WO2010115635A2

WO2010115635A2 - Winding aid, strip coiler and rolling device

Info

Publication number: WO2010115635A2
Application number: PCT/EP2010/002220
Authority: WO
Inventors: Georg Berg
Original assignee: Hpl-Neugnadenfelder Maschinenfabrik Gmbh
Priority date: 2009-04-09
Filing date: 2010-04-09
Publication date: 2010-10-14
Also published as: EP2416902B1; DE102009029918A1; EP2416902A2; WO2010115635A3

Abstract

The invention relates to a winding aid (6, 7) for a strip coiler (11, 12) for a metal strip, designed in particular to press a hot rolled magnesium strip (2) at temperatures of between 300 °C and 450 °C against the strip coiler (11, 12). According to the invention, a support body (13) is provided perpendicularly to the longitudinal axis of the strip coiler (11, 12) so that it can be moved between a release position and a winding position, said support body (13) having a plurality of pressure rollers (18, 19, 20, 21) that can be adjusted by means of pressure cylinders (14, 15, 16) for introducing and pressing the first and/or last layer of a metal strip to or against the strip coiler (11, 12) or against the wound strip layers. In the winding position, the pressure rollers (18, 19, 20, 21) can be pressed directly against the strip coiler (11, 12) or the wound metal strip in such a way that the metal strip can be wound and/or unwound without slippage. The invention also relates to strip coiler comprising a coiler mandrel with an outer thermal protection covering that acts on the metal strip.

Description

On winding aid, tape reel and rolling device

The invention relates to a Anwickelhilfe for a strip reel for metal strip, in particular for cold and hot rolled strips of steel and non-ferrous materials, further designed in particular for pressing a hot rolled magnesium strip with temperatures between 300 ⁰ C and 450 ⁰ C to the band reel. Moreover, the present invention relates to a band reel for winding and / or unwinding of metal strip, in particular for cold and hot rolled strips of steel and non-ferrous materials, further especially for winding and / or unwinding of hot rolled magnesium strip with temperatures between 300 ⁰ C and 450 ⁰ C. Finally, the present invention relates to a rolling device, in particular for a reversing operation, more particularly for finish rolling a magnesium strip at temperatures of the magnesium strip between 300 ⁰ C and 450 ⁰ C in several rolling passes, with at least one Anwickelhilfe and / or at least one Band reel in each case of the aforementioned type.

Riemenumschlinger are known as Anwickelhilfe from the prior art. The known Riemenumschlinger are part of a reel device, which is designed to appli-roll rolled sheet on a coiler mandrel to a coil. For winding spreading segments of the coiler mandrel can be deflected radially outward such that the outer circumference of the expansion segments forms a circle. To uncoil a coil, the coiler mandrel must be smaller in diameter than the inner diameter of the coil to accommodate the coil. For this purpose, two diameters can usually be targeted in a reel mandrel.

The Riemenumschlinger bring the beginning of an incoming from a rolling metal strip with a coiler drum or a coiler mandrel of a band reel in operative connection, and until so many tape turns are on the reel drum, that a slip-free coiling of the metal strip is ensured without additional contact force. In order for the wrap angle of the belt of the belt wrapper to be as safe as possible to ensure that the beginning of the belt into the first belt wrap is as large as possible, the belt is turned around a roller-mounted folding bridge which, after the belt wrapper has moved against the capstan drum, is folded over. In addition, to achieve a slip-free

BE3TÄTlGUNGSKOPrE tallbandes on the reel drum of the belt additionally be brought into operative connection with a belt tensioner. The Riemenumschlinger described are due to the limited temperature resistance of the belts used mainly in the cold rolling of metal strips used.

Magnesium belts can advantageously be produced from cast strip having a material thickness of preferably less than 20 mm by means of cast roll or thin strip casting methods with or without subsequent forming. The casting belt solidifies with comparatively high cooling rates and can be wound up into coils. To produce the finished end product, the semifinished product is optionally heat treated and then formed, preferably by rolling with or without subsequent roll forming. The cast or cast-rolled molding materials are preferably heated rapidly to a suitable for rolling preheating temperature between 150 and 500 ⁰ C. The magnesium bands are then manufactured by hot rolling.

To improve the forming properties of magnesium tapes, it is known from the prior art, rolling magnesium tapes with temperatures between 300 ⁰ C and 450 ⁰ C in several rolling passes finished.

In contrast to cold-rolled strip production, the belt wrappers known from the prior art can not be used or can only be used to a limited extent in hot strip production of, for example, magnesium tapes in order to ensure slip-free unwinding or uncoiling of the hot metal strip. If the metal strip is to be finish-rolled in several rolling passes in a roll stand operated in reversing operation, strong cooling of the metal strip during winding and unwinding should be avoided if possible so as not to impair the forming properties of the metal strip. From the prior art is known in this context to rewind the hot metal strip at least after the first stitch on a warm reel and to keep it at the respective forming temperature. The forming temperature is preferably at least 300 ⁰ C. Keeping warm the tape reel leads to a design overhead and increases the cost of tape production.

Object of the present invention is to provide a Anwickelhilfe, a tape reel and a rolling device in each case of the type mentioned to provide that have a simple structural design and allow easy and cost-effective winding and unwinding of hot metal strips, and there is no or only a slight deterioration of the forming properties of the band reel on and / or unwinding of the metal strip Metal strip should come.

The above object is achieved by a Anwickelhilfe with the features of claim 1.

The Anwickelhilfe invention provides for the use of pressure rollers, which are pressed so long with a constant force against the coiler mandrel or against the coiler mandrel tape layers, guaranteed by friction between reel mandrel and tape start a slip-free further coiling of the tape without the force of the pressure rollers is. If hot-rolled strips are to be wound at high temperature, a plurality of adjacent rolling segments may preferably be used as pressure rollers to limit the thermal load, and no continuous rollers or cylindrical rollers extending over the entire pressure range. The diameter of a roll segment according to the invention is then preferably greater than the width of the roll segment, based on the roll. Here, according to the invention, a corresponding control device can be provided in order to readjust the pressure rollers by the amount of the strip thickness, if the diameter of the coil in the area of the strip tip suddenly changes by the amount of the strip thickness at the beginning of a new strip layer.

The Anwickelhilfe invention has a simple construction. By the pressure rollers, the slip-free coiling of the tape is ensured in a simple manner, it can be ensured by using pressure rollers made of a (high) temperature-resistant material that the winding or unwinding of metal strips with temperatures of more than 300 ⁰ C to preferably 450 ⁰ C or more without damage or destruction of the pressure rollers is possible. By moving the support body from a release position to a Anwickelposition and then hiring the pressure rollers against the tape reel or the metal strip required for a slip-free winding and unwinding of the metal strip pressure forces can be applied. By Verfahrmöglichkeit to the side or, preferably, upwards, a free access to the tape reel for maintenance and Assembled or guaranteed in case of accidents. The space requirement of an upwardly movable Anwickelhilfe is also relatively low. A belt, as used in the known Riemenumschlingern is not provided in the Anwickelhilfe invention.

To achieve the above object, it is provided in a band reel of the type mentioned that the tape reel has a coiler mandrel, wherein the coiler mandrel has an external heat protection sheathing or insulation. Preferably, the thermal barrier coating has a total heat transfer coefficient of less than 30 WVm ² K, preferably less than 20 W / m ² K, more preferably less than 10 W / m ² K, based on the total thickness of the insulation.

At this point, the invention is based on the basic idea of allowing the reel mandrel insulation to be wound or unwound from metal strip onto a strip reel, even at relatively high metal strip temperatures, without any temperature-induced damage or destruction of guide elements and fits in the interior of the coiler mandrel, which can occur at temperatures above 100 ⁰ C, must be feared. Moreover, the heat dissipation from the metal strip is reduced by the insulation in the coiler mandrel, so that there is less cooling of the metal strip during winding and unwinding of the metal strip. A heating of the tape reel according to the invention and / or the metal strip after unwinding and before entering the mill stand is preferably not required, but may in principle also be provided. Moreover, the insulation according to the invention can be retrofitted in a simple manner even in otherwise not usable for the winding of hot metal bands tape reels.

The foregoing aspects and features of the present invention, as well as the aspects and features of the present invention described below, can be implemented independently of one another, but also in any combination. Further advantages, features, characteristics and aspects of the present invention will become apparent from the following description of preferred embodiments with reference to the drawing. The invention is not limited to the illustrated embodiments. Show it: 1 shows an illustration of a reversing rolling device with two inventive winding start aids and two tape reels according to the invention,

2 is a view of one of the Anwickelhilfen shown in Figure 1 in the Anwickelposition in the longitudinal direction of the band reel.

2 the Anwickelhilfe shown in Fig. 2 in a view perpendicular to the longitudinal axis of the band reel from behind,

4 is a sectional view of the Anwickelhilfe shown in FIG. 2 along the line A-A of FIG. 3,

Fig. 5 is a cross-sectional view of a tape reel according to the invention with an outer insulating sleeve and

Fig. 6 is a plan view of the outer insulating sleeve in the band reel shown in Fig. 5.

In Fig. 1, a rolling apparatus 1 for the reversing operation, for example, for finish rolling a magnesium strip 2 at temperatures of the magnesium strip 2 between 300 ⁰ C and 450 ⁰ C shown in several rolling passes. The Reversierwalzvorrichtung shown in the drawing, the Anwickelhilfe shown and the tape reel shown are not limited to the use for Wai- zen, coiling and coiling of hot rolled magnesium tapes.

The band thickness of the magnesium band can be between 0.5 mm to 8 mm. The rolling apparatus 1 has a rolling stand 3 and two reel devices 4, 5. Each reel device 4, 5 has a Anwickelhilfe 6, 7, which are formed substantially the same. For raising a coil 8 of wound metal strip 2, a coil lifting device 9, 10 is provided below each piecing aid 6, 7. The roll stand 3 and the coil lifting devices 9, 10 are known per se from the prior art and have a constructive design familiar to the person skilled in the art. The roll stand 3 can be operated in reversing operation, in order to achieve the respectively required reduction in the thickness reduction or deformation taking into account the particular deformation behavior of magnesium strip 2. In this case, the temperature of the magnesium strip 2 during rolling and during winding or unwinding on two schematically shown in Fig. 1 tape reels 11, 12 of the coiler means 4, 5 between 300 ⁰ C to 450 ⁰ C to ensure good forming properties. The band reels 1 1, 12 may be driven to the magnesium belt 2 up or unwind and to transport in the direction of the rolling stand 3. Alternatively or additionally, the propulsion of the magnesium strip 2 can be effected by means of corresponding devices of the roll stand 3.

The finish rolling of the magnesium strip 2 takes place starting from a magnesium (before) strip 2 in several rolling passes. In the embodiment shown in FIG. 1, the two band reels 11, 12 can be switched over between a unwinding and a winding operation. The magnesium strip 2 is reversibly rolled in the roll stand 3. The magnesium strip 2 is unwound from one of the band reels 11, 12, then passes through the rolling stand 3 and is finally rewound on the other of the reel 11, 12. Thereafter, the operating direction is reversed. The magnesium strip 2 is thus unwound on the next pass from the other of the band reel 11, 12, passes through the rolling stand 3 and is then rewound from one of the band reel 11, 12. It is not shown that in order to compensate for heat losses occurring in the course of finish rolling and to ensure sufficient deformability of the magnesium strip 2, the rolling device 1 can comprise at least one heating device, not shown in detail, such as a furnace for the magnesium strip 2.

In the first rolling pass, a magnesium strip 2 is unwound from a coil 8, which is located on the strip reel 11, and passes through the rolling stand 3, the direction of advance of the strip being marked by X. The Anwickelhil- Fe 6 of this tape reel 11 is raised to a release position. After passing through the roll stand 3, the magnesium strip 2 is wound on the band reel 12 on the other side of the roll stand 3, the applicator aid 7 being moved down to a winding position. By Anwickelhil- fe 7, the incoming magnesium tape 2 is pressed against the tape reel 12 until there are so many tape windings on the tape reel 12 that slip-free further coiling of the magnesium strip 2 is ensured without additional contact force. Then the Anwickelhilfe 7 is raised in the release position. If the magnesium strip 2 has been completely rolled in the roll stand 3, the rolling direction 7 is reversed and the magnesium strip 2 is fed again from the strip reel 12 to the roll stand 3 for the second pass and then wound on the strip reel 1 1 until the magnesium strip 2 the second roll pass completely absorbed. In this case, the Anwickelhilfe 6 then ensures the slip-free winding of the magnesium strip 2. This procedure is continued for the subsequent rolling passes until the magnesium strip 2 has reached a predetermined final thickness.

The Anwickelhilfen 6, 7 have a substantially same structure, so that below the structure is described only for a Anwickelhilfe 6, 7 in detail.

The Anwickelhilfe 6 has a perpendicular to the longitudinal axis of the band reel 1 1 between a release position, which is shown in Fig. 1 and a Anwickel- position, which is shown for the second Anwickelhilfe 7 shown in FIG. 1, in the vertical direction and herverfahrbar stored Supporting body 13, wherein the support body 13 has a plurality of preferably by means of pressure cylinders 14, 15, 16 adjustable pressure rollers 18, 19, 20, 21 for insertion and pressing of the first and last layers of tape of the magnesium tape 2 to the tape reel 11 and to already wound band layers. The pressure rollers 18 to 21 are made of a temperature-resistant material, which is stable at least at belt temperatures of 300 ⁰ C to 450 ⁰ C. As a result, in the Anwickel- position the pressure rollers 18 to 21 are pressed directly against the tape reel 11 and the wound magnesium tape 2, without damaging or destroying the pressure rollers 18 to 21 must be feared due to the high temperatures of the magnesium strip 2. It is understood that the pressure rollers 18 to 21 can, if necessary, be made more or less strong to ensure a slip-free winding of the magnesium tape 2 on the tape reel 11.

The support body 13 is shown in FIG. 3 on a carriage 22 in the vertical direction to the tape reel 11 along a rack 23 of a support frame 24 movably guided. For the process of the support body 13, a correspondingly controlled drive 25 is provided. On the outside 26 facing the band reel 11, the support body 13 has an arc contour that extends over an arc length with an associated arc angle α of approximately 100 ° to 130 °, preferably approximately 120 °. At the end of the arc contour, an arcuate bascule bridge 27 is pivotally mounted on the support body 13, wherein the pressure cylinder 28 is provided for pivoting. The arc contour of the bascule bridge extends over an arc length with associated arc angle ß of about 120 ° to 150 °, preferably about 130 °. By pivoting the bascule bridge 27 from a release position, which is shown in Fig. 1 for the Anwickelhilfe 6, in a Andrückstellung, which is shown in Fig. 1 for the Anwickelhilfe 7, the band reel 11 is preferably about 250 ° concentrically surrounding space created. As a result, the slip-free winding of the magnesium tape 2 can be ensured on the tape reel 11 when the Anwickelhilfe 6 is in the Anwickelposition. When unwinding the magnesium strip 2 from the coil 8, the Anwickelhilfe 6 is raised, however, and the bascule bridge 27 pivoted on. As a result, a disability during unwinding of the magnesium strip 2 is excluded from the coil 8 by the Anwickelhilfe 6 in a simple manner.

At the other end of the provided on the outer side 26 of the support body 13 arc contour at least one bearing member 29 is pivotally mounted on the support body 13. The bascule bridge 27 has at its outer end a pivotally mounted on the bascule bridge 27 bent guide arm 30.

A first pressure roller 18 is provided in the region of the articulation of the bascule bridge 27 to the support body 13, wherein the pressure roller 18 can be adjusted in the radial direction in order to apply a sufficiently large pressure force against the tape reel 11 and a tape layer in a simple manner.

At the lower end of the bearing part 29, the second pressure roller 19 is mounted. The bearing part 29 can be pivoted over the pressure cylinder 15 in order to press the pressure roller 19 more or less strongly against the tape reel 11 or the magnesium tape 2. The bearing member 29 is in addition to the articulation at the end of the arcuate portion on the outer side 26 of the support body 13 via two articulated arms 32, 33 hinged to the support body 13. This leads to a stable attachment of the bearing part 29 to the support body 13 and allows the transmission of high contact forces on the tape reel 11 and the magnesium tape. 2

The third pressure roller 20 and the fourth pressure roller 21 are provided in the region of the articulation of the guide arm 30 to the bascule bridge 27 and in the central region of the guide arm 30. By the pressure cylinder 16 can be the guide arm 30 and thus the pressure rollers 20, 21, if necessary, more or less strongly press against the magnesium belt 2 and the tape reel 11.

On the support body 13, a plurality of rollers 34 are provided in the region between the first pressure roller 18 and the second pressure roller 19, which are provided to reduce the sliding friction during winding or unwinding of the magnesium tape 2 on the tape reel 11 and ensure a uniform pressure distribution. Further rollers 35 are provided on the bascule bridge 27 in the region between the first pressure roller 18 and the third pressure roller 20. The rollers 34, 35 are formed as rolling segments, wherein, preferably, the diameter of a roll is greater than the width of the roll. A plurality of rollers 34, 35 are arranged side by side. Thereby, the thermal load of the rollers 34, 35 when winding or Abwic- reduced by hot-rolled strips. The pressure rollers 18, 19, however, are designed as elongated cylindrical rollers, wherein the diameter of the cylindrical roller is smaller than the width of the cylindrical roller. The width of the pressure rollers 18, 19 corresponds to the multiple width of the rollers 34, 35th

The support body 13 has two longitudinally spaced apart from the band reel 11 side plates 36, 37, wherein each side plate 36, 37 in the direction of the band reel 11 has an arcuate recess or an arc contour and wherein on each side plate 36, 37 each have a bascule bridge 27th and in each case a bearing part 29 are pivotally mounted. The two hinged bridges 27 embrace the band reel 11 in the Anwickelposition and thus ensure a uniform distribution of the contact pressure.

As is further apparent from FIG. 3, the pressure roller 18 extends over a length which corresponds to at least half the distance, preferably approximately 70% of the distance, between two hinged bridges 27 spaced apart from one another in the longitudinal direction of the band reel 1 1. The pressure roller 18 is rotatably mounted about a bearing axis Y ₁ on two lateral bearing parts 18a, 18b. The bearing parts 18a, 18b in turn are rotatably mounted on the side plates 36, 37 about the bearing axis Y ₂ . The bearing parts 18a, 18d are connected to each other via a shaft 18c. The shaft 18c passes through a thrust part 18d, to which the impression cylinder 14 engages. When the printing cylinder 14 is extended, the bearing parts 18a, 18b are pivoted about the bearing axis Y ₂ , which leads to a radial movement of the pressure roller 18 in the pressure region between the support body 13 and the hinged bridges 27. By extending the printing cylinder 14 can thus be applied a sufficiently high compressive force on the tape reel 11 and the magnesium tape 2. About the pressure roller 18 so that the side plates 36, 37 are connected to each other, which contributes to a very stable construction of the Anwickelhilfe 6 shown. In addition, the folding bridges 27 may each be connected to each other at its outer end via a bearing shaft of the pressure roller 20.

For supporting the rollers 35 between the hinged bridges 27 bearing housing 38 are provided, which are fixed to the hinged bridges 27 interconnecting cross members 39. In addition, rows of three rollers 35 and six rollers 35 are alternately provided. This results in a uniform force distribution during winding and unwinding of the magnesia band 2.

In Fig. 5 is a cross-sectional view of the tape reel 1 1 is shown, wherein the construction of the tape reel 1 1 corresponds to the structure of the tape reel 12 and the following example, only the construction of the tape reel 11 is described. It is understood that the structural design of the band reel 11 is not limited to the embodiment shown in Fig. 5.

The band reel 1 1 has a reel mandrel with, by way of example, four expansion segments 40, which cooperate with a reel shaft, not shown, and can be deflected radially outward in order to change the diameter of the coiled mandrel. The coiler mandrel has an outer heat-shielding jacket, the thermal-insulation jacket having a total heat transfer coefficient of less than 30 W / m ² K, preferably less than 20 W / m ² K, particularly preferably less than 10 W / m ² K, or less. The insulation is preferably designed in such a way as regards the number of insulating layers, the insulating materials used and the thickness of the insulating layers that at an external temperature of the thermal insulation Sheath of about 300 ⁰ C to 450 ⁰ C, in particular of about 400 ⁰ C, an internal temperature of the heat-insulating shell of less than 100 ⁰ C, preferably less than 80 ⁰ C, in particular of about 70 ⁰ C, is achieved. This ensures that it can not affect the function of the coiler mandrel due to temperatures above about 100 ⁰ C when coiling of hot-rolled metal strips, especially magnesium strips 2, with temperatures between 300 ⁰ C to 450 ⁰ C. When using the described tape reel 11 in the rolling device 1 insulation is thus provided, which leads on the one hand to a reduced heat dissipation from the coil and on the other hand to protect the mechanics of the expandable reel mandrel from excessive thermal stress.

The thermal insulation jacket may have a multilayer structure, wherein, according to FIG. 5, two insulating layers 41, 42 with different thermal conductivity are provided. In principle, however, it is also possible for the thermal insulation jacket to have only one insulating layer 41, 42 which is correspondingly thicker or may also comprise more than two insulating layers.

In the band winder 11 shown in FIG. 5, at least one outer insulating layer made of a ceramic material, in particular based on calcium silicate, is provided. The insulating material may be, for example, the product "K-Therm", preferably "K-Therm CS 400" from AGK Hochleistungswerkstoffe GmbH from Dortmund. Alternatively, a product with trade name "K-Therm AS" can be used, which is a glass fiber reinforced fiber cement insulation material. The thermal conductivity of the outer insulating layer 41 may be less than 1 W / mK, preferably less than 0.5 W / mK, in particular about 0.3 W / mK or less.

In addition, the thermal insulation jacket according to FIG. 5 has at least one inner insulating layer 42, which is formed by air-filled chambers. The outer insulating layer 41 and the inner insulating layer 42 are each arranged between concentric to the longitudinal axis of the band reel 1 1 arranged carrier layers 43, 44, 45 made of a material having a high strength, in particular of metal, more particularly between steel sleeves. As a result, a sufficient strength of the heat protection jacket is guaranteed and Deformations of the heat protection jacket during coiling of the magnesium strip 2 are prevented.

Air chambers are formed between the carrier layers 44, 45, which are connected to one another via metal webs 48 in order to increase the rigidity. The air chambers may extend in the longitudinal direction over the entire length of the band reel 1 1 and form flow channels for a forced air flow, to allow a heat transfer during reel operation from the interior of the tape reel 11 into the environment. To generate an air flow, additional units, such as compressors or blowers, can be connected.

It is understood that the layer structure shown in Fig. 5 does not have to be provided in every case. For example, the inner insulating layer could be formed by a physical insulating material, while the outer insulating layer is formed of air chambers.

The thickness of the carrier layer 43, 44, 45 is preferably between 5 mm to 20 mm, in particular approximately 10 mm to 15 mm. In the embodiment illustrated in FIG. 5, the thickness of the carrier layers 43, 44, 45 decreases in the radial direction to the outside. In principle, however, it can also be provided that the two outer carrier layers 43, 44 have an equal thickness of preferably approximately 10 mm and the radially inner carrier layer 45 have a thickness of approximately 15 mm.

The thickness of the outer insulating layer 41 is preferably between 20 mm to 40 mm, in particular about 30 mm. The thickness of the inner insulating layer 42 is larger and may be between 30 mm to 50 mm, in particular about 40 mm. As a result of the construction shown, a high heat protection effect can be ensured with adequate strength of the thermal insulation jacket. Due to the selected layer structure of the heat protection jacket can be ensured at an external temperature of the outer steel sleeve as a support layer 43 of about 400 ⁰ C that the temperature at the expansion segments 40 and the maximum internal temperature of the inner steel sleeve as the inner support layer 45 has a temperature of 100 Does not exceed ⁰ C and, preferably, in the order of only about 70 ⁰ C. In the embodiment shown in FIG. 5, the support layers 43 to 45, preferably designed as steel sleeves, are screwed together and with the expansion segments 40. The thermal insulation sheath is formed as connected to the coiler mandrel, in particular screwed, insulating sleeve and has a plurality of sleeve segments 46. The sleeve segments 46 can be positively connected to each other in the circumferential direction via a toothing as shown in FIG. For screwing the sleeve segments 46 with the expansion segments 40 and for screwing the carrier layers 43 to 45 together, a plurality of threaded openings 47 are provided in the sleeve segments 46. This is shown in FIG.

The illustrated and described Anwickelhilfen and tape reel can be used advantageously in particular for finish rolling a magnesium strip at temperatures of the magnesium strip between 300 ⁰ C and 450 ⁰ C in several WaIz stitches in a reversing rolling. However, the Anwickelhilfen and tape reel described are not to be used for the Aufbzw. Uncoiling of hot rolled magnesium bands limited, but can be used advantageously for winding or unwinding of other metal bands with higher or lower temperatures.

Claims

claims:

1. Anwickelhilfe (6, 7) for a band reel (11, 12) for metal strip, in particular designed for pressing a hot rolled magnesium strip (2) with temperatures between 300 ⁰ C and 450 ⁰ C to the band reel (11, 12), with a Supporting body (13) mounted perpendicular to the longitudinal axis of the band reel (11, 12) between a release position and a winding position, wherein the support body (13) has a plurality of pressure rollers (18, 18) which are preferably adjustable by means of pressure cylinders (14, 15, 16). 19, 20, 21) of a temperature-resistant at least at strip temperatures of 300 ⁰ C to 450 ⁰ C material for inserting and pressing the first and / or last band layers of a metal strip to the tape reel (11, 12) and to the wound tape layers, wherein in the Anwickelposition the pressure rollers (18, 19, 20, 21) directly against the tape reel (11, 12) or the aufgewic- celted metal strip are pressed in such a way that a slip-free Aufwickel Eln and / or unwinding of the metal strip is ensured, wherein the support body (13) on the band reel (11, 12) facing the outside (26) has a circular segment-shaped arc contour and at the end of the arc contour at least one circular segment-shaped bascule bridge (27) pivotally the support body (13) is mounted and wherein by pivoting the bascule bridge (27) from a release position into a Andrückstellung the band reel (11, 12) concentrically surrounding space is created.

2. Anwickelhilfe according to claim 1, characterized in that the supporting body (13) in the vertical direction on a support frame (24) is movably mounted, wherein, preferably, the support body (13) from above to the tape reel (11, 12) is approached ,

3. Anwickelhilfe according to claim 1 or 2, characterized in that a band reel (11, 12) about 240 ° to 260 °, in particular about 250 °, concentrically surrounding space is created.

4. Anwickelhilfe according to any one of the preceding claims, characterized in that at the other end of the sheet contour at least one bearing part (29) is pivotally mounted on the support body (13).

5. Anwickelhilfe according to any one of the preceding claims, characterized in that the bascule bridge (27) by a pivotally mounted on the bascule bridge (27) guide arm (30) is extended.

6. Anwickelhilfe according to any one of the preceding claims, characterized in that at least one first pressure roller (18) in the region of the Anlen- kung of the bascule bridge (27) to the support body (13) is provided.

7. Anwickelhilfe according to any one of the preceding claims, characterized in that at least one second pressure roller (19) on the bearing part (29) is mounted.

8. Anwickelhilfe according to any one of the preceding claims, characterized in that at least one third pressure roller (20) in the region of the articulation of the guide arm (30) on the bascule bridge (27) and / or a fourth pressure roller (21) in the central region of Guide arm (30) on the guide arm (30) is mounted.

9. Anwickelhilfe according to any one of the preceding claims, characterized in that on the support body (13) in the region between the first pressure roller (18) and the second pressure roller (19) a plurality of rollers (34) is provided.

10. Anwickelhilfe according to any one of the preceding claims, characterized in that on the bascule bridge (27) in the region between the first pressure roller (18) and the third pressure roller (20) a plurality of further rollers (35) is provided.

11. Anwickelhilfe according to any one of the preceding claims, characterized in that the supporting body (13) has two in the longitudinal direction of the band reel (11,

12) spaced apart and arranged perpendicular to the longitudinal axis of the band reel side plates (36, 37), wherein each side plate (36, 37) on the band reel (11, 12) directed end face has an arc contour and wherein on each side plate (36, 37 ) in each case a hinged bridge (27) and, preferably, in each case a bearing part (29) are pivotally mounted.

12. Anwickelhilfe according to any one of the preceding claims, characterized in that extending at least one pressure roller (18, 19, 20, 21) over a length which is at least half the distance, preferably about 70% of the distance, between two in the longitudinal direction of the Bandhaspels spaced flap bridges (27) corresponds.

13. band reel (11, 12) for winding and / or unwinding of metal strip, in particular for winding and / or unwinding of hot rolled magnesium strip (2) with temperatures between 300 ⁰ C and 450 ⁰ C, with a coiler mandrel, wherein the coiler mandrel has an outer heat protection sheath acting against the metal band.

14. A tape reel according to claim 13, characterized in that at an outside temperature of the heat-insulating jacket of about 300 to 450 ⁰ C, in particular of about 400 ⁰ C, the maximum internal temperature of the heat-shielding sheath less than 100 ⁰ C, preferably less than 80 ⁰ C, in particular about 70 ⁰ C, is.

15. strip reel according to claim 13 or 14, characterized in that the heat-shielding jacket has a multilayer structure and that at least two concentric with the longitudinal axis of the band reel arranged insulating layers (41, 42) are provided with different thermal conductivity.

16. Tape reel according to one of the preceding claims, characterized in that at least one outer insulating layer (41) comprises a ceramic material, in particular based on calcium silicate.

17, tape reel according to one of the preceding claims, characterized in that the thermal conductivity of the outer insulating layer (41) is less than 1 W / mK, preferably less than 0.5 W / mK, in particular about 0.3 W / mK or less ,

18. Tape reel according to one of the preceding claims, characterized in that at least one inner insulating layer (42) is formed by an air layer.

19. Bandhaspel according to any one of the preceding claims, characterized in that the insulating layer (41, 42) arranged between concentric to the longitudinal axis of the band reel carrier layers (43, 44, 45) made of a material of high strength, in particular of metal, more particularly between steel sleeves, is arranged.

20. strip reel according to one of the preceding claims, characterized in that two carrier layers (44, 45) via metal webs (48) are interconnected, and that, preferably, between the carrier layers air-filled chambers are formed.

21, tape reel according to one of the preceding claims, characterized in that the thickness of the carrier layer (43, 44, 45) between 5 mm to 20 mm, in particular about 10 mm to 15 mm.

22, tape reel according to one of the preceding claims, characterized in that the thickness of the outer insulating layer (41) between 20 mm to 40 mm, in particular about 30 mm.

23, tape reel according to one of the preceding claims, characterized in that the thickness of the inner insulating layer (42) between 30 mm to 50 mm, in particular about 40 mm.

24. Tape reel according to one of the preceding claims, characterized in that the carrier layers (43, 44, 45) are screwed together.

25. Tape reel according to one of the preceding claims, characterized in that the heat protection sheath is formed as connected to the coiler mandrel insulating sleeve.

26. A tape reel according to one of the preceding claims, characterized in that the heat-protective casing has a plurality of sleeve segments (46), wherein, preferably, in the circumferential direction adjacent sleeve segments (46) are positively connected to one another via a toothing.

27. A tape reel according to one of the preceding claims, characterized in that the coiler mandrel has a plurality of expansion segments (40) and that each expansion segment (40) with a sleeve segment (46) is connected.

28. rolling device, in particular for a Reversierbetrieb, further in particular for finish rolling a magnesium strip (2) at temperatures of the magnesium strip (2) between 300 ⁰ C and 450 ⁰ C in several rolling passes, with at least one Anwickelhilfe (6, 7) and / or at least a band reel (11, 12) each according to one of the preceding claims.