US 4,543,810 AGranted

Six-high rolling stand

AssigneeSMS Schloemann-Siemag Aktiengesellschaft

InventorsErich Stoy, Hans Rommen

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Abstract

A roll stand has a frame in which upper and lower working rolls are journaled for rotation about respective parallel upper and lower working-roll axes and defining a workpiece nip. Respective upper and lower backup-roll guide elements vertically flank the working rolls and are each at least partially vertically displaceable relative to the frame. Respective upper and lower backup-roll journal blocks are axially displaceable but vertically fixed relative to the guide elements and define parallel upper and lower inner axes flanking the working axes. Respective inner backup rolls are journaled in the blocks for rotation about the inner axes and bear radially toward the nip on the working rolls. The inner backup rolls are therefore axially displaceable in the guide elements. A pair of outer backup rolls are journaled in the frame for rotation about outer axes coplanar with the respective inner axes and bear radially toward the nip on the inner backup rolls. Respective vertically effective actuators exert a force at least generally parallel to the planes between each journal block and the frame to bend the inner backup rolls and for displacing the force axially relative to the journal blocks.

Claims5

Dependent claims

In a six-high roll stand of the kind having a frame, two working rolls (2, 3), two intermediate rolls (4, 5) and two outer back-up rolls (6, 7), wherein at least the outer back-up rolls (6, 7) and the intermediate rolls (4, 5) are located one above the other essentially in the same vertical plane, wherein the intermediate rolls (4, 5) are arranged so as to be axially displaceable between the outer back-up rolls (6, 7) and the working rolls (2, 3) and wherein blocks (12), secured to said frame, have vertical guide surfaces for journal chocks (13, 14) of the working rolls (2, 3) and vertical guide surfaces for journal chocks (15, 16) of the intermediate rolls (4, 5), and wherein, moreover, adjusting means (22) are provided for the balancing and bending of the intermediate rolls (4, 5), which adjusting means (22) are adapted to act on said journal chocks (15, 16) of the intermediate rolls (4, 5) with their operating force being directed against the outer back-up rolls (6, 7) and wherein said adjusting means (22) for effecting bending of the intermediate rolls (4, 5) are displaced in a horizontal direction parallel to the roll axes,

the improvement which comprises that
(a) said adjusting means (22) for bending the intermediate rolls (4, 5) are seated in said blocks (12) secured to said frame;
(b) at each of said blocks (12) is arranged a lower (20) and an upper (19) guide piece displaceable in vertical direction, each of said guide pieces (19, 20) being provided with guide surfaces for guiding the respective journal chocks (15 and 16) of the intermediate rolls (4 and 5);
(c) said journal chocks (15, 16) are capable of displacement in a horizontal direction relative to the operational position of the adjusting means (22) and/or the operational position of the adjusting means (22) is varied in its horizontal direction (20', 22') within the guide pieces (19, 20);
(d) each guide piece (19, 20) has a part (23) on the frame and a part (24) associated with the respective journal chock (15, 16) of the intermediate rolls (4, 5);
(e) the two said parts (23, 24) of the guide pieces (19, 20) are displaceable relative to each other exclusively in vertical direction;
(f) between said parts (23, 24) two adjusting means (22, 22', 22"), spaced one behind the other, engage as a bending device in axial direction of the intermediate rolls (4, 5);
(g) said journal chocks (15, 16) of the intermediate rolls (4, 5) are arranged so as to be exclusively displaceable horizontally (21;
FIGS. 1 to 3) relative to the associated parts (24) of the guide pieces (19, 20);
and
(h) the two adjusting means (22, 22', 22") which are spaced one behind each other are variable with respect to their displacement forces in dependence on the respective axial position of the journal chocks (15, 16) of the intermediate rolls.

8 more elements

In a six-high roll stand of the kind having a frame, two working rolls (2, 3), two intermediate rolls (4, 5) and two outer back-up rolls (6, 7), wherein at least the outer back-up rolls (6, 7) and the intermediate rolls (4, 5) are located one above the other in essentially the same vertical plane, wherein the intermediate rolls (4, 5) are arranged to be axially displaceable between the outer back-up rolls (6, 7) and the working rolls (2, 3), and wherein blocks (12) are secured to said frame and are provided with vertical guide surfaces for journal chocks (13, 14) of the working rolls (2, 3) and with vertical guide surfaces for journal chocks (15, 16) of the intermediate rolls (4, 5), and wherein adjusting means (38) for the balancing and bending of the intermediate rolls (4, 5) are provided, which adjusting means (38) are adapted to act on said journal chocks (15, 16) of the intermediate rolls (4, 5) with their operating force being directed against the outer back-up rolls (6, 7) and wherein said adjusting means (38) are displaceable in a horizontal direction parallel to the roll axes, the improvement which comprises that

(a) said adjusting means (38) for causing bending are arranged in the blocks (12) on said frame;
(b) at each block (12) a lower (20) and an upper (19) guide piece is arranged, said guide pieces (20, 19) being displaceable in vertical direction and having guide surfaces for the journal chocks (16, 15) of the intermediate rolls (4, 5);
(c) the horizontal displacement of the adjusting means (38) relative to the journal chocks (15, 16) is effected within the guide pieces (19, 20);
(d) each guide piece (19, 20) has a part (34) on the frame and a part (35) associated with the respective journal chock (15, 16) of the intermediate rolls (4, 5);
(e) the two said parts (34, 35) of the guide pieces (19, 20) are relatively movable to each other in horizontal and vertical direction (36);
(f) between said guide pieces, said adjusting means (38), arranged in the part (35) of the guide pieces (19, 20), is situated on the center plane of the journal chocks (15, 16) of the intermediate rolls;
(g) the part (35) of the guide pieces (19, 20) is connected with the associated journal chock (15, 16) so as to be horizontally displaceable (21) relative to the part (34);
and
(h) the part (34) is in operative connection with the part (35) of the guide pieces (19, 20) by means of an intermediate part, which intermediate part on the one hand has horizontal slide guides (37) toward the part (34) and on the other hand vertical slides toward the part (35;
FIGS. 5 and 6).

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/678,371Filed 5 Dec 1984 · continuation
Priority: DE 310769328 Feb 1981
Granted: 1 Oct 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B21B 29/00
Counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 13/14
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories: having counter-pressure devices acting on rolls to…
B21B 31/18
Adjusting or positioning rolls: by moving rolls axially
B21B 13/145
Having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls: lateral support devices for rolls acting…