Device to vary the positioning of the rolling rolls for plane products
AssigneeDanieli & C. Officine Meccaniche SpA
InventorsFausto Drigiani, Stanislaw Pawlowski, Enrico Ventulini
Life of this patent
Estimating the term…
Abstract
A device to vary the positioning of a rolling roll (10) for plane products, comprising a housing (12) able to support the roll (10) and the respective chocks (11) thereof. On the crossing plane of the roll (10) and at the two sides of every chock (11) a drawing sector (14a, 14b) is provided for cooperating with drive means (17a, 17b, 18a, 18b), and a transmitter element (22) is present in an intermediate position to achieve an oscillating connection between the drawing sector (14a, 14b) and the drive means (17a, 17b, 18a, 18b), which are associated with position transducer means (19a, 19b) and data processing means (21).
Claims13
1 - Device to vary the positioning of at least a rolling roll (10) for plane products, comprising a housings (12) able to support said roll (10) and the respective chocks (11), characterized in that on the crossing plane of said roll (10) at least one drawing sector (14a, 14b) is connected to the corresponding side of every chock (11) for cooperating with corresponding drive means (17a, 17b, 18a, 18b), in that a transmitter element (22) is disposed in an intermediate position between said drawing sector (14a, 14b) and said drive means (17a, 17b, 18a, 18b) to achieve an oscillating connection between said drawing sector (14a, 14b) and said drive means (17a, 17b, 18a, 18b), in that said drive means (17a, 17b, 18a, 18b) have a linear axis of displacement substantially parallel to the nominal axis (Y) of the roll (10), and in that said drive means (17a, 17b, 18a, 18b) are associated with position transducer means (19a, 19b) and with data processing means (21).
2 - Device as in claim 1, characterized in that at least a portion of said drive means (17a, 17b, 18a, 18b) is disposed outside said housing (12).
3 - Device as in claim 1 or 2, characterized in that said drawing sector (14a, 14b) is able to move according to a curve coherent with the vertical axis of the chock (11).
4 - Device as in claim 3, characterized in that said curve comprises an arc of a circle with the center at a point (C) arranged along the nominal axis of rotation (Y) and in correspondence with the center line of said roll (10).
5 - Device as in claim 4, characterized in that the crossing of said roll (10) is achieved by means of four drawing sectors (14a, 14b), two for each chock (11), which are guided in their arched displacement by cylindrical guides (16) having an axis of rotation passing through said point (C) and perpendicular to the axis of rotation (Y) of said roll (10).
6 - Device as in claim 5, characterized in that the displacements of said four sectors (14a, 14b) are two by two and antisymmetric, of the opposite sign on the two chocks (11) and of equal entity.
7 - Device as in claim 6, characterized in that said drive means comprise, for each of said four sectors (14a, 14b), a jack (18a, 18b) arranged parallel to the axis of rotation (Y) of the roll (10) and a pin (17a, 17b) guided prismatically on the corresponding housing (12).
8 - Device as in claim 7, characterized in that said transmitter element comprises a lever (22) hinged on the pin (17a, 17b) and on the corresponding sector (14a, 14b) and able, as its angular lay-out varies, to displace said sector (14a, 14b) according to said arc of a circle.
9 - Device as in claim 8, characterized in that each lever (22) is inclined, with respect to the normal to the axis (Y) of the roll (10), by an angle (β) of between about 10° and 45°, advantageously between about 15° and 30°.
10 - Device as in claim 1, characterized in that said drawing sector (14a, 14b) contains actuating means (30, 31) to actuate the bending of said rolling roll (10), so that every bending force applied by said means (30, 31) to actuate the bending can be maintained during the crossing of said rolling roll (10).
11 - Device as in claim 10, characterized in that said actuating means comprise at least a jack (31) positioned in said drawing sector (14a, 14b).
12 - Device as in claim 11, characterized in that said jack (31) has a single effect, either of the IN or OUT type, or of the IN plus OUT type.
13 - Device as in claim 11, characterized in that said jack (31) has a double effect, with a hammer head.