- FIG. 7 shows a storage unit for a system according to the invention in a further embodiment.
- FIG. 1 shows a system 2 according to the invention for processing metallic strip material.
- the system 2 has a supply unit 3 for supplying metallic strip material 4, a belt drive device 5, a rolling device 6 for flexibly rolling the strip material 4 and a tensile measuring device 7.
- a strip processing unit 8 and / or a strip storage unit 9 can be provided between the feed unit 3 and the rolling device 6.
- the feed unit 3 can be any desired unit which makes available or feeds the strip material 4 for the further process steps.
- a reel in particular a lightweight reel, can be used, which can be designed to essentially carry the coil and one for the To apply subsequent processes necessary winding tension, which can in particular be less than 10 N / mm 2 , but does not have to apply winding tension going beyond this.
- An optionally downstream strip processing unit 8 can be integrated into the system according to technical requirements.
- a cleaning unit and / or a welding unit for longitudinal or transverse welding of two supplied coils can be provided as an additional strip processing unit.
- a strip storage unit 9 can optionally be provided between the feed unit 3 and the roller unit 6, which is designed to temporarily store sections of the strip material 4 as it passes between a storage inlet and a storage outlet and thus to compensate for speed fluctuations during the transport of the strip material 4.
- the tape storage unit 9 is in the present case designed as a vertical storage device, with other embodiments also being possible.
- the belt drive device 5 in the present case comprises several functional units, which in particular interact in pairs, namely a first and second train drive unit 10, 10 ', as well as a first and second pressing unit 11, 1 T.
- the two pressing units 11, 1 T can be designed to to act in each case on an associated or jointly on both traction drive units 10, 10 '.
- a control unit 12 is also provided for controlling process parameters that influence the transport, in particular the feed speed v3 and / or the tensile force F3, F4 of the strip material 4. It goes without saying that only one traction drive unit or pressing unit can also be provided.
- the traction drive units 10, 10 ′′ each have a motor 13, 13 ′′ and an endless traction mechanism 14, 14 ′′ that can be driven by the motor.
- the motor 13, 13 ′′ can be drive-wise connected to a drive wheel 15, 15 ′′, which transmits a drive power of the motor to the traction means 14, 14 ′′.
- the traction device can be designed as a chain or a toothed belt.
- the traction drive unit 10, 10 ′′ can have a deflection wheel 16, 16 ′′ at the end opposite to the drive wheel 15, 15 ′′.
- the respective traction drive unit 10, 10 ′′ or the associated traction means 14, 14 ′′ is acted upon against the strip material 4 by means of the respective pressing unit 11, 1 T.
- the two traction drive units 10, 10 ′′ can be moved relative to one another in the transverse direction of the strip material 4.
- the drive power of the motor 13, 13 "and / or the pressing force of the pressing unit 11, 11 ' can be variably regulated during operation, so that a drive force acting on the strip material 4 by the traction means 14, 14" with frictional contact can be variably adjusted.
- the drive power of the motor 13, 13 ′′ is used in particular on the basis of the determined tensile force F4 at the inlet of the rolling unit 6, it being understood that other input variables such as the belt speed and / or the roll gap adjustment can be used.
- the traction drive units 10, 10 ′′ are held in place in the longitudinal direction of the strip material 4.
- a carrier 17 is provided on which a drive wheel 15, 15 ′′ and a deflection wheel 16, 16 ′′ of the traction drive unit are rotatably mounted at a distance from one another about rotary axes A15, A16.
- the traction drive units 10, 10 ′′ can each be arranged as a unit on the carrier 17 in a fixed position in the longitudinal direction and adjustable in height in the transverse direction.
- the carrier 17 can be a scaffold for example.
- the carrier 17 can be set up or fixed in place on a part of the building, in particular by means of corresponding supports 33, 33 '.
- the drive wheels 15, 15 ′′ can be driven in rotation by the associated motor 13, 13 ′′ and transmit torque introduced by the motor to the respective traction means 14, 14 ′′.
- suitable form-engaging means can be provided on the drive roller 15, 15 ′′, which engage positively in opposing form-engaging means of the traction means 14, 14 ′′.
- the pressing units 11, 11 ' can also be mounted on the carrier 17 or supported against it.
- a carrier 17 is provided for both traction drive units 10, 10 "and pressing units 11, 11", whereby a design with separate carriers for the upper and lower units is also possible.
- the motor or motors 13, 13 ′′ can be configured, for example, as a hydraulic motor or an electric motor, in particular as a torque motor.
- the motors 13, 13 ′′ are preferably designed to generate high torques and can be regulated in a highly dynamic manner.
- the motors 13, 13 ", but also the drive components downstream in the power path are designed or designed in such a way that that the strip material 4 accelerated or decelerated with at least 3 m / sec 2 who can.
- the first motor 13 for driving the first traction device 14 and the second motor 13 'for driving the second traction device 14' are operated in particular synchronously so that the the traction means 14, 14 'are moved at the same rotational speed v14, v14'.
- the belt drive device 5 or its components are in particular designed so that tensile forces of at least 1 N / mm 2 , preferably at least 10 N / mm 2 and / or less than 120 N / mm 2 based on the cross-sectional area of the belt material 4 are generated or can be transferred to the tape material.
- One or two motors 13, 13 ' can be provided for driving the first drive wheel or the first axle. If two motors are used, they can be controlled independently of one another, so that one of the two motors can be driven permanently and the other can be switched on if necessary.
- Each traction element can have one or more friction bodies 18, 18 ', which are designed to come into frictional contact with the belt material 4 when the traction elements 14, 14' move around and the belt material 4 clamped between the two opposing traction arrangements in the feed direction R move.
- the friction bodies 18, 18 ' are designed or matched to the material of the band material in such a way that static friction is generated between the friction body and the band material 4.
- the friction lining can contain in particular metallic components such as copper, brass, iron, gray cast iron, in each case as powder or fibers, mineral fibers and / or sulfides of iron, copper, antimony, zinc, Contain tin, molybdenum and / or components made of plastic that can be embedded in a carrier material, in particular made of rubber.
- metallic components such as copper, brass, iron, gray cast iron, in each case as powder or fibers, mineral fibers and / or sulfides of iron, copper, antimony, zinc, Contain tin, molybdenum and / or components made of plastic that can be embedded in a carrier material, in particular made of rubber.
- the traction element sections 19, 19 ′′ each in frictional contact with the strip material 4 are each operated by an associated pressing unit 11, 11 'with a pressing force F11, F11 'in the direction of the band material 4, that is, in the normal direction of the band material applied. It can be seen that the two pressing units 11, 11 'are arranged in such a way that the pressing forces F11, F11' are directed towards one another.
- the strength of the pressing force can be set variably, so that the frictional forces between the friction bodies 18, 18 'and the strip material 4, which depend on the normal force, can also be changed accordingly.
- the roller bodies 20, 20 ′′ act on a side of the traction elements facing away from the strip material 4 and act on it in the direction of the strip material 4.
- the actuator is connected to the electronic control unit with which the transport process is controlled.
- the size of the pressing forces F11, F11 ‘can be variably adjusted by means of the control unit between a maximum value and a minimum value as required.
- the two pressing units 11, 11 ' can be acted upon directly against one another by means of one or more actuators, which are each supported on both pressing units.
- a separate actuator can also be provided for each pressing unit, which is supported on a stationary component.
- the tension measuring device 7 is provided, which is designed to measure the tensile forces F4 acting on the strip material 4 between the belt drive device 5 and the rolling device 6.
- the Switzerlandmessvor device 7 can also be arranged at another suitable place, for example in the belt drive device 5.
- the tensile forces F4 determined here serve as an input variable for regulating the drive power of the motors 13, 13 ′′ of the belt drive device 5, it being understood that other input variables can be added.
- the rolling unit 6 is provided for flexible rolling.
- the strip material 4 which has a largely constant sheet metal thickness over its length before flexible rolling, is rolled by means of rollers 21, 21 ′′ in such a way that it has a variable sheet thickness over the length.
- the work rolls 21, 21 ' are supported by means of support rolls 22, 22'.
- a rolling force F6 is exerted on the strip material 4 by the rolling device 6, the work rolls 21, 21 'being supported by the support rollers with a supporting force which can correspond to the rolling force.
- the process is monitored and controlled, and the data determined by a strip thickness measurement 23 can be used as an input signal for controlling the rolls 21, 21 ′′.
- the strip material 4 has different thicknesses in the rolling direction.
- the strip material can be rolled out with a uniform thickness over the length, with degrees of rolling from 3% to over 40%, in particular in sections even over 50%.
- the initial thickness of the substrate can be between 0.7 mm and 4.0 mm, for example, without being restricted to this.
- the flexibly rolled material has correspondingly reduced thickness, thicker and thinner strip sections, which are manufactured according to a specified nominal thickness profile.
- An advantage of the system 2 is that by means of the belt drive device 5 with traction drive units 10, 10 "and regulated drive power M1, M2 of the motors 13, 13" or variable drive torque, a very compact arrangement for generating the variable counter-tension required for flexible rolling provided. As a result, the overall size of the system is relatively short, regardless of any downstream processes. Furthermore, the belt drive device 5 enables the setting of a constant rolling tensile force F4 on the inlet side of the rolling unit 4 by directly regulating the drive power via rapid acceleration or deceleration a cyclical tape jam results. Without further countermeasures, such a tape jam on the inlet side of the flexible rolling device 6 would lead to a reduction in tape tension.
- the inventive method for processing metallic shem strip material can be carried out with the following steps: Driving the Bandma material by means of the belt drive device 5, the strip material 4 being unwound from the feed unit 3 and fed to the downstream rolling device 6 for flexible rolling; Sensing a physical variable F4, F6 of a system component acting on the strip material 4 by means of a suitable measuring device 7; and regulating the drive power of the motor or motors 13, 13 'of the belt drive device 5 as a function of the determined physical variable F4, F6.
- FIG. 2 shows a system 2 according to the invention in a further embodiment. Individual units of the embodiment according to FIG. 2 correspond to those from FIG. 1, so that reference is made to the above description with regard to the similarities. The same or corresponding details are provided with the same reference symbols as in FIG. 1.
- a special feature of the present embodiment according to FIG. 2 is that a belt drive device 5 with traction drive units 10, 10 'is used in the processing direction of the strip material 4 behind the flexible rolling device 6.
- the tape drive device 5 corresponds to that of FIG. 1, so that reference is made to the above description for an abbreviated basis.
- a tension measuring device 7 can be arranged in order to detect the outlet tensile force F7 acting on the strip material 4 on the outlet side.
- the drive power or the drive torque M3, M4 of the motors 13, 13 ‘of the downstream belt drive device 5 preferably can in particular be regulated on the basis of the run-out tensile force F7 determined by the tensile measuring device 7‘.
- the belt drive device 5 ' is fixed in place on a stationary component, for example on a part of a building, which is shown schematically by the bearings 33, 33'.
- a tape storage unit 9 ' can optionally be provided behind the tape drive device 5', in which the tape material 4 can be temporarily stored as it passes through.
- a further processing unit 26 can be provided behind the tape storage unit 9 ', for example a reel, a forming tool, in particular for the manufacture of pipes, and / or a cutting device for separating the tape material or a pipe made from it.
- the torque of the traction drive unit 10 is changed dynamically as the manipulated variable in order to maintain the constant rolling tension F4, F7 required on the inlet or outlet side as a control variable between, for example, 50 and 90 N / mm 2 via the fastest acceleration or deceleration with, for example, 3 to 4 m / sec 2 to keep constant.
- F4 constant rolling tension
- F7 required on the inlet or outlet side
- speed v3 and rolling force F6 results in the further process variables speed v3 and rolling force F6.
- a dynamic change in the manipulated variable is important in flexible rolling because, in terms of the process, there is a cyclical belt jam in front of the roller 6, which causes the belt tensile forces to collapse.
- the required acceleration or deceleration is determined by direct measurement of the tensile force F4 or F7 and applied.
- the controlled variable can also be a rolling force F6 that is as constant as possible.
- the drive power M1, M2 or the torque of the motors 15, 15 ' is dynamically changed as a manipulated variable in order to achieve a rolling force reduction (F6) via an increase (F4, F7) or an increase in the rolling force via a reduction in tension.
- the speed v3 of the strip material 3 and the tensile force F4 or F7 result accordingly.
- the rolling force F6 is continuously determined by means of a rolling force measuring unit 35.
- a position measuring device 36 can be provided which is attached to an actuating unit for a roller 20, 20 '; 21, 21 'arranged can be in order to detect the actuating position s of an actuating unit for one or more rollers as a physical variable.
- FIG. 3 Another embodiment is shown schematically in FIG.
- the arrangement according to FIG. 3 largely corresponds to a combination of that according to FIG. 1 and FIG. 2, so that reference is made to the above description with regard to the similarities.
- the same or corresponding details are provided with the same reference numerals as in FIG. 1 and FIG. 2.
- the present embodiment is characterized in that a first belt drive device 5 is arranged in front of the flexible rolling device 6 and a second belt drive device 5 'is arranged behind the rolling device 6.
- the system 2 for processing metallic strip material according to FIG. 3 in the processing direction of the strip material 4 comprises, in particular, the following units: a feed unit 3, a first belt driver 27, a first belt storage unit 9, a first roller unit 28, a first belt drive device 5, a first tension measuring device 7, a first measuring unit 23 for measuring the strip thickness and / or strip speed, a first squeezing unit 29, a rolling device 6 for flexible rolling, a second squeezing unit 29 ', a second measuring unit 29 for measuring the strip thickness and / or strip speed, a second tension measuring device 7 ', a second belt drive device 5, a second roller unit 28, a second belt storage unit 9, a second belt driver 27 and / or a third measuring unit 23 ′′ for measuring the belt thickness and / or belt speed.
- the first tape drive device 5 can be embodied as in FIG. 1, to the description of which reference is made in this respect.
- the second belt drive device 5 ' can be designed as in FIG. 2, the description of which is referred to in this respect.
- the system according to FIG. 3 has a particularly short system length, which can in particular be less than 25 meters, due to the use of the Bandantriebsvor devices 5, 5 'with traction drives 10, 10' and drive control via the rotary motors 13, 13 ".
- a further processing unit can follow after the third measuring unit 23 ′′, for example a cutting or welding unit.
- FIG. 4 shows a system 2 in an alternative or supplementary embodiment. Individual units of the embodiment according to FIG. 4 correspond to those from FIG. 1, so that reference is made to the above description with regard to the similarities.
- the same or corresponding items are provided with the same reference numerals as in FIG. 1.
- a special feature of the present embodiment according to FIG. 4 is the use of a belt drive device 5 with traction drive units 10, 10 'in the machining direction of the strip material 4 behind the flexible rolling device 6.
- the belt drive device 5 corresponds in terms of structure and functionality to that of FIG reference is made to the above description.
- a tension measuring device 7 can be arranged in order to detect the outlet tensile force F7 acting on the strip material 4 on the outlet side.
- the drive power M3, M4 of the motors 13, 13 ′′ of the downstream belt drive device 5 ′′ can in particular be regulated on the basis of the run-out tensile force F7 determined by the tensile measuring device 7 ′′.
- the belt drive device 5 ′′ can be moved along the belt material 4 to a limited extent.
- the belt drive device 5 ′′ is supported against a stationary component 25, 25 ′′ via spring arrangements 24, 24 ′′.
- the spring arrangements 24, 24 ′′ allow elastic mobility of the belt drive device 5 ′′ in or against the belt direction R, which is shown schematically by the arrows P, P ′′.
- a separate spring arrangement 24, 24 ′′ is provided, one end of which is supported on a carrier 17, 17 ′′ of the drive unit 10, 10 ′′ and the other end is supported on the stationary component.
- only one spring system can be provided, which can be supported, for example, on a carrier of the belt drive device 5 ′′.
- a belt storage unit 9‘ can optionally be provided, in which the belt material 4 can be temporarily stored as it passes through.
- a further processing unit 26 can be provided behind the tape storage unit 9 ', for example a reel, a forming tool, in particular for the manufacture of pipes, and / or a cutting device for separating the tape material or a pipe made from it.
- system according to FIG. 1 and the system according to FIG. 4 can be arranged one behind the other and together form an overall system.
- FIGS. 5A and 5B which are described together, a belt drive device 5 is shown in a slightly modified embodiment which can be used in a position according to FIGS. 1, 2 and / or 3.
- the belt drive device shown in FIGS. 5A, 5B largely corresponds to the embodiment shown in FIGS. 1 to 3, to the description of which with regard to the commonalities reference is made in this respect.
- the same or corresponding details are provided with the same reference symbols as in the above figures.
- the traction drive units 10, 10 ' are stationary in the longitudinal direction R of the strip material 4 and movably held in the transverse direction H to the strip material on the carrier 17.
- the carrier 17 is designed as a scaffold or frame that is stationary on is placed in a part of the building.
- the traction drive units 10, 10 'each have a carrier 34, 34', on which the respective drive wheel 15, 15 ', deflection wheel 16, 16', traction means 14, 14 'and motor 15, 15' are mounted and accordingly a form unity.
- the drive wheels 15, 15 ' can be driven in rotation by the associated motor 13, 13' and transmit torque introduced by the motor to the respective traction means 14, 14 '.
- the pressing units 11, 1 T are also mounted on the carrier 17 or supported against it.
- a pressing unit 11, 1T is provided on each side of the carrier 17, which together can act on the traction drive units 10, 10 'towards one another or away from one another.
- each of the two pressing units 11, 11 ' acts on the upper support 34 on the one hand and on the lower support 34' on the other hand, in order to be able to act on them against one another in the vertical direction H and thus a pressing force F1, F2 on the between the traction drive units 10, 10 ' to be able to exercise through guided strip material 4.
- the supports 34, 34 ' are each adjustable in height, that is, guided in the transverse direction H in the frame 17 and fixed in the longitudinal direction L in the frame.
- the pressing units 11, 11 ' can be used as linear drives, in particular as hydraulic piston-cylinder units.
- FIG. 6 shows a tape storage unit 9 for a system 2 according to the invention in one embodiment.
- the present tape storage unit 9 is designed in the form of a vertical memory and comprises several rollers 30, 30 ', of which at least one is vertically movable.
- the vertical movement of the roller 30 ' changes the path that can be covered by the tape material between the infeed roller 31 and the outfeed roller 32.
- a strip store is formed in which the strip jam generated during flexible rolling can be buffered during the machining process.
- the tape storage unit 9 or the displacement paths of the displaceable roller (s) 30 ' is particularly designed so that a length compensation of at least 100 mm and / or up to 1000 mm is made possible.
- FIG. 7 shows a tape storage unit 9 for a system 2 according to the invention in a further embodiment.
- the tape storage unit 9 is designed in the present case in the form of a horizontal storage and comprises several rollers 30, 30 ', of which at least one is movable in a horizontal plane. The horizontal movement of the roller (s) 30 'changes the path that can be covered by the strip material between the infeed roller (s) 31 and outfeed roller (s) 32.
- a tape store is gebil det, in which the tape jam generated during flexible rolling can be buffered during the machining process.
- the tape storage unit 9 or the displacement paths of the displaceable roller (s) 30 ' are designed in particular in such a way that a length compensation of at least 100 mm and / or up to 1000 mm is made possible.
- a strip storage unit can be dispensed with on the outlet side, that is to say behind the flexible roller unit 6.
- the tape jam which is significantly less here, can optionally be buffered here by using a tape drive device 5 'according to FIG. 4 via the elasticity of the traction means arrangement in connection with the spring arrangement 24, 24'.
- the tape storage units 9 shown in FIGS. 6 and 7 can each be used in the systems according to FIGS. 1 to 5.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019132133.6A DE102019132133A1 (en) | 2019-11-27 | 2019-11-27 | PLANT AND PROCESS FOR FLEXIBLE ROLLING OF METALLIC STRIP MATERIAL |
PCT/EP2020/083761 WO2021105447A1 (en) | 2019-11-27 | 2020-11-27 | System and method for flexibly rolling metal strip material |
Publications (3)
Publication Number | Publication Date |
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EP4065295A1 true EP4065295A1 (en) | 2022-10-05 |
EP4065295C0 EP4065295C0 (en) | 2023-12-27 |
EP4065295B1 EP4065295B1 (en) | 2023-12-27 |
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ID=73642898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20816160.4A Active EP4065295B1 (en) | 2019-11-27 | 2020-11-27 | System and method for flexibly rolling metal strip material |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220410234A1 (en) |
EP (1) | EP4065295B1 (en) |
CN (1) | CN114867567A (en) |
DE (1) | DE102019132133A1 (en) |
WO (1) | WO2021105447A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU33867A1 (en) * | 1954-09-28 | |||
SU692650A1 (en) * | 1977-07-11 | 1979-10-25 | Карагандинский Филиал Особого Конструкторского Бюро Всесоюзного Научноисследовательского Института Автоматизации Черной Металлургии | Strip tension automatic regulator |
DE4009862A1 (en) * | 1990-03-28 | 1991-10-02 | Schloemann Siemag Ag | Device for packing or breaking strip during feeding - has conveyor-type elements exerting presence onto the strip via air cushions from metal containers |
JPH0977316A (en) * | 1995-09-20 | 1997-03-25 | Nippon Reliance Kk | Automatic web splicing device |
DE19846900C2 (en) * | 1998-10-12 | 2000-08-10 | Thyssenkrupp Stahl Ag | Method and device for producing a metal strip for tailored blanks |
DE29909850U1 (en) * | 1998-11-11 | 1999-09-30 | Umlauf Norbert | Elastic coating in device for pulling or braking metal strips |
DE10041280C2 (en) * | 2000-08-22 | 2003-03-06 | Muhr & Bender Kg | Method and device for flexible rolling of a metal strip |
DE10218959B4 (en) * | 2002-04-27 | 2011-07-28 | SMS Siemag Aktiengesellschaft, 40237 | Device for adjusting the maximum transferable tensile force ratio of a band in frictional engagement with an S-pulley pair |
DE10315357B4 (en) * | 2003-04-03 | 2005-05-25 | Muhr Und Bender Kg | Process for rolling and rolling plant for rolling metal strip |
FR2898523B1 (en) * | 2006-03-14 | 2009-02-27 | Alstom Power Conversion Sa | METHOD FOR ROLLING A TAPE |
AT509831B1 (en) * | 2010-04-30 | 2012-03-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR MINIMIZING THE STRAP TRAIN OF A ROLL |
EP2418031A1 (en) * | 2010-08-13 | 2012-02-15 | Siemens Aktiengesellschaft | Method for producing a metal strip using a casting rolling assembly and control and/or regulating device for a compound casting rolling assembly |
DE102015116619B4 (en) * | 2015-09-30 | 2018-11-29 | Thyssenkrupp Ag | Production of semi-finished products and structural components with regionally different material thicknesses |
DE102016104182B4 (en) * | 2016-03-08 | 2017-10-26 | Muhr Und Bender Kg | Apparatus and method for transporting metallic long material |
PL3566788T3 (en) * | 2018-05-08 | 2021-08-16 | Muhr Und Bender Kg | Installation and method for separating flexible rolled strip material |
-
2019
- 2019-11-27 DE DE102019132133.6A patent/DE102019132133A1/en active Pending
-
2020
- 2020-11-27 WO PCT/EP2020/083761 patent/WO2021105447A1/en unknown
- 2020-11-27 CN CN202080082365.7A patent/CN114867567A/en active Pending
- 2020-11-27 EP EP20816160.4A patent/EP4065295B1/en active Active
- 2020-11-27 US US17/780,120 patent/US20220410234A1/en active Pending
Also Published As
Publication number | Publication date |
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EP4065295C0 (en) | 2023-12-27 |
CN114867567A (en) | 2022-08-05 |
DE102019132133A1 (en) | 2021-05-27 |
EP4065295B1 (en) | 2023-12-27 |
WO2021105447A1 (en) | 2021-06-03 |
US20220410234A1 (en) | 2022-12-29 |
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