JP2012516238A - Apparatus and method for winding a strip with varying strip thickness, in particular a metal strip - Google Patents

Abstract

  In a device 1 for winding a strip 3 having a varying strip thickness, in particular a metal strip, in the form of a coil 2, comprising a structure for supplying a deformable material onto the strip 3 to be wound A device 1, characterized in that the structure comprises means 11, 22 for generating and supplying a flexible material, in particular an elastic material or a self-swelling material or a foamable material, to the coil 2. The invention further relates to a corresponding method.

Description

  The present invention relates to a band with varying band thickness, in particular a flat metal band or contoured metal band made of steel, with a structure for supplying a deformable material on the band to be wound The invention relates to an apparatus for winding a flexible rolled metal strip and / or a formed and rolled metal strip into the form of a coil.

  In particular, the present invention relates to winding a slit band. A slit band occurs when a band-shaped material, in particular a wide band of metal, is drawn from a coil and divided longitudinally, i.e. separated into a narrow band. The narrow slit band thus produced is then wound up on a common axis or a separate axis. It is advantageous if the composite coil results from a number of slit bands arranged side by side. Inserts inserted into the coil of the slit band to compensate for thickness deviations across the width of the band, which would result in a conical or curved surface when winding the slit band, especially in the band edge region Must.

  Even when the strip material is wound up from a longitudinal split device onto a continuous drum with a number of winding reels arranged side by side separated from each other by a circular press sheet, the strip thickness and coating thickness are also taken up. Results in a slightly more strongly wound coil with different slack. Uneven winding of the coil has a detrimental effect on its appearance, packaging, unwinding condition and friction between individual band windings. In order to avoid this drawback, it is known to wind paper tape or paperboard tape of suitable length between the slit bands. This is often done by manually inserting a paper tape into the coil slit between the wound band and the coil.

  Patent Document 1 discloses an apparatus for inserting an intermediate layer tape into a coil slit of a band material wound around a coil. In this case, the paper tape is carried toward the coil slit by a pair of drive rollers. In this case, the storage container for the paper tape is formed as a drum container containing the intermediate layer paper tape, and a pair of driving rollers driven by an electric motor are provided behind the tape running slit of the drum container. A tape dividing and punching device is provided behind the pair of drive rollers. Thereby, the intermediate layer tape is temporarily deformed into a stable air-supporting shape opened at the lower side at a high speed by the pair of driving rollers, and is accommodated in the coil slit so as to flow. The interlayer tape must be deformed by a roof-like molding of the drive roller to have a sufficiently stable shape supported by air. This shape allows the interlayer tape to be stored in the coil slit via a large free flight section. In this case, the acceleration action is used simultaneously with the air support action.

  The interlayer tape is removed from the laminated container containing the appropriate length of tape and either individually housed in a metal strip coil or pulled out of the tape storage coil and separated into the required single coil length each time. .

  Patent Document 2 describes a method for winding a large number of slit bands generated by dividing a band-shaped material in the longitudinal direction around a common coil shaft. In this method, the strip material has a thickness deviation across its width.

  This method is characterized in that the slit band is simultaneously wound up to form a composite coil, which has a deformable band insert extending across the width of all the slit bands that run side by side. In this case, the thickness of the insert is selected to be greater than the thickness deviation across the width of the strip material. When winding the slit band, the thicker slit band becomes stronger than the thinner slit band by applying a force in the radial direction of the composite coil against the uppermost coil layer and / or insert each time. Once pressed, the slit band is wound into a composite coil with a cylindrical envelope by corresponding deformation of the insert. In this method, an uncoated metal band or a coated metal band can be wound up as the band material. Preferably, paper, paperboard, synthetic resin, in particular paper impregnated with foam or anticorrosive, is used as the deformable insert.

  Furthermore, it is known to produce not only flat metal strips but also metal strips having a profile in the longitudinal and / or transverse direction. Patent Document 3 describes a method and a rolling mill for producing an arbitrary thickness profile across the width of a strip-shaped rolled material. At that time, the starting material is deformed almost only in the width direction by a large number of rolls arranged back and forth in the rolling direction. The roll allows appropriate local deformation depending on the desired cross-section. In this case, the penetration depth depends on the respective adjustment of the individual narrow rolls or rollers. The starting material is iron product or NE metal (non-ferrous metal). Cold deformation or hot deformation is used.

  Patent Document 4 discloses a method for flexible rolling of a metal strip. This method serves to produce flat metal strips having predetermined different strip thicknesses over length. In so doing, the roll gap is appropriately changed during the rolling process in order to achieve different band thicknesses over the length of the metal band. This can be done on the one hand by changing the deformation resistance of the material by heating or cooling the metal strip and by a modified corresponding springback of the rolling stand during the rolling process.

  Patent document 5 is related with the method for carrying out the flexible rolling of the metal strip. In this case, the metal strip is guided through the roll gap formed between the two work rolls during the rolling process, and during the rolling process to achieve different strip thicknesses over the length of the metal strip. The roll gap is adjusted appropriately. In so doing, during or immediately after all adjustment of the roll gap, the bending line of the work roll is controlled depending on the adjusted roll gap in order to produce the flatness of the metal strip.

German utility model No. 8006563U1 European Patent No. 0167795B1 German Patent Application Publication No. 19831882A1 German Patent Application Publication No. 19962754A1 European Patent Application No. 1074317A2

  The object of the present invention is to provide a strip, in particular a flat metal strip or a contoured metal strip, a flexible rolled metal strip and / or a shaped and rolled metal so as to easily produce a defined coil which is at least approximately cylindrical. It is to improve the method for winding the band.

  According to the invention, this object is provided in the method described at the outset by means for the structure to generate and supply a flexible material, in particular an elastic material or a self-swelling material or a foamable material, to the coil. It is solved by.

  In accordance with the present invention, in order to provide a solidified foam that is inserted into the coil so that an elastic material, in particular a completely round or almost round coil, is produced, it corresponds to the need for the band to be wound up, i.e. Appropriate materials are used in view of the surface properties of the strip and the expected deviation from the roundness of the coil being wound. Thereby, the structure according to the invention is particularly suitable for winding up metal slit strips made of steel, but other strip materials, for example strip materials made of synthetic resins such as thermosetting resins or thermoplastic resins Also suitable for. The material according to the invention acting as an insert protects the band surface and improves the rollability. The advantage of a uniformly wound coil is that it has good transportability and is easy for subsequent processing. Changes in the thickness of the strip in the longitudinal or transverse direction can be compensated at any time by changing the material application.

  Advantageous developments of the invention are evident from the dependent claims.

  In accordance with the present invention, it is advantageous if the material acting as an insert is applied to the uppermost layer of the coil each time or is sprayed or sprayed onto the surface of the coil from a nozzle arranged in a row. In that case, the material, for example foamable synthetic resin, is sprayed individually over different widths according to the desired application thickness over the width and over a predetermined area within the width of the coil. In the case of application with a doctor blade, the doctor blade is tilted with respect to the axis of rotation of the coil in order to compensate for the conical winding of the coil where the doctor blade is adjusted to the same distance over the entire width of the coil or is raised. It is done.

  The structure preferably extends over the entire width of the coil or over at least the majority of the width of the coil. In the latter case, only important areas where empirical heterogeneity increases are covered.

  In another advantageous embodiment of the invention, the material is taped onto the coil. This method, on the one hand, serves to save as little interlayer material as possible, and on the other hand, when applying a force acting on the coil from the radial direction, the material enters the area between the tapes, thereby creating the best round coil. Work to form.

  In another embodiment of the invention, the synthetic resin is advantageously applied onto the coil from an extruder.

  In order to increase elasticity, the synthetic resin forms a large number of tapes arranged side by side in connected layers or belt running directions on the coil, and each layer or tape has invaded bubbles. At the time of foaming, air or other gas is placed in a synthetic resin that cures according to the desired elasticity. Thereby, the insert layer is compressed by the weight of the material to be wound or by the action of the pressing force acting in the radial direction.

  In order to further improve the action of inserting the material layer, a measuring device is provided for measuring the thickness of the metal strip to be wound, and this measuring device controls the value of the thickness measured thereby. Transmit to. This control device generates a control amount from the signal indicating the thickness of the band, and controls the release of material from the nozzle, the addition of foaming agent, the addition of air, etc. according to the measured thickness of the metal band, or In the case of a doctor blade, align the posture of the doctor blade with the outer peripheral surface of the coil.

  The present invention further includes a rolling stand having a roll set and an adjusting device for adjusting a roll gap, an apparatus for rewinding a metal strip to be rolled, which is disposed in front of the rolling stand, and a rolling stand. Metal strip with variable strip thickness, in particular steel plate, in particular flat or contoured strip, flexible rolled metal strip, comprising a winding device as described above, arranged later The present invention also relates to a rolling mill for performing cold one-way rolling, hot one-way rolling, or reverse rolling on a formed and rolled metal strip. The metal strip can then have any cross-sectional shape in the longitudinal direction and / or the transverse direction. The band thickness may vary over length and / or width.

  In accordance with the present invention, the rolling mill corrects or controls the change in the mass flow rate of the rolling strip and the strip withdrawal speed depending on the change in the mass flow rate, and particularly when the zone acceleration changes during the change in the thickness profile of the strip. A control device for controlling the number of revolutions of the drive device for both winding devices is provided, which is provided with a higher-level control unit for controlling the belt pull-out. The strip can be rolled in an in-line casting facility and a rolling facility. An apparatus for winding the rolled band is disposed at the end of the facility.

  The invention further provides a strip with variable strip thickness, in particular a flat metal strip or a metal strip with a profile, flexible rolled, in which a deformable material is applied onto the coil during winding The present invention relates to a method for winding a metal strip and / or a formed and rolled metal strip into the form of a coil.

  This method is characterized in that the deformable material is applied to the surface of the band, in particular a metal band, by means of a nozzle or using at least one doctor blade. In accordance with the invention, a strip having a strip thickness that varies longitudinally and / or laterally can be wound up. In particular, a special profile can be inserted into the band.

  To compress the material so that a material having a thickness greater than the deviation in thickness of the metal strip is applied on the metal strip, followed by at least a substantially cylindrical composite coil of the metal strip and material. In particular, it is further advantageous if this method is configured in such a way that a force is applied to each uppermost end of the coil, in particular using a roll.

  It is particularly advantageous if the method is configured so that the material is swollen or foamed immediately before application or during application by the addition of additives.

  Various forms of thermal radiation can be used, particularly immediately before or during application, to aid swelling or foaming and / or curing.

  Next, embodiments of the present invention will be described in detail.

Fig. 2 shows an apparatus for spraying a foaming agent on the uppermost layer of a coil in a slit between the wound strip and the coil, which is movable laterally with respect to the strip wound in the form of a coil.

  A coating apparatus 1 (FIG.) For applying or spraying a foamable synthetic resin onto a coil 2 of a metal strip 3 includes a stationary lower structure 4. The lower structure includes two pairs of bearing stands 5 for the traveling wheel shaft 6. Two pairs of traveling rollers 7 are rotatably supported on the traveling wheel shaft. Each pair of running rollers 7 arranged in series serves to guide a u-shaped guide rail 8 connected to the support member 9 for the coating apparatus 1. The guide rail has a length that protrudes from the support member 9. The lower structure 4 is disposed outside the band region determined by the length of the reel shaft 10. Thereby, the device 1 can be moved in front of the reel shaft 10 selectively outside or within the band area. At the end of the winding process, the outer circumference of the coil 2 is maximized. At the beginning of the winding process, the jib 11 of the device 1 for spraying or applying synthetic resin is at the position 11 'of the dashed line in order to apply the material close to the surface of the metal strip 3, while the winding process At the end, the jib occupies position 11 ″.

  Since the support member 9 includes two swing shafts 12 for the swing lever 13, the apparatus 1 is disposed so as to be swingable with respect to the support member 9. This rocking lever can be rocked together by a hydraulic actuator 14. This actuator is rocked and held on a supporting joining plate 16 of the guide rail 8 via a bearing 15. The device 1 is pivotally connected to the free end of the swing lever 13 via a pair of joint plates 17 and a pivot pin 18, and is supported by a guide groove 20 of the support member 9 via a pair of rollers 19. .

  In order to place the jib 11 at a suitable distance from the surface of the band 3 or to temporarily separate the jib from the band coil 2 for cleaning purposes, for example, the coating device 1 was supported by a pair of joining plates 17. A telescopic cylindrical adjustment device 21 is provided. The jib 11 comprises a cartridge which is preferably replaceable for applying the application material. This coating material is preferably sprayed from one nozzle 22 or from a number of nozzles 22 arranged side by side in the axial direction of the reel shaft 10.

  Various substances necessary for producing the application medium are supplied from at least one supply hose 23. This supply is made in particular in connection with the gas under pressure in order to push the substance to be applied out of the cartridge. In addition, a radiator (not shown) can be provided near the nozzle 22. This heatsink promotes curing of the applied material.

  In order to produce a uniform coil structure, the granules can be placed in the coil 2 in conjunction with a liquid material, a foam material or a viscous material, in particular a synthetic resin, in particular in connection with a synthetic resin or an adhesive, for example in the form of dots. A quilted material with a partial cushion volume optimized for can be placed in the coil 2. If necessary, the cushion remains trapped. In this case, at least a predetermined region of the cushion is filled with an appropriate material or medium. This material or medium can exit the cushion under certain pressure or temperature conditions, especially after the end of the winding process.

  In accordance with the present invention, a pressing roller 24 (shown schematically) may be used. This pressing roller is disposed in the circumferential direction behind the foam or cushion material or granule supply portion to the coil 2 and presses the inserted material to make the outer periphery uniform.

DESCRIPTION OF SYMBOLS 1 Application | coating apparatus 2 Coil 3 Band | bowl 3 'Band | bowl 3 position 4 Lower structure 5 Bearing stand 6 Traveling wheel shaft 7 Traveling roller 8 Guide rail 9 Support member 10 Reel shaft 11 Jib 11' Jib 11 position 11 "Jib 11 position 12 Oscillating shaft 13 Oscillating lever 14 Actuator 15 Bearing 16 Supporting joint plate 17 Pair of joint plates 18 Pivoting pin 19 Pair of rollers 20 Guide groove 21 Adjusting device 22 Nozzle 23 Supply hose 24 Pressing roller

Claims (13)

Said strip (3), in particular a flat metal strip or contour made of steel, having a varying strip thickness, comprising a structure for supplying a deformable material on the strip (3) to be wound In a device (1) for winding a metal strip having, a flexible rolled metal strip and / or a formed and rolled metal strip into the form of a coil (2),
Device characterized in that the structure comprises means (11, 22) for generating and supplying flexible material, in particular elastic material or self-swelling material or foamable material, to the coil (2) (1).   Device (1) according to claim 1, characterized in that the material can be applied or sprayed or sprayable from a nozzle (22).   Device (1) according to claim 1 or 2, characterized in that the structure extends over the entire width of the coil (2) or over at least the majority of the width of the coil (2).   4. The device (1) according to any one of claims 1 to 3, characterized in that the material can be applied on the coil (2) as an elongated strip.   The device (1) according to any one of claims 1 to 4, characterized in that the synthetic resin can be applied onto the coil (2) from an extruder.   A number of tapes arranged in a layer in which the synthetic resin is connected or in a belt running direction are formed on the coil (2), and the layers or the tapes each have bubbles that have entered therein. The apparatus (1) as described in any one of -5.   The measuring device for measuring the thickness of the strip (3) to be wound is provided, and the control device corresponds to the measured thickness of the strip (3) and the nozzle 7. The device (1) according to any one of claims 1 to 6, characterized in that the release of the release material from (22) is controlled.   8. A pressing device, in particular a roll (24), applies a pressing force to the coil in order to compress the coil (2) while deforming the supplied material. (1). A rolling stand having a roll set and an adjusting device for adjusting the roll gap, an apparatus for rewinding the metal strip to be rolled, which is arranged in front of the rolling stand, and arranged after the rolling stand, A strip (3) with variable strip thickness, comprising a winding device (1) according to any one of the preceding claims, in particular a particularly flat metal strip or contour made of steel In a rolling mill for cold one-way rolling or hot one-way rolling or reverse rolling a metal band, a flexible rolled metal band and / or a formed and rolled metal band,
To correct or control the change in the mass flow rate of the strip and the strip withdrawal speed depending on this change in mass flow rate, and to control the strip withdrawal, especially when the strip acceleration changes during the change of the strip thickness profile. A rolling mill provided with a control device for controlling the rotational speed of the drive device of both winding devices (1), comprising a higher-order control unit. A strip of deformable material is applied on the coil (2) during winding, a strip (3) with varying strip thickness, in particular a flat strip of metal or a strip of metal, flexible rolled In a method for winding a rolled metal band and / or a formed and rolled metal band into the shape of the coil (2),
Method according to claim 1, characterized in that the deformable material is applied to the surface of the strip (3) by means of a nozzle or using at least one doctor blade.   The material having a thickness larger than the deviation of the thickness of the metal strip (3) is applied on the metal strip (3), and subsequently comprises the metal strip (3) and the material. In order to compress the material so that at least a substantially cylindrical composite coil (2) results, a force is applied to each uppermost end of the coil (2), in particular using a roll (24). 10. A method according to claim 9, characterized in that   12. Method according to claim 10 or 11, characterized in that the material is swollen or foamed immediately before or during application.   13. A method according to claim 12, characterized in that the material is swelled or foamed and / or cured by thermal radiation, particularly immediately before or during application.

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