MX2013015057A

MX2013015057A - Drive roller changing system for drivers of a rolling mill system.

Info

Publication number: MX2013015057A
Application number: MX2013015057A
Authority: MX
Inventors: Klaus Frauenhuber; Friedrich Moser; Jürgen Schiefer
Original assignee: Siemens Vai Metals Tech Gmbh
Priority date: 2011-06-22
Filing date: 2012-05-24
Publication date: 2014-07-28
Also published as: BR112013032639A2; CN103781563B; RU2014101696A; SA112330622B1; EP2723512A1; RU2602918C2; TW201318721A; AU2012272114B2; ZA201308987B; CA2840114A1; WO2012175277A1; EP2723512B1; KR101906388B1; JP2014522727A; CA2840114C; AT511341B1; AT511341A4; CN103781563A; JP5823612B2; KR20140038537A

Abstract

The invention relates to a device and to a method for changing drive rollers of drivers of a rolling mill system. In addition to the driver station (23) and/or reel station (24) of the hot-rolling mill system, at least one driver roller storage station (27) and at least one driver roller conditioning station (28) are present, preferably viewed from the hot-rolling mill stations in the direction of the reel station beyond the swift station on the extension of the longitudinal axis of the hot-rolling mill system. Likewise, at least one manipulator (29) is present which is displaceable at least between the driver station and the driver roller conditioning station and the driver roller storage station, and optionally also the hot-rolling station.

Description

INSTALLATION OF CHANGE OF DRILL ROLLERS FOR DRIVERS OF A LAMINATE INSTALLATION FIELD OF THE INVENTION The present invention relates to a device and. to a method for changing drive roller rollers of a rolling plant.

STATE OF THE ART In dragging equipment, also called draggers, a metal belt is fixed, driven or deflected between a pair of rollers. The rollers are typically used in rolling mills of rolling mill facilities, for example hot rolling mills, where they are disposed in front of rolling tape windings of the winding stations to adjust the web traction in front of the winding station. winder by means of two cylinders, namely the drive roller and the support drive roller. The guide rollers have the additional objective of reducing lateral displacements of the rolling belt before winding. For this purpose, for example, the pivoting drive roller is controlled and placed against the stationary support roller, in such a way that thanks to the location of the drive roller with with respect to the support drag roll, the lamination strip undergoes a desired pull of the belt and a desired lateral displacement.

Such guide dogs are known, for example, from documents EP747147B1 or AT500689B1. In document EP747147B1 a guide pin is shown, whose pivoting pinch roller is disposed between two rockers supported by the two ends of the axle of the pinch roller. Both rocker arms are rigidly joined with a torsion spring of a frame that forms a pivot axis for the rocker arms. In document AT500689B1 there is disclosed a similar guide driver, in which, however, the rockers can be pivoted independently of each other on a pivot axis of a frame.

The drive roller and the support roller of a guide pin must be cleaned and polished regularly, as, for example, due to carbon adhesions, dirt particles present on the tape to be wound or due to defects in the film. surface caused during the initial pass in the belt to be wound, the surface of the driving roller and the support roller become irregular, which can lead, in turn, to a damage of the surface of the tape to be wound.

In document EP747147B1 or AT500689B1, the axis of the The drag roller is supported on a support area of the rocker arms, the drag roller being, respectively, below the rocker arm. Roller roller bearings, to avoid damage during the initial pass stroke, are placed without play, for example, by means of spring-activated balancing elements.

It is not possible to remove the drag roller upwards, since the rocker blocks an extraction of this type and blocks the path upwards. For a downward, right or left extraction in the operating state, the path is blocked by the support drive roller and the frame. Before an extraction is possible, therefore, a blocked path must first be opened.

In order to enable the cleaning and polishing of the driving roller and the supporting driving roller, normally the pair of rockers acting as support for the driving roller is pivoted by means of rocker cylinders to an intermediate position; this is also necessary for the replacement of the drive roller. The intermediate position is often achieved after swinging the pair of rockers 180 °. Next, the drive roller and the support drive roller in the installed state are mostly cleaned by hand and ground or polished. Due to the cleaning and grinding or polishing in the installation there is a - safety risk. This is because the people who deal with it have to go to the interior of the installation between the parts of the installation that, in this respect, they have to be disconnected and blocked reliably. There is also a safety risk due to the time constraint to carry out these activities, since cleaning and grinding or polishing have to be carried out in the time interval of 10 to 15 minutes necessary for the change of working cylinders of frames. In the case that by cleaning, grinding and polishing, no sufficiently uniform surface can be produced on the drive roller or on the support drive roller, or in case of damage, the drive roller or the support drive roller , after pivoting the rockers, they have to be removed from the frame and replaced by a new drag roller or support roller. For 'this, in. If the guide dogs according to EP747147B1 or AT500689B1 have to be removed, the entire rocker construction must be removed together with the driving roller. Due to the plurality of the release elements and the mass of the frame together with the drive roller, the maintenance of drive rollers and support rollers causes a considerable complexity of work over time. In addition, the drag roller is difficult to access for maintenance work when it is arranged between the rocker arms.

According to the internal state of the art, trawlers are known which overcome the disadvantages of the state of the art and which cause less work complexity in time with less safety risks during the change of trawl rollers than the trawlers and conventional procedures. A driver of this type for a steel belt winder installation has at least one support drive roller housed in a frame and at least one drive roller that can be positioned with respect to the support drive roller, which is housed in at least one rocker attached to the frame, the driving roller being placed in a support area of the rocker, the support area being open for insertion or for pulling the roller to the side and / or upward with location of the rocker arm, in operating position and with the driver having a fixing mechanism for fixing the roller to the support area. The zone of support on which the trailing roller on the rocker arm is placed must be understood as the support area.

The support area for insertion or for extraction of the drive roller is open to the side and / or upwards with the location of the rocker arm in the operating position, therefore, the support area does not interfere with a disassembly of the drive roller towards the side and / or upwards. Therefore, a drive roller, if necessary, can be removed from the rocker to the side and / or upwards without having to remove the rocker arm with the drive roller substantially from the operating position or having to be dismantled. completely the rocker with the roller of drag. By operating position is to be understood a position of the rocker arm that is adopted during the normal operation of the driver.

The driver has a fixing mechanism for fixing the driving roller in the support area. For this reason, during operation it is ensured that the drive roller does not come undesirably towards the side and / or upwards. In the fixed state, a controlled displacement of the drive roller to different operating positions is possible. Preferably, the positioning of the driving roller with respect to the support driving roller in the fixed state can be modified by changing the setting of the fixing mechanism to different positions.

According to one embodiment, the fixing mechanism comprises a movable pin that can be fixed, preferably, on the seesaw.

According to another embodiment, the fixing mechanism comprises a folding device, the parts of which can be folded around at least one and fixed to the rocker arm and which can be fixed to the rocker arm. For example, it can be two arms that can be folded into each other and locked by a transferable key. Each of the arms, in this respect, collapses around another axis.

The support drive roller is located below the drive roller. Therefore, it is not possible to remove the support roller upwards as long as the drive roller is installed in the driver. When the drive roller has been removed, the path for an upward pull is open for the support drive roller.

When the driving roller is housed between a pair of rocker arms, the separation of the rockers is preferably greater than the length of the supporting roller. Therefore, it is ensured that the support roller can be pulled upwards through the free space that is produced as a result of the removal of the drive roller.

In case the separation of the seesaws in If the operating position is less than the length of the support drive roller, it is preferred that at least one of the rockers be able to move or pivot with respect to the other rocker when the drive roller is removed. In this way, it is achieved that the support roller can be removed.

Preferably, the steel tape winder installation is a steel tape winder for hot rolling tape.

Preferably, the driver is a guide driver.

According to a preferred embodiment, the driving roller and the support driving roller are arranged in a holding device.

The holding device, which can be, for example, a holding frame, contains both the driving roller and the supporting driving roller.

This makes it possible, for the extraction or for the insertion of a pair of drive roller and support drive roller, to grip only the holding device and remove them from the drive.

Because the drive roller and the support drive roller do not have to be individually removed or inserted individually into the drive, the removal and the insertion can be done more quickly.

The support drag roller can be housed stationary or movable in the frame.

According to one embodiment, the ee of the driving roller and / or the ee of the supporting driving roller around which the driving roller or the supporting driving roller rotates is composed of at least two axle parts of the driving roller. dragging and / or parts of the support drag roller ee, at least one of the axle parts of the drag roller being made as a tree stump detachably attached to the cylindrical body of the drive roller or drive roller of support - for example, through a joint flange, a perforated disk with displaceable drag bolts or claw coupling. In this regard, the shaft journal can be embodied as a hollow shaft, in which a motor-driven shaft can be inserted for driving the drive roller or the support drive roller. This enables a quick removal of the drive roller and / or the drive roller from the drive, which decreases a safety risk caused by the time delay during the change of the drive roller.

According to an embodiment of the driver, the support drive roller can be extracted laterally in direction of its longitudinal axis of the entrainer. It can also be inserted laterally in the direction of its longitudinal axis in the driver.

In the trawlers shown in EP747147B1 or AT500689B1, one end of the rockers can be pivoted about an axis of rotation, while the other end of the rockers is connected with an activation equipment such as, for example, a medium cylinder. compressed, preferably a hydraulic cylinder. By adjusting this activation device, the rocker arms can be pivoted around their axis of rotation, for example to enable the removal of the drag roller or for the control or adjustment of the separation of the driving roller and the support roller. . The support area of the drive roller is between the pivotable end and the end of the rocker arm connected to the activation equipment.

Also in the driver according to the internal state of the art, the rockers can be pivoted about an axis of rotation arranged in an area of rotation of the rockers and are connected in an activation zone with an activation device. In this regard, the support area of the drive roller, as in EP747147B1 or AT500689B1, can be found between the axis of rotation area and the activation zone. According to another, embodiment, the Turn zone can be found between the support zone and the activation zone. An advantage of such an embodiment consists in that during the compression of the driving roller the forces are better applied to the rocker and more favorable stress states are generated for the rocker arm. The effective distance of an activation device acting on one end of the rocker arm, in a construction of this type, can also be expanded constructively more easily than in the embodiments realized as in EP747147B1 or AT500689B1. Thanks to an extended effective distance, the same forces can be achieved with smaller activation devices or greater forces can be achieved with the same activation equipment.

Another internal state of the art is a method for removing a drive roller from a driver according to the internal state of the art. This method is characterized in that it comprises the steps - opening of the fixing mechanism, - removal of the driving roller to the side and / or upwards of the driver.

By opening the fixing mechanism it is to be understood that the fixing of the driving roller in the support zone is undone.

The support drive roller in a driver is held by means of fastening devices in the driver so as not to change its position at all during normal operation or to change its position beyond an acceptable degree. In this regard, the support drive roller can be fixed, so that no movement at all is possible. It can also be displaceable to an acceptable or desired degree. What degree of displacement is acceptable or desired depends on the respective operating state. In order to be able to change the shifting forces of the shifter depending on the thickness of the belt and the quality of the belt, for example, the distance of the driving roller shafts and supporting drive roller can be changed to a certain degree.

An embodiment of the method according to the internal state of the art is characterized in that after the extraction of the driving roller it additionally comprises the steps - release of fixing devices for fixing the support roller on the driver, removal of the support drag roller upwards from the driver.

Through the opening that is produced as a result of the extraction of the drag roller can be extracted from the also drag the support roller upwards.

According to another embodiment, the support pull roller for extraction can be withdrawn laterally, ie in the direction of its longitudinal axis, of the driver. This can be done before or after the extraction according to the invention of the driving roller. This can also be done during the removal of the drive roller from the driver; in this way it is possible to carry out an extraction of the driving roller and the driving roller more quickly than if both extractions were carried out successively. Then, the procedure according to the internal state of the technique during the extraction of the driving roller additionally comprises the steps - release of fi xing devices for the attachment of the support roller on the driver, - extraction of the support drag roller by lateral withdrawal of the driver.

According to a preferred embodiment, the drive roller and the support drive roller are removed from the drive in pairs by removal of a clamping device in which a pair of drive roller and support drive roller is arranged.

The internal state of the technique is described, by way of example, in the attached schematic figures.

The Figure shows a side view of an embodiment of a driver according to the internal state of the art.

Figure Ib shows a driver according to Figure 1 from a raised oblique view.

Figure 2 shows a view of a driver according to Figure Ib from a raised oblique view with drive roller and support drive roller arranged in a clamping device.

Figure 3 shows an embodiment of a driver according to the internal state of the art, in which the area of the axis of rotation 11 lies between the support zone 7 and the activation zone 12.

Figure 4 shows a trawl according to the internal state of the art with support roller removed from a raised oblique view.

Figure 5 shows an alternative for the locking mechanism for fixing the driving roller in the support area.

The . Figure 6 shows another embodiment of a driver according to the internal state of the technique, in which the area of the axis of rotation 11 lies between the support zone 7 and the activation zone 12.

The Figure shows a side view of a trawl 1 according to the internal state of the art for a steel strip winder installation, especially a guide trawl for a hot rolling strip winder installation. The pusher 1 comprises a support drag roller 3 housed in a frame 2 and a drive roller 4 which can be positioned with respect to the support drag roller. In Figure 1, the drive roller 4 and the support drive roller 3 are represented only by dashed lines, since in the side view they are hidden by the frame 2 and other parts of the driver. The driving roller 4 is housed in a pair of rocker arms 5a, 5b connected to the frame. In the side view of Figure 1 only one rocker 5a can be seen, the second rocker 5b of the pair is hidden in this view by the rocker 5a. The pair of rocker arms 5a, 5b is in operating position. The pair of the rocker arms 5a, 5b can pivot about a pivot axis 6 of the frame 2. The drive roller 4 is placed in a support area 7 of the rockers. The support zone 7 is open for the insertion or for the removal of the driving roller 4 towards the upward side with location of the rockers in operating position. The support zone is shown with a continuous wavy line. A mechanism is present for fastening the driving roller 4 to the support area 7, it is designed as a displaceable pin 8. In the represented position of the pin 8, it has not yet been moved to its final position in which it fixes the driving roller 4 in the support area 7. For the clear representation, a part of the rocker 5 is represented in a cut-away manner. , in such a way that part of the path of the pin 8 on the rocker 5 is shown. When the pin 8 is taken from the. position represented to its final position, as can be seen in the following Figure Ib, on one side the driving roller 4 is fixed and, on the other hand, the balancing cups 20a, '20b are activated for the positioning without play of the drag roller bearings 4. · Figure Ib shows a driver 1 according to Figure 1 from a raised oblique view. Equal parts with respect to the Figure are provided with the same references. Unlike Figure 1, the pin 8 of the fixing mechanism is represented in its final position in which the driving roller is in the support zone 7 of the rocker arms 5a, 5b. The drive roller 4 and the support drive roller 3 can be seen better than in Figure la. The second rocker 5b of the pair of rockers 5a, 5b can be recognized, unlike Figure 1a.

Both in Figure la and in Figure Ib, one end of the rocker arms 5a, 5b is connected, respectively, with an activation equipment, especially a hydraulic cylinder 9a, 9b. By adjusting this hydraulic cylinder 9a, 9b, the rocker arms 5a, 5b can be pivoted about their axis of rotation 6, for example to adjust the spacing of the driving roller 4 with respect to the support roller 3. The support area 7 of the driving roller is between the end that can pivot about the axis of rotation 6 and the end of the rocker arms 5a, 5b connected to the hydraulic cylinder 9a, 9b of the activation equipment.

Figure 2 shows another view of a driver according to Figure Ib from a raised oblique view. The same parts with respect to Figure Ib are provided with the same references. Unlike Figure Ib, the pin 8 of the fixing mechanism is shown in its initial position, in which it does not fix the drive roller 4 in the support area 7. The drive roller 4 and the support drive roller 3 are not installed in the driver 1. They are arranged in a fastening device, especially a holding frame 10. The installation or removal of the driving roller 4 and the support driving roller 3 is carried out by inserting or removing the holding frame 10 in frame 2 of the entrainer 1 Figure 3 shows a view of a driver according to the internal state of the art in a side view analogous to Figure la. Equal parts with respect to the Figure are provided with the same references. For the greatest clarity, the drive roller 4 and the drive roller i of support 3 are not represented. The spinning wheel 6 is arranged in a pivoting area 11 of the rocker 5a. The hydraulic cylinder 9a is arranged in an activation zone 12 of the rocker 5a. In contrast to Figure 1, the axis of rotation 11 is between the support zone 7 and the activation zone 12.

Figure 4 shows a view of a driver according to the internal state of the art analogously to Figure Ib from a raised oblique view. The same parts with respect to Figure Ib are provided with the same references. No drive roller is inserted in the driver 1 and, correspondingly, is not shown. The support drag roller 3 is also not inserted. Figure 4 shows the support drive roller in the extracted state. The support drag roller 3 can be withdrawn laterally in the direction of its longitudinal axis of the driver 1 or can be inserted in the driver 1. Figure 4 shows an extraction frame in which the support drag roller 3 is removed from the driver 1 or inserted into the driver 1.

The fixing mechanism for the fixing of the driving roller 4 in the support area 7 does not have to be designed as a displaceable pin 8.

Figure 5 shows an alternative fixing mechanism that has a folding device with two arms 14, 16 that can be folded into each other, which is locked by a transverse key device 18. Each of the arms 14, 16, in this respect, the arm 14 around the axis 15 and the arm 16 about the axis 17 are lowered around another axis, the two arms 14, 16 are connected with the rocker 5a through the axes 15, 17. The 18 transposable key device is fixed on the arm 16; it can be moved by means of a hydraulic cylinder 19. The arm 14 has bulges that fit into recesses in the transverse key device 18. When closing the fixing mechanism, the arms 14, 16 are lowered to the position shown and the hydraulic cylinder 19 moves the key device 18 translatable in such a way that the recesses slide on the bulges. With it, the two arms 14, 16 are locked one in another.

Figure 6 shows a view of a driver according to the internal state of the art in a side view analogous to Figure la and 'Figure 3. Equal parts with respect to the figure are provided with the same references. The axis of rotation 6 is arranged in a region of the axis of rotation 11 of the rocker 5a. The hydraulic cylinder 9a is arranged in an activation zone 12 of the rocker 5a. As in Figure 3, unlike Figure 1, the axis of rotation area 11 is between the support zone 7 and the activation zone 12. Figure 3 and Figure 6 differ in the shape of the . rocker 5a and the way in which the driving roller is placed in the support area of the rocker arm.

With the use of trawlers such as those known from EP747147B1 or AT500689B1, the drive roller and the support drive roller are individually disassembled by means of a trawl ship crane and replaced by a support roller or support roller. treated in a workshop. In this regard, a replacement usually takes between 5 and 10 hours and, therefore, is carried out only during a planned shutdown of the rolling installation .. With the driver described above according to the internal state of the art can, carry out a replacement in the interval of 10 to 15 minutes .. Therefore, a substitution can be carried out also during the operation of the rolling plant in a brief pause of rolling or simultaneously with a change of working cylinder. Correspondingly, the surfaces of the drag rollers and support rollers do not have to be polished - as is known in the case of the use of draggers such as those of document EP747147B1 or AT500689B1 - inserted in the conveyor, but is it is possible to carry out, without stopping the rolling installation, the polishing and, therefore, a perfect quality of the surface on the outside of the driver.

With the use of the driver described above according to the internal state of the art, with the use of rolling installations that are designed for the use of -transformers such as those known from EP747147B1 or AT500689B1, a replacement of the rollers of drag or support rollers depends on the availability of the crane. of the laminate installation ship. In addition, the replacement rollers are most often stored and machined in the so-called roller shop far removed in space, so that long transport paths have to be traveled. This makes it difficult to flexibly change the drive rollers and support drive rollers to meet the changing production requirements or changing requirements posed to drive rollers and support drive rollers.

SUMMARY OF THE INVENTION TECHNICAL OBJECTIVE The purpose of the present invention is to provide a device and a method which, especially with the use of the driver described above according to the internal state of the art, make possible a more flexible and quicker change with respect to the state of the art. technique of drag rollers and support rollers as well as their machining in direct vicinity of the trawl.

TECHNICAL SOLUTION This objective is solved by a hot rolling installation comprising, arranged successively along a longitudinal axis of the hot rolling plant - Variás hot rolling stations, - at least one trawler station, - at least one winder station, which is characterized in that in addition to the pulling station and / or winder station, preferably viewed from the hot rolling stations towards the winder station beyond the winder station on the extension of the longitudinal axis of the installation of hot rolling, at least one roll-drive station is present and at least a trawl roller treatment station and where at least one transferable manipulator is present at least between the trawl station and the trawl roller treatment station and the trawl roller deposit station, optionally also the stations of hot rolled The drive roller depot station, the drive roller treatment station and the manipulator are parts. of a trailing roller change installation. When there are several winder stations, these parts are preferably arranged beyond the last winder station in the advance direction of the tape. | When several trawl stations and / or several trawl roller depot stations and / or several trawl roller treatment stations are present, the manipulator can be moved between all of these trawl stations and trawl roller treatment stations and trailing roller deposit stations.

That the drive roller depot station and the drive roller treatment station are present next to the drive station and / or the winder station means that they are arranged in direct proximity with a separation of up to 40 meters, preferably up to 30 meters, particularly preferably up to 20 meters, very particularly preferably up to 10 meters. This shortens the transport paths and, therefore, saves time.

In this regard, the longitudinal ee of the hot-rolling plant in the direction of the rolling of the belt-also referred to as the belt advancing direction-is to be understood as in the direction from the hot-rolling stations towards the winder station. .

By the term "hot-rolling stations" is meant the parts of the hot-rolling plant in which it is rolled to produce a hot-rolling strip.

By the term "trailing station" is meant a part of the hot-rolling plant in which a trawler pulls the hot-rolling strip. When there are several trawls, the hot rolling installation comprises several trawl stations, as shown in Figure 8.

By the term "winder station" is meant a part of the hot rolling mill in which the hot rolling strip is wound on a winder. When several winders are present, the Hot rolling installation comprises several winder stations, as represented in Figure 8.

In this regard, a trawl station is not part of a winder station.

In this respect, by means of drive rollers it is meant the rollers which are used in the drive station for the drive, that is, drive rollers and support drive rollers.

By the term "manipulator" is meant a device by means of which. can be manipulated in the constituents of the hot rolling plant - for example, extraction and / or insertion of drag rollers from or into the trawl station, trawl roller treatment station, trawl roller deposit station - , for example, a crane or a robot.

In the pinch roller treatment station, the pinch rollers, for example, are ground and / or polished or the pinch rollers are assembled or disassembled. The trailing rollers treated in this way can then be inserted into the drive station of the drive roller. There are also never used, still untreated, drive rollers in the feed roll feeder station.

By means of the arrangement according to the invention of the drive station of the driving roller and the driving roller treatment station as well as the provision of a manipulator, during the replacement of driving rollers the transport paths can be shortened and avoid. dependence on the availability of the ship crane. In order to achieve maximum utilization with respect to the transport paths, the parts of the driving roller change installation are arranged as close as possible to the driving stations. In order to achieve maximum utilization with respect to the transport paths, the driving roller depot station and the driving roller treatment station are arranged, as far as possible, close to each other. Therefore, it is preferable that the drive roller depot station, the drive roller treatment station and the manipulator are arranged in the rolling house of the hot rolling plant.

ADVANTAGEAL EFFECTS OF THE INVENTION According to a preferred embodiment of the present invention, the manipulator is a crane that advances on crane trajectories that have a path at least above and / or next to the trawl station, station of bobbin winder, trailing roller treatment plant and trailing roller exchange station, if necessary also on hot rolling stations.

Preferably there is a manipulator. With this, the constructive complexity is limited. However, there may also be several manipulators, for example, two, three, four or more.

According to a preferred embodiment of the present invention, a device for checking the surface and / or a device for polishing the drive rollers and / or support drive rollers is placed in the manipulator. In this regard, testing and polishing can take place while the drive rollers are installed in the drive station or after they have been removed therefrom.

According to another preferred embodiment of the present invention, in addition to the manipulator there is a device that can be moved between the driving station and the driving roller treatment station and the driving roller storage station for checking the surface of the rollers of drag and / or support rollers and / or a device for polishing the drive rollers and / or the support drive rollers. In this regard, checking and polishing can take place while the trailing rollers are installed in the trawl station or after they have been removed therefrom.

In these two embodiments, devices for checking the surface of the drive rollers and / or drive rollers and / or devices for polishing the drive rollers and / or rollers can be transported with a transportable manipulator. of drag of support of simple form until the rollers of entrainer.

Another object of the present invention is a method for the change, preferably automatic, of drag rollers and / or support rollers in a hot rolling plant according to the invention, characterized in that it comprises the steps a) releasing the drive rollers and / or support drive rollers to be replaced through a first drive station containing them by opening a fixing mechanism that fixes the drive rollers and / or drag rollers Support to replace the first trawl station, b) removing the drive rollers and / or support drive rollers to be replaced towards the side and / or upwards from the first drive station by means of a first manipulator, c) translation of the first manipulator that holds the drive rollers and / or support drive rollers removed from the first drive station to a first drive roller depot station and / or a first drive roller treatment station , d) deposition. of the drive rollers and / or support drive rollers held by the first manipulator, removed from the first drive station, at the first drive roller depot station and / or the first drive roller treatment station, e) removal of drive rollers and / or support drive rollers to be inserted in the first drive station of the first drive roller depot station and / or the first drive roller treatment station or a second drive station for depositing the drive roller and / or a second drive station for driving roller by means of the first manipulator and / or a second manipulator, f) translation of the first and / or second manipulator that holds, after step e), the drive rollers and / or the support drive rollers to the first drive station, g) insertion of the drag rollers and / or rollers support drag which are found after step f) in the first dragging station in the first dragging station by means of the first and / or the second manipulator.

These stages can be carried out in 'the alphabetical order of their denomination or in another order. For example, after the removal of the drive rollers from a driver by means of a manipulator, the drive rollers already held by this manipulator can be inserted into the driver before the extracted drive rollers are moved by the manipulator to a transport station. deposit of trailing roller and / or trawl roller treatment station and deposit there. Correspondingly, steps would be carried out concerning the removal of the drive rollers to be inserted in the drive of a drive roller depot station and / or drive roller treatment station before these drive rollers are inserted in the drive. .

Basically, the procedure is intended to select the sequence of the process steps in such a way that the transport paths are minimized.

In an embodiment of the method according to the invention, the drive rollers and / or support drive rollers treated in the first and / or the second drive roller treatment station are removed by the first and / or second manipulator of the first or second driving roller treatment station, after which the first and / or second manipulator that holds the drag rollers and / or drag rollers removed to the first and / or second drive roller depot station and then the drive rollers and / or support drive rollers removed by the first and / or second manipulator are inserted into the first and / or second drive tank of drive roller.

That is, the trailed feed rollers and / or drive rollers are stored after the treatment at the feed roll depot station before they are inserted back into a feed.

Obviously, the driving rollers and / or support drive rollers treated after the treatment can also be inserted directly - that is, without prior deposition in the drive station of drive roller - into a drive. This is already shown in the sequence of steps e) to g) in the procedure described above.

The procedure is preferably carried out automatically. In this regard, automatically means that after starting the procedure by an operator from the control panel of the installation of rolling in The procedure is developed without additional interaction with the operator. In this regard, the operator can be a human being or a computer system. Activation may be caused, for example, because, for example, one of the following cases appears: opening or damage of the surface in the pinch rollers, checked, for example, by a detection device that scans the surface for the establishment of surface defects, - breakage of the drive rollers rupture with rolling output or desire material 1 of the use of another type of drive roller, for example, as a consequence of changing the desired product, for example with modified requirements to the surface of the belt; as an example the lamination of fluted plates.

The process according to the invention can also be carried out semi-automatically; this means that in comparison with a procedure that is performed automatically, in addition to the start of the procedure, at least one other step is controlled by a human operator; for example, the translation of a crane is carried out by the control of a crane control suspended from the crane by a human operator.

With the present invention it is possible to insert trailing rollers optimally adjusted to the product in the trawl for the best product quality results without stopping the rolling plant quickly. This also makes it possible to optimally control the wear of the drive rollers - for example, it is possible to use, during the production of grooved plates, trailing rollers specially designed for this purpose, while the trailing rollers used for others are protected. Finnish-.

An existing manipulator according to the invention can also be used in another way, for example for the maintenance or replacement of components installed in the effective area of the manipulator of the rolling installation, for example wear plates of the feeding guides , checking the surface of the roller track rollers, the wear plates.

BRIEF DESCRIPTION OF THE FIGURES The Figure shows a side view of an embodiment of a driver according to the internal state of the art.

Figure Ib shows a driver according to Figure 1 from a raised oblique view.

Figure 2 shows a view of a follower according to Figure Ib from a raised oblique view with trailing roller and support drive roller arranged in a clamping device.

Figure 5 shows an alternative for the fixing mechanism for fixing the driving roller in the support area.

Figure .6 shows another embodiment of a driver according to the internal state of the art, in which the axis of rotation "11" lies between the support zone 7 and the activation zone 12.

The . Figure 7 'shows, in a representation analogous to Figure 2, how a manipulator configured as a crane on a driver is arranged according to the invention.

Figure 8 shows the arrangement of hot rolling stations, trawler station and winder station in a hot rolling plant according to the invention.

DESCRIPTION OF THE FORMS OF REALIZATION In Figure 7 a configured manipulator is arranged as crane 21 on a trawler 1. The crane 21 can advance with translation in crane trajectories 22a, 22b having a travel over the trawl station, winder station, roller treatment plant drag and roller change station. entrainment between the trawl station comprising the trawler 1 and the stations not represented station. trawl roller treatment and trawl roller deposit station.

Figure 8 shows how a plurality of drive systems 23a, 23b, 23c and several winder stations are arranged in a rolling mill winder of a hot rolling plant according to the invention. 24a, 24b, 24c along a longitudinal axis 25 of the « installation of hot rolling in the direction of the laminate of the tape. Also shown are feed guides 26a, 26b, 26c for the drive stations 23a, 23b, 23c. The rolling stations, hot from the Hot rolling mill installation are not represented for better understanding, they are arranged on the left of the 26th power guide. Beyond the last winder station 24c seen in the direction of the rolling of the belt there are, on the extension of the longitudinal axis 25 of the hot rolling plant, a drag roll storage station 27 and a drag roller treatment station 28. A manipulator 29 - indicated by a double date - that can be moved between the dragging stations 23a, 23b, 23c and the treatment station of drive roller 28 and the drive station of drive roller 27, performed as a crane, is also present. The crane trajectories 30a, 30b on which the crane can be moved are also represented. Since the manipulator 29 can also be moved between the hot-rolling stations not shown and the driving roller treatment station 28 and the driving roller storage station 27, the trajectories of the crane extend against the rolling direction, of the belt beyond the last pulling station 23a, viewed in the direction against the direction of advance of the belt. In the manipulator 29 is placed a device for the surface check 31 a and a device for polishing the drive rollers and / or support drive rollers 31 b. In addition to this there is a device for checking the surface of the rollers of dragging and / or supporting drive rollers 32a and a device for polishing the drive rollers and / or support drive rollers 32b that can be moved between the drive stations 23a, 23b, 23c and the processing station drive roller 28 and the drive roller deposit station 27.

LIST OF REFERENCES crawler frame drag roller drag roller rocker e e of turning support area Barrette hydraulic cylinder clamping frame axis of rotation area activation zone extraction frame arm axis 16 arm 17 ej e 18 moveable key device 19 hydraulic cylinder 20a, balancing buckets b 21 crane 22a, crane trajectory b 23a, drag station b, 23c- 24a, winder station b, 24c 25 e e longitudinal (from the hot rolling mill) 26a, feeding guides b, 26c · 27 drag roller deposit station 28 drag roller treatment station 29 manipulator 30th, crane trajectories to device for checking the surface b device for polishing the drive rollers and / or support rollers to device for checking the surface b 'device for the polishing of the drag rollers and / or support rollers

Claims

NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and therefore the content of the following is claimed as property: CLAIMS

1. - Hot rolling plant comprising, arranged successively, along a longitudinal axis of the hot rolling plant, - several hot rolling stations, - at least one trawler station, - at least one winder station, characterized in that in addition to the drive station and / or winder station are present as seen from the hot rolling stations in the direction of the winder station beyond the winder station in the extension of the longitudinal axis of the installation of the winder station. hot rolling at least one drive roller depot station and at least one track roller treatment station and where at least one manipulator is present which can be moved at least between the drive station and the treatment station of pinch roller and roller deposit station of trawl, where appropriate also hot-rolling stations.

2. - Hot rolling installation according to claim 1, characterized in that the manipulator is a crane that advances in crane trajectories that have a path at least above and / or next to the trawl station, winder station, installation of trailing roller treatment and trailing roller changing station, if necessary also on the hot rolling stations.

3. - Hot-rolling plant according to one of claims 1 or 2, characterized in that a device for checking the surface and / or a device for polishing the driving rollers and / or driving rollers is placed in the manipulator. support.

4. - Hot rolling installation according to one of claims 1 to 3, characterized in that in addition to the manipulator a transferable device is present between the driving station and the station. of trawl roller treatment and the drag roll deposit station for checking the surface of the drag rollers and / or support drag rollers and / or a device for polishing the drive rollers and / or support drive rollers.

5. - Procedure for the change, preferably automatic, of drag rollers and / or support rollers in a hot rolling plant according to one of claims 1 to 4, characterized in that includes the stages a) releasing the drive rollers and / or support drive rollers to be replaced through a first drive station containing them by opening a fixing mechanism that fixes the drive rollers and / or drive rollers support to replace the. first dragging station, b) removing the dragging rollers and / or supporting dragging rollers to be replaced towards the side and / or upwards from the first dragging station by means of a first manipulator, c) translation of the first manipulator that holds the drive rollers and / or support drive rollers removed from the first drive station to a first drive roller depot station and / or a first drive roller treatment station crawler, d) deposition of the drive rollers and / or support drive rollers held by the first manipulator, removed from the first drive station, in the first drive roller depot station and / or the first roller treatment station of the entrainer, e) removal of drive rollers and / or support drive rollers to be inserted in the first drive station of the first drive roller depot station and / or the first drive roller treatment station or a second drag roll storage station and / or a second drag roll treatment station by the first manipulator "and / or a second manipulator, f) translation of the first and / or second manipulator that its eta after the step e) the drive rollers and / or the drive rollers supporting the first drive station, g) insertion of the driving rollers and / or support rollers which are located after step f) in the first driving station in the first driving station by means of the first and / or second manipulator.

6. - Method according to claim 5, characterized in that the drive rollers and / or rollers support tractors treated in the first and / or second trawl roller treatment station are removed by the first and / or second manipulator of the first or second trawl roller treatment station, after which the first and second / or second manipulator that holds the drag rollers and / or support drag rollers removed to the first and / or second drag roller deposit station and then the driven drag rollers and / or drag rollers are inserted by means of the first and / or second manipulator in the first and / or the second drive station of drive roller.