EP2723512B1 - Drive roller changing system for drivers of a rolling mill system - Google Patents

Description

Field of engineering

The subject invention relates to a device and a method for changing drive rollers of drivers of a rolling mill. The preamble of claims 1 is based on the JP 4 009 203 ,

State of the art

In driving devices, also called drivers, metal strip is clamped between a pair of rollers, driven or deflected. Drivers are typically used in rolling mills of rolling mills, such as hot rolling mills, where they are placed in front of rolled reels of the coiler stations to adjust the strip tension in front of the reel by means of two rollers, namely the drive roller and the support drive roller. Steering drivers have the additional task of reducing sideways migrations of the rolled strip before reeling. For this purpose, for example, the pivotable drive roller is driven and employed against the stationary Stützreibreibrolle that the rolled strip undergoes a desired strip tension and a desired lateral displacement by the position of the drive roller relative to the Stützreibrolle.

Such steering drivers are for example off EP747147B1 or AT500689B1 known.
In EP747147B1 a steering driver is shown, the pivotable drive roller is mounted between two wings by means of the two ends of the driving roller axle. Both wings are rigidly connected to a torsion spring of a frame, which forms an axis of rotation for the wings.

In AT500689B1 discloses a similar steering driver, however, in which the wings can be pivoted independently of each other on a rotation axis of a frame.

The drive roller and the support drive roller of a steering actuator must be regularly cleaned and polished, as for example by carbon caking, on the reel to be reeled up dirt particles, or caused by tapping surface defects in the reeled tape, the surface of the drive roller and the support roller are uneven, which in turn may cause damage to the surface of the reeled tape.

In EP747147B1 or AT500689B1 the drive roller axle is mounted on a bearing area of the rocker, wherein the drive roller is located below the rocker. The bearings of the drive roller, in order to avoid damage during puncture, for example, provided by spring-activated balancing play.

A removal of the drive roller upwards is not possible, since such removal the rocker is in the way and blocks the way up. For removal to the bottom, right or left in the operating state, the path is blocked by the Stützreibrolle and the frame. Before a removal is possible, therefore, only an obstructed path must be opened.

In order to facilitate cleaning and polishing of the capstan and Stützreibrolle usually the pair of rollers supporting the swinging pair is pivoted by means of swing cylinders in an intermediate position; this is also necessary to replace the drive roller. The intermediate position is often reached after the pivoting of the pair of rockers by 180 °. Subsequently, the drive roller and the support drive roller in the installed state usually cleaned by hand and ground or polished. By the Cleaning and grinding or polishing in the system results in a security risk. This is because the people involved have to go inside the plant between the plant parts, which must be reliably turned off and blocked. In addition, there is a safety risk due to the time pressure required to carry out these activities, since the cleaning and grinding or polishing must be carried out in the time required for the work roll change of scaffolding time of 10 to 15 minutes. If, due to cleaning, sanding and polishing, it is not possible to produce a sufficiently uniform surface on the drive roller or support drive roller, or if it is damaged, the drive roller or support drive roller must be removed from the frame after swiveling the swinging arm and replaced with a new drive roller or support drive roller. This must be in accordance with the steering drivers EP747147B1 or AT500689B1 the entire swing construction including the drive pulley are removed. Due to the large number of fasteners to be solved and the mass of the frame together with the drive roller maintenance of drive rollers and Stützreibrollen causes a considerable amount of time. In addition, the drive roller is poorly accessible for maintenance when it is located between the wings.

According to the state of the art drivers are known which overcome the disadvantages of the prior art and which cause less time consuming work with less safety risks in the change of the driving roller than conventional drivers and methods.
Such a driver for a steel strip coiler has at least one support drive roller mounted on a frame, and at least one drive roller engageable with the support drive roller mounted on at least one rocker connected to the frame, the drive roller being mounted on a bearing area of the rocker,
in which
the storage area is open for insertion or for
Removing the drive roller to the side and / or up when the rocker position in operating position, and the driver has a fixing mechanism for fixing the drive roller to the storage area.
Under the storage area is to be understood the area of the rocker, in which the drive roller is attached to the rocker.

The storage area is open for insertion or removal of the drive roller to the side and / or upwards in position of the rocker in the operating position, therefore, the storage area is not an expansion of the drive roller to the side and / or up in the way. A drive roller can therefore be removed if necessary to the side and / or up from the rocker, without the rocker with the drive roller substantially remove from the operating position or rocker must be completely dismantled with the drive roller. Operating position is a position of the rocker to be taken, which is taken in normal operation of the driver.

The driver has a fixing mechanism for fixing the drive roller to the storage area. This ensures during operation that the drive roller does not undesirably break off to the side and / or upwards. In the fixed state, a controlled displacement of the drive roller in different operating positions is possible.
Preferably, the positioning of the drive roller to the support drive roller in the fixed state by changing the setting of the fixing mechanism in different positions can be changed.

According to one embodiment, the fixing mechanism comprises a displaceable latch, which is preferably fixable to the rocker.

According to another embodiment, the fixing mechanism comprises a folding device whose parts are in order at least one axis attached to the rocker are hinged, and which are fixable to the rocker. For example, it may be two interlockable arms that are locked by a movable wedge. Each of the arms works on a different axis.

The support drive roller is located below the drive roller. A removal of the support friction roller up is therefore not possible as long as the drive roller is installed in the driver. When the drive roller has been removed, the path for the support drive roller is open for removal upwards.

When the drive roller is mounted between a pair of rockers, the spacing of the rockers is preferably greater than the length of the support drive roller. This ensures that the support drive roller can be removed by the resulting due to removal of the drive roller free space upwards.

If the distance of the rockers in the operating position is less than the length of the Stützreibrolle, it is preferred that at least one of the rockers is displaceable or pivotable relative to the other rocker, when the drive roller is removed. In this way it is achieved that the support drive roller can be removed.

The steel strip coiler is preferably a steel strip coiler for hot strip.

Preferably, the driver is a steering driver.

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

The holding device, which may be a holding frame, for example, thus contains both the drive roller and the support drive roller.

This makes it possible, for removing or for inserting a pair of driving roller and supporting drive roller only to engage the holding device and to have to remove it from the driver.

Because the drive roller and the support drive roller need not be removed individually or inserted individually into the driver, removal and insertion can be accomplished more quickly.

The support drive roller can be mounted stationary or displaceable on the frame.

According to one embodiment, the traction roller axle and / or the Stützreibrollenachse around which the drive roller or the Stützreibrolle rotates from at least two Treibrollenachsteilen and / or Stützreibrolle Rollenachsteilen, wherein at least one of the Treibrollenachsteile releasably attached to the cylindrical body of the drive roller or Stützreibreibrolle - for example via a Connecting flange, a perforated disc with sliding driving pin, or claw coupling - shaft stub is executed. The stub shaft can be designed as a hollow shaft, in which a motor-driven shaft can be inserted to drive the drive roller or the support drive roller. This allows for a quick removal of the drive roller and / or Stützreibrolle from the driver, which reduces a caused by time pressure during capstan change security risk.

According to one embodiment of the driver, the support drive roller is laterally removable from the driver in the direction of its longitudinal axis. It can also be inserted laterally in the direction of its longitudinal axis into the driver.

In the in EP747147B1 or AT500689B1 shown drivers one end of the rocker is pivotable about an axis of rotation, while the other end of the rocker with a Actuating device such as a pressure medium cylinder, preferably a hydraulic cylinder, is connected. By adjusting this actuator, the rockers can be pivoted about its axis of rotation, for example, to enable the removal of the drive roller or to control or regulation of the distance of the drive roller and Stützreibrolle.
The storage area of the drive roller is located between the pivotable end and the end of the rocker connected to the actuating device.

Also in the driver according to the prior art, the rockers are pivotable about an axis of rotation arranged in a pivot axis of the rocker, and they are connected in an operating region with an actuating device. In this case, the storage area of the drive roller as in EP747147B1 or AT500689B1 between the axis of rotation range and the operating range.
According to another embodiment, the axis of rotation range may be between the storage area and the operating area. An advantage of such an embodiment is that when pressing the drive roller forces flow better into the rocker and for the rocker favorable stress conditions are generated. The effective distance of an actuating device acting on one end of the rocker can also be structurally more easily enlarged in such a construction than in FIG EP747147B1 or AT500689B1 executed embodiments. By increasing the effective distance equal forces can be achieved with smaller actuators, or achieve greater forces with the same actuators.

• Öffnen des Fixierungsmechanismus,
• Entnehmen der Treibrolle zur Seite und/oder nach oben aus dem Treiber,

umfasst.Another internal prior 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 includes the steps

• Opening the fixing mechanism,
• Remove the drive roller to the side and / or upwards from the driver,

includes.

By opening the fixing mechanism is meant that the fixation of the drive roller is solved at the storage area.

The support drive roller in a driver is held in the driver by fixation devices so as not to change position at all during normal operation or to change position beyond an acceptable level. The support drive roller can be fixed, so that no movement is possible. It may also be displaceable to an acceptable or desired extent. The degree of displaceability that is acceptable or desired depends on the respective operating state. In order to change the deflecting forces of the driver depending on the strip thickness and strip quality, for example, the distance of the axes of the driving roller and the supporting drive roller is variable to a certain extent.

• Lösen von Fixierungsvorrichtungen zur Fixierung der Stütztreibrolle im Treiber,
• Entnehmen der Stütztreibrolle nach oben aus dem Treiber, umfasst.

An embodiment of the method according to the internal state of the art is characterized in that, after the removal of the driving roller, there are additionally the steps

• Releasing fixation devices for fixing the support drive roller in the driver,
• Remove the support drive roller from the top of the driver.

By resulting from the removal of the drive roller opening and the support drive roller can be removed upwards from the driver.

• Lösen von Fixierungsvorrichtungen zur Fixierung der Stütztreibrolle im Treiber,
• Entnehmen der Stütztreibrolle durch seitliches Herausziehen aus dem Treiber.

According to another embodiment, the Stützreibrolle for removal laterally, that is, in the direction of its longitudinal axis, are pulled out of the driver. This can be before or after removing the drive roller according to the invention respectively. This can also be done while removing the drive roller from the driver; In this way, removal of the drive roller and the support drive roller can be carried out faster than if the two withdrawals take place successively. Then, the internal prior art method further includes the steps during removal of the capstan

• Releasing fixation devices for fixing the support drive roller in the driver,
• Remove the support drive roller by pulling it sideways out of the driver.

According to a preferred embodiment, the drive roller and the support drive roller are removed from the driver in pairs by removing a holding device in which a pair of drive roller and support drive roller are arranged.

• Figur 1a zeigt eine Seitenansicht einer Ausführungsform eines Treibers nach internem Stand der Technik.
• Figur 1b zeigt einen Treiber gemäß Figur 1a aus einer erhöhten Schrägansicht.
• Figur 2 zeigt zeigt eine Ansicht eines Treibers gemäß Figur 1b aus einer erhöhten Schrägansicht mit in einer Haltevorrichtung angeordneter Treibrolle und Stütztreibrolle.
• Figur 3 zeigt eine Ausführungsform eines Treibers nach internem Stand der Technik, bei der sich der Drehachsenbereich 11 zwischen dem Lagerbereich 7 und dem Betätigungsbereich 12 befindet.
• Figur 4 zeigt einen Treiber nach internem Stand der Technik mit entnommener Stütztreibrolle aus einer erhöhten Schrägansicht.
• Figur 5 zeigt eine Alternative für den Fixierungsmechanismus zur Fixierung der Treibrolle am Lagerbereich.
• Figur 6 zeigt eine weitere Ausführungsform eines-Treibers nach internem Stand der Technik, bei der sich der Drehachsenbereich 11 zwischen dem Lagerbereich 7 und dem Betätigungsbereich 12 befindet.
• Figur 1a zeigt eine Seitenansicht eines Treibers 1 nach internem Stand der Technik für eine Stahlbandhaspelanlage, speziell einen Lenktreiber für eine Warmbandhaspelanlage. Der Treiber 1 umfasst eine an einem Rahmen 2 gelagerten Stütztreibrolle 3, und eine gegenüber der Stütztreibrolle anstellbaren Treibrolle 4. In der Figur 1 sind die Treibrolle 4 und die Stütztreibrolle 3 lediglich durch strichlierte Linien dargestellt, da sie in der Seitenansicht vom Rahmen 2 und anderen Teilen des Treibers verdeckt sind. Die Treibrolle 4 ist an einem Paar von mit dem Rahmen verbundenen Schwingen 5a,5b gelagert. In der Seitenansicht der Figur 1 ist nur eine Schwinge 5a zu sehen, die zweite Schwinge 5b des Paares wird in dieser Ansicht durch Schwinge 5a verdeckt. Das Paar der Schwingen 5a,5b befindet sich in Betriebsposition. Das Paar der Schwingen 5a,5b ist um eine Drehachse 6 des Rahmens 2 verschwenkbar. Die Treibrolle 4 ist an einem Lagerbereich 7 der Schwingen angebracht. Der Lagerbereich 7 ist offen zur Einfügung beziehungsweise zur Entnahme der Treibrolle 4 zur Seite nach oben bei Stellung der Schwingen in Betriebsposition. Der Lagerbereich ist mit einer gewellten geschlossenen Linie gezeigt. Ein Fixierungsmechanismus zur Fixierung der Treibrolle 4 am Lagerbereich 7 ist vorhanden, er ist als verschiebbarer Riegel 8 ausgeführt. In der dargestellten Position des Riegels 8 ist dieser noch nicht in seine Endposition, in der er die Treibrolle 4 am Lagerbereich 7 fixiert, verschoben. Zur übersichtlichen Darstellung ist ein Teil der Schwinge 5 geschnitten dargestellt, so dass der Verlauf des Riegels 8 in der Schwinge 5 teilweise gezeigt ist. Wenn der Riegel 8 aus der dargestellten Position in seine Endposition, wie in der folgenden Figur 1b ersichtlich, gefahren wird, wird einerseits die Treibrolle 4 fixiert, und andererseits werden die Ausbalancierungstöpfe 20a, 20b zur Spielfrei-Stellung der Lager der Treibrolle 4 aktiviert.
• Figur 1b zeigt einen Treiber 1 gemäß Figur 1a aus einer erhöhten Schrägansicht. Zu Figur 1a gleiche Teile sind mit gleichen Bezugszeichen versehen. Im Unterschied zu Figur 1a ist der Riegel 8 des Fixierungsmechanismus in seiner Endposition dargestellt, in welcher er die Treibrolle am Lagerbereich 7 der Schwingen 5a,5b fixiert. Treibrolle 4 und Stütztreibrolle 3 sind besser zu erkennen als in Figur 1a. Die zweite Schwinge 5b des Paares von Schwingen 5a,5b ist im Gegensatz zu Figur 1a erkennbar.

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

• FIG. 1a shows a side view of an embodiment of an internal driver according to the invention.
• FIG. 1b shows a driver according to FIG. 1a from an elevated perspective view.
• FIG. 2 shows a view of a driver according to FIG. 1b from an elevated oblique view arranged in a holding device drive roller and Stützreibrolle.
• FIG. 3 shows an embodiment of an internal drive according to the invention, in which the axis of rotation of the axis 11 between the storage area 7 and the actuating portion 12 is located.
• FIG. 4 shows an driver according to the prior art with removed Stützreibrolle from an elevated perspective view.
• FIG. 5 shows an alternative for the fixing mechanism for fixing the drive roller to the storage area.
• FIG. 6 shows a further embodiment of a driver according to the prior art, in which the Rotary axis region 11 between the storage area 7 and the actuating portion 12 is located.
• FIG. 1a shows a side view of an internal driver according to the invention for a steel strip coiler, especially a steering driver for a hot strip coiler. The driver 1 comprises a supporting friction roller 3 mounted on a frame 2, and a driving roller 4 which can be engaged with respect to the support driving roller 4 FIG. 1 For example, the drive roller 4 and the support drive roller 3 are shown by dashed lines only because they are hidden in the side view of the frame 2 and other parts of the driver. The capstan 4 is supported on a pair of wings 5a, 5b connected to the frame. In the side view of FIG. 1 If only one rocker 5a can be seen, the second rocker 5b of the pair is concealed in this view by rocker 5a. The pair of rockers 5a, 5b is in the operating position. The pair of rockers 5a, 5b is pivotable about an axis of rotation 6 of the frame 2. The drive roller 4 is attached to a storage area 7 of the rockers. The storage area 7 is open for insertion or for removal of the drive roller 4 to the side upwards in the position of the rockers in the operating position. The storage area is shown with a corrugated closed line. A fixing mechanism for fixing the drive roller 4 at the storage area 7 is present, it is designed as a sliding latch 8. In the illustrated position of the bolt 8 this is not yet in its final position in which he fixed the drive roller 4 at the storage area 7, moved. For clarity, a part of the rocker 5 is shown cut, so that the course of the bolt 8 in the rocker 5 is partially shown. When the latch 8 from the position shown to its end position, as in the following FIG. 1b can be seen, is driven, on the one hand, the drive roller 4 is fixed, and on the other hand, the Ausbalancierungstöpfe 20a, 20b for play-free position of the bearings of the drive roller 4 is activated.
• FIG. 1b shows a driver 1 according to FIG. 1a from an elevated perspective view. To FIG. 1a the same parts are provided with the same reference numerals. In contrast to FIG. 1a the bolt 8 of the fixing mechanism is shown in its end position, in which it fixes the drive roller on the bearing portion 7 of the wings 5a, 5b. Drive roller 4 and support drive roller 3 are better visible than in FIG. 1a , The second rocker 5b of the pair of rockers 5a, 5b is in contrast to FIG. 1a recognizable.

As well in FIG. 1a as well as in FIG. 1b is one end of the rockers 5a, 5b respectively connected to an actuating device, especially a hydraulic cylinder 9a, 9b. By adjusting these hydraulic cylinders 9a, 9b, the rockers 5a, 5b can be pivoted about their axis of rotation 6, for example, to adjust the distance from the driving roller 4 to the supporting drive roller 3.
The storage area 7 of the drive roller is located between the pivotable about the rotation axis 6 and the end connected to the hydraulic cylinder 9a, 9b of the actuator end of the wings 5a, 5b.

FIG. 2 shows another view of a driver according to FIG. 1b from an elevated perspective view. To FIG. 1b the same parts are provided with the same reference numerals. In contrast to FIG. 1b the bolt 8 of the fixing mechanism is shown in its initial position in which it does not fix the drive roller 4 to the storage area 7. Drive roller 4 and support drive roller 3 are not installed in the driver 1. They are arranged in a holding device, especially a holding frame 10. Installation or removal of the drive roller 4 and support drive roller 3 takes place by inserting or removing the support frame 10 in the frame 2 of the driver. 1

FIG. 3 shows a view of an internal driver in side view analogous to FIG. 1a , To FIG. 1a the same parts are provided with the same reference numerals. to better clarity, drive roller 4 and support friction roller 3 are not shown. The rotation axis 6 is arranged in a rotation axis region 11 of the rocker 5a. The hydraulic cylinder 9a is disposed in an operating portion 12 of the rocker 5a. In contrast to FIG. 1a is the rotation axis region 11 between the storage area 7 and the actuating portion 12th

FIG. 4 shows a view of an internal state of the art analogous to FIG. 1b from an elevated perspective view. To FIG. 1b the same parts are provided with the same reference numerals. In the driver 1, no drive roller is used and not shown accordingly. The support drive roller 3 is also not used. FIG. 4 shows the Stützreibrolle in removed state. The support drive roller 3 can be removed laterally in the direction of its longitudinal axis from the driver 1 or inserted into the driver 1. FIG. 4 shows a removal frame, on which the support drive roller 3 is executed from the driver 1 or is inserted into the driver 1.

The fixing mechanism for fixing the drive roller 4 on the storage area 7 need not be designed as a sliding latch 8.

FIG. 5 shows an alternative fixing mechanism comprising a folding device with two folding arms 14, 16 which are locked by a movable wedge device 18. Each of the arms 14, 16 folds about another axis, arm 14 about axis 15, and arm 16 about axis 17. The two arms 14, 16 are connected via the axes 15, 17 with the rocker 5a. The movable wedge device 18 is attached to the arm 16; by a hydraulic cylinder 19, it is movable. Arm 14 has bulges that fit in indentations on the movable wedge device 18. When closing the fixing mechanism, the arms 14, 16 fold into the position shown, and the hydraulic cylinder 19 moves the movable wedge device 18 such that the indentations slide over the bulges. Thus, the two arms 14, 16 are locked together.

FIG. 6 shows a view of an internal driver in side view analogous to FIG. 1a and FIG. 3 , To FIG. 1a the same parts are provided with the same reference numerals. The rotation axis 6 is arranged in a rotation axis region 11 of the rocker 5a. The hydraulic cylinder 9a is disposed in an operating portion 12 of the rocker 5a. As in FIG. 3 is unlike FIG. 1a the rotation axis area 11 between the storage area 7 and the operating area 12. FIG. 3 and FIG. 6 differ in the shape of the rocker 5a and the way the drive roller is mounted on the bearing area of the rocker.

When using drivers like EP747147B1 or AT500689B1 Be known drive roller and Stützreibrolle individually by means of hall crane removed from the driver and replaced with a prepared in a workshop drive roller or Stützreibrolle. An exchange usually takes between 5 and 10 hours and is therefore only carried out in the course of a planned shutdown of the rolling mill. With the above-described driver of the prior art, replacement can be performed in 10 to 15 minutes. An exchange can therefore also be carried out during the operation of the rolling mill in a short rolling break or simultaneously with a work roll change. Accordingly, the surfaces of the capstan rollers and supporting rollers do not need to - as when using drivers like EP747147B1 or AT500689B1 known to be used in the driver polished, but it is possible to perform without stopping the rolling mill polishing and thus perfect surface quality outside the driver.

When using the above-described driver according to the prior art, when using rolling mills, which for use with drivers like out EP747147B1 or AT500689B1 are known, an exchange of the driver rollers or Stützreibrollen dependent on the availability of the hall crane of the rolling mill. In addition, spare rolls are usually stored and processed in the spatially distant so-called roll shop, so that long transport routes have to be mastered. As a result, a flexible, to changing production needs or changing requirements on drive rollers and Stützreibrollen detailed, changing the drive rollers and Stützreibrollen difficult.

Summary of the invention Technical task

It is the object of the present invention to provide apparatus and methods which, especially when using the above-described driver according to the prior art, allow for a more flexible and rapid change of drive rollers and supporting drive rollers compared with the prior art and their processing in the immediate vicinity of the driver ,

Technical solution

This object is achieved by a hot rolling mill, according to claim 1.

Driver roll storage station, driver roll preparation station and manipulator are parts of a capstan exchange system.
If several coiling stations are present, these parts are preferably arranged beyond the last coiling station in the direction of strip travel.

If there are multiple driver stations and / or multiple driver roll storage stations and / or multiple driver roll preparation stations, the manipulator is moveable between all of these driver stations and driver roll preparation stations and driver roll storage stations.

The driver roll storage station and driver roll preparation station adjacent to the driver station and / or coiler station means that they are located in close proximity at a distance of up to 40 meters, preferably up to 30 meters, more preferably up to 20 meters, most preferably up to 10 meters are.
This shortens transport routes and saves time.

The longitudinal axis of the hot rolling mill in strip rolling direction - also called strip running direction - to understand, as in the direction of the hot rolling stations to the coiler station.

By the term hot rolling stations are meant the parts of the hot rolling mill in which rolling is carried out to produce hot strip.

The term driver station is to be understood as meaning a part of the hot rolling mill in which a driver drives the hot strip. If there are multiple drivers, the hot rolling mill will have multiple driver stations, as in FIG. 8 shown.

The term coiling station means a part of the hot rolling mill in which the hot strip is wound on a reel. If several reels are present, the hot rolling mill comprises several reel stations, as in FIG. 8 shown.

A driver station is not part of a coiler station.

With driver rollers while the roles are meant that are used in the driver station for driving, so driving rollers and Stützreibrollen.

The term manipulator is to be understood as an apparatus by means of which manipulated components of the hot rolling mill can be removed, for example, and / or insertion of driving rollers from or into the driver station, driver roller preparation station, driver roller storage station, for example a crane or a robot.

For example, in the driver roll preparation station, driver rolls are ground and / or polished, or driver rolls are assembled or disassembled. Such prepared driver rolls can subsequently be inserted into the driver roll storage station. The driver roll storage station may also contain unprecedented driver rolls that have never been used before.

The inventive arrangement of driver roller storage station and driver roller processing station and the provision of a Manipulator can be shortened when replacing drive wheels transport routes and dependence on the availability of the hall crane can be avoided. To achieve maximum benefit in terms of transport paths, the parts of the drive roller changing system are arranged as close to the driver stations. To maximize transport path benefits, the driver roll storage station and

Driver roll preparation station as close as possible to each other.

It is therefore preferred if the driver roller storage station, driver roller processing station and manipulator are arranged in the rolling hall of the hot rolling mill.

Advantageous Effects of the Invention

According to a preferred embodiment of the present invention, the manipulator is a crane running on at least above and / or next to the driver station, reel station, capstan roller system and capstan, possibly also over the hot rolling stations.

Preferably, a manipulator is present. Thus, the construction effort is limited. But 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 surface inspection and / or a device for polishing the driving rollers and / or supporting friction rollers is attached to the manipulator.
Testing and polishing can take place while the driver rolls are installed in the driver station or after they have been removed.

According to another preferred embodiment of the present invention, in addition to the manipulator movable between the driver station and the driver roll preparation station and the driver roll storage station
Apparatus for surface testing of the driving rollers and / or supporting rollers,
and or
Apparatus for polishing the driving rollers and / or supporting friction rollers
available.
Testing and polishing can take place while the driver rolls are installed in the driver station or after they have been removed.

In these two embodiments, with a movable manipulator devices for surface testing of the driving rollers and / or Stützreibrollen,
and / or devices for polishing the drive rollers and / or Stützreibrollen
simply be transported to the driver rolls.

Another object of the present invention is a method according to claim 5 for, preferably automatic, change of driving rollers and / or Stützreibrollen in a hot rolling mill according to the invention.

These steps can be done in alphabetical order of their name, or in a different order. For example, after removing driver rolls from a driver by means of a manipulator, driver rolls already held by this manipulator can be inserted into the driver before the removed driver rolls are moved from the manipulator to a driver roll storage station and / or driver roll preparation station and stored there. Accordingly, steps relating to the removal of driver roles to be inserted into the driver from a driver roll storage station and / or driver roll preparation station would occur before these driver rolls are inserted into the driver.

In principle, the method attempts to select the sequence of method steps in such a way that the transport paths are minimized.

In one embodiment of the method according to the invention, prepared drive rollers and / or support drive rollers are prepared in the first and / or second driver roller processing station
taken from the first or second driver roll preparation station by means of the first and / or second manipulator,
then
the first and / or second manipulator holding the removed drive rollers and / or support drive rollers move to the first and / or second driver roller storage station,
and then
the removed drive rollers and / or support rollers inserted by means of the first and / or second manipulator in the first and / or the second driver roller storage station.

That is, preprocessed drive rollers and / or support drive rollers are stored in the driver roll storage station after conditioning before being reinserted into a driver.

Of course, treated drive rollers and / or Stützreibrollen after processing also directly - that is, without prior placement in the Treibrollenspeicherstation - are used in a driver. This is already shown in the sequence of steps e) to g) in the above described methods.

• Aufpackung oder Oberflächenbeschädigung an den Treiberrollen, festgestellt beispielsweise durch eine die Oberfläche abtastende Detektionsvorrichtung zur Ermittlung von Oberflächenfehlern,
• Bruch der Treiberrollen
• Ausbruch von Lager oder Material
• Wunsch nach Einsatz eines anderen Treiberrollentyps, beispielsweise infolge Wechsel des gewünschten Produktes, etwa mit geänderten Ansprüchen an die Bandoberfläche; als Beispiel das Walzen von Riffelblechen

The method preferably takes place automatically. This automatically means that after the triggering of the procedure by an operator from the control panel of the hot rolling mill, the procedure runs without further interaction with the operator. The operator can be a human or a computer system.
The triggering may be caused, for example, by the occurrence of, for example, one of the following cases:

• Packing or surface damage to the driver rollers, determined, for example, by a surface-scanning detection device for detecting surface defects,
• Break of the driver rolls
• Outbreak of stock or material
• Desire to use a different type of driver roller, for example, due to change of the desired product, such as with changed demands on the belt surface; as an example the rolling of checker plates

The process according to the invention can also be semiautomatic; that is, at least one further step is controlled by a human operator in addition to triggering the method, as compared to an automatic procedure; For example, the operation of a crane becomes the operation of one of the crane depending crane control done by a human operator.

With the present invention, it is possible to use for the best quality results of the product without standstill of the rolling mill quickly optimally adapted to the product driver rollers in the driver. Thus, the wear of the driver rollers can be optimally controlled - for example, it is possible to resort in the production of Riffelblechen specially provided for this purpose driver roles, while used for other purposes driver roles are spared.

In addition, a manipulator present according to the invention can also be used differently, for example for the maintenance or replacement of components of the rolling mill system installed in the effective range of the manipulator, for example wear plates of the inlet guides, surface inspection of the roller table rollers, the wear plates.

Brief description of the drawings

• FIG. 1a shows a side view of an embodiment of an internal driver according to the invention.
• FIG. 1b shows a driver according to FIG. 1a from an elevated perspective view.
• FIG. 2 shows a view of a driver according to FIG. 1b from an elevated oblique view arranged in a holding device drive roller and Stützreibrolle.
• FIG. 3 shows an embodiment of an internal drive according to the invention, in which the axis of rotation of the axis 11 between the storage area 7 and the actuating portion 12 is located.
• FIG. 4 shows an driver according to the prior art with removed Stützreibrolle from an elevated perspective view.
• FIG. 5 shows an alternative for the fixing mechanism for fixing the drive roller to the storage area.
• FIG. 6 shows a further embodiment of an internal driver according to the invention, in which the axis of rotation of the axis 11 between the storage area 7 and the actuating portion 12 is located.
• FIG. 7 indicates in FIG. 2 analogous representation of how inventively arranged as a crane manipulator is arranged over a driver.
• FIG. 8 shows the arrangement of hot rolling stations, driver station and coiler station in a hot rolling mill according to the invention.

Description of the embodiments

In FIG. 7 is designed as a crane 21 trained manipulator on a driver 1 is arranged. The crane 21 running continuously above the driver station 1 driver station and the stations not shown driver roller processing station and driver roller storage station above on driver station, reel station, drive roller conditioning system and driving roller changing station extending crane runways 22a, 22b.

FIG. 8 shows how a plurality of driver stations 23a, 23b, 23c and a plurality of coiler stations 24a, 24b, 24c along a longitudinal axis 25 of the hot rolling mill in strip rolling direction are arranged in a rolling mill coiler of a hot rolling mill according to the invention. Inlet guides 26a, 26b, 26c for the driver stations 23a, 23b, 23c are also shown. Hot rolling stations of the hot rolling mill are not shown for clarity, they are left of the inlet guide 26 a arranged.
Beyond the last coiler station 24c seen in the strip rolling direction, a driver roller storage station 27 and a driver roller processing station 28 are present on the extension of the longitudinal axis 25 of the hot rolling mill. One between the driver stations 23a, 23b, 23c and the Driver roller processing station 28 and the driver roller storage station 27 movable - indicated by a double arrow - manipulator 29, designed as a crane, is also available. The crane runways 30a, 30b on which the crane is movable are also shown. Since the manipulator 29 can also be moved between the hot rolling stations (not shown) and the driver roller processing station 28 and the driver roller storage station 27, the crane tracks extend against the strip rolling direction beyond the last driver station 23a seen in the direction against the strip running direction.

On the manipulator 29, a surface inspection device 31a and a device for polishing the driving rollers and / or supporting friction rollers 31b are mounted. In addition to this are
a
Apparatus for surface testing of the driving rollers and / or supporting friction rollers 32a,
and a
Apparatus for polishing the driving rollers and / or supporting friction rollers 32b
present, which are movable between the driver stations 23a, 23b, 23c and the driver roller processing station 28 and the driver roller storage station 27.

List of reference numbers

1

driver

2

frame

3

Supporting driving roller

4

capstan roller

5a, 5b

wing

6

axis of rotation

7

storage area

8th

bars

9a, 9b

hydraulic cylinders

10

holding frame

11

Rotary axis range

12

operating range

13

sampling frame

14

poor

15

axis

16

poor

17

axis

18

Movable wedge device

19

hydraulic cylinders

20a, 20b

Ausbalancierungstöpfe

21

crane

22a, 22b

crane runway

23a, 23b, 23c

driver station

24a, 24b, 24c

coiling station

25

Longitudinal axis (of the hot rolling mill)

26a, 26b, 26c

incoming tours

27

Driver roll storage station

28

Driver roll preparation station

29

manipulator

30a, 30b

runways

31a

Device for surface inspection

31b

Apparatus for polishing the driving rollers and / or supporting friction rollers

32a

Device for surface inspection

32b

Apparatus for polishing the driving rollers and / or supporting friction rollers

Claims (6)

1. Hot rolling mill system, including

   - several hot rolling stations,

   - at least one driver station (23),

   - at least one coiler station (24)
   arranged consecutively along a longitudinal axis of the hot rolling mill system
   characterised in that
   aside from the driver station (23) and/or coiler station (24) viewed from the hot rolling stations in the direction of the coiler station (24), at least one driver roller storage station (27) and at least one driver roller preparation station (28) are present beyond the coiler station (24) on the extension of the longitudinal axis of the hot rolling mill system,
   and that at least one moveable manipulator (29) is present at least between the driver station (23) and the driver roller preparation station (28) and the driver roller storage station (27), if necessary also the hot rolling stations.
2. Hot rolling mill system according to claim 1, characterised in that the manipulator is a crane running on least crane runways (30) travelling above and/or adjacent to driver stations (23), coiler stations (24), driver roller preparation system and driver roller changing system, if necessary also by way of the hot rolling stations.
3. Hot rolling mill system according to claim 1 or 2, characterized in that an apparatus for surface examination and/or an apparatus for polishing the drive rollers and/or supporting drive rollers (31b) is attached to the manipulator.
4. Hot rolling mill system according to one of claims 1 to 3, characterised in that, in addition to the manipulator (29), an apparatus for surface examination of the drive rollers and/or supporting drive rollers (32a) and/or an apparatus for polishing the drive rollers and/or supporting drive rollers (32b) is present between the driver station (23) and the driver roller preparation station (28) and the driver roller storage station (27).
5. Method for the preferably automatic changeover of drive rollers and/or supporting drive rollers in a hot rolling mill system according to one of claims 1 to 4, wherein it includes the steps

   a) releasing the drive rollers and/or supporting drive rollers to be replaced by means of a first driver station (23) containing the latter by opening a fixing mechanism of the first driver station which fixes the drive rollers and/or supporting drive rollers to be replaced,

   b) removing the drive rollers and/or supporting drive rollers to be replaced to the side or upwards from the first driver station by means of a first manipulator,

   c) moving the first manipulator supporting the drive rollers and/or supporting drive rollers removed from the first driver station to a first driver roller storage station (27) and/or a first driver roller preparation station (28),

   d) depositing the drive rollers and/or supporting drive rollers supported by the first manipulator and removed from the first driver station (23) in the first driver roller storage station (27) and/or the first driver roller preparation station (28),

   e) removing drive rollers and/or supporting drive rollers to be inserted into the first driver station from
   the first driver roller storage station (27) and/or
   the first driver roller preparation station (28)
   or from
   a second driver roller storage station (27) and/or
   a second driver roller preparation station (28),
   by means of the first manipulator (29) and/or a second manipulator (29).

   f) moving the first and/or second manipulator (29) supporting the drive rollers and/or supporting drive rollers according to step e) to the first driver station,

   g) inserting the drive rollers and/or supporting drive rollers located on the first driver station according to step f) into the first driver station by means of the first and/or second manipulator (29).
6. Method according to claim 5, characterised in that drive rollers and/or supporting drive rollers prepared in the first and/or second driver roller preparation station (28) are removed from the first or second driver roller preparation station (28) by means of the first and/or second manipulator (28),
   then the first and/or second manipulator (29) supporting the removed drive rollers and/or supporting drive rollers is moved to the first and/or second driver roller storage station (27) and then
   the removed drive rollers and/or supporting drive rollers are inserted into the first and/or the second driver roller storage station (27) by means of the first and/or second manipulator (29).

Images