Note: Descriptions are shown in the official language in which they were submitted.
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Description
Title of the invention
Strip processing device
Background of the invention
The present invention relates to a strip processing device
comprising a strip processing cassette for a rolling mill, and
a method for removing the strip processing cassette from the
strip processing device.
Prior art
In driving devices, also referred to as drivers, metal strip is
clamped between a pair of rollers and driven or deflected.
Drivers are typically used in rolling trains of rolling mills,
for example hot strip rolling mills, where they are arranged
upstream of rolled-strip coilers of the coiling stations in
order to set the strip tension upstream of the coiler by means
of two rolls, namely the driving roller and the supporting
driving roller.
Directional drivers have the additional object of reducing
lateral creeping of the rolled strip prior to coiling. To this
end, for example the pivotable driving roller is actuated and
positioned against the fixed supporting driving roller in such
a way that, as a result of the position of the driving roller
with respect to the supporting driving roller, the rolled strip
experiences a desired strip tension and a desired lateral
displacement.
Such directional drivers are known, for example, from
EP747147B1 or AT500689B1.
EP747147B1 presents a directional driver, the pivotable driving
roller of which is arranged mounted between two rockers by
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means of the two ends of the driving roller axle. The two
rockers are connected rigidly to a torsion spring of a
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frame which forms an axle for the rockers.
AT500689B1 discloses a similar directional driver, in which,
however, the rockers can be pivoted independently of one
another on an axle of a frame.
The driving roller and the supporting driving roller of a
directional driver have to be cleaned and polished regularly,
since, for example as a result of carbon caking, particles of
dirt present on the strip to be coiled, or as a result of
surface defects in the strip to be coiled which are brought
about during the first pass, the surface of the driving roller
and of the supporting roller become nonhomogeneous, which can
in turn lead to damage to the surface of the strip to be
coiled.
In EP747147B1 or AT500689B1, the driving roller axle is mounted
on a bearing region of the rockers, with the driving roller
being located in each case underneath the rocker. In order to
avoid damage during the first pass misalignment, the bearings
of the driving roller are placed in a play-free setting using,
for example, spring-activated balancing means.
It is not possible to remove the driving roller in the upward
direction, since the rocker is in the way of such a removal and
blocks the upward path. For downward removal, to the right or
to the left, in the operating state the path is blocked by the
supporting driving roller and the frame. Before removal becomes
possible, a blocked path therefore has to be opened.
In order to make it possible to clean and polish the driving
roller and the supporting driving roller, the pair of rockers
on which the driving roller is mounted is normally pivoted by
means of rocker cylinders into an intermediate position; this
is likewise necessary for exchanging the driving roller. The
intermediate position is often reached after the pair of
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rockers has been pivoted through 1800. Subsequently, the
driving roller and the supporting
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driving roller are usually cleaned and sanded or polished by
hand in the installed state. Cleaning, sanding and polishing in
the plant constitute a safety risk. This is because the persons
involved with these processes have to position themselves
between the plant components within the plant, which plant
components thus have to be reliably shutdown and blocked. In
addition, there is a safety risk due to the time pressure for
carrying out these tasks, since cleaning and sanding or
polishing have to be carried out in the time period of 10 to
15 minutes required for changing the working rolls of
frameworks. If cleaning, sanding and polishing do not produce a
sufficiently homogeneous surface on the driving roller or
supporting driving roller, or in the event of damage, the
driving roller or the supporting driving roller has to be
removed from the frame after pivoting of the rockers, and
exchanged for a new driving roller or supporting driving
roller. To this end, in the case of directional drivers
according to EP747147B1 or AT500689B1, the entire rocker
structure, together with the driving roller, has to be
disinstalled. Owing to the multiplicity of connecting elements
to be released and the mass of the frame together with the
driving roller, maintenance of driving rollers and supporting
driving rollers involves a significant and time-consuming
amount of work. Furthermore, it is not easy to access the
driving roller for maintenance work when it is arranged between
the rockers.
According to the internal prior art, drivers are known which
overcome the disadvantages of the prior art and which involve a
less time-consuming amount of work with fewer safety risks when
changing the driving rollers than conventional drivers and
methods.
Such a driver for a steel strip coiling plant has at least one
supporting driving roller mounted on a frame and at least one
driving roller which can be adjusted with respect to the
supporting driving roller and is mounted on at least one rocker
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connected to the frame, wherein the driving roller is attached
to a bearing region of the rocker,
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wherein
the bearing region is open for the insertion or removal of the
driving roller to the side and/or in the upward direction when
the rocker is positioned in the operating position, and the
driver has a securing mechanism for securing the driving roller
at the bearing region.
The bearing region is to be understood as the region of the
rocker in which the driving roller is attached to the rocker.
The bearing region is open for the insertion or removal of the
driving roller to the side and/or in the upward direction when
the rocker is positioned in the operating position, and
therefore the bearing region does not prevent the driving
roller from being disinstalled to the side and/or in the upward
direction. A driving roller can therefore be removed from the
rocker to the side and/or in the upward direction as required
without the rocker together with the driving roller having to
be removed substantially from the operating position or without
the rocker together with the driving roller having to be
completely dismantled. Operating position to be understood as a
position of the rocker which is assumed during normal operation
of the driver.
The driver has a securing mechanism for securing the driving
roller at the bearing region. This ensures during operation
that the driving roller does not undesirably veer off to the
side and/or in the upward direction. In the secured state,
controlled displacement of the driving roller into different
operating positions is possible.
The positioning of the driving roller with respect to the
supporting driving roller in the secured state can preferably
be changed by changing the setting of the securing mechanism to
different positions.
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According to one embodiment, the securing mechanism comprises a
displaceable bar, which can preferably be secured to the
rocker.
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According to another embodiment, the securing mechanism
comprises a swing-action device, the components of which can be
swung about at least one axle fastened to the rocker, and which
can be secured to the rocker. For example, said swing-action
device may involve two arms which can be swung into one another
and which are locked by a displaceable wedge. Each of the arms
swings about a different axle here.
The supporting driving roller is located underneath the driving
roller. It is therefore not possible to remove the supporting
driving roller in the upward direction while the driving roller
is installed in the driver. If the driving roller has been
removed, the path for removing the supporting driving roller in
the upward direction is open.
If the driving roller is mounted between a pair of rockers, the
distance between the rockers is preferably greater than the
length of the supporting driving roller. This ensures that the
supporting driving roller can be removed in the upward
direction as a result of the free space produced by the removal
of the driving roller.
If the distance between the rockers in the operating position
is less than the length of the supporting driving roller, it is
preferred for at least one of the rockers to be able to be
displaced or pivoted in relation to the other rocker when the
driving roller has been disinstalled. As a result of this, the
supporting driving roller can be removed.
The steel strip coiler is preferably a steel strip coiler for a
hot strip.
The driver is preferably a directional driver.
According to one preferred embodiment, the driving roller and
the supporting driving roller are arranged in a holding device.
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The holding device, which may be for example a holding frame,
thus contains both the driving roller and the supporting
driving roller.
As a result, in order to remove or insert a pair consisting of
a driving roller and a supporting driving roller, all that is
required is to act on the holding device and to remove it from
the driver.
By virtue of the fact that the driving roller and supporting
driving roller do not have to be removed individually from or
inserted individually into the driver, the removal and
insertion can be carried out more quickly.
The supporting driving roller may be mounted on the frame in a
fixed or displaceable manner.
According to one embodiment, the driving roller axle and/or the
supporting driving roller axle about which the driving roller
or the supporting driving roller rotates comprise/comprises at
least two driving roller axle parts and/or supporting driving
roller axle parts, wherein at least one of the driving roller
axle parts is configured as a shaft stub which is releasably
fastened - for example via a connecting flange, a perforated
disk having displaceable drive pins, or a claw coupling - to
the cylindrical body of the driving roller or supporting
driving roller. The shaft stub can be configured here as a
hollow shaft, into which a motor-driven shaft can be introduced
for driving the driving roller or the supporting driving
roller. This makes it possible to remove the driving roller
and/or supporting driving roller quickly from the driver, and
this reduces a safety risk caused by time pressure when
changing the driving rollers.
According to one embodiment of the driver, the supporting
driving roller can be removed from the driver laterally in the
direction of its longitudinal axis. It can also be introduced
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into the driver laterally in the direction of its longitudinal
axis.
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In the drivers shown in EP747147B1 or AT500689B1, one end of
the rockers can be rotated about an axle while the other end of
the rockers is connected to an actuating device such as, for
example, a pressure-medium cylinder, preferably a hydraulic
cylinder. By adjusting this actuating device, the rockers can
be pivoted about their axle, for example in order to permit the
removal of the driving roller or in order to control or adjust
the distance between the driving roller and the supporting
driving roller.
The bearing region of the driving roller is located between the
pivotable end of the rocker and the end of the rocker connected
to the actuating device.
In the driver according to the internal prior art too, the
rockers can be pivoted about an axle arranged in an axle region
of the rockers, and said rockers are connected in an actuating
region to an actuating device. In this case, the bearing region
of the driving roller can, as in EP747147B1 or AT500689B1, be
located between the axle region and the actuating region.
According to another embodiment, the axle region can be located
between the bearing region and the actuating region. An
advantage of such an embodiment is that forces flow away into
the rocker better during the pressing of the driving roller and
more favorable stress states are generated for the rocker. The
effective distance of an actuating device which acts on one end
of the rocker can also be increased more easily in structural
terms in such a construction than in embodiments configured as
in EP747147B1 or AT500689B1. As a result of an increased
effective distance, the same forces can be achieved with
smaller actuating devices or larger forces can be achieved with
the same actuating devices.
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A further part of the internal prior art is a method for
removing a driving roller from a driver according to the
internal prior art.
This method is characterized in that it comprises the steps
- opening the securing mechanism,
- removing the driving roller to the side and/or in the
upward direction from the driver.
Opening the securing mechanism is to be understood as meaning
that the securement of the driving roller to the bearing region
is released.
The supporting driving roller in a driver is secured in the
driver by securing devices in order to ensure that during
normal operation its position does not change at all or its
position does not change beyond an acceptable degree. The
supporting driving roller can be secured here so that no
movement at all is possible. It can also be displaceable to an
acceptable or desired degree. The degree of displaceability
which is acceptable or desired depends on the respective
operating state. In order to be able to change the deflection
forces of the driver as a function of the strip thickness and
the strip quality, it is possible, for example, to change the
distance between the axle of the driving roller and that of the
supporting driving roller to a certain degree.
An embodiment of the method according to the internal prior art
is characterized in that, after removal of the driving roller,
it additionally comprises the steps
- releasing securing devices for securing the supporting
driving roller in the driver, and
- removing the supporting driving roller in the upward
direction from the driver.
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By virtue of the opening which comes about as a result of the
removal of the driving roller, the supporting driving roller
can also be removed in the upward direction from the driver.
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According to another embodiment, the supporting driving roller
can be pulled out of the driver laterally, that is to say in
the direction of its longitudinal axis, for the purpose of
removal. This can take place before or after the inventive
removal of the driving roller. This can also take place during
the removal of the driving roller from the driver; in this way,
the driving roller and the supporting driving roller can be
removed more quickly than if the two removals take place in
succession. The method according to the internal prior art then
additionally comprises, during the removal of the driving
roller, the steps
- releasing securing devices for securing the supporting
driving roller in the driver, and
- removal of the supporting driving roller by pulling it
laterally out of the driver.
According to one preferred embodiment, the driving roller and
supporting driving roller are removed from the driver in pairs
by removing a holding device in which a pair consisting of a
driving roller and a supporting driving roller is arranged.
The internal prior art is described by way of example in the
appended schematic figures.
Figure la shows a side view of an embodiment of a driver
according to the internal prior art,
figure lb shows an elevated oblique view of a driver according
to figure la,
figure 2 shows an elevated oblique view of a driver according
to figure lb having a driving roller and a supporting driving
roller arranged in a holding device,
figure 3 shows an embodiment of a driver according to the
internal prior art in which the axle region 11 is located
between the bearing region 7 and the actuating region 12,
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figure 4 shows an elevated oblique view of a driver according
to the internal prior art with the supporting driving roller
removed,
figure 5 shows an alternative to the securing mechanism for
securing the driving roller to the bearing region, and
figure 6 shows a further embodiment of a driver according to
the internal prior art in which the axle region 11 is located
between the bearing region 7 and the actuating region 12.
Figure la shows a side view of a driver 1 according to the
internal prior art for a steel strip coiler, specifically a
directional driver for a hot strip coiler. The driver 1
comprises a supporting driving roller 3 mounted on a frame 2,
and a driving roller 4 which can be adjusted with respect to
the supporting driving roller. In figure 1, the driving roller
4 and the supporting driving roller 3 are illustrated merely by
dashed lines, since in the side view they are concealed by the
frame 2 and other parts of the driver. The driving roller 4 is
mounted on a pair of rockers 5a, 5b connected to the frame. In
the side view in figure 1, only one rocker 5a can be seen; the
second rocker 5b of the pair is concealed by the rocker 5a in
this view. The pair of rockers 5a, 5b is located in the
operating position. The pair of rockers 5a, 5b can be pivoted
about an axle 6 of the frame 2. The driving roller 4 is
attached to a bearing region 7 of the rockers. The bearing
region 7 is opened for the insertion or removal of the driving
roller 4 to the side and in the upward direction when the
rockers are placed in the operating position. The bearing
region is shown with a curved, closed line. A securing
mechanism for securing the driving roller 4 to the bearing
region 7 is present, and is embodied as a displaceable bar 8.
In the illustrated position of the bar 8, the latter has not
yet been displaced into its end position in which it secures
the driving roller 4 to the bearing region 7. To present a
clear overview, part of the rocker 5 is illustrated in
sectional form so that part
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of the course of the bar 8 in the rocker 5 is shown. When the
bar 8 is moved out of the illustrated position into its end
position, as is shown in the following figure lb, on the one
hand the driving roller 4 is secured and on the other hand the
balancing pots 20a, 20b for placing the bearings of the driving
roller 4 in a play-free setting are activated.
Figure lb shows an elevated oblique view of a driver 1
according to figure la. Components which are identical to those
in figure la are provided with identical reference symbols. In
contrast to figure la, the bar 8 of the securing mechanism is
illustrated in its end position in which it secures the driving
roller to the bearing region 7 of the rockers 5a, 5b. The
driving roller 4 and the supporting driving roller 3 can be
seen more clearly than in figure la. The second rocker 5b of
the pair of rockers 5a, 5b can be seen, in contrast to
figure la.
Both in figure la and in figure lb, one end of the rockers 5a,
5b is connected in each case to an actuating device,
specifically a hydraulic cylinder 9a, 9b. By adjusting this
hydraulic cylinder 9a, 9b, the rockers 5a, 5b can be pivoted
about their axle 6, for example in order to set the distance of
the driving roller 4 from the supporting driving roller 3.
The bearing region 7 of the driving roller is located between
that end of the rockers Sa, 5b which can be pivoted about the
axle 6 and that end of the rockers 5a, 5b which is connected to
the hydraulic cylinder 9a, 9b of the actuating device.
Figure 2 shows a further elevated oblique view of a driver
according to figure lb. Components which are identical to those
in figure lb are provided with identical reference symbols. In
contrast to figure lb, the bar 8 of the securing mechanism is
illustrated in its starting position, in which it does not
secure the driving roller 4 to the bearing region 7. The
driving roller 4 and the supporting driving roller 3 are not
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installed in the driver 1. They are arranged in a holding
device, specifically a holding frame 10.
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The installation and removal of the driving roller 4 and of the
supporting driving roller 3 are carried out by inserting the
holding frame 10 into the frame 2 of the driver 1 or removing
it therefrom.
Figure 3 shows a side view, similar to figure la, of a driver
according to the internal prior art. Components which are
identical to those in figure la are provided with identical
reference symbols. To present a clearer overview, the driving
roller 4 and the supporting driving roller 3 are not
illustrated. The axle 6 is arranged in an axle region 11 of the
rocker 5a. The hydraulic cylinder 9a is arranged in an
actuating region 12 of the rocker 5a. In contrast to figure la,
the axle region 11 is located between the bearing region 7 and
the actuating region 12.
Figure 4 shows an elevated oblique view, similar to figure lb,
of a driver according to the internal prior art. Components
which are identical to those in figure lb are provided with
identical reference symbols. A driving roller has not been
inserted into the driver 1, and accordingly no driving roller
is illustrated. The supporting driving roller 3 is not inserted
either. Figure 4 shows the supporting driving roller in the
removed state. The supporting driving roller 3 can be removed
laterally in the direction of its longitudinal axis from the
driver 1 and can be introduced into the driver 1. Figure 4
shows a removal framework, on which the supporting driving
roller 3 is guided out of the driver 1 and is respectively
introduced into the driver 1.
The securing mechanism for securing the driving roller 4 to the
bearing region 7 does not have to be embodied as a displaceable
bar 8.
Figure 5 shows an alternative securing mechanism which has a
swing-action device having two arms 14, 16, which can be swung
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into one another and are locked by a displaceable wedge device
18. Each of the arms 14, 16 swings here about a different axle,
arm 14 about axle 15 and arm 16 about axle 17. The two arms 14,
16 are connected to the rocker 5a
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via the axles 15, 17. The displaceable wedge device 18 is
fastened to the arm 16; said wedge device 18 can be displaced
by means of a hydraulic cylinder 19. The arm 14 has
protuberances which fit into depressions on the displaceable
wedge device 18. When the securing mechanism closes, the arms
14, 16 swing into the illustrated position and the hydraulic
cylinder 19 moves the displaceable wedge device 18 in such a
way that the depressions slide over the protuberances. In this
way, the two arms 14, 16 are locked together.
Figure 6 shows a side view, similar to figure la and figure 3,
of a driver according to the internal prior art. Components
which are identical to those in figure la are provided with
identical reference symbols. The axle 6 is arranged in an axle
region 11 of the rocker 5a. The hydraulic cylinder 9a is
arranged in an actuating region 12 of the rocker 5a. As in
figure 3, in contrast to figure la, the axle region 11 is
located between the bearing region 7 and the actuating region
12. Figure 3 and figure 6 differ in the form of the rocker 5a
and the way in which the driving roller is attached to the
bearing region of the rocker.
As described above, according to one embodiment of the driver
according to the internal prior art the driving roller and the
supporting driving roller are arranged in a holding device. The
holding device, which may be, for example, a holding frame,
therefore contains both the driving roller and the supporting
driving roller. As a result, in order to remove or insert a
pair consisting of a driving roller and a supporting driving
roller, all that is required is to act on the holding device
and to remove it from the driver. By virtue of the fact that
the driving roller and supporting driving roller do not have to
be removed individually from or inserted individually into the
driver, the removal and insertion can be carried out more
quickly.
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In a rolling mill, the strip is, if appropriate, also subjected
in strip processing devices to strip processing steps, for
example
- cutting of the strip,
- measuring of the strip,
- cooling of the strip, and
- heating of the strip.
Although the internal prior art relating to drivers and
specifically the embodiment with an arrangement of a driving
roller and a supporting driving roller in a holding device
permits driving rollers and supporting driving rollers to be
replaced more quickly than in the prior art according to
EP747147B1 or AT500689B1, if strip processing devices of a
rolling mill require components to be replaced, the steps
necessary to do so are time-consuming and limit the
availability and performance of the rolling mill.
Summary of the invention
Technical object
The object of the present invention is to permit components of
strip processing devices of a rolling mill to be replaced more
quickly compared to the prior art by making available a strip
processing device and a method for operating the strip
processing device.
Technical solution
This object is achieved by means of a strip processing device
for a rolling mill,
preferably a hot strip rolling mill,
which is characterized in that said strip processing device
comprises
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a strip processing cassette mounted on a frame, wherein the
strip processing cassette is attached to a bearing region,
wherein the bearing region is open for the insertion or removal
of the strip processing cassette to the side and/or in the
upward direction from the frame, and the strip processing
device has a securing mechanism for securing the strip
processing cassette at the bearing region.
The strip processing cassette contains at least one device for
processing strips. The strip is processed by interaction
between the strip processing cassette and the strip. The
remaining parts of the strip processing device serve to support
and secure the strip processing cassette.
The bearing region, at which the strip processing cassette is
mounted, is open for the insertion or for the removal of the
strip processing cassette to the side and/or in the upward
direction from the frame.
A securing mechanism serves to secure the strip processing
cassette to the bearing region.
Advantageous effects of the invention
Since the strip processing cassette contains the devices which
are necessary for the desired type of strip processing, worn
devices for processing the strips can be renewed or various
types of devices for processing strips can be replaced quickly
and easily by removing a strip processing cassette and
inserting another strip processing cassette into the frame.
Specifically, only the strip processing cassette, that is to
say one component, has to be removed from the frame or inserted
into the frame instead of individual components of the strip
processing device contained in the strip processing cassette
having to be removed individually from the frame or inserted
into it.
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The strip processing cassette preferably comprises at least a
device from the group comprising the elements
- device for stamping the strip,
- device for roughening the strip,
- device for smoothing the strip,
- device for cutting the strip,
- device for slitting the strip,
- device for trimming the strip,
- device for coating the strip,
- device for doubling the strip,
- device for testing material properties of the strip,
- device for measuring the strip,
- device for marking the strip,
- device for shaping the strip,
- device for welding the strip to another strip,
- device for cooling the strip,
- device for heating the strip,
- device for punching the strip, and
- device for taking a sample of the strip.
According to one preferred embodiment of the strip processing
device according to the invention, the strip processing
cassette comprises a device for driving the strip, which is
also
a device
from the group comprising the elements
- device for stamping the strip,
- device for roughening the strip,
- device for smoothing the strip,
- device for cutting the strip,
- device for slitting the strip,
- device for trimming the strip,
- device for coating the strip,
- device for doubling the strip,
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- device for testing material properties of the strip,
- device for measuring the strip,
- device for marking the strip,
- device for shaping the strip,
- device for welding the strip to another strip,
- device for cooling the strip,
- device for heating the strip,
- device for punching the strip, and
- device for taking a sample of the strip.
In this way, the strip processing cassette also serves as a
driver. The internal prior art presented above relating to
drivers, specifically the embodiment of the driver according to
the internal prior art, in which the driving roller and the
supporting driving roller are arranged in a holding device, can
be correspondingly used.
According to one preferred embodiment of the strip processing
device according to the invention, the strip processing
cassette comprises a device for driving the strip, and said
strip processing cassette also comprises
a device
from the group comprising the elements
- device for stamping the strip,
- device for roughening the strip,
- device for smoothing the strip,
- device for cutting the strip,
- device for slitting the strip,
- device for trimming the strip,
- device for coating the strip,
- device for doubling the strip,
- device for testing material properties of the strip,
- device for measuring the strip,
- device for marking the strip,
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- device for shaping the strip,
- device for welding the strip to another strip,
- device for cooling the strip,
- device for heating the strip,
- device for punching the strip, and
- device for taking a sample of the strip.
In this way, the strip processing device also serves as a
driver. The internal prior art presented above relating to
drivers, specifically the embodiment of the driver according to
the internal prior art in which the driving roller and the
supporting driving roller are arranged in a holding device, can
be correspondingly used.
Wherever a device for testing material properties of the strip
is mentioned, these material properties also include properties
of the surface of the strip.
According to one preferred embodiment of the strip processing
device according to the invention
the strip processing cassette is mounted on a rocker connected
to the frame,
wherein the strip processing cassette is attached to a bearing
region of the rocker,
wherein the bearing region is open for the insertion or the
removal of the strip processing cassette to the side and/or in
the upward direction when the rocker is positioned in the
operating position.
According to a further preferred embodiment of the strip
processing device according to the invention, the strip
processing cassette is mounted between a pair of rockers
connected to the frame, wherein the strip processing cassette
is attached to a bearing region of the rockers,
wherein the bearing region is open for the insertion or the
removal of the strip processing cassette to the
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side and/or in the upward direction when the rockers are
positioned in the operating position.
According to one preferred embodiment, in this context at least
one of the rockers can be displaced or pivoted relative to the
other rocker.
These embodiments are of similar design to the internal prior
art relating to drivers discussed above.
Accordingly, a frame of such a driver can be used as part of a
strip processing device according to the invention by inserting
a strip processing cassette.
This increases flexibility - with respect to reaction to
changed demands made of the product - of rolling mills
containing drivers corresponding to this internal prior art.
A further subject matter of the present application is a
rolling mill, preferably hot strip rolling mill, comprising one
or more strip processing devices according to the invention.
A further subject matter of the present application is a method
for removing a strip processing cassette from a strip
processing device according to the invention, characterized in
that it comprises the steps
- opening of the securing mechanism, and
- removal of the strip processing cassette to the side
and/or in the upward direction from the strip processing
device.
Brief description of the drawings
Figure la shows a side view of an embodiment of a driver
according to the internal prior art.
Figure lb shows an elevated oblique view of a driver according
to figure la.
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Figure 2 shows an elevated oblique view of a driver according
to figure lb with a driving roller and a supporting driving
roller arranged in a holding device.
Figure 3 shows an embodiment of a driver according to the
internal prior art, in which embodiment the axle region 11 is
located between the bearing region 7 and the actuating region
12.
Figure 4 shows an elevated oblique view of a driver according
to the internal prior art with the supporting driving roller
removed.
Figure 5 shows an alternative to the securing mechanism for
securing the driving roller to the bearing region.
Figure 6 shows a further embodiment of a driver according to
the internal prior art, in which embodiment the axle region 11
is located between the bearing region 7 and the actuating
region 12.
Figure 7 shows, in an illustration similar to figure 2, a strip
processing device according to the invention.
Description of the embodiments
Figure 7 illustrates how a strip processing cassette is
inserted into the strip processing device. Parts corresponding
to figure 2 are provided with identical reference symbols.
The strip processing device 22 comprises a strip processing
cassette 21 mounted on a frame 2. In the case illustrated, the
strip processing cassette comprises a holding frame 23 in which
a processing unit 24 is inserted. In the state in which it is
inserted into the frame, the strip processing cassette 21 is
mounted on a pair of rockers 5a, 5b connected to the frame. The
pair of rockers 5a, 5b are in the operating position. The pair
of rockers 5a, 5b can pivot about an axle 6 of the frame 2. The
strip processing cassette 21 is attached to a bearing region 7
of the rockers. The bearing region 7 is open for the insertion
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or removal of the strip processing cassette 21 in the upward
direction when the rockers are placed
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in the operating position. The bearing region is shown with a
wavy closed line. A securing mechanism for securing the strip
processing cassette 21 to the bearing region 7 is present, it
is embodied as a displaceable bar 8. The bar 8 of the securing
mechanism is illustrated in its starting position in which it
does not secure the strip processing cassette 21 to the bearing
region 7. If the bar 8 is moved out of the illustrated position
into its end position, on the one hand the strip processing
cassette 21 is secured and on the other hand the balancing pots
20a, 20b for placing the bearings of the strip processing
cassette 21 in a play-free setting are activated.
One end of the rockers 5a, 5b is respectively connected to an
actuating device, specifically a hydraulic cylinder 9a, 9b. By
adjusting this hydraulic cylinder 9a, 9b, the rockers 5a, 5b
can be pivoted about their axle 6.
The bearing region 7 of the strip processing cassette 21 is
located between the end which can be pivoted about the axle 6
and the end of the rockers 5a, 5b which is connected to the
hydraulic cylinder 9a, 9b of the actuating device.
The installation and removal of the strip processing cassette
21 in the strip processing device 22 are carried out by
introducing the strip processing cassette 21 into the frame 2
of the strip processing device 22 and removing it therefrom.
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List of reference numbers
1 Driver
2 Frame
3 Supporting driving roller
4 Driving roller
5a,5b Rocker
6 Axle
7 Bearing region
8 Bar
9a,9b Hydraulic cylinder
Holding frame
11 Axle region
12 Actuating region
13 Removal frame
14 Arm
Axle
16 Arm
17 Axle
18 Displaceable wedge device
19 Hydraulic cylinder
20a, 20b Balancing pots
21 Strip processing cassette
22 Strip processing device
23 Holding frame
24 Processing unit
