JP2003527968A - Equipment for rolling workpieces, especially metal foil - Google Patents

Abstract

The present invention relates to an apparatus for rolling a workpiece such as a metal plate or a rod, particularly a metal foil, the apparatus comprising at least one roll stand (1) and the roll stand (1). At least two driven working rolls (2, 3) rotatably mounted on each other, cooperating with each other to roll the workpiece to the required shape and / or dimensions and orthogonal to the rolling direction (4). And at least one of the working rolls (2, 3) can move in the roll stand (1) in a direction perpendicular to a rolling direction (4), Associated with a pressure unit (13, 14) capable of exerting a rolling pressure (N) on the working roll, wherein at least one of said working rolls (3, 4) comprises a backup row; Without rolling and rotating as a trough in bearing brackets (11, 12) supporting at least a part of the outer surface (9, 10) of said working rolls (2, 3). A rolling mill, which is fitted, means for providing a continuous lubricating layer between the outer surfaces (9, 10) of said working rolls (2, 3) and the bearing brackets (11, 12), preferably Comprises means in which at least one grooved fluid chamber (29, 30; 32-35) is provided on a part of said bearing bracket (11, 12) for fitting said working roll (2, 3); Means are communicated to a fluid source and said working rolls (2, 3) are connected to said pressure units (13, 14) via said bearing brackets (11, 12) to provide pressure The rolling pressure is transmitted, and the pressure units (13, 14) preferably transmit one or more rolling forces (N) uniformly along the entire length of the bearing bracket (11, 12). Provided as a plurality of hydraulically actuated cylinders (H). A major advantage of the present invention is that it eliminates the support roll, provides a new working roll inset system, and eliminates the unavoidable wear and energy loss of conventional equipment, thereby making it considerably simpler and more economical. It is to provide a solution.

Description

Detailed Description of the Invention

FIELD OF THE INVENTION The present invention relates to an apparatus for rolling metal sheets or plates and rods, especially workpieces such as metal foils.

BACKGROUND OF THE INVENTION As is well known, the process of rolling involves pushing a raw material into a roll stand and rolling the work piece in one or more steps by a roll to a desired thickness or profile. In the rolling process, plastic forming increases the hardness of the material, but reduces its extensibility. It is known that cold-rolled products have particularly high dimensional accuracy and good surface characteristics.

Foil, such as aluminum foil, is currently rolled between "closed" working or working rolls by applying stress by wrapping or unwinding it. Since the working roll is closed, the roll stand thus acts as a stressed stand from the beginning, the "roll gap" actually occurring when inserting the foil. The shape of the strained area is more variable or distorted compared to sheet rolling due to the considerable flattening effect of the working roll, which is taken into account when calculating the rolling force. The low strength of the thin foil, as well as the elastic deformation of the working rolls, bearings and stands, limits the thickness of the foil rolled in a single piece, which is about 12 micrometers.

In the roll stands used today, one or more pairs of cooperating working rolls are fitted at their ends for rotation into bearings arranged in the roll stand, All working rolls are tethered to a rotary drive. Furthermore, the working roll is associated with a generally mechanical or hydraulic roll adjuster which is positioned transversely to the rolling direction, with which the working roll is adjusted in order to adjust the rolling pressure and the rolling clearance. Can be moved at each end of the one. The device further comprises a device for guiding the work piece inward or outward.

A common feature of known rolling mills is that the rolling pressure is relatively high and therefore the working rolls are subject to bending deformation. These things are currently
A free-rotating backup roll or support roll behind the working roll,
It is partially eliminated by placing it parallel to the working roll. The role of the support is to support the working roll by preventing deformation of the working roll. Support rolls can be one or more pairs of working
It is located outside the roll.

US Pat. No. 4,611,479 describes such a metal foil rolling apparatus, in which a pair of working rolls are supported by respective backup rolls. There, the pressure unit for the adjustment, on the outside,
By placing it in the skirt of the outer backup roll, it is desirable to eliminate the difference in foil thickness and the force by the pressure unit is controlled by the signal of a pressure sensor placed in the stressed foil. It This solution is backup
We are not thinking about fitting working rolls, only to improve rolls.
A similar solution is disclosed in U.S. Pat. No. 4,480,452, in which two working rolls are again supported by an external backup roll and a hydraulically actuated cylinder is used for this backup roll. One of them is used as a pressure unit to realize a more uniform pressure force and reduce the variation in foil thickness.

However, practical experience has shown that the use of backup roll press rolling for various rolling procedures is associated with considerable friction and rolling deformation. At the same time, significant roll wear must be considered. Friction losses, of course, add to the driving force requirement, which significantly increases the operating cost of the device. As a result of the deformation and friction of the backup rolls, the working rolls have a relatively short service life and must be replaced frequently, which necessitates a machine stoppage, increased uptime and considerable Costs.

DISCLOSURE OF THE INVENTION It is an object of the present invention to eliminate the above mentioned drawbacks, ie an improved device for rolling workpieces such as foils in particular, which is much simpler to construct and is a An object of the present invention is to provide an apparatus capable of reducing deformation of rolls. Another object is to provide a device that can be operated more economically for a longer service life than the conventional devices described above.

According to the invention, an apparatus for rolling a workpiece such as a metal sheet or a rod, in particular a metal foil, comprising: at least one roll stand, and at least rotatably fitted on said roll stand. Two driven working rolls, which cooperate with one another to roll the workpiece into the required shape and / or dimensions, and which are located orthogonally to the rolling direction; At least one of the rolls is associated with a pressure unit capable of moving in the roll stand in a direction orthogonal to the rolling direction and capable of exerting rolling pressure on the working roll; At least one of the rolls has no backup roll and is located on the opposite side of the rolling area as the trough The rolling device is rotatably fitted in a bearing bracket that bears at least a portion of the outer surface of the roll, and the rolling device further comprises means for providing a lubricating layer between the outer surface of the working roll and the bearing bracket. And preferably at least one intake or groove-shaped fluid chamber comprises said means provided in a part of said bearing bracket for fitting said working roll, said means being in communication with a fluid source, The working roll is connected to the pressure unit through the bearing / bracket to transmit rolling pressure, and the pressure unit uniformly transmits rolling pressure along the length of the bearing / bracket. As such, the rolling apparatus is provided, preferably provided as one or more hydraulically actuated cylinders.

According to a further feature of the invention, the bearing bracket comprises a central fluid chamber and / or a longitudinal fluid plane of the device, which is arranged orthogonal to the rolling direction. There is provided at least one lateral fluid chamber located laterally of the longitudinal mid-plane, said fluid chamber (s) being advantageously connected to individually controllable fluid sources.

The pressure unit preferably comprises a series of hydraulically actuated cylinders arranged along substantially the entire bearing and bracket length and preferably in communication with a common source of pressure fluid.

According to the invention, the central and / or lateral fluid chambers, which are connected to a fluid source whose pressure can be controlled, are formed as hydrodynamic bearings for the working surface of the working roll. . Therefore, with the arrangement according to the invention,
Apart from the indentation system at both ends of the rolling working roll, the inset is actually solved by bearing brackets that infuse the working roll externally as troughs along most of the working surface of the working roll. . The means for providing a lubricious layer between the outer surface of the working roll and the bearing bracket may include a nest or groove fluid chamber provided in a portion of the bearing bracket that fits the working roll. The fluid source is contacted, which results in hydrodynamic bearing support on the surface of the working roll, which also is uniquely involved in rolling.

The bearing bracket itself is a rigid unit, which is subjected to the rolling pressure of the pressure unit, which pressure is evenly distributed along the entire working length of the working roll. Therefore, with this device, it is possible to ensure that the rolling pressure is evenly transmitted to the working rolls via the bearing brackets, and thus is compellingly applied in the prior art, and when used, it has the above-mentioned harmful effects. Backup roles with no consequences are no longer needed.

The above measures thus provide a surprisingly simple and large solution according to the invention, which results in improved working roll life, reduced wear, reduced drive energy requirements, and other operational and economic requirements. With extremely advantageous results above,
A surprising additional effect is provided to the worker.

The invention is explained in more detail by means of the enclosed drawings, which show an embodiment of a device according to the invention.

Description of an embodiment of the invention A possible embodiment of the device according to the invention as shown in the drawing is for rolling a metal foil. This embodiment shows a pair of working rolls 2 for rolling metal foil in this case.
And a roll stand 1 provided with 3. According to the invention, these are in particular fitted so that they can be rolled, which will be explained below. The working rolls 2 and 3 are arranged across the rolling direction (the moving direction of the foil) indicated by the arrow 4, as shown in FIG.

The working rolls 2 and 3 are respectively provided with axle stubs 5 and 6 which project laterally from the roll stand 1 and are connected to a rotary drive device (not shown) such as an electric transmission motor. In FIG. 2, arrows 7 and 8 respectively indicate working and
The directions of rotation of rolls 2 and 3 are shown, indicating that they rotate in opposite directions.

The working length of the cooperating cylinder outer surfaces 9 and 10 of the work rolls, in this case in particular the aluminum foil, of the working rolls 2 and 3 respectively is indicated by L_, which is actually the rolling of the foil. Get involved (Figure 3).

According to the invention, the working rolls 2 and 3 are rotationally fitted to the roll stand 1 but not at their respective ends. In addition, backup rolls or support rolls are not used, as is conventional in conventional solutions. In sharp contrast, with the device according to the invention the working roll 2
And 3 respectively support at least a part of the cylinder outer surfaces 9 and 10 of the working rolls 2 and 3 for cooperating foil rolling, respectively, and are rotatably fitted in the fitting bearing brackets 11 and 12. Be done.

In this case, the bearing brackets 11 and 12 are arranged as mirror images of one another in the rolling direction indicated by the arrow 4. Each of these is provided with means for providing a lubricating layer between the outer surfaces 9, 10 of the working rolls 2, 3 and the bearing brackets 11, 12. In this case, said means comprises a groove-shaped lubricant chamber 2
Reference numerals 9 and 30 are formed within the portions of the bearing brackets 11, 12 that respectively fit the working rolls 2 and 3 and are connected to a pressure-controllable lubricating fluid source, discussed below. It should be noted that such a means can also be formed as a lubricant inlet groove which communicates with the surface of the rolls 2, 3 and / or the bearing brackets 11, 12 (not shown).

The bearing brackets 11 and 12 are fairly stiff, in this case fitting the surfaces 9 and 10 of the working rolls 2 and 3 over their entire length, the dimensions of which when working under rolling pressure. Providing uniform support for rolls 2 and 3 and thus also the constant foil thickness required for wider foils,
In other words, it can guarantee higher product quality.

According to the present invention, the working role of at least one of the pair of working roles.
The roll is associated with a pressure unit, which is capable of exerting the rolling force indicated by arrow N_ transversely to the working roll in the direction indicated by arrow 4 (FIG. 6). In the illustrated embodiment of the invention, both working rolls 2 and 3 are provided with pressure units 13 and 14, respectively. However, they do not have bearing brackets 11 and 1 as shown in FIGS.
By placing 2 in between, the rolling pressure is transmitted to the working rolls 2 and 3, respectively.

The pressure units 13 and 14 are arranged next to each other in this case as a series of hydraulically actuated cylinders H_ (see FIGS. 1A and 3) and communicate with a common fluid source 41 providing a controllable hydraulic pressure and quantity. (Fig. 7). Therefore, the pressure units 13 and 14, according to the invention, are arranged such that each can transmit a uniform rolling pressure over the entire length of the bearing brackets 11 and 12.

In the arrangement shown in FIG. 3, the roll stand 1 is provided with hydraulically actuated cylinders H as pressure units 13 and 14, in which the cylinders 38 of the units are arranged next to one another. However, it is also possible to arrange these cylinders 38 with a gap therebetween. In FIG. 3, a cylinder consisting of eight hydraulically actuated cylinders H_ is fixed at both ends by locking the collar 15 in the roll stand 1.

From FIGS. 4 and 5, the roll stand 1 is provided with cover plates 16 and 17 on both sides, respectively, and has an inlet opening 18 into which the workpiece to be molded enters and an outlet opening 19 from which it exits. You can see that each is prepared. The length of the inlet and outlet openings 18, 19 can be adjusted by the width of the foil (not shown) produced.

From FIG. 6, the foil rolling apparatus according to the present invention is provided with a well-known apparatus for guiding the workpiece to be rolled to the inside and outside, and the storage drum 20 for containing the foil material to be processed by the roll and the finished foil are wound up. It can be seen that it includes a foil drum 21 shown in FIG. Arrows 22 and 23 indicate the rotating directions of the storage drum 20 and the foil drum 21, respectively. In FIG. 6, the foil to be processed is referenced by reference numeral 24 and is indicated by a thick line, and the finished foil following the rolled portion is referenced by reference numeral 25 and is indicated by a thin line. Further in FIG. 6, the arrow N_ indicates the rolling pressure exerted by the pressure units 13 and 14.

As mentioned in the introductory part of this description, the outer working surfaces 9 and 10 of the working rolls 2 and 3 come into contact with each other during the rolling of the foil and thus in the basic position of this device the cooperating rolls 2 There is virtually no measurable "rolling gap" between and. For this reason, in this case, Working Role 2
Although 3 and 3 need only support along the axis, that support is provided on both sides by covers 26 and 27, which are shown here only schematically on the roll stand 1, but are removable. It is fixed to the lock collar 15 (Fig. 3).

As already mentioned, the bearing brackets 11 and 12 are each provided with means for providing a lubricating layer between the outer surfaces 9, 10 of the working rolls 2, 3 and the bearing brackets 11, 12. Preferably, at least one grooved fluid chamber fits in its part the working rolls 2 and 3, respectively, which is communicated to and advantageously controlled by a lubricant supply unit, which in this case is a lubrication supply unit. Brings possible pressure. The term "lubricant" is intended to include all materials and fluids that have the characteristics of a lubricant, such as oil, water, or its emulsifiers.

In the arrangement shown in FIG. 7, each of the bearing brackets 11 and 12 is provided with a central fluid chamber 29 and 30, respectively, which is transverse to the direction indicated by the arrow 4, the longitudinal direction of the device. It is formed as a vertical groove located on the intermediate plane 28. Both central fluid chambers 29 and 30 extend along the entire length L_ of working surfaces 9 and 10 of working rolls 2 and 3, respectively, as shown in FIG. Note that it has expanded significantly).

The fluid chambers 29 and 30 communicate with a common fluid source 31 via lines or pipes, which in this case (only here) are shown only by thin broken lines, which supplies the quantity and the pressure. It is possible to provide a controlled lubricant such as oil. On both sides of the intermediate longitudinal plane 28 of the device, as in the illustrated embodiment of the device according to the invention (FIG. 7), the bearing brackets 11 and 12 also have two lateral fluid chambers 32, 33 and 34, 35 respectively. It is provided. These are also formed as vertical grooves in the bearings / brackets 11 and 12 and extend at both ends of the bearings / brackets.

In the configuration shown in FIG. 7, the fluid chambers 33 and 35, 32 and 34 are in communication with each other (communication lines and pipes are abbreviated with thin broken lines), and they are a fluid supply unit capable of controlling pressure. A respective fluid source 36 and 37 is connected. Opposed fluid chambers 32 and 33, 34 and 35 can also be connected to each other to regulate or equalize the hydraulic pressure on both sides.

FIG. 7 shows a more detailed cross-sectional view of the hydraulically actuated cylinder H_ of the pressure units 13 and 14, respectively. The cylinder 38 consisting of the hydraulically operated cylinder H_
In this case, fixed in the roll stand 1 as shown, the front surfaces of their pistons 39 can move axially in the corresponding cylinders 38,
It is supported against the outer surfaces of the bearing brackets 11 and 12, respectively. The internal oil chamber 40 of the hydraulically actuated cylinder H_ is connected to a fluid source 41 via a pipe indicated by a thin dashed line. These are hydraulic oils in this case at the pressure required for rolling, which can supply the working fluid to the device. Although not shown separately, the fluid sources 31, 36, 37 and 41 are communicated to a central controller 42 which may include a well known computer (not shown) suitable for controlling the rolling process. Please note that.

In FIG. 7, the lateral fluid chambers 32, 33, 34 and 35 are also made in this case in this case such that an angle α is formed between the longitudinal intermediate plane 28 and the rolling direction indicated by the arrow 4. With respect to the plane in the direction indicated by the arrow 4, the longitudinal intermediate plane 28 also has mirror symmetry on both sides so that the angle is 30 °.

It should be noted that embodiments are possible in which one or both of the lateral fluid space (s) are eliminated or more than two of them are used. Their basic role is to provide in-line support for working rolls 2 and 3. Such a lateral load is, on the one hand, exerted on the working rolls 2 and 3 as a load resulting from the force withdrawing the workpiece to be machined, and on the other hand, depending on the type of drive and the arrangement of the working rolls 2 and 3. Lateral bending forces resulting from the rotational drive of 3 also occur, but such forces can be easily absorbed in this way.

Thus, in the illustrated embodiment, the pressurized lubricant forced into the fluid chambers 29 and 30 causes a force due to pressure to traverse the rolling direction indicated by arrow 4 to the working rolls 2 and 3. As will be seen, this pressure value is chosen such that a fluid bearing fit can be achieved. A prerequisite here is the step of operation, the mating surfaces 9 and 1 of the working rolls 2 and 3.
0 always provides a continuous lubricating oil layer. Lubricating oil placed in the two respective lateral fluid chambers 32, 33 and 34, 35 at the required pressure also helps to provide hydrodynamic bearing. However, as already mentioned, this also provides support as opposed to lateral loads.

A possible embodiment is the use of only one lateral fluid chamber, which provides the hydrodynamic support for the working rolls 2 and 3 on only one side. However, in other applications, the central fluid chambers 29 and 30 could be eliminated and replaced with one or more lateral fluid chambers.

In the above apparatus, the central controller 42 includes central fluid chambers 29 and 30,
The current rolling pressure N can be adjusted so that the pressure in the oil chamber 40 advantageously matches the pressure value required to provide the hydrodynamic bearing. That is, apart from the required rolling pressure N_, the oil pressure in the central fluid chambers 29 and 30 always provides a continuous oil layer. As a result, the fluid sources 31 and 41
In this sense, must be relatively controlled. The details will be apparent to those skilled in the art based on this description.

[0038]   The operation of the illustrated embodiment of the apparatus will be described with reference to FIGS.

In operation, the raw material foil 24 to be rolled is an aluminum foil having a width of 1000 mm and a thickness of 300 micrometers, which is fed from the storage drum 20 through the inlet opening 18 to the feeding area of the working rolls 2 and 3. The aim during the rolling operation is to obtain a finished foil 25 with a thickness of 150 micrometers after passing between the working rolls 2 and 3. The finished foil 25 as a product is produced in this manner and wound on the drum 21.

The diameter of working rolls 2 and 3 was chosen to be 100 mm for the experiment. The value of the rolling pressure (arrow N_) is 150 m, which is the thickness required for the finished foil 25 as a product.
Based on m, experimentally adjusted (eg 50 bar) by properly controlling the fluid sources 31 and 41 respectively. The basic data for this control step is provided by the measurable thickness of the finished foil 25, such as the finished product, so that the skilled person can easily carry out this control step.

In this case, the hydraulic pressure in the side fluid chambers 32 to 35 is regulated by the fluid sources 36 and 37 while looking at the lateral loading of the working rolls 2 and 3. The hydraulic pressures in the central fluid chambers 29 and 30, as well as in the lateral fluid chambers 32 to 35, are rolled during rolling such that there is a continuous lubricating layer on the inset surfaces 9 and 10 of the working rolls 2 and 3, i.e. It was specified that hydrodynamic bearings should be realized throughout the process. Oil as a working fluid also serves to cool the working rolls 2 and 3 and the bearing brackets 11 and 12.

In the illustrated device according to the invention, the rolling adjustment device is provided by pressure units 13 and 14, which in this case are formed as hydraulically actuated cylinders H_. However, they can be replaced by any other mechanical, electromechanical or pneumatic device capable of exerting rolling pressure.

Therefore, before introducing the foil 24 to be processed between the working rolls 2 and 3, the working rolls 2 and 3 are closed, ie adjacent to each other. Thus, in practice, the "rolling gap" is formed when the foil 24 begins to be formed, i.e. introduced. The shape of the forming area is actually created by the deformation of the working rolls 2 and 3, which must be taken into account when calculating the rolling pressure N_.

The working rolls 2 and 3 are made of forged chrome steel. This surface is formed by surface cooling so that the Shore hardness is 95 to 100 °.
The degree of forming (thickness reduction) obtained by introducing the foil 24 once can be adjusted by controlling the rolling pressure N_. Of course, the device according to the invention can also be equipped with several pairs of working rolls and more roll stands along the path of travel of the foil, which allows the process to go through several operating phases. Can be used to reduce the thickness of the work piece to be molded until the desired thickness of the finished product is achieved. The foil 25 can also be reintroduced into the same working roll pair 2 and 3 as a further rolling stage after the first rolling.

The main advantage of the present invention is that it eliminates backup rolls and realizes a novel telescoping system for working rolls, which eliminates the wear and energy losses which are unavoidable with the known solutions, and is therefore considerable. To provide a simpler and more economical solution. Therefore, the basic idea of the invention is that the bearing bracket 11 and the working brackets 2 and 3 that engage the working surfaces 9 and 10 are provided where the conditions for hydrodynamic bearing are provided throughout operation. 12 to support. The pressure units 13 and 14 consist of the bearing bracket 1
The rolling pressure N_ is transmitted to the working rolls 2 and 3 via 1 and 12. The bearing brackets 11 and 12 can be made rigid enough to prevent the working pressures 2 and 3 from being deformed by the rolling pressure N_ such that the quality of the finished product is adversely affected.

More pressure units 13 and 14 have the same purpose as above.
Are arranged along the length of the bearing brackets 11 and 12, which ensures a much more even transmission of the rolling pressure N_ and avoids the harmful deformation of the working rolls 2 and 3. Will increase.

The drive energy requirement of the device according to the invention is relatively low, due to the fact that it completely eliminates the backup roll used in the conventional solution, with losses due to wear.

As a result, the operating cost is also reduced. Another important advantage is that the elimination of backup rolls completely eliminates the technical impediment to producing foil or other rolled products in virtually any width. Wider foils are much more economical to print and further process, increasing consumer demand for the production of wider foils.

It should be mentioned that, although the embodiments presented here are suitable for rolling foils, theoretically, embodiments of the device according to the invention roll products of metal sheets or other rod-shaped profiles. It means that it can be provided in the same way to do. However, with respect to such an embodiment, the end of the working roll must also fit into, for example, the end of the bearing bracket to adjust the rolling clearance.

The material of bearing brackets 11 and 12 can be any material currently used as a bushing material in bearing technology. Needless to say, it is not necessary to make the entire bearing / bracket from such a material. It is sufficient to make only the fitting part with such a bushing material, and the other parts of the bearing bracket can be made with another material of suitable rigidity, for example steel.

Finally, numerous modifications, combinations or variations of the above-described embodiments of the present invention are possible within the scope of the claims, which, in view of the above disclosure, are of ordinary skill in the art. It does not require any additional teaching to the technician.

[Brief description of drawings]

FIG. 1A is a perspective view of an embodiment of the device according to the invention with the mechanical parts partially removed.

FIG. 1B is a perspective view of an embodiment of the device according to the invention with the mechanical parts partially removed.

[Fig. 2]   1B is a side view of the solution according to FIG. 1A.

[Figure 3]   FIG. 3 is a sectional view taken along line III-III in FIG. 2.

[Figure 4]   3 is a front view of the solution according to FIG.

[Figure 5]   FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4.

[Figure 6]   FIG. 6 shows the solution according to FIG. 5 in more detail with accessories.

[Figure 7]   It is a figure which shows FIG. 6 in more detail.

[Procedure for Amendment] Submission for translation of Article 34 Amendment of Patent Cooperation Treaty

[Submission date] April 17, 2002 (2002.17)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Contents of correction]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Contents of correction]

However, practical experience has shown that the use of backup roll press rolling for various rolling procedures is associated with considerable friction and rolling deformation. At the same time, significant roll wear must be considered. Friction losses, of course, add to the driving force requirement, which significantly increases the operating cost of the device. As a result of the deformation and friction of the backup rolls, the working rolls have a relatively short service life and must be replaced frequently, which necessitates machine shutdowns, increased uptime and considerable Costs. The roll support to SU-A-975,126 is disclosed a working roll is located in the insertion portion of the hydrostatic bearing, it is supported by the cushion on the hydraulic cylinders attached to the stand. The hydrostatic bearing pocket communicates with the pressure source via a restrictor . This same source of pressure is connected to the chamber of the cylinder via the working cavity of the shut-off valve and its control cavity is connected to the pocket to set the roll radially. Thus the same fluid source, and a hydrostatic bearing, will be that plays also a role for either radial setting of the working roll, by its control of these two different stages there is a case in which a problem to be Rukoto occurs. U.S. Pat. No. 4,530,227 relates to a system for supporting working or backup rolls. This role bearings of conventional are provided at both ends. Thus, the hydrostatic support member is not provided only the support of the semi-radial direction relative to the roll, they are spaced apart a roll length.

─────────────────────────────────────────────────── ─── Continued front page    (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, MZ, SD, SL, SZ, TZ, UG , ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, C A, CH, CN, CR, CU, CZ, DE, DK, DM , DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, K E, KG, KP, KR, KZ, LC, LK, LR, LS , LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, R U, SD, SE, SG, SI, SK, SL, TJ, TM , TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW [Continued summary] A means for continuously providing a lubricating layer to the Is at least one grooved fluid chamber (29, 30; 3 2 to 35) play the working rolls (2, 3) Part of the bearing bracket (11, 12) to be fitted A means provided, said means being in communication with a fluid source, The working rolls (2, 3) are the bearing brackets. The pressure unit (13, 14), the rolling pressure is transmitted and the pressure unit The knit (13, 14) applies rolling pressure (N) to the bearing Even transmission along the entire length of the bracket (11, 12) As a means of reaching, preferably one or more hydraulic operations It is provided as a dynamic cylinder (H). The main advantages of the invention Eliminates the support roll and replaces the working roll with a new We provide a snap-in system, which is inevitable with conventional equipment. Eliminates wear and energy loss, thereby significantly It is to provide a simpler and more economical solution.

Claims (5)

[Claims] 1. An apparatus for rolling a workpiece such as a metal plate or a rod, particularly a metal foil, comprising at least one roll stand (1) and at least rotatably fitted on the roll stand (1). Two driven working rolls (2,3) which cooperate with one another to roll the workpiece into the required shape and / or dimensions and which are positioned orthogonal to the rolling direction (4). And at least one of the working rolls (2, 3) is movable in the roll stand (1) in a direction perpendicular to the rolling direction (4), and the working pressure ( N) capable of exerting a pressure unit (13, 14)
And at least one of the working rolls (3, 4) is free of a backup roll and is located on the opposite side of the rolling zone as a trough.
Bearing brackets (1) supporting at least part of the outer surface (9, 10) of (3)
1, 12) a rolling device fitted for rotation into a rolling layer between the outer surface (9, 10) of the working roll (2, 3) and the bearing bracket (11, 12). A means for providing said lubricating layer is provided with a source of lubricating fluid, said working rolls (2, 3) via said bearing brackets (11, 12) said pressure unit (13, 14) The pressure unit (13, 14) is preferably connected as a means for uniformly transmitting the rolling pressure (N) along the length of the bearing bracket (11, 12). A rolling mill, provided as one or more hydraulically actuated cylinders (H). 2. A central fluid chamber (29, 30) located in the bearing bracket (11, 12) in the longitudinal midplane (28) of the device and arranged orthogonal to the rolling direction (4). And / or at least one lateral fluid chamber (32, 33, 34 and 35) located laterally of said longitudinal mid-plane (28) is provided, said fluid chamber (s) being individually controllable Fluid sources (31, 36,
Device according to claim 1, characterized in that it is advantageously communicated to 37). 3. The bearing unit (13, 14) is provided with the pressure bracket (13, 14).
11, 12) characterized in that it comprises a series of hydraulically actuated cylinders (H) arranged along the length and preferably connected to a common source of pressure fluid capable of controlling the pressure. The device according to claim 2. 4. The central and / or lateral fluid (s) chambers (29, 30, 3) in communication with a fluid source (31, 36, 37) capable of controlling pressure.
2 to 35) are formed as hydrodynamic bearings for the working surfaces (9, 10) of working rolls (2, 3).
The device according to. 5. The means for providing the lubricating layer is at least one inlet groove or is provided at least in a part of the bearing bracket (11, 12) in which the working roll (2, 3) is fitted. One groove-shaped fluid chamber (2
9. 30, 32 to 35), Device according to any one of claims 1 to 4.