U.S. patent application number 14/402735 was filed with the patent office on 2015-06-04 for side guide for a rolling train.
The applicant listed for this patent is SIEMENS AKTIENGESELLSCHAFT. Invention is credited to Ansgar Gruess, Matthias Kurz, Birger Schmidt.
Application Number | 20150151342 14/402735 |
Document ID | / |
Family ID | 48325624 |
Filed Date | 2015-06-04 |
United States Patent
Application |
20150151342 |
Kind Code |
A1 |
Gruess; Ansgar ; et
al. |
June 4, 2015 |
SIDE GUIDE FOR A ROLLING TRAIN
Abstract
A side guide for a rolling train has a band element and a
transverse force device attached to the band element. The band
element is designed for the at least partial lateral delimitation
of a transporting path of the rolling train along a longitudinal
axis of the band element. The transverse force device has a force
generating unit for generating a transverse force orthogonal to the
longitudinal axis of the band element and a force transmitting
unit, coupled to the force generating unit, for transmitting the
transverse force to a rolled product led through the rolling
train.
Inventors: |
Gruess; Ansgar; (Erlangen,
DE) ; Kurz; Matthias; (Erlangen, DE) ;
Schmidt; Birger; (Brand-Erbisdorf, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SIEMENS AKTIENGESELLSCHAFT |
Munich |
|
DE |
|
|
Family ID: |
48325624 |
Appl. No.: |
14/402735 |
Filed: |
April 24, 2013 |
PCT Filed: |
April 24, 2013 |
PCT NO: |
PCT/EP2013/058494 |
371 Date: |
November 21, 2014 |
Current U.S.
Class: |
72/251 |
Current CPC
Class: |
B21B 1/28 20130101; B21B
39/165 20130101; B21B 41/00 20130101; B21B 39/02 20130101; B21B
31/02 20130101 |
International
Class: |
B21B 41/00 20060101
B21B041/00; B21B 31/02 20060101 B21B031/02; B21B 39/02 20060101
B21B039/02; B21B 1/28 20060101 B21B001/28 |
Foreign Application Data
Date |
Code |
Application Number |
May 21, 2012 |
EP |
12168684.4 |
Claims
1-13. (canceled)
14. A side guide for a rolling train that rolls a thickness of a
rolled product as the rolled product is guided through the rolling
train along a transporting path, the rolled product having a width
direction perpendicular to a thickness direction, the side guide
comprising: a band element having a longitudinal axis extending
parallel to the transporting path, for at least partial lateral
delimitation of the transporting path, so as to limit movement in
the width direction, perpendicular to the longitudinal axis of the
band element; and a transverse force device attached to the band
element, the transverse force device comprising: a force generating
unit to generate a transverse force parallel to the width direction
and orthogonal to the longitudinal axis of the band element; and a
force transmitting unit coupled to the force generating unit to
transmit the transverse force to the rolled product guided through
the rolling train.
15. The side guide as claimed in claim 14, wherein the force
transmitting unit is a roller with a roller longitudinal axis
orthogonal to the longitudinal axis of the band element, to the
width direction and to a direction of the transverse force.
16. The side guide as claimed in claim 15, wherein the roller is
mounted so as to rotate about the roller longitudinal axis.
17. The side guide as claimed in claim 14, wherein the force
generating unit is a hydraulic cylinder acting on the force
transmitting unit.
18. The side guide as claimed in claim 14, wherein the force
generating unit is a pneumatic cylinder acting on the force
transmitting unit.
19. The side guide as claimed in claim 14, wherein the force
generating unit is a mechanically-electrically driven screw acting
on the force transmitting unit.
20. The side guide as claimed in claim 14, further comprising: a
drive device to displace the band element parallel to the
transverse force and the width direction.
21. The side guide as claimed in claim 20, further comprising: a
braking device to limit displacement of the band element parallel
to the transverse force and the width direction.
22. A rolling train comprising: a transporting path for guiding a
rolled product; at least one roll stand that rolls a thickness of
the rolled product as the rolled product is guided along the
transporting path, the rolled product extending between opposing
sides in a width direction perpendicular to a thickness direction;
and at least one side guide disposed laterally on the transporting
path, each side guide comprising: a band element having a
longitudinal axis extending parallel to the transporting path, for
at least partial lateral delimitation of the transporting path, so
as to limit movement in the width direction, perpendicular to the
longitudinal axis of the band element; and a transverse force
device attached to the band element to exert a transverse force on
the rolled product, the transverse force device comprising: a force
generating unit to generate a transverse force parallel to the
width direction and orthogonal to the longitudinal axis of the band
element; and a force transmitting unit coupled to the force
generating unit to transmit the transverse force to the rolled
product guided through the rolling train.
23. The rolling train as claimed in claim 22, wherein the
transverse force device is disposed on an end section of the side
guide directed to an adjacent roll stand.
24. The rolling train as claimed in claim 22, wherein the rolled
product extends between first and second opposing sides in the
width direction, for each roll stand, there are at least first and
second pairs of band elements, each pair of band elements
comprising a first band element and a second band element disposed
respectively on the first and second opposing sides of the rolled
product when the rolled product is being rolled, and the first and
second pairs of band elements are disposed along the transporting
path, on different sides of the roll stand.
25. The rolling train as claimed in claim 22, wherein each roll
stand has a compressive device to reduce a width of the rolled
product, the side guide being disposed on a side of the roll stand
opposite the compressive device along the transporting path.
26. The rolling train as claimed in claim 22, wherein the rolling
train comprises a plurality of side guides, with all side guides
being disposed on the same side of the transporting path.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is based on and hereby claims priority to
International Application No. PCT/EP2013/058494 filed on Apr. 24,
2013 and European Application No. 12168684.4 filed on May 21, 2012,
the contents of which are hereby incorporated by reference.
BACKGROUND
[0002] The invention relates to a side guide for a rolling train
and a rolling train having at least one side guide.
[0003] In rolling mills rolled products, for example slabs, are
rolled in so-called rolling trains, to form bands of material or
sheets of a particular thickness. To this end rolling trains have
roll stands, in which the rolled products are guided through roll
gaps between rollers. Rolling trains frequently additionally have
side guides for the lateral guidance of the rolled products along
the rolling trains.
[0004] DE 3116278 A1 discloses a device for controlling the
position of a band run during rolling, wherein rigid side guides
and bending beams attached thereto are provided next to the band.
Arranged at one end of each bending beam is a roller for creating a
band edge, which interacts with sensors referencing the position of
the band edge, said sensors controlling organs which optionally
influence one of the two sides of the band and alter the lateral
position of the band.
[0005] JP 59229209 A discloses a method for rolling a rolled
product, in which a rolling oil is sprayed onto a surface of a
roller which is in contact with an edge region of the rolled
product.
SUMMARY
[0006] One possible object is to specify an improved side guide for
a rolling train and an improved rolling train, in particular for
processing asymmetrical rolled products.
[0007] The inventors propose a side guide for a rolling train,
which comprises a band element and a transverse force device
attached to the band element. The band element is designed for the
at least partial lateral delimitation of a transporting path of the
rolling train along a longitudinal axis of the band element. The
transverse force device has a force generating unit for generating
a transverse force orthogonal to the longitudinal axis of the band
element and a force transmitting unit coupled to the force
generating unit for transmitting the transverse force to a rolled
product guided through the rolling train.
[0008] A side guide of this type enables a transverse force to be
exerted on a rolled product at a defined location by the transverse
force device. This means a torque exerted on the rolled product by
the transverse force and a resulting load spread can be influenced
and adjusted very precisely in a roll gap of a roll stand. In
particular this enables, by the side guide or its transverse force
device, a rolled product which is asymmetrical in respect of its
thickness and/or width to be processed, so that the asymmetry is
eliminated or reduced, as is explained in greater detail below on
the basis of an exemplary embodiment. The proposed side guide thus
permits targeted generation and transmission of a transverse force
to a rolled product, in particular for reducing an asymmetry of the
rolled product.
[0009] Compressive devices for reducing the width of rolled
products and whole (heavy) side guides are known from the related
art for applying a transverse forced to a rolled product. However,
because of their dimensions, compressive devices are relatively far
away from the roll gaps of roll stands, so that no transverse
forces can be exerted by compressive devices on relatively large
portions of rolled products. A transverse force device of the side
guide can be placed nearer to a roll gap of a roll stand than a
compressive device and hence can exert a transverse force that acts
on a larger portion of a rolled product than a compressive device.
The generation of a transverse force by an entire side guide has
the disadvantage that the transverse force in this case is
transmitted only over a large area and not at a defined pointed, so
that in contrast to the proposed force transmission by a transverse
force device of a side guide the torque exerted by the transverse
force and the load spread generated are not precisely known.
[0010] In a preferred embodiment the force transmitting unit is a
roller with a longitudinal axis orthogonal to the longitudinal axis
of the band element and to the direction of the transverse force.
The roller is further preferably mounted so as to rotate about its
longitudinal axis.
[0011] This type of roller is particularly suitable as a force
transmitting unit, since it is a particularly simple, low-cost and
efficient way to transmit a transverse force to a rolled
product.
[0012] The force generating unit is preferably a hydraulic or
pneumatic cylinder acting on the force transmitting unit or a
mechanically-electrically driven screw acting on the force
transmitting unit.
[0013] All these force generating units advantageously enable a
transverse force to be controlled and precisely generated, and to
be transmitted to a force transmitting unit.
[0014] In a further preferred embodiment the side guide has a drive
device for displacing the band element parallel to the transverse
force.
[0015] This means the transverse force device can be moved up to
the rolled product, in that large movements of the transverse force
device are effected by displacement of the band element and the
force transmitting unit only needs to be moved by the force
generating unit a relatively short distance to the rolled product.
This enables the dimensions of the transverse force device to be
kept relatively small. This firstly has the advantage that the
transverse force device can be disposed relatively near to the roll
gap of a roll stand. Secondly it advantageously reduces material,
effort and costs for manufacturing the transverse force device.
[0016] Furthermore, the side guide preferably has a braking device,
by which it is possible to block a displacement of the band element
parallel to the transverse force.
[0017] This advantageously enables the position of the band element
to be fixed during the transmission of the transverse force to the
rolled product, as a result of which advantageously the
transmission of the transverse force generated by the transverse
force device to the rolled product is improved.
[0018] The inventors also propose a rolling train, which comprises
a transporting path for transporting a rolled product, at least one
roll stand and at least one proposed side guide. In this case each
such side guide is disposed laterally to the transporting path, so
that the band element of the side guide delimits the transporting
path at least in part laterally along a longitudinal axis of the
band element and the transverse force device exerts a transverse
force on the rolled product.
[0019] A rolling train such as this enables a rolled product to be
processed by the proposed side guide with the advantages already
mentioned above.
[0020] Each transverse force device of a side guide is in this case
preferably disposed at an end section of the respective side guide,
which end section faces an adjacent roll stand.
[0021] This means the distances between the transverse force
devices and the roll gaps of the roll stands are advantageously
reduced, so that the transverse forces generated by the transverse
force devices can act on the largest possible regions of a rolled
product.
[0022] In one embodiment a rolling train has at least two pairs of
side guides, wherein both the side guides of each pair are disposed
on different sides of the transporting path and both the pairs are
disposed on different sides of a roll stand.
[0023] An arrangement such as this enables transverse forces to be
exerted on a rolled product both upstream and downstream of a roll
stand and on each side of the rolling train, and thus enable the
transverse forces to be generated particularly flexibly.
[0024] In another embodiment the rolling train has a compressive
device for reducing a width of the rolled product and each side
guide is disposed on a side of a roll stand facing away from the
compressive device.
[0025] This embodiment takes into account that in the case of
rolling trains having compressive devices an arrangement of the
proposed side guide between a compressive device and a roll stand
is not expedient, since as a result the effect of the compressive
device and/or of the side guide is lessened.
[0026] Another embodiment provides for all side guides to be
disposed on the same side of the transporting path.
[0027] This embodiment is advantageous if the rolled products can
be presorted before entry into the rolling train such that a
transverse force is necessary only on one side of the rolling
train. This means that in particular the number of transverse force
devices required can be reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
[0028] These and other objects and advantages of the present
invention will become more apparent and more readily appreciated
from the following description of the preferred embodiments, taken
in conjunction with the accompanying drawings of which:
[0029] FIG. 1 schematically shows a plan view of a section of a
rolling train, through which a rolled product is guided, and
[0030] FIG. 2 shows a cross-section of a rolled product.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0031] Reference will now be made in detail to the preferred
embodiments of the present invention, examples of which are
illustrated in the accompanying drawings, wherein like reference
numerals refer to like elements throughout.
[0032] Parts corresponding to one another are provided with the
same reference characters in the figures.
[0033] FIG. 1 schematically shows in a plan view a section of a
rolling train 1 having a roll stand 2, a compressive device 3 and
side guides 4, 5, 6, 7. Also depicted is a rolled product 8, which
is guided, in a rolling direction indicated by an arrow, by way of
a transporting path of the rolling train 1 through the rolling
train 1 and is thereby rolled. The rolling direction defines an
X-direction of a Cartesian coordinates system with Cartesian
coordinates X, Y, Z. The Y-direction of this coordinates system
runs in the drawing plane of FIG. 1 orthogonally to the
X-direction; the Z-direction is perpendicular to this drawing
plane.
[0034] The compressive device 3 comprises two edging rollers 3.1,
which are disposed opposite one another on different sides of the
transporting path, each having a longitudinal axis running in the
Z-direction and being mounted so as to rotate about this
longitudinal axis. At least one of the edging rollers 3.1 can be
displaced in the Y-direction, so that its external surface can be
moved up to the rolled product 8. Thanks to the compressive device
3 a width of the rolled product 8, i.e. an extension of the rolled
product 8 in the Y-direction, can be reduced. In addition the
rolled product 8 can be oriented and guided in the Y-direction by
the compressive device 3.
[0035] The roll stand 2 comprises at least two rollers 2.1 disposed
above one another, each of which has a longitudinal axis running in
the Y-direction and is mounted so as to rotate about this
longitudinal axis. The rollers 2.1 are spaced apart from one
another by a displaceable roll gap, through which the rolled
product 8 is guided to reduce its thickness, wherein the thickness
of the rolled product 8 is its extension in the Z-direction. The
roll stand 2 is located downstream of the compressive device 3,
wherein the position indicators "upstream" and "downstream" here
and in what follows relate to the arrangement along the rolling
direction.
[0036] The side guides 4, 5, 6, 7 each have a band element 4.1,
5.1, 6.1, 7.1 for the partial lateral delimitation of the
transporting path along a longitudinal axis, running in the
X-direction, of the respective band element 4.1, 5.1, 6.1, 7.1. A
first side guide 4 and a second side guide 5 are disposed upstream
of the compressive device 3 opposite one another on different sides
of the transporting path. A third side guide 6 and a fourth side
guide 7 are disposed downstream of the roll stand 2 opposite one
another on different sides of the transporting path.
[0037] The fourth side guide 7 has, attached to its band element
7.1, a transverse force device 9 having a force generating unit 9.1
and a force transmitting unit 9.2. The force generating unit 9.1 is
designed as a hydraulic cylinder. The force transmitting unit 9.2
is designed as a roller with a longitudinal axis running in the
Z-direction, about which the roller is rotatably mounted. By the
hydraulic cylinder a transverse force can be exerted on the roller,
which acts parallel to the Y-direction and by which the roller can
be pressed laterally onto the rolled product 8, so that the roller
transmits the transverse force onto the rolled product 8. Thanks to
the transverse force asymmetries of the rolled product 8 can in
particular be corrected, as is further explained below.
[0038] The fourth side guide 7 further has a drive device (not
shown) for displacing its band element 7.1 parallel to the
transverse force. This means the transverse force device 9 can be
moved up to the rolled product 8, in that large movements of the
transverse force device 9 are effected by displacing the band
element 7.1 and the roller need only be moved a relatively short
distance by the hydraulic cylinder to the rolled product 8, so that
advantageously a hydraulic cylinder having a relatively small
stroke can be used.
[0039] Furthermore, the fourth side guide 7 has a braking device
(likewise not shown), by which a displacement of its band element
7.1 is blocked. This advantageously improves the force transmission
of the transverse force generated by the transverse force device 9
to the rolled product 8.
[0040] The transverse force device 9 is attached to an end section,
facing the roll stand 2, of the fourth side guide 7 at a defined
distance just downstream of the roll gap of the roll stand 2. This
means the transverse force generated by the transverse force device
9 can advantageously be applied very precisely and to large regions
of the rolled product 8, since only sections of the rolled product
8 at its beginning and end, the extensions of which correspond in
the X-direction to the distance between the roll gap and the
transverse force device 9, cannot be influenced by the transverse
force. In particular, the transverse force device 9 can, because of
its small size, be disposed nearer to the roll gap of the roll
stand 2 than the compressive device 3.
[0041] FIG. 2 shows a cross-section of an asymmetrical rolled
product 8 before it is processed in the rolling train 1. The
thickness of the rolled product 8 decreases in the Y-direction, so
that the cross-section is wedge-shaped. A rolled product 8 such as
this can advantageously be processed in the rolling train 1
depicted in FIG. 1.
[0042] To this end the rolled product 8 is entered into the rolling
train 1 such that its thinner side is oriented to the side of the
rolling train 1 to which the fourth side guide 7 with the
transverse force device 9 is attached. If the rollers 2.1 are not
pivoted against one another in the X-direction, then as a result of
the inhomogeneous thickness of the rolled product 8 thicker regions
of the rolled product 8 experience a greater elongation in the roll
stand 2 than originally thinner regions. In consequence, without
the use of a transverse force downstream of the roll stand 2 the
rolled product 8 would buckle downward on the side of the rolling
train 1 on which the fourth side guide 7 is disposed. This buckling
can be prevented or at least reduced by the transmission of a
transverse force onto the rolled product 8 by the transverse force
device 9. In particular the transverse force device 9 enables a
force to act on the rolled product 8 at a defined location of the
rolling train 1 and thus a very precise adjustment of the torque
exerted by the transverse force on the rolled product 8 and the
resulting load spread in the roll gap of the roll stand 2.
[0043] In order to process several asymmetrical rolled products 8
in a rolling train 1 depicted in FIG. 1, the rolled products 8 are
pre-sorted before entering the rolling train 1, so that in each
case their thinner sides are oriented toward the same side of the
rolling train 1 on which the fourth side guide 7 with the
transverse force device 9 is disposed.
[0044] The exemplary embodiment described above can be modified
such that the force generating unit 9.1 is designed as a pneumatic
cylinder or a mechanically-electrically driven screw. Furthermore,
several or all side guides 4, 5, 6, 7 can each be fitted with a
transverse force device 9, in particular if a rolling train 1 does
not include a compressive device 3.
[0045] The invention has been described in detail with particular
reference to preferred embodiments thereof and examples, but it
will be understood that variations and modifications can be
effected within the spirit and scope of the invention covered by
the claims which may include the phrase "at least one of A, B and
C" as an alternative expression that means one or more of A, B and
C may be used, contrary to the holding in Superguide v. DIRECTV, 69
USPQ2d 1865 (Fed. Cir. 2004).
* * * * *