DE102008003713A1 - rolling device - Google Patents

Abstract

The invention relates to a rolling device (1) with at least one work roll (2, 2 ') and an arrangement of support rolls (4, 5, 4', 5 '), wherein first support rolls (4, 4') and second support rolls (5, 5 ') are arranged such that the axis of the work roll and the axes of the first and second work rolls are arranged triangular to each other and each form first and second support rollers groups of support rollers, wherein a group of support rollers, a loading cylinder for adjusting the support rollers to the work roll assigned.

Description

Technical area

The The invention relates to a rolling device according to the preamble of Claim 1.

State of the art

Rollers are well known in the art. In this case, such rolling devices are known in which a pair of work rolls are acted upon by at least two opposite the work rolls larger support rollers for receiving the rolling forces, wherein in each case at least one support roller acts on a work roll. Such an arrangement is for example in the JP 60154804 or by the DE 2547490 A disclosed.

Also known are those rolling devices in which the work rolls are acted upon by two substantially juxtaposed rolls. Such rolling devices are for example by the US 1614425 or by the DE 35 37 153 A1 known.

The WO 2007/051369 A1 discloses a rolling apparatus in which the work rolls are supported by two support rollers fixedly mounted in a support member.

adversely on these rolling devices it is that the back-up rolls are designed as one-piece rollers and thus not arbitrary are good in their roll bending influence bar or the back-up rolls as multi-part rollers are formed, wherein the individual support roller parts are not independently controllable, so that the roll bending can not be varied specifically. In addition, have massive one-piece backup rollers have the disadvantage of being on Less readily available to the market than composite back-up rolls.

Presentation of the invention, problem, solution, advantages

It The object of the present invention is a rolling device to provide in which the procurement of the backup rolls is facilitated and at the same time a adjustability or influenceability the roll bending is vornehmbar.

According to the invention the object is achieved by a rolling device according to the Characteristics of claim 1 with a rolling device which thereby characterized in that each of the first and second backup rolls together form a group of back-up rolls that at least one of the groups for supporting the work roll is provided; and that at least one of the groups of backup rolls a Beaufschlagungszylinder for employment of the support rollers is assigned to the work roll.

The so-called first backup rolls are characterized by that they are substantially axially to a first support roller axis are arranged. All so-called second back-up rolls are also characterized by the fact that they at least approximately are arranged axially to a second support roller axis, wherein the first back-up roll axis and the second back-up roll axis but not coincide, but as described in claim 1, in cross-section - with the axis of the working roll forming a triangle.

in the Difference to the prior art where one or two back-up rolls each over the entire length of the work roll were provided, the present invention, a plurality from short back up rollers over the length to distribute the work roll distributed. Such short support rollers are much easier to produce than back-up rolls, extending over the entire length of the work rolls extend. At the same time allows individual assignment an admission cylinder to as far as possible each group of first and second back-up rolls a local force on the work roll and thus a targeted local bending of the same. By the provision of a plurality of such groups of back-up rolls along the entire length of a work roll is thus an individual force distribution or roll bending along the Total length of the work roll possible.

It is beneficial if each group of back-up rolls respectively an impingement cylinder is assigned to allow the groups of Support rollers each independently controllable are.

Also it is expedient if a group of back-up rolls first and second back-up rolls are assigned in such a way, that the application of the working roller through the first and the second backup rolls is substantially about the same.

Farther it is advantageous if the number of back-up rolls per Support roll type multiplied by the width of the backing roll type, viewed in the axial direction, for each support roller type a group is essentially about the same.

Also it is useful if the loading cylinder on the one hand to the support rollers and on the other hand a substantially rigid traverse supported.

Farther it is expedient, if the admission of the Back-up rollers of a group through the loading cylinder variable from group to group.

About that In addition, it is advantageous if the crossbeam in a scaffold is held relocatable.

advantageous Further developments are described in further subclaims.

Brief description of the drawings

below the invention is based on an embodiment explained in more detail with reference to the drawings.

It demonstrate:

1 a schematic representation of a rolling device in a front view,

2 a schematic representation of a rolling apparatus in a front view, and

3 a schematic representation of the rolling device according to 1 in a side view.

Preferred embodiment the invention

The 1 schematically shows a view of a rolling device 1 with a stripper 2 , The stripper 2 is, as is typically known twice, to work in the gap 3 between the two work rolls 2 to process a rolling stock. For the sake of simplicity, is in 1 but only a stripper 2 illustrated, wherein a second work roll 2 only indicated is drawn. It is therefore quite conceivable that the rolling device 1 with respect to the roll gap 3 is formed symmetrically, as it is in 2 is shown. In 2 the reference numerals for the same elements are marked accordingly. For example, the two work rolls with 2 and 2 ' designated.

The stripper 2 is done by back-up rolls 4 . 5 supported in the direction of the axis 17 the stripper 2 considered each juxtaposed. As in 1 can be seen, are the support rollers 4 . 5 in groups 16 arranged, wherein by way of example in each case a support roller 5 from two back-up rolls 4 are arranged adjacent. In 1 are four such groups 16 shown. Also noticeable is that the back-up roll 5 in its extension in the axial direction is wider than the support rollers 4 , In this case, the number of back-up rolls 4 and whose width may vary, including the number of back-up rolls 5 and their width may vary as well. Also, the backup rolls 4 . 5 be arranged in a different order. Also, the number of arranged support rollers 4 . 5 vary, for example, the length of the work roll 2 can be made dependent. In the embodiment, in each case a wide support roller 5 provided, on the one hand on the work roll 2 supported and two about half as wide support rollers 4 that are on the other side of the stripper 2 supported. This advantageously ensures that the surface pressure and / or the application to both sides of the work roll 2 are essentially the same.

The back-up rolls 4 . 5 for the upper work roll 2 are provided above the same or resting on the same above. The axis 6 the first backup rolls 4 and the axis 7 the second back-up rolls 5 each run parallel to the axis of the work roll. The axes 6 and 7 are spaced apart, but their distance is preferably smaller than the radius of one of the support rollers 4 or 5 is. This is especially good in 3 to recognize the one side view of the arrangement of 1 shows. According to 3 becomes the stripper 2 So from two rows 10 . 11 from back-up rolls 4 . 5 supported, more precisely from a series 10 from first back-up rolls 4 and from a series 11 from second back-up rolls 5 , The rows of back-up rolls or the back-up rolls 4 . 5 or their axes are with the work roll 2 arranged triangular or prismatic, wherein the support rollers 4 . 5 are preferably arranged such that the adjacent support rollers 4 . 5 of the first type between backup rolls 5 . 4 of the second type.

The prismatic roller arrangement becomes the work roll 2 supported both in the horizontal direction and in the vertical direction.

Like the 1 shows and as it does in the 2 or 3 can be seen, is in each case a group of back-up rolls 4 . 5 a loading cylinder 12 provided, which the backup rollers 4 . 5 acted and which between the support rollers 4 . 5 and a traverse 13 a scaffold 14 or the device is arranged. By the assignment of an admission cylinder 12 to a group 16 from back-up rolls 4 . 5 may be the imposition of group 16 to group 16 the back-up rolls 4 . 5 be varied. Advantageously, the Beaufschlagungszylinder 12 a so-called hydraulic AGC cylinder, which the backup rolls 4 . 5 a group 16 hires. AGC stands for automatic gain control.

With a symmetrical arrangement of the support rollers 4 . 5 above a first work roll 2 and below a second work roll 2 can the respective Beaufschlagungszylinder 12 such as AGC cylinders, above and / or below the two rows of back-up rolls 4 . 5 be arranged. This can be made dependent on which requirements are placed on the product to be processed.

According to the invention, the traverse 13 a massive, rigid and possibly also heavy element, on which the loading cylinder 12 are attached. This can be the crossbar 13 on the scaffolding 14 by means of adjusting means 15 be adjustable. It is advantageous if by means of the adjusting means 15 the traverse 13 for example, depending on the roll grinding and / or the adjustment of the rolling height and / or the rolling thickness is adjustable. In a lower arrangement of admission cylinders 12 ' This may as well be the case that the adjustment of the traverse 13 ' about the adjusting means 15 ' can be done.

In particular, it is advantageous if the above-described arrangement of back-up rolls 4 . 5 with admission cylinders 12 is made to improve the work roll deflection in the rolling process in the vertical direction. This also improves the quality of the rolled product.

Through the admission cylinder 12 or AGC cylinder may have a negative or positive roll bend of the roll 2 be predetermined and adjustable, which is adjustable in the ongoing rolling process.

It is also advantageous if, for a predeterminable number of groups 16 from back-up rolls 4 . 5 and their corresponding setting a curve profile in the nip 3 is adjustable.

In case of having a work roll 2 is moved, that is a parallel stripper 2 or a roller with curve profile or a so-called CVC plus roller is used, as for example in the WO 2002/009896 has become known, the content of which belongs expressly to the disclosure of the present application.

Thereby There are improvements in the finished product, especially with regard to Quality and / or profile.

1

rolling device

2

Stripper

2 '

Stripper

3

nip

4

supporting roll

4 '

supporting roll

5

supporting roll

5 '

supporting roll

6

axis

7

axis

8th

radius

9

radius

10

line

11

line

12

Beaufschlagungszylinder

12 '

Beaufschlagungszylinder

13

traverse

13 '

traverse

14

framework

15

clamping means

15 '

clamping means

16

group

17

axis

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - JP 60154804 [0002]
• - DE 2547490 A [0002]
• - US 1614425 [0003]
• - DE 3537153 A1 [0003]
• - WO 2007/051369 A1 [0004]
• WO 2002/009896 [0032]

Claims (7)

Rolling device ( 1 ) with at least one work roll ( 2 . 2 ' ) and the work roll associated first support rollers ( 4 . 4 ' ) and second backup rolls ( 5 . 5 ' ) which are arranged to each other such that the axis of the work roll ( 2 . 2 ' ) and the axes of the first and second support rollers - viewed in cross-section - ( 4 . 5 . 4 ' . 5 ' ) are arranged triangular, characterized in that individual ones of the first and second support rollers ( 4 . 5 . 4 ' . 5 ' ) together a group ( 16 ) of back-up rolls form at least one of the groups for supporting the work roll; and that at least one of the groups ( 16 ) of back-up rolls ( 4 . 5 . 4 ' . 5 ' ) an admission cylinder ( 12 . 12 ' ) for the employment of the support rollers ( 4 . 5 . 4 ' . 5 ' ) to the work roll ( 2 . 2 ' ) assigned. Rolling device according to claim 1, characterized in that in that the rolling device has an upper work roll with at least one an upper group of back-up rolls and / or a lower one Work roll with at least one lower group of back-up rolls wherein the loading cylinder associated with the upper group the upper group of back-up rolls from the top to the top Working roll hires and the lower group associated Beaufschlagungszylinder the lower group of support rollers from below against the lower Stripper hires. Rolling device according to claim 1 or 2, characterized in that the group ( 16 ) associated first and second support rollers are arranged such that the application of the work roll ( 2 . 2 ' ) through the first and the second support rollers ( 4 . 5 . 4 ' . 5 ' ) with support forces is about the same size. Rolling device according to claim 3, characterized in that the number of support rollers ( 4 . 5 ) per backing roll type multiplied by the width of the backing roll type, viewed in the axial direction, for each backing roll type of a group ( 16 ) is substantially the same. Rolling device according to one of the preceding claims, characterized in that the loading cylinder ( 12 . 12 ' ) on the one hand on the support rollers ( 4 . 5 . 4 ' . 5 ' ) and on the other hand on a substantially rigid traverse ( 13 . 13 ' ) is supported. Rolling device according to one of the preceding claims, characterized in that the loading of the work roll by a plurality of groups ( 16 ) of back-up rolls ( 4 . 5 . 4 ' . 5 ' ) by the loading cylinders ( 12 . 12 ' ) of group ( 16 ) to group ( 16 ) is variable designable. Rolling device according to one of the preceding claims, characterized in that the traverse ( 13 . 13 ' ) in a stand ( 14 ) of the rolling device is held displaceable.