Reel system for a combined casting-rolling system and method for operating the reel system

Abstract

The invention relates to a reel system (45) for a combined casting-rolling system (10) and a method for operating the reel system (45), wherein the reel system (45) comprises at least one first mandrel (90), a first coil unit (95), a first strip feed (100), a second strip feed (105), a strip store (110) and a drive unit (115), wherein the drive unit (115) has a component carrier (150) and a drive motor (145) that is connected to the component carrier (150), wherein the first coil unit (95) and the second strip feed (105) are secured to the component carrier (150) and the drive motor (145) is designed to rotate the component carrier (150), the first coil unit (95) and the second strip feed (105) about the winding axis (140), wherein the strip store (110) is arranged radially on the outside of the component carrier (150) and the first coil unit (95), wherein the finished rolled strip (80) is supplied via the first strip feed (100), wherein the strip store (110) is designed to wind the finished rolled strip (80) supplied via the first strip feed (100) to form an intermediate ring (305), wherein the second strip feed (105) is designed to unwind the finished rolled strip (80) wound into the intermediate ring (305) radially inside the intermediate ring (305) and to supply same to the first coil unit (95), and wherein the first coil unit (95) reels the finished rolled strip (80) on the first mandrel (90) to form a coil (85).

Description

[0001] Description

[0002] Coiling system for a combined casting and rolling plant and method for operating the coiling system

[0003] The invention relates to a reel system according to claim 1 and a method for operating the reel system according to claim 10.

[0004] From EP 1 039 978 B1 a carousel reel with two reel mandrels for winding up strip-finished goods, in particular a steel strip, is known.

[0005] From JP S5448663 A1 a method is known for winding a tape made of a material that can be continuously taken up from the outside while the tape is taken up and wound on a winding machine to produce split reels.

[0006] It is an object of the invention to provide an improved coiling system for a combined casting and rolling plant for coiling a thin-walled sheet and an improved method for operating the coiling system.

[0007] This object is achieved by means of a reel system according to claim 1 and by means of a method for operating the reel system according to claim 10. Advantageous embodiments are specified in the dependent claims.

[0008] An improved coiling system for a combined casting and rolling plant for coiling a thin-walled sheet can be provided in that the coiling system has at least a first mandrel, a first coiling device, a first strip feeder, a second strip feeder, a strip accumulator, and a drive device. The first mandrel extends along a winding axis. The drive device has a component carrier and a drive motor connected to the component carrier. The first coiling device and the second strip feeder are fastened to the component carrier, and the drive motor is configured to rotate the component carrier, the first coiling device, and the second strip feeder about the first winding axis. The strip accumulator is arranged radially outwardly of the component carrier and the first coiling device. The first strip feeder is arranged radially outwardly of the strip accumulator.The finished rolled strip can be fed into the coiling system via the first strip feeder along a conveying direction of the finished rolled strip. The first strip feeder is designed to transport the finished rolled strip to the strip accumulator. The strip accumulator is designed to wind the finished rolled strip fed via the first strip feeder into an intermediate coil. The second strip feeder is designed to unwind the finished rolled strip wound into the intermediate coil radially inside the intermediate coil and feed it to the first coiling device. The first coiling device is designed to wind the finished rolled strip onto the first mandrel into a coil.

[0009] This design has the advantage that the coiling speed at which the first coiling device coils the finished rolled strip into the coil is independent of the first strip speed at which the finished rolled strip is transported in the first strip feed. This also has the advantage that the finished rolled strip can be particularly thin-walled and can be transported out of the finishing rolling mill at a high first strip speed. The coiling system also allows a high-speed finished rolled strip to be coiled, so that the combined casting and rolling plant has a particularly high throughput.

[0010] The first strip feed can be pivoted about a second pivot axis between a start-up position and a conveying position. The second pivot axis is aligned parallel to the central axis. The first strip feed is designed to convey the finished rolled strip along a straight line. The second strip feed is designed to guide the finished rolled strip radially inwards along a second straight line in the direction of the first coiling device. In the start-up position, the first strip feed and the second strip feed are aligned in alignment with one another so that the first straight line and the second straight line overlap. In the conveying position, the first strip feed is pivoted relative to the start-up position such that the first straight line is aligned tangentially to the winding axis.This design has the advantage that it is particularly easy to switch between a thick finished rolled strip and a thin finished rolled strip and that the thin finished rolled strip can be particularly easily wound into the first coiling device.

[0011] In a further embodiment, the first strip accumulator has at least one first roller arrangement with a plurality of support rollers arranged offset in the circumferential direction around the winding axis. The support rollers are arranged on a first circular path around the winding axis. The support rollers roll on the finished-rolled strip. The strip accumulator is designed to wind the finished-rolled strip, guided along the support rollers, on a second circular path around the winding axis to the intermediate ring. This configuration has the advantage of ensuring a high circumferential speed of the intermediate ring, which can rotate around the winding axis at the strip speed of the supplied finished-rolled strip. Furthermore, blocking of the intermediate ring on the strip accumulator is prevented.

[0012] In a further embodiment, the strip storage device has a carrier unit with at least a first carrier, a carrier joint, and a second carrier. The carrier joint connects the first carrier to the second carrier. The second carrier can be pivoted relative to the first carrier between a first position and a second position. A first sub-assembly of the first roller arrangement is arranged on the first carrier, and a second sub-assembly of the first roller arrangement is arranged on the second carrier. In the first position, the first carrier and the second carrier delimit an annular gap on the outside, in which the intermediate ring can be arranged. In the second position, the second carrier is pivoted away from the first carrier. This configuration has the advantage that the reel system can be wound up particularly easily.

[0013] In a further embodiment, the first carrier and / or the second carrier are partially annular. The first carrier and / or the second carrier are arranged in the first position on a common third circular path. Additionally or alternatively, the first carrier encloses an angle of approximately 160° up to and including 180°. Additionally or alternatively, the second carrier encloses a second angle of approximately 160° up to and including 180°. By enclosing the annular gap circumferentially with the two-part carrier, a high strip speed of the thin-walled finished rolled strip can be supported. In particular, the finished rolled strip can be held by the strip accumulator due to a centrifugal force acting on the finished rolled strip. On the inside, no further rollers or holding elements are required to hold the finished rolled strip in the annular gap. This makes the strip accumulator particularly simple and cost-effective.

[0014] In a further embodiment, the strip storage device comprises a carrier unit with at least a first carrier and an adjusting device, wherein the adjusting device connects the support roller to the first carrier. The adjusting device is designed to move the support roller between a first radial position and a second radial position arranged radially outward from the first radial position. This ensures that the intermediate ring can be designed in multiple layers, wherein preferably with each layer wound onto the intermediate ring from the outside, the adjusting device moves the support roller radially outward in order to provide sufficient installation space for the increasing thickness of the intermediate ring.

[0015] In a further embodiment, the coiling system has at least one second cutting device, in particular a shear. The cutting device is arranged radially between the first coiling device and the second strip feed. The second cutting device is attached to the component carrier. The second cutting device is designed to cut the finished rolled strip. This configuration has the advantage that the finished rolled strip is cut shortly before coiling, when the coil is full.

[0016] In a further embodiment, the strip accumulator has a first input roll, wherein the finish-rolled strip can be introduced into the strip accumulator from the first strip feed at the first input roll. The first input roll is designed to deflect the finish-rolled strip in its conveying direction. The first input roll has a first magnetic device designed to hold the finish-rolled strip at the first input roll by means of a first magnetic connection. This design has the advantage that an annular configuration of the intermediate ring in the strip accumulator is ensured. Furthermore, the first magnetic connection prevents the finish-rolled strip from being accidentally lifted off the input side of the strip accumulator. Alternatively, it would also be possible to arrange the first magnetic device at a distance from the first input roll, for example between the first input roll and the second roll.For example, the first magnet arrangement can be integrated on and / or into a guide of the first tape feed.

[0017] In a further embodiment, the second strip feed has a second input roller, wherein the second input roller is arranged on the input side of the second strip guide with respect to the conveying direction of the finished-rolled strip. The second input roller is designed to deflect the finished-rolled strip in its conveying direction from the strip accumulator toward the first coiling device. The second input roller has a second magnetic device, wherein the second magnetic device is designed to hold the finished-rolled strip at the second input roller by means of a second magnetic connection. This configuration has the advantage that the finished-rolled strip can be deflected at a particularly large angle at the second input roller.It has been recognized that an improved method, preferably for operating a coiling system described above, can be provided in that a finished rolled strip is fed into the coiling system via a first strip feed of the coiling system, wherein the first strip feed transports the finished rolled strip to a strip storage device of the coiling system, wherein the strip storage device winds the finished rolled strip into an intermediate ring which extends around a winding axis, wherein a second strip feed unwinds the finished rolled strip from the intermediate ring on a side radially opposite the first strip feed and guides it in the direction of a first coiling device of the coiling system, wherein the first coiling device winds the finished rolled strip into a coil.

[0018] This design has the advantage that the winding speed at which the finished rolled strip is wound onto the first mandrel by the strip accumulator is essentially independent of the initial strip speed at which the finished rolled strip is fed into the coiling system. This also allows the finished coil to be removed from the coiling system, while the finished rolled strip can continue to be fed into the strip accumulator without interrupting production or the delivery of the finished rolled strip from the combined casting and rolling plant.

[0019] In a further embodiment, the finished-rolled strip is guided from the first strip feeder to the intermediate ring from the radial outside, and the strip accumulator winds the finished-rolled strip onto the intermediate ring from the radial outside, relative to the winding axis. This design has the advantage that the intermediate ring can be arranged between the first strip feeder and the second strip feeder in the radial direction, thus reducing the space required for the strip accumulator.

[0020] In a further embodiment, the first coiling device and the first strip feed are rotated around the winding axis during the coiling of the finished rolled strip on the first mandrel. This configuration has the advantage that the coiling system can also be designed with high masses, and the coiling process does not need to be interrupted while the component carrier is accelerated by the drive motor together with the first coiling device of the second strip feed to a first circumferential speed of the intermediate ring.

[0021] In another embodiment, the finished coil is removed from the first mandrel while the finished rolled strip is simultaneously wound into the intermediate ring. This design has the advantage of ensuring uninterrupted operation of the combined casting and rolling plant with the coiling system.

[0022] In a further embodiment, the finished-rolled strip wound into the intermediate ring rotates around the winding axis in the strip storage at a first peripheral speed. A second peripheral speed of the component carrier of the first coiling device and the second strip guide around the winding axis is different from the first peripheral speed in order to coil the finished-rolled strip. It is particularly advantageous here if the first peripheral speed runs in the opposite direction to the second peripheral speed, whereby the finished-rolled strip can be coiled at a particularly high strip speed and, at the same time, the intermediate ring can be reduced in size, so that sufficient storage capacity is available when the intermediate ring grows again due to the finished-rolled strip while the finished-rolled coil is to be removed.

[0023] In a further embodiment, the first strip feed is pivoted into the start-up position, wherein the second strip feed and the first strip feed are aligned in such a way that the first straight line and the second straight line overlap. In the start-up position, the finished rolled strip is guided via the first strip feed and the second strip feed to the first coiling device, and a start of the coil is wound. The first strip feed is pivoted into the conveying position, and the drive motor is activated, so that the second strip feed, the first strip feed, and the first coiling device rotate about the winding axis. This embodiment has the advantage that, at the start of the thin-walled finished rolled strip, the finished rolled strip can be fed into the first coiling device particularly easily.

[0024] The invention is explained in more detail below with reference to the figures. These show:

[0025] FIG 1 is a schematic representation of a combined casting and rolling plant for producing a thin-walled steel strip;

[0026] FIG 2 shows a section of a perspective view of the reel system shown in FIG 1 according to a first embodiment;

[0027] FIG 3A is a detail of a side view of the reel system shown in Figures 1 and 2; FIG 3B is a perspective view of the reel system shown in Figures 1 and 2;

[0028] FIG 4 is a perspective view of the coiler system shown in Figures 1 to 3 during operation of the combined casting and rolling plant;

[0029] FIG 5 is a flow chart of a preparatory process for operating the combined casting and rolling plant shown in Figures 1 to 4;

[0030] FIG 6 a side view of the reel system during a second preparation step;

[0031] FIG 7 is a side view of a section of the reel system shown in Figures 1 to 4 during a third preparation step;

[0032] FIG 8 shows a section of a side view of the reel system shown in Figures 1 to 7 during a sixth preparation step;

[0033] FIG 9 is a flow chart of a method for coiling the thin-walled finished rolled strip;

[0034] FIG 10A shows a side view of the reel system during a first method step;

[0035] FIG 10B shows a first diagram of a maximum second belt speed plotted against time;

[0036] FIG 10C shows a second diagram of a second strip speed of the finished rolled strip to be coiled plotted over time;

[0037] FIG 11 is a perspective view of the section of the reel system shown in FIG 10A during the first method step;

[0038] FIG 12 shows a section of a perspective view of the reel system shown in Figures 1 to 4 during a third method step;

[0039] FIG 13 shows a section of a perspective view of the reel system shown in Figures 1 to 4 during a fifth method step;

[0040] FIG 14 shows a perspective section of the reel system shown in Figures 2 to 4 at the end of a sixth method step;

[0041] FIG 15 is a perspective view of the reel system at the end of an eighth process step;

[0042] FIG 16 a perspective view of the reel system during a ninth process step;

[0043] FIG 17 is a perspective view of the reel system at the end of the ninth process step;

[0044] FIG 18 is a flow chart of a changeover process for changing from the thin finished rolled strip with a second thickness to the finished rolled strip with a first thickness;

[0045] FIG 19 shows a section of a perspective view of a reel system according to a second embodiment;

[0046] FIG 1 shows a schematic representation of a combined casting and rolling plant 10 for producing a thin-walled finished rolled strip 80, in particular a steel strip 245.

[0047] The combined casting and rolling plant 10 comprises a continuous casting machine 15, for example a roughing train 20, preferably an intermediate heater 25, preferably a descaler 30, a finishing train 35, a cooling train 40, a first separating device 41 and a coiler system 45.

[0048] The continuous casting machine 15 is designed, for example, as a bow-type continuous casting machine. Another design of the continuous casting machine 15 would also be conceivable. The continuous casting machine 15 has, for example, a ladle 50, a distributor 55, and a mold 60. During operation of the combined casting and rolling plant 10, the distributor 55 is filled with a metallic melt 65 by means of the ladle 50. The metallic melt can be produced, for example, using a converter, for example in a Linz-Donawitz process. The metallic melt 65 can, for example, comprise steel. The metallic melt 65 flows from the distributor 55 into the mold 55. In the mold 55, the metallic melt 65 is cast into a thin slab strand 70. The partially solidified thin slab strand 70 is drawn from the mold 60 and, due to the design of the continuous casting machine 15 as a curved continuous casting machine, is deflected in an arc-shaped manner into a horizontal position, supported and solidified in the process.The thin slab strand 70 is conveyed away from the mold 60 in the conveying direction.

[0049] It is particularly advantageous if the continuous casting machine 15 casts the thin slab strand 70 in a continuous strand. In a conveying direction of the thin slab strand 70, the roughing mill 20 is arranged downstream of the continuous casting machine 15. The roughing mill 20 rolls the hot thin slab strand 70 fed into the roughing mill 20 into a roughing strip 75. The roughing strip 75 is fed to the intermediate heater 25. The intermediate heater 25 can be designed, for example, as an induction furnace. The intermediate heater 25 heats the roughing strip 70 before it is fed into the descaler 30 arranged downstream of the intermediate heater 20. In the descaler 30, the roughing strip 75 is descaled before it is conveyed into the finishing rolling mill 35 arranged downstream of the descaler 30. The finishing rolling mill 35 rolls the roughing strip 75 into a finishing strip 80 by means of preferably several finishing rolling stands.After passing through the finishing rolling mill 35, the finished rolled strip 80 is conveyed to the cooling mill 40, where the finished rolled strip 80 is forced cooled.

[0050] After passing through the cooling line 40, the finished rolled strip 80 is transported to the coiling system 45 after passing through the deactivated first cutting device 41, which can be designed, for example, as a drum shear or a pendulum shear. In the coiling system 45, the finished rolled strip 80 is wound into a coil 85. The coiling system 45 and a method for operating the coiling system 45 are described in the following figures. In the embodiment, the finished rolled strip 80 is designed, by way of example, as a steel strip 245. Of course, it would also be possible to coil a non-ferrous finished rolled strip 80 using the coiling system 45.

[0051] FIG 2 shows a section of a perspective view of the reel system 45 shown in FIG 1 according to a first embodiment.

[0052] The reel system 45 has at least a first mandrel 90, a first coiling device 95, a first strip guide 100, a second strip guide 105, a strip storage device 110, a drive device 115, a second separating device 116, preferably a pinch roller arrangement 117, at least one second mandrel 120, a second coiling device 125, a discharge device 130, and a roller conveyor 135. The first mandrel 90 extends along a winding axis 140. The first mandrel 90 is preferably arranged to be rotatable about the winding axis 140 and can be driven.

[0053] The drive device 115 has a drive motor 145 and a component carrier 150. The component carrier 150 is arranged so as to be rotatable with the drive motor 145. The component carrier 150 is mounted so as to be rotatable about the winding axis 140. The drive motor 145 is designed to drive the component carrier 140 in the activated state, so that the component carrier 150 rotates about the winding axis 140.

[0054] The component carrier 150 is, for example, disk-shaped. The component carrier 150 is connected to the drive motor 145 in a rotationally fixed manner. The drive motor 145 is designed to rotate the component carrier 150 about the winding axis 140 when the drive motor is activated. Relative to the winding axis 140, the component carrier 150, which is essentially disk-shaped, extends in a rotational plane perpendicular to the winding axis 140. On an axial side facing away from the drive motor 145, relative to the winding axis 140, the first coiling device 95, the second strip feed 105, the pinch roller arrangement 117, and the second separating device 116 are attached to the component carrier 150. The first mandrel 90 can extend through the component carrier 150. The first mandrel 90 is not connected to the component carrier 150 in a rotationally fixed manner, so that the first mandrel 90 can rotate about the winding axis 140 at a different speed than the component carrier 150.

[0055] The strip storage 110 is arranged radially outside the component carrier 150. The strip storage 110 and the component carrier 150 can be arranged relative to one another such that the component carrier 150 is arranged essentially in the axial direction relative to the winding axis 140 on an axial side of the strip storage 110. The component carrier 150, which has a substantially circular basic shape in a plan view, is circumferentially enclosed by the strip storage 110. The strip storage 110 is arranged radially outside the component carrier 150.

[0056] The tape storage device 110 has at least a first roller arrangement 155 and a carrier unit 160. The carrier unit 160 has a first carrier 165, a second carrier 170, and at least one carrier joint 175. The first carrier 165 is, for example, partially annular. The first carrier 165 can be formed from two carrier elements 180, 185 arranged parallel to one another and offset in the axial direction relative to the winding axis 140. The first and second carrier elements 180, 185 can be identical to one another in a side view parallel to the winding axis 90. In this embodiment, the first carrier 165 encloses an angle of preferably 80° to 180 degrees, in particular 50° to 180°. At one end, a first carrier element 180 and a second carrier element 185 of the first carrier 165 are connected to the carrier joint 175.

[0057] The second carrier 170 can be constructed essentially identically to the first carrier 165. In the embodiment, the second carrier 170 has, for example, a third carrier element 190 and a fourth carrier element 195, each of which is partially annular. The second carrier 170 preferably also encloses an angle of 80° to 180 degrees, in particular 50° to 180°. The second carrier 170 is connected at one end to the carrier joint 175. The third and fourth carrier elements 190, 195 are arranged offset from one another in the axial direction relative to the winding axis 140. The first carrier element 180 and the third carrier element 190 can be arranged in a common plane of rotation relative to the winding axis 140, and the second carrier element 185 and the fourth carrier element 195 can be arranged in a further common plane of rotation perpendicular to the winding axis 140.

[0058] The second carrier 170 is pivotable by means of the carrier joint 175 about a first pivot axis, which runs parallel to the winding axis 9140, between a first position (shown in FIG. 3) and a second position (shown in FIG. 2). In the second position, the second carrier 170 is pivoted slightly away from the first carrier 165 and, on a side facing away from the carrier joint 175, defines an opening 205 in the circumferential direction between the first carrier 165 and the second carrier 170.

[0059] The first roller arrangement 155 has a plurality of support rollers 210 arranged offset from one another in the circumferential direction. In the embodiment, a first sub-arrangement of the support rollers 210 is arranged on the first carrier 165 in the axial direction between the first carrier element 180 and the second carrier element 185. The support rollers 210 of the first sub-arrangement are rotatably mounted on the first carrier 165. A second sub-arrangement of the first roller arrangement 155 of the support rollers 210 is arranged in the axial direction between the third carrier element 190 and the fourth carrier element 195. The support rollers 210 of the second sub-arrangement are rotatably mounted on the second carrier 170. Furthermore, the first roller arrangement 155 has a first input roller 215. The first input roller 215 is arranged on a side facing away from the carrier joint 175 in the circumferential direction relative to the winding axis 140.The first input roller 215 is, for example, rotatably mounted between the first carrier element 180 and the second carrier element 185.

[0060] The first input roller 215 preferably has a first magnetic device 220. The first magnetic arrangement 220 can, for example, have an arrangement of permanent magnets. Alternatively, it is also conceivable for the first input roller 215 to be made, at least circumferentially, from a ferromagnetic material that is magnetized. The first input roller 215, by means of the first magnetic device 220, provides a first magnetic field that exits and / or enters the first input roller 215 at a first input rolling surface of the first input roller 215.

[0061] Furthermore, the strip storage device 110 can have at least one adjusting device 225. The adjusting device 225 can have at least one adjusting unit 230 per support roller 210 and / or the first input roller 215. In the embodiment, an adjusting unit 230 is provided for each of the support rollers 210 and the first input roller 215. The adjusting unit 230 is designed to mechanically connect the respectively assigned support roller 210 or first input roller 215 to the first carrier 165 or the second carrier 170. The adjusting unit 230 is further designed to fix and move a radial position between a first radial position and a second radial position, different from the first radial position, of the respectively assigned support rollers 210 or the first input roller 215 in the radial direction, and to ensure the rotatability of the support rollers 210 and the first input roller 215.For this purpose, the actuating unit 230 can, for example, have an electric motor connected to a threaded rod, which moves the respective associated first input roller 215 and / or support roller 210 between the first radial position and the second radial position. When the support roller 210 and / or the first input roller 215 are moved between the first radial position and the second radial position, the radial position of the respective carrier 165, 170 can be maintained.

[0062] FIG 3A shows a detail of a side view of the reel system 45 shown in Figures 1 and 2. FIG 3B shows a perspective view of the reel system 45 shown in Figures 1 and 2. In FIG 3A, the second carrier 170 is in the first position. As a result, the first carrier 165, together with the second carrier 170, forms a closed ring which completely encompasses the component carrier 150 on the circumference. Furthermore, FIG 3 clearly shows an exemplary regular arrangement in the circumferential direction relative to the winding axis 140 of the actuating units 230. In FIG 3A, the actuating units 230 are hidden and shown in sections with a dashed line. The support rollers 210 of the first roller arrangement 155 are arranged on a first circular path around the winding axis 140.

[0063] The second strip feed 105 further includes a second input roller 235. The second input roller 235 is rotatably mounted on the component carrier 150. The second input roller 235 is arranged radially outside the second strip feed 105 and the first coiling device 95. The second input roller 235 can, for example, have an enlarged outer diameter compared to the support roller 210. Furthermore, in the radial direction, the second input roller 235 is preferably arranged adjacent to the first carrier 165 or, depending on the circumferential position, adjacent to the second carrier 170.

[0064] Between a rolling surface 240 of the support roller 210 and a second input rolling surface 245 of the second input roller 235, an annular gap 250 is defined by both the first roller assembly 155 and the second input roller 235, which extends circumferentially around the winding axis 140. In the axial direction, the annular gap 250 is defined by the support elements 180, 185, 190, 195.

[0065] The first strip feed 100 has a second roller arrangement 255. The second roller arrangement 255 can extend on both sides of a transport path 260 of the finished-rolled strip 80. The first strip feed 100 is preferably pivotable between a starting position (shown in FIG. 2) and a conveying position (shown in FIGS. 3A and B). In the conveying position, for example, the first strip feed 110 is aligned tangentially to the annular gap 250, so that the transport path 260 of the finished-rolled strip 80 runs tangentially into the annular gap 250. Alternatively, the transport path 260 can also form a small angle (less than or equal to 20°) to a tangent to the annular gap 250.

[0066] The second belt feed 105 has a third roller assembly 265. Alternatively or in addition to the third roller assembly 265, guide plates could also be provided. The third roller assembly 265 is arranged radially inward of the second input roller 235. The transport path 260 is guided in the third roller assembly 265 by the third roller assembly 265 such that rollers of the second roller assembly 265 are arranged on both sides of the transport path.

[0067] The second input roller 235 is arranged on the input side, relative to the conveying direction of the finished rolled strip 80, within the second strip feed 105. The second input roller 235 can have a second magnetic device 236. The second magnetic device 236 has one or more permanent magnets. Alternatively, it is also possible for the second input roller 235 to have a ferromagnetic material that is magnetized, at least on its second input rolling surface. The second input roller 235 provides a second magnetic field that exits at a third rolling surface of the second input roller 235.

[0068] The second separating device 116 is fastened to the component carrier 150 radially inward of the second strip feed 105. Thus, in the radial direction relative to the winding axis 140, the second separating device 116 is arranged between the first coiling device 95 and the second strip feed 105. The second separating device 116 can be designed, for example, as a shear, for example as a drum shear or as a guillotine shear, wherein the transport path 260 runs through the second separating device 116. The pinch roller arrangement 117 with two opposing pinch rollers can be arranged radially inward of the second separating device 116. The pinch roller arrangement 117 is thus arranged between the first coiling device 95 and the second separating device 116. Alternatively, the pinch roller arrangement 117 can also be arranged radially outward of the second separating device 116 and thus be connected upstream of the second separating device 116.

[0069] The first coiling device 95 has a strip inlet 270. The strip inlet 270 is aligned tangentially to an outer first circumferential side 275 of the first mandrel 90. The first coiling device 95 is arranged circumferentially around the first mandrel 90, with the first mandrel 90 engaging the first coiling device 95.

[0070] FIG 4 shows a perspective view of the coiler system 45 shown in Figures 1 to 3 during operation of the combined casting and rolling plant 10.

[0071] The combined casting and rolling plant 10 is operated, for example, in such a way that the finished-rolled strip 80 with a first thickness d1 of 0.4 to 25 mm inclusive, in particular of 0.4 to 8 mm inclusive, in particular of 0.4 to 4 mm inclusive, particularly advantageously of 1.5 to 4 mm inclusive, is conveyed from the output side of the finishing rolling train 35. The finished-rolled strip 80 is cooled in the cooling train 40 and guided past the first separating device 41. The finished-rolled strip 80 is transported into the coiler system 45. The finished-rolled strip 80 is guided from the discharge device 130 to the second coiling device 125. The second coiling device 125 winds the finished rolled strip 80 with the above-mentioned first thickness d1 of 0.4 to 25 mm inclusive, in particular 1.5 to 25 mm inclusive, into a coil 85 on the second mandrel 120.Once the coiling of the coil 85 is completed, the first cutting device 41 is activated and the finished rolled strip 80 is cut off, and the cut off finished rolled strip 80 is completely wound onto the coil 85. The completely wound coil 85 is removed from the second mandrel 120, and a new winding process is started on the third coiling device 126.

[0072] FIG. 5 shows a flowchart of a preparation method for operating the combined casting and rolling plant 10 shown in FIGS. 1 to 4, in particular the coiler system 45. FIG. 6 shows a side view of the coiler system 60 during a second preparation step 410. FIG. 7 shows a plan view of a section of the coiler system 45 shown in FIGS. 1 to 4 during a third preparation step 415. FIG. 8 shows a section of a side view of the coiler system 45 shown in FIGS. 1 to 7 during a sixth preparation step 430.

[0073] The method shown below serves to produce the finished rolled strip 80, in particular the steel strip 245, by means of the combined casting and rolling plant 10 shown in Figures 1 to 4 and to wind it onto a coil 85 by means of the coiling system 45.

[0074] For this purpose, in a first preparatory step 405, a cross-section of the mold 60 is preferably reduced. The reduction of the mold cross-section 60 has the effect of tapering the thin slab strand 70 cast by the mold 60. The thin slab strand 70 is rolled in the roughing train 20 to form the roughing strip 75, so that the roughing strip 70 has a reduced roughing strip thickness compared to normal operation of the combined casting and rolling plant 10. The roughing strip 75 is passed through the intermediate heater 25 and the descaler 30 with the reduced roughing strip thickness and is finish-rolled in the finishing train 35 to form a finish-rolled strip 80, preferably with a second thickness d2 of 0.4 mm to 4 mm, in particular of 0.4 to 1.5 mm inclusive, particularly advantageously 0.4 mm to 1 mm. The second thickness d2 may, for example, be reduced compared to the first thickness d1.The finished rolled strip 80 is conveyed through the cooling line 40, where the finished rolled strip is forced cooled. The forced-cooled finished rolled strip is transported through the first cutting device 41. The thin-walled finished rolled strip 80 with a thickness of d2 passes through the cutting device 41 without being cut. After the first cutting device 41, the finished rolled strip 80 is transported at the discharge device 130 toward the first strip feeder 100 by means of the roller conveyor 130. As a result, the thin-walled finished rolled strip 80 is not conveyed toward the second or third coiling device 125, 126.

[0075] In the second preparation step 410 (see FIG. 6), the second carrier 170 is moved into the second position. The second carrier 170 is pivoted away from the first carrier 165 about the first pivot axis 200, and the first opening 205 is widened. In the second position, the second carrier 170 is arranged at a greater distance from the component carrier 150 than in the first position.

[0076] In the third preparatory step 415 (see FIG. 7), the first strip feed 100 is pivoted from the conveying position (as shown in FIG. 6) into the approach position about the second pivot axis 280. The first strip feed 100 is configured such that the transport path 260 in the first strip feed extends along a first straight line 285. The first straight line 285 is directed tangentially toward a first outer circumferential side 275 of the first mandrel 90.

[0077] In a fourth preparatory step 420, the drive motor 145 is activated, and the drive motor 145 rotates the component carrier 150 about the winding axis 140 such that the second tape feed 105 is aligned with the first tape feed 100. The component carrier 150 is in an insertion position. As shown in FIG. 8, the second tape feed 105 can extend along a second straight line 290, and in the fourth preparatory step 420, the drive motor 145 rotates the component carrier 150 such that the first straight line 285 and the second straight line 290 overlap.

[0078] In a fifth preparation step 425, the thin-walled finished-rolled strip is conveyed out of the cooling line 40 in the direction of the first strip feed 260. At the beginning of the first strip feed 100, the finished-rolled strip 80 can be deflected relative to a conveying direction of the finished-rolled strip 80. Within the first strip feed 100, the finished-rolled strip 80 is transported along the first straight line 285 on the transport path 260 in the direction of the first coiling device 95.

[0079] After passing through the first strip feeder 100, the first finished-rolled strip 80 is guided past the second input roll 235 without being deflected at the second input roll 235. Within the second strip feeder 105, the finished-rolled strip 80 is transported along the transport path 260 along the second straight line 290 to the second cutting device 116. The finished-rolled strip 80 is passed through the second cutting device 116 and guided into the pinch roller arrangement 117. The pinch rollers of the pinch roller arrangement 117 are pressed onto both sides of the finished-rolled strip 80 and fix the finished-rolled strip 80. The pinch rollers of the pinch roller arrangement 117 can be driven. From the pinch roller arrangement 117, the finished-rolled strip 80 is transported to the input side of the first coiling device 95.

[0080] The first coiling device 95 presses the thin-walled finished rolled strip 80 against the first outer peripheral side 275 of the first mandrel 90 and guides the thin-walled finished rolled strip 80 along the first outer peripheral side 275.

[0081] In the sixth preparatory step 430, the first strip feeder 100 is pivoted about the second pivot axis from the approach position (shown by a solid line in FIG. 8) to the conveying position (indicated by a dashed line in FIG. 8). In doing so, the first strip feeder 100 carries the finished rolled strip 80 along, so that the first straight line (shown by a dot-dash line in FIG. 8) is aligned tangentially or at an angle of less than or equal to 20° to a tangent to a third outer circumferential side 300 of the first input roll 215 of the strip storage device 110 in the conveying position.

[0082] At the same time, the drive motor 145 is activated to pivot the first strip feeder 100, and the drive motor 145 rotates the component carrier 150 such that the second input roller 235 is moved synchronously with the pivoting of the first strip feeder 100. For example, the drive motor 145 rotates the component carrier 150 by approximately 90° relative to the insertion position into a coil position.

[0083] The second magnetic field of the second input roller 235 ensures secure application of the thin-walled finished-rolled strip 80 to the second input roller 235. The second input roller 235 feeds the finished-rolled strip 80 into the second strip guide 105, wherein the finished-rolled strip 80 is conveyed along the second straight line 290 within the second strip feed 105. The first straight line 285 and the second straight line 290 are then aligned in a V-shape relative to one another.

[0084] In a seventh preparation step 435, the finished rolled strip 80 is guided through the separating device 41 and is wound onto the first mandrel 90 by the first coiling device 95, the first separating device 41 not being actuated.

[0085] In an eighth preparatory step 440, the strip storage device 110 is closed. The second carrier 170 is moved into the first position about the first pivot axis 200 on the carrier joint 175, so that the first carrier 165 and the second carrier 170 are arranged on a common third circular path.

[0086] With the closing of the strip storage 110 and completion of the eighth preparation step 440, a sequence of coiling / coil unwinding / strip storage of the thin-walled finished rolled strip 80 can begin as described in the following FIG 9.

[0087] FIG. 9 shows a flow diagram of a method for coiling the thin-walled finished-rolled strip 80 with the above-mentioned second thickness d2. FIG. 10A shows a side view of the coiling system 45 during a first method step 505. FIG. 10B shows a first diagram of a maximum second strip speed v2MAX plotted against time t from the start of coiling to the end of the coiling process, when the coil has reached its maximum diameter. FIG. 10C shows a second diagram of the second strip speed v2 of the finished-rolled strip 80 to be coiled onto the first mandrel 90, plotted against time t.

[0088] FIG. 11 shows a perspective view of the section of the reel system 45 shown in FIG. 10A during the first method step 505. FIG. 12 shows a section of a perspective view of the reel system 45 shown in FIGS. 1 to 4 during a third method step 515. FIG. 13 shows a section of a perspective view of the reel system 45 shown in FIGS. 1 to 4 during a fifth method step 525. FIG. 14 shows a perspective view of the reel system 45 shown in FIGS. 2 to 4 at the end of a sixth method step 530. FIG. 15 shows a perspective view of the reel system 45 at the end of an eighth method step 540. FIG. 16 shows a perspective view of the reel system 45 during a ninth method step 545. FIG. 17 shows a perspective view of the reel system 45 at the end of the ninth procedural step 545.

[0089] The method described below is carried out according to the preparation steps 405 to 440 described in FIG 5. The component carrier 150 is in the coil position, the first strip feed is in the first position.

[0090] In the first method step 405, the finished-rolled strip 80 is conveyed tangentially into the strip storage 110, for example, at a first strip speed v1 via the roller conveyor 130 and the first strip feed along the first straight line 285. The finished-rolled strip 80 is guided through the first input roller 215 into the annular gap 250. Because the finished-rolled strip 80 preferably comprises steel and has been cooled below a Curie temperature by the cooling line 40, the finished-rolled strip 80 has ferromagnetic properties. The first magnet arrangement 220 forms a first magnetic connection with the finished-rolled strip 80, so that the finished-rolled strip 80 reliably rests against the first input rolling surface of the first input roller 215.

[0091] This ensures a safe introduction of the pre-rolled strip 80 into the annular gap 250.

[0092] Preferably, the first strip speed v1 of the finished-rolled strip 80 is preferably between 10 m / s and 50 m / s inclusive. It is particularly advantageous if the first strip speed v1 of the finished-rolled strip 80 is at least between 20 m / s and 50 m / s inclusive.

[0093] The second magnet arrangement of the second input roller 230 creates a second magnetic connection with the ferromagnetic material of the finished rolled strip 80 (see FIG. 11). As a result, the finished rolled strip 80 rests firmly against the second input rolling surface 245. The second input roller 235 deflects the finished rolled strip 80 by approximately 90°. The finished rolled strip 80 located in the annular gap 250 is guided radially inward through the second strip feed 105 toward the first mandrel 90. On the first mandrel 90, the finished rolled strip 80 is wound onto the first mandrel 90 to form the coil 95.

[0094] The finished-rolled strip 80 is introduced into the strip storage 110 via the first strip feed 100 tangentially to the winding axis 140 and to the first roller arrangement 155. Furthermore, the small second thickness d2 of the finished-rolled strip 80 makes the finished-rolled strip 80 particularly flexible and bendable. The high first strip speed v1 of the finished-rolled strip 80 causes the finished-rolled strip 80 to be pressed radially outward in the strip storage 110 due to a centrifugal force FZ acting on the finished-rolled strip 80 (see FIG. 10A). The finished-rolled strip 80 is guided along the first roller arrangement 155 at a first circumferential speed co1. On an outer side of the finished-rolled strip 80, the finished-rolled strip 80 rests against the support rollers 210 of the first roller arrangement 155. The first roller arrangement 155 deflects the finished rolled strip 80 within the strip storage 110 onto a second circular path 310, which runs around the reel axis 140 and is arranged in the annular gap 250.

[0095] The finished-rolled strip 80 is transported along the first roller arrangement 155 toward the second input roller 235 along the second circular path 310. The second magnet arrangement 236 of the second input roller 235 forms a second magnetic connection with the ferromagnetic material of the finished-rolled strip 80, ensuring a secure hold of the finished-rolled strip 80 on the second input rolling surface 245.

[0096] The finished-rolled strip 80 is then fed via the second strip feeder 105 and the opened second separating device 116 to the first coiling device 95. The first mandrel 90 winds the finished-rolled strip 80 into a coil 85. The first mandrel 90 is driven for this purpose. A second strip speed v2 at which the finished-rolled strip 80 is wound essentially corresponds to the first strip speed v1.

[0097] A first graph 320 is plotted in FIG. 10B, and a second graph 325 is plotted in FIG. 10C. It can be clearly seen (cf. FIG. 10B) that with increasing time t, the maximum possible second strip speed v2MAX, at which the finished-rolled strip 80 can be coiled through the first mandrel 90 and the first coiling device 95, increases due to the increasing coil diameter. The maximum possible second strip speed v2MAX depends on the coil diameter, the second thickness d2 of the thin finished-rolled strip 80, and the maximum possible rotational speed of the first mandrel 90.

[0098] The second graph 325 in FIG. 10C is divided into first to seventh graph sections 330 to 360, which correlate with individual method steps described below. In the first method step 505, the second strip speed v2 is essentially constant (cf. first graph section 330). In a second method step 510, a coil thickness of the already wound coil is monitored. If the coil 95 reaches a predefined coil thickness, the process continues with a third method step 515.

[0099] In the third method step 515 (see FIG. 12), the drive motor 145 is started and the component carrier 150 is accelerated in the circumferential direction about the rotation axis 140 to the second circumferential speed c02. The first circumferential speed c01 and the second circumferential speed c2 have the same direction of rotation. The drive motor 145 accelerates the component carrier 150 until the first circumferential speed c01 and the second circumferential speed c02 are essentially identical. This third method step 515 is started when a coil thickness of the coil 95 has reached a predefined coil thickness and the coil 95 must be pulled off the mandrel 90.

[0100] As the component carrier 150 rotates around the winding axis 140, the finished-rolled strip 80 is wound into an intermediate ring 305 in the strip storage 110 by the second input roller 235 and the first roller assembly 155. The finished-rolled strip 80 is wound onto the intermediate ring 305 via the first input roller 215 on a rolling surface 240 formed from the inner generatrices of all support rollers 210, so that an outer diameter of the intermediate ring 305 increases with each layer of the finished-rolled strip 80 on the intermediate ring 305. The intermediate ring 305 rotates around the winding axis 140 in the strip storage 110 at the first peripheral speed co 1.

[0101] Due to the acceleration of the component carrier 150 in the direction of the first circumferential speed co 1 , the second strip speed v 2 at which the finished-rolled strip 80 is coiled decreases (see second graph section 335, FIG. 10C). The uncoiled finished-rolled strip is temporarily stored in the strip storage unit 110.

[0102] If the component carrier 150 rotates at the second peripheral speed co2 equal to the first strip speed v1, no more finished-rolled strip 80 is fed from the second strip feed 105 toward the first coiling device, but rather the finished-rolled strip 80 is wound onto the intermediate ring 305. The strip speed v1 of the finished-rolled strip 80, at which the finished-rolled strip 80 is fed into the coiling system 45, is essentially constant. The first peripheral speed co1 and the second peripheral speed c2 are essentially identical at the end of the fourth method step 520, so that the intermediate ring 305 is no longer unwound by the second input roller 235, and the second strip speed v2 of the finished-rolled strip 80 is reduced to zero at the separating device 161 (see third graph section 340, FIG. 10C).The drive motor 145 is controlled in such a way that the second peripheral speed c 2 is equal to the first peripheral speed co 1 when the coil 95 is completely wound and full.

[0103] In a fourth method step 520, which is carried out simultaneously with the third method step, the adjusting device 225 is activated during the winding of the intermediate ring 305. While the intermediate ring 305 is wound, an outer diameter of the intermediate ring 305 increases with each layer of the finished-rolled strip 80 wound onto the intermediate ring 305. To prevent the intermediate ring 305 from jamming in the strip storage 110, the adjusting device 225 and the adjusting unit 230 provided for each support roller 210 and the input roller 215 move the respectively assigned support roller 210 and the first input roller 215 from the first radial position radially outward toward the second radial position. This process is carried out as long as finished-rolled strip 80 is wound onto the intermediate ring 205.

[0104] In the fifth method step 525 (see FIG. 13), the second cutting device 161 is actuated, while the finished-rolled strip 80 is positioned at the second cutting device 161. The first mandrel 90 can be further driven in order to be able to wind up the severed finished-rolled strip 80. One strip end of the finished-rolled strip 80 is held by the second strip feed 105. Additionally, the first mandrel 90 can be supported by a mandrel support (not shown).

[0105] In a sixth method step 530 following the fifth method step 525, the wound coil 85 is pulled off the first mandrel 90 along the first winding axis 140 in a direction away from the component carrier 150 by means of a removal device 311 (shown schematically in FIG. 13).

[0106] During the sixth method step 530, the component carrier 150 and the second strip guide 105 arranged on the component carrier 150, the separating device 161, and the first coiling device 95 continue to rotate at the second peripheral speed o2, which is identical to the first peripheral speed co1. During the coil removal in the sixth method step 530, the finished rolled strip 80, which continues to come from the cooling line 55, is wound externally onto the intermediate ring 305.

[0107] In order to wind another coil 85 onto the first mandrel 95 and unwind the intermediate ring 305 from the inside, in a seventh process step 535 following the sixth process step 530, the separating device 161 is opened. Second, the drive motor 145 is controlled such that the second peripheral speed c 2 is reduced compared to the first peripheral speed c 1 . This causes the finished rolled strip 80 to be slowly unwound from the inside of the intermediate ring 305. The unwound finished rolled strip 80 is introduced into the first coiling device 95 by the separating device 161 and wound onto the first mandrel 90 to form the next coil 85. For this purpose, the first mandrel 90 is set in motion again. The winding of a new coil 80 begins (cf. fourth graph section 345, FIG. 10C).

[0108] In the eighth method step 540 following the seventh method step 535, the component carrier 150 is not only decelerated, as in the seventh method step 535, but the direction of rotation of the component carrier 155 is changed to a direction opposite to the direction of rotation of the intermediate ring 305 (see FIG. 15). In this way, the individual layers of the intermediate ring can be unwound from the inside. The unwound layers are transported via the second strip feed 105 to the first coiling device 95 and wound onto the further coil 85. The strip speed v2 in the first coiling device can be increased to 50 m / s, which is significantly greater than the first strip speed v1 of the finished-rolled strip 80 at the first strip feed 100 (see fourth and fifth graph sections 345, 350, FIG. 10C).

[0109] The eighth method step 535 is carried out until the layers of the intermediate ring 305 have been unwound and the intermediate ring 305 is only present in a single layer in the strip storage 110. Towards the end, the component carrier 150 is braked to a standstill. During braking, the second strip speed v2 is also reduced to the first strip speed v1 (cf. sixth graph section 355, FIG. 10C). Preferably, the drive motor 145 is controlled such that the component carrier 150 assumes the coil position. The finish-rolled strip is coiled at the second strip speed v2, which corresponds to the first strip speed v1 (cf. seventh graph section 360). After the intermediate ring 305 is, on the one hand, only present in a single layer, as shown in FIG. 15, and, on the other hand, the intermediate ring 305 has essentially been unwound, the process continues with a ninth method step 545. In the ninth procedural step 545 (cf.FIG 16), the adjusting device 225 is activated such that the adjusting units 230, the support rollers 210 and the first input roller 215 are moved from the second radial position radially outward in the direction of the first radial position, radially inward in the direction of the winding axis 140.

[0110] After the ninth method step 545 (see FIG. 17), the process can continue with the first method step 505. The process described in FIG. 9 can be carried out until sufficient finished-rolled strip 80 with the second thickness d2 has been produced and there is no further demand for thin-walled finished-rolled strip 80. During the winding of the coils 85 with the coiling system 45, no further coiling with the second coiling device 125 or third coiling device 126 is necessary.

[0111] FIG 18 shows a flow chart of a changeover process for changing from the thin finished rolled strip with the second thickness d2 to the finished rolled strip 80 with the first thickness d1.

[0112] In a first return step 605, the component carrier 150 is moved into the coil position (see FIGS. 10A, 17), so that, for example, the second strip feed 105 is arranged between the first mandrel 90 and the first carrier 165. This ensures that an overhead run of the finished rolled strip 80 on the underside of the second carrier 170 is avoided.

[0113] In a second changeover step 610, the tape storage device 110 is opened by moving the second carrier 170 from the first position to the second position (see FIG 6).

[0114] In the third return step 615, the first tape feed 100 is pivoted from the conveying position to the starting position about the second pivot axis 280. Furthermore, the component carrier 150 is rotated about the winding axis by the drive motor 145 such that the first tape feed 100 and the second tape feed 105 are aligned (see FIG. 7).

[0115] In the fourth return step 620, the second thickness d2 of the finished rolled strip 80 is increased from the second thickness d2 to the first thickness d1 in the finishing rolling train 35. In a fifth return step 625, the first cutting device 41 cuts off the finished rolled strip 80 before the finished rolled strip 80 with the first thickness passes through the first cutting device 41. The cut-off finished rolled strip 80 is wound onto a residual coil (not shown) by the first mandrel 90 and the first coiling device 95. After the remaining finished rolled strip 80 has been wound, the winding by means of the first mandrel 90 and the first coiling device 95 is completed.

[0116] In a sixth return changeover step 630, the discharge device 130 is set such that the finished rolled strip 80 with the first thickness d1 is conveyed in the direction of the second coiling device 125 or the third coiling device 126, so that either the second coiling device 125 or the third coiling device 126 can alternately coil the finished rolled strip 80 with the first thickness d1.

[0117] The first thickness d1 can be approximately 1 mm to 25 mm. In a sixth return step 630, the coils wound on the second coiling device 125 or third coiling device 126 are removed.

[0118] FIG 19 shows a section of a perspective view of a reel system 45 according to a second embodiment.

[0119] The reel system 45 is essentially identical to the reel system 45 according to the first embodiment shown in Figures 1 to 4, 6 to 8, and 10 to 17. The following will exclusively address the differences between the reel system 45 according to the second embodiment shown in Figure 19 and the reel system 45 according to the first embodiment.

[0120] In the reel system 45 shown in FIG. 19, the second carrier 170 as used in the reel system 45 according to the first embodiment is omitted. Furthermore, the carrier joint 175 for coupling the second carrier 170 to the first carrier 165 is omitted.

[0121] The methods for operating the coiling system of the first embodiment shown in Figures 1 to 4, 6 to 8, 10 to 17, and 19 can also be applied to the coiling system 45 according to the second embodiment shown in Figure 19. However, in this case, when the finished-rolled strip 80 is wound into the intermediate ring 305, it rests exclusively on the first roller arrangement 145 arranged on the first support 165. On the upper side of the first support 145, the finished-rolled strip 80 or the intermediate ring 305 is guided freely and without support. This is possible because the finished-rolled strip 80 is formed by the first support 165 and the first roller arrangement 155 arranged on the first support 165.By further rotating the intermediate ring 305 at the first circumferential speed co1, the preforming is further formed, so that essentially a circular ring-shaped intermediate ring is formed even without support by the second carrier 170 and the first roller arrangement arranged on the second carrier 170.

[0122] The embodiment shown in FIG. 19 thus has the advantage that the method described in FIG. 5 is simplified in that the second preparation step 410 and the eighth preparation step 440 can be omitted. Likewise, the third return step 615 can be omitted in the method described in FIG. 18.

[0123] As a result, the coiling system 45 described in FIG. 19 is simpler and more cost-effective than the coiling system 45 according to the first embodiment. Furthermore, the operating procedures according to FIGS. 5 and 18 for changing from the finished-rolled strip to the finished-rolled strip with the first thickness are simpler and easier to control.

[0124] The configurations of the coiling system 45 shown in the figures are particularly suitable for the production of the finished rolled strip 80 in continuous strands. This ensures reliable coiling of the thin-walled finished rolled strip at a high first strip speed v1.

[0125] Furthermore, the finished rolled strip 80 with the second thickness d2 can be particularly thin.

[0126] Furthermore, a carousel coiler system, which is far more complicated than the structure of the coiler system 45 shown in the figures, can be dispensed with. Furthermore, the control of the finishing rolling mill 35 is completely independent of the coiler system 45. Furthermore, with the coiler system 45 shown in the figures, a particularly high coil speed for coiling the coil 85 can be achieved. This allows the continuous casting machine to be fed with a particularly large quantity of molten metal and a large quantity of thin finished rolled strip 80 to be produced without having to reduce the casting speed in the continuous casting machine 15. List of Reference Symbols

[0127] 10 Casting-rolling combined plant

[0128] 15 Continuous casting machine

[0129] 20 Roughing mill

[0130] 25 Intermediate heating

[0131] 30 descalers

[0132] 35 Finishing rolling mill

[0133] 40 Cooling Street

[0134] 41 first separating device

[0135] 45 reel system

[0136] 50 pan

[0137] 55 distributors

[0138] 60 molds

[0139] 65 metallic melt

[0140] 70 thin slab strands

[0141] 75 pre-rolled strip

[0142] 80 finished rolled strip

[0143] 85 Coil

[0144] 90 first thorn

[0145] 95 first coil device

[0146] 100 first belt feed

[0147] 105 second belt feed

[0148] 110 tape storage

[0149] 115 Drive device

[0150] 116 second separating device

[0151] 117 Pinch roller arrangement

[0152] 120 second mandrel

[0153] 125 second coil device

[0154] 126 third coil device

[0155] 130 Execution facility

[0156] 135 roller conveyor

[0157] 140 winding axis

[0158] 145 drive motor

[0159] 150 component carriers

[0160] 155 first roller arrangement

[0161] 160 Carrier unit second separating device first carrier second carrier carrier joint first carrier element second carrier element third carrier element fourth carrier element first pivot axis first opening support rollers first input roller first magnet arrangement adjusting device adjusting unit second input roller second magnet arrangement first rolling surface second rolling surface annular gap second roller arrangement transport path third roller arrangement belt inlet first outer circumferential side second pivot axis first straight line second straight line second outer circumferential side intermediate ring circular path removal device first graph second graph first preparation step second preparation step 415 third preparation step 420 fourth preparation step 425 fifth preparation step

[0162] 505 first process step 510 second process step 515 third process step 520 fourth process step 525 fifth process step 530 sixth process step 535 seventh process step 540 eighth process step

[0163] 605 first return step 610 second return step 615 third return step 620 fourth return step 625 fifth return step 630 sixth return step d1 first thickness d2 second thickness FZ centrifugal force t time v1 first speed v2 second speed co 1 first peripheral speed a>2 second peripheral speed

Claims

Patent claims 1. Coiling system (45) for coiling a finished rolled strip (80), - wherein the reel system (45) comprises at least a first mandrel (90), a first coiling device (95), a first strip feed (100), a second strip feed (105), a strip storage device (110) and a drive device (115), - wherein the first mandrel (90) extends along a winding axis (140), - wherein the drive device (115) comprises a component carrier (150) and a drive motor (145) connected to the component carrier (150), - wherein the first coiling device (95) and the second strip feed (105) are fastened to the component carrier (150) and the drive motor (145) is designed to rotate the component carrier (150), the first coiling device (95) and the second strip feed (105) about the winding axis (140), - wherein the strip storage (110) is arranged radially outside the component carrier (150) and the first coil device (95), - wherein the first tape feed (100) is arranged radially outside the tape storage (110), - wherein the finished rolled strip (80) can be fed into the coiler system (45) along a conveying direction of the finished rolled strip (80) via the first strip feeder (100), - wherein the first strip feed (100) is designed to transport the finished rolled strip (80) to the strip storage (110), - wherein the strip storage device (110) is designed to wind the finished rolled strip (80) supplied via the first strip feeder (100) into an intermediate ring (305), - wherein the second strip feed (105) is designed to unwind the finished rolled strip (80) wound to form the intermediate ring (305) radially inside the intermediate ring (305) and to feed it to the first coiling device (95), - wherein the first coiling device (95) is designed to wind the finished rolled strip (80) onto the first mandrel (90) into a coil (85), - wherein the first belt feed (100) is pivotable between a starting position and a conveying position about a second pivot axis (280), - wherein the second pivot axis (280) is aligned parallel to the winding axis (140), - wherein the first strip feed (100) is designed to convey the finished rolled strip (80) along a first straight line (285), - wherein the second strip feed (105) is designed to guide the finished rolled strip (80) radially inward along a second straight line (290) in the direction of the first coiling device (95), - wherein in the start-up position, the first tape feed (100) and the second tape feed (105) are aligned in alignment with one another, so that the first straight line (285) and the second straight line (290) are arranged to overlap, wherein in the conveying position, the first tape feed (100) is arranged pivoted relative to the start-up position such that the first straight line (285) is aligned tangentially to the winding axis (140).

2. Reel system (45) according to claim 1, - wherein the strip storage device (110) has at least one first roller arrangement (155) with a plurality of support rollers (210) arranged offset in the circumferential direction around the winding axis (140), - wherein the support rollers (210) are preferably arranged on a first circular path around the winding axis (140), - wherein the support rollers (210) roll on the finished rolled strip (80), - wherein the strip storage device (110) is designed to wind the finished rolled strip (80) on a second circular path (310) around the winding axis (140) to the intermediate ring (305) while being guided along the support rollers (210).

3. Reel system (45) according to claim 2, - wherein the tape storage (110) comprises a carrier unit (160) with at least a first carrier (165), a carrier joint (175) and a second carrier (170), - wherein the support joint (175) connects the first support (165) to the second support (170), - wherein the second carrier (170) is pivotable relative to the first carrier (165) between a first position and a second position, - wherein a first sub-assembly of the first roller assembly (155) is arranged on the first carrier (165) and a second sub-assembly of the first roller assembly (155) is arranged on the second carrier (170), - wherein in the first position, the first carrier (165) and the second carrier (170) define on the outside an annular gap (250) in which the intermediate ring (305) can be arranged, wherein in the second position the second carrier (170) is pivoted away from the first carrier (165).

4. Reel system (45) according to claim 3, - wherein the first carrier (165) and / or the second carrier (170) are partially annular, - wherein the first carrier (165) and / or the second carrier (170) are arranged in the first position on a common third circular path, - and / or - wherein the first support (165) encloses a first angle of approximately 150° to 180° inclusive, - and / or - wherein the second support (170) encloses a second angle of approximately 150° to 180° inclusive.

5. Reel system (45) according to one of claims 2 to 4, - wherein the strip storage (110) comprises a carrier unit (160) with at least one first carrier (165) and an adjusting device (225), - wherein the adjusting device (225) connects the support roller (210) to the first carrier (165), - wherein the adjusting device (225) is designed to move the support roller (210) between a first radial position and a second radial position arranged radially outwardly of the first radial position.

6. Reel system (45) according to one of the preceding claims, - comprising at least one second separating device (116), in particular a pair of scissors, - wherein the separating device (116) is arranged radially between the first coiling device (95) and the second strip feed (105), - wherein the second separating device (116) is attached to the component carrier (150), - wherein the second separating device (116) is designed to separate the finished rolled strip (80).

7. Reel system (45) according to one of claims 2 to 6, - wherein the tape storage (110) has a first input roller (215), - wherein the finished rolled strip (80) can be introduced from the first strip feed (100) into the strip storage (110) at the first input roll (215), - wherein the first input roller (215) is designed to guide the finished rolled strip (80) in its conveying direction, - wherein the first input roller (215) has a first magnetic device (220) which is designed to hold the finished rolled strip (80) on the first input roller (215) by a first magnetic connection.

8. Reel system (45) according to one of claims 2 to 7, - wherein the second tape feed (105) has a second input roller (235), - wherein the second input roller (235) is arranged on the input side of the second strip feed (105) with respect to the conveying direction of the finished rolled strip (80), - wherein the second input roller (235) is designed to deflect the finished rolled strip (80) in its conveying direction from the strip storage device (110) in the direction of the first coiler device (95), - wherein the second input roller (235) has a second magnetic device (236) which is designed to hold the finished rolled strip (80) on the second input roller (235) by a second magnetic connection.

9. Method for operating a reel system (45), preferably according to one of the preceding claims, - wherein a finished rolled strip (80) is fed into the coiling system (45) via a first strip feed (100) of the coiling system (45), - wherein the first strip feed (100) transports the finished rolled strip (80) to a strip storage (110) of the coiler system (45), - wherein the strip storage device (110) winds the finished rolled strip (80) into an intermediate ring (305) which extends around a winding axis (140), - wherein a second strip feed (105) unwinds the finished rolled strip (80) from the intermediate ring (305) on a side opposite the first strip feed (100) in the radial direction and guides it in the direction of a first coiling device (95) of the coiling system (45), - wherein the first coiling device (95) winds the finished rolled strip (80) into a coil (85), - wherein the first belt feed (100) is pivoted into the start position, - wherein the second tape feed (105) and the first tape feed (100) are aligned with each other so that the first straight line (285) and the second straight line (290) are arranged to overlap, - wherein in the start-up position, the finished rolled strip (80) is guided via the first strip feed (100) and second strip feed (105) to the first coiling device (95) and a start of the coil (85) is wound, - wherein the first strip feed (100) is pivoted into the conveying position and the drive motor (145) is activated so that the second strip feed (105) and the first coil device (95) rotate about the winding axis (140).

10. Method according to claim 9, - wherein the first strip feed (100) guides the finished rolled strip (80) from radially outside to the intermediate ring (305) and the strip storage (110) winds the finished rolled strip (80) onto the intermediate ring (305) from radially outside relative to the winding axis (140).

11. Method according to claim 9 or 10, - wherein the first coiling device (95) and the second strip feed (105) are rotated about the winding axis (140) when the finished rolled strip (80) is coiled on a first mandrel (90).

12. Method according to one of claims 9 to 11, - wherein the finished coiled coil (85) is removed from a first mandrel (90), while at the same time the finished rolled strip (80) is wound up to form the intermediate ring (305).

13. Method according to one of claims 9 to 12, - wherein the finished rolled strip (80) wound to form the intermediate ring (305) rotates around the winding axis (140) in the strip storage (110) at a first circumferential speed (co 1), - wherein a second circumferential speed (o2) of the component carrier, the first coil device (95) and the second strip feed (105) about the winding axis (140) is different from the first circumferential speed (co 1).

Images