EP3619333A1 - Apparatus for treating a metal strip - Google Patents

Apparatus for treating a metal strip

Info

Publication number
EP3619333A1
EP3619333A1 EP18728792.5A EP18728792A EP3619333A1 EP 3619333 A1 EP3619333 A1 EP 3619333A1 EP 18728792 A EP18728792 A EP 18728792A EP 3619333 A1 EP3619333 A1 EP 3619333A1
Authority
EP
European Patent Office
Prior art keywords
metal strip
magnets
blow
blower
stabilization
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
Application number
EP18728792.5A
Other languages
German (de)
French (fr)
Other versions
EP3619333B1 (en
Inventor
Pascal Fontaine
Dominique Fontaine
Thomas Daube
Michael Zielenbach
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.)
Fontaine Engineering und Maschinen GmbH
Original Assignee
Fontaine Engineering und Maschinen GmbH
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 Fontaine Engineering und Maschinen GmbH filed Critical Fontaine Engineering und Maschinen GmbH
Priority to SI201830276T priority Critical patent/SI3619333T1/en
Priority to PL18728792T priority patent/PL3619333T3/en
Publication of EP3619333A1 publication Critical patent/EP3619333A1/en
Application granted granted Critical
Publication of EP3619333B1 publication Critical patent/EP3619333B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material
    • C23C2/20—Strips; Plates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/51—Computer-controlled implementation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C23C2/524—Position of the substrate
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C23C2/524—Position of the substrate
    • C23C2/5245—Position of the substrate for reducing vibrations of the substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets

Definitions

  • the invention relates to a device for treating a metal strip, after this from a coating container with liquid Be Anlagenungsmatenal, z. As zinc has leaked.
  • Such devices are basically known in the art, such. From international patent application WO 2012/172648 A1 and German patent applications DE 10 2009 051 932 A1, DE 10 2007 045 202 A1 and DE 10 2008 039 244 A1. Specifically, these documents disclose a coating container which is filled with liquid coating material. For coating, the metal strip is passed through the container with the coating material. After leaving the coating container, the metal strip passes through a blow-off device or nozzle arranged above the coating container for blowing off excess parts of the still liquid coating material which adheres to the surface of the metal strip. Above the blower is supported by the blower supported electromagnetic stabilization device, also called Dynamic Electro Magnetic Coating Optimizer DEMCO, arranged to stabilize the belt after leaving the coating container and the blower.
  • a blow-off device or nozzle arranged above the coating container for blowing off excess parts of the still liquid coating material which adheres to the surface of the metal strip.
  • the blower supported electromagnetic stabilization device also called Dynamic Electro Magnetic Coating Optimizer DEMCO, arranged to stabilize
  • the electromagnetic stabilizing device generates electromagnetic forces, with the aid of which the metal strip is held centrally in a center plane of the entire device; a swinging of the metal strip during the passage of particular of the blower is at least reduced in this way.
  • the electromagnetic stabilization device is arranged quite far above the blow-off device.
  • the stabilizing effect exerted by the stabilizing device on the metal strip only reaches the blow-off device to a limited extent.
  • the forces to be generated by the stabilizer which are necessary to stabilize the metal strip in the region of the remote blower, are relatively large in the prior art. Accordingly, the energy required to operate the stabilizer is relatively high.
  • the stabilizing device is arranged above the nozzle carrier or the traverse, because thereby the access to the metal strip in the region of the nozzle carrier is made considerably more difficult.
  • the invention has the object of developing a known device for treating a metal strip to the effect that the efficiency of the machine is further increased.
  • Pot magnets in contrast to the usual magnets with horseshoe-shaped iron core have the advantage that they are built much more compact. Ie., their outer dimensions are significantly smaller compared to other magnets with iron core in design for the generation of an equal magnetic force. This in turn offers the advantage that the vertical distance between the stabilization device and the blow-off device can be further reduced and thus the efficiency of the machine can be further increased.
  • the magnetic coils have no or only a very small influence on the stripping behavior or the air flow of the blower.
  • a horizontal traverse also called nozzle carrier, mounted between two vertical uprights.
  • the blower On the Traverse the blower is attached, preferably below the traverse hanging on this.
  • the stabilization device is also preferably suspended below the traverse, but between the traverse and the blow-off device. The support of the stabilization device on the traverse is independent of the attachment of the blower to the crossbeam.
  • the arrangement of both the stabilizing device as well as the blower below the traverse has the advantage that the area above the traverse, and thus also a spanned by the Traverse slot for carrying the metal strip for an operator are very easily accessible.
  • a closer arrangement of the stabilizing device on the blower is made possible at a distance of 100-800 mm, preferably in a distance range of 100-550 mm or more preferably in a distance range of 100-450 mm. Due to the small distance from the stabilizer less Force are generated to stabilize the metal strip in the blower or nozzle. As a result, the energy requirement of the stabilization device is reduced and the device is more efficient overall.
  • each of the magnets is preferably associated with a separate distance sensor for preferably continuously detecting the distance of the respective magnet from the metal strip.
  • this distance sensor is arranged in each case in the middle of the coreless hollow pot coil. This offers the advantage that the distance sensors do not require any additional space in addition to the magnets within the electromagnetic stabilization device, as a result of which the entire stabilization device can in turn be made substantially more compact.
  • the distance sensor is thermally and mechanically protected in the eye of the pot coil. The thermal protection is because the distance sensor is not exposed to the direct heat radiation from the Zinkpot.
  • the distance sensor may be formed as an eddy current sensor or as an optical sensor.
  • the device further comprises a control device for regulating the position of the metal strip in the slot of the electromagnetic stabilization device to a predetermined desired center position, also called a pass line.
  • the regulation takes place in accordance with the distances between the magnets and the metal strip determined by the distance sensors by suitable variation of the current through the coils of the magnets.
  • the distance sensors in conjunction with the control device contribute to the fact that the metal strip can be held in the desired center position in the slot of the electromagnetic stabilization device, which in turn advantageously contributes to a more uniform coating thickness on the metal strip.
  • the individual fastening of the blow-off device and the stabilization device on the cross-beam takes place via independent displacement devices.
  • the blower is attached via a blow-off displacement device to the crossbar, but displaceable relative to the traverse.
  • the stabilization device is attached to the traverse via a stabilization displacement device, but displaceable relative to the traverse.
  • each individual one of the magnets of the electromagnetic stabilizing device is individually associated with a displacement device. This makes it possible for each individual magnet to be attached to the crossbeam and to be displaceable relative to the crossbeam.
  • the displacement devices each allow different degrees of freedom for the movement of the blower and the stabilizing device relative to the center plane of the device and also with respect to the metal strip.
  • the displacements enable a displacement of the blow-off device and the stabilization device relative to one another.
  • the displacement devices enable a displacement of the blow-off device, of the stabilization device as a whole or optionally also of the individual magnets of the stabilization device relative to one another.
  • the displacement devices each allow an individual displacement of the individual magnets relative to one another in the width direction of the metal strip, ie in the longitudinal direction of the crossbar.
  • the crossbeam is mounted vertically displaceably on the vertical uprights together with the blow-off and stabilizing devices attached thereto.
  • the vertical uprights can be moved together with the traverse parallel to each other in the horizontal plane.
  • the crossbeam is pivotally mounted on one of the vertical posts about a fixed pivot point (fixed side) in a horizontal plane and the crossbeam is loosely mounted on the other vertical post (loose side), pivoting of the crossbeams is also possible. se in the horizontal plane possible.
  • the magnets of the stabilizing device are arranged on both sides of the metal strip.
  • the tensile forces then exerted on the band by the magnets can each be set individually in such a way that they partially compensate one another or hold the band in the center position.
  • a separate control device which moves the magnets parallel to the plane of the metal strip but possibly also on both sides of the metal strip to each other so that the tensile forces generated by the offset magnet generate bending moments in the metal strip, which are formed so that troughs and Wave crests in the metal band are balanced as possible. This will make the metal band flat.
  • the blow-off device has an air gap in each case on both sides of the metal strip.
  • the device according to the invention is characterized by a collision protection device for retracting the electromagnetic stabilization device, in particular the individual magnets, preferably together with their housings, and preferably also for retracting the blow-off device. direction in the event of a fault.
  • the retraction of the stabilizing device and / or the blow-off then takes place away from the metal strip, in particular in a direction transverse to the plane of the metal strip, so that the metal strip as possible does not collide with the magnets or sensors.
  • a disturbance is, for example, a tape break or the recognition that a wrong tape is being coated.
  • FIG. 1 shows a widthwise view of the device according to the invention
  • FIG. 2 shows a cross section through the device according to the invention
  • FIGS. 3 and 4 show top views of the slots of the blow-off device according to the invention or of the electromagnetic stabilization device according to the invention, each with marking of the desired center position and different undesired actual positions of the metal strip.
  • FIG. 1 shows the device 100 according to the invention. It comprises two laterally arranged, vertically extending uprights 150, on which a traverse 130, also called a nozzle carrier, is mounted so as to be vertically movable, see the double arrows in FIG.
  • the device 100 is further pivotable in the horizontal plane. bar.
  • one of the two stands 150 is formed as a fixed side A, on which the traverse is pivotally mounted about a vertical axis of rotation.
  • the opposite stand is designed as a loose side B and supports the traverse only vertically.
  • the device 100 and in particular the crossmember 130 can be aligned symmetrically with respect to this by means of a stator displacing device 158 with an inclined metal band 200 by pivoting in the horizontal.
  • the broad sides of the traverse should always be aligned parallel to the metal strip and both have an equal distance to this.
  • blower hangs 1 10 or nozzle At the traverse 130 a blower hangs 1 10 or nozzle.
  • the coupling of the blow-off device 1 10 to the traverse 130 is not rigid, but via a blow-off displacement device 1 15, which is formed, the blower 1 10 relative to the crossbar 130 in the horizontal plane, d. H. in particular perpendicular to the center plane 160 of the device to relocate.
  • the blow-off displacement device 1 15 is designed to pivot the blower 1 10 about its own longitudinal axis L and so make suitable against the metal strip 200.
  • the stabilizing device 140 includes a plurality of individual magnets 144 on each side of the metal strip. Preferably, all these magnets are designed as a pot magnet. Preferably, each of these magnets is individually attached via a stabilizing displacement device 145 to the crossbar. These stabilizing displacement devices 145 allow for individual translatory displacement of each individual magnet in the horizontal plane relative to the traverse, ie perpendicular and parallel to the center plane 160 of the device 100, especially in the longitudinal direction of the traverse. In addition, the stabilizer displacement device 145 may also be configured to pivot the stabilizer 140 in the horizontal plane relative to the crossbar 130 and relative to the blower 110 about a vertical axis of rotation.
  • pot magnets are not limited to the arrangement between traverse and blower. Rather, the pot magnets can also be arranged above the traverse.
  • FIG. 2 shows the device according to the invention from FIG. 1 in a cross-sectional view.
  • the reference numeral 170 denotes a control device for controlling the stabilization displacement devices 145.
  • a coating container 300 can be seen, which is basically arranged underneath the device 100.
  • the metal strip 200 to be coated is guided in the transport direction R into the coating container 300 with the liquid coating material 310 and deflected there by means of a deflection roller 320 into the vertical. It then passes from bottom to top, first the blower 1 10 and subsequently the stabilizer 140.
  • the present invention provides in an advantageous embodiment that the distance d between the line of action of the maximum force F of the stabilizing device on the metal strip 200 and the air outlet gap 1 12th in a range of 100 to 800 mm, preferably in a range of 100 to 550 mm, or more preferably in a range of 100 to 450 mm.
  • the blower 1 10 biases a slot 122 through which the metal strip 200 is guided. With the aid of the blow-off device, excess coating material is blown off the surface of the metal strip 200.
  • Device 1 10 in a predetermined desired center position also called center plane 160 or the reference line reference position passes through, as symbolized in Figure 3 in the form of the solid line in the X direction.
  • This desired center position is characterized in particular by uniform distances or distance distributions to the inner edges of the slot 122 of the blower 1 10.
  • possible unwanted actual positions of the metal strip are also shown as dashed lines in FIG.
  • undesired actual layers for the metal strip 200 for example, consist in that it is twisted with respect to the desired central position or shifted in parallel in the Y direction.
  • FIG. 4 shows a third possible undesired actual position in which the metal strip 200 is opposite the desired center position in the X direction, ie. H. is shifted parallel in the width direction.
  • the electromagnetic stabilizing device 140 in turn has a slot 142, through which the metal strip 200 is also guided. Again, it is true that the metal strip 200 preferably passes through the slot 142 in a predetermined nominal center position 160, as shown in FIGS. 3 and 4. This is achieved in that the forces provided by the magnets of the electromagnetic stabilizer 140 act in a suitable manner on the metal strip 200. The same applies to the slot 142 and the target center position also intended there as with reference to FIGS. 3 and 4 for the slot 122 of the blower device 1 10.
  • a first detection device 154 is further arranged for detecting a deviation of the actual position of the metal strip 200 from a predetermined desired center position in the slot 122 of the blower 1 10.
  • the first detection means 154 only for detecting the actual position of the metal strip be educated.
  • a control device 180 is provided for regulating the actual position of the metal strip 200 to the predetermined desired center position 128 in the slot 122 of the blower, as explained above with reference to Figures 3 and 4.
  • This regulation can take place a) by displacing the blow-off device 1 10 by means of a blow-off displacement device 15 and / or b) by displacing the cross-beam 130 to which the blow-off device 1 10 hangs with the aid of a stator displacement device 158.
  • the regulation takes place in response to the detected deviation from actual to desired position. If the determination of the deviation of the actual position from the desired center position does not take place in the first detection device 154, it can also take place within the control device 180, for example.
  • the displacement of the blower 1 10 takes place in a horizontal plane transverse to the transport direction R of the metal strip in accordance with the detected deviation of the actual position of the metal strip from the predetermined desired center position in the slot 122 of the blower.
  • the blower 1 10 is displaced by means of the blow-off displacement device 15 15 so that the metal strip, the slot 122 of the blower again in the passes predetermined target center position 128.
  • the first detection device 154 is designed for this purpose so that it can preferably detect all three above-described with reference to Figures 3 and 4 deviating from the desired center position 128 actual positions of the metal strip 200.
  • the said displacement of the blow-off device 10 should not affect the electromagnetic stabilization device 140.
  • the control device 170 is designed to control the stabilization displacement devices 145 of the individual magnets 144 in such a way that the electromagnetic stabilization device 140 is not moved in the event of a displacement of the blow-off device 10 10 relative to a reference line reference position but remains at its original location can.
  • the stabilizer 140 and the Abblaseinhchtung 1 10 are decoupled from each other. Ie. they can be moved independently of one another and relative to one another with the aid of their respective displacement devices 145, 15.
  • the registration reference position 160 denotes a fixed-center plane of the device.
  • the desired center layers 128 relate to the slots 122, 142.
  • the control device 170 thus acts on the stabilizing Verheungseinhchtitch 145 so that in case of a displacement of the blower 1 10, the electrical stabilizers 140 preferably the exact opposite movement as the blower 110, that is, as a result, preferably remains in its original location.
  • the controller 170 may evaluate various situations.
  • the control device 170 may be configured to shift the electromagnetic stabilization device 140 or the individual magnets 144 in accordance with the deviation of the actual position of the metal strip from the predetermined desired center position of the metal strip in the slot 122 of FIG Blow-off device 1 10 perform.
  • control device 170 may be configured to perform the displacement of the electromagnetic stabilization device 140 or the individual magnets 144 in accordance with and in the opposite direction to the displacement of the blow-off device 120 detected by a second detection device 155.
  • the second detection device 155 serves to detect the displacement of the blow-off device 1 10 in relation to a reference line reference position 160 of the device 100.
  • control device 170 may be designed to shift the electromagnetic stabilization. in accordance with a detected deviation of the actual position of the metal strip from a predetermined nominal center position in the slot 142 of the electromagnetic stabilization device.
  • a third detection device 156 is provided for detecting the said deviation of the actual position of the metal strip from the predetermined desired center position in the slot 142 of the electromagnetic stabilization device 140.
  • each magnet 144 is assigned such a third detection device 156 as a distance sensor ,
  • these sensors are arranged in the pot magnet. They work, for example, optically or by means of induced eddy currents.
  • the first, second and third detection means 154, 155, 156 are each designed to detect, preferably, all conceivable deviations of an actual position of the metal strip from the desired set center position. These include, in particular, a (parallel) displacement of the metal strip in the x or y direction or a rotation, as explained above with reference to FIGS. 3 and 4. Accordingly, the stabilization and blow-off displacement means 145, 1 15 - with suitable control by the control device 180 or the control device 170 - formed, the blower 1 10 and the electromagnetic stabilizer 140 in the horizontal plane transverse to the transport direction R of the metal strip in any manner to move, in particular (to move parallel) or to rotate about a vertical axis of rotation to realize the passage of the metal strip in the desired center position.
  • the first and third detection means 154, 156 and optionally also the second detection means 155 can be realized in the form of one or more optical sensor devices 190.
  • the sensor device forms a structural unit for the mentioned detection devices.
  • one sensor device 190 per coil is provided in the electromagnetic stabilization device 140.
  • the measured values of all sensor devices are typically averaged.
  • the sensor device 190 can also generally be referred to as a distance detection device.
  • control of the actual position to the sol position or to the pass line by means of the controller 170 is effected individual variation of the currents through the coils in the magnet 144.

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Abstract

The invention relates to an apparatus for treating a metal strip after said metal strip has exited a coating tank having liquid coating material, such as zinc. Known apparatuses of said type have: a cleaning blower (110) arranged above the coating tank (300) and having an air outlet gap (112) for blowing out excess parts of the still liquid coating material (310) from the surface of the metal band (200) after passing the metal strip (200) through the coating tank (300) and an electromagnetic stabilization device (140) arranged above the blower (110) and having a plurality of individual magnets (144) for stabilization of the metal strip after exiting the coating tank (300) and the blower (110). In order to further increase the efficiency of the device, according to the invention, at least individual magnets (144) of the stabilization device (140) are designed as pot magnets having a pot coil.

Description

Vorrichtung zum Behandeln eines Metallbandes  Apparatus for treating a metal strip
Die Erfindung betrifft eine Vorrichtung zum Behandeln eines Metallbandes, nachdem dieses aus einem Beschichtungsbehälter mit flüssigem Beschichtungsmatenal, z. B. Zink, ausgetreten ist. The invention relates to a device for treating a metal strip, after this from a coating container with liquid Beschichtungsmatenal, z. As zinc has leaked.
Derartige Vorrichtungen sind im Stand der Technik grundsätzlich bekannt, so z. B. aus der internationalen Patentanmeldung WO 2012/172648 A1 und den deutschen Patentanmeldungen DE 10 2009 051 932 A1 , DE 10 2007 045 202 A1 und DE 10 2008 039 244 A1 . Konkret offenbaren diese Druckschriften einen Beschichtungsbehälter, welcher mit flüssigem Beschichtungsmaterial befüllt ist. Zum Beschichten wird das Metallband durch den Behälter mit dem Beschichtungsmaterial geleitet. Nach dem Verlassen des Beschichtungsbehälters durchläuft das Metallband eine oberhalb des Beschichtungsbehälters angeordnete Abblaseinrichtung bzw. Düse zum Abblasen von überschüssigen Teilen des noch flüssigen Be- schichtungsmaterials, welches an der Oberfläche des Metallbandes anhaftet. Oberhalb der Abblaseinrichtung ist eine von der Abblaseinrichtung gestützte elektromagnetische Stabilisierungseinrichtung, auch Dynamic Electro Magnetic Coating Optimizer DEMCO genannt, angeordnet zum Stabilisieren des Bandes nach Verlassen des Beschichtungsbehälters und der Abblaseinrichtung. Die elektromagnetische Stabilisierungseinrichtung generiert elektromagnetische Kräfte, mit deren Hilfe das Metallband mittig in einer Mittenebene der gesamten Vorrichtung gehalten wird; ein Schwingen des Metallbandes während des Durchlaufens von insbesondere der Abblaseinrichtung wird auf diese Weise zumindest reduziert. Bei diesen beschriebenen Konstruktionen besteht in der Realität jedoch der Nachteil, dass die elektromagnetische Stabilisierungseinrichtung recht weit oberhalb der Abblaseinrichtung angeordnet ist. Dies ist insofern nachteilig, als dass die von der Stabilisierungseinrichtung ausgeübte stabilisierende Wirkung auf das Metallband nur eingeschränkt bei der Abblaseinrichtung ankommt. Außerdem sind die von der Stabilisierungseinrichtung zu erzeugenden Kräfte, die notwendig sind, um das Metallband im Bereich der entfernten Abblaseinrichtung zu stabilisieren, im Stand der Technik verhältnismäßig groß. Dementsprechend ist auch der Energieaufwand zum Betreiben der Stabilisierungseinrichtung verhältnismäßig hoch. Schließlich ist es von Nachteil, dass die Stabilisierungseinrichtung oberhalb des Düsenträgers bzw. der Traverse angeordnet ist, weil dadurch der Zugang zu dem Metallband im Bereich des Düsenträgers deutlich erschwert wird. Such devices are basically known in the art, such. From international patent application WO 2012/172648 A1 and German patent applications DE 10 2009 051 932 A1, DE 10 2007 045 202 A1 and DE 10 2008 039 244 A1. Specifically, these documents disclose a coating container which is filled with liquid coating material. For coating, the metal strip is passed through the container with the coating material. After leaving the coating container, the metal strip passes through a blow-off device or nozzle arranged above the coating container for blowing off excess parts of the still liquid coating material which adheres to the surface of the metal strip. Above the blower is supported by the blower supported electromagnetic stabilization device, also called Dynamic Electro Magnetic Coating Optimizer DEMCO, arranged to stabilize the belt after leaving the coating container and the blower. The electromagnetic stabilizing device generates electromagnetic forces, with the aid of which the metal strip is held centrally in a center plane of the entire device; a swinging of the metal strip during the passage of particular of the blower is at least reduced in this way. In these constructions described, however, there is in reality the disadvantage that the electromagnetic stabilization device is arranged quite far above the blow-off device. This is disadvantageous in that the stabilizing effect exerted by the stabilizing device on the metal strip only reaches the blow-off device to a limited extent. In addition, the forces to be generated by the stabilizer, which are necessary to stabilize the metal strip in the region of the remote blower, are relatively large in the prior art. Accordingly, the energy required to operate the stabilizer is relatively high. Finally, it is disadvantageous that the stabilizing device is arranged above the nozzle carrier or the traverse, because thereby the access to the metal strip in the region of the nozzle carrier is made considerably more difficult.
Abhilfe schafft hier die Lehre gemäß dem deutschen Gebrauchsmuster DE 20 2015 104 823 U1 , welche vorsieht, die elektromagnetische Stabilisierungsvorrichtung zwischen der Traverse und der Abblaseinrichtung und damit noch näher an der Abblaseinrichtung anzuordnen. A remedy here is the teaching according to the German Utility Model DE 20 2015 104 823 U1, which provides for the electromagnetic stabilization device between the traverse and the blower and thus to arrange even closer to the blower.
Aus der DE 21 37 850 C3 ist es bekannt, Topfmagnete zur axial stabilisierten Lagerung einer rotierenden Welle zu verwenden. From DE 21 37 850 C3 it is known to use pot magnets for axially stabilized storage of a rotating shaft.
Der Erfindung liegt die Aufgabe zugrunde, eine bekannte Vorrichtung zum Behandeln eines Metallbandes dahingehend weiterzubilden, dass die Effizienz der Maschine noch weiter gesteigert wird. The invention has the object of developing a known device for treating a metal strip to the effect that the efficiency of the machine is further increased.
Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst. Bei der einleitend beschriebenen Vorrichtung wird dies erfindungsgemäß dadurch realisiert, dass zumindest einzelne der Magnete der Stabilisierungseinrichtung als Topfmagnete mit Topfspulen ausgebildet sind. This object is solved by the subject matter of patent claim 1. In the device described in the introduction, this is inventively realized in that at least some of the magnets of the stabilization device are designed as pot magnets with pot coils.
Topfmagnete bieten im Unterschied zu sonst üblichen Magneten mit hufeisenförmigem Eisenkern den Vorteil, dass sie wesentlich kompakter gebaut sind. D. h., ihre äußeren Abmessungen sind im Vergleich zu anderen Magneten mit Eisenkern bei Auslegung für die Erzeugung einer gleichgroßen Magnetkraft deutlich kleiner. Dies bietet wiederum den Vorteil, dass der vertikale Abstand zwischen der Stabilisierungseinrichtung und der Abblaseinrichtung noch weiter verringert und damit die Effizienz der Maschine noch weiter gesteigert werden kann. Dennoch haben aber die Magnetspulen keinen oder nur einen sehr geringen Einfluss auf das Abstreifverhalten bzw. die Luftströmung der Abblaseinrichtung. Pot magnets, in contrast to the usual magnets with horseshoe-shaped iron core have the advantage that they are built much more compact. Ie., their outer dimensions are significantly smaller compared to other magnets with iron core in design for the generation of an equal magnetic force. This in turn offers the advantage that the vertical distance between the stabilization device and the blow-off device can be further reduced and thus the efficiency of the machine can be further increased. However, the magnetic coils have no or only a very small influence on the stripping behavior or the air flow of the blower.
Dazu ist es gemäß einem ersten Ausführungsbeispiel vorteilhaft, wenn alle Magnete der Stabilisierungseinrichtung als Topfmagnete ausgebildet sind. For this purpose, it is advantageous according to a first embodiment, when all the magnets of the stabilization device are designed as pot magnets.
Gemäß einem weiteren Ausführungsbeispiel ist eine horizontale Traverse, auch Düsenträger genannt, zwischen zwei vertikalen Ständern montiert. An der Traverse ist die Abblaseinrichtung befestigt, vorzugsweise unterhalb der Traverse an dieser hängend. Auch die Stabilisierungseinrichtung ist vorzugsweise unterhalb der Traverse hängend an dieser befestigt, allerdings zwischen der Traverse und der Abblaseinrichtung. Die Halterung der Stabilisierungseinrichtung an der Traverse ist unabhängig von der Befestigung der Abblaseinrichtung an der Traverse. According to a further embodiment, a horizontal traverse, also called nozzle carrier, mounted between two vertical uprights. On the Traverse the blower is attached, preferably below the traverse hanging on this. The stabilization device is also preferably suspended below the traverse, but between the traverse and the blow-off device. The support of the stabilization device on the traverse is independent of the attachment of the blower to the crossbeam.
Die Anordnung von sowohl der Stabilisierungseinrichtung wie auch von der Abblaseinrichtung unterhalb der Traverse, bietet den Vorteil, dass der Bereich oberhalb der Traverse, und damit auch ein von der Traverse aufgespannter Schlitz zur Durchführung des Metallbandes für eine Bedienperson sehr einfach zugänglich sind. The arrangement of both the stabilizing device as well as the blower below the traverse, has the advantage that the area above the traverse, and thus also a spanned by the Traverse slot for carrying the metal strip for an operator are very easily accessible.
Durch die erfindungsgemäße Verwendung der Topfmagnete wird eine nähere Anordnung der Stabilisierungseinrichtung an der Abblaseinrichtung in einem Abstand von 100-800 mm, vorzugsweise in einem Abstandsbereich von 100-550 mm oder weiter vorzugsweise in einem Abstandsbereich von 100-450 mm ermöglicht. Aufgrund des geringen Abstandes muss von der Stabilisierungseinrichtung weniger Kraft generiert werden, um das Metallband im Bereich der Abblaseinrichtung bzw. Düse zu stabilisieren. Dadurch wird auch der Energiebedarf der Stabilisierungseinrichtung verringert und die Vorrichtung insgesamt effizienter. By the use according to the invention of the pot magnets, a closer arrangement of the stabilizing device on the blower is made possible at a distance of 100-800 mm, preferably in a distance range of 100-550 mm or more preferably in a distance range of 100-450 mm. Due to the small distance from the stabilizer less Force are generated to stabilize the metal strip in the blower or nozzle. As a result, the energy requirement of the stabilization device is reduced and the device is more efficient overall.
Gemäß einem weiteren Ausführungsbeispiel ist vorzugsweise jedem der Magnete ein eigener Abstandssensor zugeordnet zum vorzugsweise kontinuierlichen Erfassen des Abstandes des jeweiligen Magneten von dem Metallband. Vorteilhafterweise ist dieser Abstandssensor jeweils in der Mitte der kernlosen hohlen Topfspule angeordnet. Dies bietet den Vorteil, dass die Abstandssensoren keinen zusätzlichen Raum neben den Magneten innerhalb der elektromagnetischen Stabilisierungseinrichtung beanspruchen, wodurch die gesamte Stabilisierungseinrichtung wiederum wesentlich kompakter gebaut werden kann. Außerdem ist der Abstandssensor im Auge der Topfspule thermisch und mechanisch geschützt. Der thermische Schutz besteht deswegen, weil der Abstandssensor dort nicht der direkten Wärmestrahlung aus dem Zinkpot ausgesetzt ist. Der Abstandssensor kann als Wirbelstromsensor oder als optischer Sensor ausgebildet sein. According to a further embodiment, each of the magnets is preferably associated with a separate distance sensor for preferably continuously detecting the distance of the respective magnet from the metal strip. Advantageously, this distance sensor is arranged in each case in the middle of the coreless hollow pot coil. This offers the advantage that the distance sensors do not require any additional space in addition to the magnets within the electromagnetic stabilization device, as a result of which the entire stabilization device can in turn be made substantially more compact. In addition, the distance sensor is thermally and mechanically protected in the eye of the pot coil. The thermal protection is because the distance sensor is not exposed to the direct heat radiation from the Zinkpot. The distance sensor may be formed as an eddy current sensor or as an optical sensor.
Die Vorrichtung umfasst weiterhin eine Regelungseinrichtung zum Regeln der Position des Metallbandes in dem Schlitz der elektromagnetischen Stabilisierungseinrichtung auf eine vorgegebene Soll-Mittenlage, auch Passlinie genannt. Die Regelung erfolgt nach Maßgabe der von den Abstandssensoren ermittelten Abstände zwischen den Magneten und dem Metallband durch geeignete Variation des Stromes durch die Spulen der Magnete. Insofern tragen die Abstandssensoren in Verbindung mit der Regelungseinrichtung dazu bei, dass das Metallband in der Soll-Mittenlage in dem Schlitz der elektromagnetischen Stabilisierungseinrichtung gehalten werden kann, was wiederum vorteilhafterweise zu einer gleichmäßigeren Beschichtungsdicke auf dem Metallband beiträgt. The device further comprises a control device for regulating the position of the metal strip in the slot of the electromagnetic stabilization device to a predetermined desired center position, also called a pass line. The regulation takes place in accordance with the distances between the magnets and the metal strip determined by the distance sensors by suitable variation of the current through the coils of the magnets. In this respect, the distance sensors in conjunction with the control device contribute to the fact that the metal strip can be held in the desired center position in the slot of the electromagnetic stabilization device, which in turn advantageously contributes to a more uniform coating thickness on the metal strip.
Die jeweils individuelle Befestigung der Abblaseinrichtung und der Stabilisierungseinrichtung an der Traverse erfolgt über unabhängige Verlagerungseinrichtungen. Konkret ist die Abblaseinrichtung über eine Abblas-Verlagerungseinrichtung an der Traverse befestigt, aber relativ zu der Traverse verlagerbar. Weiterhin ist die Stabilisierungseinrichtung über eine Stabilisierungs-Verlagerungseinrichtung an der Traverse befestigt, aber relativ zu der Traverse verlagerbar. Gemäß der vorliegenden Erfindung ist nicht nur die Stabilisierungseinrichtung als Ganze relativ zu der Traverse verlagerbar, sondern vielmehr ist vorzugsweise jedem einzelnen der Magnete der elektromagnetischen Stabilisierungseinrichtung jeweils eine Verlagerungseinrichtung individuell zugeordnet. Damit ist es möglich, dass jeder einzelne Magnet an der Traverse befestigt und relativ zu der Traverse verschiebbar gelagert ist. Die Verlagerungseinrichtungen ermöglichen jeweils verschiedene Freiheitsgrade für die Bewegung der Abblaseinrichtung und der Stabilisierungseinrichtung gegenüber der Mittenebene der Vorrichtung und auch gegenüber dem Metallband. Die Verlagerungen ermöglichen insbesondere eine Verlagerung der Abblaseinrichtung und der Stabilisierungseinrichtung relativ zueinander. Die Verlagerungseinrichtungen ermöglichen insbesondere eine Verlagerung der Abblaseinrichtung, der Stabilisierungseinrichtung als Ganzes oder aber optional auch der einzelnen Magnete der Stabilisierungseinrichtung relativ zueinander. Weiter insbesondere ermöglichen die Verlagerungseinrichtungen jeweils eine individuelle Verschiebung der einzelnen Magnete relativ zueinander in Breitenrichtung des Metallbandes, d. h. in Längsrichtung der Traverse. The individual fastening of the blow-off device and the stabilization device on the cross-beam takes place via independent displacement devices. Specifically, the blower is attached via a blow-off displacement device to the crossbar, but displaceable relative to the traverse. Furthermore, the stabilization device is attached to the traverse via a stabilization displacement device, but displaceable relative to the traverse. According to the present invention, not only the stabilizing device as a whole is displaceable relative to the traverse, but rather preferably each individual one of the magnets of the electromagnetic stabilizing device is individually associated with a displacement device. This makes it possible for each individual magnet to be attached to the crossbeam and to be displaceable relative to the crossbeam. The displacement devices each allow different degrees of freedom for the movement of the blower and the stabilizing device relative to the center plane of the device and also with respect to the metal strip. In particular, the displacements enable a displacement of the blow-off device and the stabilization device relative to one another. In particular, the displacement devices enable a displacement of the blow-off device, of the stabilization device as a whole or optionally also of the individual magnets of the stabilization device relative to one another. In particular, the displacement devices each allow an individual displacement of the individual magnets relative to one another in the width direction of the metal strip, ie in the longitudinal direction of the crossbar.
Neben den durch die Abblas-Verlagerungseinrichtung und die Stabilisierungs- Verlagerungseinrichtung realisierten individuellen Freiheitsgraden für die jeweiligen Einrichtungen ist es vorteilhaft, dass die Traverse zusammen mit den daran angehängten Abblas- und Stabilisierungseinrichtungen an den vertikalen Ständern vertikal verschiebbar gelagert ist. Die vertikalen Ständer sind zusammen mit der Traverse parallel zueinander in der horizontalen Ebene verlagerbar. Weil die Traverse an einem der vertikalen Ständer um einen festen Drehpunkt (Festseite) in horizontaler Ebene schwenkbar gelagert ist und die Traverse an dem anderen vertikalen Ständer lose gelagert ist (Losseite), ist auch ein Verschwenken der Traver- se in der horizontalen Ebene möglich. Diese Freiheitsgrade der Traverse gelten für die Abblaseinrichtung und die Stabilisierungseinrichtung gleichermaßen, weil beide genannten Einrichtungen an der Traverse gehaltert sind. In addition to the individual degrees of freedom realized by the blow-off displacement device and the stabilization displacement device for the respective devices, it is advantageous that the crossbeam is mounted vertically displaceably on the vertical uprights together with the blow-off and stabilizing devices attached thereto. The vertical uprights can be moved together with the traverse parallel to each other in the horizontal plane. Because the crossbeam is pivotally mounted on one of the vertical posts about a fixed pivot point (fixed side) in a horizontal plane and the crossbeam is loosely mounted on the other vertical post (loose side), pivoting of the crossbeams is also possible. se in the horizontal plane possible. These degrees of freedom of the traverse apply equally to the blow-off device and the stabilization device, because both devices mentioned are mounted on the cross-member.
Mit den einzelnen Magneten können jeweils immer nur Zugkräfte auf das Band ausgeübt werden zum Heranziehen des Metallbandes in Richtung auf den Magneten hin. Um das Metallband dennoch in der gewünschten Soll-Mittenlage zu halten, ist es deshalb erforderlich, dass die Magnete der Stabilisierungseinrichtung auf beiden Seiten des Metallbandes angeordnet sind. Die dann jeweils von den Magneten ausgeübten Zugkräfte auf das Band können jeweils individuell so eingestellt werden, dass sie sich gegenseitig zum Teil kompensieren bzw. das Band in der Mittenlage halten. Die durch die erfindungsgemäße Stabilisierungs- Verlagerungseinrichtung gegebene Möglichkeit zur Verschiebung der einzelnen Magnete, insbesondere auch parallel zu der Ebene des Metallbandes bietet die Möglichkeit, dass auch Unebenheiten in dem Metallband ausgeglichen werden können. Dazu ist eine eigene Steuerungseinrichtung vorgesehen, welche die Magnete parallel zur Ebene des Metallbandes aber eventuell auch auf beiden Seiten des Metallbandes versetzt zueinander so verfährt, dass die von den versetzten Magneten erzeugten Zugkräfte in dem Metallband Biegemomente erzeugen, welche so ausgebildet sind, dass Wellentäler und Wellenberge in dem Metallband möglichst ausgeglichen werden. Dadurch wird das Metallband plan. With the individual magnets, only tensile forces can always be exerted on the band to pull the metal band towards the magnet. In order to keep the metal strip still in the desired desired center position, it is therefore necessary that the magnets of the stabilizing device are arranged on both sides of the metal strip. The tensile forces then exerted on the band by the magnets can each be set individually in such a way that they partially compensate one another or hold the band in the center position. Given by the stabilization displacement device according to the invention given possibility for displacement of the individual magnets, in particular also parallel to the plane of the metal strip offers the possibility that even bumps in the metal strip can be compensated. For this purpose, a separate control device is provided, which moves the magnets parallel to the plane of the metal strip but possibly also on both sides of the metal strip to each other so that the tensile forces generated by the offset magnet generate bending moments in the metal strip, which are formed so that troughs and Wave crests in the metal band are balanced as possible. This will make the metal band flat.
Vorteilhafterweise, insbesondere im Falle einer beidseitigen Beschichtung des Metallbandes weist die Abblaseinrichtung einen Luftspalt jeweils auf beiden Seiten des Metallbandes auf. Advantageously, in particular in the case of a coating on both sides of the metal strip, the blow-off device has an air gap in each case on both sides of the metal strip.
Schließlich ist die erfindungsgemäße Vorrichtung gekennzeichnet durch eine Kollisionsschutzeinrichtung zum Zurückziehen der elektromagnetischen Stabilisierungseinrichtung, insbesondere der einzelnen Magnete, vorzugsweise zusammen mit deren Gehäusen, und vorzugsweise auch zum Zurückziehen der Abblasein- richtung im Falle einer Störung. Das Zurückziehen der Stabilisierungseinrichtung und / oder der Abblaseinrichtung erfolgt dann weg von dem Metallband, insbesondere in einer Richtung quer zur Ebene des Metallbandes, so dass das Metallband möglichst nicht mit den Magneten oder Sensoren kollidiert. Eine Störung ist beispielsweise ein Bandriss oder das Erkennen, dass ein falsches Band beschichtet wird. Finally, the device according to the invention is characterized by a collision protection device for retracting the electromagnetic stabilization device, in particular the individual magnets, preferably together with their housings, and preferably also for retracting the blow-off device. direction in the event of a fault. The retraction of the stabilizing device and / or the blow-off then takes place away from the metal strip, in particular in a direction transverse to the plane of the metal strip, so that the metal strip as possible does not collide with the magnets or sensors. A disturbance is, for example, a tape break or the recognition that a wrong tape is being coated.
Der Beschreibung sind vier Figuren beigefügt, wobei The description is attached to four figures, wherein
Figur 1 eine Breitenansicht der erfindungsgemäßen Vorrichtung, FIG. 1 shows a widthwise view of the device according to the invention,
Figur 2 einen Querschnitt durch die erfindungsgemäße Vorrichtung, und Figuren Figure 2 shows a cross section through the device according to the invention, and figures
3 und 4 Draufsichten auf die Schlitze der erfindungsgemäßen Abblaseinrichtung oder der erfindungsgemäßen elektromagnetischen Stabilisierungseinrichtung, jeweils mit Markierung der Soll-Mittenlage und unterschiedlichen unerwünschten Ist-Lagen des Metallbandes zeigt.  FIGS. 3 and 4 show top views of the slots of the blow-off device according to the invention or of the electromagnetic stabilization device according to the invention, each with marking of the desired center position and different undesired actual positions of the metal strip.
Die Erfindung wird nachfolgend in Form von Ausführungsbeispielen unter Bezugnahme auf die genannten Figuren detailliert beschrieben. In allen Figuren sind gleiche technische Elemente mit gleichen Bezugszeichen bezeichnet. The invention will now be described in detail in the form of embodiments with reference to said figures. In all figures, the same technical elements are designated by the same reference numerals.
Figur 1 zeigt die erfindungsgemäße Vorrichtung 100. Sie umfasst zwei seitlich angeordnete, sich vertikal erstreckende Ständer 150, an denen eine Traverse 130, auch Düsenträger genannt, vertikal verfahrbar gelagert ist, siehe die Doppelpfeile in Figur 1 . Die Vorrichtung 100 ist weiterhin in der horizontalen Ebene schwenk- bar. Zu diesem Zweck ist einer der beiden Ständer 150 als Festseite A ausgebildet, auf welcher die Traverse um eine vertikale Drehachse schwenkbar gelagert ist. Der gegenüberliegende Ständer ist dagegen als Losseite B ausgebildet und stützt die Traverse lediglich vertikal ab. Durch diese Ausbildung der Ständer als Fest- und Losseite kann die Vorrichtung 100 und insbesondere die Traverse 130 mit Hilfe einer Ständer-Verlagerungseinrichtung 158 bei schräg stehendem Metallband 200 durch Schwenken in der Horizontalen symmetrisch zu diesem ausgerichtet werden. Im Ergebnis sollen die Breitseiten der Traverse immer parallel zum Metallband ausgerichtet sein und beide einen gleichen Abstand zu diesem aufweisen. FIG. 1 shows the device 100 according to the invention. It comprises two laterally arranged, vertically extending uprights 150, on which a traverse 130, also called a nozzle carrier, is mounted so as to be vertically movable, see the double arrows in FIG. The device 100 is further pivotable in the horizontal plane. bar. For this purpose, one of the two stands 150 is formed as a fixed side A, on which the traverse is pivotally mounted about a vertical axis of rotation. The opposite stand, however, is designed as a loose side B and supports the traverse only vertically. As a result of this design of the uprights as a fixed and loose side, the device 100 and in particular the crossmember 130 can be aligned symmetrically with respect to this by means of a stator displacing device 158 with an inclined metal band 200 by pivoting in the horizontal. As a result, the broad sides of the traverse should always be aligned parallel to the metal strip and both have an equal distance to this.
An der Traverse 130 hängt eine Abblaseinrichtung 1 10 bzw. Düse. Die Ankopp- lung der Abblaseinrichtung 1 10 an die Traverse 130 erfolgt nicht starr, sondern über eine Abblas-Verlagerungseinrichtung 1 15, welche ausgebildet ist, die Abblaseinrichtung 1 10 relativ zu der Traverse 130 in der horizontalen Ebene, d. h. insbesondere senkrecht zu der Mittenebene 160 der Vorrichtung zu verlagern. Außerdem ist die Abblas-Verlagerungseinrichtung 1 15 ausgebildet, die Abblaseinrichtung 1 10 um ihre eigene Längsachse L zu schwenken und so geeignet gegen das Metallband 200 anzustellen. At the traverse 130 a blower hangs 1 10 or nozzle. The coupling of the blow-off device 1 10 to the traverse 130 is not rigid, but via a blow-off displacement device 1 15, which is formed, the blower 1 10 relative to the crossbar 130 in the horizontal plane, d. H. in particular perpendicular to the center plane 160 of the device to relocate. In addition, the blow-off displacement device 1 15 is designed to pivot the blower 1 10 about its own longitudinal axis L and so make suitable against the metal strip 200.
Zwischen der Traverse 130 und der Abblaseinrichtung 1 10 ist eine Stabilisierungseinrichtung 140, auch Dynamic Electro Magnetic Coating Optimizer DEMCO genannt, an der Traverse befestigt. Die Stabilisierungseinnchtung 140 umfasst eine Mehrzahl von einzelnen Magneten 144 auf jeder Seite des Metallbandes. Vorzugsweise sind alle diese Magnete als Topfmagnet ausgebildet. Vorzugsweise ist jeder dieser Magnete individuell über eine Stabilisierungs- Verlagerungseinrichtung 145 an der Traverse befestigt. Diese Stabilisierungs- Verlagerungseinrichtungen 145 ermöglichen eine individuelle, translato sche Verlagerung jedes einzelnen Magneten in der horizontalen Ebene relativ zu der Traverse, d. h. senkrecht und parallel zu der Mittenebene 160 der Vorrichtung 100, insbesondere in Längsrichtung der Traverse. Zusätzlich kann die Stabilisierungs- Verlagerungseinrichtung 145 auch ausgebildet sein, die Stabilisierungseinrichtung 140 in der horizontalen Ebene relativ zu der Traverse 130 und relativ zu der Abblaseinrichtung 1 10 um eine senkrechte Drehachse zu verschwenken. Between the Traverse 130 and the blower 1 10 is a stabilizer 140, also called Dynamic Electro Magnetic Coating Optimizer DEMCO, attached to the crossmember. The stabilizing device 140 includes a plurality of individual magnets 144 on each side of the metal strip. Preferably, all these magnets are designed as a pot magnet. Preferably, each of these magnets is individually attached via a stabilizing displacement device 145 to the crossbar. These stabilizing displacement devices 145 allow for individual translatory displacement of each individual magnet in the horizontal plane relative to the traverse, ie perpendicular and parallel to the center plane 160 of the device 100, especially in the longitudinal direction of the traverse. In addition, the stabilizer displacement device 145 may also be configured to pivot the stabilizer 140 in the horizontal plane relative to the crossbar 130 and relative to the blower 110 about a vertical axis of rotation.
Die Verwendung der Topfmagnete ist nicht auf die Anordnung zwischen Traverse und Abblaseinrichtung beschränkt. Vielmehr können die Topfmagnete auch oberhalb der Traverse angeordnet sein. The use of the pot magnets is not limited to the arrangement between traverse and blower. Rather, the pot magnets can also be arranged above the traverse.
Figur 2 zeigt die erfindungsgemäße Vorrichtung aus Figur 1 in einer Querschnittsansicht. Das Bezugszeichen 170 bezeichnet eine Steuereinrichtung zur Ansteuerung der Stabilisierungs-Verlagerungseinrichtungen 145. Es ist ein Be- schichtungsbehälter 300 zu erkennen, welcher grundsätzlich unterhalb der Vorrichtung 100 angeordnet ist. Das zu beschichtende Metallband 200 wird in Transportrichtung R in den Beschichtungsbehälter 300 mit dem flüssigen Beschich- tungsmaterial 310 geleitet und dort mit Hilfe einer Umlenkrolle 320 in die Vertikale umgelenkt. Es durchläuft dann von unten nach oben zunächst die Abblaseinrichtung 1 10 sowie nachfolgend die Stabilisierungseinrichtung 140. Die vorliegende Erfindung sieht in einer vorteilhaften Ausgestaltung vor, dass der Abstand d zwischen der Wirkungslinie der maximalen Kraft F der Stabilisierungseinrichtung auf das Metallband 200 und dem Luftaustrittsspalt 1 12 in einem Bereich von 100 bis 800 mm, vorzugsweise in einem Bereich von 100 bis 550 mm oder weiter vorzugsweise in einem Bereich von 100 - 450 mm liegt. FIG. 2 shows the device according to the invention from FIG. 1 in a cross-sectional view. The reference numeral 170 denotes a control device for controlling the stabilization displacement devices 145. A coating container 300 can be seen, which is basically arranged underneath the device 100. The metal strip 200 to be coated is guided in the transport direction R into the coating container 300 with the liquid coating material 310 and deflected there by means of a deflection roller 320 into the vertical. It then passes from bottom to top, first the blower 1 10 and subsequently the stabilizer 140. The present invention provides in an advantageous embodiment that the distance d between the line of action of the maximum force F of the stabilizing device on the metal strip 200 and the air outlet gap 1 12th in a range of 100 to 800 mm, preferably in a range of 100 to 550 mm, or more preferably in a range of 100 to 450 mm.
Die Abblaseinrichtung 1 10 spannt einen Schlitz 122 auf, durch welchen das Metallband 200 geführt ist. Mit Hilfe der Abblaseinrichtung wird überschüssiges Be- schichtungsmaterial von der Oberfläche des Metallbandes 200 abgeblasen. The blower 1 10 biases a slot 122 through which the metal strip 200 is guided. With the aid of the blow-off device, excess coating material is blown off the surface of the metal strip 200.
Damit das Abblasen auf der Ober- und Unterseite des Metallbandes 200 gleichmäßig erfolgt, ist es wichtig, dass das Metallband 200 den Schlitz 122 der Abblas- einrichtung 1 10 in einer vorgegebenen Soll-Mittenlage, auch Mittenebene 160 o- der Passlinien-Referenzposition genannt, durchläuft, wie sie in Figur 3 in Form der durchgezogenen Linie in X-Richtung symbolisiert ist. Diese Soll-Mittenlage zeichnet sich insbesondere durch gleichmäßige Abstände bzw. Abstandsverteilungen zu den inneren Rändern des Schlitzes 122 der Abblaseinrichtung 1 10 aus. Neben der gewünschten vorgegebenen Soll-Mittenlage 128 sind in Figur 3 auch mögliche unerwünschte Ist-Lagen des Metallbandes als gestrichelte Linien eingezeichnet. So bestehen unerwünschte Ist-Lagen für das Metallband 200 beispielsweise darin, dass es gegenüber der Soll-Mittenlage verdreht oder in Y-Richtung parallel verschoben ist. In order for the blowing on the top and bottom sides of the metal strip 200 to take place uniformly, it is important for the metal strip 200 to hold the slot 122 of the blow-off section. Device 1 10 in a predetermined desired center position, also called center plane 160 or the reference line reference position passes through, as symbolized in Figure 3 in the form of the solid line in the X direction. This desired center position is characterized in particular by uniform distances or distance distributions to the inner edges of the slot 122 of the blower 1 10. In addition to the desired predetermined desired center position 128, possible unwanted actual positions of the metal strip are also shown as dashed lines in FIG. Thus, undesired actual layers for the metal strip 200, for example, consist in that it is twisted with respect to the desired central position or shifted in parallel in the Y direction.
Figur 4 zeigt eine dritte mögliche unerwünschte Ist-Lage, in welcher das Metallband 200 gegenüber der Soll-Mittenlage in X-Richtung, d. h. in Breitenrichtung parallel verschoben ist. FIG. 4 shows a third possible undesired actual position in which the metal strip 200 is opposite the desired center position in the X direction, ie. H. is shifted parallel in the width direction.
Die elektromagnetische Stabilisierungseinrichtung 140 weist ihrerseits einen Schlitz 142 auf, durch den das Metallband 200 ebenfalls geführt ist. Auch hier gilt, dass das Metallband 200 den Schlitz 142 vorzugsweise in einer vorgegebenen Soll-Mittenlage 160 durchläuft, wie in Figuren 3 und 4 gezeigt. Dies wird dadurch erreicht, dass die durch die Magnete der elektromagnetischen Stabilisierungseinrichtung 140 bereitgestellten Kräfte in geeigneter Weise auf das Metallband 200 einwirken. Für den Schlitz 142 und die auch dort angestrebte Soll-Mittenlage gilt dasselbe wie zuvor unter Bezugnahme auf die Figuren 3 und 4 für den Schlitz 122 der Abblaseinrichtung 1 10 Gesagte. The electromagnetic stabilizing device 140 in turn has a slot 142, through which the metal strip 200 is also guided. Again, it is true that the metal strip 200 preferably passes through the slot 142 in a predetermined nominal center position 160, as shown in FIGS. 3 and 4. This is achieved in that the forces provided by the magnets of the electromagnetic stabilizer 140 act in a suitable manner on the metal strip 200. The same applies to the slot 142 and the target center position also intended there as with reference to FIGS. 3 and 4 for the slot 122 of the blower device 1 10.
Zwischen der Stabilisierungseinrichtung 140 und der Abblaseinrichtung 1 10 ist weiterhin eine erste Erfassungseinrichtung 154 angeordnet zum Erfassen einer Abweichung der Ist-Lage des Metallbandes 200 von einer vorgegebenen Soll- Mittenlage in dem Schlitz 122 der Abblaseinrichtung 1 10. Alternativ kann die erste Erfassungseinrichtung 154 auch nur zur Erfassung der Ist-Lage des Metallbandes ausgebildet sein. Es ist weiterhin eine Regelungseinrichtung 180 vorgesehen zum Regeln der Ist-Lage des Metallbandes 200 auf die vorgegebene Soll-Mittenlage 128 in dem Schlitz 122 der Abblaseinrichtung, wie oben unter Bezugnahme auf die Figuren 3 und 4 erläutert. Diese Regelung kann erfolgen a) durch Verlagerung der Abblaseinrichtung 1 10 mit Hilfe einer Abblas-Verlagerungseinrichtung 1 15 und/oder b) durch Verlagern der Traverse 130, an der die Abblaseinrichtung 1 10 hängt, mit Hilfe einer Ständer- Verlagerungseinrichtung 158. Die Regelung erfolgt im Ansprechen auf die erfasste Abweichung von Ist- zu Soll-Lage. Wenn die Ermittlung der Abweichung der Ist-Lage von der Soll-Mittenlage nicht in der ersten Erfassungseinrichtung 154 erfolgt, kann sie zum Beispiel auch innerhalb der Regelungseinrichtung 180 erfolgen. Die Verlagerung der Abblaseinrichtung 1 10 erfolgt in horizontaler Ebene quer zur Transportrichtung R des Metallbandes nach Maßgabe der erfassten Abweichung der Ist-Lage des Metallbandes von der vorgegebenen Soll-Mittenlage in dem Schlitz 122 der Abblaseinrichtung. Anders ausgedrückt: Wird festgestellt, dass das Metallband 200 den Schlitz 122 nicht in der Soll-Mittenlage 128 durchläuft, so wird die Abblaseinrichtung 1 10 mit Hilfe der Abblas-Verlagerungseinrichtung 1 15 derart verlagert, dass das Metallband den Schlitz 122 der Abblaseinrichtung wieder in der vorgegebenen Soll-Mittenlage 128 durchläuft. Die erste Erfassungseinrichtung 154 ist zu diesem Zweck so ausgebildet, dass sie vorzugsweise alle drei oben unter Bezugnahme auf die Figuren 3 und 4 beschriebenen von der Soll-Mittenlage 128 abweichenden Ist-Lagen des Metallbandes 200 erfassen kann. Between the stabilizing device 140 and the blow-off device 1 10, a first detection device 154 is further arranged for detecting a deviation of the actual position of the metal strip 200 from a predetermined desired center position in the slot 122 of the blower 1 10. Alternatively, the first detection means 154 only for detecting the actual position of the metal strip be educated. Furthermore, a control device 180 is provided for regulating the actual position of the metal strip 200 to the predetermined desired center position 128 in the slot 122 of the blower, as explained above with reference to Figures 3 and 4. This regulation can take place a) by displacing the blow-off device 1 10 by means of a blow-off displacement device 15 and / or b) by displacing the cross-beam 130 to which the blow-off device 1 10 hangs with the aid of a stator displacement device 158. The regulation takes place in response to the detected deviation from actual to desired position. If the determination of the deviation of the actual position from the desired center position does not take place in the first detection device 154, it can also take place within the control device 180, for example. The displacement of the blower 1 10 takes place in a horizontal plane transverse to the transport direction R of the metal strip in accordance with the detected deviation of the actual position of the metal strip from the predetermined desired center position in the slot 122 of the blower. In other words, if it is determined that the metal strip 200 does not pass through the slot 122 in the desired center position 128, the blower 1 10 is displaced by means of the blow-off displacement device 15 15 so that the metal strip, the slot 122 of the blower again in the passes predetermined target center position 128. The first detection device 154 is designed for this purpose so that it can preferably detect all three above-described with reference to Figures 3 and 4 deviating from the desired center position 128 actual positions of the metal strip 200.
Die besagte Verlagerung der Abblaseinrichtung 1 10 soll sich nicht auf die elektromagnetische Stabilisierungseinrichtung 140 auswirken. Zu diesem Zweck ist die Steuereinrichtung 170 ausgebildet, die Stabilisierungs-Verlagerungseinrichtungen 145 der einzelnen Magnete 144 derart anzusteuern, dass die elektromagnetische Stabilisierungseinrichtung 140 im Falle einer Verlagerung der Abblaseinrichtung 1 10 gegenüber einer Passlinien-Referenzposition nicht mit verfahren wird, sondern an ihrem ursprünglichen Ort verbleiben kann. Die Stabilisierungseinrichtung 140 und die Abblaseinhchtung 1 10 sind voneinander entkoppelt. D. h. sie können mit Hilfe ihrer jeweiligen Verlagerungseinrichtungen 145, 1 15 unabhängig voneinander und relativ zueinander verfahren werden. Die Passlinien-Referenzposition 160 bezeichnet eine fest-definierte Mittenebene der Vorrichtung. Demgegenüber beziehen sich die Soll-Mittenlagen 128 auf die Schlitze 122, 142. Die Steuereinrichtung 170 wirkt demnach derart auf die Stabilisierungs- Verlagerungseinhchtungen 145 ein, dass im Falle einer Verlagerung der Abblaseinrichtung 1 10 die elektrische Stabilisierungseinrichtungen 140 vorzugsweise die genau gegenteilige Bewegung wie die Abblaseinrichtung 110 macht, das heißt, im Ergebnis vorzugsweise an ihrem ursprünglichen Ort verbleibt. The said displacement of the blow-off device 10 should not affect the electromagnetic stabilization device 140. For this purpose, the control device 170 is designed to control the stabilization displacement devices 145 of the individual magnets 144 in such a way that the electromagnetic stabilization device 140 is not moved in the event of a displacement of the blow-off device 10 10 relative to a reference line reference position but remains at its original location can. The stabilizer 140 and the Abblaseinhchtung 1 10 are decoupled from each other. Ie. they can be moved independently of one another and relative to one another with the aid of their respective displacement devices 145, 15. The registration reference position 160 denotes a fixed-center plane of the device. In contrast, the desired center layers 128 relate to the slots 122, 142. The control device 170 thus acts on the stabilizing Verheungseinhchtungen 145 so that in case of a displacement of the blower 1 10, the electrical stabilizers 140 preferably the exact opposite movement as the blower 110, that is, as a result, preferably remains in its original location.
Um diese spezielle Art der Ansteuerung für die Stabilisierungs- Verlagerungseinrichtungen 145 zu realisieren, kann die Steuerungseinrichtung 170 verschiedene Situationen auswerten. Zum einen kann die Steuerungseinrichtung 170 ausgebildet sein, die Verlagerung der elektromagnetischen Stabilisierungseinrichtung 140 bzw. der einzelnen Magnete 144 nach Maßgabe der von der ersten Erfassungseinrichtung 154 erfassten Abweichung der Ist-Lage des Metallbandes von der vorgegebenen Soll-Mittenlage des Metallbandes in dem Schlitz 122 der Abblaseinrichtung 1 10 durchzuführen. In order to realize this particular type of drive for the stabilization relocators 145, the controller 170 may evaluate various situations. On the one hand, the control device 170 may be configured to shift the electromagnetic stabilization device 140 or the individual magnets 144 in accordance with the deviation of the actual position of the metal strip from the predetermined desired center position of the metal strip in the slot 122 of FIG Blow-off device 1 10 perform.
Alternativ oder zusätzlich kann die Steuereinrichtung 170 ausgebildet sein, das Verlagern der elektromagnetischen Stabilisierungseinrichtung 140 bzw. der einzelnen Magnete 144 nach Maßgabe und in entgegengesetzter Richtung zu der von einer zweiten Erfassungseinrichtung 155 erfassten Verlagerung der Abblaseinrichtung 120 durchzuführen. Die zweite Erfassungseinrichtung 155 dient zum Erfassen der Verlagerung der Abblaseinrichtung 1 10 gegenüber einer Passlinien- Referenzposition 160 der Vorrichtung 100. Alternatively or additionally, the control device 170 may be configured to perform the displacement of the electromagnetic stabilization device 140 or the individual magnets 144 in accordance with and in the opposite direction to the displacement of the blow-off device 120 detected by a second detection device 155. The second detection device 155 serves to detect the displacement of the blow-off device 1 10 in relation to a reference line reference position 160 of the device 100.
Schließlich kann gemäß einer weiteren Alternative oder ergänzend die Steuereinrichtung 170 ausgebildet sein, das Verlagern der elektromagnetischen Stabilisie- rungseinrichtung 140 bzw. der einzelnen Magnete 144 nach Maßgabe einer er- fassten Abweichung der Ist-Lage des Metallbandes von einer vorgegebenen Soll- Mittenlage in dem Schlitz 142 der elektromagnetischen Stabilisierungseinrichtung zu veranlassen. Voraussetzung dafür ist, dass eine dritte Erfassungseinrichtung 156 vorhanden ist zum Erfassen der besagten Abweichung der Ist-Lage des Metallbandes von der vorgegebenen Soll-Mittenlage in dem Schlitz 142 der elektromagnetischen Stabilisierungseinrichtung 140. Vorzugsweise ist jedem Magneten 144 eine solche dritte Erfassungseinnchtung 156 als Abstandssensor zugeordnet. Vorzugsweise sind diese Sensoren in den Topfmagneten angeordnet. Sie arbeiten beispielsweise optisch oder mit Hilfe von induzierten Wirbelströmen. Finally, according to a further alternative or in addition, the control device 170 may be designed to shift the electromagnetic stabilization. in accordance with a detected deviation of the actual position of the metal strip from a predetermined nominal center position in the slot 142 of the electromagnetic stabilization device. The prerequisite for this is that a third detection device 156 is provided for detecting the said deviation of the actual position of the metal strip from the predetermined desired center position in the slot 142 of the electromagnetic stabilization device 140. Preferably, each magnet 144 is assigned such a third detection device 156 as a distance sensor , Preferably, these sensors are arranged in the pot magnet. They work, for example, optically or by means of induced eddy currents.
Die erste, zweite und dritte Erfassungseinnchtung 154, 155, 156 sind jeweils ausgebildet, vorzugsweise alle denkbaren Abweichungen einer Ist-Lage des Metallbandes von der gewünschten Soll-Mittenlage zu erkennen. Dazu zählen insbesondere eine (Parallel-)Verschiebung des Metallbandes in x- oder y-Richtung oder eine Verdrehung, wie oben unter Bezugnahme auf die Figuren 3 und 4 erläutert. Entsprechend sind die Stabilisierungs- und Abblas-Verlagerungseinrichtung 145, 1 15 - bei geeigneter Ansteuerung durch die Regelungseinrichtung 180 oder die Steuerungseinrichtung 170 - ausgebildet, die Abblaseinrichtung 1 10 und die elektromagnetische Stabilisierungseinrichtung 140 in der horizontalen Ebene quer zur Transportrichtung R des Metallbandes in beliebiger Weise zu verfahren, insbesondere (parallel) zu verschieben oder um eine vertikale Drehachse zu verdrehen, um das Durchlaufen des Metallbandes in der Soll-Mittenlage zu realisieren. The first, second and third detection means 154, 155, 156 are each designed to detect, preferably, all conceivable deviations of an actual position of the metal strip from the desired set center position. These include, in particular, a (parallel) displacement of the metal strip in the x or y direction or a rotation, as explained above with reference to FIGS. 3 and 4. Accordingly, the stabilization and blow-off displacement means 145, 1 15 - with suitable control by the control device 180 or the control device 170 - formed, the blower 1 10 and the electromagnetic stabilizer 140 in the horizontal plane transverse to the transport direction R of the metal strip in any manner to move, in particular (to move parallel) or to rotate about a vertical axis of rotation to realize the passage of the metal strip in the desired center position.
Die erste und dritte Erfassungseinrichtung 154, 156 sowie optional zusätzlich auch die zweite Erfassungseinrichtung 155 können in Form einer oder mehrerer optischen Sensoreinrichtungen 190 realisiert sein. Insofern bildet die Sensoreinrichtung eine bauliche Einheit für die genannten Erfassungseinrichtungen. Vorzugsweise ist eine Sensoreinrichtung 190 je Spule in der elektromagnetischen Stabilisierungseinrichtung 140 vorgesehen. Die Messwerte aller Sensoreinrichtungen werden typischerweise gemittelt. Die Sensoreinrichtung 190 kann auch allgemein als Abstandserfassungseinrichtung bezeichnet werden. The first and third detection means 154, 156 and optionally also the second detection means 155 can be realized in the form of one or more optical sensor devices 190. In this respect, the sensor device forms a structural unit for the mentioned detection devices. Preferably, one sensor device 190 per coil is provided in the electromagnetic stabilization device 140. The measured values of all sensor devices are typically averaged. The sensor device 190 can also generally be referred to as a distance detection device.
Bei Feststellung einer Abweichung der Ist- von der Soll-Lage des Metallbandes innerhalb der elektromagnetischen Stabilisierungseinrichtung 140, insbesondere mit Hilfe der dritten Erfassungseinrichtung 156 erfolgt mit Hilfe der Steuerung 170 eine Regelung der Ist- auf die Sol-Lage bzw. auf die Passlinie durch geeignete individuelle Variation der Ströme durch die Spulen in den Magneten 144. Upon detection of a deviation of the actual position from the desired position of the metal strip within the electromagnetic stabilizing device 140, in particular with the aid of the third detection device 156, control of the actual position to the sol position or to the pass line by means of the controller 170 is effected individual variation of the currents through the coils in the magnet 144.

Claims

Patentansprüche claims
1. Vorrichtung (100) zum Behandeln eines Metallbandes (200), nachdem dieses aus einem Beschichtungsbehälter (300) mit flüssigem Beschichtungsmaterial (310) ausgetreten ist, wobei die Vorrichtung aufweist: A device (100) for treating a metal strip (200) after it has exited a coating container (300) with liquid coating material (310), the device comprising:
Eine oberhalb des Beschichtungsbehälters (300) angeordnete Abblaseinrichtung (1 10) mit einem Luftaustrittsspalt (1 12) zum Abblasen von überschüssigen Teilen des noch flüssigen Beschichtungsmaterials (310) von der Oberfläche des Metallbandes (200) nach dem Durchleiten des Metallbandes (200) durch den Beschichtungsbehälter (300);  An above the coating container (300) arranged blower (1 10) having an air outlet gap (1 12) for blowing off excess parts of the still liquid coating material (310) from the surface of the metal strip (200) after passing the metal strip (200) through the Coating container (300);
eine oberhalb der Abblaseinrichtung (1 10) angeordnete elektromagnetische Stabilisierungseinrichtung (140) mit einer Mehrzahl von einzelnen Magneten (144) zur Stabilisierung des Metallbandes nach dem Verlassen des Beschichtungsbehälters (300) und der Abblaseinrichtung (1 10);  an electromagnetic stabilization device (140) arranged above the blow-off device (110) with a plurality of individual magnets (144) for stabilizing the metal strip after leaving the coating container (300) and the blow-off device (110);
dadurch gekennzeichnet, dass  characterized in that
zumindest einzelne der Magnete (144) der Stabilisierungseinrichtung (140) als Topfmagnete mit einer Topfspule ausgebildet sind.  at least some of the magnets (144) of the stabilizing device (140) are designed as pot magnets with a pot coil.
2. Vorrichtung (100) nach Anspruch 1 , 2. Device (100) according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
alle Magnete (144) der Stabilisierungseinrichtung (140) als Topfmagnete ausgebildet sind.  all magnets (144) of the stabilization device (140) are designed as pot magnets.
3. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, 3. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
eine horizontale Traverse (130) zwischen zwei vertikalen seitlichen Ständern (150) montiert ist,  a horizontal crossbar (130) is mounted between two vertical side uprights (150),
die Abblaseinrichtung (140) unterhalb der Traverse (130) hängend an dieser befestigt ist; und die Stabilisierungseinrichtung (140) zwischen der Traverse (130) und der Abblaseinrichtung (1 10) - unabhängig von der Abbiaseinrichtung - an der Traverse hängend an dieser befestigt ist. the blow-off device (140) below the cross-member (130) is attached to this hanging; and the stabilization device (140) between the traverse (130) and the blower (1 10) - regardless of the Abbiaseinrichtung - attached to the traverse hanging on this.
4. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, 4. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Stabilisierungseinrichtung (140) derart oberhalb der Abblaseinrichtung (110) angeordnet ist, dass der Abstand (d) zwischen der Wirkungslinie der maximalen Kraft (F) der Stabilisierungseinrichtung auf das Metallband (300) und dem Luftaustrittsspalt (142) in einem Bereich von 100 - 800 mm, vorzugsweise in einem Bereich von 00 - 550 mm oder weiter vorzugsweise in einem Bereich von 100 - 450 mm liegt.  the stabilizing device (140) is arranged above the blower (110) such that the distance (d) between the line of action of the maximum force (F) of the stabilizing device on the metal strip (300) and the air outlet gap (142) is in a range of 100 - 800 mm, preferably in a range of 00 - 550 mm or more preferably in a range of 100 - 450 mm.
5. Vorrichtung ( 00) nach einem der vorangegangenen Ansprüche, 5. Device (00) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
vorzugsweise jedem der Magnete ein eigener Abstandssensor (156) zugeordnet ist zum vorzugsweise kontinuierlichen Erfassen des Abstandes des jeweiligen Magneten von dem Metallband.  Preferably, each of the magnets is associated with a separate distance sensor (156) for preferably continuously detecting the distance of the respective magnet from the metal strip.
6. Vorrichtung ( 00) nach Anspruch 5, 6. Device (00) according to claim 5,
dadurch gekennzeichnet, dass  characterized in that
der Abstandssensor jeweils in der Mitte der Topfspule angeordnet ist.  the distance sensor is arranged in each case in the middle of the pot coil.
7. Vorrichtung ( 00) nach Anspruch 5 oder 6, 7. Device (00) according to claim 5 or 6,
gekennzeichnet durch eine Regelungseinrichtung (180) zum Regeln der Position des Metallbandes (200) in dem Schlitz (142) der elektromagnetischen Stabilisierungseinrichtung auf eine vorgegebene Soll-Mittenlage nach Maßgabe der von den Abstandssensoren (190) der Magnete ermittelten Abstände zwischen den Magneten und dem Metallband durch geeignete Variation des Stromes durch die Spulen der Magnete. characterized by a regulating device (180) for regulating the position of the metal strip (200) in the slot (142) of the electromagnetic stabilizing device to a predetermined desired center position in accordance with the distances between the magnets and the metal strip determined by the distance sensors (190) of the magnets by suitable variation of the current through the coils of the magnets.
8. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, gekennzeichnet durch 8. Device (100) according to one of the preceding claims, characterized by
eine vorzugsweise jedem der Magnete individuell zugeordnete Verlagerungseinrichtung (145), mit welcher der jeweilige Magnet an der Traverse ( 30) und relativ zu der Traverse verschiebbar gelagert ist.  a preferably each of the magnets individually associated displacement device (145), with which the respective magnet is displaceably mounted on the crossmember (30) and relative to the crossmember.
9. Vorrichtung (100) nach Anspruch 8, 9. Device (100) according to claim 8,
dadurch gekennzeichnet, dass  characterized in that
die Verlagerungseinrichtung (145) insbesondere ausgebildet ist, den ihr zugeordneten Magneten (144) parallel zur Ebene des Metallbandes (200), weiter insbesondere in Breitenrichtung des Metallbandes zu verschieben.  the displacement device (145) is in particular designed to displace its associated magnet (144) parallel to the plane of the metal strip (200), in particular in the width direction of the metal strip.
10. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, 10. Device (100) according to one of the preceding claims,
gekennzeichnet durch  marked by
eine Kollisionsschutzeinrichtung zum Zurückziehen der elektromagnetischen Stabilisierungseinrichtung (140), insbesondere der Magnete, vorzugsweise zusammen mit deren Gehäusen, und vorzugsweise auch der Abblaseinrichtung - im Falle einer Störung - in einer Richtung senkrecht zur Ebene des Metallbandes.  a collision protection device for retracting the electromagnetic stabilization device (140), in particular the magnets, preferably together with their housings, and preferably also the blow-off device - in the event of a fault - in a direction perpendicular to the plane of the metal strip.
1 1. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, 1 1. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Abblaseinrichtung (1 10) einen Luftspalt für beide Seiten des Metallbandes aufweist.  the blow-off device (1 10) has an air gap for both sides of the metal strip.
12. Vorrichtung (100) nach einem der vorangegangenen Ansprüche, 12. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Magnete ( 44) der elektromagnetischen Stabilisierungseinrichtung (140) auf beiden Seiten des Metallbandes (200) angeordnet sind.  the magnets (44) of the electromagnetic stabilization device (140) are arranged on both sides of the metal strip (200).
EP18728792.5A 2017-05-04 2018-04-11 Device for treating a metal strip Active EP3619333B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201830276T SI3619333T1 (en) 2017-05-04 2018-04-11 Device for treating a metal strip
PL18728792T PL3619333T3 (en) 2017-05-04 2018-04-11 Device for treating a metal strip

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017109559.4A DE102017109559B3 (en) 2017-05-04 2017-05-04 Apparatus for treating a metal strip
PCT/EP2018/059227 WO2018202389A1 (en) 2017-05-04 2018-04-11 Apparatus for treating a metal strip

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EP3619333A1 true EP3619333A1 (en) 2020-03-11
EP3619333B1 EP3619333B1 (en) 2021-02-24

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JP (1) JP7109474B2 (en)
KR (1) KR102314296B1 (en)
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CA (1) CA3062106C (en)
DE (1) DE102017109559B3 (en)
ES (1) ES2858325T3 (en)
HU (1) HUE053945T2 (en)
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PL (1) PL3619333T3 (en)
PT (1) PT3619333T (en)
RU (1) RU2724269C1 (en)
SI (1) SI3619333T1 (en)
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EP3910089A1 (en) * 2020-05-12 2021-11-17 Clecim Sas Installation for coating a travelling metal product

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Publication number Publication date
RU2724269C1 (en) 2020-06-22
EP3619333B1 (en) 2021-02-24
DE102017109559B3 (en) 2018-07-26
US20210189540A1 (en) 2021-06-24
JP7109474B2 (en) 2022-07-29
WO2018202389A1 (en) 2018-11-08
KR20200003133A (en) 2020-01-08
PL3619333T3 (en) 2021-07-19
KR102314296B1 (en) 2021-10-20
HUE053945T2 (en) 2021-08-30
ZA201907021B (en) 2021-04-28
ES2858325T3 (en) 2021-09-30
PT3619333T (en) 2021-03-31
CA3062106C (en) 2022-12-06
CA3062106A1 (en) 2019-10-31
SI3619333T1 (en) 2021-06-30
BR112019022777A2 (en) 2020-05-19
MX2019012948A (en) 2019-12-16
US11549168B2 (en) 2023-01-10
JP2020518728A (en) 2020-06-25
CN110785509B (en) 2021-11-16
CN110785509A (en) 2020-02-11

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