DE102013009695A1 - Spray bar adjustment for a multi-roll mill - Google Patents

Abstract

The invention relates to a spray bar adjustment for a multi-roller mill, in which a plurality of rollers or rollers are arranged in a stand block arranged in an enclosure above and below a strip to be rolled, the upper and lower spray bars which can be aligned in the roll gap ( 8) are assigned and the front of the rollers is provided with a door (1) which enables access to the rollers and closes the housing of the scaffolding during operation. At the inside of the door (1) for the upper and lower spray bars (8), their working angle position defining stops (3) or supports are provided.

Description

The invention relates to a spray bar adjustment for a multi-roll mill, in which a plurality of rollers or rollers are arranged in a scaffolding block above and below a strip to be rolled, wherein the work rolls are assigned to the roll gap alignable upper and lower spray bars and wherein the front side of the Rolls a access to the rollers enabling the enclosure of the scaffold in the operation closing door is provided.

The basic structure of such a multi-roll mill is well known from the prior art.

As an example, the Brochure "Multi-roll Rolling Mills for Stainless Steel Belts" SMS Siemag, SMS Group, W6 / 306D, 1000/05/09, pages 32 + 33 to be named. There, a multi-roll mill is shown, the housing is closed by a door during operation.

On the inside of the door bearings are provided for receiving roller axles with the door closed.

The work rolls are assigned spray bars. These have the task of ensuring the lubrication of the roll gap with rolling oil / emulsion. Furthermore, they should cool the work roll and inner intermediate roll by spraying the rolling medium. Furthermore, this device has the task to support the threading process of the rolling stock.

Are known from DE 1427998 Bearing cups, inter alia for receiving rollers, lubricant nozzles and the setting means for roll adjustment.

In EP 0669172 a device is described with sheets that parallels axially to the work rolls, are pivotally connected to the lower frame and have channels, for the purpose of coolant supply.

In addition to the complex design, the known embodiments have the disadvantage that for mounting / dismounting of support axes, the respective devices for Medienaufbrignung with the supply lines must either be completely or partially dismantled. As a result, among other things, the feeding devices must be readjusted after each disassembly / assembly in order to avoid possible leaks. However, this is not always guaranteed and requires a lot of time.

Furthermore, the targeted spraying of the rolling oil or the emulsion into the roll gap by the possible change in diameter of the rolls, which may result, for example, by the grinding of the rolls, not ensured.

Object of the present invention is to facilitate the positioning of the feeders and ensure to design in particular easy to install and space-saving.

• – dass an der Türinnenseite für den oberen und den unteren Spritzbalken, deren Arbeitswinkelposition definierende Anschläge oder Auflager vorgesehen sind.

This object is achieved according to the invention in a spray bar adjustment for a multi-roll mill, in which arranged in a housing scaffolding block above and below a strip to be rolled each have a plurality of rollers or rollers, wherein the work rolls in the roll gap alignable and adjustable upper and lower spray bars are assigned and wherein the front side of the rollers provides access to the rollers, the enclosure of the framework during operation closing door, characterized

• - That on the inside of the door for the upper and the lower spray bar, the working angle position defining stops or supports are provided.

These stops may be formed in one piece or in several parts, wherein the multi-part is achieved by the stop itself and a side-parcel, the side-parcel serves to set exactly, we stand up the stop from the inner surface plane of the door or projects.

Preferably, the stops are used to position the spray bars, which are moved. According to one embodiment of the invention, it is provided that the pivoting movement of the spray bars in and out of the working position and the method in the direction of the working position via a setting. This may be a toothed drive, wherein the toothed pinion on the spray bar in each case a meshing rack is displaceable by a hydraulic cylinder.

The adjuster can also be electromechanical and / or hydromechanical in nature, according to other embodiments.

The adjustment of each spray bar can be done by a rack-pinion connection, which is operated in each case by a - in particular its own - hydraulic cylinder. Thus, each spray bar can be adjusted independently.

The position of the spray bars during rolling operation is ensured by the mechanical stops integrated into the door. For the Positioning facilitated by the stops, the upper spray bars must be raised and the lower spray bars lowered. Then the door to the rolling stand is closed and the spray bars are lowered onto the stops integrated in the door.

The angle of attack of the spray bars can be set variably in dependence on the strip thickness and the frame size and roll combination by means of a proportional valve circuit, in particular a hydraulic proportional valve circuit. Electric and / or pneumatic proportional valve controls can also be used. The signals required for the proportional valve control are generated by a travel measuring system integrated in the cylinder.

Another feature is the support of the work roll change process. Here, the band is pressed down by lowering the upper spray bar when changing the upper work roll, this must be lowered at the same time the lower spray bar. When changing the lower work roll, the tape is raised with the help of the lower spray bar, now the upper spray bar must be raised.

Finally, support for the threading process is one of the additional functions, especially if the lower injection beam is raised for this process so that it performs a kind of ramp function.

Both after the roll change and after the support during threading the positioning of the spray bar is substantially facilitated by the inventive solution.

The invention will be explained below with reference to the drawing. Showing:

1 a view of the inside of the door according to the invention,

2 a view of the inside of the door in the previous design and

3 the spray bar adjustment with gear.

In these representations, the roles of the framework, as well as the framework itself have not been shown in order to keep the presentation easily understandable to the essentials.

Shown are the rolling oil connections for the spray bars, with 4 have been designated, and the attacks 3 for the spray bars used in the 3 With 8th have been designated.

The upper and lower spray bars 8th are adjusted in their working position and aligned to the rolling line 10 , as in 3 represented by stops or supports 3 held on the inside of the door 1 located, which closes the housing of the framework in the operating state, ie during rolling.

As explained above, the spray bars 8th temporarily from the - in 3 - Moved position shown, these movements on the one hand consist of a pivoting up or down and from a sliding movement of the adjusting back and forth.

These movements, for example, by a pinion with rack 7 and gear 9 in detail, by the one with the spray bar 8th each connected pinion or gear 9 and the rack 7 which is engaged with this each.

The movement of the rack 7 takes place by one of these respective associated hydraulic cylinder 6 standing in a spray bar holder 5 is stored.

When returning the spray bars 8th , their aligned working position is automatically resumed by the contact with the stops - without the need for repositioning.

As mentioned above, the adjusting device described is to be regarded as an embodiment, since it may also be formed electromechanically and / or hydromechanically.

The particular advantage of the solution according to the invention is that the positioning is facilitated when the door is closed and the rollers or rollers are moved to working position, as for example after moving apart - in a roll change process - takes place.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 1427998 [0006]
• EP 0669172 [0007]

Cited non-patent literature

• Brochure "Multi-roll Rolling Mills for Stainless Steel Belts" SMS Siemag, SMS Group, W6 / 306D, 1000/05/09, pages 32 + 33 [0003]

Claims (7)

Spray bar adjustment for a multi-roll mill, wherein in a housed in a housing frame above and below a roll to be rolled each have a plurality of rollers or rollers are arranged, wherein the work rolls in the roll gap alignable upper and lower spray bars ( 8th ) and wherein the front side of the rollers provide access to the rollers, the enclosure of the framework in operation closing door ( 1 ), characterized in that on the inside of the door ( 1 ) for the upper and lower spray bars ( 8th ) whose working angle position defining stops ( 3 ) or supports are provided. Spray bar adjustment according to claim 1, characterized in that the pivoting movement of the spray bars ( 8th ) in and out of the working position and the method in the direction of the working position via a Anstelleinrichtung takes place. Spray bar adjustment according to claim 2, characterized in that the adjusting device is a toothed drive ( 7 . 9 ), with the pinion ( 9 ) on the spray bar ( 8th ) meshing rack ( 7 ) by a hydraulic drive ( 6 ) is displaceable. Spray bar adjustment according to claim 2, characterized in that the adjusting device is formed electromechanically or hydromechanically. Spray bar adjustment according to one of the preceding claims, characterized in that the adjusting device is provided with an integrated proportional valve circuit. Spray bar adjustment according to one of the preceding claims, characterized in that the stops ( 3 ) on the inside of the door ( 1 ) are kept adjustable. Spray bar adjustment according to claim 6, characterized in that the stops ( 3 ) are formed in one or more parts.

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