DE2606301A1 - Small coils of metal strip - welded to form one very long coil for continuous process operations such as rolling - Google Patents

Abstract

Plant for the coiling and uncoiling of strip at the inlet or the outlet of a work station, e.g. a rolling mill, galvanising or coating plant, the novelty being the use of at least one coiling and uncoiling drum employed to form a large coil of strip from several normal, transportable coils. The pref. process, used e.g. with a cold-rolling mill train, consists of joining several small coils together and winding them onto at least two drums from which they are fed into the mill then wound onto two more drums, after which the large coils are sheared to form small coils. The initial joining of the small coils is pref. achieved by welding. Provides extremely long coils of metal strip for feeding through continuous processes such as rolling or surface coating.

Description

Method and apparatus for unwinding and winding up a tape Die The invention relates to a method and a device for unwinding and winding of a belt, especially for continuous long-term operation.

To increase production in a composite cold rolling mill, a continuous electroplating od, the like. Must first the time to introduce the Guts are shortened. One method of solving this problem is that the weight of each roll of tape is increased, thereby increasing the ratio of the insertion time to reduce at rolling time, however, if that Roll weight not is increased quite considerably, the effect obtained is insufficient. By such an increase in the roll or tape weight, however, results in handling and transport problems, and the winding or unwinding machine must be particularly stable so that this method is not practical.

There were already the prerequisites for a fully continuous working plant examines with the tendency to the rear end of a tape with the The leading end of the next strip during the rolling or electroplating process weld in order to avoid the threading process, but since during welding the rolling or electroplating must be interrupted, becomes the continuous Operation of the system is interrupted and the quality of the product is impaired. That's why the known device was constructed so that when unwinding the tape in a Loop guided and released at the time of tape insertion and welding and then runs continuously through the rolling mill or electroplating plant, This facility has already increased production and output Episode.

However, this known device also has disadvantages, and there is a need for a fundamental.

Improvement, these disadvantages are the following: a) To at the time of Tape or roll change and sufficient tape unwound during welding To have available, a long loop wing must be provided, which is a lot Space required. This results in cost increases and thus a restriction des available too providing space. Z, B. is for a cold rolling mill a length of 500-500 m of rolled strip is required.

Even if the number of loops is quadrupled, a bypass car is required 75-100 m, 50 that the space requirement is between 100 and 125 m.

b) The rolled strip has a tendency to twist in the loop, which must be avoided at all costs. Such twists are particularly pronounced, if a corrosion protection oil is applied to the rolled strip, without corrosion protection there is a risk that the tape will rust, so in this case it is an immediate one Rolling or electroplating required, c) weld spots on the rolled strip should be recorded before rolling because the rolling speed is at these welding points must be reduced. However, the position of the loop bypass is constantly changing, and thus is a complicated system for detecting the entry of the weld spots in the rolling train required, d) It follows that the rolling of the rolled strip has to be interrupted again and again and complicated straightening processes carried out Need to become.

The finished rolled strip is wound up at the end of the rolling train.

To simplify further processing, it should be cut off like this that it can be wound into a tape with normal diameter. That Cutting off can only be done when the operation of the shear knife and the Belt speed are kept synchronous with each other.

For this it is again necessary to interrupt the belt movement or slow down, thereby adversely affecting the quality of the electroplated products and productivity will also be impaired.

For these reasons, it is also common practice at the end of the rolling mill to provide a loop or loop guide. The rolled strip runs for cutting and at the beginning of winding in the loop so that it is the processing equipment can go through one after the other. Such processes are carried out in continuous electroplating plants applied with great success. Furthermore, this process is carried out on a continuous basis Composite rolling mill applied, with the rolling speed temporarily related to the shear rate the continuously operating shear unit arranged on the outlet side of the rolling mill is reduced and increased again to continuous rolling after the shearing process, so that the facility working with this method increases production and achieved higher output.

However, there are disadvantages even with this device, if a loop bypass is used. Furthermore, every time a roll is fed the speed of the processing plant on the cutting speed be reduced, and after cutting, the speed must be increased again will. This causes difficulties again and again, and besides, one is through the recurring slowing down limits the increase in production, the task of The invention is to provide a method and a device for unwinding and winding a belt that eliminates the disadvantages of known methods and devices, operations can be simplified and productivity increased significantly.

In the method according to the invention, the introduced roll has normal weight, several such rolls are wound into a single large roll, and then a tape is unwound from this large roll and fed to the processing plant. Furthermore, at least two secondary rollers forming drums are provided, and the The time required to replace the secondary rollers can be shortened in that the Drums are used alternately for winding or unwinding, so that the device can perform tape unwinding with greater efficiency.

In the winding method according to the invention, the processed Tape wound into a large diameter roll, and then this roll is made trimmed so that normal-diameter rolls can be wound. Further there are at least two drums for winding the tape coming out of the processing plant comes, used, and the time required for this can be increased by using the drums for winding or unwinding are shortened, so that the device the Can perform tape winding with greater efficiency.

Usually this requires increasing the diameter of a roller an also sold means of transport; there is also the risk of that the role falls over during transport by means of a conveyor or cart when you Outside diameter is disproportionately large in relation to the bandwidth. The roll diameter itself is thereby usually limited to about 3-3.5 times the bandwidth. Although the rolls introduced according to the invention have normal size and weight, is it possible, in contrast to previously usual procedures, the size and to increase the weight of a roll about tenfold. This increases the number of threading operations reduced to a tenth of the usual number, reducing production capacity is increased. The same applies of course to those to be promoted after processing Roll.

The invention thus inter alia. a tape unwinding method specified, which plays a large role in sequential joining of several of one Unwinding unit for transportable rolls of unwound rolls formed with one another is then unwound from this large roll of tape and a processing plant is fed.

Embodiments of the invention are described below with reference to the drawing explained in more detail. 1 shows a schematic side view of the device according to the invention in connection with a composite cold rolling mill; Fig. 2 is a side view the inlet side of the device; Fig. 3 is a plan view of the device according to Fig. 2; 4 shows a side view to illustrate the intermediate winding and unwinding steps on the inlet side; 5 shows a cross section through the intermediate take-up drum; Fig. 6 shows a side view of the device on the outlet side; Fig. 7 is a plan view of FIG the device according to FIG. 6; 8 shows a side view to illustrate the up and down Intermediate unwinding steps on the outlet side; and Fig-. 9 is a side view of FIG Device according to the invention in connection with a reversing rolling mill.

Fig. 1 shows the inlet side of the device with a welding unit and an intermediate winding unit on the inlet side and its outlet side with a rolling mill, an intermediate winding unit on the outfeed side a shear unit. At the entry side are an unwinding unit 1, a pair of scissors 4, a welding unit 5 and intermediate winding units 7 and 8 are provided. At the outlet side is a rolling mill i 12, intermediate winding units 14 and 15, a pair of scissors 19 and a winding unit 21 are provided.

The primary roll 2 introduced into the take-up unit 1 is at its Front end straightened by a feeder 3 at the entry side of the rolling mill. The intermediate winding unit 7 on the inlet side starts winding. First, when the trailing end of the primary roll approaches the scissors 4, the intermediate winding takes place interrupted, and the roll is cut off at its rear end, so that the welding is easy to do.

Next, the next following primary role is at its front end in cut off the same way, and the first and the second roll are fused together by the welding unit 5, after which the winding is continued. In this way, around ten primary roles are connected to one another, after which the formation of the secondary roll 9 is finished. Meanwhile, the secondary role 10 rolled, and as soon as the rolling process of this secondary roll 10 is finished, begins the rolling of the secondary roll 9. The infeed side intermediate rewind drums 7 and 8 are used alternately for winding and unwinding in the manner explained, so that the strip can be fed to the rolling mill almost continuously. on the other hand the introduction of the secondary roller 10 takes place via a deflection roller 11 on the outlet side of the rolling mill, and as soon as the downstream intermediate take-up drum 14 with the Winding begins, the rolling mill exerts a tensile force on the strip, and the rolling process begins. In this case, the downstream intermediate take-up drum 14 can be a Tape into a large diameter roll, d. H. to a third roll 16, wind up, so that the secondary roll 10 can be rolled and wound up without slowing down.

After the third roll 17 has been wound up in this way, is they unwound again, trimmed by means of scissors 19 to form rolls with normal diameter, d. H. fourth reels 22, wound by the winding unit 21 and from a roller carriage 23 and a conveyor of the next processing station fed. It should be noted that the belt is also continuous on the exit side is windable so that the rolling in units of large diameter rolls is feasible without speeding up or slowing down.

The following is a detailed description of the facility and procedure explained, with the inlet-side device first in reference to to Figs. 2-5.

The primary roll 2 located on the take-up unit 1 is of a friction roller 101 is applied, then the front end of the tape of a Feed device 3 straightened. The leading end of the tape is held by a pinch roller 6 and a threading guide 103, which swings about a fulcrum 102, then inserted into a slot groove 104 formed in the intermediate take-up drum 7, and then winding starts in the direction indicated by the arrow. the The threading speed and the initial winding speed is approx. 40 m / min, and after several revolutions when tension is applied to the belt the winding speed is increased to the value v1. In this example a method was explained in which the roller is mounted on a drum with a slot groove is wound up. However, in order to wind up in an even more reliable manner, you can also grippers can be provided for holding the leading end of the tape, or the winding can be done using a belt winder.

Immediately before the end of the rewinding of the first primary roll, a. H. at the point where the rear end of the belt approaches the scissors 4, If the movement of the welding unit is interrupted, the rear end of the belt becomes cut off so that the next step of making a weld in can take place optimally, and the tape is fed to the welding unit 5. On the other hand, the following primary role is handled in the manner explained above, the front end of the tape is cut off by the scissors 4, the welding unit 5 fed, and the rear end of the preceding roll and the front end of the subsequent roles are connected to each other by welding. Then begins the intermediate Winding up again. The primary roles are sequential welded together in the manner explained on the welding line and form a secondary role.

The secondary roll 10 is rolled on the rolling train, while the Secondary role 9 is formed. When the secondary roll 10 is continuously unwound and the rolling thereof is almost finished, the roll 10 becomes thin and thus can the secondary roll 10, which has already been completed, together with beforehand an intermediate take-up drum 7 and a bearing 109 along a bearing guide 110 by means of a hydraulic cylinder (not shown) or in some other way to the rolling train can be moved in the direction indicated by arrow f. So once the rolling the roll 10 is finished, the unwinding of the next roll 10 can be done with the insertion and start rolling the belt. In addition, the intermediate winding drum 8, whose unwinding process has ended to form the next secondary roll 25 in the direction indicated by the arrow g moves to the welding line and begins the winding process again (see Fig.

4). The introduction takes place with the aid of an introduction unit 111, which is assigned to an insertion guide 103 and is linearly movable with respect to this.

After the secondary roll 9 has been moved to the rolling train, it becomes acted upon by a distribution roller 106, and the belt is driven by a slide plate 112, which is fixedly arranged on the bearing 109 and guided by a stationary guide 108 and fed to the rolling mill 12 via a pinch roller 111. If the diameter of the Secondary role comprises only about six normal roles, this can cause difficulties Avoid making it easier to guide and unwind the tape, that the guide plate 112 is extendable in the direction of the work line. Additionally is the unwinding of the secondary roll can be carried out evenly by placing the rear end of the The tape is reversely bent, namely by a tape htnterende-Bi egewalse, which is arranged vertically movable on an enmi roller 6 in the welding line.

The intermediate winding units 7 and 8 are powered by electric motors 115 driven via telescopic shaft couplings 113 and reduction gear 114. One Secondary roll 10, the size of which corresponds to ten normal rolls, can be continuous are rolled, whereby a considerably increased productivity is achieved.

In the following, with reference to FIGS. 6-8, the outlet-side Winding up explained.

After the third roller 17 finishes winding the rolled strip has, it is together with the downstream intermediate take-up drum 15 of the rolling line 221 to a shear and winding line 222, the rolled Tape is introduced into a stationary guide 208 by means of a friction roller 207. The belt then passes through a pinch roller 18 and is along a deflector roller 20 out on the winding drum 21, the winding by means of a belt winder 24 of the rolled strip begins. The winding is interrupted when the roll diameter like that of a normal role, d. H. a fourth roller 22, and then the tape is cut off by the scissors 19. When the winding is finished is, the roll is conveyed out by the roller carriage 23. After that, the remaining one becomes Part of the third roll 17 is wound up in the same way, and fourth rolls are formed and promoted one after the other.

In the meantime, the rolled strips that run out one after the other are being used from the downstream intermediate winding unit 14 in the rolling mill 221 wound, whereby the third roll 16 is formed. Once unwinding the third roller 17 is finished, the third roller 16 is together with the outlet side Twin winding drum 14 and a bearing 209 along a bearing guide 210 to a shear and wind-up line 222 in the direction indicated by the arrow o by means of a hydraulic cylinder (not shown) or the like moved and in the same Way as the third roll 17 unwound. Before this process, however, the outlet-side Intermediate take-up drum 15 also for starting the winding of the following rolled strip is moved to the rolling train 221 in the direction of arrow p, and the winding begins in the state according to FIG. 8. In this case, threading takes place from the Deflection roller 13 in the exit-side intermediate winding drum by means of a telescopic guide, which are arranged in a threading guide 203 swinging around a fulcrum 202 is.

According to Fig. 8, at the beginning of the unwinding of the third roll 17, the Tape acted upon by a friction roller 26 and securely fastened to the bearing 209 by one Guide plate 212 and a stationary guide 208 out. If the diameter of the If the third role corresponds to about five normal roles, difficulties arise as a result avoided that the guiding and unwinding of the tape is facilitated by that the side plate 212 is designed to be extendable.

The downstream intermediate take-up drums 14 and 15 are used for Winding or unwinding of the tape from electric motors 215 via telescopic shaft couplings 213 and reduction gear 214 driven, Through the invention is It is therefore possible to use a secondary role 10 corresponding to ten normal roles in succession to roll and wind up, so that productivity is significantly increased.

In this embodiment, on the entry side of the rolling mill a large diameter secondary roller is formed. While the tape of this secondary role is rolled, another upstream winding unit forms a further secondary roll with a large diameter, so that the strip can be fed to the rolling mill almost continuously is by using alternate secondary roles. At the same time a third roll with the same diameter as the secondary roll on the outlet side of the rolling mill, while another already formed third roll at the shear station is cut to form normal rolls, and rolling can be carried out almost continuously, which increases productivity considerably will. Since no loop bypasses are used, not only is this reduced required space, it also simplifies control and operation. Furthermore, the rolling stock fault detection, which was previously carried out on another line, can be carried out in the vicinity of the winding unit 21, so that errors can be detected at an early stage and the risk of generating large quantities of defective items is eliminated will. In addition, since the su-rolling roller is completely separated from the fourth roller it can be in units of ten even if a minor fault occurs Normal rolls are handled so that the rolling is continuous at maximum capacity can be carried out in contrast to a rolling process when using loop bypasses, In this embodiment, both the inlet and outlet side of the Rolling mill formed large rolls, and there is a continuous one Rolling in units of these large rolls. However, it is also a different procedure applicable, in which either the inlet or outlet side of the rolling mill is bypassed is used and on the other side large-diameter rollers are formed.

For the start of winding the third roll, the use was made proposed a drum with a slot groove.

However, a belt winder can also be used.

Each of the above embodiments was carried out in a plant used, in which the strip to be rolled is only moved and processed in one direction will. However, the invention is also applicable to a reverse processing plant, as will be explained with reference to FIG.

A known Sendzimir rolling mill 301 is provided.

A first winding and unwinding unit 302 with a solid block reel (i.e. its diameter cannot be changed) and a winding and unwinding unit 303 to form a large roll, which also has a solid block reel arranged on the inlet side of the Sendzimir rolling mill .301; a pair of scissors 305, a Three roll feeder 306 and an unwind unit 307A with one in diameter changeable reels are in front of the winding and unwinding unit 303 (left in the drawing) intended. A pinch roller 308 and a deflector roller 3Q9 are also provided.

On the outlet side of the rolling mill 301 are a pair of scissors 310, a Winding unit 311 and a second winding and unwinding unit 312 are arranged. Latter has a solid block reel with a non-changeable diameter, the diameter of the However, the reel of the winding unit 311 is similar to that of the reel Unit 907A changeable.

The first and second winding and unwinding units 302, 312 and the Winding and unwinding unit 303 for the formation of a large roll thus have reels with them fixed diameter, and these are connected to a driving electric motor, its output power is higher than that of the electric motor for the unwinding unit 307A and the take-up unit 311 is. A roll holder 313, e.g. B a roller carriage, and a roller conveyor 314 are in the vicinity of the winding unit 311 and the unwinding unit, respectively 307A provided.

Typically two or more unwind units are 307A and the like two or more take-up units 311 are provided (in the drawing there are another Unwind unit 307A and a roll feed device 313 associated therewith in FIG Dashed lines drawn).

The operation of the reversible rolling mill will now be explained.

Before rolling, tape rolls 315A, 315B, which are relatively small Diameter and are normally used in the corresponding unwinding unit 307A, 307B is inserted, and then the roller 315A is inserted as the foremost roller in that of the Three roll feeder 306 closest unwind unit 307 introduced. After the roll 315A has been inserted into the unwind unit 307A, it becomes driven at low speed, and the leading end unwound from reel 315A of the tape is fed into the reel of the winding and unwinding unit 303 to form a large roll introduced with the aid of the pinch roller 308 and fixed there. After this the front end of the tape unwound from the first roll on the reel of the and unwinding unit 303 beSesrR-t, the rotary motion of the Interrupt unwinding unit 307A, then unwinding unit 307A and the Winding and unwinding unit 303 opposite to each other to form a large roll turned.

(I. In this case, the winding and unwinding unit 303 is in the direction of the arrow s.) The roll 315A loaded in the unwinding unit 307A becomes wound by the winding and unwinding unit 303. In this case the speed becomes the reel of the unwinding unit 307A and the reel of the winding and unwinding unit 303 controlled by a control device (not shown), so that both reels the have the same peripheral speed. When the whole of the unwinding unit 307A introduced roll unwound and the rear end of the roll entered the scissors 305 is, the operation of the winding and unwinding unit 303 is stopped, and the tail end the roll is cut by scissors 305 and shaped so that it is vertical to the sideline of the tape. Then the winding and unwinding unit 303 is turned into Direction of arrow s rotated by a predetermined angle, and if the rear end The roller reaches under the torch of the welding unit 304, the rotary movement interrupted. Before this process takes place the straightening of the roller 315B, which is in a second unwinding unit 3073 is inserted; that fed out of the roller 315B The leading end is fed into the shear 305 by the three-roll feeder 906, where the leading end of the roll is trimmed by a predetermined amount by means of scissors 305 will. After cutting off the front end, a new front end becomes the following Roller 315B is inserted into welding unit 304 and welded to the rear end the previous role that was stopped here.

The one connected in this way to the rear end of the previous roll The following roll 315B is in turn wound up by the winding and unwinding unit 303, which is turned on and rotated in the direction of arrow S. In the meantime another roll is fed from a roller conveyor 313 and into the empty unwinding unit 307A, from which the roll 315A was unwound, introduced.

After repeating these operations, the is on the reel Winding and unwinding unit 303 a large roll 316 wound up by welding was made up of ten or more rolls. After this big role on the and unwinding unit 303 is formed, it is rotated in the direction of arrow t, the front end of the large roll 316 is straightened, and thereafter it becomes the reversible Rolling mill 301, which starts up at low speed, threaded. After that The front end of the roll 316 has passed the rolling mill and into the reel of the second Winding and unwinding unit 312 was inserted and fixed there, the speeds the winding and unwinding units 303 and 312 and the rolling mill 301 increased. Of course In this case, the winding and unwinding unit 303 becomes a large one Roll and the winding and unwinding unit 312 on the outlet side of the rolling mill 301 rotated synchronously.

When almost all of the strip to be rolled is removed from the reel the / on and off Unwinding unit 303 is unwound, the revolutions of the rolling mill 301, the Winding and unwinding unit 303 and the winding and unwinding unit 312 on the outlet side of the rolling mill reduced, after which these units rotate at threading speed; the tape remaining in the reel of the winding and unwinding unit 303 passes through now the rolling mill 901 with threading speed. After the entire tape has been removed from the Unwinding unit 303 is unwound in this way, the operation of the The rolling mill 301 and the winding and unwinding units 303 and 312 are interrupted, and that The tail end of the strip of the roll is stopped at the entry side of the rolling mill. The rolling mill 301 and the winding and unwinding unit 312 are moved from this position rotated at low speed in reverse, and the rear end of the belt, stopped at the entry side of the rolling mill, the reel of the take-up and unwinding unit 302, which are arranged on the entry side of the rolling mill is. Then the rotary movements of the rolling mill and the winding and unwinding unit 312 interrupted, and after the rear end of the tape on the reel of the up and When unwinding unit 302 has been attached, the second rolling pass begins. That is, after the end portion of the tape is attached to the reel of the winding and unwinding unit 302 is, the speeds of the winding and unwinding units 302, 312 and the rolling mill 301, the roll wound on the winding and unwinding unit 312 is increased in the direction indicated by the solid line arrow in FIG. 9 through the revolutions the winding and unwinding units 302 and 312 unwound in the directions v and x, respectively, rolled in the rolling mill 301 and wound onto the winding and unwinding unit 302.

A predetermined number of rolling passes for a strip begins alternating winding and unwinding onto and from the winding and unwinding units 302 and 312 in the manner illustrated; at the same time the winding of the from begins of the unwinding unit 307A in the empty winding and unwinding unit 303 to form the next big role.

In the penultimate run it is necessary to cover the entire band of of the winding and unwinding unit 312 to unwind.

So if almost the entire role is handled by the unit 312 is the revolutions of the rolling mill 301 and the winding and unwinding units 302, 312, the end portion attached to the reel of the unit 312 slows down of the tape is released and stopped at the location of the scissors 310.

Then, immediately before the winding and unwinding unit 302 is in the direction of the arrow u is rotated, the front end of the tape is cut off by the scissors 310, the wind-up and unwind units 302 and 312 slowly move in the direction of the arrow u rotated, and the leading end of the tape stopped on the scissors 310 becomes Winding unit 311 out.

Then the leading end of the tape is attached to the reel of the take-up unit 311 attached. The winding and unwinding unit 302 is then moved in the direction of the Arrow x rotated, and the take-up unit 311 is rotated in the direction of arrow y; as soon as the last rolling pass has started, a first roll of small diameter, which is later conveyed out, rotated.

Once the diameter of the formed in the winding unit 311 As the roll reaches the predetermined size, the scissors 310 are actuated and cut the tape off; at the same time, the winding unit 311 slowly stops. The end section of the subsequent cut tape is immediately followed by a guide, not shown led to a further (not shown) winding unit; be at the same time the revolutions of the winding and unwinding unit 302 and the rolling mill 301 are reduced, and the end portion of the tape is stopped when it reaches the take-up unit. Then, while preparing to form a second roll with small Diameter start in the Winding unit 311 formed Roll 317 with a small diameter from the reel of the winding unit, which can be changed in diameter 311 pulled and by means of a conveyor 314, z. B. a roller carriage that is close the winding unit 311 is arranged, conveyed from the rolling train, this exemplary embodiment illustrates an effective method of reversible rolling to complete the formation a large roll on a rolling through line made up of several rolls with a small one Diameter after a strip to be rolled in the form of small-diameter rolls was brought to the inlet side of the rolling mill, furthermore the reversible rolling of the large role in the reversible rolling mill, and further the formation of multiple roles with a small diameter removed from the tape for easier portability are formed. The invention also provides a reversible rolling mill at. According to the invention, the roles that are brought into or out of the rolling mill This will be promoted, same size and weight as normal rolls, and thus there is the advantage that conventional rolling mills can partially be used. In addition, the insertion and extraction does not take place in the winding and unwinding unit, in which the strip is subject to tensile stress during rolling, and thus can In the winding and unwinding units, rigid solid block reels with unchangeable Diameter can be used. As a result, the invention provides a method and a device for rolling provided for rolling corrosion-free Steel is particularly suitable because this strip-shaped rolling stock during rolling must be subject to strong tensile stress,

Claims (9)

Device for winding and unwinding a tape to a processing plant, e.g. B. a rolling mill or an electroplating plant, or from the processing plant, characterized by at least one up and Unwinding drum, which is a tape made up of several transportable normal rolls to form a large role. 2. Method for unwinding a strip to a processing plant, z. B. a composite cold rolling mill or an electroplating plant, characterized by successive joining of several supplied rolls to form one Tape; Winding the tape on a drum; and feeding the tape from the Drum to processing plant. 3. The method according to claim 2, characterized by at least two Drums (7, 8; 14, 15) for winding up several rolls one after the other or for feeding a tape to the processing plant, and through alternating winding and unwinding functions the drums (7, 8; 14, 15). 4. Device for unwinding a roll, characterized in that that a first drum unit (7, 8) for receiving one introduced into the device Rolling and unwinding the same, a connecting unit (5) for connecting the rear end the rear end of a previous roll released from the drum (7, 8) with the front end of a following roller, a second drum unit (14, 15) for successive winding a belt and a processing plant (12) for processing the tape unwound from the second drum unit (14, 15) are provided, and that the second drum unit has at least two drums (14, 15) for alternating winding and unwinding. 5. A method for winding a roll, characterized in that one in a processing plant (e.g. a rolling mill or an electroplating plant) processed and exiting tape wound up as a roll with a large diameter is, and that then the large diameter roll unwound and in shape is rewound from rolls with normal diameter. 6. The method according to claim 5, characterized in that for winding at least two of the strip fed in succession from the processing installation (12) Drums (14, 15) are provided, and that the drums (14, 15) alternately for Winding and unwinding can be used. 7. Device for winding a roll, characterized in that that in succession are provided: a tape processing plant (221) (e.g. B a rolling mill or an electroplating plant); a first drum (14) for winding of tape fed from the plant (221); a cutting unit (19) which the of cuts unwound tape from the drum to form normal rolls; and one second drum for winding the tape in the form of normal rolls. 8. A method for unwinding and winding up rolls, characterized in that that it is carried out on a rolling train and comprises the following steps: Formation a single large roll by welding tape, which is successively made by several rolls to be rolled is unwound; Rolling the unwound from the large roll Strip with a predetermined number of rolling passes in a reversible Rolling mill; and forming multiple rolls from the large roll by cutting the rolled strip into rolls of suitable length, 9. Device for unwinding and winding of rolls, characterized by at least one unwinding device (307A) the entry side of a reversible rolling mill (301); a first cutting unit (305) and a welding unit (304) between the unwinding device (307A) and the entry side of the rolling mill (301); a winding and unwinding unit (303) to form a large roll between the welding unit (304) and the inlet side the rolling mill (301) is located; a first winding and unwinding unit (302) between the Winding and unwinding unit (303) to form a large roll and the entry side the rolling mill (301); a second winding and unwinding unit (312) on the outlet side the rolling mill (301); a second cutting unit (310) between the outlet side of the rolling mill (301) and the second winding and unwinding unit (312); at least one winding device (311) between the second cutting unit (310) and the second winding and unwinding unit (312); and a roller conveyor (313; 314), the one near the unwinder (307A) and the winder (311) is arranged. Blank page