This application is the US national stage of PCT application PCT/EP2009/000874, filed 9 Feb. 2009, published 27 Aug. 2009 as WO2009/103436, and claiming the priority of German patent application 102008009902.3 itself filed 19 Feb. 2008, whose entire disclosures are herewith incorporated by reference.
The invention relates to a roll stand, in particular a pusher-type roll stand for flat rolling and having a frame and two sets each having two or more rolls mounted in the frame of the roll stand so that a workpiece can be fed between two rolls of the two sets for rolling.
Roll stands are well known in the prior art. A roll stand for flat rolling usually symmetrically deforms the workpiece between working rolls. To this end the roll diameter, the peripheral speed, and the frictional conditions of both working rolls are made as equal as possible such that only the slightest variations are present. Such roll stands have become known, for example, from DE 33 23 641 [U.S. Pat. No. 4,631,948].
Furthermore, there are roll stands where the peripheral speeds of the two working rolls are different. Such roll stands have become known, for example, from DE 28 33 990 [U.S. Pat. No. 4,385,511]. In so-called push rolls or asymmetrical rolls the processing conditions are chosen to be not equal, but selectively unequal for both working rolls. Although this has the advantage that roll force is reduced due to shear, this also has disadvantages. The disadvantages include the so-called ski effect, that is uneven metal properties across the thickness of the sheet metal, and an uneven loading of the drive trains of the rolls, and thus of their motors.
This also results in the fact that push rolls are normally not used in the production of sheet metal at all, because the disadvantages outweigh the advantages.
The object of the invention is therefore to create a roll stand by means of which the disadvantages of prior art may be reduced, if not even avoided altogether.
According to the invention the object is attained by a roll stand having a frame and two sets each having two or more rolls mounted in the frame of the roll stand so that a workpiece can be fed between two rolls of the two sets for rolling, and wherein the rolls of at least one of the roll sets are displaceable in a rolling direction relative to the frame, adjustment means being provided on each side between the roll mounts of the one set and the frame.
It is also advantageous if the adjusters are mounted on each side of each of the two rolls.
It is also preferable if the adjusters are mounted essentially horizontally level with the respective roll and/or of the respective roll axis in the direction as viewed perpendicular to the rolling direction.
It is further advantageous, if the displaceable roll set has a common roll mount for its two rolls, the adjusters engaging the roll mount essentially horizontally level with the respective roll in the direction as viewed perpendicular to the rolling direction.
Accordingly, it is advantageous if the upper roll set and/or the lower roll set is displaceable.
According to one aspect according to the invention it is advantageous if at least one roll, such as the working rolls, of the upper roll set and of the lower roll sets have a different diameter.
It is further advantageous if the adjusters have is hydraulic and/or mechanical actuators.
It is also advantageous if the roll axes of the rolls of the roll sets are parallel to each other.
To this end it may also be advantageous if the rolls, such as in particular the working rolls, of both roll sets can be operated at different rotational or peripheral speeds.
Advantageous further improvements are described in the dependent claims.
The invention is described in further detail below with reference to an illustrated embodiment based on the drawings. Therein:
In a further illustrated embodiment the lower rolls may be displaceable and adjustable in the rolling direction, instead of the upper rolls. In another illustrated embodiment the lower rolls may also be displaceable and adjustable in the rolling direction in addition to the upper rolls.
Due to the adjustability of the roll sets the roll stand may be operated such that the roll sets are not displaced relative to each other in the rolling direction, and also such that the roll sets are displaced relative to each other.
It is of particular advantage in a roll stand according to the invention, such as the device according to
Number | Date | Country | Kind |
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10 2008 009 902 | Feb 2008 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP2009/000874 | 2/9/2009 | WO | 00 | 11/16/2009 |
Publishing Document | Publishing Date | Country | Kind |
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WO2009/103436 | 8/27/2009 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
1614424 | Coe | Jan 1927 | A |
1636057 | Jones | Jul 1927 | A |
1739156 | Lindquist | Dec 1929 | A |
1779195 | Steckel | Oct 1930 | A |
1860931 | Keller | May 1932 | A |
1864299 | Fawell | Jun 1932 | A |
1892933 | Coryell | Jan 1933 | A |
1900344 | Iversen | Mar 1933 | A |
RE18992 | Iversen | Nov 1933 | E |
2025002 | McIlvried | Dec 1935 | A |
2139872 | Worthington | May 1937 | A |
2157455 | Kimmel | May 1939 | A |
2271459 | McConnell | Jan 1942 | A |
2287851 | Zeitlin | Jun 1942 | A |
2767602 | Henrickson | Oct 1956 | A |
2792730 | Cozzo | May 1957 | A |
2922325 | Forster | Jan 1960 | A |
3077800 | Taylor | Feb 1963 | A |
3164044 | Trapp | Jan 1965 | A |
3171304 | Sims et al. | Mar 1965 | A |
3233445 | Norlindh | Feb 1966 | A |
3242711 | Fox | Mar 1966 | A |
3247697 | Cozzo | Apr 1966 | A |
3307386 | Ward et al. | Mar 1967 | A |
3310971 | Tanaka et al. | Mar 1967 | A |
3431762 | O'Brien | Mar 1969 | A |
3501936 | Stubbs | Mar 1970 | A |
3546914 | Leifeld et al. | Dec 1970 | A |
3665743 | Frohling | May 1972 | A |
3693393 | Nellen et al. | Sep 1972 | A |
3740982 | Hacker et al. | Jun 1973 | A |
3811307 | Vydrin et al. | May 1974 | A |
4237714 | Polukhin et al. | Dec 1980 | A |
4385511 | Vydrin | May 1983 | A |
4402207 | Buder | Sep 1983 | A |
4453393 | Hino et al. | Jun 1984 | A |
4548064 | Bohnenkamp | Oct 1985 | A |
4580428 | Brettbacher et al. | Apr 1986 | A |
4599883 | Ginzburg et al. | Jul 1986 | A |
4631948 | Bald et al. | Dec 1986 | A |
4736609 | Schiller et al. | Apr 1988 | A |
4805492 | Tsuruda | Feb 1989 | A |
4918965 | Kobayashi et al. | Apr 1990 | A |
4976128 | Tajima | Dec 1990 | A |
5038591 | Tajima et al. | Aug 1991 | A |
5291770 | Koujin et al. | Mar 1994 | A |
5560237 | Yasuda et al. | Oct 1996 | A |
5765424 | Mantovan | Jun 1998 | A |
5809821 | Figge | Sep 1998 | A |
5924319 | Ginzburg | Jul 1999 | A |
6085567 | Cattaneo et al. | Jul 2000 | A |
6151943 | Nihei et al. | Nov 2000 | A |
6250126 | Yasuda et al. | Jun 2001 | B1 |
6266988 | Kimura et al. | Jul 2001 | B1 |
6354128 | Donini et al. | Mar 2002 | B1 |
6510721 | Yamamoto et al. | Jan 2003 | B1 |
6820453 | Takahashi et al. | Nov 2004 | B2 |
6895794 | Yamamoto et al. | May 2005 | B2 |
6959571 | Yamamoto et al. | Nov 2005 | B2 |
7188496 | Karam et al. | Mar 2007 | B2 |
7225657 | Slawinski | Jun 2007 | B2 |
7251978 | Seidel et al. | Aug 2007 | B2 |
7491276 | Wehage et al. | Feb 2009 | B2 |
7757531 | Klockner et al. | Jul 2010 | B2 |
7895871 | Zieser et al. | Mar 2011 | B2 |
20020078729 | Bunten | Jun 2002 | A1 |
20030019271 | Yamamoto et al. | Jan 2003 | A1 |
20030024293 | Yamamoto et al. | Feb 2003 | A1 |
20030101787 | Takahashi et al. | Jun 2003 | A1 |
20040040358 | Seidel et al. | Mar 2004 | A1 |
20040187538 | Denker | Sep 2004 | A1 |
20050247095 | Slawinski | Nov 2005 | A1 |
20060254335 | Turley | Nov 2006 | A1 |
20070051153 | Breuer et al. | Mar 2007 | A1 |
20070245794 | Brandenfels et al. | Oct 2007 | A1 |
20080115551 | Marc et al. | May 2008 | A1 |
20080250836 | Gouttebroze et al. | Oct 2008 | A1 |
20080271508 | Kruger et al. | Nov 2008 | A1 |
20090183544 | Pawelski et al. | Jul 2009 | A1 |
20100252223 | Franz et al. | Oct 2010 | A1 |
20100288007 | Ogawa et al. | Nov 2010 | A1 |
20100300170 | Bentoski et al. | Dec 2010 | A1 |
20110000271 | Ogawa et al. | Jan 2011 | A1 |
20110005290 | Norikura | Jan 2011 | A1 |
20110132055 | Diehl et al. | Jun 2011 | A1 |
20110239723 | Diehl et al. | Oct 2011 | A1 |
Number | Date | Country |
---|---|---|
6269818 | Sep 1994 | JP |
2004314174 | Nov 2004 | JP |
Entry |
---|
CVC 4-HS-Kaltwalzanlage ARBED fuer hochwertiges Stahlband, SMS, Germany. |
Number | Date | Country | |
---|---|---|---|
20110154877 A1 | Jun 2011 | US |